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

Refrigerant split control method and device for multi-connected system

A multi-connected system and control method technology, applied in the direction of refrigeration and liquefaction, refrigerators, compressors, etc., can solve the problems of affecting the cooling effect of the refrigeration internal machine, the reduction of exhaust superheat, and the liquid shock of the compressor, etc., to achieve safety and reliability Effects of operation, control of exhaust superheat, and prevention of liquid shock

Active Publication Date: 2017-10-31
GD MIDEA HEATING & VENTILATING EQUIP CO LTD +1
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the refrigerant flow into the refrigeration inner unit decreases due to improper opening of the electronic expansion valve, the cooling effect of the refrigeration inner unit will be affected; when the exhaust superheat degree is reduced due to the improper opening of the electronic expansion valve, Can cause compressor liquid slugging, causing damage to the compressor

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
  • Refrigerant split control method and device for multi-connected system
  • Refrigerant split control method and device for multi-connected system
  • Refrigerant split control method and device for multi-connected system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0019] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0020] figure 1 It is a flow chart of a refrigerant split control method for a multi-split system according to an embodiment of the present invention.

[0021] In the embodiment of the present invention, such as figure 2 As shown, the multi-line system includes a subcooling circuit composed of a first heat exchanger, a second heat exchanger, a first electronic expansion valve and a second electronic expansion valve, and a flow splitter.

[0022] Such as figure 1 As shown, the refrigerant split control method of the multi-line...

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 invention discloses a refrigerant split control method and device for a multi-connected system, wherein the method includes the following steps: when the multi-connected system enters the main heating mode, controlling the closing of the second electronic expansion valve; The opening of the electronic expansion valve is adjusted; when the opening of the electronic expansion valve corresponding to the refrigeration internal unit reaches the maximum opening, the second electronic expansion valve is calculated according to the total opening and the maximum opening of the electronic expansion valve corresponding to the refrigeration internal unit. a target opening; and controlling the second electronic expansion valve according to the target opening. The refrigerant split control method of the multi-connected system of the embodiment of the present invention can ensure the cooling effect of the refrigeration internal unit in the main heating mode, and at the same time prevent the compressor from liquid hammering and ensure the safe and reliable operation of the compressor.

Description

technical field [0001] The invention relates to the technical field of air conditioners, in particular to a method and device for controlling refrigerant split flow in a multi-connected system. Background technique [0002] When the two-pipe heat recovery multi-connected system operates in the main heating mode, part of the refrigerant recooled by the heat exchanger enters the low-pressure pipe of the outdoor unit through the electronic expansion valve and the heat exchanger, and the other part enters through another electronic expansion valve. After the cooling indoor unit absorbs heat, it finally enters the low-pressure pipe of the outdoor unit. [0003] The opening degree of the electronic expansion valve will affect the refrigerant flow rate entering the refrigeration inner unit and the degree of superheat of the exhaust gas. When the refrigerant flow into the refrigeration inner unit decreases due to improper opening of the electronic expansion valve, the cooling effec...

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): F25B41/06F25B49/00F25B41/34
CPCF25B13/00F25B2313/0231F25B2313/0233F25B2400/23F25B2600/2509F25B2600/2513F25B49/02F25B41/39F25B30/02
Inventor 罗彬李元阳
Owner GD MIDEA HEATING & VENTILATING EQUIP 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