Pressure cooker pressure regulating method and pressure regulating device

Abstract

The present invention provides a pressure regulating method and device for a pressure cooker. The method comprises: selecting the pressure condition of the pressure cooker; rotating a pressure regulating metal head using a pressure regulating knob until the height between the top and bottom surfaces of a metal bracket supported by the pressure regulating metal head matches the pressure condition; forcing a spring element of a pressure switch to deform during movement of a heating plate during operation of the pressure cooker until the spring element deformation matches the pressure condition, disconnecting the pressure switch. The device comprises: a metal bracket in contact with a switch contact, and a pressure regulating mechanism penetrating the metal bracket; the pressure regulating mechanism comprises a pressure regulating metal head and a pressure regulating body, the pressure regulating metal head being located between the bottom and top surfaces of the metal bracket, and supporting the top surface of the metal bracket; the bottom surface of the metal bracket being mounted on the heating plate, and the switch contact contacting the top surface of the metal bracket. The present invention uses the pressure regulating metal head of the pressure regulating mechanism to adjust the height between the top and bottom surfaces of the metal bracket to achieve the purpose of changing the pressure value.

Description

Technical Field

[0001] The present invention relates to the field of cooking utensils, and in particular to a pressure regulating method and a pressure regulating device for a pressure cooker. Background Art

[0002] A pressure cooker seals water. The vapor generated by the heated water evaporates and remains within the cooker, raising the internal pressure above atmospheric pressure. This creates a pressurized environment. Existing pressure cookers typically use multiple pressure switches to achieve multi-stage pressure control. Typically, one pressure switch controls the low pressure of the pressure cooker, another controls the high pressure, and the pressures between the low and high pressures are controlled by a program. This pressure control method is only accurate for the low and high pressures. Pressure values ​​controlled by the program differ from those measured by a pressure gauge, resulting in a certain degree of uncertainty.

[0003] How to use a pressure switch to achieve the accuracy of multiple pressure values ​​has become a difficult problem that needs to be solved urgently by those skilled in the art. Summary of the Invention

[0004] The present invention aims to provide a pressure regulating method and device for a pressure cooker, wherein a pressure regulating metal head is used to adjust the heights of the top and bottom surfaces of a metal bracket. The change in the height between the top and bottom surfaces causes the switch contacts to move up and down, thereby causing the switch spring of the switch body to undergo different deformations, thereby achieving the purpose of changing the pressure value.

[0005] The technical solutions for achieving the purpose of the present invention are as follows:

[0006] In one aspect, the present invention provides a method for regulating pressure in a pressure cooker, comprising:

[0007] Select the pressure condition of the pressure cooker, which includes micro pressure, low pressure, standard pressure or high pressure;

[0008] Rotate the pressure regulating metal head by the pressure regulating knob until the height between the top and bottom surfaces of the metal bracket supported by the pressure regulating metal head matches the pressure condition;

[0009] When the pressure cooker is working, the movement of the heating plate forces the spring of the pressure switch to deform. The spring deformation is different under different pressure conditions. The pressure switch is disconnected until the spring deformation is adapted to the pressure condition.

[0010] In a possible implementation, the corresponding relationship between the pressure condition and the pressure cooker is:

[0011] Micro pressure, low pressure, standard pressure and high pressure each correspond to a pressure value, and the pressure values ​​of micro pressure, low pressure, standard pressure and high pressure gradually increase;

[0012] The height of the pressure regulating metal head corresponding to micro pressure, low pressure, standard pressure and high pressure gradually decreases.

[0013] In a possible implementation, the heating plate moves as follows:

[0014] When there is pressure in the pressure cooker, the heating plate moves towards the spring;

[0015] During the movement of the heating plate, the switch contacts of the pressure switch are forced to move in the same direction as the heating plate, and the switch contacts drive the spring to deform;

[0016] The spring deforms until the pressure in the pressure cooker reaches the set pressure value corresponding to the pressure condition, and the pressure switch is disconnected;

[0017] The control program receives the pressure switch disconnect signal, and the control program controls the heating plate to stop heating to control the pressure in the pot.

[0018] In another aspect, the present invention provides a pressure regulating device for a pressure cooker, for regulating the pressure value of a pressure switch, wherein the pressure switch comprises a switch body and a switch contact, the switch body and the switch contact being electrically connected, and the pressure regulating device for a pressure cooker comprises: a metal bracket in contact with the switch contact, and a pressure regulating mechanism penetrating the metal bracket;

[0019] The voltage regulating mechanism includes a voltage regulating metal head and a voltage regulating body, wherein the voltage regulating metal head is located between the bottom surface and the top surface of the metal bracket, and the voltage regulating metal head supports the top surface of the metal bracket;

[0020] The bottom surface of the metal bracket is installed on the heating plate, the switch contact contacts the top surface of the metal bracket, and the voltage regulating body adjusts the position of the voltage regulating metal head to achieve height adjustment between the top and bottom surfaces of the metal bracket.

[0021] In a possible implementation, the metal bracket includes a bottom plate, a top plate, and a vertical plate, the bottom plate and the top plate are both connected to the vertical plate, and the bottom plate is connected to the heating plate;

[0022] The top plate is in contact with the switch contacts, the voltage regulating metal head is located between the top plate and the bottom plate, and the voltage regulating metal head is in contact with both the top plate and the bottom plate;

[0023] The voltage regulating body passes through the vertical plate and is connected to the voltage regulating metal head, and the voltage regulating body supports the top plate.

[0024] In a possible implementation, the voltage-regulating metal head includes a polygonal body and a columnar body, the columnar body connects the polygonal body and the voltage-regulating body, and the polygonal body supports the top plate of the metal bracket;

[0025] The vertical height value of the polygon is a variable value. The polygons with different height values ​​cause the height of the spring in the switch body corresponding to the switch contact to change.

[0026] In a possible implementation, an escape space for accommodating the columnar body is provided on the metal bracket, and a gap exists between the columnar body and a top surface of the escape space.

[0027] In one possible implementation, the voltage regulating body includes a voltage regulating rod and a polygonal knob, one end of the voltage regulating rod is connected to the columnar body of the voltage regulating metal head, and the other end of the voltage regulating rod is fixedly connected to the polygonal knob;

[0028] The vertical height value of the polygon knob is also a variable value.

[0029] In a possible implementation, the voltage-regulating metal head is a plate-shaped member, and a plurality of parallel voltage-regulating protrusions are provided on the voltage-regulating metal head, and the plurality of voltage-regulating protrusions have different heights;

[0030] When one voltage regulating protrusion faces the switch contact, the remaining voltage regulating protrusion is located outside the metal bracket;

[0031] The voltage regulating body pushes the voltage regulating metal head to translate so that any voltage regulating protrusion can be located directly below the switch contact.

[0032] In a possible implementation, a voltage-regulating protrusion faces the switch contact, and the voltage-regulating protrusion is located between the top surface and the bottom surface of the metal bracket.

[0033] In a possible implementation, the plurality of pressure-regulating protrusions include a third low-pressure protrusion, a second low-pressure protrusion, a first low-pressure protrusion, a standard pressure protrusion, a first high-pressure protrusion, and a second high-pressure protrusion;

[0034] The third low-pressure bulge, the second low-pressure bulge, the first low-pressure bulge, the standard pressure bulge, the first high-pressure bulge, and the second high-pressure bulge are distributed from left to right in sequence;

[0035] The height values ​​of the third low-pressure protrusion, the second low-pressure protrusion, the first low-pressure protrusion, the standard pressure protrusion, the first high-pressure protrusion and the second high-pressure protrusion decrease in sequence.

[0036] In a possible implementation, the voltage regulating body includes a voltage regulating plate and a voltage regulating handle, one end of the voltage regulating plate is connected to the voltage regulating metal head, and the other end of the voltage regulating plate is connected to the voltage regulating handle;

[0037] The pressure regulating plate includes a first transverse plate, a second transverse plate and a vertical plate, wherein there is a height difference between the first transverse plate and the second transverse plate, the vertical plate connects the first transverse plate and the second transverse plate, and the vertical plate is located between the first transverse plate and the second transverse plate;

[0038] The first transverse plate contacts the voltage regulating metal head, and the second transverse plate contacts the voltage regulating handle.

[0039] Compared with the prior art, the present invention has the following beneficial effects:

[0040] The present invention adopts the pressure regulating metal head of the pressure regulating mechanism to adjust the height values ​​of the top and bottom surfaces of the metal bracket. The change in the height value between the top and bottom surfaces causes the switch contacts to move up and down, and the switch spring of the switch body to undergo different deformations, thereby achieving the purpose of changing the pressure value. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 A flow chart of the pressure regulating method for a pressure cooker provided by the present invention;

[0042] Figure 2 Schematic diagram of the pressure cooker pressure regulating device provided by the present invention Figure 1 ;

[0043] Figure 3 Schematic diagram of the pressure cooker pressure regulating device provided by the present invention Figure 2 ;

[0044] Figure 4 Schematic diagram of the pressure cooker pressure regulating device provided by the present invention Figure 3 ;

[0045] Figure 5 Schematic diagram of the pressure cooker pressure regulating device provided by the present invention Figure 4 ;

[0046] Figure 6 Schematic diagram of the structure of the metal bracket;

[0047] Figure 7 It is a structural diagram of the pressure regulating metal head and the pressure regulating rod;

[0048] Figure 8 This is a schematic diagram of the polygonal structure in the voltage regulating metal head;

[0049] Figure 9 Schematic diagram of the polygonal knob structure;

[0050] Figure 10 Schematic diagram of the pressure cooker pressure regulating device provided by the present invention Figure 5 ;

[0051] Figure 11 It is a structural schematic diagram of the plate-like member, the pressure regulating protrusion and the pressure regulating plate;

[0052] In the figure, 1-pressure cooker; 2-heating plate; 3-pressure switch; 31-switch contact; 32-spring; 4-metal bracket; 41-bottom plate; 42-top plate; 43-vertical plate; 44-avoidance space; 5-pressure regulating metal head; 51-polygonal body; 52-columnar body; 6-pressure regulating body; 61-pressure regulating rod; 62-polygonal knob; 63-plate-shaped member; 64-pressure regulating protrusion; 65-pressure regulating plate; 651-first horizontal plate; 652-second horizontal plate; 653-vertical plate; 66-pressure regulating handle. DETAILED DESCRIPTION

[0053] The present invention is described in detail below with reference to the various embodiments shown in the accompanying drawings, but it should be noted that these embodiments are not limitations of the present invention, and any equivalent transformations or substitutions in functions, methods, or structures made by ordinary technicians in this field based on these embodiments are all within the scope of protection of the present invention.

[0054] In the description of this embodiment, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the invention 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 therefore cannot be understood as a limitation on the invention.

[0055] Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature identified with "first," "second," etc., may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0056] The terms "mounted," "connected," and "connected" should be understood broadly. For example, they can refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in the present invention based on specific circumstances.

[0057] Existing pressure cookers typically use a single pressure switch, typically set to a single pressure value and not adjustable (or selectable). However, some products utilize a time-delayed power-off method after the pressure switch disconnects to achieve multiple pressure levels. This simple control method has several drawbacks. First, it's unsafe. The pressure value after the delay can vary significantly under different conditions, even exceeding the specified value, potentially creating a dangerous situation. Existing pressure cookers also use two pressure switches, typically using one pressure switch for low pressure and another for high pressure. Pressures between these two values ​​are controlled by a program (disconnecting the low pressure value with a different delay). This method offers better control, but only two pressure values ​​are accurate and controllable, leaving the remaining values ​​uncertain. While this approach is better than the previous one, it also significantly increases costs. Regarding the second approach, achieving multiple pressure levels is relatively reliable, with one pressure switch corresponding to each pressure value, but this approach is also costly. As can be seen above, our new approach achieves multiple pressure levels without adding numerous pressure switches (and is truly reliable).

[0058] See also Figure 1 , an embodiment of the present invention provides a pressure cooker pressure regulating method, comprising:

[0059] Select the pressure condition of the pressure cooker, which includes micro pressure, low pressure, standard pressure or high pressure;

[0060] Rotate the pressure regulating metal head by the pressure regulating knob until the height between the top and bottom surfaces of the metal bracket supported by the pressure regulating metal head matches the pressure condition;

[0061] When the pressure cooker is working, the movement of the heating plate forces the spring of the pressure switch to deform. The spring deformation is different under different pressure conditions. The pressure switch is disconnected until the spring deformation is adapted to the pressure condition.

[0062] Based on the above pressure cooker pressure regulation method, the corresponding relationship between the pressure condition and the pressure cooker is:

[0063] Micro pressure, low pressure, standard pressure and high pressure each correspond to a pressure value, and the pressure values ​​of micro pressure, low pressure, standard pressure and high pressure gradually increase;

[0064] The height of the pressure regulating metal head corresponding to micro pressure, low pressure, standard pressure and high pressure gradually decreases.

[0065] Based on the above pressure cooker pressure regulation method, the heating plate moves as follows:

[0066] When there is pressure in the pressure cooker, the heating plate moves towards the spring;

[0067] During the movement of the heating plate, the switch contacts of the pressure switch are forced to move in the same direction as the heating plate, and the switch contacts drive the spring to deform;

[0068] The spring deforms until the pressure in the pressure cooker reaches the set pressure value corresponding to the pressure condition, and the pressure switch is disconnected;

[0069] The control program receives the pressure switch disconnect signal, and the control program controls the heating plate to stop heating to control the pressure in the pot.

[0070] See also Figures 2 to 11 The embodiment of the present invention further provides a pressure regulating device for a pressure cooker 1, which is used to adjust the pressure value of a pressure switch 3. The pressure switch 3 includes a switch body and a switch contact 31. The switch body and the switch contact 31 are electrically connected. The pressure regulating device for the pressure cooker 1 includes: a metal bracket 4 in contact with the switch contact 31, and a pressure regulating mechanism penetrating the metal bracket 4; the pressure regulating mechanism includes a pressure regulating metal head 5 and a pressure regulating body 6. The pressure regulating metal head 5 is located between the bottom and top surfaces of the metal bracket 4, and the pressure regulating metal head 5 supports the top surface of the metal bracket 4; the bottom surface of the metal bracket 4 is mounted on the heating plate 2, the switch contact 31 contacts the top surface of the metal bracket 4, and the pressure regulating body 6 adjusts the position of the pressure regulating metal head 5 to achieve height adjustment between the top and bottom surfaces of the metal bracket 4.

[0071] In the embodiment of the present invention, the pressure regulating metal head 5 of the pressure regulating mechanism is used to adjust the height values ​​of the top and bottom surfaces of the metal bracket 4. The change in the height value between the top and bottom surfaces causes the switch contact 31 to move up and down, and the switch spring 32 of the switch body to undergo different deformations, thereby achieving the purpose of changing the pressure value.

[0072] Please continue reading Figures 2 to 9 The metal bracket 4 preferably includes a bottom plate 41, a top plate 42 and a vertical plate 43. The bottom plate 41 and the top plate 42 are both connected to the vertical plate 43, and the bottom plate 41 is connected to the heating plate 2; the top plate 42 is in contact with the switch contact 31, and the voltage-regulating metal head 5 is located between the top plate 42 and the bottom plate 41. The voltage-regulating metal head 5 is in contact with both the top plate 42 and the bottom plate 41; the voltage-regulating body 6 passes through the vertical plate 653 and is connected to the voltage-regulating metal head 5, and the voltage-regulating body 6 supports the top plate 42.

[0073] The bracket of the embodiment of the present invention is used to fix the voltage-regulating metal head 5. The voltage-regulating metal head 5 has no resistance or little resistance when moving (for example, the polygon rotates smoothly. If the contact directly contacts the polygon, it is not easy to rotate and is easy to get stuck).

[0074] Please continue reading Figures 2 to 9 Preferably, the voltage-regulating metal head 5 includes a polygonal body 51 and a columnar body 52. ​​The columnar body 52 connects the polygonal body 51 and the voltage-regulating body 6. The polygonal body 51 supports the top plate 42 of the metal bracket 4. The vertical height value of the polygonal body 51 is a variable value. The polygonal bodies 51 with different height values ​​cause the height of the spring 32 in the switch body corresponding to the switch contact 31 to change.

[0075] The polygonal body 51 of the embodiment of the present invention has the following functions: 1. When rotating, the vertical height of the polygon changes, which can change the height of the spring 32; 2. After the height of the spring 32 changes, the position of the contact of the pressure switch 3 can be driven to change, thereby changing the pressure value controlled by the pressure switch 3.

[0076] Please continue reading Figures 2 to 9 Preferably, the metal bracket 4 is provided with an escape space 44 for accommodating the columnar body 52 , and there is a gap between the columnar body 52 and the top surface of the escape space 44 .

[0077] Please continue reading Figures 2 to 9 Preferably, the pressure regulating body 6 includes a pressure regulating rod 61 and a polygonal knob 62. One end of the pressure regulating rod 61 is connected to the columnar body 52 of the pressure regulating metal head 5, and the other end of the pressure regulating rod 61 is fixedly connected to the polygonal knob 62; the vertical height value of the polygonal knob 62 is also a variable value.

[0078] Please continue reading Figures 2 to 9 The polygonal knob 62 of the embodiment of the present invention corresponds to the polygonal body 51. By rotating the polygonal knob 62, the direction of pressure change can be clearly known.

[0079] The pressure regulating device for a pressure cooker 1 according to an embodiment of the present invention comprises the following steps: 1. When the pressure cooker 1 is manufactured, the knob is in the "standard" position, for example, with a pressure value of 60 kPa. 2. During subsequent use, consumers can rotate the "pressure regulating knob" and adjust the "polygonal metal head" to adjust the upward and downward movement of the pressure switch 3 contacts, thereby deforming the spring 32 of the pressure switch 3 and thereby varying the pressure within the cooker. 3. The standard position of the polygonal metal head: The distance between the two sides is 7.6 mm. When the distance is rotated to 7.8 mm, the pressure value decreases, and when the distance is rotated to 8.0 mm, the pressure value decreases even further. When rotated in the other direction, the pressure value increases when the distance is 7.4 mm. 4. The polygonal body 51 is preferably an octagon. To achieve more pressure ranges, the number of polygons can be increased.

[0080] The principle of the pressure switch 3 controlling the pressure in the pot is: when there is pressure in the pot, the heating plate 2 will move upward as shown in the figure. During the movement (other parts remain unchanged), the contacts of the pressure switch 3 will be forced to move upward, causing the spring 32 of the pressure switch 3 to deform. When the set pressure value is reached, the pressure switch 3 will be disconnected. At this time, the control program will receive the signal that the pressure switch 3 is disconnected, and the program will stop heating the heating plate 2 to achieve the purpose of controlling the pressure in the pot.

[0081] Because polygonal body 51 has different sides with different heights (7.4mm, 7.6mm, 7.8mm, and 8.0mm), its rotation causes the bracket to deform upward and downward, thereby causing the contacts of pressure switch 3 to float up and down. This in turn causes the spring 32 of pressure switch 3 to deform, thereby enabling pressure switch 3 to control the pressure within pressure cooker 1. For example, in mass production, if a 7.6mm side corresponds to a pressure value of 60 kPa, then to set the pressure within the cooker to 70 kPa, simply turn the knob to the 7.4mm position. To set the pressure within the cooker to 50 kPa, turn it to the 7.8mm position, and so on.

[0082] Please continue reading Figure 10 and Figure 11 Preferably, the voltage-regulating metal head 5 is a plate-shaped member 63, and a plurality of parallel voltage-regulating protrusions 64 are provided on the voltage-regulating metal head 5, and the heights of the plurality of voltage-regulating protrusions 64 are different; when one voltage-regulating protrusion 64 is facing the switch contact 31, the remaining voltage-regulating protrusions 64 are located outside the metal bracket 4; the voltage-regulating body 6 pushes the voltage-regulating metal head 5 to translate so that any voltage-regulating protrusion 64 can be located directly below the switch contact 31.

[0083] Please continue reading Figure 10 and Figure 11 The pressure regulating metal head 5 of the embodiment of the present invention is a plate-shaped member 63. This is because the pressure regulating metal head 5 of the embodiment of the present invention is not limited to a rotational method to achieve the purpose of adjusting multiple pressure values. The plate-shaped member 63 can also be used to move left and right. In addition, it should be noted that any method in which the pressure regulating metal head 5 of the embodiment of the present invention can deform the contacts of the pressure switch 3 can achieve the purpose of adjusting the pressure value.

[0084] Please continue reading Figure 10 and Figure 11 Preferably, a voltage regulating protrusion 64 faces the switch contact 31 , and the voltage regulating protrusion 64 is located between the top surface and the bottom surface of the metal bracket 4 .

[0085] Please continue reading Figure 10 and Figure 11 Preferably, the multiple pressure-regulating protrusions 64 include a third low-pressure protrusion, a second low-pressure protrusion, a first low-pressure protrusion, a standard pressure protrusion, a first high-pressure protrusion and a second high-pressure protrusion; the third low-pressure protrusion, the second low-pressure protrusion, the first low-pressure protrusion, the standard pressure protrusion, the first high-pressure protrusion and the second high-pressure protrusion are distributed from left to right in sequence; the height values ​​of the third low-pressure protrusion, the second low-pressure protrusion, the first low-pressure protrusion, the standard pressure protrusion, the first high-pressure protrusion and the second high-pressure protrusion decrease in sequence.

[0086] Preferably, the pressure regulating body 6 includes a pressure regulating plate 65 and a pressure regulating handle 66, one end of the pressure regulating plate 65 is connected to the pressure regulating metal head 5, and the other end of the pressure regulating plate 65 is connected to the pressure regulating handle 66; the pressure regulating plate 65 includes a first transverse plate 651, a second transverse plate 652 and a vertical plate 653, there is a height difference between the first transverse plate 651 and the second transverse plate 652, the vertical plate 653 connects the first transverse plate 651 and the second transverse plate 652, and the vertical plate 653 is located between the first transverse plate 651 and the second transverse plate 652; the first transverse plate 651 is in contact with the pressure regulating metal head 5, and the second transverse plate 652 is in contact with the pressure regulating handle 66.

[0087] In the embodiment of the present invention, the pressure regulating metal head 5 of the pressure regulating mechanism is used to adjust the height values ​​of the top and bottom surfaces of the metal bracket 4. The change in the height value between the top and bottom surfaces causes the switch contact 31 to move up and down, and the switch spring 32 of the switch body to undergo different deformations, thereby achieving the purpose of changing the pressure value.

[0088] The series of detailed descriptions listed above are only specific descriptions of feasible implementation methods of the present invention. They are not intended to limit the scope of protection of the present invention. Any equivalent implementation methods or changes that do not deviate from the technical spirit of the present invention should be included in the scope of protection of the present invention.

[0089] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0090] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A pressure cooker pressure regulating method, characterized in that: include: Select the pressure condition of the pressure cooker, which includes micro pressure, low pressure, standard pressure or high pressure; Rotate the pressure regulating metal head by the pressure regulating knob until the height between the top and bottom surfaces of the metal bracket supported by the pressure regulating metal head matches the pressure condition; When the pressure cooker is working, the movement of the heating plate forces the spring of the pressure switch to deform. The spring deforms differently under different pressure conditions. The pressure switch is disconnected until the spring deformation matches the pressure condition. The pressure adjustment is specifically to use the pressure regulating metal head of the pressure regulating mechanism to adjust the height of the top and bottom surfaces of the metal bracket. The change in the height between the top and bottom surfaces causes the switch contacts to move up and down, and the switch spring of the switch body to undergo different deformations, thereby achieving the purpose of changing the pressure value; The pressure cooker also includes a pressure regulating device, specifically comprising: a metal bracket in contact with the switch contact, and a pressure regulating mechanism passing through the metal bracket; The voltage regulating mechanism includes a voltage regulating metal head and a voltage regulating body. The voltage regulating metal head is located between the bottom surface and the top surface of the metal bracket, and the voltage regulating metal head supports the top surface of the metal bracket.

2. The pressure cooker pressure regulating method according to claim 1, characterized in that: The corresponding relationship between the pressure condition and the pressure cooker is: Micro pressure, low pressure, standard pressure and high pressure each correspond to a pressure value, and the pressure values ​​of micro pressure, low pressure, standard pressure and high pressure gradually increase; The height of the pressure regulating metal head corresponding to micro pressure, low pressure, standard pressure and high pressure gradually decreases.

3. The pressure regulating method for a pressure cooker according to claim 1, wherein: The movement of the heating plate is specifically as follows: When there is pressure in the pressure cooker, the heating plate moves towards the spring; During the movement of the heating plate, the switch contacts of the pressure switch are forced to move in the same direction as the heating plate, and the switch contacts drive the spring to deform; The spring deforms until the pressure in the pressure cooker reaches the set pressure value corresponding to the pressure condition, and the pressure switch is disconnected; The control program receives the pressure switch disconnect signal, and the control program controls the heating plate to stop heating to control the pressure in the pot.

4. A pressure cooker pressure regulating device for use in the pressure cooker pressure regulating method according to any one of claims 1 to 3, for regulating the pressure value of a pressure switch, wherein the pressure switch comprises a switch body and a switch contact, the switch body and the switch contact being electrically connected, characterized in that: The pressure cooker pressure regulating device comprises: a metal bracket in contact with the switch contact, and a pressure regulating mechanism penetrating the metal bracket; The voltage regulating mechanism includes a voltage regulating metal head and a voltage regulating body, wherein the voltage regulating metal head is located between the bottom surface and the top surface of the metal bracket, and the voltage regulating metal head supports the top surface of the metal bracket; The bottom surface of the metal bracket is installed on the heating plate, the switch contact contacts the top surface of the metal bracket, and the voltage regulating body adjusts the position of the voltage regulating metal head to achieve height adjustment between the top and bottom surfaces of the metal bracket.

5. The pressure regulating device for a pressure cooker according to claim 4, characterized in that: The metal bracket includes a bottom plate, a top plate and a vertical plate, the bottom plate and the top plate are connected to the vertical plate, and the bottom plate is connected to the heating plate; The top plate is in contact with the switch contacts, the voltage regulating metal head is located between the top plate and the bottom plate, and the voltage regulating metal head is in contact with both the top plate and the bottom plate; The voltage regulating body passes through the vertical plate and is connected to the voltage regulating metal head, and the voltage regulating body supports the top plate.

6. The pressure regulating device for a pressure cooker according to claim 4, characterized in that: The voltage-regulating metal head includes a polygonal body and a columnar body, the columnar body connects the polygonal body and the voltage-regulating body, and the polygonal body supports the top plate of the metal bracket; The vertical height value of the polygon is a variable value. The polygons with different height values ​​cause the height of the spring in the switch body corresponding to the switch contact to change.

7. The pressure regulating device for a pressure cooker according to claim 6, characterized in that: The metal bracket is provided with an escape space for accommodating the columnar body, and a gap is formed between the columnar body and the top surface of the escape space.

8. The pressure regulating device for a pressure cooker according to claim 6, wherein: The pressure regulating body includes a pressure regulating rod and a polygonal knob. One end of the pressure regulating rod is connected to the columnar body of the pressure regulating metal head, and the other end of the pressure regulating rod is fixedly connected to the polygonal knob. The vertical height value of the polygon knob is also a variable value.

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