CN-122015073-A - Evaporator control method, evaporator and cooking equipment

CN122015073ACN 122015073 ACN122015073 ACN 122015073ACN-122015073-A

Abstract

The invention provides an evaporator control method, an evaporator and cooking equipment, and relates to the technical field of intelligent home. The method comprises the steps of acquiring temperature data of the evaporator, acquiring a plurality of temperature values based on a preset sampling frequency, determining the temperature change rate of the evaporator based on the temperature data, adjusting the working state of the evaporator and sending an alarm signal based on the temperature change rate and the result that the current temperature value is respectively compared with a preset state condition, wherein the working state comprises heating power and water supplementing rate, designing the power-adjustable evaporator, controlling the water supplementing rate and the evaporation power of the evaporator through the current temperature and the temperature change rate, discarding mechanical water level detection, effectively avoiding the problem caused by clamping stagnation of a mechanical structure, reducing fluctuation of steam pressure according to a water supplementing mode with the rate adjustable comprehensively determined according to the temperature and the temperature change rate and the evaporation mode with adjustable power, reducing the influence on cooking, and improving user experience.

Inventors

WANG WENLONG
HU RONG
ZENG XIANWEI
REN FUJIA
YIN JIE

Assignees

杭州老板电器股份有限公司

Dates

Publication Date: 20260512
Application Date: 20260309

Claims (10)

1. An evaporator control method, characterized in that the evaporator comprises a temperature sensor, a heating device and a water inlet, the water inlet is connected with a corresponding water supplementing device, the temperature sensor is used for detecting the temperature of the evaporator, and the method comprises: acquiring temperature data of the evaporator, wherein the temperature data comprises a plurality of temperature values acquired based on a preset sampling frequency; determining a rate of change of temperature of the evaporator based on the temperature data; And adjusting the working state of the evaporator based on the temperature change rate and the current result of comparing the temperature value with preset state conditions respectively, and/or sending out an alarm signal based on the temperature change rate and the current result of comparing the temperature value with preset state conditions respectively, wherein the working state comprises heating power and water supplementing rate.
2. The method according to claim 1, wherein the state conditions include a maximum temperature value and a maximum temperature change rate value, adjusting an operation state of the evaporator based on the temperature change rate and a result of comparing the current temperature value with preset state conditions, respectively, and/or emitting an alarm signal based on the temperature change rate and the result of comparing the current temperature value with preset state conditions, respectively, comprising: If the temperature value is greater than the temperature maximum value, and if the temperature change rate is greater than the temperature change rate maximum value, the heating power is adjusted to zero and the water replenishment rate is adjusted to a preset first rate.
3. The evaporator control method according to claim 2, characterized in that the step of adjusting the operation state of the evaporator based on the temperature change rate and the results of comparing the current temperature values with preset state conditions, respectively, further comprises: And if the temperature value is smaller than or equal to the temperature maximum value, and if the temperature change rate is larger than the temperature change rate maximum value, adjusting the heating power to a preset first heating power and adjusting the water supplementing rate to a preset second rate, wherein the second rate is smaller than the first rate.
4. The method for controlling an evaporator according to claim 3, wherein the state conditions further include a first temperature change rate, and wherein the step of adjusting the operation state of the evaporator based on the temperature change rate and the results of comparing the current temperature values with preset state conditions, respectively, further includes: And if the temperature value is smaller than or equal to the temperature maximum value, and if the temperature change rate is larger than the first temperature change rate and smaller than or equal to the temperature change rate maximum value, adjusting the heating power to be a preset second heating power and the water supplementing rate to be a preset third rate, wherein the second heating power is larger than the first heating power, and the third rate is smaller than the second rate.
5. The evaporator control method according to claim 4, characterized in that the step of adjusting the operation state of the evaporator based on the temperature change rate and the results of comparing the current temperature values with preset state conditions, respectively, further comprises: The heating power is adjusted to the second heating power if the temperature value is less than or equal to the temperature maximum value and if the temperature change rate is greater than zero and less than the first temperature change rate.
6. The evaporator control method according to claim 5, characterized in that the step of adjusting the operation state of the evaporator based on the temperature change rate and the results of comparing the current temperature values with preset state conditions, respectively, further comprises: and if the temperature value is smaller than or equal to the temperature maximum value, and if the temperature change rate is smaller than zero, adjusting the heating power to a preset third heating power, wherein the third heating power is larger than the second heating power.
7. The method of controlling an evaporator according to claim 2, wherein the heating power is regulated by a thyristor, and the water replenishment rate is regulated by a PWM-controlled electromagnetic proportional valve.
8. The method for controlling an evaporator according to claim 2, wherein the alarm signal includes a temperature sensor malfunction alarm, a water shortage dry-fire alarm, and a heating pipe abnormal operation alarm; If the temperature value is greater than the maximum temperature value, and if the temperature change rate is less than the maximum temperature change rate, sending out a fault alarm of the temperature sensor; after the heating power is adjusted to zero and the water supplementing rate is adjusted to a preset first rate, if the temperature change rate is greater than zero after a preset first time, sending out the water shortage dry-burning alarm; after the heating power is adjusted to zero and the water supplementing rate is adjusted to a preset first rate, if the temperature change rate is smaller than or equal to zero and the temperature value is still larger than the temperature maximum value, a heating pipe abnormal operation alarm is sent out after a preset second time.
9. The evaporator is characterized by comprising a temperature sensor, a heating device and a water inlet, wherein the water inlet is connected with a corresponding water supplementing device, and the temperature sensor is used for detecting the temperature of the evaporator.
10. A cooking apparatus comprising the evaporator of claim 9.

Description

Evaporator control method, evaporator and cooking equipment Technical Field The invention relates to the technical field of intelligent home, in particular to an evaporator control method, an evaporator and cooking equipment. Background The existing cooking equipment needing steam participation is mostly provided with an evaporator, and the evaporator generates steam by heating water to realize a cooking function, so that water needs to be continuously supplemented to maintain a safe water level. In the traditional evaporator, a reed pipe and a magnetic floater are mostly adopted to detect the water level, and the working principle is that the floater drives an internal magnet along with the lifting of the water level, a reed pipe on-off signal is triggered, and a controller judges the water level state and controls the water pump to supplement water. However, the conventional evaporator is prone to misjudgment caused by scale deposition and magnetic float clamping stagnation, and the heating pipe of the evaporator usually adopts a fixed power control mode. When the water level is too low to trigger water replenishment, the fixed power heating pipe is still heated continuously with maximum power, and the injected normal-temperature cold water absorbs a large amount of heat instantly, so that the internal temperature of the evaporator is reduced sharply, the steam pressure is reduced suddenly, and after the cold water is heated to boiling, excessive steam is generated instantly due to continuous high-power heating, so that a pressure peak is formed. The severe pressure fluctuation of the dip-overshoot destroys the stability of the cooking environment, causes dryness on the surface of food, internal clamping, uneven mouthfeel during reheating, and easily generates condensed water in the cavity, thereby seriously affecting the cooking quality. Disclosure of Invention The invention aims to provide an evaporator control method, an evaporator and cooking equipment, wherein the power of the evaporator is adjustable, the water supplementing rate and the evaporation power of the evaporator are controlled through the current temperature and the temperature change rate, the mechanical water level detection is abandoned, the problem caused by clamping stagnation of a mechanical water level detection device due to mechanical structure is effectively avoided, the fluctuation of steam pressure is reduced according to the water supplementing mode with the adjustable rate and the evaporation mode with the adjustable power, which are comprehensively judged according to the temperature and the temperature change rate, the influence on cooking is reduced, and the user experience is improved. In a first aspect, the present invention provides a method for controlling an evaporator, the evaporator comprising a temperature sensor, a heating device and a water inlet, the water inlet being connected to a respective water replenishment device, the temperature sensor being adapted to detect the temperature of the evaporator, the method comprising: acquiring temperature data of the evaporator, wherein the temperature data comprises a plurality of temperature values acquired based on a preset sampling frequency; Determining a temperature change rate of the evaporator based on the temperature data; And adjusting the working state of the evaporator based on the temperature change rate and the result of comparing the current temperature value with preset state conditions respectively, and/or sending out an alarm signal based on the temperature change rate and the result of comparing the current temperature value with the preset state conditions respectively, wherein the working state comprises heating power and water supplementing rate. In some preferred embodiments of the present invention, the state conditions include a maximum temperature value and a maximum temperature change rate, and the step of adjusting the operating state of the evaporator based on the temperature change rate and the result of comparing the current temperature value with the preset state conditions, respectively, and/or sending an alarm signal based on the temperature change rate and the result of comparing the current temperature value with the preset state conditions, respectively, includes: if the temperature value is greater than the temperature maximum value, and if the temperature change rate is greater than the temperature change rate maximum value, the heating power is adjusted to zero and the water replenishment rate is adjusted to a preset first rate. In some preferred embodiments of the present invention, the step of adjusting the operation state of the evaporator based on the temperature change rate and the result of comparing the current temperature value with the preset state conditions, respectively, further includes: And if the temperature value is smaller than or equal to the temperature maximum value, and if the temperature change rate is larger