Electric control box cooling structure of heat pump drying unit and heat pump drying unit

Abstract

The invention discloses an electric cabinet cooling structure of a heat pump drying unit. The heat pump drying unit comprises an evaporator. The evaporator is used for cooling and dehumidification onthe return air of the unit, so that the area, on the downstream part of the evaporator, in the circulation direction of air flow is the dry and low-temperature area. The electric cabinet cooling structure comprises a first air channel. The first end of the first air channel communicates with the dry and low-temperature area. The second end of the first air channel communicates with the interior ofan electric cabinet. According to the electric cabinet cooling structure, the dry and cold air in the dry and low-temperature area can be conveniently introduced into the electric cabinet so that cooling on the electric cabinet can be realized, and the operational failure, caused by too high temperature in an electric cabinet, of components can be avoided while it is not needed to arrange the electric cabinet in the dry and low-temperature area. The invention further discloses the heat pump drying unit.

Description

technical field [0001] The invention relates to the technical field of heat pump drying devices, in particular to an electric control box cooling structure of a heat pump drying unit and the heat pump drying unit. Background technique [0002] The heat pump drying device with closed circulating air duct can make full use of heat, so it has been widely recognized. However, in the prior art, the layout of the electric control box of the integral heat pump drying unit is a problem that is easily overlooked but also easily causes hidden dangers. In the integral heat pump drying unit, because the circulating airflow passes through the evaporator and the condenser in sequence, the temperature and humidity change, so there are generally dry high-temperature areas (such as the area after the condenser outlet) and high-humidity areas ( Such as the area before the evaporator inlet). It is not suitable to place the electric control box of the unit in the high-temperature area or the ...

AI Technical Summary

Problems solved by technology

It is not suitable to place the electric control box of the unit in the high-temperature area or the high-humidity area, because the dry high-temperature area is not conducive to the heat dissipation of the electric control box, and it is easy to cause static electricity, while the high-humidity area is likely to cause internal components of the electric control box. Device moisture, short circuit, and even corrosion

From the perspective of cooling and safety of the electric control box, the ideal place to place the electric control box should be a dry and cold area (that is, a dry low-temperature area), that is, between the evaporator outlet and the condenser inlet, but due to the structural layout of the unit It is very inconvenient to place the electric control box in this ideal area. In addition, from the perspective of heat exchange, placing the electric control box in this area will also adversely affect the heat exchange efficiency

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