Compressor shell, compressor and refrigeration device

Abstract

The application provides a compressor shell, a compressor and a refrigeration device, and relates to the technical field of compressors, and solves the technical problem of poor compressor performance caused by the compressor shell in the prior art. The compressor shell comprises an upper shell for accommodating a motor assembly and a lower shell for accommodating a pump body assembly, a through hole allowing a long shaft of a crankshaft to pass through is arranged at the bottom of the upper shell and the top of the lower shell, a bearing is arranged between the upper shell and the lower shell, the bearing is coaxially arranged with the long shaft of the crankshaft, and the upper shell and the lower shell can be sealingly connected. The application solves the problem of large rotor swing of the crankshaft, reduces the problems of large vibration and large electromagnetic noise of the compressor, changes the sliding friction of the thrust surface of the crankshaft into rolling friction, reduces the power consumption of the compressor, reduces the noise of the compressor, and improves the performance of the compressor.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of compressor, in particular to a compressor housing, a compressor and a refrigeration equipment. BACKGROUND

[0002] The compressor is a driven fluid machine for lifting low-pressure gas to high-pressure gas, and is the heart of the refrigeration system. The compressor sucks low-temperature and low-pressure refrigerant gas from the suction pipe, and uses the motor to drive the piston to compress the low-temperature and low-pressure refrigerant gas, and then discharges high-temperature and high-pressure refrigerant gas to the exhaust pipe, thereby providing power for the refrigerant circulation.

[0003] The applicant finds that the prior art at least has the following technical problems: Figure 1 The compressor structure schematic diagram in the prior art is shown, the compressor housing in the prior art includes a housing 10 with openings at the top and bottom, and a top cover 11 and a bottom cover 12 respectively closing the top and bottom of the housing. A motor assembly 13 and a pump body assembly 14 are arranged in the housing along the axial direction of the housing 10 from the top cover 11 to the bottom cover 12. The compressor housing is thus arranged, impurities are easily sucked in through the suction pipe of the pump body assembly, the pump body assembly is easy to stick to metal objects such as iron wire, and impurities are easy to rise with the oil-gas mixture of the refrigerant to cause serious safety hazards to the motor, especially the terminal post on the top cover 11. At the same time, the crankshaft arranged in the existing compressor housing is easy to produce deflection due to its long long axis, and swing during rotation of the crankshaft, thereby generating electromagnetic noise. In addition, the current compressor housing makes the lower thrust surface of the crankshaft directly contact with the lower flange, and rotates through sliding friction, so the lower thrust surface needs to bear the weight of the crankshaft and the rotor in the sliding friction, causing large power consumption of the compressor and generating noise. SUMMARY

[0004] The present application aims to provide a compressor housing, a compressor and a refrigeration equipment to solve the technical problem of poor performance of the compressor caused by the compressor housing in the prior art. The preferred technical solutions in the technical solutions provided by the present application can produce the technical effects as described below.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solutions:

[0006] The compressor housing provided by the present application comprises an upper housing for accommodating a motor assembly and a lower housing for accommodating a pump body assembly, wherein a through hole allowing the long axis of a crankshaft to pass through is arranged at the bottom of the upper housing and the top of the lower housing, a bearing is arranged between the upper housing and the lower housing, the bearing is coaxially arranged with the long axis of the crankshaft, and the upper housing and the lower housing can be sealingly connected.

[0007] According to a preferred embodiment, the bearing is connected to the long shaft of the crankshaft by interference fit.

[0008] According to a preferred embodiment, a bearing sleeve is sleeved outside the bearing, and the bearing sleeve is capable of being sealingly connected to the bottom of the upper shell and the top of the lower shell.

[0009] According to a preferred embodiment, a compressor exhaust pipe is arranged above the upper shell, and a plurality of refrigerant channels are arranged on the bearing sleeve and in the axial direction of the bearing sleeve, so that the refrigerant enters the upper shell from the lower shell through the plurality of refrigerant channels and is discharged by the compressor exhaust pipe.

[0010] According to a preferred embodiment, the plurality of refrigerant channels are uniformly distributed around the circumference of the bearing sleeve.

[0011] According to a preferred embodiment, a filter device is arranged in the plurality of refrigerant channels, and the filter device is arranged in the refrigerant channel with its surface perpendicular to the direction of refrigerant flow.

[0012] According to a preferred embodiment, a compressor exhaust pipe is arranged on the side wall of the lower shell, so that the refrigerant is discharged by the compressor exhaust pipe on the lower shell after being compressed by the pump body assembly.

[0013] The present application also provides a compressor comprising the compressor shell.

[0014] According to a preferred embodiment, the compressor further comprises a motor assembly and a pump body assembly, wherein the motor assembly is arranged in the upper shell of the compressor shell, the pump body assembly is arranged in the lower shell of the compressor shell, and the long shaft of the crankshaft of the pump body assembly extends into the upper shell through the through hole of the lower shell and the upper shell in sequence.

[0015] The present application also provides a refrigeration device comprising the compressor.

[0016] According to a preferred embodiment, the refrigeration device is an air conditioner.

[0017] Based on the above technical solutions, the compressor shell of the present application embodiment has at least the following technical effects:

[0018] The compressor shell provided by the application is divided into an upper shell and a lower shell, a bearing is arranged between the upper shell and the lower shell, and the long shaft of the crankshaft is coaxially connected through the upper shell and the lower shell, and the upper shell and the lower shell are in sealed connection, so that the deflection of the crankshaft is reduced, the problem of large swing of the crankshaft rotor is solved, the problems of large vibration and large electromagnetic noise of the compressor are reduced, the sliding friction of the thrust surface of the crankshaft is changed into rolling friction, the power consumption of the compressor is further reduced, the mechanical noise of the compressor is reduced, and the noise performance of the compressor is improved.

[0019] In another aspect, the compressor shell of the embodiment of the application is provided with a refrigerant channel in the bearing sleeve, and a filter device is arranged in the refrigerant channel, so that when the compressed gas flows from the lower shell into the upper shell, the oil-gas mixture is separated by the filter device, and the impurities sucked from the air suction pipe of the pump body assembly are filtered by the filter device, thereby preventing the impurities from adhering to the terminal post and causing a safety hazard to the motor and the terminal post. In addition, according to another preferred embodiment of the application, the compressor shell of the embodiment of the application is provided with a compressor exhaust pipe on the side wall of the lower shell, so that the refrigerant compressed by the pump body assembly in the lower shell is directly discharged into the lower shell and discharged through the exhaust pipe on the side wall of the lower shell, so that the oil-gas mixture no longer contacts the motor and the terminal post in the upper shell, thereby avoiding the influence of the impurities on the motor and the terminal post and improving the safety performance of the compressor. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can be obtained by those skilled in the art without any creative effort based on these drawings.

[0021] Figure 1 is a schematic view of a compressor structure in the prior art;

[0022] Figure 2 is a schematic view of a preferred embodiment of the compressor shell of the application;

[0023] Figure 3 is a schematic view of a preferred embodiment of the bearing in the compressor shell of the application;

[0024] Figure 4 is a schematic view of another preferred embodiment of the compressor shell of the application.

[0025] In the figure: 10-housing; 11-top cover; 12-bottom cover; 13-motor assembly; 14-pump body assembly; 15-crankshaft; 21-upper housing; 22-lower housing; 23-bearing; 24-bearing sleeve; 25-refrigerant channel; 26-filter device; 27-compressor exhaust pipe. DETAILED DESCRIPTION

[0026] To make the objectives, technical solutions, and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other implementations obtained by those of ordinary skill in the art without inventive effort are within the scope of protection of the present invention.

[0027] The following is attached with the instruction manual Figures 1 to 4 The technical solution of the present invention is described in detail.

[0028] Example 1

[0029] like Figure 2 As shown, Figure 2 A schematic structural diagram of a preferred embodiment of a compressor housing according to the present invention is shown. The compressor housing provided in this embodiment includes an upper housing 21 for accommodating a motor assembly 13 and a lower housing 22 for accommodating a pump assembly 14. Through holes are provided at the bottom of the upper housing 21 and the top of the lower housing 22, respectively, to allow the long axis of the crankshaft 15 to pass through, so that the long axis of the crankshaft 15 passes through the through holes of the lower housing 22 and the upper housing 21, respectively. Specifically, the stator and rotor of the motor assembly 13 are disposed within the upper housing 21, and the pump assembly 14 is disposed within the lower housing 22. The bottom end of the crankshaft 15 is disposed within the lower housing 22, and the long axis of the crankshaft 15 passes through the top of the lower housing 22 and the bottom of the upper housing 21, forming a connection with the rotor of the motor assembly. Preferably, a bearing 23 is disposed between the upper housing 21 and the lower housing 22. The bearing 23 is coaxial with the crankshaft 15. Preferably, a sealed connection is formed between the upper housing 21 and the lower housing 22. Preferably, the bearing 23 is connected to the long axis of the crankshaft 15 via an interference fit. Therefore, during the operation of the motor, the bearing 23 can bear the weight of the crankshaft 15 and the motor rotor, so that the lower thrust surface of the crankshaft no longer directly contacts the lower flange, thereby converting the sliding friction of the crankshaft thrust surface into rolling friction, reducing unnecessary mechanical friction.

[0030] Preferably, a bearing sleeve 24 is sleeved on the outside of the bearing 23. The bearing sleeve 24 can form a sealed connection with the bottom of the upper shell 21 and the top of the lower shell 22. Preferably, the bearing sleeve 24 is sealed with the bottom of the upper shell 21 and the top of the lower shell 22 by girth welding, thereby achieving an effective seal between the lower shell 22 and the upper shell 21.

[0031] Preferably, in this embodiment, the compressor exhaust pipe 27 is arranged above the upper shell 21. A plurality of refrigerant channels 25 are provided on the bearing sleeve 24 and along the axial direction of the bearing sleeve 24, such as Figure 2 and Figure 3 As shown, the refrigerant enters the upper shell 21 from the lower shell 22 through the multiple refrigerant channels 25 and is discharged from the compressor exhaust pipe 27. Preferably, the multiple refrigerant channels 25 are evenly distributed around the circumference of the bearing sleeve 24, so that the compressed refrigerant can enter the upper shell 21 along the refrigerant channels in the circumference of the bearing sleeve and then be discharged from the compressor exhaust pipe located above the upper shell. Preferably, a filter device 26 is provided in the multiple refrigerant channels 25, such as Figure 3 As shown. Preferably, filter device 26 is positioned within refrigerant passage 25 with its surface perpendicular to the refrigerant flow direction. The provision of filter device 26 not only separates the oil and gas in the refrigerant as it passes through the refrigerant passage, but also filters out impurities carried with the oil and gas, preventing them from posing a safety hazard to the motor and terminal. Preferably, filter device 26 can be a porous filter mesh.

[0032] The compressor housing in this embodiment is provided with an upper housing and a lower housing, so that a sealed connection is formed between the upper housing and the lower housing through a bearing sleeve, and the bearing sleeve is connected to the long axis of the crankshaft through a bearing inside the bearing sleeve, thereby reducing the problem of unbalanced rotation of the crankshaft due to its long length, and reducing the problem of large vibration of the compressor and electromagnetic sound caused by large swing of the crankshaft rotor; at the same time, the provision of the bearing and the bearing sleeve reduces the problems of high power consumption and high noise caused by friction of the crankshaft thrust surface; in addition, the compressor housing of this embodiment also solves the safety hazard caused by impurities sucked into the suction pipe of the pump body to the motor and the terminal, thereby effectively improving the performance of the motor.

[0033] Example 2

[0034] like Figure 4 As shown, Figure 4A structural schematic view of another preferred embodiment of the compressor housing of the present application is shown. The compressor housing provided by this embodiment includes an upper housing 21 for accommodating the motor assembly 13 and a lower housing 22 for accommodating the pump body assembly 14. A through hole is provided in the bottom of the upper housing 21 and the top of the lower housing 22 to allow the long shaft of the crankshaft 15 to pass through, so that the long shaft of the crankshaft 15 is arranged in sequence through the through holes of the lower housing 22 and the upper housing 21. That is, the stator and rotor of the motor assembly 13 are arranged in the upper housing 21, the pump body assembly 14 is arranged in the lower housing 22, the bottom end of the crankshaft 15 is arranged in the lower housing 22, and the long shaft of the crankshaft 15 passes through the upper surface of the lower housing 22 and the lower surface of the upper housing 21 to form a connection with the rotor of the motor assembly. Preferably, a bearing 23 is provided between the upper housing 21 and the lower housing 22. The bearing 23 is coaxially arranged with the crankshaft 15. Preferably, a bearing sleeve 24 is sleeved on the outside of the bearing 23 to seal the connection between the upper housing 21 and the lower housing 22 through the bearing sleeve 24.

[0035] Preferably, the bearing 23 is connected to the long shaft of the crankshaft 15 by interference fit. Thus, during operation of the motor, the bearing 23 can bear the weight of the crankshaft 15 and the motor rotor, so that the lower thrust surface of the crankshaft is no longer in direct contact with the lower flange, thereby changing the sliding friction of the crankshaft thrust surface to rolling friction and reducing unnecessary mechanical friction.

[0036] Unlike embodiment 1, in this embodiment, the compressor exhaust pipe 27 is arranged on the side wall of the lower housing 22, so that the refrigerant compressed by the pump body assembly 14 is discharged from the compressor exhaust pipe 27 located on the lower housing 22. That is, the compressor exhaust pipe 27 is no longer arranged above the upper housing, so that the refrigerant compressed by the pump body assembly can be directly discharged into the lower housing, and then discharged from the exhaust pipe on the side wall of the lower housing. The oil-gas mixture no longer passes through the upper housing, so that impurities in the oil-gas mixture do not pose a safety hazard to the motor and terminal post located on the upper housing, thereby improving the safety performance of the compressor.

[0037] The compressor housing of this embodiment not only solves the problem of rotational imbalance of the crankshaft due to its long length, reduces the problem of large compressor vibration and electromagnetic noise caused by large oscillation of the crankshaft rotor, and solves the problem of high power consumption and high noise caused by friction of the crankshaft thrust surface, but also solves the problem of safety hazards caused by impurities sucked by the suction pipe in the pump body assembly to the motor and terminal post by arranging the refrigerant exhaust pipe on the lower housing, thereby improving the efficiency of the motor.

[0038] Embodiment 3

[0039] The embodiment provides a compressor, which comprises the compressor shell in the embodiment 1 or the embodiment 2. Preferably, the compressor further comprises a motor assembly 13 and a pump body assembly 14, wherein the motor assembly 13 is arranged in the upper shell 21 of the compressor shell, the pump body assembly 14 is arranged in the lower shell 22 of the compressor shell, and the long axis of the crankshaft 15 of the pump body assembly 14 extends into the upper shell 21 through the through hole of the lower shell 22 and the upper shell 21 in sequence.

[0040] Embodiment 4

[0041] The embodiment provides a refrigeration equipment, which comprises the compressor. Preferably, the refrigeration equipment is an air conditioner.

[0042] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A compressor housing, characterized in that: The invention comprises an upper shell (21) for accommodating a motor assembly (13) and a lower shell (22) for accommodating a pump assembly (14), wherein a through hole is provided at the bottom of the upper shell (21) and the top of the lower shell (22) respectively, for allowing the long axis of the crankshaft (15) to pass through, a bearing (23) is provided between the upper shell (21) and the lower shell (22), the bearing (23) is coaxially arranged with the long axis of the crankshaft (15), and a sealed connection can be formed between the upper shell (21) and the lower shell (22); A bearing sleeve (24) is sleeved on the outer side of the bearing (23), and the bearing sleeve (24) can form a sealed connection with the bottom of the upper shell (21) and the top of the lower shell (22) respectively.

2. The compressor housing according to claim 1, wherein The bearing (23) is connected to the long axis of the crankshaft (15) through interference fit.

3. The compressor housing according to any one of claims 1 to 2, characterized in that A compressor exhaust pipe (27) is arranged above the upper shell (21), and a plurality of refrigerant channels (25) are provided on the bearing sleeve (24) and along the axial direction of the bearing sleeve (24), so that the refrigerant enters the upper shell (21) from the lower shell (22) through the plurality of refrigerant channels (25) and is discharged from the compressor exhaust pipe (27).

4. The compressor housing according to claim 3, characterized in that The plurality of refrigerant channels (25) are evenly distributed around the circumference of the bearing sleeve (24).

5. The compressor housing according to claim 4, characterized in that A filter device (26) is provided in the plurality of refrigerant channels (25), and the filter device (26) is arranged in the refrigerant channel (25) in such a manner that its surface is perpendicular to the refrigerant flow direction.

6. The compressor housing according to any one of claims 1 to 2, characterized in that The compressor exhaust pipe (27) is arranged on the side wall of the lower shell (22) so that the refrigerant is discharged from the compressor exhaust pipe (27) located on the lower shell (22) after being compressed by the pump body assembly (14).

7. A compressor, characterized in that: The compressor housing comprises the compressor housing according to any one of claims 1 to 6.

8. The compressor according to claim 7, characterized in that The invention also includes a motor assembly (13) and a pump assembly (14), wherein the motor assembly (13) is arranged in the upper shell (21) of the compressor shell, and the pump assembly (14) is arranged in the lower shell (22) of the compressor shell, and the long axis of the crankshaft (15) of the pump assembly (14) passes through the through holes of the lower shell (22) and the upper shell (21) in sequence and extends into the upper shell (21).

9. A refrigeration device, characterized in that: Including the compressor according to claim 7 or 8.

10. The refrigeration equipment according to claim 9, characterized in that The refrigeration equipment is an air conditioner.

Images