Check valve and rotor type compressor

A check valve and spool technology, applied in the field of compressors, can solve the problems of easily damaged springs and low reliability of check valves, and achieve the effects of improving reliability, increasing service life, and reducing lateral friction

Inactive Publication Date: 2020-08-25
SHANGHAI HITACHI ELECTRICAL APPLIANCES CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the check valves in the prior art have at least the following problems: the check valves in the prior art are highly dependent on the spring, but the spring is easily damaged due to frequent compression and stretching, which leads to the reliability of the check valve. lower

Method used

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  • Check valve and rotor type compressor
  • Check valve and rotor type compressor
  • Check valve and rotor type compressor

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Embodiment Construction

[0041] In order to make the purpose, advantages and characteristics of the present invention clearer, the following in conjunction with the attached Figure 1~4 A check valve and a rotary compressor proposed by the present invention are further described in detail. It should be noted that all the drawings are in a very simplified form and use imprecise scales, and are only used to facilitate and clearly assist the purpose of illustrating the embodiments of the present invention.

[0042] The embodiment of the present invention provides a check valve, refer to image 3 As shown, the check valve includes a valve core 21 and a valve seat 22;

[0043] The valve seat 22 is provided with an inner cavity along the first direction, and the angle θ between the first direction and the horizontal plane satisfies 0° image 3 The angle θ between the first direction and the horizontal plane in is 90°;

[0044] The valve core 21 is slidably arranged in the inner cavity, and divides the inne...

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Abstract

The invention provides a check valve and a rotor type compressor and belongs to the technical field of compressors. The check valve comprises a valve element and a valve seat. The valve seat is provided with an inner cavity in a first direction, and the included angle theta between the first direction and a horizontal plane meets a relationship that theta is greater than 0 but smaller than or equal to 90 degrees; the valve element is slidably arranged in the inner cavity and divides the inner cavity into a first inner cavity and a second inner cavity from top to bottom in a gravity direction;the valve seat is provided with an air inlet and an air outlet communicating to the second inner cavity, and when the pressure of the air inlet is smaller than or equal to the pressure of the air outlet, the valve element is located in the second inner cavity, so that the air inlet and the air outlet do not communicate; when the pressure of the air inlet is greater than or equal to the pressure ofthe air outlet, the valve element moves toward the direction of the first inner cavity, so that the air inlet and the air outlet communicate. As a spring of the check valve in the prior art is cancelled, the reliability of the check valve is no longer limited, so that the reliability of the check valve is improved.

Description

technical field [0001] The invention relates to the technical field of compressors, in particular to a check valve and a rotor compressor. Background technique [0002] Rotary compressors are widely used in air conditioners, refrigerators and other electrical equipment, and the volumetric efficiency of the compressor is one of the main parameters for evaluating the performance of the compressor. [0003] At present, in order to improve the volumetric efficiency of the rotary compressor, a check valve is usually installed in a compressor with an injection technology structure or an air supplement enthalpy increase structure, which can reduce the return flow of refrigerant, thereby increasing the volume of the compressor efficiency. Check valves in the prior art are usually as figure 1 and figure 2 As shown, the check valve includes a base 1, a valve core 2, a return spring 3, and a component 4 for travel limit and connection. The check valve can effectively reduce the ret...

Claims

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Application Information

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IPC IPC(8): F04C29/12F04C29/00
CPCF04C29/126F04C29/00
Inventor 匡勇军刘春慧朱文杰张中樑
Owner SHANGHAI HITACHI ELECTRICAL APPLIANCES CO LTD
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