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An electric heating protection circuit and an air conditioner

A protection circuit, electric heating technology, applied in heating methods, air conditioning systems, lighting and heating equipment, etc., can solve problems such as inability to judge overcurrent protectors and overload protectors, overcurrent or overload, and electric heating cannot provide heat sources.

Active Publication Date: 2022-07-12
NINGBO AUX ELECTRIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current electric heating is directly connected to the neutral line and the live line through the switch to ensure the normal operation of the electric heating. However, it is impossible to judge whether the components such as the overcurrent protector and the overload The protector and overload protector have been disconnected or damaged, or overcurrent or overload may occur when the electric heater is in working condition, so that the electric heater cannot provide heat source

Method used

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  • An electric heating protection circuit and an air conditioner
  • An electric heating protection circuit and an air conditioner
  • An electric heating protection circuit and an air conditioner

Examples

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no. 1 example

[0027] see figure 1 , this embodiment provides an electric heating protection circuit 100. The electric heating protection circuit 100 provided in this embodiment can detect whether the overcurrent device is working normally, and the heating element 120 can be started only when the overcurrent device is working normally. Thus, it is ensured that the heating element 120 can work normally.

[0028] Electric heating is widely used in air conditioners. When the air conditioner is running in the heating mode, if the heat exchange of the refrigerant is not enough to make the indoor air reach the target temperature set by the user, auxiliary heating can be performed by electric heating, so that the air conditioner can be heated from the air conditioner. The air blown from the indoor unit of the appliance can reach the target temperature. The current electric heating is directly connected to the neutral wire and the live wire through a switch, so as to ensure the normal operation of ...

no. 2 example

[0070] This embodiment provides an air conditioner. The air conditioner provided in this embodiment can detect whether the overcurrent device is working normally, and the heating element 120 can be started only when the overcurrent device is working normally, so as to ensure that the heating element 120 can operate normally. normal work.

[0071] For a brief description, reference may be made to the first embodiment for the parts not mentioned in this embodiment.

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PUM

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Abstract

The invention provides an electric heating protection circuit and an air conditioner, and relates to the technical field of air conditioners. The electric heating protection circuit includes: a protector, a heating element, a first switch unit and a second switch unit, the second switch unit is electrically connected to the power supply through the protector, and the first switch unit and the second switch unit are connected in series with the heating element and the power supply between; the second switch unit is turned on under the condition that the protector is turned on, and the first switch unit is turned on under the condition of receiving the start signal, so that the heating element and the power supply are turned on. The second switch unit is turned on under the condition that the protector is turned on, the first switch unit is turned on under the condition that the start signal is received, and the heating element starts to heat under the condition that the first switch unit and the second switch unit are turned on at the same time, That is to say, when the protector is normal and the start signal is received, the heating element starts heating, which can ensure that the heating element is started only when the protector is normal, so that the heating element can work normally.

Description

technical field [0001] The present invention relates to the technical field of air conditioners, and in particular, to an electric heating protection circuit and an air conditioner. Background technique [0002] Electric heating is widely used in air conditioners. When the air conditioner is running in the heating mode, if the heat exchange of the refrigerant is not enough to make the indoor air reach the target temperature set by the user, auxiliary heating can be performed by electric heating, so that the air conditioner can be heated from the air conditioner. The air blown from the indoor unit of the appliance can reach the target temperature. The current electric heating is directly connected to the neutral wire and the live wire through the switch, so as to ensure the normal operation of the electric heating. However, during the operation of the electric heating, it is impossible to judge whether the components such as the overcurrent protector and the overload protecto...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24F11/88F24F1/0093
CPCF24F11/88F24F1/0093F24F2221/34Y02B30/00
Inventor 张磊陈志强
Owner NINGBO AUX ELECTRIC