Compressor cylinder, pump body assembly, compressor and air conditioning equipment

Abstract

The utility model provides a compressor cylinder, a pump body assembly, a compressor and air conditioning equipment, the compressor cylinder comprises a cylinder wall and a central hole, and the cylinder wall is arranged around the central hole; the air cylinder wall is provided with an open hole, the open hole is formed between the inner wall face and the outer wall face of the air cylinder wall, at least part of the hole section of the open hole is inclined to the preset direction, and the preset direction is the direction where the central axis of the center hole is located. The embodiment of the compressor cylinder solves the technical problem that the service life of the compressor cylinder in the prior art is short.

Description

Technical Field

[0001] The utility model relates to the field of compressors, and in particular to a compressor cylinder, a pump body component, a compressor and air-conditioning equipment. Background Art

[0002] The compressor cylinder is a critical component of the compressor. Its inner wall cooperates with the moving piston to compress the refrigerant. During use, conventional compressor cylinders can experience increased friction between the cylinder and the piston, which in turn increases wear and reduces the cylinder's service life. This can also lead to reduced compressor efficiency and increased noise.

[0003] It can be seen that the relevant technology has a technical problem of short compressor cylinder life, and no effective solution has been proposed to this technical problem. Utility Model Content

[0004] The main purpose of the utility model is to provide a compressor pump body, a compressor and an air-conditioning device, so as to solve the technical problem of short life of the compressor cylinder in the related art.

[0005] In order to achieve the above-mentioned purpose, according to one aspect of the present invention, a compressor cylinder is provided, which includes a cylinder wall and a center hole, and the cylinder wall is arranged around the center hole; wherein, an opening is provided on the cylinder wall, and the opening is arranged between the inner wall surface and the outer wall surface of the cylinder wall, and at least part of the hole section of the opening is inclined to a preset direction, and the preset direction is the direction of the central axis of the center hole.

[0006] Furthermore, along the circumference of the cylinder wall, two ends of at least part of the hole section of the opening are staggered.

[0007] Furthermore, at least one end of the opening extends to the end surface of the cylinder wall, wherein the end surface is the surface of the cylinder wall along a preset direction; or, the opening is arranged inside the cylinder wall.

[0008] Furthermore, at least one end of the opening extends to the end face of the cylinder wall, wherein the end face is the surface of the cylinder wall along a preset direction; a sealing member installation groove is provided at a position on the end face corresponding to the end of the opening.

[0009] Furthermore, along the circumference of the cylinder wall, the opening is located between the two threaded holes, and there is no other hole structure between the two threaded holes except the opening, and the threaded holes extend along the preset direction to set an angle; wherein, around the central axis of the center hole, the distribution angle θ1 of the two threaded holes is ≥30°.

[0010] Furthermore, the opening passes through the two end faces of the cylinder wall, wherein the end face is the surface of the cylinder wall along a preset direction; wherein, on any end face, around the central axis of the center hole, the distribution angle between the opening of the opening and the opening of the threaded hole closest to it is 13.5°≤θ2≤15°.

[0011] Furthermore, the average wall thickness of the cylinder wall is D, and the range of the aperture Φ of the opening is 0.4D≤Φ≤0.45D.

[0012] According to another aspect of the present invention, a pump body assembly is provided, including: a cylinder structure, which is the above-mentioned compressor cylinder; a first bearing and a second bearing, wherein the cylinder structure is arranged between the first bearing and the second bearing; and a crankshaft structure, which is rotatably inserted into the center hole of the cylinder structure and cooperates with the first bearing and the second bearing.

[0013] According to another aspect of the present invention, a compressor is provided, which includes the above-mentioned pump body assembly.

[0014] According to another aspect of the present invention, an air-conditioning device is provided, comprising the above-mentioned compressor.

[0015] The compressor cylinder of the embodiment of the present invention includes a cylinder wall and a center hole, wherein the cylinder wall is arranged around the center hole; wherein an opening is provided on the cylinder wall, and the opening is arranged between the inner wall surface and the outer wall surface of the cylinder wall, and at least a portion of the hole section of the opening is inclined in a preset direction, which is the direction of the central axis of the center hole. The compressor cylinder adopting this structural design, by designing the opening on the cylinder wall and controlling the extension direction of the opening so that at least a portion of the hole section is inclined in a preset direction, wherein the preset direction is the direction of the central axis of the center hole of the compressor cylinder, can effectively increase the length of the opening. In this way, when external heat is conducted from the outer wall surface of the cylinder wall to the inner wall surface, more heat will be blocked by the opening, thereby reducing the heat transfer from the outside of the compressor cylinder to the inside, which is beneficial to reducing the thermal deformation of the inner wall surface of the cylinder, and further reducing the friction between the inner wall surface of the cylinder and the piston, which is beneficial to solving the technical problem of short life of the compressor cylinder in the related art. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings constituting part of this application are provided to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are provided to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0017] Figure 1 This is a schematic structural diagram of an embodiment of a compressor cylinder of the present utility model from a first viewing angle;

[0018] Figure 2This is a schematic structural diagram of an embodiment of a compressor cylinder of the present utility model at a second viewing angle;

[0019] Figure 3 This is a schematic cross-sectional view of a portion of the pump assembly according to an embodiment of the present invention;

[0020] Figure 4 This is a schematic structural diagram of a compressor according to an embodiment of the present utility model.

[0021] The above drawings include the following reference numerals:

[0022] 1. Cylinder wall; 11. Inner wall; 12. Outer wall; 2. Center hole; 3. Opening; 4. Seal mounting groove; 5. Threaded hole; 10. Cylinder structure; 20. First bearing; 30. Second bearing; 40. Crankshaft structure; 41. Crankshaft; 42. Piston; 43. Eccentric part; 50. Motor; 51. Stator; 52. Rotor. DETAILED DESCRIPTION

[0023] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0024] Please refer to Figures 1 to 4 In order to achieve the above-mentioned purpose, an embodiment of the present invention provides a compressor cylinder, which includes a cylinder wall 1 and a center hole 2, and the cylinder wall 1 is arranged around the center hole 2; wherein, an opening 3 is provided on the cylinder wall 1, and the opening 3 is arranged between the inner wall surface 11 and the outer wall surface 12 of the cylinder wall 1, and at least a portion of the hole section of the opening 3 is arranged to be inclined in a preset direction, and the preset direction is the direction of the central axis of the center hole 2.

[0025] The compressor cylinder adopts this structural design, by designing an opening 3 on the cylinder wall 1 and controlling the extension direction of the opening 3, so that at least part of the hole section is inclined in a preset direction, wherein the preset direction is the direction of the central axis of the center hole 2 of the compressor cylinder. The length of the opening 3 can be effectively increased. In this way, when external heat is conducted from the outer wall surface 12 of the cylinder wall 1 to the inner wall surface 11, more heat will be blocked by the opening 3, thereby reducing the heat transfer from the outside of the compressor cylinder to the inside, which is beneficial to reducing the thermal deformation of the inner wall surface of the cylinder, and further reducing the friction between the inner wall surface of the cylinder and the piston, which is beneficial to improving the life of the compressor cylinder and solving the technical problem of short life of the compressor cylinder in related technologies.

[0026] Furthermore, the design of opening 3 can also reduce the weight of the compressor cylinder. Furthermore, it should be noted that the compressor cylinder of the embodiment of the present application, by designing the thermal resistance avoidance hole inclined in a preset direction, can achieve a better transition of the compressor cylinder structure along the circumferential direction, compared to a solution in which the thermal resistance avoidance hole is designed parallel to the preset direction. This helps to reduce stress concentration at opening 3, thereby reducing fatigue damage to the cylinder under cyclic pressure and extending the life of the compressor cylinder.

[0027] Specifically, along the circumference of the cylinder wall 1 , two ends of at least a portion of the hole section of the opening 3 are staggered.

[0028] That is to say, at least part of the hole section of the opening 3 is inclined along the circumference of the cylinder wall 1. Therefore, along the circumference of the cylinder wall 1, the two ends of this part of the hole section of the opening 3 are staggered. By adopting this setting method, the area occupied by the opening 3 along the radial direction of the compressor cylinder can be better increased, thereby improving the heat blocking effect and reducing the transfer of external heat to the inside of the compressor cylinder.

[0029] Optionally, at least one end of the opening 3 extends to the end surface of the cylinder wall 1 , wherein the end surface is the surface of the cylinder wall 1 along a preset direction; or, the opening 3 is arranged inside the cylinder wall 1 .

[0030] That is to say, in actual implementation, the specific structural form of the opening 3 can be selected in different ways:

[0031] For example, in an optional structural form, one end of the opening 3 is open and the other end is closed, that is, one end of the opening 3 extends to an end face of the cylinder wall 1, and the other end of the opening 3 is located inside the cylinder wall 1 and does not extend to the surface of the cylinder wall 1. At this time, the opening 3 is in the form of a blind hole.

[0032] For another example, in another optional structural form, both ends of the opening 3 are open, that is, one end of the opening 3 extends to one end surface of the cylinder wall 1, and the other end of the opening 3 extends to the other end surface of the cylinder wall 1. At this time, the opening 3 is in the form of a through hole.

[0033] For another example, in another optional structural form, both ends of the opening 3 are closed. In this case, the opening 3 is a structure arranged inside the cylinder wall 1, and its ends do not extend to the surface of the cylinder wall 1. During actual processing, the opening 3 can be first processed into a through hole or a blind hole, and then its ends are blocked. Due to the lack of effective sealing between the cylinder end face and the adjacent bearing end face, the use of this structural design of the opening 3 with closed ends facilitates the entry of hot air from the wall of the cylinder into the opening 3, thereby affecting its heat blocking effect, improving the reliability of the heat blocking of the opening 3, and reducing the transfer of external heat to the interior of the compressor cylinder.

[0034] In a preferred embodiment, at least one end of the opening 3 extends to the end face of the cylinder wall 1, wherein the end face is the surface of the cylinder wall 1 along a preset direction; a sealing mounting groove 4 is provided on the end face at a position corresponding to the end of the opening 3.

[0035] By providing a seal mounting groove 4 at a position on the end surface of the cylinder wall 1 corresponding to the opening 3, during assembly, the seal within the seal mounting groove 4 can seal the compressor cylinder and the bearing end surface, thereby preventing hot air from outside the wall from entering the opening 3 and affecting the heat-blocking effect of the opening 3. Specifically, the seal can be any component capable of performing a sealing function, such as a sealing ring or a sealing gasket.

[0036] In a specific implementation, along the circumference of the cylinder wall 1, the opening 3 is located between the two threaded holes 5, and there is no other hole structure between the two threaded holes 5 except the opening 3, and the threaded holes 5 are extended along a preset direction to set an angle; wherein, around the central axis of the center hole 2, the distribution angle θ1 of the two threaded holes 5 is ≥30°.

[0037] In actual implementation, the compressor cylinder and the bearing can be connected by a bolt passing through the threaded hole 5. In this embodiment, the setting position of the opening 3 is further designed. Only when the distribution angle θ1 of the two adjacent threaded holes 5 around the central axis of the center hole 2 is ≥30°, and there is no other hole structure between the two threaded holes 5, can the opening 3 be designed between the two threaded holes 5, thereby avoiding the hole structure on the compressor cylinder being too dense and affecting its structural strength, and ensuring the reliability of the compressor cylinder structure. Specifically, the distribution angle θ1 of the two adjacent threaded holes around the central axis of the center hole 2 is ≥30°, that is, the angle between the projection of the central axis of the two threaded holes 5 in the preset plane and the line connecting the projection of the central axis of the center hole 2 in the preset plane is greater than or equal to 30°, wherein the preset plane is a plane perpendicular to the central axis of the center hole 2. The central axes of the two threaded holes 5 are both set along the preset direction.

[0038] Preferably, the opening 3 passes through the two end faces of the cylinder wall 1, wherein the end face is the surface of the cylinder wall 1 along a preset direction; wherein, on any end face, around the central axis of the center hole 2, the distribution angle between the opening of the opening 3 and the opening of the threaded hole 5 closest thereto is 13.5°≤θ2≤15°.

[0039] By adopting this arrangement, the distribution angle range between the opening of the opening 3 and the opening of the nearest threaded hole 5 is defined, so that the opening 3 can be limited to a suitable inclination angle, thereby taking into account the stiffness of the compressor cylinder and the heat resistance effect of the opening 3.

[0040] Specifically, the average wall thickness of the cylinder wall 1 is D, and the range of the aperture Φ of the opening 3 is 0.4D≤Φ≤0.45D.

[0041] By designing the aperture range of opening 3 to be between 0.4D and 0.45D, it is possible to avoid the aperture of opening 3 being too large and affecting the stiffness of the compressor cylinder, and it is also possible to avoid the aperture of opening 3 being too small and affecting the heat insulation effect, thereby ensuring that the compressor cylinder has good stiffness and heat insulation effect.

[0042] In an optional embodiment, the opening 3 is filled with a heat insulating material or is vacuumed, thereby increasing the heat-blocking effect of the opening 3 .

[0043] Secondly, an embodiment of the present invention also provides a pump body assembly, which includes: a cylinder structure 10, the cylinder structure 10 is the above-mentioned compressor cylinder; a first bearing 20 and a second bearing 30, the cylinder structure 10 is arranged between the first bearing 20 and the second bearing 30; a crankshaft structure 40, the crankshaft structure 40 can be rotatably passed through the center hole 2 of the cylinder structure 10, and cooperates with the first bearing 20 and the second bearing 30.

[0044] like Figure 4 As shown, by adopting the above-mentioned compressor cylinder as the cylinder structure 10 of the pump body assembly, the heat resistance of the cylinder can be improved on the basis of having little impact on the cylinder stiffness, and the transfer of heat from the outside of the cylinder to the inside of the cylinder can be reduced, thereby reducing the thermal deformation of the inner wall of the cylinder, reducing the friction between the inner wall of the cylinder and the piston, and improving the service life of the compressor cylinder.

[0045] In addition, an embodiment of the present invention further provides a compressor, which includes the above-mentioned pump body assembly.

[0046] Again, an embodiment of the present invention further provides an air-conditioning device, which includes the above-mentioned compressor.

[0047] In actual implementation, the cylinder structure 10 of the pump assembly can be one or more, for example Figure 4 As shown, in this embodiment, the pump body assembly is a single-cylinder pump body, with one cylinder structure 10, whose two end surfaces respectively cooperate with the first bearing 20 and the second bearing 30. For another example, in another optional embodiment, the pump body assembly is a double-cylinder pump body, which includes two cylinder structures 10, which are separated by a partition and are sandwiched and installed between the first bearing 20 and the second bearing 30.

[0048] The crankshaft structure 40 includes a crankshaft 41 and a piston 42. The crankshaft 41 is provided with an eccentric portion 43, and the piston 42 is mounted on the eccentric portion 43. During use, the crankshaft structure 40 of the pump assembly is connected to a motor 50, thereby driving the motor 50 to rotate. The motor 50 includes a stator 51 and a rotor 52. The stator 51 is fixed, and the rotor 52 is connected to the crankshaft structure 40.

[0049] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:

[0050] A compressor cylinder according to an embodiment of the present invention includes a cylinder wall 1 and a center hole 2, wherein the cylinder wall 1 is arranged around the center hole 2; wherein the cylinder wall 1 is provided with an opening 3, which is arranged between the inner wall surface 11 and the outer wall surface 12 of the cylinder wall 1, and at least a portion of the opening 3 is arranged to be inclined in a predetermined direction, which is the direction of the central axis of the center hole 2. A compressor cylinder adopting this structural design effectively increases the length of the opening 3 by designing the opening 3 in the cylinder wall 1 and controlling the extension direction of the opening 3 so that at least a portion of the opening 3 is inclined in a predetermined direction, wherein the predetermined direction is the direction of the central axis of the center hole 2 of the compressor cylinder. Thus, when external heat is conducted from the outer wall surface 12 of the cylinder wall 1 to the inner wall surface 11, more heat is blocked by the opening 3, thereby reducing the heat transfer from the outside of the compressor cylinder to the inside, which is beneficial to reducing thermal deformation of the cylinder inner wall surface, and further reducing friction between the cylinder inner wall surface and the piston, thereby solving the technical problem of short compressor cylinder life in the related art.

[0051] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0052] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0053] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can, for example, be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0054] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A compressor cylinder, characterized in that: The compressor cylinder comprises a cylinder wall (1) and a central hole (2), wherein the cylinder wall (1) is arranged around the central hole (2); The cylinder wall (1) is provided with an opening (3), the opening (3) being arranged between the inner wall surface (11) and the outer wall surface (12) of the cylinder wall (1), and at least a portion of the hole section of the opening (3) being arranged to be inclined in a preset direction, the preset direction being the direction of the central axis of the central hole (2).

2. The compressor cylinder according to claim 1, characterized in that Along the circumference of the cylinder wall (1), two ends of the at least part of the hole section of the opening (3) are staggered.

3. The compressor cylinder according to claim 1, characterized in that At least one end of the opening (3) extends to the end surface of the cylinder wall (1), wherein the end surface is the surface of the cylinder wall (1) along the preset direction; Alternatively, the opening (3) is arranged inside the cylinder wall (1).

4. The compressor cylinder according to claim 1, characterized in that At least one end of the opening (3) extends to the end surface of the cylinder wall (1), wherein the end surface is the surface of the cylinder wall (1) along the preset direction; A sealing member installation groove (4) is provided on the end surface at a position corresponding to the end of the opening (3).

5. The compressor cylinder according to claim 1, characterized in that Along the circumference of the cylinder wall (1), the opening (3) is located between two threaded holes (5), and there is no other hole structure between the two threaded holes (5) except the opening (3), and the threaded holes (5) are extended along the preset direction to set an angle; wherein, around the central axis of the central hole (2), the distribution angle θ1 of the two threaded holes (5) is ≥30°.

6. The compressor cylinder according to claim 5, characterized in that The opening (3) passes through the two end faces of the cylinder wall (1), wherein the end faces are surfaces of the cylinder wall (1) along the preset direction; wherein, on any one of the end faces, around the central axis of the center hole (2), the distribution angle between the opening of the opening (3) and the opening of the threaded hole (5) closest thereto is 13.5°≤θ2≤15°.

7. The compressor cylinder according to any one of claims 1 to 6, characterized in that The average wall thickness of the cylinder wall (1) is D, and the range of the aperture Φ of the opening (3) is 0.4D≤Φ≤0.45D.

8. A pump assembly, characterized in that: include: A cylinder structure (10), wherein the cylinder structure (10) is a compressor cylinder according to any one of claims 1 to 7; a first bearing (20) and a second bearing (30), wherein the cylinder structure (10) is disposed between the first bearing (20) and the second bearing (30); A crankshaft structure (40) is rotatably disposed in the center hole (2) of the cylinder structure (10) and is engaged with the first bearing (20) and the second bearing (30).

9. A compressor, characterized in that: The compressor includes the pump body assembly according to claim 8.

10. An air conditioning device, characterized in that: The air conditioning device includes the compressor according to claim 9.

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