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

A four-way switching valve provided with a direct-acting electromagnetic valve and it as a pilot valve

A technology of four-way switching valve and solenoid valve, which is applied to multi-way valves, valve devices, mechanical equipment, etc., can solve problems such as noise and achieve the effect of reducing noise

Active Publication Date: 2017-03-29
FUJIKOKI MFG CO LTD
View PDF7 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Then, at the time of switching, the opening areas of the two ports change rapidly, and the high-pressure refrigerant suddenly flows into the low-pressure side port (pipe), and a sudden pressure change occurs in the system 200, causing a loud noise ( switch sound) problem

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
  • A four-way switching valve provided with a direct-acting electromagnetic valve and it as a pilot valve
  • A four-way switching valve provided with a direct-acting electromagnetic valve and it as a pilot valve
  • A four-way switching valve provided with a direct-acting electromagnetic valve and it as a pilot valve

Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0059] figure 1 It is an overall configuration diagram showing a cooling operation (during defrosting operation) of a heat pump type cooling and heating system incorporating the first embodiment of the direct acting solenoid valve according to the present invention as a pilot valve. Sliding four-way switching valve, figure 2 yes means figure 1 A cross-sectional view with a partial plan view of the four-way valve body of the shown four-way switching valve during cooling operation (during defrosting operation), image 3 It is an overall structural diagram showing the heating operation of the heat pump cooling and heating system, which is assembled with figure 1 The sliding four-way switching valve shown, Figure 4 yes means figure 1 An enlarged cross-sectional view with a partial plan view of the direct-acting solenoid valve of the first embodiment as a pilot valve of the four-way switching valve shown during cooling operation (during defrosting operation).

[0060] In...

no. 2 approach

[0141] Figure 12A It is a side view showing the rotary four-way switching valve equipped with the second embodiment of the direct acting solenoid valve of the present invention as a pilot valve, Figure 12B It is an upper surface side arrangement diagram of the cooling position and an upper surface side arrangement diagram of the heating position of the rotary four-way switching valve provided with the second embodiment of the direct acting solenoid valve of the present invention as a pilot valve. Figure 13 It is an overall configuration diagram showing the cooling operation (defrosting operation) of the heat pump cooling and heating system incorporating the Figure 12A , Figure 12B The rotary four-way switching valve shown (shown is Figure 12B X-X profile of the refrigeration position). Figure 14 It is an overall structural diagram showing the heating operation of the heat pump cooling and heating system, which is assembled with Figure 12A , Figure 12B The rotary ...

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

While being able to reduce noise effectively, without requiring lowering frequency of a compressor greatly from heating operation at the time of a change to defrosting operation. According to the voltage appied by the electromagnetic coil of the direct-acting electromagnetic valve, the first piston and the second piston are located at the absorption position and the non-abosrption position, the first valve core is located at one end position communicated with the end and the other end position communicated with the port, the second valve core is located at the opening position of the opening port and the closing position of the closing port. When the defrosting turning to the warming turning and warming turning to the defrosting turning are performed, the second valve core is located at the opening position, and the pressure of the main valve chamber reduces the presetting voltage.

Description

technical field [0001] The present invention relates to a guide type four-way switching valve used for flow path switching in heat pump refrigeration and heating systems, etc., and in particular to a direct-acting solenoid valve capable of effectively reducing noise generated during switching between defrosting operations and before and after operations. , and a four-way switching valve equipped with it as a pilot valve. Background technique [0002] In general, heat pump cooling and heating systems such as indoor air conditioners and automotive air conditioners include compressors, outdoor heat exchangers, indoor heat exchangers, expansion valves, etc. through the switching valve. [0003] refer to Figure 23A , Figure 23B An example of a heat pump cooling and heating system equipped with such a four-way switching valve will be briefly described. The heat pump cooling and heating system 200 illustrated in the illustration is configured to switch between cooling operatio...

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): F16K11/00F25B47/02
CPCF16K11/00F25B47/025
Inventor 小岛正至木船仁志森田纪幸
Owner FUJIKOKI MFG CO LTD
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