Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Pressure control valve

A pressure control and spool technology, applied in the field of pressure control valves, can solve the problems of compressor shutdown, cooling capacity reduction, compressor capacity reduction, etc., and achieve the effect of good reliability and shock avoidance

Active Publication Date: 2009-09-30
ZHEJIANG SANHUA AUTOMOTIVE COMPONENTS
View PDF1 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the one hand, in a supercritical carbon dioxide refrigeration system, the pressure characteristics of the high-pressure side have a great influence on the refrigeration efficiency of the system; on the other hand, the pressure on the high-pressure side can reach 70-150bar, which is 7-10 times that of common refrigeration devices. The increase in pressure will reduce the capacity of the compressor, which will reduce the cooling capacity, further increase the pressure to an abnormal level, and even cause the compressor to stop.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Pressure control valve
  • Pressure control valve
  • Pressure control valve

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] This embodiment combines Figure 2 ~ Figure 4 A specific embodiment of the pressure control valve will be described.

[0057] figure 2 It is a schematic diagram of the structure of the pressure control valve described in Embodiment 1. Such as figure 2 As shown, the pressure control valve includes: a valve body 1; a low-pressure chamber 61, an inner cavity 11 of the valve body 1, and a high-pressure chamber 51 arranged in sequence; end, the inner chamber 11 is located between them, and a throttling passage 7 is provided between the inner chamber 11 and the high-pressure chamber 51, and the throttling passage 7 has a valve port 71 facing the inner chamber 11; the high-pressure chamber 51 The high pressure port 5 is connected to the outlet side of the cooler 20 through the heat exchanger 30, while the low pressure port 6 of the low pressure chamber 61 is connected to the inlet side of the evaporator 50;

[0058] Between the low-pressure chamber 61 and the inner cavit...

Embodiment 2

[0070] The following is attached Figure 5 and Figure 6 A preferred embodiment of the present invention is disclosed. Figure 5 is a structural schematic diagram of the pressure control valve described in this embodiment, Figure 6 yes Figure 5 Side view along direction A.

[0071] Such as Figure 5 As shown, similar to Embodiment 1, the pressure control valve described in this embodiment includes: a valve body 1; a low-pressure chamber 61, an inner chamber 11 of the valve body 1 and a high-pressure chamber 51 arranged in sequence, and the inner chamber 11 and The low-pressure chamber 61 is communicated with the passage 41, and the inner chamber 11 communicates with the high-pressure chamber 51 through the throttling passage 7; The valve port 71 toward the inner chamber 11 moves back and forth, so that the valve port 71 is opened or closed, and the degree of opening and closing of the valve core changes with the pressure of the high-pressure chamber 51; it also includes...

Embodiment 3

[0078] This embodiment combines the attached Figure 7 Another embodiment of the pressure control valve according to the present invention is disclosed.

[0079] Figure 7 is a structural schematic diagram of the pressure control valve described in this embodiment, such as Figure 7 As shown, the difference from the pressure control valves in the aforementioned Embodiment 1 and Embodiment 2 is that in this embodiment, the axes of the high-pressure chamber 51 and the low-pressure chamber 61 are perpendicular to each other, and the axis of the normally open throttling passage 8" It intersects with the axis of the spool 2 and the included angle is R. The other structures are similar to those in Embodiment 1 and will not be repeated here.

[0080] Under normal conditions, the refrigerant pressure F1 in the inner cavity 11 of the valve core 2 and the thrust F2 of the spring 3 close the throttling passage 7, and the refrigerant pressure in the high-pressure chamber 51" exerts a fo...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
The inside diameter ofaaaaaaaaaa
Login to View More

Abstract

The invention discloses a pressure control valve, which comprises a valve body, a low-pressure cavity, an inner cavity of the valve, a high-pressure cavity, a throttling passage and a valve element, wherein the low-pressure cavity, the inner cavity of the valve and the high-pressure cavity are arranged sequentially, and the inner cavity is communicated with the low-pressure cavity; the throttling passage is arranged between the inner cavity and the high-pressure cavity and has a valve opening facing the inner cavity; the valve element is arranged in the inner cavity, an end face, facing the throttling passage, of the valve element is provided with a sealing part corresponding to the throttling passage, the sealing part is matched with the valve opening and the valve element can reciprocally move relative to the valve opening, facing the inner cavity, of the throttling passage to open and close the throttling passage; and a normally open throttling passage is arranged between the inner cavity and the high-pressure cavity. In a supercritical carbon dioxide circulating system, the pressure control valve can be used to directly control the pressure of a cooling agent on a high pressure side by controlling the pressure difference between the high pressure side and a lower pressure side.

Description

technical field [0001] The invention relates to the technical field of refrigeration, in particular to a pressure control valve. Background technique [0002] At present, human beings are facing more and more serious environmental problems, among which the destruction of the ozone layer and the greenhouse effect are increasingly concerned by the whole world. The chlorofluorocarbon (commonly known as Freon) refrigerant (refrigerant) used in the traditional refrigeration cycle system is a synthetic compound, which is not easy to be decomposed when it volatilizes into the atmosphere, but it can decompose ozone molecules and cause serious damage to the ozone layer. Alternative hydrofluorocarbon refrigerants do not destroy the ozone layer, but their greenhouse effect is obvious. In the future, although human beings can work hard to synthesize better refrigerants, in the long run, substances that do not exist on the earth will be produced and used in large quantities. The ecolog...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): F16K17/30F16K1/38F25B41/00
Inventor 尹斌祝颖安
Owner ZHEJIANG SANHUA AUTOMOTIVE COMPONENTS
Features
  • Generate Ideas
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com