Scroll compressor and heat pump device
By designing a simple-structured injection chamber in the scroll compressor, and utilizing the first chamber on the casing and a check valve device to achieve unidirectional flow, the problems of complex structure and numerous components in existing scroll compressors are solved. This also reduces pressure fluctuations in the discharge chamber and integrates the seals, thereby lowering costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- ROBERT BOSCH GMBH
- Filing Date
- 2024-11-01
- Publication Date
- 2026-05-08
AI Technical Summary
Existing gas-injection enthalpy-increasing scroll compressors have complex structures and require a large number of parts, resulting in high manufacturing and assembly costs.
A scroll compressor was designed with a simple structure and a small number of components for the air supply chamber. Unidirectional flow is achieved through the first chamber on the casing and a check valve device, which simplifies the formation of the air supply chamber.
It effectively reduces pressure fluctuations in the discharge chamber, allows for the integration of seals, and lowers manufacturing and assembly costs.
Smart Images
Figure CN121993398A_ABST
Abstract
Description
Technical Field
[0001] This application relates to a scroll compressor and a heat pump device. The scroll compressor and heat pump device of this application are particularly suitable for applications such as vehicles, residences, or industrial plants. Background Technology
[0002] In vehicles or homes, heat pump systems are commonly used to change the ambient temperature, such as for heating or cooling. Heat pump systems typically consist of a compressor, condenser, evaporator, and expansion valve. Scroll compressors are often used due to their high efficiency, smooth operation, and high reliability. However, conventional scroll compressors have a relatively low COP (Coefficient of Performance), especially at low temperatures. To further improve efficiency, enthalpy-increasing scroll compressors with gas injection are currently known. However, existing enthalpy-increasing scroll compressors with gas injection have a very complex gas injection chamber structure and require numerous components, resulting in significant time and cost in manufacturing and assembly. Summary of the Invention
[0003] The purpose of this application is to provide a scroll compressor that enables the injection chamber of the scroll compressor to be formed with a simple structure and a small number of components.
[0004] According to a first aspect of this application, a scroll compressor is provided, the scroll compressor comprising:
[0005] Moving scroll plate;
[0006] A static vortex disk, the static vortex disk having a base plate and a vortex wall disposed on the base plate; and
[0007] A housing disposed on the side of the substrate facing away from the vortex wall;
[0008] Its features are,
[0009] The housing has a first cavity with a first opening on the bottom surface of the housing facing the substrate. The first opening is covered by the substrate to form a gas supply chamber. The gas supply chamber is connected to a compression chamber corresponding to the intermediate pressure stage formed by the moving scroll and the stationary scroll via a gas supply hole on the substrate. The first cavity is connected to the gas supply port of the scroll compressor. A check valve device with unidirectional flow from the gas supply port to the gas supply chamber is provided in the first cavity.
[0010] According to a second aspect of this application, a heat pump device is provided, the heat pump device including the aforementioned scroll compressor and including an evaporator, a condenser, an expansion valve and a make-up gas supply device, wherein the outlet of the make-up gas supply device is connected to the make-up gas port of the scroll compressor.
[0011] At least in some embodiments, the positive effects of this application are: it enables the formation of the injection chamber of a scroll compressor with a simple structure and a small number of components; it effectively reduces pressure fluctuations in the discharge chamber; and it allows for the integration of seals. Attached Figure Description
[0012] The principles, features, and advantages of this application will be better understood below with reference to the accompanying drawings. The drawings include:
[0013] Figure 1 An example of the moving scroll and stationary scroll of the scroll compressor of this application is shown schematically in cross-sectional view.
[0014] Figure 2 Examples of some components of the scroll compressor of this application are shown in exploded perspective.
[0015] Figure 3 An example of the housing is shown schematically in a three-dimensional view.
[0016] Figure 4 An example of a housing, a stationary vortex disc, and a drain port check valve assembly is shown schematically in a three-dimensional sectional view.
[0017] Figure 5 Enlarged and shown separately Figure 2 The static vortex disk in the middle.
[0018] Figure 6 An example of a housing, vortex plate, and drain port check valve assembly is shown schematically in a perspective view, with the housing cut open.
[0019] Figure 7 An example of a device consisting of a stationary vortex disc, a seal, and a drain port check valve is shown schematically in a three-dimensional view.
[0020] Figure 8 An example of the housing and the check valve assembly for the air supply chamber is shown in a perspective sectional view.
[0021] Figure 9 An example of a housing and sensor is shown schematically in a 3D view.
[0022] Figure 10 An example of a cross-section separating the sealing section is shown schematically.
[0023] Figure 11 Another example of the housing and check valve assembly for the air supply chamber is shown schematically in an exploded perspective view.
[0024] Figure 12 A three-dimensional diagram is shown schematically. Figure 11 The housing and check valve assembly.
[0025] Figure 13 An example of the heat pump device of this application is illustrated schematically. Detailed Implementation
[0026] To make the technical problems to be solved, the technical solutions, and the beneficial technical effects of this application clearer, the application will be further described in detail below with reference to the accompanying drawings and several exemplary embodiments. It should be understood that the specific embodiments described herein are only for explaining this application and are not intended to limit the scope of protection of this application.
[0027] Figure 1 The scroll compressor 96 of this application is schematically shown in cross-sectional view (see [reference]). Figure 13 An example of the moving scroll 35 and stationary scroll 1 is shown. Here, a compression chamber 33 corresponding to the intermediate pressure stage and a compression chamber 34 corresponding to the highest pressure stage can be seen. The intermediate pressure stage specifically refers to the pressure stage below which the pressure is higher than the pressure at the scroll inlet 36 but lower than the pressure of the highest pressure stage. The compression chamber 34 corresponding to the highest pressure stage is specifically connected to a discharge port 14 on the base plate 10 of the stationary scroll 1, so that the compressed gas can be discharged through the discharge port 14.
[0028] The stationary scroll 1, sometimes also called the fixed scroll, is fixed inside the scroll compressor 96. The moving scroll 35, sometimes also called the rotating scroll, rotates relative to the stationary scroll 1, causing gas compression.
[0029] The scroll compressor 96 also includes, in particular, an electric motor for driving the drive scroll 35, an eccentric shaft, and other housing components.
[0030] Figure 2 An exploded perspective view shows examples of some components of the scroll compressor 96 of this application. The scroll compressor 96 is shown here as a stationary scroll 1, a seal 5, a discharge port check valve device 8 for the discharge port 14, a check valve device 7 for the replenishment chamber 30, a housing 2, and a sensor 4. The sensor 4 is used, in particular, to detect temperature and / or pressure. The axial direction 32 of the scroll compressor 96 is shown with a dashed line. The axial direction 32 can be understood in particular as the direction parallel to the drive shaft of the motor of the scroll compressor 96, or the direction parallel to the longitudinal axis of the scroll compressor 96.
[0031] See Figure 2 The housing 2, in particular, forms the rear cover of the scroll compressor 96.
[0032] Figure 3 An example of housing 2 is shown schematically in a three-dimensional view.
[0033] Figure 4An example of a housing 2 with a stationary vortex plate 1 and a drain port check valve device 8 is shown schematically in a three-dimensional sectional view.
[0034] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the scroll compressor 96 includes:
[0035] 35mm moving scroll plate;
[0036] Static vortex disk 1, the static vortex disk 1 having a substrate 10 and a vortex wall 11 disposed on the substrate 10; and
[0037] A housing 2 is disposed on the side of the substrate 10 opposite to the vortex wall 11;
[0038] The housing 2 has a first cavity 22, which has a first opening 220 on the bottom surface 24 of the housing 2 facing the base plate 10. The first opening 220 is covered by the base plate 10 to form a gas supply chamber 30. The gas supply chamber 30 is connected to a compression chamber 33 corresponding to the intermediate pressure stage formed by the moving scroll 35 and the stationary scroll 1 via a gas supply hole 13 on the base plate 10. The first cavity 22 is connected to the gas supply port 26 of the scroll compressor 96. A check valve device 7 is provided in the first cavity 22 for unidirectional flow from the gas supply port 26 to the gas supply chamber 30.
[0039] Therefore, it is particularly easy to form the air replenishment chamber 30 in terms of structure.
[0040] See Figure 4 The gas supply port 26 is the port through which the gas to be supplied enters the scroll compressor 96. During gas supply, the pressure of the gas entering through the gas supply port 26 can be greater than the pressure of the gas in the compression chamber 33. Thus, the gas entering through the gas supply port 26 enters the gas supply chamber 30 via the open check valve device 7, and then enters the compression chamber 33 corresponding to the intermediate pressure stage via the gas supply hole 13 on the base plate 10. When the pressure of the gas at the gas supply port 26 is lower than the pressure of the gas in the gas supply chamber 30, the check valve device 7 closes to prevent the gas in the gas supply chamber 30 from flowing back to the gas supply port 26.
[0041] "Opening" specifically refers to a large opening. Smaller flow holes in a cavity should not be considered openings.
[0042] According to an exemplary embodiment of this application, see Figure 2 , Figure 3 and Figure 4The housing 2 has a second cavity 23, which has a second opening 230 on the bottom surface 24 of the housing 2 facing the substrate 10. The second opening 230 is covered by the substrate 10 to form a discharge chamber 31. The discharge chamber 31 communicates via a discharge hole 14 on the substrate 10 to a compression chamber 34 corresponding to the highest pressure stage formed by the moving scroll 35 and the stationary scroll 1. The discharge chamber 31 communicates with the discharge port 28 of the scroll compressor. Here, since both the first cavity 22 and the second cavity 23 of the housing 2 are open to the substrate 10 of the stationary scroll 1, the first cavity 22 and the second cavity 23 can be easily manufactured. Furthermore, by way of example, the discharge port 28 is integrated into the housing 2.
[0043] Here, a discharge port check valve device 8 is also provided for the discharge port 14, which allows one-way flow from the discharge port 14 to the discharge chamber 31.
[0044] According to an exemplary embodiment of this application, see Figure 3 The housing has an inner cavity 20 and a partition wall 21 that spans across the inner cavity 20, dividing it into a first cavity 22 and a second cavity 23. This simplifies the structure of the first cavity 22 and the second cavity 23 and makes it easier to manufacture the partition wall 21. "Spanning" is understood, for example, as having two opposing connection points between the partition wall 21 and the side wall 200 of the inner cavity 20. However, the partition wall 21 may also have other forms besides spanning.
[0045] Furthermore, it is conceivable that the first cavity 22 and the second cavity 23 may be separated in a manner different from that of the partition wall 21. For example, it is conceivable that, instead of the partition wall 21, the first cavity 22 and the second cavity 23 may be separated by a seal and / or by a partition structure on the substrate 10.
[0046] According to an exemplary embodiment of this application, see Figure 4 The partition wall 21 extends parallel to the axial direction 32 of the scroll compressor 96. This allows the partition wall 21 to be easily integrally formed. Furthermore, the partition wall 21 extends particularly perpendicular to the bottom surface 24 of the housing 2 facing the substrate 10. The bottom surface 24 of the housing 2 can be parallel to the side surface 12 of the substrate 10 facing away from the scroll wall 11.
[0047] According to an exemplary embodiment of this application, see Figure 4 Along the axial direction 32 of the scroll compressor 96, the partition wall 21 is flush with the bottom surface 24 of the housing 2 facing the base plate 10. This facilitates sealing. Alternatively, the partition wall 21 may be lower than or slightly higher than the bottom surface 24.
[0048] Figure 5 Enlarged and shown separately Figure 2 The static vortex disk 1 in the middle.
[0049] According to an exemplary embodiment of this application, see Figure 5 The side 12 of the substrate 10 facing away from the vortex wall 11 is flat. This simplifies the structure of the stationary vortex disk 1 and facilitates sealing with the housing 2.
[0050] like Figure 5 As shown, the discharge port 14 specifically includes a main discharge port 140 in the middle and a secondary discharge port 141 on each side of the main discharge port 140. The substrate 10 is also provided with a substrate channel 15 for noise reduction, an oil return port 17, and a threaded hole 16 for mounting the discharge port check valve device 8.
[0051] Figure 6 An example of a housing 2, a stationary vortex plate 1, and a drain port check valve device 8 is shown schematically in a perspective view, wherein the housing 2 is cut open.
[0052] According to an exemplary embodiment of this application, such as Figure 6 As shown, viewed in projection along the axial direction 32 of the scroll compressor 96, the partition wall 21 has a convex shape 60 protruding into the first cavity 22. The convex shape 60 of the partition wall 21 effectively increases the volume of the second cavity 23, thereby effectively reducing pressure fluctuations within the discharge chamber 31.
[0053] According to an exemplary embodiment of this application, such as Figure 3 and Figure 6 As shown, viewed in projection along the axial direction 32 of the scroll compressor 96, the first chamber 22 includes a small chamber 222 and a large chamber 223 on both sides of the convex shape 60, and a connecting channel 224 formed at the top 600 of the convex shape 60. The small chamber 222 and the large chamber 223 are interconnected via the connecting channel 224. The check valve device 7 is disposed in the large chamber 223. Each of the small chamber 222 and the large chamber 223 is connected to a gas supply hole 13 on the base plate 10. The check valve device 7 can be conveniently arranged through the large chamber 223. Furthermore, gas can be supplied to the two opposing compression chambers 33 simultaneously through the small chamber 222 and the large chamber 223.
[0054] According to an exemplary embodiment of this application, such as Figure 6As shown, viewed in projection along the axial direction 32 of the scroll compressor 96, the partition wall 21 has two shoulders 61 located on both sides of the convex shape 60. The convex shape 60 is connected to the side wall 200 of the inner cavity 20 via the two shoulders 61. Each air inlet 13 is adjacent to the transition portion 62 between the convex shape 60 and each shoulder 61. The shoulders 61 can increase the volume of the second cavity 23. Furthermore, the aforementioned position of the air inlet 13 allows it to be easily connected to the compression chamber 33 corresponding to the intermediate pressure stage.
[0055] According to an exemplary embodiment of this application, such as Figure 2 , Figure 3 and Figure 6 As shown, the housing 2 has a discharge conduit 280 communicating with the discharge port 28. The discharge chamber 31 is connected to the discharge conduit 280 via a flow passage 281 on the discharge conduit 280. Viewed in the axial direction 32 of the scroll compressor 96, the flow passage 281 is adjacent to the top 600 of the convex shape 60. The discharge conduit 280 further reduces pressure fluctuations in the gas delivered to the discharge port 28. The position of the flow passage 281 allows it to be offset as much as possible from the discharge port 14 on the substrate 10, thereby reducing pressure fluctuations in the output gas. The discharge conduit 280 is integrated into the housing 2.
[0056] Figure 7 An example of a volute 1, a seal 5, and a drain port check valve assembly 8 is shown schematically in a three-dimensional view.
[0057] According to an exemplary embodiment of this application, see Figure 7 The scroll compressor 96 includes an integral seal 5, at least partially disposed between the housing 2 and the base plate 10, and the air supply chamber 30 and the discharge chamber 31 share the seal 5. Since both the first chamber 22 and the second chamber 23 are open toward the base plate 10 of the stationary scroll 1, the integrated seal 5 can be conveniently used to seal the air supply chamber 30 and the discharge chamber 31.
[0058] According to an exemplary embodiment of this application, such as Figure 7 As shown, the seal 5 includes an annular sealing portion 51 and a partition sealing portion 50 connected to the annular sealing portion 51. Viewed in projection along the axial direction 32 of the scroll compressor 96, the annular sealing portion 51 surrounds the inner cavity 20, and the partition sealing portion 50 is adapted to be positioned between the partition wall 21 and the base plate 10 to seal the air supply chamber 30 and the exhaust chamber 31 against each other. This facilitates sealing.
[0059] According to an exemplary embodiment of this application, such as Figure 7 As shown, the partition sealing portion 50 has a protruding section 63 that protrudes into the first cavity 22. The shape of the partition sealing portion 50 is particularly matched to the shape of the partition wall 21.
[0060] According to an exemplary embodiment of this application, such as Figure 7 As shown, the seal 5 includes an outer ring portion 52 surrounding the annular sealing portion 51 and a connecting portion 53 connecting the annular sealing portion 51 and the outer ring portion 52. The outer ring portion 52 is particularly used for sealing between the housing 2 and another housing of the scroll compressor 96 for accommodating the stationary scroll plate 1. The integral construction of the seal 5 simplifies its manufacture and installation. Furthermore, the seal 5 also includes a channel sealing portion 58 for sealing the oil return passage.
[0061] In some cases, it may be conceivable that the separating sealing portion 50 and the annular sealing portion 51 constitute a single seal 5, while the outer ring portion 52 constitutes another separate seal 5.
[0062] Figure 8 An example of the housing 2 and the check valve device 7 for the air supply chamber 30 is shown in a perspective sectional view.
[0063] According to an exemplary embodiment of this application, such as Figure 8 As shown, the check valve device 7 includes a valve plate 71, a baffle 72 for limiting the opening height of the valve plate 71, and a screw 73 for fixing the valve plate 71 and the baffle 72 to the housing 2.
[0064] The structure of the discharge port check valve device 8 is similar to that of the check valve device 7 used for the air supply chamber 30, and will not be described further here.
[0065] Figure 9 An example of housing 2 and sensor 4 is shown schematically in a 3D view.
[0066] like Figure 9 As shown, the central axis 27 of the air inlet 26 can be parallel to the axial direction 32 of the scroll compressor 96. Therefore, the gas used for air replenishment can easily enter the air replenishment chamber 30 through the air inlet 26 and flow to the air replenishment hole 13. The central axis 29 of the discharge port 28, or discharge pipe 280, is particularly perpendicular to the axial direction 32 of the scroll compressor 96 to reduce pressure fluctuations.
[0067] Figure 10 An example of a cross-section of the partition sealing portion 50 is shown schematically.
[0068] According to an exemplary embodiment of this application, see Figure 10In cross-section, the separating sealing portion 50 includes a central arched portion 54 and supporting portions 55 on both sides of the arched portion 54, thereby forming an elastic structure. This elastic structure enables a tighter seal.
[0069] According to an exemplary embodiment of this application, see Figure 10 Along the axial direction 32 of the scroll compressor 96, the separating seal includes a central metal layer 56 and elastomeric layers 57 on both sides of the metal layer 56 for contacting the housing 2 and the substrate 10, respectively. This achieves a better seal.
[0070] Figure 11 Another example of housing 2 and check valve device 7 for air supply chamber 30 is shown schematically in exploded perspective.
[0071] Figure 12 A three-dimensional diagram is shown schematically. Figure 11 The housing 2 and the check valve device 7.
[0072] According to an exemplary embodiment of this application, such as Figure 11 and Figure 12 As shown, the first cavity 22 is flat. This effectively reduces the clearance volume. Flat means that the first cavity 22 is relatively flat or shallow along the axial direction 32. In addition, because the first cavity 22 is flat, the air inlet 26 can be significantly lower along the axial direction 32, thus effectively reducing the height of the scroll compressor 96.
[0073] Compared to the first chamber 22, the second chamber 23 can be significantly deeper to accommodate more gas.
[0074] According to an exemplary embodiment of this application, see Figure 11 and Figure 12 A partial recess 225 for accommodating the check valve device 7 is provided at the bottom of the first cavity 22. A channel 221 for noise reduction is also provided in the partial recess 225. Here, in the projection along the axial direction 32, for example, the air inlet 26 is located at the edge of the first cavity 22, while the screw 73 is located at the center of the first cavity 22.
[0075] In contrast, Figure 3 For example, in the projection along the axial direction 32, the air inlet 26 is located in the middle of the first cavity 22, while the screw 73 is located on the side of the first cavity 22.
[0076] Figure 13An example of a heat pump device according to this application is illustrated schematically. The heat pump device includes the aforementioned scroll compressor 96 and includes an evaporator 90, a condenser 91, an expansion valve 92, and a make-up gas supply device 95, the outlet 950 of which is connected to the make-up gas port 26 of the scroll compressor 96. During make-up gas supply, the pressure of the gas output from the outlet 950 of the make-up gas supply device 95 is, for example, higher than the pressure in the compression chamber 33 to which make-up gas is being supplied. The discharge port 28 of the scroll compressor 96 may be connected to the condenser 91. The condenser 91 may be connected to the make-up gas supply device 95. The expansion valve 92 may be connected to the evaporator 90. The evaporator 90 may be connected to the inlet 960 of the scroll compressor 96.
[0077] exist Figure 13 In this configuration, the make-up gas supply device 95 is exemplarily an economizer 97. The refrigerant flowing from the condenser 91 is divided into two streams. The first stream, shown in solid line, goes directly to the economizer 97, while the second stream, shown in dashed line, is cooled by the first expansion valve 93 before reaching the economizer 97. The first and second streams of refrigerant exchange heat through the economizer 97. The cooled first stream then reaches the second expansion valve 94, and then passes through the evaporator 90 to the scroll compressor 96. The heated second stream of refrigerant is supplied from the outlet 950 to the make-up gas port 26 of the scroll compressor 96. The second stream of refrigerant output from the outlet 950 can also be referred to as economizer gas.
[0078] Figure 13 The heat pump device described is merely an example; obviously, one can also conceive of heat pump devices with... Figure 13 Various variations are possible. For example, the make-up gas supply device 95 can be a flash evaporator, thereby providing the make-up gas. However, the make-up gas supply device 95 can also have other gas sources.
[0079] The features in the accompanying drawings should be understood as exemplary only and should not be construed as absolute limitations on this application. Various variations in the number, size, shape, position, and interrelationship of the elements in the drawings will readily occur to those skilled in the art.
[0080] In this application, parallel is particularly understood to mean at least substantially parallel, and in particular, a deviation of up to 10° is allowed. Perpendicular is particularly understood to mean at least substantially perpendicular, and in particular, a deviation of up to 10° is allowed.
[0081] In the embodiments, various features may be described in combination. However, each feature in this application can be viewed individually and can be combined with any other feature in any way where feasible in principle, without exceeding the scope of disclosure of this application.
[0082] Although specific embodiments of this application are described in detail herein, they are given for illustrative purposes only and should not be construed as limiting the scope of this application. Various substitutions, modifications, and alterations can be conceived without departing from the spirit and scope of this application.
[0083] List of reference numerals
[0084] 1. Static vortex disk
[0085] 10 substrates
[0086] 11. Vortex Wall
[0087] 12 sides
[0088] 13 air inlet holes
[0089] 14 exhaust holes
[0090] 140 main exhaust port
[0091] 141 exhaust ports
[0092] 15 substrate channels
[0093] 16 threaded holes
[0094] 17 oil return hole
[0095] 2 shells
[0096] 20 inner cavity
[0097] 200 sidewalls
[0098] 21 partition walls
[0099] 22 First Cavity
[0100] 220 First Opening
[0101] 221 Channel
[0102] Room 222
[0103] Room 223
[0104] 224 connection channels
[0105] 225 Local depression
[0106] 23 Second cavity
[0107] 230 Second Opening
[0108] 24 bottom
[0109] 26 air inlets
[0110] 27. Central axis of the air inlet
[0111] 28 emission outlets
[0112] 280 discharge pipe
[0113] 281 flow passage
[0114] The central axis of the 29 emission outlets
[0115] 30 air replenishment chambers
[0116] 31 emission room
[0117] 32 Axial Direction
[0118] 33. Compression chamber corresponding to the intermediate pressure stage
[0119] 34. Compression chamber corresponding to the highest pressure stage
[0120] 35-inch rotating scroll
[0121] 36-turbo disc intake
[0122] 4 sensors
[0123] 5 seals
[0124] 50 Separated Sealing Section
[0125] 51 Annular sealing part
[0126] 52 outer ring part
[0127] 53 Connection Part
[0128] 54 arched sections
[0129] 55 Support Section
[0130] 56 metal layers
[0131] 57 Elastomer Layer
[0132] 58-channel sealing section
[0133] 60 convex shape
[0134] 600 top
[0135] 61 Shoulder
[0136] 62 Transition Section
[0137] 63 protruding segments
[0138] 7. Check valve assembly
[0139] 71 valve plate
[0140] 72 baffles
[0141] 73 screws
[0142] 8. Drainage port check valve device
[0143] 90 Evaporator
[0144] 91 condenser
[0145] 92 expansion valve
[0146] 93 First Expansion Valve
[0147] 94 Second Expansion Valve
[0148] 95 supplementary gas supply device
[0149] 950 air outlet
[0150] 96 scroll compressor
[0151] 960 air intake
[0152] 97 economical machine
Claims
1. A scroll compressor, said scroll compressor (96) comprising: Moving scroll plate (35); A stationary vortex disk (1), the stationary vortex disk (1) having a base plate (10) and a vortex wall (11) disposed on the base plate (10); and A housing (2) disposed on the side of the substrate (10) facing away from the vortex wall (11); Its features are, The housing (2) has a first cavity (22) with a first opening (220) on the bottom surface (24) of the housing (2) facing the base plate (10). The first opening (220) is covered by the base plate (10) to form a gas supply chamber (30). The gas supply chamber (30) is connected to a compression chamber (33) corresponding to the intermediate pressure stage formed by the moving scroll (35) and the stationary scroll (1) via a gas supply hole (13) on the base plate (10). The first cavity (22) is connected to the gas supply port (26) of the scroll compressor (96). A check valve device (7) is provided in the first cavity (22) for unidirectional flow from the gas supply port (26) to the gas supply chamber (30).
2. The scroll compressor according to claim 1, characterized in that, The housing (2) has a second cavity (23) with a second opening (230) on the bottom surface (24) of the housing (2) facing the substrate (10). The second opening (230) is covered by the substrate (10) to form a discharge chamber (31). The discharge chamber (31) is connected via a discharge hole (14) on the substrate (10) to a compression chamber (34) corresponding to the highest pressure stage formed by the moving scroll (35) and the stationary scroll (1). The discharge chamber (31) is connected to the discharge port (28) of the scroll compressor.
3. The scroll compressor according to claim 2, characterized in that, The scroll compressor (96) includes at least one of the following features: The housing has an inner cavity (20) and a partition wall (21) that spans the inner cavity (20) and divides it into a first cavity (22) and a second cavity (23); The scroll compressor (96) includes an integral seal (5) at least partially disposed between the housing (2) and the base plate (10), and the air supply chamber (30) and the discharge chamber (31) share the seal (5).
4. The scroll compressor according to claim 3, characterized in that, Viewed in projection along the axial direction (32) of the scroll compressor (96), the partition wall (21) has a convex shape (60) protruding toward the first cavity (22); Viewed in projection along the axial direction (32) of the scroll compressor (96), the first cavity (22) includes a small chamber (222) and a large chamber (223) on both sides of the convex shape (60) and a connecting channel (224) formed at the top (600) of the convex shape (60). The small chamber (222) and the large chamber (223) are interconnected via the connecting channel (224). The check valve device (7) is disposed in the large chamber (223). The small chamber (222) and the large chamber (223) are each connected to a gas inlet (13) on the base plate (10). The housing (2) has a discharge pipe (280) communicating with the discharge port (28), and the discharge chamber (31) is connected to the discharge pipe (280) via a flow passage (281) on the discharge pipe (280). In a projection along the axial direction (32) of the scroll compressor (96), the flow passage (281) is adjacent to the top (600) of the convex shape (60). Viewed in projection along the axial direction (32) of the scroll compressor (96), the partition wall (21) has two shoulders (61) located on both sides of the convex shape (60), the convex shape (60) being connected to the sidewall (200) of the inner cavity (20) via the two shoulders (61), and each air inlet (13) is adjacent to the transition (62) between the convex shape (60) and each shoulder (61).
5. The scroll compressor according to claim 3 or 4, characterized in that, The seal (5) includes an annular sealing portion (51) and a partition sealing portion (50) connected to the annular sealing portion (51). In projection along the axial direction (32) of the scroll compressor (96), the annular sealing portion (51) surrounds the inner cavity (20). The partition sealing portion (50) is adapted to be placed between the partition wall (21) and the substrate (10) to seal the air supply chamber (30) and the discharge chamber (31) relative to each other.
6. The scroll compressor according to claim 5, characterized in that, The scroll compressor (96) includes at least one of the following features: The partition sealing portion (50) has a protruding section (63) that protrudes into the first cavity (22); The seal (5) includes an outer ring portion (52) surrounding the annular sealing portion (51) and a connecting portion (53) connecting the annular sealing portion (51) and the outer ring portion (52).
7. The scroll compressor according to claim 5, characterized in that, The scroll compressor (96) includes at least one of the following features: In cross-section, the partition sealing portion (50) includes an arched portion (54) in the middle and support portions (55) on both sides of the arched portion (54), thereby forming an elastic structure; Along the axial direction (32) of the scroll compressor (96), the partition seal includes a metal layer (56) in the middle and an elastomeric layer (57) on both sides of the metal layer (56) for contacting the housing (2) and the substrate (10) respectively.
8. The scroll compressor according to any one of claims 1 to 4, characterized in that, The scroll compressor includes at least one of the following features: The check valve device (7) includes a valve plate (71), a baffle (72) for limiting the opening height of the valve plate (71), and screws (73) for fixing the valve plate (71) and the baffle (72) to the housing (2); A partial recess (225) for accommodating the check valve device (7) is provided at the bottom of the first cavity (22); The first cavity (22) is flat.
9. The scroll compressor according to claim 3, characterized in that, The scroll compressor (96) includes at least one of the following features: The partition wall (21) extends parallel to the axial direction (32) of the scroll compressor (96); Along the axial direction (32) of the scroll compressor (96), the partition wall (21) is flush with the bottom surface (24) of the housing (2) facing the substrate (10).
10. A heat pump device, characterized in that, The heat pump device includes a scroll compressor according to any one of claims 1 to 9 and includes an evaporator (90), a condenser (91), an expansion valve (92) and a make-up gas supply device (95), wherein the outlet (950) of the make-up gas supply device (95) is connected to the make-up gas port (26) of the scroll compressor (96).