CN107647776A - Pressure means - Google Patents
Pressure means Download PDFInfo
- Publication number
- CN107647776A CN107647776A CN201610599504.9A CN201610599504A CN107647776A CN 107647776 A CN107647776 A CN 107647776A CN 201610599504 A CN201610599504 A CN 201610599504A CN 107647776 A CN107647776 A CN 107647776A
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- China
- Prior art keywords
- contact
- switch
- pressure
- switch terminal
- keeper
- Prior art date
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Classifications
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J27/00—Cooking-vessels
- A47J27/08—Pressure-cookers; Lids or locking devices specially adapted therefor
- A47J27/09—Safety devices
Abstract
The invention discloses a kind of pressure means,Including apparatus body and overvoltage protection switch,Overvoltage protection switch includes Switch main body,First switch terminal,Second switch terminal,Trigger keeper,Touch device and sealing device,First switch terminal has the first contact,Second switch terminal has the second contact,Triggering keeper includes trigger member and elastic keeper,Elastic keeper is connected between the free end of trigger member and the second end of second switch terminal,When the pressure in apparatus body reaches predetermined pressure,Pressure in apparatus body is applied to sealing device by connected entrance,Sealing device drives touch device horizontal movement shake-up trigger member elastic keeper is directed away from the direction of the second contact and often pulls the second end of second switch terminal so that the second contact moves to open position from contact position and the second contact is maintained at open position.According to the pressure means of the present invention, the power-off protection under realization exception is over-pressed.
Description
Technical field
The present invention relates to household appliance technical field, more particularly, to a kind of pressure means.
Background technology
In correlation technique, the normal pressure use range of electric pressure cooking saucepan is at 70kPa (kPa).Normally make in electric pressure cooking saucepan
During, generally use relief valve or make between the pot of electric pressure cooking saucepan and lid that (now electric pressure cooking saucepan is crack
Elastic pressure pot) mode realize normal pressure release.However, can not be just between pressure release defective valve or pot and lid
When normal crack is to discharge the gas in electric pressure cooking saucepan, easily there is situation about popping in electric pressure cooking saucepan, so as to be caused to user
Injury.
The content of the invention
It is contemplated that at least solves one of technical problem present in prior art.Therefore, one object of the present invention exists
In proposing a kind of pressure means, the safety in utilization of pressure means is added.
According to the pressure means of the present invention, including：Apparatus body；And overvoltage protection switch, the overvoltage protection switch bag
Include Switch main body, first switch terminal, second switch terminal, triggering keeper, touch device and sealing device, institute
State on Switch main body formed with the connected entrance that connects inside the apparatus body, the first switch terminal, described the
Two switch terminals, triggering keeper, the touch device and the sealing device are each provided in the Switch main body,
The first switch terminal has the first contact, and the first end of the second switch terminal is fixing end, and described second opens
The second end for closing terminal is movable end, and second end of the second switch terminal has the second contact, described second
Contact often contacts with first contact, has opening for insertion between the first end of the second switch terminal and the second end
Mouthful, the triggering keeper is located on the second switch terminal, and the triggering keeper includes trigger member and elasticity is protected
Gripping member, the trigger member are connected with the side wall of the first end of the neighbouring second switch terminal of the opening, the bullet
Property keeper be connected between the free end of the trigger member and the second end of the second switch terminal, it is described touch dress
Put and be disposed adjacent with the second switch terminal, the sealing device is connected with the touch device, when the utensil sheet
Pressure when internal pressure reaches predetermined pressure, in the apparatus body is applied to the sealing by the connected entrance
Device, the sealing device, which drive the touch device horizontal movement to touch the trigger member, makes the elastic keeper court
To away from second contact direction often pull the second switch terminal the second end so that second contact from
The contact position that first contact often contacts moves to the open position with first contact separation and makes described second
Contact is maintained at the open position.
According to the pressure means of the present invention, by setting touch device and triggering keeper, when the pressure in pressure means reaches
During to predetermined pressure, the first contact and the second contact disconnect, and can make pressure means has first switch terminal and the
The heater circuit of two switch terminals disconnects, so as to effectively realize the power-off protection in the case where exception is over-pressed, moreover, working as
Second contact can be maintained at open position by the second contact when being located at open position, be not in that heater continues to add
The situation of heat, add the safety in utilization of pressure means.In addition, by setting Switch main body, first can be opened
Terminal, second switch terminal, triggering keeper, touch device and sealing device is closed to be integrated in Switch main body so that
Overvoltage protection switch is a global facility, in use, can facilitate and overvoltage protection switch quickly is attached into pressure
Power utensil, improves efficiency of assembling.By setting sealing device, can be effectively ensured overvoltage protection switch action can
By property.The structure of overvoltage protection switch is simple, and cost is low.
According to some embodiments of the present invention, pipe, the utensil are communicated between the connected entrance and the apparatus body
Intrinsic pressure is flatly applied on the touch device by the communicating pipe.
Specifically, the touch device includes：Fixed seat is touched, the shake-up fixed seat is fixed on the Switch main body
It is interior, formed with pilot hole in the shake-up fixed seat, wherein the first switch terminal and the second switch terminal are consolidated
It is scheduled in the shake-up fixed seat；Touch pole, the touch pole are located in the pilot hole, and the first of the touch pole
End is suitable to stretch out the pilot hole shake-up triggering keeper, the second end of the touch pole and the sealing device phase
Even；And dynamic clamping head and quiet clamping head, the dynamic clamping head and quiet clamping head are located in the pilot hole, the dynamic clamping head and quiet clamping head is configured to court
The touch pole is often promoted to the direction away from the second switch terminal.
Alternatively, the sealing device is diaphragm seal, the sealing dress when second contact is located at the contact position
Put to the connected entrance and bloat to block the connected entrance, it is described close when second contact is located at the open position
Seal apparatus is directed away from the direction bulging of the connected entrance.
Alternatively, the communicating pipe is inverted L-shaped pipe.
Alternatively, the trigger member is shell fragment, the trigger member and institute when second contact is located at the contact position
The side that elastic keeper is located at the neighbouring touch device of the second switch terminal is stated, when second contact position
The trigger member and the elastic keeper are located at the remote described tactile of the second switch terminal when open position
The side of dynamic device.
Alternatively, the elastic keeper is compression spring.
According to some embodiments of the present invention, the predetermined pressure is P, and the P meets：140kPa≤P≤200kPa.
According to some embodiments of the present invention, the apparatus body includes：Pot, the top of the pot are opened wide；And lid
Body, the lid are located at the top of the pot, wherein the overvoltage protection switch is located on the lid.
Alternatively, the overvoltage protection switch is located at the center of the lid.
According to some embodiments of the present invention, the pressure means are electric pressure cooking saucepan or electric pressure pot.
Alternatively, the pressure lifting surface area that the environmental pressure is acted on the sealing device is S, wherein the S expires
Foot：1mm2≤S≤100mm2。
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
Substantially, or by the practice of the present invention recognize.
Brief description of the drawings
The above-mentioned and/or additional aspect and advantage of the present invention will become bright in the description from combination accompanying drawings below to embodiment
Show and be readily appreciated that, wherein：
Fig. 1 is the profile of overvoltage protection switch according to embodiments of the present invention, wherein the second contact is in contact position；
Fig. 2 is another profile of overvoltage protection switch according to embodiments of the present invention, is disconnected wherein the second contact is in
Position；
Fig. 3 is the stereogram of overvoltage protection switch according to embodiments of the present invention, wherein the second contact is in contact position；
Fig. 4 is the schematic diagram of the first switch terminal and second switch terminal shown in Fig. 3；
Fig. 5 is the profile of pressure means according to embodiments of the present invention.
Reference：
100：Overvoltage protection switch；
1：First switch terminal；11：First contact；
2：Second switch terminal；21：Second contact；22：Opening；
3：Trigger keeper；31：Trigger member；32：Elastic keeper；
41：Touch fixed seat；411：Pilot hole；42：Touch pole；43：Dynamic clamping head and quiet clamping head；
5：Switch main body；51：Connected entrance；6：Sealing device；7：Wire；
200：Pressure means；
201：Pot；202：Lid；203：Seal；204：Communicating pipe.
Embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein phase 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
The embodiment of accompanying drawing 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 ", " longitudinal direction ", " transverse direction ", " length ",
" width ", " thickness ", " on ", " under ", "front", "rear", "left", "right", " vertical ",
" level ", " top ", " bottom ", " interior ", " outer ", " axial direction ", " radial direction ", " circumference " etc. refer to
The orientation or position relationship shown be based on orientation shown in the drawings or position relationship, be for only for ease of the description present invention and
Simplify description, rather than the device or element of instruction or hint meaning there must be specific orientation, with specific orientation
Construction and operation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are only used for describing purpose, and it is not intended that indicating or implying relatively heavy
The property wanted or the implicit quantity for indicating indicated technical characteristic.Thus, " first ", the spy of " second " are defined
Sign can be expressed or implicitly include one or more this feature.In the description of the invention, unless otherwise saying
Bright, " 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 ",
" connected ", " connection " should be interpreted broadly, for example, it may be fixedly connected or be detachably connected,
Or it is integrally connected；Can be mechanical connection or electrical connection；Can be joined directly together, can also be in
Between medium be indirectly connected, can be the connection of two element internals.For the ordinary skill in the art, may be used
The concrete meaning of above-mentioned term in the present invention is understood with concrete condition.
Pressure means 200 according to embodiments of the present invention are described below with reference to Fig. 1-Fig. 5.Pressure means 200 can be electricity
Pressure cooker.In the description below the application, with pressure means 200 be electric pressure cooking saucepan especially rigid pressure pot (i.e.
In electric pressure cooking saucepan whole work process, pot and lid remain fully sealed position) exemplified by illustrate.When
So, it will be understood to those skilled in the art that pressure means 200 can also be other pressures for needing pressure cut-off to protect
Power utensil 200, such as electric pressure pot etc..
As shown in figure 5, such as electric pressure cooking saucepan of pressure means 200 according to embodiments of the present invention, including apparatus body and mistake
Press protection switch 100.When exception occurs in the normal pressure relief device such as pressure release defective valve of such as electric pressure cooking saucepan of pressure means 200
When over-pressed (pressure i.e. in pressure means 200 is more than its normal pressure use range such as 70kPa), overvoltage protection is opened
The heater in pressure means 200 can be powered off by closing 100, heated heater stop, prevented pressure means
Pressure in 200 further raises.
Specifically, as Figure 1-Figure 4, overvoltage protection switch 100 include Switch main body 5, first switch terminal 1,
Second switch terminal 2, triggering keeper 3, touch device and sealing device 6.Overvoltage protection switch 100 has switch
Body 5, formed with the connected entrance 51 with connect inside apparatus body on Switch main body 5, for example, such as Fig. 1 and Fig. 2
Shown, connected entrance 51 can be formed in the bottom of Switch main body 5.Wherein first switch terminal 1, second switch terminal
2nd, keeper 3, touch device and sealing device 6 is triggered to be each provided in Switch main body 5.Thus, by the way that set can be with
Accommodate the switch of first switch terminal 1, second switch terminal 2, triggering keeper 3, touch device and sealing device 6
Body 5, improve the integration of overvoltage protection switch 100.
First switch terminal 1 has the first contact 11, and second switch terminal 2 has the second contact 21, the second contact 21
Often contacted with the first contact 11.For example, as depicted in figs. 1 and 2, the first contact 11 is located at first switch terminal 1
Free end (for example, upper end in Fig. 1 and Fig. 2), the first contact 11 is from a side surface of first switch terminal 1
Protrusion is formed, and similarly, the second contact 21 is located at the free end of second switch terminal 2 (for example, in Fig. 1 and Fig. 2
Right-hand member), the second contact 21 protrudes to be formed from a side surface of second switch terminal 2.
First switch terminal 1 and second switch terminal 2 are connected to pressure device suitable for (for example, by way of wire 7)
In the heater circuit (not shown) for having 200 such as electric pressure cooking saucepans, the heater circuit includes heater.Work as pressure
During such as electric pressure cooking saucepan normal use of power utensil 200, the first contact 11 remains with the second contact 21 and contacted, and adds
Heater circuit often turns on, heater work, to be heated to food in pressure means 200 etc..
Alternatively, the outer surface of the first contact 11 and the second contact 21 can be collectively formed by cambered surface and plane respectively, should
Plane is located at the top of the first contact 11 and the second contact 21, thus, due to the first contact 11 and the second contact 21
Between contact be face contact, contact area is big so that the first contact 11 contacts well with the second contact 21 so that
It ensure that the reliability of heater circuit.Certainly, the outer surface of the first contact 11 and the second contact 21 can also be formed as
Outwardly sphere (not shown).
The first end (for example, left end in Fig. 1 and Fig. 2) of second switch terminal 2 is fixing end, now second switch
The first end of terminal 2 is fixed, and the first end of second switch terminal 2 does not have relative to overvoltage protection switch 100
Relative motion, the second end (for example, right-hand member in Fig. 1 and Fig. 2) of second switch terminal 2 are movable end, second
Second end of switch terminal 2 can move.Wherein the second contact 21 is located at above-mentioned the second of second switch terminal 2
End, thus, the second end of second switch terminal 2 can drive the second contact 21 to move so that the second contact 21 with
First contact 11 contacts, or is separated with the first contact 11.
There is the opening 22 of insertion between the first end of second switch terminal 2 and the second end.For example, such as Fig. 3 and Fig. 4
Shown, opening 22 runs through second switch terminal 2 along the thickness direction of second switch terminal 2.It is understood that open
Specific size and dimension of mouth 22 etc. can specifically be set according to actual requirement, preferably to meet actual requirement.
As Figure 1-Figure 4, triggering keeper 3 includes trigger member 31 and elastic keeper 32, and trigger member 31 is with opening
The side wall (for example, left side wall in Fig. 1-Fig. 4) of the first end of the neighbouring second switch terminal 2 of mouth 22 is connected, should
Side wall is preferably formed into linear, to ensure reliability that trigger member 31 is connected with the side wall.Remaining of trigger member 31
Part and remaining side wall of opening 22 are spaced apart from each other, and now trigger member 31 is equivalent to cantilever beam, trigger member 31 from
By hold (for example, right-hand member in Fig. 1-Fig. 4) relative to trigger member 31 the other end relative with free end (for example,
Left end in Fig. 1-Fig. 4) it is swingable.
Further, reference picture 1- Fig. 4, trigger member 31 can be shell fragment, when the second contact 21 is located at contact position
Trigger member 31 and elastic keeper 32 are located at the side of the neighbouring touch device of second switch terminal 2 (for example, Fig. 1
With the downside in Fig. 2), when the second contact 21 is located at open position, trigger member 31 and elastic keeper 32 are positioned at the
The side (for example, upside in Fig. 1 and Fig. 2) of the remote touch device of two switch terminals 2.Alternatively, shell fragment
Be formed as planar structure, thus, processing is simple and cost is low, but not limited to this.
Elastic keeper 32 be connected to trigger member 31 above-mentioned free end and second switch terminal 2 the second end (for example,
The side wall at the second end of the neighbouring second switch terminal 2 of opening 22) between, when touch device touches trigger member 31
The direction that elastic keeper 32 is directed away from the second contact 21 often pulls the second end of second switch terminal 2 so that second
Contact 21 is maintained at open position, as shown in Figure 2.Alternatively, elastic keeper 32 is compression spring, for example,
As Figure 1-Figure 4, elastic keeper 32 can be the reducing that both ends cross-sectional area is smaller, intermediate cross-section product is larger
Helical spring.But not limited to this.
Thus, as shown in figure 1, when the second contact 21 is located at contact position, trigger member 31 and compression spring are respectively positioned on
The downside of second switch terminal 2, because compression spring is in normal compressive state, above-mentioned the second of second switch terminal 2
The outward flange at end will be often upward under the pulling force effect of compression spring, so that the first contact 11 and the second contact 21 are good
Good contact；When the second contact 21 is located at open position, the position of trigger member 31 and compression spring shown in Fig. 1
The upside of second switch terminal 2 is moved up to, because compression spring is in normal compressive state, second switch terminal 2
Above-mentioned second end outward flange will under the pulling force effect of compression spring often downwards so that the second contact 21 and first
Contact 11 often separates, and the second contact 21 will not contact again with the first contact 11.
Touch device is disposed adjacent with second switch terminal 2.For example, as depicted in figs. 1 and 2, touch device is positioned at the
The side (for example, downside in Fig. 1 and Fig. 2) of the remote first switch terminal 1 of two switch terminals 2.Sealing dress
6 are put with touch device to be connected.Pressure when the pressure in apparatus body reaches predetermined pressure, in apparatus body passes through
Connected entrance 51, which is applied to sealing device 6, sealing device 6 drives touch device horizontal movement to touch trigger member 31 makes elasticity
The direction that keeper 32 is directed away from the second contact 21 often pulls the second end of second switch terminal 2 so that the second contact
21 moved to from the contact position (as shown in Figure 1) often contacted with the first contact 11 separated with the first contact 11 it is disconnected
Open position (as shown in Figure 2).Now stress level of the pressure means 200 for example in electric pressure cooking saucepan acts on shake-up dress
Put to touch with level and trigger keeper 3, and then drive second switch terminal 2 to act, overvoltage protection switch 100 moves
It is horizontal direction to make direction.For example, 100 integral-rotation of overvoltage protection switch, 90 ° of settings, overvoltage protection switch 100
It is able to can also be turned clockwise 90 ° with rotate counterclockwise 90 ° (as shown in Figure 5).Wherein, sealed by setting
Device 6, sealing device 6 can open the inside of Switch main body 5 with such as electric pressure cooking saucepan internal insulation of pressure means 200,
Make that there is pressure difference between the inside of Switch main body 5 and such as electric pressure cooking saucepan inside of pressure means 200, so as to work as pressure means
During 200 such as electric pressure cooking saucepan internal abnormality overvoltage, sealing device 6 can promote touch device to touch in the presence of pressure difference
Dynamic trigger member 31.
Touch device is under normal conditions (for example, when the second contact 21 is located at contact position) with triggering keeper 3 not
Contact.When pressure of the pressure means 200 for example in electric pressure cooking saucepan reaches predetermined pressure, touch device is kept with triggering
Part 3 contacts and touching triggering keeper 3 makes the second contact 21 separate and (not contact) with the first contact 11, so as to
Disconnect heater circuit, heater does not work, and pressure of the pressure means 200 for example in electric pressure cooking saucepan can gradually drop
It is low, the protection to such as electric pressure cooking saucepan of pressure means 200 is realized, and due to such as electric pressure cooking saucepan of pressure means 200
The gas of HTHP is not discharged, so as to be damaged to user.Touch device touch trigger keeper 3 after,
It can not contacted with triggering keeper 3.
Alternatively, predetermined pressure P, P meet：140kPa≤P≤200kPa.Its concrete numerical value can be according to actual pressure
The type of such as electric pressure cooking saucepan of power utensil 200 and specifically set, preferably to meet actual requirement.
Triggering keeper 3 is located on second switch terminal 2, and keeper is triggered when the second contact 21 is located at open position
3 make the second contact 21 be maintained at open position.For example, the first use of overvoltage protection switch 100 (the first contact 11
Disconnected with the second contact 21) after can not Self-resetting, i.e. the first contact 11 and the second contact 21 will not contact again make plus
Heater circuit turns on, so as to add the security that such as electric pressure cooking saucepan of pressure means 200 uses.
Pressure means 200 according to embodiments of the present invention, by setting touch device and triggering keeper 3, work as pressure device
When 200 pressure for example in electric pressure cooking saucepan of tool reaches predetermined pressure, the first contact 11 and the second contact 21 disconnect, can
So that the heater circuit with first switch terminal 1 and second switch terminal 2 of such as electric pressure cooking saucepan of pressure means 200
Disconnect, so as to effectively realize the power-off protection in the case where exception is over-pressed, moreover, when the second contact 21 is positioned at disconnection position
The second contact 21 can be maintained at open position when putting, be not in the situation that heater continues heating, add
The safety in utilization of such as electric pressure cooking saucepan of pressure means 200.In addition, the structure of overvoltage protection switch 100 is simple, into
This is low.In addition, by setting Switch main body 5, first switch terminal 1, second switch terminal 2, triggering can be protected
Gripping member 3, touch device and sealing device 6 are integrated in Switch main body 5 so that overvoltage protection switch 100 is one whole
Body component, in use, it is for example electric overvoltage protection switch 100 conveniently and quickly can be attached into pressure means 200
Pressure cooker, improve efficiency of assembling.By setting sealing device 6, overvoltage protection switch 100 can be effectively ensured and act
Reliability.
Pipe 204 is communicated between connected entrance 51 and apparatus body, for example, as shown in figure 5, communicating pipe 204 is inverted L
Shape pipe, thus, processing is simple and cost is low, but not limited to this.Pressure in apparatus body passes through the water of communicating pipe 204
Level land is applied on touch device, and when the pressure in apparatus body is more than predetermined pressure, the pressure in apparatus body can
Flatly to act on touch device, so that touch device touches second switch terminal 2.It is understood that even
The concrete shape of siphunculus 204 can be set according to the actual requirements and specifically, as long as meeting to make the pressure in apparatus body can
Flatly to act on touch device.
As depicted in figs. 1 and 2, touch device is located at the side (example of the remote first switch terminal 1 of second switch terminal 2
Such as, the downside in Fig. 1 and Fig. 2), specifically, touch device includes：Touch fixed seat 41, touch pole 42
And dynamic clamping head and quiet clamping head 43, touch fixed seat 41 be fixed in Switch main body 5, now touch fixed seat 41 relative to
Switch main body 5 is fixed, is touched in fixed seat 41 formed with pilot hole 411, wherein first switch terminal 1
It is fixed on and is touched in fixed seat 41 with second switch terminal 2.Touch pole 42 is located in pilot hole 411, touch pole 42
First end (for example, upper end in Fig. 1 and Fig. 2) be suitable to stretch out pilot hole 411 touch triggering keeper 3, be oriented to
Hole 411 has guide effect to touch pole 42, to ensure the accuracy of the motion of touch pole 42.Alternatively, touch pole
42 bearing of trend is vertical with the plane where second switch terminal 2, thus, it is possible to preferably touch triggering keeper
3 make the second contact 21 be separated with the first contact 11.The lower end of touch pole 42 is provided with the backstop muscle to stretch out.
Dynamic clamping head and quiet clamping head 43 is located in pilot hole 411, and dynamic clamping head and quiet clamping head 43 is configured to be directed away from second switch terminal 2
Direction often promote touch pole 42.For example, dynamic clamping head and quiet clamping head 43 can be spring, spring is set in outside touch pole 42,
And roof and backstop muscle of the both ends of spring respectively with pilot hole 411 only support, and often promote touch pole 42 with horizontal, that is, work as
When pressure of the pressure means 200 for example in electric pressure cooking saucepan is less than predetermined pressure, touch pole 42 can be under the action of the spring
Reset.
Further, sealing device 6 is located in Switch main body 5, and the second end of touch pole 42 is (for example, Fig. 1 and figure
Lower end in 2) sealing device 6 is provided with, for example, as depicted in figs. 1 and 2, formed with holding tank on sealing device 6,
Above-mentioned second end of touch pole 42 is suitable to be fixed in holding tank.When the pressure in apparatus body is applied by connected entrance 51
Sealing device 6 drives the above-mentioned first end of touch pole 42 to stretch out and is oriented to when being added on sealing device 6 and reaching predetermined pressure
Touch triggering keeper 3 in hole 411.Sealing device 6 is used to separate the inside of Switch main body 5 and connected entrance 51, for example,
Opened with such as electric pressure cooking saucepan internal insulation of pressure means 200, so that the inside of Switch main body 5 and pressure means 200 are for example
There is pressure difference between electric pressure cooking saucepan inside, so that when such as electric pressure cooking saucepan internal abnormality overvoltage of pressure means 200, it is close
Seal apparatus 6 can promote touch pole 42 to move horizontally in the presence of pressure difference and trigger keeper 3 to touch.
Alternatively, sealing device 6 is diaphragm seal, and when the second contact 21 is located at contact position, sealing device 6 is to connection
Mouthfuls 51 bulgings are to block connected entrance 51, for example, as shown in figure 1, the edge of diaphragm seal and for blocking connected entrance 51
Bottom play a part of two layers of sealing, be effectively guaranteed touch device action reliability.When the second contact 21
Sealing device 6 is directed away from the direction bulging (as shown in Figure 2) of connected entrance 51 when open position.Now sealing dress
Putting 6 can be made of flexible material, can further improve the sealing effectiveness of sealing device 6.
According to some specific embodiments of the present invention, as shown in figure 5, apparatus body such as electric pressure cooking saucepan includes：Pot
201 and lid 202, the top of pot 201 open wide, lid 202 is located at the top of pot 201, wherein overvoltage protection
Switch 100 is located on lid 202.Alternatively, overvoltage protection switch 100 is located at the center of lid 202.Pot 201
Seal 203 is provided between lid 202, to ensure the sealing between pot 201 and lid 202.
When the pressure in apparatus body just reaches predetermined pressure, have：
F1=F2=P × S
Wherein, F1 is the pressure suffered by the bottom of sealing device 6；F2 is the elastic force of dynamic clamping head and quiet clamping head 43；P is utensil
Intrinsic pressure, P span is 120kPa-200kPa (including endpoint value)；S acts on for environmental pressure
Pressure lifting surface area on sealing device 6 is (for example, as shown in figure 5, S acts on sealing for the pressure in apparatus body
The pressure lifting surface area of the side of device 6), for the size of steam and forced contact point.Wherein S meets：1mm2
≤S≤100mm2。
Thus, the conversion of above value is passed through, it can be deduced that the stress of the dynamic clamping head and quiet clamping head 43 of control power-off pressure.
Specifically, in the case where second switch terminal 2 acts, the bottom stress F1=P × S of sealing device 6, meanwhile,
F1=F2.So as to pass through the conversion of above-mentioned formula, it can be deduced that the stress of the dynamic clamping head and quiet clamping head 43 of control power-off pressure.
Such as electric pressure cooking saucepan of pressure means 200 according to embodiments of the present invention, it is possible to achieve when pressure means 200 are for example electric
When pressure in pressure cooker is between 140kPa-200kPa, deenergization, overvoltage protection is realized.This kind of overvoltage protection
The principle of switch 100 is steam of the pressure means 200 for example in electric pressure cooking saucepan by the access switch body 5 of connected entrance 51,
When steam pressure is more than the elastic force of such as spring of dynamic clamping head and quiet clamping head 43, sealing device 6 is driven on steam top, drives touch pole
42 movements, triggering keeper 3 is touched, can be flicked after the stress of second switch terminal 2, the second of second switch terminal 2
Contact 21 makes first contact 11 and second of the inside of Switch main body 5 as second switch terminal 2 is to the movement of horizontal side
Contact 21 separates.Triggering keeper 3, after second switch terminal 2 is touched, bullet are set on second switch terminal 2
Property such as compression spring of keeper 32 hold second switch terminal 2, prevent the return of the second contact 21, pressure can be effectively increased
Try hard to keep shield, there is provided pressure anomaly power-off protection, increase the security of such as electric pressure cooking saucepan of pressure means 200, overvoltage is protected
Shield switch 100 more securely and reliably, and reduces cost compared with traditional mechanical pressure relief.
Other of such as electric pressure cooking saucepan of pressure means 200 according to embodiments of the present invention are formed and operated for this area
All it is known for those of ordinary skill, 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 the embodiment or example describe it is specific
Feature, structure, material or feature are contained at least one embodiment or example of the present invention.In this manual, it is right
The schematic representation of above-mentioned term is not necessarily referring to identical embodiment or example.Moreover, description specific features, structure,
Material or feature 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：Do not taking off
In the case of principle and objective from the present invention a variety of change, modification, replacement and modification can be carried out to these embodiments,
The scope of the present invention is limited by claim and its equivalent.
Claims (12)
- A kind of 1. pressure means, it is characterised in that including：Apparatus body；WithOvervoltage protection switch, the overvoltage protection switch include Switch main body, first switch terminal, second switch terminal, Keeper, touch device and sealing device are triggered, formed with being connected inside the apparatus body on the Switch main body Connected entrance, the first switch terminal, the second switch terminal, it is described triggering keeper, the touch device It is each provided at the sealing device in the Switch main body, the first switch terminal has the first contact, and described second The first end of switch terminal is fixing end, and the second end of the second switch terminal is movable end, the second switch end Second end of son has the second contact, and second contact often contacts with first contact, the second switch There is the opening of insertion, the triggering keeper is located at the second switch terminal between the first end of terminal and the second end On, the triggering keeper includes trigger member and elastic keeper, and neighbouring described the of the trigger member and the opening The side wall of the first end of two switch terminals is connected, and the elastic keeper is connected to the free end of the trigger member and described Between second end of second switch terminal, the touch device is disposed adjacent with the second switch terminal, the sealing Device is connected with the touch device,Pressure when the pressure in the apparatus body reaches predetermined pressure, in the apparatus body passes through the connected entrance It is applied to the sealing device, the sealing device drives the touch device horizontal movement shake-up trigger member to make institute State elastic keeper and be directed away from the direction of second contact and often pull the second end of the second switch terminal so that institute State the second contact and disconnection position with first contact separation is moved to from the contact position often contacted with first contact Put and second contact is maintained at the open position.
- 2. pressure means according to claim 1, it is characterised in that the connected entrance and the apparatus body it Between be communicated with pipe, the pressure in the apparatus body is flatly applied on the touch device by the communicating pipe.
- 3. pressure means according to claim 2, it is characterised in that the touch device includes：Fixed seat is touched, the shake-up fixed seat is fixed in the Switch main body, formed with leading in the shake-up fixed seat Xiang Kong, wherein the first switch terminal and the second switch terminal are fixed in the shake-up fixed seat；Touch pole, the touch pole are located in the pilot hole, and the first end of the touch pole is suitable to stretch out the pilot hole The triggering keeper is touched, the second end of the touch pole is connected with the sealing device；AndDynamic clamping head and quiet clamping head, the dynamic clamping head and quiet clamping head are located in the pilot hole, and the dynamic clamping head and quiet clamping head is configured to be directed away from The direction of the second switch terminal often promotes the touch pole.
- 4. pressure means according to claim 1, it is characterised in that the sealing device is diaphragm seal, works as institute Sealing device when the second contact is located at the contact position is stated to bloat to block the connected entrance to the connected entrance, When second contact is located at the open position, the sealing device is directed away from the direction bulging of the connected entrance.
- 5. pressure means according to claim 2, it is characterised in that the communicating pipe is inverted L-shaped pipe.
- 6. pressure means according to claim 1, it is characterised in that the trigger member is shell fragment, when described The trigger member and the elastic keeper are located at the neighbour of the second switch terminal when two contacts are located at the contact position The side of the nearly touch device, the trigger member and the elasticity when second contact is located at the open position Keeper is located at the side of the remote touch device of the second switch terminal.
- 7. pressure means according to claim 1, it is characterised in that the elastic keeper is compression spring.
- 8. pressure means according to claim 1, it is characterised in that the predetermined pressure is P, and the P expires Foot：140kPa≤P≤200kPa.
- 9. pressure means according to claim 1, it is characterised in that the apparatus body includes：Pot, the top of the pot are opened wide；WithLid, the lid are located at the top of the pot, wherein the overvoltage protection switch is located on the lid.
- 10. pressure means according to claim 9, it is characterised in that the overvoltage protection switch is located at the lid The center of body.
- 11. pressure means according to claim 1, it is characterised in that the pressure means are electric pressure cooking saucepan or electricity Pressure cooker.
- 12. pressure means according to claim 1, it is characterised in that the environmental pressure acts on the sealing Pressure lifting surface area on device is S, wherein the S meets：1mm2≤S≤100mm2。
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610599504.9A CN107647776B (en) | 2016-07-26 | 2016-07-26 | Pressure device |
| EP16908360.7A EP3318163B1 (en) | 2016-07-26 | 2016-08-15 | Excess pressure protection switch and pressure appliance provided with same |
| PCT/CN2016/095335 WO2018018670A1 (en) | 2016-07-26 | 2016-08-15 | Excess pressure protection switch and pressure appliance provided with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610599504.9A CN107647776B (en) | 2016-07-26 | 2016-07-26 | Pressure device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107647776A true CN107647776A (en) | 2018-02-02 |
| CN107647776B CN107647776B (en) | 2020-06-30 |
Family
ID=61126658
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610599504.9A Active CN107647776B (en) | 2016-07-26 | 2016-07-26 | Pressure device |
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| Country | Link |
|---|---|
| CN (1) | CN107647776B (en) |
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| CN205162752U (en) * | 2015-10-20 | 2016-04-20 | 佛山市顺德区美的电热电器制造有限公司 | Culinary art device and overvoltage protection structure thereof |
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| CN202919915U (en) * | 2012-09-04 | 2013-05-08 | 美的集团股份有限公司 | Electric pressure cooker with power failure protection function |
| CN203690209U (en) * | 2013-11-29 | 2014-07-02 | 佛山市华诺温控器有限公司 | Single non-automatically-resetting type pressure relief switch |
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| Publication number | Publication date |
|---|---|
| CN107647776B (en) | 2020-06-30 |
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