Cooking equipment
A mechanical pressure detection system in cooking devices addresses inaccuracy and high cost issues by using a variable and constant pressure chamber with a deformation member to accurately detect pressure changes, offering reliable and cost-effective pressure detection.
Patent Information
- Application Number
- CN202422349254.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-25
- Publication Date
- 2025-07-15
- Estimated Expiration
- 2034-09-25
AI Technical Summary
In existing cooking equipment, temperature sensors are used to detect the hysteresis and high cost problems in the cooking chamber pressure.
The mechanical pressure detection structure is adopted, including a transformer chamber, a constant pressure chamber, a deformation part, a detection switch and a switch trigger part. The deformation part deforms under the action of air pressure, and drives the switch trigger part to trigger the detection switch to achieve accurate detection of pressure in the cooking chamber.
The accuracy and cost reduction of pressure detection in the cooking chamber is achieved, and it is more reliable than the electronic pressure sensor.
Smart Images
Figure CN223095331U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of kitchen appliances, and particularly relates to a cooking device. Background Art
[0002] Cooking devices, such as rice cookers, include a pot body and a lid body. A cooking cavity is formed inside the pot body, and the lid body is configured to close or open the cooking cavity. When the rice cooker is working, the pressure inside the cooking cavity changes, and the pressure inside the cooking cavity is detected by a temperature sensor or a pressure sensor to achieve pressure control. The temperature sensor is a thermosensitive device, and the pressure measured by it inside the cooking cavity has a certain hysteresis. The detection accuracy of the pressure sensor is greatly affected by temperature and the cost is high.
[0003] The above information disclosed in this background art is only used to increase the understanding of the background art of this application. Therefore, it may include prior art that is not known to those of ordinary skill in the art. Summary of the Invention
[0004] Aiming at the problems pointed out in the background art, the utility model provides a cooking device, which improves the accuracy of pressure detection inside the cooking cavity and has a low cost.
[0005] To achieve the above utility model purpose, the utility model adopts the following technical solutions:
[0006] In some embodiments, a cooking device is provided, including:
[0007] A pot body with a cooking cavity formed inside;
[0008] A lid body connected to the pot body, and the lid body is configured to close or open the cooking cavity;
[0009] A pressure detection part arranged on the lid body, and the pressure detection part includes:
[0010] A variable pressure cavity communicating with the cooking cavity;
[0011] A constant pressure cavity communicating with the outside atmosphere;
[0012] A deformation part arranged between the variable pressure cavity and the constant pressure cavity, and the deformation part is configured to displace in a direction close to or away from the constant pressure cavity under the action of air pressure;
[0013] A detection switch;
[0014] A switch trigger part connected to the deformation part, and the switch trigger part is configured to displace along with the deformation part to trigger the detection switch.
[0015] In some embodiments, the detection switch is disposed at a side portion of the constant pressure chamber, the detection switch is disposed opposite to the deformation portion, the switch triggering portion is a triggering rod, one end of the triggering rod is connected to the deformation portion, and the other end is configured to trigger the detection switch.
[0016] In some embodiments, the pressure detection portion further includes a reset member configured to drive the deformation portion to reset.
[0017] In some embodiments, the reset member is a spring disposed between the deformation portion and the inner wall of the constant pressure chamber.
[0018] In some embodiments, the triggering rod passes through the spring.
[0019] In some embodiments, a first pipeline is provided on the cover body, one end of the first pipeline communicates with the variable pressure chamber, and the other end communicates with the cooking chamber.
[0020] In some embodiments, a second pipeline is provided on the cover body, one end of the second pipeline communicates with the constant pressure chamber, and the other end communicates with the outside atmosphere.
[0021] In some embodiments, the deformation portion is made of silica gel or rubber.
[0022] In some embodiments, the cooking device is a pressure rice cooker. When the pressure rice cooker performs positive pressure cooking, the pressure in the cooking chamber is positive pressure, and the deformation portion moves in a direction close to the constant pressure chamber under the action of the pressure in the variable pressure chamber.
[0023] In some embodiments, the cooking device is a pressure rice cooker. When the pressure rice cooker performs negative pressure cooking, the pressure in the cooking chamber is negative pressure, and the deformation portion moves in a direction away from the constant pressure chamber under the action of the pressure in the constant pressure chamber.
[0024] Compared with the prior art, the advantages and positive effects of the present utility model are:
[0025] The cooking device of the present disclosure realizes the pressure detection in the cooking chamber through the pressure detection portion. The pressure detection portion includes a variable pressure chamber, a constant pressure chamber, a deformation portion, a detection switch, and a switch triggering portion. The deformation portion deforms under the action of air pressure to displace in a direction close to or away from the constant pressure chamber. The deformation portion drives the switch triggering portion to move synchronously. When the pressure in the cooking chamber reaches a rated value, the switch triggering portion triggers the detection switch to realize the pressure detection. The pressure detection portion is a mechanical pressure detection structure, which has a lower cost and higher reliability compared with the electronic pressure detection structure of a pressure sensor and a temperature sensor.
[0026] After reading the specific embodiments of the present utility model in conjunction with the accompanying drawings, other features and advantages of the present utility model will become clearer. Description of the Drawings
[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the accompanying drawings required for use in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can also be obtained based on these drawings.
[0028] Figure 1 A structural diagram of a cooking device according to some embodiments;
[0029] Figure 2 is Figure 1 An enlarged view of part A in;
[0030] Figure 3 A schematic diagram of a detection switch according to some embodiments;
[0031] Reference Numerals:
[0032] 100, cooking pot body; 110, inner pot; 120, cooking cavity;
[0033] 200, lid body;
[0034] 300, pressure detection part; 310, pressure transformation cavity; 320, constant pressure cavity; 330, deformation part; 340, switch trigger part; 341, trigger rod; 342, first contact; 350, detection switch; 351, second contact; 352, third contact; 360, reset part;
[0035] 410, first pipeline; 420, second pipeline;
[0036] 510, first temperature sensor; 520, second temperature sensor. Specific Embodiments
[0037] The following will clearly and completely describe the technical solutions in the embodiments of the present application in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, rather than all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present application.
[0038] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present application.
[0039] The terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.
[0040] In the description of the present application, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected" and "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.
[0041] In the present utility model, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "below" and "beneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.
[0042] The following disclosure provides many different embodiments or examples for implementing different structures of the present utility model. To simplify the disclosure of the present utility model, the components and settings of specific examples are described below. Of course, they are only examples and are not intended to limit the present utility model. In addition, the present utility model may repeat reference numerals and / or reference letters in different examples. Such repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present utility model provides examples of various specific processes and materials, but those of ordinary skill in the art can be aware of the application of other processes and / or the use of other materials.
[0043] In some embodiments, a cooking device, such as a rice cooker, is provided. Referring to Figure 1 and Figure 2 , the cooking device includes a pot body 100 and a lid body 200. A cooking cavity 120 is formed in the pot body 100. The lid body 200 is connected to the pot body 100, and the lid body 200 is configured to close or open the cooking cavity 120.
[0044] The cooking device further includes a pressure detection unit 300, and the pressure detection unit 300 is disposed on the lid body 200. The pressure detection unit 300 is configured to detect the pressure inside the cooking cavity 120.
[0045] The pressure detection unit 300 includes a pressure transformation cavity 310, and the pressure transformation cavity 310 is in communication with the cooking cavity 120. The pressure inside the pressure transformation cavity 310 changes with the change of the pressure inside the cooking cavity 120.
[0046] The pressure detection unit 300 includes a constant pressure cavity 320, and the constant pressure cavity 320 is in communication with the outside atmosphere. The pressure inside the constant pressure cavity 320 is constant.
[0047] The pressure detection unit 300 includes a deformation part 330. The deformation part 330 is disposed between the pressure transformation cavity 310 and the constant pressure cavity 320. The deformation part 330 is configured to deform under the action of air pressure and displace in a direction close to or away from the constant pressure cavity 320.
[0048] The pressure detection unit 300 includes a detection switch 350 and a switch trigger part 340. The switch trigger part 340 is connected to the deformation part 330, and the switch trigger part 340 is configured to displace with the deformation part 330 to trigger the detection switch 350.
[0049] When the cooking device performs positive-pressure cooking, the pressure in the cooking cavity 120 is positive pressure, and the pressure in the pressure-changing cavity 310 is greater than the pressure in the constant-pressure cavity 320. At this time, the deformation part 330 deforms and displaces in the direction close to the constant-pressure cavity 320 under the pressure of the pressure-changing cavity 310. As the pressure in the pressure-changing cavity 310 continuously increases, the deformation part 330 continuously deforms and displaces in the direction close to the constant-pressure cavity 320. The deformation part 330 drives the switch trigger part 340 to move synchronously, and one end of the deformation part 330 moves in the direction close to the detection switch 350. When the positive pressure in the cooking cavity 120 reaches the first rated value, the switch trigger part 340 triggers the detection switch 350 to achieve positive-pressure detection.
[0050] When the cooking device performs negative-pressure cooking, the pressure in the cooking cavity 120 is negative pressure, and the pressure in the constant-pressure cavity 320 is greater than the pressure in the pressure-changing cavity 310. At this time, the deformation part 330 deforms and displaces in the direction away from the constant-pressure cavity 320 under the pressure of the constant-pressure cavity 320. As the negative pressure in the pressure-changing cavity 310 continuously increases, the deformation part 330 continuously deforms and displaces in the direction away from the constant-pressure cavity 320. The deformation part 330 drives the switch trigger part 340 to move synchronously, and one end of the deformation part 330 moves in the direction away from the detection switch 350. When the negative pressure in the cooking cavity 120 reaches the second rated value, the switch trigger part 340 triggers the detection switch 350 to achieve negative-pressure detection.
[0051] The cooking device of the present disclosure realizes the pressure detection in the cooking cavity 120 through the pressure detection part 300. The pressure detection part 300 includes a pressure-changing cavity 310, a constant-pressure cavity 320, a deformation part 330, a detection switch 350, and a switch trigger part 340. The deformation part 330 deforms under the action of air pressure to displace in the direction close to or away from the constant-pressure cavity 320. The deformation part 330 drives the switch trigger part 340 to move synchronously. When the pressure in the cooking cavity 120 reaches the rated value, the switch trigger part 340 triggers the detection switch 350 to achieve pressure detection. The pressure detection part 300 is a mechanical pressure detection structure, which has a lower cost and higher reliability compared with the electronic pressure detection structures of pressure sensors and temperature sensors.
[0052] In some embodiments, the detection switch 350 is arranged on the side of the constant-pressure cavity 320, the detection switch 350 is arranged opposite to the deformation part 330, the switch trigger part 340 is a trigger rod 341, one end of the trigger rod 341 is connected to the deformation part 330, and the other end is configured to trigger the detection switch 350.
[0053] Refer to Figure 3 , one end of the trigger rod 341 extends into the detection switch 350, and a first contact 342 is arranged at the end of the trigger rod 341.
[0054] The detection switch 350 is provided with a second contact 351, and the first contact 342 is located on the side away from the constant pressure chamber 320. When the cooking device performs positive pressure cooking, as the pressure in the cooking chamber 120 increases, the deformation part 330 deforms and displaces towards the direction close to the constant pressure chamber 320, driving the trigger rod 341 to move towards the direction close to the second contact 351. When the pressure in the cooking chamber 120 increases to the first rated value, the first contact 342 contacts the second contact 351 to achieve positive pressure detection.
[0055] The detection switch 350 is provided with a third contact 352, and the third contact 352 is located on the side close to the constant pressure chamber 320. The second contact 351 and the third contact 352 are arranged at intervals along the movement direction of the trigger rod 341. When the cooking device performs negative pressure cooking, as the pressure in the cooking chamber 120 increases, the deformation part 330 deforms and displaces towards the direction away from the constant pressure chamber 320, driving the trigger rod 341 to move towards the direction close to the third contact 352. When the pressure in the cooking chamber 120 increases to the second rated value, the first contact 342 contacts the third contact 352 to achieve negative pressure detection.
[0056] In some embodiments, the cooking device is a pressure rice cooker. When the pressure rice cooker performs positive pressure cooking, the pressure in the cooking chamber 120 is positive pressure. The deformation part 330 moves towards the direction close to the constant pressure chamber 320 under the pressure of the pressure change chamber 310. When the positive pressure in the cooking chamber 120 reaches the first rated value, the switch trigger part 340 triggers the detection switch 350 to achieve positive pressure detection.
[0057] In some embodiments, the cooking device is a pressure rice cooker. When the pressure rice cooker performs negative pressure cooking, the pressure in the cooking chamber 120 is negative pressure. The deformation part 330 moves towards the direction away from the constant pressure chamber 320 under the pressure of the constant pressure chamber 320. When the negative pressure in the cooking chamber 120 reaches the second rated value, the switch trigger part 340 triggers the detection switch 350 to achieve negative pressure detection.
[0058] In some embodiments, referring to Figure 2 , the pressure detection part 300 further includes a reset member 360, and the reset member 360 is configured to drive the deformation part 330 to reset to prepare for the next pressure detection.
[0059] In some embodiments, the reset member 360 is a spring.
[0060] In some embodiments, the reset member 360 is arranged between the deformation part 330 and the inner wall of the constant pressure chamber 320, and the trigger rod 341 passes through the spring, with a compact structure.
[0061] In some embodiments, referring to Figure 1 and Figure 2, a first pipeline 410 is provided on the cover body 200. The first pipeline 410 extends and routes inside the cover body 200. One end of the first pipeline 410 communicates with the pressure transformation cavity 310, and the other end communicates with the cooking cavity 120.
[0062] For example, the first pipeline 410 is a flexible pipe. The first pipeline 410 extends and routes reasonably according to the internal space structure of the cover body 200 to make full use of the internal space of the cover body 200, which helps to make the structure more compact. When assembling the cover body 200, after installing the pressure detection part 300 on the cover body 200, the pressure transformation cavity 310 is butted and communicated with one end of the first pipeline 410.
[0063] In some embodiments, a second pipeline 420 is provided on the cover body 200. The second pipeline 420 extends and routes inside the cover body 200. One end of the second pipeline 420 communicates with the constant pressure cavity 320, and the other end communicates with the outside atmosphere.
[0064] For example, the second pipeline 420 is a flexible pipe. The second pipeline 420 extends and routes reasonably according to the internal space structure of the cover body 200 to make full use of the internal space of the cover body 200, which helps to make the structure more compact. When assembling the cover body 200, after installing the pressure detection part 300 on the cover body 200, the constant pressure cavity 320 is butted and communicated with one end of the second pipeline 420.
[0065] In some embodiments, the deformation part 330 is made of silica gel or rubber, with low cost and reliable structure.
[0066] In some embodiments, the cooking pot body 100 includes an inner pot 110, and the inner pot 110 forms a cooking cavity 120.
[0067] The cover body 200 is provided with a first temperature sensor 510 on the side facing the cooking cavity 120. For example, the first temperature sensor 510 is an NTC, which detects the temperature in the cooking cavity 120.
[0068] The bottom of the inner pot 110 is provided with a second temperature sensor 520. For example, the second temperature sensor 520 is an NTC, which detects the temperature in the cooking cavity 120.
[0069] By detecting the upper and lower temperatures of the cooking cavity 120 and combining with the cooking program, it helps to improve the cooking temperature control accuracy and the cooking effect.
[0070] In the description of the above embodiments, the specific features, structures, materials or characteristics can be combined in a suitable manner in any one or more embodiments or examples.
[0071] The above are only the specific embodiments of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present utility model should be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.
Claims
1. A cooking device, comprising: A pot body, with a cooking cavity formed inside; A lid body, connected to the pot body, and the lid body is configured to close or open the cooking cavity; Characterized in that, the cooking device further comprises a pressure detection part, which is arranged on the lid body, and the pressure detection part includes: A pressure-changing cavity, communicating with the cooking cavity; A constant-pressure cavity, communicating with the outside atmosphere; A deformation part, arranged between the pressure-changing cavity and the constant-pressure cavity, and the deformation part is configured to displace in a direction close to or away from the constant-pressure cavity under the action of air pressure; A detection switch; A switch triggering part, connected to the deformation part, and the switch triggering part is configured to displace with the deformation part to trigger the detection switch.
2. The cooking device according to claim 1, characterized in that, The detection switch is arranged on the side of the constant-pressure cavity, the detection switch is arranged opposite to the deformation part, the switch triggering part is a triggering rod, one end of the triggering rod is connected to the deformation part, and the other end is configured to trigger the detection switch.
3. The cooking device according to claim 2, characterized in that, The pressure detection part further comprises a reset part, and the reset part is configured to drive the deformation part to reset.
4. The cooking device according to claim 3, characterized in that, The reset part is a spring, and the spring is arranged between the deformation part and the inner wall of the constant-pressure cavity.
5. The cooking device according to claim 4, characterized in that, The triggering rod passes through the spring.
6. The cooking device according to any one of claims 1 to 5, characterized in that, A first pipeline is arranged on the lid body, one end of the first pipeline communicates with the pressure-changing cavity, and the other end communicates with the cooking cavity.
7. The cooking device according to any one of claims 1 to 5, characterized in that, A second pipeline is arranged on the lid body, one end of the second pipeline communicates with the constant-pressure cavity, and the other end communicates with the outside atmosphere.
8. The cooking device according to any one of claims 1 to 5, characterized in that, The deformation part is made of silica gel or rubber.
9. The cooking device according to any one of claims 1 to 5, characterized in that, The cooking device is a pressure rice cooker. When the pressure rice cooker performs positive-pressure cooking, the pressure in the cooking cavity is positive pressure, and the deformation part moves in a direction close to the constant-pressure cavity under the action of the pressure in the pressure-changing cavity.
10. The cooking device according to any one of claims 1 to 5, characterized in that, The cooking device is a pressure rice cooker. When the pressure rice cooker performs negative-pressure cooking, the pressure in the cooking cavity is negative pressure, and the deformation part moves in a direction away from the constant-pressure cavity under the action of the pressure in the constant-pressure cavity.