The working principle of industrial dehumidifier and daily maintenance precautions


Working principle of dehumidifier:

1. Internal circulation of dehumidifier:

Through the operation of the compressor → discharge the high-temperature and high-pressure gas at the exhaust port → enter the condenser to cool → become a low-temperature and high-pressure gas → intercept through a capillary tube → become a low-temperature and low-pressure liquid → evaporate heat through the evaporator → return to the compressor Low temperature and low pressure gas. This cycle goes back and forth.

2. The external circulation of the dehumidifier:

Under the condition of normal start-up → operation by the fan → humid air is sucked in from the air inlet → passes through the evaporator → the evaporator absorbs the moisture in the air on the aluminum sheet → becomes dry air → dissipates heat through the condenser → from the outlet The tuyere blows out.

Only by understanding the precautions and working principles can the daily maintenance and maintenance work of the dehumidifier be better done in the long-term use of the dehumidifier in the future.

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Dehumidifier is a seasonal product

The dehumidifier is a seasonal product. If it is used properly every day, it can not only exert the maximum effect of the dehumidifier, but also reduce the incidence of failures and extend its service life. The following are some methods for accurate use, maintenance and maintenance of the dehumidifier.

1. Let the professional staff check the dehumidifier on schedule: After long-term use of the dehumidifier, the electrical circuits and control elements in the unit will have different degrees of aging, which will cause serious damage to the unit and the human body. The circuit is checked, the aging components are replaced, and the refrigerant is added, which can prevent the aging of the components from harming the machine and the human body, and can keep the dehumidifier in good working condition.

2. If the dehumidifier is not used for a long time, protective measures should be taken: when the dehumidifier is not used for a long time in winter or when going out, the dehumidifier should be covered with a protective cover to prevent it from sun and rain, and dust deposition, causing future cleaning and maintenance problems

3. Accurately adjust the set humidity of the dehumidifier: When the user adjusts the set humidity of the dehumidifier, the humidity should be set according to their own feelings of humidity, the number of people in the space, and the size of the space. Normally, in a state of low flow such as rest and sleep, the relative humidity of the room is around 60% RH, and the human body will feel more tranquil. The humidity setting is too low, in addition to making people feel dry, because the difference between indoor and outdoor humidity is large, and the moisture expansion is faster, resulting in frequent compressor startup and shutdown, shortening the service life of the dehumidifier, and also consuming more More energy.

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4. Clean the dehumidifier on schedule: Remove the filter of the dehumidifier for cleaning regularly, which can effectively improve the dedusting effect of the dehumidifier and improve the ambient air quality. Regularly cleaning the heat sink of the outdoor unit can effectively improve its heat transfer coefficient and heat exchange efficiency, and improve the working efficiency of the dehumidifier.

Use of the dehumidifier: if the dehumidifier is moved for a long distance or violently, it should be left to stand for 2-3 hours before connecting to the power supply to avoid damage to the compressor. Close the doors and windows before operation to avoid the entrance of damp external air The dehumidification effect is affected indoors. If there is no need during use, try to reduce the number of doors and windows.

Arrangement of the dehumidifier: Place the dehumidifier in a place with air circulation, to avoid being placed in a dead corner, causing poor ventilation and insufficient dehumidification effect.

Maintenance of the dehumidifier: clean the filter at least once every two weeks. Never store the dehumidifier on its side or upside down to avoid damage to the compressor during storage.

The condenser should be cleaned frequently and kept clean. The dehumidifier should be placed in the center of the room. There should be no obstructions at the air inlet and outlet of the dehumidifier, and the air filter should be cleaned. When the ambient temperature is lower than 15 ℃, the water droplets attached to the surface of the evaporator will freeze and weaken the effect of the dehumidifier. If the ambient temperature exceeds 40 ℃, the pressure in the system will increase and overload the compressor. At this time, the overload protector The circuit should be cut off, otherwise the compressor motor will be damaged. Therefore, the best use temperature range of the dehumidifier is 5 ℃ ~ 38 ℃, microcomputer controlled dehumidifier has an automatic defrosting function, the use temperature range can be 5 ℃ ~ 40 ℃. If the humidity in the air is less than 30%, it is too dry and uncomfortable, so the reliable humidity controller can be controlled to maintain the range of 50% to 60%. The doors and windows should be closed as much as possible during use, so as to achieve the dehumidification effect in the room. The body should be placed flat, not tilted or laid down, to avoid machine malfunction or abnormal noise. The water storage in the dehumidifier is too full. In order to avoid overflowing and contaminating the ground, you must unplug the power cord before dumping the water in the water storage tank when the machine body must be moved during operation.

China Hardware Business Network

After the dehumidifier is moved, it will be swayed for four to six hours in advance, and then turned on. Because the compressor pipeline in the dehumidifier contains cold coal, the cold coal must return to its original position after four to six hours after being moved. Clean the air filter regularly (about once every two weeks) to maintain the dehumidification, dust removal efficiency and life of the machine. Clean the air filter and wash it with clean water below 40 ℃; it is better to clean it with a detergent. After washing off the dust, rinse it with water, dry it in the shade and put it back in the body. When cleaning the body, wipe gently with a damp cloth; avoid direct water splashing to avoid damage to the electrical insulation. There are stickies on the surface of the body, which can be cleaned with soapy water. Avoid spraying with gasoline, petroleum spirits, solvents, or spray insecticides to avoid peeling paint or discoloration. Do not use thin rods or wires to dig inside the machine to avoid malfunction or danger. Unplug the power cord to maintain the life of the machine when there is a power outage or long-term unused travel

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17888217031 Mr. Guan 'Working principle of industrial dehumidifier and daily maintenance precautions

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