Auxiliary air-cooling double-duct engine assembly

Technical Field

The invention relates to a fuel generator the subsidiary structure, in particular to a kind of auxiliary air cooling the double duct of the engine assembly.

Background Art

Small universal mechanical has small volume and weight, get the comparatively wide range of application; for example, small-sized fuel generator due to the small volume, the structure is compact, more of the fields of application for the family life; as the generator by the engine as the power, therefore, has a plurality of heat generation, heat dissipation is the structure of the generator must be; in the prior art, in order to carry out heat radiation, the generator and engine are respectively heat-dissipating structure, the two cooling fan and their respective independent cooling air duct, the air duct structure of the more complex structure of the generator relatively large size of the whole machine, inconvenient to move and use; in particular the matching of the generator of the engine is concerned, is the major source of the generator, in order to reduce the temperature of the power generation in the case, also of the prior structure is part of the power of the heat insulation layer wrapped completely hot reason and the muffler part, reduce the heating edge of the influence of the temperature in the generator compartment, so that the structure is more complicated, increase the volume, resulting in small generator can not give full play to the advantage of its flexibility is small.

Therefore, the need for the power source of the existing generator improved cooling structure of the engine, removing the insulating layer, a more comprehensive cooling, the cooling effect of the so as to achieve better, simplifying the whole structure, the generator overall more is simple and compact, and can give full play to the advantage of the small-sized generator.

Content of the invention

In view of this, the present invention provides an auxiliary air cooling the double duct of engine assembly, removing the insulating layer, a more comprehensive cooling, the cooling effect of the so as to achieve better, simplifying the whole structure, the generator overall more is simple and compact, and can give full play to the advantage of the small-sized generator.

Auxiliary air cooling of this invention the double duct of the engine assembly, which comprises a box body and the engine is positioned in the box body, wherein the box body comprises a frame and a covering, the covering member and the engine and the gap between the generator body to form an auxiliary air duct, said auxiliary air duct is arranged in the air inlet of the cover member; the engine is provided with a cooling air duct I and II the cooling air duct, the cooling air duct I is located in an engine cylinder head, said cooling air duct II is located in an engine crankcase and crankcase cover at the bottom of the; engine is used as a power source of the generator, usually adopting a direct is connected with the drive and integrated in the structure of the same box body, which belongs to the existing portable generator, portable power generating equipment of conventional structure, in this do not repeat; the invention adopts the cooling air duct and the cooling air duct I II two cooling air duct of the engine cooling, to the engine to form a comprehensive cooling, and in the case of omni-directional away the heat generated by the engine, avoiding heat accumulation and heat insulating treatment is not required, thereby simplifying the volume of the whole equipment, and better cooling effect; at the same time, the auxiliary cooling channels for auxiliary cooling, not only increases the air output, also auxiliary cooling periphery of the engine, thus greatly reducing the accumulation of the heat in the box body, does not need to set up thermal insulation layer.

Furthermore, the cooling air duct of the cooling air duct II and I cooling air forced by the cooling fan is formed; the installation position of the cooling fan according to the arrangement and installation structure, forming a forced air cooling for cooling, ensure and improve the cooling effect.

Furthermore, the auxiliary air duct to the air inlet of the two are respectively arranged at the two transverse sides of the box body of the covering, also for the auxiliary air duct of the air inlet of the generator corresponding to the two transverse sides of the, two; transverse means and the engine and generator body are arranged between the horizontal and vertical direction of the direction; of course, can be between the two auxiliary air duct and form is not formed, an additional air volume and realize the auxiliary cooling, the elimination of cooling dead angle, in the case of the accumulation of heat is avoided.

Furthermore, the cooling air duct II and I cooling air duct and the cooling fan is formed of the branch cooling air; a cooling fan through the same realization of the two air duct of the cooling, saving installation space machine driving energy, so that the structure is more compact.

Furthermore, the auxiliary cooling air passage is located on the cooling air duct II and I cooling air duct and the air inlet end of the cooling air duct II and I from the cooling air duct, the cooling air of the cooling air duct to form a forced by the cooling fan, in the existing cooling fan on the basis of the increase of the cooling air volume, to improve cooling efficiency, and the compact structure of the whole equipment.

Furthermore, the cooling air duct II and I the outlet of the cooling air is collected in the engine muffler and discharged after cooling the silencer; using the same cooling air to realize the cooling of the muffler muffler and carry away heat around the, , prevent the accumulation of heat, the heat-insulating layer is arranged on the silencer is removed, further reduce the volume and the structure is simplified.

Furthermore, the cooling air guide cover I is composed of a formed between the cylinder head of the engine, cooling air duct II of a lower dome is formed between the bottom of the of the engine; a cooling air duct of relatively airtight, targeted for cooling, to improve cooling efficiency.

Furthermore, the cooling air duct II and I the outlet of the cooling air through a muffler housing is collected in the engine muffler; further forming comparatively sealed cooling and admirable space, is beneficial for making full take heat away, to improve cooling efficiency.

Furthermore, the upper dome and the lower dome is connected between the and the muffler housing.

The beneficial effect of the invention: the auxiliary air cooling of this invention double-duct engine assembly, the two cooling air duct of the engine with a targeted cooling, utilizing auxiliary air cooling channel auxiliary heat dissipation around the engine, and increasing the air quantity of the two cooling air duct, to form a comprehensive air-cooled structure, and reduces cooling air loss in the flow, to improve cooling efficiency, and simplifying the whole structure, and the prior use of the heat insulation is compared with the thermal insulating layer, the heat radiation effect is good, the generator overall more is simple and compact, can give full play to the advantage of the small-sized generator flexible and beneficial to protect the main body apparatus.

Description of drawings

The embodiment of Figure and with the further description of this invention.

Figure 1 is a structure diagram of double cooling air passage of the invention;

Figure 2 is a structure diagram of auxiliary cooling air duct of the invention.

Mode of execution

Figure 1 is a structure diagram auxiliary cooling air duct, as shown in Figure of a structure diagram of the present invention, Figure 2 is of the invention is shown in: the embodiment of the double duct of auxiliary air cooling of the engine assembly, which comprises a box body and the engine is positioned in the box body 5, wherein the box body comprises a frame and a cover member 13, the covering member 13 and the engine 5 to form the gap between the auxiliary air duct, said auxiliary air duct is arranged in the air inlet of the cover member 13 ; I set up the cooling air duct of the engine   10 and cooling air duct II   11, the cooling air duct I   10 is located in the engine 5 cylinder head, said cooling air duct II   11 is located in the engine 5 crankshaft the bottom of the box body and crankcase cover; crank box and to the crankcase cover of the crankcase part of the engine, which belongs to the prior art, does not repeat in this structure; engine is used as a power source of the generator, usually adopting a direct is connected with the drive and integrated in the structure of the same box body, which belongs to the existing portable generator, portable power generating equipment of conventional structure, in this do not repeat; the invention adopts the cooling air duct I 10 and the cooling air duct II   11 two cooling air duct of the engine cooling, to the engine to form a comprehensive cooling, and in the case of omni-directional away the heat generated by the engine, avoiding heat accumulation and heat insulating treatment is not required, thereby simplifying the volume of the whole equipment, and better cooling effect; at the same time, the auxiliary cooling channels for auxiliary cooling, not only increases the air output, also auxiliary cooling periphery of the engine, thus greatly reducing the accumulation of the heat in the box body, a heat insulation layer arranged is not required; Figure 1, Figure 2 in the direction indicated by the arrow and admirable direction for cooling.

As shown, the engine is used in generator structure is as follows: generator comprises a frequency converter arranged in sequence 1, cooling fan 2, the main body of the generator 4 and the engine 5, I the cooling air duct   10 and II the cooling air duct   11 by the cooling air to the cooling fan 2 forced forming; forming a forced air cooling for cooling, the cooling effect is increased and; as shown, passes through the frequency converter 1, the cooling fan 2, the main body of the generator 4 and the engine 5 and form the cooling air duct, and the branch forming the cooling duct I   10 and the cooling air duct II   11 ; through a whole and the cooling air duct of the forced cooling and admirable, the cooling of the entire equipment is completed, the structure further is simple and compact; reducing the overall temperature of the heating part, prolong the service life of the engine, reduce emissions, improve the service life of the electrical generator, improve the reliability of the whole machine.

In this embodiment, the auxiliary air duct to the air inlet of the two are respectively arranged at the two transverse sides of the box body of the covering element 13, also the auxiliary air duct of the air inlet so as to correspond to the two transverse sides of the generator by two, transverse means and the engine 5 and the motor main body 4 are arranged between the horizontal and vertical direction of the direction; of course, can be between the two auxiliary air duct and form is not formed, the auxiliary air duct shown 14 and the auxiliary air duct 15 ; increase the air volume and omnidirectional realize auxiliary cooling, the elimination of cooling dead angle, in the case of the accumulation of heat is avoided.

In this embodiment, I the cooling air duct   10 and II the cooling air duct   11 by the cooling fan of the generator cooling air to the main body 4 is formed a branch after cooling; with a cooling fan 2 to realize the cooling of the two air passages, save installation space machine driving energy, so that the structure is more compact.

In this embodiment, the auxiliary cooling air passage (auxiliary air duct 14 and the auxiliary air duct 15) is positioned in the cooling air duct I   10 and the cooling air duct II   11 I with the air inlet end of the cooling air duct   10 and the cooling air duct II   11 collection, collection can be respectively pooled or all together after being connected; the auxiliary cooling air channel for cooling air is forced by the cooling fan is formed, in the existing cooling fan on the basis of the increase of the cooling air volume, to improve cooling efficiency, and the compact structure of the whole equipment.

In this embodiment, the cooling air duct I   10 and II the cooling air duct   11 to the outlet of the muffler of the engine 8 to the muffler 8 is discharged after cooling; utilizing the same cooling air the muffler 8 around the cooling and carry away the heat of the muffler, to prevent the heat accumulation, the heat-insulating layer is arranged on the silencer is removed, further reduce the volume and the structure is simplified.

In this embodiment, the cooling air duct I   10 consists of an upper dome 9 and the engine 5 is formed between the cylinder head, cooling air duct II 11 of a lower dome 6 and the engine 5 is formed between the bottom of the; cooling air duct of forming a relatively airtight, targeted for cooling, to improve cooling efficiency.

In this embodiment, the cooling air duct I   10 and II the cooling air duct   11 through the outlet of a muffler housing is collected in the engine muffler; further forming comparatively sealed cooling and admirable space, is beneficial for making full take heat away, to improve cooling efficiency.

In this embodiment, the upper guide cover 9 and the lower dome 6 is connected between the and the muffler housing.

This invention is used in the generator, the following optimization can also be carried out: the cooling fan 2 is fixed to the fan shroud 2 in, the fan shroud 2 and the generator main body 4 housing a I is communicated with the cooling air channel   10 and the cooling air duct II 11 of the cooling air duct of the generator is connected, through the forced to be more fully the flow of cooling air and cooling, the integral structure of the equipment is further simplified, the cooling air duct with the more closely the parts, does not need to be disposed of their respective cooling air duct, reduces cooling air loss in the flow, to improve cooling efficiency; said cooling duct including a cooling fan 2 of the intake passage, the intake passage after passing through the frequency converter 1 ; the use of cooling wind to the frequency converter 1 for cooling, thorough and comprehensive, cooling effect is ensured; the cooling fan 2 is arranged in the fan case 3 in, the fan cover 3 and the generator main body 4 housing a I is communicated with the cooling air channel   10 and the cooling air duct II   11 of the generator body is connected with 4 the cooling air duct; air intake through the air inlet channel of the control panel of the generator 12 and the frequency converter 1 between, the part on the panel with a certain cooling effect, the cooling air does not need to be separately arranged; with a control panel of the generator, power generation and other parameters used for controlling, which belongs to the conventional technology, in this do not repeat.

Finally note that, the above-mentioned embodiment in order to illustrate the technical scheme of the invention and non-limiting, although with reference to the preferred embodiments of a detailed explanation of the invention, the ordinary technical personnel in this field should be understood, the technical scheme of this invention for equivalent modification or replacement, and can not be separated from the technical scheme of the invention the purpose and scope of, its should be covered in this invention, the scope of the claim.