Accurate temperature control refrigeration system

Abstract

The invention discloses an accurate temperature control refrigeration system. The system comprises an internal regulation system and an external induction module. According to the precise temperaturecontrol refrigeration system, firstly, the external temperature is taken as a frequency conversion temperature, and an overall air conditioner can enter a low-frequency state only after the external temperature reaches a set range, the air conditioner cannot enter the low-frequency state in advance, and accurate temperature control of the air conditioner is achieved; secondly, during refrigeration, the exhaust temperature of a compressor can be effectively reduced, refrigeration efficiency is improved, time for adjustment of the change of the external temperature is shortened, time for coolingis shortened, the temperature is more stable, and the effect of accurate temperature control is achieved during refrigeration; finally, frost on an external heat exchanger can be melted during heating, an air conditioning system needs no reverse by a four-way valve during defrosting, heating efficiency of an air conditioning heat pump is greatly improved, and the air conditioning system performsheating during defrosting synchronously. Therefore, comfort of the air conditioning in heating is improved, and better use prospect is provided.

Description

technical field [0001] The invention relates to the field of air conditioning, in particular to a refrigeration system with precise temperature control. Background technique [0002] With the development of society, people's living standards continue to improve, the global warming effect is increasing and the ambient temperature is increasing, and the application area of ​​​​high-temperature refrigeration under the T3 working condition (ring temperature 52°C) is gradually expanding. People's requirements for air-conditioning temperature control systems It is also constantly improving, resulting in the disadvantages of movement in the existing air-conditioning temperature control system; [0003] Firstly, the operation of the conventional refrigeration system under the working condition of T3 will cause the exhaust temperature of the compressor to be too high, and even carbonization of the refrigerant oil will occur. At the same time, the refrigeration efficiency will drop sh...

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Problems solved by technology

[0002] With the development of society, people's living standards continue to improve, the global warming effect is increasing and the ambient temperature is increasing, and the application area of ​​​​high-temperature refrigeration under the T3 working condition (ring temperature 52°C) is gradually expanding. People's requirements for air-conditioning temperature control systems It is also constantly improving, resulting in the disadvantages of movement in the existing air-conditioning temperature control system;

[0003] Firstly, the operation of the conventional refrigeration system under the working condition of T3 will cause the exhaust temperature of the compressor to be too high, and even carbonization of the refrigerant oil will occur. At the same time, the refrigeration efficiency will drop sharply, and the service life of the compressor will be greatly shortened. When heating in low-temperature and high-humidity environment, the external heat exchanger is prone to frost, and the defrosting usually uses a four-way valve to change direction. The system changes from a heating cycle to a cooling cycle. At the same time, the internal fan stops working. Frequent shutdown and reversing in frost mode takes up a lot of heating time during the defrosting process, which greatly reduces the heating efficiency of the air conditioning system and makes the heating time longer, making it impossible for the entire air conditioning system to accurately maintain the temperature of the surrounding environment. Finally, the existing The temperature detection device of the temperature control system of the air conditioner usually detects the internal temperature of the air conditioner. The temperature inside the air conditioner is different from the temperature of the external environment. Often when the external temperature does not reach the set standard, the air conditioner will enter the temperature maintenance state through frequency conversion, and the temperature cannot be accurately controlled. People's use requirements, for this reason, we propose a precise temperature control refrigeration system

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