Title:
CO2 REFRIGERANT VARIABLE-FREQUENCY AIR CONDITIONER FOR DRIVER CAB
Document Type and Number:
WIPO Patent Application WO/2021/218147
Kind Code:
A1
Abstract:
A CO2 refrigerant variable frequency air conditioner for a driver cab. The air conditioner comprises a condensation cavity and an evaporation cavity, wherein the condensation cavity comprises a compressor (1), a gas cooler (2) and a condensation fan (7) therein, and the evaporation cavity comprises an evaporator (5) and a first expansion valve (4) therein. The air conditioner further comprises an economizer (17) and a heat regenerator (3). An air conditioning unit uses CO2 as a refrigerant, and the refrigerant is cooled multiple times by means of the economizer (17) and the heat regenerator (3), thereby improving the energy efficiency ratio of the unit, and active protection of the system is achieved by means of the arrangement of a pressure relief valve (9), temperature sensors (10, 14) and pressure sensors (8, 13).
Inventors:
CHENG XIANYAO (CN)
CHEN GUANGTAI (CN)
PANG XUEBO (CN)
WEI ZIQI (CN)
DUO JINPENG (CN)
ZENG LEI (CN)
CHEN GUANGTAI (CN)
PANG XUEBO (CN)
WEI ZIQI (CN)
DUO JINPENG (CN)
ZENG LEI (CN)
Application Number:
PCT/CN2020/132791
Publication Date:
November 04, 2021
Filing Date:
November 30, 2020
Export Citation:
Assignee:
CRRC DALIAN INST CO LTD (CN)
International Classes:
F25B9/00; B60H1/32; F25B40/00; F25B41/20
Foreign References:
| CN111412677A | 2020-07-14 | |||
| CN212299529U | 2021-01-05 | |||
| CN205843115U | 2016-12-28 | |||
| CN209230061U | 2019-08-09 | |||
| CN203857718U | 2014-10-01 | |||
| CN201885295U | 2011-06-29 | |||
| CN207156890U | 2018-03-30 | |||
| CN109357403A | 2019-02-19 | |||
| CN109323476A | 2019-02-12 | |||
| KR20180138487A | 2018-12-31 |
Attorney, Agent or Firm:
DALIAN ZHICHENG PATENT AGENCY (CN)
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