CN110118627A - Pressure-detecting device, kitchen appliance for kitchen appliance - Google Patents
Pressure-detecting device, kitchen appliance for kitchen appliance Download PDFInfo
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- CN110118627A CN110118627A CN201810117213.0A CN201810117213A CN110118627A CN 110118627 A CN110118627 A CN 110118627A CN 201810117213 A CN201810117213 A CN 201810117213A CN 110118627 A CN110118627 A CN 110118627A
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- detecting device
- kitchen appliance
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- 230000006698 induction Effects 0.000 claims abstract description 92
- 238000001514 detection method Methods 0.000 claims abstract description 54
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 46
- 238000009434 installation Methods 0.000 claims abstract description 22
- 238000006073 displacement reaction Methods 0.000 claims abstract description 11
- 230000008859 change Effects 0.000 claims abstract description 6
- 230000002093 peripheral effect Effects 0.000 claims description 19
- 239000003990 capacitor Substances 0.000 claims description 9
- 230000001939 inductive effect Effects 0.000 claims description 9
- 230000035699 permeability Effects 0.000 claims description 6
- 238000012360 testing method Methods 0.000 claims description 6
- 230000033001 locomotion Effects 0.000 claims description 4
- 238000010411 cooking Methods 0.000 description 25
- 238000010586 diagram Methods 0.000 description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 11
- 238000004851 dishwashing Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 230000035945 sensitivity Effects 0.000 description 6
- 230000008901 benefit Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 239000012528 membrane Substances 0.000 description 3
- 206010057855 Hypotelorism of orbit Diseases 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
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- 230000005923 long-lasting effect Effects 0.000 description 2
- 230000005389 magnetism Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 208000010086 Hypertelorism Diseases 0.000 description 1
- 206010020771 Hypertelorism of orbit Diseases 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
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- 230000005611 electricity Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
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- 229910000859 α-Fe Inorganic materials 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L9/00—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means
- G01L9/08—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means by making use of piezoelectric devices, i.e. electric circuits therefor
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
The invention discloses a kind of pressure-detecting device for kitchen appliance, kitchen appliance, the pressure-detecting device includes: pedestal, and the pedestal has tracting pressuring hole；Lid, the lid and the pedestal limit accommodating chamber；The accommodating chamber is divided into installation cavity, pressure chamber by rigid membrance, the rigid membrance, and the rigid membrance is configured to according to the pressure change of the pressure chamber and deformation occurs；Magnetic part, the magnetic part are moved according to the deformation of the rigid membrance；Induction pieces, for incuding the displacement of the magnetic part；Detection unit, the displacement information for being sensed according to the induction pieces obtain the pressure in the pressure chamber.Pressure-detecting device according to an embodiment of the present invention for kitchen appliance advantageously reduces cost using rigid membrance, promotes detection accuracy, durability and use reliability.
Description
Technical field
The present invention relates to kitchen appliance technical fields, fill more particularly, to a kind of pressure detecting for kitchen appliance
It sets, kitchen appliance.
Background technique
Active pressure sensor in the related technology needs to connect power supply line by power supply power supply, and application is limited, nothing
Method meets passive requirement；There is passive pressure sensor in the related technology to realize using wireless power technology again, reads signal
Generally agreement, circuit complexity, higher cost are unable to satisfy the requirement of product low cost by wireless communication.
Summary of the invention
The present invention is directed at least solve one of the technical problems existing in the prior art.For this purpose, the present invention proposes a kind of use
It is high in the detection accuracy of the pressure-detecting device of kitchen appliance, the pressure-detecting device, have the advantages that passive, wireless.
The present invention also proposes a kind of kitchen appliance with above-mentioned pressure-detecting device.
The pressure-detecting device for kitchen appliance of embodiment according to a first aspect of the present invention, comprising: pedestal, the base
Seat tool has tracting pressuring hole, and the tracting pressuring hole is suitable for being connected with the chamber of testing pressure；Lid, the lid are fastened on the pedestal
And accommodating chamber is limited with the pedestal；Rigid membrance, the rigid membrance are set in the accommodating chamber and by the accommodating chamber
The pressure chamber for being divided into installation cavity, being connected with the tracting pressuring hole, the rigid membrance are configured to the pressure according to the pressure chamber
Power changes and deformation occurs；Magnetic part, the magnetic part are set to the installation cavity and connect with the rigid membrance according to institute
It states the deformation of rigid membrance and moves；Induction pieces, the induction pieces are located in the installation cavity, for incuding the magnetic part
Displacement；Detection unit, the detection unit are connected with the induction pieces, the displacement information for being sensed according to the induction pieces
Obtain the pressure in the pressure chamber.
Pressure-detecting device according to an embodiment of the present invention for kitchen appliance, can in real time and be accurately detected to
Measuring pressure realizes the detection to kitchen appliance working condition, guarantees the normal work of kitchen appliance, and use reliability is more
It is high, more longlasting.
According to one embodiment of present invention, the magnetic part is magnetic core, and the induction pieces are to be coated at the magnetic core
Induction coil.
Optionally, the distance between the outside of the magnetic core and the inside of the induction coil are greater than 0.1mm；The magnetism
Initial permeability relative temperature coefficient α μ ir, the α μ ir < 25 × 10 of part-6/℃。
According to one embodiment of present invention, the lid is equipped with towards the side of the installation cavity towards the rigid film
The mounting post that piece extends, the induction pieces are installed on the mounting post；The middle part of the mounting post has axially extending along its
Pilot hole, the magnetic part can be moved along the length direction of the pilot hole.
Optionally, the lid has opening, and the mounting post is set to the opening and in the position of the opening
It is adjustable.
The inner wall of further embodiment according to the present invention, the outer peripheral edge of the rigid membrance and the accommodating chamber, which seals, to be connected
It connects, and the rigid membrance and the pedestal limit the pressure chamber.
Optionally, one in the pedestal and the lid is equipped between the outer peripheral edge of the rigid membrance and compresses
Part, another in the pedestal and the lid pass through first seal sealing between the outer peripheral edge of the rigid membrance and connect
It connects；Wherein, the outer peripheral edge of the rigid membrance has the flange bent towards the compressing member side, and the compressing member is used for will
The flange is pressed on the inner wall of the accommodating chamber.
Further embodiment according to the present invention, the rigid membrance include the first rigid membrance and the second rigid membrance,
The pressure chamber is limited between first rigid membrance and second rigid membrance, wherein first rigid membrance
It is connect with one in second rigid membrance with the pedestal, in first rigid membrance and second rigid membrance
Another connect with the magnetic part.
Optionally, the middle part of first rigid membrance has fixed part, and the fixed part and the pedestal are removably
Connection；And/or the fixed part is connect with the base thread；And/or the fixed part forms column, and the fixed part
Middle part have along its axially extending channel to be connected to the tracting pressuring hole and the pressure chamber；And/or the fixed part and institute
It states and is tightly connected between pedestal by second seal.
Optionally, at least part cross sectional shape of the rigid membrance is one or both of waveform, fold-line-shaped
Combination.
Further embodiment according to the present invention, the detection unit include: capacitor, the capacitor and the inductance coil
Electrical connection is to constitute resonant tank；First induction coil, first induction coil are connected in the resonant tank；Second sense
Answer coil, second induction coil and the first induction coil mutual induction, second induction coil is according to described the
The voltage signal or current signal of one induction coil generate inductive signal；Detection components, the detection components and second sense
Coil is answered to be electrically connected, for detecting the frequency of the inductive signal, with the resonance according to the frequency acquisition of the inductive signal
The resonance frequency in circuit, and the pressure in the pressure chamber is obtained according to the resonance frequency of the resonant tank.
Optionally, the distance between first induction coil and second induction coil 1-20mm.
The kitchen appliance of embodiment according to a second aspect of the present invention, including being used for kitchen electricity according to above-described embodiment
The pressure-detecting device of device.
Additional aspect and advantage of the invention will be set forth in part in the description, and will partially become from the following description
Obviously, or practice through the invention is recognized.
Detailed description of the invention
Above-mentioned and/or additional aspect of the invention and advantage will become from the description of the embodiment in conjunction with the following figures
Obviously and it is readily appreciated that, in which:
Fig. 1 is the structural schematic diagram of pressure-detecting device according to an embodiment of the invention；
Fig. 2 is the structural schematic diagram of the rigid membrance of pressure-detecting device shown in Fig. 1；
Fig. 3 is the rigid membrance of pressure-detecting device shown in Fig. 1 and the connection schematic diagram of compressing member；
Fig. 4 is the structural schematic diagram of the pressure-detecting device of another embodiment according to the present invention；
Fig. 5 is the structural schematic diagram of the rigid membrance of pressure-detecting device shown in Fig. 4；
Fig. 6 is the structural schematic diagram of pressure-detecting device in accordance with another embodiment of the present invention；
Fig. 7 is the structural schematic diagram of the rigid membrance of pressure-detecting device shown in Fig. 6；
Fig. 8 is the circuit diagram of pressure-detecting device according to an embodiment of the invention；
Fig. 9 is the energizing circuit work block diagram of pressure-detecting device according to an embodiment of the invention；
Figure 10 is the measuring circuit work block diagram of pressure-detecting device according to an embodiment of the invention；
P-f curve graph when Figure 11 is pressure-detecting device according to an embodiment of the present invention work；
Figure 12 is the structural schematic diagram of kitchen appliance according to an embodiment of the invention；
Figure 13 is the structural schematic diagram of kitchen appliance in accordance with another embodiment of the present invention；
Figure 14 is the structural schematic diagram of the kitchen appliance of another embodiment according to the present invention；
Figure 15 is the cross-sectional view of structure shown in Figure 14.
Appended drawing reference:
Pressure-detecting device 100, installation cavity 101, pressure chamber 102,
Pedestal 10, tracting pressuring hole 11,
Lid 20, opening 21, mounting post 22, pilot hole 221,
Rigid membrance 30,
First rigid membrance 301, fixed part 3011, channel 3012, the second rigid membrance 302,
Carrier 31, variant part 32, interconnecting piece 33, flange 331,
Magnetic part 41, induction pieces 42, compressing member 43,
First seal 51, second seal 52,
Cooking apparatus 600, pot body 61, cooking cavity 611, pot cover 62,
Dish-washing machine 700, washing cavities 701, handle 71, water tank 72, liner 721, detection hole 722.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, and for explaining only the invention, and is not considered as limiting the invention.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside", " up time
The orientation or positional relationship of the instructions such as needle ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " be orientation based on the figure or
Positional relationship is merely for convenience of description of the present invention and simplification of the description, rather than the device or element of indication or suggestion meaning must
There must be specific orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.In addition, limit
There is the feature of " first ", " second " to can explicitly or implicitly include one or more of the features surely.Of the invention
In description, unless otherwise indicated, the meaning of " plurality " is two or more.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
The pressure-detecting device 100 according to an embodiment of the present invention for kitchen appliance is described below with reference to Fig. 1-Figure 11.
As shown in Fig. 1-Fig. 7, the pressure-detecting device 100 according to an embodiment of the invention for kitchen appliance is wrapped
It includes: pedestal 10, lid 20, rigid membrance 30, magnetic part 41, induction pieces 42 and detection unit (not shown).It needs exist for illustrating
, " magnetic part 41 " is a kind of permeability magnetic material part, and magnetic part 41 itself is without magnetic, such as magnetic part 41 can be ferrite.
Pedestal 10 has tracting pressuring hole 11, and tracting pressuring hole 11 is suitable for being connected with the chamber of testing pressure.Lid 20 is fastened on pedestal
Accommodating chamber is limited on 10 and with pedestal 10.Rigid membrance 30 is set in accommodating chamber and accommodating chamber is divided into the peace being spaced apart
It behave affectedly 101 and pressure chamber 102, pressure chamber 102 and tracting pressuring hole 11 are connected, and rigid membrance 30 is configured to according to pressure chamber 102
Pressure change and deformation occurs.
Magnetic part 41 is set to installation cavity 101 and connect with rigid membrance 30, to be moved according to the deformation of rigid membrance 30
It is dynamic.Induction pieces 42 are located in installation cavity 101, the displacement for induced magnetism part 41.Detection unit is connected with induction pieces 42, is used for
The pressure in pressure chamber 102 is obtained according to the displacement information that induction pieces 42 sense.
If applying pressure-detecting device 100 in cooking apparatus, the pot cover or pot of cooking apparatus can be installed in
On body, and the tracting pressuring hole of pressure-detecting device 100 11 is connected with the cooking cavity of cooking apparatus.When work, when in cooking cavity
Pressure when changing, pressure acts on rigid membrance 30, and pushing rigid membrance 30, deformation occurs, to drive magnetic part
41 is mobile relative to induction pieces 42, and thus detection unit can be obtained according to 41 displacement information of magnetic part that induction pieces 42 sense
Pressure in pressure chamber 102, i.e. pressure in acquisition cooking cavity.
Pressure-detecting device in the related technology uses rubber diaphragm, when rubber diaphragm moves between the inner wall of accommodating chamber
Frictional force it is larger, motion delay is big, can be affected caused by the output accuracy of pressure-detecting device, and in high temperature
Under use environment, temperature drift is larger.The application replaces rubber diaphragm by using rigid membrance 30, can save elastic element (example
Such as spring), number of components is advantageously reduced, reduces cost, and the temperature drift of rigid membrance 30 is small, is conducive to adherence pressure detection
The precision of device 100 can also promote durability and use reliability.
Therefore, the pressure-detecting device 100 according to an embodiment of the present invention for kitchen appliance, can in real time and accurately
It detects testing pressure, realizes the detection to kitchen appliance working condition, guarantee the normal work of kitchen appliance, and use can
It is higher, more longlasting by property.
An optional embodiment according to the present invention, magnetic part 41 can form hollow structure, can also form solid knot
Structure, structure is simple, can be set according to actual needs into different structure or shape.
An optional embodiment according to the present invention, magnetic part 41 are magnetic core, and induction pieces 42 are the induction for being coated at magnetic core
Coil.Induction coil is passed through when magnetic core is mobile, exports an inductance, i.e., the different air pressures in pressure chamber 102 are corresponding different
Magnetic core position, thus according to magnetic core displacement survey pressure chamber 102 in pressure.By using the magnetic core of Low Drift Temperature, make temperature
Degree drift is small, to improve the detection accuracy of pressure-detecting device 100, the inductance coil of big sensibility reciprocal can be used, to improve
Output sensitivity.
In some instances, the distance between the outside of magnetic core and the inside of induction coil are greater than 0.1mm.Preferably, magnetic
The distance between outside and the inside of induction coil of core are greater than 0.3mm.For example, the outside of magnetic core and the inside of inductance coil exist
The distance radially of inductance coil can be 0.5mm, 1mm etc..
As a result, by the way that the gap between inductance coil and magnetic core is limited to above range, it can prevent inductance coil from hindering
Hinder magnetic core to move, reduce the deformation drag of rigid membrance 30, the sensitivity of rigid membrance 30 is promoted, to be conducive to adherence pressure
The detection accuracy of detection device 100.Therefore, the signal output of the pressure-detecting device 100 is sluggish small, high sensitivity, detection essence
Degree is high.
In some instances, initial permeability relative temperature coefficient α μ ir, the α μ ir < 25 × 10 of magnetic part 41-6/℃.Magnetic
The initial permeability relative temperature coefficient of property part 41 is lower, the magnetic field of magnetic part 41 be influenced by temperature it is smaller, therefore, above-mentioned knot
The magnetic part 41 of structure can reduce influence of the chamber room temperature of testing pressure to 100 output signal of pressure-detecting device, thus
The accuracy in detection of detection unit can be promoted, and then improves the detection accuracy of pressure-detecting device 100.Preferably, magnetic
The initial permeability relative temperature coefficient α μ ir of part 41 is less than 10 × 10-6/℃。
As shown in Fig. 1, Fig. 4 and Fig. 6, according to one embodiment of present invention, the side of lid 20 towards installation cavity 101 is set
There is the mounting post 22 extended towards rigid membrance 30, induction pieces 42 are installed on mounting post 22.Magnetic part 41 can be relative to installation
Column 22 is mobile.For example, magnetic part 41 be column magnetic core, induction pieces 42 be induction coil, induction coil be coated at mounting post 22 and
Positioned at the outside of magnetic core, and magnetic part 41 can be located in the middle part pilot hole 221 of mounting post 22.Certainly, magnetic part 41 can also
Induction pieces 42 are coated to form cyclic annular and magnetic part 41.
In some instances, the middle part of mounting post 22 has along its axially extending pilot hole 221, and magnetic part 41 can be along leading
It is mobile to the length direction in hole 221.It, can be to the movement of magnetic part 41 as a result, by the way that pilot hole 221 is arranged in mounting post 22
Track is defined, and guarantees that linear movement may be implemented in magnetic part 41, to improve the detection accuracy of pressure-detecting device 100.
In some instances, lid 20 has opening 21, and mounting post 22 is set to the position at opening 21 and at opening 21
It is adjustable.For example, the lateral wall of mounting post 22 is equipped with screw thread, it is equipped with and the threaded adapter in mounting post 22 at the opening 21 of lid 20
Screw thread, so as to adjust initial position of the induction pieces 42 relative to magnetic part 41, and by adjusting induction pieces 42 in spy
The position in level pressure force reaches accurate calibration, the output accuracy of adherence pressure detection device 100；If produced in enormous quantities,
It can guarantee that the consistency of the output signal of batch pressure-detecting device 100 is high, interchangeability is strong.
As Figure 1-Figure 5, according to one embodiment of present invention, the inner wall of the outer peripheral edge of rigid membrance 30 and accommodating chamber
It is tightly connected, and rigid membrance 30 and pedestal 10 limit pressure chamber 102.
In some instances, as shown in figures 1 and 3, lid 20 is set to the top of pedestal 10 and is tightly connected with pedestal 10,
Rigid membrance 30 is located in accommodating chamber and is tightly connected with the inner sidewall of accommodating chamber, to accommodating chamber is separated into arranged up and down
Installation cavity 101 and pressure chamber 102, i.e. installation cavity 101 are limited by lid 20 and rigid membrance 30, and pressure chamber 102 is by pedestal 10
It is limited with rigid membrance 30, structure is simple, easy for installation.
In some instances, one in pedestal 10 and lid 20 is equipped with compressing member between the outer peripheral edge of rigid membrance 30
43, another in pedestal 10 and lid 20 is tightly connected between the outer peripheral edge of rigid membrance 30 by first seal 51.
As shown in Figure 1-Figure 3, in some specific examples, compressing member 43 is formed as steel loop, and compressing member 43 is located at rigidity
Between diaphragm 30 and lid 20, and first seal 51 forms sealing ring, and first seal 51 is located at rigid membrance 30 and base
Between seat 10.
When installation, lid 20 is fastened on pedestal 10, and lid 20 only supports compressing member 43, so that compressing member 43 is pressed on
The outer peripheral edge of the upper surface of rigid membrance 30 makes the outer peripheral edge of the lower surface of rigid membrance 30 compress sealing ring, and then guarantees rigid
The sealed connection of property diaphragm 30 and pedestal 10.
Optionally, compressing member 43 is weldingly connected with rigid membrance 30, to simplify assembling procedure, improves production efficiency.When
So, the material for preparing of compressing member 43 is not limited to steel, and compressing member 43 can also be integrally formed with lid 20 or compressing member 43 is distinguished
Independently of lid 20 and rigid membrance 30.
As shown in Figure 4 and Figure 5, in some instances, the outer peripheral edge of rigid membrance 30 has towards 43 1 lateral bending of compressing member
The flange 331 of folding, compressing member 43 are used to for flange 331 being pressed on the inner wall of accommodating chamber.
Specifically, when pressure-detecting device 100 assembles, lid 20 is fastened on pedestal 10, and lid 20 is made only to support compressing member
43, to compressing member 43 is pressed at the outer peripheral edge of rigid membrance 30, and then it is tightly connected rigid membrance 30 and pedestal 10,
Guarantee the leakproofness of pressure chamber 102.Also, the flange 331 at 30 outer peripheral edge of rigid membrance can also be pressed on by compressing member 43
The side wall inner sidewall of pedestal 10 (for example, in Fig. 1) of accommodating chamber, prevents rigid membrance 30 to be detached from compressing member when deformation occurs
43, to improve the installation reliability of rigid membrance 30, it is further ensured that the leakproofness of pressure chamber 102.
As a result, by using the rigid membrance 30 with flange 331, rigid membrance 30 can be made to fasten compressing member 43, nothing
It need to be welded with compressing member 43, bearing capacity is more preferable, and use reliability is higher.
As shown in Figure 6 and Figure 7, according to still another embodiment of the invention, rigid membrance 30 includes the first rigid membrance 301
With the second rigid membrance 302, the outer peripheral edge of the outer peripheral edge of the first rigid membrance 301 and the second rigid membrance 302 is tightly connected (example
Such as welding), so as to limit pressure chamber 102 between the first rigid membrance 301 and the second rigid membrance 302.Wherein, the first rigidity
One in diaphragm 301 and the second rigid membrance 302 connect with pedestal 10, the first rigid membrance 301 and the second rigid membrance 302
In another connect with magnetic part 41, connection is reliable.
When work, the first rigid membrance 301 and second rigid membrance 302 can deformation occurs together obtains double
Displacement further increases the signal output sensitivity of pressure-detecting device 100.
In some instances, the first rigid membrance 301 is connect with pedestal 10, and the second rigid membrance 302 connects with magnetic part 41
It connecing, wherein the middle part of the first rigid membrance 301 has fixed part 3011, and fixed part 3011 and pedestal 10 are detachably connected, from
And facilitates the installation of the first rigid membrance 301 and change, and is easy to connect.
In some instances, 3011 shape column of fixed part, and the lateral wall of fixed part 3011 have screw thread with pedestal
10 are threadedly coupled, and further, are tightly connected between the lateral wall and pedestal 10 of fixed part 3011 by second seal 52, from
And guarantee the connection reliability and connection sealing of fixed part 3011 Yu pedestal 10.Certainly, between fixed part 3011 and pedestal 10
It can also be attached using other connection types, such as snap fit.
In some instances, fixed part 3011 forms column, and the middle part of fixed part 3011 is with axially extending along its
Channel 3012 is to be connected to tracting pressuring hole 11 and pressure chamber 102.If applying the pressure-detecting device 100 in cooking apparatus, culinary art
Intracavitary gas can be entered in pressure chamber 102 by tracting pressuring hole 11, channel 3012, to make the first rigid membrance 301 and the
Deformation occurs for two rigid membrances 302, and then drives magnetic part 41 mobile relative to induction pieces 42.
In some instances, rigid membrance 30 is metallic membrane, and the durability and better reliability of metallic membrane are conducive to
The service life of adherence pressure detection device 100, and metallic membrane temperature drift is smaller, it can be with adherence pressure detection device 100
Detection accuracy.
In some instances, at least part cross sectional shape of rigid membrance 30 be one of waveform, fold-line-shaped or
Two kinds of combinations.
Specifically, rigid membrance 30 includes carrier 31, the variant part successively arranged from inside to outside along the radial direction of accommodating chamber
32 and interconnecting piece 33, i.e. carrier 31 is located at the middle part of rigid membrance 30 to connect with magnetic part 41, i.e., magnetic part 41 is located at appearance
Receive the middle part of chamber, variant part 32 forms annular and the inner ring of variant part 32 is connect with the outer peripheral edge of carrier 31,33 shape of interconnecting piece
It circularizes and the inner ring of interconnecting piece 33 is connect with the outer ring of variant part 32, and compressing member 43 presses the interconnecting piece 33 of rigid membrance 30
It is located in the first seal 51 on pedestal 10.
In some instances, at least part cross sectional shape of variant part 32 forms waveform or fold-line-shaped, certainly, becomes
At least part cross-sectional shape in shape portion 32 can also form the combined shaped of waveform and fold-line-shaped.
As a result, by by least part cross sectional shape of rigid membrance 30 be arranged waviness, in fold-line-shaped at least
One kind, can use rigid membrance 30, deformation occurs according to the pressure in pressure chamber 102, thus adherence pressure detection device 100
Measurement sensitivity.
As Figure 8-Figure 10, further embodiment, detection unit include: capacitor C, first line of induction according to the present invention
Enclose L0, the second induction coil Lm and detection components.
Capacitor C is electrically connected with inductance coil L1 to constitute resonant tank.First induction coil L0 is connected in resonant tank.
Second induction coil Lm and the first induction coil L0 mutual induction, the second induction coil Lm is according to the voltage of the first induction coil L0
Signal or current signal generate inductive signal.Detection components are electrically connected with the second induction coil Lm, for detecting inductive signal
Frequency, to be obtained according to the resonance frequency of the frequency acquisition resonant tank of inductive signal, and according to the resonance frequency of resonant tank
Pressure in pressure chamber 102.
Pressure in pressure chamber 102 acts on rigid membrance 30, brings it about deformation and pushes magnetic part 41 mobile, magnetic
When moving, the inductance value of inductance coil L1 changes part 41, and resonance, the i.e. resonance frequency of resonant tank occur for resonant tank
It changes, so that excitation the first induction coil L0 and the second induction coil Lm incudes mutually, resonance is obtained by sample circuit
Frequency.
By the first induction coil L0 and second line of induction that mutual induction is arranged between resonant tank and detection components
Enclose Lm, it can be ensured that resonant tank can still obtain the resonance frequency letter of resonant tank in the case where being spaced apart with detection components
Breath.Since the inductance output signal of the inductance coil L1 of pressure-detecting device 100 changes with the indoor pressure change of chamber to be measured,
The resonance frequency for the resonant tank that can be obtained according to the P-f curve graph shown in Figure 11, to obtain the indoor pressure of chamber to be measured.
The first induction coil L0 and the second induction coil Lm mutual induction obtain signal as a result,, can be with without directly contact
Prevent detection components from bringing inconvenience with resonant tank hypotelorism for installation.Furthermore the first induction coil L0 and second line of induction
Enclose Lm and use separate design, i.e. connectionless line, reliable signal transmission when can meet product work therebetween, realize it is low at
Originally, high-acruracy survey.
Therefore, pressure-detecting device 100 according to an embodiment of the present invention can be realized simultaneously passive, wireless pressure and survey
Function is measured, is designed conducive to the structure of product.
Above-mentioned inductance coil L1 can use big sensibility reciprocal inductance, be conducive to the sensitivity for improving signal output, inductor wire
The hollow sensibility reciprocal for enclosing L1 is 1-3mH.Magnetic part 41 can use Low Drift Temperature magnetic core, make the output signal of pressure-detecting device 100
Temperature drift it is small.Sample circuit can occur for frequency for detection components, and inductance coil L1 inductance when magnetic part 41 is mobile is sent out
Changing, signal realize wireless transmission by the first induction coil L0 and the second induction coil Lm.
Optionally, the distance between the first induction coil L0 and the second induction coil Lm are 1mm-20mm, on the one hand, first
Induction coil L0 and the second induction coil Lm hypotelorism, detection components are influenced by high temperature, are not only easily damaged, but also influence pressure
The detection accuracy of force checking device 100, on the other hand, if the first induction coil L0 and the second induction coil Lm hypertelorism, the
Induction between one induction coil L0 and the second induction coil Lm reduces, and equally will affect the inspection of pressure-detecting device 100
Precision is surveyed, the first induction coil L0 and the second induction coil Lm of above structure can be with the detections of adherence pressure detection device 100
Precision.
Preferably, the distance between the first induction coil L0 and the second induction coil Lm are 3mm-20mm, make pressure detecting
Device 100100 has the advantages that passive, wireless, is easily installed and pressure detecting.
In some instances, capacitor C connects the magnetic field to constitute resonant tank, around inductance coil L1 with inductance coil L1
Inductance coil L1 generates current signal when changing, and capacitor C and inductance coil L1 cooperation charges and discharges, in this process
The middle resonance for realizing circuit, detection components obtain testing pressure according to resonance frequency.Certainly, the present invention is not limited thereto, capacitor
It can also be in parallel with inductance coil.
To sum up, the structure of pressure-detecting device 100 according to an embodiment of the present invention is simple, compared to using rubber diaphragm
Pressure-detecting device, use reliability is higher, temperature drift is smaller, detection accuracy is high, high temperature resistance is good.
The kitchen appliance of embodiment according to a second aspect of the present invention is specifically described below with reference to Fig. 1-Figure 15.
Kitchen appliance according to an embodiment of the present invention includes the pressure detecting that kitchen appliance is used for described in above-described embodiment
Device 100.
Since the pressure-detecting device 100 according to an embodiment of the present invention for kitchen appliance has above-mentioned technique effect,
Therefore, kitchen appliance according to an embodiment of the present invention also has above-mentioned technique effect, i.e., by using the pressure of above-described embodiment
Detection device 100 can not only promote the accuracy of the pressure sensing result in kitchen appliance, guarantee the normal work of kitchen appliance
Make, and assembly efficiency can be promoted.
As shown in Fig. 1-Figure 12, an optional embodiment, kitchen appliance are cooking apparatus 600 according to the present invention.Specifically
Ground, cooking apparatus 600 include pot body 61, pot cover 62 and pressure-detecting device 100, define cooking cavity 611, pot cover in pot body 61
62 are movably located in pot body 61 to open and close cooking cavity 611, and pressure-detecting device 100 is mounted on pot cover 62, and
Pressure-detecting device 100 is connected to cooking cavity 611, for detecting the pressure in cooking cavity 611.100 nothing of pressure-detecting device
Line, passive, the cooking apparatus 600 especially suitable for Split-type pot cover 62.
Cooking apparatus 600 according to the present invention not only can be with by using the pressure-detecting device 100 of above-described embodiment
The accuracy of the pressure detecting of cooking apparatus 600 is promoted, guarantees the normal work of cooking apparatus 600, and assembly can be promoted
Efficiency.
In conclusion pressure-detecting device 100 according to an embodiment of the present invention, can accurately detect cooking for cooking apparatus 600
The pressure prepared food in chamber 611 improves the control precision of cooking apparatus 600, promotes the experience of user, 100 nothing of pressure-detecting device
Line, passive, the cooking apparatus 600 especially suitable for Split-type pot cover 62.
As shown in Fig. 1-Figure 11 and Figure 13-Figure 15, another optional embodiment, kitchen appliance are to wash according to the present invention
Bowl machine 700, the outside of dish-washing machine 700 are equipped with handle 71, and dish-washing machine 700 includes washing cavities 701, water tank 72, and water tank 72 has
Liner 721 and the detection hole 722 be connected with liner 721.
As shown in figure 13, in some instances, the bottom of water tank 72 has the detection hole 722 be connected with liner 721, pressure
Detection device 100 is located at the bottom of water tank 72 and is located at detection hole 722, to detect the hydraulic pressure of detection hole 722, to converse
Liquid level in water tank.
As shown in Figure 14 and Figure 15, in other examples, the bottom of water tank 72 has the detection hole be connected with liner
722, pressure-detecting device 100 is located at the top of water tank 72 and the tracting pressuring hole 11 of pressure-detecting device 100 is led with detection hole 722
It is logical, to detect the hydraulic pressure in water tank 72, thus the liquid level in the water tank that converts.
By using the pressure-detecting device 100 of above-described embodiment, the standard that hydraulic pressure detects in dish-washing machine can be not only promoted
True property guarantees the normal work of dish-washing machine, and can promote assembly efficiency.
Certainly, the type of kitchen appliance of the invention is not limited to cooking apparatus, dish-washing machine, can also be other electric appliances,
Such as water heater etc..
In conclusion kitchen appliance according to an embodiment of the present invention, the chamber to be measured that can accurately detect kitchen appliance is indoor
Air pressure or hydraulic pressure improve the control precision of kitchen appliance, promote the experience of user.
Other structures of pressure-detecting device and kitchen appliance (such as cooking apparatus, dish-washing machine) according to an embodiment of the present invention
At and operation be all for those of ordinary skills it is known, be not detailed herein.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " illustrative examples ",
The description of " example ", " specific example " or " some examples " etc. means specific features described in conjunction with this embodiment or example, knot
Structure, material or feature are included at least one embodiment or example of the invention.In the present specification, to above-mentioned term
Schematic representation may not refer to the same embodiment or example.Moreover, specific features, structure, material or the spy of description
Point can be combined in any suitable manner in any one or more of the embodiments or examples.
Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that: not
A variety of change, modification, replacement and modification can be carried out to these embodiments in the case where being detached from the principle of the present invention and objective, this
The range of invention is defined by the claims and their equivalents.
Claims (13)
1. a kind of pressure-detecting device for kitchen appliance characterized by comprising
Pedestal, the pedestal have tracting pressuring hole, and the tracting pressuring hole is suitable for being connected with the chamber of testing pressure；
Lid, the lid are fastened on the pedestal and limit accommodating chamber with the pedestal；
Rigid membrance, the rigid membrance are set in the accommodating chamber and the accommodating chamber are divided into installation cavity, is drawn with described
The pressure chamber of hole conducting is pressed, the rigid membrance is configured to according to the pressure change of the pressure chamber and deformation occurs；
Magnetic part, the magnetic part are set to the installation cavity and connect with the rigid membrance according to the shape of the rigid membrance
Become and moves；
Induction pieces, the induction pieces are located in the installation cavity, for incuding the displacement of the magnetic part；
Detection unit, the detection unit are connected with the induction pieces, the displacement information for being sensed according to the induction pieces
Obtain the pressure in the pressure chamber.
2. the pressure-detecting device according to claim 1 for kitchen appliance, which is characterized in that the magnetic part is magnetic
Core, the induction pieces are the induction coil for being coated at the magnetic core.
3. the pressure-detecting device according to claim 2 for kitchen appliance, which is characterized in that the outside of the magnetic core
The distance between inside of the induction coil is greater than 0.1mm；
Initial permeability relative temperature coefficient α μ ir, the α μ ir < 25 × 10 of the magnetic core-6/℃。
4. the pressure-detecting device according to claim 1 for kitchen appliance, which is characterized in that the lid is towards institute
The side for stating installation cavity is equipped with the mounting post extended towards the rigid membrance, and the induction pieces are installed on the mounting post；
The middle part of the mounting post has along its axially extending pilot hole, and the magnetic part can be along the length side of the pilot hole
To movement.
5. the pressure-detecting device according to claim 4 for kitchen appliance, which is characterized in that the lid, which has, to be opened
Mouthful, the mounting post is set to the opening and adjustable in the position of the opening.
6. the pressure-detecting device according to any one of claims 1-5 for kitchen appliance, which is characterized in that described
The inner wall of the outer peripheral edge of rigid membrance and the accommodating chamber is tightly connected, and the rigid membrance and the pedestal limit it is described
Pressure chamber.
7. the pressure-detecting device according to claim 6 for kitchen appliance, which is characterized in that the pedestal and described
One in lid is equipped with compressing member between the outer peripheral edge of the rigid membrance, another in the pedestal and the lid
It is tightly connected between the outer peripheral edge of the rigid membrance by first seal；
Wherein, the outer peripheral edge of the rigid membrance has the flange bent towards the compressing member side, and the compressing member is used for
The flange is pressed on to the inner wall of the accommodating chamber.
8. the pressure-detecting device according to any one of claims 1-5 for kitchen appliance, which is characterized in that described
Rigid membrance includes the first rigid membrance and the second rigid membrance, between first rigid membrance and second rigid membrance
The pressure chamber is limited,
Wherein, one in first rigid membrance and second rigid membrance connect with the pedestal, and described first just
Another in property diaphragm and second rigid membrance is connect with the magnetic part.
9. the pressure-detecting device according to claim 8 for kitchen appliance, which is characterized in that first rigid film
The middle part of piece has fixed part, and the fixed part and the pedestal are detachably connected；
And/or the fixed part is connect with the base thread；And/or the fixed part forms column, and the fixed part
Middle part have along its axially extending channel to be connected to the tracting pressuring hole and the pressure chamber；And/or the fixed part and institute
It states and is tightly connected between pedestal by second seal.
10. the pressure-detecting device according to any one of claims 1-5 for kitchen appliance, which is characterized in that institute
At least part cross sectional shape of rigid membrance is stated as the combination of one or both of waveform, fold-line-shaped.
11. being used for the pressure-detecting device of kitchen appliance according to any one of claim 2-5, which is characterized in that institute
Stating detection unit includes:
Capacitor, the capacitor are electrically connected with the inductance coil to constitute resonant tank；
First induction coil, first induction coil are connected in the resonant tank；
Second induction coil, second induction coil and the first induction coil mutual induction, second induction coil
Inductive signal is generated according to the voltage signal of first induction coil or current signal；
Detection components, the detection components are electrically connected with second induction coil, for detecting the frequency of the inductive signal,
With the resonance frequency of the resonant tank according to the frequency acquisition of the inductive signal, and according to the resonance of resonant tank frequency
Rate obtains the pressure in the pressure chamber.
12. the pressure-detecting device according to claim 11 for kitchen appliance, which is characterized in that first induction
The distance between coil and second induction coil 1-20mm.
13. a kind of kitchen appliance, which is characterized in that including being used for kitchen appliance described according to claim 1 any one of -12
Pressure-detecting device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810117213.0A CN110118627A (en) | 2018-02-06 | 2018-02-06 | Pressure-detecting device, kitchen appliance for kitchen appliance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810117213.0A CN110118627A (en) | 2018-02-06 | 2018-02-06 | Pressure-detecting device, kitchen appliance for kitchen appliance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110118627A true CN110118627A (en) | 2019-08-13 |
Family
ID=67519339
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810117213.0A Pending CN110118627A (en) | 2018-02-06 | 2018-02-06 | Pressure-detecting device, kitchen appliance for kitchen appliance |
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| CN (1) | CN110118627A (en) |
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| IT1261147B (en) * | 1993-12-30 | 1996-05-09 | Elbi Int Spa | ELECTRIC PRESSURE TRANSDUCER, PARTICULARLY FOR WASHING MACHINES |
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| CN106490968A (en) * | 2016-12-13 | 2017-03-15 | 美的集团股份有限公司 | Pressure cooking equipment and its pressure-detecting device |
| CN106618172A (en) * | 2016-12-13 | 2017-05-10 | 美的集团股份有限公司 | Pressure sensor and cooking utensil with same |
| CN107655615A (en) * | 2017-11-02 | 2018-02-02 | 美的集团股份有限公司 | Pressure-detecting device and kitchen appliance for kitchen appliance |
| CN107655613A (en) * | 2017-11-02 | 2018-02-02 | 美的集团股份有限公司 | Pressure-detecting device and kitchen appliance for kitchen appliance |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4254395A (en) * | 1979-12-26 | 1981-03-03 | Robert Bosch Gmbh | Electromechanical force converter for measuring gas pressure |
| CN87207455U (en) * | 1987-09-03 | 1988-04-27 | 上海自动化仪表一厂 | I-type diaphragm pressure actuator |
| IT1261147B (en) * | 1993-12-30 | 1996-05-09 | Elbi Int Spa | ELECTRIC PRESSURE TRANSDUCER, PARTICULARLY FOR WASHING MACHINES |
| JP2000019048A (en) * | 1998-08-31 | 2000-01-21 | Hitachi Ltd | Pressure-detecting device |
| JP2005241364A (en) * | 2004-02-25 | 2005-09-08 | Omron Corp | Pressure sensor |
| CN106490968A (en) * | 2016-12-13 | 2017-03-15 | 美的集团股份有限公司 | Pressure cooking equipment and its pressure-detecting device |
| CN106618172A (en) * | 2016-12-13 | 2017-05-10 | 美的集团股份有限公司 | Pressure sensor and cooking utensil with same |
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| CN107655613A (en) * | 2017-11-02 | 2018-02-02 | 美的集团股份有限公司 | Pressure-detecting device and kitchen appliance for kitchen appliance |
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Application publication date: 20190813 |