JP3440025B2 - refrigerator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To contrive reduction of the cost and assembly man-hours in a duct structure of a cold room. SOLUTION: Reduction of the costs and assembly man-hours are enabled by forming a cold air delivering route 53 by edge expansion parts of a duct board 54 made of expanded polystyrene having an approximately U-shaped section being fitted and fixed to an undercut-shaped recess 55 formed on an inner box 23 and having a simple air duct constitution without seal parts and duct board-fixing parts.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to an air passage structure in a refrigerator.

[0002]

2. Description of the Related Art In recent years, a duct device having an air duct structure of a refrigerator has been simplified in terms of its components and assemblability when installed in the refrigerator.

A conventional duct device provided in a refrigerator is disclosed in Japanese Utility Model Publication No. 51-4369.

The conventional refrigerator will be described below with reference to the drawings.

FIG. 6 is a front view of a conventional refrigerator. Figure 7
FIG. 4 is a vertical sectional view of a conventional refrigerator. FIG. 8 is a sectional view of the conventional refrigerator taken along the line AA in FIG. 6 to 8, 1 is a refrigerator outer box, 2 is a refrigerating compartment box that forms a refrigerating compartment 3, and 4 is a freezing compartment box that forms a freezing compartment 5 installed therebelow. Each inner box is formed as a separate body and then appropriately fixed in the refrigerator outer box 1 with screws or the like. Reference numeral 6 is a heat insulating material filled between each inner box and the refrigerator outer box 1. Reference numeral 7 denotes a refrigerating compartment outlet duct for guiding the cold air in the refrigerating compartment to the upper part of the refrigerating compartment. As shown in detail in FIG. 8, a convex part 8 is formed on the refrigerating compartment box 2, and a heat insulator 9 such as foam installed on the back surface of the convex part 8 and It is composed of a duct plate 10 made of a steel plate screwed to the refrigerating compartment box 2 via the heat insulator 9. Reference numeral 11 is a freezing room cold air inlet, and 12 is a cold air outlet. Further, 13 is a refrigerating compartment suction duct, 14 is a refrigerating compartment air inlet, and 15 is a refrigerating compartment air outlet. Reference numeral 16 is a cooler chamber provided in a superposed state in the front part of the refrigerating chamber suction duct 13, 17 is a cooler, 18 is a freezing chamber cold air intake port, and 19 is a freezing chamber cold air blowing port. 20 is a fan driven by a fan motor.

Regarding the refrigerator constructed as described above,
The operation will be described below.

First, the cold air cooled by the cooler 17 is first blown into the freezer compartment 5 from the freezer compartment cool air outlet 19 of the cooler compartment 16, circulates as shown by the solid arrow, and again the cooler compartment 1
6 is sucked from the freezing room cold air suction port 18 below. On the other hand, a part of the cool air blown into the freezer compartment 5 enters the blow-out duct 7 from the cold air inlet 11 as shown by the broken line arrow, and the cold air outlet 12
Through the cold storage chamber 3 into the suction duct 13 from the cold storage chamber air inlet 14 through the cold storage chamber air inlet 14 and then from the lower part of the cooler chamber 16 through the cold storage chamber air outlet 15. The chambers 3 and 5 are kept at an appropriate temperature.

[0008]

However, in the above conventional structure, since the duct plate 10 is provided in the heat insulating material 6, the heat insulating body 9 is required as a sealing member, and the refrigerating chamber blowing duct 7 is also required. If the total height of the above is increased, the number of heat insulators 9 is increased correspondingly, which causes a cost increase. Furthermore, since the duct plate 10 is fixed to the refrigerating compartment box 2 by screws, the number of assembling steps also increases,
In order to secure the sealing property between the duct plate 10 and the refrigerator compartment box 2, it is necessary to increase the number of screws.
There was a drawback that it led to an increase in assembly man-hours.
Further, since the duct plate 10 is made of a steel plate, the weight as a single item also increases, and the weight of the refrigerator main body also increases, so that there is a drawback that the duct plate 10 and the refrigerator main body lack transportability.

Further, since the temperature of the cool air in the duct 7 is low and the length is long, the duct 7 is easily exposed to dew, and the duct plate 10 made of a steel plate is an expensive material for preventing rust.

Further, the arrangement of the refrigerating compartment outlet duct 7 and the refrigerating compartment suction duct 13 is not particularly considered, and the cold air outlet 12 is provided.
There is a drawback that the cold air passing through from the cold storage chamber to the air inlet 14 is not circulated in the entire cold storage chamber 3 and uneven cooling temperature occurs in the room.

Further, although not shown, when an indoor illumination lamp for illuminating the inside of the refrigerating compartment 3 is attached, if the indoor illumination lamp is arranged at any place in the refrigerator, the temperature of the room rises and the peripheral parts are thermally deformed due to heat generation of the indoor illumination lamp. There was a case where it had an influence. Further, in the case of providing an automatic ice making device in the freezing compartment 5, if the arrangement of the water supply pipe from the water supply tank provided in the refrigerating compartment 3 to the ice making machine is arbitrarily performed, the effect of convective cold air and temperature distribution in the room As a result, residual water in the water supply pipe may freeze and cause water supply failure.

The present invention solves the conventional problems, and an object of the present invention is to provide a refrigerator in which the cost of the duct portion and the number of assembling steps are reduced, and the refrigerator can be efficiently cooled while effectively securing the volume of the storage chamber. .

It is another object of the present invention to provide an arrangement of indoor lighting lamps which eliminates the influence of heat on the room and peripheral parts.

It is another object of the present invention to provide a water supply pipe arrangement of an automatic ice making device which can prevent water supply troubles due to freezing.

[0015]

In order to achieve this object, the present invention is to form a ventilation path by engaging a recess formed in an inner box of a refrigerator main body with a duct plate.

Thus, the air passage can be constructed with a simple structure.

Further, according to the present invention, the tip end inflating portion of the duct plate having a substantially U-shaped cross section is fitted and fixed in the recess formed by the undercut molding of the inner box.

As a result, the sealing member and the fixing member in the duct portion can be eliminated, and the cost and the number of assembling steps can be reduced.

Further, according to the present invention, the ventilation passage is formed as a cooling air discharge passage in the vertical direction on one of the left and right sides of the rear surface of the storage chamber, and has the cooling air suction passage formed in the other side in the vertical direction. is there.

As a result, the cooling distribution is made uniform while ensuring the depth capacity in the storage chamber with a simple air passage structure.

Further, according to the present invention, the duct plate forming the cool air discharge air passage is constructed so as to pass through the partition wall and communicate vertically with the cooler chamber.

Thus, by eliminating the connecting portion with the duct in the partition wall, the seal member at the connecting portion can be eliminated, and the cost and the assembly man-hour can be reduced and the cold air leakage can be prevented.

Further, according to the present invention, an indoor illumination lamp is installed in the cold air intake air passage of the refrigerating room.

As a result, it is possible to suppress the temperature rise due to the heat of the room lighting and the thermal influence of the peripheral parts.

Further, according to the present invention, a water supply pipe for ice making is installed in the cold air intake air passage.

As a result, it is possible to prevent the freezing of the water in the ice making water supply pipe.

[0027]

BEST MODE FOR CARRYING OUT THE INVENTION The invention according to claim 1 of the present invention is formed by undercut molding an inner box of a heat insulating box.
Two rows of recesses and foamed polystyrene formed in a U-shaped cross section
And a U-shaped tip of the duct plate.
Form an inflated part at the end, and connect the inflated part to the two recesses.
By press-fitting and fixing in close contact, without using sealing material
Make sure that the cool air does not leak from the recess and
The ventilation path is formed by
The expanded part of the duct plate is fitted into the cut part so that the duct plate
It is fixed to the box to form a ventilation passage, preventing cold air leakage.
It In addition, due to the moderate restoration of expanded polystyrene, the inner box recess
It is closely fitted with and also exhibits the heat insulation effect of the air passage.

[0028]

According to a second aspect of the present invention, the heat-insulating box is divided into a heat-insulating partition wall to define a refrigerating chamber in the upper part and a freezing chamber in the lower part, and a cooler of the refrigeration cycle and forced ventilation are provided in one part of the freezing chamber. A cooler chamber in which a blower is arranged, a cool air discharge air passage for discharging cool air cooled by the cooler into the refrigerating chamber by the blower, and a cool air suction wind for returning cool air circulating in the refrigerating chamber to the cooler. A passage, an automatic ice making device provided at an upper portion of the freezing chamber, a water supply tank arranged at a lower portion of the refrigerating chamber, and an ice making water supply pipe for supplying water from the water feeding tank to the automatic ice making device. The cold air discharge air passage is provided in the vertical direction on any one of the left and right sides of the rear surface of the refrigerating chamber, the cold air suction air passage is provided on the other side, and the ice making water supply pipe exits from the water supply tank. Placed in the cold air intake air passage The water supply pipe for ice making, which is to be inserted into the heat insulating partition wall and guided to the automatic ice making device and which is a route to be led from the water supply tank to the ice making device, is in the cold air intake air passage after circulating through the refrigerating chamber. Because there is, the water in the water supply pipe does not freeze.

[0030]

[0031]

[0032]

[0033]

[0034]

Embodiments of the refrigerator according to the present invention will be described below with reference to the drawings.

(Embodiment 1) FIG. 1 is a front view of a refrigerator according to Embodiment 1 of the present invention. FIG. 2 is a vertical sectional view of FIG. FIG. 3 is a sectional view taken along line BB in FIG. FIG. 4 is a sectional view taken along line CC of the refrigerator according to the embodiment of the present invention. FIG. 5 is a sectional view DD of the refrigerator according to the first embodiment of the present invention.
It is a figure. In FIGS. 1 to 5, 21 is a heat insulating box constituting the refrigerator body, 22 is an outer box, 23 is an inner box, and 24 is a heat insulating material filled between the outer box 22 and the inner box 23. The inside of the inner box 23 is divided into a refrigerating room 27, a vegetable room 28, and a freezing room 29 by partition plates 25 and 26.
The partition wall 26 divides the vegetable compartment 28 and the freezing compartment 29, and is filled with a heat insulating material (for example, expanded polystyrene or expanded polyurethane). A plurality of shelves 30 are provided in the refrigerating chamber 27 at appropriate intervals, and a plurality of storage compartments 31 are formed between the shelves 30. Three
Reference numeral 2 denotes a low temperature room provided in the lower part of the refrigerating room 27, which is provided with a storage container 33 and mainly stores fresh food such as meat and seafood at a temperature below the refrigerating room (eg, chilled at about 0 ° C. or about −3 ° C.).
(Partial freezing, etc.)

Reference numeral 34 is a revolving door attached to the opening surface of the refrigerating chamber 27 so as to be openable and closable.

Reference numeral 35 denotes a drawer type door that is attached to the opening surface of the vegetable compartment 28 so as to be openable and closable, and is configured so that the indoor storage container 36 can be integrally withdrawn. Again 37
Is a drawer-type door that is openably and closably attached to the opening surface of the freezer compartment 29, and is configured so that the storage container 38 on the indoor side can be integrally withdrawn. A second storage container 39 is provided above the storage container 38 so as to be movable in the front-rear direction.

Reference numeral 40 denotes a machine room formed in the lower part of the heat insulating box 21, which is behind the freezing room 29 and is the compressor 4 of the refrigeration cycle.
1. A cooler 43 arranged in parallel in the left-right direction via the compressor 41 and the heat insulating wall 42 of the heat insulating box 21 is arranged, and a condenser 44 is stored below the freezer compartment 29. .
Reference numeral 45 designates an evaporation tray for evaporating defrost water, which is arranged below the cooler 43, so that the condenser pipe 44a from the compressor 41 to the condenser 44 is immersed in the stored defrost water. It is located in. Reference numeral 46 denotes a blower provided in the machine room 40 for forced ventilation to promote air convection to the compressor 41, the condenser 44, and the evaporation tray 45.

Reference numeral 47 is an air inlet opening to the front of the machine chamber 40 for taking in air to the condenser 44 side, and 48 is an air outlet opening to the front of the machine chamber 40, The air inlet 47 and the air outlet 4
Each ventilation passage communicating with 8 is partitioned by a partition plate 49. Then, the air is forced by the blower 46 so that the air is sucked into the air intake port 47, the condenser 44, the evaporating dish 45,
The compressor 41 and the air discharge port 48 are configured to flow sequentially.

Reference numeral 50 is a blower located above the cooler 43 for forced ventilation. Reference numeral 51 denotes a damper device that is provided in parallel with the blower 50 in the left-right direction and is provided above the compressor 41, and controls the amount of cold air supplied to the refrigerating compartment 27, the vegetable compartment 28, and the low temperature compartment 32. Reference numeral 52 denotes a cooler chamber in which the cooler 43 is arranged. At least the cooler 43, the blower 50, and the damper device 51 are arranged in the cooler chamber 52, and a front storage chamber (for example, a freezer chamber). 29).

Reference numeral 53 is a cool air discharge air passage for guiding cool air from the damper device 51 to the refrigerating chamber 27 and the low temperature chamber 32, and the duct plate 54 forming the cool air discharge air passage 53 is a heat insulating material (for example, polystyrene foam or the like). ), Which is a member having a substantially U-shaped cross section, and which engages with the duct plate 54.
Is formed with two recesses 55 in the vertical direction.
5 is fixed so that cold air does not leak from the recess 55 when the duct plate 54 is fitted.

Here, as the shape of the recess 55, for example, the inner box 23 is formed in a so-called undercut shape having an inner size larger than the frontage of the inlet, and the U-shaped tip of the duct plate 54 is fitted to the inner box 23. The expansion portion 54a is formed on the portion and is inserted to be firmly fixed.

Further, the cold air discharge air passage 53 communicates one end portion of the inner surface of the inside of the refrigerator in the vertical direction, and is covered by the back decorative plate 56 in the refrigerating chamber 27 to be stored in the plurality of storage compartments 31. A cold air discharge port 57 that opens is provided. 58 is a low temperature room 32
It is a cold air discharge port that opens to the.

Reference numeral 59 is an air circulation blower provided above the refrigerating chamber 27. Reference numeral 60 denotes an air discharge air passage provided on the top surface of the refrigerating chamber 27, which communicates with the discharge side of the air circulation blower 59, and 61 denotes an air discharge air outlet opening to the refrigerating chamber 27 at the tip of the air discharge air passage 60. It is the exit. Reference numeral 62 denotes an air suction air passage which is formed on the back surface of the rear decorative plate 56 and communicates with the suction side of the air circulation blower 59. Reference numeral 63 is an air intake port that opens in the rear decorative plate 56 at an appropriate position in the refrigerating chamber 27 corresponding to the air intake air passage 62.

Reference numeral 64 denotes a refrigerating room 27, a vegetable room 28, a low temperature room 3
2 is a cold air suction air passage for returning the cool air that has cooled the air 2 to the cooler 43, and one end portion on the one side of the inner surface of the interior facing the cold air discharge air passage 53 is communicated in the up-down direction to perform refrigeration. Inside the chamber 27, there is provided a cold air suction port 65 which is covered with the rear decorative plate 56 and opens into the plurality or one of the storage compartments 31.

Reference numeral 66 is a cold air suction port which is opened in the inner surface of the vegetable compartment 28 and merges with the cold air suction air passage 64.

Reference numeral 67 denotes an indoor illumination lamp, which is provided with an illumination cover 68 on the surface thereof. The illumination cover 68 is semitransparent and has a curved shape inside the refrigerating chamber 27, and can be attached to and detached from the rear decorative plate 56. Is installed as.

Reference numeral 69 denotes a water supply tank disposed in the lower portion of the refrigerating compartment 27, which is connected to an automatic ice making device 70 provided in the freezing compartment 29 by an ice making water supply pipe 71.

Reference numeral 72 is a communication port provided in front of the partition plate 25. Reference numeral 73 is a cool air discharge opening into the freezer compartment 29, which is opened in front of the blower 50. Reference numeral 74 is a cold air suction port provided in the lower portion of the deep surface of the freezer compartment 29 and communicating with the lower end of the cooler 43. Reference numeral 75 denotes a duct plate having a substantially U-shaped cross section in which the cool air intake air passage 64 is formed so as to pass through the rear of the cooler 43 and return using the entire left and right width of the cooler 43.

Reference numeral 76 is a temperature detector provided on the inner surface of the freezing compartment 29 for detecting the temperature in the freezing compartment, and 77 is the refrigerating compartment 2.
7 is a temperature detector which is provided on the inner surface of 7 to detect the temperature in the refrigerator compartment.

The operation of the refrigerator constructed as described above will be described below.

First, when the temperature detected by the temperature detector 76 in the freezer compartment 29 is higher than the set value, the compressor 41 constituting the refrigeration cycle operates and the cool air cooled by the cooler 43 is forcedly ventilated by the blower 50. Then, the freezing chamber 29 is discharged from the cold air discharge port 73 to the freezing chamber 29 and then returned to the cooler 43 from the cold air suction port 74. When the temperature detected by the temperature detector 76 becomes lower than the set value by repeating this cold air circulation, the compressor 41 is stopped, and thereafter, this operation is repeated to maintain the freezing chamber 29 at a predetermined freezing chamber temperature (for example, -18 ° C). To be done.

When the temperature detected by the temperature detectors 76, 77 is higher than the set value, the damper device 51 is opened and the cool air cooled by the cooler 43 is forcedly ventilated by the blower 50, and a part of it is in the freezer compartment. Cold air discharge port 73 discharged to 29
The remaining cool air is led to the cool air discharge air passage 53 through the opened damper device 51, and a part of the remaining cool air is discharged from the cool air discharge port 58 to the low temperature chamber 32 to a predetermined chilled temperature (for example, 0 ° C). The cold air that has circulated in the low temperature chamber 32 is guided to the communication port 72 provided in front of the partition plate 25 that separates the low temperature chamber 32 and the vegetable chamber 28, and indirectly cools the inside of the storage container 36 of the vegetable chamber 28, and then cool air. Is guided to the cool air suction port 66, merges with the cool air suction air passage 62, and returns to the cooler 43. As a result, the vegetables in the storage container 36 are maintained at a predetermined vegetable room temperature (eg, 6 ° C.).

The remaining cool air is discharged from the cool air discharge port 57 into the cold storage chamber 27 through the cool air discharge air passage 53 and is maintained at a predetermined cold storage chamber temperature (for example, 4 ° C.). After the discharged cool air circulates in the refrigerating chamber 27, a part of the cool air is guided from the cool air suction port 63 to the cool air suction air passage 64 and returned to the cooler 43. Intake duct 75 forming the cold air intake air passage 64
The cold air that passes through is uniformly exchanged with the cooler 43, and uneven frost formation can be reduced.

The remaining cool air circulated in the refrigerating chamber 27 flows into the air suction air passage 62 from the air suction port 63, passes through the indoor illumination lamp 67, and is then discharged from the ceiling surface by the air circulation blower 59. The air is discharged from the air discharge port 61 to the upper front surface of the refrigerating chamber 27 through the air passage 60. Further, the air circulation blower 59 is adjusted in accordance with the opening period of the damper device 51.
In addition, after the opening of the door 34 of the refrigerating compartment, the operation is performed for a certain time.

As described above, regarding the combined structure of the duct plate 54 and the recess 55 of the inner box constituting the cool air discharge air passage 53, the tip end inflating portion 54a of the duct plate is press-fitted and fitted into the undercut shape of the recess 55. Therefore, the duct plate 54 is fixed in close contact without coming off. In particular, since the duct plate 54 is formed of expanded polystyrene having an appropriate degree of restoration, it cannot be easily removed by pushing it into the undercut portion.

Therefore, unlike the conventional case, a member for fixing the duct plate 54 and a sealing member are not required, so that the cost can be reduced and the number of assembling steps can be reduced. Further, the duct plate 54 itself is made of expanded polystyrene, and the cold air discharge air passage 53
Can be insulated. It also contributes to the weight reduction of the refrigerator.

Since the cool air discharge air passage 53 is directly connected to the upper side of the damper device 51 and has a structure with a small air flow resistance, the cooling efficiency is high. In addition, since it is not necessary to connect the air passages at the partition walls 25 and 26 as in the conventional case, a sealing member for the connection is not required, and cost reduction and assembly man-hours can be achieved. Also, there is no concern about cold air leakage.

Further, in the refrigerating chamber 27, the discharged cool air flows from the plurality of vertically arranged cool air discharge ports 57 to the air suction port 63 so as to traverse the room, so that uneven cooling of the entire room is suppressed. .

Further, the cool air discharge air passage 53 and the cool air suction air passage 6 are provided.
Since 4 is arranged on the left and right sides of the back of the refrigerating compartment 27, the air passage does not travel to the center of the compartment, which has the highest storability, and the effective volume of the depth of the refrigerating compartment 27 is increased to improve usability.

Further, since the indoor illumination lamp 67 of the refrigerating room is arranged in the cold air intake air passage 64, the heat generation of the indoor illumination lamp 67 does not directly affect the inside of the refrigerating room 27 and the rise of the indoor temperature can be suppressed. it can. Further, since it is in the ventilation path and does not retain heat, it is possible to eliminate thermal influences such as thermal deformation of peripheral parts of the indoor lighting 67.

Further, the ice making water supply pipe 72 is fixedly arranged in the suction duct 75 which forms the cool air suction air passage 64 after coming out of the water supply tank 69, and is inserted and fixed in the partition plate 26 which is a heat insulating wall so as to be frozen. Automatic ice-making device 7 on top of
Since it is guided to 0, the portion where the water supply pipe 71 for ice making is arranged is always a positive temperature zone space, so that the water in the water supply pipe 71 does not freeze.

Although the discharge duct has been mainly described in this embodiment, the basic structure of the duct can be applied to the suction duct side.

[0064]

As described above, the invention according to claim 1 is formed by undercut molding the inner box of the heat insulating box.
2 recesses and foamed poly-polycarbonate with a U-shaped cross section
A duct plate made of chilene, and the U-shape of the duct plate
An inflatable portion is formed at the tip portion, and the inflatable portion is formed into the double recessed portion.
By press-fitting into and tightly fixing, no sealant is used.
The inner box and the
Ventilation path is formed by the duct plate, and ventilation is simple
Forming a passage and sealing and fixing in the duct part
Parts can be abolished, cost reduction and assembly man-hour reduction
Can be achieved. In addition, with proper restoration,
Adhesion is enhanced and cold air leakage from the recess can be prevented. Well
In addition, it exerts the heat insulation function of the air passage and contributes to weight reduction.

[0065]

According to a second aspect of the present invention, the heat-insulating box is divided into a heat-insulating partition wall to define a refrigerating chamber in the upper part and a freezing chamber in the lower part. A cooler chamber in which a blower is arranged, a cool air discharge air passage for discharging cool air cooled by the cooler into the refrigerating chamber by the blower, and a cool air suction wind for returning cool air circulating in the refrigerating chamber to the cooler. A passage, an automatic ice making device provided at an upper portion of the freezing chamber, a water supply tank arranged at a lower portion of the refrigerating chamber, and an ice making water supply pipe for supplying water from the water feeding tank to the automatic ice making device. The cold air discharge air passage is provided in the vertical direction on any one of the left and right sides of the rear surface of the refrigerating chamber, the cold air suction air passage is provided on the other side, and the ice making water supply pipe exits from the water supply tank. Placed in the cold air intake air passage The thermal insulation in partition wall is inserted which is guided to the automatic ice maker, it is possible to prevent freezing of water in the water supply pipe, it is possible to supply stable water to the automatic ice making device.

[0067]

[0068]

[0069]

[0070]

[Brief description of drawings]

FIG. 1 is a front view of a refrigerator according to a first embodiment of the present invention.

FIG. 2 is a vertical sectional view of the refrigerator according to the first embodiment of the present invention.

FIG. 3 is a sectional view taken along line BB of FIG.

FIG. 4 is a sectional view taken along line CC of FIG.

5 is a cross-sectional view taken along line DD of FIG.

FIG. 6 is a front view of a conventional refrigerator.

FIG. 7 is a vertical sectional view of a conventional refrigerator.

8 is a sectional view taken along the line AA of FIG.

[Explanation of symbols]

21 Thermal insulation box 23 Inner Box 25 partition walls 26 partition walls 27 Cold room (storage room) 29 Freezing room (storage room) 43 Cooler 52 Cooler room 53 Cold air discharge air passage (ventilation passage) 54 Duct board (expanded polystyrene) 54 Expansion part 55 recess 64 Cold air intake air passage 67 Interior lighting 71 Ice making water supply pipe

─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-8-152254 (JP, A) JP-A-9-138050 (JP, A) JP-A-9-79729 (JP, A) Actual development 64- 22982 (JP, U) Actual development Sho 62-22488 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) F25D 17/08 304

Claims (2)

(57) [Claims] 1. A double-sided recess formed by undercut-molding an inner box of a heat insulating box, and a duct board made of expanded polystyrene having a substantially U-shaped cross section. Forming an inflatable portion at the distal end of the annular shape and press-fitting the inflatable portion into the two recessed portions for close contact and fixing so that cool air does not leak from the recesses without using a sealing material and the inner box and the duct plate Refrigerator characterized by forming a ventilation path with. 2. The heat insulation box body is provided with a heat insulation partition wall at the upper part of a refrigerating chamber,
A freezer compartment is defined in the lower part, and a cooler room in which a cooler of the refrigeration cycle and a blower for forced draft are arranged in one part of the freezer compartment, and cold air cooled by the cooler is put into the refrigerating compartment by the blower. A cool air discharge air passage for discharging, a cool air suction air passage for returning the cool air circulating in the refrigerating chamber to the cooler, an automatic ice making device provided in an upper portion of the freezing chamber, and a lower portion of the refrigerating chamber. A water supply tank and an ice making water supply pipe for supplying water from the water supply tank to the automatic ice making device are provided, and the cold air discharge air passage is provided in the vertical direction on either one of the left and right rear surfaces of the refrigerating chamber, and the like. The cold air intake air passage is provided on the side, and the ice making water supply pipe is arranged in the cold air intake air passage after exiting the water supply tank, inserted into the heat insulating partition wall, and guided to the automatic ice making device. Characterized by Built warehouse.