A pump body assembly, compressor and air conditioner using the same

Abstract

The application discloses a pump body assembly, a compressor and an air conditioner using the same. The pump body assembly comprises a static scroll disc, a dynamic scroll disc and a sealing unit. The static scroll disc and the dynamic scroll disc are matched, and the sealing unit is arranged between the tooth bottom of the static scroll disc and the tooth top of the dynamic scroll disc. The sealing unit comprises a sealing sheet, and a plurality of telescopic sealing structures are arranged on the sealing sheet in a spaced manner. One side of the telescopic sealing structure is arranged in the tooth bottom of the static scroll disc, the other side is in contact with the tooth top of the dynamic scroll disc, and the telescopic sealing structure can be adjusted in the axial direction to make the sealing sheet tightly adhere to the tooth top of the scroll disc. With the operation of the pump body assembly, the dynamic scroll disc will fluctuate in the axial direction, and the sealing unit is adjusted along with the fluctuation of the dynamic scroll disc, so that the sealing sheet always tightly adheres to the tooth top of the dynamic scroll disc, and the cold energy is prevented from leaking in the operation process. After the long-term operation of the compressor, the tooth top of the dynamic scroll disc is abraded, and the axial leakage of the compressor is increased. The sealing unit can play an axial compensation role, and the reliability of the compressor is improved.

Description

Technical Field

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

[0002] Scroll compressors are widely used in various air conditioners and refrigeration units due to their high efficiency, small size, light weight, and low noise. A scroll compressor mainly consists of two meshing, moving and stationary scrolls with a two-function equation. During compression, the stationary scroll is fixed to the frame, while the moving scroll, driven by the drive unit and constrained by an anti-rotation mechanism, revolves around the axial line of the stationary scroll. Therefore, the position and volume of the crescent-shaped cavity formed between the two scrolls constantly change. When gas enters the first crescent-shaped sealed chamber from the intake port, the sealed chamber gradually moves from the periphery to the center of the scroll as the moving scroll rotates, and its volume continuously decreases. Thus, the gas sealed in these chambers is continuously compressed, causing its pressure to gradually increase. Understanding the working principle of a scroll compressor reveals that to ensure optimal sealing of each crescent-shaped sealed chamber, effective sealing at the axial meshing end faces of the scrolls is crucial.

[0003] Based on the characteristics of scroll compressor motion, the axial force generated by the compressed gas between the scroll pump bodies tends to cause axial separation between the moving and stationary scroll plates, leading to leakage problems, which is a current challenge. Existing common techniques involve designing a back pressure chamber on the back of the moving scroll plate to introduce pressure from the compression chamber of the moving scroll plate, thus creating back pressure and achieving a seal. However, the back pressure is low under low operating conditions or at low frequencies, causing the axial seal to fail. This is the main reason why compressors have poor energy efficiency at low frequencies and low operating conditions. Secondly, some methods involve designing grooves on the tooth tips of the moving scroll plate to insert wear-resistant parts. However, as the moving scroll plate is a crucial active component in the compressor, grooves on the thin tooth tips will significantly weaken the strength of the moving plate, easily causing the pump body teeth to break. Summary of the Invention

[0004] In view of this, the present invention provides a pump body assembly, a compressor, and an air conditioner using the same, which solves the technical problems of poor energy efficiency at low frequencies and weakened strength of the moving scroll plate in traditional pump body structures when improving the sealing of the moving and stationary scroll plates.

[0005] To address the aforementioned problems, according to one aspect of this application, an embodiment of the present invention provides a pump body assembly, the pump body assembly including a stationary scroll plate, a moving scroll plate, and a sealing unit, wherein the stationary scroll plate and the moving scroll plate cooperate, and the sealing unit is located between the tooth root of the stationary scroll plate and the tooth tip of the moving scroll plate; the sealing unit includes a sealing sheet, on which a plurality of retractable sealing structures are spaced apart, one side of the retractable sealing structure is disposed within the tooth root of the stationary scroll plate, and the other side contacts the tooth tip of the moving scroll plate, and the retractable sealing structure is axially adjustable such that the sealing sheet is tightly attached to the tooth tip of the scroll plate.

[0006] In some embodiments, the retractable sealing structure includes a first horizontal surface, a second horizontal surface, and a connecting surface. One end of the connecting surface is connected to a first end of the first horizontal surface, and the other end of the connecting surface is connected to a second end of the second horizontal surface, such that the first horizontal surface, the second horizontal surface, and the connecting surface cooperate to form a Z-shaped structure. The first end of the first horizontal surface and the second end of the second horizontal surface are two ends on different sides of the retractable sealing structure.

[0007] In some embodiments, the bottom surface of the stationary vortex disk is provided with a vortex groove structure, the vortex groove structure extending from the suction chamber of the pump body assembly to the exhaust chamber; the retractable sealing structure is located inside the vortex groove structure, and the first horizontal plane or the second horizontal plane is in contact with the bottom of the vortex groove structure.

[0008] In some embodiments, the vortex groove structure includes multiple first vortex grooves, which are connected sequentially to form a broken line; the number of first vortex grooves is greater than the number of compression chambers in the pump body assembly.

[0009] In some embodiments, the vortex groove structure includes multiple second vortex grooves, which are distributed radially at intervals.

[0010] In some embodiments, the depth of the first vortex groove located in the exhaust chamber is less than the depth of the first vortex groove located in the intake chamber.

[0011] In some embodiments, the height of the retractable sealing structure is greater than the depth of the vortex groove structure, such that after the retractable sealing structure and the vortex groove structure are engaged, the retractable sealing structure extends out of the vortex groove structure.

[0012] In some embodiments, the cross-section of the retractable sealing structure is a U-shaped structure or an M-shaped structure; when the retractable sealing structure is a U-shaped structure, the horizontal surface of the U-shaped structure contacts the sealing sheet; when the retractable sealing structure is an M-shaped structure, one of the vertical surfaces of the M-shaped structure is placed horizontally and then contacts the sealing sheet.

[0013] In some embodiments, the retractable sealing structure is made of a metal material that is elastic along the axial direction.

[0014] In some embodiments, the initial height H of the retractable sealing structure and the minimum groove depth h of the first vortex groove should satisfy: L = Hh; where L is the floating height of the retractable sealing structure.

[0015] In some embodiments, the sealing sheet is shaped to match the stationary vortex disk, and the gap between the sealing sheet and the teeth of the stationary vortex disk is disposed within the tooth base of the stationary vortex disk.

[0016] In some embodiments, the pump body assembly further includes a fixed bracket and a main shaft. The fixed bracket is located below the stationary scroll plate and the moving scroll plate. The main shaft passes through the fixed bracket and is connected to the moving scroll plate. There is a floating gap between the back of the moving scroll plate and the fixed bracket.

[0017] According to another aspect of this application, embodiments of the present invention provide a compressor that includes the pump body assembly described above.

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

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

[0020] The pump body assembly provided by the present invention includes a stationary vortex disk, a moving vortex disk, and a sealing unit. The stationary vortex disk and the moving vortex disk cooperate with each other, and the sealing unit is located between the tooth root of the stationary vortex disk and the tooth tip of the moving vortex disk. The sealing unit includes a sealing sheet with multiple retractable sealing structures spaced apart on it. One side of each retractable sealing structure is disposed within the tooth root of the stationary vortex disk, and the other side contacts the tooth tip of the moving vortex disk. The retractable sealing structure is axially adjustable so that the sealing sheet is tightly attached to the tooth tip of the vortex disk.

[0021] When the pump assembly starts, the moving scroll plate moves horizontally while the stationary scroll plate remains stationary. At this time, the retractable sealing structure in the sealing unit is in an extended state, with its lower surface pressing against the sealing plate and contacting the tooth tip of the moving scroll plate, forming a tooth tip seal. As the pump assembly gradually operates normally, the compressed gas between the stationary and moving scroll plates generates axial gas force. Simultaneously, the pressure introduced into the compression chamber from the back of the moving scroll plate forms a back pressure due to the floating of the moving plate. Since the gas force generated by one rotation of the moving scroll plate changes with the rotation angle, the back pressure also changes with the rotation angle of the moving scroll plate. Therefore, it is inevitable that the moving scroll plate will fluctuate axially. At this time, the sealing unit at the top of the stationary scroll plate also adjusts with the fluctuation of the moving scroll plate. Because multiple retractable sealing structures are distributed at intervals on the sealing plate, the forces of these multiple retractable sealing structures do not interfere with each other, ensuring that the sealing plate always remains tightly against the tooth tip of the moving scroll plate, guaranteeing no leakage of cold air during operation. After long-term operation of the compressor, the wear of the moving scroll plate tooth tip will increase the axial leakage of the compressor. The sealing unit can play an axial compensation role, increasing the reliability of the compressor. After the compressor has been running for a long time, the teeth of the moving scroll plate will undergo thermal expansion and deformation. The sealing unit will increase the axial clearance to avoid abnormal wear of the moving scroll plate.

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

[0023] The air conditioning appliance provided by the present invention is designed based on the above-mentioned compressor, and its beneficial effects are the same as those of the above-mentioned compressor components, 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 assembly provided in an embodiment of the present invention;

[0027] Figure 2 This is an enlarged view of a sealing unit in a pump body assembly provided by an embodiment of the present invention;

[0028] Figure 3This is a schematic diagram of the structure of a stationary vortex disk in a pump body assembly provided by an embodiment of the present invention;

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

[0030] Figure 5 This is a schematic diagram of another internal structure of the stationary vortex disk in a pump body assembly provided by an embodiment of the present invention;

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

[0032] Figure 7 This is a schematic diagram of the structure of a sealing sheet in a pump body assembly provided by an embodiment of the present invention;

[0033] Figure 8 This is a diagram showing the fit between a stationary vortex disk and a sealing unit in a pump body assembly according to an embodiment of the present invention.

[0034] in:

[0035] 1. Static vortex disk; 11. Vortex groove structure; 111. First vortex groove; 112. Second vortex groove;

[0036] 2. Moving scroll plate;

[0037] 3. Sealing unit; 31. Sealing sheet; 32. Telescopic sealing structure; 321. First horizontal plane; 322. Second horizontal plane; 323. Connecting surface;

[0038] 4. Fixed bracket;

[0039] 5. Spindle;

[0040] 6. Inhalation chamber;

[0041] 7. Exhaust chamber. Detailed Implementation

[0042] 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.

[0043] 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.

[0044] 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.

[0045] Example 1

[0046] This embodiment provides a pump body assembly, such as Figure 1-8 As shown, the pump body assembly includes a stationary vortex disk 1, a moving vortex disk 2, and a sealing unit 3. The stationary vortex disk 1 and the moving vortex disk 2 cooperate with each other, and the sealing unit 3 is located between the tooth root of the stationary vortex disk 1 and the tooth tip of the moving vortex disk 2. The sealing unit 3 includes a sealing sheet 31, on which multiple retractable sealing structures 32 are distributed at intervals. One side of the retractable sealing structure 32 is disposed in the tooth root of the stationary vortex disk 1, and the other side contacts the tooth tip of the moving vortex disk 2. The retractable sealing structure 32 is axially adjustable so that the sealing sheet 31 is tightly attached to the tooth tip of the moving vortex disk 2.

[0047] Specifically, multiple retractable sealing structures 32 are spaced apart on the sealing sheet 31, and the multiple retractable sealing structures 32 do not affect each other.

[0048] When the pump assembly starts, the moving scroll 2 moves horizontally while the stationary scroll 1 remains stationary. At this time, the retractable sealing structure 32 in the sealing unit 3 is in an extended state, with its lower surface pressing against the sealing plate 31 and contacting the tooth tip of the moving scroll 2 to form a tooth tip seal. As the pump assembly gradually operates normally, the compressed gas between the stationary scroll 1 and the moving scroll 2 generates axial gas force. At the same time, the pressure introduced into the compression chamber from the back of the moving scroll 2 forms the back pressure of the floating moving scroll. Since the gas force generated by the moving scroll 2 changes with the rotation angle, the back pressure also changes with the rotation angle of the moving scroll 2. Therefore, the moving scroll 2 will inevitably fluctuate axially. At this time, the sealing unit 3 at the top of the stationary scroll 1 also adjusts with the fluctuation of the moving scroll 2. Since multiple retractable sealing structures 32 are distributed at intervals on the sealing plate 31, the forces of the multiple retractable sealing structures 32 do not interfere with each other, so that the sealing plate 31 always adheres tightly to the tooth tip of the moving scroll 2 as it floats, ensuring that the cold energy does not leak during operation. After prolonged operation, wear on the teeth of the moving scroll 2 will increase axial leakage. The sealing unit 3 can provide axial compensation, increasing the reliability of the compressor. After long-term operation, the teeth of the moving scroll 2 will undergo thermal expansion and deformation. The sealing unit 3 increases the axial clearance to prevent abnormal wear of the moving scroll 2.

[0049] Compared to designing a back pressure chamber on the back of the moving scroll to introduce pressure from the compression chamber of the driven scroll to form back pressure and achieve sealing of the moving scroll, the pump body structure provided in this embodiment has a smaller back pressure when the compressor is operating at low conditions or low frequency, and the axial sealing effect is not affected. Compared to designing grooves on the tooth tops of the moving scroll to place wear-resistant parts, the pump body structure provided in this embodiment does not damage the structure of the moving scroll itself, and therefore does not weaken the strength of the moving scroll.

[0050] In a specific embodiment, such as Figure 2 and Figure 6 As shown, the retractable sealing structure 32 includes a first horizontal surface 321, a second horizontal surface 322, and a connecting surface 323. One end of the connecting surface 323 is connected to the first end of the first horizontal surface 321, and the other end of the connecting surface 323 is connected to the second end of the second horizontal surface 322, so that the first horizontal surface 321, the second horizontal surface 322, and the connecting surface 323 cooperate to form a Z-shaped structure; wherein, the first end of the first horizontal surface 321 and the second end of the second horizontal surface 322 are the two ends on different sides of the retractable sealing structure 32.

[0051] More specifically, the first horizontal plane 321 and the second horizontal plane 322 are arranged in parallel, with the first ends of the first horizontal plane 321 and the first ends of the second horizontal plane 322 aligned, and the second ends of the first horizontal plane 321 and the second horizontal plane 322 aligned. The first horizontal plane 321 and the second horizontal plane 322 are connected by an inclined connecting surface 323. During the installation process, the first horizontal plane 321 is horizontally positioned inside the stationary volute 1, and the second horizontal plane 322 is tightly fitted with the sealing plate 31. Alternatively, the second horizontal plane 322 can be horizontally positioned inside the stationary volute 1, and the first horizontal plane 321 can be tightly fitted with the sealing plate 31. Regardless of how the pump assembly operates or at what frequency, either the first horizontal plane 321 or the second horizontal plane 322 is always tightly fitted with the sealing plate 31, and the sealing plate 31 is always tightly fitted with the tooth tip of the moving volute 2.

[0052] As can be seen from the above description, the longitudinal section of the retractable sealing structure 32 provided in this embodiment is a Z-shaped structure. When the compressor is running, the pressure corresponding to each compression chamber in the pump body is different at each moment. Moreover, each compression chamber is divided into inner and outer compression chambers according to the horizontal rotation of the moving scroll plate 2. The pressures of the inner and outer compression chambers are also different. Different pressures acting on the sealing sheet 31 can easily cause the sealing sheet 31 to overturn. This embodiment adopts a surface-to-surface contact method to avoid overturning.

[0053] In a specific embodiment, the bottom surface of the stationary vortex disk 1 is provided with a vortex groove structure 11, which extends from the suction chamber 6 of the pump body assembly to the exhaust chamber 7; the retractable sealing structure 32 is located inside the vortex groove structure 11, and the first horizontal surface 321 or the second horizontal surface 322 is in contact with the bottom of the vortex groove structure 11.

[0054] Specifically, the general outline of the vortex groove structure 11 matches that of the stationary vortex disk 1. A groove is formed on the tooth bottom surface of the stationary vortex disk 1, extending from the intake chamber 6 to the exhaust chamber 7. This groove is the vortex groove structure 11. The first horizontal surface 321 or the second horizontal surface 322 of the retractable sealing structure 32 is fitted into the groove with a clearance.

[0055] There are several ways to specifically create the vortex groove structure 11, such as:

[0056] The first type: In a specific embodiment, such as Figure 3 and Figure 4 As shown, the vortex groove structure 11 includes multiple first vortex grooves 111, which are connected in sequence to form a broken line; the number of first vortex grooves 111 is greater than the number of compression chambers of the pump body assembly.

[0057] Specifically, at the bottom of the stationary scroll plate 1, in the gap formed between adjacent scroll teeth, a first scroll groove 111 is formed in sequence. The first scroll groove 111 are all straight grooves. Straight grooves are easy to process. And the continuous grooves designed with the scroll tooth profile are either located in the middle of the tooth or at the edge of the tooth. During the operation of the moving scroll plate 2, the sealing sheet 31 is subjected to uneven force and may warp and leak. In this embodiment, multiple first scroll grooves 111 are connected in sequence to form a broken line, which can avoid uneven force on the sealing sheet 31 and warping and leakage.

[0058] In addition, the pressure of two adjacent pairs of compression chambers is different at the same time, so the required sealing gap is also different. The number of first vortex grooves 111 is greater than the number of compression chambers of the pump body assembly to ensure that each chamber is sealed.

[0059] The second method: In specific embodiments, such as Figure 5 As shown, the vortex groove structure 11 includes multiple second vortex grooves 112, which are distributed radially at intervals.

[0060] For compressors with large displacement and heavy-duty operation, the scroll groove structure 11 can be designed as multiple second scroll grooves 112 extending radially. This configuration can withstand greater pressure.

[0061] Of course, there are other ways to set the vortex groove structure 11, which will not be introduced here.

[0062] In a specific embodiment, the depth of the first vortex groove 111 located in the exhaust chamber 7 is less than the depth of the first vortex groove 111 located in the intake chamber 6.

[0063] The exhaust pressure in the exhaust chamber 7 is greater than the intake pressure in the intake chamber 6, and the scroll compressor is prone to tipping over on the intake side due to uneven force during actual operation. Therefore, in this embodiment, the depth of the first scroll groove 111 in the intake chamber 6 is set to be shallower, so that the sealing strip can be adjusted to seal more tightly.

[0064] In a specific embodiment, the height of the retractable sealing structure 32 is greater than the depth of the vortex groove structure 11, so that after the retractable sealing structure 32 and the vortex groove structure 11 are engaged, the retractable sealing structure 32 extends out of the vortex groove structure 11.

[0065] Conversely, the Z-shaped retractable sealing structure 32, designed to correspond to the shape of the vortex groove structure 11, allows it to be fitted into the first vortex groove 111 at the bottom of the stationary vortex disk 1 with a clearance fit. Importantly, the height of the Z-shaped retractable sealing structure 32 is greater than the depth of the first vortex groove 111 at the bottom of the stationary vortex disk 1, ensuring that the retractable sealing structure 32, after being placed in the first vortex groove 111, is higher than the bottom surface of the stationary vortex disk 1. The retractable sealing structure 32 is made of steel with a Z-shaped cross-section, contacting the sealing sheet 31. This Z-shaped design ensures that the sealing sheet 31 only experiences axial compensation displacement when subjected to gas force, preventing lateral overturning and guaranteeing the stability of the sealing unit 3. Furthermore, it ensures uniform stress distribution, extends service life, and provides elasticity.

[0066] Regarding the specific structure of the retractable sealing structure 32, in addition to the Z-shaped structure mentioned above, the retractable sealing structure 32 can also be in other shapes, as long as it can ensure that surface contact is used.

[0067] In a specific embodiment, the cross-section of the retractable sealing structure 32 is a U-shaped structure, and the horizontal surface of the U-shaped structure is in contact with the sealing sheet 31.

[0068] In another embodiment, the cross-section of the retractable sealing structure 32 is an M-shaped structure, and one of the vertical surfaces of the M-shaped structure is placed horizontally and contacts the sealing sheet 31.

[0069] In a specific embodiment, the retractable sealing structure 32 is made of a metal material, such as steel, that is elastic along the axial direction.

[0070] In a specific embodiment, the initial height H of the retractable sealing structure 32 and the minimum groove depth h of the first vortex groove 111 should satisfy: L = Hh; where L is the floating height of the retractable sealing structure 32.

[0071] To ensure that the sealing unit 3 can achieve axial compensation, the following design requirements should be met: the required floating clearance is the difference between the initial height of the telescopic sealing structure 32 and the minimum groove depth of the first vortex groove 111.

[0072] In addition, the initial force of the retractable sealing structure 32 should be less than the maximum back pressure of the compressor.

[0073] In a specific embodiment, such as Figure 7 As shown, the sealing sheet 31 matches the shape of the stationary vortex disk 1, and the gap of the sealing sheet 31 is disposed within the tooth root of the stationary vortex disk 1.

[0074] In a specific embodiment, such as Figure 1As shown, the pump body assembly also includes a fixed bracket 4 and a main shaft 5. The fixed bracket 4 is located below the stationary scroll plate 1 and the moving scroll plate 2. The main shaft 5 passes through the fixed bracket 4 and is connected to the moving scroll plate 2. There is a floating gap between the back of the moving scroll plate 2 and the fixed bracket 4.

[0075] More specifically, the fixed bracket 4 is fixedly connected to the compressor housing to support the stationary scroll 1 and the moving scroll 2; the main shaft 5 is driven by a motor to drive the moving scroll 2; the stationary scroll 1 and the moving scroll 2 mesh to generate pressure, and the sealing unit 3 is between the stationary scroll 1 and the moving scroll 2 to play a sealing role.

[0076] Example 2

[0077] This embodiment provides a compressor, which includes the pump assembly described in Embodiment 1.

[0078] The compressor provided in this embodiment includes the pump assembly in Embodiment 1, and therefore has all the beneficial effects of the pump assembly.

[0079] When the compressor starts, the motor drives the main shaft 5 to rotate, which in turn drives the moving scroll 2 to move horizontally while the stationary scroll 1 remains stationary. At this time, the telescopic sealing structure 32 is in an extended state, with its upper surface pressing against the sealing plate 31 and contacting the tooth tip of the moving scroll 2 to form a tooth tip seal. Then, as the compressor gradually operates normally, the compressed gas between the stationary scroll 1 and the moving scroll 2 generates axial gas force. Simultaneously, the pressure introduced into the compression chamber from the back of the moving scroll 2 forms a back pressure due to the floating of the moving scroll. Since the gas force generated by the moving scroll 2 changes with the rotation angle, the back pressure also changes with the rotation angle of the moving scroll 2. Therefore, it is inevitable that the moving scroll 2 will fluctuate in the axial direction. At this time, the sealing unit 3 at the top of the stationary scroll 1 also adjusts with the fluctuation of the moving scroll 2. Because the forces of the multiple telescopic sealing structures 32 do not interfere with each other, the sealing plate 31 remains tightly attached to the tooth tip of the moving scroll 2 as it floats, ensuring that no cold air leakage occurs during operation. After prolonged operation, wear on the teeth of the moving scroll 2 will increase axial leakage. The sealing unit 3 can provide axial compensation, increasing the compressor's reliability. After extended operation, thermal expansion and deformation of the teeth of the moving scroll 2 can increase the axial clearance, preventing abnormal wear of the moving scroll 2 and thus improving the compressor's performance and reliability.

[0080] Example 3

[0081] This embodiment provides an air conditioner, which includes the compressor described in Embodiment 2.

[0082] The air conditioner provided in this embodiment includes the compressor in embodiment 2, and therefore has all the beneficial effects of the compressor and pump assembly.

[0083] 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.

[0084] 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 assembly, characterized in that, The pump body assembly includes a stationary vortex disk, a moving vortex disk, and a sealing unit. The stationary vortex disk and the moving vortex disk cooperate, and the sealing unit is located between the tooth root of the stationary vortex disk and the tooth tip of the moving vortex disk. The sealing unit includes a sealing plate with multiple retractable sealing structures spaced apart on it. One side of each retractable sealing structure is disposed within the tooth root of the stationary vortex disk, and the other side contacts the tooth tip of the moving vortex disk. The retractable sealing structure is axially adjustable so that the sealing plate is tightly attached to the tooth tip of the vortex disk. The cross-section of the retractable sealing structure is Z-shaped, U-shaped, or M-shaped and is a metal structure with axial elasticity.

2. The pump body assembly according to claim 1, characterized in that, The retractable sealing structure includes a first horizontal surface, a second horizontal surface, and a connecting surface. One end of the connecting surface is connected to the first end of the first horizontal surface, and the other end of the connecting surface is connected to the second end of the second horizontal surface, so that the first horizontal surface, the second horizontal surface, and the connecting surface cooperate to form a Z-shaped structure. The first end of the first horizontal surface and the second end of the second horizontal surface are the two ends of different sides of the retractable sealing structure.

3. The pump body assembly according to claim 2, characterized in that, The bottom surface of the stationary vortex disk is provided with a vortex groove structure, which extends from the suction chamber of the pump body assembly to the exhaust chamber; the retractable sealing structure is located inside the vortex groove structure, and the first horizontal plane or the second horizontal plane is in contact with the bottom of the vortex groove structure.

4. The pump body assembly according to claim 3, characterized in that, The vortex groove structure includes multiple first vortex grooves, which are connected sequentially to form a broken line; the number of first vortex grooves is greater than the number of compression chambers in the pump body assembly.

5. The pump body assembly according to claim 3, characterized in that, The vortex groove structure includes multiple second vortex grooves, which are distributed radially at intervals.

6. The pump body assembly according to claim 4, characterized in that, The depth of the first vortex groove located in the exhaust chamber is less than the depth of the first vortex groove located in the intake chamber.

7. The pump body assembly according to any one of claims 3-6, characterized in that, The height of the retractable sealing structure is greater than the depth of the vortex groove structure, so that after the retractable sealing structure and the vortex groove structure are engaged, the retractable sealing structure extends out of the vortex groove structure.

8. The pump body assembly according to claim 1, characterized in that, When the retractable sealing structure is a U-shaped structure, the horizontal surface of the U-shaped structure contacts the sealing sheet; when the retractable sealing structure is an M-shaped structure, one of the vertical surfaces of the M-shaped structure is placed horizontally and then contacts the sealing sheet.

9. The pump body assembly according to claim 4, characterized in that, The initial height H of the retractable sealing structure and the minimum groove depth h of the first vortex groove should satisfy: L=Hh; where L is the floating height of the retractable sealing structure.

10. The pump body assembly according to any one of claims 1-6, characterized in that, The sealing sheet is shaped to match the stationary vortex disk, and the gap between the sealing sheet and the teeth of the stationary vortex disk is located within the tooth base of the stationary vortex disk.

11. The pump body assembly according to any one of claims 1-6, characterized in that, The pump body assembly also includes a fixed bracket and a main shaft. The fixed bracket is located below the stationary scroll plate and the moving scroll plate. The main shaft passes through the fixed bracket and is connected to the moving scroll plate. There is a floating gap between the back of the moving scroll plate and the fixed bracket.

12. A compressor, characterized in that, The compressor includes the pump assembly as described in any one of claims 1-11.

13. An air conditioner, characterized in that, The air conditioner includes the compressor as described in claim 12.

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