CN102204782B - Movable-cover-type micropressure cooker - Google Patents
Movable-cover-type micropressure cooker Download PDFInfo
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- CN102204782B CN102204782B CN 201110143300 CN201110143300A CN102204782B CN 102204782 B CN102204782 B CN 102204782B CN 201110143300 CN201110143300 CN 201110143300 CN 201110143300 A CN201110143300 A CN 201110143300A CN 102204782 B CN102204782 B CN 102204782B
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Abstract
The invention discloses a movable-cover-type micropressure cooker, comprising a cooker body and a cooker cover, wherein the cooker body is internally provided with an inner cooker, an inner cooker seal ring is arranged between the cooker cover and the inner cooker, and a signal switch capable of sensing the up and down moving signal of the cooker cover is arranged on the cooker body or the cookercover. The movable-cover-type micropressure cooker is characterized in that a low-pressure release valve is arranged on the cooker cover; and a first cover hole is arranged on the cooker cover, the lower-pressure release valve is arranged in the first cover hole, the low-pressure release valve comprises a first release valve core capable of moving up and down in the first cover hole, a gap is formed between the first release valve core and the cooker cover, a first seal ring is arranged at the lower part of the first release valve core, and a gap is formed between the first seal ring and the cooker cover. The movable-cover-type micropressure cooking ware disclosed by the invention can be used for greatly reducing energy consumption, has accuracy for temperature control, and can ensure that the cooker cover is smooth in the operation of opening and closing. Due to the characteristics, the movable-cover-type micropressure cooker can be applied to kitchen appliances, such as electric cookers, soup stewing pots, slow cookers and the like.
Description
Technical field
The present invention relates to the electric heating pan, the electric heating pan of particularly under the minute-pressure duty, working.
Background technology
Its lid of traditional electric cooker is provided with the passage of straight-through outside air, and basically without any pressure, the water of boiling can be taken away a large amount of heats in the pot in the pot, makes the energy consumption of this traditional electric cooker very high; Secondly in order to keep the interior water of the pot institute's calorific requirement of seething with excitement, power and the volume adequacy of heating element must be done greatly.The electric pressure cooking saucepan that pressure cooker particularly begins to grow up recent years, though aspect energy consumption, reduce greatly, but the pot inner high voltage not only forms food in the pot and destroys, and the structural strength height of requirement pot body, otherwise be very easy to blast, therefore there is potential safety hazard all the time in the manufacturing cost height of pressure cooker.
For the minute-pressure pan, its basic principle is to keep all the time the critical point of the approaching boiling of water temperature in the pot but seldom surpasses fluidizing point, food in the pot can be boiled near the fluidizing point temperature range, be not evaporated and the loss heat but do not have a large amount of water, the energy consumption that makes pan is not only less than pressure cooker but also be far smaller than common traditional electric cooker.We know that becoming steam from water will consume lot of energy, and all are discharged to outside the pot after these energy consumption, not only consumed energy but also indoor temperature is raise.How exactly with regard to the temperature of the interior food of control pot is the enforcement difficult point of this kind minute-pressure pan for this reason.If all adopt electronic type to detect control method, manufacturing cost is not only very high, and since the parameter drift of detecting element, extremely difficult precise control.
In the prior art scheme, relatively being typically Chinese patent application number is 200820005938.2, name is called the technical scheme of " a kind of Pneumatic electrothermal stewing implement ", it has disclosed a kind of Pneumatic electrothermal stewing implement, it belongs to electric heating cooking device for kitchen use, is the electric cooker product technology of utilizing steam power control temperature to work under normal pressure.It comprises pot cover, interior pot, electric heater; Interior pot is arranged on the electric heater; It also comprises a power control unit, and this device comprises fixed structure piece, switch, power transmission part, and switch is wherein connected with electric heater and inserted power supply.Though a kind of structure and principle of low tension pot for cooking rice have also been mentioned in this invention, but these essence of an invention characteristics still are Chinese patent application number is a kind of reprint of 200620007791.1 patented technologies, it uses the principle of pressure cooker, utilize distortion or the displacement of pot cover itself, pot inner pressure is transmitted in the displacement of pot in perhaps utilizing, thereby still must make the pressure ratio in the pot higher.In the minute-pressure pan of this kind structure, because pot is to work under the sealing state in it, no matter be the situation of uncapping or closing lid, all need inevitably the barotropic state or the negative pressure state that occur in the pot are handled; Secondly because the water in the interior pot also has a large amount of air before near boiling point overflows, and these air also need timely discharge, but do not need the electric heater power cutoff when discharging air.Yet technique scheme is not considered the problems referred to above, makes not only opening and closing lid difficulty but also can make the switch misoperation in discharging the low-pressure air process of its product, has delayed the time of cooking so greatly.
Secondly, Chinese patent application number is 201010218284.3, and name is called the patent of invention of " a kind of movable cover controlling device ", disclosed a kind of movable cover controlling device, it belongs to electric heating cooking utensil for kitchen use field, is to adopt pressure controling mode, is operated in a kind of movable cover controlling device of normal pressure scope.It comprises pot cover parts, pan body part, interior pot, electric hot tray; Side in pot cover parts and pan body part joint arranges a controlling organization, and described controlling organization comprises transmission part and switch, is used for the displacement force of transmission pot cover parts or transmission part and the switch of gravity and is correspondingly set up and down; Opposite side in described pot cover parts and pan body part joint arranges a supporting point mechanism, described supporting point mechanism, comprise the fixture that is arranged on pot cover parts and the pan body part and buckle plug-in unit, fixture and button plug-in unit mutually combine, and the pot cover parts are that fulcrum is done the folding displacement with the binding site of the two.According to the record of claim 7, claim 8 and the specification of this invention, it has been concerned about the problem of the lid of folding successfully, thereby adopts a push rod 11 that sealing ring on the pot cover is given air pressure and external balance in the interior pot of crimp forcibly.But do not consider still that not only the discharge problem of air but also this push rod 11 mechanisms are very complicated, can damage sealing ring yet.
Summary of the invention
The minute-pressure pan, be the critical point that approaches boiling of a kind of water temperature of keeping all the time in the pot [the temperature error scope of interior pot preferably control ± 0.2 °～± 0.5 ° (degree centigrade)] but seldom surpass fluidizing point, food in the pot can be boiled near the fluidizing point temperature range, be not evaporated and the boil-off heat but do not have a large amount of water, the energy consumption that makes pan is not only less than pressure cooker but also be far smaller than common traditional electric cooker.Because its operating temperature is more constant, if can realize constant temperature work by electronic control mode, not only require its sensitive detection parts more stable but also relatively more accurate, the stability requirement of control system itself is also very high, adopts electronic control mode will make manufacturing cost than higher for this reason.Secondly the interior pot of minute-pressure pan generally is to work under airtight environment, also will consider the safety problem that it causes because of closed environment for this reason.The present invention attempts on the basis of existing technology, structure to the moving-cover type micropressure boiler is further improved, make the cooker He Hegai that when not working, uncaps easily, and the air that overflows before the boiling of discharge water in time, internally the water temperature of pot gives regulating more exactly.
For this reason, the present invention proposes a kind of moving-cover type minute-pressure pan, comprises pot body and pot cover, is provided with interior pot in the described pot body, pot sealing device in being provided with between described pot cover and the described interior pot, described pot body or pot cover are provided with the signaling switch of the described pot cover movable signal of sensing; Described pot cover is that structure of two layers comprises described inner cap and shell body, couples together by elastic sealing element between described inner cap and the described shell body; It is characterized in that the inner cap of described pot cover is provided with the low pressure gas bleeder valve; Rotary transmission arm is set between the inner cap of described signaling switch and described pot cover; When covering in the described pot cover when moving, described transmission arm drives described signaling switch action.
Described moving-cover type minute-pressure pan, the pan that refers to that its pot cover can move up or stir around its hinge under certain minute-pressure drives, when its pot cover moves, not only can discharge the steam of having vaporized but also the power supply that can cut off heater immediately, thereby prevent that water temperature from continuing to raise or prevent that the water in the pot from further absorbing heat and continuing vaporization.
Described pot body is the main supporting part of described minute-pressure pan, is provided with the electric-control system of interior pot, heater and described minute-pressure pan in it; Described pot cover on described pot body and and described in arrange between the pot in the pot sealing device, thereby by pot sealing ring in described not only can gather the steam pressure in the pot and also can make described in the interior food of pot under situation about sealing, cook.Because the internal pressure of described minute-pressure pan is very little, adopt described sealing device can adopt interior pot ring structure for this reason, under the inspiration of the basic functional principle of this kind pan, can also adopt with described pot cover with described between the pot edge of pot by flat seal (utilize the planes of two relative contacts well and the water realization that is positioned on this contact-making surface seals), annular groove and convex tendon cooperate (utilize convex tendon to insert annular groove and utilize water remaining in annular groove to realize sealing) etc. any described pot cover with described in pot between the scheme of the relative sealing of realization, all be some technical schemes that are equal to.Pot sealing ring scheme in the technical program first-selection is the selection of making for to the consideration of factors such as manufacturing cost, traditional mature technology.
Described pot body or pot cover are provided with the signaling switch of movable signal that can the described pot cover of sensing, and when referring to that the pressure-driven of described pot cover in interior pot moves, described signaling switch can pick up the displacement signal that described pot cover moves directly or indirectly.Described signaling switch is a kind of electrical equipment control part, for example monostable microswitch, near switch or photoelectric sensor switch etc., it can pick up described pot cover on cut off the power supply of the power supply of heater or the control system cut-out heater by described minute-pressure pan behind the shifting signal.When described pot cover lost driving force and moves down, described signaling switch resetted described heater is resumed work again.In order to make the work of described minute-pressure pan have certain intelligent function, be preferably in the control system of described minute-pressure pan the self-clocking function is set again, namely can determine the time rhythm of heating again automatically according to kettle temperature, pressure and other parameters in the described signaling switch described control system in back that resets.
Described pot cover can be the structure of individual layer, also can be structure of two layersBe under the double-deck situation at described pot cover, described low pressure gas bleeder valve also can be set directly at described pot cover in cover, thereby can be to be rigidly connected when described inner cap pressurized, the whole cooker caping to be risen to stir between the shell body of described inner cap and described pot cover; Also can be by elastic sealing element as silicon rubber with as described in inner cap and as described in couple together between the shell body of pot cover, during described inner cap pressurized only be described inner cap move on the whole or monolateral on move and the other parts of described pot cover are mobile, cover in described and drive described signaling switch action when moving; And the steam that discharges from described low pressure gas bleeder valve or air can be discharged into the outside by the shell body that other passages pass described pot cover.
Described low pressure gas bleeder valve is that a kind of water in interior pot does not seethe with excitement and pot inner pressure when being in lower state, can keep described in the pot and the outside between air unimpeded, keep internal and external pressure balance and can discharge naturally in the pot in low-pressure air and the valve body of minor amount of water steam.Because the water in described in the pot reaches and has that a large amount of air overflows before the boiling point inevitably and accumulating in in the pot from water and food, before the while, the water in described pot reached boiling point, the water that always has denier was vaporized because local heating is too fast; In described moving-cover type minute-pressure pan, because the weight of described pot cover or described inner cap is generally all low weight, if untimely discharge will cause the vapour pressure in the described interior pot to rise, described pot cover or described inner cap will reach boiling point movement in the past and then cause described signaling switch to move prematurely by the water in interior pot, not only belong to misoperation and move prematurely.Secondly since described low pressure gas bleeder valve can under the situation of low pressure, keep described in pot and the outside between air unimpeded, naturally the low-pressure air in discharging in the pot, thus negative pressure or the malleation in the pot makes the folding lid easily in can certainly eliminating in the moment of the described pot cover of opening and closing.But during owing to water vapor, its volumetric expansion increases nearly about 1600 times, water in the pot is approaching or when reaching boiling point in described for this reason, and because the inertia of heating, can make the water phenomenon that appearance is vaporized and carried out the transition to a small amount of vaporization even carry out the transition to a large amount of vaporizations fast from trace in the extremely short time in the described interior pot, vapour pressure in this moment is described in the pot sharply rises, cause described low pressure gas bleeder valve to be closed, described pot cover or described inner cap are also mobile thereupon, promote the action of described signaling switch and cut off the electricity supply, stop the work to heater.Compression area and the operating pressure value (peak that described low pressure gas bleeder valve bears pressure is set in other words) of described low pressure gas bleeder valve are set for this reason rightly, preferably the operating pressure value control with described low pressure gas bleeder valve is carrying out the transition to the process of a small amount of vaporization from the trace vaporization at water, just can cooperate with described pot cover, regulate the scope of the water temperature in the described interior pot, also can reduce the evaporating capacity of water.
Be compared with the prior art, described low pressure gas bleeder valve not only can discharge or absorb air and keep the inside and outside pressure balance of pot, be conducive to the action of folding lid, also can prevent described pot cover or the water of described signaling switch in pot reach near the boiling point before misoperation, can cooperate with described pot cover (or described inner cap) again, the scope that common water temperature of regulating in the described interior pot rises and the evaporating capacity that reduces water, thus make described moving-cover type minute-pressure pan satisfy different functions of use.
Further technical scheme can also be, in described pot cover, cover the first lid hole is set, in the described first lid hole, described low pressure gas bleeder valve is set, described low pressure gas bleeder valve comprises and can cover first up and down in the hole disappointing spool described first, described first loses heart has the gap between spool and the described inner cap, described first bottom of losing heart spool is provided with first sealing ring, has the gap between described first sealing ring and the described inner cap.
The described first disappointing spool has rod body part at least, and namely the described first disappointing spool can be to be shapes such as " I " font, " T " font, " worker " font.Described first spool that loses heart can freedom be arranged in the described first lid hole versatilely, and described first lose heart and have the gap between spool and the described inner cap (be described first lose heart the external diameter of rod body part of spool less than the internal diameter in the described first lid hole) thus allow described in interior steam or the air of pot can pass.Described first locate mode of losing heart spool also has multiple design, mainly is to select according to described first concrete structure that loses heart spool.In first bottom of rod body part of losing heart spool first sealing ring is set.For the weight size of the described first disappointing spool is set rightly, can also blind hole be set in described first centre of losing heart spool, come the weight of the adaptive described first disappointing spool according to different blind hole sizes.
Has the gap between described first sealing ring and the described inner cap, refer to have certain clearance between the lower surface of the upper surface of described first sealing ring and described inner cap, thereby the air in described when the described first disappointing spool does not move in the pot or steam can discharge by this gap, described first gap of losing heart between spool and the described inner cap, and when moving on the described first disappointing spool, described first sealing ring can be blocked the outlet passageway that above-mentioned gap is formed.The cross section of wherein said first sealing ring can be O shape or U-shaped, forms a kind of buffering when spool moves thereby described first sealing ring can be lost heart described first.
In order to make air or steam in the described interior pot overflow smooth and easy, be under the situation of " T " font or " worker " font at the described first disappointing spool, preferably the contact-making surface between the protrusion limit, top of described inner cap and the described first disappointing spool is provided with boss or matsurface, namely can boss or matsurface be set at described inner cap upper surface, the lower surface that also can protrude the limit on described first top of losing heart spool arrange boss or matsurface, thereby is convenient to air or steam can pass these boss or overflow in the formed space of matsurface.
According to technique scheme, when heater work make described in the water temperature of pot rise, before near boiling point, overflow with regard to having a large amount of air, and air when overflowing because it can be at leisure overflows and can not form pressure rapidly in the pot described in from described first Gai Kongzhong, the described first disappointing spool moves on not understanding; When the water temperature of pot rises near boiling point in described, a spot of hydrone vaporization is sharply expanded (ratio of volumetric expansion is approximately 1600 times) and is overflowed the water surface, the water surface of pot forms certain air pressure in described rapidly, this air pressure can promote described first immediately and lose heart and to move on the spool and seal the described first lid hole, and the inner cap that can promote described pot cover or described pot cover moves and then drives described signaling switch action, the power supply that cuts off heater makes it stop heating immediately, stops the water in the described interior pot further to be vaporized.When the temperature decline steam pressure in described in the pot reduced, described first spool that loses heart fell, and described pot cover or inner cap, described signaling switch also reset, and heater begins to heat again.
Can find according to technique scheme, steam pressure decline in described in the pot, the time point that described signaling switch resets is that described first disappointing spool point resetting time is also extremely important to the water temperature fall of controlling in the described interior pot, if namely obviously reduce and air pressure in described in pot and when obviously not reducing in water temperature, if the described first disappointing spool does not still reset, then cause the water temperature fall excessive, the time that has delayed to boil food.It is necessary controlling described first disappointing spool point resetting time rightly for this reason.For this reason, the present invention has made and has further made following improvement project:
(1) further technical scheme can also be to comprise also driving the back-moving spring that described transmission arm resets that described back-moving spring is connected between the shell body and described transmission arm of described pot cover.One end of described back-moving spring is connected on the described shell body, the other end is connected on the described transmission arm, the elastic force of described like this back-moving spring is by the transmission of described transmission arm, increase the rising resistance can for the described first disappointing spool, also can apply the screen resilience that resets, open the described first disappointing spool ahead of time and make it discharge remaining steam early, described signaling switch is resetted early; Secondly described back-moving spring also can be located described transmission arm and is unlikely to rock at pot cover.
(2) further technical scheme can also be, also comprises pressure spring, and described pressure spring is pressed on the described first disappointing spool.According to this scheme, in fact be exactly between the shell body of described pot cover and the described first disappointing spool, the damping spring that pressure limiting is used to be set, namely in the described first disappointing spool uphill process, increase by the described first disappointing spool rising resistance, in the described first disappointing spool reseting procedure, increase the reseting elasticity of the described first disappointing spool, can open the described first disappointing spool so ahead of time and make it discharge remaining steam early, described signaling switch is resetted early.
Such scheme can separately use also can merge use.
According to technique scheme, because the cavity volume of the interior pot of described minute-pressure pan is to work under the state of basic sealing, can also be for this reason:
(3) further technical scheme can also be, described first center of losing heart spool be provided be communicated with described in first through hole of pot, arrange in described first through hole can be up and down the second disappointing spool; Described second loses heart has the gap between spool and the described first disappointing spool, and described second top of losing heart spool is provided with second sealing ring; When moving on the described second disappointing spool, described second sealing ring can be opened described first through hole; The described first disappointing spool is littler than the described second disappointing spool voltage endurance capability.In fact, the structure of the structure of the described second disappointing spool and the described first disappointing spool is basic identical, different is the out of position of their sealing ring settings separately, and the pressure that they can bear is not of uniform size to be caused, and described second loses heart ability that spool should be designed to bear pot interior pressure greatly obviously.According to this scheme, the described first disappointing spool is littler than the described second disappointing spool voltage endurance capability, refer in described inner pot pressure uphill process, described first spool that loses heart moves at first, when having only in described pressure in the pot to continue to rise to a bigger force value, the described second disappointing spool just up moves, and forces to discharge the interior high steam of described interior pot, and this function class is similar to the safety valve of pressure cooker; Otherwise when the pressure in described in the pot descends, the described second disappointing spool at first moves down the steam that keeps in the described interior pot and has certain pressure, have only the steam in the pot gives in described thrust can not offset described first lose heart the resetting during screen resilience of spool, described first just past the moving down of spool of losing heart.Secondly, the described second disappointing spool can also discharge owing to closing fast and cover the barotropic gas that occurs in the pot that causes, thereby can realize closing fast lid.
According to technique scheme, can also be that described first position that arranges of losing heart spool and the described second disappointing spool is transferred conversely, be about to the described first disappointing spool and be arranged in second through hole of the described second disappointing spool, and the described second disappointing spool is arranged on described first Gai Kongzhong.
(4) further technical scheme can also be, the inner cap of described pot cover be provided be communicated with described in the second lid hole of pot, arrange in the described second lid hole can be up and down second spool that loses heart; Described second loses heart has the gap between spool and the described inner cap, and described second top of losing heart spool is provided with second sealing ring, and the described first disappointing spool is littler than the described second disappointing spool voltage endurance capability; When moving on the described second disappointing spool, described second sealing ring can be opened the described second lid hole.This scheme and the contrast of above-mentioned (3) scheme, difference are that the described second disappointing spool and the described first disappointing spool separate setting, but function and effect basically identical.
The another kind of structure that forms described low pressure gas bleeder valve is, in described pot cover, cover the first lid hole is set, described low pressure gas bleeder valve comprises the elastic arm and the obstruction that is arranged on the described elastic arm that is arranged on the following of described inner cap and is connected in the described first lid hole lateral location, and described obstruction has the gap between the described first lid hole and described obstruction and described inner cap.
Described elastic arm is a kind of self rubber-like parts, not only can support described obstruction but also described obstruction is resetted.Described obstruction is a kind of parts that the described first lid hole can be sealed, and when pot inner pressure rose to certain force value, described being blocked in the pot inner pressure promotion down moved, and sealed the described first lid hole; The inner cap of described pot cover or described pot cover moves under pot inner pressure promotes subsequently.The pressure spot that moves in the described obstruction moves the pressure spot that cuts off heater power source in other words on the described pot cover for this reason, and key depends on compression area and the intrinsic elastic force of described elastic arm of described obstruction.Reasonably determine compression area and the intrinsic elastic force of described elastic arm of described obstruction, just can be with the temperature control ratio of pot in described scope more accurately.
Described obstruction is over against the described first lid hole, the top ends that refers to described obstruction can be to be positioned at outside, the described first lid hole fully, also can be that described first Gai Kongzhong is filled in the described obstruction of part in advance, but fill in the external diameter of the part in the described first lid hole in advance less than the internal diameter of described first perforate, have exhaust clearance between them thereby make.
Further technical scheme can also be, the inner cap of described pot cover be provided be communicated with described in the second lid hole of pot, arrange in the described second lid hole can be up and down second spool that loses heart; Described second loses heart has the gap between spool and the described inner cap, and described second top of losing heart spool is provided with second sealing ring; When moving on the described second disappointing spool, described second sealing ring can be opened the described second lid hole; Described obstruction is littler than the described second disappointing spool voltage endurance capability.
According to technique scheme, when heater work make described in the water temperature of pot rise, before near boiling point, overflow with regard to having a large amount of air, and air when overflowing since its can be at leisure from described first Gai Kongzhong overflow and described in pot in can not form pressure rapidly, described obstruction moves on not understanding; When the water temperature of pot rises near boiling point in described, a spot of hydrone vaporization is sharply expanded (ratio of volumetric expansion is approximately 1600 times) and is overflowed the water surface, the water surface of pot forms certain air pressure in described rapidly, this air pressure can promote immediately to move in the described obstruction and seal described first the lid hole, and can promote described pot cover or described pot cover in cover shift-in and drive the action of described signaling switch, the power supply that cuts off heater makes it stop heating immediately, stops the water in the described interior pot further to be vaporized.If the vapour pressure in described in the pot is too high, just can starts described second spool that loses heart again and make on it and move, by the described second spool pressure pressure release of losing heart.When the temperature decline steam pressure in described in the pot reduces, reset under the described elastic force effect that is blocked in self, described pot cover or inner cap, described signaling switch also reset, and heater begins to heat again.
Be compared with the prior art, technical solution of the present invention has not only significantly reduced the consumption of energy, and accurately controls temperature, can make pot cover smooth and easy in unlatching and closed procedure again, can also discharge the air in the pot in time.Because the present invention has These characteristics and advantage, can be applied in the utensils for kitchen use such as minute-pressure pan such as electric cooker, soup clay pot, slow cooker.
Description of drawings
Fig. 1 is the structural representation of using first kind of embodiment of technical solution of the present invention;
Fig. 2 is the A portion enlarged drawing among Fig. 1;
Fig. 3 is the enlarged diagram that the described low pressure gas bleeder valve 5 and described first among first kind of embodiment covers hole 14 package assemblies;
Fig. 4 is the partial structurtes schematic diagram of using second kind of embodiment of technical solution of the present invention;
Fig. 5 is the partial structurtes schematic diagram of using the third embodiment of technical solution of the present invention;
Fig. 6 is the partial structurtes schematic diagram of using the 4th kind of embodiment of technical solution of the present invention;
Fig. 7 is the partial structurtes schematic diagram of using the 5th kind of embodiment of technical solution of the present invention;
Fig. 8 is the partial structurtes schematic diagram of using the 6th kind of embodiment of technical solution of the present invention;
Fig. 9 uses described in first kind of embodiment of technical solution of the present invention the first another kind of structural representation that loses heart spool;
Figure 10 is the primary structure schematic diagram of using the 7th kind of embodiment of technical solution of the present invention.
The specific embodiment
Below in conjunction with accompanying drawing the embodiment of concrete application technical solution of the present invention is explained.
Embodiment one
As shown in Figure 1, a kind of moving-cover type minute-pressure pan, comprise pot cover 1, pot body 2, interior pot 3 and heater 21, wherein said pot body 2 is main supporting parts of described minute-pressure pan, the electric-control system of described interior pot 3, heater 21 and described minute-pressure pan is set in it, described pot cover 1 the top of described pot body 2 and and described in be provided with between the pot 3 in pot sealing ring 31, described pot of body 2 is provided with signaling switch 4.
Wherein said pot cover 1 comprises shell body 12 and inner cap 11, and described inner cap 11 is connected in the described shell body 12 by elastic silicone rubber 120, and described pot cover 1 is articulated and connected and can stirs by the articulated mounting 13 that arranges between its shell body 12 and the described pot body 2.Pot 3 is arranged in the described pot body 2 in described, the periphery (sidepiece is or/and the bottom) of pot 3 is provided with heater 21 in described, described heater 21 can be fitted in described in pot 3 appearance, also can in described pot body 2, be provided with under the situation of outer pot 23 and be fitted on the outer surface of outer pot 23.Described heater 21 is electrically connected with the control system of described minute-pressure pan.
Described signaling switch 4 is arranged on the top of described pot body 2, between the inner cap 11 of described signaling switch 4 and described pot cover 1, transmission arm 6 is set, the top turning arm 61 of described transmission arm 6 withstands on inner cap 11 upper surfaces of described pot cover 1, is provided with between described signaling switch 4 and the described transmission arm 6 and keeps away water cover 7.Described transmission arm 6 by splicer 62 be hinged on extend out on the described shell body 12 support arm 111 on, when moving on the described inner cap 11, can drive described transmission arm 6 like this and rotate around described support arm 111.Secondly on the right side of described splicer 62 back-moving spring 63 is set, one end of described back-moving spring 63 is connected on the shell body 12 of described pot cover 1, the other end connects described transmission arm 6, thereby described back-moving spring 63 not only can increase the rotatory force of described transmission arm 6, and can be located described transmission arm 6 again and prevent that it from rocking.
As shown in Figure 2, the described water cover 7 of keeping away is the mountain font, and wherein said two side arms 72 of keeping away water cover 7 is provided with barb 73 and can be connected to up or down on the outer wall of described pot body 2, and described intermediate arm body 71 roof pressures of water cover 7 of keeping away are on the button of described signaling switch 4; Described arranged outside of keeping away the two side arms 72 of water cover 7 has annular wall 73, and described pot body 2 is provided with the vertical wall 22 adaptive with described annular wall 73, and described vertical wall 22 inserts in the described annular wall 73.The described like this water cover 7 of keeping away can slide at described vertical wall 22 but can not deviate from, and outside pollutant can not enter in the described pot body 2 yet; Secondly the holding wire of described signaling switch 4 also can be connected on the described pot cover 1.Can also prevent that the described deadweight that keeps away water cover 7 from causing described signaling switch 4 misoperations, can assist described transmission arm 6 to reset again at described vertical wall 22 and the described spring (not drawing among the figure) that the usefulness that resets is set between the water cover 7 of keeping away in addition.
As a kind of scheme that is equal to, can also be to remove described transmission arm 6, the edge that utilizes described pot cover 1 directly lid be pressed in described keep away water cover 7 above, be rigidly connected between described inner cap 11 and the described shell body 12, when described inner cap 11 pressurizeds, whole described pot cover 1 is also stirred thereupon, thereby the edge of described pot cover 1 can drive the disconnection of described signaling switch 4 with closed, also can discharge the steam of having vaporized after described pot cover 1 stirs.
As shown in figures 1 and 3, the inner cap 11 of described pot cover 1 is provided with the first lid hole 14, the described first lid hole 14 peripheries curl and have curled portion 110, thereby improve the structural strength in the described first lid hole 14 and the sealing effectiveness between first sealing ring 51 and the described inner cap 11.Described low pressure gas bleeder valve 5 comprises first disappointing spool 50 and first sealing ring 51; The described first disappointing spool 50 is the body of rod of " T " font, the middle body of rod pass the described first lid hole 14 and and described inner cap 11 between have the gap, described first top of losing heart spool 50 has the limit 52 of protrusion, first sealing ring 51 is fixedly arranged at the bottom, the cross section of described first sealing ring 51 is " U " font, can certainly be hollow or solid O shape.Also has the gap between the upper surface of described first sealing ring 51 and described inner cap 11 lower surfaces.The body of rod of described low pressure gas bleeder valve 5 is suspended in the described first lid hole 14 by described protrusion limit 52, the lower surface on described protrusion limit 52 also arranges small boss 53, thus convenient air from described protrusion limit 52 and described in pot between 12 the gap that has of contact-making surface discharge.
As shown in Figure 9, described first fixing described first sealing ring 51 in bottom that loses heart spool 50 is the arc that is bent upwards, and the water that accumulates in like this on described first sealing ring 51 can directly flow away when uncapping.
As shown in figure 10, the left side of described inner cap 11 is limited by fulcrum 121, and described inner cap 11 can be around described fulcrum 121 monolateral movements; Also be provided with guide pillar 122 below the middle part of described shell body 12, the middle part of described inner cap 11 arranges the hole and is set in the described guide pillar 122, between described guide pillar 122 and described inner cap 11 sealing ring 55 is set, and prevents that the pressure gas in the pot from revealing from this hole.Can touch described signaling switch 4 when described inner cap 11 is monolateral when mobile like this.
According to technique scheme, rationally determine weight and the floor space thereof of the described first disappointing spool 50, described first sealing ring 51, just can determine the starting point specified pressure of moving on the described first disappointing spool 50.Before not working, this device needs described pot cover 1 is closed when covering, gap between the inner cap 11 of the upper surface of described first sealing ring 51 and described pot cover 1 can be discharged and be closed lid smoothly because closing the positive pressure air that forms of lid in the pot, can certainly when opening fast described pot cover 1, eliminate described in negative pressure in pot 3 cavity volumes, making uncaps becomes smooth; In the process that described heater 21 heats the food in the pot, the air that gathers in food and the water can at first overflow, these air that overflow also can be discharged in the gap between the inner cap 11 of described first lid hole 14, described first sealing ring 51 and described pot cover 1, do not move on the described first disappointing spool 50 and can not make, prevent the misoperation before water temperature reaches boiling point of described signaling switch 4; The air of discharging from described low pressure gas bleeder valve 5 or water vapour are being discharged from be arranged on described shell body 12 upper air-vents (not drawing the figure).When described heater 21 is heated to the food in the pot boiling point near water, because water becomes about 1600 times of steam state volumetric expansion from liquid state under a standard atmospheric pressure environment, also namely at first reach after the low amounts of water vaporization of boiling point immediately pressure with space in the pot in the pot and improve and promote described first and lose heart and move on the spool 50, described first sealing ring 51 also seals the described first lid hole 15 thereupon.Make the pressure in the pot continue to raise though still have a spot of water to vaporize this moment, but described inner cap 11 is forced to move, touch described signaling switch 4 immediately by described transmission arm 6 and cut off described heater 21, the vaporescence of water is stopped, thereby make the temperature in the pot can significantly, integrally not surpass boiling point.Water in pot and gas temperature falling pressure also can decrease, and the described first disappointing spool 50 moves down and resets, and described signaling switch 4 is connected described heater 21 and begun heating again, so circulation.This shows that the gas discharge rate in the pot is considerably less, thereby it is also few that heat is distributed; Secondly by setting the working value of described low pressure gas bleeder valve 5, also can with described inner cap 11 fit adjustment accuracy of temperature control.
Embodiment two
As shown in Figure 4, different with embodiment one is that described signaling switch 4 is arranged in the described pot cover 1, and described signaling switch 4 is connected in the described pot cover 1 by support.
Embodiment three
As shown in Figure 5, different with embodiment one or embodiment two is, the center of described low pressure gas bleeder valve 5 be provided be communicated with described in first through hole 54 of pot 3, arrange in described first through hole 54 can be up and down the second disappointing spool 80; Described second loses heart has the gap between spool 80 and the described first disappointing spool 50, described second top of losing heart spool 80 is provided with second sealing ring 81, described second bottom of losing heart spool 80 has the limit 82 of protrusion, and the upper surface on described protrusion limit 82 arranges small boss 83; When moving on the described second disappointing spool 80, described second sealing ring 81 can be opened described first through hole 54; The described first disappointing spool 50 is littler than described second disappointing spool 80 voltage endurance capabilities.In fact, the structure of the structure of the described second disappointing spool 80 and the described first disappointing spool 50 is basic identical, different is the out of position of their sealing ring settings separately, and the pressure that they can bear is not of uniform size to be caused, described second loses heart ability that spool 80 should be designed to bear pot interior pressure greatly obviously, in described the pot 3 pressure uphill process in, described first spool 50 that loses heart moves at first, when having only in described pressure in the pot 3 to continue to rise to a bigger force value, the described second disappointing spool 80 just up moves, discharge the high steam in the described interior pot 3, prevent that too high steam from damaging described interior pot 3 and pot cover 1, this function class is similar to the safety valve of pressure cooker; Otherwise when the pressure in described in the pot 3 descends, the described second disappointing spool 80 at first moves down steam that keep in the described interior pot 3 and has certain pressure, have only the steam in the pot 3 gives in described thrust can not offset described first lose heart the resetting during screen resilience of spool 50, described first just past the moving down of spool 50 of losing heart.Secondly, the described second disappointing spool 80 can also discharge owing to closing fast and cover the barotropic gas that occurs in the pot that causes, thereby can realize closing fast lid.
Embodiment four
As shown in Figure 6, different with embodiment three is, described first position that arranges of losing heart spool 50 and the described second disappointing spool 80 is transferred conversely, be about to the described first disappointing spool 50 and be arranged in second through hole 84 of the described second disappointing spool 80, and the described second disappointing spool 80 is arranged in the described first lid hole 14.
Embodiment five
As shown in Figure 7, different with embodiment one is, at described inner cap 11 the second lid hole 15 is set, arrange in the described second lid hole 15 can be up and down second spool 80 that loses heart; The described second disappointing spool 80 is inverted T-shape, described second body of rod top of losing heart spool 80 arranges second sealing ring 81, described second disappointing spool 80 bearing capacities are far longer than the bearing capacity of the described first disappointing spool 50, when extreme high pressure occurring in the pot 3 in described like this, when moving on the described second disappointing spool 80, described second sealing ring 80 can be opened the described second lid hole 15 and discharge a pot inner high voltage.According to this structure, described second spool 80 that loses heart also can be alleviated and closes lid fast and the poly-positive air pressure that increases in the pot 3 in causing; Secondly pot 3 is heated supercharging and the described first disappointing spool 50 is moved after closing in described, and described interior pot 3 internal pressures continue to rise, and then open the described second disappointing spool 80, guarantee the use safety of described minute-pressure pan.
Between the described first disappointing spool 50 and described shell body 12 pressure spring 91 is set, losing heart described second arranges pressure spring 92 between spool 80 and the described shell body 12.Described pressure spring (91,92) not only can be regulated on the described first disappointing spool 50 or the described second disappointing spool 80 and move required pressure, thereby also can help the described first disappointing spool 50 to move down early described signaling switch 4 is resetted early, thereby make adjustment more accurate.The elastic pressure of described pressure spring (91,92) can fixedly install constantly, also can also be regulated by a special governor motion.
Embodiment six
As shown in Figure 8, different with embodiment five is, cancel described first disappointing spool 50 and first sealing ring 51 thereof, below described inner cap 11, be provided with and stop up 85, elastic arm 86 and support the holder 87 of described elastic arm 86, the external diameter on top of the described first lid hole 14 and described obstruction 85 is stretched into less than about 5 millimeter of internal diameter in the described first lid hole 14 in the top of described obstruction 85; Wherein said obstruction 85, elastic arm 86 are the manufacturings of heat-resistant silicon rubber.For rigidity or the elastic force that improves described elastic arm 86, can also in described elastic arm 86, hide an elastic sheet metal or plastic sheet.When described obstruction 85 pressurizeds, can seal the described first lid hole 14 like this, if the vapour pressure in the pot continues to rise, then can start described second and lose heart and move a high steam of forcing to discharge in the pot on the spool 80.
Embodiment seven
As shown in figure 10, with the main difference of embodiment two be, the left side of described inner cap 11 is limited by fulcrum 121, described inner cap 11 can be around described fulcrum 121 monolateral movements; Also be provided with guide pillar 122 below the middle part of described shell body 12, the middle part of described inner cap 11 arranges the hole and is set in the described guide pillar 122, between described guide pillar 122 and described inner cap 11 sealing ring 55 is set, and prevents that the pressure gas in the pot from revealing from this hole.When moving on the right of described inner cap 11, can touch described signaling switch 4 like this.
Claims (9)
1. moving-cover type minute-pressure pan comprises pot body and pot cover, is provided with interior pot in the described pot body, pot sealing device in being provided with between described pot cover and the described interior pot, and described pot body or pot cover are provided with the signaling switch of the described pot cover movable signal of sensing; Described pot cover is that structure of two layers comprises inner cap and shell body, couples together by elastic sealing element between described inner cap and the described shell body; It is characterized in that the inner cap of described pot cover is provided with the low pressure gas bleeder valve; Rotary transmission arm is set between the inner cap of described signaling switch and described pot cover; When covering in the described pot cover when moving, described transmission arm drives described signaling switch action.
2. moving-cover type minute-pressure pan according to claim 1 is characterized in that, also comprises driving the back-moving spring that described transmission arm resets, and described back-moving spring is connected between the shell body and described transmission arm of described pot cover.
3. moving-cover type minute-pressure pan according to claim 1 and 2, it is characterized in that, in described pot cover, cover the first lid hole is set, described low pressure gas bleeder valve is included in first up and down in the described first lid hole disappointing spool, described first loses heart has the gap between spool and the described inner cap, described first bottom of losing heart spool is provided with first sealing ring, has the gap between described first sealing ring and the described inner cap.
4. moving-cover type minute-pressure pan according to claim 3, it is characterized in that, the described first disappointing spool is " T " font or " worker " font, has small boss, groove or matsurface on the contact-making surface between the protrusion limit, top of the inner cap of described pot cover and the described first disappointing spool.
5. moving-cover type minute-pressure pan according to claim 3 is characterized in that, described first center of losing heart spool be provided be communicated with described in first through hole of pot, the second up and down disappointing spool is set in described first through hole; Described second loses heart has the gap between spool and the described first disappointing spool, and described second top of losing heart spool is provided with second sealing ring; When moving on the described second disappointing spool, described second sealing ring is opened described first through hole; The described first disappointing spool is littler than the described second disappointing spool voltage endurance capability.
6. moving-cover type minute-pressure pan according to claim 3 is characterized in that, the inner cap of described pot cover be provided be communicated with described in the second lid hole of pot, arrange in the described second lid hole can be up and down second spool that loses heart; Described second loses heart has the gap between spool and the described inner cap, and described second top of losing heart spool is provided with second sealing ring; When moving on the described second disappointing spool, described second sealing ring is opened the described second lid hole; The described first disappointing spool is littler than the described second disappointing spool voltage endurance capability.
7. moving-cover type minute-pressure pan according to claim 3 is characterized in that, also comprises pressure spring, and described pressure spring is pressed on the described first disappointing spool.
8. moving-cover type minute-pressure pan according to claim 1 and 2, it is characterized in that, in described pot cover, cover the first lid hole is set, described low pressure gas bleeder valve comprises the elastic arm and the obstruction that is arranged on the described elastic arm that is arranged on the following of described inner cap and is connected in the described first lid hole lateral location, and described obstruction has the gap between the described first lid hole and described obstruction and described inner cap.
9. moving-cover type minute-pressure pan according to claim 8 is characterized in that, the inner cap of described pot cover is provided with the second lid hole of the described interior pot of connection, and the second up and down disappointing spool is set in the described second lid hole; Described second loses heart has the gap between spool and the described inner cap, and described second top of losing heart spool is provided with second sealing ring; When moving on the described second disappointing spool, described second sealing ring is opened the described second lid hole; Described obstruction is littler than the described second disappointing spool voltage endurance capability.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201110143300 CN102204782B (en) | 2011-05-25 | 2011-05-25 | Movable-cover-type micropressure cooker |
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| CN 201110143300 CN102204782B (en) | 2011-05-25 | 2011-05-25 | Movable-cover-type micropressure cooker |
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| CN102204782B true CN102204782B (en) | 2013-09-04 |
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Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104116398B (en) * | 2013-04-28 | 2016-10-19 | 美的集团股份有限公司 | Pressure cooker |
| CN103211514B (en) * | 2013-05-13 | 2016-08-10 | 浙江苏泊尔家电制造有限公司 | Electric cooker |
| CN108261064A (en) * | 2016-12-31 | 2018-07-10 | 浙江绍兴苏泊尔生活电器有限公司 | food preparation appliance |
| CN108261058B (en) * | 2016-12-31 | 2024-01-26 | 浙江绍兴苏泊尔生活电器有限公司 | Food preparation appliance |
| CN106909103B (en) * | 2017-02-03 | 2019-12-24 | 中山市千帕电器科技有限公司 | Method for carrying out computer intelligent cooking control based on sensing data |
| CN109330360B (en) * | 2018-11-30 | 2024-04-02 | 汕头市天际电器实业有限公司 | Micro-pressure water-stop stewpot |
| CN110025214B (en) * | 2019-04-10 | 2021-06-04 | 饭否(北京)科技有限公司 | Pressure-adjustable heating cooker |
| CN112806827B (en) * | 2019-11-18 | 2022-04-08 | 佛山市顺德区美的电热电器制造有限公司 | Control method, control device, cooking appliance and computer-readable storage medium |
| CN112869550B (en) * | 2019-11-30 | 2022-01-25 | 佛山市顺德区美的电热电器制造有限公司 | Control method and device of cooking appliance, cooking appliance and storage medium |
| CN114431702B (en) * | 2020-11-04 | 2023-05-05 | 佛山市顺德区美的电热电器制造有限公司 | Control method, control device, pressure cooking appliance and storage medium |
| CN113273891B (en) * | 2021-04-25 | 2022-03-22 | 淮北博桓新能源科技有限公司 | Pressure relief device of pressure cooker |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2086562U (en) * | 1990-08-01 | 1991-10-16 | 王永光 | Full-sealed automatic pressure cooker |
| CN2529585Y (en) * | 2001-07-04 | 2003-01-08 | 广东银港集团有限公司 | Explosion-proof fast decompression valve |
| CN2638604Y (en) * | 2003-07-18 | 2004-09-08 | 徐步明 | Safety valve of pressure cooker |
| CN201239010Y (en) * | 2008-07-22 | 2009-05-20 | 珠海格力电器股份有限公司 | Adjustable-pressure pressure pot |
| CN201312734Y (en) * | 2008-11-28 | 2009-09-23 | 美的集团有限公司 | Pressure-overflow safety device for pressure electric cooker |
| CN201551181U (en) * | 2009-11-05 | 2010-08-18 | 杨彪 | Soup and porridge pot cover |
| CN101862129B (en) * | 2010-06-20 | 2013-12-11 | 王永光 | Movable cover controlling device |
| CN202051512U (en) * | 2011-05-25 | 2011-11-30 | 广东伊立浦电器股份有限公司 | Movable cover type micro-pressure cooker |
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Address after: 528200 Foshan, China, Nanhai District, Songgang Industrial Park, Industrial Park Road West Patentee after: DEA GENERAL AVIATION CO., LTD. Address before: 528234 Foshan, China, Nanhai District, Songgang Industrial Park, Industrial Park Road West Patentee before: Guangdong Elecpro Electric Appliance Holding Co., Ltd. |