CN207456667U - For the pressure-detecting device and kitchen appliance of kitchen appliance - Google Patents
For the pressure-detecting device and kitchen appliance of kitchen appliance Download PDFInfo
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- CN207456667U CN207456667U CN201721458452.XU CN201721458452U CN207456667U CN 207456667 U CN207456667 U CN 207456667U CN 201721458452 U CN201721458452 U CN 201721458452U CN 207456667 U CN207456667 U CN 207456667U
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Abstract
The utility model 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 for turning on the chamber of testing pressure, the inner cavity of housing is separated into first chamber and second chamber by flexible sealing fin, flexible sealing fin is deformed upon according to the pressure change of first chamber and second chamber, magnetic part is moved according to the deformation of flexible sealing fin compared with inductance coil, and when magnetic part moves, the inductance value of inductance coil is made to change, detection unit is used to obtain the pressure of first chamber according to the current inductance value of inductance coil.Pressure-detecting device according to the present utility model for kitchen appliance, connection circuit is simple, in real time and can be accurately detected testing pressure, ensure the normal work of kitchen appliance.
Description
Technical field
The utility model is related to kitchen appliance technical fields, are examined more particularly, to a kind of pressure for kitchen appliance
Survey device and kitchen appliance.
Background technology
Pressure sensor in correlation technique is mostly connected using power cord, 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 more, the wireless pressure sensor in correlation technique
It is realized by communications protocol, cost is higher.
Utility model content
The utility model is intended at least solve one of technical problem in the prior art.
For this purpose, the utility model proposes a kind of pressure-detecting device for kitchen appliance, the pressure-detecting device dresses
With conveniently, the scope of application is wider, and precision is higher, at low cost.
The utility model also proposes a kind of kitchen appliance with above-mentioned pressure-detecting device.
According to the pressure-detecting device for kitchen appliance of the utility model first aspect, the pressure-detecting device bag
It includes：Housing, flexible sealing fin, magnetic part, inductance coil and detection unit, the housing have first through hole and the second through hole,
The first through hole is suitable for turn on the chamber of testing pressure, and it is interior with by the housing that the flexible sealing fin is located at the housing
Inner cavity be separated into the first chamber connected with the first through hole and the second chamber connected with second through hole, it is described soft
Property diaphragm seal is configured to be deformed upon, the inductor wire according to the pressure change of the first chamber and the second chamber
Circle is located in the second chamber, and the magnetic part is located in the second chamber and is connected with the flexible sealing fin with basis
The deformation of the flexible sealing fin and moved compared with the inductance coil, and when the magnetic part moves, make the inductance
The inductance value of coil changes, and the detection unit is connected with the inductance coil, for working as according to the inductance coil
Preceding inductance value obtains the pressure of first chamber.
Pressure-detecting device according to the present utility model for kitchen appliance is obtained using inductance coil and magnetic part cooperation
The pressure value of first chamber is taken, it need not be with magnetism by electromagnetism field interactions, inductance coil between inductance coil and magnetic part
Part contacts directly or connects contact, simplifies the connection circuit of pressure-detecting device, has widened the applicable model of pressure-detecting device
It encloses.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 electric appliance.
According to the pressure-detecting device of the utility model one embodiment, the detection unit includes：Capacitance and detection group
Part, the capacitance are electrically connected to form resonant tank with the inductance coil, and the detection components are connected to the resonant tank
In, for detecting the resonant frequency of the resonant tank, and first chamber is obtained according to the resonant frequency of the resonant tank
Indoor pressure.
According to the pressure-detecting device of the utility model one embodiment, the detection unit includes：Capacitance, the first sensing
Coil, the second induction coil and detection components, the capacitance are electrically connected to form with the inductance coil resonant tank, and described
One induction coil is connected in the resonant tank, second induction coil and the first induction coil mutual induction, institute
It states the second induction coil and inductive signal, the detection group is generated according to the voltage signal or current signal of first induction coil
Part is electrically connected with second induction coil, for detecting the frequency of the inductive signal, with the frequency according to the inductive signal
Rate obtains the resonant frequency of the resonant tank, and is obtained according to the resonant frequency of the resonant tank in the first chamber
Pressure.
Optionally, the distance between first induction coil and second induction coil are 3mm-20mm.
One embodiment according to the present utility model, the capacitance are connected with the inductance coil.
According to the pressure-detecting device of the utility model one embodiment, the initial permeability relative temperature of the magnetic part
Factor alpha μ ir, α μ ir ＜ 25 × 10-6/℃。
According to the pressure-detecting device of the utility model one embodiment, spring, the bullet are equipped in the second chamber
Spring is configured to be compressed with the deformation of the flexible sealing fin in the flexible sealing fin deformation.
Optionally, the magnetic part moves 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.
Another embodiment according to the present utility model, one end of the housing form openend, are set at the openend
There is moveable regulating part, for adjusting the precompression of the spring.
Optionally, 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.
Another embodiment according to the present utility model, the both ends of the spring respectively with the top of the magnetic part and institute
State the inner wall connection of second chamber.
Optionally, the top of the magnetic part is equipped 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 the spring distance radially be more than 0.3mm.
One embodiment according to the present utility model, the both ends of the spring respectively with the flexible sealing fin and described
The inner wall of two chambers connects and is arranged arrangement with the magnetic part.
An alternative embodiment according to the present utility model, the magnetic part form the axially extending column along spring,
The spring is set on the outside of the magnetic part.
An alternative embodiment according to the present utility model, the magnetic part form the axially extending ring-type along spring,
The magnetic part is set in the outside of the spring.
An alternative embodiment according to the present utility model, the middle part of the flexible sealing fin are equipped with positioning support base, institute
It states spring and the magnetic part is respectively supported on the positioning support base.
According to the kitchen appliance of the utility model second aspect, including being used for kitchen appliance according to above-described embodiment
Pressure-detecting device.
Optionally, the kitchen appliance is cooking apparatus, dish-washing machine.
The additional aspect and advantage of the utility model will be set forth in part in the description, partly will be from following description
In become apparent or recognized by the practice of the utility model.
Description of the drawings
The above-mentioned and/or additional aspect and advantage of the utility model will in the description from combination accompanying drawings below to embodiment
Become apparent and be readily appreciated that, wherein：
Fig. 1 is the structure diagram according to the pressure-detecting device of the utility model one embodiment；
Fig. 2 is the structure diagram according to the pressure-detecting device of the utility model another embodiment；
Fig. 3 is the structure diagram according to the pressure-detecting device of the utility model another embodiment；
Fig. 4 is the circuit diagram according to the pressure-detecting device of the utility model one embodiment；
Fig. 5 is the structure diagram according to the kitchen appliance of the utility model one embodiment；
Fig. 6 is the structure diagram according to the kitchen appliance of the utility model another embodiment；
Fig. 7 is the structure diagram according to the kitchen appliance of the utility model another embodiment；
Fig. 8 is the sectional view of the structure shown in Fig. 7.
Reference numeral：
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：Liner, 722：Detection hole.
Specific embodiment
The embodiment of the utility model is described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning
Same or similar element is represented to same or similar label eventually or there is same or like element.Below by ginseng
The embodiment for examining attached drawing description is exemplary, and is only used for explaining the utility model, and it is not intended that the utility model
Limitation.
In the description of the utility model, it is to be understood that term " " center ", " length ", " thickness ", " on ", " under ",
The orientation or position relationship of the instructions such as " top ", " bottom " " interior ", " outer ", " axial direction ", " radial direction ", " circumferential direction " are based on shown in the drawings
Orientation or position relationship are for only for ease of description the utility model and simplify description rather than instruction or imply signified dress
It puts or element must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that the utility model
Limitation.In addition, " first " is defined, the feature of " second " can be expressed or implicitly includes one or more spy
Sign.In the description of the utility model, unless otherwise indicated, " multiple " are meant that two or more.
, it is necessary to which explanation, unless otherwise clearly defined and limited, term " are pacified in the description of the utility model
Dress ", " connected ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected or integrally
Connection；Can be mechanical connection or electrical connection；It can be directly connected, can also be indirectly connected by intermediary,
It can be the connection inside two elements.For the ordinary skill in the art, can above-mentioned art be understood with concrete condition
Concrete meaning of the language in the utility model.
Below with reference to Fig. 1-Fig. 4 descriptions according to the pressure-detecting device for kitchen appliance of the utility model embodiment
100。
As Figure 1-Figure 4, wrapping for the pressure-detecting device 100 of kitchen appliance according to the utility model embodiment
It includes：Housing 10, flexible sealing fin 20, magnetic part 40, inductance coil 30 and detection unit (not shown).Need exist for explanation
It is that " magnetic 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 111 and second through hole 121 of first through hole 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 arranged spaced apart and second chamber 12 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 is moved towards second chamber 12, if on the contrary, second chamber 12
When pressure is larger, flexible sealing fin 20 is moved 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 12 pressure change of second chamber and when generating 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 occurs mobile, 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.
As a result, according to the pressure-detecting device 100 for kitchen appliance of the utility model embodiment, inductance coil is utilized
30 obtain the pressure value of first chamber 11 with the cooperation of magnetic part 40, mutual by electromagnetic field between inductance coil 30 and magnetic part 40
Effect, inductance coil 30 are contacted without contacting directly or connecting with magnetic part 40, simplify the connecting line of pressure-detecting device 100
The scope of application of pressure-detecting device 100 has been widened on road.Furthermore in real time and testing pressure can be accurately detected, realized pair
The detection of kitchen appliance working condition ensures the normal work of kitchen appliance.
According to the utility model an optional embodiment, detection unit includes：Capacitance and detection components, capacitance and inductance
Coil 30 is electrically connected to form resonant tank, and detection components are connected in resonant tank, for detecting the resonance of resonant tank frequency
Rate, and the 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
It surveys 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 utility model, detection unit includes：Capacitance C, the first sense
Coil L0, the second induction coil Lm and detection components are answered, capacitance C is electrically connected with inductance coil 30 (L1) to form resonant tank,
First induction coil L0 is connected in resonant tank, the second induction coil Lm and the first induction coil L0 mutual inductions, the second sense
Coil Lm is answered according to the generation of the voltage signal or current signal of the first induction coil L0 and the first induction coil L0 China i parts phase
The inductive signal of same frequency, detection components are electrically connected with the second induction coil Lm, for detecting the frequency of inductive signal, with basis
The resonant frequency of the frequency acquisition resonant tank of inductive signal, and obtained according to the resonant frequency of resonant tank in first chamber 11
Pressure.
Similarly, when moving, the inductance value of inductance coil 30 changes magnetic part 40, and resonance occurs for resonant tank,
It, 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.
The first induction coil L0 and the second induction coil Lm mutual inductions obtain signal as a result,, can be with without contacting directly
It prevents detection components from bringing inconvenience with resonant tank hypotelorism for installation, is also possible to prevent the indoor high temperature of 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 when can meet product work.
Big sensibility reciprocal inductance may be employed in above-mentioned inductance coil 30, is conducive to improve the sensitivity of signal output, inductor wire
The hollow sensibility reciprocal of circle 30 is 1-3mH.Low Drift Temperature magnetic core may be employed in magnetic part 40, makes the output signal of pressure-detecting device 100
Temperature drift it is small.Flexible membrane may be employed in flexible sealing fin 20, so as to reach larger magnetic core displacement, improves 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 realizes 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 hypotelorisms, detection components are influenced by high temperature, are not only easily damaged, but also 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 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 100 has the advantages that passive, wireless, is easily installed and pressure detecting.
In some instances, capacitance connects to form with inductance coil 30 resonant tank, the magnetic field around inductance coil 30
Inductance coil 30 generates current signal when changing, and capacitance is charged and discharged with the cooperation of inductance coil 30, in this process
The middle resonance for realizing circuit, detection components obtain testing pressure according to resonant frequency.Certainly, the utility model is not limited to this,
Capacitance 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 promote the accuracy in detection of detection unit, and then improves the detection of pressure-detecting device 100
Precision.
As shown in Figure 1-Figure 3, one embodiment according to the present utility model is additionally provided with spring 50, bullet in second chamber 12
Spring 50 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 inner wall 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 in first chamber 11 increases, and flexible sealing fin 20 continues to squeeze 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 20 persistent movement of flexible sealing fin or initial position Different Effects pressure-detecting device
100 accuracy in detection.
In some instances, non-magnetic high temperature stainless steel spring may be employed in spring 50, 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 moves 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 inside 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 in 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 inside of inductance coil 30 and along the axially extending of inductance coil 30, and 50 outer ring of spring with
Distance radially between the inner ring of inductance coil 30 in spring 50 is more than 0.3mm.
As a result, by being set between inductance coil 30 and magnetic part 40 and between inductance coil 30 and spring 50
The gap of 0.5mm can not only prevent inductance coil 30 from magnetic part 40 being hindered 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 promote the reset of flexible sealing fin 20
Sensitivity is conducive to the accuracy of detection of adherence pressure detection device 100.
Further, one end of housing 10 forms openend, moveable regulating part 52 is equipped at 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
Thus the precompression of magnetic part 40 obtains testing pressure for detection unit and provides conveniently, meanwhile, regulating part 52 can be adjusted
It is whole, the pressure detecting accuracy of further adherence pressure detection device 100.
In some instances, 52 adjusting screws of regulating part, adjusting screw can make pressure-detecting device 100 in high-volume
Nominal pressure detection device 100 exports during production, by batch signatures control errors within 1%FS, makes output signal conformance
Height, interchangeability are strong.
As shown in figure 3, in the present embodiment, be sleeved on outside one end of spring 50 on regulating part 52, and 50 inner ring of spring 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 columnar overall diameter is less than the interior diameter of spring 50, and spring 50 is set in column
In structure, and the distance between 50 interior sidewall surface of spring 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 50 inner ring of spring and regulating part 52 in spring 50 are more than 0.3mm.
Spring 50 is set on regulating part 52, is conducive to simplify the connection mode of spring 50 and regulating part 52, Er Qieke
To promote the stability in 50 course of work of spring, 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 50 length of entire spring prevents column structure diameter is excessive from influencing the normal flexible of spring 50.
As shown in figure 3, one embodiment according to the present utility model, the both ends of spring 50 top with magnetic part 40 respectively
It is connected with the inner wall of second chamber 12.That is, magnetic part 40 is located between one end of spring 50 and flexible sealing fin 20,
The other end of spring 50 stops the inner wall for abutting and touching housing 10, wherein, magnetic part 40 can be formed as the axis along flexible sealing fin 20
To the column or tubulose of extension, one end connection flexible sealing fin 20 of magnetic part 40, the other end of magnetic part 40, which only abuts, touches bullet
One end of spring 50, and the central axis of spring 50 can be overlapped with the central axis of magnetic part 40.
The magnetic part 40 of said structure is contacted directly with spring 50, the moving process of magnetic part 40 and an end group of spring 50
Originally it is consistent, once the pressure of first chamber 11 increases or reduces, corresponding displacement occurs at any time for magnetic part 40, so as to be promoted
The accuracy of detection of pressure-detecting device 100.
In some instances, the top of magnetic part 40 is equipped with spring base 51, and one end of spring 50 is supported on spring base 51,
That is, being equipped with spring base 51 between spring 50 and magnetic part 40, spring base 51 is equipped with connection towards one end of spring 50
Column, 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 is only abutted and touched on spring base 51, if magnetic part 40 is column structure, spring base 51 can be set in magnetism
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 promoted, prevents end face and the magnetic part of spring 50
Occur to start relatively during 40 end contact, cause pressure-detecting device 100 that can not work normally, and can prevent spring 50
It is plugged in magnetic part 40 or magnetic part 40 is plugged in spring 50, cause what can not be coordinated between spring 50 and magnetic part 40
It happens.
Further, as shown in figure 3, one end of spring 50 is set on spring base 51 and 50 inner ring of spring and spring base 51
Between spring 50 distance radially 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 provide space for the flexible 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 50 activity of spring, and then improve the detection of pressure-detecting device 100
Precision.
As depicted in figs. 1 and 2, one embodiment according to the present utility model, the both ends of spring 50 respectively with flexible sealing
Piece 20 and the inner wall of second chamber 12 connect and are arranged arrangement with magnetic part 40, and specifically, one end of spring 50, which only abuts, touches
Flexible sealing fin 20, the other end of spring 50 stop the inner wall for abutting and touching housing 10.
Magnetic part 40 and spring 50 are arranged arrangement, it is possible to reduce spring 50 and magnetic part 40 are in the axis of flexible sealing fin 20
Occupied space on direction is conducive to reduce the volume of pressure-detecting device 100, expands 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 40 outside of magnetic part.That is, the overall diameter of magnetic part 40 is less than the interior diameter of spring 50, magnetic part 40 stretches into spring
On the inside of 50 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
Occupied space in the axial direction of piece 20 can also make full use of the inner space of spring 50, save magnetic part 40 in flexibility
Occupied space in 20 circumferential direction of diaphragm seal is conducive 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
Magnetic part 40 is located at the outside of spring 50 by the occupied space in the axial direction of flexible sealing fin 20, can also increase magnetic part 40
Volume, be conducive to be promoted the magnetic field intensity of magnetic part 40, and then be conducive to the accuracy in detection of adherence pressure detection device 100
And sensitivity.
As depicted in figs. 1 and 2, in some specific examples, the middle part of flexible sealing fin 20 is equipped 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 equipped with interior locating slot, magnetic part
40 can be located at the inside 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
Inside, one end of magnetic part 40 are mounted 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 mounted 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 50 provider of magnetic part 40 and spring 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 promoted, prevents 40 He of magnetic part
With flexible sealing fin 20 opposite rubbing or disengaging occur for spring 50, ensure that pressure-detecting device 100 works normally.
In some optional examples, housing 10 includes lower housing and the upper shell that is installed on lower housing, lower housing with
Upper shell is threadedly coupled.In other optional examples, upper shell is plugged in lower housing and is clamped with lower housing.
According to the pressure-detecting device 100 of the utility model embodiment, non-active operation, pressure sensor signal energy can be realized
Realize wireless transmission, output sensitivity is high, is conducive to the acquisition of signal, compared with active pressure sensor and other modes
Wireless pressure sensor, cost are relatively low.
The kitchen appliance according to the utility model second aspect embodiment is specifically described with reference to Fig. 1-Fig. 8.
The pressure for kitchen appliance according to the kitchen appliance of the utility model embodiment includes above-described embodiment
Detection device 100.
Since the pressure-detecting device 100 for kitchen appliance according to the utility model embodiment is with above-mentioned technology effect
Therefore fruit, also has above-mentioned technique effect, i.e., by using above-described embodiment according to the kitchen appliance of the utility model embodiment
Pressure-detecting device 100, can not only promote the accuracy of the pressure detecting in kitchen appliance, ensure the normal of kitchen appliance
Work, and efficiency of assembling can be promoted.
As Figure 1-Figure 5, according to the utility model an optional embodiment, kitchen appliance is cooking apparatus 600.Tool
Body, cooking apparatus 600 includes pot 61, pot cover 62 and pressure-detecting device 100, and cooking cavity 611, pot are defined in pot 61
Lid 62 is movably located in pot 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 with cooking cavity 611, for detecting the pressure in cooking cavity 611.The pressure-detecting device 100
Wirelessly, it is passive, the cooking apparatus 600 especially suitable for Split-type pot cover 62.
Cooking apparatus 600 according to the present utility model, by using the pressure-detecting device 100 of above-described embodiment, not only
The accuracy of the pressure detecting of cooking apparatus 600 can be promoted, ensures the normal work of cooking apparatus 600, and can be promoted
Efficiency of assembling.
In conclusion according to the pressure-detecting device 100 of the utility model embodiment, cooking apparatus 600 can be accurately detected
Cooking cavity 611 in pressure, improve cooking apparatus 600 control accuracy, promote the experience of user, the pressure-detecting device
100 is wireless, 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 utility model, kitchen appliance is
Dish-washing 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
There are liner 721 and the detection hole 722 turned on liner 721.
As shown in fig. 6, in some instances, the bottom of water tank 72 has the detection hole 722 turned on liner 721, pressure
Detection device 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 liner,
Pressure-detecting device 100 is located at the top of water tank 72 and the first through hole 111 of pressure-detecting device 100 is turned 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 promoted
True property, ensures the normal work of dish-washing machine, and can promote efficiency of assembling.
Certainly, the type of the kitchen appliance of the utility model is not limited to cooking apparatus, dish-washing machine, can also be other electricity
Device, such as water heater etc..
In conclusion according to the kitchen appliance of the utility model embodiment, the chamber to be measured of kitchen appliance can be accurately detected
Interior air pressure or hydraulic pressure improve the control accuracy of kitchen appliance, promote the experience of user.
According to other compositions of the kitchen appliance (such as cooking apparatus, dish-washing machine) of the utility model embodiment and operation
All it is for those of ordinary skills known, 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 utility model.In the present specification, to above-mentioned art
The schematic representation of language may not refer to the same embodiment or example.Moreover, description specific features, structure, material or
Person's feature can in an appropriate manner combine in any one or more embodiments or example.
While there has been shown and described that the embodiment of the utility model, it will be understood by those skilled in the art that：
In the case where not departing from the principle and objective of the utility model can these embodiments be carried out with a variety of variations, modification, replaced
And modification, the scope of the utility model are limited by claim and its equivalent.
Claims (19)
1. a kind of pressure-detecting device for kitchen appliance, which is characterized in that including：
Housing, the housing have first through hole and the second through hole, and the first through hole is suitable for turning on the chamber of testing pressure；
Flexible sealing fin, the flexible sealing fin are located in the housing inner cavity of the housing being 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
It states the pressure change of first chamber and the second chamber and deforms 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 compared with 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, which is characterized in that the detection unit bag
It includes：
Capacitance, the capacitance are electrically connected to form resonant tank with the inductance coil；
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, which is characterized in that the detection unit bag
It includes：
Capacitance, the capacitance are electrically connected to form resonant tank with the inductance coil；
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 inductive signal；
Detection components, the detection components are electrically connected with second induction coil, for detecting the frequency of the inductive signal,
With the resonant frequency of resonant tank described in the frequency acquisition according to the inductive 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, which is characterized 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, which is characterized in that the capacitance with
The inductance coil series connection.
6. the pressure-detecting device according to claim 1 for kitchen appliance, which is characterized 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, which is characterized in that in the second chamber
Equipped 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, which is characterized in that the magnetic part is in institute
The middle part for stating inductance coil moves, 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, which is characterized in that one end of the housing
Openend is formed, moveable regulating part is equipped at the openend, for adjusting the precompression of the spring.
10. the pressure-detecting device according to claim 9 for kitchen appliance, which is characterized 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, which is characterized in that the two of the spring
The inner wall respectively with the top of the magnetic part and the second chamber is held to be connected.
12. the pressure-detecting device according to claim 11 for kitchen appliance, which is characterized in that the magnetic part
Top is equipped 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, which is characterized in that the one of the spring
The distance radially that end cap is located on the spring base and between the spring inner ring and the spring base in the spring is big
In 0.3mm.
14. the pressure-detecting device according to claim 7 for kitchen appliance, which is characterized in that the two of the spring
End is connected with the inner wall 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, which is characterized 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, which is characterized 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, which is characterized in that the flexible sealing
The middle part of piece is equipped 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, which is characterized 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, which is characterized in that the kitchen appliance is cooking apparatus, dish-washing machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721458452.XU CN207456667U (en) | 2017-11-02 | 2017-11-02 | For the pressure-detecting device and kitchen appliance of kitchen appliance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721458452.XU CN207456667U (en) | 2017-11-02 | 2017-11-02 | For the pressure-detecting device and kitchen appliance of kitchen appliance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207456667U true CN207456667U (en) | 2018-06-05 |
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ID=62253752
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| CN201721458452.XU Active CN207456667U (en) | 2017-11-02 | 2017-11-02 | For the pressure-detecting device and kitchen appliance of kitchen appliance |
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| Country | Link |
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| CN (1) | CN207456667U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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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2017
- 2017-11-02 CN CN201721458452.XU patent/CN207456667U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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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