Ultra-high temperature air conditioner cooling cycle system

An air-conditioning refrigeration and circulation system technology, applied in refrigerators, refrigeration and liquefaction, lighting and heating equipment, etc., can solve problems such as condensation temperature approaching or reaching the critical point, technical level cannot meet work requirements, and incomplete condensation, etc., to achieve Meet the man-machine environmental requirements of special environments, good working performance and economic performance, and improve the effect of safety and reliability

CN101476793AInactive Publication Date: 2009-07-08HEFEI UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2009-07-08
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a refrigeration cycle system for ultrahigh-temperature air conditioners, which adopts a mixed working medium consisting of high-temperature refrigerant and intermediate-temperate refrigerant. The system is characterized in that a compressor, a condenser, a front-end gas-liquid separator, an expansion valve positioned at the liquid-phase outlet end of the front-end gas-liquid separator, an evaporator and a back-end gas-liquid separator are sequentially arranged in a main loop where the compressor is according to the flow direction of the refrigerant; the system is provided with an overlapping loop consisting of an evaporative condenser; an inlet of a condensing branch of the evaporative condenser is communicated with a gas-phase outlet of the front-end gas-liquid separator; an outlet of the condensing branch is connected with an inlet of the expansion valve; an inlet of an evaporation branch of the evaporative condenser is connected with a liquid-phase outlet of the front-end gas-liquid separator through a throttle control valve; an outlet of the evaporative condenser and an outlet of the evaporator are jointly connected to the back-end gas-liquid separator; and an outlet of the back-end gas-liquid separator is communicated with an inlet of the compressor. The system has the advantages that the system adopts the common air-conditioning compressor, can realize large temperature-difference refrigeration in a high-temperature environment, and has good working performance and economic performance in a wide temperature range.
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Description

technical field

[0001] The invention relates to the technical field of air conditioners, in particular to an air conditioner that operates in a high-temperature environment and has a wide operating temperature range for adjusting temperature and humidity. Background technique

[0002] At present, the refrigeration cycle system of the air conditioner used in high temperature environment (special high temperature occasions such as iron and steel smelting workshop) is usually as follows: figure 1 As shown, it is composed of a compressor 1, a condenser assembly 2, a dry filter 3, a throttle valve 4, an evaporator assembly 5 and a gas-liquid separator 6, and a medium-temperature refrigerant or a high-temperature refrigerant is used in the system.

[0003] When the ambient temperature is as high as 75°C±5°C, the refrigeration cycle system using a single medium-temperature refrigerant, the exhaust pressure and temperature are too high, the condensation temperature is close to or re...

Examples

Embodiment Construction

[0028] In this embodiment, the ultra-high temperature air-conditioning refrigeration system uses a mixed working medium composed of high-temperature refrigerant and medium-temperature refrigerant, and the structure of the circulation system is set as follows:

[0029] In the main circuit where the compressor 1 is located, the compressor 1, the condenser 2 on the outlet side of the compressor, the gas-liquid separator 3 on the outlet side of the condenser, and the gas-liquid separator 3 on the front end are arranged in sequence according to the refrigerant flow direction. An expansion valve 6, an evaporator 7 and a back-end gas-liquid separator 8 at the outlet of the liquid phase;

[0030] An inner cascade loop composed of evaporative condenser 5 is provided, wherein the inlet of the condensation branch of the evaporative condenser 5 communicates with the gas phase outlet of the front-end gas-liquid separator 3, and the outlet of the condensation branch is connected to the inlet...