JPH10122729A - Double-swinging type refrigerator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve durability of sealing members by suppressing wear of the members due to sliding contact at opposed suction surfaces of the members at an end face side at the time of swinging swingable doors. SOLUTION: Sealing members 22, 25 having sealing parts 22a, 25a being expandable and contractible and containing magnets 22c, 25c are employed as the members disposed on end faces of swingable doors 12, 13, and the members 22, 25 are mounted oscillatorily in swinging direction of doors at end face sides of the doors 12, 13. Thus, at the time of swinging the doors 12, 13, the suction surfaces of the parts 25a, 25b of both the members 22, 25 are inclined to suppress sliding contacts at the time of sucking or releasing.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a double door type refrigerator having a pair of left and right opening doors.

[0002]

2. Description of the Related Art A double door refrigerator is attached to each of left and right side edges of a refrigerator main body having a front opening so as to be rotatable in a front-rear direction at a base end and opens and closes a front opening of the refrigerator main body. A pair of left and right open / close doors, and when both of the open / close doors are closed, a flexible seal member disposed along a peripheral portion of the back surface on the back side of the open / close doors is provided at the front opening of the storage body. A flexible sealing member disposed along the distal end surfaces of the opening and closing doors at the opposing distal end surfaces of the opening and closing doors is brought into contact with each other to seal the storage body. Is configured.

[0003] However, in a double door refrigerator,
As disclosed in Japanese Patent Application Laid-Open No. 58-153072, at least each seal member (hereinafter, the seal member may be referred to as a front end seal member) provided at least on the front end side of each door. A seal member accommodating a magnet is adopted, and when the respective opening / closing doors are closed, the opposing surfaces of these seal members are configured to be attracted and adhered by the magnetic force of the magnet. I have.

[0004]

By the way, in the conventional double-door type refrigerator of this type, the distal end side seal members are configured to be brought into close contact with each other in a compressed state. Is formed to have a certain degree of rigidity.

Therefore, when the opening / closing door is closed, the opposing surfaces of the front end sealing members are gradually attracted to each other in a state of sliding contact with each other, and when the opening / closing door is open, the opposing surfaces of the front end sealing members are in sliding contact with each other. In such a state, the gaps gradually separate, and the opposing surfaces of the respective front end surface side seal members are worn, and the durability is reduced. Also, when both doors are closed,
Since the tip side seal member needs to be tightly contacted in a compressed state,
The projecting length of each front end side seal member toward the front end side must be accurately formed, and each front end side seal member must be accurately attached to the front end side of each door. Accordingly, it is an object of the present invention to address these issues.

[0006]

SUMMARY OF THE INVENTION The present invention relates to a double door type refrigerator, and more particularly, to a refrigerator main body having a front opening, which is attached to each of left and right side edges of a refrigerator main body so as to be rotatable in the front-rear direction at a base end. Equipped with a pair of left and right doors that open and close the front opening of the main body of the warehouse, and when these two doors are closed, a flexible arrangement is provided along the periphery of the back on the back side of these doors. The sealing member is brought into contact with the peripheral edge of the front opening of the storage body, and the flexible sealing members disposed along the front end surfaces of the two opening / closing doors at the opposing front end surfaces thereof are brought into contact with each other. It is intended to be applied to a double-door type refrigerator that is in contact with and seals the refrigerator main body.

According to the present invention, in the double-door type refrigerator of the above-mentioned type, as each seal member disposed on the front end surface of each of the opening and closing doors, an extensible seal member in which a magnet is housed is used. The seal member is attached to the front end surface of each of the doors so as to be swingable in the opening and closing directions of the door.

In the double-door refrigerator according to the present invention, each of the sealing members is constituted by a front end portion abutting on each other and a base end portion mounted on the front end side of each of the doors. A configuration in which a magnet is housed at the distal end of the seal so that the order of polarity at each distal end is opposite to each other, and the base end of each seal member is formed in a shape constricted from the distal end; A support member for attaching a seal member is provided on the back side of the tip of the door, and the seal member is attached to the tip of the support member so that the seal member projects a predetermined amount from the tip surface of the door. Can be adopted.

Further, in the double door type refrigerator according to the present invention, a heat conductive member is disposed between the back surface of the front end of each of the doors and the support member, and the front end of the heat conductive member is sealed with the seal. A configuration in which a heater that supplies heat to the heat conductive member is disposed between the support member and the heat conductive member while projecting to the front side of the member, and a front end of the heat conductive member is positioned from the front side of the seal member. A configuration that bends in a direction to separate can be adopted.

[0010] In the double door refrigerator according to the present invention, the distal end of the support member protrudes to the rear side of the seal member, and the seal member provided on the rear side of each of the doors is internally provided. It is possible to adopt a configuration in which a seal member containing a magnet is adopted, and the attraction force of the seal members on the tip end side of each of the doors is set to be smaller than the attraction force of the seal member to the storage body. it can.

[0011]

In the double door type refrigerator configured as described above, each seal member (tip surface side seal member) disposed on the front end face of each door is extendable and contractable in the opening and closing direction of the door. When the opening and closing door is opened and closed, each end face side sealing member swings in the opening and closing direction of the opening and closing door by the attraction force of the magnet, and the opposing surface of each end face side sealing member is opened and closed in the opening and closing direction. Tilt. For this reason, when the opening and closing door is opened and closed, there is little sliding contact between the two opposing surfaces, and wear is suppressed, and a decrease in the durability of each end face side seal member due to such wear is prevented.

In addition, since each of the distal-side sealing members is extendable and contractible, it is not always necessary to accurately form the length of each of the distal-side sealing members protruding toward the distal end. Accuracy in mounting each door on the tip end side is not so required.

[0013] In the double-door refrigerator, each of the sealing members at the front end surface is constituted by a front end portion abutting on each other and a base end portion mounted on the front end surface side of each opening / closing door. If the order of the polarities at the distal end is housed so that they are opposite to each other, and if each base end is formed in a shape constricted from the distal end, the opening / closing of the opening / closing door in the opening / closing direction of the sealing member at the distal end surface can be performed. The swinging is facilitated, and the sliding contact on the facing surface can be further reduced.

Further, when the opening / closing door is closed, when one end face side seal member gradually approaches the other end face side seal member, the opposing surfaces are separated from each other by the action of the repulsive force of the two Negmats, and both end faces are separated. When the surface side sealing member further approaches, the opposing surfaces are attracted to each other by the action of the attraction force of the two magnets. Therefore, sliding contact on the opposing surface when the door is closed can be substantially eliminated.

In the double-door refrigerator, a support member for attaching a seal member is provided on the back side of the front end of each door, and the seal member is attached to the front end of the support member so that the seal member is attached. With a configuration in which a predetermined amount protrudes from the front end surface of the door, it is easy to attach each front end side seal member to the front end side of each door.

In the double-door refrigerator, a heat conducting member is disposed between the back surface of the front end of each door and the supporting member, and the front end of the heat conducting member projects toward the front side of the front end side sealing member. In addition, if a configuration is adopted in which a heater for supplying heat to the heat conductive member is provided between the support member and the heat conductive member, the front end side seal member is heated from the front side at the front end portion of the heat conductive member. In addition, it is possible to prevent dew condensation, frost formation, and the like on the front side of the front end face side seal member.

Further, since the front end of the heat conducting member covers the front end side seal member from the front side, the front end side seal member is not visually recognized between the open / close doors when the open / close door is closed. The appearance can be prevented from deteriorating, and the function of protecting the front end face side sealing member at the time of putting in and taking out the product into and from the storage body can be exhibited.

In this case, if the distal end of the heat conducting member is bent in a direction away from the front side of the distal end side sealing member, the above-mentioned respective effects are further exhibited.

In the double door refrigerator, if the distal end of the support member is protruded to the rear side of the distal end side seal member, it is possible to prevent cold air from hitting the rear side of the distal end side seal member to form dew condensation. In addition to suppressing frost formation, it is also possible to suppress the intrusion of heat into the storage body through the distal end face side sealing member. In addition, the distal end of the supporting member, together with the distal end of the heat conducting member, regulates the swing of the distal end face side sealing member in the opening and closing direction to a predetermined amount, thereby preventing excessive swinging of the distal end side sealing member. it can.

In the double door refrigerator, a seal member containing a magnet therein is employed as a seal member disposed on the back side of each opening / closing door. By adopting a configuration in which the attraction force between the front end side seal members of each opening / closing door is set to be small, the attraction force between the front end side seal members can be set to the minimum necessary for sealing between the front end side seal members. Can,
With this, the peeling force and the repulsion force between the opposing surfaces of the front end surface side sealing member when the opening and closing door is opened and closed can be reduced, so that the opening and closing operation of the opening and closing door can be performed smoothly, and Premature damage to the seal member can be prevented. .

[0021]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. FIG. 1 shows an example of a double door refrigerator according to the present invention. The double door type refrigerator (hereinafter sometimes simply referred to as a refrigerator) indicates a front state in which all upper and lower doors are closed, and all the doors are moved to the front side (front). It can be opened by turning, and can be closed by turning to the rear side (rearward).

The refrigerator has two upper and lower refrigeration compartments. As shown in FIGS. 2 and 3, the refrigerator main body 11 has front openings 11a and 11b at its upper and lower parts, respectively. A pair of left and right first and second doors 12 and 13 that open and close the upper front opening 11a and a pair of left and right first and second doors that open and close the lower front opening 11b. 14 and 15 are provided. Each first
The doors 12 and 14 are rotatably supported in the front-rear direction at the left edges of the openings 11a and 11b of the cabinet main body 11 at the left edges which are their base ends. , 15
Are supported by the right edge of each opening 11a, 11b of the cabinet main body 11 so as to be rotatable in the front-rear direction at the right edge which is their base end. A seal member is provided on the back side of each of the doors 12 to 15 along the peripheral edge thereof.

As shown in FIGS. 2 to 6, the seal members on the side of the first doors 12, 14 are disposed on the front edge of the rear surface of the door via a support member 21 and extend along the front end surface of the door. A first seal member 22 extending vertically in a vertical direction, and a second seal member 23 disposed directly on an upper edge, a base edge, and a lower edge of the rear surface of the door and extending in a U-shape along the periphery thereof. The first seal member is disposed at the front edge of the rear surface of the door via the support member 24 and extends vertically along the front end surface of the door. 25, and a second seal member 26 directly disposed on the upper edge, the base edge, and the lower edge of the rear surface of the door and extending in a U-shape along the periphery of the door. Each of the seal members 22, 23, 25, and 26 is a member in which a magnet is housed inside a seal portion main body made of vinyl chloride, and the first seal members 22, 25 correspond to the distal end surface side seal member in the present invention. .

The first doors 12 and 14 are substantially identical to each other except for a handle. The first doors 12 and 14 are provided with the same first seal member 22 via the same support member 21. , The same second seal member 23 is provided, and each of the second doors 13, 15 has the same configuration as each other, and has the same first door via the same support member 24.
A seal member 25 is provided and the same second
The seal member 26 is provided. Therefore,
Hereinafter, the upper first door 12 and the second door 13 will be mainly described.
Will be described in detail, and a detailed description of the lower first door 14 and the second door 15 will be omitted, and description will be made as necessary.

The support member 21 attached to the first door 12 and the support member 24 attached to the second door 13 have the same structure as shown in FIGS. The doors 12 and 13 are symmetrically attached to each other.

The support members 21 and 24 are connected to the first doors 12 and 1 respectively.
3 made of plastic having substantially the same length as the top and bottom of the front end surfaces 12a and 13a, and having a flat plate-like body 21a, 24a.
Mounting portions 21b, 24b extending frontward at the distal ends of the plate-shaped main bodies 21a, 24a, and projecting portions 21c, 24c projecting distally from the rear surfaces of the distal ends of the mounting portions 21b, 24b.
And leg portions 21d and 24d protruding toward the front side at an intermediate portion between the plate-shaped main bodies 21a and 24a. The first seal members 22 and 25 are mounted on the mounting portions 21b and 24b of the support members 21 and 24, respectively.

Each of the first seal members 22 and 25 has a large cylindrical seal portion 22a, 25a and a small cylindrical leg portion 22b, 25b.
And magnets 22c and 25c housed at the distal ends of the seal portions 22a and 25a, respectively.
And rigid attachment portions 22d and 25d fixed to the base ends of the legs 22b and 25b.
Except for the arrangement direction of c and 25c, they are configured the same. The magnet 22c is housed in the seal portion 22a with the N pole facing the front and the S pole facing the back.
Is accommodated in the seal portion 25a with the S pole facing the front and the N pole facing the back.

In each of the first sealing members 22 and 25,
Attachment portions 22d, 25d provided on the leg portions 22b, 25b are fitted and attached to the attachment portions 21b, 25b of the support members 21, 24, and the seal portions 22a, 25a are protruded to the distal end side. I have. Each of the support members 21 and 24 is attached to each of the first doors 1 with the first seal members 22 and 25 attached thereto.
The heat conductive members 27 and 28 are mounted between the plastic outer shells 12b and 13b which form the recesses provided on the rear surfaces on the front end sides of the front and rear ends 2 and 13.

The heat conducting members 27 and 28 are made of the same metal and have the same protrusions as those of the plate-shaped main bodies 27a and 28a.
b and 28b are formed to bend toward the front side. Each of the heat conducting members 27, 28 is provided with an outer shell 12b of each of the first doors 12, 13,
13b, which are screwed together and screwed, and the front end protruding portions 27b, 28b are connected to the front end surfaces 12a,
13a protrudes from the back side to the tip side. The supporting members 21 and 24 are screwed to the heat conducting members 27 and 28, and the front side surfaces of the mounting portions 21b and 24b and the legs 21d and 24d are connected to the plate-like main bodies 27a and 2 of the heat conducting members 27 and 28.
8a in a state of being in contact with the legs 21a.
The heaters 29a and 29b are inserted into the space defined by the d and d. The heaters 29a and 29b are in contact with the plate-shaped main bodies 27a and 28a of the heat conducting members 27 and 28, respectively. The spaces in the support members 21 and 24 are filled with a heat insulating member.

In this mounting state, the seal portion 22a of the first seal member 22 is positioned at a predetermined distance back and forth between the distal protrusion 27b of the heat conducting member 27 and the distal protrusion 21c of the support member 21. Then, the front end portion is slightly protruded toward the front end side from both front end protruding portions 21c and 27b.
Similarly, the seal portion 25a of the first seal member 25 is located between the distal end protruding portion 28b of the heat conducting member 28 and the distal end protruding portion 24c of the support member 24 while maintaining a predetermined interval in front and rear. The protruding portions 24c and 28b slightly protrude toward the front end.

The first seal member 22 is capable of expanding and contracting toward the distal end and the proximal end of the first door 12 and swinging toward the front and back sides.
Is capable of extending and contracting toward the distal end side and the proximal end side of the second door 13 and swinging toward the front side and the rear side. When the first seal members 22 and 25 face each other, each magnet 22c , 25c are opposed to each other.

In the refrigerator, the magnets 22c, 25c housed in the first seal members 22, 25, respectively.
Is used, the magnetic force of which is weaker than that of the magnets accommodated in the second seal members 23 and 26. The attraction force between the first seal members 22 and 25 is
The suction force is set smaller than the suction force of the storage compartments 3 and 26 on the storage body 11.

In the refrigerator configured as described above, by closing the upper first door 12 and the second door 13, the upper opening 11a of the refrigerator main body 11 can be airtightly closed, and Side first door 14 and second door 14
By closing the door 15, the lower opening 11b on the lower side of the cabinet main body 11 can be airtightly closed. 4 to 6 show a state in which the second door 13 is opened and closed while the first door 12 is closed.

In the refrigerator, as shown in FIG. 4, when the second door 13 is closed with the first door 12 closed, the first seal member on the side of the second door 13 is closed while the second door 13 is being closed. When 25 approaches the first seal member 22 on the first door side 12, the magnets 22 of the first seal members 22
c and 25c repel each other, but when the second door 13 is further closed and the first seal members 22 and 25 approach each other,
The N and S poles of the two magnets 22c and 25c face each other and attract each other, and the first seal members 22 and 25 are attracted to each other at the distal end surfaces in a state of extending to the distal end side as shown in FIG. The end surfaces 12a, 1 of the first door 12 and the second door 13
The gap between 3a is closed and then closed as shown in FIG.

As shown in FIG. 6, when the first door 12 and the second door 13 are closed and the second door 13 is opened, the first seal members 22, 25 in the suction state are opened.
Swing in the front-rear direction, as shown in FIG. 5. When the second door 13 is further opened in this state, the first seal members 22, 25 are separated from each other as shown in FIG. afterwards,
The second door 13 is opened and the first door 12 can be opened.

As described above, in the refrigerator, the first
Since each of the first seal members 22 and 25 disposed on the distal end surface side of the door 12 and the second door 13 is extendable and contractable and can swing in the opening and closing directions of each of the doors 12 and 13, 13, the first seal members 22 and 25 are connected to the magnet 2.
Swing in the opening and closing direction of the door by the suction force of 2c, 25c,
As shown in FIG. 5, the opposing surfaces of the first seal members 22 and 25 are inclined in the opening and closing directions.

For this reason, when the doors 12 and 13 are opened and closed, there is little sliding contact between the opposing surfaces of the first seal members 22 and 25, and wear is suppressed, and the first seal members 22 and 25 caused by such wear are reduced. 25 is prevented from being reduced in durability. Also,
Since the first seal members 22 and 25 can be extended and contracted toward the distal end and the proximal end, it is not always necessary to accurately form the projecting length of the first seal members 22 and 25 toward the distal end. First doors 12 of first seal members 22 and 25,
Accuracy in mounting the second door 13 on the front end surface side is not so required.

In the refrigerator, the first sealing members 22 and 25 are connected to the legs 22b and 25 which are easy to swing on the base end side.
b, and the tip side is magnets 22c, 2c.
Since the magnets 22c and 25c are formed in the seal portions 22a and 25a that house the magnets 5c and the magnets 22c and 25c are housed with the polarity order being opposite to each other, each of the first seal members 22 and The swing of the seal 25 in the opening / closing direction is facilitated, and the sliding contact between the opposing surfaces of the seal portions 22a and 25a can be further reduced.

When one of the first seal members gradually approaches the other first seal member when the doors 12 and 13 are closed, the seal portions 22a and 22c are acted upon by the repulsive force of the two negates 22c and 25c. When the opposing surfaces of 25a are separated from each other and the first seal members 22, 25 are further approached, the opposing surfaces of the seal portions 22a, 25a are attracted to each other by the action of the attraction force of the magnets 22c, 25c. Therefore, sliding contact between the opposing surfaces of the seal portions 22a and 25a when the doors 12 and 13 are closed can be substantially eliminated.

In the refrigerator, the first door 12 and the second door 12
Since the support members 21 and 24 are disposed on the back side of the front end of the door 13 and the first seal members 22 and 25 are attached to the front ends of the support members 21 and 24, the first It is easy to attach the first seal members 22 and 25 to the distal end surfaces of the first door 12 and the second door 13.

Further, heat conducting members 27 and 28 are disposed between the back surfaces of the front end portions of the doors 12 and 13 and the support members 21 and 24, and the front projecting portions 27b and 28b are connected to the first seal member 2.
2 and 25 are projected to the front side, and heaters 29a and 29b
, The first seal members 22, 25 are warmed from the front side by the heat of the first seal members 22, 25.
The dew condensation, frost formation, etc. on the front side of 5 can be prevented.

Further, since the front end protruding portions 27b and 28b of the heat conducting members 27 and 28 cover the first seal members 22 and 25 from the front side, the first seal members 22 and 25 are connected to both doors 12 and 13. At the time of closing, it is not visually recognized through these gaps, it is possible to prevent the appearance from being deteriorated, and it also has a function of protecting the first seal members 22 and 25 when articles are taken in and out of the storage body 11.

In the refrigerator, the support members 21 and
4, the first projecting portions 21c, 24c are attached to the first seal member 22,
Since the configuration of projecting to the rear side of the first seal member 25 is adopted, it is possible to prevent cold air from hitting the rear side of the first seal members 22 and 25 to prevent dew condensation and frost formation.
It is also possible to prevent heat from entering the storage body 11 through the seal members 22 and 25. In addition, the support members 21 and
4 are provided with heat conducting members 27, 28.
Together with the tip protrusions 27b, 28b of the first seal member 22, 25, the swing of the first seal members 22, 25 is regulated to a predetermined amount.
Excessive rocking of 2, 25 can be prevented.

In the refrigerator, the first sealing member 2
Since the suction force between the first and second seal members 22 and 25 is smaller than the suction force between the second seal members 23 and 26 on the storage body 11, the suction force between the first seal members 22 and 25 is reduced by the first seal member. It can be set to the minimum necessary for sealing between the members 22 and 25, whereby both doors 12 and 13 can be set.
Seal portion 22 of first seal members 22, 25 when opening and closing
The opening and closing operations of both doors 12 and 13 can be performed smoothly by reducing the peeling force and the repulsive force between the opposing surfaces of a and 25a.

Although the above description is based on the upper first door 12 and the second door 13, the lower first door 14
The second door 15 has the same configuration as the two doors 12 and 13, operates in the same manner as the two doors 12 and 13, and has the same operation and effect.

[Brief description of the drawings]

FIG. 1 is a front view showing an example of a double door refrigerator according to the present invention.

FIG. 2 is a partially enlarged longitudinal sectional side view of the refrigerator as viewed in the direction of arrow 2-2 in FIG. 1;

FIG. 3 is a partially enlarged rear view of an opening / closing door constituting the refrigerator.

FIG. 4 is a partially enlarged cross-sectional plan view showing an open state of one opening / closing door constituting the refrigerator.

FIG. 5 is a partially enlarged cross-sectional plan view showing a state immediately before closing or immediately after opening of the door.

FIG. 6 is a partially enlarged cross-sectional plan view showing the closed state of the door.

[Explanation of symbols]

11: Storage body, 11a, 11b: Front opening, 12, 1
4, first door, 13, 15 second door, 12a, 13a distal end surface, 12b, 13b outer shell, 21, 24 support member,
21a, 24a: plate-shaped main body, 21b, 24b: mounting portion,
21c, 24c: tip protrusion, 21d, 24d: leg,
22, 25 ... first seal member, 22a, 25a ... seal portion, 22b, 25b ... leg portion, 22c, 25c ... magnet, 22d, 25d ... mount portion, 23, 26 ... second seal member, 27, 28 ... heat Conductive members, 27a, 28a: plate-shaped main body, 27b, 28b: tip projecting portions, 29a, 29b ...
heater.

Claims (7)

[Claims] 1. A pair of left and right opening / closing units which are rotatably assembled in the front-rear direction at a base end to left and right side edges of a main body having a front opening and open / close the front opening of the main body. Equipped with a door,
When these two doors are closed, a flexible sealing member disposed along the peripheral edge of the rear surface on the rear side of the two doors is brought into contact with the peripheral edge of the front opening of the storage body, In the double-sided refrigerator in which a flexible sealing member arranged along the front end surfaces of the two opening / closing doors facing each other abuts each other to hermetically close the refrigerator main body, Adoptable as each seal member disposed on the front end surface is a seal member that is expandable and contractible and contains a magnet therein, and swings the seal member toward the front end side of each of the doors in the opening and closing direction of the door. A double door type refrigerator which is movably mounted. 2. The double-door refrigerator according to claim 1, wherein each of said seal members is constituted by a front end portion abutting on each other and a base end portion attached to a front end side of each of said doors. A magnet is housed at the distal end of each seal member so that the order of polarities at each distal end is opposite to each other, and the base end of each seal member is formed in a shape constricted from the distal end. Double door refrigerator. 3. The double door refrigerator according to claim 1, further comprising a support member for attaching a seal member on a back side of a front end of each of the opening and closing doors. A double-door refrigerator, wherein the seal member is attached and the seal member protrudes by a predetermined amount from a front end surface of the door. 4. A door opening type refrigerator according to claim 3, wherein a heat conducting member is disposed between a back surface of a tip portion of each of said doors and said support member, and said tip portion of said heat conducting member is attached to said door. A double door refrigerator, wherein a heater is provided between the support member and the heat conductive member so as to protrude toward a front side of the seal member, and a heater for supplying heat to the heat conductive member is provided. 5. The double-door refrigerator according to claim 4, wherein a tip portion of said heat conducting member is bent in a direction away from a front side of said seal member. 6. The double-open refrigerator according to claim 3, wherein a tip of said support member protrudes rearward of said seal member. 7. The double door refrigerator according to claim 1, wherein a seal member containing a magnet therein is provided as a seal member disposed on the back side of each of said doors. A double-sided refrigerator, wherein the suction force of the seal members on the front end side of each of the opening and closing doors is set smaller than the suction force of the seal members against the storage body.