CN211270004U

CN211270004U - Sensor and electric pressure cooker

Info

Publication number: CN211270004U
Application number: CN201921507900.XU
Authority: CN
Inventors: 王厚钧; 汪强; 何宪宏; 汪国礼
Original assignee: Huizhou Bolande Technology Co ltd
Current assignee: Huizhou Bolande Technology Co ltd
Priority date: 2019-09-10
Filing date: 2019-09-10
Publication date: 2020-08-18
Anticipated expiration: 2029-09-10

Abstract

The utility model provides a sensor and electric pressure cooker, which comprises a housin, the inductance subassembly, the push rod, the constant damping diaphragm, linear adjusting screw, connecting wire and adjusting screw at zero point, the casing includes the shell, the closing cap, metal covering and sealing washer, the inductance subassembly is including the elastic component that resets, the magnetic core, a coil, the line frame, fixed cover and PCB, the aforesaid is used for sensor and pressure cooker through setting up the casing, the inductance subassembly, the push rod, the constant damping diaphragm, linear adjusting screw, connecting wire and adjusting screw at zero point, make the sensor can adapt to electric pressure cooker's high humidity, the service environment of high temperature, and installation small in size, therefore, the carrier wave prepaid electric energy meter is low in cost, can improve.

Description

Sensor and electric pressure cooker

Technical Field

The utility model relates to a sensor field especially relates to a sensor and electric pressure cooker.

Background

In daily life, the electric pressure cooker is almost a necessary electric appliance for every family, and as people's life is better and better, the requirements of people on life quality are higher and higher, the requirements of people on the electric pressure cooker are higher and higher, the method that people boil food by using a constant pressure method for the electric pressure cooker is not satisfied, people hope to cook more delicious food, however, people need to cook delicious food, the cooking pressure needs to be strictly controlled, especially in the current big data era, people also research what pressure curve can cook more delicious food, that is, the pressure of the electric pressure cooker needs to be detected in real time and adjusted in real time.

However, the high-temperature and high-humidity use environment of the electric pressure cooker has more strict requirements on the pressure sensor, the common pressure sensor cannot accurately detect the pressure in the high-temperature and high-humidity environment, and the specific pressure sensor can adapt to the high-temperature and high-humidity use environment, so that on one hand, the volume of the specific pressure sensor is not small enough, the problems of difficult assembly and installation and the like are caused, on the other hand, the price is high, the cost is increased rapidly, and the large-batch production and application cannot be realized; the measurement value of the measurement method for converting the displacement sensor into the pressure value is often inaccurate, and when the pressure of the electric pressure cooker is converted into the diaphragm thrust, the relation that the acting force is not in direct proportion to the actual thrust is easy to occur, so that the pressure value cannot be accurately measured.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the weak point among the prior art, provide a sensor and electric pressure cooker, wherein above-mentioned sensor can adapt to electric pressure cooker's high humidity, high temperature service environment, installs small in size moreover, and low cost can improve the detection precision of sensor through linear adjustment and zero setting simultaneously.

The purpose of the utility model is realized through the following technical scheme:

the utility model provides a sensor, installs on the pot cover of electric pressure cooker, its characterized in that includes:

a housing;

the inductance assembly is accommodated in the shell;

one end of the push rod is connected with the inductance assembly, and the other end of the push rod is provided with a fixing area;

the edge of the constant damping diaphragm is fixed with the shell, a fixing part is arranged on the constant damping diaphragm, the fixing part is fixed with the fixing area, the constant damping diaphragm is arranged towards the inner container of the electric pressure cooker, and the fixing part is used for pushing the fixing area.

In one embodiment, the constant damping diaphragm is provided with a membrane ring around the fixation portion.

In one embodiment, the fixing portion is bonded to the fixing section such that the fixing portion is fixed to the fixing section.

In one embodiment, the fixing area is a groove, and the fixing portion is a convex pillar embedded in the groove.

In one embodiment, the sensor further comprises a linear adjusting screw and a connecting wire, the housing comprises a shell, a cover and a metal sleeve, one end of the shell is in sealed buckling with the cover, the other end of the shell is integrally injection-molded with the metal sleeve, a wire connection port is arranged at the buckling position of the shell and the cover, the connecting wire penetrates through the wire connection port, a first curing sealant is filled in the wire connection port, the cover is provided with a mounting port, the linear adjusting screw penetrates through the mounting port and is connected with the inductance component, and a second curing sealant is arranged at the mounting port.

In one embodiment, the outer shell is provided with a boss which is used for being clamped on a cover of the electric pressure cooker.

In one embodiment, the inductance assembly includes a return elastic member, a magnetic core, a coil and a PCB, the magnetic core is respectively connected to one end of the push rod and a moving end of the return elastic member, the coil is disposed in the housing, the coil is coupled to the magnetic core, and the coil is electrically connected to the PCB.

In one embodiment, the sensor further comprises a zero point adjusting screw, the zero point adjusting screw is screwed with the inductance assembly, and the zero point adjusting screw is used for adjusting the position of the zero point adjusting screw in the inductance assembly.

In one embodiment, the linear adjusting screw is screwed with the inductance component, and the linear adjusting screw is used for being connected with the fixed end of the reset elastic piece.

In one embodiment, an electric pressure cooker includes any one of the above sensors, and further includes: the pot cover comprises a pot cover, an inner container, a cleaning cover body and a base, wherein the inner container is arranged in the base, the pot cover is buckled with the base, the shell is arranged on the pot cover in a penetrating mode and fixed, the cleaning cover body is detachably mounted on the pot cover, and the cleaning cover body is used for shielding the constant damping diaphragm.

Compared with the prior art, the utility model discloses at least, following advantage has:

a sensor and an electric pressure cooker are provided, wherein the sensor is suitable for the use environment with high requirements on high humidity, high temperature and sanitation of the electric pressure cooker by arranging a shell, an inductance assembly, a push rod, a constant damping diaphragm, a linear adjusting screw, a connecting wire and a zero adjusting screw, is easy to clean, can meet the installation requirements of most electric pressure cookers, and can be used for linear adjustment and zero adjustment, so that the detection precision of the sensor is ensured and zero adjustment can be realized; the electric pressure cooker provided with the sensor can realize accurate detection of the steam pressure in the inner container, the sensor is not easy to adhere food residues, and the electric pressure cooker is convenient to clean even if the food residues adhere to the sensor, namely, the electric pressure cooker using the sensor can realize accurate detection of the steam pressure in the electric pressure cooker and greatly save the cost while not influencing the use of the existing electric pressure cooker.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural view of a sensor and an electric pressure cooker according to an embodiment of the present invention;

FIG. 2 is a schematic view of an assembly structure of the sensor and the sensor of the pressure cooker shown in FIG. 1;

FIG. 3 is a schematic diagram showing the detailed structure of the sensor and the sensor of the pressure cooker shown in FIG. 1;

FIG. 4 is a schematic structural view of a housing of the sensor shown in FIG. 3;

FIG. 5 is a schematic view of the wiring port of the housing shown in FIG. 4;

FIG. 6 is a schematic view of the boss of the housing shown in FIG. 4;

FIG. 7 is a schematic diagram of the inductance assembly, push rod and zero adjustment screw of the sensor shown in FIG. 3;

FIG. 8 is a cross-sectional structural view of the constant damping diaphragm and push rod of the sensor shown in FIG. 3;

FIG. 9 is a schematic diagram of the core and coil operating principle of the sensor shown in FIG. 3;

FIG. 10 is a schematic view of the mounting structure of the sensor shown in FIG. 3 with the coil in a changed position relative to the core;

FIG. 11 is a schematic view of the mounting structure of the sensor shown in FIG. 3 with the position of the magnetic core changed relative to the coil;

fig. 12 is a schematic structural view of the installation position of the sensor and the electric pressure cooker shown in fig. 1.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

It is noted that as used herein, reference to an element being "connected" to another element also means that the element is "in communication" with the other element, and fluid can be in exchange communication between the two.

In one embodiment, a sensor and an electric pressure cooker comprise: sensor and use electric pressure cooker of this sensor, the sensor includes: the shell comprises a shell, a sealing cover, a metal sleeve and a sealing ring, the inductance assembly comprises a reset elastic piece, a magnetic core, a coil, a wire frame, a fixed sleeve and a PCB, the constant damping diaphragm is used for directly contacting a pressure environment and transmitting detected pressure to the push rod, the push rod is used for transmitting the pressure transmitted from the constant damping diaphragm to the inductance assembly, the inductance assembly is used for converting the pressure into a corresponding electric quantity signal, the connecting wire is used for transmitting the electric quantity signal to a system for receiving the electric quantity signal, the linear adjusting screw is used for adjusting the detection precision of the sensor, the zero adjusting screw is used for adjusting the zero position of the sensor, and the shell is used for hermetically accommodating the inductance assembly, the push rod, the constant damping diaphragm, the linear adjusting screw, the connecting wire and the zero adjusting screw, the sensor is suitable for the use environment with high requirements on high humidity, high temperature and sanitation of the electric pressure cooker by arranging the shell, the inductance assembly, the push rod, the constant damping diaphragm, the linear adjusting screw, the connecting wire and the zero adjusting screw, and the constant damping diaphragm is made of food-grade, high temperature resistant and high humidity resistant materials, so that a detection part of the sensor can be directly exposed in the steam environment of the electric pressure cooker, the sensor is easy to clean and can meet the installation requirements of the electric pressure cooker used daily; further, the electric pressure cooker using the sensor comprises: the pot cover, the inner bag, wash the cover body and base, the base is used for holding the inner bag, the pot cover forms airtight space with the inner bag, and the pot cover is used for installing above-mentioned sensor, wash the food waste that the cover body is used for keeping apart the inner bag, make only steam pressure and extremely tiny residue can reach the detection position of above-mentioned sensor, therefore, the electric pressure cooker of above-mentioned sensor has been installed, just can realize carrying out accurate detection to the steam pressure in the inner bag, and above-mentioned sensor is difficult for adhesion food waste, even be stained with food waste also be convenient for wash, that is, be provided with the electric pressure cooker of above-mentioned sensor, when not influencing the use of present electric pressure cooker, can realize carrying out accurate detection to the steam pressure in the electric pressure cooker, and because above-mentioned.

In order to better explain the sensor and the electric pressure cooker of the present application and to better understand the concept of the sensor and the electric pressure cooker, please refer to fig. 1, fig. 2, fig. 3 and fig. 8, a sensor and an electric pressure cooker includes a sensor 10 and an electric pressure cooker 20 equipped with the sensor 10, the sensor 10 is used for detecting the pressure of the electric pressure cooker 20, and the sensor 10 includes: the electric pressure cooker comprises a shell 100, an inductance assembly 200, a push rod 300 and a constant damping diaphragm 400, wherein the shell 100 is used for being installed on the electric pressure cooker 20, the inductance assembly 200 is contained in the shell 100, one end of the push rod 300 is connected with the inductance assembly 200, the other end of the push rod 300 is provided with a fixing area 310, the edge 410 of the constant damping diaphragm 400 is fixed with the shell 100, the constant damping diaphragm 400 is provided with a fixing part 420, the fixing part 420 is fixed with the fixing area 310, the constant damping diaphragm 400 is used for being arranged towards the inner container of the electric pressure cooker, and the fixing part 420 is used.

It should be noted that, the inside of the casing 100 is a cavity, the bottom of the casing 100 is a through hole structure, the constant damping diaphragm 400 is connected with the casing 100, so that the cavity inside the casing 100 becomes a completely sealed cavity, the inductance component 200 and the push rod 300 are both installed in the casing 100, since the constant damping diaphragm 400 is arranged facing the inner container of the electric pressure cooker 20, when the air pressure in the inner container of the electric pressure cooker 20 rises, the pressure will act on the constant damping diaphragm 400, since the constant damping diaphragm 400 receives the pressure, the constant damping diaphragm 400 will push against the fixing area 310 fixed with the fixing portion 420, and since the fixing area 310 receives the force, the push rod 300 will receive the push force, so that the pressure in the electric pressure cooker 20 can be converted into the mechanical movement of the push rod 300, the movement of the push rod 300 can change the inductance of the inductance component 200, and thus the pressure of the electric pressure cooker 20 can be finally converted, so that pressure data of the electric pressure cooker 20 can be collected.

Referring to fig. 4, the casing 100 includes a casing 110, a sealing cover 120 and a metal sleeve 130, the casing 100 further includes a sealing ring 140, one end of the casing 110 is fastened to the sealing cover 120 in a sealing manner, that is, the casing 110 is welded to the sealing cover 120 by ultrasonic welding or heat welding, so that the casing 110 and the sealing cover 120 are completely sealed, the other end of the casing 110 is integrally injection-molded with the metal sleeve 130, so that the casing 110 and the metal sleeve 130 can be hermetically connected together, further, the casing 110 is provided with a sealing bearing layer 111 and a sealing opening 112, the metal sleeve 130 is provided with a positioning edge 131, a limiting hole 132, a sealing post outer side surface 133 and a sealing post inner side surface 134, the metal sleeve 130 is inserted into the sealing opening 112, so that the sealing bearing layer 111 and the positioning edge 131 are tightly attached to each other, the positioning edge 131 is used for enhancing the strength of the casing when integrally molded, the limiting hole 132 is used for integrally molding the metal sleeve 130 and the casing 110 so, the outer side surface 133 of the sealing post is integrated with the outer shell 110 and is completely attached to the sealing plane of the outer shell 110, the buckling position of the outer shell 110 and the sealing cover 120 is provided with a wiring port 150, the sealing cover 120 is provided with a mounting port 160, the outer side surface 133 of the sealing post is sleeved with the sealing ring 140, the sealing ring 140 is used for eliminating a gap between the metal sleeve 130 and the mounting position of the electric pressure cooker 20, the problem that the air tightness of the electric pressure cooker 20 is poor at the position where the sensor 10 is mounted is prevented, and the sealing performance of the use environment of the sensor.

Referring to fig. 5, the connection port 150 is used for penetrating a connection line 600, the connection line 600 is used for transmitting pressure data detected by the inductance assembly 200 to a control system of the electric pressure cooker 20, and in order to facilitate installation and detachment of the sensor, a plug terminal 610 is disposed at the connection port 150 and the connection line 600 is connected to the electric pressure cooker 20 and the connection line 600 of the sensor 10 in a plug manner, so that the connection line 600 is separated from the connection line 600 of the sensor 10, and the plug terminal 610 is used for connection, thereby facilitating installation and detachment of the sensor 10, and besides, the pressure value detected by the inductance assembly 200 can be directly transmitted to the control system of the electric pressure cooker 20 in a continuous connection manner.

Referring to fig. 2 and 4 again, the housing 110 is provided with a boss 113, and the boss 113 is used for being clamped on the cover of the electric pressure cooker 20. The sensor 10 is used for being clamped on the cover of the electric pressure cooker 20, and the sensor 10 is actually fixed on the cover of the electric pressure cooker 20 through the boss 113.

Referring to fig. 3 again, the housing 110 is further provided with an inductor locking position 114, and the inductor locking position 114 is used for locking the inductor assembly 200, so that the inductor assembly 200 and the housing 100 are fixed as a whole, thereby preventing the inductor assembly 200 and the housing 100 from having a gap, which affects the detection accuracy of the sensor 10.

Referring to fig. 6, the boss 113 is provided with a locking hole 113a, and the locking hole 113a is used for passing a screw, so that the sensor 10 can be locked and fixed on the electric pressure cooker 20 by using the screw, and the installation strength of the sensor 10 can be enhanced by locking the sensor 10 by using the screw.

Referring to fig. 3 and 7, the inductance assembly 200 includes a reset elastic member 210, a magnetic core 220, a coil 230 and a PCB240, wherein the magnetic core 220 is connected to one end of the push rod 300 and the moving end of the reset elastic member 210, the coil 230 is disposed in the housing 100, the magnetic core 220 is coupled to the coil 230, and the coil 230 is electrically connected to the PCB 240.

It should be noted that, the elastic resetting member 210 is used for supporting the magnetic core 220 connected with the elastic resetting member 210, when the pressure of the inner container of the electric pressure cooker 20 acts on the push rod 300 from the constant damping diaphragm 400, the push rod 300 will act on the magnetic core 220 connected with one end of the push rod 300 by the pressure transmitted from the inner container of the electric pressure cooker 20, so that the magnetic core 220 is displaced towards the elastic resetting member 210 by the pressure of the inner container of the electric pressure cooker 20, and the elastic resetting member 210 is in a compressed state at this time, so that the relative position of the magnetic core 220 and the coil 230 is changed, because the magnetic core 220 and the coil 230 utilize the geomagnetic induction principle, and the coil 230 is electrically connected with the PCB240, so that the PCB240 generates corresponding electric quantity change, thus, the function of converting the pressure received by the inner container of the electric pressure cooker 20 into an electric signal can be realized, because the free end of the elastic resetting member, the reset elastic member 210 in the compressed state is reduced by the pressure, the reset elastic member 210 is restored to the natural state from the compressed state due to the elastic force of the reset elastic member 210, the magnetic core 220 connected with the free end of the reset elastic member 210 is restored to the initial position under the elastic force of the reset elastic member 210, and the relative position of the magnetic core 220 and the coil 230 is also restored to the initial state, so that the function of converting the pressure into an electric signal can be realized through the arranged constant damping diaphragm 400, the push rod 300, the reset elastic member 210, the magnetic core 220, the coil 230 and the PCB240 under the pressure action of the inner container of the electric pressure cooker 20, and the purpose of detecting the pressure in the electric pressure cooker 20 is realized.

In one embodiment, the magnetic core 220 is connected to one end of the elastic return element 210, and an elastic element positioning step is formed on the magnetic core, and the elastic element positioning step is used for clamping the elastic return element 210, so that the elastic return element 210 can be fixed to one end of the magnetic core 220.

Referring to fig. 7 again, the inductance assembly 200 further includes a wire frame 250 and a fixing sleeve 260, the middle of the wire frame 250 is a through hole, one end of the through hole is provided with a linear adjusting thread 251 and a zero adjusting thread 252, one end of the wire frame 250 away from the linear adjusting thread 251 is provided with a sealing groove 253 and a limiting groove 254, the fixing sleeve 260 is provided with a clamping position 261 and a limiting step 262, the coil 230 is arranged at the middle position of the wire frame 250, the PCB240 is arranged at one side of the wire frame 250, the magnetic core 220 and the push rod 300 are sequentially placed in the through hole, and then placed in the fixing sleeve 260, the clamping position 261 is used for welding or fusing with the wire frame 250 to prevent the push rod 300 from falling out of the wire frame 250, further, the push rod 300 is provided with a limiting edge 320, the push rod 300 is connected with the magnetic core 220 and is welded or fused into a whole, the push rod 300 is inserted in the fixing sleeve 260, and, in fact, the whole body formed by connecting the push rod 300 and the magnetic core 220 can have a certain moving space in the fixing sleeve 260, but cannot fall out.

Referring to fig. 3 again, the bobbin 250 further has an inductor engaging portion 255, and the inductor engaging portion 255 engages with the inductor engaging portion 114, and then the inductor assembly 200 is fixed to the housing 100 by welding or fusing.

In one embodiment, the magnetic core 220 is sleeved on the push rod 300, and then the magnetic core 220 and the push rod 300 are fixed into a whole by welding or fusing, one end of the push rod 300 is connected with the moving end of the return elastic member 210, and the other end of the push rod 300 is connected with the constant damping diaphragm 400, so that when the constant damping diaphragm 400 is pressed, the push rod 300 connected with the constant damping diaphragm 400 is pushed, and the magnetic core 220 is sleeved on the push rod 300, that is, the magnetic core 220 is pushed to move.

Referring to fig. 8 again, the constant damping diaphragm 400 is provided with a film ring 430 around the fixing portion 420, the constant damping diaphragm 400 is further provided with a sealing protrusion 440 and a positioning protrusion 450, the sealing protrusion 440 is tightly attached to the sealing groove 253, and the positioning protrusion 450 is tightly attached to the limiting groove 254, so that the constant damping diaphragm 400 can be assembled to the inductance assembly 200, because the film ring 430 is designed to be a very thin film, and because the bottom of the fixing portion 420 is designed to be thick and to be attached to the end surface of the fixing region 310, and the edge 410 is fixedly attached to the inner side 134 of the sealing post, when the constant damping diaphragm 400 is subjected to the pressure of the fixing portion 20, only the film ring 430 is actually deformed, and because the film ring 430 is very thin, the constant damping diaphragm 400 is in a constant damping state within a certain range, that is, the pressure of the inner container of the electric pressure cooker 20 can be completely applied to the fixing region 310 fixed to the fixing portion 420 by the damping diaphragm 400, in this way, the pressure can be transmitted to the push rod 300 without damage, so that the first step of the pressure detection of the electric pressure cooker 20 can be completed.

In one embodiment, the fixing portion 420 is bonded to the fixing portion 310, so that the fixing portion 420 is fixed to the fixing portion 310, and thus, when the constant damping diaphragm 400 is subjected to a pressure, the pressure can be completely transmitted to the push rod through the fixing portion 310 bonded to the fixing portion 420, and thus, pressure loss does not occur in the fixing portion 420 and the fixing portion 310, and the accuracy of detecting the pressure by the sensor 10 is improved.

Referring to fig. 8 again, the fixing region 310 is a groove, the fixing portion 420 is a convex pillar embedded in the groove, and the fixing region 310 and the fixing portion 420 are fixed without slipping, so that a good fixing effect can be achieved by embedding, and the edge surface of the groove supports the bottom of the convex pillar, so that when pressure acts on the constant damping diaphragm 400, deformation of the diaphragm is blocked at the edges of the film ring 430 and the push rod 300 and the edges of the film ring 430 and the metal sleeve 130, and finally, only the film ring 430 deforms.

In one embodiment, the constant damping diaphragm 400 and the metal sleeve 130 are made of food-grade materials and can resist high temperature and high humidity, so that the constant damping diaphragm 400 and the metal sleeve 130 can be directly contacted with the pressure area in the electric pressure cooker 20, and the pressure in the electric pressure cooker 20 can be accurately detected.

Referring to fig. 3 again, the sensor 10 further includes a linear adjustment screw 500 and a connection line 600, the connection line 600 is disposed through the wiring port 150, the wiring port 150 is filled with a first curing sealant, the first curing sealant is used to completely seal the wiring port 150, the linear adjustment screw 500 is disposed through the mounting port 160, the linear adjustment screw 500 is connected to the inductance assembly 200, the mounting port 160 is disposed with a second curing sealant, in one embodiment, the linear adjustment screw 500 is screwed to the inductance assembly 200, and the linear adjustment screw 500 is used to connect to the fixed end of the reset elastic element 210.

It should be noted that, the linear adjusting screw 500 is screwed with the inductance component 200, and is screwed with the bobbin 250, the linear adjusting screw 500 can be moved by screwing the linear adjusting screw 500, since the linear adjusting screw 500 is connected with the fixed end of the return elastic member 210, when the linear adjusting screw 500 moves close to the fixed end, actually pushing the fixed end, the return elastic member 210 is compressed, the elastic deformation of the return elastic member 210 increases, which means that the elastic force of the return elastic member 210 increases, if the elastic force of the return elastic member 210 increases, when the same pressure acts on the constant damping diaphragm 400 and further acts on the magnetic core 220 fixed with the constant damping diaphragm 400, the displacement of the magnetic core 220 decreases, and finally the electric quantity signal of the coil 230 decreases, that is, the inductance of the coil 230 per pascal pressure can be adjusted by adjusting the linear adjusting screw 500, therefore, by adjusting the linear adjusting screw 500, the pressure of the sensor 10 per pascal in the electric pressure cooker 20 can be converted into the corresponding inductance value in real time, that is, the output value of the debugging point can be easily changed, so that the pressure of the electric pressure cooker 20 can be accurately detected, after the pressure of the electric pressure cooker 20 is detected by the PCB240, the pressure data can be transmitted to the control system of the electric pressure cooker 20 through the connecting wire 600, after the linear adjusting screw 500 is adjusted, the wiring port 150 is completely sealed by using the first curing sealing adhesive, and the mounting port 160 is sealed by using the second curing sealing adhesive, so that the sensor 10 can form a sealed structure, and thus, the sensor 10 can adapt to the use environment with high humidity and high temperature.

Referring again to fig. 3, the sensor 10 further includes a zero point adjusting screw 700, the zero point adjusting screw 700 is screwed with the inductance assembly 200, and actually screwed with the bobbin 250, and the zero point adjusting screw 700 is used to adjust the position of the zero point adjusting screw in the inductance assembly 200.

It should be noted that, after the inductance assembly 200 is installed in the housing 100, the zero point adjusting screw 700 is screwed with the inductance assembly 200 through the installation opening 160, and actually, the zero point adjusting screw 700 is screwed with the wire frame 250, so that when the zero point adjusting screw 700 is screwed, the position of the zero point adjusting screw 700 relative to the wire frame 250 can be adjusted, and further the inductance of the coil 230 can be changed, so that the zero point output of the sensor 10 can be consistent and accurate, and therefore, no residual pressure exists in the electric pressure cooker after the sensor 10 is exhausted by the electric pressure cooker 20, and further, the smooth and safe opening of the electric pressure cooker 20 is ensured.

Referring to fig. 9, the inductance of the coil 230 is changed by the zero point adjusting screw 700, and in addition to changing the inductance of the coil 230 by using the material characteristics of the zero point adjusting screw 700, the inductance of the coil 230 can be changed by changing the initial relative position of the magnetic core 220 and the coil 230, specifically, when the sensor 10 is in a natural state, the coil 230 can be adjusted to displace relative to the magnetic core 220, and the magnetic core 220 can also be adjusted to displace relative to the coil 230, after the zero point output is confirmed, a pressure F is applied to the sensor 10 to cause the magnetic core 220 to displace relative to the magnetic core, and then the linear adjusting screw 500 is adjusted to cause the elastic force of the reset elastic member 210 to match the pressure F, thereby adjusting the output linearity of the product.

Referring to fig. 10, in order to provide a method for adjusting zero output of displacement of a coil 230 relative to a magnetic core 220, a zero adjusting screw 700 is screwed with a housing 100, the bottom of the zero adjusting screw 700 is connected to a wire frame 250, a zero adjusting block is disposed at the bottom of the zero adjusting screw 700, a zero adjusting button is disposed at the top of the wire frame 250, and the zero adjusting block is engaged with the zero adjusting button, so that the zero adjusting screw 700 is connected to the wire frame 250, when the zero adjusting screw 700 is screwed, the zero adjusting screw 700 pushes the wire frame 250 connected to the zero adjusting screw 700, because the coil 230 is wound on the wire frame 250, the zero adjusting screw 700 can adjust the position of the coil 250, and thus, the relative position between the magnetic core 220 and the coil 230 can be adjusted, so as to control the zero output of the sensor 10, when the zero adjusting screw 700 is adjusted, the linear adjusting screw 500 is screwed to adjust the linear output, specifically, when the linear adjustment screw 500 is screwed, the linear adjustment screw 500 pushes the elastic return element 210 connected to the linear adjustment screw 500, and since the magnetic core 220 connected to one end of the elastic return element 210 is held by the push rod 300, the elastic return element 210 is compressed, and the magnetic core 220 connected to one end of the elastic return element 210 is changed by the elastic force of the elastic return element 210, so that the movement distance of the magnetic core under each pascal pressure applied to the constant damping diaphragm 400 can be changed, that is, the linear relationship of the sensor 10 is changed, and at this time, by providing a specified pressure to the constant damping diaphragm 400 and then adjusting the linear adjustment screw 500, the value detected by the sensor 10 is consistent with the given pressure value, the linear adjustment of the sensor 10 is realized, so that the sensor 10 can accurately detect the pressure.

Referring to fig. 11, in order to adjust the zero output for the displacement of the magnetic core 220 relative to the coil 230, the zero adjusting screw 700 is screwed with the housing 100, the zero adjusting screw 700 is connected with the magnetic core 220, when the zero adjusting screw 700 is screwed, the magnetic core 220 connected with the zero adjusting screw 700 can be driven to move, because the bobbin 250 is fixed on the housing 100, the relative position of the magnetic core 220 and the bobbin 250 can be changed, because the coil 230 is fixed on the bobbin 250, the relative position of the magnetic core 220 and the coil 230 can be changed, so as to realize the zero adjustment of the sensor 10, after the zero adjustment is finished, the linear adjusting screw 500 is screwed, so that the linear adjusting screw 500 pushes the reset elastic member 210 connected with the linear adjusting screw 500, because the magnetic core 220 connected with one end of the reset elastic member 210 is held by the push rod 300, the reset elastic member 210 is compressed, and the elastic member 220 connected with one end of the reset elastic member 210 is subjected to the change of the elastic member 210, thus, the linear relationship of the sensor 10 can be changed, and the linear adjustment of the sensor 10 is realized by giving a specified pressure to the constant damping film 400 at the detection end of the sensor and then adjusting the linear adjustment screw 500, so that the value detected by the sensor 10 is consistent with the given pressure value, and the sensor 10 can accurately detect the pressure.

In one embodiment, the elastic restoring member 210 is a spring, and the magnetic core 220 is pushed by elastic deformation and restoration of the spring.

In one embodiment, the first curing adhesive and the second curing adhesive are sealing glues for sealing the wire connection port 150 and the mounting port 160, respectively, specifically, after the inductance assembly 200, the push rod 300, the constant damping diaphragm 400 linear adjustment screw 500, the connecting wire 600 and the zero point adjustment screw 700 are mounted and adjusted, the sealing glues are poured into the wire connection port 150 and the mounting port 160 of the housing 100, so that the completely sealed sensor 10 can be obtained.

Referring to fig. 1 and 12, an electric pressure cooker 20 includes the sensor 10, and further includes: pot cover 21, inner bag 22, the cleaning cover body 23 and base 24, inner bag 22 sets up in base 24, and pot cover 21 and base 24 are buckled mutually, and sensor 10 wears to establish and fixes on pot cover 21, and cleaning cover body 23 demountable installation is on pot cover 21, and cleaning cover body 23 is used for shielding constant damping diaphragm 400.

It should be noted that the sensor 10 is directly inserted into the cover 21 through the mounting hole, the casing 100 is inserted into the cover 21, the casing 100 is fixed by the locking hole of the boss 113, and the mounting hole is sealed by the sealing ring 140, and the cleaning cover 23 is provided with a vent hole, so that most of the food residues can be isolated, even if some small food residues reach the constant damping diaphragm 400, the small food residues can be easily cleaned by clean water, because the metal sleeve 130 and the constant damping diaphragm 400 are made of food-grade materials and can resist high temperature and high humidity, the metal sleeve 130 and the constant damping diaphragm 400 can be directly exposed to steam pressure, and the casing 100 outside the cover 21 is made of plastic parts, so that the temperature in the electric pressure cooker 20 can be effectively isolated, and the internal components can be protected.

In one embodiment, the small cleaning cover 23 covers only the detecting portion of the sensor 10, and the small cleaning cover 23 is provided with a vent hole, so that the constant damping diaphragm 400 can accurately detect the pressure in the electric pressure cooker 20.

a sensor and an electric pressure cooker are provided, wherein the sensor is suitable for the use environment with high requirements on high humidity, high temperature and sanitation of the electric pressure cooker by arranging a shell, an inductance assembly, a push rod, a constant damping diaphragm, a linear adjusting screw, a connecting wire and a zero adjusting screw, is easy to clean, can meet the installation requirements of most electric pressure cookers, and can be used for linear adjustment and zero adjustment, so that the detection precision of the sensor is ensured and zero adjustment can be realized; the electric pressure cooker provided with the sensor can realize accurate detection of the steam pressure in the inner container, the sensor is not easy to adhere food residues, and the electric pressure cooker is convenient to clean even if the food residues adhere to the sensor, namely, the electric pressure cooker using the sensor can realize accurate detection of the steam pressure in the electric pressure cooker and can greatly save cost while not influencing the use of the existing electric pressure cooker.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. The utility model provides a sensor, installs on the pot cover of electric pressure cooker, its characterized in that includes:

a housing;

the inductance assembly is accommodated in the shell;

2. The sensor of claim 1, wherein the constant damping diaphragm is provided with a membrane ring around the fixed portion.

3. The sensor of claim 1, wherein the anchor portion is bonded to the anchor region such that the anchor portion is secured to the anchor region.

4. The sensor of claim 1, wherein the fixed region is a recess and the fixed portion is a post, the post being embedded in the recess.

5. The sensor of claim 1, further comprising a linear adjustment screw and a connection wire, wherein the housing includes a housing, a cover, and a metal sleeve, one end of the housing is fastened to the cover in a sealing manner, the other end of the housing is integrally injection-molded with the metal sleeve, a connection opening is disposed at a fastening position of the housing and the cover, the connection wire penetrates through the connection opening, a first curing adhesive is filled in the connection opening, the cover is provided with a mounting opening, the linear adjustment screw penetrates through the mounting opening, the linear adjustment screw is connected to the inductance assembly, and a second curing adhesive is disposed at the mounting opening.

6. Sensor according to claim 5, characterized in that the housing is provided with a boss for snapping onto a lid of an electric pressure cooker.

7. The sensor of claim 5, wherein the inductance assembly comprises a return spring, a magnetic core, a coil and a PCB, the magnetic core is connected to one end of the push rod and the moving end of the return spring, the coil is disposed in the housing, the coil is coupled to the magnetic core, and the coil is electrically connected to the PCB.

8. The sensor of claim 7, further comprising a zero adjustment screw threaded with the inductor assembly for adjusting the position of the zero adjustment screw in the inductor assembly.

9. The sensor of claim 7, wherein the linear adjustment screw is threaded into the inductance assembly, the linear adjustment screw being adapted to be coupled to the fixed end of the return spring.

10. An electric pressure cooker, characterized in that it comprises a sensor according to any one of claims 1 to 9, and further comprises: the pot cover comprises a pot cover, an inner container, a cleaning cover body and a base, wherein the inner container is arranged in the base, the pot cover is buckled with the base, the shell is arranged on the pot cover in a penetrating mode and fixed, the cleaning cover body is detachably mounted on the pot cover, and the cleaning cover body is used for shielding the constant damping diaphragm.