CN102235789A - Refrigerator - Google Patents

Abstract

The invention relates to a refrigerator. The invention aims at providing a refrigerator characterized by providing a decompression chamber formed by resin, improving rigidity, expanding width, and increasing inner volume. An external contour part (14) is made to a resin forming member divided into upper and lower two parts and a sealing structure with mutual maintenance of air impermeability. The internal of the external contour part can not be limited to the shape of a taper from the opening, and is further made to a dome shape protruding to the external side for ensuring strength. Via making a dividing surface (142a) incline from the surrounding of the rear part at the upper part of the opening (140r), and in a mode of gradually reducing toward the rear part to become a plane of a rear surface wall (140d) connecting a roughly central part of the rear surface wall of the external contour part (14), thereby preventing an upper housing (141) from forming a thin plate shape to ensure thickness (141t) and strength. Since the dividing surface (142a) is an inclined plane, therefore, precision is easily reached, and air impermeability is easily maintained.

Description

Refrigerator

Technical field

The present invention relates to refrigerator.

Background technology

The refrigerator of patent documentation 1 (No. 4324635 communique of Japan Patent) record, from the topmost of the storage space of the refrigerator main body inside that constitutes by body of thermal insulating box dispose refrigerating chamber, vegetable compartment successively independently, be divided into about and the temperature transition chamber and the ice making storage chamber of row arrangement, and the refrigerating chamber of foot.

In the indoor pressure-reducing chamber that food is reduced pressure and holds storage that is provided with of temperature transition, in the inner face side of pressure-reducing chamber door the pair of right and left carriage of side direction extension inwards is installed, by food containers is placed and remained between this carriage, thereby food containers freely can be pulled out outside refrigerator with door.

The refrigerator of patent documentation 2 (TOHKEMY 2009-036453 communique) record disclose with tempered glass strengthened the pressure-reducing chamber above, strengthened the following structure in pressure-reducing chamber with iron plate.The decompression chamber cap is supported on the guide rail that is arranged at about the pressure-reducing chamber outside and structure that can front-rear reciprocation movement, by being arranged at the rack gearing on the guide rail and the engagement of rack gearing, and it is synchronous about utilizing the lazy-tongs that connected to adopt with left and right sides pinion, can not tilt thereby make in horizontal plane, can successfully carry out the structure of linear reciprocating motion.

In patent documentation 1, the pressure-reducing chamber forms by resin is integrally formed, and in order to pull out inboard mould from the opening of front, make along with the thin shape of front end that is provided with tapered so-called demoulding tapering towards depth direction in the pressure-reducing chamber.Therefore, the pressure-reducing chamber narrows down along with entering the inboard, and can not to make from opening to inboard face be identical section.

Internal volume is maximized, then hold various food easily, big to user's benefit.But,, need further to improve the rigidity of container because the wideest top and bottom deflection to the inside of area is excessive when inside reduced pressure.In order to improve rigidity, can consider following the whole bag of tricks: strengthen the wall thickness of resin, increase the content of fiberglass reinforcement in the resin material etc. and improve the rigidity of material itself, and a plurality of ribs are set, the surface is made the dome shape of protrusion laterally etc.At this, the cost that can increase resin because of the content that strengthens wall thickness, increase fiberglass reinforcement is undesirable.In addition, if too much ribs is set, then the mould of using for moulding need be processed a plurality of and the corresponding groove of this ribs, cause the intensity of mould to reduce, thereby also there is certain limitation in the increase ribs.Therefore, the little dome shape of radius of curvature that protrudes is as wide as possible laterally made in the big top and bottom of each face, especially area that preferably will constitute the pressure-reducing chamber, and the structure of ribs suitably is set.

But, adopt the integrally formed demoulding tapering that utilizes of resin to make the thin structure of front end owing to needing only like that as mentioned above to the pressure-reducing chamber, thereby can not make the dome shape that protrudes laterally.

On the other hand, if will the radius of curvature of top and bottom be reduced with the thin shape of front end, then along with near the inboard thin shape of front end that becomes sharp, highly reduction and internal volume reduces.That is, occurred making the integrally formed structure of fat enlarge internal volume and improved the problem of the opposite situation of the purpose of rigidity with employing.

In patent documentation 2, disclose with tempered glass strengthened the pressure-reducing chamber above, strengthened the following structure in pressure-reducing chamber with crooked iron plate.

In this structure since above be the plane, be along iron plate the same basically shape from the opening to the inboard below, be that front end is thin unlike resin is integrally formed.But if enlarge width, then cost increases, weight increases because of tempered glass, enhancing iron plate are all maximized.For example, the physical dimension width of employing patent documentation 2 is about the occasion of 40mm, and weight is about 7kg, if its width expands 1.5 times to, then weight also reaches about 10kg.Because of such weight increase also comprises the fabrication stage, also need extra cost and energy in the carrying of goods and in being provided with and undesirable.

If enlarge the width in pressure-reducing chamber, then the width in pressure-reducing chamber becomes bigger than the width of the refrigerating-chamber door of a side of the so-called appearance of french doors refrigerator of the formula of splitting around.This occasion is because therefore the refrigerating-chamber door about opening simultaneously carries out opening operation with pulling out in front of the pressure-reducing chamber.When closing, push after the pressure-reducing chamber closes the refrigerating-chamber door about closing.

At this moment, if the central authorities' door that can close the pressure-reducing chamber of the door in pushing pressure-reducing chamber at once, but when the end of thrust door, Yin Men tilts and can not close smoothly.According to circumstances, also have door or container to be stuck and situation about can not close.

Have, under the pent situation of refrigerating-chamber door of refrigerator main body under the opened state in pressure-reducing chamber, the door pocket that is arranged on the refrigerating-chamber door inboard is run near the end of door in pressure-reducing chamber again.At this moment the door in the pressure-reducing chamber tilts and under the situation about can not close, refrigerating-chamber door is not closed yet.

Therefore, in patent documentation 2, though with tooth bar and pinion synchronously connect be arranged on the pressure-reducing chamber the door about guide rail, but a kind of both sides, the outside that slide rail are arranged on the pressure-reducing chamber, on its left and right sides slide rail, tooth bar is set respectively, again with axle connect with the rotation of each tooth bar engagement freely left and right sides pinion and make its synchronous labyrinth.

Summary of the invention

In view of there being the problems referred to above, the objective of the invention is to obtain a kind of cheapness, lightweight refrigerator with storeroom of gas regulation chamber etc.In addition, the objective of the invention is to obtain that a kind of switch motion is smooth and easy, the discrepancy of repertory and be cleaning food disc easy-off pressure-reducing chamber.

In order to achieve the above object, refrigerator of the present invention possesses: have the storeroom that makes first opening that repertory comes in and goes out; Open and close the cover of above-mentioned first opening; And be arranged between above-mentioned first opening of above-mentioned cover and above-mentioned cover butt and suppress the seal member that moves of the gas between above-mentioned cover and above-mentioned first opening, it is characterized in that, have the first outline parts and the second outline parts, the above-mentioned first outline parts have top, following left and right sides face and with the relative back of above-mentioned first opening, and formed second opening on top; The above-mentioned second outline parts seal above-mentioned second opening; Above-mentioned second opening is formed obliquely in the above-mentioned back side of the above-mentioned first outline parts mode than the above-mentioned first open side step-down.

In addition, the feature of refrigerator is that the section of above-mentioned second opening portion is the inclined plane.

In addition, the feature of refrigerator is, the periphery of above-mentioned second opening has seal member, so that suppress the moving of gas between above-mentioned first outline parts and the above-mentioned second outline parts.

In addition, the feature of refrigerator is the above-mentioned first outline parts to be contacted, so that suppress moving of gas with pressure with the part that the above-mentioned second outline parts join.

In addition, the feature of refrigerator is, with above the above-mentioned first outline parts above-mentioned, above-mentioned below, above-mentioned left and right sides face and above-mentioned back make the dome shape that protrudes laterally respectively.

Effect of the present invention is as follows.

According to the present invention, can obtain keeping intensity with simple structure, have the refrigerator of the storeroom of cheap, lightweight gas regulation chamber etc.

In addition, can also obtain switch motion smooth and easy, easily put into or take out repertory, in order to clean food disc easy-off pressure-reducing chamber.

Description of drawings

Fig. 1 is the figure from the refrigerator main body of forward observation embodiments of the present invention.

Fig. 2 is the schematic sectional view along the A-A line of Fig. 1.

Fig. 3 is the B-B line cutaway view along Fig. 1.

Fig. 4 is illustrated in the state that refrigerating-chamber door and pressure-reducing chamber Men Jun are opened in the B-B line cutaway view of Fig. 1.

Fig. 5 is a stereogram of observing the structure in pressure-reducing chamber from oblique front upper place.

Fig. 6 is a simple three-dimensional exploded view of observing the outline parts from the front upper place.

Fig. 7 is the front view of seeing from the C direction of Fig. 6.

Fig. 8 is the K-K line cutaway view along Fig. 6.

Fig. 9 is the J-J line cutaway view along Fig. 5.

Figure 10 be from the C direction observe Fig. 5 to view.

Figure 11 is the D-D line cutaway view along Figure 10.

Figure 12 is the F-F line cutaway view along Figure 10.

Figure 13 is the E-E line cutaway view along Figure 11.

Figure 14 is stereogram structure, that see from the A direction of Fig. 5 of expression cover and food disc.

Figure 15 is stereogram structure, that see from the B direction of Fig. 5 of expression cover and food disc.

Figure 16 is the stereogram of the structure of expression pinion.

Figure 17 is the D-D line cutaway view along Figure 12.

Figure 18 is the D-D line cutaway view along Figure 12, is the figure of full-gear of the cover in expression pressure-reducing chamber.

Figure 19 is a stereogram of observing the structure in pressure-reducing chamber from oblique front upper place, is the figure of the full-gear of expression cover.

Figure 20 is the G-G line cutaway view along Figure 10.

Figure 21 is the partial sectional view of an example at junction surface of the outline parts that separate up and down in expression formation of the present invention pressure-reducing chamber.

Figure 22 is the partial sectional view of another embodiment at junction surface of the outline parts that separate up and down in expression formation of the present invention pressure-reducing chamber.

Figure 23 is the partial sectional view of an embodiment again at junction surface of the outline parts that separate up and down in expression formation of the present invention pressure-reducing chamber.

Figure 24 is cover and the support portion of switch knob and the figure that cover lock is decided the state that unlocks of the guiding groove member cover that utilizes switch knob on every side in expression pressure-reducing chamber shown in Figure 17.

Figure 25 is that the support portion of the cover in expression pressure-reducing chamber shown in Figure 17 and switch knob and cover lock decide will lock the figure of state before around the guiding groove member.

Figure 26 is cover and the support portion of switch knob and the figure that cover lock is decided the lock-out state of the guiding groove member cover that utilizes switch knob on every side in expression pressure-reducing chamber shown in Figure 17.

Figure 27 is the state of cover and food disc is pulled down in expression from the pressure-reducing chamber figure.

Figure 28 is the approximate vertical view that the position of the engagement of explanation tooth bar and pinion and outline parts and food disc concerns.

Figure 29 is the D-D cutaway view along Figure 10 of the state in the switching process of expression cover and food disc.

Figure 30 is the part figure of the engagement of explanation tooth bar and pinion.

Figure 31 is the part figure of the engagement of explanation tooth bar and pinion.

Figure 32 is the partial sectional view of order of dismounting, the installation of explanation cover and food disc.

Figure 33 is the partial sectional view of order of dismounting, the installation of explanation cover and food disc.

Figure 34 is the partial sectional view of order of dismounting, the installation of explanation cover and food disc.

Figure 35 is the partial sectional view of order of dismounting, the installation of explanation cover and food disc.

Figure 36 is the partial sectional view of order of dismounting, the installation of explanation cover and food disc.

Figure 37 is the partial sectional view of order of dismounting, the installation of explanation cover and food disc.

Figure 38 is the partial sectional view of order of dismounting, the installation of explanation cover and food disc.

Figure 39 is the partial sectional view of order of dismounting, the installation of explanation cover and food disc.

Figure 40 is the partial sectional view of order of dismounting, the installation of explanation cover and food disc.

Figure 41 is the partial sectional view of order of dismounting, the installation of explanation cover and food disc.

Among the figure:

The 1-refrigerator, 2-refrigerating chamber, 3-ice-making compartment, 4-quick-frozen refrigerating chamber, 5-refrigerating chamber, the 6-vegetable compartment, 12-vavuum pump, 13-pressure-reducing chamber (storeroom, gas regulation chamber), 14-outline parts, 15-pinion gear mechanism, the 16-chamber cap (cover) that reduces pressure, 17-food disc, 140-lower house, 141-upper shell.

The specific embodiment

Below, with reference to accompanying drawing embodiments of the present invention are described.Fig. 1 is the front view that adopts the refrigerator main body 1 of embodiments of the present invention.Fig. 2 is the schematic sectional view along the A-A line of Fig. 1.

The overall structure of refrigerator main body 1 at first, is described.

As shown in Figure 1, adopted refrigerator main body 1 of the present invention to be configured to respectively: topmost is that refrigerating chamber 2, the foot as the storeroom of refrigerated storage temperature band about 6 ℃ is the vegetable compartment 6 as the storeroom of refrigerated storage temperature band about 6 ℃.Between refrigerating chamber 2 and vegetable compartment 6, dispose ice-making compartment 3, upper strata refrigerating chamber 4 and the lower floor's refrigerating chamber 5 below 0 ℃ that separate with these two chamber thermal insulation as the refrigerating chamber of cryogenic temperature band (for example, approximately-20 ℃～-18 ℃ temperature band).As shown in Figure 2, utilize next door k1, k2, k3 to divide each storeroom of configuration respectively.

In addition, in refrigerating chamber 2, be provided with pressure-reducing chamber 13.In the present embodiment, pressure-reducing chamber 13 is cooling chambers, is the storeroom of general 1 ℃ temperature band.

Refrigerating chamber 2 side forwardly has refrigerating-chamber door 2a, the 2b of the opposite opened (so-called French) of dividing right and left.Ice-making compartment 3, upper strata refrigerating chamber 4, lower floor's refrigerating chamber 5 and vegetable compartment 6 have ice-making compartment door 3a, upper strata refrigerating chamber door 4a, the refrigerating chamber door 5a of lower floor and the vegetable compartment door 6a of drawer type respectively.

As shown in Figure 2, utilize in the outer and case of the case of refrigerator 1 by steeping last heat-insulating material (steeping last polyurethane) and be filled into the body of thermal insulating box 10 that forms between interior case 10a and the outer container 10b and separate.

The interior utilization of refrigerator is gone up adiabatic next door 31a refrigerating chamber 2, upper strata refrigerating chamber 4 and ice-making compartment 3 (with reference to Fig. 1, ice-making compartment 3 is not shown in Fig. 2) is separated, and utilizing down, adiabatic next door 31b separates lower floor's refrigerating chamber 5 and vegetable compartment 6.

Have a plurality of pockets 32 (with reference to Fig. 1, Fig. 2) in the case inboard of refrigerating-chamber door 2a, 2b.In addition, refrigerating chamber 2 is provided with a plurality of shelves 37.Utilize shelf 37 vertically refrigerating chamber 2 being divided into a plurality of storage spaces, also in undermost storage space, be provided with cooling chamber 13 as the pressure-reducing chamber.

As shown in Figure 2, upper strata refrigerating chamber 4, lower floor's refrigerating chamber 5 and vegetable compartment 6 door that is respectively equipped with and is contained in the place ahead of storeroom separately is storage container 3b, 4b, 5b, the 6b of one.And, with regard to ice-making compartment door 3a, upper strata refrigerating chamber door 4a, the refrigerating chamber door 5a of lower floor and vegetable compartment door 6a, the not shown handle portion by grasping door separately in face of a layback go out and storage container 3b, 4b, 5b, 6b pulled out.

In addition, pressure-reducing chamber 13 is provided with the pressure-reducing chamber door 16 of switch top opening.

And, under the state of having opened refrigerating- chamber door 2a, 2b, by the handle portion 27 that grasps pressure-reducing chamber door 16 with cover 16 in face of a layback go out, thereby the storage container in pressure-reducing chamber 13 is pulled out.Its details will be in aftermentioned.

In refrigerator main body 1, be linked in sequence by following: the heat of gasification of compressor, condenser, capillary, absorption refrigeration agent as the evaporimeter of cooling source and then be connected to compressor, to be configured for carrying out the freeze cycle (not shown) of above-mentioned freezing and refrigeration.

This evaporimeter as refrigerated source is arranged on the rear of ice-making compartment 3, upper strata refrigerating chamber 4 and lower floor's refrigerating chamber 5, utilizes blowing fan that the cold wind of evaporimeter is delivered to ice-making compartment 3, upper strata refrigerating chamber 4, lower floor's refrigerating chamber 5.In addition, when cold wind reaches refrigerated storage temperature when following, by means of close can switch retaining device cold wind is blowed to refrigerating chamber 2 and vegetable compartment 6 each storeroom.In addition, also has cold wind after being blown into each storeroom 2～6, again by the evaporator cools and the loop structure of blowing.The temperature of regulation is kept in the temperature control that each storeroom 2～6 is undertaken by the control device that has utilized temperature sensor.

Fig. 3 represents along the cutaway view of the B-B line of Fig. 1.Refrigerating-chamber door 2a is that the center rotation is being supported freely with fulcrum S 1.On refrigerating-chamber door 2a, be provided with the door pocket 32 that the semi-transparent resin that is used to put into beverage etc. is shaped to inside side-prominently.Be provided with at the back side of refrigerating-chamber door 2a to utilize and turned round the rotation next door 2a2 that helical spring elastic force and guide swing constitute freely.

This rotation next door 2a2 is at refrigerating-chamber door 2a, when 2b closes (with reference to Fig. 1), prevents that in the position along the refrigerating-chamber door 2a in left side cold air from spilling between refrigerating-chamber door 2a, 2b.On the other hand, it constitutes, and when refrigerating-chamber door 2a opens, does not hinder the user to the swing of the thickness direction (representing with double dot dash line) of refrigerating-chamber door 2a.

In addition, the refrigerating-chamber door 2b on right side is that center swing is being supported freely with fulcrum S2, and portion is provided with the door pocket 32 that the semi-transparent resin that is used to put into beverage etc. is shaped side-prominently within it.

The following describes structure as the pressure-reducing chamber 13 of gas regulation chamber.

Pressure-reducing chamber 13 shown in Figure 3 is to utilize the inner air of vavuum pump 12 suction, with its air pressure also lower than atmospheric pressure that reduces pressure, is the gas regulation chamber of 0.8 air pressure (80kPa) etc. as an example.That is, special air ambient is built in pressure-reducing chamber 13 for the oxidation that prevents food, the freshness of keeping greengrocery etc.

As shown in Figure 2,13 upper surface is provided with rib 14s as projection in the pressure-reducing chamber.Thus, it constitutes, and pressure-reducing chamber 13 and being on it is supported with the state that is provided with suitable gap between shelf 37.13 rear portion is provided with the cold air air entry 19 of refrigerating chamber 2 in the pressure-reducing chamber, by suction pressure-reducing chamber 13 ambient airs cold air is flowed in the direction of arrows, thereby cools off pressure-reducing chamber 13 indirectly.

As shown in Figure 3, it constitutes, and under the state of having closed refrigerating-chamber door 2b, forms the space of being scheduled between the cover 16 in door pocket 32 and the pressure-reducing chamber 13 of refrigerating-chamber door 2b, can not contact mutually.

Fig. 4 is illustrated in refrigerating- chamber door 2a, 2b is opened under the state of the cover 16 of having opened pressure-reducing chamber 13 afterwards again, close the refrigerating-chamber door 2a in left side, the door pocket 32 that is arranged on the refrigerating-chamber door 2a of left side runs into the left end of cover 16, the state that cover 16 has tilted.Under such state and since cover 16 can not be successfully inwards side direction move, thereby refrigerating-chamber door 2a can not close.Therefore, wish only also can not move in parallel obliquely under the situation to the end reinforcing of cover 16.

Fig. 5 is a stereogram of observing the structure in pressure-reducing chamber 13 from oblique front upper place.Pressure-reducing chamber 13 has opening 14r (with reference to Fig. 6) in front, form periphery wall by outline parts 14 and cover 16, these outline parts 14 are to be separated into two-part long roughly rectangular-shaped of flat depth direction that be up and down, and this cover 16 is used for forwards moving to open and close opening 14r with the rear.

That is,, be provided with the cover 16 that opens and closes in order to allow repertory discrepancy pressure-reducing chamber 13.Have, on the outer surface of profile parts 14, linearly or clathrate ground is erect and is provided with the ribs that is used to increase section coefficient and realizes the raising of intensity outside again.In addition, the shape of ribs is not limited to these, realizes that so long as can increase the section coefficient of outline parts 14 enhancer of intensity all can.

Below, the summary shape of outline parts 14 is described.

Use the structure of the external profile parts 14 of Fig. 6 to Fig. 8 to describe.Fig. 6 is a simple stereogram of observing the outline parts from the front upper place.Outline parts 14, are represented with the exploded view that separates up and down for the ease of understanding for lower house 140 and upper shell 141 structure that 142 maintenances hermetic are bonded with each other at the junction surface.Fig. 7 be Fig. 6 the C direction to view.Fig. 8 is the cutaway view along the K-K line of Fig. 6.In addition, Fig. 6, Fig. 7 are for the ease of understanding the shape of outline parts 14, having deleted the skeleton diagram of imaginary expression outline parts 14 of ribs.

The lower house 140 of outline parts 14 (contains acrylonitrile by using ABS, butadiene, cinnamic resin), AS (contains acrylonitrile, cinnamic resin) etc. through ester moulding, thereby 140a faces the wall and meditates in the formation both sides, 140b, underside wall 140c, back face wall 140d and front openings 14r, top opening 140e, the front side edge of the top of front openings 14r and top opening 140e, and form the side walls 140a that has about connecting, the connecting portion 140f of 140b and above in complete all scopes of opening 140e the junction surface 142 of non junction ground setting the two sides opening shape.

The upper shell 141 of outline parts 14 is by using ABS (containing acrylonitrile, butadiene, cinnamic resin), AS (containing acrylonitrile, cinnamic resin) etc. through ester moulding, thereby form and have upper wall 141e, 141a, 141b face the wall and meditate in both sides, back face wall 141d and full week have the shape at junction surface 142, and upper shell 141 forms in the mode that seamlessly covers opening 140e above the lower house 140 in whole scope.

Promptly, it constitutes, side walls 14a is divided into the side walls 140a of lower house 140 and the side walls 141a of upper shell 141, side walls 14b is divided into the side walls 140b of lower house 140 and the side walls 141b of upper shell 141, and back face wall 14D is divided into the back face wall 140d of lower house 140 and the back face wall 141d of upper shell 141.

And, as Fig. 3～shown in Figure 4, outside profile parts 14 left sides face the wall and meditate the rear, outside of 14a be provided with as with the pump connecting portion 14i of the through hole of the connecting portion of vavuum pump 12.

When in 12 pairs of pressure-reducing chambers 13 of vavuum pump, having carried out decompression, because atmosphere outside is pressed the load that has acted on equably on the external profile parts 14 of pressure differential of inner low pressure whole from atmosphere.Because the inside in pressure-reducing chamber 13 is low pressure, thereby the whole direction pressurization of the external profile parts 14 of outside-in of should loading towards compressive strain, if establishing the planar dimension of outline parts 14 is that 300mm, pressure differential are 0.2 atmospheric pressure for for example width 450mm, depth, then Fu He size is the so big load of about 270kgf (about 2700N).

Therefore, the both sides of outline parts 14 face the wall and meditate 14a, 14b, underside wall 14c, back face wall 14d, upper wall 14e outer surface separately need increase section factor and realize the raising of intensity.Therefore, each face of outline parts 14 is not the plane, but is laterally the roughly curved surface shape of crooked highlightedly dome shape.Have again, as Fig. 6 with dotted line schematically shown in, outline parts 14 outer both faced the wall and meditated preferably at depth direction also in all crooked laterally shape of left and right directions.

Outline parts 14 are that opening 14r is in the width shape longer than the size of short transverse.In addition, be to have the roughly circular-arc of height from two side direction central authorities.That is, profile parts 14 is long roughly rectangular-shaped of flat depth direction.Thus, the area of underside wall 14c and upper wall 14e and other both sides face the wall and meditate 14a, 14b, the area of back face wall 14d is compared bigger.When decompression has been carried out in inside, owing to load and area that the pressure differential with atmosphere produces are proportional, thereby, especially need to guarantee the intensity of underside wall 14c and upper wall 14e.At this moment load is owing to be to flatten the load of direction from outside compression outline parts 14 and with it, thereby the face that will bear load makes the shape of protruding laterally, and the spherical shell of dome shape that for example is the part of spheroid has improved intensity.

Fig. 7 be Fig. 6 the C direction to view.As shown in Figure 7, opening 14r is its face the wall and meditate along both sides on every side 14a, 14b, the shape of underside wall 14c and connecting portion 140f.Outline parts 14 any walls are all by circular-arcly constituting of protruding laterally, and the shape that connects with the circular arc of slyness for the bight between each wall is arranged also again.

In addition, near the central authorities of going up bottom of opening 14r opening support portion 14f above the protrusion of the inboard of opening 14r, lower aperture support portion 14g.

When cover 16 described later had been closed, the seal 16p that is arranged on the cover 16 just contacted with the seal contact-making surface 14k pressure as protuberance that is provided with along the edge of opening 14r, to carry out airtight sealing.That is, the seal member as the inhibition gas between the opening 14r of cover 16 and outline parts 14 is moved is provided with seal 16p.

Fig. 8 is the K-K line cutaway view along Fig. 6.That is, the longitudinal profile of expression outline parts 14 describes the height dimension of inner surface.The lower house 140 of outline parts 14 and upper shell 141 are for using the body component through ester moulding such as ABS, AS.The mould of shaping usefulness roughly is divided into the outside mould that forms lower house 140, upper shell 141 outer shape separately, and the interior side mold that forms inner surface, when resin injection in mould and after the cooling, side mold and lower house 140, upper shell 141 taken out from mould respectively in extracting.

Below, the stripping direction and the shape of mould are described.

In the present embodiment, the outside mould of upper shell 141 is if extract to arrow A A direction, and side mold in it is if extract to arrow A B direction, and then the shape that can further protrude to upside for the upper end of ratio open 14r of upper wall 141e for example is the dome shape.

The outside mould of lower house 140 is if extract to arrow B B direction, side mold in it is if extract to arrow B C direction, also has the side mould that the interior side direction opening 14r side (arrow B D direction) of opening 14r is extracted, not but in the scope by the M of inboard die forming then by the side mould, the shape that underside wall 14c can further protrude to downside for the lower end of ratio open 14r, be the dome shape for example, have again, local recess 14w and the such projection of lower guideway 14y can also be set.

The interior side mold of lower house 140 also has the sliding mould that not shown being used to protruded the upper rail 14s of support container 17 usefulness described later to the inside.

Like this, owing to can make the dome shape that upper wall 141e and underside wall 14c protrude laterally, and the size rh of the inner surface height ra ratio open 14r of outline parts 14 is big, thereby need not to make from the thin shape of the front end of opening, the internal volume of outline parts 14 enlarges, and rigidity also improves, thereby comparatively desirable.

Since opening 14r with above be provided with between the opening 140e with lower house 140 for the connecting portion 140f non junction ground formation opening 14r of one and above opening 140e around, thereby can utilize cover 16 and even upper shell 141 to seal opening separately and keep air-tightness.

The shape of divisional plane then, is described.

Below, the shape of upper shell 141 with the junction surface 142 of lower house 140 described.

Upper shell 141 and lower house 140 are made near the connecting portion 140f the upper end of opening 14r neighbouring to back lower place plane inclined towards the central authorities of the short transverse of back face wall 14d, and are provided with junction surface 142 along its divisional plane.Upper shell 141 formations comprise the upper wall 141e that is the dome shape, side walls 141a, 141b, the part of the outline parts 14 of back face wall 141d, this part be for 142 protrusion heights are the shape of 141t from the junction surface, be arranged at around the rib intensity of the load when reducing pressure of being supported of cooperate.

Divisional plane as among Fig. 8 with shown in the chain-dotted line 142b, be the face that approaches level if tilt very little, then from the junction surface little and shape upper shell 141 of 142 protrusion quantitative change be close to plane, thereby less rigid and distortion when reducing pressure increases.

As other form, the shape of divisional plane as Fig. 8 with shown in the double dot dash line 142c, can be straight line and circular arc the combination shape.With regard to this form,, the protrusion amount of upper shell 141 obtains rigidity easily though increasing, but then, have scale error mutually, then be easy to generate the gap because of circular arc is not quite identical if form the arc radius R at both junction surfaces of upper shell 141 and lower house 140.In addition, if the position of upper shell 141 produces skew to the diagram right of Fig. 8, then owing to can generate the gap in the part of the divisional plane 142d that tilts, upper shell 141 is difficult to driving fit with lower house 140.That is, keep air-tightness in order to make junction surface 142 driving fits, need be reaching high accuracy aspect shape, size, upper shell 141 and the lower house 140 mutual alignment relations of the face at junction surface, for being difficult to keep bubble-tight structure.

The present invention as among Fig. 8 with shown in the divisional plane 142a, if with near the rear of divisional plane above opening 140r, tilt in the mode that descends gradually towards the rear and form the plane of substantial middle portion of back face wall of the connection outline parts 14 of back face wall 140d, then upper shell 141 can not become lamellar and can suitably guarantee thickness 141t.Because divisional plane 142a is plane inclined, even thereby its position between upper shell 141 and lower house 140, produced and be offset mutual closed state and also can not change.That is, because the face at junction surface plane each other mutually, thereby precision also reaches easily, also is to keep bubble-tight structure easily even there is the precision of upper shell 141 and the position relation of lower house 140 low again.

If adopt said structure, owing to upper shell 141, lower house 140 can both be used ester moulding, thereby have the effect that can constitute outline parts 14 and so at an easy rate.

Then, hermetically-sealed construction is described.

Below, use as Figure 21 to Figure 24 of the enlarged drawing of the Q portion of Fig. 8 142 upper shell 141 being described with the structure that lower house 140 maintenances hermetic engage at the junction surface.

Figure 21 represents first embodiment, and in Figure 21 (a) expression pressure-reducing chamber 13, be that the inside of outline parts 14 is atmospheric state, Figure 21 (b) is expressed as the state that has reduced pressure.

Hermetically-sealed construction is, it is the seal 146 of the circle that forms of soft material such as the circle silicon rubber that is configured as ring-type that junction surface 142 between upper shell 141 and lower house 140 clips with the section, utilizes the screw 143 will be in screw boss 140g that is provided with on the lower house 140 and the structure that couples together between the screw boss 141g of setting on the upper shell 141.It is chimeric in the mode of pine to be provided with the gap between the screw boss 140g of the screw boss 141g of upper shell 141 and lower house 140, can be supported on movably screw 143 axially, promptly illustrated above-below direction.Screw boss 140g, 141g show greatly uniformly-spaced along divisional plane 142a and are provided with for example about 10～15 in full week.

Under the atmospheric state shown in Figure 21 (a), circle seal 146 is in and is sandwiched between lower house 140 and the upper shell 141, and because of the fastening force of screw 143 makes for example states of about 5% distortion of diameter, complete all scope inner close fittings of 142 at the junction surface and keep air-tightness.

Externally reduce pressure in the inside of profile parts 14 if drive vavuum pump 12, and to make inside and outside pressure differential in lower house 140 and upper shell 141 be 0.2 atmospheric pressure, then as mentioned above lower house 140 and upper shell 141 applied the so big load of about 270kgf (about 2700N) and carried out pressure and contact.This load is applied on the round seal of being clamped by lower house 140 and upper shell 141 146 and crimps onto about 15% of diameter for example, thus the high air-tightness of the pressure differential inside and outside keeping keeping as far as possible.Corresponding with the amount of circle seal 146 flattening deformations, upper shell 141 and lower house 140 near and make gap 144a reduce and become 144a ', generation gap 141b between the boss 141g of the head of screw 143 and upper shell 141.

Figure 22 represents second embodiment, and in Figure 21 (a) expression pressure-reducing chamber 13, be that the inside of outline parts 14 is atmospheric state, Figure 21 (b) is expressed as the state that has reduced pressure.

Different with first embodiment, as shown in figure 22, replace circle seal 146 be periphery central authorities with its cross section have the seal that is configured as ring-type 147 to the roughly quadrangle section shape of the recess 147a that private side falls in be squeezed in between the seal abutting part 140h of lower house 140 protrusions.Even tilt to some extent at lower house 140 and upper shell 141, perhaps under the precision condition of poor of bearing surface, because soft seal 147 strain and can absorb its deviation in recess 147a can seal between lower house 140 and the upper shell 141 reliably.

Externally reduce pressure in the inside of profile parts 14 if drive vavuum pump 12, and then the recess 147a of seal 147 is crushed, and similarly flattens about 15% of thickness for example with circle seal 146, thereby keep keeping as far as possible the air-tightness of inside and outside pressure differential.

Figure 23 represents the 3rd embodiment, its structure is, not with the airtight member as seal, but around upper shell 141,142 be provided with the melt-coating parts 148 that are provided with in complete all scope as rib along the junction surface, make melt-coating part 148 fusions by make lower house 140 and upper shell 141 pressure contact and apply vibration in the direction of arrow with frictional heat, thereby make lower house 140 obtain air-tightness with upper shell 141 deposited being integral.If adopt this structure, just do not need first embodiment and such seal and the screw of second embodiment, can realize outline parts 14 at an easy rate with simple structure.

In the present embodiment, because junction surface 142 is the plane inclined shape, thereby the distribution of the contact pressure of lower house 140 when contacting with upper shell 141 pressure is identical, and then because the frictional heat that is produced when applying vibration also is identical, thereby can carry out deposited reliably and sealing.In addition, melt-coating part 148 also can not be arranged on upper shell 141, and is arranged on the structure on the lower house 140.

As shown in Figure 6, because the thin zone that the connecting portion 140f of lower house 140 is clamped by opening 14r and top opening 140e, thereby intensity is relatively poor.According to the 3rd embodiment, owing to connecting portion 140f by means of melt-coating part 148 with the upper shell 141 deposited one that become, improve the distortion in the time of preventing to reduce pressure and better with the specific strength mutually of connecting portion 140f own.Perhaps, also can utilize binding material, for example the binding material of silicon rubber system bonds between upper shell 141 and the lower house 140 and formation outline parts 14.

Below, illustrative material.

In addition, as the material of outline parts 14, in order to obtain bearing when reduced pressure in inside the intensity of the load that forms because of pressure differential, and the deflection when being reduced in decompression and can compressed container at the food of inside, wish to use the high material of rigidity.As an example,, can enumerate ABS material of having sneaked into glass fibre or carbon fiber and having strengthened etc. as fibrous enhancing packing material.Thus, bending strength is big, and Young's modulus (coefficient of elasticity) is also big, can be applicable to outline parts 14 well.

Shown in Fig. 6, Fig. 7, Fig. 8, Fig. 9, Figure 11 etc., the inboard of the opening 14r of profile parts 14 outside, the back side of opening 14r forwardly be provided with from upper face side 14e protrude to the inside above opening support portion 14f, from the lower aperture support portion 14g that underside wall 14c protrudes to the inside.Have seal bearing surface 14k at the edge of opening 14r, above opening support portion 14f be connected with inclined-plane 14m, lower aperture support portion 14g is connected with inclined-plane 14n.

The relation of cover 16 and opening 14r then, is described.

Below, the relation of cover 16 with opening 14r described.Fig. 9, Figure 11 represent that cover 16 is closed, and the enhancing described later support portion H (representing with chain-dotted line) that is arranged on the cover 16 is inserted into the top opening support portion 14f of outline parts 14, the state between the 14g of lower aperture support portion.Strengthen the interval of support portion H and top opening support portion 14f, lower aperture support portion 14g, promptly the size of the short transverse of opening 14r is bigger slightly than the height dimension that strengthens support portion H.Thus, strengthening support portion H can successfully insert.

At this, if to reducing pressure in the pressure-reducing chamber 13, externally the outer surface of profile parts 14 applies the load that is formed by atmospheric pressure differential, and then outline parts 14 are compressed and the disappearance of above-mentioned gap.So, above opening support portion 14f, lower aperture support portion 14g respectively with the butt up and down that strengthens support portion H.Thus, do not surpass this degree, thereby can prevent the distortion of opening 14r owing to can not be compressed to.

On the other hand, at abutting part, outline parts 14 be subjected to atmospheric compression from the outside and deflection to the inside the time with strengthen support portion H and contact.That is, can not contact equably, contact with outline parts 14, between enhancing support portion H and outline parts 14, be in the state that has produced reaction force F1 but about enhancing support portion H, hold.

At this, above the width of opening support portion 14f be about L2, compare with the opening support portion, the width of the opening 14r in the outside is about L1.So LI and L2 are preferably structure about equally.By such work, make to the scope of the scope of top opening support portion 14f and upper wall 14e respectively the load that forms of applied pressure difference become even about equally.Therefore, can not apply load to specific part concentrated area, above the stress that produces of the scope of opening in opening support portion 14f and its outside become almost equal, the breakage that the load that can prevent to apply repeatedly causes and realize long lifetime and high reliabilityization.

Width for diapire face 14c and lower aperture support portion 14g preferably also is identical size shape.

As mentioned above, except the shape of above-mentioned outline parts 14,14a, 14b also face the wall and meditate in both sides, on underside wall 14c, back face wall 14d, upper wall 14e, top opening support portion 14f, the lower aperture support portion 14g outer surface separately, be provided with the ribs that increases section factor and realize the raising of intensity with settings such as linearity, clathrates, thereby the distortion that opposing is caused by pressure differential is further to guarantee intensity.

Be provided with guide rail 14s, 14s in the inner face side of side walls 140a, the 149b of lower house 140, by means of being arranged on a pair of projection 17g on the food disc 17 described later, the rear end side of 17g supporting food prod dish 17 along the depth direction projection.

Because outline parts 14 are made aforesaid shape, and with the structure of junction surface 142 joints with upper shell 141 with the lower house 140 of ester moulding, thereby can constitute with ester moulding outline parts 14 and designs simplification, in light weight and cheap, can reach the expansion that realizes internal volume simultaneously and the increase of rigidity.

Below, the overall structure in pressure-reducing chamber 13 is described.

Below, the structure and the action in pressure-reducing chamber 13 with above outline parts 14 that illustrated is elaborated.Figure 10 be pressure-reducing chamber 13 shown in Figure 5 the C direction to looking concept map.Figure 11 is the D-D line cutaway view along Figure 10.Figure 12 is the F-F line cutaway view along Figure 10.Figure 13 is the E-E line cutaway view along Figure 11.Figure 14 is the stereogram of pulling down food disc 17 and cover 16, seeing from the A direction of Fig. 5 from outline parts 14.Figure 15 is the stereogram of seeing from the B direction of Fig. 5, and food disc 17 is represented with chain-dotted line and omitted a part.Figure 16 is the stereogram that expression is arranged on the structure of the pinion gear mechanism 15 in the outline parts 14.

Below, food disc is described.

The food disc 17 that is arranged in the outline parts 14 is transparent resin drip moldings such as AS.To shown in Figure 17, it has both sides face the wall and meditate 17a, 17b, underside wall 17c, back face wall 17d and front side wall 17e as Figure 11.

On the front side wall 17e of food disc 17, be formed with: be used to dispose enhancing described later support portion H recess 17f, and along strengthening the 17h of central side walls portion that support portion H connects front side wall 17e and recess 17f.In addition, as Figure 12 and Figure 14, shown in Figure 15, on the 17h of central side walls portion and side walls 17a, 17b, be formed with and be used for food disc 17 is installed to cover 16, and with two couples of mounting jaw 17t1,17t2 of the switch motion of cover 16 interlock, near the back face wall 17d of side walls 17a, 17b, be formed with pair of right and left projection 17g, 17g.Be formed with block 17n in the cover side of recess 17f as protuberance.

These two couples of mounting jaw 17t1,17t2 form lower openings and the semicircle tubular that extends on one side downwards, and engage with cylindrical protrusion 16g1,16g2 on being arranged at cover 16.Thus, food disc 17 is fixed on the cover 16, and makes the on-off action interlock of itself and cover 16.

Therefore, the user can recognize the on-off action that is accompanied by cover 16 and situation in the food disc that is drawn out 17, at an easy rate the food in the food disc 17 is taken out.

On food disc 17, also be provided with the guiding pawl 17t3 of upward opening, the columned projection 16g3 that also is provided with on food disc 17 and guides pawl 17t3 to be provided with accordingly, the structure that food disc 17 can be pulled down or installed from cover 16 is made in these parts cooperations.Will be for its detailed action in aftermentioned.

Then, guide rail is described.

As Figure 14 and shown in Figure 15, food disc 17 is made the structure of carrying out on-off action mutually each other integratedly with cover 16.

On the underside wall 17c of food disc 17, be provided with along opening and closing thin and long guiding rib 17j, the 17j that direction is provided with, be provided with guide protrusion 14t, the 14t that is used for the above-mentioned guiding rib 17j of mounting, 17j outside near the opening 14r of the underside wall 14c of profile parts 14.Back side in food disc 17 bottom surfaces is provided with the block 17m as step.Block 17m sliding freely mounting on lower guideway 14y set on outline parts 14 bottom surfaces.

At food disc 17 near opening 14r one side, cover 16 1 sides just, guiding rib 17j is positioned on the guide protrusion 14t, near the upper surface that is arranged on projection 17g, the 17g back of food disc 17 is supported by the lower side of guide rail 14s, 14s.On lower guideway 14y, be provided with block 14v as step.When with cover 16 and food disc 17 as one and when opening, then block 17m runs at fully open position and block 14v, their position is limited it is not opened to above this fully open position.

Owing to adopting said structure that food disc 17 and cover 16 are become one and with its direction (left and right directions of the paper of Figure 11, the vertical direction of the paper of Figure 13) guiding forwards, backwards.

Below, the rack pinion of bottom surface is described.

Below the underside wall 17c of food disc 17, promptly in underside wall 14c one side in the face of outline parts 14, left and right symmetrically is kept at a distance mutually and is provided with the tooth bar 17k of two row as linear gear on above-mentioned fore-and-aft direction.

Outside on the underside wall 14c of profile parts 14, rotation is being supported pinion gear mechanism shown in Figure 16 15 with axle freely in the underside recess 14w that is provided with abreast with opening 14r.Pinion gear mechanism 15 utilizes connecting axle 15b to be formed by connecting to be one mutually, and has the pair of right and left pinion 15a of rotation and further protrude in the fulcrum 15c in the pinion 15a outside.

The underside recess 14w of outline parts 14 makes the roughly semicircle tubular bigger than the diameter of above-mentioned pinion 15a, and the two ends, the left and right sides of underside recess 14w become the chimeric freely support recess 14x that the fulcrum 15c of pinion gear mechanism 15 is arranged of rotation.Because pinion gear mechanism 15 only drops into the underside recess 14w from the top, thereby it is for lifting the structure that just can pull down as long as food disc 17 is pulled out the back upward with pointing to pinch, for example, when even underside recess 14w or pinion gear mechanism 15 are made dirty, also can simply pull down and clear away or clean.

In the time of in food disc 17 is configured in outline parts 14, it is configured in tooth bar 17k that is arranged on the food disc 17 and the pinion 15a position engaged that is arranged at the underside recess 14w inside of outline parts 14.But tooth bar 17k opens and closes in the four corner that moves with pinion 15a engagement at cover 16 and food disc 17, is not provided with tooth bar 17k in the distance of the position that distance cover 16 and food disc 17 are closed fully is the scope of L1.Will be in aftermentioned for this effect with effect.

A pair of tooth bar 17k forms on the food disc 17 integratedly, a pair of pinion 15a is the structure of one rotation, because food disc 17 moves hour rack and pinion continuation engagement linkage at fore-and-aft direction, thereby its structure is that cover 16 always moves in parallel to opening 14r.That is, even be not at the central portion of cover 16 but apply power in the end, cover 16 and even food disc 17 can not tilt, and can keeping parallelism move in stable conditionly.

According to said structure, do not need to be provided with especially track segment for cover 16 and food disc 17 front and back are moved with opening and closing, can with easy Stability Analysis of Structures make cover 16 and food disc 17 carry out on-off action.

Figure 17 is that expression makes the cutaway view of cover 16 for the pressure-reducing chamber 13 of the process of full-gear.

Figure 18 is the cutaway view in pressure-reducing chamber 13 of the full-gear of expression cover 16.

Figure 19 is the stereogram of the full-gear of the expression cover 16 identical with Figure 18.

Below, the structure of cover 16 is described.

Cover 16 as shown in Figure 5, switch knob 26 supports freely around the set fulcrum 16s of cover 16 dual-sides rotation.In addition, on cover 16, be provided with pressure differential shown in Figure 14 and eliminate valve V.

The user controls opening and closing operations and the locking of cover 16 when closing that this switch knob 26 carries out cover 16, and carries out the switching that pressure differential is eliminated valve V.

In addition, when utilizing 12 pairs of pressure-reducing chambers 13 of vavuum pump to reduce pressure, by the atmosphere outside pressure in pressure-reducing chamber 13 and the pressure differential of inside between post-decompression pressure in pressure-reducing chamber 13 load that cover 16 applies is increased, therefore, in order directly to open cover 16, the user needs sizable power.

So, eliminate valve V the interior or exterior space of cover 16 is communicated with by opening pressure differential, thereby can eliminate the difference of external and internal pressure and remove the load that brings by pressure differential, can easily open cover 16.

Cover 16 when closing, is provided with the seal 16p of elastomeric material as shown in figure 11 in the inner periphery portion with outline parts 14 butts.Sealing part 16p carries out the sealing between outline parts 14 and the cover 16.

Seal 16p is configured as the ring-type of the recess 16p1 that periphery mediad private side with its cross section falls in as shown in figure 17.When cover 16 relative outline parts 14 were closed a little obliquely, seal 16p can flexibly carry out strain in recess 16p1, can absorb this skew and sealed reliably between outline parts 14 and the cover 16.In addition, seal 16p also can not be arranged on the cover 16 and be arranged on outline parts 14 sides.

As shown in Figure 5, cover 16 is with ester moulding left and right end portions 16h such as opaque ABS, with transparent ester moulding central portion 16c2 such as AS, so that can recognize the food that is stored in the pressure-reducing chamber 13.

The 16c1 of dual-side portion, the 16c1 of the central portion 16c2 of cover 16 are as shown in Figure 5, with switch knob 26 when cover 16 rotates, space between switch knob 26 and the cover 16 forms basically the circular-arc track that moves along the barred body 27 of switch knob 26 and outstanding laterally shape, thereby making distance between the rotary motion trace of barred body 27 of the 16c1 of dual-side portion, the 16c1 of cover 16 and switch knob 26 below setting, for example is below the 7mm.

The central portion a of cover 16 as shown in figure 11, its exterior side enters in front of the user, in addition, for the handle operation portion 36 that makes switch knob 26 has the space that occupies, forms the shape that falls in to private side.

In addition, as shown in figure 11, be formed with the enhancing support portion H as the support portion up and down of front openings of outstanding to the inside shape at the private side of the central portion 16c2 of cover 16.

Figure 20 is the horizontal cross along the G-G direction of Figure 10.

The enhancing support portion H of cover 16 such as Figure 14 are arranged on the middle position that leans at cover 16 back sides to shown in Figure 20.Strengthen support portion H and be formed with periphery upper wall surface H1, periphery lower wall surface H2, the two side walls H3 that is erected to be arranged at private side continuously, direction has been formed extended at both sides a plurality of enhancing rib hr up and down between periphery upper wall surface H1, periphery lower wall surface H2.

In addition, on the outer surface of the two side walls H3 of the enhancing support portion of cover 16 H, be formed with columned jut 16g1,16g2, the 16g3 that is used for fixing cover 16 and food disc 17.

A pair of mounting jaw 17t1, the 17t2 (with reference to Figure 14, Figure 15) of food disc 17 are engaged with this jut 16g1,16g2, food disc 17 is pulled out to the outside with the switch motion interlock of cover 16, for being easy to recognize, the user food in the food disc 17 is easy to structure with its taking-up.

As before having illustrated, when reducing pressure, utilize the atmosphere outside pressure and the external profile parts 14 of pressure differential of the low pressure of inside to apply load with vavuum pump 12.

As shown in figure 11, when having closed cover 16, it constitutes, the top opening support portion 14f and the lower aperture support portion 14g butt of the outline parts 14 in the enhancing support portion H of the private side of cover 16 and the pressure-reducing chamber 13, to support since pressure-reducing chamber 13 atmosphere outside press with pressure-reducing chamber 13 in low pressure pressure differential from the upper wall 141e of the external profile parts 14 in top and above opening support portion 14f apply load, and the load that the underside wall 14c of external profile parts 14 and lower aperture support portion 14g applied pressure difference form from the below, thereby suppress the distortion in the pressure-reducing chamber 13 that causes because of these loads.

In addition, as Figure 10, shown in Figure 11, the pressure differential of passing in the pressure-reducing chamber 13 that is provided with pressure differential elimination valve V at the central portion 16c2 of cover 16 is eliminated hole 16a.

And, as shown in figure 11, on cover 16, being provided with threshold switch parts 35 freely around fulcrum 35s rotation, these threshold switch parts 35 have and open and close the valve body 35t that is made of the rubber with elastic property and flexibility etc. that pressure differential is eliminated valve V.

At this, the fulcrum 16s (with reference to Fig. 5, Figure 11) that fulcrum 35s that threshold switch parts 35 rotate and switch knob 26 rotate constitutes with one heart, and its switching manipulation that is constructed such that switch knob 26 is by means of the switch motion interlock of threshold switch parts 35 with valve body 35t.

Below, the structure of switch knob 26 is described.

Shown in Fig. 5, Figure 11, Figure 17, Figure 18 etc., switch knob 26 has: the barred body 27 that is made of aluminium bar; Fix the metal support portion 28,29 of an end respectively at the two ends, the left and right sides of this barred body 27; And barred body 27 passes the handle operation portion 36 that central portion is used for the operation of handle.

Central portion is supported freely around the left and right sides of cover 16 fulcrum 16s, 16s rotation respectively in the support portion, the left and right sides 28,29 of switch knob 26, changes in the other end and supports deflector roll 28r, 29r freely.

As shown in figure 11, switch knob 26 supports freely around fulcrum 16s, the 16s of the left and right sides of cover 16 sidepiece rotation, in the occasion that barred body 27 is positioned at around the foot of the rotary motion trace of left and right sides fulcrum 16s, 16s is with switch knob 26 closing cap parts 16 and the state of locking, on the other hand, as shown in figure 17, make barred body 27 be positioned at the state that occasion above the rotary motion trace of left and right sides fulcrum 16s, 16s is in the locking of the cover 16 that releasing undertaken by switch knob 26.

Deflector roll 28r, the 29r of the support portion, the left and right sides 28,29 of switch knob 26 is embedded into the side walls 14a, the cover lock on the 14b that are arranged at 13 both sides, pressure-reducing chamber respectively accordingly to be decided in the guiding groove member 30,30, carries out the locking of the cover 16 that undertaken by switch knob 26.

Figure 24, Figure 25, Figure 26 represent that the support portion 28 of the cover 16 in pressure-reducing chamber shown in Figure 17 13 and switch knob 26 and cover lock decide the enlarged drawing of the process of the locking switch handle 26 around the guiding groove member 30.

In addition, Figure 24 is the figure that expression utilizes the state that unlocks of the cover 16 that switch knob 26 carries out, and Figure 26 is the figure that expression utilizes the lock-out state of the cover 16 that switch knob 26 carries out, and Figure 25 is that Figure 26 is the figure of the state before expression will lock.

In addition, because that the cover lock in left side decide the structure that guiding groove member 30 and the cover lock on right side decide guiding groove member 30 is identical, thereby only the cover lock on right side is decided guiding groove member 30 and describe, and the explanation of guiding groove member 30 is decided in omission to the cover lock in left side.

As Figure 24, Figure 25, shown in Figure 26, it is members of ester moulding for example that cover lock is decided guiding groove member 30, is used to make deflector roll 28r and side to be seen as curvilinear madial wall guide rail 30a and contacts and guide.

The madial wall guide rail 30a that cover lock is decided guiding groove member 30 sees in the side and forms following shape.

That is, as shown in figure 24, the intersection point 30a1 of the madial wall guide rail 30a of the state that unlocks and the straight line axle center that is connected fulcrum 16s and deflector roll 28r of the cover 16 that utilizes switch knob 26 to carry out is made as c with the size between fulcrum 16s.In addition, as shown in figure 25, the intersection point 30a2 of the madial wall guide rail 30a of before will the locking of the cover 16 that utilizes switch knob 26 to carry out and the straight line axle center that is connected fulcrum 16s and deflector roll 28r is made as b with the size between fulcrum 16s.And, as shown in figure 26, the intersection point 30a3 of the madial wall guide rail 30a of lock-out state and the straight line axle center that is connected fulcrum 16s and deflector roll 28r of the cover 16 that utilizes switch knob 26 to carry out is made as a with the size between fulcrum 16s.

The shape that to see Figure 24, Figure 25, madial wall guide rail 30a shown in Figure 26 in the side forms, the shape that is formed by connecting with the curve that between a, b, c, has following relation, that is:

B (state (Figure 25) before will locking)＞a (lock-out state (Figure 26))＞c (state that unlocks (Figure 24)).

Because the shape that this cover lock is decided the madial wall guide rail 30a of guiding groove member 30, under state before utilizing will the locking of cover 16 that switch knob 26 carries out shown in Figure 25, with the intersection point 30a2 of the madial wall guide rail 30a of the straight line in the axle center that is connected fulcrum 16s and deflector roll 28r with the size b maximum between fulcrum 16s.Thus, as shown in figure 25, the deflector roll 28r of support portion 28 produces and to decide the stronger butt of the madial wall guide rail 30a of guiding groove member 30 with cover lock or reverse.Therefore, the user that the switch knob 26 that is supported by support portion 28 is carried out switching manipulation is to giving cover 16 blocked sensations.That is, form madial wall guide rail 30a in the mode that gives " click clatter " sense back locking.

That is, it constitutes, and the user controls the handle operation portion 36 of switch knob 26, and the state before will the locking of Figure 25 is pressed the handle operation portion 36 of switch knob 26 downwards and the situation of the lock-out state shown in Figure 26 that arrives, according to

The relation of b (will lock before state (Figure 25))＞a (lock-out state (Figure 26)), the deflector roll 28r that has then relaxed the support portion 28 of neutral condition reverses in cover lock is decided the madial wall guide rail 30a of guiding groove member 30, is the degree of powerful butt.Thus, the user gives switch knob 26 enters lock-out state from the state before will locking sensation in the operation of the locking transition of switch knob 26.

Then, when opening cover 16, the user controls the handle operation portion 36 of switch knob 26, via the state before will the locking of Figure 25, lifts switch knob 26 barred bodies 27 upward, to the state that unlocks shown in Figure 24 from the lock-out state of Figure 26.In this case, with the intersection point 30a1 of the madial wall guide rail 30a of the straight line in the axle center that is connected fulcrum 16s and deflector roll 28r with being of a size of c between fulcrum 16s, be in a ratio of minimum with state (with reference to Figure 25), lock-out state (with reference to Figure 26) before will locking.Thus, madial wall guide rail 30a forms, though in case by locking the sensation part of weight before, but can not touch the madial wall guide rail 30a that cover lock is decided guiding groove member 30, and with the lighter operation of feeling to carry out switch knob 26 at deflector roll 28r from the state of Figure 25 to support portion 28 between the open mode of Figure 24.

The function of the handle part when the handle operation portion 36 of switch knob 26 (with reference to Figure 11, Figure 17) has user's console switch handle 26 and guide pressure difference are eliminated the function of the switching of valve V.That is, make the action interlock of the open and close valve of the switching manipulation undertaken by the rotation of switch knob 26 and valve body 35t by means of threshold switch parts 35.As shown in figure 11, then valve body 35t closes when switch knob 26 is closed, and then valve body 35t opens when switch knob 26 makes progress rotating opening as shown in figure 17.

Under the situation that valve has been opened, shown in the arrow of Figure 17, enter in the pressure-reducing chamber 13 that has been depressurized owing to the pressure differential atmosphere outside and to have eliminated pressure differentials, when opening cover 16,, can successfully open cover 16 just not by the formed load of pressure differential that is applied on the cover 16.

After closing this cover 16, for example push not shown console switch the user, perhaps closing cold room door 2a, 2b and open after the not shown door switch etc. begin the running of vavuum pump 12 again, begin the air in the pressure-reducing chamber 13 are aspirated and reduce pressure.

When beginning to reduce pressure and since atmospheric pressure with the pressure differential of inner low pressure from outside pressing cover parts 16, seal 16p is subjected to surpassing pushing of the power of utilizing the handle locking with respect to outline parts 14.The recess 16p1 driving fit of seal 16p and be in state shown in Figure 11, the big load that forms owing to the pressure differential of atmospheric pressure and inner low pressure produces the big surface pressing that seal 16p is flattened, thereby better tightness, can keep inner negative pressure.

According to above structure, to reduce pressure by driving vavuum pump 12, the inside that makes pressure-reducing chamber 13 is negative pressure, and can keep negative pressure.At this, by forming the outline parts 14 in pressure-reducing chamber 13 and can make cheap structure with plastic material.Have again,, can guarantee intensity again thereby can enlarge the dibit volume by outline parts 14 being made the two-part structure up and down that is divided into the bubble-tight mode combination of mutual maintenance.In addition, because the part beyond the opening 14r of front is sealed, thereby, can keep the sealing in whole pressure-reducing chamber 13 well by utilizing seal 16p only between seal cover parts 16 and the opening 14r.

Below, the dismounting of food disc is described.

Food disc 17 dirty the time etc. cover 16 and food disc 17 to be pulled down and clean etc.Below, use Figure 27 to Figure 29 that the installing/dismounting of cover 16 and food disc 17 is described.

Figure 27 is the cutaway view along the D-D line when pulling down food disc 17 and cover 16, Figure 28 is the approximate vertical view that the position of the engagement of explanation tooth bar and pinion and outline parts and food disc concerns, Figure 29 is the cutaway view along the D-D line of representing cover 16 and the state of food disc 17 in switching process.

If the action when using Figure 27 explanation to pull down food disc 17 and cover 16, then make food disc 17 and cover 16 be fully open position as shown in figure 18, under this state, make its inclination if the front end of cover 16 lifted, then owing to the block 17m that is arranged on food disc 17 bottom surfaces throws off from the block 14v that is arranged on outline parts 14 bottom surfaces, thereby as long as (among Figure 27 illustrated upper left side to) moves sideling to nearby with this state, what food disc 17 and cover 16 just can become one pulls out.Just can install as long as carry out the action opposite with it, by making tooth bar 17k and pinion 15a engagement, and under this state with cover 16 inwards side direction shift the end always onto and just can close.

But, when carrying out this action, because the situation that exists tooth bar 17k and pinion 15a to fail correctly to mesh, thereby use Figure 28 that this problem is described.Figure 28 is the sketch of the relation of expression outline parts 14, food disc 17, cover 16, tooth bar 17k and pinion 15a, is the vertical view identical with Figure 20.Food disc 17 that Figure 28 (a) expression will be pulled down for the time being and cover 16 are arranged on the state on the outline parts 14, but expression be have a pair of tooth bar 17k and pinion 15a for example be engaged on about be offset the state that the state of a tooth meshes down.For example the modulus of tooth bar and pinion is 1.5, then owing to side-play amount is that the amount of a pitch of tooth is about 4.7mm.Like this, as Figure 28 (b) if close for the time being cover 16 under the state of skew engagement, then owing to cover 16 moves with the state that tilts with respect to opening 14r, thereby, if tooth bar 17k and all ingear state of pinion 15a before close fully, then cover 16 be in inclination state and can not airtight opening 14r.

Therefore, shown in Figure 28 (c), if do not make and in the gamut that opens and closes, tooth bar 17k be set, the engagement of tooth bar 17k and pinion 15a is thrown off, then irrelevant with the engagement of tooth bar 17k and pinion 15a, the seal 16p of cover 16 similarly contacts and can seal reliably with opening 14r when closing fully.In other words, in Figure 28 (c),, the distance from the opening 14r of outline parts 14 to tooth bar 17k is made as Lr, and makes (Lp＜Lr) get final product as long as the distance from the opening 14r of outline parts 14 to pinion is made as Lp.

Below, the length of tooth bar is described.

And then, utilize Figure 29 that scope that tooth bar 17k is set and cover 16 method for dismounting with food disc 17 is described.Pinion gear mechanism 15 is arranged on the underside recess 14w set on the lower house 140 of outline parts 14.The situation that the water droplet that for example exists profile parts 14 inwalls outside to condense on this underside recess 14w is detained and freezes.Because pinion gear mechanism 15 can not rotate when freezing, therefore produce tooth bar 17k and pinion 15a and mesh the problem that then cover 16 and food disc 17 are not opened with regard to being in closing state.

Even utilizing Figure 29 that pinion gear mechanism 15 is not rotated the structure that yet can open cover 16 and food disc 17 describes.With illustrated by Figure 28 identical, because tooth bar 17k does not mesh with pinion 15a near the complete closed position of cover 16, even thereby under pinion gear mechanism 15 non-rotary states, meet pinion 15a up to the tooth of tooth bar 17k, cover 16 is also opened integratedly with food disc 17.

Under this state, formation gap gap between the inclined-plane 14m of the periphery upper wall surface H1 that strengthens support portion H and opening support portion 14f above the outline parts 14.So big (gap＞hg) is not even then pinion 15a rotates, while owing to can lift cover 16 and move to the diagram left, thereby still can take out cover 16 and food disc 17 if this gap gap is than the engagement of tooth height hg.Then, the user takes out frozen pinion 15a from opening 14r, perhaps wipe the ice that accumulates on the underside recess 14w off.

In Figure 29, the amount that cover 16 is opened is depicted as (Lr-Lp) according to Figure 28 (c), thereby under this state, is preferably as shown in figure 29 gap gap of generation (＞hg) position relation.

Below, the tooth bar engagement is described.

As before having illustrated, cover 16 does not mesh with pinion 15a at the position tooth bar 17k that closes, and is the structure that meshes in the process of opening.Therefore, when opening cover 16, need the tooth of tooth bar and pinion 15a not hang up and engagement successfully.Utilize Figure 30 and Figure 31 that its structure is described.

Figure 30 and Figure 31 are the sketches of the engagement of expression tooth bar 17k and pinion 15a.Tooth bar 17k moves and meshes with pinion 15a from illustrated right left along with the opening action of cover 16 and food disc 17 as shown by arrows.The tooth top of pinion 15a is made and is made profile of tooth become the roughly shape of point to positive direction displacement etc.

Tooth bar, pinion at Figure 30 all are that the profile of tooth of tooth bar is trapezoidal under the situation of the general involute profile of using.In Figure 30, the angle of having represented the tooth of pinion 15a is the situation that the front end of θ 1 hour rack 17k contacts with the tooth top of pinion 15a.The contact each other of this front end is unsettled, both may pinion be pushed by tooth bar 17k and to the diagram counter rotation, sometimes also not engagement and flicked and with the tooth engagement of adjacency.

Because the profile of tooth of tooth bar 17k is trapezoidal, thereby rack tooth top end face 17k1 is the plane.Thereby when the engagement failure, when rack tooth top end face 17k1 went up across pinion 15a, then the maximum of the amount of stepping up was the height d1 to the periphery summit of pinion 15a.

Figure 30 (b) is that the angle of the tooth of pinion 15a is the situation of θ 2 (＜θ 1), and this situation is that tooth bar 17k contacts at contact point 15d2 with pinion 15a, and pinion 15a is pushed by tooth bar 17k and rotates, and pinion 15a begins successfully to counter rotation.

Figure 30 (c) is that the angle of the tooth of pinion 15a is the situation of θ 3 (＞θ 1), and this situation is that tooth bar 17k contacts at contact point 15d3 with pinion 15a, and pinion 15a is pushed by tooth bar 17k and rotates, and pinion 15a begins successfully to counter rotation.

Figure 31 is the engagement situation of the tooth bar shape that has of the present invention, and trapezoidal toothed a part of 17k0 on tooth bar top is removed, and will make the tooth 17k2 of highly low triangle with the tooth of the initial butt of pinion 15a.

In Figure 31 (a), be 1 ' time of θ in the angle of the tooth of pinion 15a, the front end of the triangle tooth 17k2 of tooth bar 17k contacts with the tooth top of pinion 15a.Though at this moment front end also contacts with each other, because the front end of the front end of pinion 15a and triangle tooth 17k2 point all, be not easy to step up and avoid mutually easily and engagement smoothly.

Because the height of triangle tooth 17k2 is low, if Figure 30 (a) and Figure 31 (a) are compared, even triangle tooth 17k2 on pinion 15a since the amount of stepping up little to the height d2 on the periphery summit of pinion 15a (＜d1), thereby engagement smoothly.

Figure 31 (b) is that the angle of the tooth of pinion 15a is the situation of θ 2 ' (＜θ 1 '), this situation is that triangle tooth 17k2 contacts at contact point 15d2 ' with pinion 15a, pinion 15a is meshed by triangle tooth 17k2 pushing, and pinion 15a begins successfully to counter rotation.

Figure 31 (c) is that the angle of the tooth of pinion 15a is the situation of θ 3 ' (＞θ 1 '), this situation is that triangle tooth 17k2 contacts at contact point 15d3 ' with pinion 15a, pinion 15a is meshed by triangle tooth 17k2 pushing, and pinion 15a begins successfully to counter rotation.

As described above, mesh when closing fully by a pair of pinion 15a that makes on a pair of tooth bar 17k that makes on the bottom surface that is arranged on food disc 17 and the bottom surface that is arranged on outline parts 14, but the structure that from the process of opening, begins to mesh, because when cover 16 is closed, tooth bar and pinion do not mesh, and cover 16 is similar and sealed with opening 14r, thereby sealed open 14r and keep air-tightness reliably.Cover 16 can reliably move in parallel when switch.Have again, by having the effect that can successfully mesh, successfully carry out switch motion with the tooth 17k2 that the tooth of the tooth bar 17k of the initial butt of pinion 15a is made highly low triangle.

And then, even also have under the situation that pinion gear mechanism 15 has freezed, also can be with the effect of food disc 17 and cover 16 dismountings.

To shown in Figure 15, cover 16 is switching integratedly with food disc 17 as Figure 14.In addition as mentioned above, because food disc 17 is can be from the structure of cover 16 dismounting, thereby use Figure 32 to Figure 41 to be described in detail to constituting this structure.Figure 32 is a partial sectional view of representing the state on the food disc 17 that cover 16 is installed in, and Figure 33 to Figure 35 is the partial sectional view of expression from the action of food disc 17 dismounting covers 16.Figure 36 to Figure 40 is that expression is installed in the partial sectional view of the action on the food disc 17 with cover 16, and to be expression be installed in state on the food disc 17 with cover to Figure 41.

In Figure 32, as before having illustrated, on the front side wall 17e of food disc 17, be formed with: be used to dispose the 17h of central side walls portion that strengthens support portion H recess 17f and connect front side wall 17e and recess 17f along enhancing support portion H.In addition,, on the 17h of central side walls portion and side walls 17a, 17b, be formed with and be used for food disc 17 is installed to cover 16 as Figure 12 and Figure 14, shown in Figure 15, and with two couples of mounting jaw 17t1,17t2 of the switch motion interlock of cover 16.

These two couples of mounting jaw 17t1,17t2 were as before having illustrated, form lower openings the semicircle tubular and the shape of extending downwards on one side, and engage and food disc 17 is fixed on the cover 16, and make the switch motion interlock of itself and cover 16 with cylindrical protrusion 16g1,16g2 on being arranged at cover 16.Have again, the mounting jaw 17t3 that has been provided with upward opening on the top of mounting jaw 17t2, columned projection 16g3 is arranged on apart from the top of the amount of the bottom surface 17t4 preset distance U of mounting jaw 17t3.

Fastening rib 16j extends to the recess 17f of food disc 17 along continuous straight runs from the central portion 16c2 of cover 16, block 17n extends to cover 16 along continuous straight runs from the recess 17f of food disc 17, forms the chimeric position relation of lower surface of upper surface and the fastening rib 16j of block 17n.Owing to make cover 16 locked and can not move with respect to food disc 17 downwards by fastening rib 16j and block 17n chimeric, thereby food disc 17 and cover 16 are as Figure 14 shown in Figure 15 being fixed extremely.

Below, the action from food disc 17 dismounting covers 16 is described.

As shown in figure 33, when when the direction of arrow 18 was afterburning, recess 17f partly was out of shape, the comes out of engagement of block 17n and fastening rib 16j with the central authorities upper end of pointing the recess 17f part of hooking food disc 17.So, cover 16 just do not have to support and the amount of columned projection 16g3 dropping distance U as shown in arrow 20 up to the bottom surface 17t4 butt of mounting jaw 17t3, columned projection 16g1,16g2 just throw off from mounting jaw 17t1,17t2.At this, with regard to cover 16, support, thereby cover 16 can not thrown off and unexpected falling from food disc 17 because projection 16g3 is mounted the bottom surface 17t4 of pawl 17t3.

Subsequently, as shown in figure 34, if make cover 16 clockwise direction rotation as shown by arrows, then cover 16 rotate around columned projection 16g3, follows as shown in figure 35, can be by being moved upward with cover 16 from food disc 17 from pulling down.

Below, use Figure 36 to Figure 41 that an example of erection sequence is described.

As shown in figure 36, the face that seal 16p is housed of cover 16 is descended with downward approximate horizontal state towards food disc 17, as shown in figure 37, the periphery upper wall surface H1 that strengthens support portion H is hooked on the upper end 17f1 of the recess 17f of food disc 17.At this, since make from upper end 17f1 to projection 16g3 apart from r1 and size r2 structure about equally from mounting jaw 17t3 to upper end 17f1, thereby as shown in figure 38, if then with upper end 17f1 be the center make cover 16 along the direction of arrow to counter rotation, then as shown in figure 39, projection 16g3 is imported in the groove of mounting jaw 17t3.If with near the width mounting jaw 17t3 top be beforehand with broad, the guiding when then becoming projection 16g3 and being imported into and make action more smooth is comparatively suitable.

Then, Figure 40 represents is to make cover 16 reach the state of vertical direction around counter rotation up to cover 16 along the direction of arrow around projection 16g3, is that projection 16g3 with cover 16 is positioned in the state on the bottom surface 17t4 of mounting jaw 17t3.Then as shown in figure 41, if from the below cover 16 is moved to arrow 21, then projection 16g1,16g2 are chimeric with mounting jaw 17t1,17t2 respectively.When block inclined-plane 17p was pushed by fastening rib 16j, after recess 17f pressed the 17f ' deflection shown in the dotted line for the time being, the upper surface of block 17n was in the position relation chimeric with the lower surface of fastening rib 16j by elastic reset.The state of this Figure 41 is identical with Figure 32, and the Figure 14 that interfixes for cover 16 and food disc 17 is to state shown in Figure 15.

Owing to adopt said structure, can only food disc 17 be pulled down, install simply, thereby for example can provide can be easily only 17 that clean to food disc, refrigerator that ease of use is good.

According to the present invention, be divided into up and down two-part resin molded part and keep bubble-tight hermetically-sealed construction mutually by outline parts 14 are made, thereby the inside with outline parts can not be defined as from the shape of opening taper and enlarge volume, and then can guarantee the effect of intensity by making the dome shape that protrudes laterally.

The present invention as among Fig. 8 with shown in the divisional plane 142a, if with near the rear of divisional plane above opening 140r, tilt in the mode that descends gradually towards the rear and form the plane of substantial middle portion of back face wall of the connection outline parts 14 of back face wall 140d, then upper shell 141 can not become lamellar and can suitably guarantee thickness 141t.Because divisional plane 142a is plane inclined, even thereby the position between upper shell 141 and the lower house 140 produced skew, mutual closed state can not change yet.That is, because the face at junction surface plane each other mutually, thereby precision also reaches easily, also is to keep bubble-tight structure easily even there is the precision of upper shell 141 and the position relation of lower house 140 low again.

According to said structure, owing to upper shell 141, lower house 140 can both be used ester moulding, thereby have the effect that can constitute outline parts 14 at an easy rate.

Have again,, and make its designs simplification and lightweight because outline parts 14 are made of resin molded part, thereby can constitute pressure-reducing chamber 13 at an easy rate.

Undertaken depositedly when especially sealing by connecting portion, thereby do not need seal member such as rubber seal upper shell 141 and lower house 140 keeping air-tightness, can improve reliability and for more cheap structure preferable.

Because cover and food disc are made the structure of carrying out switch with interfixing, and make the structure of the chimeric a pair of pinion of the tooth bar that makes on the bottom surface that is arranged at food disc and the recess on the inside bottom surface that is arranged at the outline parts, thereby do not need to be provided with especially seal member etc. for moving of making that cover 16 and food disc 17 front and back open and close, have again, do not need to be provided with parts such as fulcrum in order to support pinion yet, have and to make cover 16 and food disc 17 stably carry out the effect of switch motion in parallel with easy structure with axle.

Because by making the not engagement when closing fully of a pair of pinion 15a on a pair of tooth bar 17k that makes on the bottom surface that is arranged at food disc 17 and the bottom surface that is arranged at outline parts 14, and the structure that from opening procedure, meshes, thereby do not mesh at complete closing cap parts 16 hour racks and pinion, cover 16 and opening 14r driving fit similarly, thereby, can make opening 14r airtight reliably and keep air-tightness.In addition, can when opening and closing, make cover 16 keeping parallelisms and stably move.Have again,, can successfully mesh thereby have by making highly low triangle tooth 17k2 with the tooth of the tooth bar 17k of the initial butt of pinion 15a, and switch motion effect smoothly

Have again owing to make and closing cover 16 and food disc 17 hour racks and the out of mesh structure of pinion, even thereby under the situation that pinion gear mechanism 15 freezes, also can dismantle food disc 17 and cover 16.

Have again, owing to can only dismantle, install food disc from cover simply, thereby a for example easy water cleaning food dish, the good refrigerator of ease of use can be provided.

Claims (5)

1. a refrigerator possesses: the storeroom with first opening that makes repertory discrepancy; Open and close the cover of above-mentioned first opening; And be arranged between above-mentioned first opening of above-mentioned cover and this cover butt and suppress the seal member that moves of the gas between above-mentioned cover and above-mentioned first opening, it is characterized in that,

Possess the first outline parts and the second outline parts,

That the above-mentioned first outline parts have is top, following, left and right sides face and with the relative back of above-mentioned first opening, and formed second opening on top,

The above-mentioned second outline parts seal above-mentioned second opening,

Above-mentioned second opening is formed obliquely in the above-mentioned back side of the above-mentioned first outline parts mode than the above-mentioned first open side step-down.

2. refrigerator according to claim 1 is characterized in that,

The section of above-mentioned second opening portion is the inclined plane.

3. refrigerator according to claim 1 and 2 is characterized in that,

The periphery of above-mentioned second opening has seal member, so that suppress the moving of gas between above-mentioned first outline parts and the above-mentioned second outline parts.

4. refrigerator according to claim 1 and 2 is characterized in that,

The above-mentioned first outline parts are contacted, so that suppress moving of gas with pressure with the part that the above-mentioned second outline parts join.

5. according to each described refrigerator in the claim 1～4, it is characterized in that,

With above the above-mentioned first outline parts above-mentioned, above-mentioned below, above-mentioned left and right sides face and above-mentioned back make the dome shape that protrudes laterally respectively.

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