Electric fluid heater

Abstract

The invention discloses an electric fluid heater, which comprises a tubular electric heating element (1), a fluid pipeline (2) and a heat conductor (3). The tubular electric heating element (1) and the fluid pipeline (2) are arranged in the heat conductor (3). Wiring terminals (11) of the tubular electric heating element (1) and ports (21) of the fluid pipeline (2) extend out of the heat conductor (3). By the structure that the tubular electric heating element and the fluid pipeline are packaged by the heat conductor, the tubular electric heating element is packaged by the heat conductor, so that the problem of tubular electric heating element damage or safety accidents caused by the corrosion of air and water to the surface of the tubular electric heating element is solved, and the reliability and the safety of the tubular electric heating element are improved; and heat is transferred between the tubular electric heating element and the fluid pipeline by the heat conductor, and a heat conductivity coefficient of the heat conductor is higher than that of the air and the water, so that an equal amount of heat can be transferred through the tubular electric heating element by using a smaller heat transfer area within the same time.

Description

technical field [0001] The invention relates to a fluid electric heater, which is especially suitable for heat pump systems such as heat pump water heaters and heat pump air conditioners, and is used for heating refrigerant, water, air or other media. Background technique [0002] In the prior art, when the heat pump is running, if electric auxiliary heating is needed, electric heating tubes are generally used to directly heat air, water and other media, but in some cases, air, water and other media will produce a certain degree of heat on the surface of the electric heating tube Adverse effects, such as corrosion, if the surface of the electric heating tube is damaged, it may not only cause the electric heating tube to fail to work normally, but may also cause serious safety accidents. Moreover, the thermal conductivity of air, water and other media is low, which affects the heating efficiency of the electric heating tube. The electric heating tube needs to use a larger hea...

AI Technical Summary

Problems solved by technology

[0002] In the prior art, when the heat pump is running, if electric auxiliary heating is needed, electric heating tubes are generally used to directly heat air, water and other media, but in some cases, air, water and other media will produce a certain degree of heat on the surface of the electric heating tube Adverse effects, such as corrosion, if the surface of the electric heating tube is damaged, it may not only cause the electric heating tube to not work properly, but may also cause serious safety accidents

Moreover, the thermal conductivity of air, water and other media is low, which affects the heating efficiency of the electric heating tube. The electric heating tube needs to use a larger heat transfer area to shorten the heating time of air, water and other media.

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