CN217483730U

CN217483730U - Combined inductance type pressure sensor for pressure cooker

Info

Publication number: CN217483730U
Application number: CN202221637234.3U
Authority: CN
Inventors: 张成波; 周燕军
Original assignee: Foshan Langsheng Technology Co ltd
Current assignee: Foshan Langsheng Technology Co ltd
Priority date: 2022-06-27
Filing date: 2022-06-27
Publication date: 2022-09-23
Anticipated expiration: 2032-06-27

Abstract

The utility model discloses a combination inductance formula pressure cooker pressure sensor, including the sensor housing, first component groove has been seted up at the top of sensor housing, first component groove diapire runs through the sensor housing and forms the thimble hole, first component inslot is from last inductance shell and the metallic shield cup of down being equipped with in proper order, be equipped with the inductance body in the inductance shell, be equipped with the spring in the metallic shield cup, spring and inductance shell butt, metallic shield bottom of the cup portion is equipped with the thimble that passes the thimble hole, and through the work of inductance body combination of two sets of different positions, a set of pressure data that is, another a set of environmental benchmark data that is. The differential signal can be obtained through calculation and comparison of the single chip microcomputer, the temperature drift resistance and the electromagnetic dry winding resistance are better, and the pressure data test is not accurate enough under the condition of testing the pressure at a single point. The stability and the accuracy of positive pressure data are ensured, and the measurement precision of the inductive pressure sensor is effectively improved.

Description

Combined inductance type pressure sensor for pressure cooker

Technical Field

The utility model belongs to the technical field of inductance type pressure sensor technique and specifically relates to a combination inductance type pressure cooker pressure sensor is related to.

Background

Traditional pressure cooker is when the installation uses inductance type pressure sensor subassembly, and sensor unit often only adopts single pressure sensor to carry out the pressure measurement of single position, and the pressure data of acquireing lack the variety, can't obtain more accurate pressure data through multiunit data combination contrast, provides a combination inductance type pressure cooker pressure sensor for this reason.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model provides a combined inductance type pressure cooker pressure sensor, the inductance body through two sets of different positions is made up the work, acquires two sets of data, and a set of pressure data that is, another a set of environmental benchmark data that is. The differential signal can be obtained through calculation and comparison of the single chip microcomputer, and the temperature drift resistance and the electromagnetic dry winding resistance are better. The pressure data test is not accurate enough under the condition of single-point pressure test. The stability and the accuracy of positive pressure data are ensured, and the measurement precision of the inductive pressure sensor is effectively improved.

In order to solve the technical problem, the utility model provides a following technical scheme: the utility model provides a combination inductance formula pressure cooker pressure sensor, includes sensor housing, first component groove has been seted up at sensor housing's top, first component groove diapire runs through sensor housing and forms the thimble hole, first component inslot is from last inductance shell and the metallic shield cup down being equipped with in proper order, be equipped with the inductance body in the inductance shell, be equipped with the spring in the metallic shield cup, spring and inductance shell butt, metallic shield bottom of the cup portion is equipped with the thimble that passes the thimble hole, and the inductance body is connected with inductance circuit board, inductance circuit board is connected with the lead wire, and the lead wire end is equipped with the connection end, the second component groove has still been seted up at sensor housing top, be equipped with another inductance body in the second component inslot, another inductance body is connected with inductance circuit board, install the singlechip on the lead wire.

As a preferred technical scheme of the utility model, the installation apical trough has been seted up at sensor housing's top, the inductance circuit board is located the installation apical trough in, just the inductance circuit board passes through the fix with screw in the installation apical trough.

As an optimized technical scheme of the utility model, metallic shield cup slidable mounting is in first component inslot, the thimble runs through the metallic shield cup and fixes in the metallic shield cup.

As an optimized technical scheme of the utility model, the thimble is located the one end in the metallic shield cup outside and is formed with the platen, the bottom contact of platen and metallic shield cup.

As a preferred technical scheme of the utility model, the lower pot head of spring is established and is installed on the top of thimble, the bottom of inductance housing forms the embedded groove of upwards sunken, the embedded groove is including the spacing setting in upper end of spring.

As a preferred technical scheme of the utility model, inductance housing's last port forms outside outer border, the external diameter on outer border is greater than the bore in first component groove.

As a preferred technical scheme of the utility model, lead wire groove has been seted up to one side of installation overhead gage, lead wire groove is located one side in second component groove.

As a preferred technical scheme of the utility model, including the inductance circuit board, the inductance body of two symmetries, one are installed to inductance circuit board below be equipped with the metallic shield cup under the inductance body, metallic shield cup lower extreme lug connection has the testee, metallic shield cup material is for metal material or magnetic material such as aluminium, iron, copper.

Compared with the prior art, the utility model discloses the beneficial effect that can reach is:

through setting up two sets of inductance bodies, make up two sets of inductance body coupling on same inductance circuit board, through thimble activity drive inductance shell act on a set of inductance body, and the activity through the inductance shell, drive inductance circuit board activity, act on another set of inductance body, inductance body combination work through two sets of different positions, acquire two sets of data, a set of pressure data that is, another set of environmental reference data, through the singlechip calculation comparison, can acquire differential signal, there are better anti temperature drift and electromagnetism performance of winding futilely, avoid under the single point test pressure condition, the pressure data test is accurate inadequately, guarantee the stability and the accuracy of positive pressure data, this inductance type pressure sensor's measurement accuracy has effectively been improved.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

FIG. 1 is a schematic view of the present invention;

fig. 2 is a partial cross-sectional view of the pressure sensor of the present invention;

FIG. 3 is a schematic view of the installation of the metal shielding cup on the sensor housing according to the present invention;

fig. 4 is a schematic structural diagram of a sensor housing according to the present invention;

fig. 5 is a schematic structural view of the middle inductor body of the present invention;

FIG. 6 is a schematic structural view of a metal shielding cup according to the present invention;

fig. 7 is a schematic structural diagram of embodiment 2 of the present invention.

Wherein: 1. a sensor housing; 2. an inductor circuit board; 3. a lead; 4. a single chip microcomputer; 5. connecting the end heads; 6. a first element slot; 7. a thimble hole; 8. installing a top groove; 9. a second component slot; 10. a lead slot; 11. an inductor housing; 12. an outer edge; 13. an embedded groove is formed; 14. an inductor body; 15. a spring; 16. A metal shield cup; 17. a platen; 18. a thimble; 19. a screw; 20. and (5) measuring the object.

Detailed Description

In order to make the technical means, creation features, achievement objects and functions of the present invention easy to understand, the present invention will be further explained with reference to the following embodiments, however, the following embodiments are only preferred embodiments of the present invention, and not all embodiments are included. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without any creative work belong to the protection scope of the present invention. The experimental methods in the following examples are conventional methods unless otherwise specified, and materials, reagents and the like used in the following examples are commercially available unless otherwise specified.

Referring to fig. 1-7, the utility model provides a combined inductance type pressure cooker pressure sensor, which comprises a sensor housing 1, the sensor housing 1 is made of high temperature resistant insulating material, a first element groove 6 is arranged on the top of the sensor housing 1, the bottom wall of the first element groove 6 penetrates through the sensor housing 1 to form a thimble hole 7, a metal shielding cup 16 is movably arranged in the first element groove 6, a thimble 18 matched with the thimble hole 7 is arranged at the bottom end of the metal shielding cup 16, an inductance housing 11 positioned above the metal shielding cup 16 is arranged in the first element groove 6, an inductance body 14 is arranged in the inductance housing 11, an inductance circuit board 2 is arranged on the sensor housing 1, the inductance circuit board 2 is connected with the inductance body 14, a spring 15 is arranged in the metal shielding cup 16, the spring 15 is abutted against the inductance housing 11, when the thimble 18 is jacked, the metal shielding cup 16 moves upwards, and acts on the inductance body 14 in the inductance housing 11 through the spring 15, produce pressure inductance, second component groove 9 has still been seted up at sensor housing 1 top, be equipped with another inductance body 14 in the second component groove 9, another inductance body 14 is connected with inductance circuit board 2, when inductance shell 11 is by spring 15 extrusion upward movement, promote inductance circuit board 2 and take place the displacement, act on another inductance body 14, inductance circuit board 2 is connected with lead wire 3, the end of lead wire 3 is equipped with connection end 5, install singlechip 4 on the lead wire 3, singlechip 4 can receive the measured data that two list transmissions come simultaneously, a set of is pressure data, another set of environmental benchmark data, calculate the comparison through singlechip 4, can acquire differential signal, there are better anti temperature drift and the performance that the electromagnetism was wound futilely.

Preferably, the top of the sensor housing 1 is provided with an installation top groove 8, the inductance circuit board 2 is arranged in the installation top groove 8, the inductance circuit board 2 can be accommodated, and the inductance circuit board 2 is fixed in the installation top groove 8 through a screw 19.

Preferably, the shielding metal cup 16 is slidably mounted in the first component slot 6, and the thimble 18 penetrates through the shielding metal cup 16 and is fixed in the shielding metal cup 16; the connection firmness of the thimble 18 and the metal shielding cup 16 can be increased.

Preferably, a bedplate 17 is formed at one end of the thimble 18 positioned outside the metal shielding cup 16, and the bedplate 17 is contacted with the bottom of the metal shielding cup 16; the bedplate 17 is used for limiting the thimble 18 when the thimble 18 moves upwards.

Preferably, the lower end of the spring 15 is sleeved on the top end of the thimble 18 for fixing the lower end of the spring 15, an embedded groove 13 which is recessed upwards is formed at the bottom of the inductor housing 11, and the upper end of the spring 15 is limited and arranged in the embedded groove 13 for limiting the upper end of the spring 15.

Preferably, the upper port of the inductor housing 11 forms an outward outer edge 12, and the outer diameter of the outer edge 12 is greater than the caliber of the first element slot 6; for limiting the installation of the inductor housing 11.

Preferably, a lead groove 10 is formed in one side of the mounting top groove 8, and the lead groove 10 is located in one side of the second component groove 9; for mounting the inductance circuit board 2, the lead 3 is passed through.

Example (b):

the pressure sensor assembly is assembled on a pressure cooker, the pressure cooker is added with water and electrified for testing after being installed, when the pressure in the pressure cooker reaches a set value, the thimble 18 is jacked up by the high pressure in the cooker, the metal shielding cup 16 is jacked up and extrudes the spring 15 and acts on the inductance shell 11 through the spring 15, the inductance shell 11 moves upwards and acts on the inductance body 14 in the inductance shell to generate pressure inductance, meanwhile, the inductance shell 11 transmits extrusion to the inductance circuit board 2 under the extrusion of the spring 15, the inductance circuit board 2 displaces and acts on the other inductance body 14 to generate environment reference data, one group of pressure data and the other group of environment reference data are transmitted to the singlechip 4 through the lead 3, and differential signals can be obtained through the calculation 4 comparison of the singlechip, so that the performance of better temperature drift resistance and electromagnetic dry winding resistance is realized, when the pressure data value reaches the preset value, the pressure cooker reduces firepower, and the pressure in the cooker is correspondingly reduced after the firepower is reduced.

Through setting up two sets of inductance body 14, connect two sets of inductance body 14 on same inductance circuit board 2 and make up, through 18 activities of thimble drive inductance shell 11 act on a set of inductance body 14, and through the activity of inductance shell 11, drive inductance circuit board 2 activities, act on another group of inductance body 14, through the work of inductance body 14 combination of two sets of different positions, acquire two sets of data, a set of pressure data, another is the environmental benchmark data, through singlechip 4 calculation comparison, can acquire differential signal, have better resistance to temperature drift and electromagnetism and do the performance of winding, avoid under the single point test pressure condition, the pressure data test is not accurate enough, guarantee the stability and the accuracy of normal pressure data, this inductance type pressure sensor's measurement accuracy has effectively been improved.

Example 2: a combined inductance type pressure cooker pressure sensor comprises an inductance circuit board 2, two symmetrical inductance bodies 14 are arranged below the inductance circuit board 2, a metal shielding cup 16 is arranged under one inductance body 14, the lower end of the metal shielding cup 16 is directly connected with a measured object 20, and the metal shielding cup 16 is made of metal materials such as aluminum, iron, copper and the like or magnetic materials.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature "on," "above" and "over" the second feature may include the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The foregoing shows and describes the basic principles, essential features, and advantages of the invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the description in the above embodiments and the description is only preferred examples of the present invention, and is not intended to limit the present invention, and that the present invention can have various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications all fall into the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A combined inductance pressure cooker pressure sensor, comprising a sensor housing (1), characterized in that: the sensor comprises a sensor shell (1), and is characterized in that a first element groove (6) is formed in the top of the sensor shell (1), the bottom wall of the first element groove (6) penetrates through the sensor shell (1) to form a thimble hole (7), an inductance shell (11) and a metal shielding cup (16) are sequentially arranged in the first element groove (6) from top to bottom, an inductance body (14) is arranged in the inductance shell (11), a spring (15) is arranged in the metal shielding cup (16), the spring (15) is abutted to the inductance shell (11), a thimble (18) penetrating through the thimble hole (7) is arranged at the bottom of the metal shielding cup (16), the inductance body (14) is connected with an inductance circuit board (2), the inductance circuit board (2) is connected with a lead (3), a connecting end (5) is arranged at the tail end of the lead (3), a second element groove (9) is further formed in the top of the sensor shell (1), the inductor is characterized in that another inductor body (14) is arranged in the second element groove (9), the other inductor body (14) is connected with the inductor circuit board (2), and the lead (3) is provided with the single chip microcomputer (4).

2. The combined induction pressure cooker pressure sensor of claim 1 wherein: the sensor comprises a sensor shell (1), and is characterized in that an installation top groove (8) is formed in the top of the sensor shell (1), an inductance circuit board (2) is arranged in the installation top groove (8), and the inductance circuit board (2) is fixed in the installation top groove (8) through a screw (19).

3. The combined induction pressure cooker pressure sensor of claim 1 wherein: the metal shielding cup (16) is slidably mounted in the first element groove (6), and the ejector pin (18) penetrates through the metal shielding cup (16) and is fixed in the metal shielding cup (16).

4. The combined induction pressure cooker pressure sensor of claim 3 wherein: a bedplate (17) is formed at one end of the thimble (18) positioned at the outer side of the metal shielding cup (16), and the bedplate (17) is contacted with the bottom of the metal shielding cup (16).

5. The combined induction pressure cooker pressure sensor of claim 4 wherein: the lower pot head of spring (15) is established and is installed on the top of thimble (18), the bottom of inductance housing (11) forms inside caulking groove (13) sunken upwards, the upper end of spring (15) is spacing to be set up in inside caulking groove (13).

6. The combined induction pressure cooker pressure sensor of claim 5 wherein: an upper port of the inductance shell (11) forms an outward outer edge (12), and the outer diameter of the outer edge (12) is larger than the caliber of the first element groove (6).

7. The combined induction pressure cooker pressure sensor of claim 2 wherein: and a lead groove (10) is formed in one side of the mounting top groove (8), and the lead groove (10) is positioned in one side of the second component groove (9).

8. The combined induction pressure cooker pressure sensor of claim 1 wherein: including inductance circuit board (2), inductance body (14) of two symmetries are installed to inductance circuit board (2) below, one be equipped with metallic shield cup (16) under inductance body (14), metallic shield cup (16) lower extreme lug connection has testee (20), metallic shield cup (16) material is for metal material or magnetic material such as aluminium, iron, copper.