JP2005249343A - Door device for cooling storage warehouse - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent the entry of cold air from a warehouse into a clearance between a door and the opening edge of a doorway. <P>SOLUTION: The doorway 11 is formed by fitting an opening frame 26 to an opening portion 21 of a front panel 20. An opening frame packing 50 is fitted to the surface of the opening frame 26 ranging from the inner peripheral face to the face on which a door packing 40 abuts. A first fin 61 and a second fin 62 are protruded on a position close to the angle part of a mounting portion 51 of the opening frame packing 50 and from a position of the end on the warehouse inside, respectively. When the door 12 is closed, the door packing 40 has close contact with an abutting portion 52 of the opposite opening frame packing 50 in the form of mutually elastic contraction. Besides, the protruded end of the first fin 61 has close contact with the peripheral edge of the face 35A on the warehouse inside of a door body 35, and the opening of a clearance S between the outer peripheral face of the door body 35 and the inner peripheral face of the doorway 11 is closed. The second fin 62 is protruded on a plane almost flush with the opening edge on the warehouse inside of the doorway 11 in an attitude perpendicular to the axis of the doorway 11. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a door device for a cooling storage.

Conventionally, what was described in patent document 1 is known as an example of the door apparatus in a prefabricated refrigerator. When this is schematically shown, as shown in FIG. 6, an entrance / exit 2 is opened in the side wall 1 of the heat-insulating refrigerator body, and a door body 4 that can be fitted in the entrance / exit 2 at a side edge of the entrance / exit 2. And a heat insulating door 3 composed of a flange portion 5 provided on the periphery of the outer surface of the chamber is swingably mounted, and a packing 6 is mounted on the inner surface of the flange portion 5. When the door 3 is closed, the door 6 is fitted in the entrance 2 and the packing 6 is brought into contact with the outer edge of the entrance 2 to be sealed.
In this way, the door body 4 is partly fitted into the doorway 2 in this type of prefabricated refrigerator, because the door 3 is thick in order to ensure heat insulation. The amount of protrusion of the doorway 2 to the front side is reduced, and the side wall 1 of the refrigerator body is also thick and the depth dimension of the doorway 2 is increased. It is intended to suppress the amount of dent from the inside, and to suppress as much as possible the cold air circulated in the warehouse from entering the dent space and generating turbulent flow.
Japanese Patent No. 3398326

However, as described above, in order to swing and open while fitting the door body 4 in the doorway 2, a clearance S must be provided between the inner peripheral surface of the doorway 2 and the outer peripheral surface of the door body 4. Absent. Then, the cool air in the cabinet also enters the clearance S, cools the packing 6 installed in the back, and depending on the conditions of the outside air such as high humidity, dew condensation on the outer surface of the packing 6 may cause dripping There was a problem.
The present invention has been completed based on the above circumstances, and an object thereof is to prevent dew condensation on the packing.

  As a means for achieving the above object, the door device of the cooling storage according to the invention of claim 1 is mounted on the doorway opened on the side surface of the storage body so that the door can swing open and close. In the seal attached to the peripheral edge of the inner surface of the warehouse, the seal is in contact with the outer edge of the entrance and exit of the entrance, and an elastic fin protrudes from the peripheral surface of the entrance and exit. When the door is closed, the door can be brought into contact with the inner surface of the door in order to close the entrance portion of the clearance formed between the door and the vicinity of the outer edge of the doorway. It has the characteristics.

According to a second aspect of the present invention, in the first aspect of the present invention, the door is formed of a door main body that fits into the doorway and a flange portion that is provided on a peripheral edge of the outer surface of the door. The packing is mounted on the inner surface of the flange portion, and the fin is provided to protrude from the peripheral surface of the doorway in a posture intersecting the center line of the doorway, It is characterized by being in contact with the peripheral edge of the surface.
According to a third aspect of the present invention, in the first or second aspect of the present invention, another fin intersects the center line of the doorway at a position near the inner end of the warehouse on the peripheral surface of the doorway. It is characterized in that it is provided in a protruding position.

According to a fourth aspect of the present invention, in the first or second aspect of the present invention, an elastic member is attached to a surface of the doorway on which the packing abuts, and the fin is integrally formed on the elastic member. It has a characteristic where it exists.
According to a fifth aspect of the present invention, the elastic member is attached to a surface of the inlet / outlet where the packing abuts, and at least one of the fin and the another fin is attached to the elastic member. Is characterized in that is integrally formed.
The invention of claim 6 is characterized in that, in the invention of claim 4 or 5, the packing and the elastic member are made of different materials.

<Invention of Claim 1>
When the door is closed, the fins projecting from the peripheral surface of the doorway are in close contact with the inner surface of the door, so that the entrance of the clearance between the door and the vicinity of the mouth outside the doorway Part is blocked. Therefore, the cool air in the storage is prevented from entering the clearance, the cooling of the packing is suppressed, and condensation on the outer surface or the like is prevented. Further, the cool air can be supplied into the cabinet without waste, and the inside of the cabinet can be efficiently cooled.

<Invention of Claim 2>
The fin projecting from the peripheral surface of the doorway elastically adheres to the peripheral edge of the inner surface of the door body, so that the entrance portion of the clearance between the inner peripheral surface of the doorway and the outer peripheral surface of the door body is It is blocked.
<Invention of Claim 3>
The cool air circulating in the chamber flows smoothly along the other fins at the entrance / exit part without causing turbulence by wrapping around the inside. That is, another fin functions like a baffle plate, and cool air can be circulated smoothly in the warehouse, and the interior can be cooled evenly.

<Invention of Claims 4 and 5>
If the surface on the outer edge of the entrance / exit where the packing hits has high rigidity, the following problems will occur. If the gap between the packing and the abutment surface of the entrance / exit varies due to door installation errors, etc., the amount of packing compression will increase in the narrow space, making the door open / close operation heavy, and the packing part Easily damaged. Since the variation in the interval is absorbed only by the amount of compression of the packing, there is a limit, and a sealing failure may occur. Even if the packing is cooled and hardened, it cannot be brought into close contact with the contact surface of the other party, leading to a seal failure. When storing the stored item from the doorway, the stored item may be damaged by hitting the hard contact surface.

In that respect, in the present invention, since the elastic member is mounted on the contact surface of the packing at the edge of the entrance / exit, the following effects can be obtained.
When the door is closed, the packing and the elastic member are elastically contracted and brought into contact with each other, thereby improving adhesion, that is, sealing performance. Even if the packing is cooled and hardened, the elastic member is elastically compressed to be in close contact, and the sealing property can be secured. Since the variation in the distance between the packing and the contact surface of the inlet / outlet is absorbed by the amount of elasticity of both the packing and the elastic member, the variation can be absorbed over a wide range. Therefore, it is unnecessary to increase the door mounting accuracy more than necessary, and the mounting operation can be simplified. Even when the stored item is stored from the entrance / exit, the elastic member functions as a protector so that the stored item is prevented from being damaged.

<Invention of Claim 6>
Since the packing and the elastic member are made of different materials, even when the door is continuously closed for a long time, that is, even when the packing and the elastic member are in continuous contact with each other for a long time, they are prevented from sticking.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
<Embodiment 1>
A first embodiment of the present invention will be described with reference to FIGS. In this embodiment, the door apparatus of the prefabricated refrigerator is illustrated.
As schematically shown in FIG. 1, a prefabricated refrigerator has a box-shaped refrigerator main body 10 formed by assembling a heat insulating panel, and an entrance / exit 11 is formed on the front surface of the refrigerator main body 10 (see FIG. 2). ), A door 12 is attached to the doorway 11 through a hinge 13 so as to be swingable and openable.

  The structure of the door device will be described in detail. In FIG. 2, reference numeral 20 denotes a front panel of the refrigerator main body 10, and an opening 21 is formed in the front panel 20 so as to constitute the aforementioned entrance / exit 11. The front panel 20 includes an inner panel 22 and an outer panel 23 both made of a metal plate such as a stainless steel plate. Both panels 22 and 23 are formed with rectangular openings, the panels 22 and 23 are disposed with a space therebetween, and a synthetic resin closing plate is formed between the opening edges of the panels 22 and 23. A heat insulating material 25 made of a foamed resin such as a foamed urethane resin is formed between the panels 22 and 23 by foam filling.

  The opening 21 of the front panel 20 is fitted with a warehouse frame 26 having an L-shaped cross section so as to cover a region having a predetermined width from the inner peripheral surface to the outer edge of the warehouse. Is formed. The storehouse frame 26 is formed of a synthetic resin material to be thick and has high rigidity, and the portion constituting the rim on the outer side of the entrance / exit 11 has an inner portion near its outer end, A reinforcing member 27 is embedded. This reinforcing member 27 is also used to provide the hinge 13 of the door 12.

A door 12 is attached to the doorway 11 so as to be swingable. The door 12 is heat-insulating. Similarly, the inner panel 30 and the outer panel 31 are arranged with a space therebetween, and a synthetic resin closure having a cross-sectional crank shape between the opening edges of both the panels 30 and 31 is provided. It is formed by sealing with a plate 32 and foaming and filling a heat insulating material 25 made of foamed resin between the panels 30 and 31. As a whole, with respect to the thick door body 35 that can be fitted with the clearance S (see FIG. 3) in the aforementioned entrance 11, a flange portion 36 is provided on the entire periphery of the outer peripheral surface. The shape is different.
The right end surface of the flange portion 36 of the door 12 is connected to the right edge of the outer edge of the doorway 11 through the hinge 13 at two upper and lower positions, and the door 12 is opened and closed by swinging around the right edge. It has become so. In the state where the door 12 is closed, as shown in FIG. 3, the inner surface 35 </ b> A of the door main body 35 is set to slightly enter the outer region of the doorway 11.

When the door 12 is closed, the inner surface 36 </ b> A of the flange portion 36 is brought into contact with the outer edge of the entrance / exit 11 via the door packing 40.
The door packing 40 is formed of a rubber material (elastic material) such as soft vinyl chloride, and has a thick hollow band shape. Inside, three air chambers 42 are arranged in the width direction via a partition wall 41. In order to ensure elasticity and to ensure heat insulation between the inner and outer surfaces in the width direction. On the other hand, a locking groove 37 is formed on the inner surface 36A of the flange portion 36 at a position slightly outward from the central portion in the width direction. And the door packing 40 hits the remaining whole surface except the inner edge part in the surface 36A inside the warehouse of the flange part 36 by inserting the latching | locking part 43 protrudingly provided by the back surface side in the latching groove 37. It is attached in this way.

A mounting recess 46 is formed on a surface extending from the inner peripheral surface to a region near the corner of the mouth edge on the outer side of the warehouse, that is, the surface 45 on which the door packing 40 abuts, in the warehouse frame 26 constituting the aforementioned entrance 11. The warehouse frame packing 50 (corresponding to the elastic member of the present invention) is mounted. The warehouse opening frame packing 50 is formed of a rubber material (elastic material) different from the door packing 40 such as silicon rubber, and is formed in an L-shaped section with a thickness of about 1/3 of the warehouse opening frame 26. Yes.
In detail, the warehouse frame packing 50 includes an attachment portion 51 attached to the inner peripheral surface side of the warehouse opening frame 26 and a contact portion 52 attached to the contact surface 45 side of the door packing 40. Yes. The contact portion 52 and the corner portion connected to the attachment portion 51 are formed with three hollow portions 53 shown in the figure, ensuring the elasticity of the contact portion 52 and the heat insulation between the inside and outside in the width direction. It has been.
Further, two insertion grooves 54 for inserting a code heater (not shown) for preventing condensation are formed on the surface side of the contact portion 52.

A dovetail groove 55 is formed on the rear surface of the mounting portion 51, while a dovetail 47 that fits into the dovetail groove 55 is formed in the mounting recess 46 on the inner peripheral surface side of the warehouse frame 26. Further, an insertion piece 56 that protrudes toward the inner side of the mounting portion 51 protrudes from the inner end of the mounting portion 51, and the insertion piece 56 is inserted into the inner end surface of the mounting recess 46. A recessed groove 48 is formed. Further, an insertion piece 57 protruding outward is protruded from the outer end of the contact portion 52, and the insertion piece 57 is inserted into the outer end face of the mounting recess 46. An insertion groove 49 is formed.
Then, the attachment portion 51 side is fitted with the counterpart 47 in the dovetail groove 55, and the insertion piece 56 is inserted into the counterpart insertion groove 48, and the contact piece 52 side is inserted with the insertion piece 57. By inserting it into the groove 49, the warehouse frame packing 50 is fitted into the mounting recess 46 completely and detachably.

  A first fin 61 protrudes from the surface of the mounting portion 51 (the inner peripheral surface of the entrance / exit 11) of the warehouse frame packing 50 at a position near the corner. The first fin 61 is thin and easily elastically deformable, and has a length of about three times the width of the clearance S between the outer peripheral surface of the door body 35 and the inner peripheral surface of the doorway 11 described above. In the natural state, as shown in FIG. 2, it protrudes perpendicular to the axis of the entrance / exit 11, and the protruding end side is bent slightly inward. When the door 12 is closed, as shown in FIG. 3, the slightly longer half portion on the protruding end side of the first fin 61 can come into contact with the peripheral portion of the inner surface 35 </ b> A of the door body 35. It has become.

  A second fin 62 protrudes from the end position on the inner surface of the mounting portion 51. The second fin 62 has substantially the same thickness and length as the first fin 61 described above. However, the posture in the natural state is orthogonal to the axis of the entrance / exit 11 on the projecting end side after the root portion projects obliquely toward the inside of the warehouse. In other words, most of the projecting end side of the second fin 62 protrudes in a posture orthogonal to the axis of the entrance / exit 11 on the same plane as the inner edge of the entrance / exit 11.

The present embodiment has the above-described structure, and the operation thereof will be described subsequently.
When the door 12 swings in the direction of the arrow in FIG. 2 around the hinge 13 and is closed, as shown in FIGS. 3 and 4, the inner surface 35 </ b> A of the door main body 35 is outside the storage of the doorway 11. It will be in a state where it has entered a little. Along with this, the first fin 61 is elastically deformed, and the slightly longer half portion on the protruding end side contacts the peripheral portion of the inner surface 35 </ b> A of the door main body 35 and comes into close contact therewith. Thereby, the entrance of the clearance S between the outer peripheral surface of the door body 35 and the inner peripheral surface of the doorway 11 is closed.
At the same time, the door packing 40 and the abutting portion 52 of the opposite warehouse frame packing 50 are elastically contracted and abutted against each other. Further, the second fin 62 is maintained in a state in which most of the protruding end side protrudes in a posture orthogonal to the axis of the doorway 11 on substantially the same surface as the inner edge of the doorway 11.

  During operation, cold air is circulated and circulated in the direction of arrow A, for example. Here, most of the cold air flowing along the inner surface of the front panel 20 is guided by the second fin 62 without passing into the entrance / exit 11 after passing through the inner edge of the entrance / exit 11. It flows straight and smoothly. However, a part of the cold air enters the entrance / exit 11 and tries to enter the clearance S between the outer peripheral surface of the door body 35 and the inner peripheral surface of the entrance / exit 11, but the entrance to the clearance S is the first fin 61. , It is prevented from entering the clearance S, and subsequently flows along the inner surface 35 </ b> A of the door body 35.

According to this embodiment, the following many advantages can be obtained.
A first fin 61 protruding from the inner peripheral surface of the doorway 11 is provided, and is elastically brought into close contact with the peripheral edge of the inner surface 35A of the door main body 35 when the door is closed, whereby the inner peripheral surface of the doorway 11 and the door main body 35 are provided. Since the entrance of the clearance S between the outer peripheral surface and the outer peripheral surface of the door is closed, the cool air circulating in the warehouse is prevented from entering the clearance S, and the door packing 40 located at the end is prevented from cooling. Thus, condensation on the surface exposed to the outside air is prevented. Therefore, it is possible to prevent the condensed water from flowing along the surface of the front panel 20 and the door packing 40 from being frozen. In addition, the cool air is supplied to the cabinet without waste, and the cooling efficiency can be increased.
Even when the door 12 is opened, both the first fin 61 and the second fin 62 protrude toward the center of the entrance / exit 11, so that the cool air in the cabinet hardly flows out to the outside.

  By providing the second fin 62 at the inner edge of the entrance 11, most of the cool air in the compartment that circulates along the inner surface of the front panel 20 is guided by the second fin 62. It smoothly circulates along the inner surface of the entrance / exit 11 without causing turbulence due to wrapping around the entrance / exit 11. That is, the 2nd fin 62 functions like a baffle plate, can circulate cool air smoothly in a store | warehouse | chamber, and can cool the inside of a store | warehouse | chamber uniformly.

When the door opening 12 is closed by fitting the storage opening frame packing 50 to the storage opening frame 26, the door packing 40 and the abutting portion 52 of the opposing storage opening frame packing 50 are elastically contracted with each other. In close contact. Therefore, high sealing performance is ensured. Even if the door packing 40 is cooled and hardened, the contact portion 52 can be elastically brought into close contact, and sealing performance can be ensured.
The variation in the distance between the door packing 40 and the contact surface 45 of the door packing 40 at the entrance / exit 11 is absorbed by the amount of elasticity of both the door packing 40 and the contact portion 52 of the warehouse frame packing 50. Therefore, variations can be absorbed over a wide range. Therefore, it is not necessary to increase the mounting accuracy of the door 12 more than necessary, and the mounting operation can be simplified.

When the stored item is stored from the entrance / exit 11, even when the stored item is applied to the rim or the inner peripheral surface, the warehouse frame packing 50 functions as a protector so that the stored item is prevented from being damaged.
Since the door packing 40 and the storage box frame packing 50 are made of different materials even with the same rubber, the door 12 is closed continuously for a long time, that is, the door packing 40 and the contact portion 52 of the storage opening frame packing 50 are connected. Even when they are in continuous contact for a long time, they are prevented from sticking.

<Embodiment 2>
FIG. 5 shows a second embodiment of the present invention. In the second embodiment, the shape of the first fin 65 is changed.
That is, when the shape of the first fin 65 closes when the door is closed, the protruding end side comes into close contact with the peripheral portion of the inner surface 35A of the door main body 35 and comes into close contact with the outer end of the mounting portion 51 of the storage port frame packing 50. From the inner peripheral surface of the portion to the peripheral edge portion of the inner surface 35A of the door main body 35, an attitude recessed in an arc shape toward the clearance S side is taken.
About another structure, it is the same as that of Embodiment 1, Comprising: The duplicate description is abbreviate | omitted by attaching | subjecting the same code | symbol about the site | part which has the same function.
When the first fin 65 has the shape as described above, in addition to blocking the entrance of the clearance S and preventing cold air from entering the clearance S, the cold air that has entered the entrance 11 is It is possible to circulate more smoothly without staying along the surface 66.

<Other embodiments>
The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention, and further, within the scope not departing from the gist of the invention other than the following. Various modifications can be made.
(1) The storage box frame packing may be a structure in which the attachment portion is removed and only the contact portion is secured. Furthermore, you may remove the warehouse opening frame packing itself, and such a thing is also contained in the technical scope of this invention.
(2) In the above case, the first and second fins are formed separately or separately from the storage box frame packing, and are attached to the inner peripheral surface of the entrance / exit using the mounting portions provided on each fin. That's fine.

(3) Moreover, it is not necessary to provide a 2nd fin, and such a thing is also contained in the technical scope of this invention.
(4) The present invention can be similarly applied to a type in which an entrance / exit is formed using a closing plate that closes an opening edge of an inner / outside panel without using a warehouse frame to form the entrance / exit. Is possible.

(5) In the present invention, the inner surface of the door has a flat surface, and the packing attached to the door contacts a position slightly away from the corner of the outer edge of the door of the doorway, When the door is closed, the present invention can also be applied to a structure in which a clearance is provided between the door and the mouth edge outside the warehouse of the entrance / exit. In this case, for example, the first fin protrudes from the position near the outer edge of the inner peripheral surface of the doorway toward the outer side of the door, and the outer edge of the doorway of the doorway on the outer surface of the door The abutment of the clearance can be blocked by abutting on the portion facing the corner.
(6) Moreover, this invention is applicable to the prefabricated cooling storage containing a freezer, and also the cooling storage in general.

1 is an external perspective view of a prefabricated refrigerator according to Embodiment 1 of the present invention. Sectional view showing the structure near the doorway when the door is opened Sectional view showing the structure near the doorway when the door is closed Partial enlarged view of FIG. The partial expanded sectional view which shows the function of the 1st fin concerning Embodiment 2 Cross section of conventional example

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 ... Refrigerator main body (storage main body) 11 ... Entrance / exit 12 ... Door 13 ... Hinge 20 ... Front panel 21 ... Opening part 26 ... Warehouse opening frame 35 ... Door main body 35A ... (Inside of door main body 35) Inside surface 36 ... Flange part DESCRIPTION OF SYMBOLS 40 ... Door packing (packing) 50 ... Warehouse opening frame packing (elastic member) 51 ... Mounting part 52 ... Contact part 61, 65 ... 1st fin 62 ... 2nd fin S ... Clearance

Claims (6)

The door is swingably opened and closed at the doorway opened on the side of the storage body, and the packing attached to the peripheral edge of the inner surface of the door contacts the outer edge of the door and seals. In what
An elastic fin protrudes from the peripheral surface of the entrance and exit, and this fin forms an entrance portion of the clearance that is formed between the door and the vicinity of the rim on the outside of the entrance and exit when the door is closed. A door device for a cooling storage, wherein the door can be brought into contact with the inner surface of the door to be closed. The door is formed from a door main body that fits in the doorway and a flange portion provided at a peripheral edge of the outer surface of the warehouse, and the packing is attached to the inner surface of the flange portion, The fin is provided so as to protrude from the peripheral surface of the doorway in a posture intersecting with the center line of the doorway, and is in contact with the peripheral edge of the inner surface of the door body. The door device of the cooling storage according to 1. 2. The fin according to claim 1, wherein another fin protrudes in a position intersecting with the center line of the entrance / exit at a position near the end on the inner side of the warehouse on the peripheral surface of the entrance / exit. The door device of the cooling storage according to 2. 3. The door device of the cooling storage according to claim 1, wherein an elastic member is mounted on a surface of the entrance / exit where the packing abuts, and the fin is integrally formed on the elastic member. . 4. An elastic member is attached to a surface of the doorway where the packing abuts, and at least one of the fin and the another fin is integrally formed on the elastic member. The door device of the described cold storage. The door device of the cooling storage according to claim 4 or 5, wherein the packing and the elastic member are made of different materials.

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