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Water shortage detection circuit and water shortage detection method of evaporator

A detection circuit and detection method technology, which is applied in the direction of liquid level indicators for physical variable measurement, can solve problems such as large influence, scale adhesion, and impact on detection accuracy, and achieve the effect of accurately detecting whether there is water shortage

Pending Publication Date: 2020-12-04
VATTI CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The probe will have scale attached after long-term use, which will affect the detection accuracy; although the sensor component is accurate in detection, it has a high cost and is greatly affected by water quality

Method used

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  • Water shortage detection circuit and water shortage detection method of evaporator
  • Water shortage detection circuit and water shortage detection method of evaporator
  • Water shortage detection circuit and water shortage detection method of evaporator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] see figure 1 , this embodiment provides a water shortage detection circuit for an evaporator, including an evaporator drive unit 1, a controller 2, and a vibration detection unit 3, and the evaporator drive unit 1 is connected to the evaporator (not shown in the figure) and the control unit respectively. Device 2 is used to control the working state of the evaporator. The vibration detection unit 3 is arranged on the evaporator and connected with the controller 2, and is used for monitoring the vibration change value generated by the evaporator within a set time t1. One end of the controller 2 is connected to the power supply and the other end is grounded, and the controller 2 is used to determine whether the evaporator 10 is boiling with a small amount of water or lacking water according to the vibration change value monitored by the vibration detection unit 3 .

[0037] In this embodiment, when water boils in the evaporator 10, vibration will be generated. When the ...

Embodiment 2

[0045] see Figure 2-3 This embodiment provides a water shortage detection method for an evaporator, the evaporator 10 is connected to the controller 2 through the evaporator driving unit 1 , so that the controller 2 can control the working state of the evaporator 10 . The vibration detection unit 3 is connected to the evaporator 10 and the controller 2 respectively, and is used for monitoring the change value of the vibration generated by the evaporator 10 within a set time t1. The water pump 40 is connected to the controller 2 through the water pump driving unit 4 and used for injecting water into the evaporator 10 . The water shortage detection method comprises steps:

[0046] S1: control the evaporator 10 to start working;

[0047] Specifically, the controller 2 outputs a high level and controls the evaporator 10 to start working through the evaporator driving unit 1, so as to heat the water in the evaporator 10 to boil and generate steam. When water boils in the evapor...

Embodiment 3

[0062] refer to Figure 5 , The difference between this embodiment and Embodiment 2 is that it also includes step S4: start the water pump 40 to replenish water to the evaporator 10, and other parts are the same as Embodiment 1.

[0063] see Figure 6 , preferably, in step S4, the starting water pump 40 replenishes water to the evaporator 10, which specifically includes:

[0064] S41: Control the evaporator 10 to stop working, or reduce the working power of the evaporator 10;

[0065] Specifically, the controller controls the evaporator 10 to stop working or reduce the working power of the evaporator 10 to avoid dry burning of the evaporator 10 and waste of electric energy, which is beneficial to prolong the service life of the evaporator 10 .

[0066] S42: start the water pump 40 to supply water to the evaporator 10, and start timing at the same time;

[0067] S43: After the water pump 40 continues to work for the preset time t2, control the evaporator 10 to resume normal ...

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Abstract

The invention discloses a water shortage detection circuit and a water shortage detection method for an evaporator. The water shortage detection circuit comprises an evaporator driving unit and a controller, and further comprises a vibration detection unit, wherein the vibration detection unit is used for monitoring a vibration change value generated by the evaporator in set time t1, the evaporator driving unit and the vibration detection unit are respectively connected with the controller, and the controller is used for judging whether the evaporator is boiled in a small amount of water or lacks water according to the monitored vibration change value. According to the water shortage detection circuit, water shortage is judged according to the boiling vibration change of water in the evaporator, and compared with an existing mode that a probe or a liquid level sensor assembly is used for detecting the water level, whether the evaporator lacks water or not can be accurately detected, and the defects of an existing water shortage detection element can be overcome.

Description

technical field [0001] The invention relates to the technical field of cooking equipment, in particular to a water shortage detection technology for an evaporator of the cooking equipment. Background technique [0002] At present, when there is no water in the evaporator of products such as steamers and ovens, it is necessary to notify the control system of water shortage in time to prevent the evaporator from being dry for a long time and overheating. It is common practice to use a probe or level sensor assembly to detect water level. After long-term use, scale will adhere to the probe, which will affect the detection accuracy; although the sensor component is accurate in detection, it has a high cost and is greatly affected by water quality. Contents of the invention [0003] The present invention aims at at least to a certain extent to solve one of the problems existing in the related art. Therefore, the present invention proposes a water shortage detection circuit of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01F23/22
CPCG01F23/22
Inventor 罗钊明潘叶江
Owner VATTI CORP LTD