CN101828863B - Inner container sealing device of electric steam box - Google Patents

Abstract

The invention provides an inner container sealing device of an electric steam box. An annular door seal which is made from flexible materials and corresponds to the closed annular surface of a gap is arranged on the closed annular surface gap matched between an inner container and a door body of the electric steam box; the cross section of the door seal is in a polygon shape; the door seal comprises a clamping groove and a protrusion part; the door seal polygon is tightly attached to the inner surface of a surface lining plate of the electric steam box; the clamping groove clamps the edge of the inner container; the protrusion part protrudes facing to the outer part of the inner container and slightly inclining to the center direction of the inner container; and when the door body is tightly closed, the outer side of the protrusion part is tightly attached to the inner surface of the door body. The embedded type electric steam box has good sealing stability between the door body and the inner container and high batch qualification rate; in addition, the door seal can play a better sealing role no matter the electric steam box is in a no-steam pressure state or a steam micro-pressure state.

Description

A kind of inner container sealing device of electric steam box

Technical field

The present invention relates to a kind of sealing device of steam box, the sealing device of especially electric steam box inner bag particularly, relates to the sealing device between a kind of Men Tiyu inner bag of embedded electric steam box.

Background technology

The electricity steam box is applied to various civilian and commercial occasions just more and more widely as a kind of kitchen appliance equipment.Those skilled in the art understand, the electricity steam box is a kind of minute-pressure product, so it is had relatively high expectations to sealing property between the Men Tiyu inner bag of electric steam box, if sealing property does not reach specification requirement, the dynamic balance of steam system of so electric steam box just can't operate as normal, thereby cause steam evenly to distribute, make food overdone or not yet done even half-cooked.

In the prior art, sealing device generally adopts the door body plane compression door envelope rubber strip that stretches to reach sealing effectiveness between the Men Tiyu inner bag heating system of electricity steam box, but the distortion in various degree that to a certain degree thermal deformation causes a body takes place because superheated steam pressure increases easily the door body plane of this structure heaves, make the closed anchor ring compactness variation that contacts between the Men Tiyu inner bag, and the door envelope of electric steam box product itself is just little with the plane contact area of door body, cause the sealing stability of an envelope undesirable, the batch qualification rate of product is not high.For example, Chinese patent application number has disclosed a kind of family electricity consumption steam box for CN200620154756.2 " a kind of household steamer ", it comprises shell, heater, is installed on the door on the shell, and inner cover, inner bag, control circuit are installed in the shell, and heater is positioned at the inner bottom part of shell; The edge of door is provided with sealing ring, and when closing to the doorstep, inner cover, inner bag, door surround a sealed space.What this patented technology scheme adopted is exactly to be common sealing ring, and it is arranged on the closed anchor ring between door and inner cover, the inner bag, realizes the sealing effectiveness of electric steam box.

Summary of the invention

The problem to be solved in the present invention is: the problem that exists at above-mentioned prior art provides a kind of sealing device that seals reliable and practical electric steam box inner bag heating system, and this inner bag heating system sealing device has solved Men Tiyu inner bag heating system well and seal stable undesirable problem when steam pressure increases.

The technical solution adopted in the present invention is: a kind of inner container sealing device of electric steam box is provided, its closed anchor ring gap location that cooperates between the door body of the inner bag of electric steam box and electric steam box is provided with a corresponding annular door envelope of the closed anchor ring with described gap that made by flexible material, the cross section of described door envelope is a polygon, described door package is drawn together one and is clamped draw-in groove and a protuberance, described door envelope polygon is close to the inner surface of the face liner plate of electric steam box, described clamping draw-in groove clamps the edge of described inner bag, described protuberance is towards the outside of described inner bag and slightly to be partial to the direction at described inner bag center outstanding, when described door body was fastened, the inner surface of described door body was close in the outside of described protuberance.

Further, described door body inner surface its with described protuberance outside the subsides that fit touch the position to external bending of door and rounding off.Like this, described protuberance can be more closely contact with described door body inner surface, and steam is an oblique body of pressing to the pressure of protuberance, makes that the sealing effectiveness of door envelope is better.

The polygonal center of described door envelope is provided with a cavity, because the existence of air in the cavity makes door be enclosed in when receiving extruding, the elastic deformation effect is even more ideal.

Preferably, described clamping draw-in groove is approximate U-shaped, and described inner bag edge outwards is bent into an outer flanging, and described clamping draw-in groove clamps described outer flanging, clamps the outer flanging of inner bag edge by the clamping draw-in groove that is similar to U-shaped, make sealing effectiveness better.

Described door envelope also is provided with the pawl of being close to mutually with the inner surface of described liner plate, and described door envelope also is provided with the pawl near described inner bag outer surface.The existence of described pawl makes can not influence sealing effectiveness because slip takes place between the inner surface of described door envelope and face liner plate or the inner bag outer surface.

Described door is enclosed in the emulsion sheet that also is provided with lip with the contact site, corner of described liner plate, and described lip emulsion sheet can play certain sealing function equally

The described subsides that are positioned at of the inner surface of described door body are touched the position and are the arc shape that protrudes to described inner bag direction with part, and preferably, the described subsides that are positioned at of described door body inner surface are touched the position and are the spherical shape that protrudes to described inner bag direction with part.When steam box was worked, steam rear portion in the inner bag assembly chamber blew out, and changed direction through the ball-type cambered surface reflection back of door body, produced the lateral pressure on opposite house envelope inclined-plane, added the interior minute-pressure of upper cavity, and an envelope is overlayed on door body inclined-plane, made sealing more reliable.The sphere feature of door body also has better thermal deformation resistant stability.

Compared with prior art, the invention has the advantages that: the sealing good stability between the Men Tiyu inner bag heating system of the embedded electric steam box that is provided, product batches qualification rate height.Be in no steam pressure state following time in electric steam box, the door envelope makes an envelope open and can contact with door body inclined-plane to door body bevel direction because of the tension force of protuberance, thereby plays sealing function; Be in steam minute-pressure state following time in electric steam box, the protuberance of door envelope is close to door body inclined-plane because of the steam pressure to the door body makes an envelope, thereby plays sealing function better.

Description of drawings

Fig. 1 shows after the inner bag of steam box seals sealing with the door body by door, the overall cutaway view of sealing device provided by the invention.

Fig. 2 is the detailed section view of the sealing device of steam box shown in Figure 1.

Fig. 3 is the door body front schematic view of steam box shown in Figure 1.

Fig. 4 is the explosive view of the sealing device of steam box shown in Figure 1.

The specific embodiment

Embodiment describes in further detail the present invention below in conjunction with accompanying drawing.

Embodiment: as Fig. 1, Fig. 2, Fig. 3, shown in Figure 4, steam box in the present embodiment is a kind of Embedded electric steam box, it is by the seal closure ofdoor envelope 2 realization inner bags 4 withdoor body 1, and described inner bag 4 is the cryptomere parts of a single face opening substantially, and describeddoor body 1 is a plate-shaped member substantially.There is a gap that is closed anchor ring the cooperation place between thedoor body 1 of the inner bag 4 of electric steam box and electric steam box, be provided with anenvelope 2 at described gap location, describeddoor envelope 2 is the correspondingannular door envelopes 2 of a closed anchor ring with described gap that made by flexible material, like this when describeddoor body 1 is in closed condition, describeddoor envelope 2 is close to abody 1 and inner bag 4 and is contacted, thereby plays sealing function.Describeddoor envelope 2 is made by flexible material, is for example made by elastic caoutchouc.

As shown in Figure 2, the cross section of describeddoor envelope 2 is an irregular polygon, and observing at described polygonal center from the angle of cross section has acavity 21, and describedcavity 21 is preferably circular.It will be appreciated by those skilled in the art that promptly has one to be the cavity of annular on the whole at the center of describeddoor envelope 2, makes describeddoor envelope 2 can shrink to the center when receiving extruding, thereby makes describeddoor envelope 2 have better elasticity.Still observe from the angle of cross section, describeddoor envelope 2 is provided withouter flanging 41 corresponding clamping draw-in grooves 6 that are bent into described inner bag 4 edges, described clamping draw-in groove 6 preferably is similar to U-shaped, realize sealing by clamping describedouter flanging 41, and be arranged on describeddoor envelope 2 and touch the protuberance 5 atposition 11 with the subsides ofdoor body 1.

Described clamping draw-in groove 6 and protuberance 5 also are annular on the whole, and (as shown in the figure) of all outside 90 degree bendings in the edge of preferably described inner bag 4, described U-shaped draw-in groove can better block the folding edge of described inner bag 4, promptly outer flanging 41.The edge of certain described inner bag 4 also can bend with other angles, perhaps also can not bend, as long as described clamping draw-in groove 6 is arranged on and corresponding position, the edge of described inner bag 4.In order to strengthen the degree that tightens up at describeddoor envelope 2 and described inner bag 4 edges further, thepawls 10 that describeddoor envelope 2 also is provided with near described inner bag 4 outer surfaces, with prevent describeddoor envelope 2 when being subjected to steam pressure and the outside face of described inner bag 4 slide.

The projection 9 that described protuberance 5 is tentaculiforms, described protuberance 5 is towards the outside of described inner bag and slightly to be partial to the direction at described inner bag 4 centers outstanding, and when describeddoor body 1 was fastened, the inner surface of describeddoor body 1 was close in the outside of described protuberance 5.Under the state of no steam pressure, the elasticity tension by described protuberance 5 makes describeddoor envelope 2 open to the direction of describeddoor body 1, and describeddoor envelope 2 can tentatively contact with the inner surface of describedbody 1; Be under the heated condition when described steam box is worked, described inner bag 4 adds superheated steams, forms the pressure to the protuberance 5 of describeddoor envelope 2, makes describedenvelope 2 be close to describeddoor body 1 more.Further, because air inflow is greater than capacity in the chamber of described inner bag 4, make to produce minute-pressure in the chamber again, increased the thrust of describeddoor envelope 2 anddoor body 1, strengthen the sealing effectiveness between describeddoor body 1 and the described inner bag 4 preferably, promptly strengthened sealing effectiveness between the inner bag heating system.

The subsides that describeddoor body 1 inner surface fits in itself and described protuberance 5 outsides are touched 11 places, position to external bending of door and rounding off.Further, the described subsides that are positioned at of describeddoor body 1 inner surface are touchedposition 11 and are the arc shape that protrudes to described inner bag direction with part, and preferably are spherical shape.The sphere feature of describeddoor body 1 can make describeddoor body 1 have better thermal deformation resistant stability, after steam box works long hours, tangible deformation can not take place.And after described inner bag 4 added superheated steam, described vapours changed the lateral pressure that direction forms oppositehouse envelope 2 after the ball-type cambered surface blocking reflected of thebody 1 of moving into one's husband's household upon marriage, and made a protuberance 5 ofenvelope 2 be close to a body inclined-plane more.

As shown in the figure, embedded electric steam box also often comprises theface liner plate 3 that is fixed on the inner bag 4, the present invention is in order to increase the reliability of sealing device, also be provided with several pawls 8 of being close to mutually with the inner surface of describedliner plate 3 in describeddoor envelope 2, for example two, with prevent describeddoor envelope 2 when being subjected to steam pressure and the inner surface of describedliner plate 3 slide.

Describeddoor envelope 2 projectioies 9 that also are provided with near described liner plateinner surface 3, preferably, described protruding 9 along the inner surface of describeddoor envelope 2 installation directions near describedliner plate 3, thereby can withstand the inner end (as shown in the figure) of describedliner plate 3 inner surfaces, to strengthen the sealing property of described sealing device.

Describeddoor envelope 2 and the contact site of thecorner 31 of describedliner plate 3emulsion sheet 7 that also is provided with lip prevent that steam from spilling, and strengthened the sealing property of described sealing device equally further between describeddoor envelope 2 and describedliner plate 3.

The process that described doorenvelope 2 is installed in the gap location that described inner bag 4 cooperates withdoor body 1 is as follows: at first the projection 9 of describeddoor envelope 2 vertically is pressed in the space between described inner bag 4 and described theliner plate 3 up to sealing 2pawl 8,10 with described and all is pressed in the described space, clamping draw-in groove 6 with describeddoor envelope 2 is stuck on the flanging at described inner bag 4 edges again, and theemulsion sheet 7 of describeddoor envelope 2 is covered in the corner of described liner plate, atlast door body 1 is closed so that the protuberance 5 of describeddoor envelope 2 is close on the inner surface of describeddoor body 1.

Claims (10)

1. inner container sealing device of electric steam box, the closed anchor ring gap location that cooperates between the door body (1) of the inner bag (4) of electric steam box and electric steam box is provided with a corresponding annular door of the closed anchor ring with described gap that made by flexible material and seals (2), it is characterized in that: the cross section of described door envelope (2) is a polygon, described door envelope (2) comprises that one clamps a draw-in groove (6) and a protuberance (5), described door envelope (2) polygon is close to the inner surface of the face liner plate (3) of electric steam box, described clamping draw-in groove (6) clamps the edge of described inner bag (4), described protuberance (5) is towards the outside of described inner bag and slightly to be partial to the direction at described inner bag (4) center outstanding, when described door body (1) when fastening, the inner surface of described door body (1) is close in the outside of described protuberance (5).

2. sealing device according to claim 1 is characterized in that: described door body (1) inner surface its with described protuberance (5) outside the subsides that fit touch position (11) and locate to external bending of door and rounding off.

3. sealing device according to claim 1 and 2 is characterized in that: described door envelope (2) polygonal center is provided with a cavity (21).

4. sealing device according to claim 1 and 2 is characterized in that: described clamping draw-in groove (6) is to be similar to U-shaped.

5. sealing device according to claim 1 and 2 is characterized in that: described inner bag (4) edge outwards is bent into an outer flanging (41), and described clamping draw-in groove (6) clamps described outer flanging (41).

6. sealing device according to claim 1 and 2 is characterized in that: described door envelope (2) also is provided with the pawl of being close to mutually with the inner surface of described liner plate (3) (8).

7. sealing device according to claim 1 and 2 is characterized in that: described door envelope (2) also is provided with the pawl (10) near described inner bag (4) outer surface.

8. sealing device according to claim 1 and 2 is characterized in that: described door envelope (2) also is provided with the emulsion sheet (7) of lip in the contact site, corner (31) with described liner plate (3).

9. according to claim 1 or 2 described sealing devices, it is characterized in that: the described subsides that are positioned at of described door body (1) inner surface are touched position (11) and are the arc shape that protrudes to described inner bag direction with part.

10. according to the described sealing device of claim 9, it is characterized in that: the described subsides that are positioned at of described door body (1) inner surface are touched position (11) and are the spherical shape that protrudes to described inner bag direction with part.

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