Centrifugal machine assembly, compressor and air conditioner

Abstract

The utility model discloses a centrifugal machine assembly, a compressor and an air conditioner. The centrifugal machine assembly comprises a shell and an impeller, the shell is provided with a pivoting hole, and a first wall parallel to the axis of the pivoting hole and a second wall obliquely or perpendicularly arranged relative to the first wall are formed on the inner wall of the pivoting hole; the impeller is rotatably arranged on the shell, at least part of the impeller is contained in the pivoting hole, and a third wall right opposite to the first wall and a fourth wall right opposite to the second wall are formed on the impeller; wherein a first sealing part is formed on at least one of the first wall and the third wall, and a second sealing part is formed on at least one of the second wall and the fourth wall. According to the centrifugal machine assembly, the sealing structures are arranged between the first wall and the third wall and between the second wall and the fourth wall respectively, so that the leakage loss of gas is reduced, the leakage loss of the gas can be further reduced through the first wall and the second wall which are relatively inclined or perpendicular, and the efficiency of the centrifugal machine assembly is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of centrifuges, in particular to a centrifuge component, a compressor and an air conditioner. Background Art

[0002] Centrifuges are widely used in the industrial field, mainly in high-speed rotating machines such as centrifugal refrigeration compressors, air compressors, and blowers. The common feature of these is that the impeller rotates at high speed to centrifugally compress the gas. While the impeller is compressing, due to the gap between the rotor and the stator, the gas in the impeller compressor will leak along the rotor and the stator, causing leakage losses and low efficiency of the compressor. For example, when an existing centrifuge is working, a portion of the gas will flow back to the impeller air inlet from the gap between the impeller and the impeller's sealing structure, causing leakage losses. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the utility model is to provide a centrifuge assembly. According to the centrifuge assembly of the utility model, a sealing structure is arranged between the first wall and the third wall and between the second wall and the fourth wall respectively, so as to reduce the leakage loss of gas. At the same time, the first wall and the second wall which are relatively inclined or vertical can increase the turning area in the gas flow path, further reduce the leakage loss of gas, and improve the efficiency of the centrifuge assembly.

[0004] The utility model also provides a compressor comprising the centrifuge assembly.

[0005] The utility model also provides an air conditioner comprising the compressor.

[0006] According to the utility model, a centrifuge assembly includes a housing and an impeller, wherein the housing has a pivot hole, and the inner wall of the pivot hole is formed with a first wall parallel to the axis of the pivot hole and a second wall inclined or vertically arranged relative to the first wall; the impeller is rotatably arranged in the housing and at least part of the impeller is accommodated in the pivot hole, and the impeller is formed with a third wall directly opposite to the first wall and a fourth wall directly opposite to the second wall; wherein a first sealing component is formed on at least one of the first wall and the third wall, and a second sealing component is formed on at least one of the second wall and the fourth wall.

[0007] According to the centrifuge assembly of the utility model, by arranging corresponding first sealing components and second sealing components between the first wall and the third wall, and between the second wall and the fourth wall, the sealing performance of the centrifuge assembly during rotation can be significantly improved, which helps to reduce leakage losses caused by gas flowing back to the air inlet from the gap between the impeller and the casing, thereby improving the efficiency and reliability of the centrifuge, and further improving the energy efficiency ratio of the centrifuge, which can save energy and operating costs.

[0008] According to an embodiment of the present invention, the second sealing component is constructed of a plurality of first sealing teeth arranged on the second wall and a plurality of second sealing teeth arranged on the fourth wall, and the plurality of first sealing teeth and the plurality of second sealing teeth are staggered in the extension direction of the second wall.

[0009] According to an embodiment of the present utility model, cross-sections of the first sealing tooth and the second sealing tooth in the radial direction of the pivot hole are respectively configured as rectangles.

[0010] According to an embodiment of the present invention, the distance between the tooth top of the first sealing tooth and the fourth wall is d1, the distance between the tooth top of the second sealing tooth and the second wall is d2, and the following condition is satisfied: d1 = d2 ≥ 0.5 mm.

[0011] According to an embodiment of the present invention, the distance between adjacent first sealing teeth and second sealing teeth is d3, and d3≥0.25 mm.

[0012] According to an embodiment of the present invention, the first wall is configured as a plurality of walls that are arranged in parallel with each other and have different diameters, and the third wall is configured as a plurality of walls and each of the third walls is respectively arranged corresponding to the first wall.

[0013] According to an embodiment of the present invention, the first sealing component is configured as a plurality of third sealing teeth which are arranged on at least one of the first wall and the third wall and are spaced apart in the axial direction.

[0014] According to an embodiment of the present invention, the third sealing tooth is disposed on the first wall and protrudes toward the third wall, and the distance between the end of the third sealing tooth and the third wall is d4, and satisfies: d4≥0.2 mm.

[0015] According to one embodiment of the utility model, the impeller includes a base, blades and a connecting ring, the blades are structured as a plurality and are arranged on the outer periphery of the base; the connecting ring is arranged on the outer periphery of the plurality of blades and are respectively connected to the plurality of blades, and the outer surface of the connecting ring is formed with the third wall and the fourth wall.

[0016] The compressor of the present utility model is briefly described below.

[0017] The compressor according to the utility model includes the centrifuge assembly in the above embodiment. Since the compressor according to the utility model is provided with the centrifuge assembly in the above embodiment, when the centrifuge assembly is assembled, the arrangement of the first sealing component and the second sealing component reduces the gas leakage loss of the centrifuge assembly, thereby improving the efficiency of the compressor.

[0018] The air conditioner according to the utility model is briefly described below.

[0019] The air conditioner according to the utility model includes the compressor in the above embodiment. Since the air conditioner according to the utility model is provided with the compressor in the above embodiment, when the compressor is assembled to the air conditioner, the efficiency of the air conditioner in regulating the temperature can be improved.

[0020] In summary, the centrifuge assembly is provided with a pivot hole on the casing, and the impeller is rotatably accommodated in the pivot hole, thereby improving the compactness of the structure. A first wall and a second wall which are perpendicular or inclined to each other are formed on the inner wall of the pivot hole, and a corresponding third wall and a fourth wall are formed on the impeller, wherein the first wall is parallel to the axis of the pivot hole and defines a first gap with the third wall, and a third sealing tooth is arranged on the first wall and protrudes toward the third wall in the first gap, and the third sealing tooth extends the flow path of the gas in the third gap and can produce a certain obstruction to the flow of the gas, thereby reducing the leakage loss of the gas through the first gap; the second wall and the fourth wall define a second gap, and a first sealing tooth is arranged on the second wall and protrudes toward the fourth wall and a second sealing tooth is arranged on the fourth wall and protrudes toward the second wall in the second gap, and the second sealing tooth and the first sealing tooth are staggered in the extension direction of the second gap, and the staggered first sealing tooth and the second sealing tooth can change the flow path of the gas in the second gap and produce resistance to the flow of the gas, and the sealing effect is good, and there is dynamic complementarity between the first sealing tooth and the second sealing tooth, which can ensure that the gas passing through the second gap is always reduced when the impeller is offset, thereby further improving the efficiency of the centrifuge. In addition, the impeller is provided with a plurality of blades on at least part of the periphery of the base, and the connecting ring is connected to the plurality of blades and used to define the third wall and the fourth wall. The arrangement of the connecting ring can improve the structural strength of the impeller, thereby improving the reliability of the centrifuge assembly.

[0021] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0023] Figure 1 is a structural diagram of a centrifuge assembly according to an embodiment of the utility model;

[0024] Figure 2 is a structural diagram of an impeller according to an embodiment of the utility model;

[0025] Figure 3 is based on Figure 1 The middle circle shows a partial enlarged view of A;

[0026] Figure 4 It is a schematic diagram of the cooperation between the first sealing tooth and the second sealing tooth according to an embodiment of the utility model;

[0027] Figure 5 It is a structural schematic diagram of a third sealing tooth according to an embodiment of the utility model.

[0028] Reference numerals:

[0029] Centrifuge assembly 1;

[0030] Shell 11, first wall 111, second wall 112;

[0031] Impeller 12, third wall 121, fourth wall 122, base 123, blades 124, connecting ring 125;

[0032] A second sealing component 13, a first sealing tooth 131, and a second sealing tooth 132;

[0033] The third sealing teeth 141 , the first gap 101 , and the second gap 102 . DETAILED DESCRIPTION

[0034] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0035] Centrifuges are widely used in the industrial field, mainly in high-speed rotating machines such as centrifugal refrigeration compressors, air compressors, and blowers. The common feature of these is that the impeller rotates at high speed to centrifugally compress the gas. While the impeller is compressing, due to the gap between the rotor and the stator, the gas in the impeller compressor will leak along the rotor and the stator, causing leakage losses and low efficiency of the compressor. For example, when an existing centrifuge is working, a portion of the gas will flow back to the impeller air inlet from the gap between the impeller and the impeller's sealing structure, causing leakage losses.

[0036] Reference below Figure 1-Figure 5A centrifuge assembly according to an embodiment of the present invention is described.

[0037] According to the utility model, the centrifuge assembly 1 includes a housing 11 and an impeller 12. The housing 11 has a pivot hole. The inner wall of the pivot hole is formed with a first wall 111 parallel to the axis of the pivot hole and a second wall 112 inclined or vertically arranged relative to the first wall 111; the impeller 12 is rotatably arranged in the housing 11 and at least a part of the impeller 12 is accommodated in the pivot hole. The impeller 12 is formed with a third wall 121 opposite to the first wall 111 and a fourth wall 122 opposite to the second wall 112; wherein, a first sealing component is formed on at least one of the first wall 111 and the third wall 121, and a second sealing component 13 is formed on at least one of the second wall 112 and the fourth wall 122.

[0038] According to the centrifuge assembly 1 of the utility model, a housing 11 is provided, a pivot hole is provided inside the housing 11, and an impeller 12 is rotatably provided in the pivot hole. A first wall 111 and a second wall 112 which is perpendicular or inclined relative to the first wall 111 are formed on the inner wall of the pivot hole, and the first wall 111 is parallel to the axis of the pivot hole, wherein the first wall 111 and the second wall 112 can be respectively constructed as a plurality of walls, and can be interconnected, for example, Figure 1 and Figure 3 As shown, the connection relationship between the first wall 111 and the second wall 112 can be simply understood as a first wall 111, a second wall 112, another first wall 111 and another second wall 112 are connected in sequence. The impeller 12 is formed with a third wall 121 and a fourth wall 122 corresponding to the first wall 111 and the second wall 112, respectively. It can be understood that the first wall 111 and the third wall 121 define a first gap 101, and the second wall 112 and the fourth wall 122 define a second gap 102. After the impeller 12 and the housing 11 are matched, the following can be formed. Figure 3 The first gap 101 and the second gap 102 are connected in sequence to the gas flow path shown. In this path, since the first wall 111 and the second wall 112 are in a relatively vertical relationship, the first gap 101 and the second gap 102 are also in a relatively vertical relationship. Therefore, there are multiple turning areas in the entire path of the gas flow of the centrifuge assembly 1. When the centrifuge assembly 1 is working, a part of the gas at the impeller 12 can pass through the second gap 102, the first gap 101, the second gap 102 and the first gap 101 in sequence and then return to the air inlet position of the impeller 12 to cause leakage loss, and the multiple turning areas in the path can slow down the gas flow rate and reduce the rate of gas leakage loss of the centrifuge assembly 1.

[0039] In addition, a first sealing component is provided on at least one of the first wall 111 and the third wall 121, and a second sealing component 13 is provided on at least one of the second wall 112 and the fourth wall 122. As shown in the figure, the first sealing component and the second sealing component 13 can respectively change the gas flow path between the first gap 101 and the second gap 102. As shown in the figure, for the first gap 101, a plurality of first sealing components can be provided on the first wall 111 and protrude toward the third wall 121 and are spaced apart in the extension direction of the first wall 111. The plurality of first sealing components can extend the gas flow path in the first gap 101, and at the same time increase the gas flow of the first gap 101 to the third wall 121. The resistance to gas flow can reduce the leakage loss caused by the gas flowing back to the air inlet from the first gap 101; for the second gap 102, the second sealing component 13 can be arranged on the second wall 112 and the fourth wall 122. The arrangement of the second sealing component 13 can extend the path of gas flow in the second gap 102, and at the same time increase the resistance of the second gap 102 to gas flow. The effect of the second sealing components 13 that cooperate with each other to increase the path and resistance is much greater than the solution of only arranging the first sealing component on one side of the first gap 101, which can reduce the leakage loss caused by the gas flowing back to the air inlet from the second gap 102, and further improve the efficiency of the centrifuge assembly 1.

[0040] The centrifuge assembly 1 can significantly improve the sealing performance of the centrifuge assembly 1 during rotation by arranging corresponding first and second sealing components 13 between the first wall 111 and the third wall 121, and between the second wall 112 and the fourth wall 122, which helps to reduce leakage losses caused by gas flowing back to the air inlet from the gap between the impeller 12 and the casing 11, thereby improving the efficiency and reliability of the centrifuge, and further improving the energy efficiency ratio of the centrifuge, which can save energy and operating costs.

[0041] According to one embodiment of the present invention, the second sealing component 13 is constructed as a plurality of first sealing teeth 131 arranged on the second wall 112 and a plurality of second sealing teeth 132 arranged on the fourth wall 122 , and the plurality of first sealing teeth 131 and the plurality of second sealing teeth 132 are staggered in the extension direction of the second wall 112 .

[0042] The second sealing component 13 is the main structure that affects the gas flow in the second gap 102. Specifically, the second sealing component 13 includes a first sealing tooth 131 and a second sealing tooth 132, wherein the first sealing tooth 131 is configured to be disposed on the second wall 112 and arranged at intervals in the extension direction of the second wall 112; the second sealing tooth 132 is configured to be disposed on the fourth wall 122 and arranged at intervals in the extension direction of the fourth wall 122. It should be noted that the plurality of second sealing teeth 132 and the plurality of first sealing teeth 131 need to be staggered in the extension direction of the second wall 112 to avoid mutual interference between the first sealing teeth 131 and the second sealing teeth 132. When the impeller 12 is assembled with the housing 11, the plurality of first sealing teeth 131 and the plurality of second sealing teeth 132 can mesh with each other to increase the flow path of the airflow in the second gap 102 and the resistance of the second gap 102 to the gas flow. The staggered sealing teeth can form a dynamic sealing barrier when the impeller 12 rotates, which can effectively prevent the leakage of fluid or gas between the impeller 12 and the housing 11. Especially at high-speed rotation, the mutual meshing of the staggered sealing teeth can further improve the sealing effect.

[0043] In addition, since the first sealing teeth 131 and the second sealing teeth 132 are arranged in an alternating manner, even if some of the sealing teeth fail due to wear, the remaining sealing teeth can still maintain a certain sealing effect, which increases the durability and reliability of the sealing structure and prolongs the service life of the centrifuge assembly 1.

[0044] According to an embodiment of the present invention, the cross-sections of the first sealing teeth 131 and the second sealing teeth 132 in the radial direction of the pivot hole are respectively configured as rectangles.

[0045] Since the first sealing teeth 131 and the second sealing teeth 132 are arranged in the second gap 102 defined by the second wall 112 and the fourth wall 122, the shapes of the first sealing teeth 131 and the second sealing teeth 132 and other structural features will affect the flow of gas in the second gap 102. Specifically, the cross-sectional shape of the first sealing teeth 131 and the second sealing teeth 132 in the radial direction of the pivot hole can be rectangular, triangular or trapezoidal, etc., wherein the first sealing teeth 131 and the second sealing teeth 132 in the radial direction of the pivot hole are preferably rectangular. Compared with other shapes, the first sealing teeth 131 and the second sealing teeth 132 in the radial cross-section are rectangular, which has a better effect on extending the gas flow path in the second gap 102 and hindering the flow of gas. At the same time, due to the structural characteristics of the impeller 12 and the housing 11, the second wall 112 and the fourth wall 122 are shorter in their respective extension directions, and the second gap 102 formed is also shorter, and the first sealing teeth 131 and the second sealing teeth 132 in the radial cross-section are rectangular. The structural strength is higher, therefore, the first sealing teeth 131 and the second sealing teeth 132 in the radial cross-section are rectangular, which can improve the reliability and service life of the centrifuge assembly 1.

[0046] At the same time, the design of the sealing teeth with a rectangular radial cross section can ensure that when the impeller 12 rotates, the contact area between the teeth is larger and more stable, which helps to form a more effective seal between the impeller 12 and the housing 11, reduce the leakage of fluid or gas, and thus improve the efficiency and performance of the centrifuge. The rectangular cross-sectional shape can also make the force on the sealing teeth more uniform, reduce the wear caused by stress concentration, and thus improve the wear resistance and service life of the first sealing teeth 131 and the second sealing teeth 132.

[0047] In addition, the rectangular cross-sectional shape is relatively simple and can be easily manufactured by cutting, stamping and other processing methods.

[0048] In some embodiments, the first sealing teeth 131 and the second sealing teeth 132 with a rectangular radial cross section have a certain dynamic complementary relationship when meshing, which can be simply understood as that after the impeller 12 is assembled with the housing 11, the impeller 12 will shake to a certain extent when rotating. For example, when the impeller 12 moves in the radial direction, for the second gap 102, Figure 3 As shown, since the plurality of first sealing teeth 131 and the plurality of second sealing teeth 132 are meshed with each other, no matter whether the impeller 12 moves radially upward or radially downward, the radial gap between at least one first sealing tooth 131 and an adjacent second sealing tooth 132 is reduced. Therefore, no matter how the impeller 12 moves, the amount of gas flowing back to the air inlet from the second gap 102 and the first gap 101 will eventually be reduced, thereby improving the efficiency of the centrifuge assembly 1.

[0049] According to an embodiment of the present invention, the distance between the tooth top of the first sealing tooth 131 and the fourth wall 122 is d1, the distance between the tooth top of the second sealing tooth 132 and the second wall 112 is d2, and the following condition is satisfied: d1=d2≥0.5mm.

[0050] Since the first sealing teeth 131 and the second sealing teeth 132 are both disposed between the second wall 112 and the fourth wall 122, the distance between the first sealing teeth 131 and the fourth wall 122 and the distance between the second sealing teeth 132 and the second wall 112 will affect the flow of gas or the rotation of the impeller 12. Figure 4As shown, the centrifuge assembly 1 sets d1 and d2 to be greater than or equal to 0.5 mm, which can ensure that there is a sufficient gap between the impeller 12 and the housing 11 to facilitate the normal rotation of the impeller 12, and avoid friction with the housing 11 when the impeller 12 shakes during rotation; it should be noted that the values ​​of d1 and d2 cannot be too large, otherwise it will lead to increased gas leakage. The appropriate sealing gap can reduce the wear and friction caused by the tightness between the impeller 12 and the housing 11 while ensuring the sealing effect. By accurately controlling the size of d1 and d2, the service life of the sealing component can be extended while ensuring the sealing performance.

[0051] According to one embodiment of the utility model, Figure 4 As shown, the distance between the adjacent first sealing teeth 131 and the second sealing teeth 132 is d3, and d3≥0.25mm is satisfied. The distance between the first sealing teeth 131 and the second sealing teeth 132 described here can be simply understood as the width of the gap between the first sealing teeth 131 and the second sealing teeth 132 in the radial direction. Setting the minimum value of d3 to 0.25mm can ensure that when the impeller 12 rotates, the adjacent first sealing teeth 131 and the second sealing teeth 132 will not interfere with or collide with each other, which helps to reduce the wear and heat generated by the friction between the teeth, thereby extending the service life of the sealing teeth. When d3 is too large, it will lead to an increase in gas leakage. Therefore, the value of d3 should not be too large, and d3 can be preferably 0.25mm. An appropriate d3 value can ensure that the sealing teeth can effectively prevent gas leakage while ensuring that there is enough space between the sealing teeth. This design can improve the sealing effect and enhance the performance of the centrifuge.

[0052] According to an embodiment of the present invention, the first wall 111 is configured as a plurality of walls arranged in parallel with each other and having different diameters, and the third wall 121 is configured as a plurality of walls and each of the third walls 121 is respectively configured to correspond to the first wall 111. Figure 1 and Figure 3 As shown, the first wall 111 can be constructed in multiple configurations, and the diameters of the multiple first walls 111 can be different. It can be understood that in the radial direction, the multiple first walls 111 can be staggered, and two adjacent first walls 111 are connected by a second wall 112, and the third wall 121 and the fourth wall 122 correspond to the first wall 111 and the second wall 112 one by one. The arrangement of the first wall 111 can add multiple turning areas to the path of the gas flowing back from the impeller 12 to the air inlet. The turning areas here are formed by the vertical or inclined relationship between the interconnected first wall 111 and the second wall 112. The multiple turning areas can reduce the flow rate of the gas and produce a certain obstruction to the flow of the gas, thereby reducing the leakage loss of the gas and improving the efficiency of the centrifuge assembly 1.

[0053] According to an embodiment of the utility model, the first sealing component is configured as a plurality of third sealing teeth 141 disposed on at least one of the first wall 111 and the third wall 121 and spaced apart in the axial direction. A first gap 101 is defined between the first wall 111 and the third wall 121, and the first sealing component can be configured as a third sealing tooth 141 disposed on the first wall 111 and protruding toward the third wall 121, and the third sealing teeth 141 are configured as a plurality of third sealing teeth 141 spaced apart from each other in the extension direction of the first wall 111, and the plurality of first sealing teeth 131 can increase the flow path of the gas in the first gap 101 and can increase the resistance to the flow of the gas, and can effectively reduce the leakage loss of the gas. In actual processing, the third sealing teeth 141 can also be disposed on the third wall 121 protruding toward the first wall 111 as required, or the third sealing teeth 141 can be disposed on a plurality of the first wall 111 and the third wall 121, respectively, and the plurality of third sealing teeth 141 on the first wall 111 and the plurality of third sealing teeth 141 on the third wall 121 are staggered in the extension direction of the first gap 101.

[0054] According to an embodiment of the utility model, the third sealing tooth 141 is arranged on the first wall 111 and protrudes toward the third wall 121, and the distance between the end of the third sealing tooth 141 and the third wall 121 is d4, and satisfies: d4 ≥ 0.2 mm. Here, the third wall 121 sealing tooth is only arranged on the first wall 111 as an example. In this case, the third sealing tooth 141 protrudes toward the third wall 121. Therefore, the distance between the end of the third sealing tooth 141 and the third wall 121 will affect the flow of gas and the rotation of the impeller 12. Specifically, as Figure 5 As shown, the distance between the end of the third sealing tooth 141 and the third wall 121 can be represented by d4, and d4≥0.2mm. It can be understood that when d4<0.2mm, the distance between the third sealing tooth 141 and the third wall 121 is too close, which will affect the rotation of the impeller 12. Maintaining a gap of d4≥0.2mm can avoid direct contact between the third sealing tooth 141 and the third wall 121, thereby reducing wear caused by friction, which helps to extend the service life of the sealing component; accordingly, the value of d4 cannot be too large, otherwise it will cause increased gas leakage. Therefore, a suitable d4, such as d4=0.2mm, can ensure the sealing effect of the third sealing tooth 141 while avoiding the rotation of the impeller 12 being affected, thereby improving the efficiency and reliability of the centrifuge assembly 1.

[0055] According to one embodiment of the utility model, the impeller 12 includes a base 123, blades 124 and a connecting ring 125, the blades 124 are constructed in multiples and are arranged on the periphery of the base 123; the connecting ring 125 is arranged on the periphery of the multiple blades 124 and is respectively connected to the multiple blades 124, and the outer surface of the connecting ring 125 is formed with the third wall 121 and the fourth wall 122.

[0056] The impeller 12 is provided with a base 123, which is the supporting structure of the entire impeller 12. A plurality of blades 124 spaced from each other are arranged around at least part of the periphery of the base 123. A connecting ring 125 is connected to the periphery of the blades 124. The design of the connecting ring 125 connects the plurality of blades 124 together to form an integral structure, thereby enhancing the structural stability of the impeller 12, helping to ensure that the impeller 12 can remain stable when rotating at high speeds, and reducing performance degradation caused by vibration or deformation. The outer surface of the connecting ring 125 forms a third wall 121 and a fourth wall 122, which cooperate with the corresponding first sealing component and second sealing component 13 to form an effective sealing structure, which can prevent gas from leaking from the gap between the impeller 12 and the housing 11, thereby improving the efficiency of the centrifuge assembly 1.

[0057] The compressor of the present utility model is briefly described below.

[0058] The compressor according to the utility model includes the centrifuge assembly 1 in the above embodiment. Since the compressor according to the utility model is provided with the centrifuge assembly 1 in the above embodiment, when the centrifuge assembly 1 is assembled, the arrangement of the first sealing component and the second sealing component 13 reduces the gas leakage loss of the centrifuge assembly 1, thereby improving the efficiency of the compressor.

[0059] The air conditioner according to the utility model is briefly described below.

[0060] The air conditioner according to the utility model includes the compressor in the above embodiment. Since the air conditioner according to the utility model is provided with the compressor in the above embodiment, when the compressor is assembled to the air conditioner, the efficiency of the air conditioner in regulating the temperature can be improved.

[0061] In some embodiments, the impeller 12 can be made of high-strength aluminum alloy, which ensures the structural strength of the impeller 12 and improves the service life of the impeller 12; the shell 11 is made of steel. During the operation of the centrifuge assembly 1, the shell 11 is fixed. The shell 11 made of steel has better stability and structural strength, which can improve the service life of the sealing components; the first sealing teeth 131, the second sealing teeth 132 and the third sealing teeth 141 can be made of bus alloy material, which is soft and can be liquefied when subjected to high friction temperature, fully ensuring that the impeller 12 will not be damaged when unexpected friction occurs during the operation of the centrifuge assembly 1, and will not affect the dynamic balance of the rotor.

[0062] In summary, the centrifuge assembly 1 is provided with a pivot hole on the housing 11, and the impeller 12 is rotatably received in the pivot hole, thereby improving the compactness of the structure. The inner wall of the pivot hole is formed with a first wall 111 and a second wall 112 which are perpendicular or inclined to each other, and the impeller 12 is formed with a corresponding third wall 121 and a fourth wall 122, wherein the first wall 111 is parallel to the axis of the pivot hole and defines a first gap 101 with the third wall 121, and the first gap 101 is provided with a third sealing tooth 141 which is provided on the first wall 111 and protrudes toward the third wall 121, and the third sealing tooth 141 extends the flow path of the gas in the third gap and can produce a certain obstruction to the flow of the gas, thereby reducing the leakage loss of the gas through the first gap 101; the second wall 112 and the fourth wall 122 define a second gap 102, and the second gap 101 is provided with a third sealing tooth 141 which is provided on the first wall 111 and protrudes toward the third wall 121. The third sealing tooth 141 extends the flow path of the gas in the third gap and can produce a certain obstruction to the flow of the gas, thereby reducing the leakage loss of the gas through the first gap 101; the second wall 112 and the fourth wall 122 define a second gap 102, and the second gap 101 is provided with a third sealing tooth 141 which protrudes toward the third wall 121. 2 has a first sealing tooth 131 disposed on the second wall 112 and protruding toward the fourth wall 122 and a second sealing tooth 132 disposed on the fourth wall 122 and protruding toward the second wall 112. The second sealing teeth 132 and the first sealing teeth 131 are staggered in the extension direction of the second gap 102. The staggered first sealing teeth 131 and the second sealing teeth 132 can change the flow path of the gas in the second gap 102 and generate resistance to the flow of the gas, with good sealing effect. There is dynamic complementarity between the first sealing teeth 131 and the second sealing teeth 132, which can ensure that the gas passing through the second gap 102 is always reduced when the impeller 12 is offset, further improving the efficiency of the centrifuge. In addition, the impeller 12 is provided with a plurality of blades 124 on at least part of the periphery of the base 123, and the connecting ring 125 is connected to the plurality of blades 124 and is used to define the third wall 121 and the fourth wall 122. The arrangement of the connecting ring 125 can improve the structural strength of the impeller 12, thereby improving the reliability of the centrifuge assembly 1.

[0063] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0064] In the description of the present invention, "first feature" or "second feature" may include one or more of the features.

[0065] In the description of the present invention, "plurality" means two or more.

[0066] In the description of the present invention, a first feature being “above” or “below” a second feature may include that the first and second features are directly in contact with each other, or may include that the first and second features are not in direct contact but are in contact with each other via another feature therebetween.

[0067] In the description of the present invention, a first feature “above”, “over” and “above” a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0068] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0069] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A centrifuge assembly, characterized in that: include: A housing (11), the housing (11) having a pivot hole, the inner wall of the pivot hole being formed with a first wall (111) parallel to the axis of the pivot hole and a second wall (112) inclined or vertically arranged relative to the first wall (111); An impeller (12), the impeller (12) being rotatably disposed on the housing (11) and at least a portion of the impeller (12) being received in the pivot hole, the impeller (12) being formed with a third wall (121) directly opposite to the first wall (111) and a fourth wall (122) directly opposite to the second wall (112); wherein A first sealing component is formed on at least one of the first wall (111) and the third wall (121), and a second sealing component (13) is formed on at least one of the second wall (112) and the fourth wall (122).

2. The centrifuge assembly (1) according to claim 1, characterized in that The second sealing component (13) is constructed of a plurality of first sealing teeth (131) arranged on the second wall (112) and a plurality of second sealing teeth (132) arranged on the fourth wall (122); the plurality of first sealing teeth (131) and the plurality of second sealing teeth (132) are arranged alternately in the extension direction of the second wall (112).

3. The centrifuge assembly (1) according to claim 2, characterized in that The cross-sections of the first sealing tooth (131) and the second sealing tooth (132) in the radial direction of the pivot hole are respectively configured as rectangles.

4. The centrifuge assembly (1) according to claim 3, characterized in that The distance between the tooth top of the first sealing tooth (131) and the fourth wall (122) is d1, and the distance between the tooth top of the second sealing tooth (132) and the second wall (112) is d2, and the following condition is satisfied: d1=d2≥0.5 mm.

5. The centrifuge assembly (1) according to claim 2, characterized in that The distance between adjacent first sealing teeth (131) and second sealing teeth (132) is d3, and d3≥0.25 mm.

6. The centrifuge assembly (1) according to claim 1, characterized in that The first wall (111) is constructed as a plurality of walls which are arranged in parallel with each other and have different diameters, and the third wall (121) is constructed as a plurality of walls, and each of the third walls (121) is arranged corresponding to the first wall (111).

7. The centrifuge assembly (1) according to claim 6, characterized in that The first sealing component is configured as a plurality of third sealing teeth (141) which are arranged on at least one of the first wall (111) and the third wall (121) and are spaced apart in the axial direction.

8. The centrifuge assembly (1) according to claim 7, characterized in that The third sealing tooth (141) is arranged on the first wall (111) and protrudes toward the third wall (121); the distance between the end of the third sealing tooth (141) and the third wall (121) is d4, and satisfies: d4≥0.2 mm.

9. The centrifuge assembly (1) according to claim 1, characterized in that The impeller (12) comprises: Base(123); Blades (124), the blades (124) being constructed in plurality and arranged on the outer periphery of the base (123); A connecting ring (125) is provided on the outer periphery of the plurality of blades (124) and is respectively connected to the plurality of blades (124), and the outer surface of the connecting ring (125) is formed with the third wall (121) and the fourth wall (122).

10. A compressor, characterized in that: A centrifuge assembly (1) comprising any one of claims 1-9.

11. An air conditioner, characterized in that: Comprising the compressor as claimed in claim 10.

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