Inflation-type compound-channel evaporator for solar direct-expansion heat pump water heater

Abstract

The invention discloses an inflation-type compound-channel evaporator for a solar direct-expansion heat pump water heater. The inflation-type compound-channel evaporator comprises an upper pressing plate and a lower pressing plate which are in close fit with each other. A compound channel network is formed between the upper pressing plate and the lower pressing plate through inflation. Flowing refrigerant which is used for absorbing heat for evaporation is arranged in the compound channel network. The inflation-type compound-channel evaporator for the solar direct-expansion heat pump water heater has the advantages of simple structure, attractive appearance, high practicability, low cost and the like, and can enable the solar direct-expansion heat pump water heater to adapt to different climate and weather conditions.

Description

technical field [0001] The invention relates to the technical field of structural design of new heat exchangers, in particular to an inflation type composite channel evaporator for solar direct expansion heat pump water heaters. Background technique [0002] Solar direct expansion heat pump water heater is a combination of solar collector and heat pump water heater technology, and it is a high-efficiency energy-saving device with dual sources of solar energy and air energy. In a solar direct expansion heat pump water heater, the evaporator can not only absorb heat from the air, but also serve as a solar collector. In this way, on the one hand, the solar energy is fully utilized on the basis of the air source heat pump, which further improves energy efficiency, and alleviates the condensation and frosting problems of the air source heat pump evaporator, and on the other hand, avoids the operation of the solar heat pump from being limited by time and weather . [0003] The e...

AI Technical Summary

Problems solved by technology

However, these heat exchangers are either complex in structure and high in cost, or it is difficult to take into account the utilization of solar energy and air energy, and their performance is low.

[0004] The solar-air evaporator with the patent number 03210151.1 is composed of a solar collector plate, an air-conditioning fan, a vent with a wire mesh, and a housing with a mounting hole. The structure is relatively complicated, and the flow resistance of the refrigerant in the serpentine flow channel is large. , the heat transfer effect is poor

Patent No. 2008102334001 relates to a hemispherical evaporator, but due to its special shape, it is not easy to install and use

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