Pressure detection structure for pressure cooker

Abstract

The utility model relates to the technical field of pressure cookers, in particular to a pressure detection structure for a pressure cooker. Comprising a main body, a pressure release valve is installed on the main body, the main body is provided with a control circuit, and the control knob is rotated to enable the main body to switch a high-pressure state or a pressure release state; the rotating disc and the control knob rotate synchronously, a first switching part is arranged on the rotating disc, and the first switching part comprises a first high-position surface and a first low-position surface which are different in height; the upper end of the transmission part abuts against the first switching part, a magnet is installed at the lower end of the transmission part, and the upper end of the transmission part is switched between a first high-position face and a first low-position face by rotating the rotating disc; the proximity switch is fixedly installed below the magnet, the proximity switch is in communication connection with the control circuit, the proximity switch feeds back a magnetic field change signal to the control circuit, water vapor pressure in the pot body does not need to be utilized, the influence of water vapor on the detection structure is reduced, and the stability of the detection function of the detection structure is improved.

Description

Technical Field

[0001] This utility model relates to the field of pressure cooker technology, and in particular to a pressure detection structure for pressure cookers. Background Technology

[0002] The patent disclosed in CN201734543U discloses a pressure detection structure for an electric pressure cooker, which includes a pot body with a lid and a control device. The pressure detection device is installed in the lid, which includes a magnet that slides up and down in the lid and a magnetic proximity switch installed above the magnet. The lid has a through hole below the magnet that communicates with the pot body. The magnetic proximity switch is electrically connected to the control device. When there is a certain pressure in the pot body, the valve core can be pushed upward by the pressure in the pot body because the through hole connects the pot body and the valve core. The magnet also rises accordingly and comes close to the magnetic proximity switch at a certain distance. The proximity switch is activated, and the control device receives a signal to detect the pressure in the pot body.

[0003] However, although the aforementioned patent isolates the interior of the pot from the valve core and other components through a resilient sealing ring, in practical applications, due to excessive pressure inside the pot, when steam pushes upward against the resilient sealing ring, steam can still enter between the valve core and the valve seat, affecting the stability of the pressure detection structure's detection function. Utility Model Content

[0004] To solve the above-mentioned technical problems, the purpose of this utility model is to provide a pressure detection structure for a pressure cooker with stable detection function.

[0005] The technical solution adopted by this utility model to solve the problem is: a pressure detection structure for a pressure cooker, including a main body, on which a pressure relief valve is installed. The main body has a high-pressure state and a pressure-relief state. The main body is provided with a control circuit, and further includes: a control knob, which switches the main body between the high-pressure state and the pressure-relief state by rotating the control knob; a rotating disk, which rotates synchronously with the control knob, and is provided with a first switching part, which includes a first high surface and a first low surface with different heights; a transmission component, the upper end of which abuts against the first switching part, and a magnet is installed at the lower end of which the transmission component. Rotating the rotating disk causes the upper end of the transmission component to switch between the first high surface and the first low surface, thereby causing the transmission component and the magnet to move up and down; and a proximity switch, which is fixedly installed below the magnet and is communicatively connected to the control circuit. The proximity switch feeds back the magnetic field change signal to the control circuit.

[0006] As a further improvement to the above technical solution, it also includes a mounting base, which includes a rotating part and a transmission part adjacent to each other. The rotating disk is rotatably connected to the rotating part, and the transmission member is movably connected to the transmission part. The first switching part is located at the lower end of the edge of the rotating disk, and the upper end of the transmission member abuts against the lower end of the first switching part.

[0007] As a further improvement to the above technical solution, a slot is provided in the transmission part, and a compression spring is installed in the slot, with the upper end of the compression spring abutting against the lower end of the transmission component.

[0008] As a further improvement to the above technical solution, a guide post is provided in the slot, the guide post is vertically arranged, the compression spring is sleeved on the outer periphery of the guide post, and a guide hole is provided on the transmission component, the guide hole cooperating with the guide post.

[0009] As a further improvement to the above technical solution, a guide rib is provided on the inner side wall of the transmission part, and a guide groove is provided on the outer side wall of the transmission component. Both the guide rib and the guide groove are arranged in the vertical direction, and the guide rib cooperates with the guide groove.

[0010] As a further improvement to the above technical solution, the rotating disk is also provided with a second switching part, which includes a second high surface and a second low surface with different heights; it also includes a lever, which is rotatably connected inside the main body, and the first end and the last end of the lever can tilt up and down; the first end of the lever is provided with a first branch and a second branch that can tilt up and down synchronously, the first branch is drivenly connected to the pressure relief valve, and the second branch abuts against the second switching part; rotating the rotating disk causes the second branch to switch between the second high surface and the second low surface, thereby causing the first branch and the second branch to tilt up and down.

[0011] As a further improvement to the above technical solution, the second high surface and the second low surface are disposed at the upper end of the second switching part; an elastic element is disposed between the tail end of the lever and the main body, and under the action of the elastic element, the tail end of the lever has an upward tendency, and the head end of the lever abuts against the upper end of the second switching part.

[0012] The beneficial effects of this utility model are as follows: By setting a control knob, the rotation position of the control knob corresponds to the high pressure state or the pressure relief state. The mechanical transmission between the control knob, the rotating disk and the transmission component changes the position of the magnet in the vertical direction. The proximity switch identifies the magnetic field change signal and feeds it back to the control circuit, thereby realizing pressure detection. It does not require the use of water vapor pressure inside the pot, reduces the influence of water vapor on the detection structure, and improves the stability of the detection function of the detection structure. Attached Figure Description

[0013] The present invention will be further explained below with reference to the accompanying drawings and specific embodiments.

[0014] Figure 1 This is an exploded view of part of the structure of this utility model;

[0015] Figure 2 This is a partial structural diagram of the present invention under high pressure.

[0016] Figure 3 This is a partial structural diagram of the present invention in the depressurization state;

[0017] Figure 4 This is a schematic diagram of part of the structure of this utility model;

[0018] Figure 5 This is a cross-sectional view of the structure of this utility model;

[0019] In the diagram: 1-Main body, 2-Pressure relief valve, 3-Control knob, 4-Rotating disc, 41-First high surface, 42-First low surface, 43-Second high surface, 44-Second low surface, 5-Transmission component, 51-Magnet, 52-Guide groove, 53-Guide hole, 6-Proximity switch, 7-Mounting base, 71-Rotating part, 72-Transmission part, 721-Slot, 7211-Guide post, 722-Guide rib, 8-Lever, 81-First branch, 82-Second branch, 9-Compression spring. Detailed Implementation

[0020] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0021] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0022] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0023] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0024] Reference Figures 1 to 5 A pressure detection structure for a pressure cooker includes a main body 1 (including a lid and a pot body), a pressure relief valve 2 installed on the main body 1, under the action of the pressure relief valve 2, the main body 1 has a high-pressure state and a pressure-relief state, a control circuit is provided inside the main body 1, and further includes: a control knob 3, the control knob 3 is used to control the pressure relief valve 2, and the main body 1 switches between the high-pressure state and the pressure-relief state by rotating the control knob 3; a rotating disk 4, the rotating disk 4 is fixedly connected to the lower end of the control knob 3, the rotating disk 4 rotates synchronously with the control knob 3, the rotating disk 4 is provided with a first switching part, the first switching part includes a first high surface 41 and a first low surface 42 with different heights; and a transmission component 5, the transmission component... The upper end of the moving part 5 abuts against the first switching part, and the lower end of the transmission part 5 is fixedly installed with a magnet 51. Rotating the rotating disk 4 causes the upper end of the transmission part 5 to switch between the first high surface 41 and the first low surface 42. Since the first high surface 41 and the first low surface 42 are at different heights in the vertical direction, the transmission part 5 and the magnet 51 move up and down. The proximity switch 6 (fixedly installed in the pot body) is located below the magnet 51 and is relatively fixed. The proximity switch 6 is communicatively connected to the control circuit. The up and down movement of the magnet 51 causes the magnet 51 to move closer to or away from the proximity switch 6, and the magnetic field changes. The proximity switch 6 feeds back the magnetic field change signal to the control circuit.

[0025] like Figure 2 and Figure 3As shown, it should be understood that the magnetic field change signal corresponds to the state of the pressure relief valve 2. When the control knob 3 is rotated, and the pressure relief valve 2 is open, i.e., the main body 1 is in a pressure relief state, the upper end of the transmission component 5 abuts against the first high surface 41 under the action of the compression spring 9. The transmission component 5 and the magnet 51 move upward as a whole, and the magnet 51 moves away from the proximity switch 6. The signal is interrupted, the control circuit recognizes the pressure relief state, and opens the corresponding function when the pressure relief state is open. When the control knob 3 is rotated, and the pressure relief valve 2 is closed, i.e., the main body 1 is in a high pressure state, the upper end of the transmission component 5 abuts against the first low surface 42. The transmission component 5 and the magnet 51 move downward as a whole, and the magnet 51 moves closer to the proximity switch 6. The proximity switch 6 receives the signal and feeds it back to the control circuit. The control circuit recognizes the high pressure state and opens the corresponding function when the high pressure state is open.

[0026] In some embodiments, a mounting base 7 is further included, which is fixedly installed inside the main body 1. The mounting base 7 includes a rotating part 71 and a transmission part 72 adjacent to each other. The rotating disk 4 is rotatably connected to the rotating part 71, and the transmission member 5 is movably connected up and down inside the transmission part 72. The first switching part is located at the lower end of the edge of the rotating disk 4. The diameter of the rotating disk 4 is larger than that of the rotating part 71. The edge of the rotating disk 4 extends beyond the rotating part 71 and partially falls on the mounting base 7. The rotating disk 4 and the transmission member 5 partially overlap in the vertical direction, and the upper end of the transmission member 5 abuts against the lower end of the first switching part.

[0027] In some embodiments, a slot 721 is provided in the upper end of the transmission part 72, and a compression spring 9 is installed in the slot 721. The upper end of the compression spring 9 abuts against the lower end of the transmission member 5. Under the action of the compression spring 9, the transmission member 5 has an upward tendency.

[0028] In a preferred embodiment, a guide post 7211 is provided in the slot 721. The guide post 7211 is vertically arranged. The compression spring 9 is sleeved on the outer periphery of the guide post 7211. The transmission member 5 is provided with a guide hole 53. The guide hole 53 cooperates with the guide post 7211 to restrict the movement of the transmission member 5 in the vertical direction.

[0029] In a preferred embodiment, a guide rib 722 is provided on the inner side wall of the transmission part 72, and a guide groove 52 is provided on the outer side wall of the transmission member 5. Both the guide rib 722 and the guide groove 52 are arranged in the vertical direction. The guide rib 722 cooperates with the guide groove 52, and the guide rib 722 and the guide groove 52 can move up and down relative to each other, further restricting the movement of the transmission member 5 in the vertical direction.

[0030] In some embodiments, the rotating disk 4 is further provided with a second switching part, the second switching part including a second high surface 43 and a second low surface 44 of different heights; it also includes a lever 8, the middle of which is provided with a shaft hole, and a rotating shaft is provided inside the main body 1, the rotating shaft passing through the shaft hole, so that the lever 8 is rotatably connected inside the main body 1, and the head end and tail end of the lever 8 can tilt up and down around the rotating shaft; the head end of the lever 8 is integrally provided with a first branch 81 and a second branch 82 that can tilt up and down synchronously, the first branch 81 is operatively connected to the pressure relief valve 2, and the second branch 82 abuts against the second switching part; rotating the rotating disk 4... The disc 4 causes the second branch 82 to switch between the second high surface 43 and the second low surface 44, thereby causing the first branch 81 and the second branch 82 to tilt up and down. When the control knob 3 is rotated, and the second branch 82 abuts against the second high surface 43, the first branch 81 and the second branch 82 tilt up synchronously, and the first branch 81 opens the pressure relief valve 2. At this time, the main body 1 is in a pressure relief state. When the control knob 3 is rotated, and the second branch 82 abuts against the second low surface 44, the first branch 81 and the second branch 82 tilt down synchronously, and the gravity valve core on the pressure relief valve 2 resets and closes. At this time, the main body 1 is in a high pressure state.

[0031] In some embodiments, the second high surface 43 and the second low surface 44 are disposed at the upper end of the second switching part; an elastic element is disposed between the tail end of the lever 8 and the main body 1, and under the action of the elastic element, the tail end of the lever 8 has an upward tendency, and the head end of the lever 8 abuts against the upper end of the second switching part.

[0032] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural transformations made based on the inventive concept of this utility model and the contents of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are included within the patent protection scope of this utility model.

Claims

1. A pressure detection structure for a pressure cooker, comprising a main body (1), wherein a pressure relief valve (2) is installed on the main body (1), the main body (1) has a high-pressure state and a pressure-relief state, and the main body (1) is provided with a control circuit, characterized in that, Also includes: The control knob (3) is used to switch the main body (1) between high pressure and pressure relief states by rotating the control knob (3); Rotating disk (4), the rotating disk (4) rotates synchronously with the control knob (3), the rotating disk (4) is provided with a first switching part, the first switching part includes a first high surface (41) and a first low surface (42) with different heights; The transmission component (5) has its upper end abutting against the first switching part, and a magnet (51) is installed at the lower end of the transmission component (5). Rotating the rotating disk (4) causes the upper end of the transmission component (5) to switch between the first high surface (41) and the first low surface (42), thereby causing the transmission component (5) and the magnet (51) to move up and down. A proximity switch (6) is fixedly installed below the magnet (51). The proximity switch (6) is communicatively connected to the control circuit and feeds back the magnetic field change signal to the control circuit.

2. The pressure detection structure for a pressure cooker as described in claim 1, characterized in that: It also includes a mounting base (7), which includes a rotating part (71) and a transmission part (72) adjacent to each other. The rotating disk (4) is rotatably connected to the rotating part (71), and the transmission member (5) is movably connected to the transmission part (72). The first switching part is located at the lower end of the edge of the rotating disk (4), and the upper end of the transmission member (5) abuts against the lower end of the first switching part.

3. The pressure detection structure for a pressure cooker as described in claim 2, characterized in that: The transmission part (72) is provided with a slot (721), and a compression spring (9) is installed in the slot (721). The upper end of the compression spring (9) abuts against the lower end of the transmission member (5).

4. The pressure detection structure for a pressure cooker as described in claim 3, characterized in that: A guide post (7211) is provided in the slot (721). The guide post (7211) is vertically arranged. The compression spring (9) is sleeved on the outer periphery of the guide post (7211). A guide hole (53) is provided on the transmission component (5). The guide hole (53) cooperates with the guide post (7211).

5. The pressure detection structure for a pressure cooker as described in claim 2, characterized in that: The inner sidewall of the transmission part (72) is provided with a guide rib (722), and the outer sidewall of the transmission component (5) is provided with a guide groove (52). The guide rib (722) and the guide groove (52) are both arranged in the vertical direction, and the guide rib (722) and the guide groove (52) cooperate with each other.

6. The pressure detection structure for a pressure cooker as described in claim 1, characterized in that: The rotating disk (4) is also provided with a second switching part, which includes a second high surface (43) and a second low surface (44) of different heights; It also includes a lever (8), which is rotatably connected inside the main body (1), and the head and tail ends of the lever (8) can move up and down; The lever (8) has a first branch (81) and a second branch (82) at its head end that can move up and down synchronously. The first branch (81) is connected to the pressure relief valve (2) and the second branch (82) abuts against the second switching part. Rotating the rotating disk (4) causes the second branch (82) to switch between the second high plane (43) and the second low plane (44), thereby causing the first branch (81) and the second branch (82) to tilt up and down.

7. The pressure detection structure for a pressure cooker as described in claim 6, characterized in that: The second high-level surface (43) and the second low-level surface (44) are disposed at the upper end of the second switching part; An elastic element is provided between the tail end of the lever (8) and the main body (1). Under the action of the elastic element, the tail end of the lever (8) tends to be upturned, and the head end of the lever (8) abuts against the upper end of the second switching part.

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