JPH06347160A - Refrigerator - Google Patents

Abstract

PURPOSE:To provide a refrigerator for which the attaching work of a lateral partitioning wall to partition the inside of an heat insulating box into an upper part and lower part to an internal box is simplified, and at the same time, the attaching strength of the lateral partitioning wall is improved. CONSTITUTION:The title refrigerator is equipped with an heat insulating box body with an opening on the front surface, which is formed of an internal box 7, external box and a foamed heat insulating material to be filled between both internal and external boxes, two lateral partitioning walls with a heat insulating property, which partition the inside of the heat insulating box body into 3 stages of a top, center and bottom to form a refrigerating chamber, freezing chamber and vegetable chamber from the top in this order, and groove parts 71, 72 which are formed at appropriate locations on the internal box 7 to fit in the right and left side surfaces and back surface of respective lateral partitioning walls. Then, a plurality of square holes 73 are formed on the groove parts 71, 72, and a plurality of claw parts being formed into a container shape with an entrance to fill a foamed heat insulating material, which are inserted in the square holes 73 on the groove parts, are formed on the right an and left side surfaces and back surface of respective lateral partitioning walls. Then, the internal box 7 under a condition in which the claw parts on respective lateral partitioning walls are inserted in the square holes 73 on the groove parts, is stored in the external box, and the foamed heat insulating material is filled between these internal and external boxes to form the heat insulating box body.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION In the present invention, a refrigerating room is formed above a freezing room and a vegetable room is formed below, and each room is cooled by forcibly circulating cold air. The present invention relates to the structure of a horizontal partition wall and an inner box of a refrigerator.

[0002]

2. Description of the Related Art (i) Japanese Patent Publication No. 60-21 prior to the present invention
311 gazette, (ii) Japanese Utility Model Publication No. 61-17343 gazette, and
(iii) Japanese Patent Publication No. Sho 60-39947 discloses a refrigerator in which a horizontal partition wall for partitioning the inner box into a top opening is attached to the inner box having a front opening. In addition, in (iv) Japanese Patent Application Laid-Open No. 3-267677, which precedes the present invention, a refrigerating compartment is formed above the freezing compartment, a vegetable compartment is formed below the freezing compartment, and cold air cooled by a cooler is stored in the freezing compartment and A refrigerator that circulates to the refrigerating room, in which the cool air sent to the refrigerating room is guided to the vegetable compartment via the return path for the refrigerating room, and the cool air introduced to the vegetable compartment is returned to the vegetable room (returning path). There is disclosed a refrigerator configured to return to a cooler chamber in which a cooler is arranged via a passage. The return path for the refrigerating room (return path) is formed in the back wall of the heat insulation box by using duct constituent members.

[0003]

In the refrigerator disclosed in the above publication (i), since the inner wall of the inner box holds the convex shape of the partition wall member, both of them adhere to each other without a gap, but the partition Since it is not possible to directly contact the foamed insulation with the convex shape of the wall member, there is some weakness in the strength of the mounting part of the partition wall member, making vacuum forming difficult and more efficient in terms of productivity than concave molding of the inner box. There was a problem that was not the target. On the other hand, the above (ii)
In the refrigerator shown in Fig. 2, a part of the foamed heat insulating material filled between the inner and outer boxes is a groove groove formed on the side surface (left and right back side surfaces) of the heat insulating partition wall from the through hole formed in the fitting recess of the inner box. Since it flows into the inside, the adhesion between the foam insulation and the side surface of the insulation partition wall is (i)
Although it is better than that, there is a weak defect in the biting strength of the heat insulating material because the bonding surface between the heat insulating partition wall and the heat insulating material is only surface contact. On the other hand, in the manufacturing method of the refrigerator of (iii), since the partitioning heat material is brought into close contact with the support rail of the inner box by the foaming pressure of the foam insulation material, the gap between this support rail and the partition wall is sealed. Although the sealing material to be used is not necessary, there is a problem similar to (i).

Further, in the refrigerator shown in (iv) above, since the refrigerating compartment return path is arranged in the heat insulating material of the back wall of the heat insulating box body, this refrigerating compartment return path is formed when the heat insulating box body is prepared. It is necessary to perform the filling work of the heat insulating material in a state where the duct member to be constructed is attached to the heat insulating material side surface of the inner box, the number of parts including the duct member and the sealing material is increased, and the work of attaching the duct member is It was troublesome and there was a problem that the duct member could not be replaced after the foaming work was completed. In addition, since the duct member is embedded in the heat insulating material, not only the heat insulating performance on the back wall of the heat insulating box is partially deteriorated as compared with other portions, but also the heat conduction from the duct member through which cool air passes. As a result, there is a possibility that dew may condense on the outer box, or moisture may leak into the heat insulating material from the connecting portion of the duct member or the like, thereby lowering the heat insulating performance of the heat insulating material.

SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a refrigerator which simplifies the work of mounting a horizontal partition wall for partitioning a heat insulating box body into upper and lower parts and improves the mounting strength of the horizontal partition wall.

Further, according to the present invention, the embedding of the duct member for circulating the cool air in the heat insulating material of the heat insulating box is stopped, and the portion surrounded by the inner box and the partition plate forming the front surface of the cooler chamber is utilized. It is an object of the present invention to provide a refrigerator having a duct (cold air passage) for introducing cold air from the uppermost storage chamber to the lowermost storage chamber.

[0007]

According to the present invention, there is provided a heat insulating box body having a front opening formed of an inner box, an outer box, and a foamed heat insulating material filled between the inner and outer boxes, and an inside of the heat insulating box body. Two horizontal partition walls having heat insulating properties for forming a refrigerating room, a freezing room, and a vegetable room in order from the top to the bottom in three middle and lower compartments, and the inner box for fitting the left and right side surfaces and the back surface of each horizontal partition wall In a refrigerator having a groove portion formed in a suitable place for circulating cold air cooled by a cooler in the refrigerating chamber and the freezing chamber, a plurality of holes are formed in the groove portion, and left and right side surfaces of the horizontal partition wall. And a state in which a plurality of container-like claw portions which are inserted into the holes of the groove portion and have an inlet for allowing the foamed heat insulating material to enter are formed on the back surface, and the claw portions of the horizontal partition wall are respectively inserted into the holes of the groove portion. Put the inner box of the inside in the outer box and put the foam insulation between these inner and outer boxes. Hama to is obtained so as to form a heat-insulating main body.

Further, according to the present invention, a heat insulating box body having a front opening formed of an inner box, an outer box and a foam heat insulating material filled between the inner and outer boxes, and the inside of the heat insulating box body are arranged in upper, middle, lower three stages. Two horizontal partition walls having heat insulating properties for forming three storage chambers, upper and lower partitions, and so as to be connected to the left and right side surfaces and the back surface of the inner box in order to fit the left and right side surfaces and the back surface of each horizontal partition wall. The two groove portions formed on the inner box and a partition plate which is arranged at a distance from a portion corresponding to one storage chamber of the inner box and which forms a cooler chamber for accommodating a cooler between the inner box and the portion. In the provided refrigerator, a plurality of holes are formed in each of the groove portions, and a plurality of container shapes are formed on the left and right side surfaces and the back surface of the horizontal partition wall, each of which has an inlet for inserting the foam insulation material into the hole of the groove portion. Forming claws and penetrating vertically in the rear part of the horizontal partition that is located directly below the cooler A duct part is formed, a cold air return passage extending in the front-rear direction is formed in the horizontal partition wall, and a duct part penetrating vertically is formed in the rear part of the remaining horizontal partition wall, which is surrounded by the inner box and the partition plate. A cold air passage that connects the two duct portions is formed at the open portion.

[0009]

According to the first aspect of the present invention, a container having a plurality of holes formed in the groove of the inner box, and having inlets which are inserted into the holes of the groove on the left and right side surfaces and the back surface of the horizontal partition wall and into which foamed heat insulating material enters Since a plurality of claw-shaped claws are formed, when the foamed heat insulating material is filled between the inner and outer boxes, the claws have an inlet through which the heat insulating material allows the heat insulating material to enter the claws (specifically, the container-shaped portion). As a result, the foaming growth of the heat insulating material by the claws is less likely to be hindered, and the heat insulating material is brought into contact with the periphery of the claws of the horizontal partition wall and the container-shaped part to prevent the claws from biting into the heat insulating material. And the mounting strength of the horizontal partition wall can be improved.

According to the second aspect, the cold air passage for guiding the cold air in the uppermost storage chamber (refrigerator in the embodiment) to the lowermost storage chamber (vegetable chamber) is provided in the middle storage chamber (freezing chamber) of the inner box. ) Can be formed by utilizing the part surrounded by the part corresponding to () and the partition plate forming the front of the cooler chamber, so special parts (duct members) for forming the cold air passage are abolished and the parts are shared. In addition, the assembling work can be simplified, and the duct mounting work in the back wall of the heat insulating box can be abolished and the heat insulating performance can be prevented from decreasing.

[0011]

Embodiments of the present invention will be described below with reference to FIGS. FIG. 1 is a vertical side view of a refrigerator, FIG. 2 is a vertical front view of essential parts for showing cold air circulation to a refrigerating compartment and a vegetable compartment of the present invention, and FIG. 3 is an upper portion of an upper container of a freezing compartment. FIG. 4 is a cross-sectional plan view in a state of being horizontally sectioned, and FIG.
6 is a sectional view taken along line VI-VI of FIG. 5, FIG. 5 is a sectional view taken along line VV of FIG. 3, FIG. 6 is a side view of the inner box as viewed from the left side, and FIG. FIG. 9 is a plan view of a partition member of the horizontal partition wall, FIG. 8 is a side view of the horizontal partition wall that separates the refrigerating compartment and the freezing compartment from the left side, and FIG. 9 is a horizontal partition that separates the freezing compartment and the vegetable compartment. 1 is a plan view of a partitioning member for a wall, and FIG.
Reference numeral 0 is a side view of a horizontal partition wall that divides the freezer compartment and the vegetable compartment, as viewed from the left side.

In FIG. 1, reference numeral 1 is a household refrigerator, and this refrigerator has a heat-insulating box body 2 having a front opening which constitutes the main body thereof.
And doors 3, 4, and 5 that close the opening of this box. The heat insulating box body 2 is formed of an inner box 7 made of synthetic resin, an outer box 8 made of metal such as a coated steel plate, and a foamed heat insulating material 9 such as foamed polyurethane resin filled between the inner and outer boxes. Door 3
Is a pivotable door corresponding to a refrigerating compartment 13 described later, and the door 4
Doors 4 and 5 correspond to the freezer compartment 14, and a door 5 corresponds to the vegetable compartment 15.

Reference numerals 11 and 12 denote horizontal partition walls that partition the inside of the heat insulating box 2 into upper, middle, and lower three stages. In this embodiment, the temperature above the horizontal partition wall 11 is a temperature at which food does not freeze (for example, about 3 ° C.). ), The refrigerating compartment 13 as the uppermost storage compartment,
A freezing compartment 14 as a middle-stage storage compartment that is cooled to a freezing temperature (for example, about -20 ° C) above the horizontal partition wall 12, and a temperature below the refrigerating compartment that is slightly higher than the temperature of the refrigerating compartment and is suitable for storing vegetables (for example, The vegetable compartment 15 is the lowest storage compartment that is cooled to about 7 ° C. Further, a container 16 as a lower container for storing frozen food is attached to the door 4, and a container 17 for mainly storing vegetables and fruits is attached to the door 5.

A partition plate 18 is arranged at the back of the freezer compartment 14, and a plate fin type evaporator 19 as a cooler and a blower 20 such as a propeller fan are arranged behind the partition plate 18.
Is formed in the cooler chamber 21.

Reference numeral 22 is for supplying the cool air cooled by the evaporator 19 to the freezing chamber 14 from the cool air outlet 22A and for supplying the cool air suction port 22B.
Is a refrigerating cold air duct for returning from the lower part to the lower part of the cooler chamber 21 (specifically, the lower part of the evaporator 19).
Is connected to a duct that penetrates the horizontal partition wall 11 and is connected to the evaporator 19
Reference numeral 24 denotes a cold air duct for refrigeration for supplying the cool air cooled by the cold air to the refrigerating compartment 13, and 24 communicates with the cold air duct 23 for refrigerating and distributes the cool air to the refrigerating compartment 13 through the outlets 24A and 24B. It is a distribution cold air duct. Reference numeral 25 denotes a damper device, which is a so-called shape memory damper, which is arranged in the middle of the cool air duct (specifically, the connecting portion between the cold air duct 23 for refrigeration and the cool air duct 24 for distribution).

A machine chamber 33, in which a compressor 31 and an evaporation tray 32 are arranged, is formed in the lower part and the rear part of the heat insulating box 2. Reference numeral 35 denotes a dew pan disposed below the evaporator 19, and 36 denotes a defrosting heater such as a quartz glass tube heater or a Vycor tube heater arranged between the dew pan 35 and the evaporator 19. The platinum-based ceramic deodorizing catalyst is laminated on the surface of the glass tube of the defrosting heater 36 and baked. With this defrosting heater 36, the compressor 3
During operation 1 (that is, during cooling operation), the odorous component of the cool air that returns to the lower side of the evaporator 19 is adsorbed, and heat is exchanged with the evaporator again as clean cool air from which the odorous component has been removed. Can be made. Also, the defrosting heater 3
6 is energized (that is, during defrosting operation), the odorous components adsorbed during cooling operation are oxidized and decomposed by a platinum-based catalyst to activate the catalyst layer of the defrosting heater 36 and generate clean air. can do. That is, the defrosting heater has a deodorizing purification function of adsorbing an odor component and oxidizing and decomposing the adsorbed odor component to produce clean cool air.

Reference numeral 37 denotes a horizontal partition wall which extends from a cold air suction port 37A formed in the front portion of the lower surface of the horizontal partition wall 12 to a return port 37B formed in the rear portion of the horizontal partition wall 12 and below the evaporator. 12 is a cold air return passage that extends in the front-rear direction inside 12. Reference numeral 38 is a water pipe for guiding defrost water from the dew tray 35 to the evaporation tray 32.

Here, the outlet 2 of the distribution cold air duct 24
The cool air introduced into the refrigerating compartment 13 from 4A and 24B cools the refrigerating compartment 13 and then guides the guide duct 42 from the refrigerating compartment return port 41 formed in the lower right part of the back when the refrigerating compartment 13 is viewed from the front. It is led out to a cool air passage 44, which will be described later, formed on the right side of the cooler chamber 21.

Reference numeral 43 denotes a protrusion formed vertically on the back wall portion of the inner box 7 corresponding to the freezer compartment 14. This protrusion 43
Is brought into contact with the back surface of the cooler cover 45 (more specifically, the positioning protrusion 46 formed on this back surface) as the second partition plate positioned behind the partition plate 18, and the space behind the cooler cover 45. Is divided into left and right. That is, the protrusion 4
3, a cooler chamber 21 is formed on the left side, and a cool air passage 44 described later is formed on the right side.

Then, the projection 43 and the cooler cover 45
One end of the portion surrounded by the inner box 7 and the guide box 42 of the refrigerating chamber 14 (specifically, a communication hole 84 as a duct portion formed in the horizontal partition wall 11 described later) is connected to the vegetable compartment 15 (details). Is a cold air passage 44 that leads cold air in the refrigerating compartment 13 to the vegetable compartment 15 by communicating with respective communicating holes 82) as ducts formed in the horizontal partition wall 12 described later. Therefore, the duct (that is, the cool air passage 44) for guiding the cool air from the refrigerating compartment to the vegetable compartment has a component (that is, the cooler cover 45) for forming the cooler compartment 21 at a predetermined position without using a special duct constituent member. Since it can be easily formed by attaching to, the number of parts can be reduced.
Further, since the cold air passage 44 is not buried in the heat insulating material 9, its assembling work performance is dramatically improved as compared with the conventional one, and the heat insulating performance of the back wall of the heat insulating box body 2 is partially ( There is no problem that the duct is buried).

Reference numeral 47 is a rail that is provided in the front-rear direction so as to face the upper portions of the left and right side walls of the inner box 7 corresponding to the freezer compartment 14 and supports an upper container 48, which will be described later, so that it can be freely taken in and out. The upper container 48 is partitioned left and right by a partition wall (not shown), and the left part is further partitioned front and back by a partition wall 50. And the compartment 51 on the right side has an intake 52 at the rear.
Is formed at the bottom and an intake 55 is formed at the rear of the left compartment 54. Also sections 54 and 56
A finger insertion port 57 for inserting and removing the container accommodated in each compartment is formed in the. The cold air outlet 22A of the partition plate 18 is formed at a position corresponding to the intakes 52 and 55 of the upper container 48, respectively. Reference numeral 58 is a small container made of metal (for example, aluminum) that is removably arranged in the compartment 51 of the upper container 48, and 59 is a resin ice tray with an upper opening that is also removably arranged in the compartment 54. ,
A resin ice storage container 60 is disposed in the compartment 56.
An upper surface opening of the ice tray 59 is closed by a lid 61 made of resin.

With the small container 58 placed in the compartment 51 of the upper container 48, the lower surface of the small container 58 and the upper container 48 are
A cold air passage 62 extending from the intake port 52 to the discharge port 53 is formed with the section 51 of the. That is, since the cold air passage 62 is formed using the space surrounded by the lower surface of the small container 58 and the compartment 51 of the upper container 48, a special duct for forming the cold air passage 62 is not required, and the inside of the freezing chamber is not required. The reduction of the effective storage volume can be suppressed to the minimum.

Further, the ice tray 59 is attached to the compartment 54 of the upper container 48.
In the state where the cold air passage 63 is arranged in the above state, the ice tray 59 and the section 54 of the upper container 48 form a cool air passage 63 extending from the intake 55 to the finger insertion port 57. That is, since the cold air passage 63 is formed using the space surrounded by the ice tray 59 and the compartment 54 of the upper container 48, a special duct for forming the cold air passage 63 is not necessary. Furthermore, since the ice tray 59 is covered with the lid 61 and the cold air cools the ice tray 59 only from the lower surface, the gap between the upper container 48 and the ice tray 49 (for details Insert container 57) to upper container 48
Since the cool air can be supplied also to the upper space and the lower container 16, the guide duct to the upper surface of the upper container 48 and the cool air guide duct dedicated to the lower container are not required, respectively, and the number of parts such as duct parts can be reduced.

Reference numeral 65 denotes a projection formed on the lower surface front part of the compartment 51 of the upper container 48 so as to face the inside of the lower container 16, and 66 denotes a projection when the upper container 48 and the lower container 16 are housed at predetermined positions. The hooking portion is formed on the upper portion of the lower container 16 so as to be located rearward by a predetermined distance of 65. That is, only the lower container 16 can be pulled out until the door 4 of the freezer compartment is pulled out by a predetermined distance, and when the door 4 is pulled out beyond this predetermined distance, the hook portion 66 of the lower container 16 is behind the protrusion 65 of the upper container 48. Therefore, both the upper and lower containers can be pulled out at the same time together with the door 4. Therefore, when the door 4 of the freezer compartment is pulled out by a predetermined distance or more, the upper container 48 is also pulled out together, so that the ice storage amount in the ice storage container 60 and the ice tray 59 are formed.
You can check the ice-making state of.

On the other hand, two continuous groove portions 71 and 72 are formed on the left and right side surfaces and the back surface of the inner box 7,
The left and right side surfaces and the back surface of the horizontal partition wall 11 are fitted into the groove portion 71, and the left and right side surfaces and the back surface of the horizontal partition wall 12 are fitted into the groove portion 72. Each groove 71 and 72
In order to insert the claw portions 85 formed on the side surfaces of the horizontal partition wall, which will be described later, a plurality of them (in this embodiment, three on each of the left and right side surfaces and four on the back surface, a total of 10 pieces). )
Square holes 73 are formed. From the standpoint of workability at the time of mounting the horizontal partition wall, the square hole on the back surface of the groove portion 72 is formed at a position slightly lower than the positions of the square holes 73 on the left and right side surfaces.
Further, in this embodiment, the square hole is formed in a square shape, but the square hole is not limited to another square shape.

On the other hand, since the components constituting the horizontal partition walls 11 and 12 are substantially the same, the same reference numerals indicate the same components, and the horizontal partition wall 12 for partitioning the freezer compartment 14 and the vegetable compartment 15 is taken as an example. Explained. The lateral partition wall 12 is a partition member 7 made of synthetic resin and having a container shape with one opening.
5 and the partitioning member 76, and a heat insulating material 77 such as styrofoam disposed between both members 75 and 76. In the assembled state of these parts, a gap between the groove 72 formed in the inner box 7 and the horizontal partition wall 12 (this gap becomes larger because the inner box 7 and the foamed heat insulating material 9 shrink during the cooling operation of the refrigerator). In order to block the space, the left and right side surfaces and the back surface of the horizontal partition wall 12 are closed-celled and have resilience, such as Epto Cedar (trade name) and Compliform (trade name).
A sealing material 78 such as is attached. In addition, the horizontal partition wall 11
And 12 (specifically, the partitioning member 75) have a reinforcing metal plate 80 arranged in the full width dimension on the front surface. The metal plate 80 is not only used as a reinforcing member for the horizontal partition wall, but also as a middle partitioning member. This board (a decorative board painted in the same color as the so-called outer box)
It also serves as a fixing member for a door hinge (both not shown).

A recess 79 for accommodating the metal plate 80 is formed on the front surfaces of the two partition members 75. In addition, a cooler 19 is provided at the rear of the partition upper member 75 of the horizontal partition wall 12.
A concave portion 81 as a dew tray for receiving dew and ice blocks (so-called defrost water together) is formed on the left side, and a communication hole 82 as a duct portion that penetrates vertically is formed on the right side thereof. Further, the partition upper member 75 of the horizontal partition wall 11
In the rear part, the cooler chamber 21 and the cool air distribution duct 24 are provided on the left side.
A communication hole 83 as a cold air duct for a refrigerating room which vertically penetrates so as to connect with the guide duct 42 and the cold air passage 4 is provided on the right side.
Communication holes 84 as a duct portion are formed so as to vertically connect so as to connect with each other.

On the left and right side surfaces and the back surface of the two partition members 76, a plurality of them are inserted into the respective square holes 73 of the groove portions 71 and 72 of the inner box 7 (in this embodiment, three on the left and right sides, and four on the back surface). (10 in total) are formed, and the claws 85 are in the form of a container having an upper surface opening having an inlet 86 for allowing the foamed heat insulating material 9 to enter. Also, the claws provided on the left and right side surfaces have a height of one claw part 85B on the rear side compared to the two claw parts 85A on the front side in consideration of the assemblability when the horizontal partition wall is attached to the groove part of the inner box. The size (depth to the heat insulating material side) is reduced. Further, the width dimension of the claw portion 85 is set to be slightly smaller than the width dimension of the square hole 73.
5 and a portion of the foam heat insulating material 9 leaks to the heat insulating material 77 side of the horizontal partition wall from a slight gap between the foam heat insulating material 9 and
By directly contacting (attacking) the heat insulating material 77 of the horizontal partition wall, the structural strength during molding is further improved.
The leaked foamed heat insulating material can be prevented by the sealing material 78 from leaking out from the gap between the horizontal partition wall and the inner box. Further, since two claw portions (not shown) are also formed on the back surface of the partitioning member 76 of the horizontal partition wall 11, the mounting (biting) strength on the back surface of the horizontal partition wall 11 is further improved, and It is possible to improve the strength of the bottom surface of the refrigerating compartment 13 on which food is easily placed.

The procedure for assembling the heat-insulating box 2 and the foaming work in the above structure will be briefly described. First, the assembled horizontal partition walls 11 and 12 are attached to the groove portion 7 of the inner box 7.
1 and 72 respectively. At this time, the partition member 7
The claw portion 85 formed on the back surface of 6 is inserted into the rectangular hole 73 of the groove portion, and subsequently, the claw portion 85B on the rear side of the left and right side surfaces to the claw portion 85A on the front side are sequentially inserted into the square hole 73. Since the height of the back claw is smaller than the height of the front claw,
This insertion work is easier than the case where the claw portions having the same height are formed. Next, parts such as the evaporator 19 and the defrosting heater 36 are assembled.

Then, the inner box 7 in which the respective parts are incorporated is housed in an outer box 8 bent in a gate shape, a bottom plate and a back plate (not shown) are attached, and (when necessary, a nest is inserted) to form a foaming jig. After being assembled, the stock solution of the foamed heat insulating material 9 is injected into the space formed between the inner and outer boxes from a heat insulating material injection hole (not shown) formed at a proper position of the outer box to foam. After a predetermined time, the heat insulation box 2 is completed by removing the jig and the insert.

Next, the cold air duct 23 for the refrigerating room and the cold air duct 24 for distribution are assembled, and the cooler cover 45 and the partition plate 18 are attached to the front surface of the cooler chamber 21. By attaching the cooler cover 45, a cold air passage 44 for guiding cool air from the uppermost storage chamber (that is, the refrigerating chamber) 13 to the lowermost storage chamber (vegetable chamber) 15 is formed.

As described above, a plurality of holes 7 are formed in the groove portion of the inner box 7.
3 to form a plurality of container-like claw portions 85 having an inlet 86 which is inserted into the hole 73 of the groove portion and into which the foamed heat insulating material 9 is inserted, on the left and right side surfaces and the back surface of the horizontal partition walls 11 and 12. During the filling of the foamed heat insulating material 9 between the inner and outer boxes, the inlet 86 of the claw portion 85 acts as an inlet for facilitating the heat insulating material to enter the claw portion (specifically, a container-shaped portion), Even if the flow path of foam growth of the foamed heat insulating material is slightly narrowed in the claw portion 85, the foam growth of the heat insulating material due to the presence of the claw portion is less likely to be hindered, and the periphery of the claw portion 85 and the container-shaped portion of the horizontal partition wall are prevented. The amount of biting of the claw portion 85 to the heat insulating material 9 can be increased by inflowing and contacting the heat insulating material with respect to the conventional case, and the attachment strength of the lateral partition walls 11 and 12 can be improved.

Further, a cold air passage 44 for guiding the cool air in the uppermost storage chamber (refrigerator compartment in the embodiment) 13 to the lowermost storage compartment (vegetable compartment) 15 is provided in the middle compartment of the inner box (freezer in the embodiment). (Chamber) 14 and a partition plate (cooler cover 45 in the embodiment) that constitutes the front surface of the cooler chamber 21 can be used to form the cooling air passage 44. It is possible to eliminate common parts (duct members) and to share parts and simplify assembly work.
It is possible to abolish the work of installing ducts in the back wall of the and reduce deterioration of heat insulation performance.

[0034]

According to the first aspect of the present invention, a plurality of holes are formed in the groove of the inner box, and the left and right side surfaces and the back surface of the horizontal partition wall are provided with the inlets which are inserted into the holes of the groove and into which the foamed heat insulating material enters. Since multiple claws in the shape of a container are formed, when filling the foam insulation between the inner and outer boxes, the heat insulating material enters the claw (more specifically, the container-shaped portion) at the entrance of the claw. It acts as a mouth to prevent the foaming growth of the heat insulating material by the claws, and makes it easier to contact the heat insulating material around the claws of the horizontal partition wall and the container-like part to prevent the claws from biting into the heat insulating material. Can be increased more than in the past, and the attachment strength of the horizontal partition wall can be improved.

According to the second aspect, the cold air passage for guiding the cool air in the uppermost storage chamber (refrigerating chamber in the embodiment) to the lowermost storage chamber (vegetable chamber) is provided in the middle storage chamber (in the embodiment). Since it can be formed by using the part surrounded by the part corresponding to the freezing chamber) and the partition plate that constitutes the front surface of the cooler chamber, special parts (duct members) for forming the cold air passage are eliminated. The parts can be shared and the assembling work can be simplified, and the installation work of the duct in the back wall of the heat insulation box can be abolished and the heat insulation performance can be prevented from being deteriorated.

[Brief description of drawings]

FIG. 1 is a vertical sectional side view of a refrigerator.

FIG. 2 is a vertical cross-sectional front view of essential parts for showing the circulation of cold air to the refrigerator compartment and the vegetable compartment of the present invention.

FIG. 3 is a cross-sectional plan view showing a state in which the upper container of the freezer compartment is horizontally sectioned.

4 is a sectional view taken along line VI-VI of FIG.

5 is a sectional view taken along line VV of FIG.

FIG. 6 is a side view of the inner box as viewed from the left side.

FIG. 7 is a plan view of a partition lower member of a horizontal partition wall that partitions a refrigerating room and a freezing room.

FIG. 8 is a side view of a horizontal partition wall that divides a refrigerating room and a freezing room from the left side.

FIG. 9 is a plan view of a partition lower member of a horizontal partition wall that partitions a freezer compartment and a vegetable compartment.

FIG. 10 is a side view of a horizontal partition wall that partitions the freezer compartment and the vegetable compartment, as viewed from the left side.

[Explanation of symbols]

 1 Refrigerator 2 Insulation box 7 Inner box 8 Outer box 9 Foam insulation 11,12 Horizontal partition wall 13 Refrigerator (top storage room) 14 Freezer (middle storage room) 15 Vegetable room (bottom storage room) ) 18 partition plate 19 evaporator (cooler) 21 cooler chamber 37 vegetable room cold air return passage (cold air return passage) 44 cold air passage 45 cooler cover (divider plate) 71, 72 groove 73 square hole (hole) 75 partition Member 76 Partitioning member 77 Heat insulating material 79 Recess 80 Metal plate (reinforcing member) 82, 84 Communication hole (duct) 85 Claw 86 Inlet

 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Hiroyuki Yamakawa 2-18 Keihan Hondori, Moriguchi City, Osaka Sanyo Electric Co., Ltd.

Claims (2)

[Claims] 1. A heat-insulating box body having a front opening formed of an inner box, an outer box, and a foamed heat-insulating material filled between the inner and outer boxes, and the inside of the heat-insulating box body is divided into upper, middle, and lower three stages from above. Refrigerating room,
A cooler comprising two horizontal partition walls having a heat insulating property for forming a freezer compartment and a vegetable compartment, and a groove portion formed in an appropriate position of the inner box for fitting the left and right side surfaces and the back surface of each horizontal partition wall. In a refrigerator configured to circulate the cool air cooled by the refrigerating chamber and the freezing chamber, a plurality of holes are formed in the groove portion, and the left and right side surfaces and the back surface of the horizontal partition wall are inserted into the hole of the groove portion and foamed. Forming a plurality of container-shaped claw portions having an inlet for allowing the heat insulating material to enter, and accommodating the inner box in a state in which the claw portions of the horizontal partition wall are respectively inserted into the holes of the groove portions are stored in the outer box, A refrigerator characterized in that a foam insulation material is filled between an inner box and an outer box. 2. A heat-insulating box body having a front opening formed of an inner box, an outer box, and a foamed heat-insulating material filled between the inner and outer boxes, and the inside of the heat-insulating box body being divided into upper, middle, and lower three stages. Two horizontal partition walls having heat insulating properties for forming the lower three storage chambers, and formed so as to be continuous with the left and right side surfaces and the back surface of the inner box for fitting the left and right side surfaces and the back surface of each horizontal partition wall Refrigerator provided with two groove portions and a partition plate which is arranged at a distance from a portion corresponding to one storage chamber of the inner box and forms a cooler chamber for accommodating a cooler between the inner box and the compartment. In, a plurality of holes are formed in each of the groove portions, and a plurality of container-like claw portions that are inserted into the holes of the groove portions on the left and right side surfaces and the back surface of the horizontal partition wall and have an inlet for allowing foamed heat insulating material to enter are formed. Formed,
A duct part penetrating vertically is formed in the rear part of the horizontal partition wall located directly below the cooler, a cool air return passage extending in the front-rear direction is formed in this horizontal partition wall, and it is vertically penetrating in the rear part of the remaining horizontal partition wall. The refrigerator is characterized in that a cold air passage for connecting the two duct portions is formed in a portion surrounded by the inner box and the partition plate.