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

Flow path switching valve

A flow channel switching and valve casing technology, which is applied in the field of flow channel switching valves, can solve problems such as difficulties and achieve the effects of preventing creep deformation, reliable moving action, and preventing stress deformation

Active Publication Date: 2013-02-13
SAGINOMIYA SEISAKUSHO INC
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, it is difficult for the main valve chamber and the auxiliary valve chamber to achieve pressure equalization smoothly, and there is still room for improvement.

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
  • Flow path switching valve
  • Flow path switching valve
  • Flow path switching valve

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] Next, embodiments of the present invention will be described. figure 1 It is a figure which shows the channel switching valve, control valve, and refrigeration cycle of embodiment. The channel switching valve 10 of this embodiment is a four-way switching valve, and the channel switching valve 10 is connected to the control valve 20 by piping. In the channel switching valve 10 , the valve housing 1 has a cylindrical shape and is composed of a cylindrical portion 11 of a cylindrical shape and two cover portions 12 , 12 of a disc shape. The caps 12, 12 are mounted on the cylindrical portion 11 by welding to close the ends of the cylindrical portion 11 respectively. A thin circular concave portion 121 is formed on the cylindrical portion 11 side of the cover portion 12, 12.

[0023] Two pistons 2 , 2 arranged on an axis L1 of the valve housing 1 and connected to each other by a connecting member 3 are housed in the valve housing 1 . Thus, the inside of the valve case 1, ...

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

No PUM Login to View More

Abstract

The present invention relates to a channel switching valve. The flow path switching valve (10) of the present invention utilizes two pistons (2, 2) to divide the valve casing (1) into a main valve chamber (11A) and auxiliary valve chambers (12A, 12A) on both sides thereof, through The decompression of one auxiliary valve chamber (12A) utilizes the differential pressure with the refrigerant pressure in the main valve chamber (11A), so that the piston (2) and the main valve core (5) move to convert the refrigerant in the refrigeration cycle. The flow channel, after the piston (2) moves, enables the main valve chamber (11A) and the auxiliary valve chamber (12A) to quickly achieve pressure equalization, ensuring the durability of the piston (2). A pressure-equalizing channel is arranged in the center of the piston (2), and a secondary valve (25) is arranged in the pressure-equalizing channel. When the piston (2) moves to the cover part (12) side, the opening of the exhaust passage (12a) of the auxiliary valve seat part (122) is blocked by the auxiliary valve (25), and the pressure equalization passage is conducted.

Description

technical field [0001] The present invention relates to a channel switching valve used in refrigeration cycles of air conditioners and the like to switch refrigerant channels. Background technique [0002] Conventionally, in an air conditioner or the like, the cooling operation and the heating operation can be switched by switching the flow path of the refrigerant in the refrigeration cycle. In this refrigerating cycle, a compressor, two heat exchangers used as a condenser or an evaporator, and a channel switching valve for switching a channel of refrigerant flow between these compressors and the two heat exchangers are used. [0003] As such a channel switching valve, there is, for example, the technique disclosed in JP-A-2009-68695 (Patent Document 1). The channel switching valve accommodates a piston body in which two pistons and a main valve core are connected in a cylindrical valve case (valve body), and makes the main valve body slide in the axial direction relative t...

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
Patent Type & Authority Patents(China)
IPC IPC(8): F16K11/065F16K31/122
CPCF25B41/26
Inventor 村田雅弘
Owner SAGINOMIYA SEISAKUSHO INC
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com