CN102261470B - Sealing system and there are the household electrical appliance of this sealing system - Google Patents

Abstract

The present invention is about a kind of sealing system and the household electrical appliance with sealing system.Sealing system comprises first component (16,17); Second component (11); And in order to make described first component (16,17) (11) form the potted component (18) of sealing and between described second component, described first component (16,17) has the groove (30) at least partially holding described potted component (18).According to suggestion of the present invention, described groove (30) and described potted component (18) have the upper diminishing shape of direction of insertion (C) in described potted component (18) respectively, and the head (60) of described potted component (18) is less than the opening (61) of described groove (30).

Description

Sealing system and there are the household electrical appliance of this sealing system

[technical field]

The present invention such as, about a kind of sealing system and the household electrical appliance with this sealing system, refrigerating appliance.

[background technology]

Sealing system is widely used in household electrical appliance such as refrigerating appliance.Such as the refrigerating appliance with the storeroom (being also referred to as " low-pressure chamber " or " vacuum chamber ") that can find time, in order to make storeroom prevent extraneous gas from entering storeroom after being evacuated, storeroom must have very high sealing.

In the refrigerating appliance of the storeroom (low-pressure chamber) can found time having disclosed in No. CN101358797A, Chinese patent application, there is low-pressure chamber main body that food picks and places mouth and be configured to possess: the metal plate-shaped member forming the box like resin-made outline picking and placeing mouth, glass plate that tempered glass is made and extend along multiple internal faces of resin-made outline.Glass plate is placed in the upper shed of resin-made outline hermetically by ringed liner, wherein ringed liner be with stacked coated glass sheets respectively obtain edge part obtain above, side and mode below have the structure of top, sidepiece and bottom, glass plate embeds in the groove that formed by top, sidepiece and bottom, and is kept by the elastic force of liner.Form the opening portion with end difference on the top of resin-made outline, ringed liner is placed on this end difference, by the deadweight of glass plate and the sealing being used for making gasket deformation and then ensure between glass plate and opening portion of low-pressure chamber external and internal pressure difference.This sealing system has requirement for the position of glass plate and opening portion, and be arranged on the sidepiece of low-pressure chamber or the situation of bottom for opening portion, it just can not work well.

US4,923,260 disclose a kind of sealing system on refrigerator shelf.Between the framework that sealing system is used for shelf and glass plate, comprise the framework with U-shaped accepting groove, the edge of glass plate is inserted in the accepting groove of framework after being inserted into the potted component with U-type groove again.This sealing system is applicable to the sealing had between different relative position two parts.For this sealing system, potted component needs to possess certain elasticity and also and between accepting groove forms interference fit, and this causes being difficult to potted component entirely to embed in accepting groove.

[summary of the invention]

The object of the present invention is to provide a kind of sealing system of improvement and there are the household electrical appliance of this sealing system.

Therefore, an aspect of of the present present invention, about a kind of sealing system, comprising: first component; Second component; And in order to make the potted component forming sealing between described first component and described second component, described first component has the groove at least partially holding described potted component; It is characterized in that, described groove and described potted component have diminishing shape in the direction of insertion of described potted component respectively, and the head of described potted component is less than the opening of described groove.

Thus, potted component aligning and insertion groove are become and is more prone to, thus be beneficial to the assembling of potted component.In addition, for the groove by injection mo(u)lding, the shape that opening is large, bottom is little is also particularly conducive to the withdrawing pattern step in its forming process.By the suitable configurations to potted component and groove, along with going deep into gradually of potted component, sealing effectiveness more reliably can be formed between potted component and groove and it is expected to.

Other separately or with other integrate features and the feature that is considered to characteristic of the present invention is set forth in following additional claim.

According to the present invention's preferred embodiment, described groove has at least one inclined-plane extended in described direction of insertion and bottom surface, described potted component comprise in order to the side seals of described inclined-plane close contact and the described head with described bottom surface close contact.Forming multiple sealing area between potted component and groove makes sealing effectiveness therebetween more reliable.

According to the present invention's preferred embodiment, outer surface and the described inclined-plane of described side seals have roughly the same angle of inclination.

According to the present invention's preferred embodiment, the angle of the middle axial plane of the relatively described groove in described inclined-plane is not less than 4 degree, such as 5 degree ~ 6 degree.

According to the present invention's preferred embodiment, the side surface that described groove has a pair of opposing is to form a pair relative inclined-plane, described bottom surface connects described a pair inclined-plane, described a pair inclined-plane and form continuous print three sealing surfaces between bottom surface and described potted component.

According to the present invention's preferred embodiment, described potted component has the accepting groove of the edge part of accommodating described second component, and described accepting groove is surrounded by described three continuous print sealing surfaces.

According to the present invention's preferred embodiment, described potted component has the cross section being roughly U-shaped.

Another aspect of the present invention is about a kind of household electrical appliance, and it comprises the sealing system as described in above any one.

According to the present invention's preferred embodiment, described household electrical appliance comprise the low pressure storage unit with storeroom of can finding time, and described first component and described second component are described low pressure storage unit standalone configuration and the parts be fixed together.

According to the present invention's preferred embodiment, described first component is made of plastics, and described second component is made of metal and forms the main part of described low pressure storing.

According to the present invention's preferred embodiment, described second component is the box structure with at least one port, and described first component is connected to the edge part of described port, and described potted component is arranged along the whole edge part of described port.

According to the present invention's preferred embodiment, comprise the fixed cell in order to fixing described first component and described second component, described fixed cell makes described head remain on described direction of insertion to be extruded and to be out of shape.

Structure of the present invention and its other goals of the invention and beneficial effect will in conjunction with the drawings and description of preferred embodiments and more becoming apparent.

[accompanying drawing explanation]

As description a part and in order to provide a further understanding of the present invention, the following drawings diagram the specific embodiment of the present invention, and be used for principle of the present invention is described together with description.Wherein,

Fig. 1 is the schematic perspective view of refrigerating appliance in accordance with a preferred embodiment of the present invention, and wherein, the door of refrigerating appliance does not show.

Fig. 2 is the schematic assembling stereogram of low pressure storage unit in accordance with a preferred embodiment of the present invention.

Fig. 3 is schematic perspective view when low pressure storage unit is opened in accordance with a preferred embodiment of the present invention.

Fig. 4 is the schematic isometric exploded view of the main body of low pressure storage unit in accordance with a preferred embodiment of the present invention.

Fig. 5 is the sectional perspective schematic diagram of bonnet in accordance with a preferred embodiment of the present invention.

Fig. 6 illustrates that potted component is inserting the state partial schematic sectional view before groove in accordance with a preferred embodiment of the present invention.

Fig. 7 is the schematic section sectional view in A-A direction in Fig. 2.

Fig. 8 is the enlarged drawing of part B in Fig. 7.

[detailed description of the invention]

Please refer to Fig. 1, refrigerating appliance 1 comprises heat insulation casing 2, and casing 2 comprises shell 2a, inner bag 2b and is positioned at thermal insulation layer (not shown) therebetween.Casing 2 limits multiple heat insulation room, storeroom 3,4, and 5 with article such as stored foods.In the present embodiment, these rooms, storeroom are superposed refrigerator room 3 respectively, in the freezing compartment 5 of bottom and between the former two, temperature keeps slightly higher than fresh-keeping room 4 of zero degrees celsius.Room, storeroom 3,4,5 can be closed by each self-corresponding door (not shown).

Be to be understood that, the present invention should not be confined to the concrete distribution form of the packing compartments of refrigerating appliance, the present invention also can apply other forms of refrigerating appliance, such as, have the refrigerator of refrigerating chamber in up and down/lower upper distribution and refrigerating chamber, side by side combination refrigerator and have the refrigerator etc. of drawer type door and/or French door.

Refrigerating appliance 1 has the evaporation refrigeration system forming closed loop.Refrigeration system at least comprises compressor (not shown), condenser (not shown), throttling arrangement (not shown) and evaporimeter (not shown).In view of this refrigeration system is known technology in the prior art, therefore omits and it is further described.

Refrigerating appliance 1 is provided with the low pressure storage unit 7 with the storeroom 32 that can find time and the air extractor (not shown) in order to be detached from storeroom 32 by gas.Air extractor can comprise vavuum pump and be connected to the pipeline (not shown) between vavuum pump and low pressure storage unit 7.

In the present embodiment, low pressure storage unit 7 is arranged in fresh-keeping room 4.Low pressure storage unit 7 is positioned at the bottom of fresh-keeping room 4, is supported on the diapire of fresh-keeping chamber 4.In the present embodiment, the top of low pressure storage unit 7 is also provided with the antistaling container 6 that humidity is higher, be suitable for preserving the food such as vegetables.Should be appreciated that in other examples, it is indoor that low pressure storage unit 7 also can be arranged on other storerooms, the temperature-changing chamber that such as refrigerator room 3 or temperature range can switch between refrigeration warm area and freezing temperature region.

Fig. 2 is the schematic assembling stereogram of low pressure storage unit 7 in accordance with a preferred embodiment of the present invention.Fig. 3 is schematic perspective view when low pressure storage unit 7 is opened in accordance with a preferred embodiment of the present invention.Please refer to Fig. 2 and Fig. 3, in the present embodiment, low pressure storage unit 7 is roughly flat rectangular-shaped, the drawer container 9 being included in the open main body 8 in one end and being housed in movably in main body 8.

Main body 8 limits the flat receiving space with front opening.The antetheca of drawer container 9 forms the door 10 of the front opening in order to close main body 8, is connected to tray-like container body 12 on rear side of door 10 in order to preserve article.Main body 8 is accommodated and is fixed in casing 2, and main body 8 is preferably removably fixed in fresh-keeping room 4.User is by obtaining to the pull of drawer container 9 article being positioned at low pressure storage unit 7.

The width of main body 8 and door 10 be slightly smaller than respectively fresh-keeping between the width of room 4, and make main body 8 and door 10 can insert fresh-keeping between in room 4 or from pull-out in room 4 between fresh-keeping, therefore low pressure storage unit 7 both sides meeting and fresh-keeping between room 4 inner bag 2b between form gap.In order to block such gap, low pressure storage unit 7 can comprise the front end being arranged on main body 8 deformable screening gap part 50.

The housing 40 of low pressure storage unit 7 is made up of the door 10 of main body 8 and drawer container 9.Housing 40 defines the storeroom 32 that can find time, and tray-like container body 12 is positioned at storeroom 32.In the present embodiment, storeroom 32 is formed by the receiving space of main body 8 in fact.

When storeroom 32 is closed by door 10 and air extractor starts, the gas being positioned at storeroom 32 is pulled out, and storeroom 32 is in low-pressure state.According to the present invention's preferred embodiment, when finding time EP (end of program), the pressure in storeroom 32 is between one between standard atmospheric pressure and absolute vacuum (such as, its absolute pressure is less than 690 millibars).Because the air pressure in storeroom 32 is lower than standard atmospheric pressure, those skilled in the art are also commonly called as its " vacuum chamber ".In the present embodiment, the volume of storeroom 32 is approximately 20L.

The front end of main body 8 and/or door 10 can arrange potted component (not shown), to make when drawer container 9 is in complete closed position main body 8 and to form air-tightness between door 10 and engage, prevent gas from entering storeroom 32 from the joint between main body 8 and door 10.

Telescopic rail unit 14 is set between drawer container 9 and main body 8, thus drawer container 9 can pull out glibly or push in main body 8 from main body 8.

Door 10 is provided with fluid and is communicated with the filling channel (not shown) inside and outside storeroom 32 and opens or closes the charge valve (not shown) of this filling channel.When this charge valve opens filling channel, extraneous gas enters the low-pressure state of storeroom 32 and then release storeroom 32 by filling channel.

The front end of door 10 is provided with handle 13, and user is by this handle 13 operating drawer formula container 9.In a preferred embodiment, the mode that charge valve and handle 13 link is arranged, and namely when handle 13 is by operation, charge valve is opened and storeroom 32 is communicated with external fluid, and then gas can enter storeroom 32 and discharge the low-pressure state of storeroom 32.In other examples, charge valve also can be isolated to handle 13 ground and arrange, and such as on door 10, be provided with a button, by pressing this button, charge valve is opened, and user opens door 10 by operating handle 13 afterwards.

Owing to will form the comparatively complicated structure such as charge valve, handle 13, the door 10 forming storeroom 32 antetheca is made up of the plastics being easy to moulding.In the present embodiment, door 10 is made up of ABS resin (acrylonitrile-butadiene-styrene copolymer).

The inner surface of door 10 is exposed to storeroom 32, and outer surface forms a part for the outline of low pressure storage unit 7 and defines the part of the wall of storeroom 32.When storeroom 32 is in low-pressure state, door 10 needs to bear external and internal pressure difference, and tray-like container body 12 then need not bear pressure because being positioned at storeroom 32, and therefore, door 10 has the wall thickness larger than tray-like container body 12.In the present embodiment, the thickness of door 10 is 6 millimeters, and the thickness of tray-like container body 12 can be then 1 ~ 2 millimeter.

Fig. 4 is the schematic isometric exploded view of main body 8 in accordance with a preferred embodiment of the present invention.Incorporated by reference to 2 and Fig. 3 with reference to Fig. 4, the box-shaped box body 11 that main body 8 comprises rear and front end opening, be fixed on box body 11 rear end with the bonnet 16 of the rear port 26 of enclosure body 11 and be fixed on box body 11 front port 25 edge before linkage unit 17.

Box body 11 and bonnet 16 and arrange potted component 18 respectively between box body 11 and front linkage unit 17, to make box body 11 respectively and form air-tightness between bonnet 16 and front linkage unit 17 and connect.

In the present embodiment, box body 11 comprises by the larger metal roof 21 of the strength of materials, diapire 23, is connected to left and right sidewall 22 between roof 21 and diapire 23.Box body 11 constitutes the major part of housing 40.In the present embodiment, the inner side of metal roof 21, diapire 23 and left and right sidewall 22 is exposed to storeroom 32 respectively, outer surface then forms a part for the outline of low pressure storage unit 7, and constitute the overwhelming majority of storeroom 32 upper wall, lower wall and two side, the inner side of front linkage unit 17, owing to being also exposed to storeroom 32, therefore which constitutes the tiny segment on storeroom 32 coboundary, lower boundary and border, both sides.When storeroom 32 is in low-pressure state, box body 11, front linkage unit 17 and bonnet 16 all bear the pressure formed because the pressure in storeroom 32 is less than outside.Should be appreciated that in other examples, it is also possible that storeroom 32 upper wall, lower wall and two side are formed by metal box body 11 completely.

Roof 21, diapire 23, left and right sidewall 22 can be made up of steel plate, and wall thickness is not more than 4 millimeters, and best, the wall thickness of these walls 21-23 is 2 millimeters ~ 2.5 millimeters.

The roof 21 of box body 11, diapire 23 and left and right sidewall 22 preferably monolithic structure, thus reduce the connecting sewing even eliminated between these walls.In the present embodiment, roof 21, diapire 23 and left and right sidewall 22 weld after bending to rectangle by a block plate (cold-reduced sheet) and are formed.As shown in Figures 3 and 4, weld seam 33 is positioned at the mid portion of right side wall 22, and the pressure born than roof 21 and diapire 23 due to sidewall 22 is less, this is conducive to reducing the possibility that gas leakage occurs weld seam 33 under stress on the one hand, on the other hand, in welding step, this is also beneficial to the setting of fixture; In addition, because weld seam is arranged on the sidewall being not easy to be noted by the user, this mode is also beneficial to acquisition refrigerating appliance more attractive in appearance 1.

Should be appreciated that in other examples, by polylith metallic plate, the roof 21 of box body 11, diapire 23 and left and right sidewall 22 connect that (such as welding) formed also is possible.

In addition, box body also can be made up of other metal materials, such as aluminium.When box body is fabricated from aluminum, box body is preferably overall to be obtained by expressing technique.Because the elastic modelling quantity of aluminium is lower than the elastic modelling quantity of steel, the wall thickness of box body therefore made of aluminum more preferably greater than 2 millimeters, such as 4 millimeters.

In the present embodiment, roof 21 and diapire 23 have symmetrical structure, form the wall that box body 11 has maximum area.When low pressure storage unit 7 is in low-pressure state, roof 21 and diapire 23 bear larger pressure than other walls of low pressure storage unit 7.In order to increase the moment of inertia of roof 21 and diapire 23, roof 21 and diapire 23 are stamped out the elevated regions 34 protruded many places respectively outwardly.

Front linkage unit 17 and bonnet 6 are fixed on box body 11 to not bore a hole on roof 21, left and right sidewall 22 and diapire 23, according to the present invention's preferred embodiment, as shown in Fig. 3, Fig. 4 and Fig. 7, in the front and back ends region of box body 11, the outside of roof 21, diapire 23 and left and right sidewall 22 is respectively equipped with installation sheet 27.Installation sheet 27 can be made of metal, such as steel plate.

Each installation sheet 27 comprises the connection foot 27a being horizontally fixed on respective wall 21-23.In the present embodiment, installation sheet 27 is fixed on box body 11 by connection foot 27a is welded in respective wall 21-23.In other examples, installation sheet 27 also can be fixed on box body 11 by other means, such as, be bonded in it box.

Installation sheet 27 comprises from connecting the extension 27b extended outwardly after foot 27a bends.In the present embodiment, extension 27b is approximately perpendicular to respective wall 21-23.Extension 27b is tabular, has smooth front surface and rear surface.The extension 27b being positioned at box body 11 front-end and back-end respectively distance box body 11 front/rear end at a certain distance.

In the present embodiment, extension 27b and the installation sheet 27 being connected foot 27a and jointly forming the cross section with L-type.But in other examples, extension 27b also can be integrally formed on respective wall 21-23 and directly extend outwardly from the respective wall 21-23 of box body 11.

Each extension 27b is provided with multiple the first hole 31a running through its front and rear surfaces.Preferably, spaced predetermined distance between the first hole 31a of each extension 27b, is arranged in a row.The the first hole 31a being positioned at box body 11 front-end and back-end forms the rectangle frame that a size is greater than front/rear port 25,26 respectively, in box body 11 is enclosed in by corresponding rectangle frame.Wherein, the first hole 31a being positioned at box body 11 rear end is provided with screw thread, and the first hole 31a being positioned at box body 11 front end does not arrange screw thread.

Below describe the structure of bonnet 16 in accordance with a preferred embodiment of the present invention and front linkage unit 17 in detail.

As shown in figs. 4 and 7, bonnet 16 is connected to the rear port 26 of box body 11, forms the rear wall of housing 40 and defines the rear border of storeroom 32.Bonnet 16 has the tetragonal tabular corresponding to rear port 26, and its size is greater than the size of rear port 26, extends beyond outside rear port 26.

Bonnet 16 is provided with the bleed-off passage (not shown) that runs through bonnet 16 and the extraction valve unit 36 in order to close or to open bleed-off passage selectively.In the present embodiment, extraction valve unit 36 extends on roof 21, has the connector 39 be positioned at above roof 21.Low pressure storage unit 7 is connected with the pipeline be fixed on casing 2 by connector 39, and low pressure storage unit 7 can be communicated with air extractor fluid.

Bonnet 16 comprises the main body wall portion 20 forming its overwhelming majority and the rear connecting portion 19 arranging the edge bonnet 16 to be connected to rear port 26 round the surrounding of main body wall portion 20.The whole edge conjunction of rear connecting portion 19 and rear port 26.

In the present embodiment, rear connecting portion 19 and main body wall portion 20 are made up of the plastics integrated injection molding of elastic modelling quantity lower than metal.Preferably, bonnet 16 is made up of the materials polycarbonate (PC) with larger intensity.The thickness of the main body wall portion 20 be made up of PC is 6 millimeter.In order to strengthen the intensity of main body wall portion 20, the rear surface of main body wall portion 20 can also be provided with multiple reinforcement 35.

Should be appreciated that in other examples, rear connecting portion 19 is fixed to form bonnet 16 after also can providing respectively with main body wall portion 20 with being tightly connected again, and for the situation that rear connecting portion 19 is made up of different materials with main body wall portion 20, this is advantageous particularly.

Front linkage unit 17 is connected to the whole edge of front port 25, has the cubic frame-shaped construction forming closed loop.Front linkage unit 17 has the interface 37 in order to dock with door 10, and in the present embodiment, interface 37 is smooth, is positioned at same longitudinal surface.When door 10 is closed, the seal on door 10 is pressed between interface 37 and door 10 to realize sealing.

In order to make front linkage unit 17 and bonnet 16 be connected to airtightly respectively on box body 11, front linkage unit 17 and bonnet 16 are at the groove 30 being respectively equipped with the annular receiving annular seal element 18 towards the side of box body 11.The front and back end of the roof 21 of box body 11, sidewall 22 and diapire 23 is inserted in respective slot 30 respectively, and potted component 18 is between groove 30 and box body 11.

In the outside of groove 30, front linkage unit 17 and bonnet 16 are respectively equipped with multiple second hole 31b.These second holes 31b lays respectively at front linkage unit 17 and rear connecting portion 19 exceeds in the part of the outer surface of roof 21, sidewall 22 and diapire 23, thus is positioned at outside storeroom 32.The second hole 31b on front linkage unit 17 and bonnet 16 forms the rectangle frame that a size is greater than front/rear port 25,26 respectively.

In the present embodiment, the rear side being positioned at second hole 31b the past linkage unit 17 on front linkage unit 17 extends forward, and not penetrating front linkage unit 17, is blind hole, is provided with screw thread with hold-down screw 29 in it.The the second hole 31b be positioned on bonnet 16 extends forward from the rear side of rear connecting portion 19 and penetrates rear connecting portion 19, is the via hole of respective screws 29.

Front linkage unit 17 is by plastics integrated injection molding.In the present embodiment, owing to being provided with the screwed hole in order to hold-down screw 29 on front linkage unit 17, front linkage unit 17 by the larger PC resin of intensity and toughness good ABS resin mixed injection molding shaping, to balance its intensity and toughness.

The following specifically describes front connection box 17, fixed form between bonnet 16 and box body 11.

Front linkage unit 17 and bonnet 16 are fixed on the front and back ends of box body 11 respectively by multiple fixed cell.

In the present embodiment, each fixed cell comprises screw 29, is arranged on the first hole 31a on the installation sheet 27 of box body 11 and is positioned at the second hole 31b be arranged on front linkage unit 17/ bonnet 16, by forming screw thread with wherein tool threaded first hole 31a or the second hole 32b and fix after screw 29 being inserted the first hole 31a and the second hole 32b, front linkage unit 17/ bonnet 16 is fixed on box body 11 respectively.In the mode that screw 29 is fixing, fixed cell is provided pretightning force between front linkage unit 17 and box body 11 and between bonnet 16 and box body 11, thus extruding can be formed to potted component 18 between front linkage unit 17/ bonnet 16 and box body 11, this can strengthen the sealing effectiveness between front linkage unit 17/ bonnet 16 and box body 11.

In other embodiments, fixed cell also can adopt other can provide the fixture of pretightning force.Such as, screw can be replaced by the shaft-like fixture of integrated injection molding on front linkage unit 17 and bonnet 16, now can omit the second hole 31b be arranged on connection box 17 and bonnet 16.

In the present embodiment, due to first, second hole 31a, 31b expansion body is positioned at the outside of storeroom 32, and therefore the inside of storeroom 32 can not be communicated with external fluid because of the setting of the first hole 31a and the second hole 31b.In addition, because the first hole 31a and the second hole 31b is positioned at the outside of annular seal element 18, the first hole 31a and the second hole 31b completely cut off with storeroom 32 and are not communicated with.By this way, stop extraneous gas and entered possibility in storeroom 32 by first and second hole 31a, 31b, that is, these first and second holes 31a, 31b can not have a negative impact to the air-tightness of storeroom 32, thus is conducive to the air-tightness improving low pressure storage unit 7.

In an embodiment of the present invention, the housing 40 of low pressure storage unit 7 comprises by the strength of materials comparatively large in an embodiment of the present invention, the housing 40 of low pressure storage unit 7 comprises by larger metal first component (as box body 11) of the strength of materials and multiple relatively little and second component (front linkage unit 17 made by the plastics being easier to moulding by the strength of materials, bonnet 16 and door 10), thus, on the one hand, first component can be less wall thickness can obtain larger intensity to bear external pressure, and then reduce distortion that storeroom 32 produces when being in low-pressure state and improve the air-tightness of storeroom 32, this advantage when have maximum area storeroom 32 wall (roof 21 and diapire 23) mainly or be made of metal completely particularly outstanding, especially, when the main part of housing 40 is made of metal, this advantage just seems remarkable especially, on the other hand, due to housing be also included in bear when storeroom 32 is in low-pressure state pressure plastics second component (as bonnet 16, door 10, front linkage unit 17), can relative complex be set on these second components, precision is high, structure that seal request is high (such as very high charge valve, extraction valve unit etc. being required to air-tightness), to improve the air-tightness of low pressure storage unit.Further, because metal first component can have less wall thickness and its good heat-transfer, even if therefore second component has larger wall thickness, also can conduct heat well inside and outside storeroom.In addition, when second component only form housing smaller portions, particularly it no longer has box-like structure time, its moulding process is relatively easy, simultaneously, because of the fraction that it is only low pressure storage unit 7, they also can not cause significant impact on the heat transfer inside and outside low pressure storage unit 7.

Below describe a preferred embodiment of the sealing system between box body 11 and front linkage unit 17 and bonnet 16 in detail.

In the present embodiment, potted component 18 for front linkage unit 17 and bonnet 16 has roughly the same structure, and the structure that front linkage unit 17 and bonnet 16 dock is also roughly the same, therefore, only describe for example with the sealing system between bonnet 16 and main unit 11 below.

Please refer to Fig. 4-Fig. 8, annular groove 30 is arranged along the surrounding of bonnet 16, forms opening 61 opening towards the side of agent-oriention unit 11.Groove 30 is positioned within the rectangle frame that formed by the second hole 31b.

Potted component 18 has elasticity, is preferably made up of silicon rubber.Potted component 18 has the closed loop shaped as frame shape of the shape and size corresponding to rear port 25.Potted component 18 has the accepting groove 65 of the edge part of accommodating rear port 25.Preferably, after potted component 18 is enclosed within the whole edge part of rear port 25, potted component 18 is inserted in groove 30 together with the edge part of rear port 26.

Groove 30 has diminishing shape on the direction of insertion C of potted component 18.Therefore, on same cross section, the opening 61 of groove 30 has maximum size compared to its other parts.

The bottom surface 63 that groove 30 comprises pair of opposing, the inclined-plane 62 that direction of insertion C extends and is connected between inclined-plane 62.Angle between inclined-plane 62 and the middle axial plane D of groove 30 is preferably not less than 4 degree, such as 5 degree ~ 6 degree.Inclined-plane 62 is formed by the side inner surface of groove 30.

Potted component 18 has the cross section being roughly U-shaped.Potted component 18 comprises a pair in order to the side seals 64 of inclined-plane 62 close contact and be connected to this to the head 60 between side seals 64.Accepting groove 65 is surrounded by sidewall sealing 64 and head 60 and is formed.

The outline of the potted component 18 be made up of the outer surface of side seals 64 and head 60 also in contraction-like gradually, thus has minimum size in same cross section head portion 60 compared to the other parts of potted component 18 on the direction of insertion C of potted component.

Outer surface and the corresponding inclined-plane 62 of side seals 64 have roughly the same angle of inclination.Preferably, the shape and size of the outline of potted component 18 are in a free state roughly corresponding with groove 30.When potted component 18 is inserted groove 30, the head 60 due to potted component 18 is less than the opening 61 of groove 30, and potted component 18 successfully can be aimed at and insert in groove 30.Along with going deep into gradually of potted component 18, the side seals 64 of potted component 18 little by little contacts with inclined-plane 62.At the head 60 of potted component 18 with bottom surface 63 close contact and while being extruded and shortening to produce sealing surface between, the side seals 64 with inclined outer surface is also extruded by inclined-plane 62 and is out of shape, and with inclined-plane 62 close contact and form sealing surface.Afterwards, bonnet 16 and main unit 11 are fixed together by the fixed cell comprising screw 29, keep the state that is extruded and produce on direction of insertion C and shorten distortion to make head 60.

Because potted component 18 and groove 30 have diminishing shape on the direction of insertion C of potted component 18 respectively, potted component 18 is aimed at and inserted groove 30 and become and be more prone to; In addition, even if the side seals 64 of potted component 18 was not extruded by the inclined-plane 62 of groove 30 or suffered extruding force less (this is conducive to the insertion of potted component 18) before head 60 is extruded shortening, be extruded along with head 60 and shorten, side seals 64 travels forward further and can the more fraction of groove 30 be extruded, and then makes also to form well sealing between side seals 64 and inclined-plane 62.

In addition, form continuous print three sealing surfaces between potted component 18 and groove 30 and make sealing therebetween especially reliable, the edge part of rear port 26 also very closely can be sandwiched in accepting groove 65 and form continuous print three sealing surfaces simultaneously.

Should be appreciated that above-mentioned sealing system should not be only limitted to be used between main unit 11 and front linkage unit 17/ bonnet 16, but also can use any standalone configuration and between be fixed together two parts.Obviously, on the household electrical appliance (such as water heater, washing machine, kitchen range) that it also can be applied to except refrigerating appliance.

Claims (18)

1. a sealing system, comprising:

First component (16,17);

Second component (11); And

In order to make described first component (16,17) (11) form the potted component (18) of sealing and between described second component, described first component (16,17) has the groove (30) at least partially holding described potted component (18);

It is characterized in that, described groove (30) and described potted component (18) have the shape reduced continuously gradually in the direction of insertion (C) of described potted component (18) respectively, and the head (60) of described potted component (18) is less than the opening (61) of described groove (30), described groove (30) has at least one inclined-plane (62) in the upper extension of described direction of insertion (C) and bottom surface (63), described potted component (18) comprise in order to the side seals (64) of described inclined-plane (62) close contact and the described head (60) with described bottom surface (63) close contact, the side surface that described groove (30) has a pair of opposing is to form a pair relative inclined-plane (62), described bottom surface (63) connects described a pair inclined-plane (62), described a pair inclined-plane (62) and form continuous print three sealing surfaces between bottom surface (63) and described potted component (18).

2. sealing system as claimed in claim 1, it is characterized in that, outer surface and described inclined-plane (62) of described side seals (64) have roughly the same angle of inclination.

3. sealing system as claimed in claim 1, it is characterized in that, the angle of the middle axial plane (Z) of described inclined-plane (62) relatively described groove (30) is not less than 4 degree.

4. sealing system as claimed in claim 3, it is characterized in that, the angle of the middle axial plane (Z) of described inclined-plane (62) relatively described groove (30) is 5 degree ~ 6 degree.

5. sealing system as claimed in claim 1, it is characterized in that, described potted component (18) has the accepting groove (65) of the edge part of accommodating described second component (11), and described accepting groove (65) is surrounded by described continuous print three sealing surfaces.

6. the sealing system as described in above any one claim, is characterized in that, described potted component (18) has the cross section being roughly U-shaped.

7. household electrical appliance, comprise the sealing system as described in above any one claim.

8. household electrical appliance, comprise the low pressure storage unit (7) with storeroom of can finding time, and described low pressure storage unit (7) comprises main body and the door in order to close described storeroom, and it is characterized in that, described main body comprises:

First component (16,17); And

Second component (11), wherein, described first component and described second component standalone configuration are also fixed together and form the part of the wall of described storeroom (32) respectively, wherein, when described storeroom is in low-pressure state, described first component and described second component all bear the pressure formed because the pressure in storeroom is less than outside;

Described main body also comprises the potted component (18) making to form sealing between described first component (16,17) and described second component (11);

Described first component (16,17) has the groove (30) at least partially holding described potted component (18);

Described groove (30) and described potted component (18) have the upper diminishing shape of direction of insertion (C) in described potted component (18) respectively, and the head (60) of described potted component (18) is less than the opening (61) of described groove (30);

Described main body also comprises the fixed cell in order to fixing described first component (16,17) and described second component (11), and described fixed cell makes described head (60) remain on described direction of insertion to be extruded and to be out of shape.

9. household electrical appliance as claimed in claim 8, it is characterized in that, described first component (16,17) is made of plastics, and described second component (11) is made of metal and forms the main part of described low pressure storage unit (7).

10. household electrical appliance as claimed in claim 8, it is characterized in that, described second component (11) is for having at least one port (25,26) box structure, described first component (16,17) is connected to the edge part of described port (25,26), described potted component (18) is arranged along the whole edge part of described port (25,26).

11. household electrical appliance as claimed in claim 9, it is characterized in that, described second component (11) is for having at least one port (25,26) box structure, described first component (16,17) is connected to the edge part of described port (25,26), described potted component (18) is arranged along the whole edge part of described port (25,26).

12. as the household electrical appliance in claim 8 to 11 as described in any one, it is characterized in that, described groove (30) has at least one in the upper inclined-plane (62) that extends of described direction of insertion (C) and bottom surface (63), described potted component (18) comprise in order to the side seals (64) of described inclined-plane (62) close contact and the described head (60) with described bottom surface (63) close contact.

13. household electrical appliance as claimed in claim 12, is characterized in that, outer surface and described inclined-plane (62) of described side seals (64) have roughly the same angle of inclination.

14. household electrical appliance as claimed in claim 12, is characterized in that, the angle of the middle axial plane (Z) of described inclined-plane (62) relatively described groove (30) is not less than 4 degree.

15. household electrical appliance as claimed in claim 14, is characterized in that, the angle of the middle axial plane (Z) of described inclined-plane (62) relatively described groove (30) is 5 degree ~ 6 degree.

16. as the household electrical appliance in claim 8 to 11 as described in any one, it is characterized in that, the side surface that described groove (30) has a pair of opposing is to form a pair relative inclined-plane (62) and bottom surface (63), described bottom surface (63) connects described a pair inclined-plane (62), described a pair inclined-plane (62) and form continuous print three sealing surfaces between bottom surface (63) and described potted component (18).

17. household electrical appliance as claimed in claim 16, it is characterized in that, described potted component (18) has the accepting groove (65) of the edge part of accommodating described second component (11), and described accepting groove (65) is surrounded by described continuous print three sealing surfaces.

18., as the household electrical appliance in claim 8 to 11 as described in any one, is characterized in that, described potted component (18) has the cross section being roughly U-shaped.