Solar-powered heat pump unit capable of freely recovering excess heat

Abstract

The invention discloses a solar-powered heat pump unit capable of freely recovering excess heat, which relates to a two-stage heat recovering heat pump device taking atmospheric solar energy as an energy source. The solar-powered heat pump unit comprises an electric compressor, a first-stage heat recovery unit, a second-stage heat recovery unit, a four-way reversing valve, a condenser (serving asan evaporator in winter), an expansion valve, an evaporator (serving as a condenser in winter) and a fan arranged on the condenser (serving as an evaporator in winter). In the unit, two stages of heat recovery units are connected in series and then connected in series with the condenser, so that free recovery of condensation heat is realized on the premise of ensuring normal running of a refrigerating or heating working condition; supercooling heat is obtained during refrigeration, that is to say, excess heat consisting of total condensation heat and supercooling heat is obtained, so that therefrigerating and heating energy and efficiencies are further increased; and the two stages of heat recovery units can be used for preparing hot water of different temperatures, so that the requirements of different users are met and high practicability is achieved.

Description

technical field [0001] The invention relates to the field of air-conditioning heat pump heat recovery and the field of domestic water heat source. Further refers to the compressor, first-stage heat recovery device, second-stage heat recovery device, four-way reversing valve, condenser (evaporator in winter), expansion valve, evaporator (condenser in winter), condenser ( In winter, the evaporator is equipped with a fan connected to the unit, which supplies air-conditioning chilled water and domestic hot water (also can be used as a drinking water heat source) in summer, and supplies air-conditioning hot water and domestic hot water (also can be used as a drinking water heat source) in winter. Year-round air conditioning and high-efficiency energy-saving installations for domestic hot water supply. Background technique [0002] For places with hot-summer-warm-winter and hot-summer-cold-winter regions (such as hotels, hospitals, etc.) that require heating and cooling, the cold...

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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a more reasonable and scientific heat recovery heat pump unit to solve the problem of non-recovery or small recovery of condensation heat in the prior art, pollution of the ecological environment, low recovery efficiency, and low heat recovery. The hot water temperature provided by the device is not high enough, the reliability is poor, and the adjustment is not flexible, etc.

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