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

Air supply control method for a two-stage compression air supply air conditioning system

A two-stage compression and air-conditioning system technology, applied in heating and ventilation control systems, heating and ventilation safety systems, refrigerators, etc., can solve the problem that the amount of supplementary air cannot be adjusted according to working conditions, and achieve the purpose of improving flexibility and reliability Effect

Active Publication Date: 2020-11-13
ZHUHAI GREE REFRIGERATION TECH CENT OF ENERGY SAVING & ENVIRONMENTAL PROTECTION
View PDF11 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide an air supply control method for a two-stage compression air supply air conditioning system to solve the technical problem in the prior art that the air supply volume of the flash tank air supply method cannot be adjusted according to the working conditions

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
  • Air supply control method for a two-stage compression air supply air conditioning system
  • Air supply control method for a two-stage compression air supply air conditioning system
  • Air supply control method for a two-stage compression air supply air conditioning system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] Such as figure 1 As shown, the present invention provides a high-temperature enthalpy injection refrigeration system (single cooler), including an evaporator 3, a condenser 4, a compressor 2, a flash tank 1, an electronic expansion valve EXV1 and an electronic expansion valve EXV2, as well as exhaust temperature sensor 6 and suction temperature sensor 5. Among them, the flash tank 1 is between the evaporator 3 and the condenser 4, and the electronic expansion valve EXV1 mainly controls the air supply volume, one end of which is connected to the outlet of the flash tank 1, and the other end is connected to the air supply port of the compressor 2; EXV2 mainly controls Exhaust temperature, one end of which is connected to the outlet of flash tank 1, and the other end is connected to the inlet pipe of evaporator 3.

[0051] When air supply control is required, the air supply electronic expansion valve EXV1 is controlled according to the target suction superheat (or target ...

Embodiment 2

[0055] The difference between embodiment 2 and embodiment 1 is that the four-way valve 7 and the third valve body (electronic expansion valve EXV3) are added.

[0056] Such as figure 2 As shown, the present invention provides a high-temperature enthalpy injection refrigeration system (heat pump machine), including an evaporator 3, a condenser 4, a compressor 2, a flash tank 1, a four-way valve 7, three electronic Expansion valves EXV1, EXV2 and EXV3, as well as discharge temperature sensor 6 and suction temperature sensor 5.

[0057] During refrigeration operation: the cooled refrigerant from the outlet of condenser 4 flows into flash tank 1 after passing through EXV3, and the steam from flash tank 1 flows into compressor 2 after passing through electronic expansion valve EXV1 to control the amount of supplementary air Air supply port; another subcooled refrigerant from the flash tank 1 flows into EXV2 for throttling, and after throttling, the saturated refrigerant flows int...

Embodiment 3

[0061] Such as image 3 As shown, the present invention provides a high-temperature enthalpy injection refrigeration system (single cooler) with refrigerant pipe cooling, and compared with Embodiment 1, a refrigerant pipe cooling device 8 is added.

[0062] The high-temperature enthalpy injection refrigeration system includes an evaporator 3, a condenser 4, a compressor 2, a flash tank 1, a refrigerant pipe cooling device 8, electronic expansion valves EXV1 and EXV2, and an exhaust temperature sensing package 6 and suction Air sensor temperature pack 5. Among them, the refrigerant pipe cooling device 8 is on the outlet pipe of the condenser 4, and the electronic expansion valve EXV1 is mainly used to control the air supply volume, one end of which is connected to the outlet of the flash tank 1, and the other end is connected to the air supply port of the compressor 2; EXV2 mainly controls the exhaust temperature, one end is connected to the outlet of flash tank 1, and the oth...

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 provides an air supply control method of a two-stage compression air supply air conditioning system, relates to the technical field of air conditioning, and solves the technical problem that the air supply volume of the existing flash tank air supply method cannot be adjusted according to working conditions. The air supply control method controls the opening degree of the first valve body by detecting the outdoor environment temperature, the suction temperature of the compressor, the temperature of the external pipe of the external unit and the temperature of the evaporation pipe of the internal unit, and calculating the degree of superheat of the suction air according to the temperature values. The opening and closing of the first valve body is determined according to the outdoor ambient temperature, and the opening of the first valve body is controlled according to the degree of suction superheat in the open state, thereby realizing the purpose of adjusting the amount of supplementary air according to the working conditions and avoiding overcompensation Compressor damage caused by air rehydration improves the flexibility and reliability of the compressor.

Description

technical field [0001] The invention relates to the technical field of air conditioning, in particular to an air supply control method of a two-stage compression air supply air conditioning system. Background technique [0002] The higher the outdoor ambient temperature, the greater the room cooling demand load. Ordinary air conditioners operate at high ambient temperatures, and the higher the temperature, the greater the capacity attenuation, which affects the comfort of users. It is usually solved by two-stage compression air supply and enthalpy injection, but the traditional flash tank air supply scheme adopts one-stage throttling and two-stage throttling schemes for air replenishment, the amount of air replenishment cannot be precisely controlled, and over-fill air is prone to occur Cause compressor rehydration and damage the compressor. Especially in some hot or cold areas with large indoor and outdoor temperature differences, it is urgent to study a new compressor ai...

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): F24F11/30F24F11/64F24F11/65F24F11/84F24F11/86F24F11/88F25B41/06F25B49/02F24F110/12F24F140/20F25B41/34
CPCF24F11/30F24F11/64F24F11/65F24F11/84F24F11/86F24F11/88F25B49/022F24F2110/12F24F2140/20F25B2500/28F25B41/31
Inventor 熊建国汪俊勇余凯胡知耀李志强
Owner ZHUHAI GREE REFRIGERATION TECH CENT OF ENERGY SAVING & ENVIRONMENTAL PROTECTION
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