Compressor heat dissipation structure, rotary compressor and refrigeration equipment

Abstract

The utility model discloses a compressor heat dissipation structure, rotor type compressor and refrigeration plant, heat dissipation structure includes stator fixed frame and heat dissipation spiral vane, stator fixed frame is annular structure, and the motor stator of compressor is fixed in stator fixed frame inside, and the shell of compressor is fixed in stator fixed frame outside, to make the inner peripheral wall of shell and the outer peripheral wall of motor stator form first cooling channel, a plurality of heat dissipation spiral vane is spaced apart and set in first cooling channel, and along the circumferential distribution of motor stator is set up. Through setting up annular stator fixed frame between motor stator and the shell of compressor, form the first cooling channel with certain width between motor stator and shell, improve the flowability of cooling medium, and through setting up a plurality of heat dissipation spiral vane around the outer peripheral interval arrangement of motor stator in first cooling channel, make the cooling medium in first cooling channel change from laminar flow into turbulent state, improve the heat dissipation efficiency of motor stator.

Description

Technical Field

[0001] This utility model relates to the field of compressor technology, and in particular to a compressor heat dissipation structure, a rotary compressor, and a refrigeration device. Background Technology

[0002] In traditional rotary compressors, the stator and casing are fitted together by a thermal sleeve. During operation, the stator core and coils generate a significant amount of heat. Heat dissipation primarily relies on the refrigerant flowing through the gap between the stator and rotor, as well as forced heat exchange between the stator and casing in the air. This cooling method is generally sufficient for the motor's cooling needs under normal operating conditions. However, in high-temperature regions such as the Middle East, the increased ambient temperature significantly reduces the heat dissipation efficiency of traditional structures, leading to increased motor temperature. This triggers the overheat protection mechanism, affecting the compressor's normal operation. Utility Model Content

[0003] The present invention provides a compressor heat dissipation structure, a rotary compressor, and a refrigeration device, which aims to solve the problem of low heat dissipation efficiency of existing rotary compressors.

[0004] In a first aspect, this utility model discloses a compressor heat dissipation structure, including a stator fixing frame and heat dissipation spiral blades; the stator fixing frame is an annular structure, the motor stator of the compressor is fixed inside the stator fixing frame, and the outer casing of the compressor is fixed outside the stator fixing frame, so that a first cooling channel is formed between the inner peripheral wall of the outer casing and the outer peripheral wall of the motor stator, and the outlet of the first cooling channel is located at the top of the first cooling channel; a plurality of heat dissipation spiral blades are arranged alternately in the first cooling channel and distributed along the circumference of the motor stator.

[0005] In some embodiments, each of the heat dissipation spiral blades extends along the axial direction of the motor stator.

[0006] In some embodiments, the plurality of heat dissipation spiral blades are unevenly distributed along the circumference of the motor stator.

[0007] In some embodiments, a plurality of the heat dissipation spiral blades are evenly distributed along the circumference of the motor stator.

[0008] In some embodiments, the heat dissipation spiral blades are provided with micropores.

[0009] In some embodiments, the stator fixing frame includes an upper fixing frame and a lower fixing frame; the upper fixing frame is fixed to the top end of the outer peripheral wall of the motor stator, and the lower fixing frame is fixed to the bottom end of the outer peripheral wall of the motor stator.

[0010] In some embodiments, one end of the heat dissipation spiral blade is fixedly connected to the lower fixed frame, and the other end of the heat dissipation spiral blade is fixedly connected to the upper fixed frame.

[0011] In some embodiments, the upper fixing frame includes an upper annular body and a plurality of upper flanges fixed on the outer peripheral wall of the upper annular body; the lower fixing frame includes a lower annular body and a plurality of lower flanges fixed on the outer peripheral wall of the lower annular body, the number of upper flanges being the same as the number of heat dissipation spiral blades, and the number of lower flanges being the same as the number of heat dissipation spiral blades; one end of each heat dissipation spiral blade is fixedly connected to the lower flange, and the other end of each heat dissipation spiral blade is fixedly connected to the upper flange.

[0012] Secondly, this utility model discloses a rotary compressor, including a housing, a motor stator, a motor rotor, and the compressor heat dissipation structure described in the first aspect; the outlet of the first cooling channel is connected to the exhaust pipe at the top of the housing; the motor rotor is disposed in the middle of the motor stator, and a second cooling channel is formed between the outer peripheral wall of the motor rotor and the inner peripheral wall of the motor stator, and the outlet of the second cooling channel is connected to the exhaust pipe at the top of the housing.

[0013] Thirdly, this utility model discloses a refrigeration device, including an evaporator, a condenser, and the rotary compressor described in the second aspect; the outlet of the evaporator is connected to the inlet pipe of the rotary compressor, and the inlet of the condenser is connected to the exhaust pipe.

[0014] The beneficial effects of this utility model are as follows: This utility model discloses a compressor heat dissipation structure, a rotary compressor, and a refrigeration device, including a stator mounting frame and heat dissipation spiral blades. The stator mounting frame is an annular structure. The motor stator of the compressor is fixed inside the stator mounting frame, and the compressor housing is fixed outside the stator mounting frame, so that a first cooling channel is formed between the inner peripheral wall of the housing and the outer peripheral wall of the motor stator. The outlet of the first cooling channel is located at the top of the first cooling channel. Multiple heat dissipation spiral blades are spaced apart within the first cooling channel and distributed circumferentially along the motor stator. By setting an annular stator mounting frame between the motor stator and the compressor housing, the motor stator can be supported, and a first cooling channel of a certain width can be formed between the motor stator and the housing. This adds a heat exchange path inside the compressor, improving the fluidity of the cooling medium. Furthermore, by setting multiple heat dissipation spiral blades spaced apart around the outer periphery of the motor stator within the first cooling channel, the cooling medium in the first cooling channel changes from laminar flow to turbulent flow, significantly improving the heat dissipation efficiency of the motor stator. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a structural diagram of the compressor heat dissipation structure and the motor stator provided in an embodiment of the present utility model; Figure 2 A structural diagram of the compressor heat dissipation structure and the motor stator provided in the embodiment of this utility model (arrows indicate the overall flow trend of the cooling medium). Figure 3 A cross-sectional view of a rotary compressor provided for an embodiment of this utility model; Figure 4 A cross-sectional view of a rotary compressor provided for an embodiment of this utility model (arrows indicate the overall flow trend of the cooling medium). Figure 5 A schematic block diagram of a refrigeration device provided in an embodiment of this utility model.

[0017] Icon labels: 10. Compressor heat dissipation structure; 11. Stator fixing bracket; 111. Upper fixing bracket; 1111. Upper annular body; 1112. Upper flange; 112. Lower fixing bracket; 1121. Lower annular body; 1122. Lower annular flange; 12. Heat dissipation spiral blades; 20. Housing; 30. Motor stator; 40. First cooling channel; 50. Motor rotor; 60. Second cooling channel; 70. Crankshaft; 80. Exhaust pipe. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0019] It should be understood that, when used in this specification and the appended claims, the terms "comprising" and "including" indicate the presence of the described features, integrals, steps, operations, elements and, or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and, or collections thereof.

[0020] It should also be noted that, unless otherwise explicitly specified and limited, terms such as "installation," "connection," "joining," "fixing," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. When an component is referred to as being "on" or "below" another component, the component can be located "directly" or "indirectly" on the other component, or there may be one or more intermediary components. The terms "first," "second," "third," etc., are only for the convenience of describing this technical solution and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first," "second," "third," etc., may explicitly or implicitly include one or more of that feature. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0021] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0022] It should also be further understood that the terms "and" and "or" as used in this specification and the appended claims refer to any combination of one or more of the associated listed items and all possible combinations, and include such combinations.

[0023] like Figures 1 to 5 As shown, Figure 1 This is a structural diagram of the compressor heat dissipation structure and the motor stator provided in an embodiment of the present utility model; Figure 2 A structural diagram of the compressor heat dissipation structure and the motor stator provided in the embodiment of this utility model (arrows indicate the overall flow trend of the cooling medium). Figure 3 A cross-sectional view of a rotary compressor provided for an embodiment of this utility model; Figure 4 A cross-sectional view of a rotary compressor provided for an embodiment of this utility model (arrows indicate the overall flow trend of the cooling medium). Figure 5 A schematic block diagram of a refrigeration device provided in an embodiment of this utility model.

[0024] It should be noted that the arrows in the figure only indicate the overall flow trend of the cooling medium in the compressor. The specific flow path should be understood in conjunction with the description in the following embodiments.

[0025] This utility model discloses a compressor heat dissipation structure 10, which is used to improve the heat dissipation efficiency of the compressor to meet the heat dissipation requirements of the compressor in high-temperature environments.

[0026] See also Figure 1 , Figure 2 , Figure 3 and Figure 4 In one embodiment, the compressor heat dissipation structure 10 includes a stator fixing frame 11 and heat dissipation spiral blades 12. The stator fixing frame 11 is an annular structure. The motor stator 30 of the compressor is fixed inside the stator fixing frame 11, and the outer casing 20 of the compressor is fixed outside the stator fixing frame 11, so that a first cooling channel 40 is formed between the inner peripheral wall of the outer casing 20 and the outer peripheral wall of the motor stator 30. The outlet of the first cooling channel 40 is located at the top of the first cooling channel 40. A plurality of heat dissipation spiral blades 12 are arranged alternately in the first cooling channel 40 and are distributed along the circumference of the motor stator 30.

[0027] The stator mounting bracket 11 is a ring-shaped bracket with a certain width. The stator mounting bracket 11 is made of a metal material (such as aluminum alloy or copper alloy) with good thermal conductivity and a certain strength. The inner diameter of the stator mounting bracket 11 is adapted to the outer diameter of the motor stator 30, so that the inner peripheral wall of the stator mounting bracket 11 is connected to the outer peripheral wall of the motor stator 30. The stator mounting bracket 11 can be connected to the outer peripheral wall of the motor stator 30 by clamping or welding, thereby fixing the motor stator 30 inside the stator mounting bracket 11. The connection points on the outer periphery of the stator mounting bracket 11 are connected to the inner peripheral wall of the outer casing 20, specifically by welding, thereby fixing the outer casing 20 outside the stator mounting bracket 11.

[0028] Therefore, the stator mounting bracket 11 serves both to support the motor stator 30 and to simultaneously form a first cooling channel 40 of a certain width between the motor stator 30 and the housing 20. The first cooling channel 40 extends axially along the motor stator 30, with its outlet at the top and its inlet at the bottom. A portion of the cooling medium exists within the first cooling channel 40. During compressor operation, a pressure difference is created within the compressor, causing the cooling medium within the first cooling channel 40 to flow upwards, thereby carrying away heat from the surface of the motor stator 30 and dissipating heat from the motor stator 30. Compared to traditional compressors, where only the gap between the rotor and stator serves as a cooling channel, this embodiment adds a cooling path and improves the flowability of the cooling medium, enhancing cooling efficiency and strengthening the overall heat dissipation capacity of the motor. The multiple heat dissipation spiral blades 12, arranged circumferentially around the motor stator 30 and located in the first cooling channel 40, cause the cooling medium to transition from a laminar to a turbulent state as it flows. Since the cooling medium has a higher heat transfer coefficient in the turbulent state, the heat exchange efficiency between the cooling medium and the motor stator 30 is improved, thereby further enhancing the motor's heat dissipation efficiency. The heat dissipation spiral blades 12 can also be made of a metal material with good thermal conductivity (such as aluminum alloy or copper alloy).

[0029] Specifically, the cooling medium present in the first cooling channel 40 can be droplets of refrigerant oil in the bottom cavity of the compressor, refrigerant circulating in the refrigeration equipment, or a mixture of both. During compressor operation, the motor rotor 50 rotates at high speed, driving the crankshaft 70 to rotate synchronously, throwing the cooling medium in the bottom cavity of the compressor upwards. A pressure difference is formed between the upper and lower cavities of the motor, and the cooling medium enters the gap between the motor rotor 50 and the motor stator 30 and the first cooling channel 40. The gap between the motor rotor 50 and the motor stator 30 can serve as the second cooling channel 60. For example, when the motor rotor 50 rotates, some of the splashed droplets will fall onto the end windings of the motor stator 30 or the inner wall of the housing 20, flowing into the first cooling channel 40 along the end of the motor stator 30 or the inner wall of the housing 20.

[0030] Furthermore, the pressure difference drives the cooling medium to flow from bottom to top in the first cooling channel 40 and the second cooling channel 60 to remove heat from the motor. After heat exchange is completed, the cooling medium is discharged from the exhaust pipe 80 at the top of the channel and enters the condenser. When the cooling medium flows through the first cooling channel 40, it is turbulent by the heat dissipation spiral blades 12, changing from a laminar flow state to a turbulent flow state, thereby improving the heat exchange efficiency with the surface of the motor stator 30.

[0031] See also Figure 1 , Figure 2 , Figure 3 and Figure 4In one embodiment, each heat dissipation spiral blade 12 extends along the axial direction of the motor stator 30.

[0032] In this embodiment, all the heat dissipation spiral blades 12 extend along the axial direction of the motor stator 30, so that the cooling medium between any two adjacent heat dissipation spiral blades 12 in the first cooling channel 40 can be transformed into a turbulent state and flow along the axial direction of the motor stator 30, and be discharged from the upper outlet of the first cooling channel 40, so as to improve the heat exchange efficiency of the surface of the motor stator 30 and thus ensure the heat dissipation efficiency of the motor stator 30.

[0033] In one embodiment, a plurality of heat dissipation spiral blades 12 are evenly distributed along the circumference of the motor stator 30.

[0034] In this embodiment, while ensuring that each heat dissipation spiral blade 12 extends along the axial direction of the motor stator 30, multiple heat dissipation spiral blades 12 are evenly distributed along the circumference of the motor stator 30, so that the cooling medium flows relatively evenly from bottom to top around the motor stator 30 to dissipate heat evenly from the motor stator 30. For example, four heat dissipation spiral blades 12 are distributed at intervals along the outer circumference of the motor stator 30 in the first cooling channel 40, and the arc of the outer circumference of the motor stator 30 corresponding to any two adjacent heat dissipation spiral blades 12 is π / 2.

[0035] In another embodiment, a plurality of heat dissipation spiral blades 12 are unevenly distributed along the circumference of the motor stator 30.

[0036] In this embodiment, since the heat generated by the motor during operation is not necessarily uniformly distributed along its circumference, while ensuring that each heat dissipation spiral blade 12 extends along the axial direction of the motor stator 30, a non-uniformly distributed density of the heat dissipation spiral blades 12 is adopted. A denser arrangement of the heat dissipation spiral blades 12 is used in areas with higher heat loads to achieve locally enhanced heat dissipation. Furthermore, the non-uniform distribution of the heat dissipation spiral blades 12 has a more significant disturbance effect on the cooling medium, resulting in better heat dissipation.

[0037] It should be noted that the non-uniform distribution referred to in this embodiment mainly means that the distribution density of the heat dissipation spiral blades 12 in the area with higher heat load (i.e., the number of heat dissipation spiral blades 12 corresponding to the same arc is greater) is higher than that in the area with lower heat load. In the area with higher heat load, the multiple heat dissipation spiral blades 12 can be uniformly distributed or non-uniformly distributed.

[0038] In one embodiment, the heat dissipation spiral blade 12 may be provided with micropores.

[0039] In this embodiment, micro-holes can be formed on the heat dissipation spiral blades 12. The micro-vortices generated by the micro-holes enhance the turbulence effect and further improve the heat exchange efficiency. Micro-holes can be formed on all heat dissipation spiral blades 12 to improve the heat dissipation efficiency around the motor stator 30 in all directions, or micro-holes can be formed only on the heat dissipation spiral blades 12 in areas with high heat load.

[0040] See also Figure 1 , Figure 2 , Figure 3 and Figure 4 In one embodiment, the stator fixing frame 11 includes an upper fixing frame 111 and a lower fixing frame 112; the upper fixing frame 111 is fixed to the top of the outer peripheral wall of the motor stator 30, and the lower fixing frame 112 is fixed to the bottom of the outer peripheral wall of the motor stator 30.

[0041] In this embodiment, the upper fixing bracket 111 is fixed to the top end of the outer peripheral wall of the motor stator 30, and the lower fixing bracket 112 is fixed to the bottom end of the outer peripheral wall of the motor stator 30, which can more stably support and fix the motor stator 30. The upper fixing bracket 111 and the lower fixing bracket 112 can be fixed to the top and bottom ends of the outer peripheral wall of the motor stator 30 by welding or clamping, respectively.

[0042] See also Figure 1 , Figure 2 , Figure 3 and Figure 4 In one embodiment, one end of the heat dissipation spiral blade 12 is fixedly connected to the lower fixed frame 112, and the other end of the heat dissipation spiral blade 12 is fixedly connected to the upper fixed frame 111.

[0043] In this embodiment, the lower fixing frame 112 and the upper fixing frame 111 are respectively disposed at the bottom and top of the outer peripheral wall of the motor stator 30 to ensure the length of the first cooling channel 40. At the same time, the two ends of the heat dissipation spiral blade 12 are fixedly connected to the lower fixing frame 112 and the upper fixing frame 111 respectively, which can be welded. The heat dissipation spiral blade 12 can extend from the bottom of the outer peripheral wall of the motor stator 30 to the top of the outer peripheral wall of the motor stator 30, so that all the heat dissipation spiral blades 12 also pass through the entire area of ​​the motor stator 30 from bottom to top, so as to ensure that the turbulent cooling medium can flow through the entire first cooling channel 40, thereby improving the heat dissipation efficiency of the entire motor stator 30.

[0044] See also Figure 1 , Figure 2 , Figure 3 and Figure 4In one embodiment, the upper fixing frame 111 includes an upper annular body 1111 and a plurality of upper flanges 1112 fixed on the outer peripheral wall of the upper annular body 1111; the lower fixing frame 112 includes a lower annular body 1121 and a plurality of lower flanges 1122 fixed on the outer peripheral wall of the lower annular body 1121. The number of upper flanges 1112 is the same as the number of heat dissipation spiral blades 12, and the number of lower flanges 1122 is the same as the number of heat dissipation spiral blades 12. One end of the heat dissipation spiral blade 12 is fixedly connected to the lower flange 1122, and the other end of the heat dissipation spiral blade 12 is fixedly connected to the upper flange 1112.

[0045] In this embodiment, the inner peripheral walls of the upper annular body 1111 and the lower annular body 1121 are the inner peripheral walls of the stator fixing frame 11. The inner peripheral wall of the lower annular body 1121 is welded to the bottom end of the outer peripheral wall of the motor stator 30. One end of a plurality of lower flanges 1122 is welded to the outer peripheral wall of the lower annular body 1121 at intervals, and the other end of the lower flanges 1122 is welded to the inner peripheral wall of the outer shell 20. The spacing between each lower flange 1122 is the same as the spacing between each heat dissipation spiral blade 12, that is, the lower flanges 1122 are evenly or unevenly distributed along the circumference of the lower annular body 1121. The inlet of the first cooling channel 40 is formed between the mutually spaced lower flanges 1122.

[0046] The lower flange 1122 is a sheet with a certain width, and its width direction is the direction of the normal of the lower annular body 1121, thereby separating the motor stator 30 from the compressor housing to form the first cooling channel 40. The width of the stator fixing bracket 11 is approximately equal to the width of the lower flange 1122 (the width of the lower annular body 1121 is relatively thin), that is, the width of the first cooling channel 40 is approximately equal to the width of the lower flange 1122.

[0047] The inner peripheral wall of the upper annular body 1111 is welded to the top of the outer peripheral wall of the motor stator 30. One end of a plurality of upper flanges 1112 is welded to the outer peripheral wall of the upper annular body 1111 at intervals, and the other end of the upper flanges 1112 is welded to the inner peripheral wall of the outer casing 20. The spacing between each upper flange 1112 is the same as the spacing between each heat dissipation spiral blade 12, that is, the upper flanges 1112 are evenly or unevenly distributed along the circumference of the upper annular body 1111. The outlet of the first cooling channel 40 is formed between the spaced-apart upper flanges 1112.

[0048] The upper flange 1112 is a sheet with a certain width, and its width direction is the direction of the normal of the upper annular body 1111, thereby separating the motor stator 30 from the compressor housing 20 to form a first cooling channel 40. The width of the stator fixing bracket 11 is approximately equal to the width of the upper flange 1112 (the width or thickness of the upper annular body 1111 is relatively thin), that is, the width of the first cooling channel 40 is approximately equal to the width of the upper flange 1112.

[0049] The width of the heat dissipation spiral blade 12 can be approximately equal to the width of the upper flange 1112 and the lower flange 1122.

[0050] In other embodiments, the upper flange 1112 and the upper annular body 1111 can be integrally formed; the lower flange 1122 and the lower annular body 1121 can be integrally formed.

[0051] In summary, the embodiments of this utility model have at least the following beneficial effects: This utility model embodiment provides a compressor heat dissipation structure 10, including a stator fixing frame 11 and heat dissipation spiral blades 12; the stator fixing frame 11 is an annular structure, the motor stator 30 of the compressor is fixed inside the stator fixing frame 11, and the outer casing 20 of the compressor is fixed outside the stator fixing frame 11, so that a first cooling channel 40 is formed between the inner peripheral wall of the outer casing 20 and the outer peripheral wall of the motor stator 30, and the outlet of the first cooling channel 40 is located at the top of the first cooling channel 40; a plurality of heat dissipation spiral blades 12 are arranged at intervals in the first cooling channel 40 and are distributed along the circumference of the motor stator 30. An annular stator support frame 11 can be installed between the motor stator 30 and the compressor housing 20. This not only supports the motor stator 30 but also forms a first cooling channel 40 with a certain width between the motor stator 30 and the housing 20. This adds a heat exchange path inside the compressor, improving the flow of the cooling medium. Furthermore, by installing multiple heat dissipation spiral blades 12 arranged at intervals around the outer periphery of the motor stator 30 within the first cooling channel 40, the cooling medium within the first cooling channel 40 changes from laminar flow to turbulent flow, significantly improving the heat exchange efficiency of the motor stator 30.

[0052] Furthermore, it effectively enhances the motor's heat dissipation capacity in high-temperature environments, ensuring stable compressor operation and preventing overheating-induced shutdowns, thus meeting the compressor's heat dissipation requirements in high-temperature environments. Utilizing the pressure difference generated by the compressor's operation to drive the cooling medium flow eliminates the need for an additional power source and complex cooling oil circuits within the motor. Its simple structural design facilitates manufacturing and demonstrates promising application prospects.

[0053] See also Figure 3 and Figure 4This utility model embodiment also provides a rotary compressor, which includes a housing 20, a motor stator 30, a motor rotor 50, and the compressor heat dissipation structure 10 disclosed in the above embodiment; the outlet of the first cooling channel 40 is connected to the exhaust pipe 80 at the top of the housing 20; the motor rotor 50 is disposed in the middle of the motor stator 30, and a second cooling channel 60 is formed between the outer peripheral wall of the motor rotor 50 and the inner peripheral wall of the motor stator 30, and the outlet of the second cooling channel 60 is connected to the exhaust pipe 80 at the top of the housing 20.

[0054] In this embodiment, the rotary compressor also includes a crankshaft 70 connected to the rotor. By providing the aforementioned compressor heat dissipation structure 10 in the rotary compressor, a first cooling channel 40 is added to the second cooling channel 60. The inlet of the first cooling channel 40 and the inlet of the second cooling channel 60 are connected to the intake pipe of the rotary compressor and the bottom cavity for storing refrigerant oil.

[0055] During the operation of the rotary compressor, the motor rotor 50 rotates at high speed, driving the crankshaft 70 to rotate synchronously. This throws the cooling medium from the bottom of the rotary compressor upwards, creating a pressure difference between the upper and lower chambers of the motor. This pressure difference drives a portion of the cooling medium to flow axially from the lower chamber of the motor through the second cooling channel 60 and the first cooling channel 40 between the motor stator 30 and the motor rotor 50 to the upper chamber. As the cooling medium flows through the first cooling channel 40, it is turbulented by the cooling spiral blades 12, changing from a laminar flow to a turbulent flow, thereby improving the heat exchange efficiency with the surface of the motor stator 30. After heat exchange, the cooling medium is discharged from the exhaust pipe 80 at the top of the outer casing 20 and enters the condenser for circulation.

[0056] Because of the compressor heat dissipation structure 10 included in the above embodiment, the rotary compressor provided in this embodiment has the beneficial effects of improving heat dissipation efficiency, improving heat dissipation capacity in high-temperature environments, avoiding the triggering of protection mechanisms due to excessive temperature, ensuring its continuous and stable operation, and meeting the application requirements in high-temperature environments.

[0057] See also Figure 5 This utility model embodiment also provides a refrigeration device, including an evaporator, a condenser, and a rotary compressor disclosed in the above embodiment; the outlet of the evaporator is connected to the inlet pipe of the rotary compressor, and the inlet of the condenser is connected to the exhaust pipe 80.

[0058] Because it includes the rotary compressor of the above embodiment, the refrigeration equipment provided in this embodiment has the beneficial effects of stable operation and high refrigeration efficiency.

[0059] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this utility model, and these modifications or substitutions should all be covered within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A compressor heat dissipation structure, characterized in that, The compressor includes a stator mounting bracket and cooling spiral blades. The stator mounting bracket is an annular structure. The compressor motor stator is fixed inside the stator mounting bracket, and the compressor housing is fixed outside the stator mounting bracket, so that a first cooling channel is formed between the inner peripheral wall of the housing and the outer peripheral wall of the motor stator. The outlet of the first cooling channel is located at the top of the first cooling channel. A plurality of cooling spiral blades are arranged alternately in the first cooling channel and are distributed along the circumference of the motor stator.

2. The compressor heat dissipation structure according to claim 1, characterized in that, Each of the heat dissipation spiral blades extends along the axial direction of the motor stator.

3. The compressor heat dissipation structure according to claim 1, characterized in that, The multiple heat dissipation spiral blades are unevenly distributed along the circumference of the motor stator.

4. The compressor heat dissipation structure according to claim 1, characterized in that, Multiple heat dissipation spiral blades are evenly distributed along the circumference of the motor stator.

5. The compressor heat dissipation structure according to any one of claims 1 to 4, characterized in that, The heat dissipation spiral blades are provided with micropores.

6. The compressor heat dissipation structure according to claim 1, characterized in that, The stator fixing frame includes an upper fixing frame and a lower fixing frame; the upper fixing frame is fixed to the top of the outer peripheral wall of the motor stator, and the lower fixing frame is fixed to the bottom of the outer peripheral wall of the motor stator.

7. The compressor heat dissipation structure according to claim 6, characterized in that, One end of the heat dissipation spiral blade is fixedly connected to the lower fixed frame, and the other end of the heat dissipation spiral blade is fixedly connected to the upper fixed frame.

8. The compressor heat dissipation structure according to claim 7, characterized in that, The upper fixing frame includes an upper annular body and a plurality of upper flanges fixed on the outer peripheral wall of the upper annular body; the lower fixing frame includes a lower annular body and a plurality of lower flanges fixed on the outer peripheral wall of the lower annular body, the number of upper flanges being the same as the number of heat dissipation spiral blades, and the number of lower flanges being the same as the number of heat dissipation spiral blades; one end of each heat dissipation spiral blade is fixedly connected to the lower flange, and the other end of each heat dissipation spiral blade is fixedly connected to the upper flange.

9. A rotary compressor, characterized in that, The device includes a housing, a motor stator, a motor rotor, and a compressor heat dissipation structure as described in any one of claims 1 to 8; the outlet of the first cooling channel is connected to the exhaust pipe at the top of the housing; the motor rotor is disposed in the middle of the motor stator, and a second cooling channel is formed between the outer peripheral wall of the motor rotor and the inner peripheral wall of the motor stator, and the outlet of the second cooling channel is connected to the exhaust pipe at the top of the housing.

10. A refrigeration device, characterized in that, It includes an evaporator, a condenser, and a rotary compressor as described in claim 9; the outlet of the evaporator is connected to the inlet pipe of the rotary compressor, and the inlet of the condenser is connected to the exhaust pipe.

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