Vane compressor

Disclosed is a vane compressor that has a plurality of vanes, performing compression such that the normals of arcs formed by the tips of the vanes are always in near perfect alignment with normals from the inside surface of a cylinder. In order to produce said alignment, each vane is always held in the normal direction of the inside surface of the cylinder or in a direction at a constant angle thereto, and the vanes are supported inside a rotor section so as to be able to rotate and move with respect to said rotor section. A recess or ring-shaped groove, concentric with the inside surface of the cylinder, is formed in a cylinder head and a cylinder-side edge surface of a frame. A pair of vane aligners, each of which has a tabular protrusion or a groove on or in a partial-ring-shaped edge surface, are inserted into the aforementioned recess or groove, and said tabular protrusions or grooves are fitted in or around grooves or protrusions provided in or on the vanes.

Vane compressor having a vane supporter that suppresses leakage of refrigerant

To allow a bush to stably rotate about a bush center, an end of a vane portion that is close to an inner circumferential surface center is always positioned on the inner side with respect to the bush center. Thereby, in a vane compressor a vane is stably supported, wear at a tip of the vane is suppressed, loss due to sliding on bearings is reduced by supporting a rotating shaft portion with a small diameter, and accuracy in outside diameter and center of rotation of a rotor portion is increased.

Cooling cycle apparatus

The invention provides a cooling cycle apparatus using refrigerator oil. When a refrigerant uses hydrocarbons, in a high pressure shell type compressor, the solubility of the refrigerant relative to the refrigerator oil is not large enough to be above necessary amount, so as to prevent viscosity of the refrigerator oil from being greatly reduced. Using the high pressure shell type compressor, hydrocarbon is used as the refrigerant and polyalkylene glycol is used as the refrigerator oil. The ratio of epoxy propene to oxene as the copolymerization components of the polyalkylene glycol is set in the prescribed range, thus, in the cooling cycle of the refrigerator oil and the refrigerant, in the whole temperature range from the refrigeration temperature to the evaporation temperature, the refrigerator oil and the refrigerant are separated into two layers and the rate of the oxene is minimum.

Sealed compressor and vapor compression refrigeration cycle apparatus including the sealed compressor

A sealed compressor includes a centrifugal impeller above a rotor to synchronously rotate. A refrigerant rises through a rotor air hole, flows in an upper space, and flows out from a discharge pipe. The centrifugal impeller includes an oil separation plate on the rotor, and plural vanes standing on the oil separation plate, and forms inter-vane flow passages between adjacent vanes, and a vane inner flow passage that guides refrigerant from the rotor air hole to inner entrances of the inter-vane flow passages. Outer exits of the inter-vane flow passages are disposed along an entire circumference, and refrigerant increased in pressure while passing through the inter-vane flow passages flows out from the outer exits to the upper space. The oil separation plate closes a short-circuit passage through which the refrigerant directly flows from the vane inner flow passages to the discharge pipe without passing through the inter-vane flow passages.

Sealed rotary refrigeration compressor

The invention provides a sealed rotary refrigeration compressor, which is capable of preventing reduction of service life intensity, increase of running input and overheating of the compressor. The front end part of a liquid refrigerant supply pipe (54) is formed in a shape with a thin top end, porous supply holes (54c) are formed on the end of the front end part (54a), and a suction silencer (50) is inserted into the front end part (54a).

Vane compressor that suppresses the wear at the tip of the vane

A gap between a vane tip and a cylinder inner circumferential surface is denoted by δ. If rv is set as in an Expression (1), a first vane rotates with the vane tip thereof being out of contact with the cylinder inner circumferential surface. In the vane compressor, wear at the tip of a vane is suppressed, loss due to sliding on bearings is reduced by supporting a rotating shaft portion with a small diameter, and accuracy in an outside diameter and center of rotation of a rotor portion is increased.

Vane compressor

Disclosed is a vane compressor that has a plurality of vanes. In order to reduce bearing sliding losses from a rotary shaft, and to reduce gas leakage losses by reducing the width of a gap formed between a rotor section and the inside surface of a cylinder, the rotor section and the rotary shaft are integrated together as a single unit. Said vane compressor is characterized in that, letting R be the distance between the axis of rotation of a bush and the axis of rotation of the rotor section, letting e be the distance between the central axis of the inside surface of the cylinder and the axis of rotation of the rotor section, and letting N (a natural number greater than or equal to 2) be the number of vanes, the arc angle (a) of the partial-ring shape of a vane aligner satisfies equation (1).

Multi-cylinder rotary compressor and vapor compression refrigeration cycle system including the multi-cylinder rotary compressor

A multi-cylinder rotary compressor includes plural compression mechanism parts. A drawing force is applied to a vane of at least one of the compression mechanism parts radially outward with respect to a drive shaft, making a pressing force pressing the vane toward a piston smaller than in other compression mechanism parts. In a normal state, a pressing force due to a gas pressure difference between a suction pressure and a discharge pressure is larger than the drawing force, and a vane front end is pressed against a rotary piston peripheral wall. When the drawing force becomes greater than the pressing force, the vane front end is moved to separate from the rotary piston peripheral wall with a space through which oil is introduced from a sealed container, and a retention mechanism retains the vane separated from the piston, and the compression mechanism part switches to an uncompressed state.

Refrigerant compressor and heat pump device

It is aimed to enhance compressor efficiency by both reducing an amplitude of pressure pulsations and reducing pressure losses in a discharge muffler space into which is discharged a refrigerant compressed at a compression unit. A low-stage discharge muffler space (31) is formed in the shape of a ring around a drive shaft (6). In the low-stage discharge muffler space (31), a discharge port rear guide is provided in the proximity of a discharge port (16) through which is discharged the refrigerant compressed by a low-stage compression unit (10). The discharge port rear guide is provided at a flow path in one direction out of two flow paths from the discharge port (16) to a communication port (34) in different directions around the drive shaft (6), and prevents the refrigerant from flowing in that direction, thereby causing the refrigerant to circulate in a forward direction in the ring-shaped discharge muffler space.

Vane rotary compressor

In a vane rotary compressor, a discharge valve on a discharge flow channel communicates an operating chamber in a compression element with a discharge hole. The discharge valve is pushed from an opening portion of a discharge valve groove to an outer circumferential surface of a roller by a high-pressure refrigerant when pressure in an operating chamber is lower than the pressure of the high-pressure refrigerant. The discharge valve is pushed back into the discharge valve groove by the refrigerant pressure in the operating chamber when the pressure in the operating chamber is higher than the pressure of the high-pressure refrigerant. The discharge flow channel is closed by the outer circumferential surface of the discharge valve pushed out from the opening portion of the discharge valve groove and the outer circumferential surface of the roller, and opens when the discharge valve is pushed back into the discharge valve groove.

Refrigeration cycle apparatus

From recent study of combustion of an HFC refrigerant that has a low GWP but is flammable, it has been found that the combustion scale tends to increase as the absolute humidity increases. In a refrigeration cycle apparatus using such a refrigerant, it is necessary to increase safety against unexpected refrigerant leakage in consideration of this tendency. This refrigeration cycle apparatus includes a compressor having a compression mechanism section in an enclosed container and configured to compress and discharge a refrigerant so as to circulate the refrigerant in a refrigerant circuit, and an outdoor unit installed outdoors and having a housing divided by a partition plate into a fan chamber and a machine chamber including the compressor. The refrigerant is a flammable HFC refrigerant. The refrigeration cycle apparatus further includes a desiccant attached in thermal contact with a surface of the enclosed container of the compressor whose temperature is increased by a gas refrigerant ...

VANE COMPRESSOR

A vane compressor according to the present invention, including a cylinder which is approximately cylindrical and whose both ends located in an axial direction are open, a cylinder head and a frame which close both the ends of the cylinder, a rotor shaft which includes a rotor part being cylindrical and rotating in the cylinder and a shaft part transmitting torque to the rotor part, and a vane which is installed in the rotor part and whose tip portion has the R-shape facing outward, performs the compression operation in the state where the normal to the R-shape of the tip portion of the vane and the normal to the inner surface of the cylinder are always approximately coincident with each other. 1. A vane compressor including a cylinder which is approximately cylindrical and whose both ends located in an axial direction are open , a cylinder head and a frame which close the both ends of the cylinder , a rotor shaft which includes a rotor part being cylindrical and rotating in the cylinder and a shaft part transmitting torque to the rotor part , and a vane which is installed in the rotor part and whose tip portion has an R-shape facing outward , the vane compressor comprising:performing a compression operation in a state where a normal to the R-shape of the tip portion of the vane and a normal to an inner surface of the cylinder are always approximately coincident with each other.2. The vane compressor according to claim 1 , wherein a radius of the R-shape of the tip portion of the vane and a radius of the inner surface of the cylinder are approximately equal to each other.3. The vane compressor according to claim 1 , wherein the vane is supported to be in one of states of being always in direction of the normal of the inner surface of the cylinder and always having a fixed inclination with respect to the direction of the normal of the inner surface of the cylinder claim 1 , and further supported claim 1 , in the rotor part claim 1 , to be pivotally rotatable with ...

Refrigerant compressor

A refrigerant compressor includes: an electric motor including a stator and rotor inside a sealed vessel; a compressing mechanism driven by a crank shaft in the rotor; a lower portion oil pool storing in the sealed vessel lubricating oil that lubricates the compressing mechanism; an upper counterweight on an upper end of the rotor. Refrigerant gas compressed by the compressing mechanism is discharged inside the sealed vessel, passes through a gas channel formed on the electric motor, moves from a lower space to an upper space with respect to the electric motor, and is discharged outside the sealed vessel. An oil return flow channel is formed on the upper end of the rotor toward a lower end from a vicinity of a leading end portion of the upper counterweight in a direction of rotation, and oil expressed in a vicinity of the rotor is directed to the oil return flow channel.

VANE COMPRESSOR

There is provided a vane compressor with a plurality of vanes having a structure in which a rotor portion and a rotary shaft are unitarily formed so as to reduce bearing sliding loss of the rotary shaft and reduce gas leakage loss by narrowing a space formed between the rotor portion and the inner peripheral surface of a cylinder. In the vane compressor with the plurality of vanes according to the present invention, an angle α of a circular arc constituting the partial ring shape of each vane aligner satisfies a relationship of 13-. (canceled)5. The vane compressor according to claim 4 , whereina concave portion whose inner peripheral surface is concentric with the inner peripheral surface of the cylinder is formed in the end surface of each of the frame and the cylinder head on the side of the cylinder, andthe vane aligner is provided to slide along the inner peripheral surface of the concave portion of each of the frame and the cylinder head.6. The vane compressor according to claim 5 , whereinthe concave portion of each of the frame and the cylinder head is a ring-shaped groove.7. The vane compressor according to claim 4 , whereina bush holding portion penetrating axially is formed in the rotor portion,the vane compressor further comprising:a pair of approximately semicolumnar bushes inserted in the bush holding portion to support the vanes by sandwiching the vanes, whereinthe vane aligner supports the vanes such that the vanes are rotatable about a central axis of the bush holding portion.8. The vane compressor according to claim 4 , whereinthe vane aligner supports axial ends of each of the vanes such that the tip portion of each of the vanes moves along the inner peripheral surface of the cylinder along with rotation of the rotor portion while maintaining a space between the tip portion of each of the vanes and the inner peripheral surface of the cylinder.9. The vane compressor according to claim 4 , whereinthe vane aligner is unitarily attached to one of the ...

Vane rotary compressor

In a vane rotary compressor, a discharge valve on a discharge flow channel communicates an operating chamber in a compression element with a discharge hole. The discharge valve is pushed from an opening portion of a discharge valve groove to an outer circumferential surface of a roller by a high-pressure refrigerant when pressure in an operating chamber is lower than the pressure of the high-pressure refrigerant. The discharge valve is pushed back into the discharge valve groove by the refrigerant pressure in the operating chamber when the pressure in the operating chamber is higher than the pressure of the high-pressure refrigerant. The discharge flow channel is closed by the outer circumferential surface of the discharge valve pushed out from the opening portion of the discharge valve groove and the outer circumferential surface of the roller, and opens when the discharge valve is pushed back into the discharge valve groove.

VANE COMPRESSOR

A vane compressor including plural vanes that perform a compression operation such that the normal to a circular arc formed by each vane tip portion and the normal to the inner peripheral surface of a cylinder are constantly approximately coincident with each other. Each of the plural vanes is held constantly in the normal direction of the inner peripheral surface of the cylinder or is held constantly along a direction having a fixed inclination with respect to the normal direction of the inner peripheral surface of the cylinder so that the compression operation is performed in the state the normal to the circular arc formed by the tip portion of each of the plural vanes and the normal to the inner peripheral surface of the cylinder are constantly approximately coincident with each other. The plural vanes are rotatably and movably supported with respect to a rotor portion. 15-. (canceled)6. A vane compressor comprising:an approximately cylindrical cylinder;a frame that closes one axial end of the cylinder;a cylinder head that closes the other axial end of the cylinder;a rotor shaft including a rotary shaft portion supported by the frame and the cylinder head and being eccentric to a center of an inner peripheral surface of the cylinder, and a rotor portion that rotates about the rotary shaft portion in the cylinder;a plurality of vanes installed in the rotor portion, each of the plurality of vanes including a tip portion that moves in the cylinder along with rotation of the rotor portion; anda vane aligner attached to an end surface of each of the frame and the cylinder head on a side of the cylinder to rotate about an axis concentric with the inner peripheral surface of the cylinder, the vane aligner supporting the plurality of vanes.7. The vane compressor according to claim 6 , whereina concave portion whose inner peripheral surface is concentric with the inner peripheral surface of the cylinder is formed in the end surface of each of the frame and the cylinder ...

OUTDOOR UNIT

Provided is an outdoor unit for use in a refrigeration cycle apparatus circulating refrigerant mixture inclusive of 1,1,2-trifluoroethylene, the outdoor unit including: a casing; a pipe configured to allow the refrigerant mixture to flow through the pipe, the pipe being accommodated inside the casing and including a bend portion, the bend portion including a breakage-guide structure having a pressure resistance lower than a pressure resistance of rest of the pipe; and a plate interposed between the breakage-guide structure and outside of the casing. 1. An outdoor unit for use in a refrigeration cycle apparatus circulating refrigerant mixture inclusive of 1 ,1 ,2-trifluoroethylene , the outdoor unit comprising:a casing;a pipe configured to allow the refrigerant mixture to flow through the pipe; fins,', 'a plurality of heat transfer tubes penetrating through the fins and forming a part of the pipe, and', 'a bend portion connecting two of the heat transfer tubes, the bend portion being accommodated inside the casing, and comprising a breakage-guide structure having a pressure resistance lower than a pressure resistance of rest of the pipe; and, 'an outdoor heat exchanger, the outdoor heat exchanger including'}a plate interposed between the breakage-guide structure and outside of the casing.2. The outdoor unit of claim 1 , an air-sending chamber having an air inlet and an air outlet, and', 'a machine chamber partitioned from the air-sending chamber, and, 'wherein the casing includes'}wherein the breakage-guide structure is accommodated inside the machine chamber.3. The outdoor unit of claim 1 ,wherein a ratio of the 1,1,2-trifluoroethylene to the refrigerant mixture is equal to or less than 35 wt %, andwherein the breakage-guide structure is to be broken at a pressure of from 10 MPa to 15 MPa.4. (canceled)5. The outdoor unit of claim 1 , wherein the bend portion is a U-bent claim 1 , which is formed separately from the plurality of heat transfer tubes claim 1 , and is ...

MULTI-CYLINDER ROTARY COMPRESSOR AND VAPOR COMPRESSION REFRIGERATION CYCLE SYSTEM INCLUDING THE MULTI-CYLINDER ROTARY COMPRESSOR

A multi-cylinder rotary compressor includes plural compression mechanism parts. A drawing force is applied to a vane of at least one of the compression mechanism parts radially outward with respect to a drive shaft, making a pressing force pressing the vane toward a piston smaller than in other compression mechanism parts. In a normal state, a pressing force due to a gas pressure difference between a suction pressure and a discharge pressure is larger than the drawing force, and a vane front end is pressed against a rotary piston peripheral wall. When the drawing force becomes greater than the pressing force, the vane front end is moved to separate from the rotary piston peripheral wall with a space through which oil is introduced from a sealed container, and a retention mechanism retains the vane separated from the piston, and the compression mechanism part switches to an uncompressed state. 1: A multi-cylinder rotary compressor comprising:a drive shaft including a plurality of eccentric-pin shaft portions;an electric motor configured to drive and rotate the drive shaft;a plurality of compression mechanisms; anda sealed container housing the electric motor and the plurality of compression mechanisms and storing lubricating oil at a bottom thereof, a cylinder having a cylinder chamber into which low-pressure refrigerant is sucked from a suction pressure space and from which compressed high-pressure refrigerant is discharged to a discharge pressure space,', 'a ring-shaped piston slidably attached to each of the plurality of eccentric-pin shaft portions of the drive shaft and configured to eccentrically rotate in the cylinder chamber,', 'a vane configured to separate the cylinder chamber into two spaces when a front end of the vane is pushed against an outer peripheral surface of the piston,', 'a vane groove housing the vane in such a manner that the vane reciprocates therein and being open to the cylinder chamber, and', 'a vane rear chamber housing a rear end of the ...

SEALED COMPRESSOR AND VAPOR COMPRESSION REFRIGERATION CYCLE APPARATUS INCLUDING THE SEALED COMPRESSOR

A sealed compressor includes a centrifugal impeller above a rotor to synchronously rotate. A refrigerant rises through a rotor air hole, flows in an upper space, and flows out from a discharge pipe. The centrifugal impeller includes an oil separation plate on the rotor, and plural vanes standing on the oil separation plate, and forms inter-vane flow passages between adjacent vanes, and a vane inner flow passage that guides refrigerant from the rotor air hole to inner entrances of the inter-vane flow passages. Outer exits of the inter-vane flow passages are disposed along an entire circumference, and refrigerant increased in pressure while passing through the inter-vane flow passages flows out from the outer exits to the upper space. The oil separation plate closes a short-circuit passage through which the refrigerant directly flows from the vane inner flow passages to the discharge pipe without passing through the inter-vane flow passages. 1. A sealed compressor comprising:a sealed container that stores lubricant oil at a bottom thereof;a motor that is provided within the sealed container and has a stator and a rotor;a drive shaft attached to the rotor;a compression mechanism that is provided within the sealed container and configured to compress a refrigerant upon rotation of the drive shaft;a centrifugal impeller that is provided above the rotor and configured to rotate in synchronization with the rotor;a rotor air hole that penetrates the rotor in an up-down direction; anda discharge pipe configured to cause the refrigerant, upon flowing into a lower space of the motor, rising through the rotor air hole, and flowing into an upper space of the motor, to flow out from the upper space to an external circuit of the sealed container,wherein the centrifugal impeller includesan oil separation plate and a lower surface partition plate that are provided on an upper side of an upper end of the rotor so as to be spaced apart from each other,a plurality of vanes that stand ...

REFRIGERATION CYCLE APPARATUS

A refrigeration cycle apparatus includes a refrigerant circuit including a compressor, a condenser (outdoor heat exchanger), an expansion valve, and an evaporator (indoor heat exchanger), a fan configured to blow air to the condenser, a fan configured to blow air to the evaporator, and a controller configured to control at least one of a frequency of the compressor, an opening degree of the expansion valve, a rotation speed of the fan, and a rotation speed of the fan, such that the refrigerant sucked into the compressor has a quality of 1.0 or greater. The refrigerant circuit is configured for use with a refrigerant mixture inclusive of 30 wt % to 50% wt ethylene-based hydrofluorocarbon refrigerant. 1. (canceled)2. A refrigeration cycle apparatus comprising:a refrigerant circuit including a compressor, a condenser, a pressure reducing device, and an evaporator;a first fan configured to blow air to the condenser;a second fan configured to blow air to the evaporator;an outdoor air temperature detecting unit configured to detect an outdoor air temperature; anda controller configured to control at least one of a frequency of the compressor, an opening degree of the pressure reducing device, a rotation speed of the first fan, and a rotation speed of the second fan, such that the refrigerant sucked into the compressor has a suction superheat degree, which is a degree of superheat of the refrigerant sucked into the compressor, the suction superheat degree being lower than or equal to a difference between the outdoor air temperature detected by the outdoor air temperature detecting unit and a saturated gas temperature of the refrigerant,wherein the refrigerant circuit is configured for use with a refrigerant mixture inclusive of 30 wt % to 70 wt % ethylene-based hydrofluorocarbon refrigerant.3. The refrigeration cycle apparatus of claim 2 , wherein the controller is configured to perform control such that a discharge temperature of the compressor lies within a predetermined ...

CORRUGATED FIN HEAT EXCHANGER, REFRIGERATION CYCLE APPARATUS, APPARATUS FOR PRODUCING CORRUGATED FIN, AND METHOD FOR PRODUCING CORRUGATED FIN HEAT EXCHANGER

A corrugated fin heat exchanger includes: a first flat tube; a second flat tube aligned in parallel with the first flat tube; and a corrugated fin disposed between the first flat tube and the second flat tube, and the corrugated fin includes a first slant portion bridging between the first flat tube and the second flat tube and inclined relative to a perpendicular line toward the first flat tube at a first angle of inclination, a second slant portion bridging between the first flat tube and the second flat tube and inclined relative to the perpendicular line at a second angle of inclination, and a third slant portion bridging between the first flat tube and the second flat tube, the third slant portion positioned between the first slant portion and the second slant portion, and inclined relative to the perpendicular line at an angle of inclination larger than both of the first angle of inclination and the second angle of inclination. 1. A corrugated fin heat exchanger for causing an internal fluid to flow in a vertical direction , the corrugated fin heat exchanger comprising:a first flat tube;a second flat tube aligned in parallel with the first flat tube; anda corrugated fin disposed between the first flat tube and the second flat tube; a first slant portion bridging between the first flat tube and the second flat tube and inclined relative to a perpendicular line toward the first flat tube at a first angle of inclination,', 'a second slant portion bridging between the first flat tube and the second flat tube and inclined relative to the perpendicular line at a second angle of inclination, and', 'a third slant portion bridging between the first flat tube and the second flat tube, the third slant portion positioned between the first slant portion and the second slant portion, and inclined relative to the perpendicular line at an angle of inclination larger than both of the first angle of inclination and the second angle of inclination., 'the corrugated fin including ...

COMPRESSOR AND REFRIGERATION CYCLE APPARATUS

A compressor for use in a refrigerant circuit using a refrigerating machine oil being free of phosphoric ester and a refrigerant mixture inclusive of 1,1,2-trifluoroetylene includes a rolling piston and a vane in contact with the rolling piston in a slidable manner. The rolling piston and the vane are formed of a base metal, the base metal being steel, and the base metal is exposed at a contact portion between the rolling piston and the vane 1. A compressor for use in a refrigerant circuit using a refrigerating machine oil being free of phosphoric ester and a refrigerant mixture inclusive of 1 ,1 ,2-trifluoroetylene , the compressor comprising:a first member formed of a base metal, the base metal being steel, the first member including a first contact portion; anda second member including a second contact portion being in contact with the first contact portion of the first member in a slidable manner, whereinthe base metal of the first member is exposed at the first contact portion.2. The compressor of claim 1 , further comprising:a cylinder including a compression chamber;a rolling piston rotating in the compression chamber; anda vane separating the compression chamber into two spaces, the vane having an edge being in contact with an outer peripheral surface of the rolling piston,wherein at least one of the rolling piston and the vane is the first member.3. A refrigeration cycle apparatus comprising:{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'a refrigerant circuit including the compressor of ;'}a refrigerant mixture inclusive of 1,1,2-trifluoroethylene and used in the refrigerant circuit; anda refrigerating machine oil being free of phosphoric ester and used in the refrigerant circuit.4. The refrigeration cycle apparatus of claim 3 , wherein no anti-wear agent is added to the refrigerating machine oil.5. The refrigeration cycle apparatus of claim 3 , wherein the refrigerating machine oil has a saturated water content of 1000 wt ppm or more.6. The ...

HEAT EXCHANGER AND REFRIGERATION CYCLE DEVICE

In a heat exchanger, a first heat exchange unit is formed by curving a third heat exchange unit having a planar shape through L-shape bending, and a second heat exchange unit is formed by curving a fourth heat exchange unit having a planar shape through the L-shape bending, independently of the third heat exchange unit. The first heat exchange unit and the second heat exchange unit are arranged so as to be opposed to each other along a corner portion between adjacent two side surfaces of a casing. 15-. (canceled)6. A refrigeration cycle apparatus , comprising:a circuit through which a refrigerant circulates including a heat exchanger having a plurality of flat pipes or a plurality of circular pipes having a diameter of 4 mm or smaller, anda fan configured to generate flow of air to the heat exchanger,wherein the heat exchanger includes a first heat exchanger and a second heat exchanger arranged closer to a leeward side than the first heat exchanger with respect to a direction of the flow of the air,wherein the first heat exchanger and the second heat exchanger are connected to a first collection pipe respectively through corresponding first distribution pipes,wherein the first heat exchanger and the second heat exchanger are connected to a second collection pipe respectively through corresponding second distribution pipes,wherein a length over which the first heat exchanger extends is shorter than a length over which the second heat exchanger extends,wherein an amount of refrigerant in the first heat exchanger is larger than an amount of refrigerant in the second heat exchanger, andwherein a heat transfer area of the second heat exchanger is larger than a heat transfer area of the first heat exchanger.7. A refrigeration cycle apparatus , comprising:a circuit through which a refrigerant circulates including a heat exchanger, anda fan configured to generate flow of air to the heat exchanger,wherein the heat exchanger includes a first heat exchanger having a first heat ...

SCROLL COMPRESSOR

A scroll compressor has an electric motor portion, a compression mechanism portion connected to the electric motor portion, and an oil sump for lubricating oil in a sealed container and compresses a refrigerant in the compression mechanism portion. A used refrigerant is a halogenated hydrocarbon or a hydrocarbon having a carbon double bond in the composition or is a mixture containing one of the same. A sliding surface of at least one of two components constituting a sliding portion having a relation of sliding to each other in a sealed container is structured in such a way that an iron metal or an aluminum metal is not directly exposed. 1. A scroll compressor , in which there are provided an electric motor portion , a compression mechanism portion connected to the electric motor portion , and an oil sump for lubricating oil in a sealed container , and in which the compression mechanism portion compresses a refrigerant , whereinthe refrigerant includes at least “HFO-1234yf”, anda sliding surface of at least one of two components constituting a sliding portion having a relation of sliding to each other in the sealed container is structured in such a way as to be subjected to coating treatment or coating film formation treatment with material that does not include iron and aluminum, and that suppress decomposition or polymerization of the refrigerant, so that an iron metal or an aluminum metal is not directly exposed to the refrigerant.2. The scroll compressor of claim 1 , wherein the compression mechanism portion includes:a fixed scroll and a swing scroll that form a compression chamber by combining spiral portions in which the spiral directions are reverse to each other,a swing bearing provided at the side of an anti-compression chamber of the swing scroll,a frame that supports a thrust bearing surface of the swing scroll through a thrust plate,an Oldham ring including upper and lower convex portions serving as keys which are accommodated in the swing scroll and the ...

HEAT PUMP APPARATUS

A heat pump apparatus, including: a two-cylinder compressor including: an electric motor; two compression units to be driven by the electric motor, the two-cylinder compressor being structured to switch between two operation modes including single operation in which one of the compression units is brought into a non-compression state, and parallel operation in which both the compression units are brought into a compression state; an inverter drive control device supplying drive power to the electric motor of the two-cylinder compressor; an operation mode detecting-determining unit determining a current operation mode based on an electric signal acquired from the inverter drive control device; and a capacity control device determining a rotating frequency of the electric motor so that a temperature of a target object is brought close to a set value, to thereby control the inverter drive control device based on a result of determination of the operation mode detecting-determining unit. 1. A heat pump apparatus , comprising: an electric motor, and', 'two compression units to be driven by the electric motor,', 'the two-cylinder compressor being structured to switch between two operation modes including a single operation in which one of the two compression units is brought into a non-compression state, and a parallel operation in which both the two compression units are brought into a compression state in accordance with operation conditions,, 'a two-cylinder compressor including'}a heat-rejecting-side heat exchanger;a pressure reducing mechanism; 'the two-cylinder compressor, the heat-rejecting-side heat exchanger, the pressure reducing mechanism, and the heat-removing-side heat exchanger being connected to one another;', 'a heat-removing-side heat exchanger,'}an inverter drive control device configured to supply drive power to the electric motor of the two-cylinder compressor;an operation mode detecting-determining unit configured to determine either one of the two ...

HEAT EXCHANGER AND REFRIGERATION CYCLE APPARATUS HAVING HEAT EXCHANGER

A heat exchanger includes plate-shaped fins and a plurality of heat transfer pipes attached to the fins so as to intersect the fins. The heat transfer pipes are disposed at intervals in a long-edge direction of the fins. The fins have a wave shape at at least a portion thereof and are capable of expanding and contracting in the long-edge direction. 1. A heat exchanger comprising:plate-shaped fins;a plurality of heat transfer pipes attached to the tube insertion parts formed in the fins so as to intersect the fins, andheaders in which ends of the heat transfer pipes are inserted into heat transfer-pipe-attaching portion, whereinthe heat transfer pipes are disposed at intervals in a long-edge direction of the fins, andthe fins have a wave shape at at least a portion thereof and are capable of expanding and contracting in the long-edge direction such that a pitch of the heat transfer pipes of the fins is adjusted to a pitch of the pipe-attaching parts in the headers.2. The heat exchanger of claim 1 , wherein crests and troughs constituting the wave shape extend in a short-edge direction.3. The heat exchanger of claim 1 , wherein a pitch of the wave shape is twice a pitch of the tube insertion parts formed in the fins.4. The heat exchanger of claim 1 , wherein a pitch of the wave shape is equal to a pitch of the tube insertion parts formed in the fins.5. The heat exchanger of claim 3 , wherein the tube insertion parts are formed at peak portions of the wave shape.6. The heat exchanger of claim 1 , wherein a pitch of the wave shape is smaller than a pitch of the tube insertion parts formed in the fins.7. The heat exchanger of claim 6 , wherein the wave shape is formed between a positioning hole formed in the fins and a tube insertion part adjacent to the positioning hole.8. The heat exchanger of claim 1 , wherein the heat transfer pipes are joined to the fins by means of interference fitting.9. A refrigeration cycle apparatus comprising a refrigerant circuit in which a ...

VANE-TYPE COMPRESSOR

A vane-type compressor includes a rotor shaft that includes rotating shaft portions and a rotor portion, which are integrated with one another. A lower end of the rotating shaft is disposed in an oil reservoir. The vane-type compressor also includes vane aligners disposed at both end portions of vanes, and recess portions, which are respectively formed in a frame and a cylinder head so as to be concentric with an inner circumferential surface of a cylinder. Outer circumferential surfaces of the vane aligners are slidably supported by the recess portions. In the rotor shaft, oil supply channels, which allow communication between the oil reservoir and the recess portions of the frame and the cylinder head, and an oil pump, which supplies refrigerating machine oil in the oil reservoir to the oil supply channels, are provided. 1. A vane-type compressor comprising:a sealed container;an oil reservoir disposed at a bottom portion of the sealed container, and configured to accumulate therein refrigerating machine oil; and a cylinder having a cylindrical inner circumferential surface,', a cylindrical rotor portion that rotates in the cylinder about a rotational axis offset from a central axis of the inner circumferential surface by a predetermined distance, and', 'a shaft portion, wherein a rotational force is transmitted from the electrical drive element to the rotor portion through the shaft portion, and a lower end of the shaft portion is disposed in the oil reservoir,, 'a rotor shaft that includes'}, 'a frame that closes one of open ends of the inner circumferential surface of the cylinder, wherein the shaft portion is rotatably supported by a bearing portion of the frame,', 'a cylinder head that closes the other open end of the inner circumferential surface of the cylinder, wherein the shaft portion is rotatably supported by a bearing portion of the cylinder head, and', 'at least one vane disposed in the rotor portion, the vane having a tip end portion on an outer ...

VANE COMPRESSOR

To allow a bush to stably rotate about a bush center, an end of a vane portion that is close to an inner circumferential surface center is always positioned on the inner side with respect to the bush center. Thereby, in a vane compressor a vane is stably supported, wear at a tip of the vane is suppressed, loss due to sliding on bearings is reduced by supporting a rotating shaft portion with a small diameter, and accuracy in outside diameter and center of rotation of a rotor portion is increased. 1. A vane compressor comprising: a cylinder having a cylindrical inner circumferential surface;', 'a rotor shaft including a cylindrical rotor portion and a rotating shaft portion in the cylinder, the rotor portion being configured to rotate about an axis of rotation offset from a central axis of the inner circumferential surface by a predetermined distance, the rotating shaft portion being configured to transmit a rotational force from an outside to the rotor portion;', 'a frame that closes one of openings defined by the inner circumferential surface of the cylinder and supports the rotating shaft portion by a main bearing portion thereof;', 'a cylinder head that closes the other of the openings defined by the inner circumferential surface of the cylinder and supports the rotating shaft portion by a main bearing portion thereof; and', 'at least one vane provided to the rotor portion and whose tip projects from the rotor portion and is shaped as an arc that is convex outward,, 'a compressing element that compresses a refrigerant, the compressing element including'} 'a vane supporting unit that supports the vane such that the refrigerant is compressed in a space defined by the vane, an outer circumference of the rotor portion, and the inner circumferential surface of the cylinder and such that a line normal to the arc at the tip of the vane and a line normal to the inner circumferential surface of the cylinder always substantially coincide with each other, the vane supporting ...

REFRIGERATION CYCLE DEVICE

A refrigeration cycle device includes: a casing that configures the outer contour of an outdoor machine, has a machine chamber and a blowing chamber formed therewithin, and has formed an introduction hole for introducing outside air into the machine chamber; a partition plate that partitions the interior of the casing so as to demarcate the machine chamber and the blowing chamber; a refrigeration cycle circuit, of which at least a portion is disposed in the machine chamber, and through which a combustible refrigerant circulates; and a blower disposed in the blowing chamber. A blow-through hole connecting from the machine chamber to the blowing chamber is formed in a bottom part of the partition plate. The outside air introduced into the machine chamber from the introduction hole flows through the blow-through hole and into the blowing chamber, and is sent outside the casing from a blow-out opening formed in the blowing chamber. 1. A refrigeration cycle device comprising:a casing that configures an outer contour of an outdoor machine, has a first chamber and a second chamber formed therewithin, and has formed an introduction hole for introducing outside air into the first chamber;a partition that partitions the interior of the casing so as to demarcate the first chamber and the second chamber, and has formed in a bottom part thereof a blow-through hole connecting from the first chamber to the second chamber;a refrigeration cycle circuit, of which at least a portion is disposed in the first chamber, and through which a combustible refrigerant circulates; anda blower disposed in the second chamber that sends out the outside air introduced from the introduction hole through the blow-through hole and outside the casing from a blow-out opening formed in the second chamber.2. The refrigeration cycle device according to claim 1 , whereinthe introduction hole is formed at a position higher than a position where the blow-through hole is formed.3. The refrigeration cycle ...

VANE COMPRESSOR

A vane compressor includes a cylinder, a rotor portion, vanes, and a first discharge port allowing a refrigerant in a compression chamber to be discharged therethrough. The vanes are disposed inside the rotor portion and held rotatably about the center of a cylinder inner circumferential surface, partition a space between the cylinder inner circumferential surface and the rotor portion, and form the compression chamber. A second discharge port is disposed at a location having a phase angle smaller than that at the first discharge port, being open to the cylinder inner circumferential surface, and communicating with the compression chamber. The second discharge port includes an opening portion to the compression chamber, the opening portion having a width in the circumferential direction, the width being equal to or smaller than the width of the tip of each of the vanes. 1. A vane compressor comprising:a cylinder including a cylindrical inner circumferential surface that defines a hole having opposite openings;a cylinder head that covers one of the openings;a frame that covers another one of the openings;a cylindrical rotor portion configured to rotate about a rotation axis displaced from a central axis of the inner circumferential surface inside the cylinder;a rotating shaft portion configured to transmit a rotational force to the rotor portion; anda vane disposed inside the rotor portion, held rotatably about a center of the cylinder inner circumferential surface of the cylinder, and partitioning a compression space formed between the cylinder and the rotor portion into at least a suction space and a discharge space;wherein each of the frame and the cylinder head includes a recess or a ring-shaped groove in an end face near the cylinder, the recess or the ring-shaped groove having an outer circumferential surface concentric with the inner circumferential surface of the cylinder,a vane aligner having a partial ring-shape and configured to support the vane is ...

VANE COMPRESSOR

A gap between a vane tip and a cylinder inner circumferential surface is denoted by δ. If rv is set as in an Expression (1), a first vane rotates with the vane tip thereof being out of contact with the cylinder inner circumferential surface. In the vane compressor, wear at the tip of a vane is suppressed, loss due to sliding on bearings is reduced by supporting a rotating shaft portion with a small diameter, and accuracy in an outside diameter and center of rotation of a rotor portion is increased. 1. A vane compressor comprising:a compressing element that compresses a refrigerant, the compressing element includinga cylinder having a cylindrical inner circumferential surface,a rotor shaft provided in the cylinder and including a cylindrical rotor portion and a rotating shaft portion, the rotor portion being configured to rotate about an axis of rotation displaced from a central axis of the inner circumferential surface by a predetermined distance, the rotating shaft portion being configured to transmit a rotational force from an outside to the rotor portion,a frame that closes one of openings defined by the inner circumferential surface of the cylinder and supports the rotating shaft portion by a main bearing section thereof,a cylinder head that closes other of the openings defined by the inner circumferential surface of the cylinder and supports the rotating shaft portion by a main bearing section thereof, andat least one vane provided in the rotor portion, the at least one vane having a tip projects from the rotor portion and having a shape of an arc that is convex outward; anda vane supporting device that supports the vane such that the refrigerant is compressed in a space defined by the vane, an outer circumference of the rotor portion, and the inner circumference surface of the cylinder and such that a line normal to the arc at the tip of the vane and a line normal to the inner circumferential surface of the cylinder always substantially coincide with each ...

Refrigerant compressor

A refrigerant compressor configured to compress ethylene fluorohydrocarbon or a mixture containing the ethylene fluorohydrocarbon as a refrigerant, the refrigerant compressor including: a compression element configured to compress the refrigerant and including a sliding component that constitutes a sliding portion; and refrigerator oil configured to be supplied to the sliding component so as to lubricate the sliding portion, wherein a polymerization inhibitor configured to suppress polymerization of the refrigerant is contained in the refrigerator oil.

REFRIGERANT COMPRESSOR

A refrigerant compressor configured to compress ethylene fluorohydrocarbon or a mixture containing the ethylene fluorohydrocarbon as a refrigerant, the refrigerant compressor including: a compression element configured to compress the refrigerant and including a sliding component that constitutes a sliding portion; and refrigerator oil configured to be supplied to the sliding component so as to lubricate the sliding portion, wherein at least one of the sliding surfaces of the sliding component is formed by non-metal, and wherein a polymerization inhibitor configured to suppress polymerization of the refrigerant is contained in the refrigerator oil. 1. A refrigerant compressor configured to compress ethylene fluorohydrocarbon or a mixture containing the ethylene fluorohydrocarbon as a refrigerant , the refrigerant compressor comprising:a compression element configured to compress the refrigerant and including a sliding component that constitutes a sliding portion; andrefrigerator oil configured to be supplied to the sliding component so as to lubricate the sliding portion,wherein at least one of the sliding surfaces of the sliding component is formed by non-metal, andwherein a polymerization inhibitor configured to suppress polymerization of the refrigerant is contained in the refrigerator oil.2. A refrigerant compressor configured to compress ethylene fluorohydrocarbon or a mixture containing the ethylene fluorohydrocarbon as a refrigerant , the refrigerant compressor comprising:a compression element configured to compress the refrigerant and including a sliding component that constitutes a sliding portion,wherein the sliding component is a sintered component in which a polymerization inhibitor configured to suppress polymerization of the refrigerant is contained, andwherein at least one of the sliding surfaces of the sliding component is formed by non-metal.3. A refrigerant compressor configured to compress ethylene fluorohydrocarbon or a mixture containing the ...

REFRIGERATION CYCLE APPARATUS

A condenser of a refrigeration cycle apparatus includes a first passage, a second passage, and a joint. The first passage connects to the compressor at a first end and is constituted of, at a second end, a first flat heat transfer tube including a plurality of passages thereof. The second passage connects to the expansion device at a first end and is constituted of, at a second end, a second flat heat transfer tube including a plurality of passages thereof. The joint joins the first flat heat transfer tube and the second flat heat transfer tube and bends a flow of the hydrofluoroolefin-based refrigerant between the first flat heat transfer tube and the second flat heat transfer tube. A length of the second passage is equal to or shorter than a length of the first passage. The joint is provided, inside thereof, with a hollow portion. 1. A refrigeration cycle apparatus comprising:a refrigeration cycle circuit including a compressor, a condenser, and an expansion device; andhydrofluoroolefin-based refrigerant charged into the refrigeration cycle circuit, a first passage connecting to the compressor at a first end and constituted of, at a second end, a first flat heat transfer tube including a plurality of passages thereof,', 'a second passage connecting to the expansion device at a first end and constituted of, at a second end, a second flat heat transfer tube including a plurality of passages thereof, and', 'a joint joining the first flat heat transfer tube and the second flat heat transfer tube, bending a flow of the hydrofluoroolefin-based refrigerant between the first flat heat transfer tube and the second flat heat transfer tube,, 'the condenser including'}a length of the second passage being equal to or shorter than a length of the first passage,the joint being provided, inside thereof, with a hollow portion, having a chamber having a side surface to which the first flat heat transfer tube and the second flat heat transfer tube connect, and a portion of the ...

INDOOR UNIT FOR AIR-CONDITIONING APPARATUS

An indoor unit for an air-conditioning apparatus includes a case, an air-sending fan, and a heat exchanger unit. The heat exchanger unit includes a plurality of heat-transfer pipes extending in a vertical direction and forming a plurality of refrigerant passages in a width direction of the case and an air flow direction, and a plurality of headers connected to both ends of the plurality of heat-transfer pipes to allow the refrigerant to flow between the plurality of heat-transfer pipes. The plurality of headers include a plurality of division headers dividing and connecting the plurality of heat-transfer pipes arranged in the air flow direction and connecting in parallel the plurality of heat-transfer pipes arranged in the width direction, and a return header connecting and turning back the plurality of divided refrigerant passages arranged in the air flow direction and connecting in parallel the plurality of heat-transfer pipes arranged in the width direction. 1. An indoor unit for an air-conditioning apparatus comprising a case including a front case and a back case , an air-sending fan accommodated in the case , and a heat exchanger unit provided to cover the air-sending fan and configured to exchange heat between refrigerant and air ,the heat exchanger unit includinga plurality of heat-transfer pipes extending in a vertical direction and forming a plurality of refrigerant passages in an air flow direction and a width direction of the case, anda plurality of headers connected to both ends of the plurality of heat-transfer pipes to allow the refrigerant to flow between the plurality of heat-transfer pipes,the plurality of headers includinga plurality of division headers dividing and connecting the plurality of refrigerant passages arranged in the air flow direction and connecting in parallel the plurality of refrigerant passages arranged in the width direction of the case, anda return header connecting and turning back the plurality of refrigerant passages ...

INDOOR UNIT FOR AIR-CONDITIONING APPARATUS

An indoor unit for an air-conditioning apparatus includes a main heat exchanger unit and a sub heat exchanger unit, the main heat exchanger unit includes a first main heat exchanger disposed at a front side of a case and a first heat-transfer pipe extending in a vertical direction, and a second main heat exchanger disposed at a back side of the case and a second heat-transfer pipe extending in the vertical direction. The sub heat exchanger unit includes a leeward-side first sub heat exchanger disposed at a leeward side of the first main heat exchanger and a heat-transfer pipe extending in a width direction, and a leeward-side second sub heat exchanger including a heat-transfer pipe extending in the width direction of the case. The leeward-side second sub heat exchanger has a lower end surface located above an air passage wall and is disposed at a leeward side of the second main heat exchanger. 1. An indoor unit for an air-conditioning apparatus comprising a case , an air-sending fan accommodated in the case , a main heat exchanger unit provided to cover the air-sending fan and configured to exchange heat between refrigerant and air , and a sub heat exchanger unit provided to a leeward side of the main heat exchanger unit ,the main heat exchanger unit includinga first main heat exchanger disposed at a front side of the case and including a first heat-transfer pipe extending in a vertical direction, anda second main heat exchanger disposed at a back side of the case and including a second heat-transfer pipe extending in the vertical direction,the case including an air passage wall arranged between the air-sending fan and the second main heat exchanger and forming an air passage through which air sent from the air-sending fan flows,the sub heat exchanger unit includinga leeward-side first sub heat exchanger disposed at a leeward side of the first main heat exchanger and including a heat-transfer pipe extending in a width direction of the case, anda leeward-side second ...

REFRIGERATION CYCLE APPARATUS

A refrigeration cycle apparatus includes refrigerant circuits in which a high pressure shell compressor, an outdoor heat exchanger, an expansion valve, and an indoor heat exchanger are connected; a mixed refrigerant containing 1,1,2-trifluoroethylene and a refrigerant other than 1,1,2-trifluorothylene and circulating through the refrigerant circuits; and a refrigerating machine oil enclosed in the refrigerant circuits and adjusted such that 1,1,2-trifluoroethylene will be more soluble therein than the other refrigerant is. 1. A refrigeration cycle apparatus comprising:a refrigerant circuit in which a high pressure shell compressor, a condenser, an expansion device and an evaporator are connected;a mixed refrigerant containing 1,1,2-trifluoroethylene and an other refrigerant different from the 1,1,2-trifluoroethylene and circulating through the refrigerant circuit; anda refrigerating machine oil enclosed in the refrigerant circuit and adjusted such that the 1,1,2-trifluoroethylene is more soluble in the refrigerating machine oil than the other refrigerant is.2. The refrigeration cycle apparatus of claim 1 , wherein the other refrigerant is difluoromethane.3. The refrigeration cycle apparatus of claim 2 , wherein a ratio of the 1 claim 2 ,1 claim 2 ,2-trifluoroethylene in the mixed refrigerant is 60 wt % or less.4. The refrigeration cycle apparatus of claim 1 , wherein a weight ratio of the mixed refrigerant enclosed in the refrigerant circuit is equal to or more than a weight ratio of the refrigerant machine oil claim 1 , but not more than four times the weight ratio of the refrigerating machine oil.5. The refrigeration cycle apparatus of claim 1 , wherein under operating conditions in which a dew point temperature is 40 degrees C. and a temperature of the refrigerating machine oil accumulated in the high pressure shell compressor is 60 degrees C.:an amount of the 1,1,2-trifluoroethylene dissolved per 100 parts by weight of the refrigerating machine oil is 30 parts ...

DEHUMIDIFIER

A dehumidifier includes: a housing; a refrigerant circuit configured to allow low GWP refrigerant to circulate therethrough, the refrigerant circuit including a compressor having a variable operating frequency, a condenser, a pressure reducing device, and an evaporator, which are provided in the housing, the low GWP refrigerant being flammable and having a value of GWP of 6 or less; a blowing fan, which is provided in the housing, and is configured to take in air in a room into the housing and cause the taken-in air to pass through the evaporator and the condenser before blowing out the air from the housing into the room; and a water storage tank, which is provided below the evaporator, and is configured to accumulate dew condensation water generated in the evaporator, a number of refrigerant paths passing through the evaporator being greater than a number of refrigerant paths passing through the condenser. 12-. (canceled)5. The dehumidifier of claim 3 , wherein the low GWP refrigerant is a single refrigerant containing hydrofluoroolefin having a double bond between carbon and carbon as a base component or a mixture refrigerant containing the single refrigerant.6. The dehumidifier of claim 3 , wherein the low GWP refrigerant is a mixture refrigerant in which nonflammable refrigerant is mixed into a refrigerant containing hydrofluoroolefin having a double bond between carbon and carbon as a base component.7. The dehumidifier of claim 6 , wherein the nonflammable refrigerant is mixed into the mixture refrigerant at a concentration of 10% to 12%.8. The dehumidifier of claim 3 , wherein a refrigerant filling amount to be filled in the dehumidifier is equal to or smaller than a refrigerant amount calculated by the following expression based on a desired dehumidifying amount.{'br': None, 'i': 'g]=', 'Refrigerant Amount [7.03×Dehumidifying Amount [1/day]−1.91'}9. The dehumidifier of claim 3 , wherein a flow passage sectional area of the evaporator is larger than a flow ...

REFRIGERATION CYCLE APPARATUS

A refrigeration cycle apparatus includes refrigerant circuits in which a high pressure shell compressor, an outdoor heat exchanger, an expansion valve, and an indoor heat exchanger are connected; a mixed refrigerant made up of a mixture of 1,1,2-trifluoroethylene, difluoromethane, and 2,3,3,3-tetrafluoropropene and configured to circulate through the refrigerant circuits, the mixed refrigerant containing less than 50 wt % of 1,2,2-trifluoroetylene and a mixing ratio of difluoromethane being between 0.7 times and two times (both inclusive) that of 1,2,2-trifluoroetylene in terms of weight ratio, in a state before the mixed refrigerant is enclosed in the refrigerant circuits; and a refrigerating machine oil enclosed in the refrigerant circuits and prepared such that difluoromethane is least soluble in the refrigerating machine oil. 1. A refrigeration cycle apparatus comprising:a refrigerant circuit in which a high pressure shell compressor, a condenser, an expansion mechanism and an evaporator are connected;a mixed refrigerant circulating through the refrigerant circuit and containing 1,1,2-trifluoroethylene, difluoromethane and 2,3,3,3-tetrafluoropropene mixed with each other, wherein, in a state prior to introduction of the mixed refrigerant into the refrigerant circuit, a mixing ratio of 1,2,2-trifluoroetylene is less than 50 wt % and a mixing ratio of difluoromethane is 0.7 times a mixing ratio of 1,2,2-trifluoroetylene or larger, but not more than two times of the mixing ratio of 1,2,2-trifluoroetylene in terms of weight ratio; anda refrigerating machine oil enclosed in the refrigerant circuit and prepared such that the difluoromethane is least soluble therein, from among 1,1,2-trifluoroethylene, difluoromethane and 2,3,3,3-tetrafluoropropene.2. The refrigeration cycle apparatus of claim 1 , wherein the refrigerating machine oil is prepared such that 2 claim 1 ,3 claim 1 ,3 claim 1 ,3-tetrafluoropropene is more soluble than the 1 claim 1 ,1 claim 1 ,2- ...

HEAT EXCHANGER AND REFRIGERATION CYCLE DEVICE

In a heat exchanger, a first heat exchange unit is formed by curving a third heat exchange unit having a planar shape through L-shape bending, and a second heat exchange unit is formed by curving a fourth heat exchange unit having a planar shape through the L-shape bending, independently of the third heat exchange unit. The first heat exchange unit and the second heat exchange unit are arranged so as to be opposed to each other along a corner portion between adjacent two side surfaces of a casing. 15-. (canceled)6. A refrigeration cycle apparatus , comprising a circuit including a compressor , an outdoor heat exchanger , an expansion unit , and an indoor heat exchanger ,the outdoor heat exchanger including a fan, a first heat exchanger, and a second heat exchanger arranged closer to a leeward side than the first heat exchanger with respect to an airflow generated by the fan,the first heat exchanger and the second heat exchanger being connected to a first collection pipe respectively through corresponding first distribution pipes,the first heat exchanger and the second heat exchanger being connected to a branch unit being one end of a second collection pipe respectively through corresponding second distribution pipes,another end of the second collection pipe being connected to the expansion unit, anda length over which the first heat exchanger extends being shorter than a length over which the second heat exchanger extends.7. A refrigeration cycle apparatus according to claim 6 ,wherein the second heat exchanger includes a curved portion, andwherein the first heat exchanger extends straight in plan view without including a curved portion.8. A refrigeration cycle apparatus according to claim 7 ,wherein the second heat exchanger includes a straight portion, and{'b': 1', '2, 'wherein an extension length L of the first heat exchanger is the equal to or shorter than an extension length L of the straight portion of the second heat exchanger.'} The present invention relates ...

Outdoor unit

Provided is an outdoor unit for use in a refrigeration cycle apparatus circulating refrigerant mixture inclusive of 1,1,2-trifluoroethylene, the outdoor unit including: a casing; a pipe configured to allow the refrigerant mixture to flow through the pipe, the pipe being accommodated inside the casing and including a bend portion, the bend portion including a breakage-guide structure having a pressure resistance lower than a pressure resistance of rest of the pipe; and a plate interposed between the breakage-guide structure and outside of the casing.

Enclosed motor compressor of a two cylinder type

Vane-type compressor having an oil supply channel between the oil resevoir and vane angle adjuster

A vane-type compressor includes a rotor shaft that includes rotating shaft portions and a rotor portion, which are integrated with one another. A lower end of the rotating shaft is disposed in an oil reservoir. The vane-type compressor also includes vane aligners disposed at both end portions of vanes, and recess portions, which are respectively formed in a frame and a cylinder head so as to be concentric with an inner circumferential surface of a cylinder. Outer circumferential surfaces of the vane aligners are slidably supported by the recess portions. In the rotor shaft, oil supply channels, which allow communication between the oil reservoir and the recess portions of the frame and the cylinder head, and an oil pump, which supplies refrigerating machine oil in the oil reservoir to the oil supply channels, are provided.

Vane-type compressor

A vane compressor (200) includes a cylinder (1), a rotor portion (4a), vanes (5a and 6a), and a first discharge port (1d) allowing a refrigerant in a compression chamber (11) to be discharged therethrough. The vanes (5a and 6a) are disposed inside the rotor portion (4a) and held rotatably about the center of a cylinder inner circumferential surface (1b), partition a space between the cylinder inner circumferential surface (1b) and the rotor portion (4a), and form the compression chamber (11). A second discharge port (1e) is disposed at a location having a phase angle smaller than that at the first discharge port (1d), being open to the cylinder inner circumferential surface (1b), and communicating with the compression chamber (11). The second discharge port (1e) includes an opening portion to the compression chamber (11), the opening portion having a width in the circumferential direction, the width being equal to or smaller than the width of the tip of each of the vanes (5a and 6a).

Refrigeration cycle apparatus

The present invention makes it possible to obtain a refrigeration cycle device that uses HFO-1123, said device making it possible to suppress disproportionation reactions. This refrigeration cycle device 10 is provided with: refrigerant circuits 11a, 11b in which a high-pressure shell-type compressor 12, an exterior heat exchanger 14, an expansion valve 15, and an interior heat exchanger 16 are connected; a mixed refrigerant that is obtained by mixing 1,1,2-trifluoroethylene, difluoromethane, and 2,3,3,3-tetrafluoropropene, and circulates in the refrigerant circuits 11a, 11b, said mixed refrigerant having, in a state before being enclosed in the refrigerant circuits 11a, 11b, less than 50 wt% of 1,1,2-trifluoroethylene, and having a difluoromethane mixing ratio that is at least 0.7 and at most 2 times that of 1,1,2-trifluoroethylene by weight ratio; and a refrigerator oil 60 being adjusted such that the difluoromethane is, from among the refrigerants constituting the mixed refrigerant, the least soluble therein, and being enclosed inside the refrigerant circuits 11a, 11b.

Refrigeration cycle device

A refrigeration cycle device (10) includes: a casing (40) that configures the outer contour of an outdoor machine (30), has a machine chamber (M) and a blowing chamber (F) formed therewithin, and has formed an introduction hole (45) for introducing outside air into the machine chamber (M); a partition plate (50) that partitions the interior of the casing (40) so as to demarcate the machine chamber (M) and the blowing chamber (F); a refrigeration cycle circuit, of which at least a portion is disposed in the machine chamber (M), and through which a combustible refrigerant circulates; and a blower (35) disposed in the blowing chamber (F). A blow-through hole (51) connecting from the machine chamber (M) to the blowing chamber (F) is formed in a bottom part of the partition plate (50). The outside air introduced into the machine chamber (M) from the introduction hole (45) flows through the blow-through hole (51) and into the blowing chamber (F), and by means of the blower (35), is sent outside the casing (40) from a blow-out opening formed in the blowing chamber (F).

Rotary compressor

【課題】ローリングピストン両端面にかかる圧力の差を小さくして、ローリングピストンの端面摩耗やカジリ、摩擦力増大による圧縮機の入力の増加を抑制したロータリ圧縮機を提供することを目的とする。 【解決手段】密閉容器１ａ内に電動要素３と、この電動要素３により回転軸１８を介して駆動される、二つの圧縮要素とを有し、密閉容器１ａ内が中間圧又は低圧となるロータリ圧縮機において、二つの圧縮要素の間を仕切る中間仕切板１６と、二つの圧縮要素のそれぞれに設けられた回転軸１８を支持する軸受と、密閉容器１ａ内が中間圧の場合は高段側の圧縮要素の軸受の、また密閉容器１ａ内が低圧の場合は二つの圧縮要素の軸受の軸方向端面に形成され、中間仕切板１６の内径とほぼ同等の外径の凹部２０とを備えたことを特徴とする。 【選択図】図１

Refrigeration cycle apparatus

From recent study of combustion of an HFC refrigerant that has a low GWP but is flammable, it has been found that the combustion scale tends to increase as the absolute humidity increases. In a refrigeration cycle apparatus using such a refrigerant, it is necessary to increase safety against unexpected refrigerant leakage in consideration of this tendency. This refrigeration cycle apparatus includes a compressor having a compression mechanism section in an enclosed container and configured to compress and discharge a refrigerant so as to circulate the refrigerant in a refrigerant circuit, and an outdoor unit installed outdoors and having a housing divided by a partition plate into a fan chamber and a machine chamber including the compressor. The refrigerant is a flammable HFC refrigerant. The refrigeration cycle apparatus further includes a desiccant attached in thermal contact with a surface of the enclosed container of the compressor whose temperature is increased by a gas refrigerant compressed by the compression mechanism section during operation of the compressor so that the temperature becomes a high temperature near a temperature of the compressed gas refrigerant, and adsorbs water from air in the machine chamber during non-operation of the outdoor unit.

Encapsulated double cylinder motor compressor

Vane type compressor

【課題】ベーン先端部をシリンダ内周面に非接触として高性能を確保し、且つ、密閉容器を小型化することが可能なベーン型圧縮機を提供する。【解決手段】円筒状で、軸方向の両端が開口しているシリンダ１と、シリンダ１の軸方向の両端を閉塞するシリンダヘッド３及びフレーム２と、シリンダ１内で回転するシャフト部と、シリンダ１の内周面の中心から偏芯して回転するロータと、シリンダ１の内周面の中心周りに回転可能且つシリンダ１の径方向に移動可能にロータに支持されたベーン部４ｃとを有するベーン型圧縮機であって、ベーン部４ｃがシャフト部と一体的に回転するように構成され、シャフト部の回転力がベーン部４ｃを介してロータを回転させるようになっており、ロータの回転中心がシャフト部の回転中心に対して偏芯して配置され、且つ、シャフト部の回転中心とシリンダ１の内周面の中心とが一致している。【選択図】図１

Heat pump apparatus

A heat pump apparatus, including: a two-cylinder compressor including: an electric motor; two compression units to be driven by the electric motor, the two-cylinder compressor being structured to switch between two operation modes including single operation in which one of the compression units is brought into a non-compression state, and parallel operation in which both the compression units are brought into a compression state; an inverter drive control device supplying drive power to the electric motor of the two-cylinder compressor; an operation mode detecting-determining unit determining a current operation mode based on an electric signal acquired from the inverter drive control device; and a capacity control device determining a rotating frequency of the electric motor so that a temperature of a target object is brought close to a set value, to thereby control the inverter drive control device based on a result of determination of the operation mode detecting-determining unit.

Fluid device with rotary vane and compressor

In the present invention, there is disclosed a vane rotation type fluid device comprising a compression element (12) or an expansion element for compression or expansion of coolant, and an electrically controlled element (15) for driving the compression element (12) or the expansion element within a sealed container. The compression or expansion element (12) comprising means for controlling the position of a vane (8) is arranged along internal peripheral surface of a cylinder (5). The control means have a ring-shaped groove (17) that is arranged in at least one of two bearings (3, 4) and is performed co-axially with the cylinder (5) internal peripheral surface, and a ring (9), which is slidably mounted in the ring-shaped groove (17) and is connected with the vane (8) end. The position control means also have at least one opening (8a, 9a) for a pin (10), performed in at least one vane (8) and in the ring (9), a cylindrical pin (10), inserted in the pin opening (8a, 9a), wherein the vane (8) is rotatably mounted relative to the ring-shaped groove (17). The vane (8), having a rounded-off end, and the pin (10) are situated so that the center of the rounded-off end of the vane (8) is identical with the center of the pin (10).

Vane compressor with vane aligners

There is provided a vane compressor with a plurality of vanes having a structure in which a rotor portion and a rotary shaft are unitarily formed so as to reduce bearing sliding loss of the rotary shaft and reduce gas leakage loss by narrowing a space formed between the rotor portion and the inner peripheral surface of a cylinder. In the vane compressor with the plurality of vanes according to the present invention, an angle α of a circular arc constituting the partial ring shape of each vane aligner satisfies a relationship of [ Equation ⁢ ⁢ 9 ] ⁢ α < 2 ⁢ tan - 1 ⁢ { R ⁢ ⁢ sin ⁡ ( π N ) R ⁢ ⁢ cos ⁡ ( π N ) + e } ( 1 ) where R is a distance between the rotational central axis of each bush and the rotational central axis of the rotor portion, e is a distance between the central axis of the inner peripheral surface of the cylinder and the rotational central axis of the rotor portion, and N (a natural number of two or greater) is the number of the vanes.

Rotary compressor

A natural refrigerant low-pressure shell-type rotary compressor in which the amount of oil contained on the high-pressure side is reduced with sufficient lubrication and sealing performance at a sliding section secured. The compressor has a rotary refrigerant compression mechanism provided in a low-pressure enclosed container and having vanes, an oil separation element for separating lubricating oil from the refrigerant, and an oil supply passage for supplying the separated lubricating oil to a vane back pressure chamber of the compression mechanism, a crankshaft, a bearing, a cylinder, a piston, and oil supply spaces between the vanes. Vane skip is suppressed, and efficient lubrication and high sealing performance at the sliding section and a reduction in the amount of the oil contained on the high-pressure side are achieved at the same time. The compressor is highly reliable, is of low cost, has high performance, and uses a reduced amount of refrigerant.

Heat exchanger and air conditioner

COMPRESSOR OF THE LOW PRESSURE CHAMBER TYPE WITH SCROLL Piston

Motocompressore cappottato di tipo a due cilindri.

密閉型圧縮機

【課題】圧縮機の発生する熱を有効活用し、高効率で消費電力の少ない密閉型圧縮機を得ることを目的とする。 【解決手段】モーター３等の電動要素と、該電動要素によって駆動されるクランクシャフト６，シリンダー７及びローリングピストン８等の圧縮要素とが密閉容器１内に収納され、冷凍サイクルで使用される密閉型圧縮機において、密閉容器１の内周面に断熱効果を有する塗料による断熱塗装２を施すようにしたものである。 【選択図】図１

密閉型圧縮機

【課題】高圧冷媒を用いても、上側容器の強度を確保しつつ、気密端子やその周辺に設置する付属品の設計、取り付けを容易にできるようにする。【解決手段】密閉容器３の上側容器２の蓋部２ａを、円弧の中心が密閉容器の内側にある複数の球面３１、円弧の中心が密閉容器の外側にある複数の球面３２、又は円弧の中心が密閉容器の内側にある球面３１と円弧の中心が密閉容器の外側にある球面３２との組合わせによって、全体として円蓋状に形成する。【選択図】図２

除湿機

【課題】 可変速運転が可能な小型、軽量で持ち運びやすい、消費電力の少ない、低騒音で低振動で信頼性の高い除湿機を得ることを目的とする。 【解決手段】 冷凍サイクルを構成する凝縮器と蒸発器を同一本体内に収納し、交流電圧を直流電圧に変換するコンバータ回路と、前記コンバータ回路にて直流に変換された電圧を使用して任意の電圧、周波数、位相の交流電圧に変換するインバータ回路と、前記インバータ回路で生成される電圧、周波数、位相の大きさを制御する制御回路と、前記制御回路で制御され、前記インバータ回路が出力する電圧、周波数、位相にて駆動される直流ブラシレスモータを搭載した圧縮機と、を本体内に備えた。 【選択図】 図１

冷凍空調サイクル装置

【課題】 二酸化炭素など高圧冷媒を使用する冷凍空調サイクルで、密閉容器コスト抑制の為に低圧シェルを用いると、潤滑油持ち出しが大きく、減圧装置を伴った油戻し回路が必要だが、差圧が大きいためキャピラリー等では減圧装置の成立が困難であった。 【解決手段】 圧縮機、高圧側熱交換器、絞り装置、低圧側熱交換器を冷媒配管で順次接続して冷凍サイクルを構成し、圧縮機密閉容器内に潤滑油を封入してなる冷凍空調サイクル装置において、圧縮機より吐出される冷媒に混合されている潤滑油を分離するオイルセパレータを圧縮機と高圧側熱交換器との間の吐出側配管に具備し、オイルセパレータにより分離された潤滑油を圧縮機と低圧側熱交換器との間の吸入側配管へ戻す油戻し回路と、油戻し回路中に冷媒流れ方向に連通する気孔を有する発泡金属等の多孔質体による減圧装置と、を備えた。 【選択図】 図１

圧縮機及びヒートポンプ式給湯機

【課題】圧縮機起動時に圧縮機構部から吐出された高温の冷媒が高温状態のまま高圧側熱交換器に送られる圧縮機を得る。 【解決手段】この発明に係る圧縮機は、第１吐出配管８に設けられた第１開閉弁１０と、第１吐出マフラ５６及び第２吐出マフラ５７に接続され、第１圧縮機構部５４及び第２圧縮機構部５５からの冷媒を密閉シェル１３の外側を通って第１吐出配管８の第１開閉弁１０の下流側に導く第２吐出配管９と、この第２吐出配管９に設けられた第２開閉弁１１とを備え、第１吐出配管８及び第２吐出配管９に流れる冷媒の流量は、第１開閉弁１０、第２開閉弁１１の開閉動作により制御される。 【選択図】図１８

Hermetický rotační chladicí kompresor

Hermetický rotační chladicí kompresor obsahuje hermetickou nádobu (1), mající elektrický hnací prvek (102) a kompresní prvek (101), tlumič (50) sání, umístěný na vnější straně hermetické nádoby (1), první sací potrubí (51) pro přivádění chladiva do tlumiče (50) sání, druhé sací potrubí (52) pro přivádění chladiva z tlumiče (50) sání do kompresního prvku (101), a přívodní potrubí (54) kapalného chladiva pro přivádění kapalného chladiva do tlumiče (50) sání. Přívodní potrubí (54) kapalného chladiva má špičkovou část (54a), vytvořenou v zužujícím se tvaru. Ve špičkové části (54a) je vytvořena množina otvorů (54c). Špičková část (54a) je uložena v tlumiči (50) sání.

除湿機

(57)【要約】 【課題】 可変速運転が可能な小型、軽量で持ち運びや すい、消費電力の少ない、低騒音で低振動で信頼性の高 い除湿機を得ることを目的とする。 【解決手段】 冷凍サイクルを構成する凝縮器と蒸発器 を同一本体内に収納し、交流電圧を直流電圧に変換する コンバータ回路と、前記コンバータ回路にて直流に変換 された電圧を使用して任意の電圧、周波数、位相の交流 電圧に変換するインバータ回路と、前記インバータ回路 で生成される電圧、周波数、位相の大きさを制御する制 御回路と、前記制御回路で制御され、前記インバータ回 路が出力する電圧、周波数、位相にて駆動される直流ブ ラシレスモータを搭載した圧縮機と、を本体内に備え た。

密閉型圧縮機

【課題】 高差圧で運転する高圧型圧縮機において、冷凍機油が圧縮機内から冷凍回路内に流出することへの対策、及び電動要素で発生する電磁騒音が圧縮機外へ伝わることを防ぐ対策が不充分であった。 【解決手段】 密閉容器４内での冷媒の流速を落とすことで冷媒が冷凍機油を上昇させる力を低減すると共に、冷媒を密閉容器４側面に衝突させることで冷凍機油と冷媒を分離し、冷凍機油が冷凍回路内に流出する問題を解消した。また、電動要素１３外周部で密閉容器４と接触させないことで電動要素１３で発生する電磁騒音が圧縮機外へ伝わる問題を解消した。 【選択図】 図１

Refrigeration cycle device

密閉形冷媒圧縮機、密閉形冷媒圧縮機の製造方法。

【課題】 密閉容器の上部蓋体と下部蓋体の製造費用を低減して、安価な密閉形冷媒圧縮機を得る。 【解決手段】 冷媒を圧縮する圧縮要素６と、圧縮要素６を駆動する電動要素７と、圧縮要素６と電動要素７を収納する密閉容器１と、を備えた密閉形冷媒圧縮機であって、密閉容器１を両端が開口する筒形状の筒体２と、筒体２の両端にそれぞれ溶接して筒体２の両端を塞ぐ二つの蓋体４，５とから形成するとともに、二つの蓋体４，５のプレス式絞り型により絞り成形した底部４ａ，５ａを有する皿形状を同一形状にした。 【選択図】 図１

ベーン型圧縮機

【課題】ベーン型圧縮機において、シール性を確保しつつベーン運動の信頼性を向上させる。 【解決手段】ベーン型圧縮機２００は、略円筒状のシリンダ１と、シリンダ１内で回転運動する円柱形のロータ部４ａおよびロータ部４ａに回転力を伝達するシャフト部４ｂ、４ｃを有するロータシャフト４と、ロータ部４ａ内に設置され、ベーン先端部５ｂ、６ｂが外側に円弧形状に形成されるベーン５、６を有している。シリンダ内周面１ｂに凹部３２が形成されており、凹部３２にロータ部４ａの一部が入り込むことによりシール領域３２ａが形成される。また、ベーン５、６が凹部３２内を回転移動する際には、ベーン先端部５ｂ、６ｂはロータ部４ａ内に位置し、シリンダ内周面１ｂの円周上に沿って移動する。 【選択図】図８Ｂ

密閉型圧縮機、溶接方法

【課題】 立てた状態で蓋部と胴部を溶接可能で、かつ、溶接部の強度が高い密閉型圧縮機を提供する。 【解決手段】 上蓋部２２の端部に略円筒形状の胴部２１に嵌合する突起部２５が設けられており、上蓋部２２の端部には開先角度Ａの傾斜端面２２ｃが設けられており、胴部２１の端面２１ｂと傾斜端面２２ｃで開先部を形成する。密閉型圧縮機１を立てた状態では胴部２１の端面２１ｂは略水平であり、溶接時に液状化した溶接金属が下方に流れることを抑制することができる。 【選択図】 図２

冷媒圧縮機及びヒートポンプ機器

【課題】高効率を実現する揺動ピストン形式の冷媒圧縮機を提供する。 【解決手段】冷媒圧縮機１００は、ピストン１３の外周側面上に凹部３１を設けて、ベーン１４のベーン先端縁１４ａを凹部３１と嵌合させて接触しながらピストン１３を偏心移動させる揺動ピストン機構３０と、ベーン１４の背面でベーン１４と連結する端部を有するレバー８１を配置し、レバー８１を回転自在に支持する支持ピン８３をレバー８１の中央部に設け、支持ピン８３の位置を駆動軸５の径方向に可動するレバー機構８０と、を備えたものである。 【選択図】図１

ベーンロータリ圧縮機

【課題】 従来のベーンロータリ圧縮機では、シリンダ内の作動室から吐出孔を介してシリンダ外へ圧縮された高圧冷媒を吐出するときすべての高圧冷媒を吐出する前に吐出弁が吐出孔を閉鎖するので、吐出孔内に高圧冷媒が残留し、次の吐出動作を行う作動室が連通したとき吐出孔内に残る高圧冷媒が作動室に逆流し再膨張・再圧縮され効率低下を招くという課題があった。 【解決手段】 この発明は、圧縮要素内の作動室と吐出孔とを連通する吐出流路上に作動室内の冷媒圧力が高圧冷媒の圧力より小さいとき高圧冷媒にて吐出弁溝の開口部からローラの外周面に向かって押し出され、作動室内の冷媒圧力が高圧冷媒の圧力より大きいとき作動室内の冷媒圧力にて吐出弁溝内に押し戻される吐出弁を備え、吐出流路を吐出弁溝の開口部から押し出された吐出弁の外周面とローラの外周面とによって閉じ、吐出弁が吐出弁溝に押し戻されることによって開くようにしたものである。 【選択図】 図２

Vane rotary compressor

In a vane rotary compressor, a discharge valve on a discharge flow channel communicates an operating chamber in a compression element with a discharge hole. The discharge valve is pushed from an opening portion of a discharge valve groove to an outer circumferential surface of a roller by a high-pressure refrigerant when pressure in an operating chamber is lower than the pressure of the high-pressure refrigerant. The discharge valve is pushed back into the discharge valve groove by the refrigerant pressure in the operating chamber when the pressure in the operating chamber is higher than the pressure of the high-pressure refrigerant. The discharge flow channel is closed by the outer circumferential surface of the discharge valve pushed out from the opening portion of the discharge valve groove and the outer circumferential surface of the roller, and opens when the discharge valve is pushed back into the discharge valve groove.

圧縮機用ベーン、ローリングピストン型圧縮機、及び圧縮機用ベーンの製造方法

【課題】ベーン又はベーンと摺動する相手材の耐摩耗性を向上させることができる圧縮機用ベーン、ローリングピストン型圧縮機、及び圧縮機用ベーンの製造方法を提供することを目的とする。 【解決手段】中空のシリンダ２０と、シリンダ２０の内周面に沿って偏心回転するローラ２１と、シリンダ２０の内周面から径方向外側に向かって形成されたベーン溝２２と、を有するローリングピストン型圧縮機１に備えられ、ベーン溝２２に摺動自在に挿入されてローラ２１の外周面に当接し、シリンダ２０内の空間を低圧側と高圧側とに分離するベーン２３であって、ステンレス鋼製の基材７０と、基材７０の窒化処理により基材７０の表面側に形成された化合物層７１と、を有し、基材７０と化合物層７１との界面７２の界面粗さＲｚは２．０μｍ以下であることを特徴とするものである。 【選択図】図３

Utěsněný kompresor

Víková část (2a) horní části (2) nádoby u utěsněné nádoby (3) má kupolovitý tvar, vytvořený jako celek prostřednictvím množiny kulových ploch (31), jejichž středy oblouků jsou umístěny na vnitřní straně utěsněné nádoby, množiny kulových ploch (32), jejichž středy oblouků jsou umístěny na vnější straně utěsněné nádoby, nebo kombinací kulové plochy (31), jejíž střed oblouku je umístěn na vnitřní straně utěsněné nádoby, a kulové plochy (32), jejíž střed oblouku je umístěn na vnější straně utěsněné nádoby.

Chladicí strojní olej

Chladicí strojní olej, využívaný s propanem jako chladivo obsahuje polyalkylenglykol, získaný pomocí kopolymerizace oxidu propylénu a oxidu ethylénu a mající viskozitu podle viskozitního stupně ISO VG32. Podíl složky oxidu etylénu polyalkylenglykolu je od 10 do 30 %.

密閉型圧縮機

【課題】 従来の密閉型圧縮機では、圧力が高い冷媒を使用する場合、特に、二酸化炭素のような圧力の高い冷媒を使用する場合、密閉容器の耐圧が充分でない。 【解決手段】 別部材に開口部を形成し、該開口部に、電動機に電力を供給する気密端子１６を開口部を貫通するように取付け、さらに、別部材を密閉容器４に形成した開口部に取付けることにより、気密端子１６を別部材を介して、密閉容器４を貫通して密閉容器４に取付けた密閉型圧縮機であって、別部材の開口部の開口を形成する開口形成部の板厚を、密閉容器４の板厚より小さくし、また、気密端子１６の別部材への取付けは、気密端子１６を開口部を貫通させ、気密端子１６と開口形成部との溶接で行い、さらに、別部材は、材質的に及び／又は構造的に開口形成部の変形に対する剛性を大きくした。 【選択図】図２

Refrigeration cycle device

A refrigeration cycle apparatus according to the present invention has a heating mode and a defrosting mode as an operation mode. The refrigeration cycle apparatus includes a compressor (10), a first heat exchanger, a second heat exchanger, an expansion valve, and a controller. The compressor (10) is driven by a motor (12). In the compressor (10), refrigeration oil is stored. The controller drives the motor (12). In the heating mode, refrigerant (RL1) circulates sequentially through the compressor (10), the first heat exchanger, the expansion valve, and the second heat exchanger. The refrigerant (RL1) is smaller in density than refrigeration oil (RO1). Inside the compressor (10), the refrigerant (RL1) in a liquid phase and the refrigeration oil (RO1) are separated into two layers in the defrosting mode. The controller increases a heat loss of the motor (12) in the defrosting mode more than the heat loss in the heating mode.

回転式圧縮機

【課題】冷媒として炭酸ガス等の自然冷媒を用いた用途においても、十分な摺動耐力を有するベーンを備えた回転式圧縮機を提供することを目的とする。 【解決手段】この発明に係る回転式圧縮機は、密閉容器内に、圧縮要素と、この圧縮要素の駆動源となる電動要素とを有し、冷媒として、炭酸ガスを使用する回転式圧縮機において、圧縮要素は、シリンダ内を偏心回転するローリングピストンと摺接し、シリンダ溝内を往復摺動するベーンを有し、ベーンは少なくともローリングピストンとの摺接面に耐摩耗性のコーティングを施すと共に、ローリングピストンと摺接する摺接部の形状を、断面が長手方向に同一の円弧形状で形成し、円弧の半径が該ベーンの厚さの２倍以上としたことを特徴とする。 【選択図】図４

Acondicionador de aire

空気調和機および空気調和機の梱包セット

【課題】空気調和機の安全性を向上させる。【解決手段】圧縮機３は、冷凍機油を貯留し、冷媒とともに冷凍機油を吐出する。冷凍機油は、冷媒とともに圧縮機３、第１熱交換器１、膨張弁５、および第２熱交換器６の順に循環する。空気調和機１００は、第１センサｓ１と、第２センサｓ２と、制御装置８とを備える。第１センサｓ１は、第１空間内の冷媒を検知する。第２センサｓ２は、第１空間内の冷凍機油の臭気を検知する。制御装置８は、第１センサｓ１からの第１検知信号および第２センサｓ２からの第２検知信号を用いて、冷媒の漏洩を検知する。【選択図】図１

ロータリ圧縮機及び蒸気圧縮式冷凍サイクル装置

【課題】圧縮機の回転方向の制御で能力制御運転ができる高効率で小型化が可能なロータリ圧縮機を得る。 【解決手段】ロータリ圧縮機１００は、正方向及び逆方向に回転自在な電動機９と圧縮機構部１０とを備えている。また、圧縮機構部１０は、ベーン１３を挟むようにシリンダ室１１ｃに連通した２つの吸入口１７ａ，１７ｂと２つの吐出口１６ａ，１６ｂが形成されている。また、圧縮機構部１０には、正方向回転時と逆方向回転時とで圧縮開始角度が異なる位置にバイパス口２０が形成され、バイパス口２０は、バイパス配管２１を介してシリンダ室１１ｃに冷媒ガスを導く吸入経路（吸入管１４ａ）に接続されている。 【選択図】図２

ショーケース

【課題】簡易な構造でナイトカバーの開閉状態を判別する開閉検知装置を備えるとともに、開閉検知装置を持たないオープンショーケースについても容易に改造氏機能を持たせる。 【解決手段】オープンショーケースの開口端部に配設されるナイトカバー２先端の引掛部を保持するナイトカバー保持具３をナイトカバー２と対向する側の開口端部に配設し、前記ナイトカバー保持具３はナイトカバー２の開閉状態を判別するナイトカバー開閉検知装置とする。 【選択図】図１

Air conditioner and packaging set for air conditioner

In an air conditioner (100) according to an aspect of the present invention, flammable refrigerant circulates in order of a compressor (3), a first heat exchanger (1), an expansion valve (5), and a second heat exchanger (6). The compressor (3) stores refrigeration oil and discharges the refrigeration oil with the refrigerant. The refrigeration oil circulates with the refrigerant in order of the compressor (3), the first heat exchanger (1), the expansion valve (5), and the second heat exchanger (6). The first heat exchanger (1) is located in a first space. The second heat exchanger (6) is located in a second space. The air conditioner (100) includes a first sensor (s1), a second sensor (s2), and a controller (8). The first sensor (s1) detects the refrigerant in the first space. The second sensor (s2) detects an odor of the refrigeration oil in the first space. The controller (8) detects a leak of the refrigerant using a first detection signal from the first sensor (s1) and a second detection signal from the second sensor (s2).

Air conditioner

空気調和機

【課題】空気調和機の安全性を向上させる。【解決手段】圧縮機３は、冷凍機油を貯留し、冷媒とともに冷凍機油を吐出する。冷凍機油は、冷媒とともに圧縮機３、第１熱交換器１、膨張弁５、および第２熱交換器６の順に循環する。空気調和機１００は、第１センサｓ１と、第２センサｓ２と、制御装置８とを備える。第１センサｓ１は、第１空間内の冷媒を検知する。第２センサｓ２は、第１空間内の冷凍機油の臭気を検知する。制御装置８は、第１センサｓ１からの第１検知信号および第２センサｓ２からの第２検知信号を用いて、冷媒の漏洩を検知する。【選択図】図１

防振体、防振支持装置及びこれらを使用した圧縮機

(57)【要約】 【課題】 従来の中部中空な防振体である防振ゴムを支 持台から突設した支持棒に装着した防振支持装置は、支 持棒と防振ゴムとの接触部が、振動発生機器である圧縮 機の脚部を防振ゴムに固定する部分と近く、脚部から伝 達された振動がこの接触部から支持棒を経て支持台に伝 わり易いという問題があった。 【解決手段】 防振ゴム３の上端部３ａに圧縮機１の脚 部１ａを嵌合する外周溝３ｂを有し、且つ防振ゴム３の 上端部３ａは支持棒２ａの外径に対して防振ゴム３の変 形により支持棒２ａと接触しない充分な隙間を確保する 内径を有し、中間部３ｅに減衰特性を持たせ、且つ、外 周溝３ｂから充分離れた防振ゴム３の下端部３ｃに支持 棒２ａと密着する突部３ｄを設けたことにより、圧縮機 １の振動の支持台２への伝播を緩和できる防振支持装置 が得られる。

Method for compressing a regrigerant

Refrigerant compressor including a polymerization inhibitor contained therein

A refrigerant compressor configured to compress ethylene fluorohydrocarbon or a mixture containing the ethylene fluorohydrocarbon as a refrigerant, the refrigerant compressor including: a compression element configured to compress the refrigerant and including a sliding component that constitutes a sliding portion; and refrigerator oil configured to be supplied to the sliding component so as to lubricate the sliding portion, wherein a polymerization inhibitor configured to suppress polymerization of the refrigerant is contained in the refrigerator oil.

Tekutinové zarízení s otácivou lopatkou a kompresor

Kompresní prvek (12) a elektricky ovládaný prvek (15) pro pohon kompresního prvku (12) jsou usporádány v utesneném plášti. Kompresní prvek (12) obsahuje hrídel (6), válec (7), válec (5), dve ložiska (3, 4), prepážkovou lopatku (8), vstup (18), výstup (19) a prostredky pro regulaci polohy. Prostredky pro regulaci polohy regulují koncovou polohu lopatky (8) tak, že konec lopatky (8) je usporádán podél vnitrní obvodové plochy válce (5), obsahující prstencovitou drážku (17), která je opatrena alespon jedním ze dvou ložisek (3, 4) a je vytvorena souose s vnitrní obvodovou plochou válce (5), a prstenec (9), který je posuvne umísten v prstencovité drážce (17) a je spojen s koncem lopatky (8). Lopatkové rotacní tekutinové zarízení a kompresor jsou vytvoreny pro snížení ztráty v dusledku posuvného pohybu mezi koncem lopatky a vnitrní obvodovou plochou válce pro zlepšení úcinnosti komprese nebo úcinnosti expanze.

Utěsněný kompresor

Utěsněný kompresor (100) obsahuje výtlakovou trubku (9) a sací trubku (7), přes které cirkuluje chladivo v chladicím okruhu, utěsněnou nádobu (3), obsahující spodní část (1) nádoby, tvarovanou jako válec se dnem, a horní část (2) nádoby, tvarovanou jako válec s víkem. Horní část (2) nádoby je pevně připevněna ke spodní části (1) nádoby, a úsek (4) kompresního mechanismu a úsek (5) motoru, uspořádané v utěsněné nádobě (3), přičemž úsek (5) motoru je uspořádán pro pohánění úseku (4) kompresního mechanismu. Víková část (2a) horní části (2) nádoby má kupolovitý tvar, vytvořený celkově kombinací kulové plochy (31), jejíž střed oblouku je umístěn na vnitřní straně utěsněné nádoby (3), a kulové plochy (32), jejíž střed oblouku je umístěn na vnější straně utěsněné nádoby (3).

冷凍サイクル装置

【課題】圧縮機において、１，１，２−トリフルオロエチレン（ＨＦＯ−１１２３）の不均化反応による爆発を防止する。【解決手段】圧縮機１２と、第１熱交換器（室外熱交換器１４）と、膨張機構（膨張弁１５）と、第２熱交換器（室内熱交換器１６）とが接続され、１，１，２−トリフルオロエチレン（ＨＦＯ−１１２３）およびトランス−１，２−ジフルオロエチレン（ＨＦＯ−１１３２（Ｅ））を含む冷媒が循環する冷媒回路１１ａ、１１ｂを備える。【選択図】図１

密閉型回転圧縮機

(57)【要約】 【課題】 電動要素の上側に油を上げないように、電動 要素の下側で油分離を確実に行うこと。 【解決手段】 電動要素１０２の回転子８に上下方向に 連通する複数のガス流路８ａを形成し、それらのガス流 路８ａの流路面積の合計を、圧縮要素１０１のシリンダ の押しのけ量の合計および最大回転数に対して、下記の 関係を満たすように設定している。 〔流路面積（ｍｍ 2 ）〕／｛〔シリンダの押しのけ量合 計（ｍｍ 3 ）〕×〔最大回転数（ｒｐｓ）〕｝＞０．０ ００２５

ベーン型圧縮機

【課題】高速運転時の圧力損失が低減し、高効率なベーン型圧縮機を提供する。 【解決手段】この発明に係るベーン型圧縮機は、略円筒状で、軸方向の両端が開口し、冷凍サイクルの低圧側に連通する吸入ポートを有するシリンダと、シリンダの軸方向の両端を閉塞するシリンダヘッド及びフレームと、シリンダ内で回転運動する円柱形のロータ部及びロータ部に回転力を伝達するシャフト部を有するロータシャフトと、ロータ部内に設置され、先端部が外側に円弧形状に形成される１枚以上のベーンを有するベーン型圧縮機において、ベーンは、ベーンの先端部がシリンダの内周面に沿って、シリンダの内周面との間に所定の隙間を保ちながら摺動するようにロータ部に保持され、シリンダの内周面に、シリンダの一方の開口部もしくはシリンダの他方の開口部の少なくともいずれかに連通し、吸入ポートが開口する切欠き部が形成されたものである。 【選択図】図２

洗濯機

(57)【要約】 【課題】 駆動機構の小型化および低コスト化が図れ、 かつ低騒音な洗濯機を提供する。 【解決手段】 洗濯兼脱水槽５と、洗濯兼脱水槽５内に 配設された攪拌翼５０と、洗濯兼脱水槽５の下部に配設 され洗濯兼脱水槽５および攪拌翼５０を回転駆動する駆 動機構８とを備えた洗濯機において、駆動機構８を１つ のハウジングに収容したものである。

密閉型圧縮機

【課題】 ステータ１６の変形を防止して電動要素の変形の影響を防止できる密閉型圧縮機を得る。 【解決手段】 密閉容器１内に、ロータ１５とロータ１５の外周に配置したステータ１６とを有する電動要素１４と、電動要素１４により駆動されて冷媒を圧縮する圧縮要素６と、ステータ１６と密閉容器１の間に介在し、円筒形状の内周２０ａにステータ１６の外周１６ａを当接させてステータ１６を支持する中間部材２０と、を備え、中間部材２０には円筒形状の長さ方向に貫通して圧縮要素６から密閉容器１内に放出された冷媒を流通させる全周に分布した複数の貫通穴２１を設けた。 【選択図】 図１

Způsob provozování hermetického kompresoru

Způsob provozování hermetického kompresoru (100), zejména při jeho rozběhu, kde hermetický kompresor (100) obsahuje: hermeticky utěsněnou nádobu (11), obsahující chladicí olej (10), který je shromážděn v její spodní části, kompresní jednotku (30), která je umístěna v hermeticky utěsněné nádobě (11) pro vytlačování vysokotlakého chladiva (9) do vnitřního prostoru hermeticky utěsněné nádoby (11), a motorovou jednotku (40), která je umístěna v hermeticky utěsněné nádobě (11) pro pohánění kompresní jednotky (30), zahrnuje následující kroky. Zjišťuje se teplota v blízkosti spodní části hermeticky utěsněné nádoby (11) pomocí teplotního snímače (8), který je umístěn ve spodní části hermeticky utěsněné nádobě (11) nebo na spodní části boční stěny hermeticky utěsněné nádoby (11), kterážto boční stěna je připevněna ke spodní části. Motorová jednotka (40) pohání kompresní jednotku (30) předem stanovenou rychlostí otáčení nebo nižší rychlostí otáčení od zahájení provozu hermetického kompresoru (100) až do doby, kdy teplotní snímač (8) zjistí vyšší teplotu, než je předem stanovená teplota, při které chladivo (9), ponořené pod chladicím olejem (10), vyplave na hladinu chladicího oleje (10). Motorová jednotka (40) pohání kompresní jednotku (30) vyšší rychlostí otáčení, než je předem stanovená rychlost, když teplotní snímač (8) zjistí vyšší teplotu než je předem stanovená teplota.

横置回転型圧縮機

(57)【要約】 【課題】 吐出マフラーと端軸受外周面との隙間から冷 媒とともに冷凍機油が、吐出パイプ方向に放出されるた め、吐出パイプから圧縮機外部へ持ち出されやすくな り、圧縮機内の冷凍機油が不足し、摺動部の焼き付き現 象を起こすなどの問題点があった。また、端軸受と吐出 マフラーとの隙間を塞ぐため、端軸受の外周面で密着す るように、吐出マフラーを圧入すると、端軸受の内周が 歪み、端軸受と回転軸がロックするなどの問題点があっ た。 【解決手段】 圧縮要素のシリンダの反電動要素側に設 けられた端軸受と、端軸受に取り付けられ、吐出空間を 形成する吐出マフラーとを備え、吐出空間を少なくとも 吐出マフラーと、端軸受の軸受部の外周面と端面との２ 面を最少隙間で接触させ塞いだものである。