Compressor

Abstract

The invention provides a compressor which comprises a shell, a driving mechanism, a compression mechanism and a control part, the shell is provided with a first cavity, a second cavity and a middle cavity, the driving mechanism and the compression mechanism are at least partially located in the first cavity, the driving mechanism is connected with the compression mechanism, and the control part is electrically connected with the driving mechanism. The control part is at least partially located in the second cavity, the middle cavity is at least partially located between the first cavity and the second cavity, and the middle cavity is communicated with the first cavity. According to the compressor provided by the invention, the first cavity and the second cavity are separated through the middle cavity, the driving mechanism and the compressing mechanism are at least partially located in the first cavity, and the control part is at least partially located in the second cavity, so that the driving mechanism and the compressing mechanism are separated from the control part through the middle cavity; the influence of heating in the operation process of the driving mechanism on heat dissipation of the control part is reduced, and the heat dissipation effect of the control part is improved.

Description

Technical Field

[0001] This application belongs to the field of compressors, and specifically relates to a heat dissipation structure for a compressor. Background Technology

[0002] A compressor is a driven fluid machine that raises low-pressure gas to high-pressure gas. It is the heart of a refrigeration system. It draws in low-temperature, low-pressure refrigerant gas through the intake pipe, compresses it through the compression mechanism driven by the motor, and then discharges high-temperature, high-pressure refrigerant gas through the exhaust pipe, providing power for the refrigeration cycle.

[0003] The operation of the motor requires control by a controller, which generates heat during operation. Poor heat dissipation can easily lead to malfunctions. In related technologies, the chamber containing the controller is adjacent to the chamber containing the motor, separated by only one wall. Although the refrigerant gas drawn in is low-temperature and low-pressure, the motor also generates heat during operation. This heat generated by the motor affects the controller, reducing its heat dissipation efficiency. Summary of the Invention

[0004] This application aims to provide a compressor to improve the heat dissipation effect of the control unit.

[0005] To achieve the above objectives, this application provides a compressor, including a housing, a drive mechanism, a compression mechanism, and a control unit. The housing has a first cavity, a second cavity, and an intermediate cavity. The drive mechanism and the compression mechanism are at least partially located in the first cavity and are connected. The control unit is electrically connected to the drive mechanism and is at least partially located in the second cavity. The intermediate cavity is at least partially located between the first cavity and the second cavity and communicates with the first cavity.

[0006] The compressor provided in this application has a housing having a first cavity, a second cavity, and an intermediate cavity. The intermediate cavity is at least partially located between the first cavity and the second cavity, that is, the first cavity and the second cavity are separated by the intermediate cavity. The drive mechanism and the compression mechanism are at least partially located in the first cavity, and the control unit is at least partially located in the second cavity. This arrangement separates the drive mechanism and the compression mechanism from the control unit through the intermediate cavity, reducing the impact of the heat generated during the operation of the drive mechanism on the heat dissipation of the control unit and improving the heat dissipation effect of the control unit. Attached Figure Description

[0007] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0008] Figure 1 A perspective view of a compressor provided in an embodiment of this application;

[0009] Figure 2 A cross-sectional view of a compressor provided in an embodiment of this application;

[0010] Figure 3 A side view of a compressor provided in an embodiment of this application;

[0011] Figure 4 A perspective view of a compressor provided as an embodiment of this application;

[0012] Figure 5 An exploded view of a compressor provided in an embodiment of this application;

[0013] Figure 6 An exploded view of a compressor provided in an embodiment of this application;

[0014] Figure 7 for Figure 2 A magnified view of section A in the middle circle. Detailed Implementation

[0015] To better understand the technical solution of this application, the embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0016] It should be understood that the described embodiments are merely some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0017] A compressor is a driven fluid machine that raises low-pressure gas to high-pressure gas. It is the heart of a refrigeration system. It draws in low-temperature, low-pressure refrigerant gas through the intake pipe, compresses it using a motor-driven compression mechanism, and then discharges high-temperature, high-pressure refrigerant gas through the exhaust pipe, providing power for the refrigeration cycle. The motor's operation requires a controller, which generates heat during operation, especially in the case of the Insulated Gate Bipolar Transistor (IGBT) transistors. Poor heat dissipation can easily lead to malfunctions. In related technologies, the chamber containing the motor and the chamber containing the controller are separated by only one wall, meaning the heat generated by the motor during operation can affect the controller's heat dissipation. For this reason, please refer to [link to relevant documentation]. Figures 1 to 7This embodiment provides a compressor, including a housing 1, a drive mechanism 2, a compression mechanism 3, and a control unit 4. The housing 1 has a first cavity 11, a second cavity 12, and an intermediate cavity 13. The drive mechanism 2 and the compression mechanism 3 are at least partially located in the first cavity 11 and are connected. The control unit 4 is electrically connected to the drive mechanism 2 and is at least partially located in the second cavity 12. The intermediate cavity 13 is at least partially located between the first cavity 11 and the second cavity 12 and is in communication with the first cavity 11. In this embodiment, the intermediate cavity 13 is at least partially located between the first cavity 11 and the second cavity 12, meaning that the first cavity 11 and the second cavity 12 are separated by the intermediate cavity 13. The drive mechanism 2 and the compression mechanism 3 are at least partially located in the first cavity 11, and the control unit 4 is at least partially located in the second cavity 12. This arrangement separates the drive mechanism 2 and the compression mechanism 3 from the control unit 4 through the intermediate cavity 13, reducing the impact of the heat generated by the drive mechanism 2 during operation on the heat dissipation of the control unit 4. In some embodiments, the control unit 4 is entirely located in the second cavity 12; in other embodiments, the control unit 4 may be partially located inside the second cavity 12 and partially located outside the second cavity 12.

[0018] To further improve the heat dissipation effect on the control unit 4, in this embodiment, the housing 1 has an air inlet 14, which is connected to the intermediate cavity 13. The low-temperature refrigerant gas drawn in from the air inlet 14 first enters the intermediate cavity 13, so that the intermediate cavity 13 maintains a lower temperature than the first cavity 11. The second cavity 12 is adjacent to the intermediate cavity 13, and the coldness of the low-temperature refrigerant in the intermediate cavity 13 can be transferred to the second cavity 12 through the wall between the second cavity 12 and the intermediate cavity 13, thereby dissipating heat from the control unit 4 in the second cavity 12. In addition, the housing 1 also has a through hole 15, which connects the intermediate cavity 13 and the first cavity 11. The low-temperature refrigerant gas drawn in from the air inlet 14 first enters the intermediate cavity 13, and then enters the first cavity 11 through the through hole 15. This ensures that during the operation of the compressor, the low-temperature refrigerant continuously enters the intermediate cavity 13 first and then the first cavity 11, keeping the intermediate cavity 13 in a low-temperature environment. This ensures that the heat generated by the drive mechanism 2 and / or the compression mechanism 3 in the first cavity 11 during operation is not transferred to the control unit 4 in the second cavity 12. At the same time, it also ensures that the coldness of the low-temperature refrigerant in the intermediate cavity 13 can be transferred to the control unit 4 in the second cavity 12 for heat dissipation. The heat dissipation effect is significantly improved, reducing or avoiding the possibility of the control unit 4 malfunctioning due to poor heat dissipation.

[0019] The refrigerant enters the first chamber 11 through the through hole 15, and is then compressed by the compression mechanism 3 driven by the drive mechanism 2 to form a high-temperature, high-pressure refrigerant. The housing 1 has an exhaust port 16, from which the high-temperature, high-pressure refrigerant is discharged. The temperature at the exhaust port 16 is relatively high. Therefore, compared to the exhaust port 16, the intermediate chamber 13 is closer to the air inlet 14, reducing the impact on the temperature of the refrigerant in the intermediate chamber 13 and ensuring the effectiveness of heat dissipation for the control unit 4.

[0020] Please refer again to section 2. The compressor includes a partition wall 10 located between the intermediate cavity 13 and the second cavity 12, i.e., the intermediate cavity 13 and the second cavity 12 are separated by the partition wall 10, which is the wall between the intermediate cavity 13 and the second cavity 12. The control unit 4 is at least partially in contact with the partition wall 10. During compressor operation, since the partition wall 10 is in contact with the low-temperature refrigerant in the intermediate cavity 13, the low-temperature refrigerant in the intermediate cavity 13 can directly transfer its cooling capacity to the partition wall 10, and then transfer it to the control unit 4, which is in contact with the partition wall 10, to dissipate heat from the control unit 4. Specifically, the control unit 4 includes a circuit board 41 and a power module 42. The power module 42 is connected to the circuit board 41, and the circuit board 41 is electrically connected to the drive mechanism 2. The power module 42 is at least partially in contact with the partition wall 10. In this embodiment, the power module 42 includes at least one IGBT unit 421. During operation, the IGBT unit 421 will emit a large amount of heat. If the heat is not dissipated in time, the heat accumulation will easily cause a malfunction, leading to compressor control failure. Therefore, by attaching the power module 42, which needs to dissipate heat in time, to the partition wall 10, it can be ensured that the low-temperature refrigerant in the intermediate cavity 13 can transfer its cooling capacity to the power module 42 through the partition wall 10, so as to dissipate heat from the power module 42 in a timely and effective manner, thereby reducing or avoiding the probability of the power module 42 malfunctioning due to poor heat dissipation.

[0021] Please refer to section 2 again. Figure 5To ensure that the power module 42 can effectively contact the partition wall 10 and that the cooling capacity of the cryogenic refrigerant can be effectively transferred to the power module 42, in some embodiments, the compressor includes a connector 422. The IGBT unit 421 is connected to the partition wall 10 through the connector 422. That is, the connector 422 passes through the IGBT unit 421 and connects to the partition wall 10, pressing the IGBT unit 421 and the partition wall 10 tightly together, increasing the contact area between the IGBT unit 421 and the partition wall 10, thereby improving the heat dissipation effect. In addition, the cooling capacity of the cryogenic refrigerant can also be transferred to the opposite side of the contact surface between the IGBT unit 421 and the partition wall 10 through the connector 422, improving the heat dissipation effect. In this embodiment, the connector 422 is a bolt. To prevent the refrigerant from entering the second cavity 12, the threaded hole connecting the partition wall 10 and the bolt is a blind hole, not a through hole, which can prevent the refrigerant from entering the second cavity 12 through the gap between the bolt and the threaded hole. In other embodiments, the compressor includes a heat conduction section 423, through which the IGBT unit 421 is connected to the partition wall 10. The heat conduction section 423 conducts the cold energy of the low-temperature refrigerant to the IGBT unit 421, thus effectively dissipating heat. The heat conduction section 423 includes one or a combination of thermal paste, a thermally conductive sheet, and a thermally conductive pad. The heat conduction section 423 is flexible when applied or attached. Located between the IGBT unit 421 and the partition wall 10, after applying thermal paste or attaching a thermally conductive sheet or pad to the surface of the IGBT unit 421 and attaching it to the partition wall 10, the heat conduction section 423 can fully utilize its flexibility to fill the gap between the IGBT unit 421 and the partition wall 10, allowing the surface of the IGBT unit 421 to make sufficient and effective contact, thereby improving the heat dissipation effect. Specifically, thermal paste can be thermal grease or thermal silicone, thermal pad can be thermal grease sheet or thermal silicone sheet, and thermal pad can be thermal grease pad or thermal silicone sheet.

[0022] To further improve heat exchange efficiency and heat dissipation, please refer again. Figure 2 and Figure 6The compressor includes fins 10a connected to the partition wall 10. The fins 10a are located within the intermediate cavity 13. By setting the fins 10a, the contact area with the cryogenic refrigerant is increased, improving heat exchange efficiency and effectiveness. The cooling capacity of the cryogenic refrigerant can be transferred to the partition wall 10 through the fins 10a, and then to the power module 42. The heat dissipated by the power module 42 can also be transferred to the fins 10a through the partition wall 10. The refrigerant flowing through the fins 10a can carry away the heat on the fins 10a, achieving rapid and efficient heat dissipation. This embodiment does not specifically limit the connection method between the fins 10a and the partition wall 10; it can be connected by welding, bonding, or integral molding, such as by metal powder injection molding or casting.

[0023] Please see Figure 2 and Figure 3 In the above embodiment, the housing 1 includes a cylindrical body 17 and a box body 18. The cylindrical body 17 includes a cylindrical wall 17a, and the through hole 15 is located in the cylindrical wall 17a. The housing 1 includes a connecting wall 17b, which connects the cylindrical wall 17a and the box body 18. In other words, the intermediate cavity 13 surrounds the cylindrical wall 17a, the connecting wall 17b, and the box body 18. Specifically, the box body 18 includes a connecting box 18a and a cover 18b. The connecting box 18a is connected to the connecting wall 17b, and the cover 18b is connected to the connecting box 18a. In this embodiment, the depth of the cover 18b and the connecting box 18a is not specifically limited. The depth of the connecting box 18a can be greater than the depth of the cover 18b, or the depth of the cover 18b can be greater than the depth of the connecting box 18a, or the depth of the connecting box 18a can be equal to the depth of the cover 18b. In some embodiments, the connecting wall 17b can be a single component, which is then assembled to connect to the cylindrical wall 17a and the box body 18, and a sealing structure (not shown in the figure) is provided for sealing. This embodiment does not specifically limit the connection method; it can be fastener connection, bonding, snap-fit, welding, etc. In other embodiments, the connecting wall 17b and the cylindrical wall 17a are integrally formed, for example, by welding, metal powder injection molding, or casting. Then, during assembly, the connecting wall 17b is connected to the box body 18. In still other embodiments, the connecting wall 17b and the connecting box 18a are integrally formed, similarly by metal powder injection molding or casting, and then during assembly, the connecting wall 17b is connected to the cylindrical wall 17a. In this embodiment, the connecting box 18a includes the partition wall 10, which is integral with the fins 10a. That is, the partition wall 10 is part of the wall of the connecting box 18a, and the fins 10a are integral with the connecting box 18a. In this embodiment, the box body 18 is provided with a connector mounting port for connection to the circuit board 41.

[0024] In some embodiments described above, the extending direction of the connecting wall 17b is consistent with the distribution direction of the driving mechanism 2 and the compression mechanism 3, which is not shown in the figure.

[0025] In some embodiments described above, the connecting wall 17b extends from the cylinder wall 17a in a direction away from the first cavity 11. Specifically, the connecting wall 17b extends from the cylinder wall 17a along a first direction F1 in a direction away from the first cavity 11. The first direction F1 forms an angle θ with the distribution directions of the drive mechanism 2 and the compression mechanism 3, where 0° < angle θ ≤ 90°. In other words, the extending direction of the connecting wall 17b forms an angle with the distribution directions of the drive mechanism 2 and the compression mechanism 3. The connecting wall 17b does not extend in the distribution directions of the drive mechanism 2 and the compression mechanism 3, thus reducing the overall length of the compressor and making the compressor more compact. More specifically, the first direction F1 is perpendicular to the distribution directions of the drive mechanism 2 and the compression mechanism 3, meaning the extending direction of the connecting wall 17b is perpendicular to the distribution directions of the drive mechanism 2 and the compression mechanism 3. This allows the installation and heat dissipation requirements of the control unit 4 to remain unchanged while maintaining the overall length of the compressor, resulting in a more compact structure. In this embodiment, the connecting wall 17b includes a side wall 17b1, which is parallel to the distribution direction of the drive mechanism 2 and the compression mechanism 3. The air inlet 14 is located on the side wall 17b1. In a projection plane P1 that is parallel to the side wall 17b1 and directly in view of the cylinder wall 17a, the projected area of ​​the air inlet 14 in the projection plane P1 is at least partially located within the projected area of ​​the cylinder wall 17a in the projection plane P1. Specifically, the projected area of ​​the air inlet 14 in the projection plane P1 is entirely located within the projected area of ​​the cylinder wall 17a in the projection plane P1. This arrangement reduces the extension length of the connecting wall 17b, making the compressor structure more compact and reducing material costs. More specifically, the air inlet 14 is directly opposite the cylinder wall 17a, so that the cylinder wall 17a can act as a buffer to reduce the impact intensity of the refrigerant on the housing 18, thereby improving the connection stability between the connecting wall 17b and the housing 18, and between the connecting wall 17b and the cylinder wall 17a, and thus improving the overall structural strength of the compressor.

[0026] In the above embodiment, the cylinder wall 17a has an oil passage 17a1, which connects the intermediate cavity 13 and the first cavity 11. The connecting wall 17b includes a bottom wall 17b2 and a top wall 17b3, which are respectively connected to the two ends of the side wall 17b1 along the distribution direction of the drive mechanism 2 and the compression mechanism 3. Compared to the oil passage 17a1, the air inlet 14 is further away from the bottom wall 17b2; in other words, the oil passage 17a1 is closer to the bottom wall 17b2. The first cavity 11 includes an oil storage chamber 11a, and compared to the top wall 17b3, the bottom wall 17b2 is closer to the oil storage chamber 11a. The refrigerant entering the intermediate cavity 13 from the air inlet 14 may contain lubricating oil. With this configuration, as the refrigerant passes through the through hole 15, some lubricating oil accumulates, increases in volume, and converges towards the bottom wall 17b2. When the oil level in the oil reservoir 11a is not higher than the oil passage 17a1, the lubricating oil in the intermediate cavity 13 can pass through the oil passage 17a1 to the oil reservoir 11a. When the oil level in the oil reservoir 11a is higher than the oil passage 17a1, the lubricating oil in the intermediate cavity 13 is temporarily stored in the intermediate cavity 13.

[0027] To prevent excessive oil accumulation in the intermediate cavity 13, which could lead to excessive lubricating oil being carried by the refrigerant through the through-hole 15 and consequently excessive lubricating oil entering the compression mechanism, the oil through-hole 17a1 is connected to the bottom wall 17b2. Furthermore, a distance L is provided between the oil through-hole 17a1 and the bottom surface of the housing 1 in the oil storage chamber 11a to reduce lubricating oil accumulation in the intermediate cavity 13. Further, the oil through-hole 17a1 is inclined towards the bottom surface of the housing 1 in the oil storage chamber 11a to facilitate the flow of lubricating oil from the intermediate cavity 13 to the oil storage chamber 11a. In this embodiment, the distance L is not specifically limited and can be set according to requirements.

[0028] Furthermore, during the compression and refrigeration process, refrigerant continuously enters from the inlet 14. To prevent lubricating oil from converging on the bottom wall 17b2 or from being carried back into the first chamber 11 by the refrigerant gas entering later, thus entering the compression mechanism and causing problems such as reduced compression efficiency, in this embodiment, the compressor includes a blocking part 8. The blocking part 8 is located in the intermediate chamber 13, and the blocking part 8 is connected to the housing 1 at the cavity wall of the intermediate chamber 13. The cavity wall can be one or more of the side wall 17b1, cylinder wall 17a, partition wall 10, top wall 17b3, and bottom wall 17b2. Specifically, the blocking part 8 includes a first baffle 81, the intermediate cavity 13 includes an upper cavity 13a, a lower cavity 13b, and a channel 13c, the channel 13c connecting the upper cavity 13a and the lower cavity 13b, the first baffle 81 being located between the upper cavity 13a and the lower cavity 13b, and the air inlet 14 communicating with the upper cavity 13a. In other words, the first baffle 81 divides the intermediate cavity 13 into the upper cavity 13a and the lower cavity 13b, and the first baffle 81 also provides a channel 13c. Thus, refrigerant enters the upper cavity 13a from the air inlet 14, and lubricating oil gathers into oil droplets and enters the lower cavity 13b from the channel 13c. Subsequent refrigerant will not carry away the lubricating oil in the lower cavity 13b, preventing a large amount of lubricating oil from entering the first cavity 11, and consequently preventing a large amount of lubricating oil from entering the compression mechanism, thus helping to improve the compression efficiency of the compressor. The first baffle 81 has the channel 13c, and / or the blocking part 8 has the channel 13c between it and at least one of the side wall 17b1, the cylinder wall 17a, and the partition wall 10. Similarly, to facilitate oil drainage, the surface of the blocking part 8 facing the upper cavity 13a is inclined towards the channel 13c. In addition, the blocking part 8 includes a second baffle 82, which is located near the other side wall 17b1 opposite to the side wall 17b1 where the air inlet 14 is located. The second baffle 82 is connected to the first baffle 81. Besides the aforementioned oil-blocking effect, the first baffle 81 and the second baffle 82 work together to guide the refrigerant from the air inlet 14 to the through hole 15, preventing the refrigerant from diffusing in the intermediate cavity 13.Specifically, the fin 10a is located between the second baffle 82 and the side wall 17b1 where the air inlet 14 is located; the cylinder wall 17a also has a connecting hole 200, the compressor has a flow gap 10c, the flow gap 10c extends from the connecting hole 200 toward the through hole 15, the flow gap 10c is located between adjacent fins 10a, and / or, the flow gap 10c is located between the fin 10a and the side wall 17b1, and / or, the flow gap 10c is located between the fin 10a and the second baffle 82; the connecting hole 200 connects the intermediate cavity 13 and the first cavity 11, the connecting hole 200 is near the end of the drive mechanism 2 facing the oil storage chamber 11a, more specifically, the connecting hole 200 connects the upper cavity 13a and the chamber where the drive mechanism 2 is located. With this configuration, after the refrigerant enters through the inlet 14, it is blocked by the first baffle 81 and the second baffle 82. The refrigerant flows from the flow gap 10c to the through hole 15, and a portion of the refrigerant flows from the connecting hole 200 to the chamber where the drive mechanism 2 is located, thereby cooling the drive mechanism 2.

[0029] In the above embodiment, the compressor includes a connector 5, which is mounted on the partition wall 10. The partition wall 10 has an electrical interface 10b, through which the connector 5 partially passes. The connector 5 connects the circuit board 41 and the drive mechanism 2. Specifically, the connector 5 is connected to the drive mechanism 2 via a wiring portion (not shown in the figure). During compressor operation, the circuit board 41 receives signals from the outside, processes them, and transmits them to the drive mechanism 2 via the connector 5. The drive mechanism 2 receives the signals and responds accordingly, for example, by adjusting the output speed of the drive mechanism 2. In this embodiment, the connector 5 and the wiring portion can be connected through the space of the through hole 15, reducing the need for additional specific openings in the cylinder 17.

[0030] Please refer to it again. Figure 2In the above embodiment, the drive mechanism 2 includes a motor part 21 and a rotating shaft part 22. The motor part 21 is installed inside the cylinder 17 and is connected to the rotating shaft part 22. The compression mechanism 3 includes a moving scroll 31 and a stationary scroll 32. The compressor includes a bearing 9, and the rotating shaft part 22 is connected to the moving scroll 31 through the bearing 9. The compressor has a compression chamber 30, which at least partially surrounds the moving scroll 31 and the stationary scroll 32. In addition, the compressor includes a support part 1a, which is connected to the cylinder 17. The moving scroll 31 contacts the support part 1a. The stationary scroll 32 includes a stationary end plate 32a, and the moving scroll 31 is located between the support part 1a and the stationary end plate 32a. The housing 1 also includes an end cover 1b, which is connected to the end of the cylinder 17 away from the support part 1a. The oil storage chamber 11a is close to the end cover 1b. The support portion 1a has at least one vent hole 1a1, which communicates with the opening 61. The compressor also has a suction chamber 100, which is located outside the compression chamber 30. Specifically, the suction chamber 100 is located outside the compression chamber 30 along the radial direction of the stationary end plate 32a, and the vent hole 1a1 communicates with the suction chamber 100. The housing 1 includes an exhaust cover 19, and the stationary scroll 32 is connected to the exhaust cover 19. The compressor has an exhaust chamber 190, which is at least partially enclosed between the stationary scroll 32 and the exhaust cover 19. The exhaust chamber 190 communicates with the exhaust port 16, and the compression chamber 30 communicates with the exhaust chamber 190.

[0031] During the compression of the refrigerant, the motor unit 21 receives a signal from the control unit 4 and drives the rotating shaft unit 22 to output a rotational speed. The part of the rotating shaft unit 22 connected to the moving scroll 31 is eccentrically positioned, and the moving scroll 31 is connected to the support unit 1a through an anti-rotation structure, or the moving scroll 31 is connected to the stationary scroll 32 through an anti-rotation structure. Therefore, the rotating shaft unit 22 drives the moving scroll 31 to rotate in a plane around the base circle center of the stationary scroll through the bearing 9, and the profile walls of the moving scroll 31 and the stationary scroll 32 mesh. The refrigerant from outside the compressor enters the intermediate cavity 13 through the inlet 14. The low-temperature refrigerant dissipates heat to at least part of the control unit 4 through the partition wall 10, and then enters the first cavity 11 through the through hole 15, and enters the suction cavity 100 through the vent hole 1a1 on the support unit 1a. As the rotating shaft 22 rotates eccentrically, the moving scroll 31 moves in a plane relative to the stationary scroll 32, and the refrigerant is drawn in from the suction chamber 100. The refrigerant is gradually compressed from the outside to the inside in the several crescent-shaped compression chambers 30 formed by the meshing of the moving scroll 31 and the stationary scroll 32, and then discharged from the central compression chamber 30 into the exhaust chamber 190 between the stationary scroll 32 and the exhaust cover 19, and finally discharged from the exhaust port 16 outside the compressor.

[0032] Some of the technical implementation methods described above can be combined or replaced.

[0033] The technical principles of this application have been described above in conjunction with specific embodiments. However, it should be noted that these descriptions are merely for explaining the principles of this application and should not be construed as limiting the scope of protection of this application in any way. Based on this explanation, other specific embodiments or equivalent substitutions of this application that can be conceived by those skilled in the art without creative effort will fall within the scope of protection of this application.

Claims

1. A compressor characterized by: The device includes a housing, a drive mechanism, a compression mechanism, and a control unit. The housing has a first cavity, a second cavity, and an intermediate cavity. The drive mechanism and the compression mechanism are at least partially located in the first cavity and are connected. The control unit is electrically connected to the drive mechanism and is at least partially located in the second cavity. The intermediate cavity is at least partially located between the first cavity and the second cavity and is in communication with the first cavity.

2. The compressor of claim 1, wherein: The housing has an air inlet that communicates with the intermediate cavity; the housing also has a through hole that communicates with the intermediate cavity and the first cavity. The housing has an exhaust port, and the intermediate cavity is closer to the air inlet than the exhaust port.

3. The compressor of claim 2, wherein: The compressor includes a partition wall located between the intermediate cavity and the second cavity, and the control unit is at least partially attached to the partition wall; The control unit includes a circuit board and a power module. The power module is connected to the circuit board, and the circuit board is electrically connected to the drive mechanism. The power module is at least partially attached to the partition wall. The power module includes at least one IGBT unit; The compressor includes a connector, and the IGBT unit is connected to the partition wall through the connector. Alternatively, the compressor includes a heat conduction section, and the IGBT unit is connected to the partition wall through the heat conduction section. The heat conduction section includes one or more of the following: thermal paste, thermal pad, and thermal pad.

4. The compressor of claim 3, wherein: The compressor includes fins connected to the partition wall and located within the intermediate cavity.

5. The compressor of claim 4, wherein: The housing includes a cylindrical body and a box body, the cylindrical body includes a cylindrical wall, and the through hole is located in the cylindrical wall; The housing includes a connecting wall that connects the cylindrical wall and the box body, and the connecting wall and the cylindrical wall are integral parts; the box body includes a connecting box and a cover, the connecting box being connected to the connecting wall, and the cover being connected to the connecting box; The connecting box includes the partition wall, and the partition wall and the fin are integral parts.

6. The compressor of claim 5, wherein: The connecting wall extends from the cylinder wall along a first direction away from the first cavity, wherein the first direction forms an angle with the distribution direction of the driving mechanism and the compression mechanism, where 0° < angle ≤ 90°; the connecting wall includes a side wall, which is parallel to the distribution direction of the driving mechanism and the compression mechanism, and the air inlet is located on the side wall. In a projection plane that is parallel to the side wall and directly in view of the cylinder wall, the projected area of ​​the air inlet in the projection plane is at least partially located within the projected area of ​​the cylinder wall in the projection plane, and the air inlet is directly opposite the cylinder wall.

7. The compressor of claim 6, wherein: The cylinder wall has an oil passage hole that connects the intermediate cavity and the first cavity. The connecting wall includes a bottom wall and a top wall. The bottom wall and the top wall are respectively connected to the two ends of the side wall along the distribution direction of the drive mechanism and the compression mechanism. Compared to the oil passage hole, the air inlet is further away from the bottom wall. The oil passage hole is connected to the bottom wall. The first cavity includes an oil storage chamber. Compared to the top wall, the bottom wall is closer to the oil storage chamber. There is a gap between the oil passage hole and the bottom surface of the housing in the oil storage chamber. The oil passage hole is inclined towards the bottom surface of the housing in the oil storage chamber. The compressor includes a blocking part located in the intermediate cavity. The blocking part is connected to the housing on the cavity wall of the intermediate cavity. The blocking part includes a first baffle. The intermediate cavity includes an upper cavity, a lower cavity, and a channel. The channel connects the upper cavity and the lower cavity. The first baffle is located between the upper cavity and the lower cavity. The air inlet is connected to the upper cavity. The blocking portion has the channel, and / or the blocking portion has the channel between itself and at least one of the side wall, cylinder wall and partition wall; the surface of the blocking portion facing the upper cavity is inclined toward the channel; The blocking part includes a second baffle, which is located near a sidewall opposite to the sidewall where the air inlet is located, and is connected to the first baffle; the fins are located between the second baffle and the sidewall where the air inlet is located; the cylinder wall also has a through hole, and the compressor has a flow gap that extends from the through hole toward the through hole. The flow gap is located between adjacent fins, and / or the flow gap is located between the fin and the sidewall, and / or the flow gap is located between the fin and the second baffle; The connecting hole connects the intermediate cavity and the first cavity, and the connecting hole is located near the end of the drive mechanism facing the oil storage chamber.

8. The compressor according to any one of claims 5 to 7, characterized in that: The compressor includes a connector mounted on the partition wall, which has an electrical interface. The connector portion passes through the electrical interface and connects to a circuit board and a drive mechanism.

9. The compressor according to any one of claims 5 to 7, characterized in that: The drive mechanism includes a motor part and a rotating shaft part. The motor part is installed inside the cylinder and is connected to the rotating shaft part. The compression mechanism includes a moving scroll and a stationary scroll, and the compressor has a compression chamber that is at least partially enclosed between the moving scroll and the stationary scroll; the compressor includes a bearing, and the rotating shaft is connected to the moving scroll via the bearing; The compressor includes a support portion connected to the cylinder body, a moving scroll contacting the support portion, a stationary scroll including a stationary end plate, and the moving scroll located between the support portion and the stationary end plate; the housing also includes an end cover connected to the end of the cylinder body away from the support portion. The support portion has at least one vent hole that is connected to the opening. The compressor also has a suction chamber located outside the compression chamber, and the vent hole is connected to the suction chamber.

10. The compressor according to claim 9, characterized in that: The housing includes an exhaust cover, the stationary volute is connected to the exhaust cover, the compressor has an exhaust chamber, the exhaust chamber is at least partially enclosed between the stationary volute and the exhaust cover, the exhaust chamber is in communication with the exhaust port, and the compression chamber is in communication with the exhaust chamber.

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