Pump body structure, compressor and air conditioner

Abstract

This invention discloses a pump body structure, a compressor, and an air conditioner. The pump body structure includes a fixed scroll plate, a moving scroll plate, a bracket assembly, and a support assembly. The fixed scroll plate, the moving scroll plate, and the bracket assembly form a back pressure chamber. The support assembly is inserted into the bracket assembly and can move up and down under the action of the moving scroll plate. A first gas channel is formed on the bracket assembly, and a second gas channel is formed on the support assembly. The up and down movement of the support assembly can adjust the communication area between the first and second gas channels, thereby adjusting the amount of gas flowing into the back pressure chamber through the first or second gas channel. This invention links the current operating condition of the compressor with the communication area of ​​the first and second gas channels, and adjusts the air intake of the back pressure chamber according to the operating condition of the moving scroll plate, so that the pressure in the back pressure chamber is balanced with the gas force on the moving scroll plate, avoiding radial leakage or excessive friction work, reducing noise and compressor power consumption, and improving the energy efficiency ratio.

Description

Technical Field

[0001] This invention belongs to the field of air conditioner technology and relates to a pump body structure, a compressor, and an air conditioner. Background Technology

[0002] A scroll compressor forms a compression chamber through the meshing of a moving scroll and a fixed scroll. The moving scroll revolves around the fixed scroll, compressing the refrigerant within the compression chamber, thus transforming the low-temperature, low-pressure gas in the intake chamber into a high-temperature, high-pressure gas. During gas compression, the scroll experiences a reaction force from the gas, which can cause the moving scroll to tilt, leading to radial leakage within the compression chamber. Repeated refrigerant compression wastes compression work and reduces compressor efficiency.

[0003] To balance the gas force on the moving scroll plate, a common technical solution is to set up a back pressure chamber between the moving scroll plate and the support. For example, a throttle valve can be installed on the support to connect the exhaust chamber and the back pressure chamber, and the pressure difference between the back pressure chamber and the exhaust chamber can be used to control the throttle valve to adjust the pressure in the back pressure chamber. Another method is to connect the exhaust port and the inlet of the back pressure chamber, and guide the exhaust gas from the exhaust port to the back pressure inlet to provide back pressure. However, both of these methods involve connecting the back pressure chamber to the exhaust chamber. In low-pressure ratio overcompression conditions or high-pressure differential undercompression conditions, the excessive back pressure may lead to increased frictional power consumption. That is, the back pressure cannot match the intake and exhaust pressures of the system, resulting in leakage during the compression process and increased power consumption. Summary of the Invention

[0004] In view of this, the present invention provides a pump body structure, a compressor and an air conditioner, which solves the technical problem that the back pressure of the traditional pump body structure cannot match the suction and exhaust pressure of the system operating conditions, thus causing leakage during the compression process.

[0005] To address the aforementioned problems, according to one aspect of this application, an embodiment of the present invention provides a pump body structure, the pump body structure including a fixed scroll plate, a moving scroll plate, a support assembly, and a supporting assembly. The fixed scroll plate, the moving scroll plate, and the support assembly form a back pressure chamber. The supporting assembly is inserted into the support assembly and can move up and down under the action of the moving scroll plate. A first gas channel is provided on the support assembly, and a second gas channel is provided on the supporting assembly. The up and down movement of the supporting assembly can adjust the communication area between the first gas channel and the second gas channel, thereby adjusting the amount of gas flowing into the back pressure chamber through the first gas channel or the second gas channel.

[0006] In some embodiments, the support assembly includes a support body and a plurality of support feet disposed below the support body; the bracket assembly has grooves corresponding to the support feet one by one, the support feet are inserted into the grooves and can move up and down along the grooves under the action of the moving scroll plate.

[0007] In some embodiments, the pump body structure further includes an elastic element located at the bottom of the settling tank, and the bottom of the support foot contacts the elastic element.

[0008] In some embodiments, the side of the support assembly is provided with a flow groove along the axial direction, through which high-pressure gas can flow to the first gas channel.

[0009] In some embodiments, the first gas channel includes an intake channel, the input end of which is located on the outer surface of the support assembly and communicates with the flow channel, and the output end of the intake channel extends radially toward the second gas channel.

[0010] In some embodiments, the second gas channel includes an air inlet groove and a flow hole. The air inlet groove is formed on the outer surface of the support foot and extends into the support foot. One end of the flow hole is connected to the air inlet groove, and the other end of the flow hole is connected to the back pressure chamber.

[0011] In some embodiments, the distance between the lower end face of the support body and the top of the bracket assembly is less than the axial height of the air inlet slot.

[0012] In some embodiments, the support assembly has a lubricating oil channel, one end of which is connected to the air inlet groove, and the other end of which extends to the mating surface between the support foot and the recess. Gas flowing out through the air inlet groove can enter the back pressure chamber through the flow hole, and lubricating oil flowing out through the air inlet groove can flow along the lubricating oil channel to the mating surface between the support foot and the recess.

[0013] In some embodiments, the lubricating oil channel includes a first oil groove and a second oil groove. The first oil groove includes a plurality of circular grooves formed along the circumference of the support foot, and the plurality of circular grooves are evenly distributed axially on the outer surface of the support foot. The second oil groove is formed along the axial direction of the support foot. The second oil groove is connected to the air intake groove, and each circular groove is connected to the second oil groove.

[0014] In some embodiments, a first pressure channel extends from the bottom of the settling tank, and a second pressure channel is provided within the elastic member, wherein the first pressure channel and the second pressure channel are connected.

[0015] In some embodiments, the first gas channel includes an airflow channel, the input end of which is located on the outer surface of the support assembly and communicates with the flow channel, the airflow channel extends radially and passes through the second gas channel, and its output end faces the oil sump; wherein the oil sump is communicated with the back pressure chamber.

[0016] In some embodiments, the second gas passage includes a throttling groove formed on the outer surface of the support foot; under the action of the moving vortex disk, the throttling groove can communicate with the airflow passage.

[0017] According to another aspect of this application, an embodiment of the present invention provides a compressor that includes the pump body structure described above.

[0018] According to another aspect of this application, an embodiment of the present invention provides an air conditioner that includes the compressor described above.

[0019] Compared with the prior art, the pump body structure of the present invention has at least the following beneficial effects:

[0020] The pump body structure provided by the present invention includes a fixed scroll plate, a moving scroll plate, a support assembly, and a supporting assembly. The fixed scroll plate, the moving scroll plate, and the support assembly form a back pressure cavity. The supporting assembly is inserted into the support assembly and can move up and down under the action of the moving scroll plate. A first gas channel is opened on the support assembly, and a second gas channel is opened on the supporting assembly. The up and down movement of the supporting assembly can adjust the communication area between the first gas channel and the second gas channel, thereby adjusting the amount of gas flowing into the back pressure cavity through the first gas channel or the second gas channel.

[0021] When the moving scroll plate is overturned by the reaction force of the gas, it pushes the supporting component below, causing it to move up and down along the support assembly. Initially, the support assembly and the moving scroll plate are relatively stationary. At this time, the first gas channel on the support assembly and the second gas channel on the support assembly are not connected, and gas cannot enter the back pressure chamber through either channel. However, when the moving scroll plate begins to overturn, the support assembly moves downwards, at which point the first and second gas channels partially connect. As the overturning motion becomes more intense, the support assembly displaces downwards significantly, at which point the first and second gas channels have the largest connecting area, allowing more high-pressure gas to enter the back pressure chamber through both channels. In other words, the connection area between the first gas passage and the second gas passage depends on the downward movement distance of the support component, which in turn depends on the intensity of the tilting motion of the moving scroll plate, which in turn depends on the current operating condition of the compressor. Therefore, this embodiment links the current operating condition of the compressor with the connection area between the first gas passage and the second gas passage. High-pressure gas enters the back pressure chamber through the connection area. Thus, the pump body structure provided in this embodiment can adjust the intake volume of the back pressure chamber according to the operating condition of the moving scroll plate, so that the pressure in the back pressure chamber is balanced with the gas force on the moving scroll plate, avoiding radial leakage or excessive friction work, reducing noise and compressor power consumption, and improving the energy efficiency ratio.

[0022] The compressor provided by this invention is designed based on the above-described pump body structure, and its beneficial effects are the same as those of the above-described pump body structure, which will not be repeated here.

[0023] The air conditioner provided by this invention is designed based on the above-mentioned compressor, and its beneficial effects are the same as those of the above-mentioned compressor, which will not be repeated here.

[0024] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it in accordance with the contents of the specification, the preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0025] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a cross-sectional view of a pump body structure provided in an embodiment of the present invention;

[0027] Figure 2 This is a cross-sectional view of a pump body structure provided by an embodiment of the present invention when the moving scroll disk and the support assembly are in a balanced state;

[0028] Figure 3 This is a cross-sectional view of a pump body structure in which the moving vortex disk is in an overturned state, according to an embodiment of the present invention.

[0029] Figure 4 This is a schematic diagram of the support assembly in a pump body structure provided by an embodiment of the present invention;

[0030] Figure 5 This is a schematic diagram of the elastic element in a pump body structure provided by an embodiment of the present invention;

[0031] Figure 6 This is a schematic diagram of the support component in a pump body structure provided by an embodiment of the present invention;

[0032] Figure 7 yes Figure 6 A magnified view of a section at point A in the middle;

[0033] Figure 8 This is a schematic diagram of the support component in a pump body structure from another angle, provided by an embodiment of the present invention;

[0034] Figure 9 This is a cross-sectional view of a support component in a pump body structure provided by an embodiment of the present invention;

[0035] Figure 10 This is a schematic diagram of another structure of the support component in a pump body structure provided by an embodiment of the present invention;

[0036] Figure 11 This is another cross-sectional view of a support component in a pump body structure provided by an embodiment of the present invention;

[0037] Figure 12 This is another cross-sectional view of a pump body structure provided in an embodiment of the present invention;

[0038] Figure 13 This is another cross-sectional view of a pump body structure provided by an embodiment of the present invention, in which the moving scroll and the support assembly are in a balanced state.

[0039] in:

[0040] 1. Fixed scroll plate; 2. Moving scroll plate; 3. Support assembly; 31. First gas passage; 32. Settling tank; 33. Flow channel; 34. First pressure passage; 4. Support assembly; 41. Second gas passage; 42. Support body; 43. Support foot; 44. Lubricating oil passage; 411. Inlet groove; 412. Flow hole; 441. First oil groove; 442. Second oil groove; 5. Back pressure chamber; 6. Elastic element; 61. Second pressure passage; 7. Crankshaft. Detailed Implementation

[0041] To further illustrate the technical means and effects adopted by the present invention to achieve the intended purpose, the specific embodiments, structures, features, and effects according to the present invention will be described in detail below with reference to the accompanying drawings and preferred embodiments. In the following description, different "an embodiment" or "an embodiment" do not necessarily refer to the same embodiment. Furthermore, specific features, structures, or characteristics in one or more embodiments can be combined in any suitable form.

[0042] In the description of this invention, it should be clearly stated that the terms "first," "second," etc., in the specification, claims, and accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence; the terms "vertical," "lateral," "longitudinal," "front," "rear," "left," "right," "up," "down," "horizontal," etc., indicate orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, and are merely for the convenience of describing this invention, and do not mean that the device or element referred to must have a specific orientation or position, and therefore should not be construed as a limitation of this invention.

[0043] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0044] Example 1

[0045] This embodiment provides a pump body structure, such as Figure 1-13As shown, the pump body structure includes a fixed scroll plate 1, a moving scroll plate 2, a support assembly 3, and a support assembly 4. The fixed scroll plate 1, the moving scroll plate 2, and the support assembly 3 form a back pressure chamber 5. The support assembly 4 is inserted into the support assembly 3 and can move up and down under the action of the moving scroll plate 2. A first gas channel 31 is provided on the support assembly 3, and a second gas channel 41 is provided on the support assembly 4. The up and down movement of the support assembly 4 can adjust the communication area between the first gas channel 31 and the second gas channel 41, thereby adjusting the amount of gas flowing into the back pressure chamber 5 through the first gas channel 31 or the second gas channel 41.

[0046] Specifically, the fixed scroll plate 1 and the moving scroll plate 2 mesh to form a compression chamber. The moving scroll plate 2 revolves around the fixed scroll plate 1, compressing the refrigerant in the compression chamber, thereby compressing the low-temperature, low-pressure gas in the intake chamber into a high-temperature, high-pressure gas. When the scroll plates compress the gas, they experience a reaction force from the gas. A back pressure chamber 5 is provided between the fixed scroll plate 1, the moving scroll plate 2, and the support assembly 3. A certain back pressure is supplied to the back pressure chamber 5 to balance the gas force acting on the moving scroll plate 2. However, the compressor operates under various conditions, and the amount of gas required by the back pressure chamber 5 varies depending on the condition.

[0047] To address this, the support assembly 3 in this embodiment has a first gas channel 31, and the support assembly 4 has a second gas channel 41. The vertical movement of the support assembly 4 adjusts the communication area between the first gas channel 31 and the second gas channel 41, thereby regulating the amount of gas flowing into the back pressure chamber 5 through either the first gas channel 31 or the second gas channel 41. In other words, when the moving scroll plate 2 is subjected to the reaction force of the gas and undergoes an overturning motion, it can push the lower support assembly 4, causing it to move vertically along the support assembly 3. In the initial stage, the support assembly 3 and the moving scroll plate 2 are relatively stationary. At this time, the first gas channel 31 on the support assembly 3 and the second gas channel 41 on the support assembly 4 are not connected, and gas cannot enter the back pressure chamber through the first gas channel 31 and the second gas channel 41. When the moving scroll plate 2 begins to tilt, the support assembly 4 will move downward. At this time, the first gas channel 31 and the second gas channel 41 will be partially connected. As the tilting motion becomes more violent, the support assembly 4 will have a large downward displacement. At this time, the first gas channel 31 and the second gas channel 41 have the largest connection area, and more high-pressure gas will enter the back pressure chamber 5 through the first gas channel 31 and the second gas channel 41.

[0048] In other words, the connection area between the first gas passage 31 and the second gas passage 41 depends on the downward movement distance of the support component 4, which in turn depends on the intensity of the overturning motion of the moving scroll plate 2, which in turn depends on the current operating condition of the compressor. Therefore, this embodiment associates the current operating condition of the compressor with the connection area between the first gas passage 31 and the second gas passage 41. High-pressure gas enters the back pressure chamber through the connection area. Thus, the pump body structure provided in this embodiment can adjust the air intake of the back pressure chamber according to the operating condition of the moving scroll plate 2, so that the pressure of the back pressure chamber is balanced with the gas force on the moving scroll plate 2, avoiding radial leakage or excessive friction work, reducing noise and compressor power consumption, and improving the energy efficiency ratio.

[0049] In a specific embodiment, the support component 4 includes a support body 42 and a plurality of support feet 43 disposed below the support body 42; the bracket component 3 has a recess 32 corresponding to each of the support feet 43, the support feet 43 are inserted into the recess 32 and can move up and down along the recess 32 under the action of the moving scroll plate 2.

[0050] The support body 42 has a generally annular structure, with support feet 43 extending downwards from the lower surface of the annular structure. Multiple support feet 43 are provided; for example, in one embodiment, four support feet 43 are provided, evenly distributed circumferentially, i.e., adjacent support feet 43 form a 90° angle. The bracket assembly 3 includes a bracket body, which is generally cylindrical. Inside this cylinder, there is a downwardly recessed mounting surface with a mating hole in the center for mating with the crankshaft 7 of the compressor. A recess 32 is formed on the mounting surface. To match the support feet 43, in one embodiment, four recesses 32 are also provided. Thus, when the support feet 43 are inserted into the corresponding recesses 32, and the moving scroll plate 2 tilts, it acts on the support body 42, causing the support feet 43 below the support body 42 to move up and down within the recesses 32.

[0051] In this embodiment, the movement of the support assembly 4 is achieved through the cooperation of the support foot 43 and the sink 32, which adjusts the communication area of ​​the first gas channel 31 and the second gas channel 41, thereby controlling the amount of gas entering the back pressure chamber 5 so that the amount of gas matches the current working conditions.

[0052] In a specific embodiment, the pump body structure further includes an elastic element 6, which is located at the bottom of the settling tank 32, and the bottom of the support leg 43 contacts the elastic element 6. When the support leg 43 moves downward due to the overturning motion of the moving scroll plate 2, it compresses the elastic element 6. During this process, the elastic element 6 can mitigate the impact of the moving scroll plate 2 on the support assembly 4 and also generate a reaction force on the support assembly 4. When the overturning motion of the moving scroll plate 2 disappears, the support leg 43 will return to its initial position under the restoring force of the elastic element 6.

[0053] In a specific embodiment, the side of the support assembly 3 is provided with an axially oriented flow groove 33, through which high-pressure gas can flow to the first gas channel 31. The support assembly 3 includes a support body, which is generally cylindrical in shape. For better explanation, it is assumed that the cylindrical shape includes a first cylinder at the top and a second cylinder at the bottom. Of course, in reality, the support body is a single structure and is not divided into upper and lower parts. On the outer surface of the first cylinder, a plurality of flow grooves 33 are spaced apart axially. The number of flow grooves 33 is the same as the number of support feet 43 and they correspond one-to-one. On the outside of the second cylinder, below each flow groove 33, there is a groove with a large area. The input end of the first gas channel 31 is located in this groove. In this embodiment, the high-pressure gas first enters the flow groove 33 and is then transmitted through the first gas channel 31.

[0054] In specific implementation, the first gas channel 31 and the second gas channel 41 have several different structures. Two of them are described in detail below:

[0055] The first type:

[0056] In a specific embodiment, such as Figures 6-10 As shown, the first gas channel 31 includes an intake channel. The input end of the intake channel is located on the outer surface of the support assembly 3 and communicates with the flow groove 33. The intake channel extends radially, and its output end faces the second gas channel 41. That is, the input end of the intake channel is provided on the groove on the outer surface of the second cylinder, and the output end of the intake channel extends through the side wall of the second cylinder to the second gas channel 41. Under the action of the moving scroll plate 2, the intake channel has a first state of communicating with the second gas channel 41 and a second state of being separated from the second gas channel 41.

[0057] In a specific embodiment, the second gas channel 41 includes an inlet groove 411 and a flow hole 412. The inlet groove 411 is formed on the outer surface of the support foot 43 and extends into the support foot 43. One end of the flow hole 412 is connected to the inlet groove 411, and the other end of the flow hole 412 is connected to the back pressure chamber 5. The inlet groove 411 needs to communicate with both the inlet channel and the flow hole 412. The flow hole 412 is located inside the support foot 43. Therefore, the inlet groove 411 is formed inside the support foot 43 but extends to the outer surface of the support foot 43. In order to transmit high-pressure gas to the back pressure chamber 5, the flow hole 412 includes a vertical hole and a horizontal hole. One end of the vertical hole is connected to the inlet groove 411, the other end of the vertical hole is connected to one end of the horizontal hole, and the other end of the horizontal hole is connected to the back pressure chamber 5. In this way, when the support assembly 4 moves downward due to the overturning motion of the moving scroll 2, the opening of the air inlet slot 411 can just connect with the air inlet channel. Thus, the high-pressure gas is transmitted to the back pressure chamber 5 in sequence through the air inlet channel, the air inlet slot 411, the vertical hole and the horizontal hole.

[0058] In a specific embodiment, the support assembly 4 is further provided with a lubricating oil channel 44. One end of the lubricating oil channel 44 is connected to the air inlet groove 411, and the other end of the lubricating oil channel 44 extends to the mating surface of the support foot 43 and the recess 32. Gas flowing out of the air inlet groove 411 can enter the back pressure chamber 5 along the flow hole 412, and lubricating oil flowing out of the air inlet groove 411 can flow along the lubricating oil channel 44 to the mating surface of the support foot 43 and the recess 32. During the operation of the pump body structure, lubricating oil may be mixed in with the high-pressure gas. In this embodiment, the lubricating oil in the high-pressure gas can be separated and utilized through the lubricating oil channel 44. Specifically, high-pressure gas mixed with lubricating oil enters the air intake channel after passing through the flow channel 33, and then flows into the air intake groove 411. At the air intake groove 411, the lubricating oil can flow along the lubricating oil channel 44 to the mating surface of the support foot 43 and the sink 32 to lubricate and seal the mating surface, while the high-pressure gas can enter the back pressure chamber 5 along the flow hole 412.

[0059] In a specific embodiment, the lubricating oil channel 44 includes a first oil groove 441 and a second oil groove 442. The first oil groove 441 includes a plurality of circular grooves formed around the circumference of the support leg 43, and the plurality of circular grooves are evenly distributed axially on the outer surface of the support leg 43. The second oil groove 442 is formed axially along the support leg 43. The second oil groove 442 is connected to the air inlet groove 411, and each circular groove is connected to the second oil groove 442. In order to make the flow of lubricating oil smoother and to lubricate the entire mating surface between the support leg 43 and the recess 32, the lubricating oil channel 44 includes a first oil groove 441 and a second oil groove 442. The lubricating oil channel 44 includes a first oil groove 441 and a second oil groove 442 arranged in different directions. Specifically, the first oil groove 441 is arranged circumferentially, and the second oil groove 442 is arranged axially. In this way, the lubricating oil first flows to the circumferentially arranged first oil groove 441 in the air inlet groove 411, and then flows upward along the axially arranged second oil groove 442 to separate the lubricating oil in the high-pressure gas, providing lubrication and sealing for the mating surfaces of the support foot 43 and the sink 32.

[0060] In a specific embodiment, a first pressure channel 34 extends from the bottom of the sink 32, and a second pressure channel 61 is provided inside the elastic member 6. The first pressure channel 34 and the second pressure channel 61 are connected.

[0061] When the moving scroll plate 2 is running smoothly, the support assembly 4 is not in contact with the moving scroll plate 2. At this time, the equilibrium equation of the support assembly 4 is m3g=n(kx+p0S4-p1S3), where m3 is the mass of the support assembly 4, n is the number of support feet 43, k is the equivalent stiffness of the elastic element 6, x is the downward displacement of the support assembly 4, p0 is the pressure of the high-pressure chamber of the shell, S4 is the cross-sectional area of ​​the first pressure channel 34, p1 is the pressure of the back pressure chamber 5, and S3 is the cross-sectional area of ​​the support feet 43.

[0062] In practical use, parameters can be selected according to the balance equation to maintain a suitable distance between the support component 4 and the moving scroll plate 2. Too small a distance will result in additional frictional work, while too large a distance will weaken the back pressure adjustment capability of this structure. The pressure channel formed by the first pressure channel 34 and the second pressure channel 61 provides the support component 4 with a support force p0S4 that varies with operating conditions, ensuring that the equilibrium displacement x of the support component 4 changes little under different operating conditions. When the back pressure is insufficient to balance the gas force, the moving scroll plate 2 will tilt, contacting the support component 4 and causing it to move downwards. The air inlet groove 411 on the support foot 43 will connect with the air inlet channel, allowing gas from the high-pressure chamber of the shell to enter the back pressure chamber 5, increasing the pressure in the back pressure chamber 5. The greater the tilt of the moving scroll plate 2, the greater the downward displacement of the support component, the larger the area of ​​the air inlet groove 411 connected to the air inlet channel, and the faster the pressure in the back pressure chamber 5 increases.

[0063] Additionally, in one embodiment, such as Figure 13 As shown, the distance d1 between the lower end face of the support body 42 and the top of the bracket assembly 3 is less than the axial height d2 of the air inlet groove, to ensure that the air inlet groove 411 is connected to the air inlet channel when the support assembly 4 moves downward. At the same time, it adds forced constraint to the overturning motion of the moving scroll plate 2 to prevent excessive overturning. When the back pressure is sufficient to balance the gas force, the moving scroll plate 2 resumes stable operation. The support assembly moves upward under the force of the elastic element 6 and the gas force of the high-pressure chamber. The airflow channels on the bracket assembly 3 and the support feet are disconnected, isolating the back pressure chamber 5 from the high-pressure chamber of the shell to prevent excessive back pressure.

[0064] The second type:

[0065] In a specific embodiment, such as Figure 11 and Figure 12 As shown, the first gas channel 31 includes an airflow channel. The input end of the airflow channel is located on the outer surface of the support assembly 3 and communicates with the flow channel 33. The airflow channel extends radially and passes through the second gas channel 41, with its output end facing the oil sump. The oil sump is communicated with the back pressure chamber 5. The second gas channel 41 includes a throttling groove, which is formed on the outer surface of the support foot 43. Under the action of the moving scroll plate 2, the throttling groove can communicate with the airflow channel.

[0066] Specifically, the throttling groove is a series of grooves formed on the outside of the support foot 43. In the initial state, when the moving scroll plate 2 and the support assembly 4 are balanced, the support foot 43 and the airflow channel are in close contact without any gap. When the moving scroll plate 2 tilts, it pushes the support assembly 4 downward. At this time, the throttling groove on the outside of the support foot 43 is in close contact with the airflow channel. Since the throttling groove is a groove, a gap is generated between the support foot 43 and the airflow channel, and high-pressure gas can be transmitted through this gap.

[0067] In this embodiment, neither the first gas channel 31 nor the second gas channel 41 is directly connected to the back pressure chamber 5. Instead, they are connected via an oil sump. Since the oil sump can also connect to the back pressure chamber 5 during pump operation, this embodiment utilizes the characteristics of the oil sump to achieve high-pressure gas transmission. This method of high-pressure gas transmission results in a slower pressure change in the back pressure chamber, preventing airflow impact.

[0068] Example 2

[0069] This embodiment provides a compressor, which includes the pump body structure described in Embodiment 1.

[0070] By adopting the pump body structure in Example 1, regardless of the operating conditions of the compressor or how the pressure changes, different adaptive back pressures can be generated through the pump body structure in Example 1, maintaining the back pressure within a suitable range, reducing the power consumption of the compressor, meeting the requirements for stable operation of the pump body, and enabling the compressor to operate stably under various conditions and operating conditions, thereby improving the compression efficiency and volumetric efficiency of the compressor.

[0071] Example 3

[0072] This embodiment provides an air conditioner, which includes the compressor described in Embodiment 2.

[0073] In summary, it is readily understood by those skilled in the art that, without conflict, the aforementioned advantageous technical features can be freely combined and superimposed.

[0074] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention in any way. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention shall still fall within the scope of the technical solution of the present invention.

Claims

1. A pump body structure, characterized in that, The pump body structure includes a fixed scroll plate, a moving scroll plate, a support assembly, and a supporting assembly. The fixed scroll plate, the moving scroll plate, and the support assembly form a back pressure chamber. The supporting assembly is inserted into the support assembly and can move up and down under the action of the moving scroll plate. A first gas channel is opened on the support assembly, and a second gas channel is opened on the supporting assembly. The up and down movement of the supporting assembly can adjust the communication area between the first gas channel and the second gas channel, thereby adjusting the amount of gas flowing into the back pressure chamber through the first gas channel or the second gas channel. The support assembly includes a support body and a plurality of support legs disposed below the support body; the bracket assembly has grooves corresponding to the support legs one by one, the support legs are inserted into the grooves and can move up and down along the grooves under the action of the moving scroll plate; The side of the support assembly is provided with a flow groove along the axial direction, through which high-pressure gas can flow to the first gas channel; The first gas channel includes an air inlet channel, the input end of which is located on the outer surface of the support assembly and communicates with the flow channel, and the output end of the air inlet channel extends radially toward the second gas channel; The second gas channel includes an air inlet groove and a flow hole. The air inlet groove is formed on the outer surface of the support foot and extends into the support foot. One end of the flow hole is connected to the air inlet groove, and the other end of the flow hole is connected to the back pressure chamber.

2. The pump body structure according to claim 1, characterized in that, The pump body structure also includes an elastic element, which is located at the bottom of the settling tank, and the bottom of the support foot contacts the elastic element.

3. The pump body structure according to claim 1, characterized in that, The distance between the lower end face of the support body and the top of the bracket assembly is less than the axial height of the air inlet slot.

4. The pump body structure according to claim 3, characterized in that, The support assembly has a lubricating oil channel, one end of which is connected to the air inlet groove, and the other end of which extends to the mating surface between the support foot and the groove. The gas flowing out through the air inlet groove can enter the back pressure chamber through the flow hole, and the lubricating oil flowing out through the air inlet groove can flow along the lubricating oil channel to the mating surface between the support foot and the sink.

5. The pump body structure according to claim 4, characterized in that, The lubricating oil channel includes a first oil groove and a second oil groove. The first oil groove includes a plurality of circular grooves that are opened around the circumference of the support foot. The plurality of circular grooves are evenly distributed along the axial direction on the outer surface of the support foot. The second oil groove is opened along the axial direction of the support foot. The second oil groove is connected to the air intake groove, and each circular groove is connected to the second oil groove.

6. The pump body structure according to claim 2, characterized in that, The bottom of the settling tank extends into a first pressure channel, and the elastic element has a second pressure channel, with the first pressure channel and the second pressure channel connected.

7. The pump body structure according to any one of claims 1-5, characterized in that, The first gas channel includes an airflow channel, the input end of which is located on the outer surface of the support assembly and communicates with the flow channel. The airflow channel extends radially and passes through the second gas channel, and its output end faces the oil sump. The oil sump is communicated with the back pressure chamber.

8. The pump body structure according to claim 7, characterized in that, The second gas passage includes a throttling groove, which is formed on the outer surface of the support foot; under the action of the moving vortex disk, the throttling groove can communicate with the airflow passage.

9. A compressor, characterized in that, The compressor includes the pump body structure as described in any one of claims 1-8.

10. An air conditioner, characterized in that, The air conditioner includes the compressor as described in claim 9.

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