Title:
CARBON DIOXIDE REFRIGERANT GAS PRESSURIZED CIRCULATION SYSTEM, CIRCULATION METHOD, AND COOLING AND HEATING AIR CONDITIONER
Document Type and Number:
WIPO Patent Application WO/2023/030544
Kind Code:
A1
Abstract:
Disclosed in the present invention are a carbon dioxide refrigerant gas pressurized circulation system, a circulation method, and a cooling and heating air conditioner. The system comprises: a carbon dioxide refrigerant pressurizer, used to pressurize a gaseous carbon dioxide refrigerant; an outdoor air energy heat exchanger, used for a liquid refrigerant to absorb heat from the air and convert into a medium-pressure and low-temperature gaseous refrigerant, or for refrigerant to convert into a high-pressure and normal-temperature refrigerant by releasing heat to the air; a refrigerant circulation tank, used to add carbon dioxide refrigerant to the system or receive excess carbon dioxide refrigerant from the system; an indoor heat exchanger, used to implement cooling of the refrigerant or heating of the refrigerant; a floor heating system, used to implement heating of a floor; and a floor cooling system, used to implement cooling of the floor. The present invention achieves primary enthalpy change of a refrigerant using air absorbing heat from or releasing heat to refrigerant, and in addition, uses a high-pressure circulation method to improve a mass flow of the refrigerant circulation, to achieve a quite high energy efficiency ratio during cooling and heating; moreover, the natural working medium carbon dioxide is used as a refrigerant, which is safe and environmentally friendly.
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Inventors:
YANG FAN (CN)
YU WEIRONG (CN)
YU WEIRONG (CN)
Application Number:
PCT/CN2022/117403
Publication Date:
March 09, 2023
Filing Date:
September 06, 2022
Export Citation:
Assignee:
SHANGHAI FULUDI FLUID TECH CO LTD (CN)
International Classes:
F25B9/00; F24F1/0063; F24F1/10; F24F1/16; F24F11/42; F24F11/64; F25B39/00; F25B41/20; F25B41/31; F25B47/00
Foreign References:
| CN114396667A | 2022-04-26 | |||
| CN105783327A | 2016-07-20 | |||
| CN101275790A | 2008-10-01 | |||
| CN212619437U | 2021-02-26 | |||
| CN212720080U | 2021-03-16 |
Attorney, Agent or Firm:
SHANGHAI BESTFAMEIP INTELLECTUAL PROPERTY ATTORNEYS (CN)
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