CN206333772U - Brokenly bubble steam valve and electric cooker - Google Patents

Abstract

The utility model discloses a kind of brokenly bubble steam valve and electric cooker, brokenly bubble structure is provided with the steam valve pocket (B) of brokenly bubble steam valve, it includes rolling element (1) and brokenly bubble chamber (B1), brokenly bubble chamber has air inlet and gas outlet, the bottom wall of brokenly bubble chamber is formed as the roll tilt wall (21) tilted upward, rolling element (1) can scroll up along roll tilt wall under bottom steam promotion or be scrolled down through under self gravitation effect, meet：G is the gravity of rolling element；P is the pressure difference between the vapor pressure of bottom and the vapor pressure at top of brokenly bubble chamber, and P=50~300pa；S be vapor action in the active area on rolling element, and S=90~180mm², a is the slanted angle of roll tilt wall with respect to the horizontal plane, and a=5 °~30 °.Brokenly bubble steam valve and electric cooker of the present utility model can be effectively improved the control of internal pot minute-pressure, lift de-soak effect and simple in construction, practicality, it is easy to safeguard, clean.

Description

Brokenly bubble steam valve and electric cooker

Technical field

The utility model belongs to household appliance technical field, in particular it relates to assembled on a kind of electric cooker and the electric cooker Steam valve.

Background technology

With the lifting of people's quality of the life, the performance to household electrical appliance such as electric cookers proposes higher requirement, business men Competition it is more fierce, this from the common people not long ago go to Japan it is quick-fried buy the news such as electric cooker in it is visible typically.This demand to electric cooker Lifting and change be mainly reflected in and do not require nothing more than that quality is really up to the mark, and the rice mouthfeel made will get well, to meet popular need Ask.

In the production design process of electric cooker, generally internally pot, the design of coating and heating uniformity, heating control Mainly improved in terms of system, but the design of steam valve is also a critically important ring.In common electric pot, its steam valve The exhaust being only used for during cooking and de-soak, or even many steam valve de-soak effects be not obvious, and user is to product for influence Use good opinion, and regulation and the control function of the internal pot steam pressure of steam valve are also mostly defective, and this factor is also very big The final mouthfeel of rice is have impact in degree.

High cost, maintainable poor in addition, the design structure for the steam valve also having is excessively complicated exquisite, stability is not yet Height, the slip of bulb-breaking device is uncontrolled, is also not easy to cleaning.

Utility model content

For above-mentioned not enough or defect of the prior art, the utility model proposes a kind of brokenly bubble steam valve, and have The electric cooker of the brokenly bubble steam valve, to be effectively improved the control of internal pot minute-pressure, lifts de-soak effect and simple and compact for structure, Realize that steam valve is minimized, performance is reliable, practical, it is easy to safeguards, clean.

To achieve the above object, the utility model provides a kind of brokenly bubble steam valve, the steam valve pocket of the brokenly bubble steam valve Interior to be provided with brokenly bubble structure, the brokenly bubble structure includes rolling element and brokenly bubble chamber, and the brokenly bubble chamber has air inlet and gas outlet, The bottom wall of the brokenly bubble chamber is formed as the roll tilt wall tilted upward, is built in the rolling physical efficiency in the brokenly bubble chamber It is enough scrolled up in roll tilt wall described in the Steam Actuation lower edge entered from the air inlet or under self gravitation effect to It is lower to roll, and meet：

Wherein, G is the gravity of the rolling element；P is the vapor pressure and the steam gas at top of the bottom of the brokenly bubble chamber Pressure difference between pressure, and P=50~300pa；S be the vapor action in the active area on the rolling element, and S= 90~180mm², a is the slanted angle of the roll tilt wall with respect to the horizontal plane, and a=5 °~30 °.

Preferably, the roll tilt wall and the rolling element are respectively provided with smooth surface.

Preferably, the volume ratio of the steam valve pocket and the brokenly bubble chamber is not less than 5.

Preferably, the scope of the pressure difference P is 100pa~200pa.

Preferably, be formed with circular gap between the rolling element and the brokenly bubble chamber perisporium, the circular gap it is transversal Face area S1 is 50~100 square millimeters.

Preferably, 0.5~4mm circular gap is formed between the rolling element and brokenly bubble chamber perisporium.

Preferably, the rolling element is the roller of cylinder, lateral arrangement of the roller along the roll tilt wall, institute A diameter of D of roller is stated, axial length is L, the vapor action is in the active area S=D*L on the rolling element；And

The brokenly bubble chamber has rectangular cross section, and the width of the rectangular cross section is A1, and length is A2, the week To the cross-sectional area S1=A1*A2-D*L in gap,

Preferably, it is formed with the periphery wall of the roller on annulus fin, the roof and bottom wall of the brokenly bubble chamber respectively Be correspondingly formed with roof guide groove and bottom wall guide groove, the roller along the roll tilt wall roll when, the annulus fin is embedding Enter in the roof guide groove and bottom wall guide groove to be oriented to slip；

Wherein, it is each formed with the horizontal stroke between the outer peripheral face of the roller and the top wall surface and wall surface of the brokenly bubble chamber To gap.

Preferably, the both sides of the bottom wall guide groove are respectively formed with projected side wall protruding upward, the periphery of the roller Wall is supported on two projected side walls, and depth of the height of projection less than the bottom wall guide groove of the annulus fin.

Preferably, the circumferential two ends of the roller are extended with guide pillar, the both sides brokenly bubble chamber side wall point of the brokenly bubble chamber respectively The side wall guide groove parallel with the roll tilt wall is not formed with, and the guide pillar is stretched into the side wall guide groove with guiding movement The rolling element；

Wherein, the circular gap also includes vertical gap, and the depth of the side wall guide groove is less than the stretching of the guide pillar Length so that be formed with the vertical gap between the end face of the roller and the brokenly bubble chamber side wall of the brokenly bubble chamber.

Preferably, the brokenly bubble steam valve includes steam valve cap and steam valve seat, the steam valve cap and the steam valve Seat is interconnected so as to form the steam valve pocket, and the brokenly bubble chamber includes brokenly bubble rail cover and is arranged on the steam valve seat Brokenly bubble chamber side wall, the brokenly bubble rail cover is removably attachable on the brokenly bubble chamber side wall.

On the basis of the above, the utility model additionally provide be provided with a kind of electric cooker, the pot lid of the electric cooker it is above-mentioned Brokenly bubble steam valve.

In brokenly bubble steam valve of the present utility model, especially the brokenly bubble with brokenly bubble chamber is additionally arranged in its steam valve pocket Structure, carries out brokenly bubble by the way of rolling element is rolled along inclined-plane, and the utility model passes through to each parameter control in brokenly bubble structure System, can effectively adjust interior pot minute-pressure change.Known pot inner pressure, roller size, the isoparametric decision design scope in angle of inclination When, required roller weight can be calculated, is easy to selection, and in pot inner pressure, roller size, these three parameters of angle of inclination In the range of, in the case of from conventional roller material, the less rolling element of volume/area can be obtained, according to rolling element The brokenly bubble cavity volume of design is also smaller, the steam valve that can be minimized.

Other features and advantages of the utility model will be described in detail in subsequent embodiment part.

Brief description of the drawings

Constitute a part of accompanying drawing of the present utility model to be used for providing further understanding to of the present utility model, this practicality New schematic description and description is used to explain the utility model, does not constitute to improper restriction of the present utility model. In the accompanying drawings：

Fig. 1 is the exploded perspective figure of the brokenly bubble steam valve according to preferred embodiment of the present utility model；

Fig. 2 is the A-A sectional views of brokenly bubble steam valve after assembling shown in Fig. 1；

Fig. 3 is Fig. 2 C-C sectional views；

Fig. 4 is the force analysis schematic diagram of brokenly bubble steam valve of the present utility model；

Fig. 5 be Fig. 1 shown in brokenly bubble steam valve steam valve seat stereogram, wherein for clearly show that side wall guide groove and Upward limit rib etc. and eliminate rolling element etc.；

Fig. 6 is the steam valve base and rolling element and the explosive view of brokenly bubble rail cover in one of embodiment；

A-A sectional views of the Fig. 7 for the brokenly bubble steam valve in one of embodiment after assembling；It is additionally arranged compared to Fig. 2 Spacing gusset；

Fig. 8 is Fig. 7 C '-C ' sectional views；

A-A sectional views of the Fig. 9 for the brokenly bubble steam valve in one of embodiment after assembling, it is aobvious compared to Fig. 2 increases The diameter D of the minimum spacing H and rolling element between catch and brokenly bubble chamber roof (i.e. brokenly bubble rail cover) are shown；

Figure 10 is the E-E sectional views of brokenly bubble steam valve after assembling shown in Fig. 1；

Figure 11 is sectional view of the brokenly bubble steam valve along Fig. 1 line A-A, similar with Fig. 9, unlike, catch is from brokenly bubble chamber The top of roof is extended downwardly from；

Figure 12 be Figure 11 shown in brokenly bubble steam valve after assembling along Fig. 1 E-E lines sectional view；

Figure 13 is sectional view of the brokenly bubble steam valve along Fig. 1 line A-A, similar with Fig. 9, unlike, catch is from brokenly bubble chamber The top of side wall is crossed out；

Figure 14 be Figure 13 shown in brokenly bubble steam valve after assembling along Fig. 1 E-E lines sectional view；

Figure 15 is the stereogram of the rolling element in the brokenly bubble steam valve shown in Fig. 1, and the rolling element has guide pillar；

Figure 16 is the front view of the rolling element of another preferred constructive form, and the rolling element is with circular fin but does not have Guide pillar；

Figure 17 is the shaft section schematic diagram of the rolling element shown in Figure 16；

Figure 18 is an end view of the rolling element shown in Figure 16；And

Figure 19 is another end view of the rolling element shown in Figure 16.

Description of reference numerals：

The steam valve cap of 100 steam valve seat 200

The steam inlet of 300 sealing ring 101

The madial wall of bottom wall 103 of 102 steam valve seats

201 steam (vapor) outlets

The upward limit rib of 221 side wall guide groove 222

223 spacing gussets 224 install inclined-plane

The brokenly bubble chamber perisporium of 1 rolling element 2

3 roll the catch of gear structure 4

The surrounding layer of 11 inner nuclear layer 12

The annulus fin of 13 guide pillar 14

The 15 circumferential roll tilt walls of clamping breach 21

The brokenly bubble rail cover of 22 brokenly bubble chamber side wall 23

A1 width A2 length

B steam valve pocket B1 brokenly bubble chambers

D diameter H minimum spacings

Component is pushed away under F1 steam lifting force F2 gravity

G gravity L axial lengths

J1 lateral clearance J2 vertical gaps

A slanted angle f frictional force

Embodiment

Embodiment of the present utility model is described in detail below in conjunction with accompanying drawing.It should be appreciated that herein Described embodiment is merely to illustrate and explained the utility model, is not limited to the utility model.

It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the utility model can To be mutually combined.

Describe the utility model in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

In the utility model, in the case where not making opposite explanation, the noun of locality used is as logical such as " upper and lower, top, bottom " It is often that for direction shown in the drawings or on vertical, vertical or gravity direction each part is mutual Position relationship describes word.The noun of locality such as " inside and outside " is referred to inside and outside chamber." laterally, longitudinal direction " is commonly referred to as roll tilt Wall it is horizontal and vertical, the longitudinal direction of roll tilt wall is diagonally downward or upward incline direction.

The utility model provides a kind of brokenly bubble steam valve, as shown in Fig. 1 to Figure 14, the steam valve of the brokenly bubble steam valve Chamber B is provided with steam (vapor) outlet 201 and steam inlet 101, the steam valve pocket B of brokenly bubble steam valve and especially has additional brokenly bubble structure, should Brokenly bubble structure includes the brokenly bubble chamber B1 of rolling element 1 and both ends open, brokenly bubble chamber B1 bottom end opening (i.e. air inlet) connection steam Entrance 101, top end opening (i.e. gas outlet) connection steam valve pocket B, the rolling that brokenly bubble chamber B1 bottom wall is formed as tilting upward is inclined Skew wall 21, the rolling element 1 being built in brokenly bubble chamber B1 can be rolled in the Steam Actuation lower edge entered from steam inlet 101 to incline Skew wall 21 scrolls up or scrolled down through under self gravitation effect, i.e., rolling element 1 can be along reciprocal upper of roll tilt wall 21 Lower slider.

, can be in steam valve because moisture largely evaporates in the cooking process of the culinary art household electrical appliances such as electric cooker, electric pressure cooking saucepan Portion forms substantial amounts of bubble, so as to influence the mouthfeel of food.Enter steam when the steam in interior pot (or inner bag) carries soup During valve, internal brokenly bubble structure can by rotating, the mode such as vibration by bubble breaking, so as to promote the separation of steam and soup, The soup spill electric cooker in interior pot etc. is avoided to cook household electrical appliances.

As shown in Figure 1 and Figure 2, when electric cooker works, the steam of interior pot and big another typical material enter from steam inlet 101 Rolling element 1, when interior pot steam pressure is larger, can be pushed to brokenly bubble chamber B1 top by brokenly bubble steam valve.Now, steam and big Foam passes through the circular gap (the lateral clearance J1 and vertical gap J2 for including Fig. 3) between rolling element 1 and brokenly bubble chamber perisporium 2 Into in steam valve pocket B, finally outwards escaped via the steam (vapor) outlet 201 on steam valve cap 200.Through circular gap During, there is a constant pressure drop in vapor pressure so that interior pan gas pressure is slightly higher compared to external pressure, that is, there is minute-pressure, favorably In cooking rice.Meanwhile, macrofoam through circular gap and at least split into numerous another typical materials, another typical material volume it is larger and Ruptured in the steam valve pocket B that pressure reduces, form ponding and flowed back from the bottom wall 102 of steam valve seat, rolling element and brokenly bubble chamber perisporium Between the circular gap that is formed contribute to brokenly bubble, gap design more can effectively control the steam pressure of interior pot so that interior pot is kept In minute-pressure state, the mouthfeel for the rice made is more preferably.And in digestion process, as firepower control and moisture are gradually decreased, Interior pot steam pressure is simultaneously unstable, and rolling element 1 also will up and down reciprocatingly be rolled along the slide downward of roll tilt wall 21 in rolling element 1 Macrofoam is constantly extruded in dynamic process, the ponding formed directly flows back along roll tilt wall 21.Wherein, steam path See in each sectional view from steam inlet 101 to the curve of steam (vapor) outlet 201.

Referring to Fig. 4 force analysis, the gravity of rolling element 1 is G, gravity G straight down, the inclination of roll tilt wall 21 Angle is a, it is known that：Component F2=G*Sin (a) is pushed away under gravity, according to the stress balance along inclined plane, is derived on steam Thrust F1=F2+f, wherein f are the frictional force of inclined plane.When vapor action in the active area on rolling element 1 is S, rolling inclines Skew wall 21 and rolling element 1 are respectively provided with smooth surface, during make it that frictional force f can be neglected, and can derive brokenly bubble chamber B1 bottom Pressure difference P between vapor pressure and the vapor pressure at top should be met：

In other words, when the pressure difference P of only rolling element chamber pressure of both sides about 1 is sufficiently large, i.e. the interior pot of electric cooker Vapor pressure is present relative to extraneous standard pressure under certain minute-pressure state, can push up rolling element 1, with keep compared with Good effect of breaking bubble.

In the embodiment shown in Fig. 3, rolling element 1 is the roller of cylinder, and the roller is along roll tilt wall 21 Lateral arrangement, a diameter of D of roller, axial length is L, then vapor action is in the active area S=D*L on rolling element 1； And

Brokenly bubble chamber B1 has rectangular cross section, and the width of the rectangular cross section is A1, and length is A2, then between circumference The cross-sectional area S1=A1*A2-D*L of gap.

Certainly it is only for example herein, i.e., brokenly bubble chamber is not limited to rectangle chamber, and rolling element 1 is also not necessarily limited to roller, other Under shape, active area S computing formula also can be equally obtained.

By above force analysis and calculating, P size depends on the gravity, lifting surface area, inclination of rolling element 1 The multiple parameters such as angle a.Meanwhile, P size is also limited by brokenly bubble chamber size size.In other words, by selecting to control above-mentioned ginseng Number, then be adjustably controlled interior pot steam pressure, to obtain the steam pressure of optimum boiling meal.

Similarly, to realize the miniaturization of brokenly bubble steam valve, the gravity G of the rolling element 1 is met：

Wherein, the pressure difference between P is brokenly bubble chamber B1 the vapor pressure of bottom and the vapor pressure at top, and value Range preferably from 50~300pa；S be the vapor action in the active area on the rolling element 1, and span is preferred For 90~180mm², a is the slanted angle of the roll tilt wall 21 with respect to the horizontal plane, and span be preferably 5 °~ 30°。

So, pressure difference P (i.e. pot inner pressure), roller size, the isoparametric decision design models of angle of inclination a are being provided When enclosing, required roller weight can be calculated, in order to selection, compact conformation, miniaturization and applicable brokenly bubble steam is realized Valve.

Drawn according to continuous experimental summary, when pressure difference P is preferably 50pa~300pa, presence in pot can be realized Micro-pressure, rolling element 1 can move up and realize effect of breaking bubble at this pressure again, while thin rice gruel easily backflow again.

In a particular embodiment, it is highly preferred that P scope is 100pa~200pa.If pressure difference P=100Pa, track A=18 ° of slanted angle, S=120mm², then gravity G ≈ 3.96g, the round numbers 4g of roller can be calculated, by density formula ρ =m/V=9.8N/kg, can calculate the density of roller, and then consider selection.

In addition, brokenly bubble chamber is relatively small so that when circular gap is sufficiently small, internal pressure can be lifted, steam valve pocket B should be compared It is sufficiently large in brokenly bubble chamber B1, be conducive to maintaining the pressure drop of circular gap, another typical material of being more convenient for all ruptures wherein.As showing Example, in the illustrated embodiment, steam valve pocket B and brokenly bubble chamber B1 volume ratio are preferably not less than 5, are also not necessarily limited to certainly This.

When vapor action is when the active area S on rolling element 1 is preferably 90~180 square millimeters, the weight of rolling element 1 Power G is preferably 2~8 grams.Further, the cross-sectional area S1 of circular gap is preferably 50~100 square millimeters.Citing comes Say, if the diameter D=12mm of roller, axial length L=10mm, gravity G=4g, during a=18 ° of slanted angle, then P=F1/S ≈100.9455pa.Now, according to above-mentioned rational parameter area, differential pressure requirements can be met, can make brokenly bubble steam valve real again Now minimize, effectively destroy macrofoam and contribute to thin rice gruel to flow back.

To realize above-mentioned circular gap, referring to Fig. 3, it can also be formed on the periphery wall of roller (its stereogram is referring to Fig. 6) There are the roof guide groove and bottom wall that are respectively formed with shown in Fig. 3 on annulus fin 14, brokenly bubble chamber B1 roof and bottom wall to lead Groove, roller along roll tilt wall 21 roll when, to be oriented to slip in the insertion roof guide groove of annulus fin 14 and bottom wall guide groove；Its In, lateral clearance J1 is each formed between the outer peripheral face of roller and brokenly bubble chamber B1 top wall surface and wall surface, so that relative to rolling The whole periphery wall of post reduces frictional force with that for brokenly bubble chamber B1 wall surface Full connected, can reduce friction area.

To form lateral clearance J1, naturally it is contemplated that the height of projection of annulus fin 14 is set greater than into roof guide groove Or the depth of bottom wall guide groove, so as to form lateral clearance J1.But now only pass through annulus fin between roller and brokenly bubble bottom of chamber wall During 14 contact, easily operation is unstable.In order to further increase stationarity during roller operation, as shown in figure 3, bottom wall guide groove Both sides are respectively formed with projected side wall protruding upward, and the periphery wall of roller is supported on two projected side walls, so as to be lifted Stationarity when roller is run.After two projected side walls are set, it further can also make the height of projection of annulus fin 14 small In the depth of bottom wall guide groove, that is, avoid annulus fin 14 from contacting the bottom surface of bottom wall guide groove, further reduce contact area.

Referring also to Fig. 8 and Figure 15, the circumferential two ends of roller can also be extended with guide pillar 13, brokenly bubble chamber B1 both sides respectively Brokenly bubble chamber side wall 22 is respectively formed with the side wall guide groove 221 parallel with roll tilt wall 21, and referring to Fig. 5, Fig. 6, guide pillar 13 is stretched into With guiding movement rolling element 1 in side wall guide groove 221；Wherein, circular gap also includes vertical gap J2, the depth of side wall guide groove 221 Extension elongation of the degree less than guide pillar 13 so that be formed between the end face of roller and brokenly bubble chamber B1 brokenly bubble chamber side wall 22 vertical Gap J2.Above-mentioned annulus fin 14 and guide pillar 13 and its corresponding guide groove design not only contribute to the past up and down of rolling element 1 It is multiple to slide, reduce power-assisted and be oriented to accurately, moreover it is possible to rolling element 1 is followed same track all the time mobile and not skewed so that between circumference The size of gap remains stable, and the pressure difference P's of above-mentioned derivation is with a high credibility.

Because rolling element 1 is extended with guide pillar 13, while brokenly bubble chamber side wall 22 is formed with the side parallel with roll tilt wall 21 Wall guide groove 221, so can guiding movement rolling element 1, the cooperation for passing through guide pillar and guide groove improves the operation stability of rolling element 1.

Specifically, the width of side wall guide groove 221 should be greater than the diameter of guide pillar 13 so that guide pillar 13 and side wall guide groove 221 it Between formed gap coordinate.Preferably, the depth of side wall guide groove 221 also should be less than the extension elongation of guide pillar 13 so that rolling element 1 Gap is formed between brokenly bubble chamber side wall 22.So, coordinated by the gap between guide pillar, guide groove, and rolling element and side Gap between wall coordinates, and does not influence moving back and forth for rolling element.

In Fig. 5, Fig. 6, side wall guide groove 221 caves inward to be formed from the surface of brokenly bubble chamber side wall 22.But selectively, Brokenly bubble chamber side wall 22 can be made to be protruding with parallel interval and the guide groove top board and guide groove base plate dip-parallel with roll tilt wall 21 (not shown), side wall guide groove 221 is formed between guide groove top board and guide groove base plate.In Fig. 5, Fig. 6, side wall guide groove 221 is preferably Brokenly bubble chamber B1 bottom end opening is not extended downward into, i.e., with base end wall, the base end wall is constituted to guide pillar 13 to lower limit Position, gear structure 3 is rolled with the display such as Fig. 2, Fig. 7, Fig. 9 as formed by being extended downwardly and inwardly steam valve madial wall 103 Function it is similar, by the body to rolling element 1 or guide pillar 13 to lower limit, can stop that rolling element 1 skids off brokenly bubble chamber B1 Bottom end opening.Guide pillar 13 to upper limit similarly, will also address below.But, pass through guide groove top board and the guide groove bottom of protrusion When plate shape is into side wall guide groove 221, then need especially to set up the position limiting structure of guide pillar 13 at guide groove two ends.

In the embodiment that all accompanying drawings are shown, rolling element 1 is both preferably the roller of cylinder, but rolling element 1 also may be used Be others such as the ball of spheroidal.During as ball, guide pillar 13 can extending radially out along ball.During as roller, Two cylindrical guide pillars 13 can respectively stretch out along the axle center two ends of roller, and be respectively protruding into the brokenly bubble chamber of brokenly bubble chamber B1 both sides In the side wall guide groove 221 of side wall 22.

Stretched in addition, being respectively formed with the brokenly bubble chamber side wall 22 of brokenly bubble chamber B1 both sides towards the corresponding axial end of roller The spacing gusset 223 gone out, as shown in Figure 7, Figure 8.When the width of side wall guide groove 221 is larger and diameter of roller 13 is relatively small When, rolling element 1 easily produces deflection, and now spacing gusset 223 is limited the two ends axial end of rolling element body respectively Position, can effectively limit inclination and offset degree of the rolling element 1 relative to its center axis.Specific in present embodiment, rolling element 1 1mm~4mm gap is formed between brokenly bubble chamber side wall 22, now the spacing of spacing gusset 223 and rolling element 1 is preferably 0.5mm~1mm.When the gap between rolling element 1 and brokenly bubble chamber side wall 22 is larger, set and smaller spacing of roller spacing Gusset 223 can effectively prevent that roller from deviating from the phenomenon of groove in rolling process due to unbalance stress generation sideslip.In addition As shown in Figure 7, Figure 8, spacing gusset 223 is preferably located in the brokenly bubble chamber side wall 22 substantially maintained an equal level with the highest face height of roller On, so that in the case of guarantee roller not sideslip, less can be rubbed in the motion process of rolling element 1 with rolling element, with The motion of blocking-proof rolling element 1.

Similar with to lower limit to realize to guide pillar 13 to upper limit, the top of side wall guide groove 221 is formed with upwards Limit rib 222, as shown in Figure 5.Side wall guide groove 221 as shown in Figure 6, Figure 7, can not extend upwardly to brokenly bubble chamber B1 top End opening, i.e., with top end wall, the top end wall is used for upper limit, and the top end wall is used as upward limit rib 222.

But different in Figure 5, side wall guide groove 221 extends upwardly to the top end opening through brokenly bubble chamber B1, with It is easy to rolling element 1 to be embedded in from top end opening in brokenly bubble chamber B1 downwards, with ease of assembly.Therefore in Figure 5, upward limit rib 222 In the top groove for being protrusively formed at side wall guide groove 221.Now, usual brokenly bubble chamber side wall has plastic material to be made, in external force It can be deformed upon under effect, guide pillar 13 can cross upward limit rib 222 by extruding when mounted and slip into side wall guide groove 221.

Referring to Fig. 5, the front end face towards steam valve pocket B of upward limit rib 222 is also preferably formed with installation inclined-plane 224, the installation inclined-plane 224 is tilted from brokenly bubble chamber B1 top end opening towards bottom end opening so that rolling element 1 is from brokenly bubble chamber B1 Top end opening insertion when being installed on brokenly bubble chamber B1, guide pillar 13 can be along installing inclined-plane 224 downward across upward limit rib 222 And slip into side wall guide groove 221.The setting for installing inclined-plane 224 has been further facilitated in the insertion side wall guide groove 221 of guide pillar 13.

In addition, brokenly bubble chamber B1 roof can be fixed covering plate, but it may also preferably be brokenly bubble rail cover 23, the brokenly bubble Rail cover 23 is removably attachable to the madial wall 103 of brokenly bubble steam valve, and for example being carried out by respective known pivot structure can It is pivotally mounted, it is not described in detail herein.Brokenly bubble rail cover 23 it is pivotally-mounted, after the assembling and use that facilitate rolling element 1 Cleaning.Specifically, also it can be set from side wall guide groove 221 towards brokenly bubble rail cover 23 on brokenly bubble chamber B1 brokenly bubble chamber side wall 22 The guide pillar mounting groove (not shown) extended downwardly.When rolling element 1 is assembled, brokenly bubble rail cover 23, the two ends of rolling element 1 are pivotally opened Guide pillar 13 alignment guide pillar mounting groove, then press down on, guide pillar 13 can be slipped into along guide pillar mounting groove in side wall guide groove 221. Similarly, rolling element 1 can reversely be taken out after use, brokenly bubble chamber B1 is cleaned.

Above describe to the spacing up and down of guide pillar 13.Similarly, rational bound should also be carried out to rolling element body Position, especially when without guide pillar 13 or when guide pillar 13 produces damage, passes through the rational bound to rolling element body Position, it is possible to provide double shield, improves the use reliability of steam valve, it is to avoid rolling element is skidded off.

During to rolling element body to lower limit, shown in each embodiment shown in Fig. 2, Fig. 7, Fig. 9, Figure 11, Figure 13 Gear structure 3 is rolled formed by the bottom end opening for stretch into brokenly bubble chamber B1 as steam valve madial wall 103, being kept off by the rolling Bit architecture 3, can effectively stop that rolling element 1 skids off brokenly bubble chamber B1 bottom end opening, while not influenceing steam to enter brokenly bubble chamber B1.

Fig. 9 to Figure 14 illustrates the catch 4 and its mounting structure of three kinds of forms, to realize to the upward of rolling element body It is spacing.Catch 4 therein is arranged in steam valve pocket B, and the top end opening close to brokenly bubble chamber B1 is set, with stop rolling element 1 to On skid off brokenly bubble chamber B1.

In Fig. 9 and Figure 10 the first embodiment, catch 4 preferably directly (steams from steam valve pocket B bottom wall The bottom wall 102 of steam valve seat) protrude upward, this structure makes steam between the top of catch 4 and brokenly bubble chamber B1 roof Gap is flowed up, and is easy to the steam (vapor) outlet 201 of steam upward to flow.

Wherein, catch 4 can be variously-shaped elongated rib strip shaped or the width side along roll tilt wall 21 To the flat board of arrangement.When certainly, using elongated rib strip shaped, the hydrops such as thin rice gruel being more beneficial on the bottom wall 102 of steam valve seat is returned Stream.And use writing board shape, then it can more reliably stop that rolling element body is skidded off.

No matter rolling element 1 is the roller of cylinder or the ball of spheroidal, the top of catch 4 and brokenly bubble rail cover 23 it Between minimum spacing H should be less than the diameter D of rolling element 1.In other words, catch 4 should have certain altitude and with brokenly bubble rail cover 23 Spacing can not be excessive so that rolling element 1 can not be skidded off from the top of catch 4, it is ensured that the sliding rail of rolling element 1 is normal, will not De-orbit, as shown in Figure 9.

As it was previously stated, but the bottom of brokenly bubble rail cover 23 is removably connected pivotally to the madial wall of brokenly bubble steam valve 103 or the side wall of brokenly bubble chamber is removably attachable to, when cleaning after assembling or use, is both needed to pull upwards and open brokenly bubble Rail cover 23.Therefore, the size of the minimum spacing H between the top of catch 4 and brokenly bubble rail cover 23 should be suitable to finger insertion, That is minimum spacing H should be greater than finger thickness.In the present embodiment, minimum spacing H is not less than 8mm, i.e., more than the overwhelming majority The finger tip thickness of finger so that finger fingertip can be embedded in minimum spacing H gap, brokenly bubble chamber is opened to move upwards The roof (i.e. brokenly bubble rail cover 23) of perisporium 2.If the bottom pivotable connection of brokenly bubble rail cover 23 is in the inner side of brokenly bubble steam valve Wall 103.

Certainly, the minimum spacing H between catch 4 and brokenly bubble chamber B1 brokenly bubble chamber side wall 22 also should be less than the straight of rolling element 1 Footpath D, so that rolling element can not be skidded off from the both lateral sides of catch 4.In other words, if catch 4 is the flat board extended laterally When, catch 4 need to be limited with one fixed width.If catch 4 be elongated rib, can along roll tilt wall 21 lateral separation cloth Put multiple.

In addition, Fig. 9, the brokenly bubble steam valve shown in 10 include steam valve cap 200 and steam valve seat 100, the steaming mutually fastened Steam valve pocket B is formed between steam valve lid 200 and steam valve seat 100, steam (vapor) outlet 201 is formed on steam valve cap 200, steam Entrance 101 is formed on the bottom wall 102 of steam valve seat.It is tight for the fastening between increase steam valve cap 200 and steam valve seat 100 Density, prevents that steam from escaping from the jointing edge of the two, sealing ring is additionally provided between steam valve cap 200 and steam valve seat 100 300.Now, when catch 4 is directly protruded upward from the bottom wall 102 of steam valve seat, the bottom of catch 4 preferably with steam valve seat Wall 102 is integrally formed, and makes manufacture more convenient.Certainly, the attachment structure of catch 4 is also not necessarily limited to the integrated formed structures such as casting, Can also be the other manners such as ultrasonic wave fusion weld.

When brokenly bubble steam valve is fastened by steam valve cap 200 and steam valve seat 100 to be formed, the bottom of brokenly bubble rail cover 23 Preferably pivotable connection, and roll tilt wall 21 is preferably the downward-sloping part of steam valve pocket B bottom wall, rolling is inclined Skew wall 21 extends to steam inlet 101, the hydrops of steam valve pocket B bottom wall (including condensed water and foam burst the thin rice gruel to be formed Etc.) swimmingly can be flowed out in time downwards from steam inlet 101 via roll tilt wall 21.

In addition, at brokenly bubble chamber B1 top end opening, catch 4 also can stretch out to stop rolling element 1 from brokenly bubble chamber perisporium 2 Skid off brokenly bubble chamber B1.So, the form of catch 4 protruded upward from the bottom wall 102 of steam valve seat compared to Fig. 9, is more beneficial for The hydrops backflow on the surface of bottom wall 102 of steam valve seat.

Similarly, catch 4 elongated rib or the width along roll tilt wall 21 can be arranged as described above Flat board.

In Figure 11 and Figure 12 second of embodiment, catch 4 inclines from the top of brokenly bubble chamber B1 roof towards rolling Skew wall 21 is extended downwardly from.So catch 4 has spacing in suspension shape between catch and brokenly bubble bottom of chamber wall, and such catch will not be hampered Thin rice gruel is hindered to be flowed back from the bottom wall of brokenly bubble chamber.

Similarly, effectively to stop that rolling element body skids off brokenly bubble chamber B1 upwards, no matter rolling element 1 is cylindrical rolling The ball of post or spheroidal, the minimum spacing H between the bottom of catch 4 and roll tilt wall 21 should be less than the straight of rolling element 1 Footpath D, such rolling element 1 skids off lower section that can not be substantially from catch 4.

It is identical with the embodiment shown in Fig. 9, Figure 10, the brokenly bubble chamber side of the catch 4 and brokenly bubble chamber B1 in Figure 11, Figure 12 Minimum spacing H between wall 22 also should be less than the diameter D of rolling element 1.The width of catch 4 is limited, to cause rolling element body It can not be skidded off from the side of catch 4.

In Figure 13 and Figure 14 the third embodiment, catch 4 is laterally stretched from brokenly bubble chamber B1 brokenly bubble chamber side wall 22 Go out.

In Figure 13, Tu14Zhong, the catch 4 crossed out from brokenly bubble chamber side wall 22 is preferably also in suspension shape, this catch Thin rice gruel will not be equally hindered to be flowed back from the bottom wall of brokenly bubble chamber.

Catch 4 in figure is preferably in T shape, it may include longitudinal extension part and lateral extensions, and longitudinal extension part is from broken The top of bubble chamber side wall 22 extends forward, and lateral extensions laterally inwardly extend from the end of longitudinal extension part.

It is further to note that catch 4 is mainly used in upper limit rolling element 1, under repeated stock, to avoid damaging The contact portion of wound, catch 4 and rolling element 1 preferably has buffering, the preferably periphery of elastic buffer, such as rolling element 1 Portion is formed with flexible material layer, to mitigate the impact power to catch 4, or catch 4 the flexible layer of shock surface etc..

No matter rolling element 1 is the roller of cylinder or the ball of spheroidal, or other any suitable rolling member shapes When, rolling element 1 preferably includes quality relatively large inner nuclear layer 11 and the relatively small surrounding layer 12 of quality, surrounding layer 12 For flexible material layer, referring to Figure 15 to Figure 19.So, the mass of inner nuclear layer 11 is big, is easy to roll brokenly bubble, surrounding layer 12 is flexibility Material, it is possible to decrease the noise produced during rolling, mitigates impact power when rolling element 1 is rolled, and equally also slows down itself abrasion.

Inner nuclear layer 11 is preferably the hard materials such as metal.Not only quality is big for metallic hard material, more wins big in density, body Product is small, and the miniaturization suitable for brokenly bubble steam valve needs.For example in each embodiment of the present utility model, inner nuclear layer 11 is preferred Ground is using stainless steel, stainless iron or aluminum of food-grade for being difficult to get rusty etc..

Surrounding layer 12 is preferably the glue-line easily to adhere to and being molded, such as layer of silica gel, rubber layer or other elastomeric materials Layer, the attachment degree of ectonexine is high, is difficult mutually stripping.

During using layer of silica gel or rubber layer, surrounding layer 12 can be formed at interior by modes such as injection moulding or compression moldings On the outer surface of stratum nucleare 11.Rolling elements 1 of the Figure 15 into Figure 19 is the roller of cylinder, by taking roller as an example, to complete injection Shaping or compression molding then make surrounding layer 12, it is necessary to carry out effective clamping to inner nuclear layer 11.

It is common to have such as scroll chuck for the clamping of cylinder.Now, as shown in Figure 15, Figure 19, the end of roller Be formed with circumferentially spaced three circumferential clamping breach 15, three circumferential insertion surrounding layers 12 of clamping breach 15 and to Outer exposed inner nuclear layer 11.The clamping face of wherein each claw extends to end face from the side face of rolling element 1.

In addition, routinely can also use centering mode clamping roller, so then the axle center two ends of roller be respectively formed with to A few axial clamping breach, axial clamping breach insertion surrounding layer 12 simultaneously outwards exposes inner nuclear layer 11.

The axle center two ends of roller shown in Figure 15 are extended with guide pillar 13 respectively, and the roller shown in Figure 16 to Figure 19 does not have Guide pillar 13, but with annulus fin 14.

But when being extended with guide pillar 13, brokenly bubble chamber B1 brokenly bubble chamber side wall 22 is formed with the side wall parallel with roll tilt wall 21 Guide groove 221, to reduce the abrasion of guide pillar and guide groove, guide pillar 13 is preferably formed in one with surrounding layer 12, i.e., guide pillar 13 is also complete Using flexible material.

Annulus fin 14 can be formed with outer peripheral face as the inner nuclear layer 11 of cylinder, is covered and justified by surrounding layer 12 Ring convex rib 14, the same friction for reducing annulus fin 14.Certainly, annulus fin 14 also can similar guide pillar 13, with surrounding layer 12 1 It is body formed, referring to Figure 17.

In addition, when brokenly bubble chamber B1 bottom end opening is provided with rolling gear structure 3 as described above, rolling element 1 inclines along rolling During 21 reciprocating rolling of skew wall, rolling element 1 rolls gear structure 3 by the contact-impact of surrounding layer 12.The setting of surrounding layer 12 can phase When the repeated stock for slowing down 1 pair of rolling gear structure 3 of rolling member in degree.Certainly, the surface of gear structure 3 is rolled to may also set up Cushion.

Preferred embodiment of the present utility model is the foregoing is only, it is all at this not to limit the utility model Within the spirit and principle of utility model, any modifications, equivalent substitutions and improvements made etc., such as guide pillar 13 also can be from rollings The only one end face of body 1 stretches out, and guide pillar 13 is also not necessarily limited to use flexible material completely, can have the inner prop of metal inner core with And the flexible material outer layer of extexine cladding, steam inlet 101 and brokenly bubble chamber B1 bottom end opening can unite two into one etc., all As such change should be included within protection domain of the present utility model.

It is further to note that each particular technique feature described in above-mentioned embodiment, in not lance In the case of shield, it can be combined by any suitable means, in order to avoid unnecessary repetition, the utility model pair Various possible combinations no longer separately illustrate.

In addition, can also be combined between a variety of embodiments of the present utility model, as long as it is not disobeyed Thought of the present utility model is carried on the back, it should equally be considered as content disclosed in the utility model.

Claims (12)

1. a kind of brokenly bubble steam valve, it is characterised in that brokenly bubble structure is provided with the steam valve pocket (B) of the brokenly bubble steam valve, described Brokenly bubble structure includes rolling element (1) and brokenly bubble chamber (B1), and the brokenly bubble chamber has air inlet and gas outlet, the brokenly bubble chamber (B1) Bottom wall be formed as the roll tilt wall (21) tilted upward, be built in the rolling element (1) energy in the brokenly bubble chamber (B1) It is enough to be scrolled up or in self gravitation effect in roll tilt wall (21) described in the Steam Actuation lower edge entered from the air inlet Under scroll down through, and meet：

Wherein, G is the gravity of the rolling element (1)；P is the vapor pressure and the steam at top of the bottom of the brokenly bubble chamber (B1) Pressure difference between air pressure, and P=50~300pa；S be the vapor action in the active area on the rolling element (1), and S=90~180mm², a is the slanted angle of the roll tilt wall (21) with respect to the horizontal plane, and a=5 °~30 °.

2. brokenly bubble steam valve according to claim 1, it is characterised in that the scope of the pressure difference P be 100pa~ 200pa。

3. brokenly bubble steam valve according to claim 1, it is characterised in that the roll tilt wall (21) and the rolling element (1) it is respectively provided with smooth surface.

4. brokenly bubble steam valve according to claim 1, it is characterised in that the steam valve pocket (B) and the brokenly bubble chamber (B1) volume ratio is not less than 5.

5. the brokenly bubble steam valve according to any one in Claims 1 to 4, it is characterised in that the rolling element (1) is with breaking Circular gap is formed between bubble chamber perisporium (2), the cross-sectional area S1 of the circular gap is 50~100 square millimeters.

6. the brokenly bubble steam valve according to any one in Claims 1 to 4, it is characterised in that the rolling element (1) is with breaking 0.5~4mm circular gap is formed between bubble chamber perisporium (2).

7. brokenly bubble steam valve according to claim 5, it is characterised in that the rolling element (1) is the roller of cylinder, should Lateral arrangement of the roller along the roll tilt wall (21), a diameter of D of the roller, axial length is L, the vapor action Active area S=D*L on the rolling element (1)；And

The brokenly bubble chamber (B1) has rectangular cross section, and the width of the rectangular cross section is A1, and length is A2, the circumference The cross-sectional area S1=A1*A2-D*L in gap.

8. brokenly bubble steam valve according to claim 7, it is characterised in that be formed with annulus on the periphery wall of the roller convex Roof guide groove and bottom wall guide groove, the rolling are respectively formed with rib (14), the roof and bottom wall of the brokenly bubble chamber (B1) Post along the roll tilt wall (21) roll when, to lead in the annulus fin (14) embedded the roof guide groove and bottom wall guide groove To slip；

Wherein, it is each formed with lateral clearance between the outer peripheral face of the roller and the top wall surface and wall surface of the brokenly bubble chamber (B1) (J1)。

9. brokenly bubble steam valve according to claim 8, it is characterised in that the both sides of the bottom wall guide groove be respectively formed with to The projected side wall protruded above, the periphery wall of the roller is supported on two projected side walls, and the annulus fin (14) height of projection is less than the depth of the bottom wall guide groove.

10. brokenly bubble steam valve according to claim 8, it is characterised in that the circumferential two ends of the rolling element are stretched out respectively There is guide pillar (13), the both sides brokenly bubble chamber side wall (22) of the brokenly bubble chamber (B1) is respectively formed with puts down with the roll tilt wall (21) Capable side wall guide groove (221), the guide pillar (13) is stretched into the side wall guide groove (221) with rolling element described in guiding movement (1)；

Wherein, the circular gap also includes vertical gap (J2), and the depth of the side wall guide groove (221) is less than the guide pillar (13) extension elongation so that formed between the end face of the roller and the brokenly bubble chamber side wall (22) of the brokenly bubble chamber (B1) State vertical gap (J2).

11. brokenly bubble steam valve according to claim 1, it is characterised in that the brokenly bubble steam valve includes steam valve cap (200) and steam valve seat (100), the steam valve cap (200) and the steam valve seat (100) are interconnected so as to form the steaming Steam valve chamber, the brokenly bubble chamber (B1) includes brokenly bubble rail cover (23) and the brokenly bubble chamber side being arranged on the steam valve seat (100) Wall (22), the brokenly bubble rail cover (23) is removably attachable on the brokenly bubble chamber side wall (22).

12. a kind of electric cooker, it is characterised in that the pot lid of the electric cooker is provided with according to any one in claim 1~11 Brokenly bubble steam valve described in.