Flash tank economizer for two stage centrifugal water chillers

A system comprises the integrated combination of: a condenser having a condenser water path leg extending from a water inlet to a water outlet; a first expansion device; a flash tank economizer; a second expansion device; an evaporator having an evaporator water path leg extending from a water inlet to a water outlet; and a refrigerant flowpath passing sequentially through the condenser, the first expansion device, the economizer, the second expansion device and the evaporator. The flash tank economizer comprises a horizontally elongate body having a first end and a second end. The economizer has an inlet conduit having an outlet. The economizer has a liquid outlet, a vapor outlet, and a medium between the outlet of the inlet conduit and the liquid outlet. A length of the refrigerant flowpath between the first expansion device and the outlet of the inlet conduit is at least 0.5 m.

Slider ejecting mechanism and application method thereof

The invention discloses a slider ejecting mechanism and an application method thereof. The slider ejecting mechanism comprises a movable molding plate, an upper ejecting plate and a lower ejecting plate, wherein the movable molding plate is positioned above the upper ejecting plate and the lower ejecting plate is positioned below the upper ejecting plate. The slider ejecting mechanism is characterized in that a plurality of ejecting rods are perpendicularly arranged on the side of the upper ejecting plate facing the movable molding plate, a plurality of sliders are arranged on the lower ejecting plate and face the upper ejecting plate, the sliders pass through the upper ejecting plate and ejecting rods are mounted to the distal ends of the sliders to the lower ejecting plate. According to the slider ejecting mechanism disclosed by the invention, the secondary demoulding operation of a product in the inner cavity of the movable molding plate is performed by use of the ejecting rods which ...

Heat exchange system and method for reclaiming corrosion inhibitor in heat exchange system

A heat exchange system and a method for reclaiming corrosion inhibitor in a heat exchange system are provided by the present disclosure. The heat exchange system includes a compressor ( 1 ), a condenser ( 2 ) and an evaporator ( 3 ) connected in sequence, and the heat exchange system further includes a system for reclaiming corrosion inhibitor which includes an ejector ( 6 ) including a high-pressure fluid inlet ( 61 ) connected to an outlet ( 11 ) of the compressor, a suction fluid inlet ( 62 ) connected to the heat exchange system to extract a liquid-state refrigerant in the heat exchange system, and a fluid outlet ( 63 ) leading to bearings of the compressor, wherein a pressurizing device ( 5 ) is provided between the outlet of the compressor and the high-pressure fluid inlet of the ejector. The heat exchange system according to the embodiments of the present disclosure can provide sufficient corrosion inhibitor to the bearings of the compressor under various working conditions.

Flash Tank Economizer for Two Stage Centrifugal Water Chillers

A system () comprises the integrated combination of: a condenser () having a condenser water path leg extending from a water inlet () to a water outlet (); a first expansion device (); a flash tank economizer (); a second expansion device (); an evaporator () having an evaporator water path leg extending from a water inlet () to a water outlet (); and a refrigerant flowpath () passing sequentially through the condenser, the expansion device, the economizer, the second expansion device and the evaporator. The flash tank economizer comprises a horizontally elongate body having a first end () and a second end (). The economizer has an inlet conduit () having an outlet (). The economizer has a liquid outlet (), a vapor outlet (), and a medium () between the outlet of the inlet conduit and the liquid outlet. A length of the refrigerant flowpath between the expansion device and the outlet of the inlet conduit is at least 0.5m. 2. The system of wherein:the outlet of the inlet conduit faces the first end; andthe liquid outlet is proximate the second end.3. The system of wherein:{'b': 160', '162, 'the medium comprises a pair of perforated plates (, ).'}4. The system of wherein:the plates are parallel and spaced-apart from each other.5. The system of wherein:the plates spaced-apart from each other by a gap of 10 mm to 25 mm.6. The system of wherein:{'b': 160', '162', '170', '170, 'the plates comprise a first plate () and a second plate () and holes () of the first plate are offset from holes () of the second plate.'}7. The system of wherein:{'b': '161', 'the medium comprises a third plate () having holes offset from holes of the first plate.'}8. The system of wherein:the holes of the third plate are aligned with the holes of the first plate.9. The system of wherein:the holes of the first plate and the holes of the second plate are circular in a square array.10. The system of wherein:the holes of the first plate and holes of the second plate are circular in planform and of the ...

ECONOMIZER COMPONENT AND REFRIGERATION SYSTEM THEREOF

The present invention provides an economizer component, including: a housing; an economizer chamber and an inter-stage flow path chamber, formed inside the housing by using a separator; a condenser connecting port and an evaporator connecting port, disposed on the economizer chamber; a first connecting port and a second connecting port, connected in a multi-stage compressor unit and disposed on the inter-stage flow path chamber; and the economizer chamber being in fluid connection with the inter-stage flow path chamber inside the housing. The economizer component provided in the present invention can reduce complexity of pipe passages of a refrigeration system in which the economizer component is applied. 1. An economizer component , comprising: a housing; an economizer chamber and an inter-stage flow path chamber , formed inside the housing by using a separator; a condenser connecting port and an evaporator connecting port , disposed on the economizer chamber; a first connecting port and a second connecting port , connected in a multi-stage compressor unit and disposed on the inter-stage flow path chamber; and the economizer chamber being in fluid connection with the inter-stage flow path chamber.2. The economizer component according to claim 1 , wherein the separator comprises a first section extending along a longitudinal direction of the housing.3. The economizer component according to claim 2 , wherein the first section is a straight plate.4. The economizer component according to claim 2 , wherein the separator further comprises a second section that leaves space for the second connecting port claim 2 , and a bend is formed between the first section and the second section.5. The economizer component according to claim 4 , wherein the second section is disposed on a side near the condenser connecting port inside the housing.6. The economizer component according to claim 1 , wherein a liquid discharge hole is provided at a lowest point inside the inter-stage flow ...

GUIDING PANEL FOR CONDENSER, CONDENSER AND REFRIGERATION SYSTEM

A deflector for a condenser. The condenser has an inlet in communication with a compressor, and a deflector for guiding a refrigerant gas flow from the compressor is arranged in the condenser and at a position close to the inlet. The deflector is provided with a deflecting structure projecting toward the inlet, and the deflecting structure is configured as impermeable to the refrigerant gas flow. 1. A deflector for a condenser , wherein the condenser has an inlet in communication with a compressor , and a deflector for guiding a refrigerant gas flow from the compressor is arranged in the condenser and at a position close to the inlet , wherein the deflector is provided with a deflecting structure projecting toward the inlet , and the deflecting structure is configured as impermeable to the refrigerant gas flow;wherein the deflector includes a top plate facing the inlet, a first side plate extending from a first side of the top plate and a second side plate extending from a second side of the top plate.2. The deflector according to claim 1 , wherein the first side plate and the second side plate are of the same size.3. The deflector according to claim 1 , wherein the first side plate and the second side plate are symmetrically arranged on the first side and the second side of the top plate claim 1 , respectively.4. The deflector according to claim 1 , wherein at least one of the first side plate and the second side plate is angled downwards from the top plate claim 1 , away from the inlet.5. The deflector according to claim 1 , wherein the deflecting structure is arranged on the entire surface of the deflector.6. The deflector according to claim 1 , wherein the deflecting structure is made of steel.7. The deflector according to claim 1 , wherein the top plate claim 1 , first side plate and second side plate are planar.8. The deflector according to claim 1 , wherein the deflecting structure is fixed to a housing of the condenser by welding.9. The deflector according ...

GUIDING PANEL FOR CONDENSER, CONDENSER AND REFRIGERATION SYSTEM

The present utility model relates to a deflector for a condenser. The condenser has an inlet in communication with a compressor, and a deflector for guiding a refrigerant gas flow from the compressor is arranged in the condenser and at a position close to the inlet. The deflector is provided with a deflecting structure projecting toward the inlet, and the deflecting structure is configured as impermeable to the refrigerant gas flow. The present utility model further provides a condenser having the deflector for a condenser and a refrigeration system equipped with the condenser. The deflector for a condenser according to the present utility model not only can alleviate the impact of high-temperature high-pressure gas from the compressor but also can reduce noise and vibration. 1. A deflector for a condenser , wherein the condenser has an inlet in communication with a compressor , and a deflector for guiding a refrigerant gas flow from the compressor is arranged in the condenser and at a position close to the inlet , wherein the deflector is provided with a deflecting structure projecting toward the inlet , and the deflecting structure is configured as impermeable to the refrigerant gas flow.2. The deflector according to claim 1 , wherein the deflecting structure comprises a first side plate claim 1 , a second side plate claim 1 , and a top plate claim 1 , the first side plate and the second side plate are arranged on two sides of the top plate respectively claim 1 , and the top plate projects toward the inlet relative to the first side plate and the second side plate.3. The deflector according to claim 2 , wherein the first side plate and the second side plate are of the same size and are symmetrically arranged on the two sides of the top plate respectively.4. The deflector according to claim 1 , wherein the deflecting structure is configured as a wavy cross section with peaks and troughs claim 1 , and at least one peak points to the inlet.5. The deflector according ...

Refrigeration system and the lubrication method thereof

A refrigeration system and a lubricating method thereof. The refrigeration system ( 100 ) includes: a compressor ( 110 ), a condenser ( 120 ), an evaporator ( 130 ), and a lubrication circuit ( 200 ), the lubrication circuit including a post-lubrication flow path ( 230,240,260 ) connected from the compressor into the condenser and the evaporator respectively; and a pre-lubrication flow path ( 210,220,250 ) connected from the condenser and the evaporator into the compressor respectively; wherein after flowing from the condenser via the pre-lubrication flow path to the compressor for lubrication, a part of refrigerant for lubrication can flow back to the evaporator via the post-lubrication flow path; or after flowing from the evaporator via the pre-lubrication flow path to the compressor for lubrication, the part of refrigerant for lubrication can flow back to the condenser via the post-lubrication flow path.

REFRIGERATION SYSTEM AND THROTTLE CONTROL METHOD THEREFOR

A refrigeration system, comprising a compressor, a condenser (), a throttle flow path (), and an evaporator () connected in sequence, wherein a non-adjustable main throttle element () is disposed in the throttle flow path; and further comprising a bypass flow path (), wherein the bypass flow path is connected to the throttle flow path respectively at the upstream and downstream of the main throttle element, and provided with an adjustable auxiliary throttle element () thereon; a liquid level sensor, disposed upstream and/or downstream of the throttle flow path, and configured to detect the liquid level; and a controller, wherein the controller is configured to control the opening of the auxiliary throttle element according to a liquid level signal from the liquid level sensor. 1. A refrigeration system , comprising:a compressor, a condenser, a throttle flow path, and an evaporator connected in sequence;wherein a non-adjustable main throttle element is disposed in the throttle flow path; a bypass flow path, wherein the bypass flow path is connected to the throttle flow path respectively at the upstream and downstream of the main throttle element, and provided with an adjustable auxiliary throttle element thereon;', 'a liquid level sensor, disposed upstream and/or downstream of the throttle flow path, and configured to detect the liquid level; and', 'a controller, wherein the controller is configured to control the opening of the auxiliary throttle element according to a liquid level signal from the liquid level sensor., 'and further comprising2. The refrigeration system according to claim 1 , further comprising an economizer claim 1 , wherein the throttle flow path is connected between the condenser and the economizer and/or connected between the economizer and the evaporator.3. The refrigeration system according to claim 1 , wherein the main throttle element is an orifice plate.4. The refrigeration system according to claim 3 , wherein the orifice plate comprises a ...

REFRIGERATION SYSTEM AND CONTROLLING METHOD FOR STARTING THE REFRIGERATION SYSTEM

The present invention provides a refrigeration system, including: a compressor, a condenser, an economizer, a throttle valve, and an evaporator which are connected via a pipeline; and a pneumatic valve that includes a valve body and a drive air chamber, an air outlet of the economizer being connected to an interstage air inlet of the compressor via the valve body, and the drive air chamber being connected to a low pressure portion of the refrigeration system via a first air path, the lower pressure portion having a pressure lower than that in the economizer; wherein a first valve for controlling on/off of the first air path is disposed on the first air path. The refrigeration system can avoid liquid phase refrigerant accumulated in the economizer from entering the compressor during start to cause a liquid impact problem. 1. A refrigeration system , comprising: a compressor , a condenser , an economizer , a throttle valve , and an evaporator which are connected via a pipeline; and a pneumatic valve that comprises a valve body and a drive air chamber , an air outlet of the economizer being connected to an interstage air inlet of the compressor via the valve body , and the drive air chamber being connected to a low pressure portion of the refrigeration system via a first air path , the lower pressure portion having a pressure lower than that in the economizer; wherein a first valve for controlling on/off of the first air path is disposed on the first air path.2. The refrigeration system according to claim 1 , wherein the first valve is an electromagnetic valve.3. The refrigeration system according to claim 2 , wherein the electromagnetic valve is a normally-closed type electromagnetic valve.4. The refrigeration system according to claim 1 , wherein the low pressure portion is an evaporator.5. The refrigeration system according to claim 4 , wherein the air chamber of the pneumatic valve is connected to the top of the evaporator via the first air path.6. The ...

ECONOMIZER AND REFRIGERATION SYSTEM HAVING THE SAME

The present invention provides an economizer, including a housing having a first section and a second section; and a condenser outlet, an evaporator inlet, and a compressor intermediate-stage inlet that are disposed on the second section of the housing; wherein the first section has a contour matching a housing of a commonly used condenser, such that the first section can fit the housing of the condenser. The economizer of the present invention can better match an outer contour of a conventional condenser, so that the both can fit each other in arrangement as much as possible when applied to an overall layout of a refrigeration system, thereby significantly reducing a transverse space occupied by the refrigeration system. 1. An economizer , comprising a housing having a first section and a second section; and a condenser outlet , an evaporator inlet , and a compressor intermediate-stage inlet that are disposed on the second section of the housing; wherein the first section has a contour matching a housing of a commonly used condenser , such that the first section can fit the housing of the condenser.2. The economizer according to claim 1 , wherein the first section has a concave curved contour; and/or the second section has a convex curved contour.3. The economizer according to claim 2 , wherein the second section has an arc length greater than that of the first section.4. The economizer according to claim 1 , further comprising: a first flow-equalizing portion arranged at the downstream part of the condenser outlet in the housing.5. The economizer according to claim 4 , wherein the first flow-equalizing portion comprises a first flow-equalizing plate and a second flow-equalizing plate provided with several flow-equalizing holes claim 4 , respectively claim 4 , the first flow-equalizing plate and the second flow-equalizing plate deviating from each other.6. The economizer according to claim 5 , wherein the first flow-equalizing plate and the second flow-equalizing ...

Dual duty compression machine

A compression machine includes a refrigerant condenser, an expansion device, a refrigerant evaporator, a first compressor and a second compressor. Each compressor is arranged to receive lower pressure refrigerant vapor from the evaporator and to deliver higher pressure vapor to the condenser independently of the other compressor. The first compressor operates when the compression machine is operating in a first duty mode, for example a water-cooling mode. The second compressor operates when the compression machine is operating in a second duty mode, for example one of a water-heating mode or a brine cooling. The first compressor is selected for optimal performance in the first duty only and the second compressor is selected for optimal performance in the second duty mode only.

Refrigeration system and controlling method for starting the refrigeration system

A refrigeration system, including: a compressor, a condenser, an economizer, a throttle valve, and an evaporator which are connected via a pipeline; and a pneumatic valve that includes a valve body and a drive gas phase refrigerant chamber, an gas phase refrigerant outlet of the economizer being connected to an interstage gas phase refrigerant inlet of the compressor via the valve body, and the drive gas phase refrigerant chamber being connected to a low pressure portion of the refrigeration system via a first gas phase refrigerant path, the lower pressure portion having a pressure lower than that in the economizer; wherein a first valve for controlling on/off of the first gas phase refrigerant path is disposed on the first gas phase refrigerant path. The refrigeration system can avoid liquid phase refrigerant accumulated in the economizer from entering the compressor during start to cause a liquid impact problem.

Refrigeration system and throttle control method therefor

A refrigeration system, includes a compressor, a condenser (200), a throttle flow path (100), and an evaporator (300) connected in sequence. A non-adjustable main throttle element (110,120) is disposed in the throttle flow path. A bypass flow path (500) is connected to the throttle flow path respectively at the upstream and downstream of the main throttle element, and provided with an adjustable auxiliary throttle element (510) thereon. A liquid level sensor is disposed upstream or downstream of the throttle flow path, and configured to detect the liquid level. A controller is configured to control the opening of the auxiliary throttle element according to a liquid level signal from the liquid level sensor.

Multiple stage refrigeration system and control method thereof

A multi-stage refrigeration system (100) includes: a refrigeration loop (110), which includes a gas suction port of a multi-stage compressor (111), a condenser (112), a first throttling element (113), an evaporator (114) and an exhaust port of the multi-stage compressor which are sequentially connected through pipelines; an economizer branch (120), which includes an economizer (121), a second throttling element (122) and a first control valve (123), the economizer having an economizer liquid inlet connected to the condenser via the first throttling element, an economizer liquid outlet connected to the evaporator via the second throttling element, and an economizer exhaust port connected to an intermediate stage of the multi-stage compressor via a control valve; and a bypass branch (130), which is joined to the evaporator from the downstream of the second throttling element and connected to the condenser via the first throttling element, and on which a second control valve (131) is arranged.

Guiding panel for condenser, condenser and refrigeration system

A deflector for a condenser. The condenser has an inlet in communication with a compressor, and a deflector for guiding a refrigerant gas flow from the compressor is arranged in the condenser and at a position close to the inlet. The deflector is provided with a deflecting structure projecting toward the inlet, and the deflecting structure is configured as impermeable to the refrigerant gas flow.

Refrigeration system and the lubrication method thereof

A refrigeration system and a lubricating method thereof. The refrigeration system ( 100 ) includes: a compressor ( 110 ), a condenser ( 120 ), an evaporator ( 130 ), and a lubrication circuit ( 200 ), the lubrication circuit including a post-lubrication flow path ( 230,240,260 ) connected from the compressor into the condenser and the evaporator respectively; and a pre-lubrication flow path ( 210,220,250 ) connected from the condenser and the evaporator into the compressor respectively; wherein after flowing from the condenser via the pre-lubrication flow path to the compressor for lubrication, a part of refrigerant for lubrication can flow back to the evaporator via the post-lubrication flow path; or after flowing from the evaporator via the pre-lubrication flow path to the compressor for lubrication, the part of refrigerant for lubrication can flow back to the condenser via the post-lubrication flow path.

Throttling device and refrigeration system having the same

The present invention relates to a throttling device (10), comprising: a tank for accommodating liquid refrigerant, with an orifice plate (16) arranged at an outlet of the tank; a floating ball (11) capable of floating on a liquid surface of the refrigerant; a pivot rod (13) pivotally fixed on the tank through a pivot shaft; a connecting rod (12), with one end thereof fixedly connected with the floating ball (11), and the other end thereof fixedly connected with the pivot rod (13); a valve plate (14) fixed on the pivot rod (13) and located near an orifice of the orifice plate (16), wherein the valve plate (14) is capable of adjusting a flow area of the orifice under the action of the pivot rod (13); and a limit piece (15) located above the valve plate (14) and being movable to limit the valve plate (14). The present invention further provides a refrigeration system equipped with the throttling device (10). The throttling device (10) according to the present invention can effectively reduce surge of a centrifugal compressor.

Multiple stage refrigeration system

Refrigeration system and throttle control method therefor

A refrigeration system, comprising a compressor, a condenser, a throttle flow path, and an evaporator connected in sequence, wherein a non-adjustable main throttle element is disposed in the throttle flow path; and further comprising a bypass flow path, wherein the bypass flow path is connected to the throttle flow path respectively at the upstream and downstream of the main throttle element, and provided with an adjustable auxiliary throttle element thereon; a liquid level sensor, disposed upstream and/or downstream of the throttle flow path, and configured to detect the liquid level; and a controller, wherein the controller is configured to control the opening of the auxiliary throttle element according to a liquid level signal from the liquid level sensor.

Guiding panel for condenser, condenser and refrigeration system

A deflector for a condenser. The condenser has an inlet in communication with a compressor, and a deflector for guiding a refrigerant gas flow from the compressor is arranged in the condenser and at a position close to the inlet. The deflector is provided with a deflecting structure projecting toward the inlet, and the deflecting structure is configured as impermeable to the refrigerant gas flow.

Heat exchange system and method for reclaiming corrosion inhibitor in heat exchange system

A heat exchange system and a method for reclaiming corrosion inhibitor in a heat exchange system are provided by the present disclosure. The heat exchange system includes a compressor (1), a condenser (2) and an evaporator (3) connected in sequence, and the heat exchange system further includes a system for reclaiming corrosion inhibitor which includes an ejector (6) including a high-pressure fluid inlet (61) connected to an outlet (11) of the compressor, a suction fluid inlet (62) connected to the heat exchange system to extract a liquid-state refrigerant in the heat exchange system, and a fluid outlet (63) leading to bearings of the compressor, wherein a pressurizing device (5) is provided between the outlet of the compressor and the high-pressure fluid inlet of the ejector. The heat exchange system according to the embodiments of the present disclosure can provide sufficient corrosion inhibitor to the bearings of the compressor under various working conditions.

Orifice set and chiller system having it

A throttling device, including a tank for accommodating liquid refrigerant, with an orifice plate arranged at an outlet of the tank; a floating ball capable of floating on a liquid surface of the refrigerant; a pivot rod pivotally fixed on the tank through a pivot shaft; a connecting rod, with one end thereof fixedly connected with the floating ball, and the other end thereof fixedly connected with the pivot rod; a valve plate fixed on the pivot rod and located near an orifice of the orifice plate, wherein the valve plate is capable of adjusting a flow area of the orifice under the action of the pivot rod; and a limit piece located above the valve plate and being movable to limit the valve plate.

Heat exchange system and method for reclaiming corrosion inhibitor in heat exchange system

A heat exchange system and a method for reclaiming corrosion inhibitor in a heat exchange system are provided by the present disclosure. The heat exchange system includes a compressor (1), a condenser (2) and an evaporator (3) connected in sequence, and the heat exchange system further includes a system for reclaiming corrosion inhibitor which includes an ejector (6) including a high-pressure fluid inlet (61) connected to an outlet (11) of the compressor, a suction fluid inlet (62) connected to the heat exchange system to extract a liquid-state refrigerant in the heat exchange system, and a fluid outlet (63) leading to bearings of the compressor, wherein a pressurizing device (5) is provided between the outlet of the compressor and the high-pressure fluid inlet of the ejector. The heat exchange system according to the embodiments of the present disclosure can provide sufficient corrosion inhibitor to the bearings of the compressor under various working conditions.

Multiple stage refrigeration system and control method thereof

A multi-stage refrigeration system (100) includes: a refrigeration loop (110), which includes a gas suction port of a multi-stage compressor (111), a condenser (112), a first throttling element (113), an evaporator (114) and an exhaust port of the multi-stage compressor which are sequentially connected through pipelines; an economizer branch (120), which includes an economizer (121), a second throttling element (122) and a first control valve (123), the economizer having an economizer liquid inlet connected to the condenser via the first throttling element, an economizer liquid outlet connected to the evaporator via the second throttling element, and an economizer exhaust port connected to an intermediate stage of the multi-stage compressor via a control valve; and a bypass branch (130), which is joined to the evaporator from the downstream of the second throttling element and connected to the condenser via the first throttling element, and on which a second control valve (131) is arranged.

Multiple stage refrigeration system and control method thereof

A multi-stage refrigeration system (100) includes: a refrigeration loop (110), which includes a gas suction port of a multi-stage compressor (111), a condenser (112), a first throttling element (113), an evaporator (114) and an exhaust port of the multi-stage compressor which are sequentially connected through pipelines; an economizer branch (120), which includes an economizer (121), a second throttling element (122) and a first control valve (123), the economizer having an economizer liquid inlet connected to the condenser via the first throttling element, an economizer liquid outlet connected to the evaporator via the second throttling element, and an economizer exhaust port connected to an intermediate stage of the multi-stage compressor via a control valve; and a bypass branch (130), which is joined to the evaporator from the downstream of the second throttling element and connected to the condenser via the first throttling element, and on which a second control valve (131) is arranged.

Refrigeration system and the lubrication method thereof

A refrigeration system and a lubricating method thereof. The refrigeration system (100) includes: a compressor (110), a condenser (120), an evaporator (130), and a lubrication circuit (200), the lubrication circuit including a post-lubrication flow path (230,240,260) connected from the compressor into the condenser and the evaporator respectively; and a pre-lubrication flow path (210,220,250) connected from the condenser and the evaporator into the compressor respectively; wherein after flowing from the condenser via the pre-lubrication flow path to the compressor for lubrication, a part of refrigerant for lubrication can flow back to the evaporator via the post-lubrication flow path; or after flowing from the evaporator via the pre-lubrication flow path to the compressor for lubrication, the part of refrigerant for lubrication can flow back to the condenser via the post-lubrication flow path.

Refrigeration system and the lubrication method thereof

Refrigeration system and the lubrication method thereof

A refrigeration system (100'). The refrigeration system (100') includes: a compressor (110'), a condenser (120'), an evaporator (130'), and a lubrication circuit (200'), the lubrication circuit (200') including a post-lubrication flow path (230') connected from the compressor (110') into the evaporator (130'); and a pre-lubrication flow path (210', 220', 250') connected from the condenser (120') and the evaporator (130') into the compressor (110') respectively; wherein after flowing from the condenser (120') via the pre-lubrication flow path (210', 250') to the compressor (110') for lubrication, a part of refrigerant for lubrication can flow back to the evaporator (130') via the post-lubrication flow path (230'); or after flowing from the evaporator (130') via the pre-lubrication flow (220', 250') path to the compressor (110') for lubrication, the part of refrigerant for lubrication can flow back to the evaporator (130') via the post-lubrication flow path (230').

Protein hrz for regulating content of iron in corn and coding gene and applications thereof

The invention discloses a protein HRZ for regulating the content of iron in corn and a coding gene and applications thereof, and belongs to the technical field of plant genetic improvement. According to the invention, it is found that a gene ZmHRZ participates in regulating the content of iron in corn, and the mutation of the gene ZmHRZ will cause the accumulation of iron in tissues of corn, such as leaves, stems, female ears and grains. Therefore, the gene ZmHRZ and the coding protein HRZ thereof will be of great significance and application prospect in iron bioaugmentation of corn.