Solar energy synergy heat pump system

Abstract

The invention relates to a solar energy synergy heat pump system, belongs to the technical field of heat pumps, and provides a solar energy synergy heat pump system which improves the utilization rateof solar energy and adaptability to outdoor temperature variation. According to the technical scheme, the solar energy synergy heat pump system comprises a solar energy collector, an evaporator, a low pressure compressor, a three-pipe heat exchanger, a low pressure throttle, a high pressure compressor, a condenser, a high pressure throttle, first to sixth switching valves, a heating end, a constant pressure water supply device and a circulating water pump. The system can be divided into a first-stage compression heat pump heating system, a two-stage compression heat pump heating system, a solar energy collector and first-stage compression heat pump combined heating system, and a solar energy collector and two-stage compression heat pump combined heating system according to an operation mode. The solar energy synergy heat pump system can be widely applied to the field of heating.

Description

technical field [0001] The invention relates to a solar energy efficiency heat pump system, which belongs to the technical field of heat pumps. Background technique [0002] Solar energy utilization technology is relatively mature now, and the use of solar energy for heating has also been widely used. When the solar energy is sufficient, the area of ​​the solar collector is sufficient, and the orientation of the building meets the requirements for thermal insulation, the independent heating of the solar heating system can meet the requirements of the user. Among them, the area of ​​the solar collector, the thermal insulation of the building orientation, etc. It has the characteristics of instability and intermittent, so it is difficult for the solar heating system to supply heat independently to meet the needs of users. [0003] After searching the literature of the prior art, it is found that the commonly used heating structure to solve the above problems is: a combined he...

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Problems solved by technology

[0004] However, among the above inventions, the invention with the publication number CN 106322833A, in the cascaded operation mode of the heating system of the solar collector and the heating system of the air source heat pump, the heat exchanger and the surface cooler are connected in parallel, due to the temperature difference between the two Larger, the problem of pressure imbalance between the heat exchanger and the surface cooler is prone to occur during operation; the utility model patent with the publication number CN 204648741U has a complex structure, which is not conducive to switching operation modes during actual operation, and the system includes two jets device and two compressors, the initial investment of the equipment is relatively large; the invention with the publication number CN 102778079B can only be driven at a high heat collection temperature of the solar injection system, and the high heat collection temperature reduces the heat collection efficiency, which is unfavorable to the utilization of solar energy

To sum up, the above-mentioned technical solution is not high enough for the utilization efficiency of solar energy, and there is still room for improvement. At the same time, the adaptability to large changes in outdoor temperature also needs to be improved.

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