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Control elements and check valve assemblies

A technology of control components and check valves, which is applied in the direction of refrigeration components, refrigeration and liquefaction, refrigerators, etc., and can solve the problem of refrigerant flow through

Active Publication Date: 2017-11-03
ZHEJIANG DUNAN HETIAN METAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

One problem that exists in such a system with two expansion valves is how to get the refrigerant to flow through the part of the system where the uncontrolled expansion valve is located

Method used

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  • Control elements and check valve assemblies
  • Control elements and check valve assemblies
  • Control elements and check valve assemblies

Examples

Experimental program
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Effect test

Embodiment Construction

[0042] In advance, it should be understood that in this specification and claims, any use of the singular words "port", "hole", "fluid conduit", "fluid passage" or words of similar import shall be construed to include It is the possibility of multiple ports (holes, fluid conduits, fluid channels, etc.) having the same function as a single port (hole, fluid conduit, fluid channel, etc.) unless clearly and explicitly limited to the singular. Also, the use of directional terms, such as "left" and "right", "upper", "lower", "upper", "lower", "upward", "downward", and words of similar meaning should be used when discussing It should be understood within the framework of the reference numerals in the drawings and should not be construed as limiting the orientation when used or the protection scope of the claims. Also, it should be noted that, as used herein, the terms "throttle position" and "throttle positions" are contemplated to encompass valve positions in which the valve in que...

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PUM

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Abstract

The present invention relates to control elements and check valve assemblies. An arrangement includes a housing defining first and second ports. A first fluid channel provides communication between the ports; a second fluid channel provides communication with the first port. An element is disposed in the housing and positioned by the balance of forces, the element is positionable to a throttled position for controlling flow in a first direction through the first channel, and the element is positionable to an open position for Unrestricted flow in the second direction is permitted. A check valve is provided in the second fluid passage for preventing flow therefrom from the first port when the pressure in the first port is greater than the pressure in the second port, and when the pressure in the first port is less than the pressure in the second port The pressure in the fluid passage allows flow through the second fluid passage to the first port, thereby affecting the balance of forces acting on the element such that the element is forced to move towards the fully open position.

Description

technical field [0001] The present invention relates generally to valves for controlling fluid flow, and more particularly, to a fluid flow control assembly for controlling the flow of a fluid, such as refrigerant, in a first flow direction and substantially allowing the fluid to flow in Unrestricted flow in the second flow direction. Background technique [0002] Valves are widely used to control the flow of fluid from a source of pressurized fluid to a load device or from a load device to a low pressure reservoir. Typically, a pump, compressor, or other pressurized device is provided as a source of pressurized fluid, typically operative to draw low pressure fluid from a reservoir, mechanically act on the fluid to increase the fluid pressure, and expel the pressurized fluid. The flow of fluid discharged from the booster device is typically selectively controlled by a valve to control operation of the load device. [0003] One type of valve is a microvalve. A microvalve s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F25B41/06F25B49/02F25B41/20F25B41/31
Inventor G·K·格利P·阿鲁纳萨拉姆E·N·富勒
Owner ZHEJIANG DUNAN HETIAN METAL CO LTD