Electric four-way change valve

Abstract

This invention discloses a kind of electric four-way change valve used in air-condition air flow reversing. The valve is consisted main by a valve body, a motor, a ceramic valve core. The core has a kinetic block and a static block. The static block has high voltage interface and low voltage interface that connected to the compressor, in-house interface that connected to in-house coil pipe interface, outdoor interface that connected to outdoor coil pipe interface. The motor is driven by the motor; it has a high voltage slot and a low voltage slot. The high voltage interface is connected to the high voltage slot correspondently; the low voltage interface is connected to the low voltage slot correspondently. The in-house pipe interface and the outdoor pipe interface are connected to the high voltage slot and low voltage slot, and the in-house pipe interface and the outdoor pipe interface will change their relation to the high voltage slot and low voltage slot on the movement of the kinetic block. This invention is no leaking, and it doesn't dirty plug, oil plug, and ice plug. The reversing is stable, and the versatility is good, the range of endurance of temperature is wide. It doesn't need cooling system when install anti.

Description

Technical field: [0001] The invention relates to an electric four-way reversing valve used for reversing the steam flow of an air conditioner. Background technique: [0002] The air conditioner can realize the two functions of cooling and heating, and it is inseparable from the steam flow reversing valve. The existing steam flow reversing valve generally uses a four-way electromagnetic reversing valve, and its structure has been shown in Figure 5 of the accompanying drawing. It can be seen from this picture that the steam flow reversing valve is mainly composed of a solenoid pilot valve, a cylinder type reversing valve, high and low pressure pipes connected to the compressor, and an outdoor connecting pipe connected to the outdoor coil and the indoor coil. It is composed of indoor connecting pipes and capillary tubes, among which two capillary tubes are respectively connected to both ends of the cylinder. When the solenoid valve is energized, one of the two capillary tubes i...

AI Technical Summary

Problems solved by technology

The disadvantages of this structure are: 1. In the two working states (refrigeration or heating) of the air conditioner, the heating state makes the electromagnetic valve energized for a long time, and the long-term energization not only wastes electric energy but also makes the electromagnetic valve easy to burn. Bad; 2. The material of the slider in the cylinder is plastic, and the material of the cylinder body is metal. The materials of the two are different, so there is inevitably gas leakage, and the seal between the piston and the cylinder and the electromagnetic pilot valve are also inevitable. There is a leakage problem. For this reason, the manufacturer believes that the internal leakage of the valve is between 1000-15000ml / min. In fact, this has directly affected the power of the air conditioner and the overall energy consumption.

3. The reversing valve is very easy to block and jam the piston, slider and capillary due to impurities generated by mechanical motion friction. In addition, due to the reduction of internal pressure difference or the reduction of energy efficiency ratio of the compressor, the reversing valve will appear. The phenomenon of incomplete or no reversing, and the phenomenon of dirty blockage and jamming will also cause the electromagnetic coil to break down and short circuit to damage. At the same time, the complex liquid circuit of the valve makes the refrigerant flow resistance large (0.015MPa)

5. Since the reversing of the existing electromagnetic valve is realized by the internal pressure difference, the size of the reversing valve will depend on the power of the compressor, so the existing four-way electromagnetic reversing valve is not universal

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