Heat recovery heat pump air conditioner water chilling unit

Abstract

The invention relates to a heat recovery heat pump air conditioner water chilling unit, which comprises a compressor, a four-way reversing valve, two outdoor heat interchangers, an indoor heat interchanger, a throttle valve, a refrigerant pipe and a heat recovery heat interchanger. The heat recovery heat pump air conditioner water chilling unit is added with the heat recovery heat interchanger, which can guarantee the recovery of the heat of condensation while realizing good refrigeration and heating. The parallel connection mode of the heat recovery heat interchanger and the two outdoor heat interchangers is adopted for controlling the flow distribution of a freezing medium and the recovery volume of the heat of condensation and convenient for precisely regulating and controlling the heat recovery volume in the heat recovery mode. Compared with a common series connection heat recovery machine unit, the water chilling unit needs few freezing medium and uses the heat of condensation, thus obtaining higher heat recovery efficiency; compared with a common parallel connection heat recovery machine unit, the water chilling unit has more multiple-stage regulation and does not influence the refrigeration effect and stably runs. The heat recovery heat pump air conditioner water chilling unit is mainly suitable for various large, middle and small size centre air-conditioner systems.

Description

technical field [0001] The invention relates to the technical field of air conditioning heat recovery, in particular to a heat recovery heat pump air conditioning chiller. Background technique [0002] The electric load consumed by the existing air-conditioning heat pump chiller accounts for more than 30% of the electric load of the whole building (as star hotels, hotels, office buildings, etc.). During the operation of the air-conditioning heat pump chiller, only the cooling capacity is used, and the condensation heat is generally discharged in the surrounding environment. The condensation heat removed is about 1.1 to 1.3 times the cooling capacity of the unit, resulting in a great waste of energy and making the The increase in ambient temperature has seriously aggravated the heat pollution in the city. In addition, even in summer, many buildings need hot water. Usually, solar water heaters or boilers are used to heat hot water. However, using boilers is not conducive to e...

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a heat recovery heat pump air-conditioning chiller with a more reasonable structural layout to solve the problem of less heat recovery, low recovery efficiency, inflexible adjustment, large refrigerant charge and poor reliability in the prior art The problem

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