CN111120326A

CN111120326A - Cylinder assembly of compressor and compressor

Info

Publication number: CN111120326A
Application number: CN201811283578.7A
Authority: CN
Inventors: 张洋洋
Original assignee: Guangdong Meizhi Precision Manufacturing Co Ltd
Current assignee: Guangdong Meizhi Precision Manufacturing Co Ltd
Priority date: 2018-10-31
Filing date: 2018-10-31
Publication date: 2020-05-08

Abstract

The invention discloses a cylinder assembly of a compressor and the compressor. The cylinder assembly of the compressor comprises a cylinder body and fins, wherein a cooling cavity and a central hole are arranged in the cylinder body at intervals, and the fins are arranged in the cooling cavity. According to the cylinder component of the compressor, the cooling cavity with the ribs arranged inside is arranged, the cooling medium passing through the cooling cavity can be in contact with the ribs and the wall surface of the cooling cavity and can perform heat exchange, so that the cylinder body can be directly or indirectly cooled, the cooling efficiency of the cooling medium on the cylinder body can be improved, the cylinder body can further cool the refrigerant gas in the central hole, and other structural components in the compressor can be cooled in the process that the refrigerant gas flows through the compressor, so that the temperature of the compressor is suitable for the normal operation of the compressor, the operation reliability of the compressor can be improved, the operation loss of the compressor is reduced, and the working efficiency of the compressor is improved.

Description

Cylinder assembly of compressor and compressor

Technical Field

The invention relates to the field of domestic electric appliances, in particular to a cylinder assembly of a compressor and the compressor.

Background

When a compression pump body of the totally-enclosed rotary compressor compresses refrigerant gas, the pressure and the temperature of the compressed refrigerant can be obviously increased, then the high-temperature and high-pressure refrigerant is discharged into a closed shell of the compressor, and meanwhile, a motor in the shell also generates a large amount of heat loss during operation, so that the internal temperature of the totally-enclosed compressor is up to more than 100 ℃. High temperature on the one hand can heat the low temperature of compressor and inhale, on the other hand also does not benefit to the pump body heat dissipation. This results in overheating of the compressor at low temperature suction, excessive discharge temperature, increased power consumption, reduced efficiency, and also jeopardizes the insulation safety and operational reliability of the internal motor. This causes a reduction in the energy efficiency level and reliability of the compressor.

In the related art, the compressor usually adopts passive heat dissipation of a self-closed casing, but the heat transfer path from inside to outside between the core heat source pump body and the motor is very complicated and has low heat transfer efficiency, and good heat dissipation of internal core components cannot be realized.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. To this end, an object of the present invention is to propose a cylinder assembly of a compressor having a good cooling function.

The invention also provides a compressor with the cylinder assembly.

According to the cylinder assembly of the compressor of the embodiment of the invention, comprising: a cylinder body having a spaced cooling cavity and a central bore therein; the fins are arranged in the cooling cavity.

According to the cylinder assembly of the compressor, the cooling cavity with the ribs is arranged, cooling media passing through the cooling cavity can be in contact with the ribs and the wall surface of the cooling cavity and perform heat exchange, so that the cylinder body can be directly or indirectly cooled, the cooling efficiency of the cooling media on the cylinder body can be improved, the cylinder body can further cool refrigerant gas in the central hole, and other structural components in the compressor can be cooled in the process that the refrigerant gas flows through the compressor, so that the temperature of the compressor is suitable for normal operation of the compressor, the operation reliability of the compressor can be improved, the operation loss of the compressor is reduced, and the working efficiency of the compressor is improved.

According to some embodiments of the invention, the cooling cavity is an arc-shaped chamber, the cooling cavity extends in a circumferential direction of the central bore, and the cooling cavity is spaced apart from the central bore in a radial direction of the central bore.

In some embodiments of the invention, the fins are located on a sidewall of the cooling cavity radially inward.

In some embodiments of the invention, the distance between the end surface of the free end of the rib and the side wall of the cooling cavity at the radial outer side is L, and L is more than or equal to 0.

In some embodiments of the present invention, a distance between a radially inner side wall of the cooling cavity and an inner wall of the center hole is p, a distance between a radially outer side wall of the cooling cavity and an outer peripheral wall of the cylinder body is q, and q > p.

According to some embodiments of the invention, the fins are disposed on an inner side wall of the cooling cavity and protrude from the inner wall of the cooling cavity in a radial direction of the central hole.

According to some embodiments of the invention, the ribs extend in a circumferential direction of the central bore.

According to some embodiments of the invention, the rib is a plurality of spaced apart ribs.

In some embodiments of the present invention, an inner wall surface of the cooling chamber between any adjacent two of the fins is an arc-shaped surface.

In some embodiments of the present invention, the distance between any two adjacent ribs is t, and the thickness of the ribs is s, wherein s ≦ t.

In some embodiments of the present invention, t is 1mm ≦ t ≦ 3 mm.

According to some embodiments of the invention, the cross-sectional area of the rib decreases in a direction from the fixed end to the free end of the rib; or the cross-sectional area of the rib is a constant value in the direction from the fixed end to the free end of the rib.

According to some embodiments of the invention, the end surface of the free end of the rib is an arc-shaped surface or a plane surface; or the free end of the rib is pointed.

According to some embodiments of the invention, the fins protrude from the inner wall surface of the cooling cavity by a height h, wherein h is greater than or equal to 1mm and less than or equal to 3 mm.

According to some embodiments of the invention, the maximum thickness of the fins is s, wherein 1mm ≦ s ≦ 2 mm.

The compressor according to the embodiment of the present invention includes: a housing; a motor located within the enclosure; the crankshaft is connected with the output end of the motor; the cylinder component is the cylinder component of the compressor, and is positioned in the shell; a first bearing; the cylinder assembly is clamped between the first bearing and the second bearing, and the crankshaft sequentially penetrates through the first bearing, the center hole of the cylinder assembly and the second bearing.

According to the compressor provided by the embodiment of the invention, the cooling cavity with the fins is arranged in the air cylinder assembly, the cooling medium passing through the cooling cavity can be in contact with the fins and the wall surface of the cooling cavity and can perform heat exchange, so that the air cylinder body can be directly or indirectly cooled, the cooling efficiency of the cooling medium on the air cylinder body can be further improved, the air cylinder body can further cool the refrigerant gas in the central hole, and the refrigerant gas can cool other structural components in the compressor in the process of flowing through the compressor, so that the temperature of the compressor is suitable for the normal operation of the compressor, the operation reliability of the compressor can be improved, the operation loss of the compressor is reduced, and the working efficiency of the compressor is improved.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic cross-sectional view of a cylinder assembly of a compressor according to an embodiment of the present invention;

FIG. 2 is a partial structural view in longitudinal section of a cylinder assembly of a compressor according to an embodiment of the present invention;

FIG. 3 is a partial structural view in longitudinal section of a cylinder assembly of the compressor according to an embodiment of the present invention;

FIG. 4 is a schematic view of a partial structure in longitudinal section of a compressor according to an embodiment of the present invention;

fig. 5 is a schematic longitudinal sectional structure view of a compressor according to an embodiment of the present invention.

Reference numerals:

the compressor (1) is provided with a compressor,

a cylinder assembly 10, a housing 20, a motor 30, a crankshaft 40, a first bearing 50, a second bearing 60, a reservoir 70,

a cylinder body 100, a cooling cavity 110, a first side wall 111, a second side wall 112, a central hole 120, a liquid inlet channel 130, a liquid outlet channel 140,

rib 200, fixed end 201, free end 202.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

As shown in fig. 1 to 5, a cylinder assembly 10 of a compressor 1 according to an embodiment of the present invention includes a cylinder body 100 and a rib 200, the cylinder body 100 having a cooling chamber 110 and a central hole 120 spaced therein. Fins 200 are disposed within cooling cavity 110. The central bore 120 may be used to mount the crankshaft 40 of the compressor 1, and the crankshaft 40 may move within the central bore 120 to compress the refrigerant gas. During the process of compressing the refrigerant gas by crankshaft 40, the temperature of the refrigerant gas and cylinder assembly 10 increases, which further increases the overall temperature of compressor 1.

Cooling cavity 110 may be used to introduce a cooling medium that may exchange heat with cylinder body 100 to reduce the temperature of cylinder assembly 10. The fins 200 may contact the cooling medium in the cooling chamber 110 to exchange heat with the cooling medium, and further exchange heat with the cylinder body 100. The fins 200 can realize indirect heat exchange between the cooling medium and the cylinder body 100, so as to enlarge the range of action of the cooling medium on the cylinder body 100, thereby improving the cooling efficiency of the cooling medium on the cylinder body 100, the cylinder body 100 can further exchange heat with the refrigerant gas in the central hole 120, so as to cool the refrigerant gas, thereby avoiding the refrigerant gas from being in a high-temperature state, and further avoiding the refrigerant gas from transmitting high temperature to other structural components (such as the motor 30) of the compressor 1 to influence the normal use condition thereof.

According to the cylinder assembly 10 of the compressor 1 provided by the embodiment of the invention, the cooling cavity 110 provided with the fins 200 is arranged, and the cooling medium passing through the cooling cavity 110 can be in contact with the fins 200 and the wall surface of the cooling cavity 110 and exchanges heat, so that the cylinder body 100 can be directly or indirectly cooled, the cooling efficiency of the cooling medium on the cylinder body 100 can be further improved, the cylinder body 100 can further cool the refrigerant gas in the central hole 120, and other structural components in the compressor 1 can be cooled in the process that the refrigerant gas with lower temperature flows through the compressor 1, so that the temperature of the compressor 1 is suitable for the normal operation of the compressor 1, the operation reliability of the compressor 1 can be improved, the operation loss of the compressor 1 can be reduced, and the working efficiency of the compressor 1 can be improved.

According to some embodiments of the present invention, the cooling cavity 110 may be a closed chamber, and a cooling medium is stored in the cooling cavity 110. As shown in fig. 1 and 4, according to some embodiments of the present invention, the cooling chamber 110 has a liquid inlet passage 130 and a liquid outlet passage 140 penetrating the cylinder body 100, in other words, the cylinder body 100 is provided with the liquid inlet passage 130 and the liquid outlet passage 140 which are spaced apart, one end of the liquid inlet passage 130 penetrates the outer wall surface of the cylinder body 100 to form a liquid inlet on the outer wall surface of the cylinder body 100, the other end of the liquid inlet passage 130 penetrates the wall surface of the cooling chamber 110 to communicate with the cooling chamber 110, one end of the liquid outlet passage 140 penetrates the outer wall surface of the cylinder body 100 to form a liquid outlet on the outer wall surface of the cylinder body 100, and the other end of the liquid outlet passage 140 penetrates the wall surface of the cooling chamber 110 to communicate.

The inlet channel 130 and the outlet channel 140 are spaced apart, for example, the inlet channel 130 is located at one end of the cooling chamber 110, and the outlet channel 140 is located at the other end of the cooling chamber 110. The cooling medium can enter the cooling cavity 110 from the liquid inlet through the liquid inlet channel 130, and after exchanging heat with the wall surface of the cooling cavity 110 and the fins 200, the cooling medium can flow out of the cylinder body 100 from the liquid outlet after passing through the liquid outlet channel 140. Thus, the cooling medium may flow continuously through the cooling cavity 110 and carry heat away from the cylinder body 100 to the environment external to the cylinder assembly 10.

It should be noted that, in some embodiments of the present invention, the cooling medium may be sourced from the compressor 1, that is, the cooling cavity 110 in the cylinder body 100 is communicated with other cooling channels in the compressor 1, and they share a set of cooling system, the other cooling channels in the compressor 1 are externally connected with a cooling medium supply pipeline, and the cooling medium supply pipeline flows through the other cooling channels in the compressor 1 and the cooling cavity 110 in the cylinder body 100 in sequence and then flows out of the compressor 1. Therefore, the pipeline arrangement of the cooling system in the compressor 1 can be reduced, and the cost can be reduced.

In some embodiments of the present invention, the cooling cavity 110 may be directly communicated with a cooling medium supply pipeline outside the compressor 1, a supply end of the cooling medium supply pipeline is connected to and communicated with the liquid inlet, the liquid outlet is communicated to the outside of the compressor 1 through a pipeline, the cooling medium flows into the cooling cavity 110 from the supply end of the cooling medium supply pipeline through the liquid inlet channel 130, and the cooling medium in the cooling cavity 110 may flow from the liquid outlet to the outside of the compressor 1 through a pipeline. Thereby, the cooling medium can be constantly flowed through the cooling chamber 110 and the heat of the cylinder body 100 is taken away to the environment outside the compressor 1, so that the cooling efficiency can be improved.

As shown in fig. 1, according to some embodiments of the present invention, the cooling cavity 110 may be an arc-shaped chamber, the cooling cavity 110 extends in a circumferential direction of the central hole 120, and the cooling cavity 110 is spaced apart from the central hole 120 in a radial direction of the central hole 120. For example, the central hole 120 may penetrate the cylinder body 100 in an axial direction of the cylinder body 100, the central hole 120 may be formed as a cylindrical hole, i.e., a space surrounded on the cylinder body 100 by the central hole 120 is cylindrical in shape, the cooling cavity 110 may be configured to be arc-shaped and extend in a circumferential direction of the central hole 120, and the cooling cavity 110 may be externally sheathed outside the central hole 120 and spaced apart from the central hole 120. Therefore, by planning the shape and arrangement of the cooling cavity 110, the cooling medium in the cooling cavity 110 can flow around the central hole 120, so that the cooling efficiency of the cooling medium on the refrigerant gas in the central hole 120 can be improved.

As shown in FIG. 1, in some embodiments of the present invention, the cooling cavity 110 may be an arc-shaped chamber moving along the circumferential direction of the central hole 120, a path from one end of the cooling cavity 110 to the other end of the cooling cavity 110 after passing through the cooling cavity 110 is a, and a path from one end of the cooling cavity 110 to the other end of the cooling cavity 110 without passing through the cooling cavity 110 is b, 1/4 ≦ a/(a + b) < 1. For example, a/(a + b) may be 1/2, 2/3, 3/4, 4/5, or the like.

As shown in fig. 2, 4 and 5, in some embodiments of the invention, the fins 200 may be located on the radially inner sidewall of the cooling cavity 110. For example, the cooling chamber 110 may include first and second

opposite sidewalls

111 and 112, the first sidewall 111 being located radially inward of the second sidewall 112 in a radial direction of the cylinder body 100, and the ribs 200 may be provided to the first sidewall 111. Therefore, after the cooling medium cools the fins 200, the fins 200 can cool the first side wall 111, and the first side wall 111 is close to the central hole 120, so that the cooling efficiency of the refrigerant gas in the central hole 120 can be improved.

As shown in FIG. 2, in some embodiments of the present invention, the distance between the end surface of the free end 202 of the rib 200 and the radially outer sidewall of the cooling cavity 110 is L ≧ 0. In other words, the distance between the end surface of the free end 202 of the rib 200 and the second side wall 112 of the cooling cavity 110 is equal to or greater than zero. It will be appreciated that in some examples of the invention, the fins 200 may be spaced apart from the second sidewall 112 to reduce the volume occupied by the fins 200 within the cooling cavity 110, which may increase the flow of cooling medium through the cooling cavity 110. In still other examples of the present invention, the rib 200 may contact the second sidewall 112 to enlarge the surface area of the rib 200, and thus the contact range of the rib 200 with the cooling medium may be enlarged to improve the efficiency of the operation of the rib 200.

As shown in fig. 1, in some embodiments of the present invention, the distance between the radially inner side wall of the cooling cavity 110 and the inner wall of the center hole 120 is p, and the distance between the radially outer side wall of the cooling cavity 110 and the outer peripheral wall of the cylinder body 100 is q, q > p. It is understood that the cooling cavity 110 is disposed close to the central hole 120 with respect to the central hole 120 and the outer circumferential wall of the cylinder body 100 in the radial direction of the cylinder body 100, the cooling cavity 110. It will also be appreciated that the thickness of the cylinder body 100 between the cooling cavity 110 and the central bore 120 is less than the thickness of the cylinder body 100 between the cooling cavity 110 and the outer peripheral wall of the cylinder body 100. Therefore, the volume of the cylinder body 100 between the cooling medium and the refrigerant gas can be reduced, and the cooling efficiency of the cooling medium on the refrigerant gas in the central hole 120 can be improved.

As shown in fig. 2 and 4, according to some embodiments of the present invention, the ribs 200 are disposed on the inner sidewall of the cooling chamber 110 and protrude from the inner wall of the cooling chamber 110 in the radial direction of the central hole 120. For example, the cooling cavity 110 may include first and second

opposite sidewalls

111 and 112, the first sidewall 111 being located radially inward of the second sidewall 112 in a radial direction of the cylinder body 100, and the rib 200 including first and second opposite sides, the first side being connected to the first sidewall 111, and the second side extending toward the second sidewall 112. This can enlarge the effective operating range of rib 200, and can improve the operating effect of rib 200.

According to some embodiments of the invention, the ribs 200 may extend in a circumferential direction of the central bore 120. For example, the ribs 200 may be formed as arc-shaped pieces, which may extend toward the circumferential direction of the central hole 120. Therefore, the fins 200 can be matched with the structure of the cooling cavity 110, so that the surface area of the arc-shaped piece can be enlarged, the installation of the arc-shaped piece is convenient, the action range of the fins 200 on each area of the cylinder body 100 can be uniformized, the heat exchange efficiency of each area of the cylinder body 100 can be uniformized, and the cooling efficiency of the refrigerant gas in the central hole 120 can be uniformized.

As shown in fig. 2-5, the rib 200 may be a plurality of spaced apart ribs according to some embodiments of the present invention. It should be noted that the terms "plurality" and "a" as used herein mean two or more. For example, the ribs 200 are each formed as an arc-shaped piece, one end of the rib 200 may extend to one end in the circumferential direction of the cooling chamber 110, the other end of the rib 200 may extend to the other end in the circumferential direction of the cooling chamber 110, and a plurality of ribs 200 may be provided at intervals along the axial direction of the cylinder body 100. As another example, a plurality of ribs 200 may be provided at intervals along the circumferential direction of the cylinder body 100. For another example, some of the plurality of ribs 200 may be disposed at intervals in the circumferential direction of the cylinder body 100, and another some of the plurality of ribs 200 may be disposed at intervals in the axial direction of the cylinder body 100. Thus, the cooling efficiency of the cylinder assembly 10 may be further improved by the action of the plurality of fins 200.

As shown in fig. 3, in some embodiments of the present invention, the inner wall surface of the cooling chamber 110 between any two adjacent fins 200 is an arc-shaped surface. This improves the stability of connection between fins 200 and the wall surface of cooling chamber 110.

As shown in FIG. 3, in some embodiments of the present invention, the distance between any two adjacent ribs 200 is t, and the thickness of the ribs 200 is s, where s ≦ t. In some examples of the present invention, the plurality of ribs 200 may be arranged at intervals along the axial direction of the cylinder body 100, the minimum value of the distance between any two adjacent ribs 200 in the axial direction of the cylinder body 100 is t, the maximum value of the thickness of the plurality of ribs 200 is s, and s ≦ t. For example, a plurality of fins 200 may be uniformly spaced along the axial direction of the cylinder body 100, each fin 200 has a uniform structure and shape, and each fin 200 has a thickness s which is smaller than or equal to t. Thereby, it is possible to ensure that there is sufficient space inside the cooling chamber 110 to pass the cooling medium.

In some embodiments of the present invention, t is 1mm ≦ t ≦ 3 mm. Tests show that the distance between the two fins 200 is controlled to be between 1mm and 3mm, and of course, the boundary values of 1mm and 3mm can be adopted, so that the cooling medium contained in the cooling cavity 110 can meet the requirement of the heat exchange efficiency of the cylinder assembly 10.

As shown in FIG. 3, according to some embodiments of the present invention, the cross-sectional area of the rib 200 gradually decreases in a direction from the fixed end 201 to the free end 202 of the rib 200. Alternatively, the cross-sectional area of the rib 200 is constant in the direction from the fixed end 201 to the free end 202 of the rib 200. Therefore, the connection stability of the fixed end 201 of the rib 200 and the wall surface of the cooling cavity 110 can be ensured, and the volume of the free end 202 of the rib 200 can be reduced, so that the occupied volume of the rib 200 in the cooling cavity 110 can be reduced, and further, sufficient cooling medium can be ensured to pass through the cooling cavity 110.

As shown in fig. 3, according to some embodiments of the present invention, the end surface of the free end 202 of the rib 200 is an arc surface or a flat surface, so that the surface area of the rib 200 can be enlarged, and the contact area between the rib 200 and the cooling medium can be enlarged to improve the heat exchange efficiency between the rib 200 and the cooling medium. Or the free end 202 of the rib 200 is pointed, so that the occupied volume of the rib 200 in the cooling chamber 110 can be reduced, and sufficient cooling medium can be ensured to pass through the cooling chamber 110. For example, the free end 202 of the rib 200 may be configured to form a rectangular parallelepiped, conical, hemispherical, truncated cone, or the like.

As shown in FIG. 3, according to some embodiments of the present invention, the fins 200 protrude from the inner wall surface of the cooling chamber 110 by a height h, where h is 1mm ≦ h ≦ 3 mm. It will be appreciated that the distance between the end face of the free end 202 of the rib 200 and the end face of the fixed end 201 needs to be controlled between 1mm and 3mm, or 1mm or 3 mm. Therefore, the fins 200 can improve the heat exchange efficiency between the cylinder body 100 and the cooling medium, and can also enable the cooling cavity 110 to have enough space for the cooling medium to pass through, thereby improving the cooling efficiency of the cylinder assembly 10.

As shown in FIG. 3, according to some embodiments of the present invention, the maximum thickness of the rib 200 is s, where 1mm ≦ s ≦ 2 mm. It will be appreciated that the maximum thickness of the fins 200 can be controlled between 1mm and 2mm, but of course, it can be set to 1mm or 2 mm. Through experimental measurement, the fins 200 with the thickness within this range can improve the heat exchange efficiency between the cylinder body 100 and the cooling medium, and can also enable the cooling cavity 110 to have enough space therein to pass through the cooling medium, so that the cooling efficiency of the cylinder assembly 10 can be improved.

According to some embodiments of the present invention, the cylinder block 100 has a plurality of cooling cavities 110 therein, the plurality of cooling cavities 110 may be independent of each other, and the plurality of cooling cavities 110 may also communicate with each other. For example, the plurality of cooling cavities 110 may be arranged at intervals in the axial direction of the cylinder body 100. It should be noted that the terms "plurality" and "a" as used herein mean two or more. Thus, the cylinder block 100 can be cooled by the plurality of cooling cavities 110, and the cooling efficiency of the cylinder block 100 can be improved.

As shown in fig. 4 and 5, the compressor 1 according to the embodiment of the present invention includes a housing 20, a motor 30, a crankshaft 40, a first bearing 50, a second bearing 60, and a cylinder assembly 10, wherein the motor 30 is located in the housing 20, and the crankshaft 40 is connected to an output end of the motor 30. The cylinder assembly 10 is the cylinder assembly 10 of the compressor 1 as described above, and the cylinder assembly 10 is located in the casing 20. The cylinder assembly 10 is interposed between the first bearing 50 and the second bearing 60, and the crankshaft 40 is sequentially inserted through the first bearing 50, the center hole 120 of the cylinder assembly 10, and the second bearing 60.

According to the compressor 1 provided by the embodiment of the invention, the cooling cavity 110 with the fins 200 is arranged in the cylinder assembly 10, the cooling medium passing through the cooling cavity 110 can be in contact with the fins 200 and the wall surface of the cooling cavity 110 and exchanges heat, so that the cylinder body 100 can be directly or indirectly cooled, the cooling efficiency of the cooling medium on the cylinder body 100 can be further improved, the cylinder body 100 can further cool the refrigerant gas in the central hole 120, and other structural components in the compressor 1 can be cooled in the process that the refrigerant gas flows through the compressor 1, so that the temperature of the compressor 1 is suitable for the normal operation of the compressor 1, the operation reliability of the compressor 1 can be improved, the operation loss of the compressor 1 can be reduced, and the working efficiency of the compressor 1 can be improved.

According to some embodiments of the invention, the compressor 1 may be a rotary compressor.

In some embodiments of the present invention, compressor 1 has a plurality of cylinder assemblies 10. This can improve the operation efficiency of the compressor 1.

A compressor 1 according to an embodiment of the present invention is described in detail below with reference to fig. 1 to 5. It is to be understood that the following description is illustrative only and is not intended to be in any way limiting. The compressor 1 may be a hermetic rotary compressor.

As shown in fig. 5, the hermetically sealed rotary compressor includes a cylinder assembly 10, a casing 20, a motor 30, a crankshaft 40, a first bearing 50, a second bearing 60, and a reservoir 70. The bottom of the housing 20 contains a pool of organic oil. Cylinder assembly 10, motor 30, crankshaft 40, first bearing 50, and second bearing 60 are all located within housing 20. The reservoir 70 is located outside the housing 20 and is connected to the housing 20.

As shown in fig. 1 to 5, the cylinder assembly 10 includes a cylinder body 100 and a rib 200, the cylinder body 100 having a cylindrical shape, the cylinder body 100 having a center hole 120 penetrating therethrough in an axial direction thereof. The center hole 120 may be formed as a cylindrical hole, i.e., the center hole 120 is cylindrical in shape in the space enclosed on the cylinder body 100. A cooling cavity 110 is provided in the cylinder body 100, the cooling cavity 110 may be an arc-shaped cavity, the cooling cavity 110 extends in a circumferential direction of the central hole 120, and the cooling cavity 110 is spaced apart from the central hole 120 in a radial direction of the central hole 120. The cooling cavity 110 surrounds the central bore 120 with as large an enclosed area as possible to provide sufficient cooling of the cylinder body 100. For example, moving in the circumferential direction of the central hole 120, a path from one end of the cooling cavity 110 to the other end of the cooling cavity 110 after passing through the cooling cavity 110 is a, a path from one end of the cooling cavity 110 to the other end of the cooling cavity 110 without passing through the cooling cavity 110 is b, and a/(a + b) may be 2/3, 3/4, 4/5, or the like.

In the radial direction of the cylinder body 100, the cooling cavity 110 is disposed close to the central hole 120 with respect to the central hole 120 and the outer peripheral wall of the cylinder body 100, the cooling cavity 110. It will be appreciated that the thickness of the cylinder body 100 between the cooling cavity 110 and the central bore 120 is less than the thickness of the cylinder body 100 between the cooling cavity 110 and the outer peripheral wall of the cylinder body 100.

As shown in fig. 4, the cylinder body 100 is provided with a liquid inlet channel 130 and a liquid outlet channel 140 which are spaced apart from each other, one end of the liquid inlet channel 130 penetrates through the outer wall surface of the cylinder body 100 to form a liquid inlet on the outer wall surface of the cylinder body 100, the other end of the liquid inlet channel 130 penetrates through the wall surface of the cooling cavity 110 to communicate with the cooling cavity 110, one end of the liquid outlet channel 140 penetrates through the outer wall surface of the cylinder body 100 to form a liquid outlet on the outer wall surface of the cylinder body 100, and the other end of the liquid outlet channel 140 penetrates through the wall surface of the cooling cavity 110 to communicate. The inlet channel 130 is located at one end of the cooling chamber 110, and the outlet channel 140 is located at the other end of the cooling chamber 110. The cooling medium can enter the cooling cavity 110 from the liquid inlet through the liquid inlet channel 130, and after exchanging heat with the wall surface of the cooling cavity 110 and the fins 200, the cooling medium can flow out of the cylinder body 100 from the liquid outlet after passing through the liquid outlet channel 140.

As shown in fig. 2-5, the number of fins 200 may be multiple, and multiple fins 200 are disposed in the cooling chamber 110. The plurality of ribs 200 may be uniformly spaced along the axial direction of the cylinder body 100. The cooling chamber 110 may include opposite first and

second sidewalls

111 and 112, the first sidewall 111 being located radially inward of the second sidewall 112 in a radial direction of the cylinder body 100, and the rib 200 being connected to the first sidewall 111. The distance between the free end of the rib 200 and the first side wall 111 of the cooling cavity 110 is h, and h is more than or equal to 1mm and less than or equal to 3 mm. Each rib 200 may be formed as an arc-shaped piece, and the arc-shaped piece may extend toward the circumferential direction of the central hole 120. One end of the rib 200 may extend to one end in the circumferential direction of the cooling chamber 110, and the other end of the rib 200 may extend to the other end in the circumferential direction of the cooling chamber 110. The ribs 200 are spaced apart from the second sidewall 112. The distance between any two adjacent fins 200 is t, the thickness of the fins 200 is s, s is less than or equal to t, t is less than or equal to 3mm and is less than or equal to 1mm, and s is less than or equal to 2 mm.

As shown in fig. 4 and 5, the first bearing 50 and the second bearing 60 are both cover plate type bearings, and the first bearing 50 and the second bearing 60 are respectively covered at both ends in the axial direction of the cylinder assembly 10. The first and

second bearings

50, 60 and the central bore 120 of the cylinder assembly 10 may be configured to form a compression chamber with which the reservoir 70 communicates. The low-temperature low-pressure refrigerant gas is compressed into the high-temperature high-pressure refrigerant gas in the compression cavity. The motor 30 is positioned above the cylinder assembly 10, and the motor 30 is connected to an inner wall surface of the casing 20. One end of the crankshaft 40 is connected to an output end of the motor 30, and the other end of the crankshaft 40 sequentially penetrates through the first bearing 50, the central hole 120 of the cylinder assembly 10, and the second bearing 60.

It should be noted that the shape of the rib 200 and the shape of the gap groove formed between any two adjacent ribs 200 may be various, for example, the rib 200 may be rectangular, triangular, trapezoidal, semicircular, etc. In addition, the compressor 1 may have a plurality of cylinder assemblies 10, each having at least one cooling chamber 110 therein; or a plurality of cooling chambers 110 are formed in one cylinder assembly 10 of the compressor 1. The plurality of cooling chambers 110 in a single or a plurality of cylinder assemblies 10 may be connected to each other in series or in parallel, and a cooling medium may flow through each cooling chamber 110 to remove heat.

In the cooling cavity 110, a continuous liquid cooling medium flows through the cooling cavity, and the wall surface of the metal cooling cavity 110 and the fins 200 absorb the high-temperature heat of the cylinder body 100 and quickly carry the heat out to the environment outside the compressor 1, thereby realizing the efficient cooling of the inside of the compressor 1.

According to the compressor 1 provided by the embodiment of the invention, by arranging the fins 200, the cooling and heat dissipation capacity and the heat transfer efficiency of the cooling cavity 110 can be greatly improved, and good cooling and heat dissipation of the high-temperature cylinder assembly 10 in the compressor 1 can be realized. And then the temperature of the air suction and exhaust of the compressor 1 and the internal high temperature are obviously reduced, and the performance level and the reliability of the compressor 1 are further improved, and especially under the severe working conditions of high temperature and high load, the effect is more obvious.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A cylinder assembly for a compressor, comprising:

a cylinder body having a spaced cooling cavity and a central bore therein;

the fins are arranged in the cooling cavity.

2. The compressor cylinder assembly according to claim 1, wherein said cooling cavity is an arc-shaped cavity, said cooling cavity extending in a circumferential direction of said central bore, and said cooling cavity being spaced from said central bore in a radial direction of said central bore.

3. The compressor cylinder assembly according to claim 2, wherein the rib is located on a side wall radially inward of the cooling chamber.

4. The compressor cylinder assembly according to claim 3, wherein a distance L between an end surface of a free end of the rib and a side wall of the cooling chamber at a radially outer side is L ≧ 0.

5. The cylinder assembly of a compressor according to claim 2, wherein a distance between a radially inner side wall of said cooling cavity and an inner wall of said center hole is p, a distance between a radially outer side wall of said cooling cavity and an outer peripheral wall of said cylinder body is q, and q > p.

6. The cylinder assembly of a compressor according to claim 1, wherein the ribs are formed on an inner sidewall of the cooling chamber and protrude from the inner wall of the cooling chamber in a radial direction of the center hole.

7. The compressor cylinder assembly according to claim 1, wherein the rib extends in a circumferential direction of the center hole.

8. The compressor cylinder assembly according to claim 1, wherein the rib is a plurality of spaced apart ribs.

9. The compressor cylinder assembly according to claim 8, wherein an inner wall surface of the cooling chamber between any adjacent two of the fins is an arc-shaped surface.

10. The compressor cylinder assembly as set forth in claim 8, wherein a distance between any adjacent two of said ribs is t, and a thickness of said ribs is s, wherein s ≦ t.

11. The cylinder assembly of a compressor according to claim 10, wherein t is 1mm ≦ 3 mm.

12. The cylinder assembly of a compressor according to claim 1, wherein a cross-sectional area of the rib is gradually reduced in a direction from a fixed end to a free end of the rib;

or the cross-sectional area of the rib is a constant value in the direction from the fixed end to the free end of the rib.

13. The cylinder assembly of the compressor as claimed in claim 1, wherein the end surface of the free end of the rib is an arc-shaped surface or a flat surface;

or the free end of the rib is pointed.

14. The cylinder assembly of the compressor as claimed in claim 1, wherein the fins protrude from the inner wall surface of the cooling chamber by a height h, wherein h is 1mm or more and 3mm or less.

15. The cylinder assembly of a compressor according to claim 1, wherein the maximum thickness of the rib is s, wherein s is 1mm ≦ 2 mm.

16. A compressor, comprising:

a housing;

a motor located within the enclosure;

the crankshaft is connected with the output end of the motor;

a cylinder assembly of the compressor according to any one of claims 1 to 15, the cylinder assembly being located within the casing;

a first bearing;

the cylinder assembly is clamped between the first bearing and the second bearing, and the crankshaft sequentially penetrates through the first bearing, the center hole of the cylinder assembly and the second bearing.