Solar air source heat pump

Abstract

The invention belongs to the technical field of heat pumps, and particularly relates to a solar air source heat pump which comprises an evaporator, a compressor, a condenser, an expansion valve and a water storage tank, wherein a gas inlet of the evaporator is connected to one end of a first gas inlet tube, and the other end of the first gas inlet tube is communicated with a plurality of second gas inlet tubes; the second gas inlet tubes are symmetrically distributed along the center line of the first gas inlet tube, the ends, away from the first gas inlet tube, of the second gas inlet tubes are free ends, first temperature sensors and first electromagnetic valves are arranged at tube openings of the free ends of the second gas inlet tubes, and first controllers are arranged at the first air inlet tubes;. a fan is arranged at a gas outlet of the evaporator and is used for extracting gas from the first gas inlet tube so as to enable the gas to enter a gas inlet of the evaporator; According to the invention, the air with higher temperature is selectively extracted from a plurality of areas with different environment temperatures, so that the refrigerant in the evaporator can absorb more heat energy in unit time, and the energy obtaining efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of heat pumps, in particular to a solar air source heat pump. Background technique [0002] The use of solar energy is greatly affected by weather changes and is unstable. Traditional solar heating devices cannot use solar radiation at night, or when solar radiation is weak, due to the solar collectors in solar water heating devices Heat leakage, the temperature of hot water produced by the solar heating device cannot meet the needs of users. The air source heat pump uses the working principle of the heat pump to produce high-temperature hot water by using the low-grade heat energy in the air, which has the advantage of being able to be used all year round and not affected by solar radiation. However, the performance of traditional air source heat pumps is affected by the evaporation temperature, and the energy efficiency is low when the ambient temperature is low. [0003] An existing solar air source hea...

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Problems solved by technology

However, when the solar air source heat pump is installed in a narrow environment with limited space and poor air circulation, and the area where the sunshine time is short, the light intensity is low, and the ambient temperature is low all year round; such as the Daxinganling and Xiaoxinganling in Northeast my country The average annual temperature in the northern part of my country is below 0°C. In the northernmost Mohe region of China, the annual average temperature is below -4°C, and the total annual solar radiation received is very small; The utilization of air energy or the utilization of air energy is inefficient, it is difficult to meet the use, and the heating effect of the user cannot be achieved.

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