Many people are no strangers to central air-conditioning. Generally, household users mainly choose small central air conditioners. In fact, home central air conditioners and central air conditioners work in the same way, except that home central air conditioners are a type of central air conditioner miniaturization. There is not much difference in function and use effect. Let's take a look at it!
First, the central air conditioning working principle - cold / hot water type unit
The outdoor unit cools (cools or heats) the cold (hot) medium water, and then the cooled (hot) water after cooling is sent by the water pump to the fan coil unit installed indoors, and the fan coil unit takes place in place. The method of returning air exchanges heat with indoor air to achieve the purpose of indoor air treatment.
The central air conditioner of the fixed frequency cold water machine or the variable frequency cold water machine is the reduction of the large central air conditioner. The condenser is changed from water cooling to air cooling, and the hot water is sent to the fan coil by the water pump. The introduction of fresh air, manhole, ceiling condensate discharge, noise index and multi-connection are the same, but the hot and cold water pipes are added; due to the large temperature difference, the sealing problem is prominent, and the water leakage has a great damage to the decoration. In addition, large central air-conditioning evaporators are regularly cleaned and pickled, and domestic hot and cold water machines have no good strategy for this. The efficiency of long-term use of cold heat exchangers will be greatly reduced. If combined with a central water treatment system, the above difficulties can be overcome.
Second, the central air conditioning working principle - fixed, frequency conversion
During heating, the outdoor unit absorbs the refrigerant vapor from the condenser and compresses it to deliver vapor refrigerant to each indoor unit. Each indoor unit is placed on the ceiling by means of installation. The air is sucked through the air return port, heat exchange is performed, and the air is sent back to the room by the local air return air from the air supply port.
During cooling, the outdoor unit absorbs the refrigerant vapor from the indoor unit and compresses and condenses it to deliver liquid refrigerant to each indoor unit. The unit is controlled by a microcomputer in the energy regulation mode, and the variable frequency compressor of the outdoor unit automatically adjusts the working state of the compressor according to the change of the indoor cold and heat load to meet the requirements of the indoor cold and heat load.
The relevant content of the central air-conditioning working principle in this article is introduced today. Now everyone understands it. I hope it will help everyone.
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