CN214660709U - Compressor crankshaft, compressor and air conditioner - Google Patents
Compressor crankshaft, compressor and air conditioner Download PDFInfo
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- CN214660709U CN214660709U CN202120614119.3U CN202120614119U CN214660709U CN 214660709 U CN214660709 U CN 214660709U CN 202120614119 U CN202120614119 U CN 202120614119U CN 214660709 U CN214660709 U CN 214660709U
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Abstract
The utility model provides a compressor crankshaft, compressor and air conditioner; the compressor crankshaft comprises a long shaft, an eccentric shaft and a short shaft which are connected in sequence; the thrust surface is a matching surface of the eccentric shaft and the cylinder cover, namely the cross section of the short shaft of the eccentric shaft, and plays a role in reducing friction power consumption between the crankshaft of the compressor and the cylinder cover during rotation. When the ratio of the outer diameter of the thrust surface to the outer diameter of the short shaft is greater than or equal to 1.129:1 and less than or equal to 2.146:1, the reliability of the compressor can be ensured, and the low abrasion and the high performance of the compressor can be considered.
Description
Technical Field
The utility model relates to a compressor field, very much relate to a compressor crankshaft.
Background
The compressor is a driven fluid machine for lifting low-pressure gas into high-pressure gas, is a heart of a refrigeration system, sucks low-temperature and low-pressure refrigerant gas from an air suction pipe, drives a piston to compress the refrigerant gas through the operation of a motor, and discharges the high-temperature and high-pressure refrigerant gas to an exhaust pipe to provide power for a refrigeration cycle. The compressor of the air conditioner is mostly a rotor compressor, and a crankshaft is installed in the rotor compressor.
The crankshaft is the core component of the compressor, and the motor of the compressor drives the crankshaft to drive the piston to do eccentric rotation movement in the cylinder, so that the operation of the compressor is realized. The crankshaft typically includes a major axis, a minor axis, an eccentric shaft; the eccentric shaft is connected with the cross section of the short shaft and is also a contact surface of the eccentric shaft and the cylinder cover, namely a thrust surface. Crankshaft thrust face friction losses are greater relative to other locations of the crankshaft. In the design of the crankshaft, when the area of the thrust surface is too large, the friction loss is increased, the oil lubrication effect is poor, and the running efficiency of the compressor is reduced; when the area of the thrust surface is too small, stress concentration of the crankshaft is easily caused, the stress of the crankshaft is severe, and the running reliability of the compressor is influenced. Due to the fact that the crankshaft is light in weight, the outer diameters of the long shaft and the short shaft of the crankshaft are reduced, and the area of the thrust surface is enlarged, the abrasion of the thrust surface is worse, and the abrasion of the thrust surface can affect the refrigerating capacity of the compressor, namely the energy efficiency ratio (COP).
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a compressor crankshaft, compressor and air conditioner, the ratio of the external diameter of the thrust surface through restriction compressor crankshaft and the external diameter of minor axis can guarantee the reliability of compressor and can compromise the low wearing and tearing and the high performance of compressor again.
In order to achieve the above object, the present invention provides a compressor crankshaft, comprising a long shaft, an eccentric shaft and a short shaft which are connected in sequence, wherein the long shaft is coaxial with the short shaft, the eccentric shaft is not coaxial with the long shaft and the short shaft, and the eccentric shaft is connected with the cross section of the short shaft to form a thrust surface; the ratio of the outer diameter of the thrust surface to the outer diameter of the short shaft is greater than or equal to 1.129:1 and less than or equal to 2.146: 1.
Preferably, the ratio of the outer diameter of the thrust surface to the outer diameter of the short shaft is greater than or equal to 1.265:1 and less than or equal to 1.922: 1.
Preferably, the ratio of the outer diameter of the thrust surface to the outer diameter of the stub shaft is equal to 1.741: 1.
Preferably, the eccentric shaft is provided with a groove extending in the axial direction on the outer peripheral surface thereof.
Preferably, the compressor crankshaft is provided with a drainage hole.
Preferably, the number of the drainage holes is not less than two.
In order to achieve the above object, the present invention further provides a compressor, including any of the above compressor crankshafts.
In order to achieve the above object, the present invention further provides an air conditioner, including the above compressor.
The utility model provides a compressor crankshaft, compressor and air conditioner have following advantage:
firstly, the ratio of the outer diameter of the thrust surface of the compressor crankshaft to the outer diameter of the short shaft is more than or equal to 1.265:1 and less than or equal to 1.922:1, and in the range of the ratio, the reliability of the compressor can be ensured, and the low abrasion and the high performance of the compressor can be considered;
and secondly, under the condition that the prior art is pushed to be light, the crankshaft can meet the requirement of light weight through the design requirement of the outer diameter of the thrust surface.
Drawings
Fig. 1 is a schematic structural view of a compressor crankshaft in a preferred embodiment of the present invention;
FIG. 2 is a side view of a compressor crankshaft in a preferred embodiment of the present invention;
fig. 3 is a graph illustrating the energy efficiency ratio of the compressor and the ratio of the outer diameter of the thrust surface of the crankshaft to the outer diameter of the short shaft according to the preferred embodiment of the present invention.
Wherein the reference numerals are as follows:
101-long axis; 102-an eccentric shaft; 103-minor axis; 104-thrust face; d-the outer diameter of the thrust surface; d-the outer diameter of the minor axis; COP-energy efficiency ratio.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The present invention can also be implemented or applied through other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the drawings provided in the present embodiment are only for illustrating the basic idea of the present invention, and the drawings only show the components related to the present invention rather than being drawn according to the number, shape and size of the components in actual implementation, and the form, quantity and proportion of each component in actual implementation may be changed at will, and the layout of the components may be more complicated.
Furthermore, each embodiment described below has one or more technical features, which does not mean that all technical features of any embodiment need to be implemented simultaneously by a person using the present invention, or that all technical features of different embodiments can be implemented separately. In other words, in the implementation of the present invention, based on the disclosure of the present invention, and depending on design specifications or implementation requirements, a person skilled in the art can selectively implement some or all of the technical features of any embodiment, or selectively implement a combination of some or all of the technical features of a plurality of embodiments, thereby increasing the flexibility in implementing the present invention. In addition, as used in this specification, the singular forms "a," "an," and "the" include plural referents unless the content clearly dictates otherwise. As used in this specification, the term "or" is generally employed in its sense including "and/or" unless the content clearly dictates otherwise.
The utility model discloses a compressor crankshaft, compressor and air conditioner, the ratio scope of the external diameter of the thrust surface through restriction compressor crankshaft and minor axis, can guarantee the reliability of compressor and can compromise the low wearing and tearing and the high performance of compressor again.
Fig. 1 is a schematic structural diagram of a compressor crankshaft in a preferred embodiment of the present invention, fig. 2 is a side view of the compressor crankshaft in the preferred embodiment of the present invention, and fig. 3 is a schematic curve diagram of an energy efficiency ratio of the compressor, an outer diameter of a thrust surface of the crankshaft, and an outer diameter ratio of a short shaft in the preferred embodiment of the present invention. In fig. 3, the abscissa D/D is the ratio of the outer diameter D of the push surface to the outer diameter D of the short shaft, and the ordinate COP is the energy efficiency ratio, i.e., the ratio of the compressor cooling capacity to the compressor power.
As shown in fig. 1, the present embodiment provides a compressor crankshaft, which includes a long axis 101, an eccentric axis 102 and a short axis 103 connected in sequence, where the long axis 101 is coaxial with the short axis 103, and the eccentric axis 102 is not coaxial with the long axis 101 and the short axis 103, where the eccentric axis 102 is connected to one end surface (i.e. a cross section) of the short axis 103 to form a thrust surface 104, the thrust surface 104 is a mating surface of the eccentric axis 102 with a cylinder cover (not shown), that is, a cross section of the eccentric axis 102 connected to the short axis 103, and the thrust surface 104 functions to reduce friction power consumption of the compressor crankshaft with the cylinder cover during rotation.
As shown in fig. 2 and 3, the ratio of the outer diameter D of the thrust surface 104 to the outer diameter D of the stub shaft 103 is greater than or equal to 1.129:1 and less than or equal to 2.146: 1. With such a structure, the area of the thrust surface 104 is not too large, and the area of the thrust surface 104 is not too small, so that the friction loss can be reduced, the oil lubrication effect can be ensured, the stress concentration can be avoided, the reliability of the crankshaft can be ensured, and the requirement of crankshaft lightening can be met. Preferably, the ratio of the outer diameter D of the thrust surface 104 to the outer diameter D of the short shaft 103 is greater than or equal to 1.265:1 and less than or equal to 1.922:1, and in this case, the COP is more preferable. Further, the ratio of the outer diameter D of the thrust surface 104 to the outer diameter D of the stub shaft 103 is equal to 1.741:1, where the COP is optimal.
Preferably, the outer peripheral surface of the eccentric shaft 102 is provided with axially extending grooves (not shown). The axial grooves are used for containing lubricating oil, so that the lubricating of the thrust surface 104 is more sufficient, and the motion resistance of the crankshaft of the compressor is reduced. Preferably, the compressor crankshaft is provided with a drainage hole (not shown), and the drainage hole can be arranged on the long shaft 101, the eccentric shaft 102 or the short shaft 103. Furthermore, the number of the drainage holes is not less than two. Through setting up the drainage hole, especially when being no less than two drainage holes, can make the lubricating oil around the compressor crankshaft pass through, reduce the resistance of compressor crankshaft motion in-process.
Further, the embodiment also provides a compressor, which comprises the compressor crankshaft of the embodiment. The compressor may be a rotary compressor. The embodiment also provides an air conditioner comprising the compressor of the embodiment.
Claims (8)
1. A compressor crankshaft is characterized by comprising a long shaft, an eccentric shaft and a short shaft which are sequentially connected, wherein the long shaft is coaxial with the short shaft, the eccentric shaft is not coaxial with the long shaft and the short shaft, and the eccentric shaft is connected with one cross section of the short shaft to form a thrust surface; the ratio of the outer diameter of the thrust surface to the outer diameter of the short shaft is greater than or equal to 1.129:1 and less than or equal to 2.146: 1.
2. The compressor crankshaft of claim 1, wherein a ratio of an outer diameter of the thrust surface to an outer diameter of the stub shaft is greater than or equal to 1.265:1 and less than or equal to 1.922: 1.
3. The compressor crankshaft of claim 2, wherein a ratio of an outer diameter of said thrust surface to an outer diameter of said stub shaft is equal to 1.741: 1.
4. A compressor crankshaft according to any one of claims 1 to 3, wherein the eccentric shaft is provided with axially extending grooves on its outer circumferential surface.
5. A compressor crankshaft according to any one of claims 1 to 3, wherein said compressor crankshaft is provided with a drainage bore.
6. The compressor crankshaft of claim 5, wherein the number of said drainage holes is not less than two.
7. A compressor, characterized in that it comprises a compressor crankshaft according to any one of claims 1 to 6.
8. An air conditioner characterized by comprising the compressor of claim 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120614119.3U CN214660709U (en) | 2021-03-25 | 2021-03-25 | Compressor crankshaft, compressor and air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120614119.3U CN214660709U (en) | 2021-03-25 | 2021-03-25 | Compressor crankshaft, compressor and air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214660709U true CN214660709U (en) | 2021-11-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120614119.3U Active CN214660709U (en) | 2021-03-25 | 2021-03-25 | Compressor crankshaft, compressor and air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214660709U (en) |
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2021
- 2021-03-25 CN CN202120614119.3U patent/CN214660709U/en active Active
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