CN107048993B - Pressure cooker - Google Patents
Pressure cooker Download PDFInfo
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- CN107048993B CN107048993B CN201710352593.1A CN201710352593A CN107048993B CN 107048993 B CN107048993 B CN 107048993B CN 201710352593 A CN201710352593 A CN 201710352593A CN 107048993 B CN107048993 B CN 107048993B
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- pressure
- limiting valve
- pressure cooker
- cooker
- valve
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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
- A47J27/08—Pressure-cookers; Lids or locking devices specially adapted therefor
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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
- A47J27/08—Pressure-cookers; Lids or locking devices specially adapted therefor
- A47J27/0802—Control mechanisms for pressure-cookers
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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
- A47J36/00—Parts, details or accessories of cooking-vessels
- A47J36/32—Time-controlled igniting mechanisms or alarm devices
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- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Cookers (AREA)
Abstract
The invention provides a pressure cooker, which comprises a cover body, an exhaust pipe arranged on the cover body, and a pressure limiting valve, wherein the pressure limiting valve is sleeved at the exhaust port of the exhaust pipe and used for sealing or unsealing the exhaust port, and the pressure cooker also comprises: the limiting device is used for attracting the pressure limiting valve or disconnecting the attraction with the pressure limiting valve; and the controller controls the limiting device to suck the pressure limiting valve or disconnect the suction of the limiting device and the pressure limiting valve according to the current working parameters of the pressure cooker. The invention solves the problem of potential safety hazard caused by misoperation of the pressure limiting valve of the pressure cooker in the prior art, thereby improving the safety of the pressure cooker and avoiding scalding caused by misoperation of a user in the operation process of the pressure cooker.
Description
Technical Field
The invention relates to the technical field of kitchen appliances, in particular to a pressure cooker.
Background
The electric pressure cooker can perform high-pressure cooking, has the advantages of good cooking effect, energy conservation, high efficiency and the like, and becomes one of necessary electric appliances in a kitchen.
The working principle of the electric pressure cooker is that the pressure limiting valve is used for controlling the pressure in the cooker, so that the functions of pressure regulation and protection are achieved.
The first scheme is that the pressure limiting valve is shifted by hand to raise the pressure limiting valve for exhausting the gas from the exhaust pipe. The exhaust method has great potential safety hazard, the hand of a user directly contacts with the pressure limiting valve, and high-temperature steam exhausted by the exhaust pipe easily scalds the user. The second is to control the pressure limiting valve by an electromagnetic valve, and to lift the pressure limiting valve by a software program or a key to release the pressure in the cooker. Compared with the first scheme, the scheme has greatly improved safety, and the hands of a user are far away from the exhaust pipe when the user actively exhausts the air. However, the two schemes do not have a protection design aiming at the pressure limiting valve operated by the user by mistake, the pressure limiting valve in the two schemes can be randomly shifted, and if the pressure limiting valve is lifted by the user operated by mistake when the pressure cooker is operated, the exhaust pipe can instantly spray high-temperature steam to scald the user. In addition, the pressure cooker has no method for detecting whether the pressure limiting valve is positioned correctly, and the pressure in the pressure cooker is abnormal when a user neglects to install the pressure limiting valve or the position of the pressure limiting valve is incorrect.
Disclosure of Invention
In view of this, the embodiment of the present invention provides a pressure cooker, so as to solve the problem of potential safety hazard caused by misoperation of a pressure limiting valve of the pressure cooker in the prior art.
Therefore, the embodiment of the invention provides the following technical scheme:
the invention provides a pressure cooker, which comprises a cover body, an exhaust pipe arranged on the cover body, and a pressure limiting valve, wherein the pressure limiting valve is sleeved at an exhaust port of the exhaust pipe and is used for sealing or unsealing the exhaust port, and the pressure cooker also comprises: the limiting device is used for attracting the pressure limiting valve or disconnecting the attraction with the pressure limiting valve; and the controller controls the limiting device to suck the pressure limiting valve or disconnect the suction of the limiting device and the pressure limiting valve according to the current working parameters of the pressure cooker.
Optionally, the limiting device is an electromagnetic device, and the electromagnetic device is arranged below the pressure limiting valve.
Optionally, the operating parameter comprises air pressure and/or temperature; the pressure cooker further comprises: the air pressure sensor is used for acquiring the air pressure in the pressure cooker; and/or the temperature sensing device is used for acquiring the temperature inside the pressure cooker.
Optionally, the controller is further configured to obtain the air pressure from the air pressure sensor, control the limiting device to attract the pressure limiting valve when the air pressure is smaller than a first predetermined threshold, and control the limiting device to disconnect the attraction with the pressure limiting valve when the air pressure is greater than or equal to the first predetermined threshold; or when the temperature is less than a second preset threshold value, the limiting device is controlled to attract the pressure limiting valve, and when the temperature is greater than or equal to the second preset threshold value, the limiting device is controlled to be disconnected from attracting the pressure limiting valve.
Optionally, in a case that the pressure cooker is a manual exhaust type pressure cooker, when the operating parameter indicates that the operation is completed, the controller is configured to control the limiting device to disconnect the suction of the limiting valve.
Optionally, when the pressure cooker is a pressure cooker which uses a solenoid valve to control the pressure limiting valve to exhaust, the controller is used for controlling the limiting device to disconnect the suction of the limiting device and the pressure limiting valve before the solenoid valve is started.
Optionally, the method further comprises: the pressure sensor is used for acquiring the pressure between the limiting device and the pressure limiting valve; the controller is also used for judging the suction degree between the limiting device and the pressure limiting valve according to the pressure.
Optionally, the method further comprises: the alarm is used for receiving an alarm signal from the controller and carrying out alarm processing according to the alarm signal; wherein the controller generates the alarm signal when the suction between the limiting device and the pressure limiting valve is not completely closed.
The technical scheme of the embodiment of the invention has the following advantages:
the embodiment of the invention provides a pressure cooker, which comprises a cover body, an exhaust pipe arranged on the cover body, and a pressure limiting valve, wherein the pressure limiting valve is sleeved at the exhaust port of the exhaust pipe and used for sealing or unsealing the exhaust port, and the pressure cooker also comprises: the limiting device is used for attracting the pressure limiting valve or disconnecting the attraction with the pressure limiting valve, and for example, the limiting device can be an electromagnetic device; and the controller controls the limiting device to suck the pressure limiting valve or disconnect the suction of the limiting device and the pressure limiting valve according to the current working parameters of the pressure cooker. When the pressure cooker is in operation, the limiting device can firmly attract the pressure limiting valve to prevent the pressure limiting valve from being randomly shifted, and when the controller judges that the pressure cooker needs to exhaust, the limiting device is disconnected firstly and then the electromagnetic valve is opened or the user manually exhausts the air. The problem of among the prior art to the pressure-limiting valve of pressure cooker carry out the maloperation, lead to the potential safety hazard is solved to promote the security of pressure cooker, can not cause the scald because of user's maloperation at the pressure cooker operation in-process.
The embodiment of the invention provides a pressure cooker, which comprises: the pressure sensor is used for acquiring the pressure between the limiting device and the pressure limiting valve; the controller is also used for judging the suction degree between the limiting device and the pressure limiting valve according to the pressure, generating an alarm signal when the limiting device and the pressure limiting valve are not completely sucked, sending the alarm signal to an alarm, and giving an alarm by the alarm to prompt a user that the pressure cooker can normally operate only when the pressure limiting valve is detected to be correct by the electromagnetic device when the pressure cooker is started to operate.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic structural view of a pressure cooker according to an embodiment of the present invention;
FIG. 2 is a flow chart of pressure limiting valve malfunction protection according to an embodiment of the present invention;
fig. 3 is a flow chart of pressure limiting valve position determination according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In this embodiment, a pressure cooker is provided, and fig. 1 is a schematic structural diagram of a pressure cooker according to an embodiment of the present invention, as shown in fig. 1, the pressure cooker comprises a cover body (1), an exhaust pipe (2) arranged on the cover body (1), a pressure limiting valve (3), a limiting device (4) and a controller, wherein the controller can be positioned on the outer surface of the pressure cooker, connected to the limiting device (4) in a wired or wireless way, and also positioned at the far end of the pressure cooker, the pressure cooker is connected to the limiting device (4) in a wireless mode, the pressure limiting valve (3) is sleeved at the exhaust port (201) of the exhaust pipe (2) and used for sealing or unsealing the exhaust port (201), the limiting device (4) is also used for attracting the pressure limiting valve (3) or separating the attraction of the pressure limiting valve (3), and the controller controls the limiting device (4) to attract the pressure limiting valve (3) or separate the attraction of the pressure limiting valve (3) according to the current working parameters of the pressure cooker.
Through the pressure cooker further comprising the limiting device and the controller, the controller controls the limiting device to suck the pressure limiting valve or disconnect the suction of the limiting device and the pressure limiting valve according to the working parameters in the pressure cooker, compared with the pressure limiting valve of the pressure cooker in the prior art, the pressure limiting valve of the pressure cooker can be fluctuated randomly, scald may be caused by misoperation of the user during the operation of the pressure cooker, and the pressure cooker in the embodiment, a limit device is added under the pressure limiting valve, when the pressure cooker is in operation, the limit device can firmly attract the pressure limiting valve to prevent the pressure limiting valve from being randomly stirred, when the controller judges that the pressure cooker needs to exhaust, the limiting device is disconnected firstly and then the electromagnetic valve is opened or the user manually exhausts, thereby solving the problem of potential safety hazard caused by misoperation of the pressure limiting valve of the pressure cooker in the prior art, thereby the safety of the pressure cooker is improved, and scalding caused by misoperation of a user can be avoided in the operation process of the pressure cooker.
The limiting device has the main functions of attracting the pressure limiting valve or separating the attraction with the pressure limiting valve, so that the pressure limiting valve is not randomly stirred, the pressure limiting valve can be attracted under a certain condition, and a device for separating the attraction with the pressure limiting valve under another certain condition can be used as the limiting device.
When the working parameter is the air pressure, the pressure cooker also comprises an air pressure sensor used for acquiring the air pressure in the pressure cooker, when the air pressure acquired by the air pressure sensor is smaller than a first preset threshold value (the first preset threshold value can be flexibly adjusted according to actual conditions), the air pressure cooker does not need to exhaust at the moment, the controller controls the limiting device to suck the pressure limiting valve, when the air pressure acquired by the air pressure sensor is larger than or equal to the first preset threshold value, the pressure cooker is judged to exhaust at the moment, and the controller controls the limiting device to break the suction with the pressure limiting valve.
The pressure of the electric pressure cooker in the working process is jointly monitored by the pressure switch and the temperature sensing bulb, when the pressure in the cooker reaches a set value, the pressure switch is firstly disconnected, and when the software detects that the pressure switch is disconnected, the relay is correspondingly disconnected to stop heating. If the pressure switch is invalid, the temperature is judged by the temperature sensing bulb, and when the temperature in the cooker reaches a set protection value, the relay stops heating. Therefore, when the working parameter is the temperature, the pressure cooker further comprises a temperature sensing device for acquiring the temperature inside the pressure cooker, when the temperature acquired by the temperature sensing device is smaller than a second preset threshold (the second preset threshold can be flexibly adjusted according to actual conditions), the pressure cooker is judged not to be exhausted at the moment, the controller controls the limiting device to suck the pressure limiting valve, when the temperature acquired by the temperature sensing device is larger than or equal to the second preset threshold, the pressure cooker is judged to be exhausted at the moment, and the controller controls the limiting device to be disconnected from sucking the pressure limiting valve.
For the manual exhaust type electric pressure cooker, the pressure cooker has no exhaust requirement in the whole working process, and the user needs to manually exhaust after the pressure cooker is finished. Therefore, the electromagnetic device attracts and closes the pressure limiting valve when the pressure cooker starts to work, and after the work is finished, namely the procedure of cooking rice or cooking soup of the pressure cooker is completely finished, the pressure limiting valve is lifted, so that the protection effect can be achieved without influencing the normal procedure of the pressure cooker. For the pressure cooker which utilizes the electromagnetic valve to control the pressure limiting valve to exhaust, the phenomenon of multiple times of exhaust can occur in the working process of the pressure cooker, so that the controller needs to disconnect the electromagnetic device before judging the action of the electromagnetic valve, and the pressure limiting valve can exhaust normally. The specific process steps of the pressure limiting valve misoperation protection are shown in figure 2.
The pressure limiting valve has the most important function of protecting the pressure cooker from being over-pressurized, and when the pressure switch and the temperature sensing bulb are both out of work and the relay is kept constantly in suction for continuous heating, the high pressure in the cooker can jack the pressure limiting valve to exhaust, so that the pressure cooker is prevented from being exploded due to over-pressure. Therefore, the controller needs to strictly set the suction condition of the electromagnetic device, which can not only ensure that the pressure limiting valve can not be easily shifted by children, but also ensure that the pressure cooker controller can be jacked up by pressure to exhaust when the pressure cooker controller fails. Therefore, in an optional embodiment, the pressure control device further comprises a pressure acquisition unit for acquiring the pressure between the limiting device and the pressure limiting valve, and the controller judges the attraction degree between the limiting device and the pressure limiting valve according to the pressure, so that the controller can strictly set the current, the current can be calculated according to specific electromagnetic device parameters, for the electromagnetic device, the larger the current is, the larger the attraction force is, the smaller the current is, the smaller the attraction force is, the attraction stress is ensured not to be too large, and explosion caused by the fact that the pressure cooker cannot exhaust gas under extreme conditions is avoided.
When a user wants to enable the pressure cooker to start to operate normally only by detecting that the position of the pressure limiting valve is correct through the electromagnetic device, therefore, in an optional embodiment, the electromagnetic device can be used for detecting whether the pressure limiting valve is correctly installed, specifically, the controller judges the suction degree between the limiting device and the pressure limiting valve according to the pressure between the limiting device and the pressure limiting valve, so that whether the position of the pressure limiting valve is abnormal can be judged, when the pressure cooker just starts to operate, the controller judges that the position between the limiting device and the pressure limiting valve is not completely sucked, the abnormal position of the pressure limiting valve is explained, an alarm signal is generated at the moment, the generated alarm signal is sent to an alarm to alarm, and the user is prompted to put the pressure limiting valve to the correct position, specifically, the alarm can be a buzzer, a display and the like. The specific steps of the pressure limiting valve position determination process are shown in fig. 3.
In conclusion, the safety of the pressure cooker provided by the invention is improved, and scalding caused by misoperation of a user can be avoided in the operation process of the pressure cooker. Secondly, whether the position of the pressure limiting valve when the pressure cooker starts to operate is judged correctly.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (7)
1. The utility model provides a pressure cooker, includes the lid, sets up blast pipe, pressure limiting valve on the lid, wherein, the pressure limiting valve cover is established the gas vent department of blast pipe is used for right the gas vent seals or removes sealedly, its characterized in that, pressure cooker still includes:
the limiting device is used for attracting the pressure limiting valve or disconnecting the attraction with the pressure limiting valve;
the controller controls the limiting device to suck the pressure limiting valve or disconnect the suction of the limiting device and the pressure limiting valve according to the current working parameters of the pressure cooker;
the limiting device is an electromagnetic device which is arranged below the pressure limiting valve;
when the pressure cooker is in the operation process, the limiting device firmly attracts the pressure limiting valve to prevent the pressure limiting valve from being randomly shifted, and when the controller judges that the pressure cooker needs to exhaust, the limiting device is disconnected firstly and then the electromagnetic valve is opened or the user manually exhausts the air; the electromagnetic valve is used for controlling the pressure limiting valve to exhaust.
2. The pressure cooker of claim 1, wherein the operating parameter comprises air pressure and/or temperature; the pressure cooker further comprises:
the air pressure sensor is used for acquiring the air pressure in the pressure cooker; and/or the presence of a gas in the gas,
and the temperature sensing device is used for acquiring the temperature inside the pressure cooker.
3. The pressure cooker according to claim 2, wherein the controller is further configured to obtain the air pressure from the air pressure sensor, control the limiting device to engage the pressure limiting valve when the air pressure is less than a first predetermined threshold, and control the limiting device to disengage the engagement with the pressure limiting valve when the air pressure is greater than or equal to the first predetermined threshold; or when the temperature is less than a second preset threshold value, the limiting device is controlled to attract the pressure limiting valve, and when the temperature is greater than or equal to the second preset threshold value, the limiting device is controlled to be disconnected from attracting the pressure limiting valve.
4. The pressure cooker of claim 1, wherein the controller is configured to control the limiting device to disengage the engagement with the pressure limiting valve when the operating parameter indicates that the operation is completed in a case where the pressure cooker is a manually vented pressure cooker.
5. The pressure cooker according to any one of claims 1 to 4, wherein when the pressure cooker is a pressure cooker which uses a solenoid valve to control a pressure limiting valve to exhaust, the controller is configured to control the limiting device to disconnect the suction of the limiting valve before the solenoid valve is activated.
6. The pressure cooker of claim 1, further comprising:
the pressure sensor is used for acquiring the pressure between the limiting device and the pressure limiting valve; the controller is also used for judging the suction degree between the limiting device and the pressure limiting valve according to the pressure.
7. The pressure cooker of claim 6, further comprising:
the alarm is used for receiving an alarm signal from the controller and carrying out alarm processing according to the alarm signal; wherein the controller generates the alarm signal when the suction between the limiting device and the pressure limiting valve is not completely closed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710352593.1A CN107048993B (en) | 2017-05-18 | 2017-05-18 | Pressure cooker |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710352593.1A CN107048993B (en) | 2017-05-18 | 2017-05-18 | Pressure cooker |
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| CN107048993A CN107048993A (en) | 2017-08-18 |
| CN107048993B true CN107048993B (en) | 2020-07-17 |
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| CN201710352593.1A Active CN107048993B (en) | 2017-05-18 | 2017-05-18 | Pressure cooker |
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Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA3126261C (en) | 2017-08-09 | 2023-06-20 | Sharkninja Operating Llc | Cooking device and components thereof |
| CN108670151B (en) * | 2018-05-23 | 2022-02-18 | 佛山市顺德区美的洗涤电器制造有限公司 | Air pressure control method and device for drawer type dish washing machine and readable storage medium |
| USD914447S1 (en) | 2018-06-19 | 2021-03-30 | Sharkninja Operating Llc | Air diffuser |
| USD934027S1 (en) | 2018-08-09 | 2021-10-26 | Sharkninja Operating Llc | Reversible cooking rack |
| USD903413S1 (en) | 2018-08-09 | 2020-12-01 | Sharkninja Operating Llc | Cooking basket |
| USD883014S1 (en) | 2018-08-09 | 2020-05-05 | Sharkninja Operating Llc | Food preparation device |
| USD883015S1 (en) | 2018-08-09 | 2020-05-05 | Sharkninja Operating Llc | Food preparation device and parts thereof |
| US20190254476A1 (en) | 2019-02-25 | 2019-08-22 | Sharkninja Operating Llc | Cooking device and components thereof |
| CN212788226U (en) | 2019-02-25 | 2021-03-26 | 沙克忍者运营有限责任公司 | Cooking system |
| USD982375S1 (en) | 2019-06-06 | 2023-04-04 | Sharkninja Operating Llc | Food preparation device |
| USD918654S1 (en) | 2019-06-06 | 2021-05-11 | Sharkninja Operating Llc | Grill plate |
| CN110477744A (en) * | 2019-08-27 | 2019-11-22 | 九阳股份有限公司 | Failure protection method, electric heating class pressure means and the storage medium of pressure switch |
| CN110432765A (en) * | 2019-09-05 | 2019-11-12 | 珠海格力电器股份有限公司 | The operating pressure control method and system of a kind of electric cooker, electric cooker |
| US11647861B2 (en) | 2020-03-30 | 2023-05-16 | Sharkninja Operating Llc | Cooking device and components thereof |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH688419C1 (en) * | 1992-09-01 | 1999-09-30 | Heinrich Kuhn Metallwarenfabrik Ag | Safety valve for a vapor pressure cooker. |
| CN2311999Y (en) * | 1997-05-09 | 1999-03-31 | 蔡振耀 | Multi-insurance pressure cooker |
| JP3403080B2 (en) * | 1998-07-21 | 2003-05-06 | 三洋電機株式会社 | Pressure cooker |
| CN1566731A (en) * | 2003-07-03 | 2005-01-19 | 胡海荣 | Steam safety valve for pressure vessel |
| CN201001622Y (en) * | 2006-12-22 | 2008-01-09 | 岑玉群 | Magnetic pressure-limiting valve for electric pressure cooker |
| CN102670057B (en) * | 2012-05-24 | 2016-01-13 | 谢勇 | The electric pressure cooking saucepan that voltage limiting value is adjustable |
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