Crankshaft structure, pump body assembly, compressor and air conditioner

Abstract

The invention discloses a crankshaft structure, a pump body assembly, a compressor and an air conditioner, the crankshaft structure comprises a shaft body and an eccentric part, the eccentric part is arranged on the shaft body, the eccentric part is provided with a thrust part, and the thrust part is provided with a flexible buffer part. In actual application, the flexible buffer component can be used for relieving the possibility that the crankshaft rotor assembly violently impacts the upper flange due to the pressure difference between the upper cavity and the lower cavity of the motor and violently impacts the lower flange during descending, so that the thrust sound is effectively relieved, the overall use noise of the compressor is reduced, and the use experience of a user is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of air-conditioning compressors, and in particular to a crankshaft structure, a pump body assembly, a compressor and an air conditioner. Background Art

[0002] When designing an air-conditioning compressor, both the operational stability and the friction and wear of the compressor must be considered. The unnecessary friction area must be minimized during design. Therefore, a certain distance is set between the upper thrust surface of the eccentric portion of the crankshaft and the upper flange. When the compressor is exhausted, the high-speed airflow violently impacts the lower end of the rotor assembly, causing the crankshaft rotor assembly to move violently upward, thereby hitting the upper flange. After the impact, the crankshaft rotor assembly moves downward due to gravity, causing the lower end face of the eccentric portion of the crankshaft to hit the end face of the lower flange, causing an abnormal noise and thrust noise, which affects the user experience. Summary of the invention

[0003] The purpose of the present invention is to overcome the deficiencies of the prior art and to provide a crankshaft structure, a pump assembly, a compressor and an air conditioner, which are intended to alleviate the thrust noise when the compressor is working and to enhance the user experience.

[0004] To achieve the above object, the present invention adopts the following technical solutions:

[0005] In a first aspect, the present invention provides a crankshaft structure, comprising:

[0006] Axis body;

[0007] An eccentric portion, disposed on the shaft body;

[0008] Wherein, the eccentric portion is provided with a thrust portion, and the thrust portion is provided with a flexible buffer component.

[0009] Furthermore, the flexible buffer component is radially extended along the axis of the shaft body, and a buffer gap is provided between the flexible buffer component and the thrust surface of the thrust portion.

[0010] Furthermore, the flexible buffer component and the thrust portion are an integrated structure or a split structure.

[0011] Furthermore, when the flexible buffer component and the thrust portion are an integrated structure, a hollow groove cavity is provided between the flexible buffer component and the thrust portion.

[0012] Furthermore, when the flexible buffer component and the thrust portion are of a split structure, the flexible buffer component and the thrust portion are fixedly connected.

[0013] Further, the eccentric portion is arranged between the two ends of the shaft body, and the eccentric portion divides the shaft body into a long axis and a short axis. The thrust portion on the eccentric portion is an upper thrust portion and a lower thrust portion. The upper thrust portion is arranged close to the long axis, and the lower thrust portion is arranged close to the short axis. At least one of the upper thrust portion and the lower thrust portion is provided with the flexible buffer component.

[0014] In a second aspect, the present invention further provides a pump body assembly, comprising an upper flange, a lower flange, a cylinder and the above-mentioned crankshaft structure, wherein the upper flange is sleeved on the major shaft, the lower flange is sleeved on the minor shaft, the cylinder is sleeved on the eccentric portion, and the cylinder is located between the upper flange and the lower flange.

[0015] Furthermore, the upper thrust portion is provided with the flexible buffer component, and one side of the flexible buffer component is in close contact with the upper flange.

[0016] In a third aspect, the present invention further provides a compressor, comprising the above-mentioned pump body assembly.

[0017] In a fourth aspect, the present invention further provides an air conditioner, comprising the above-mentioned compressor.

[0018] Compared with the prior art, the present invention has the following beneficial effects: a crankshaft structure, comprising a shaft body and an eccentric part, the eccentric part being arranged on the shaft body, the eccentric part being provided with a thrust part, and the thrust part being provided with a flexible buffer component. In practical application, the flexible buffer component can be used to alleviate the possibility of the crankshaft rotor assembly violently hitting the upper flange due to the pressure difference between the upper and lower chambers of the motor, and violently hitting the lower flange when descending, thereby effectively alleviating the thrust noise, reducing the overall use noise of the compressor, and thus improving the user experience.

[0019] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the following preferred embodiments are specifically cited and described in detail as follows. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying any creative work.

[0021] Figure 1 A schematic structural diagram of a crankshaft structure provided in Embodiment 1 of the present invention;

[0022] Figure 2A schematic structural diagram of a pump assembly provided in Embodiment 1 of the present invention;

[0023] Figure 3 for Figure 2 A partial enlarged view of point I in the middle;

[0024] Figure 4 A schematic structural diagram of a crankshaft structure provided in Embodiment 2 of the present invention;

[0025] Figure 5 A schematic structural diagram of a pump assembly provided in Embodiment 2 of the present invention;

[0026] Figure 6 for Figure 5 A partial enlarged view of point I in the middle;

[0027] Figure 7 A schematic structural diagram of a crankshaft structure provided in Embodiment 3 of the present invention;

[0028] Figure 8 A schematic structural diagram of a pump assembly provided in Embodiment 3 of the present invention;

[0029] Fig. 9 for Figure 8 A partial enlarged view of point I in the middle;

[0030] Fig.10 A schematic structural diagram of a crankshaft structure provided in Embodiment 4 of the present invention;

[0031] Fig.11 A schematic structural diagram of a pump assembly provided in Embodiment 4 of the present invention;

[0032] Fig.12 for Fig.11 A partial enlarged view of point I in the middle;

[0033] Fig.13 A schematic diagram of the structure of a compressor provided in a specific embodiment of the present invention.

[0034] Reference numerals

[0035] 1. Crankshaft structure; 11. Shaft body; 111. Long shaft; 112. Short shaft; 12. Eccentric portion; 121. Upper thrust portion; 1211. Upper thrust surface; 122. Lower thrust portion; 1221. Lower thrust surface; 123. Hollow groove; 13A. Flexible buffer component; 2. Pump body assembly; 21. Upper flange; 22. Lower flange; 23. Cylinder; 13B. Flexible buffer component; 13C. Flexible buffer component; 13D. Flexible buffer component. DETAILED DESCRIPTION

[0036] The technical solution of the present invention will be clearly and completely described below in conjunction with the specific embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] 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 limiting the present invention.

[0038] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0039] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0041] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0042] Embodiment 1

[0043] like Figures 1 to 3 As shown, an embodiment of the present invention provides a crankshaft structure 1 and a pump body assembly 2, wherein the crankshaft structure 1 includes a shaft body 11 and an eccentric portion 12, the eccentric portion 12 is arranged on the shaft body 11, the eccentric portion 12 is provided with a thrust portion, the thrust portion is provided with a flexible buffer component 13A, the eccentric portion 12 is arranged between the two ends of the shaft body 11, the eccentric portion 12 divides the shaft body 11 into a long axis 111 and a short axis 112, the thrust portion on the eccentric portion 12 is an upper thrust portion 121 and a lower thrust portion 122, the upper thrust portion 121 is arranged close to the long axis 111, the lower thrust portion 122 is arranged close to the short axis 112, and at least one of the upper thrust portion 121 and the lower thrust portion 122 is provided with a flexible buffer component 13A. The pump body assembly 2 includes an upper flange 21, a lower flange 22, a cylinder 23 and the above-mentioned crankshaft structure 1. The upper flange 21 is sleeved on the long shaft 111, the lower flange 22 is sleeved on the short shaft 112, the cylinder 23 is sleeved on the eccentric part 12, and the cylinder 23 is located between the upper flange 21 and the lower flange 22.

[0044] When the above structure is actually applied in a compressor, the flexible buffer component 13A can be used to alleviate the possibility of the crankshaft rotor assembly violently hitting the upper flange 21 due to the pressure difference between the upper and lower chambers of the motor, and violently hitting the lower flange 22 when descending, thereby effectively alleviating the thrust noise, reducing the overall operating noise of the compressor, and thus improving the user experience.

[0045] The flexible buffer component 13A is designed as an annular structure, and the flexible buffer component 13A is radially extended along the axis of the shaft body 11. A buffer gap is provided between the flexible buffer component 13A and the thrust surface of the thrust portion, and the buffer gap is a certain space reserved between the flexible buffer component 13A and the thrust surface. The buffer gap provides additional buffer space, thereby making the flexible buffer component 13A have a better buffer effect.

[0046] The flexible buffer component 13A and the thrust portion are of an integrated structure or a split structure. The integrated structure provides better structural strength and integrity, effectively increasing the buffering and shock absorption effects; while the split structure provides flexibility in use and can be adjusted according to actual needs.

[0047] In one embodiment, when the flexible buffer component 13A and the thrust portion are an integrated structure, a hollow groove cavity 123 is provided between the flexible buffer component 13A and the thrust portion. Since the eccentric portion 12 of a general crankshaft is made of a rigid material, in order to make the rigid material have a flexible effect, the hollow groove cavity 123 provided above is used to achieve this. When the flexible buffer component 13A is subjected to an axial impact force, the hollow groove cavity 123 can effectively absorb and disperse the stress, providing a better buffering effect.

[0048] Specifically, the hollow groove 123 can be designed as an annular groove, and its width and depth can be optimized according to actual needs. Under the impact force, the existence of the hollow groove 123 enables the buffer component to deform, thereby absorbing and dispersing the external force, playing a buffering role, and alleviating the thrust sound.

[0049] In order to ensure that the eccentric portion 12 still has a certain structural strength while being designed with the hollow groove cavity 123 , an elastic material, such as polyurethane foam or silicone, may be filled in the hollow groove cavity 123 .

[0050] In one embodiment, when the flexible buffer component 13A and the thrust portion are of a separate structure, the flexible buffer component 13A is fixedly connected to the thrust portion. The fixed connection may be achieved by mechanical fasteners, such as bolts, screws, or snaps. For example, the flexible buffer component 13A may be provided with a plurality of through holes on its inner side, and the end surface of the thrust portion is provided with corresponding screw holes, which are fastened by bolts.

[0051] The flexible buffer component 13A can be made of high temperature resistant silicone material or highly wear-resistant polyurethane material.

[0052] The flexible buffer component 13A can be designed as a multi-layer structure to provide a better buffering effect. Each layer of buffer material can be selected from different materials and thicknesses. Through the synergistic effect of the multi-layer buffer structure, the axial impact force can be effectively absorbed and dispersed. For example, a high-elastic rubber material can be used in the inner layer of the flexible buffer component 13A, and a wear-resistant silicone material can be used in the outer layer. Through this multi-layer structure design, it can provide a good buffering effect and improve the wear resistance and service life of the buffer component.

[0053] like Figures 1 to 3As shown, in this embodiment, the upper thrust portion 121 is provided with a flexible buffer component 13A, and one side of the flexible buffer component 13A is in close contact with the upper flange 21. When the motor rotor moves upward due to the pressure difference between the upper and lower chambers of the motor, the flexible buffer component plays a good buffering role, thereby preventing the upper thrust surface 1211 of the upper thrust portion 121 of the crankshaft from violently hitting the upper flange 21 and making abnormal noise, and also avoiding the abnormal noise caused by the lower thrust surface 1221 of the lower thrust portion 122 detaching from the lower flange 22 and hitting the lower flange 22. The two sides of the flexible buffer component 13A close to and away from the upper thrust surface 1211 of the upper thrust portion 121 are vertical surfaces, the thickness of the flexible buffer component 13A is H1, and the flexible buffer component 13A is coaxially arranged with the shaft body 11, and the radius of the flexible buffer component 13A is RB1, 1.5mm≤H1≤2.5mm. The hollow groove 123 is an annular groove, and is disposed between the flexible buffer component 13A and the upper thrust portion 121 . The hollow groove 123 is coaxially disposed with the shaft body 11 , and a radius of the hollow groove 123 is RA1 , wherein 0.6≤RA1 / RB1≤0.7.

[0054] Embodiment 2

[0055] like Figures 4 to 6 As shown, the difference between this embodiment and the first embodiment is that the shape design of the flexible buffer component 13B is different. Specifically, in this embodiment, the flexible buffer component 13B is designed to be stepped, with two steps, the step away from the upper thrust surface 1211 of the upper thrust portion 121 is the first step, and the step close to the upper thrust surface 1211 of the upper thrust portion 121 is the second step. The height of the first step is H2, the radius of the first step is RB2, the second step is H3, the radius of the first step is RB3, wherein 0.2≤H2 / H3≤0.5, 0.8≤RB3 / RB2≤0.9. The hollow groove 123 is an annular groove, the hollow groove 123 is arranged between the flexible buffer component 13B and the upper thrust portion 121, and the hollow groove 123 is coaxially arranged with the shaft body 11, and the radius of the hollow groove 123 is RA2, wherein 0.6≤RA2 / RB2≤0.7.

[0056] Embodiment 3

[0057] like Figures 7 to 9 As shown, the difference between this embodiment and the first embodiment is that the shape design of the flexible buffer component 13C is different. Specifically, the flexible buffer component 13C is in a crescent shape, and the convex part of the flexible buffer component 13C is far away from the upper thrust surface 1211 of the upper thrust portion 121. The thinnest thickness of the flexible structure is H4, 1.5mm≤H4≤2.5mm. The hollow groove 123 is an annular groove, and the hollow groove 123 is arranged between the flexible buffer component 13C and the upper thrust portion 121, and the hollow groove 123 is coaxially arranged with the shaft body 11, and the radius of the hollow groove 123 is RA3.

[0058] Embodiment 4

[0059] like Figures 10 to 12 As shown, the difference between this embodiment and the first embodiment is that the shape design of the flexible buffer component 13D is different. Specifically, the side of the flexible buffer component 13D close to the upper thrust surface 1211 of the upper thrust portion 121 is an inclined surface, and the inclination angle of the inclined surface is E degrees. The side of the flexible buffer component 13D away from the upper thrust surface 1211 of the upper thrust portion 121 is a vertical surface, and the thinnest part of the flexible buffer component 13D is H6, 0.5mm≤H6≤1mm, 5°≤E°≤10°.

[0060] like Fig.13 As shown, the embodiment of the present invention further provides a compressor, including the above-mentioned pump body assembly 2. Except for the above-mentioned pump body assembly 2, the remaining structures of the compressor can be the same as those in the prior art, and the remaining structures are not described in detail here.

[0061] The embodiment of the present invention further provides an air conditioner, comprising the above compressor. Except for the above compressor, the rest of the structure of the air conditioner can be the same as that in the prior art, and the rest of the structure will not be described in detail here.

[0062] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the present invention, and these modifications or replacements should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. A crankshaft structure, characterized in that: include: Axis body; An eccentric portion, disposed on the shaft body; Wherein, the eccentric portion is provided with a thrust portion, and the thrust portion is provided with a flexible buffer component.

2. A crankshaft structure according to claim 1, characterized in that: The flexible buffer component is radially extended along the axis of the shaft body, and a buffer gap is provided between the flexible buffer component and the thrust surface of the thrust portion.

3. A crankshaft structure according to claim 1, characterized in that: The flexible buffer component and the thrust portion are an integrated structure or a split structure.

4. A crankshaft structure according to claim 3, characterized in that: When the flexible buffer component and the thrust portion are an integrated structure, a hollow groove cavity is provided between the flexible buffer component and the thrust portion.

5. A crankshaft structure according to claim 3, characterized in that: When the flexible buffer component and the thrust portion are of a separate structure, the flexible buffer component is fixedly connected to the thrust portion.

6. A crankshaft structure according to any one of claims 1 to 5, characterized in that: The eccentric portion is arranged between the two ends of the shaft body, and the eccentric portion divides the shaft body into a long axis and a short axis. The thrust portion on the eccentric portion is an upper thrust portion and a lower thrust portion. The upper thrust portion is arranged close to the long axis, and the lower thrust portion is arranged close to the short axis. At least one of the upper thrust portion and the lower thrust portion is provided with the flexible buffer component.

7. A pump assembly, characterized in that: It includes an upper flange, a lower flange, a cylinder and the crankshaft structure according to claim 6, wherein the upper flange is sleeved on the long shaft, the lower flange is sleeved on the short shaft, the cylinder is sleeved on the eccentric part, and the cylinder is located between the upper flange and the lower flange.

8. A pump assembly according to claim 7, characterized in that: The upper thrust portion is provided with the flexible buffer component, and one side of the flexible buffer component is in close contact with the upper flange.

9. A compressor, characterized in that: A pump body assembly comprising any one of claims 7-8.

10. An air conditioner, characterized in that: Comprising the compressor as claimed in claim 9.

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