Cooking apparatus, control method thereof and control device

Patent metadata

Field	Value
Publication number	US-10973362-B2
Application number	US-201816141629-A
Country	US
Kind code	B2
Filing date	Sep 25, 2018
Priority date	May 4, 2017
Publication date	Apr 13, 2021
Grant date	Apr 13, 2021

Abstract

A pressure cooking apparatus, a method and device for controlling the same are provided. During a heating process of the apparatus, the device detects a pressure value inside the inner liner, a first temperature value when the detected pressure value rises to a first preset pressure threshold, and a second temperature value when the detected pressure value drops from the preset first pressure threshold to a second preset pressure threshold. Next the device acquires a temperature reference value according to a preset setting strategy using the first temperature value and the second temperature value and then compares a current temperature value detected by the temperature sensor with the temperature reference value. Finally, the device starts or stops the heating process based on the comparison result, thus reducing the on/off frequency of the apparatus and controlling the pressure inside the cooking apparatus more precisely and smoothly.

First claim

What is claimed is:

1. A method for controlling a pressure cooking apparatus, wherein the pressure cooking apparatus comprises a heating unit, an inner liner, a pressure detecting unit and a temperature sensor, the method comprising:
initiating a heating process of the heating unit to start heating inside the pressure cooking apparatus;
detecting by the pressure detecting unit a pressure value inside the inner liner during the heating process of the heating unit;
detecting by the temperature sensor a first temperature value when the detected pressure value rises to a first preset pressure threshold for a first time;
controlling the heating unit to stop heating;
detecting by the temperature sensor a second temperature value when the detected pressure value drops from the preset first pressure threshold to a second preset pressure threshold;
controlling heating unit to restart heating;
detecting by the temperature sensor a third temperature value when the detected pressure value rises to the first preset pressure threshold for a second time;
acquiring a temperature reference value according to a preset setting strategy using the third temperature value and the second temperature value; and
comparing a current temperature value detected by the temperature sensor with the temperature reference value, and controlling the heating unit to start or stop based on a comparison result.

2. The method according to claim 1 , wherein acquiring a temperature reference value according to a preset setting strategy using the third temperature value and the second temperature value further comprises:
setting one temperature value within a range from the first temperature value to the second temperature value as the temperature reference value, wherein the temperature reference value is less than the third temperature value and not less than the second temperature value.

3. The method according to claim 1 , wherein acquiring a temperature reference value according to a preset setting strategy using the third temperature value and the second temperature value further comprises:
acquiring the temperature reference value Tm according to a formula as below:

T
m

=

(

T
1

+

T
2

)

2

+

T
corrected

where T1 is the third temperature value, T2 is the second temperature value and T corrected is a corrected temperature value preset.

4. The method according to claim 1 , wherein controlling the heating unit to start or stop based on a comparison result further comprises:
controlling the heating unit to stop if the current temperature value is greater than or equal to the temperature reference value; and
controlling the heating unit to start if the current temperature value is less than the temperature reference value.

5. A device for controlling a pressure cooking apparatus, comprising:
a pressure detecting unit configured to detect a pressure value inside an inner liner in the pressure cooking apparatus;
a temperature sensor configured to detect a temperature value inside the inner liner;
a controlling module configured to, during a heating process,
initiate a heating process of the heating unit to start heating inside the pressure cooking apparatus;
detect by the pressure detecting unit a pressure value inside the inner liner during the heating process of the heating unit;
detect by the temperature sensor a first temperature value when the detected pressure value rises to a first preset pressure threshold for a first time;
control the heating unit to stop heating;
detect by the temperature sensor a second temperature value when the detected pressure value drops from the preset first pressure threshold to a second preset pressure threshold for a first time;
control the heating unit to restart heating;
detect by the temperature sensor a third temperature value when the detected pressure value rises to the first preset pressure threshold for a second time;
acquire a temperature reference value according to a preset setting strategy using the third temperature value and the second temperature value; and
compare a current temperature value detected by the temperature sensor with the temperature reference value, and control the heating unit to start or stop based on a comparison result.

6. The device according to claim 5 , wherein the controlling module is further configured to set one temperature value within a range from the third temperature value to the second temperature value as the temperature reference value, wherein the temperature reference value is less than the third temperature value and not less than the second temperature value.

7. The device according to claim 5 , wherein the controlling module is further configured to acquire the temperature reference value Tm according to a formula as below:

T
m

=

(

T
1

+

T
2

)

2

+

T
corrected

where T1 is the third temperature value, T2 is the second temperature value and T corrected is a corrected temperature value preset.

8. The device according to claim 5 , wherein the controlling module is further configured to:
control the heating unit to stop if the current temperature value is greater than or equal to the temperature reference value; and
control the heating unit to start if the current temperature value is less than the temperature reference value.

9. A pressure cooking apparatus comprising a heating unit, an inner liner, a pressure detecting unit and a temperature sensor, and a device for controlling a pressure cooking apparatus, wherein the pressure cooking apparatus further includes:
a pressure detecting unit configured to detect a pressure value inside the inner liner in the pressure cooking apparatus;
a temperature sensor configured to detect a temperature value inside the inner liner;
a controlling module configured to, during a heating process,
initiate a heating process of the heating unit to start heating inside the pressure cooking apparatus;
detect by the pressure detecting unit a pressure value inside the inner liner during the heating process of the heating unit;
detect by the temperature sensor a first temperature value when the detected pressure value rises to a first preset pressure threshold for a first time;
control the heating unit to stop heating;
detect by the temperature sensor a second temperature value when the detected pressure value drops from the p

Assignees

• Foshan Shunde Midea Electrical Heating Appliances Mfg Co Ltd

Inventors

• Gao Wanbao
• Yang Xingguo

Classifications

• A47J27/004 Primary

  with integral electrical heating means (drinking cups with integral heating means A47J36/2466) · CPC title

• A47J27/086

  with built-in heating means (adaptations of automatic switches for the heating means A47J27/62) · CPC title

• A47J27/09

  Safety devices · CPC title

• A47J27/0802 Primary

  Control mechanisms for pressure-cookers · CPC title