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A liquid level device for a liquid heater

A liquid heater and heating device technology, which is applied in the directions of fluid heaters, water heaters, lighting and heating equipment, etc., can solve the problems of difficulty in controlling the lowest water level of the kettle, complicated circuit structure and low accuracy, etc., and achieves easy control. , mature technology, precise control effect

Active Publication Date: 2018-04-20
苏州医疗器械产业发展集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] 1) The bimetal switch is easy to realize the anti-dry function in the state of water shortage, but it is difficult to control the minimum water level in the kettle
[0004] 2) The method of judging the water level by the change of the resistance value between the metal conductor and the water at the water level detection point is not very accurate, and there are great difficulties in the process, and the circuit structure is quite complicated and the cost is high

Method used

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  • A liquid level device for a liquid heater
  • A liquid level device for a liquid heater

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Effect test

Embodiment 1

[0020] see figure 1 , the liquid level device of the liquid heater of the present invention includes a casing 8, a non-conductor container 6, a liquid heating device, a conduit 3 is arranged in the container 6, and a temperature sensing probe is placed at the end of the conduit 3, and the liquid heating device includes In the insulating sealing cover 4 , an induction heating coil 1 is arranged inside the insulating sealing cover 4 , and the metal cylinder 2 is arranged around the induction heating coil 1 outside the insulating sealing cover 4 . The end of the conduit 3 is close to the metal cylinder at a distance A; the temperature sensing probe is located on the liquid level control line of the container; the temperature sensing probe is connected to the input end of the controller, and the controller drives the induction heating coil. The bottom of the housing 8 is the base 5, and each functional circuit board of the electrical device is arranged in the base 5, including a c...

Embodiment 2

[0028] see figure 2 , the liquid level device of the liquid heater of the present invention includes a casing 8 and a container 6, a conduit 3 is arranged in the container, and a temperature sensing probe is placed at the end of the conduit, the container 6 is a metal vessel, and the conduit 3 The end of the container is close to the inner wall of the container at an interval distance A; an induction heating coil 1 is arranged around the outer wall of the container in the casing 8; the temperature sensing probe is located on the liquid level control line of the container; the temperature sensing probe A controller is connected, and the controller drives the induction heating coil. The separation distance A of the ends of the catheter is in the range of 5≤A≤15mm. A soft magnetic ring 10 is provided in the casing corresponding to the outer wall of the induction heating coil 1 .

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Abstract

The invention discloses a liquid level device of a liquid heater. The liquid level device comprises a shell, a non-conductor container and a liquid heating device. A guide tube is arranged in the container, and the tail end of the guide tube is provided with a temperature sensing probe. The liquid heating device comprises an induction heating coil and a metal cylinder in the container. The tail end of the guide tube is close to the metal cylinder at the interval of the distance A. The temperature sensing probe is located on a liquid level control line of the container. The temperature sensing probe is connected with a controller. The controller drives the induction heating coil. By means of the liquid level device of the liquid heater, changes of the water level in a kettle can be judged precisely through changes of the temperature so that control of the minimum water level can be achieved easily, the service life of the liquid heater is prolonged, damage to electrical parts and potential safety hazards both caused by excessively low water level are eliminated, and a water heater is prevented from being dry-burned.

Description

technical field [0001] The invention relates to the technical field of liquid heaters such as electric kettles, in particular to a liquid level device of a liquid heater. Background technique [0002] Electric kettle is a common electrical appliance. The usual structure is to use an electric heater to heat the water in the kettle container until the water is boiled. Electric water heaters mostly use resistance heating tubes. Generally, electric heating tubes are used when water is scarce. In the state, it will burn out in a very short period of time. During the use of the electric water heater, due to the evaporation of water and the drop of water level, it is easy to cause the liquid to dry out, the heater to burn out, and even a safety accident occurs. Therefore, when the electric kettle boils water, the water level in the kettle cannot be lower than the minimum water level, so as not to burn the heating pipe. Regarding the electrical safety of liquid heaters, there are r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24H1/20F24H9/20
Inventor 殷少有
Owner 苏州医疗器械产业发展集团有限公司
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