Background technology
Electric pressure cooking saucepan is energy-conservation with it, during joint, convenience and practicality become one of indispensable cooker of people's daily life.
The pressure control that cooker uses in the prior art, common the employing fixedly push rod of heat-generating disc touch sheet with the elasticity that is located at the heat-generating disc bottom, and this pressure control device is installed comparatively complexity of adjusting, limited adjustment range.China utility model patent CN01257731.6 open " a kind of automatic pressure pot ", it is made up of parts such as shell, inner cover, interior pot, heat-generating discs, heat-generating disc places the inner cover bottom, be evenly distributed with between heat-generating disc and the inner cover bottom and realize interior pot and inner cover elastic supporting mechanism, this elastic supporting mechanism main body is an elastic metal sheet, the middle part of metallic plate is fixed on the strut angle of heat-generating disc, and the micro-control switch of pressure control device is positioned on the feet.By interior pot of ever-increasing pressure, heat-generating disc is pushed downwards, the position of sheet metal correspondence is out of shape downwards, the end that heat-generating pipe is relative produces to bottom offset, until disconnecting the pressure control switch, interior pot is no longer heated boost.Though this patent can realize the purpose of automatic Regulation, the deformation of its metallic plate is linear poor, in actual applications, again because its flexible displacement is very little, and resetting property is poor, thereby pressure control inaccuracy, also exist simultaneously need with outer pot material property and size on uniformity; The requirement height of electric hot tray machining accuracy, manufacturing cost is very high.
China utility model patent CN2503818Y, a kind of pressure controller of electric pressure cooker that directly utilizes the work of pressure signal control heater is provided, form annular seal space by pot cover, interior pot and sealing ring, and be provided with the cylinder that is communicated with annular seal space, piston is housed in the cylinder, and the piston rod at rear portion is with spring, the piston rod displacement, permanent magnet on it and the permanent magnet on the switch key are inhaled from effect, reach the cut-out of heater switch or reset.This electric pressure cooking saucepan control device is arranged on the pot cover, reduces by the pressure controller manufacturing cost of piston with relative this patent disclosure of pressure signal feedback.But by the displacement touch switch action of piston rod, the pressure control rate is slow, and pressure controling precision is not high, is difficult to make pressure cooker accurate setting to adjustable in pressure control scope when cooking food.
The utility model content
The utility model purpose provide a kind of simple in structure, cost is low, the reliable and high Kick type pressure control device of precision of easy to use, pressure control.
The utility model realizes that above-mentioned purpose adopts following scheme:
A kind of Kick type pressure control device, place the handle of electric cooking appliance, include steam-operating part and control valve, the steam-operating part places sleeve to be slidingly matched with it, control valve and steam-operating part interlock is characterized in that also being provided with flexible member, lever, flap, are fixed on magnet steel and tongue tube under the flap; One end of flexible member relies on lever, and the other end is fixed in the horizontal level with the fulcrum of lever, and between the lower surface and steam-operating part of control valve, the other end and flap contact with lever one end of fulcrum rotation.
Kick type pressure control device described in the utility model, an end of flexible member is fixed on the handle, or be fixed in other affixed parts of handle on; The other end of flexible member contacts the boss (spring base) at lever or is directly fixed on lever, the fixing point of flexible member can with the fulcrum of lever at same horizontal line, when the lever rotation, compression elastic element, just be in same horizontal dynamic equilibrium state up to lever and flexible member, this moment, flexible member was to compress the most tightly in the impulse stroke, and the slight rotation of lever can destroy dynamic equilibrium state, lever is pressed down suddenly by the storage elastic force of flexible member, has realized the kick of lever.
The fulcrum of lever can be fixed in handle or shell, is lever and the handle or the pin joint of shell; Fulcrum also can be for being arranged on the small embossment of lever bar portion, be fixed with lever seat on the handle, flexible member one end leans the boss at lever, and the other end is seated at the boss of lever seat, and the pretightning force of flexible member is seated at the fulcrum of regulations and parameters on the lever seat in the corresponding draw-in groove.
Above-mentioned control valve includes bonnet, control valve spring, spool and valve seat, and valve seat and bonnet are affixed, and control valve spring is located between spool and the bonnet.
Also be provided with swing arm and lifters between above-mentioned bonnet and the valve spring, swing arm is that cam is connected with lifters, valve seat is fixed in handle, has the stopper slot that limits the lifters up-downgoing on the cylindrical shell of valve seat, stretches out with adjusting pressuring knob in the hole of bar portion by bonnet top of swing arm to be connected.
When stirring adjusting pressuring knob, swing arm is along with the identical angle of rotation, because swing arm adopts cam mechanism to be connected with lifters, lifters can only be up and down along control valve seat, the elemental height of control valve spring is shortened or elongation, the steam-operating part needed pot inner pressure difference of same displacement that rises reaches a pressure in the control pot with this, realizes the adjustable in pressure of electric pressure cooking saucepan.
Along the circumferential direction uniform one or more than one step on the described swing arm, lifters contacts with the step end face of swing arm with the projection that symmetry makes progress.
Described sleeve is provided with cushion rubber outward, can improve the good seal of device, improves precision.
Described flexible member is the elastic arc sheet or is the compression spring of spirality or butterfly.
One end horizontal-extending of described lever, horizontal segment and flap contact or removably connect with connector, flap can move up and down or rotation so that magnet steel triggers or disconnect tongue tube.
When electric pressure cooking saucepan used, when steam pressure in the pot rose, vapour pressure promoted the steam-operating part, drove the steam valve spool and rose, and when rising to certain altitude, lever is horizontal, and at this moment, lever and flexible member are in same horizontal dynamic equilibrium state just; Rise when the spool continuation, because the effect of flexible member, lever can be realized kick at this moment, thereby drives flap and the magnet steel activity that is positioned under it, touch switch; When pot inner pressure descended, the effect of control valve spring descended spool, because spool heads on lever, this moment, lever separated with flap gradually, from and gauge tap is replied, restart, can make thus to keep certain pressure in the pot.
The Kick type pressure control device that the utility model provides has following beneficial effect with respect to prior art:
(1), the pressure controling mode of Kick type, simple in structure, assemble easy to usely, pressure control is reliable, action is clear-cut, drift value is little, the precision height.
(2), by the swing arm that is provided with in the control valve and the cam structure setting of elevating lever, that realizes pressure has level adjustable.
(3), the component materials of control element is less demanding, can reduce material cost.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is further described.
In Fig. 1~6: 1 be handle, 2 for control valve, 201 be bonnet, 202 for control valve spring, 203 for spool, 204 for valve seat, 3 for swing arm, 4 for lifters, 5 for lever, 51 for fulcrum, 6 for the steam-operating part, 7 for sleeve, 8 for flexible member, 9 for lever seat, 10 for binding thread, 13 for cushion rubber, 14 for adjusting pressuring knob, 15 for flap, 16 for magnet steel, 17 for middle plate, 18 for tongue tube, 19 for stay-warm case, 20 for interior pot, 23 be shell.
Embodiment 1
Kick type pressure control device shown in Fig. 1~4
Be made up of pressure transmission, kick and triggering part, the pressure transmitting portions is that the pressure size is passed to lever 5 in the kick device with the displacement of steam-operating part 6 and spool 203 in the utility model; Kick partly is a flexible member 8 and with the lever 5 of fulcrum 51 rotation, flexible member 8 is along with the rotation of lever 5, when the pressure to flexure strip of elastic force and lever 5 is in same level, reach dynamic equilibrium state, be that pot inner pressure reaches setting value, rise Deng pot inner pressure, will get final product destruction of balance, realize lever 5 kicks; Triggering part is by flap 15 and magnet steel 16 and tongue tube 18, and lever 5 kicks will drive the flap 15 in the flip flop equipment, triggers tongue tube 18, and then system enters packing state.
Also can be provided with and adjust force value in the present embodiment, thereby change the pressure set points of pressure cooker according to the needs of cooking food by the pressure-regulating device that is provided with in the control valve 2.
Shown in Fig. 1, steam-operating part 6 places sleeve 7, is cushion rubber 13 between steam-operating part 6 and the sleeve 7, and steam-operating part 6 can slide up and down freely along the wall of sleeve 7, cushion rubber 13 can guarantee the seal in pot inner pressure chamber and pressure perception accurately.
Spool 203 interlocks in steam-operating part 6 and the control valve 2, control valve 2 comprises bonnet 201, control valve spring 202, spool 203 and valve seat 204, valve seat 204 is fixed on the handle 1 by binding thread 10, bonnet 201 is threaded with valve seat 204, swing arm 3 and lifters 4 also are housed in the control valve 2, swing arm 3, lifters 4, spool 203 places in the valve seat 204, the axis of swing arm 3 stretches out from control valve bonnet 201 centre bores, be connected with the adjusting pressuring knob 14 on placing handle 1, lifters 4 adopts cam mechanism to be connected with swing arm 3, symmetry has stopper slot on the cylindrical shell of valve seat 204, the two ends lug of lifters 4 snaps in stopper slot, stopper slot limits the displacement of lifters 4 up-downgoings, so lifters 4 can only be up and down along valve seat 204, the seat surface of lifters 4 leans control valve spring 202, and an other end of control valve spring 202 is leaning valve seat 204.
Along the circumferential direction symmetric arrangement three or a plurality of steps 31 on the swing arm 3, lifters 4 is provided with the projection 41 that symmetry makes progress in the face of the step surface of swing arm 3, contact with the step end face of swing arm 3, adjusting pressuring knob 14 rotations, can drive swing arm 3 rotations, projection 41 on the step surface is in the height oscilaltion of the position of step end face, lifters 4 moves up and down, control valve spring 202 elemental heights shorten or elongation, the also corresponding change of the needed pressure of rising same displacement of same steam-operating part 6, promptly make the pressure change of lever 5 kicks, so can realize pressure controlled multistage adjusting.
The respective identification of the required pressure of cooking food is shown on the adjusting pressuring knob 14, selects corresponding pressure by the rotation adjusting pressuring knob.
One end of lever 5 place the bottom surface of spool 203 and steam-operating part 6 outer end faces between, lever 5 can stretch out a projection, spool 203 bottom surfaces also have corresponding groove, with departing from of restriction lever 5.Lever 5 can rotate by the cylindricality fulcrum 51 on it, lever seat 9 is fixed in handle 1, flexible member 8 among the utility model embodiment is a helical spring, flexible member 8 one ends lean the boss at lever 5, the other end is seated at the boss of lever seat 9, the pretightning force of flexible member 8 is seated at cylindricality fulcrum 51 on the lever seat 9 in the corresponding draw-in groove, and an end of regulations and parameters 5 is the horizontal segment after the bending downwards, and the horizontal segment of bending and flap 15 touch.
Flap 15 times is magnet steel 16 fixedly, can rotate or move down along with flap 15, and magnet steel 16 rotates or moves down connects tongue tube 18, and tongue tube 18 is positioned at magnet steel 16 belows, in directly being fixed on the plate 17.
Embodiment 2
The
spool 203 and the
control valve spring 202 of control valve are loaded in the
valve seat 204, and
control valve spring 202 1 ends drop on
bonnet 201, one ends and lean at
control valve spool 203,
lever 5 middle parts are hinged by an articulated mounting of fixing, 51 at fulcrum is a pin joint, and
lever 5 can be rotated around pin joint,
lever 5 be "
",
flexible member 8 is the arc flexure strip, and an end is articulated on the
handle 1, and an end is fixed in the bending place of
lever 5, and the end horizontal segment that
lever 5 stretches out downwards
touches flap 15.
When lever 5 pressed down, flap 15 can drive magnet steel 16 and connect tongue tube 18 along with lever 5 rotations; Also can move down, drive magnet steel 16 and connect tongue tube 18 with lever 5.
All the other are with embodiment 1
Application examples 1
Be applied to electric pressure cooking saucepan as Fig. 6 for the utility model embodiment 1 Kick type pressure control device.
Be made up of shell 23, outer pot, interior pot 20, electric hot tray etc., electric hot tray and temperature-sensing element are fixed in stay-warm case 19, and stay-warm case 19 is connected with middle plate 17, and tongue tube 18 is directly fixed on middle plate 17, and middle plate 17 is fastened on shell 23, and base is fastened on the shell.
In use, the interior pot 20 that cooking food is housed is placed inner cover, when electric pressure cooking saucepan cover put in place after, push button, start heating, carrying out along with heating when pot inner pressure increases gradually, sees Fig. 2, when rising to certain pressure, steam-operating part 6 upwards slides along the internal face of sleeve 7, upwards promotes lever 5, and drives mobile compression control valve spring 202 on the spool 203.
When lever 5 rises to certain altitude, promptly be moved to setting valve, lever 5 is horizontal, and this moment, lever just was in dynamic equilibrium state, saw shown in Figure 3.
When spool 203 continues to rise, owing to the effect of flexible member 8, lever 5 meetings realize prominent choosing, thereby drive flap 15 activities, and drive magnet steel 16 shake-up tongue tubes 18 are seen shown in Figure 4, and this moment, system can enter packing state automatically.
When pot inner pressure descended, because the effect of control valve spring 202, spool 203 leaned lever 5 and moves down, and lever 5 separates with flap 15 gradually, reaches reset values, and the gauge tap of tongue tube 18 is replied, and restarted heating.
Can be according to the needs of cooked food, in use, stir adjusting pressuring knob 14 to corresponding force value, can drive swing arm 3 rotations, projection 41 on the step surface is in the height oscilaltion of the position of step end face, lifters 4 moves up and down, the elemental height of control valve spring 202 is shortened or elongation, the also corresponding change of the needed pressure of rising same displacement of same steam-operating part 6, promptly make the pressure change of lever 5 kicks, reach the interior pressure of control pot with this, realize the adjustable in pressure of electric pressure cooking saucepan.