Household air source double-plate heat recovery fresh air unit

Abstract

The invention relates to a household air source double-plate heat recovery fresh air unit. The household air source double-plate heat recovery fresh air unit comprises a dehumidification unit and a heat recovery unit; the dehumidification unit is provided with an indoor unit and an outdoor unit; the indoor unit comprises a first shell, a first air opening and a second air opening are formed in thetop wall of the first shell, and an evaporator is arranged in the first shell; the outdoor unit comprises a second shell, a compressor, an air-cooled condenser and an expansion device are arranged inthe second shell, and the compressor, the air-cooled condenser, the expansion device and the evaporator form a hot pump system; and the heat recovery unit comprises a third shell, a third air openingand a fourth air opening are formed in the bottom wall of the third shell, the top wall of the third shell is provided with an air return opening, an air supply opening, a fresh air opening and an air outlet, a first plate type heat exchanger and a second plate type heat exchanger are arranged in the third shell, and the first plate type heat exchanger and the second plate type heat exchanger areobliquely arranged. The household air source double-plate heat recovery fresh air unit has the advantages of being simple in structure, convenient to assemble and disassemble, reliable in performanceand remarkable in energy conservation; and by recycling return air energy in different stages, the overall energy efficiency ratio of the unit is effectively improved.

Description

technical field [0001] The invention relates to an air conditioner, in particular to a split air source heat recovery fresh air unit. Background technique [0002] With the development of economy and society, people's requirements for living environment are getting higher and higher, which promotes the rapid development of building energy saving and air conditioning equipment, and various types of fresh air units have appeared. The traditional fresh air unit mainly adopts the heat pump method. In summer, the refrigerant releases heat at the condenser on the one hand, and discharges the heat through water cooling or air cooling; The purpose of refrigeration and dehumidification, and reheat the fresh air through the reheater installed on the rear side of the evaporator, in case the fresh air temperature is too low to affect the indoor air quality. In winter, the four-way reversing valve is used to switch the flow direction of the refrigerant, so that the heat exchange process...

AI Technical Summary

Problems solved by technology

The traditional fresh air unit mainly has the following problems in practical application: the return air energy is not effectively utilized, resulting in high energy consumption of the unit and low overall energy efficiency; single function and poor environmental adaptability affect the utilization rate of the unit

Although this integrated fresh air unit can achieve a certain heat recovery function, its structure is relatively complex and its volume is large, which increases the difficulty of the unit manufacturing process; especially its air duct is difficult to design due to space constraints, and there are often many Steering at a large angle leads to large wind resistance and affects the balance of fresh air and return air, and its heat recovery efficiency and energy-saving effect are not ideal

At the same time, this integrated fresh air unit is difficult to transport and disassemble, which is not conducive to later inspection and maintenance.

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