Auxiliary control circuit applied to water medium heating equipment

Abstract

The utility model discloses an auxiliary control circuit applied to water medium heating equipment, and relates to the technical field of temperature control, and the auxiliary control circuit is in communication connection with a control system of the water medium heating equipment. The auxiliary control circuit comprises a temperature detection module and a control module; the control module is used for detecting the water temperature in the water medium heating equipment, and when the water temperature value is larger than a preset temperature value, the control module cuts off a power source of the water medium heating equipment. Therefore, the medium heating equipment without the anti-dry-burning function has the anti-dry-burning function, and the use safety is improved.

Description

Technical Field

[0001] This application relates to the technical field of temperature control, and particularly to an auxiliary control circuit applied to a water medium heating device. Background Art

[0002] Water medium heating devices, including ultrasonic cleaners, water baths, constant temperature water baths, etc., are widely used in scenarios such as laboratories and factories. Existing water medium heating devices prevent dry burning through methods such as automatic water replenishment or liquid level control, thereby improving safety.

[0003] In actual situations, there is a batch of old water medium heating devices that cannot be replaced due to various reasons such as cost and are still in service on the front line of production and life. They lack the function of preventing dry burning, and even when monitored during use, problems such as overheating and damage of the heating components often occur due to insufficient water level. Summary of the Invention

[0004] Technical Problems to be Solved

[0005] Aiming at the above-mentioned defects of the existing technology, how to improve the use safety of water medium heating devices without the function of preventing dry burning.

[0006] Technical Solutions

[0007] To solve the above problems, an auxiliary control circuit applied to a water medium heating device is provided. The auxiliary control circuit is communicatively connected to the control system of the water medium heating device;

[0008] The auxiliary control circuit includes a temperature detection module and a control module;

[0009] The control module is used to detect the water temperature in the water medium heating device. When the water temperature value is greater than the preset temperature value, the control module disconnects the power supply of the water medium heating device.

[0010] Among them, the auxiliary control circuit further includes a rectification module, and the rectification module is used to rectify alternating current into direct current.

[0011] Among them, after the mains power is turned on, the auxiliary control circuit is powered on prior to the water medium heating device.

[0012] Among them, the temperature sensor of the temperature detection module is sequentially arranged on the heating component of the water medium heating device in the order of the first layer of temperature equalizing material, thermal conductive adhesive, temperature sensor, and the second layer of temperature equalizing material.

[0013] Among them, the temperature sensor is a thermistor or a bimetal coupled temperature sensor or a temperature-sensitive triode.

[0014] Among them, the preset temperature value is 95 degrees Celsius.

[0015] Advantages of the present application

[0016] Compared with the prior art, by adding an auxiliary control circuit to a medium heating device without a dry - burning prevention function, the medium heating device without a dry - burning prevention function is provided with a dry - burning prevention function, thus increasing the safety in use. Description of the drawings

[0017] Figure 1 is the circuit schematic diagram of the present application;

[0018] Figure 2 is the structural schematic diagram of the temperature detection module of the present application;

[0019] In the figure, 1 is the heating component; 2 is the temperature - equalizing material; 3 is the thermal conductive adhesive; 4 is the temperature sensor. Detailed implementation manners

[0020] The following combines the drawings and embodiments to further describe in detail the specific implementation manners of the present application. The following embodiments are used to illustrate the present application, but cannot be used to limit the scope of the present application.

[0021] As Figure 1 shown, in this embodiment, the technical solution of the present application is applied to an ultrasonic cleaner, and the ultrasonic cleaner includes an ultrasonic water tank and a soft electric heating plate H1 on the outer periphery of the water tank; the auxiliary control circuit is connected to the original machine control circuit of the ultrasonic cleaner through ports G1, G5, and G7.

[0022] The auxiliary control circuit includes a temperature detection module, a rectification module, and a control module.

[0023] The rectification module is a controlled rectifier DD1, and the controlled rectifier DD1 rectifies alternating current into direct current for powering other modules.

[0024] The control module mainly includes a single - chip microcomputer IC1 for processing signals and a preset temperature - controlled single - chip microcomputer IC2. The single - chip microcomputer IC1 and the preset temperature - controlled single - chip microcomputer IC2 are communicatively connected through ports G2 and G4, a triode Q1 and a triode Q2 for amplifying signals, and the preset temperature - controlled single - chip microcomputer IC2 is interlocked with the electric heating plate H1 through a switch DK1.

[0025] When the temperature value detected by any one of the thermal switch DK4, the temperature - controlled switch DK2, and the bimetal - coupled temperature sensor DK3 is greater than the preset 95 degrees Celsius, the preset temperature - controlled single - chip microcomputer IC2 disconnects the power supply of the ultrasonic cleaner.

[0026] After manually pressing the trigger switch K1, the circuit is closed, and the power supply lock of the ultrasonic cleaner is triggered to be released through port G1, and the device resumes power supply.

[0027] By adding an auxiliary control circuit to a medium heating device without a dry - burning prevention function, the medium heating device without a dry - burning prevention function is given the function of preventing dry burning, thus increasing the safety of use.

[0028] As Figure 2 shown, the temperature sensor of the temperature detection module is sequentially arranged on the heating component 1 of the water medium heating device in the order of the first - layer temperature - equalizing material 2, thermal conductive adhesive 3, temperature sensor 4, and the second - layer temperature - equalizing material.

[0029] In this embodiment, the heating component 1 is an outer - peripheral soft electric heating plate.

[0030] Through the combination and precise layout of the temperature - equalizing material, thermal conductive adhesive, and temperature sensor, while improving the temperature uniformity of each core location of the heating component 1 of the ultrasonic cleaner, each sensor accurately detects parameters.

[0031] The above embodiments are only used to illustrate the present application and are not intended to limit the present application. Those of ordinary skill in the relevant technical field can also make various changes and modifications without departing from the spirit and scope of the present application. Therefore, all equivalent technical solutions also belong to the scope of the present application, and the patent protection scope of the present application shall be defined by the claims.

Claims

1. An auxiliary control circuit for a water medium heating device, characterized in that: The auxiliary control circuit is communicatively connected with the control system of the water medium heating device; The auxiliary control circuit includes a temperature detection module and a control module; The control module is used to detect the water temperature in the water medium heating device. When the water temperature value is greater than a preset temperature value, the control module disconnects the power supply of the water medium heating device.

2. The auxiliary control circuit for water medium heating equipment according to claim 1, characterized in that: The auxiliary control circuit also includes a rectifier module, which is used to rectify alternating current into direct current.

3. The auxiliary control circuit for water medium heating equipment according to claim 2, characterized in that: After the mains power is turned on, the auxiliary control circuit is powered on before the water medium heating device.

4. The auxiliary control circuit for water medium heating equipment according to claim 3, characterized in that: The temperature sensor of the temperature detection module is arranged on the heating component of the water medium heating device in the order of a first layer of temperature balancing material, thermal conductive glue, the temperature sensor and a second layer of temperature balancing material.

5. The auxiliary control circuit for water medium heating equipment according to claim 4, characterized in that: The temperature sensor is a thermistor, a bimetallic coupled temperature sensor, or a temperature sensitive triode.

6. The auxiliary control circuit for water medium heating equipment according to claim 1, characterized in that: The preset temperature value is 95 degrees Celsius.

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