Crankshaft of refrigerator compressor with good heat dissipation effect

Abstract

The utility model relates to the technical field of refrigerator compressors, in particular to a crankshaft of a refrigerator compressor, which is good in heat dissipation effect, and adopts the technical scheme that the crankshaft comprises a heat dissipation copper sleeve I, a heat dissipation copper sleeve II, an eccentric block and a screw rod, a mounting block I is mounted on the side surface of the eccentric block, and a shaft body is mounted at one end, deviating from the eccentric block, of the mounting block I; fixing blocks are welded to the two sides of the first heat dissipation copper sleeve, connecting plates are welded to the two sides of the second heat dissipation copper sleeve, screw holes are formed in the two connecting plates, screw rods are in threaded connection with the inner walls of the two screw holes, screw grooves are formed in the tops of the two fixing blocks, and the bottoms of the two screw rods are in engaged connection with the two screw grooves correspondingly. A second mounting block is mounted on the side, away from the first mounting block, of the eccentric block. The utility model has the advantages that the heat generated during the movement of the shaft body can be absorbed, and the influence on the structural strength of the shaft body due to overhigh temperature of the shaft body is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of refrigerator compressors, in particular to a crankshaft of a refrigerator compressor with good heat dissipation effect. Background Art

[0002] The crankshaft of a refrigerator compressor generally refers to the component inside the compressor that is used to rotate the compressor piston. This crankshaft is composed of a series of precision-made parts. Its function is to convert the rotational motion provided by the electric motor into the linear motion of the compressor piston, thereby compressing and pumping the refrigerant to achieve the effect of freezing or refrigeration.

[0003] Publication number: CN210859105U, discloses a crankshaft for a variable frequency refrigerator compressor, including a crankshaft body, an oil inlet channel is provided on the side wall at the connecting rod neck position of the crankshaft body, an oil through hole is provided at the bottom of the oil inlet channel, the oil through hole passes through the connecting rod neck of the crankshaft body, the outer side of the connecting rod neck of the crankshaft body is provided with oil outlet holes in a circular array, the oil outlet holes penetrate to the oil through hole setting, and the shaft head ends of the crankshaft body are connected with fixed sleeves through a mounting mechanism. The mounting mechanism includes a fixing groove, a clamping groove, a through hole, a spring and a fixing block, two fixing grooves are symmetrically provided at the shaft head end of the crankshaft body, the fixing sleeve is sleeved on the shaft head end of the crankshaft body, the clamping groove is provided at the position of the fixing sleeve corresponding to the fixing groove, the through hole is provided at the bottom of the clamping groove, and penetrates the fixing sleeve setting. The utility model makes the crankshaft difficult to wear, extends the service life of the compressor, and is easy to install.

[0004] The crankshaft will generate heat when it moves. When the crankshaft rotates, the shaft will heat up due to friction and the conversion of mechanical energy into heat energy. Excessive shaft temperature will affect the performance of the lubricating oil, weaken its fluidity and increase its viscosity, thereby reducing the lubrication effect on the crankshaft, increasing friction, and even causing lubricating oil oxidation. The crankshaft in the prior art CN210859105U is not provided with a structure to assist heat dissipation, which affects the performance of the crankshaft. Utility Model Content

[0005] The utility model aims to provide a refrigerator compressor crankshaft with good heat dissipation effect, which can absorb the heat generated by the shaft body during movement, avoid excessive temperature of the shaft body and affect the structural strength of the shaft body, and solve the problem that the crankshaft of the refrigerator compressor is prone to overheating.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a crankshaft of a refrigerator compressor with good heat dissipation effect, comprising a heat dissipation copper sleeve 1, a heat dissipation copper sleeve 2, an eccentric block and a screw, a mounting block 1 is installed on the side of the eccentric block, an end of the mounting block 1 away from the eccentric block is installed with a shaft body, fixing blocks are welded on both sides of the heat dissipation copper sleeve 1, connecting plates are welded on both sides of the heat dissipation copper sleeve 2, two connecting plates are provided with screw holes, the inner walls of the two screw holes are threadedly connected with screws, the tops of the two fixing blocks are provided with screw grooves, the bottoms of the two screw rods are respectively meshed and connected with the two screw grooves, and the side of the eccentric block away from the mounting block 1 is provided with the mounting block 2.

[0007] When using a crankshaft of a refrigerator compressor with good heat dissipation effect in the technical solution, the heat dissipation copper sleeve 1 and the heat dissipation copper sleeve 2 are placed on the outside of the shaft body, and two hand wheels are used to rotate two screws. The two screws are respectively engaged with the screw holes of the two connecting plates and the screw grooves of the two fixing blocks, and the heat dissipation copper sleeve 1 and the heat dissipation copper sleeve 2 are fixedly connected to the shaft body. The coolant enters the heat dissipation copper sleeve 1 from the connecting pipe 1, and the heat dissipation copper sleeve 1 stores the coolant. The coolant enters the heat dissipation copper sleeve 2 from the connecting pipe 2, and the heat dissipation copper sleeve 2 stores the coolant. When the shaft body rotates, heat is generated. The coolant inside the heat dissipation copper sleeve 1 and the heat dissipation copper sleeve 2 absorbs the heat of the shaft body. The heat sinks 1 and the heat sinks 2 outside the heat dissipation copper sleeve 1 and the heat dissipation copper sleeve 2 absorb the heat and dissipate the heat outward.

[0008] Preferably, an eccentric shaft is installed on one end of the second mounting block away from the eccentric block. The eccentric shaft is fixedly connected to the transmission structure.

[0009] Preferably, hand wheels are installed on the tops of the two screw rods, and a distance is left between the two hand wheels and the two sides of the heat dissipation copper sleeve 2. The two screw rods can be rotated by using the two hand wheels, and the two hand wheels will not interfere with the heat dissipation copper sleeve 2 when rotating the two hand wheels.

[0010] Preferably, the outer side of the heat dissipation copper sleeve 1 is provided with heat dissipation fins 1 in a ring array. The heat dissipation fins 1 absorb the heat of the heat dissipation copper sleeve 1.

[0011] Preferably, the outer side of the second heat dissipation copper sleeve is provided with second heat dissipation fins in a ring array, and the second heat dissipation fins absorb the heat of the second heat dissipation copper sleeve.

[0012] Preferably, a connecting pipe 1 is embedded and installed at one end of the heat dissipation copper sleeve 1 away from the eccentric block, and the connecting pipe 1 is connected to the inside of the heat dissipation copper sleeve 1. The coolant enters the inside of the heat dissipation copper sleeve 1 from the connecting pipe 1, and the heat dissipation copper sleeve 1 stores the coolant.

[0013] Preferably, a connecting pipe 2 is embedded and installed at one end of the heat dissipation copper sleeve 2 away from the eccentric block, and the connecting pipe 2 is connected to the inside of the heat dissipation copper sleeve 2. The coolant enters the inside of the heat dissipation copper sleeve 2 from the connecting pipe 2, and the heat dissipation copper sleeve 2 stores the coolant.

[0014] Preferably, the opposite sides of the heat dissipation copper sleeve 1 and the heat dissipation copper sleeve 2 are in contact with the outer side of the shaft body. The heat dissipation copper sleeve 1 and the heat dissipation copper sleeve 2 absorb the heat of the shaft body.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] The utility model arranges a heat dissipation copper sleeve one and a heat dissipation copper sleeve two, and the heat dissipation copper sleeve one and the heat dissipation copper sleeve two are fixed to the outside of the shaft body by two screws. The coolant inside the heat dissipation copper sleeve one and the heat dissipation copper sleeve two absorbs the heat of the shaft body, and the heat dissipation fins one and the heat dissipation fins two outside the heat dissipation copper sleeve one and the heat dissipation copper sleeve two absorb the heat and dissipate the heat outward, thereby achieving the effect of absorbing the heat generated by the shaft body during movement, avoiding excessive temperature of the shaft body and affecting the structural strength of the shaft body. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model from a first angle;

[0018] Figure 2 This is a schematic diagram of the three-dimensional structure of the utility model from a second angle;

[0019] Figure 3 This is a schematic diagram of the structure of the heat dissipation copper sleeve 1, the shaft body and the heat dissipation copper sleeve 2 of the utility model;

[0020] Figure 4 It is a schematic diagram of the structure of the connecting plate and the fixing block of the utility model.

[0021] In the figure: 1. heat sink 1; 2. heat sink copper sleeve 1; 3. shaft; 4. heat sink copper sleeve 2; 5. heat sink 2; 6. hand wheel; 7. mounting block 1; 8. eccentric block; 9. mounting block 2; 10. eccentric shaft; 11. connecting plate; 12. fixing block; 13. connecting pipe 1; 14. connecting pipe 2; 15. screw; 16. screw hole; 17. screw groove. DETAILED DESCRIPTION

[0022] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.

[0023] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific implementation methods disclosed below.

[0024] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the implementation of the present invention, for the sake of convenience, the cross-sectional diagram showing the device structure will not be partially enlarged according to the general scale, and the schematic diagram is only an example, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0025] In order to make the purpose, technical solution and advantages of the present invention more clear, the implementation mode of the present invention will be further described in detail below with reference to the accompanying drawings.

[0026] Embodiment 1

[0027] like Figure 1-Figure 4 As shown, the utility model proposes a refrigerator compressor crankshaft with good heat dissipation effect, including a heat dissipation copper sleeve 2, a heat dissipation copper sleeve 4, an eccentric block 8, a mounting block 9 and a screw 15. A mounting block 7 is installed on the side of the eccentric block 8, and a shaft 3 is installed on the end of the mounting block 7 away from the eccentric block 8. A heat dissipation fin 1 is installed in an annular array on the outside of the heat dissipation copper sleeve 2. A connecting pipe 13 is embedded and installed on the end of the heat dissipation copper sleeve 2 away from the eccentric block 8. The connecting pipe 13 is connected to the inside of the heat dissipation copper sleeve 2. A heat dissipation fin 5 is installed in an annular array on the outside of the heat dissipation copper sleeve 4. A connecting pipe 14 is embedded and installed on the end of the heat dissipation copper sleeve 4 away from the eccentric block 8. The connecting pipe 13 is connected to the inside of the heat dissipation copper sleeve 2. Tube 2 14 is connected to the inside of heat dissipation copper sleeve 2 4, fixing blocks 12 are welded on both sides of heat dissipation copper sleeve 1 2, connecting plates 11 are welded on both sides of heat dissipation copper sleeve 2 4, screw holes 16 are provided on the two connecting plates 11, screw rods 15 are threadedly connected to the inner walls of the two screw holes 16, hand wheels 6 are installed on the tops of the two screw rods 15, the opposite sides of heat dissipation copper sleeve 1 2 and heat dissipation copper sleeve 2 4 are in contact with the outer side of the shaft body 3, screw grooves 17 are provided on the tops of the two fixing blocks 12, and the bottoms of the two screw rods 15 are respectively meshed and connected with the two screw grooves 17, a mounting block 2 9 is installed on the side of the eccentric block 8 away from the mounting block 1 7, and an eccentric shaft 10 is installed on the end of the mounting block 29 away from the eccentric block 8.

[0028] In this embodiment, by placing the heat dissipation copper sleeve 1 2 and the heat dissipation copper sleeve 2 4 on the outside of the shaft body 3, using two hand wheels 6 to rotate the two screws 15, the two screws 15 are respectively engaged with the screw holes 16 of the two connecting plates 11 and the screw grooves 17 of the two fixing blocks 2 12, and the heat dissipation copper sleeve 1 2 and the heat dissipation copper sleeve 2 4 are fixedly connected to the shaft body 3, the coolant enters the heat dissipation copper sleeve 1 2 from the connecting pipe 1 13, the heat dissipation copper sleeve 1 2 stores the coolant, the coolant enters the heat dissipation copper sleeve 2 4 from the connecting pipe 2 14, the heat dissipation copper sleeve 2 4 stores the coolant, the shaft body 3 generates heat when rotating, the coolant inside the heat dissipation copper sleeve 1 2 and the heat dissipation copper sleeve 2 4 absorbs the heat of the shaft body 3, the heat dissipation fins 1 and 2 5 outside the heat dissipation copper sleeve 1 2 and the heat dissipation copper sleeve 2 4 absorb the heat, and dissipate the heat outward.

[0029] Embodiment 2

[0030] like Figure 1-Figure 4 As shown, the utility model proposes a crankshaft of a refrigerator compressor with good heat dissipation effect. Compared with the first embodiment, this embodiment also includes: a heat dissipation copper sleeve 2 4 and a hand wheel 6, and a distance is left between the two hand wheels 6 and the two sides of the heat dissipation copper sleeve 2 4.

[0031] In this embodiment, due to the distance between the two hand wheels 6 and the two sides of the heat dissipation copper sleeve 2 4 , when the two hand wheels 6 are rotated, no interference with the heat dissipation copper sleeve 2 4 occurs.

[0032] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A crankshaft of a refrigerator compressor with good heat dissipation effect, comprising a heat dissipation copper sleeve 1 (2), a heat dissipation copper sleeve 2 (4), an eccentric block (8) and a screw (15), characterized in that: A mounting block 1 (7) is installed on the side of the eccentric block (8); a shaft (3) is installed on the end of the mounting block 1 (7) away from the eccentric block (8); fixing blocks (12) are welded on both sides of the heat dissipation copper sleeve 1 (2); connecting plates (11) are welded on both sides of the heat dissipation copper sleeve 2 (4); screw holes (16) are provided on the two connecting plates (11); screw rods (15) are threadedly connected to the inner walls of the two screw holes (16); screw grooves (17) are provided on the tops of the two fixing blocks (12); the bottoms of the two screw rods (15) are respectively meshed and connected with the two screw grooves (17); and a mounting block 2 (9) is installed on the side of the eccentric block (8) away from the mounting block 1 (7).

2. The crankshaft of a refrigerator compressor with good heat dissipation effect according to claim 1, characterized in that: An eccentric shaft (10) is installed on one end of the second mounting block (9) away from the eccentric block (8).

3. The crankshaft of a refrigerator compressor with good heat dissipation effect according to claim 1, characterized in that: A hand wheel (6) is installed on the top of the two screw rods (15), and a distance is left between the two hand wheels (6) and the two sides of the heat dissipation copper sleeve (4).

4. The crankshaft of a refrigerator compressor with good heat dissipation effect according to claim 1, characterized in that: The heat dissipation copper sleeve (2) is provided with heat dissipation fins (1) in a circular array on the outside.

5. The crankshaft of a refrigerator compressor with good heat dissipation effect according to claim 1, characterized in that: The outer side of the second heat dissipation copper sleeve (4) is provided with second heat dissipation fins (5) in a ring array.

6. The crankshaft of a refrigerator compressor with good heat dissipation effect according to claim 1, characterized in that: A connecting pipe (13) is embedded and installed at one end of the heat dissipation copper sleeve (2) away from the eccentric block (8), and the connecting pipe (13) is connected to the inside of the heat dissipation copper sleeve (2).

7. The crankshaft of a refrigerator compressor with good heat dissipation effect according to claim 1, characterized in that: A second connecting pipe (14) is embedded and installed at one end of the second heat dissipation copper sleeve (4) away from the eccentric block (8), and the second connecting pipe (14) is connected to the inside of the second heat dissipation copper sleeve (4).

8. The crankshaft of a refrigerator compressor with good heat dissipation effect according to claim 1, characterized in that: The opposite sides of the heat dissipation copper sleeve 1 (2) and the heat dissipation copper sleeve 2 (4) are in contact with the outer side of the shaft body (3).

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