CN220378479U - Compressor and refrigeration equipment - Google Patents

Abstract

The utility model discloses a compressor, comprising: the shell comprises a top cover, a main shell and a bottom cover which are sequentially connected, wherein the main shell is integrally formed and is divided into a high-pressure cavity and a liquid storage cavity; the cylinder is arranged in the high-pressure cavity; the air inlet pipe assembly is arranged outside the shell and communicated with the liquid storage cavity; and the oil return and air return structure is positioned in the shell and is used for communicating the liquid storage cavity with the high-pressure cavity. According to the technical scheme, the cylinder is accommodated by the integrally formed main shell, the high-pressure cavity and the liquid storage cavity are respectively formed in the main shell, and the liquid storage cavity stores the refrigerant led in through the air inlet pipe assembly, so that the liquid storage device and the main body share one shell in essence, the welding installation of the liquid storage device is avoided, and the risk of leakage of the main body or the liquid storage device is reduced. A refrigeration apparatus including a compressor is also disclosed.

Description

Compressor and refrigeration equipment

Technical Field

The utility model relates to the field of compressors, in particular to a compressor and refrigeration equipment.

Background

A compressor (compressor) is a driven fluid machine that lifts low-pressure gas to high-pressure gas, and is the heart of a refrigeration system. The refrigerating cycle is characterized in that low-temperature low-pressure refrigerant gas is sucked, a motor is operated to drive a piston to compress the refrigerant gas, and then high-temperature high-pressure refrigerant gas is discharged, so that power is provided for the refrigerating cycle, and the refrigerating cycle is realized from compression to condensation (heat release), expansion and finally evaporation (heat absorption).

The compressor comprises a main body and a liquid storage device, wherein the liquid storage device is generally arranged on the side surface of the main body or on the lower portion of the main body, the liquid storage device stores low-pressure refrigerant passing through the evaporator, and then the liquid storage device can introduce the low-pressure refrigerant into the main body to be pressurized to form high-pressure refrigerant so that the refrigerant can conveniently enter the condenser to release heat.

Currently, with the trend of miniaturization of compressors, the accumulator is generally disposed at the lower portion of the main body, i.e., the housing of the accumulator is welded to the housing of the main body, but the welding may cause the thickness of the welded portion of the main body or the housing of the accumulator to be reduced, thereby increasing the risk of leakage of the main body or the accumulator.

Disclosure of Invention

The main purpose of the present utility model is to propose a compressor, which aims to share a casing with a main body, so as to avoid welding between the liquid reservoir and the main body.

In order to achieve the above object, the present utility model provides a compressor comprising:

the shell comprises a top cover, a main shell and a bottom cover which are sequentially connected, wherein the main shell is integrally formed and is divided into a high-pressure cavity and a liquid storage cavity;

the cylinder is arranged in the high-pressure cavity;

the air inlet pipe assembly is arranged outside the shell and communicated with the liquid storage cavity;

and the oil return and air return structure is used for communicating the liquid storage cavity with the high-pressure cavity.

Alternatively/in an embodiment, the return oil and return air structure is located within the housing.

Alternatively/in an embodiment, the compressor has and only has one set of intake pipe assemblies.

Alternatively/in an embodiment, the air intake pipe assembly includes an air intake pipe and at least one fixing member provided on an outer wall of the main housing for fixing the air intake pipe, one end of the air intake pipe communicating with the liquid storage chamber.

Alternatively/in an embodiment, the end of the air inlet pipe extends into the liquid storage cavity, and a filter is arranged on the end of the air inlet pipe extending into the liquid storage cavity.

Alternatively/in an embodiment, the top cover is welded to the main housing.

Alternatively/in an embodiment, the bottom cover is welded to the main housing.

Optionally/in an embodiment, the engine further comprises a lower bearing, wherein an air return channel penetrates through the lower bearing up and down, and the oil return air return structure is communicated with the air cylinder through the air return channel.

Alternatively/in an embodiment, a sealing ring is provided on the outer periphery of the lower bearing, the sealing ring abutting the main housing.

Alternatively/in an embodiment, the oil return air return structure includes an oil return pipe, an upper end of the oil return pipe passes through the air return channel and is communicated with the cylinder, and a lower end of the oil return pipe is communicated with the liquid storage cavity.

Alternatively/in an embodiment, the level of the lower end of the return pipe is lower than the level of the filter.

Alternatively/in an embodiment, a distance between a lower end of the oil return pipe and the bottom cover is not more than 10mm.

Alternatively/in an embodiment, the lower end of the oil return pipe extends to the bottom cover.

Alternatively/in an embodiment, the lower bearing is provided with an oil cover for storing cooling oil on one side of the reservoir.

Optionally/in an embodiment, a heat shield is further disposed on a side of the lower bearing located on the liquid storage cavity, and the heat shield is used for isolating the oil cover and the refrigerant.

Optionally/in an embodiment, the heat shield and the oil cover are both provided with a avoiding port for yielding to the return air channel.

Optionally/in an embodiment, the air conditioner further includes a motor, wherein the motor is disposed in the high-pressure cavity, and the motor drives the air cylinder to pressurize the refrigerant.

The utility model also provides refrigeration equipment comprising the compressor

According to the technical scheme, the cylinder is accommodated by utilizing the integrally formed main shell, the high-pressure cavity and the liquid storage cavity are respectively formed in the main shell, and the liquid storage cavity stores the refrigerant led in through the air inlet pipe assembly, so that the liquid storage device and the main body share one shell in essence, the welding installation of the liquid storage device is avoided, and the risk of leakage of the main body or the liquid storage device is reduced; in addition, the liquid storage device and the main body share one shell, and the air return and oil return structure is additionally arranged in the utility model to be communicated with the liquid storage cavity and the high-pressure cavity, so that the refrigerant in the liquid storage cavity can normally enter the cylinder, and the normal operation of the whole structure is further ensured.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic cross-sectional view of the overall structure of the compressor of the present utility model;

FIG. 2 is a partial schematic view of the top cover of the present utility model;

FIG. 3 is a partial schematic view of the bottom cover of the present utility model;

FIG. 4 is an enlarged view of a portion of FIG. 1 at A;

fig. 5 is a partial enlarged view at B in fig. 1.

Reference numerals illustrate:

the achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that, if directional indications (such as up, down, left, right, front, and rear … …) are included in the embodiments of the present utility model, the directional indications are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.

In addition, if there is a description of "first", "second", etc. in the embodiments of the present utility model, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, if the meaning of "and/or" is presented throughout this document, it is intended to include three schemes in parallel, taking "a and/or B" as an example, including a scheme, or B scheme, or a scheme where a and B meet simultaneously. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.

The compressor is an important component part of air conditioner, refrigerator and other equipment, and is used in refrigerating pipeline to pressurize refrigerant for heat dissipation. Specifically, the low-pressure refrigerant passing through the evaporator enters the compressor, the compressor works to pressurize the refrigerant to form a high-pressure refrigerant, and the high-pressure refrigerant enters the condenser to dissipate heat, so that heat exchange is completed.

Currently, compressors generally include a main body and a reservoir, which is generally disposed at a side surface of the main body or at a bottom of the main body. The accumulator stores low pressure refrigerant from the evaporator. The liquid storage device is provided with an air suction pipe communicated with the main body, low-pressure refrigerant enters the main body through the air suction pipe, and a compression mechanism in the main body pressurizes the low-pressure refrigerant, so that the low-pressure refrigerant is converted into high-pressure refrigerant and enters the condenser. Accordingly, the liquid storage device is fixed on the side surface or the bottom of the main body, and the liquid storage device and the main body are respectively provided with two sets of shells, so that the cooling engine oil and the cooling medium in the main body are prevented from being excessively mixed, and the normal operation of the mechanical structure in the main body and the normal operation of the refrigerating pipeline are further ensured.

The main part includes casing and compression mechanism, and compression mechanism's main part includes cylinder and lower bearing, and cylinder and lower bearing are all installed in the casing, and the cylinder is used for compressing the refrigerant, and lower bearing then provides support and fixed for the cylinder to guarantee the normal operating of cylinder in the main part. Along with the development of miniaturization of household appliances, the volume of the compressor is gradually reduced, and the mode that the liquid storage device is arranged at the bottom of the main body to reduce the whole volume of the compressor is more universal at present. However, when the liquid reservoir is arranged at the bottom of the main body, the liquid reservoir is generally fixed at the bottom of the main body in a welding manner, and welding is easy to have poor welding, namely uneven wall thickness of the bottom of the main body or the liquid reservoir at a welding position can be caused, so that leakage is easy to occur; in addition, the fixing manner of welding may have a problem of coaxiality, that is, the axis of the liquid reservoir is not coincident with the axis of the main body during welding, so that the liquid reservoir is not aligned with the main body, and a series of problems such as difficult installation and the like are caused.

Referring to fig. 1, in order to ensure normal operation of a main body and a reservoir while completing miniaturization of a compressor and reduce the possibility of occurrence of problems such as poor welding of the main body and the reservoir, the present utility model proposes a compressor comprising a housing 100, a cylinder 200, an intake pipe assembly 300, and an oil return and air return structure 500; in the present utility model, the casing 100 includes a top cover 110, a main casing 120 and a bottom cover 130 sequentially connected, wherein the main casing 120 is integrally formed, the main casing 120 is divided into a high pressure chamber 140 and a liquid storage chamber 150, the cylinder 200 is disposed in the high pressure chamber 140, the liquid storage chamber 150 stores a low pressure refrigerant entering the casing 100 through the air inlet pipe assembly 300, the oil return and air return structure 500 introduces the low pressure refrigerant into the cylinder 200, and the cylinder 200 pressurizes the low pressure refrigerant, thereby completing the working process of the compressor; it should be noted that, after the main housing 120 is integrally formed, that is, the original liquid storage is replaced by the liquid storage cavity 150, and the original liquid storage can directly guide the low-pressure refrigerant into the cylinder 200, so that the oil return and air return structure 500 is required to guide the refrigerant in the liquid storage cavity 150 into the cylinder 200; according to the utility model, the main body and the liquid reservoir share the same shell 100, so that the original welding and mounting steps of the liquid reservoir are canceled while the overall miniaturization of the compressor is completed, the occurrence of poor welding is avoided, and the coaxiality between the liquid reservoir and the main body is ensured.

Referring to fig. 2 and 3, in particular, to facilitate the installation of components such as the cylinder 200 disposed in the housing 100, the top cover 110 and the bottom cover 130 are welded to the housing 100; for example, the main body further includes a motor 700 for powering the air cylinder 200, when the top cover 110 and the bottom cover 130 are not welded, the motor 700 can be installed by using the opening of the top cover 110 on the main housing 120, and the air cylinder 200 and other parts can be installed by using the opening of the bottom cover 130 of the main housing 120, and after the installation of the parts is completed, the top cover 110 and the bottom cover 130 are welded; the welding arrangement of the top cover 110 and the bottom cover 130 ensures the normal installation of the parts located in the main housing 120 while completing the integration of the main housing 120, thereby enabling the miniaturization of the compressor without affecting the original functions of the compressor.

Referring to fig. 4 and 5, in the present embodiment, the compressor further includes a lower bearing 400, the lower bearing 400 is installed in the main housing 120, and the lower bearing 400 is installed on one end of the cylinder 200 near the liquid storage chamber 150, the lower bearing 400 provides a supporting and fixing effect for the cylinder 200, and the lower bearing 400 is vertically penetrated with an air return channel 410, an oil return air return structure 500 is provided in the housing 100, and the oil return air return structure 500 is connected to the cylinder 200 through the air return channel 410, thereby introducing a refrigerant into the cylinder 200. Specifically, the sealing ring 430 is disposed on the lower bearing 400, and the sealing ring 430 abuts against the main housing 120, so that the pressurized refrigerant entering the high-pressure chamber 140 is not easy to leak into the liquid storage chamber 150, and the pressurizing effect of the cylinder 200 is ensured; the oil return and air return structure 500 includes an oil return pipe 510, wherein the upper end of the oil return pipe 510 passes through the air return channel 410 and is communicated with the cylinder 200, so that the oil return pipe 510 can reintroduce the cooling engine oil entering the liquid storage cavity 150 through the whole refrigeration cycle pipeline into the cylinder 200, thereby guaranteeing the lubrication effect of the cooling engine oil on the parts such as the cylinder 200; accordingly, the lower end of the oil return pipe 510 is communicated with the liquid storage chamber 150, and the lower end of the oil return pipe 510 extends to the bottom cover 130; in the present embodiment, the outer pipe wall of the lower end of the oil return pipe 510 collides with the bottom cover 130, i.e., a portion of the lower end of the oil return pipe 510 is directly placed on the bottom cover 130, so that the oil return pipe 510 can suck the cooling oil deposited on the bottom cover 130; the lower end of the oil return pipe 510 may also have a gap with the bottom cover 130, i.e., the end of the lower end of the oil return pipe 510 is spaced apart from the bottom cover 130 by a certain distance, but in order to ensure the oil suction effect of the oil return pipe 510 on the oil deposited on the bottom cover 130, the distance between the lower end of the oil return pipe 510 and the bottom cover 130 may not be excessively large, for example, not more than 10mm, so as to ensure the oil suction effect of the oil return pipe 510; the low-pressure refrigerant can directly enter the cylinder 200 through the air return channel 410 to complete pressurization.

Referring to fig. 1, in particular, the compressor of the present utility model further includes a motor 700, the motor 700 is fixed in the high-pressure chamber 140, and the motor 700 drives the cylinder 200 to operate, and the movement of the parts such as the cylinder 200 requires cooling oil for lubrication and cooling; when the cylinder 200 is operated, a pressure difference is generated at an air inlet of the cylinder 200, and the air inlet is communicated with the air return channel 410, so that the movement of the cylinder 200 sucks the low-pressure refrigerant and the cooling engine oil of the bottom cover 130 into the air return channel; accordingly, in another embodiment of the present utility model, the oil return and air return structure 500 further includes an air return pipe, the oil return pipe 510 and the air return pipe are all communicated with the liquid storage cavity 150, and the difference is that the end of the oil return pipe 510 is closer to the bottom cover 130 than the air return pipe, so as to separate and suck the engine oil and the refrigerant, so as to ensure lubrication of the whole structure by the cooling engine oil and normal pressurization process of the low-pressure refrigerant.

Referring to fig. 1 and 4, it should be noted that, the cooling oil entering the cylinder 200 for lubrication is partially gasified into droplets, so that the cooling oil enters the refrigeration cycle pipeline connected to the compressor according to the present utility model along with the pressurized refrigerant, and enters the liquid storage chamber 150 along with the circulation of the refrigerant, and the oil return pipe 510 described above re-sucks the portion of cooling oil into the cylinder 200; the cooling oil lubricates the structures such as the cylinder 200 and most of the cooling oil will flow back, therefore, the compressor provided by the utility model further comprises an oil cover 440 for containing the cooling oil, the oil cover 440 is arranged on one side of the lower bearing 400 located in the liquid storage cavity 150, so that the cooling oil will flow back to the oil cover 440 under the action of gravity; accordingly, in order to ensure the normal backflow of the cooling oil, an oil return hole 420 for returning the oil is formed in the lower bearing 400, and the oil flowing downwards will enter into the oil cover 440 through the oil return hole 420; in order to pump cooling oil into the structures such as the motor 700 and the cylinder 200, the compressor provided by the utility model further comprises an oil feeding structure 600, wherein one end of the oil feeding structure 600 passes through the lower bearing 400 and stretches into the oil cover 440 to pump the oil; the other end of the oiling mechanism 600 is connected with the motor 700, so that the motor 700 drives the oiling mechanism 600; the oiling structure 600 pumps the cooling oil in the oil cover 440 into the motor 700 and the cylinder 200, so that the cooling oil can lubricate and cool each part, and the normal operation of the whole structure is ensured.

Referring to fig. 1 and 4, in the present embodiment, the oil cover 440 may share screws with the lower bearing 400, that is, the oil cover 440 is fixed on the end of the lower bearing 400 by using the existing screws of the lower bearing 400, thereby reducing the number of holes on the lower bearing 400 and guaranteeing the overall structural strength of the lower bearing 400.

It should be noted that, the oil storage cavity for containing the cooling oil may be disposed on the lower bearing 400, the end portion of the oil loading structure 600 may extend into the oil storage cavity to also complete the extraction of the cooling oil, and the specific setting of the oil cover 440 or the oil storage cavity may be changed according to the actual use and the design requirement, which is not described in detail in this embodiment.

Referring to fig. 1 and 4, accordingly, after the oil cover 440 is provided, the cooling oil flowing back is contained in the oil cover 440, and the cooling oil flows back into the oil cover 440 through the oil return hole 420 on the lower bearing 400, i.e., the oil cover 440 is communicated with the high pressure chamber 140; when the oil cover 440 is not filled with the cooling oil, the pressure in the oil cover 440 is approximately equal to the pressure in the high-pressure chamber 140; the oil cover 440 is disposed on one side of the lower bearing 400 where the liquid storage chamber 150 is located, i.e., the liquid storage chamber 150 is located outside the oil cover 440, so the oil cover 440 needs to have a certain structural strength to resist the pressure difference between the high pressure chamber 140 and the liquid storage chamber 150; therefore, the material of the oil cover 440 can be selected according to the practical application environment of the compressor, the specific shape of the oil cover 440 can be set and improved to enhance the specific structural strength of the oil cover 440, and a sealing member or the like can be added to improve the tightness between the oil cover 440 and the lower bearing 400, so as to ensure that the oil cover 440 can isolate the high-pressure chamber 140 from the liquid storage chamber 150, thereby ensuring the pressurizing effect of the air cylinder 200 on the refrigerant and further ensuring the refrigerating effect of the refrigerating cycle pipeline of the compressor provided by the utility model.

Referring to fig. 1 and 4, it should be noted that the refrigerant in the liquid storage chamber 150 belongs to a low-pressure refrigerant and belongs to a gas state, the refrigerant pressurized by the cylinder 200 belongs to a high-pressure refrigerant, and belongs to a gas state, but the temperature of the refrigerant is increased after being pressurized, so that the temperature of the low-pressure refrigerant and the temperature of the high-pressure refrigerant have a large difference, the oil cover 440 separates the liquid storage chamber 150 from the high-pressure chamber 140, and therefore the temperature of the high-pressure refrigerant may be transferred to the low-pressure refrigerant by the oil cover 440, so that the temperature of the low-pressure refrigerant is too high, and the compression effect of the cylinder 200 on the low-pressure refrigerant is reduced. Therefore, in the present utility model, the heat shield 450 is further disposed on one side of the liquid storage chamber 150 of the lower bearing 400, and the heat shield 450 is covered on the oil cover 440 to isolate the low-pressure refrigerant from direct contact with the oil cover 440, so as to reduce the possibility of heat conduction between the high-pressure refrigerant in the high-pressure chamber 140 and the low-pressure refrigerant in the liquid storage chamber 150 through the oil cover 440, and further ensure the compression effect of the cylinder 200 on the low-pressure refrigerant; in addition, the heat shield 450 and the oil cover 440 are respectively provided with an avoiding opening for avoiding the return air channel, so that the low-pressure refrigerant can be ensured to normally enter the cylinder.

Referring to fig. 1, in particular, the intake pipe assembly 300 in the present embodiment includes an intake pipe 310 and at least one fixing member 320 for fixing the intake pipe 310; the air inlet pipe 310 is used for communicating the liquid storage cavity 150 with the refrigeration cycle pipeline, so that the low-pressure refrigerant passing through the evaporator can enter the compressor; correspondingly, one end of the air inlet pipe 310 extends into the liquid storage cavity 150 to directly introduce the low-pressure refrigerant into the liquid storage cavity 150; it should be noted that, the end portion of the air inlet pipe 310 extending into the liquid storage cavity 150 is provided with a filter 330, and the filter 330 filters out impurities possibly contained in the refrigerant; in addition, the lower end of the oil return pipe 510 is set to a level lower than that of the filter 330 to ensure the normal extraction of the cooling oil by the oil return pipe 510; in this embodiment, the fixing member 320 may be a fixing plate, which is fixed on the outer wall of the main housing 120, and may be coated with a metal material outside the air inlet pipe 310, so that the air inlet pipe 310 may be welded on the fixing plate; the fixing piece 320 may be a fixing belt, and the fixing cover binds the air inlet pipe 310 on the main casing 120; the fixing member 320 may be a fixing ring, the outer circumference of which is fixed on the main housing 120, and the air inlet pipe 310 passes through the fixing ring, so that the fixing ring will collide with the outer pipe wall of the air inlet pipe 310, thereby completing the fixing of the air inlet pipe 310; the fixing member 320 is only illustrated in this embodiment, and the fixing member 320 may be specifically set according to actual design requirements, so as to meet the fixing requirement of the air inlet pipe 310.

The air inlet pipe 310 introduces the low-pressure refrigerant into the liquid storage cavity 150, and the low-pressure refrigerant needs to pass through the air inlet pipe 310 and other pipes before entering the liquid storage cavity 150, so that the low-pressure refrigerant may exchange heat with the outside, and therefore, the air inlet pipe 310 may be wrapped with a heat insulation material such as sponge, thereby reducing the possibility of heat exchange between the air inlet pipe 310 and the outside, and further reducing the possibility of overhigh temperature of the low-pressure refrigerant when entering the liquid storage cavity 150.

In the assembly process of the utility model, the motor 700, the cylinder 200, the lower bearing 400 and other components are firstly arranged in the main shell 120, the motor 700 and other components can be fixed in the main shell 120 in a welding mode and the like, then the top cover 110 and the bottom cover 130 are welded on two ends of the main shell 120 according to the installation direction of the components in the main shell 120, after the welding is finished, the main shell 120, the top cover 110 and the oil cover 440 form the high-pressure cavity 140, and the main shell 120, the bottom cover 130 and the oil cover 440 form the liquid storage cavity 150, thereby completing the division of the high-pressure cavity 140 and the low-pressure cavity in the main shell 120.

Referring to fig. 1, the motor 700 of the present utility model includes a stator 710 and a rotor 720, wherein the stator 710 is fixed in the main housing 120, the rotor 720 rotates at the inner ring of the stator 710, and when the rotor 720 rotates, the cylinder 200 and the oil applying structure 600 are driven, thereby completing the extraction of cooling oil and the compression of refrigerant in the compressor.

The utility model also provides a refrigeration device, the specific structure of the compressor refers to the embodiment, and as the refrigeration device adopts all the technical schemes of all the embodiments, the refrigeration device at least has all the beneficial effects brought by the technical schemes of the embodiments, and the description is omitted.

The foregoing description is only of the optional embodiments of the present utility model, and is not intended to limit the scope of the utility model, and all the equivalent structural changes made by the description of the present utility model and the accompanying drawings or the direct/indirect application in other related technical fields are included in the scope of the utility model.

Claims (18)

1. A compressor, comprising:

the shell comprises a top cover, a main shell and a bottom cover which are sequentially connected, wherein the main shell is integrally formed and is divided into a high-pressure cavity and a liquid storage cavity;

the cylinder is arranged in the high-pressure cavity;

the air inlet pipe assembly is arranged outside the shell and communicated with the liquid storage cavity;

and the oil return and air return structure is used for communicating the liquid storage cavity with the high-pressure cavity.

2. The compressor of claim 1, wherein the oil return air return structure is located within the housing.

3. The compressor of claim 1, wherein the compressor has and has only one set of intake pipe assemblies.

4. A compressor according to claim 3, wherein the intake pipe assembly includes an intake pipe and at least one fixing member provided on an outer wall of the main housing for fixing the intake pipe, one end of the intake pipe communicating with the liquid storage chamber.

5. The compressor of claim 4, wherein the end of the intake pipe extends into the reservoir and a filter is provided on the end of the intake pipe extending into the reservoir.

6. The compressor of claim 1, wherein the top cover is welded to the main housing.

7. The compressor of claim 1, wherein the bottom cover is welded to the main housing.

8. The compressor of claim 1, further comprising a lower bearing having a return air passage extending therethrough from above and below, said return air return structure communicating with said cylinder through said return air passage.

9. The compressor of claim 8, wherein a seal ring is provided on an outer periphery of the lower bearing, the seal ring being in abutment with the main housing.

10. The compressor of claim 8, wherein the return oil return air structure includes an oil return pipe, an upper end of the oil return pipe passes through the return air passage and communicates with the cylinder, and a lower end of the oil return pipe communicates with the liquid storage chamber.

11. The compressor of claim 10, wherein the intake pipe assembly includes an intake pipe and at least one fixing member provided on an outer wall of the main housing for fixing the intake pipe, one end of the intake pipe communicates with the liquid storage chamber, an end of the intake pipe extends into the liquid storage chamber, a filter is provided on an end of the intake pipe extending into the liquid storage chamber, and a level of a lower end of the oil return pipe is lower than a level of the filter.

12. The compressor of claim 11, wherein a distance between a lower end of the oil return pipe and the bottom cover is not more than 10mm.

13. The compressor of claim 10, wherein a lower end of the oil return pipe extends to the bottom cover.

14. The compressor of claim 8, wherein an oil cover for storing cooling oil is provided at one side of the lower bearing at the liquid storage chamber.

15. The compressor of claim 14, wherein the lower bearing is further provided with a heat shield at one side of the liquid storage chamber, the heat shield for isolating the oil cover from the refrigerant.

16. The compressor of claim 15, wherein the heat shield and the oil cover are each provided with a relief port for yielding to a return air passage.

17. The compressor of claim 8, further comprising a motor disposed within the high pressure chamber, the motor driving the cylinder to pressurize the refrigerant.

18. A refrigeration device comprising a compressor as claimed in any one of claims 1 to 17.