CN111109998A - Cooking appliance and pressure control method for cooking appliance - Google Patents
Cooking appliance and pressure control method for cooking appliance Download PDFInfo
- Publication number
- CN111109998A CN111109998A CN201811287789.8A CN201811287789A CN111109998A CN 111109998 A CN111109998 A CN 111109998A CN 201811287789 A CN201811287789 A CN 201811287789A CN 111109998 A CN111109998 A CN 111109998A
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- negative pressure
- cooking
- air pump
- cooking appliance
- air
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J27/00—Cooking-vessels
- A47J27/002—Construction of cooking-vessels; Methods or processes of manufacturing specially adapted for cooking-vessels
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J27/00—Cooking-vessels
- A47J27/08—Pressure-cookers; Lids or locking devices specially adapted therefor
- A47J27/0802—Control mechanisms for pressure-cookers
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J36/00—Parts, details or accessories of cooking-vessels
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J36/00—Parts, details or accessories of cooking-vessels
- A47J36/06—Lids or covers for cooking-vessels
Abstract
The invention discloses a cooking appliance and a pressure control method for the same, wherein the cooking appliance comprises: a kind of deep pot body, interior pot, lid, air pump, negative pressure release mechanism and controlling means. The air inlet of the air pump is communicated with the cooking space. The negative pressure release mechanism is capable of sealing or releasing the steam channel. The control means are configured to perform the following pressure controls at predetermined stages of the cooking process: the air pump is controlled to perform air pumping operation on the cooking space, the air pumping operation lasts for a first preset time, and the control device is configured to control the negative pressure releasing mechanism to perform negative pressure releasing operation before controlling the air pump to perform air pumping operation for each next time. The cooking appliance disclosed by the invention can keep a certain negative pressure state in the cooking space and also can prevent the situation that the cover cannot be opened due to the fact that the negative pressure value in the cooking space is too small.
Description
Technical Field
The invention relates to the technical field of cookers, in particular to a cooking appliance and a pressure control method for the cooking appliance.
Background
In the existing electric cooker products, a vacuum pump is sometimes arranged in the electric cooker, and the vacuum pump can pump out air in the cooker, so that the negative pressure state in the cooker is kept. The main stream operation method of the existing electric cooker with a vacuum pump is to make the vacuum pump work for a period of time, and when the negative pressure in the cooker reaches the minimum negative pressure value of the vacuum pump, the negative pressure is not reduced continuously, but is kept constant. And because most electric rice cookers are difficult to seal completely, so the gas leakage can occur in the pressure maintaining process, thereby the negative pressure value is slowly increased, and the air is often required to be pumped out again under the condition. And because the gas leakage degree of every electric rice cooker is inconsistent, so to the better electric rice cooker of leakproofness, bleed many times and can lead to the negative pressure in the culinary art space more and more low, and under the very low condition of negative pressure in the culinary art space, the phenomenon that can't uncap takes place easily to reduce user's use and experience.
Therefore, there is a need for a cooking appliance and a pressure control method for a cooking appliance to at least partially solve the problems in the prior art.
Disclosure of Invention
In order to solve the above problems, the present invention provides a cooking appliance including:
a pot body;
the inner pot is arranged in the pot body;
the cover body can be covered to the cooker body to form a cooking space between the cover body and the inner pot, and a steam channel for communicating the cooking space with the outside is arranged on the cover body;
the air inlet of the air pump is communicated with the cooking space;
a negative pressure release mechanism disposed at the steam channel to seal or release the steam channel; and
a control device configured to perform the following pressure control at a predetermined stage of the cooking process: the air pump is controlled to perform air pumping operation on the cooking space, the air pumping operation lasts for a first preset time, and the control device is configured to control the negative pressure releasing mechanism to perform negative pressure releasing operation before controlling the air pump to perform air pumping operation for each next time.
Preferably, the control means is further configured to maintain the inside of the cooking space in a negative pressure state for a second predetermined period of time after the pumping operation continues for the first predetermined period of time.
Preferably, the negative pressure releasing operation lasts for a third predetermined time period, and the third predetermined time period is less than the second predetermined time period.
Preferably, the control device is configured to control the air pump and the negative pressure release mechanism to cycle the pressure control until the predetermined phase ends or the predetermined phase duration reaches a preset duration.
Preferably, the predetermined phase comprises a soak phase.
Preferably, the control means is configured to control the air pump to start the air exhausting operation when the temperature in the cooking space reaches a predetermined temperature.
Preferably, the negative pressure releasing mechanism comprises an electromagnet and a sealing part associated with the electromagnet, and the electromagnet can drive the sealing part to move between a sealing position for sealing the steam channel and a conducting position for releasing the steam channel.
Preferably, the cooking appliance further comprises an electromagnetic valve, the electromagnetic valve is communicated with an air inlet of the air pump, and the air pump performs air extraction operation on the cooking space through the electromagnetic valve.
The invention also provides a pressure control method for the cooking appliance, which comprises the following steps:
after the cooking process enters a preset stage, controlling the air pump to perform air extraction operation on the cooking space;
maintaining the interior of the cooking space in a negative pressure state;
controlling the negative pressure releasing mechanism to perform negative pressure releasing operation; and
and controlling the air pump to perform next air extraction operation.
Preferably, the control device controls the air pump and the negative pressure release mechanism to cycle through the steps until the preset stage is finished or the duration of the preset stage reaches a preset duration.
According to the cooking appliance and the pressure control method for the cooking appliance, the control device is configured to control the negative pressure release mechanism to perform the negative pressure release operation before controlling the air pump to perform the air extraction operation every next time, so that a certain negative pressure state can be always kept in the cooking space, the generation of bacteria in the inner pot can be inhibited, the food can be kept fresh, and the situation that the cover cannot be opened due to the fact that the negative pressure value in the cooking space is too small can be prevented.
A series of concepts in a simplified form are introduced in the summary of the invention, which is described in further detail in the detailed description section. This summary is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter.
The advantages and features of the present invention are described in detail below with reference to the accompanying drawings.
Drawings
The following drawings of the invention are included to provide a further understanding of the invention. The drawings illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention. In the drawings, there is shown in the drawings,
fig. 1 is a simplified schematic diagram of pressure control related components of a cooking appliance according to a preferred embodiment of the present invention; and
fig. 2 is a flowchart illustrating a pressure control method for a cooking appliance according to a preferred embodiment of the present invention.
Detailed Description
In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art, that the present invention may be practiced without one or more of these specific details. In other instances, well-known features have not been described in order to avoid obscuring the invention.
In the following description, a detailed construction will be set forth in order to provide a thorough understanding of the present invention. It is apparent that embodiments of the invention are not limited to the specific details familiar to those skilled in the art. The following detailed description of preferred embodiments of the invention, however, the invention is capable of other embodiments in addition to those detailed.
Hereinafter, a cooking appliance according to a preferred embodiment of the present invention will be described with reference to the accompanying drawings. It is understood that the cooking appliance according to the present invention may have various functions such as cooking porridge, cooking soup, etc. in addition to the function of cooking rice. The cooking appliance according to the present invention has substantially the same structure as a conventional cooking appliance, and thus, for the sake of brevity, an overall schematic view of the cooking appliance is not shown herein, and only the differences will be described in detail below.
A cooking appliance generally includes a pot body and a lid. The cooker body is usually in a round-corner cuboid shape and is provided with an inner pot containing part in a cylindrical shape, and the inner pot can be freely placed into or taken out of the inner pot containing part so as to be convenient for cleaning the inner pot. The inner pot is generally made of a metal material and has a circular opening on an upper surface for containing a material to be heated, such as rice, soup, etc. The cooker body also comprises a heating device for heating the inner pot.
The cap body preferably includes an upper cap and an inner cap detachably coupled under the upper cap. The lid is preferably pivotally connected to the pot body and is capable of covering the pot body, with a cooking space being formed between the inner lid and the inner pot when the lid is covered on the pot body. The inner lid 1 can refer to fig. 1, and the inner lid 1 is provided with a steam passage 2, and the steam passage 2 communicates with the cooking space.
The cooking appliance further comprises control means, an air pump 5 and a solenoid valve 6 (only shown for simplicity). Preferably, an air pump 5 and a solenoid valve 6 are provided in the cover body, and an air inlet 7 of the air pump 5 may communicate with the cooking space through the solenoid valve 6. Controlling means is connected with air pump 5 and solenoid valve 6 electricity, and in the culinary art process, controlling means steerable air pump 5 is through 6 operations of bleeding to the culinary art space of solenoid valve to make the culinary art space be in the negative pressure state, and then can effectively keep the fresh and the taste of food. Since the structures of the air pump 5 and the solenoid valve 6 are known, they will not be described in detail herein for the sake of brevity.
With continued reference to fig. 1, the cooking appliance further includes a negative pressure release mechanism that can release negative pressure in the cooking space, thereby facilitating opening of the lid. The negative pressure releasing mechanism comprises an electromagnet 3 and a sealing part 4 connected with the electromagnet 3. The control device is electrically connected with the electromagnet 3. The electromagnet 3 can drive the sealing part 4 to move between a sealing position for sealing the steam channel 2 and a conducting position for releasing the steam channel 2) under the control of the control device. It will be appreciated that when the air pump 5 is pumping air to the cooking space, the sealing portion 4 is in a sealing position to ensure sealing of the cooking space. When the negative pressure state is to be released, the sealing part 4 needs to be moved to the conduction position to communicate the cooking space with the outside, so that the negative pressure state in the cooking space can be released, and the user can open the lid normally.
The pressure control method according to the present invention is described in detail below with reference to fig. 2.
When the cooking process enters a predetermined stage, the control device controls the air pump 5 to perform air pumping operation on the cooking space, and the air pumping operation lasts for a first predetermined time. Preferably, the first predetermined time period is 10S-5 min, of course, a person skilled in the art can set the first predetermined time period to other values according to the desired negative pressure value, the capacity of the inner pot and the like.
And when the air extraction operation reaches the first preset time, keeping the interior of the cooking space in a negative pressure state for a second preset time. Preferably, the second predetermined time period is 30min to 5 hours, but those skilled in the art can set the second predetermined time period to other values according to the tightness of the cooking appliance and the like. For example, in the case where the sealing property of the cooking appliance is good, the second predetermined period of time may be extended appropriately. Preferably, during the pressure maintaining period, the negative pressure value in the cooking space is-50 Kpa to-10 Kpa, and the mouthfeel and the nutritional index of the food cooked according to the scheme are better.
When the next air-extracting operation is intended, the control device controls the negative pressure releasing mechanism to perform the negative pressure releasing operation before the next air-extracting operation, namely, the control device controls the sealing part to move to the conducting position through the electromagnet, so that the proper amount of air enters the cooking space. The negative pressure releasing operation is continued for a third predetermined time period, which is less than the second predetermined time period, so that the cooking space is maintained in the negative pressure state. Preferably, the third predetermined time period is 3S to 20S, and of course, the third predetermined time period can be specifically set by a person skilled in the art according to actual situations.
After the negative pressure releasing operation is completed, the control device can control the air pump 5 to perform the next air pumping operation, which has been described above and will not be described herein again.
Preferably, the control means is configured to control the air pump 5 and the negative pressure release mechanism to cycle the above-described pressure control until the predetermined period ends or the predetermined period lasts for a preset period.
Preferably, the predetermined phase comprises a soak phase. Further preferably, the control means is configured to control the air pump 5 to start the above-mentioned air exhausting operation when the temperature in the cooking space reaches a predetermined temperature during the warming period. Preferably, the predetermined temperature is set between 65 ℃ and 78 ℃, for example, the control means may control the air pump 5 to start the above-mentioned air pumping operation when the temperature in the cooking space reaches about 70 ℃. In other preferred embodiments, the predetermined phase may also include other phases, such as when it is intended to vacuum-preserve food, etc.
According to the cooking appliance and the pressure control method for the cooking appliance, the control device is configured to control the negative pressure release mechanism to perform the negative pressure release operation before the air pump is controlled to perform the air pumping operation every next time, so that a certain negative pressure state can be always kept in the cooking space, the generation of bacteria in the inner pot can be inhibited, the food can be kept fresh, and the situation that the cover body cannot be opened due to the fact that the negative pressure value in the cooking space is too small due to multiple air pumping operations can be prevented.
It should be understood that only the preferred embodiments of the present invention have been described in detail above, the present invention is not limited to the above preferred embodiments, and those skilled in the art can make appropriate modifications and variations to the above embodiments.
The present invention has been described in terms of the above embodiments, but it should be understood that the above embodiments are for purposes of illustration and description only and are not intended to limit the invention to the scope of the described embodiments. Furthermore, it will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that many variations and modifications may be made in accordance with the teachings of the present invention, which variations and modifications fall within the scope of the present invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. A cooking appliance, characterized in that it comprises:
a pot body;
the inner pot is arranged in the pot body;
the cover body can be covered to the cooker body to form a cooking space between the cover body and the inner pot, and a steam channel for communicating the cooking space with the outside is arranged on the cover body;
the air inlet of the air pump is communicated with the cooking space;
a negative pressure release mechanism disposed at the steam channel to seal or release the steam channel; and
a control device configured to perform the following pressure control at a predetermined stage of a cooking process:
and controlling the air pump to perform air pumping operation on the cooking space, wherein the air pumping operation lasts for a first preset time, and the control device is configured to control the negative pressure release mechanism to perform negative pressure release operation before controlling the air pump to perform air pumping operation for each next time.
2. The cooking appliance of claim 1, wherein the control device is further configured to maintain the interior of the cooking space at a negative pressure for a second predetermined period of time after the pumping operation continues for the first predetermined period of time.
3. The cooking appliance of claim 2, wherein the negative pressure release operation lasts for a third predetermined length of time that is less than the second predetermined length of time.
4. The cooking appliance according to claim 2, wherein the control device is configured to control the air pump and the negative pressure release mechanism to cycle the pressure control until the predetermined period ends or the predetermined period lasts for a preset period.
5. The cooking appliance of claim 1, wherein the predetermined phase comprises a soak phase.
6. The cooking appliance according to claim 1, wherein the control means is configured to control the air pump to start the air-extracting operation when the temperature in the cooking space reaches a predetermined temperature.
7. The cooking appliance of claim 1, wherein the negative pressure release mechanism includes an electromagnet and a sealing portion associated with the electromagnet, the electromagnet being capable of driving the sealing portion to move between a sealing position sealing the steam channel and a conducting position releasing the steam channel.
8. The cooking appliance of claim 1, further comprising a solenoid valve in communication with an air inlet of the air pump, the air pump performing a pumping operation of the cooking space through the solenoid valve.
9. A pressure control method for a cooking appliance according to claim 1, characterized in that the method comprises the steps of:
after the cooking process enters a preset stage, controlling the air pump to perform air extraction operation on the cooking space;
maintaining the interior of the cooking space in a negative pressure state;
controlling the negative pressure releasing mechanism to perform negative pressure releasing operation; and
and controlling the air pump to perform next air extraction operation.
10. The method of claim 9, wherein the control device controls the air pump and the negative pressure release mechanism to cycle through the steps until the predetermined phase ends or the predetermined phase duration reaches a preset duration.
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| CN201811287789.8A CN111109998B (en) | 2018-10-31 | 2018-10-31 | Cooking appliance and pressure control method for cooking appliance |
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| CN201811287789.8A CN111109998B (en) | 2018-10-31 | 2018-10-31 | Cooking appliance and pressure control method for cooking appliance |
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| CN111109998B CN111109998B (en) | 2022-10-21 |
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| CN111109998B (en) | 2022-10-21 |
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