Dehumidifier

Abstract

The invention discloses a dehumidifier. The dehumidifier comprises a fan, an evaporator, a compressor and a four-way reversing valve, and is characterized in that the dehumidifier is further provided with a temperature and humidity sensor and a controller; the compressor is connected with a cooled heat exchanger through the four-way reversing valve; the cooled heat exchanger is connected with an electronic expansion valve connected with the evaporator; the fan, the evaporator, the compressor, the four-way reversing valve, the temperature and humidity sensor, the cooled heat exchanger and the electronic expansion valve are connected with the controller. The dehumidifier has the beneficial effects that the flow of the electronic expansion valve is automatically adjusted according to different temperature and humidity, so that the dehumidifier achieves the optimal dehumidification effect, and the dehumidifier can also normally work in a high temperature environment by adjusting the flow of the electronic expansion valve.

Description

technical field [0001] The invention relates to the technical field of heating, ventilating and air-conditioning manufacturing, in particular to a dehumidifier. Background technique [0002] With the rapid development of science and technology, dehumidifiers are used more and more widely. A dehumidifier removes moisture from the air, thereby reducing air humidity. Usually, the working principle of dehumidifier is to use compressor to compress refrigerant gas. The compressed high-temperature and high-pressure gas is condensed into liquid through cold and heat exchanger. When liquid refrigerant passes through evaporator, it absorbs heat from liquid and evaporates into gas. It will absorb a lot of heat from the air, resulting in a decrease in air humidity. When the temperature is lower than the dew point, the moisture in the air will be condensed, so as to achieve the purpose of air dehumidification. [0003] However, as far as the current dehumidifier technology is concerned...

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Problems solved by technology

[0003] However, as far as the current dehumidifier technology is concerned, there are certain restrictions on the working temperature range of the dehumidifier, generally within the range of 5°C~35°C, and within this range due to the limitation of the capillary in the heat exchanger, its The dehumidification capacity and energy efficiency ratio are not high, which has obvious limitations on the dehumidification effect

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