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Non-return valve and compressor comprising same

A check valve, valve seat technology, applied in the direction of control valve, safety valve, balance valve, etc., can solve the problem of no good solution, and achieve the effect of improving reliability

Inactive Publication Date: 2016-04-06
GREE ELECTRIC APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There is currently no good workaround for this problem

Method used

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  • Non-return valve and compressor comprising same
  • Non-return valve and compressor comprising same

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Embodiment Construction

[0026] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0027] Such as figure 2 As shown, the present invention provides a check valve.

[0028] Specifically, the check valve includes a valve body 10 , a valve seat 20 and a valve core 30 . Wherein, the valve seat 20 is connected with the valve body 10 , and the valve core 30 is movably suspended on the valve seat 20 so that there is a distance between the valve seat 20 and the valve core 30 . There is no contact between the valve seat 20 and the valve core 30, and when the valve core 30 moves relative to the valve seat 20, the friction between the valve seat 20 and the valve core 30 is air friction.

[0029] The valve core 30 and the valve seat 20 are set as a suspension structure without absolu...

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PUM

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Abstract

The invention provides a non-return valve and a compressor comprising same. The non-return valve comprises a valve body, a valve seat connected to the valve body, and a valve element which can be movably suspended above the valve seat for providing a spacing distance between the valve seat and the valve element, wherein when the valve element moves relative to the valve seat, friction between the valve element and the valve seat is air friction. A suspending structure without absolute contact is arranged between the valve element and the valve seat; when the valve element and the valve seat relatively move, the valve element and the valve seat are in air friction which is much less than sliding friction of a current structure, so that the problem that great noises are generated due to the fact that the valve element and the valve seat are in contact and relatively slide continuously at high speed at high frequency is solved, and therefore, reliability of the non-return valve is improved.

Description

technical field [0001] The invention relates to the field of air conditioning, in particular to a check valve and a compressor having the check valve. Background technique [0002] In the prior art, when the screw compressor is connected to the unit for operation, a check valve must be installed at the exhaust port to prevent backflow of the exhaust gas, and avoid burning out the motor due to reverse rotation of the male and female rotors caused by the backflow of the exhaust gas. Such as figure 1 As shown, the valve seat 20' and the valve core 30' in the check valve are sleeved together, and the two are in direct contact. Due to the large displacement and unstable air flow when the compressor is running, the valve core 30' and the valve seat 20' inside the check valve will constantly slide relative to each other at high speed and high frequency, resulting in great noise. That is to say, the noise generated by the check valve mainly comes from the constant high-speed and h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K15/02F16K17/04
CPCF16K15/023F16K15/025
Inventor 孟强军张天翼李日华杨侨明毕雨时彭延海许康马斌许云功
Owner GREE ELECTRIC APPLIANCES INC