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Cab CO2 refrigerant variable-frequency air conditioner

A technology of inverter air conditioner and driver's cab, which is applied in refrigerators, compressors, refrigeration components, etc., can solve problems such as the decline of energy efficiency ratio, and achieve the effect of improving energy efficiency ratio and realizing active protection.

Pending Publication Date: 2020-07-14
CRRC DALIAN INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, CO 2 The energy efficiency ratio of the air conditioner will drop sharply at high temperature. In order to ensure that the air conditioner unit can cope with extreme weather, it is necessary to optimize its structure and improve the cycle mode to increase the CO 2 Performance of the air conditioning system

Method used

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  • Cab CO2 refrigerant variable-frequency air conditioner
  • Cab CO2 refrigerant variable-frequency air conditioner
  • Cab CO2 refrigerant variable-frequency air conditioner

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Embodiment Construction

[0024] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0025] Such as figure 1 shown, a cab CO 2 Refrigerant frequency conversion air conditioner, including a condensation chamber and an evaporation chamber. The condensation chamber includes a compressor 1, a gas cooler 2 and a condensation fan 7. The evaporation chamber includes an evaporator 5 and a first expansion valve 4. It also includes an econ...

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Abstract

The invention discloses a cab CO2 refrigerant variable-frequency air conditioner. The air conditioner comprises a condensation cavity and an evaporation cavity. The condensation cavity comprises a compressor, a gas cooler and a condenser fan. The evaporation cavity internally comprises an evaporator and a first expansion valve and further comprises an economizer and a heat regenerator. An air conditioning unit uses CO2 as a refrigerant which is an environment-friendly natural refrigerant. By means of the economizer and the heat regenerator, the refrigerant is cooled multiple times, and the energy efficiency ratio of the unit is improved. Active protection of a system is realized through the arrangement of a pressure relief valve, a temperature sensor and a pressure sensor.

Description

technical field [0001] The invention relates to the field of air conditioners for rail vehicles, in particular to a CO 2 Refrigerant inverter air conditioner. Background technique [0002] At present, domestic locomotive cab air conditioners are mainly based on HFC refrigerants. This type of refrigerant has no damage to the ozone layer, but the potential value of the greenhouse effect is still very high. With the increasing global warming, countries around the world have taken various measures to reduce It is urgent to protect the earth's environment due to greenhouse gas emissions. CO 2 As the most potential new refrigerant gradually come into people's field of vision, CO 2 There are many advantages: 1) Natural working medium, no damage to the environment, ODP = 0, GWP = 1; 2) Large cooling capacity per unit volume, equipment with the same cooling capacity, CO 2 Refrigerant air conditioners have less charge; 3) low viscosity, excellent fluidity and heat transfer, and lo...

Claims

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Application Information

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IPC IPC(8): F25B9/00F25B40/06F25B41/04F25B49/02F25B41/20
CPCF25B9/008F25B40/06F25B49/02F25B2309/06F25B2400/13F25B2600/2525F25B2700/1933F25B41/20
Inventor 程显耀陈广泰庞学博魏子琪多金鹏曾磊
Owner CRRC DALIAN INST CO LTD
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