CN107655613A - Pressure-detecting device and kitchen appliance for kitchen appliance - Google Patents
Pressure-detecting device and kitchen appliance for kitchen appliance Download PDFInfo
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- CN107655613A CN107655613A CN201711065993.0A CN201711065993A CN107655613A CN 107655613 A CN107655613 A CN 107655613A CN 201711065993 A CN201711065993 A CN 201711065993A CN 107655613 A CN107655613 A CN 107655613A
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- pressure
- spring
- kitchen appliance
- detecting device
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- 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
- G01L9/10—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 variations in inductance, i.e. electric circuits therefor
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- General Physics & Mathematics (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
The invention discloses a kind of pressure-detecting device and kitchen appliance for kitchen appliance, pressure-detecting device includes：Housing, flexible sealing fin, magnetic part, inductance coil and detection unit, housing has first through hole and the second through hole, first through hole is suitable to turn on the chamber of testing pressure, the inner chamber of housing is separated into first chamber and second chamber by flexible sealing fin, flexible sealing fin deforms upon according to the pressure change of first chamber and second chamber, magnetic part moves according to the deformation of flexible sealing fin relative to inductance coil, and when magnetic part moves, the inductance value of inductance coil is set to change, detection unit is used for the pressure that first chamber is obtained according to the current inductance value of inductance coil.The pressure-detecting device for kitchen appliance according to embodiments of the present invention, connection line is simple, in real time and can be accurately detected testing pressure, ensure the normal work of kitchen appliance.
Description
Technical field
The present invention relates to kitchen appliance technical field, is filled more particularly, to a kind of pressure detecting for kitchen appliance
Put and kitchen appliance.
Background technology
Pressure sensor in correlation technique is connected using power line more, and assembling process is complex, and installation site is limited
Condition is more, and larger by high temperature interference effect, and accuracy of detection is relatively low.Further, the wireless pressure sensor in correlation technique
Realized by communications protocol, cost is higher.
The content of the invention
It is contemplated that at least solves one of technical problem present in prior art.
Therefore, the present invention proposes a kind of pressure-detecting device for kitchen appliance, the pressure-detecting device assembling side
Just, the scope of application is wider, and precision is higher, cost is low.
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, the pressure-detecting device
Including：There is first through hole and second to lead to for housing, flexible sealing fin, magnetic part, inductance coil and detection unit, the housing
Hole, the first through hole are suitable to turn on the chamber of testing pressure, and the flexible sealing fin is located in the housing with by described in
The inner chamber of housing is separated into the first chamber connected with the first through hole and the second chamber connected with second through hole, institute
Flexible sealing fin is stated to be configured to be deformed upon, the electricity according to the pressure change of the first chamber and the second chamber
Sense coil is located in the second chamber, the magnetic part be located in the second chamber and be connected with the flexible sealing fin with
Moved relative to the inductance coil according to the deformation of the flexible sealing fin, and when the magnetic part moves, made described
The inductance value of inductance coil changes, and the detection unit is connected with the inductance coil, for according to the inductance coil
Current inductance value obtain first chamber pressure.
Pressure-detecting device for kitchen appliance according to embodiments of the present invention, coordinated using inductance coil and magnetic part
Obtain the pressure value of first chamber, by electromagnetism field interactions between inductance coil and magnetic part, inductance coil without and magnetic
Property part directly contact or connect contact, simplify the connection line of pressure-detecting device, widened pressure-detecting device be applicable
Scope.Furthermore in real time and testing pressure can be accurately detected, realize the detection to kitchen appliance working condition, ensure kitchen
The normal work of room electrical equipment.
Pressure-detecting device according to an embodiment of the invention, the detection unit include：Electric capacity and detection components, institute
State electric capacity to electrically connect with the inductance coil to form resonant tank, the detection components are connected in the resonant tank, are used
Obtained in the resonant frequency for detecting the resonant tank, and according to the resonant frequency of the resonant tank in the first chamber
Pressure.
Pressure-detecting device according to an embodiment of the invention, the detection unit include：Electric capacity, first line of induction
Circle, the second induction coil and detection components, the electric capacity are electrically connected with the inductance coil to form resonant tank, and described first
Induction coil is connected in the resonant tank, second induction coil and the first induction coil mutual induction, described
Second induction coil generates induced signal, the detection components according to the voltage signal or current signal of first induction coil
Electrically connected with second induction coil, for detecting the frequency of the induced signal, with the frequency according to the induced signal
The resonant frequency of the resonant tank is obtained, and the pressure in the first chamber is obtained according to the resonant frequency of the resonant tank
Power.
Alternatively, the distance between first induction coil and second induction coil are 3mm-20mm.
According to one embodiment of present invention, the electric capacity is connected with the inductance coil.
Pressure-detecting device according to an embodiment of the invention, the initial permeability relative temperature coefficient of the magnetic part
α μ ir, α μ ir ＜ 25 × 10-6/℃。
Pressure-detecting device according to an embodiment of the invention, the second chamber is interior to be provided with spring, the spring quilt
It is configured to be compressed with the deformation of the flexible sealing fin in the flexible sealing fin deformation.
Alternatively, the magnetic part may move at the middle part of the inductance coil, and the lateral wall of the magnetic part and institute
State between the inner ring of inductance coil, between the inner ring of the spring outer ring and the inductance coil the spring radially
Distance is more than 0.3mm.
According to another embodiment of the invention, one end of the housing forms openend, and being provided with the openend can
Mobile regulating part, for adjusting the precompression of the spring.
Alternatively, the spring overcoat is on the regulating part, and in institute between the spring inner ring and the regulating part
The distance radially for stating spring is more than 0.1mm.
According to still another embodiment of the invention, the both ends of the spring respectively with the top of the magnetic part and described
The inwall connection of two chambers.
Alternatively, the top of the magnetic part is provided with spring base, and one end of the spring is supported on the spring base.
Further, one end of the spring be set on the spring base and the spring inner ring and the spring base it
Between in the distance radially of the spring be more than 0.3mm.
According to one embodiment of present invention, the both ends of the spring respectively with the flexible sealing fin and second chamber
The inwall of room connects and is arranged arrangement with the magnetic part.
According to the alternative embodiment of the present invention, the magnetic part forms the axially extending column along spring, described
Spring is set on the outside of the magnetic part.
According to the alternative embodiment of the present invention, the magnetic part forms the axially extending ring-type along spring, described
Magnetic part is set in the outside of the spring.
According to the alternative embodiment of the present invention, the middle part of the flexible sealing fin is provided with positioning support base, the bullet
Spring and the magnetic part are respectively supported on the positioning support base.
The kitchen appliance of embodiment according to a second aspect of the present invention, including it is used for kitchen electricity according to above-described embodiment
The pressure-detecting device of device.
Alternatively, the kitchen appliance is cooking apparatus, dish-washing machine.
The additional aspect and advantage of the present invention will be set forth in part in the description, and will partly become from the following description
Obtain substantially, or recognized by the practice of the present invention.
Brief description of the drawings
The above-mentioned and/or additional aspect and advantage of the present invention will become in the description from combination accompanying drawings below to embodiment
Substantially and it is readily appreciated that, wherein：
Fig. 1 is the structural representation of pressure-detecting device according to an embodiment of the invention；
Fig. 2 is the structural representation according to the pressure-detecting device of another embodiment of the invention；
Fig. 3 is the structural representation of pressure-detecting device in accordance with another embodiment of the present invention；
Fig. 4 is the circuit theory diagrams of pressure-detecting device according to an embodiment of the invention；
Fig. 5 is the structural representation of kitchen appliance according to an embodiment of the invention；
Fig. 6 is the structural representation of kitchen appliance in accordance with another embodiment of the present invention；
Fig. 7 is the structural representation according to the kitchen appliance of another embodiment of the invention；
Fig. 8 is the sectional view of the structure shown in Fig. 7.
Reference：
100：Pressure-detecting device；
10：Housing；11：First chamber；111：First through hole；12：Second chamber；121：Second through hole；
20：Flexible sealing fin；21：Position support base；
30：Inductance coil；40：Magnetic part；50：Spring；51：Spring base；52：Regulating part.
600：Cooking apparatus；61：Pot；611：Cooking cavity；62：Pot cover；
700：Dish-washing machine, 701：Washing cavities；71：Handle；72：Water tank, 721：Inner bag, 722：Detection hole.
Embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning to end
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
The embodiment of figure description is exemplary, is only used for explaining the present invention, and is not considered as limiting the invention.
In the description of the invention, it is to be understood that term " " center ", " length ", " thickness ", " on ", " under ",
The orientation or position relationship of the instruction such as " top ", " bottom " " interior ", " outer ", " axial direction ", " radial direction ", " circumference " are based on shown in the drawings
Orientation or position relationship, be for only for ease of the description present invention and simplify description, rather than instruction or imply signified device or
Element must have specific orientation, with specific azimuth configuration and operation, therefore be not considered as limiting the invention.This
Outside, " first " is defined, one or more this feature can be expressed or be implicitly included to the feature of " second ".In this hair
In bright description, unless otherwise indicated, " multiple " are meant that two or more.
In the description of the invention, it is necessary to illustrate, unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or be integrally connected；Can
To be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected by intermediary, Ke Yishi
The connection of two element internals.For the ordinary skill in the art, with concrete condition above-mentioned term can be understood at this
Concrete meaning in invention.
Below with reference to Fig. 1-Fig. 4 descriptions pressure-detecting device 100 for kitchen appliance according to embodiments of the present invention.
As Figure 1-Figure 4, the pressure-detecting device 100 for kitchen appliance according to embodiments of the present invention includes：Shell
Body 10, flexible sealing fin 20, magnetic part 40, inductance coil 30 and detection unit (not shown).Need exist for explanation, " magnetic
Property part 40 " is a kind of permeability magnetic material part, and magnetic part 40 itself is without magnetic, such as magnetic part 40 can be ferrite.
Chamber is defined in housing 10, there is the through hole 121 of first through hole 111 and second with chamber on housing 10,
Flexible sealing fin 20 is located in chamber, and the outer peripheral edge of flexible sealing fin 20 is connected with the internal perisporium sealing of housing 10 and divides chamber
First chamber 11 and second chamber 12 arranged spaced apart are divided into, first chamber 11 connects first through hole 111, and second chamber 12 connects
Logical second through hole 121, flexible sealing fin 20 change according to the pressure change of first chamber 11 and second chamber 12, example
Such as, when the pressure of first chamber 11 is larger, flexible sealing fin 20 moves towards second chamber 12, if on the contrary, second chamber 12
When pressure is larger, flexible sealing fin 20 moves towards first chamber 11.
Magnetic part 40 is located in second chamber 12 and is connected with flexible sealing fin 20, when flexible sealing fin 20 is with first chamber
11 and the pressure change of second chamber 12 and when producing deformation, magnetic part 40 moves, inductor wire with the deformation of flexible sealing fin 20
Circle 30 is located in second chamber 12, and inductance coil 30 coordinates with magnetic part 40, the generation of magnetic part 40 magnetic field, at inductance coil 30
Among magnetic field, when magnetic part 40 is moved, magnetic field is moved, magnetic field intensity and direction hair around inductance coil 30
Raw to change, thus the inductance value of inductance coil 30 changes, and detection unit is connected with inductance coil 30, and receives inductance coil
The inductance value information of 30 feedbacks, detection unit obtain the pressure of first chamber 11 according to the inductance value of inductance coil 30.
Thus, the pressure-detecting device 100 for kitchen appliance according to embodiments of the present invention, using inductance coil 30 and
Magnetic part 40 coordinates the pressure value for obtaining first chamber 11, passes through electromagnetic field phase interaction between inductance coil 30 and magnetic part 40
With inductance coil 30 contacts without directly contacting or connecting with magnetic part 40, simplifies the connecting line of pressure-detecting device 100
Road, the scope of application of pressure-detecting device 100 is widened.Furthermore in real time and testing pressure can be accurately detected, realized pair
The detection of kitchen appliance working condition, ensure the normal work of kitchen appliance.
According to an optional embodiment of the present invention, detection unit includes：Electric capacity and detection components, electric capacity and inductance coil
To form resonant tank, detection components are connected in resonant tank for 30 electrical connections, for detecting the resonant frequency of resonant tank, and
Pressure in first chamber 11 is obtained according to the resonant frequency of resonant tank.
Specifically, when magnetic part 40 moves, the inductance value of inductance coil 30 changes, and resonance, inspection occur for resonant tank
Survey component to be connected in resonant tank and detect the resonant frequency of resonant tank, detection components can be according to the resonance frequency of resonant tank
Rate calculates the inductance variations for obtaining inductance coil 30, and then can obtain the pressure value of first chamber 11, that is, obtains and treat pressure measurement
Power.
As shown in figure 4, according to another optional embodiment of the invention, detection unit includes：Electric capacity C, first line of induction
Enclosing L0, the second induction coil Lm and detection components, electric capacity C is electrically connected with inductance coil 30 (L1) to form resonant tank, and first
Induction coil L0 is connected in resonant tank, the second induction coil Lm and the first induction coil L0 mutual inductions, second line of induction
Lm is enclosed according to the generation of the first induction coil L0 voltage signal or current signal and the first induction coil L0 China i parts same frequency
The induced signal of rate, detection components electrically connect with the second induction coil Lm, for detecting the frequency of induced signal, with according to sensing
The resonant frequency of the frequency acquisition resonant tank of signal, and the pressure in first chamber 11 is obtained according to the resonant frequency of resonant tank
Power.
Similarly, in movement, the inductance value of inductance coil 30 changes magnetic part 40, and resonance occurs for resonant tank,
, can be with by setting the first induction coil L0 and the second induction coil Lm of mutual induction between resonant tank and detection components
Ensure can still to obtain the resonant frequency information of resonant tank between resonant tank and detection components in the case of being spaced apart.
Thus, the first induction coil L0 and the second induction coil Lm mutual inductions obtain signal, can be with without directly contact
Prevent detection components from being brought inconvenience with resonant tank hypotelorism for installation, the high temperature being also possible to prevent in the chamber of testing pressure
Steam damages detection components.Furthermore the first induction coil L0 and the second induction coil Lm use separate design, i.e., therebetween without
Connecting line, reliable signal transmission during product work can be met.
Above-mentioned inductance coil 30 can use big sensibility reciprocal inductance, be advantageous to improve the sensitivity of signal output, inductor wire
The hollow sensibility reciprocal of circle 30 is 1-3mH.Magnetic part 40 can use Low Drift Temperature magnetic core, make the output signal of pressure-detecting device 100
Temperature drift it is small.Flexible sealing fin 20 can use flexible membrane, so as to reach larger magnetic core displacement, improve signal output
Sensitivity.Detection components can be that sample circuit occurs for frequency, and the inductance when magnetic part 40 moves of inductance coil 30 becomes
Change, signal is realized by the first induction coil L0 and the second induction coil Lm and is wirelessly transferred.
Alternatively, 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 hypotelorisms, detection components are influenceed by high temperature, are not only easily damaged, and influence pressure
The accuracy of detection of force checking device 100, on the other hand, if the first induction coil L0 and the second induction coil Lm hypertelorisms, the
Induction between one induction coil L0 and the second induction coil Lm reduces, and can equally influence the inspection of pressure-detecting device 100
Precision is surveyed, the first induction coil L0 and the second induction coil Lm of said structure can be with the detections of adherence pressure detection means 100
Precision.
Preferably, the distance between the first induction coil L0 and the second induction coil Lm are 3mm-20mm, make pressure detecting
Device 100 has the advantages of passive, wireless, is easily installed and pressure detecting.
In some instances, electric capacity is connected with inductance coil 30 to form resonant tank, the magnetic field around inductance coil 30
Inductance coil 30 produces current signal when changing, and electric capacity coordinates with inductance coil 30 to be charged and discharged, in this process
The middle resonance for realizing loop, detection components obtain testing pressure according to resonant frequency.Certainly, the present invention is not limited thereto, electric capacity
Can also be in parallel with inductance coil 30.
In some instances, the initial permeability relative temperature coefficient of magnetic part 40 is 25 × 10-6/ of α μ ir, α μ ir ＜
℃.Preferably, α μ ir ＜ 3 × 10-6/ DEG C, the initial permeability temperature coefficient of magnetic part 40 is lower, and the magnetic field of magnetic part 40 is by temperature
The influence of degree is smaller, and therefore, the magnetic part 40 of said structure can reduce the chamber indoor temperature change generated in case of testing pressure to magnetic part
The influence in 40 magnetic fields, so as to lift the accuracy in detection of detection unit, and then improve the detection of pressure-detecting device 100
Precision.
As shown in Figure 1-Figure 3, according to one embodiment of present invention, spring 50, spring 50 are additionally provided with second chamber 12
It is configured to be compressed with the deformation of flexible sealing fin 20 in 20 deformation of flexible sealing fin.
In some instances, spring 50 is connected between the inwall of flexible sealing fin 20 and second chamber 12, at spring 50
In its pre-compressed state, one end of spring 50, which only abuts, touches flexible sealing fin 20, and the other end of spring 50, which stops abutting, touches housing 10
Internal face, spring 50 often promote flexible sealing fin 20 to be moved towards first chamber 11.
When testing pressure gradually increases, the pressure increase in first chamber 11, flexible sealing fin 20 continues extrusion spring
50 deformations so that the decrement of spring 50 gradually increases；When testing pressure reduces, spring 50 promotes flexible sealing fin 20 to recover
To origin-location.By setting spring 50, after the completion of ensureing kitchen appliance use, flexible sealing fin 20 returns to origin-location, is
It is convenient that the detection of next pressure provides, and prevents the persistent movement of flexible sealing fin 20 or initial position Different Effects pressure-detecting device
100 accuracy in detection.
In some instances, spring 50 can use non-magnetic high temperature stainless steel spring, so as to which sluggishness be controlled from 5%FS
1%FS is made, and then improves accuracy of detection, it is reproducible.
In some instances, magnetic part 40 may move at the middle part of inductance coil 30, and inductance coil 30 is formed as tubulose knot
Structure, magnetic part 40 are located at the inner side of inductance coil 30 and along the axially extending of inductance coil 30, and the lateral wall of magnetic part 40 with
Distance radially between the inner ring of inductance coil 30 in inductance coil 30 is more than 0.3mm, is advantageously implemented passive and wireless
Function.
For example, the inner ring of the lateral wall of magnetic part 40 and inductance coil 30 can be with the distance radially of inductance coil 30
For 0.5mm, 1mm etc., spring 50 can only be abutted with magnetic part 40 and touched, and can only be abutted and be touched with flexible sealing fin 20, and spring
50 is similar with magnetic part 40, is located at the inner side of inductance coil 30 and along the axially extending of inductance coil 30, and the outer ring of spring 50 with
Distance radially between the inner ring of inductance coil 30 in spring 50 is more than 0.3mm.
Thus, by being set between inductance coil 30 and magnetic part 40 and between inductance coil 30 and spring 50
0.5mm gap, it can not only prevent inductance coil 30 from hindering magnetic part 40 to move, moreover it is possible to prevent inductance coil 30 from hindering spring
50 is normal flexible, it is possible thereby to reduce the movable resistance of flexible sealing fin 20, and can lift the reset of flexible sealing fin 20
Sensitivity, be advantageous to the accuracy of detection of adherence pressure detection means 100.
Further, one end of housing 10 forms openend, moveable regulating part 52 is provided with openend, for adjusting
The precompression of spring 50 and/or the initial position of magnetic part 40.
Specifically, being axially movably located in openend along spring 50 of regulating part 52, it is right for adjusting spring 50
The precompression of magnetic part 40, thus obtain testing pressure for detection unit and provide conveniently, meanwhile, regulating part 52 can be adjusted
It is whole, the pressure detecting accuracy of further adherence pressure detection means 100.
In some instances, 52 adjusting screws of regulating part, adjusting screw can make pressure-detecting device 100 in high-volume
Nominal pressure detection means 100 exports during production, by batch signatures control errors within 1%FS, makes output signal uniformity
Height, interchangeability are strong.
As shown in figure 3, in the present embodiment, be enclosed on outside one end of spring 50 on regulating part 52, and the inner ring of spring 50 is with adjusting
Distance radially between section part 52 in spring 50 is more than 0.1mm, and specifically, at least a portion of regulating part 52 is formed as
Along the axially extending column of spring 50, and the overall diameter of the column is less than the interior diameter of spring 50, and spring 50 is set in column
In structure, and the distance between the interior sidewall surface of spring 50 and the outside wall surface of column structure of regulating part 52 are more than 0.1mm.It is preferred that
Ground, the distance radially between the inner ring of spring 50 and regulating part 52 in spring 50 are more than 0.3mm.
Spring 50 is set on regulating part 52, is advantageous to simplify the connected mode of spring 50 and regulating part 52, Er Qieke
To lift the stability in the course of work of spring 50, by setting gap between spring 50 and regulating part 52, ensure spring 50
Being stressed when acting on can compress along the column structure of regulating part 52, and increases the part that spring 50 is set on column structure and account for
The ratio of the whole length of spring 50, prevent column structure diameter is excessive from influenceing the normal flexible of spring 50.
As shown in figure 3, according to one embodiment of present invention, the both ends of spring 50 respectively with the top of magnetic part 40 and
The inwall connection of two chambers 12.That is, magnetic part 40 is located between one end of spring 50 and flexible sealing fin 20, spring
50 other end stops the inwall for abutting and touching housing 10, wherein, magnetic part 40 can be formed as prolonging along the axial direction of flexible sealing fin 20
The column or tubulose stretched, one end connection flexible sealing fin 20 of magnetic part 40, the other end of magnetic part 40 only support contact spring 50
One end, and the central axis of spring 50 can overlap with the central axis of magnetic part 40.
The magnetic part 40 of said structure directly contacts with spring 50, the moving process of magnetic part 40 and an end group of spring 50
Originally it is consistent, once the pressure increase or reduction of first chamber 11, corresponding displacement occurs at any time for magnetic part 40, so as to be lifted
The accuracy of detection of pressure-detecting device 100.
In some instances, the top of magnetic part 40 is provided with spring base 51, and one end of spring 50 is supported on spring base 51,
That is, being provided with spring base 51 between spring 50 and magnetic part 40, spring base 51 is provided with connection towards one end of spring 50
Post, spring 50 are set on connecting pole, if magnetic part 40 is tubular structure, spring base 51 can partly be plugged on magnetic part 40
Interior, then spring 50 stops abutting and touched on spring base 51, if magnetic part 40 is column structure, spring base 51 can be set in magnetic
On part 40.
Can be not only the company of spring 50 and magnetic part 40 by setting spring base 51 between spring 50 and magnetic part 40
It is convenient to connect offer, and the connective stability of magnetic part 40 and spring 50 can be lifted, prevents end face and the magnetic part of spring 50
Occur during 40 end contact it is relative starts, cause pressure-detecting device 100 can not normal work, and spring 50 can be prevented
It is plugged in magnetic part 40, or magnetic part 40 is plugged in spring 50, causes what can not be coordinated between spring 50 and magnetic part 40
Situation occurs.
Further, as shown in figure 3, one end of spring 50 is set on spring base 51 and the inner ring of spring 50 and spring base 51
Between in the distance radially of spring 50 be more than 0.3mm.That is, the value of the overall diameter of connecting pole is at least than spring 50
The small 0.6mm of interior diameter, and the distance between the internal face of spring 50 and the outside wall surface of connecting pole in spring 50 in the radial direction is big
In 0.3mm.Thus, it is possible to for the flexible offer space of spring 50, prevent the outside wall surface of connecting pole from being contacted with the inner ring of spring 50
Increase the flexible resistance of spring 50, improve the sensitivity of the activity of spring 50, and then improve the detection of pressure-detecting device 100
Precision.
As depicted in figs. 1 and 2, according to one embodiment of present invention, the both ends of spring 50 respectively with flexible sealing fin 20
Connected with the inwall of second chamber 12 and be arranged arrangement with magnetic part 40, specifically, one end of spring 50, which only abuts, touches flexibility
Diaphragm seal 20, the other end of spring 50 stop the inwall for abutting and touching housing 10.
Magnetic part 40 and spring 50 are arranged arrangement, it is possible to reduce the axle of spring 50 and magnetic part 40 in flexible sealing fin 20
To the space-consuming on direction, be advantageous to reduce the volume of pressure-detecting device 100, expand the use of pressure-detecting device 100
Scope and sphere.
As shown in figure 1, in some instances, magnetic part 40 forms the axially extending column along spring 50,50 sets of spring
It is located at the outside of magnetic part 40.That is, the overall diameter of magnetic part 40 is less than the interior diameter of spring 50, magnetic part 40 stretches into spring
50 inner sides and one end of magnetic part 40 is connected with flexible sealing fin 20.
The magnetic part 40 and spring 50 of said structure arrangement, can not only save magnetic part 40 and spring 50 in flexible sealing
Space-consuming in the axial direction of piece 20, the inner space of spring 50 can also be made full use of, save magnetic part 40 in flexibility
Space-consuming in the circumference of diaphragm seal 20, be advantageous to further reduce the volume of pressure-detecting device 100.
As shown in Fig. 2 in other examples, magnetic part 40 forms the axially extending ring-type along spring 50, and magnetic
The interior diameter of part 40 is more than the overall diameter of spring 50, and magnetic part 40 is set in the outside of spring 50, and the madial wall of magnetic part 40
Face and the outer side surface of spring 50 are arranged spaced apart, and magnetic part 40 and spring 50 are connected with flexible sealing fin 20.
Similarly, the magnetic part 40 and spring 50 of said structure arrangement, can not only save magnetic part 40 and spring 50 exists
Space-consuming in the axial direction of flexible sealing fin 20, magnetic part 40 is located to the outside of spring 50, magnetic part 40 can also be increased
Volume, be advantageous to be lifted the magnetic field intensity of magnetic part 40, and then be advantageous to the accuracy in detection of adherence pressure detection means 100
And sensitivity.
As depicted in figs. 1 and 2, in some specific examples, the middle part of flexible sealing fin 20 is provided with positioning support base 21, bullet
Spring 50 and magnetic part 40 are respectively supported on positioning support base 21, and specifically, positioning support base 21 is connected to flexible sealing fin
20 towards on a side surface of second chamber 12, and the axial centerline of positioning support base 21 is provided with interior locating slot, magnetic part
40 can be located at the inner side of spring 50, and magnetic part 40 can also be located at the outside of spring 50, if magnetic part 40 is located at spring 50
Inner side, one end of magnetic part 40 are arranged in the interior locating slot in positioning support base 21, and spring 50 is set in positioning support base 21
Outside, if magnetic part 40 is located at the outside of spring 50, one end of spring 50 is arranged on the interior locating slot in positioning support base 21
In, magnetic part 40 is set in the outside of positioning support base 21.
Can be installation magnetic part 40 and the provider of spring 50 by setting positioning support base 21 in flexible sealing fin 20
Just, and the connective stability between magnetic part 40 and spring 50 and flexible sealing fin 20 can be lifted, prevents the He of magnetic part 40
With flexible sealing fin 20 relative rubbing or disengaging occur for spring 50, ensure the normal work of pressure-detecting device 100.
In some optional examples, housing 10 includes lower house and the upper shell that is installed on lower house, lower house with
Upper shell is threadedly coupled.In other optional examples, upper shell be plugged in lower house and with lower house clamping.
Pressure-detecting device 100 according to embodiments of the present invention, it is possible to achieve non-active operation, pressure sensor signal can be realized
It is wirelessly transferred, output sensitivity is high, is advantageous to the collection of signal, relative to the wireless of active pressure sensor and other modes
Pressure sensor, cost are relatively low.
The kitchen appliance of embodiment according to a second aspect of the present invention is specifically described with reference to Fig. 1-Fig. 8.
Kitchen appliance according to embodiments of the present invention includes the pressure detecting for kitchen appliance described in above-described embodiment
Device 100.
Because the pressure-detecting device 100 for kitchen appliance according to embodiments of the present invention has above-mentioned technique effect,
Therefore, kitchen appliance according to embodiments of the present invention also has above-mentioned technique effect, i.e., by using the pressure of above-described embodiment
Detection means 100, the accuracy of the pressure detecting in kitchen appliance can be not only lifted, ensure the normal work of kitchen appliance,
And efficiency of assembling can be lifted.
As Figure 1-Figure 5, according to an optional embodiment of the present invention, kitchen appliance is cooking apparatus 600.Specifically
Ground, cooking apparatus 600 include pot 61, pot cover 62 and pressure-detecting device 100, cooking cavity 611, pot cover are defined in pot 61
62 are movably located in pot 61 to open and close cooking cavity 611, and pressure-detecting device 100 is arranged on pot cover 62, and
Pressure-detecting device 100 connects with cooking cavity 611, for detecting the pressure in cooking cavity 611.The nothing of pressure-detecting device 100
Line, passive, the cooking apparatus 600 especially suitable for Split-type pot cover 62.
, not only can be with by using the pressure-detecting device 100 of above-described embodiment according to the cooking apparatus 600 of the present invention
The accuracy of the pressure detecting of cooking apparatus 600 is lifted, ensures the normal work of cooking apparatus 600, and assembling can be lifted
Efficiency.
In summary, pressure-detecting device 100 according to embodiments of the present invention, cooking for cooking apparatus 600 can accurately be detected
The pressure prepared food in chamber 611, the control accuracy of cooking apparatus 600 is improved, lifts the experience of user, the nothing of pressure-detecting device 100
Line, passive, the cooking apparatus 600 especially suitable for Split-type pot cover 62.
As shown in Fig. 1-Fig. 4 and Fig. 6-Fig. 8, according to another optional embodiment of the invention, kitchen appliance is to wash the dishes
Machine 700, the outside of dish-washing machine 700 are provided with handle 71, and dish-washing machine 700 includes washing cavities 701, water tank 72, and water tank 72 is with interior
Courage 721 and the detection hole 722 turned on inner bag 721.
As shown in fig. 6, in some instances, the bottom of water tank 72 has the detection hole 722 turned on inner bag 721, pressure
Detection means 100 is located at the bottom of water tank 72 and at detection hole 722, to detect the hydraulic pressure of detection hole 722.
As shown in Figure 7 and Figure 8, in other examples, the bottom of water tank 72 has the detection hole 722 turned on inner bag,
Pressure-detecting device 100 is located at the top of water tank 72 and the first through hole 111 of pressure-detecting device 100 turns on detection hole 722,
With the hydraulic pressure in water tank 72.
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 lifted
True property, ensures the normal work of dish-washing machine, and can lift efficiency of assembling.
Certainly, the type of kitchen appliance of the invention is not limited to cooking apparatus, dish-washing machine, can also be other electrical equipment,
Such as water heater etc..
In summary, kitchen appliance according to embodiments of the present invention, can accurately detect in the chamber to be measured of kitchen appliance
Air pressure or hydraulic pressure, the control accuracy of kitchen appliance is improved, lift the experience of user.
Kitchen appliance (such as cooking apparatus, dish-washing machine) according to embodiments of the present invention other form and operate for
All it is known for those of ordinary skill in the art, is 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 to combine specific features, the knot that the embodiment or example describe
Structure, material or feature are contained at least one embodiment or example of the present invention.In this manual, to above-mentioned term
Schematic representation is not necessarily referring to identical embodiment or example.Moreover, specific features, structure, material or the spy of description
Point can combine in an appropriate manner in any one or more embodiments or example.
Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that：Not
In the case of departing from the principle and objective of the present invention a variety of change, modification, replacement and modification can be carried out to these embodiments, this
The scope of invention is limited by claim and its equivalent.
Claims (19)
- A kind of 1. pressure-detecting device for kitchen appliance, it is characterised in that including：Housing, the housing have first through hole and the second through hole, and the first through hole is suitable to turn on the chamber of testing pressure；Flexible sealing fin, the flexible sealing fin are located in the housing so that the inner chamber of the housing to be separated into and described first The first chamber of through hole connection and the second chamber connected with second through hole, the flexible sealing fin are configured to according to institute State the pressure change of first chamber and the second chamber and deform upon；Inductance coil, the inductance coil are located in the second chamber；Magnetic part, the magnetic part are located in the second chamber and are connected with the flexible sealing fin with close according to the flexibility The deformation of mounting and moved relative to the inductance coil, and when the magnetic part moves, make the inductance of the inductance coil Value changes；Detection unit, the detection unit are connected with the inductance coil, for the current inductance value according to the inductance coil Obtain the pressure of first chamber.
- 2. the pressure-detecting device according to claim 1 for kitchen appliance, it is characterised in that the detection unit bag Include：Electric capacity, the electric capacity are electrically connected with the inductance coil to form resonant tank；Detection components, the detection components are connected in the resonant tank, for detecting the resonant frequency of the resonant tank, And the pressure in the first chamber is obtained according to the resonant frequency of the resonant tank.
- 3. the pressure-detecting device according to claim 1 for kitchen appliance, it is characterised in that the detection unit bag Include：Electric capacity, the electric capacity are electrically connected with the inductance coil to form 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 According to the voltage signal of first induction coil or current signal generation induced signal；Detection components, the detection components electrically connect with second induction coil, for detecting the frequency of the induced signal, With the resonant frequency of resonant tank described in the frequency acquisition according to the induced signal, and according to the resonance frequency of the resonant tank Rate obtains the pressure in the first chamber.
- 4. the pressure-detecting device according to claim 3 for kitchen appliance, it is characterised in that first line of induction The distance between circle and second induction coil 1-20mm.
- 5. the pressure-detecting device for kitchen appliance according to Claims 2 or 3, it is characterised in that the electric capacity with The inductance coil series connection.
- 6. the pressure-detecting device according to claim 1 for kitchen appliance, it is characterised in that at the beginning of the magnetic part Beginning magnetic conductivity relative temperature coefficient is α μ ir, α μ ir ＜ 25 × 10-6/℃。
- 7. the pressure-detecting device according to claim 1 for kitchen appliance, it is characterised in that in the second chamber Provided with spring, the spring is configured to be pressed with the deformation of the flexible sealing fin in the flexible sealing fin deformation Contracting.
- 8. the pressure-detecting device according to claim 7 for kitchen appliance, it is characterised in that the magnetic part is in institute The middle part for stating inductance coil may move, and between the inner ring of the lateral wall of the magnetic part and the inductance coil, the spring Distance radially between the inner ring of outer ring and the inductance coil in the spring is more than 0.3mm.
- 9. the pressure-detecting device according to claim 7 for kitchen appliance, it is characterised in that one end of the housing Openend is formed, moveable regulating part is provided with the openend, for adjusting the precompression of the spring.
- 10. the pressure-detecting device according to claim 9 for kitchen appliance, it is characterised in that the spring overcoat On the regulating part, and the distance radially between the spring inner ring and the regulating part in the spring is more than 0.1mm。
- 11. the pressure-detecting device according to claim 7 for kitchen appliance, it is characterised in that the two of the spring End is connected with the top of the magnetic part and the inwall of the second chamber respectively.
- 12. the pressure-detecting device according to claim 11 for kitchen appliance, it is characterised in that the magnetic part Top is provided with spring base, and one end of the spring is supported on the spring base.
- 13. the pressure-detecting device according to claim 12 for kitchen appliance, it is characterised in that the one of the spring Hold the distance radially being set on the spring base and between the spring inner ring and the spring base in the spring big In 0.3mm.
- 14. the pressure-detecting device according to claim 7 for kitchen appliance, it is characterised in that the two of the spring End is connected with the inwall of the flexible sealing fin and the second chamber and is arranged arrangement with the magnetic part respectively.
- 15. the pressure-detecting device according to claim 14 for kitchen appliance, it is characterised in that the magnetic part shape Into the axially extending column along spring, the spring is set on the outside of the magnetic part.
- 16. the pressure-detecting device according to claim 14 for kitchen appliance, it is characterised in that the magnetic part shape Into the axially extending ring-type along spring, the magnetic part is set in the outside of the spring.
- 17. the pressure-detecting device according to claim 14 for kitchen appliance, it is characterised in that the flexible sealing The middle part of piece is provided with positioning support base, and the spring and the magnetic part are respectively supported on the positioning support base.
- 18. a kind of kitchen appliance, it is characterised in that including being used for kitchen appliance according to any one of claim 1-17 Pressure-detecting device.
- 19. kitchen appliance according to claim 18, it is characterised in that the kitchen appliance is cooking apparatus, dish-washing machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711065993.0A CN107655613A (en) | 2017-11-02 | 2017-11-02 | Pressure-detecting device and kitchen appliance for kitchen appliance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711065993.0A CN107655613A (en) | 2017-11-02 | 2017-11-02 | Pressure-detecting device and kitchen appliance for kitchen appliance |
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| Publication Number | Publication Date |
|---|---|
| CN107655613A true CN107655613A (en) | 2018-02-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711065993.0A Pending CN107655613A (en) | 2017-11-02 | 2017-11-02 | Pressure-detecting device and kitchen appliance for kitchen appliance |
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| Country | Link |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108414132A (en) * | 2018-06-04 | 2018-08-17 | 陈荣国 | A kind of Fluid pressure detection sensor |
| CN110118627A (en) * | 2018-02-06 | 2019-08-13 | 美的集团股份有限公司 | Pressure-detecting device, kitchen appliance for kitchen appliance |
| WO2023128152A1 (en) * | 2021-12-28 | 2023-07-06 | 엘에스일렉트릭 주식회사 | Sensor device |
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| CN201724772U (en) * | 2010-06-13 | 2011-01-26 | 上海乐港电器有限公司 | Gas-pressure type pressure sensor |
| CN207456667U (en) * | 2017-11-02 | 2018-06-05 | 美的集团股份有限公司 | For the pressure-detecting device and kitchen appliance of kitchen appliance |
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2017
- 2017-11-02 CN CN201711065993.0A patent/CN107655613A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201724772U (en) * | 2010-06-13 | 2011-01-26 | 上海乐港电器有限公司 | Gas-pressure type pressure sensor |
| CN207456667U (en) * | 2017-11-02 | 2018-06-05 | 美的集团股份有限公司 | For the pressure-detecting device and kitchen appliance of kitchen appliance |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110118627A (en) * | 2018-02-06 | 2019-08-13 | 美的集团股份有限公司 | Pressure-detecting device, kitchen appliance for kitchen appliance |
| CN108414132A (en) * | 2018-06-04 | 2018-08-17 | 陈荣国 | A kind of Fluid pressure detection sensor |
| WO2023128152A1 (en) * | 2021-12-28 | 2023-07-06 | 엘에스일렉트릭 주식회사 | Sensor device |
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