The basic structure of each type of household air conditioning is introduced:

1. Cold-air window air conditioner

Window air conditioner is mainly composed of refrigeration circulatory system, air circulation system, control and electrical protection system of the three parts.

The composition and role of the system is briefly described as follows:

In the heating state, when the outdoor heat exchanger temperature below -30 ℃ on the defrost switch closure, so that the relay coil to form a circuit, the contact is not comfortable, indoor and outdoor fan circuit and electromagnetic reversing valve coil at the same time, the system will be converted to a refrigeration cycle, relying on the condensation of exothermic frost, to be the temperature rises to more than 10 ℃. When the temperature rises above 10℃, the defrost switch is disconnected and the electromagnetic sewing appliance is de-energized. The indoor and outdoor fan circuits and the electromagnetic reversing valve coil are re-energized to resume the heating cycle.

2. Split-type air conditioner

Split-type air conditioner consists of indoor unit, outdoor unit, and connecting indoor and outdoor units of the pipeline, pipe joints three parts. Indoor units have evaporator (or indoor heat exchanger), capillary tube, temperature controller, centrifugal fan and connecting piping and other components. Outdoor unit has a compressor, axial fan, condenser and external connection piping and other components.

The advantages of split air conditioners are:

①The compressor and condenser are in the outdoor unit, which can be installed farther away from the room to improve the environment, and the noise is smaller than that of window air conditioners.

②Installation and maintenance is convenient, easy to repair small, large repair can be dismantled indoor and outdoor units.

3 ③ indoor units are generally ultra-thin, beautiful, easy to arrange, can be coordinated with the interior decoration.

④Outdoor unit increased condenser area and air volume, heat dissipation conditions than the window air-conditioning is good, good refrigeration effect.

Split air conditioner structure, split air conditioner despite the shape and structure of the different, but their refrigeration systems and indoor and outdoor unit connection is basically the same.

3. Inverter air conditioner

The air conditioner with a compressor driven by a variable frequency power supply is called an inverter air conditioner. The purpose of frequency conversion is to improve the characteristics of the compressor motor, so as to meet the operating requirements of the air conditioner in different conditions, so that it reaches the most reasonable working condition.

Fixed-frequency air conditioner compressor shutdown interval to ensure that 3min, which is determined by the motor starting characteristics, that is, the pressure must be maintained after the basic balance to start again, that is, the minimum load starting, otherwise it may cause starting failure caused by overcurrent protection. Nevertheless, the starting current is about six times the rated current. Although this time is very short, but the impact on the power supply is larger, especially in the power line loss of large places.