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Anti-dry-burning dish washing machine

A dishwasher and anti-dry burning technology, which is applied to the washing machine/washing machine for tableware, parts of the washing machine/rinsing and washing machine for tableware, cleaning equipment, etc. Effects of standby power consumption, cost reduction, and circuit simplification

Active Publication Date: 2018-11-16
JOYOUNG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these anti-dry-burning solutions all prevent dry-burning by measuring the amount of water, and the anti-dry-burning solution cannot be implemented when the sensor fails or the water amount is at a zero threshold.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] see figure 1Shown is the first preferred embodiment of the anti-boil-dry dishwasher of the present invention. The anti-boil-dry dishwasher includes heating equipment, a temperature controller, a main control chip and peripheral hardware circuits. The peripheral circuits include The detection circuit for detecting the on-off of the thermostat and the protection circuit for disconnecting the main circuit connected to the heating equipment; the main control chip is connected with the detection circuit and the protection circuit, so that after the detection circuit detects that the thermostat is disconnected, the The protection circuit disconnects the main circuit. The detection circuit detects the on-off of the thermostat. By detecting the on-off of the thermostat, it can respond to dry heating more quickly. Once the thermostat is disconnected, the power supply of the heating equipment is disconnected, and the main control chip controls The protection circuit disconnects ...

Embodiment 2

[0040] see figure 2 Shown is a second preferred embodiment of a boil-dry-proof dishwasher of the present invention, the difference between the boil-dry-proof dishwasher and the boil-dry-proof dishwasher of the first preferred embodiment is that : In order to improve safety, the detection circuit is provided with an optocoupler, and the optocoupler isolates the strong current part circuit and the weak current part circuit of the detection circuit. The strong current part and the weak current part of the detection circuit are isolated by optocoupler, which is safer.

Embodiment 3

[0042] see image 3 Shown is a third preferred embodiment of a boil-dry-proof dishwasher of the present invention, the difference between the boil-dry-proof dishwasher and the burn-dry-proof dishwasher of the second preferred embodiment is that : In order to reduce standby power consumption, the detection end of the detection circuit is connected to the live wire connection end of the thermostat; the power supply end of the power part circuit of the detection circuit is the live wire connection end connected to the live wire. In the standby state, the protection circuit disconnects the main circuit, and both ends of the optocoupler are L, and no current flows at this time, thereby effectively reducing the standby power consumption. The protection circuit can also be used as a control circuit for controlling the operation of the heating equipment, such as starting and stopping of the heating equipment during normal operation, which is beneficial to simplify the circuit and redu...

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Abstract

The invention provides an anti-dry-burning dish washing machine. The dish washing machine comprises a heating device, a temperature controller, a main control chip and a peripheral hardware circuit; the peripheral circuit comprises a detection circuit for detecting the on / off state of the temperature controller and a protection circuit for disconnecting a main circuit connected with the heating device; the main control chip is connected with the detection circuit and the protection circuit so that the main circuit can be disconnected through the protection circuit after the detection circuit detects that the temperature controller is switched off. By detecting the on / off state of the temperature controller, a rapider response can be made to dry burning; once the temperature controller is switched off, the heating device is powered off, and the main control chip controls the protection circuit to disconnect the main circuit; when the temperature controller recovers, as the main circuitis still disconnected by the protection circuit, the heating device cannot be powered on, and dry burning is effectively prevented. Besides, the detection accuracy is high, and the anti-dry-burning reliability is also more satisfactory.

Description

technical field [0001] The invention relates to a dishwasher, in particular to a dishwasher that prevents dry burning. Background technique [0002] Dishwashers are an essential piece of equipment in the home kitchen. Dishwashers currently on the market are roughly divided into desktop dishwashers, built-in dishwashers, and sink dishwashers. Small and other advantages, widely favored by consumers. [0003] During the cleaning process, the dishwasher needs high-power heating equipment to heat water to achieve the best cleaning effect. On the one hand, because the dishwasher uses special dishwashing powder, etc., it needs to work at a higher temperature; on the other hand, bacteria can be eliminated in a high-temperature environment for a long time to achieve the effect of sterilization. However, once the dishwasher has less water or water leaks, there will be a problem of dry burning. Once the machine is running dry, it is likely to damage the dishwasher. In order to avoi...

Claims

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Application Information

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IPC IPC(8): A47L15/00A47L15/42
CPCA47L15/00A47L15/0049A47L15/4285A47L15/4287
Inventor 朱泽春龙永杰陶玉强
Owner JOYOUNG CO LTD
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