Refrigerant electric heating device of air conditioner outdoor machine

Abstract

The invention relates to an electric heating device, in particular to a refrigerant electric heating device of an air conditioner outdoor machine. The refrigerant electric heating device of the air conditioner outdoor machine is used for performing defrosting on the air conditioner outdoor machine and comprises a cylindrical casing. The front end of the casing is closed, a side wall of a front section of the casing is provided with a refrigerant inlet connected with a refrigerant tube, the refrigerant tube is in sealing connection with the casing in a welding mode, and the back end of the casing is provided with a refrigerant outlet. The center of the casing is provided with an electric heating tube, and an electrode of the electric heating tube is led out from the front end of the casing. The electric heating tube comprises a tube casing, a heating wire and a heat-conducting insulation medium, wherein the heating wire and the heat-conducting insulation medium are positioned in the tube casing. An outer wall of the tube casing is provided with spiral cooling fins, and the outer edges of the cooling fins are in gap match with the inner diameter of the casing to enable a spiral refrigerant channel between the tube casing and the casing. The refrigerant electric heating device is compact in structure, high in heating efficiency, good in sealing performance and reliable in operation.

Description

technical field [0001] The invention relates to an electric heating device, in particular to an electric heating device for refrigerant of an outdoor unit of an air conditioner used for the defrosting function of the outdoor unit of the air conditioner. Background technique [0002] In winter, frost is the main reason that affects the heating effect of heat pump air conditioners. When the outdoor ambient temperature is close to or lower than 0°C, the outdoor unit of the air conditioner needs to be defrosted. In the limited defrosting time, the heat pump air conditioner only relies on the output heat of the whole unit itself to defrost, which takes a long time, and the heat of the air-conditioning indoor mechanism decreases or cannot be heated at all during this period. At present, some air conditioners use an auxiliary electric heating device in the indoor unit for auxiliary heating when heating in winter, but the heating effect is not good and the efficiency is also low. ...

AI Technical Summary

Problems solved by technology

In the limited defrosting time, the heat pump air conditioner only relies on the output heat of the whole unit itself to defrost, which takes a long time, and the heat of the air-conditioning indoor mechanism decreases or cannot be heated at all during this period

At present, some air conditioners use auxiliary electric heating device in the indoor unit for auxiliary heating when heating in winter, but the heating effect is not good and the efficiency is also low

By directly heating the refrigerant in the outdoor unit, the efficiency of auxiliary heating can be improved, but the existing common fluid heating device has defects such as complex structure, large volume, poor sealing, and low heating efficiency, and cannot adapt to high-performance air conditioners. Requirements for the use of machine refrigerant auxiliary heating

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