Assembling method of rotary double cylinder compressor pump body

Abstract

The invention discloses a method for assembling a pump body of a rotary duplex cylinder compressor, which comprises the steps: (1) after the centers of an upper cylinder and an upper flange are regulated, the upper cylinder and the upper flange are fixed into a component (M) with a short screw; (2) the center of a lower cylinder is regulated corresponding to the component (M), and the upper cylinder is separated from the component (M) after the corresponding position of the lower cylinder to the component (M); (3) after the centers of the lower cylinder and a lower flange are regulated, the lower cylinder and the lower flange are fixed into a component (N) with a short screw; (4) an upper roller, a lower roller, a sliding vane and a crank shaft are put in the component (M) and the component (N); a baffle is put between the component (M) and the component (N); according to step (2), the corresponding position of the lower cylinder to the component (M) is recorded; the component (M) is matched with the component (N) and fixed together with the component by long screws to form a whole pump body. The method can reduce spillage to the highest extent, maximizes the universal use of existing devices and has detectable clearance.

Description

technical field [0001] The invention relates to a compressor used in an air conditioner, a cold storage, etc., in particular to a double-cylinder rotary compressor. Background technique [0002] Such as figure 1 As shown, the existing two-cylinder rotary compressor generally includes: a casing 1, a motor 2 and a pump body mechanism, and the pump body mechanism mainly includes an upper muffler 3, a short screw 4, an upper flange 5, an upper cylinder 6, a middle Partition plate 7, lower cylinder 8, long screw 9, lower muffler 10, lower flange 11, lower roller 12, upper roller 13 and crankshaft 14, and upper and lower slide plates. Wherein the partition plate 7 divides the upper and lower cylinders into two independent working chambers. The upper cylinder 6 and the lower cylinder 8 are equipped with rollers and slides, and the upper and lower slides are in close contact with the upper and lower rollers under the action of the spring, so that the working chamber of each cylind...

AI Technical Summary

Problems solved by technology

[0011] 1. In step B, when adjusting the position of components M and N, if the relative position of the inner diameter of the upper and lower cylinders is measured before assembling M and N as the basis for adjustment, it is cumbersome to carry out precise measurement on the assembly line, and the measurement The process is very slow and not suitable for mass production

Another assembly method is to rotate the crankshaft to adjust M and N, but it is very unrealistic to let the heavy component N self-position on the component M, that is to say, the relative position of the upper / lower cylinder is arbitrary

In this way, it is difficult to ensure that the fixed position can ensure the minimum clearance of the cylinder on the side of the compression chamber.

Therefore, there is no guarantee that the refrigerant will leak the least during the compression process, which will affect the cooling capacity and quality of the compressor

[0012] 2. In step C, the operation steps to check whether the lower eccentric clearance of the lower roller and the crankshaft meet the clearance requirements are very cumbersome

The crankshaft may be placed obliquely in the upper flange, especially when the eccentric circle of the crankshaft rotates to the position of the compression chamber, the force of the compressed gas acting on the crankshaft increases, causing the crankshaft to tilt

For a single cylinder, the height of the cylinder is not high, so the tilt distance is small, and the self-positioning range of the lower flange is also small

While the height of the double cylinder is higher, such as Figure 4 As shown, the tilt distance of the crankshaft is also relatively large, so the self-positioning range of the lower flange is also relatively large

Therefore, the method of positioning the lower flange by rotating the crankshaft in the single cylinder is not applicable in the double cylinder

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