Top cover and valve plate sealing structure of hermetic compressor

Abstract

The invention discloses an epicranium and valve plate sealing structure of sealing compressor, which comprises the following parts: valve board, epicranium, sealing pad and friction warp, wherein the flow channel is set on the valve plate to force the working fluid to the compression chamber in the cylinder; the epicranium is fixed on one side of valve plate to divide the compression chamber into relative low pressure working fluid space and relative high pressure working fluid space that are low pressure side and high pressure side; the sealing pad is clamped between the valve plate and epicranium to prevent the working fluid from leaking; the fiction warp is allocated in more than one side of valve plate or epicranium to make the low and high pressure sides possess more friction force than other parts, which prevents the sealing pad from moving due to pressure difference of working fluid.

Description

technical field [0001] The invention belongs to a hermetic compressor, in particular to a sealing structure of a head cover and a valve plate of a hermetic compressor which prevents working fluid from leaking between a high-pressure part and a low-pressure part located between the head cover and a valve plate. Background technique [0002] figure 1 as well as figure 2 The prior art hermetic compressor structure is shown. As shown in the figure, the airtight container 1 is composed of an upper container 1t and a lower container 1b, and forms an airtight space inside. There is a bracket 2 inside the airtight container 1 . The stator 3 is installed on the bracket 2, and the stator 3 is supported inside the airtight container 1 by the spring 2s. [0003] A rotor 4 penetrating in the vertical direction is attached to the center of the stator 3 . The rotor 4 rotates under the interaction with the electromagnetic field of the stator 3 . The rotor 4 is installed on the cranks...

AI Technical Summary

Problems solved by technology

In particular, the parts of the head cover 10 and the valve plate 15 corresponding to the partition 14p are parts with very high processing precision, and the above phenomenon is even more serious.

[0013] As described above, if the partition 14p continues to flow due to the pressure difference between the high-pressure side 10t and the low-pressure side 10b, the partition 14p ruptures, and the working fluid leaks between the high-pressure side 10t and the low-pressure side 10b, and the high-pressure The working fluid flows into the compression chamber 6' through the low-pressure side 10b, thereby reducing the working efficiency and reliability of the compressor

[0014] In addition, if the working fluid leaks from the high pressure side 10t to the low pressure side 10b, the suction muffler 11 will melt under the influence of the high temperature and high pressure working fluid discharged from the high pressure side 10t, and the compressor will fail.

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