Cold and hot adaptive cold-hot water unit

Abstract

The invention discloses a cold and hot adaptive cold-hot water unit which comprises an evaporator, a gas-liquid separator, a screw compressor, a water cooling condenser, a reservoir, a dry filler, a system ball valve, a throttling gear, an adaptive system and a spraying system which are mutually communicated through pipelines. The adaptive system comprises air-cooled heat exchanger parts and a plurality of electric three-way regulating valves, the air-cooled heat exchanger parts are parallelly communicated in the pipelines through the electric three-way regulating valves, and operation state of the air-cooled exchanger parts is controlled through switching of opening and closing of the electric three-way regulating valves. The cold and hot adaptive cold-hot water unit is simple in system structure, operation modes can be selected freely through program control and in the case of hot and cold load imbalance, different needs of users on cold water and hot water can be met at any time, and the cold and hot adaptive cold-hot water unit is mainly applied to buildings needing temperature and humidity control or cold and hot water supply.

Description

technical field [0001] The invention relates to the technical field of air conditioning systems, in particular to a cold and hot water unit. Background technique [0002] With the improvement of people's requirements for the quality of living environment, each air-conditioned area of ​​the building needs to regulate the temperature and humidity of the environment through cold water and hot water. At the same time, in the transition season, the inconsistency of users' demand for cooling and heating will lead to the imbalance of cooling and heating loads, that is, in a certain period of time, there may be situations where the heating load is large and the cooling load is small, or the cooling load is large and the heating load is small. Compared with the conventional air-cooled heat pump unit which can only provide cold water or hot water alone, although the air-cooled heat pump unit with heat recovery can realize the simultaneous supply of cold water and hot water, there are ...

AI Technical Summary

Problems solved by technology

At the same time, in the transition season, the inconsistency of users' demand for cooling and heating will lead to the imbalance of cooling and heating loads, that is, in a certain period of time, there may be situations where the heating load is large and the cooling load is small, or the cooling load is large and the heating load is small

Compared with the conventional air-cooled heat pump unit which can only provide cold water or hot water alone, although the air-cooled heat pump unit with heat recovery can realize the simultaneous supply of cold water and hot water, there are certain limitations, that is, the heat for generating hot water comes from The superheated gas discharged from the compressor can only be obtained when the unit is in the cooling mode. The heat recovered is proportional to the cooling capacity of the unit, and when the unit is in the heating mode, it cannot provide chilled water at the same time

Therefore, the heat recovery type air-cooled heat pump unit cannot meet the unbalanced cooling and heating demand.

Although the current four-pipe heat pump unit can provide hot water in summer and cooling in winter, most of them use four-way reversing valves and several solenoid valves to switch functions, and the system structure is complicated.

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