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Pressure limiting protection method and device, and pressure cooking utensil

A technology for pressure limiting protection and cooking utensils, which is applied to pressure cookers, cooking utensils, household appliances, etc., and can solve the problems of easy blocking of the exhaust valve core of pressure cooking utensils and failure of the pressure limiting device, so as to improve the safety of product use. The effect of improving the safety of use, improving the effectiveness and stability

Active Publication Date: 2016-08-31
FOSHAN SHUNDE MIDEA ELECTRICAL HEATING APPLIANCES MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, the above two methods have their fatal shortcomings. For the mechanical pressure limiting device, if the user uses the pressure cooker to cook food that is easy to block (for example, seaweed), the exhaust valve core of the pressure cooker is easy to The pressure limiting device is blocked, resulting in the failure of the pressure limiting device; and for the control method combined with software, although there is a positive correlation between the temperature and pressure in the pressure cooking appliance, but due to the different altitudes of the pressure cooking appliance relationship, even if the same temperature is generated in the pressure cooker, the pressure inside the pressure cooker at high altitudes is greater than the pressure at low altitudes, so this solution has limitations

Method used

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  • Pressure limiting protection method and device, and pressure cooking utensil
  • Pressure limiting protection method and device, and pressure cooking utensil
  • Pressure limiting protection method and device, and pressure cooking utensil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] Embodiment one: if image 3 As shown, it specifically includes the following process steps:

[0065] Step S10, detecting whether the temperature change value in the pressure cooking appliance is less than or equal to the preset temperature value in each of the preset time intervals in at least one preset time interval;

[0066] Step S20, when it is detected that the temperature change value within each preset time interval is less than or equal to the preset temperature value, record the dynamic equilibrium temperature.

[0067] In this embodiment, in order to ensure the accuracy and stability of the obtained dynamic equilibrium temperature, at least one preset time interval is selected during the process of starting the pressure limiting device for exhausting, and each preset time interval is detected Whether the temperature change values ​​in the pressure cooking appliances in the internal pressure cooking appliance are all less than or equal to the preset temperatur...

Embodiment 2

[0068] Embodiment two: if Figure 4 As shown, it specifically includes the following process steps:

[0069] Step S30, when it is determined that the temperature inside the pressure cooking appliance changes from the first temperature to the second temperature, and the temperature difference between the first temperature and the second temperature is a preset temperature value, it is detected that Whether the elapsed time for the first temperature to change to the second temperature is greater than or equal to a preset time, wherein the first temperature corresponds to the second temperature one by one;

[0070] Step S40, recording the dynamic equilibrium temperature when it is detected that the elapsed time from the first temperature to the second temperature is greater than or equal to the preset time.

[0071] In this embodiment, in order to ensure the accuracy and stability of the obtained dynamic equilibrium temperature, the temperature change in the pressure cooking app...

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Abstract

The invention provides a pressure limiting protection method, a pressure limiting protection device and a pressure cooking utensil. The pressure cooking utensil comprises a pressure limiting device; the pressure limiting protection method comprises the following steps: when the pressure inside the pressure cooking utensil is detected to be larger than limiting pressure of the pressure limiting device, starting the pressure limiting device to perform air exhaust; acquiring dynamic equilibrium temperature inside the pressure cooking utensil; calculating pressure limiting protection temperature according to the dynamic equilibrium temperature; performing heating control on the pressure cooking utensil according to the pressure limiting protection temperature. Through the technical scheme provided by the invention, the effectiveness and the stability of pressure limiting protection can be improved, the product use safety of the pressure cooking utensil is further improved, and the user's use experience is improved.

Description

technical field [0001] The present invention relates to the technical field of household electrical appliances, in particular to a pressure limiting protection method, a pressure limiting protection device and a pressure cooking appliance. Background technique [0002] At present, pressure cooking appliances, such as electric pressure cookers, use mechanical pressure limiting devices (for example, weights) to exhaust and release pressure for pressure limiting protection, or use a combination of software to control (for example, use a temperature sensor to set a fixed pressure limiting temperature point). [0003] However, the above two methods have their fatal shortcomings. For the mechanical pressure limiting device, if the user uses the pressure cooker to cook food that is easy to block (for example, seaweed), the exhaust valve core of the pressure cooker is easy to The pressure limiting device is blocked, resulting in the failure of the pressure limiting device; and for ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A47J27/08A47J27/09A47J27/086
CPCA47J27/0802A47J27/086A47J27/09
Inventor 顾青松梁三林任蓬勃张亮
Owner FOSHAN SHUNDE MIDEA ELECTRICAL HEATING APPLIANCES MFG CO LTD
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