JPH0882472A - Freezing/refrigerating chamber - Google Patents

Abstract

PURPOSE: To prevent a clogging of a ventilation path of a freezing/refrigerating chamber by a less process through setting the ventilation path wherein an outer section of a box body is made to be in communication with an inner section of the box body by a packing which executes a detour, to at least one place of a cover body set in an opening section of the box body accommodating a material to be refrigerated or to be cooled. CONSTITUTION: A cover body 12 is consisting of an inner cover 20 executing an opening or a shutting of a box body 11, an outer cover 21 existing at an outside of this inner cover 20 and a heat insulating material 22 filled between these. The box body 12 is supported by a hinge 23 to the box body 11 so that the opening section becomes free to open or shut. Besides, in an inner cover 20, in a vicinity of the hinge 23, a ventilation path 34 making an outer section of a storage room 13 be in communication with an inside section of a storage room 13 is set so as to execute a detaur along an outer periphery of a packing 32 in orthogonality with a packing engagement groove 31. That is to say, on the cover body 12, an outside lateral groove section 34a and an outside vertical groove section 34b, making a space 33 be in communication with an exterior, and an inside vertical groove section 34c and an inside lateral groove section 34d, making the storage room 13 be in communication with the space 33 are set, and by these groove sections and an outside face of the packing 32, an air passage path 34 is formed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a freezer / refrigerator in which a lid body which is openably and closably provided in an opening portion of a box body is provided with an air passage for ventilating the inside and outside of the box body.

[0002]

2. Description of the Related Art Generally, since the inside of a freezer / refrigerator is in a cooled state, when the lid is closed, the warm air trapped inside is cooled and contracts, so that the internal pressure becomes lower than the external pressure. As a result, the lid body comes into close contact with the box body and it becomes difficult to open the lid body. Therefore, it is usual to provide a ventilation path for communicating the inside and outside.

For example, in the refrigerator disclosed in Japanese Unexamined Patent Publication No. 61-86572, as shown in the cross-sectional view of FIG. 7 and the enlarged view of part A of FIG. 8, an inner box 1, an outer box 2 and a heat insulating material 3 are provided. A lid body 5 is attached to the box body 4 made of (4) by a hinge (not shown) so as to be openable and closable. The lid 5 is composed of an inner lid 6, an outer lid 7 and a heat insulating material 8. A packing 9 made of a soft elastic material is attached to the inner lid 6 by a fixing member 10.

The packing 9 has a magnet chamber 9
a, a stretchable portion 9b and a fixed portion 9c are formed, and vent holes 9d and 9e are formed in the upper and lower portions of the stretchable portion 9b, respectively. Therefore, when the lid 5 is closed with respect to the box body 4, the magnet chamber 9a comes into close contact with the outer box 2, but the ventilation holes 9d and 9e provided in the packing 9 allow the inside and the outside of the box body 4 to be closed. Will be vented.

Further, in this publication, the packing 9 is provided with a ventilation hole 9
It is also disclosed that the ventilation holes are directly formed on the side surface or the back surface of the box body instead of providing the d and 9e.

[0006]

However, in the above-mentioned conventional example, since the packing 9 is formed of a soft elastic material, the ventilation holes 9d and 9e are closed due to deterioration of the packing 9 over time, fatigue, etc. Distribution is damaged and the lid 5
There is a problem that can not be opened.

Further, when the ventilation holes 9d and 9e are formed in the packing 9 or when the ventilation holes are directly provided in the box body 4, there is a problem that the number of working steps is increased and the manufacturing cost is increased.

Further, according to the temperature change in the box body 4, a so-called breathing phenomenon occurs in which air enters and leaves the vent holes 9d and 9e. Particularly, in a freezer room of a freezer or a refrigerator, the breathing phenomenon occurs in the box body 4. In each case, the moisture in the air is cooled to form frost near the ventilation holes 9d and 9e, and when the frost is stacked, the lid 5 is pushed up to be half opened, or when the frost is severe, the lid 5 is damaged. There is a problem of doing.

An object of the present invention is to solve the above-mentioned problems, to provide a freezer / refrigerator in which a ventilation path is always secured and the manufacturing cost can be kept low.

[0010]

In order to achieve the above-mentioned object, a freezer / refrigerator according to the present invention comprises a lid body which is openably / closably provided at an opening of a box body for storing an object to be frozen / cooled. In a freezer / refrigerator equipped with a packing for sealing between an open end surface of a body, at least one portion of the lid body is provided with a ventilation path that bypasses the packing and communicates the inside and outside of the box body. Is characterized by.

[0011]

In the freezer / refrigerator of the present invention having the above-described structure, since the ventilation passage that bypasses the packing is provided in the lid, the shape of the ventilation passage is not changed even if the packing is deteriorated, and the lid is closed. Even when closed, air can easily enter and exit the inside and outside of the box through the ventilation passage.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail with reference to the embodiments shown in FIGS. 1 is a perspective view of the first embodiment in which the lid 12 is opened with respect to the box body 11, FIG. 2 is a cross-sectional view of the state in which the lid body 12 is closed with respect to the box body 11, and FIG. It is an expanded sectional view of a part.

For example, an inner box 14 having a storage chamber 13 is provided inside the chest type box body 11, and an outer box 15 is provided outside the inner box 14. Between the inner box 14 and the outer box 15, a cooling pipe 16 of cooling means (not shown) is provided.
And the heat radiating pipe 17 are arranged and filled with the heat insulating material 18, and the mouth member 1 is provided on the opening side of the inner box 14 and the outer box 15.
9 is attached. . Here, the cooling pipe 16 and the heat radiation pipe 17 are respectively arranged in a spiral shape, the cooling pipe 16 contacts the inner box 14 to cool the inner box 16, and the heat radiation pipe 17 contacts the outer box 15 to generate heat. It is designed to be released to the outside.

On the other hand, the lid body 12 has an inner lid 20 for opening and closing the opening of the box body 11, an outer lid 21 provided outside the inner lid 20, and between the inner lid 20 and the outer lid 21. It is composed of a filled heat insulating material 22. Then, these inner box 14, outer box 15, mouth member 19, inner lid 20 and outer lid 21.
A synthetic resin, a steel plate, or the like is used for the heat insulating material, and a synthetic resin such as hard polyurethane is used for the heat insulating material 18 and the heat insulating material 22.

The lid 12 is supported on the box 11 by hinges 23 and 24 so that the opening can be opened and closed. Each of the hinges 23 and 24 is configured such that a bracket 25 fixed to the upper portion of the box body 11 and an arm 26 fixed to the lid body 12 are supported by pins 27.

A packing fitting groove 31 having a dovetail-shaped cross section is formed along the peripheral edge of the inner lid 20, and the packing fitting groove 31 seals between the mouth member 19 and the inner lid 20. A packing 32 for fitting is fitted. In the packing 32, a fitting portion 32a having a dovetail-shaped cross section that is fitted into the packing fitting groove 31, an upper wall of the fitting portion 32a when fitted into the packing fitting groove 31, and a bottom of the packing fitting groove 31. A restricting portion 32b that restricts a wall interval, an expanding and contracting portion 32c that expands and contracts according to opening and closing of the lid body 12, and a contacting and separating portion 32d that contacts and separates from the mouth member 19 according to opening and closing of the lid body 12 are provided. There is.

The height of the fitting portion 32a of the packing 32 is regulated by the regulating portion 32b so that a predetermined space 33 is provided between the upper wall of the fitting portion 32a and the bottom wall of the packing fitting groove 31. Is provided. This allows
When the fitting portion 32a is fitted in the packing fitting groove 31 and the lid 12 is closed, the fitting portion 32a is pushed into the packing fitting groove 31 to prevent the packing 32 from falling off.

Further, the inner lid 20 near the hinges 23 and 24
As shown in FIG. 4, an air passage 34 communicating between the inside and the outside of the storage chamber 13 is provided so as to be orthogonal to the packing fitting groove 31 and bypass the outer periphery of the packing 32. That is, the lid body 12 has an outer lateral groove portion 34 a and an outer vertical groove portion 34 b that communicate the outside with the space 33, and an inner vertical groove portion 34 c and an inner lateral groove portion 3 that communicate the space 33 and the storage chamber 13.
4d is provided, and an air passage 34 is formed by these groove portions and the outer surface of the packing 32.

The ventilation passage 34 is provided to prevent the internal pressure of the storage chamber 13 from becoming lower than that of the outside so that the lid 12 cannot be opened, and has a diameter that does not adversely affect the cooling efficiency of the storage chamber 13. ing. Further, the ventilation passage 34 is provided in the vicinity of the hinges 23, 24 because the displacement of the lid 12 with respect to the box body 11 is smaller than that of the other portions, and the deformation of the ventilation passage 34 is kept small.

Further, the above-mentioned heat dissipation pipe 17 is arranged so as to come into contact with or approach the back side of the mouth member 19 at a position facing the ventilation passage 34. Note that if the heat dissipation pipe 17 is provided on the entire back side of the mouth member 19, heat will enter the storage chamber 13 more than necessary and deteriorate the cooling efficiency. Therefore, the heat dissipation pipe 17 faces the ventilation passage 34. It is preferable to dispose only at the positions where

Since this embodiment is constructed in this way, the inner box 14 is cooled by the cooling pipe 16 of the cooling means to cool the storage chamber 13, and the heat released from the cooling means passes through the heat radiation pipe 17. Is discharged from the outer box 15 to the outside and warms the portion of the mouth member 19 facing the ventilation passage 34. When the lid 12 is closed in such a state, the air in the storage chamber 13 is rapidly cooled and contracted, and the pressure inside the storage chamber 13 becomes a pressure lower than the outside, so-called negative pressure,
The lid 12 is temporarily adsorbed to the box 11.

However, due to the pressure difference between the inside and outside of the storage chamber 13, the outside air is allowed to pass through the outside lateral groove portion 34 of the ventilation passage 34.
a, outer vertical groove portion 34b, space 33, inner vertical groove portion 34c,
Then, it flows into the storage chamber 13 through the inner lateral groove portion 34d,
The pressure in the storage chamber 13 is balanced with the outside. This prevents the lid 12 from not opening. On the other hand, since the packing groove 34 is provided in the lid 12 and is preferably provided in the vicinity of the hinges 23 and 24, which have little fluctuation, even if the packing 32 deteriorates due to age, fatigue, or the like, the ventilation passage 34 is packed. It is not blocked by 32, and air circulation does not deteriorate.

When the lid 12 is closed, the cooling means operates intermittently in order to keep the temperature in the storage chamber 13 within a predetermined range, causing a breathing phenomenon in which air enters and leaves the storage chamber 13. However, the cooling means is activated and the storage chamber 1
When the air inside 3 contracts, the outside air flows into the ventilation passage 34.
When the air in the storage chamber 13 does not become a negative pressure and the cooling means stops and the air in the storage chamber 13 expands, the air flows through the ventilation path 34. It flows through to the outside and the pressure in the storage chamber 13 is kept constant.

Furthermore, due to the repeated inflow of air due to such a breathing phenomenon, as shown by the imaginary line in FIG.
Tends to adhere to the mouth member 19 constantly, but the mouth member 1
Generation of frost F is prevented by the heat of 9 or the attached frost F is melted by the heat of the mouth member 19. Therefore, the frost F does not push up the lid body 12 to deteriorate the cooling efficiency or damage the lid body 12.

FIG. 5 is a sectional view of the essential parts of the second embodiment.
The packing 41 has a fitting portion 41a, a restricting portion 41b, an expanding / contracting portion 41c, and a contacting / separating portion 4 which have the same functions as those of the first embodiment.
1d is provided, and on the upper wall of the fitting portion 41a,
The flexible piece 41e is provided integrally with the packing 41 so as to contact the bottom wall of the packing fitting groove 31 at a position where the flexible piece 41e communicates with the ventilation path 34. Here, the height of the flexible piece 41e is such that when the packing 41 is compressed, the flexible piece 41e completely contacts the bottom wall of the packing fitting groove 31 to close the ventilation passage 34, and the flexible piece 41e covers the lid body. The vent passage 34 is opened only when the pressure drop in the storage chamber 13 is large, such as when the valve 12 is opened immediately after it is closed.

As a result, immediately after the lid 11 is opened and closed, the air in the storage chamber 13 is greatly contracted and the pressure is reduced, so that the outside air causes the flexible piece 41e to move as shown in FIG. While flexing, it flows in the direction shown by the arrow to facilitate the opening of the lid body 12, and in the normal case, the flexible piece 41e closes the ventilation path 34 to maintain a good cooling effect in the storage chamber 13, and at the same time, to prevent moisture Prevents intrusion and reduces frost formation.

[0027]

As described above, the refrigeration system according to the present invention
Since the refrigerator has an air passage in the lid that bypasses the packing to connect the inside and the outside, even if the packing is deteriorated, the air passage is not blocked, and even if the lid is closed, air does not come from outside. It constantly flows into the inside and prevents the lid from opening due to the pressure difference.

If the ventilation passage is provided on the surface of the lid which contacts the packing, the manufacturing cost can be reduced as compared with the case where the ventilation passage is provided directly on the box.

[Brief description of drawings]

FIG. 1 is a perspective view of a first embodiment with a lid opened.

FIG. 2 is a cross-sectional view with a lid closed.

FIG. 3 is an enlarged sectional view of a B part.

FIG. 4 is a perspective view of a ventilation path.

FIG. 5 is a cross-sectional view of an essential part of the second embodiment.

FIG. 6 is an operation explanatory view.

FIG. 7 is a sectional view of a conventional example.

FIG. 8 is an enlarged sectional view of part A.

[Explanation of symbols]

 11 Box Body 12 Lid Body 13 Storage Room 16 Cooling Pipe 17 Radiating Pipe 19 Mouth Member 23, 24 Hinge 31 Packing Fitting Groove 32, 41 Packing 33 Space 34 Ventilation Path 41e Flexible Piece

Claims (4)

[Claims] 1. A freezer comprising a lid body that is openably and closably provided in an opening portion of a box body for storing an object to be frozen / cooled, and a packing for sealing a gap between the box body and the opening end surface of the box body.
The refrigerator / refrigerator according to claim 1, wherein at least one location of the lid body is provided with a ventilation path that bypasses the packing and communicates the inside and outside of the box body. 2. The freezer / refrigerator according to claim 1, wherein the ventilation passage is provided in the vicinity of a hinge for attaching the lid to the box so as to be openable and closable. 3. The freezer / refrigerator according to claim 1, wherein a heat radiating pipe of a compressor is provided near the box body near the air passage while the lid body is closed. 4. A flexible piece is provided so as to project from the packing into the air passage, and the flexible piece operates so as to close the air passage and open the air passage by a flow of air.
The refrigerator / refrigerator described in.