Many people are familiar with central air-conditioning, even if they have not installed central air-conditioning, they must have used it, because most commercial houses and public houses basically use central air-conditioning for indoor temperature control, and some middle and high-end family users will also choose central air-conditioning, but family users mainly choose small central air-conditioning, which is what we often say. In fact, the working principle of domestic central air conditioning is the same as that of central air conditioning, except that domestic central air conditioning is a miniaturization of central air conditioning, and there is not much difference in function and use effect. The following Comfort 100 will introduce the working principles of three different types of central air conditioners in detail, so that everyone can understand the working principles of central air conditioners.

Working principle of central air conditioning-cold and hot water unit

The outdoor unit cools (or heats) the cold (hot) medium water, and then the cooled cold (hot) water is delivered to the indoor fan coil by the water pump, and the fan coil exchanges heat with the indoor air through local return air, thus achieving the purpose of indoor air treatment.

The central air conditioner of fixed frequency cold and hot water heater or variable frequency cold and hot water heater is the reduction of large central air conditioner. The condenser is changed from water cooling to air cooling, and the hot and cold water is pumped to the fan coil unit by the water pump. Fresh air introduction, manhole, ceiling condensate discharge, and noise indicators are the same as those of the multi-line system, but hot and cold water pipes are added; Due to the large temperature difference, the sealing problem is outstanding, and the water leakage has great damage to the decoration. In addition, large central air-conditioning evaporators are cleaned and pickled regularly, and domestic cold and hot water heaters have no good strategy for this, so the long-term use efficiency of cold and heat exchangers will be greatly reduced. If it can be combined with the central water treatment system, the above difficulties can be overcome.

Air conditioning is used in a single room, and hot and cold water pipes flow through fan coils in other rooms, which will also generate energy consumption. At present, it is more popular to close the waterway with electromagnetic water valve, which will not only make the local water flow too fast and produce noise.

Working principle of central air conditioning-constant frequency conversion, one-drag, multi-type

When heating, the outdoor unit absorbs refrigerant vapor from the condenser and delivers the vapor refrigerant to each indoor unit after compression. Each indoor unit is installed on the ceiling. Air is sucked in through its air return port, sent in after heat exchange, and then the treated air is sent back to the room through the air supply port in the form of local return air.

During refrigeration, the outdoor unit absorbs refrigerant vapor from the indoor unit, and delivers liquid refrigerant to each indoor unit after compression and condensation. The energy adjustment mode of the unit is controlled by microcomputer, and the inverter compressor of the outdoor unit automatically adjusts the working state of the compressor according to the change of indoor cold and heat load to meet the requirements of indoor cold and heat load.

One of them is 1 ~ 2 variable frequency compressor or 1 fixed frequency compressor, and there is radio frequency interference in the circuit, which has an impact on the computer. The fresh air introduced from manhole ceiling is the same as the condensed water in multi-line connection, and the requirements for fluorine pipe branches are reasonable. The upper and lower floors use 1 machine, which requires higher assembly line, and it is easy to have poor machine effect in the terminal when it is fully opened.

Constant frequency multi-connection: split air conditioning is concentrated in one outdoor unit, and a trailer has at most three compressors, and the refrigeration system is independent; Change the exposed indoor unit into the concealed indoor unit; It is difficult to introduce fresh air, which is a deformation of split air conditioning. The noise of the bedroom fan should be increased from low to high by 7 ~ 14 decibels, up to 50 decibels. Each bedroom should be equipped with a ceiling with a length greater than 1.2m, a width of 0.6m and a height of 0.3m, and a manhole should be provided. Each indoor unit needs a pipe to discharge condensed water.