CN205225733U - Air condition compressor's bent axle - Google Patents

Abstract

The utility model provides an air condition compressor's bent axle belongs to mechanical technical field. Current air condition compressor energy consumption height, inefficiency and problem with high costs have been solved to it. This air condition compressor's bent axle, the one end of bent axle has protrusion and eccentric settings's an eccentric portion, and the bent axle is the integral type structure with off -centre portion, and off -centre portion is cylindricly, and the axial along the bent axle in the bent axle has the fuel feeding passageway that runs through, has in the off -centre portion to be used for heavy vestibule, and the both ends of off -centre portion have the ring channel respectively, and a cell wall of ring channel be the terminal surface of off -centre, and the bottom of ring channel has an oil through, and fluid in the oil through messenger fuel feeding passageway is fluxible to be arrived off -centre and locates. This air condition compressor's bent axle has cost, the energy consumption that reduces air condition compressor, improves the advantage of air condition compressor efficiency.

Description

A crankshaft of an air conditioner compressor

technical field

The utility model belongs to the technical field of machinery and relates to a crankshaft of an air conditioner compressor.

Background technique

The air conditioner compressor is a driven fluid machine that raises the low-pressure refrigerant gas to a high pressure. The air conditioner compressor is the heart of the refrigeration system. The rotary piston air conditioner compressor is widely used in household air conditioners.

There are many types of air-conditioning compressors. For example, Chinese patent literature discloses a rotary translational piston compressor [application number: 201310738478.X; application publication number: CN103644117A], which includes a cylinder with a piston chamber and a crankshaft with an eccentric portion. The part is located in the piston chamber, the cylinder is provided with blades, the eccentric part is covered with a piston, and the outer peripheral surface of the piston has a flat part, and a spring is arranged between the blade and the cylinder, and the blade is against the flat part on the outer peripheral surface of the piston. The end face of the vane abutting against the piston is a plane, and the eccentric part and the piston are connected by a friction-reducing structure that enables the end face of the vane to always abut against the plane part on the outer peripheral surface of the piston.

In the rotary translational piston compressor of this structure, the crankshaft and the piston are of split structure, the crankshaft has an eccentric part, the piston is sleeved on the eccentric part, and the eccentric part and the piston are provided with polytetrafluoroethylene. The anti-friction sleeve, the anti-friction sleeve, the eccentric part and the piston are clearance fit, and there are also a first helical groove, a second helical groove, a third helical groove, a first communication hole and a third helical groove between the eccentric part and the piston. Structures such as two communicating holes have many parts, complex structures, and high manufacturing costs; a piece is cut off from the outer circle of the piston to form a small plane in contact with the end surface of the blade, and the crankshaft of this structure will still drive the piston when it rotates to make the piston exist. The tendency of self-rotation consumes part of the energy, and the energy consumption is high, thereby reducing the efficiency of the air-conditioning compressor.

Contents of the invention

The purpose of this utility model is to propose a crankshaft of an air-conditioning compressor aiming at the above-mentioned problems existing in the prior art, and solve how to reduce the energy consumption of the existing air-conditioning compressor and reduce the cost of the air-conditioning compressor.

The purpose of this utility model can be achieved through the following technical solutions: a crankshaft of an air-conditioning compressor, characterized in that one end of the crankshaft has a protruding and eccentrically arranged eccentric part, and the crankshaft and the eccentric part are an integral structure , the eccentric part is cylindrical, the crankshaft has a through oil supply passage along the axial direction of the crankshaft, the eccentric part has a cavity for weight removal, and the two ends of the eccentric part respectively have annular grooves , one groove wall of the annular groove is the end face of the eccentric portion, and the bottom of the annular groove has an oil through hole, and the oil through hole enables the oil in the oil supply channel to flow to the eccentric portion.

The crankshaft and eccentric part of the air conditioner compressor are an integrated structure, with fewer parts and simple structure, which reduces production costs. The eccentric part rotates with the crankshaft, and there is no friction between the eccentric part and the crankshaft, that is, there is no rotation of the eccentric part. The problem of internal friction, and the setting of the cavity can greatly reduce the weight of the eccentric part, greatly reduce the energy consumption required by the crankshaft when it is rotating, and also reduce vibration and noise, and improve the efficiency of the air conditioner compressor; the setting of the oil hole and the annular groove, The oil in the oil supply channel can enter the two ends of the eccentric part through the oil hole and the annular groove, which can lubricate the eccentric part, make the eccentric part rotate smoothly, reduce energy consumption, and improve the efficiency of the air conditioner compressor .

In the aforementioned crankshaft of an air-conditioning compressor, the bore passes through the eccentric portion along the axial direction of the crankshaft. The cavity runs through the eccentric part, which is easy to form, and the oil at both ends of the eccentric part can be connected through the cavity to improve the lubrication effect of the eccentric part, make the eccentric part rotate smoothly, reduce energy consumption, and improve the efficiency of the air conditioner compressor.

In the aforementioned crankshaft of an air conditioner compressor, the distance between the walls of the cavity decreases gradually from both ends of the eccentric portion toward the middle. This kind of cavity structure is easy to form, and when the crankshaft and eccentric part are rotating, the oil in the cavity can be better thrown towards the two ends of the eccentric part, ensuring the lubrication of the two ends of the eccentric part and making the eccentric part Smooth rotation, reduced energy consumption and improved efficiency of air conditioner compressors.

In the aforementioned crankshaft of an air conditioner compressor, the edges of both end surfaces of the eccentric portion have rounded corners, and the radius of the rounded corners is 0.03-0.12 mm. Only rounded corners can be used here, chamfering is not allowed.

In the aforementioned crankshaft of an air conditioner compressor, the width of the annular groove along the axial direction of the crankshaft is 2-4mm. The annular groove has a certain width to ensure that the oil can pass through the annular groove, so that the oil can flow smoothly, and the amount of oil flowing is relatively reasonable.

In the aforementioned crankshaft of an air conditioner compressor, the end of the crankshaft away from the end of the eccentric portion has a positioning groove arranged obliquely. The setting of the positioning groove facilitates the installation of the crankshaft.

In the aforementioned crankshaft of an air-conditioning compressor, the crankshaft is made of low-carbon alloy steel such as 20CrMnTi or low-alloy cast iron, and the circumferential outer wall of the eccentric portion is subjected to wear-resistant treatment.

In the above crankshaft of an air conditioner compressor, the air conditioner compressor further includes a cylinder, and blades are arranged in the cylinder, and the blades lean against the circumferential outer wall of the eccentric portion, and the blades and the eccentric portion The abutting end is an R surface, and the blade and the eccentric part divide the inner chamber of the cylinder into a suction chamber and a compression chamber which are not connected to each other. When the motor of the air conditioner compressor rotates, the rotor drives the crankshaft and the eccentric part to rotate, so that the volume of the suction chamber and the compression chamber change, and the suction and compression are performed in turn to complete the working cycle of the compressor; the upper cylinder is fixedly connected to both sides of the cylinder The cover and the lower cylinder head, the upper cylinder head, the lower cylinder head and the cylinder form an inner cavity, the blades and the eccentric part are located in the inner cavity, and there are gaps between the two ends of the eccentric part and the upper cylinder cover and the lower cylinder cover. The setting of the annular groove makes passages exist between the oil hole and the upper cylinder head and the lower cylinder head, and the oil in the oil supply passage can enter the inner cavity of the cylinder through the oil hole, the annular groove, and the gap, and enter the eccentric In the cavity of the upper part, when the oil is located in the gap, an oil film is formed to lubricate the eccentric part, the upper cylinder head and the lower cylinder head, so that the eccentric part rotates smoothly, reduces energy consumption, and improves the efficiency of the air conditioner compressor; the blade and The end where the eccentric part contacts is the R surface, which can ensure that the eccentric part can divide the inner cavity into a suction chamber and a compression chamber that are not connected to each other, and at the same time reduce the contact area between the blade and the eccentric part, that is, reduce the impact of the blade on the eccentric part. The resistance makes the eccentric part rotate smoothly, reduces energy consumption, and improves the efficiency of the air conditioner compressor.

Compared with the prior art, the crankshaft of the air conditioner compressor provided by the utility model has the following advantages:

1. The crankshaft of the air conditioner compressor has a simple structure and fewer components, which reduces the cost of the air conditioner compressor.

2. The eccentric part of the air conditioner compressor rotates together with the crankshaft. The eccentric part and the crankshaft are of an integrated structure. There is no friction between the eccentric part and the crankshaft, that is, there is no energy consumption problem of the piston rotation in the existing compressor technology, and The arrangement of the cavity greatly reduces the weight of the eccentric part, reduces the energy required for the rotation of the eccentric part, reduces energy consumption, improves the efficiency of the air conditioner compressor, reduces vibration and noise at the same time.

3. The air-conditioning compressor is equipped with an oil hole and an annular groove, so that the oil supply channel is connected with the inner cavity of the cylinder, so that the oil in the oil supply channel can enter the inner cavity to lubricate the eccentric part, so that the eccentric part Smooth rotation, reduced energy consumption and improved efficiency of air conditioner compressors.

Description of drawings

Figure 1 is a schematic diagram of the overall structure of the air conditioner compressor crankshaft.

Fig. 2 is a sectional view of the overall structure of the crankshaft of the air conditioner compressor.

Fig. 3 is a partial structural schematic diagram of the air conditioner compressor.

Fig. 4 is a partial structural sectional view of the air conditioner compressor.

Fig. 5 is an enlarged view of the area of Fig. 2A of the crankshaft of the air conditioner compressor.

Fig. 6 is an enlarged view of the area of Fig. 3B of the crankshaft of the air conditioner compressor.

In the figure, 1. crankshaft; 2. eccentric part; 21. cavity; 3. oil supply channel; 4. annular groove; 5. oil hole; 6. positioning groove; 7. cylinder; 8. vane; 9. suction cavity; 10, compression cavity.

detailed description

The following are specific embodiments of the utility model and in conjunction with the accompanying drawings, the technical solution of the utility model is further described, but the utility model is not limited to these embodiments.

As shown in FIGS. 1 , 2 and 3 , the air conditioner compressor includes a crankshaft 1 , a cylinder 7 and blades 8 .

One end of the crankshaft 1 has a protruding eccentric part 2. The crankshaft 1 and the eccentric part 2 are an integral structure. The crankshaft 1 has an oil supply channel 3 penetrating along the axial direction of the crankshaft 1. The eccentric part 2 is cylindrical and the eccentric part 2 is eccentrically arranged on the crankshaft 1, and the edges of both ends of the eccentric part 2 have rounded corners. In this embodiment, the radius of the rounded corners is 0.08mm. In actual production, the radius of the rounded corners can be 0.03mm or 0.12mm. In this embodiment, the crankshaft 1 is made of low-carbon alloy steel such as 20CrMnTi. In actual production, the crankshaft 1 can still be made of low-alloy cast iron. The peripheral outer wall of the eccentric portion 2 is made less likely to wear. The end of the crankshaft 1 away from the end of the eccentric portion 2 has a positioning groove 6 arranged obliquely.

Both sides of the cylinder 7 are fixedly connected with an upper cylinder head and a lower cylinder head respectively, and an inner cavity is formed between the upper cylinder head, the lower cylinder head and the inner hole of the cylinder 7, as shown in Figure 6, the inner side wall of the cylinder 7 is provided with The vane 8, the vane 8 abuts against the circumferential outer wall of the eccentric part 2 under the action of the spring force, the vane 8 and the eccentric part 2 divide the inner chamber of the cylinder 7 into a suction chamber 9 and a compression chamber 10 which are not connected to each other, The end of the vane 8 abutting against the eccentric portion 2 is an R surface.

The eccentric part 2 has a cavity 21 for weight removal. In this embodiment, the number of the cavity 21 is two, and the two cavities 21 penetrate the eccentric part 2 along the axial direction of the crankshaft 1. The two cavities 21 Centering on a diameter of the end surface of the eccentric part 2, it is symmetrically arranged on the left and right, and the width of one end of the two cavities 21 close to each other along the radial direction of the eccentric part 2 is larger than the width of the other ends of the two cavities 21 along the radial direction of the eccentric part 2, as shown in the figure 4, the distance between the walls of the two cavities 21 gradually decreases from both ends of the eccentric part 2 toward the middle. In actual production, three or four cavities 21 may also be provided.

As shown in Figure 5, both ends of the eccentric portion 2 have annular grooves 4. In this embodiment, the width of the annular groove 4 along the axial direction of the crankshaft 1 is 3 mm. In actual production, the width of the annular groove 4 along the axial direction of the crankshaft 1 is The width can be 2mm or 4mm. One groove wall of the annular groove 4 is the end face of the eccentric part 2, and the bottom of the annular groove 4 has an oil through hole 5, and the oil through hole 5 allows the oil supply channel 3 to pass through the annular groove 4, the upper cylinder head, the lower cylinder head and the eccentric part 2 The gap between them communicates with the inner cavity of the cylinder 7, and the oil in the oil supply channel 3 can enter the inner cavity of the cylinder through the oil hole 5, the annular groove 4 and the gap, and enter the cavity 21 of the eccentric part 2. middle.

The specific embodiments described herein are only examples to illustrate the spirit of the present invention. Those skilled in the technical field to which the utility model belongs can make various modifications or supplements to the described specific embodiments or adopt similar methods to replace them, but they will not deviate from the spirit of the utility model or go beyond the appended claims defined range.

Although the crankshaft 1, the eccentric part 2, the cavity 21, the oil supply channel 3, the annular groove 4, the oil hole 5, the positioning groove 6, the cylinder 7, the blade 8, the suction chamber 9, the compression chamber 10, etc. term, but does not exclude the possibility of using other terms. These terms are only used to describe and explain the essence of the utility model more conveniently; interpreting them as any kind of additional limitation is against the spirit of the utility model.

Claims (8)

1. the bent axle of an air condition compressor, it is characterized in that, one end of described bent axle (1) has protrusion and the eccentric part of eccentric setting (2), described bent axle (1) and eccentric part (2) are integral structures, described eccentric part (2) is in cylindric, there is along the axis of bent axle (1) in described bent axle (1) oil supply gallery (3) run through, there is in described eccentric part (2) vestibule (21) for duplicate removal, the two ends of described eccentric part (2) have circular groove (4) respectively, a cell wall of described circular groove (4) is the end face of eccentric part (2), the bottom of described circular groove (4) has oil through (5), described oil through (5) makes the fluid in oil supply gallery (3) can flow to eccentric part (2) place.

2. the bent axle of a kind of air condition compressor according to claim 1, is characterized in that, described vestibule (21) runs through eccentric part (2) along the axis of bent axle (1).

3. the bent axle of a kind of air condition compressor according to claim 2, is characterized in that, the distance between the wall of described vestibule (21) chamber is reduced towards centre gradually by the two ends of eccentric part (2).

4. the bent axle of a kind of air condition compressor according to claim 1 or 2 or 3, is characterized in that, the edge of described eccentric part (2) both ends of the surface has fillet, and the radius of described fillet is 0.03-0.12mm.

5. the bent axle of a kind of air condition compressor according to claim 1 or 2 or 3, is characterized in that, described circular groove (4) is 2-4mm along the width that bent axle (1) is axial.

6. the bent axle of a kind of air condition compressor according to claim 1 or 2 or 3, is characterized in that, described bent axle (1) has away from the end of eccentric part (2) one end the locating slot (6) be obliquely installed.

7. the bent axle of a kind of air condition compressor according to claim 1 or 2 or 3, it is characterized in that, described bent axle (1) adopts low-carbon alloy steel or low-alloy cast iron material to make, and the outer circumferential wall of described eccentric part (2) passes through Wear-resistant Treatment.

8. the bent axle of a kind of air condition compressor according to claim 1 or 2 or 3, it is characterized in that, described air condition compressor also comprises cylinder (7), blade (8) is provided with in described cylinder (7), described blade (8) is resisted against on the outer circumferential wall of eccentric part (2), one end that described blade (8) and eccentric part (2) lean is R face, and the inner chamber of cylinder (7) is divided into mutual disconnected suction chamber (9) and compression chamber (10) by described blade (8) and eccentric part (2).