Compressor assembly and hvac system

Abstract

A compressor assembly and a heating and ventilation system. The compressor assembly comprises: a compressor body comprising a compressor body and a cover body, the cover body being arranged on the compressor body and enclosing a sealed cavity with the compressor body, the compressor body having a first cooling flow channel and a second cooling flow channel; a first cooling device arranged in the sealed cavity and having a third cooling flow channel, the first cooling flow channel, the third cooling flow channel and the second cooling flow channel being sequentially communicated; and a first heat generating module arranged in the sealed cavity and arranged on the first cooling device, the first heat generating module comprising a frequency conversion module and / or a rectification module, and the first cooling device is arranged to cool the first heat generating module. The first cooling device and the first heat generating module are integrated on the compressor body. Compared with the technical solution that the first cooling device and the first heat generating module are arranged separately from the compressor body, the compressor assembly is more compact and occupies less space, and therefore the heating and ventilation system having the compressor assembly occupies less space.

Description

Technical Field

[0001] This invention belongs to the field of heating, ventilation and air conditioning equipment, and more specifically, relates to a compressor assembly and a heating, ventilation and air conditioning system. Background Technology

[0002] A heating, ventilation, and air conditioning (HVAC) system includes a compressor, an evaporator, an electronic expansion valve, a condenser, and an electronic control unit. The electronic control unit includes components such as a frequency converter module and a rectifier module. The compressor, evaporator, electronic expansion valve, and condenser are connected in sequence to form a refrigerant flow path.

[0003] The HVAC system occupies a large space, and how to reduce the space occupied by the HVAC system has always been a technical problem that those skilled in the art have been committed to solving. Summary of the Invention

[0004] This invention provides a compressor assembly for use in HVAC systems, which can reduce the space occupied by HVAC systems.

[0005] This invention also provides a heating, ventilation, and air conditioning system.

[0006] The compressor assembly provided in this embodiment of the invention includes: a compressor body, comprising a compressor body and a cover, the cover being located outside the compressor body and disposed on the compressor body, and the cover and the compressor body forming a sealed cavity, the compressor body having a first cooling channel and a second cooling channel; a first cooling device disposed within the sealed cavity and having a third cooling channel, the first cooling channel, the third cooling channel and the second cooling channel being sequentially connected; and a first heating module located within the sealed cavity and disposed on the first cooling device, the first heating module including at least one of a frequency converter module and a rectifier module, the first cooling device being configured to cool and reduce the temperature of the first heating module.

[0007] In some exemplary embodiments, the first cooling device includes a first connecting channel, a cooling plate, and a second connecting channel arranged sequentially. The cooling plate has a plurality of flow channels arranged in parallel. The first cooling channel, the first connecting channel, the plurality of flow channels, the second connecting channel, and the second cooling channel are sequentially connected. The third cooling channel includes the first connecting channel, the plurality of flow channels, and the second connecting channel.

[0008] In some exemplary embodiments, one of the first connecting channel and the second connecting channel includes a manifold and a head installed at the end of the manifold, and the other of the first connecting channel and the second connecting channel includes a branch pipe and a head installed at the end of the branch pipe.

[0009] In some exemplary embodiments, the compressor assembly further includes: a phase change cooling device located within the sealed cavity, wherein the evaporation section of the phase change cooling device is spaced apart from the first cooling device and the condensation section is disposed within the first cooling device, and the phase change cooling device is configured to transfer heat from inside the sealed cavity to the first cooling device.

[0010] In some exemplary embodiments, the phase change cooling device includes: a phase change tube having an evaporation section spaced apart from the first cooling device and a condensation section disposed in the first cooling device; fins disposed in the evaporation section of the phase change tube; and a substrate disposed in the first cooling device, wherein the condensation section of the phase change tube is disposed in the substrate.

[0011] In some exemplary embodiments, the first heating module includes the frequency converter module and the rectifier module, and the frequency converter module and the rectifier module are located on both sides of the phase change cooling device.

[0012] In some exemplary embodiments, the compressor assembly further includes a second heating module disposed within the sealed cavity.

[0013] In some exemplary embodiments, the second heating module includes an AC power module and a DC power module, which are located on opposite sides of the first cooling device.

[0014] In some exemplary embodiments, the protection level of the sealed cavity is not lower than IP67.

[0015] In some exemplary embodiments, the compressor body has a fourth cooling channel configured to cool the motor of the compressor body.

[0016] In some exemplary embodiments, the compressor body is a magnetically levitated compressor body.

[0017] In some exemplary embodiments, one of the first cooling channel and the second cooling channel is located in the cover and the other is located in the compressor body, and the inlet of the fourth cooling channel is connected to the outlet of the first cooling channel.

[0018] The HVAC system proposed in this embodiment of the invention includes a first heat exchanger, a throttling component, a second heat exchanger, and a compressor assembly as described in any of the above embodiments. The first heat exchanger, the throttling component, the second heat exchanger, and the compressor body are sequentially connected to form a refrigerant flow path. One of the first cooling channel and the second cooling channel is connected to the outlet of the first heat exchanger, and the other is connected to the inlet of the second heat exchanger.

[0019] The compressor assembly provided in this embodiment of the invention integrates the first cooling device and the first heating module on the compressor body. Compared with the technical solution where the first cooling device and the first heating module are separately set from the compressor body, the compressor assembly is more compact and occupies less space. Therefore, when applied to a heating and ventilation system, the compressor assembly can reduce the space occupied by the heating and ventilation system. Furthermore, the first cooling device cools and lowers the temperature of the first heating module, preventing the first heating module from overheating and being damaged in the sealed cavity due to the inability to quickly dissipate heat to the outside.

[0020] Other features and advantages of the invention will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures particularly pointed out in the description and the drawings. Attached Figure Description

[0021] The accompanying drawings are provided to further understand the technical solutions of the present invention and constitute a part of the specification. They are used together with the embodiments of this application to explain the technical solutions of the present invention and do not constitute a limitation on the technical solutions of the present invention.

[0022] Figure 1 Schematic block diagrams of the structure of a heating, ventilation, and air conditioning system provided in some embodiments;

[0023] Figure 2 for Figure 1 A three-dimensional structural diagram of the main body of the compressor;

[0024] Figure 3 for Figure 2 The diagram shows the three-dimensional structure of the compressor body after the cover is removed.

[0025] Figure 4 for Figure 2 The diagram shows a three-dimensional structure of the compressor body after removing the cover and phase change cooling device.

[0026] Figure 5 for Figure 3 A three-dimensional structural diagram of the first cooling device, phase change cooling device, frequency converter module and rectifier module after assembly;

[0027] Figure 6 for Figure 5 A three-dimensional structural diagram of the first cooling device and the phase change cooling device after assembly;

[0028] Figure 7 for Figure 6 Exploded view of the first cooling device in the middle;

[0029] Figure 8 for Figure 7 Front view of the intermediate cooling plate;

[0030] Figure 9 for Figure 6 A three-dimensional structural diagram of a phase change cooling device;

[0031] Figure 10 for Figure 1 A cross-sectional view of an example compressor assembly is shown; the internal structure of the compressor body is not shown.

[0032] The correspondence between the reference numerals and the component names is as follows:

[0033] 100 First heat exchanger, 200 Throttling component, 300 Second heat exchanger, 400 Compressor assembly, 410 Compressor body, 411 Second cooling channel, 412 Fourth cooling channel, 413 Combining channel, 420 Cover, 421 First cooling channel, 430 First cooling device, 431 Cooling plate, 4311 Flow channel, 432 Manifold, 433 Branch pipe, 434 End cap, 435 End cap, 441 Frequency converter module, 442 Rectifier module, 450 Phase change cooling device, 451 Phase change tube, 452 Fins, 453 Base plate, 461 AC power module, 462 DC power module. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of the present invention clearer, the embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features described in this application can be arbitrarily combined with each other.

[0035] The HVAC system proposed in the embodiments of the present invention, such as Figure 1 As shown, it includes a first heat exchanger 100, a throttling device 200, a second heat exchanger 300, and a compressor assembly 400. Figures 1 to 6 As shown, the compressor assembly 400 includes: a compressor body, the compressor body including a compressor body 410 and a cover 420, the cover 420 being located outside the compressor body 410 and mounted on the compressor body 410, and the cover 420 and the compressor body 410 forming a sealed cavity, the compressor body having a first cooling flow channel 421 (e.g., Figure 10 (as shown) and the second cooling channel 411 (as shown) Figure 10(As shown); a first cooling device 430, which is disposed in a sealed cavity and has a third cooling channel, wherein the first cooling channel 421, the third cooling channel, and the second cooling channel 411 are sequentially connected; and a first heating module, which is located in the sealed cavity and disposed in the first cooling device 430, wherein the first heating module includes at least one of a frequency converter module 441 and a rectifier module 442, and the first cooling device 430 is configured to cool the first heating module. A first heat exchanger 100, a throttling component 200, a second heat exchanger 300, and a compressor body 410 are sequentially connected to form a refrigerant flow path, wherein one of the first cooling channel 421 and the second cooling channel 411 is connected to the outlet of the first heat exchanger 100, and the other is connected to the inlet of the second heat exchanger 300.

[0036] This HVAC system integrates the first cooling device 430 and the first heating module onto the compressor body 410. Compared to the technical solution where the first cooling device 430 and the first heating module are separately set from the compressor body 410, this HVAC system is more compact and occupies less space. Furthermore, the refrigerant cools the first heating module through the first cooling device 430, preventing the first heating module from overheating and being damaged in the sealed cavity due to the inability to quickly dissipate heat to the outside.

[0037] To better understand the present invention, the following detailed description will be based on the example of a first heat exchanger 100 being a condenser, a second heat exchanger 300 being an evaporator, the inlet of the first cooling channel 421 being connected to the outlet of the condenser, and the outlet of the second cooling channel 411 being connected to the inlet of the evaporator.

[0038] In one embodiment, such as Figures 2 to 5 As shown, the first heating module includes a frequency converter module 441 and a rectifier module 442. Since both the frequency converter module 441 and the rectifier module 442 are high-power first heating modules, and both are located inside a sealed cavity, the protection level of the sealed cavity can be set to no less than IP67. This allows the cooling temperature of the first cooling device 430 to be set lower, enabling more efficient heat dissipation and cooling of the frequency converter module 441 and the rectifier module 442. Furthermore, during the heat dissipation and cooling process of the frequency converter module 441 and the rectifier module 442, no condensate will be generated inside the sealed cavity because the protection level of the sealed cavity is no less than IP67.

[0039] Alternatively, no throttling component may be provided between the inlet of the first cooling channel 421 and the outlet of the condenser, thus saving the cost of at least one throttling component; or a capillary tube may be provided between the inlet of the first cooling channel 421 and the outlet of the condenser, the cost of which is lower than that of an electronic expansion valve, thereby reducing the production cost of the HVAC system; or an electronic expansion valve may be provided between the inlet of the first cooling channel 421 and the outlet of the condenser, etc. All of the above can achieve the purpose of this application, and their purpose has not departed from the design concept of this invention, and will not be elaborated here, and should all fall within the protection scope of this application.

[0040] The IP67 protection rating is defined as "completely preventing dust ingress, with a water resistance depth of 1 meter for 30 minutes". In other words, the IP67 protection rating means that the product can withstand being submerged in 1 meter of water for 30 minutes without any water penetration.

[0041] In one embodiment, such as Figures 3 to 5 As shown, the frequency converter module 441 includes transistors, such as insulated gate bipolar transistors; the rectifier module 442 includes rectifiers, such as silicon controlled rectifiers.

[0042] In some examples, such as Figures 6 to 8 As shown, the first cooling device 430 includes a first connecting channel, a cooling plate 431 and a second connecting channel, which are sequentially provided with a cover 420. The cooling plate 431 has a plurality of flow channels 4311 arranged in parallel. The first cooling channel 421, the first connecting channel, the plurality of flow channels 4311, the second connecting channel and the second cooling channel 411 are sequentially connected. The third cooling channel includes the first connecting channel, the plurality of flow channels 4311 and the second connecting channel.

[0043] In this design, no throttling device is installed between the inlet of the first cooling channel 421 and the outlet of the condenser. The diameter of each flow channel 4311 is set to 3-4 mm, and the number of multiple flow channels 4311 is set to 20-40. During refrigeration operation, a portion of the medium-temperature high-pressure refrigerant flowing out of the condenser outlet flows into the evaporator through the first cooling channel 421, the first connecting channel, multiple flow channels 4311, the second connecting channel, and the second cooling channel 411. A portion of the medium-temperature high-pressure refrigerant flowing out of the condenser outlet absorbs heat generated by the frequency converter module 441 and the rectifier module 442 as it passes through the cooling plate 431, thereby cooling the frequency converter module 441 and the rectifier module 442. During refrigeration operation, another portion of the medium-temperature high-pressure refrigerant flowing out of the condenser outlet flows to the evaporator through the throttling device 200.

[0044] In one embodiment, such as Figure 7As shown, the second connecting channel includes a manifold 432 and a cap 434 installed at the end of the manifold 432, the cap 434 connecting the manifold 432 and the second cooling channel 411; the first connecting channel includes a branch pipe 433 and a cap 435 installed at the end of the branch pipe 433, the cap 435 connecting the branch pipe 433 and the first cooling channel 421; multiple flow channels 4311 are arranged in parallel and connect the branch pipe 433 and the manifold 432. Alternatively, multiple flow channels 4311 can be arranged in series to achieve the purpose of this application. The intent remains the same as the design concept of this invention, and will not be elaborated further here, but should fall within the protection scope of this application.

[0045] Among them, such as Figures 5 to 8 As shown, a portion of the multiple flow channels 4311 corresponds to the frequency converter module 441, and another portion of the multiple flow channels 4311 corresponds to the rectifier module 442. This results in better cooling of the frequency converter module 441 and the rectifier module 442.

[0046] In some examples, such as Figure 3 , Figure 5 , Figure 6 and Figure 9 As shown, the compressor assembly 400 further includes: a phase change cooling device 450 (the phase change cooling device 450 is a second cooling device), the phase change cooling device 450 is located in the sealed cavity, the evaporation section of the phase change cooling device 450 is spaced apart from the cooling plate 431, the condensation section of the phase change cooling device 450 is located on the cooling plate 431, and the phase change cooling device 450 is configured to transfer the heat inside the sealed cavity to the cooling plate 431.

[0047] The air temperature inside the sealed cavity is relatively high. The evaporation section of the phase change cooling device 450 absorbs the heat of the air inside the sealed cavity. The condensation section of the phase change cooling device 450 transfers the heat absorbed by the evaporation section to the cooling plate 431. The heat is absorbed and carried away by the refrigerant flowing inside the cooling plate 431, thereby achieving heat dissipation and cooling of the air inside the sealed cavity.

[0048] In one embodiment, such as Figure 6 and Figure 9As shown, the phase change cooling device 450 includes: a phase change tube 451, the evaporation section of the phase change tube 451 being spaced apart from the cooling plate 431, and the condensation section of the phase change tube 451 being disposed on the cooling plate 431; fins 452, the fins 452 being disposed on the evaporation section of the phase change tube 451, the fins 452 absorbing heat from the air inside the sealed cavity and transferring it to the evaporation section of the phase change tube 451; and a substrate 453, the substrate 453 being disposed in the first cooling device 430, the condensation section of the phase change tube 451 being disposed on the substrate 453, the condensation section of the phase change tube 451 transferring the heat absorbed by the evaporation section of the phase change tube 451 to the substrate 453, the refrigerant flowing in the cooling plate 431 absorbing heat from the substrate 453 through the cooling plate 431, and then the refrigerant flowing in the cooling plate 431 flowing to the evaporator, thereby cooling the air inside the cooling cavity.

[0049] In one embodiment, such as Figure 3 and Figure 5 As shown, the inverter module 441 and the rectifier module 442 are located on opposite sides of the substrate 453. The compressor assembly 400 also includes a second heating module, such as... Figure 3 and Figure 4 As shown, the second heating module includes an AC power module 461 and a DC power module 462. Both the AC power module 461 and the DC power module 462 are located inside the sealed cavity and on both sides of the cooling plate 431, that is, the cooling plate 431 is located between the AC power module 461 and the DC power module 462. The AC power module 461 and the DC power module 462 are low-power first heating modules. The heat generated by the AC power module 461 and the DC power module 462 is transferred to the air inside the sealed cavity. Finally, this heat is transferred to the cooling plate 431 through the phase change cooling device 450, carried away by the refrigerant flowing inside the cooling plate 431, and flows to the evaporator.

[0050] In some examples, such as Figure 10 The compressor body 410 shown has a fourth cooling channel 412, which is configured to cool the motor of the compressor body 410. The first cooling channel 421 is located in the cover 420, and the second cooling channel 411 is located in the compressor body 410. The outlet of the first cooling channel 421 may be connected to the inlet of the third cooling channel and the inlet of the fourth cooling channel 412. Part of the refrigerant supplied by the first cooling channel 421 flows to the third cooling channel, and another part flows to the fourth cooling channel 412. The refrigerant flowing out of the second cooling channel 411 and the refrigerant flowing out of the fourth cooling channel 412 then flow to the evaporator.

[0051] Better, such as Figure 10The shell of the illustrated compressor body 410 is further provided with a manifold flow passage 413, the outlet of the manifold flow passage 413 is in communication with the inlet of the evaporator, the inlet of the manifold flow passage 413 is in communication with the outlet of the second cooling flow passage 411 and the outlet of the fourth cooling flow passage 412, the refrigerant flowing out from the second cooling flow passage 411 and the refrigerant flowing out from the fourth cooling flow passage 412 flow into the manifold flow passage 413 to be combined, and then flow toward the evaporator from the outlet of the manifold flow passage 413.

[0052] In some embodiments, as Figure 2 shown, the cover body 420 is a plastic cover body. By cooling the air inside the cooling chamber, the AC power module 461, the DC power module 462, the frequency conversion module 441, the rectification module 442 and the motor, the thermal stress generated by the plastic cover body can also be reduced.

[0053] In some embodiments, the compressor body 410 is configured as a magnetic levitation compressor body.

[0054] In summary, in the compressor assembly provided by the embodiments of the present invention, the first cooling device and the first heat generating module are integrated on the compressor body. Compared with the technical solution in which the first cooling device and the first heat generating module are arranged separately from the compressor body, the compressor assembly has a more compact volume and occupies a smaller space. Therefore, when the compressor assembly is applied to a heating, ventilation and air conditioning system, the occupied space of the heating, ventilation and air conditioning system can be reduced; furthermore, the first cooling device cools and reduces the temperature of the first heat generating module, so as to avoid overheating damage of the first heat generating module in the sealed cavity because heat cannot be quickly dissipated to the outside.

[0055] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "one side", "the other side", "one end", "the other end", "side", "opposite", "four corners", "periphery", ""mouth"-shaped structure" and the like are based on the orientation or positional relationship shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred structure must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation to the present invention.

[0056] In the description of the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "connected", "directly connected", "indirectly connected", "fixedly connected", "mounted", "assembled" should be understood in a broad sense, for example, it may be a fixed connection, a detachable connection, or an integral connection; the terms "mounted", "connected", "fixedly connected" may be directly connected, or indirectly connected through an intermediate medium, or may be internal communication between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood under specific circumstances.

[0057] While the embodiments disclosed in this invention are as described above, the content is merely for the purpose of facilitating understanding of the invention and is not intended to limit the invention. Any person skilled in the art to which this invention pertains may make any modifications and changes to the form and details of the implementation without departing from the spirit and scope disclosed herein; however, the scope of patent protection of this invention shall still be defined by the appended claims.

Claims

1. A compressor assembly, characterized in that, include: The compressor body includes a compressor body and a cover. The cover is located outside the compressor body and disposed on the compressor body, and the cover and the compressor body together form a sealed cavity. The compressor body has a first cooling channel and a second cooling channel. A first cooling device is disposed within the sealed cavity and has a third cooling channel, wherein the first cooling channel, the third cooling channel, and the second cooling channel are sequentially connected; and The first heating module is located inside the sealed cavity and is disposed in the first cooling device. The first heating module includes at least one of a frequency converter module and a rectifier module. The first cooling device is configured to cool and reduce the temperature of the first heating module. One of the first cooling channel and the second cooling channel is located in the cover and the other is located in the compressor body.

2. The compressor assembly according to claim 1, characterized in that, The first cooling device includes a first connecting channel, a cooling plate, and a second connecting channel arranged in sequence. The cooling plate has multiple flow channels arranged in parallel. The first cooling channel, the first connecting channel, the multiple flow channels, the second connecting channel, and the second cooling channel are connected in sequence. The third cooling channel includes the first connecting channel, the multiple flow channels, and the second connecting channel.

3. The compressor assembly according to claim 2, characterized in that, One of the first connecting flow channel and the second connecting flow channel includes a manifold and a head installed at the end of the manifold, and the other of the first connecting flow channel and the second connecting flow channel includes a branch pipe and a head installed at the end of the branch pipe.

4. The compressor assembly according to any one of claims 1 to 3, characterized in that, Also includes: A phase change cooling device is located inside the sealed cavity. The evaporation section of the phase change cooling device is spaced apart from the first cooling device, and the condensation section is located within the first cooling device. The phase change cooling device is configured to transfer heat from inside the sealed cavity to the first cooling device.

5. The compressor assembly according to claim 4, characterized in that, The phase change cooling device includes: The phase change tube has an evaporation section spaced apart from the first cooling device and a condensation section located within the first cooling device. Fins are disposed in the evaporation section of the phase change tube; and A substrate is disposed on the first cooling device, and the condensation section of the phase change tube is disposed on the substrate.

6. The compressor assembly according to claim 4, characterized in that, The first heating module includes the frequency converter module and the rectifier module, and the frequency converter module and the rectifier module are located on both sides of the phase change cooling device.

7. The compressor assembly according to any one of claims 1 to 3, characterized in that, Also includes: The second heating module is located inside the sealed cavity.

8. The compressor assembly according to claim 7, characterized in that, The second heating module includes an AC power module and a DC power module, which are located on opposite sides of the first cooling device.

9. The compressor assembly according to any one of claims 1 to 3, characterized in that, The protection level of the sealed cavity is not lower than IP67.

10. The compressor assembly according to any one of claims 1 to 3, characterized in that, The compressor body has a fourth cooling channel, which is configured to cool and reduce the temperature of the motor of the compressor body.

11. The compressor assembly according to claim 10, characterized in that, The compressor body is a magnetic levitation compressor body, and the inlet of the fourth cooling channel is connected to the outlet of the first cooling channel.

12. A heating, ventilation, and air conditioning system, characterized in that, The system includes a first heat exchanger, a throttling component, a second heat exchanger, and a compressor assembly as described in any one of claims 1 to 11. The first heat exchanger, the throttling component, the second heat exchanger, and the compressor body are sequentially connected to form a refrigerant flow path. One of the first cooling channel and the second cooling channel is connected to the outlet of the first heat exchanger, and the other is connected to the inlet of the second heat exchanger.

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