JP7148675B2 - refrigerator - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refrigerator having a cold air passage on the back side of a storage compartment.

A conventional refrigerator is disclosed in Patent Document 1. This refrigerator has a refrigerating compartment, a freezing compartment, and a vegetable compartment, which are adjacent to each other via an insulating wall. A cold air passage with a cooler and a blower is provided on the back of the freezer compartment. The cold air passage is provided with a discharge port facing the freezer compartment. The discharge ports are arranged on both sides of the back surface of the freezer compartment.

In the refrigerator configured as described above, when the blower is driven, cold air generated by the cooler flows through the cold air passage and is discharged into the freezer compartment from the discharge port. This cools the freezer compartment.

Japanese Patent Application Laid-Open No. 7-260315 (page 6, FIGS. 1 to 3)

According to the above-described conventional refrigerator, cold air is discharged forward from outlets arranged on both sides of the back surface of the freezer compartment, and more cold air flows along the side walls of the freezer compartment. As a result, cold heat is likely to be released to the outside of the refrigerator through the side wall, resulting in poor cooling efficiency of the refrigerator. Since the arrangement of the outlet may be restricted depending on the equipment in the refrigerator, a refrigerator that can discharge cool air in a direction away from the side wall with a simple configuration is desired. In addition, it is desired that cool air can be discharged not only in a direction away from the side wall but also in a desired direction with a simple structure from the discharge port whose arrangement is restricted.

SUMMARY OF THE INVENTION An object of the present invention is to provide a refrigerator capable of discharging cold air in a desired direction with a simple configuration.

In order to achieve the above object, the present invention comprises a storage chamber having an open surface on the front surface for cooling and preserving stored items, a cold air passage disposed on the back surface of the storage chamber, and a discharge port opening on the front surface. In the refrigerator in which the cold air passage is provided with a guide portion for guiding cold air forward, the guide portion has a bent portion bent from a first peripheral wall extending in the front-rear direction to form a peripheral edge of the discharge port, It is characterized in that the inner surface of the bent portion is inclined with respect to the front-rear direction.

Further, according to the present invention, in the refrigerator configured as described above, the inner surface of the bent portion is formed into a curved surface.

Further, according to the present invention, in the refrigerator configured as described above, a tangential direction of the front end of the inner surface of the bent portion is inclined with respect to the front-rear direction in a plane perpendicular to the first peripheral wall and parallel with the front-rear direction.

Further, according to the present invention, in the refrigerator configured as described above, an extended portion extending outward from the front end of the bent portion and arranged in front of the bent portion with a space therebetween is provided.

Further, according to the present invention, in the refrigerator configured as described above, the outlet is divided into a plurality of openings by grid-like ribs.

Further, according to the present invention, in the refrigerator configured as described above, a peripheral edge of the discharge port is close to a second peripheral wall facing the first peripheral wall.

Further, according to the present invention, in the refrigerator configured as described above, the outlet is formed in contact with a second peripheral wall facing the first peripheral wall.

Further, according to the present invention, in the refrigerator configured as described above, the outlet is opened so as to face the side of the second peripheral wall.

Further, according to the present invention, in the refrigerator configured as described above, a plurality of the guide portions are provided, one guide portion has a left side wall formed by the first peripheral wall, and the other guide portion has a right side wall formed by the first peripheral wall. It is characterized by being formed

Further, according to the present invention, in the refrigerator configured as described above, the first peripheral wall is arranged at a position closer to the side wall of the storage compartment than the second peripheral wall.

According to the refrigerator of the present invention, since the guide portion that guides the cold air forward has the bent portion that is bent from the first peripheral wall and has an inclined inner surface, the cold air that flows along the first peripheral wall flows along the inner surface of the bent portion. It is bent toward the outlet side. Therefore, cold air can be discharged in a desired direction from the discharge port with a simple configuration.

The front view which shows the refrigerator of 1st Embodiment of this invention. BRIEF DESCRIPTION OF THE DRAWINGS Right side sectional drawing which shows the refrigerator of 1st Embodiment of this invention The perspective view which shows the back panel of the refrigerator of 1st Embodiment of this invention. The front view which shows the back panel of the refrigerator of 1st Embodiment of this invention. AA sectional view of FIG. BRIEF DESCRIPTION OF THE DRAWINGS The perspective view which looked at the partition plate of the refrigerator of 1st Embodiment of this invention from the front. The perspective view which shows the guide part of the refrigerator of 1st Embodiment of this invention. FIG. 2 is a cross-sectional top view showing the guide portion of the refrigerator according to the first embodiment of the present invention; FIG. 2 is a cross-sectional view showing a state during molding of the back panel of the refrigerator according to the first embodiment of the present invention; The perspective view which shows the guide part of the refrigerator of 2nd Embodiment of this invention. FIG. 4 is a cross-sectional top view showing a guide portion of a refrigerator according to a second embodiment of the present invention; The perspective view which shows the guide part of the refrigerator of 3rd Embodiment of this invention. FIG. 5 is a cross-sectional top view showing a guide portion of a refrigerator according to a third embodiment of the present invention; The perspective view which shows the guide part of the refrigerator of 4th Embodiment of this invention. FIG. 5 is a cross-sectional top view showing a guide portion of a refrigerator according to a fourth embodiment of the present invention;

<First embodiment>
Embodiments of the present invention will be described below with reference to the drawings. FIG.1 and FIG.2 has shown the front view and right side sectional view of the refrigerator of 1st Embodiment. A refrigerator 1 is installed on an indoor floor FL, and has a heat insulating box body 7 filled with a foam heat insulating material 12 such as urethane foam between an outer box 10 and an inner box 11. - 特許庁The outer box 10 is made of coated steel plate or the like, and the inner box 11 is made of resin molding.

A panel-shaped vacuum heat insulating material 14 is attached to the inner surface of the back plate 10a of the outer box 10 with a hot-melt adhesive, a double-sided adhesive tape, or the like. Since the vacuum heat insulating material 14 has a lower thermal conductivity than the foam heat insulating material 12, the heat insulating performance of the heat insulating box 7 can be improved.

A refrigerator 1 has a plurality of storage compartments formed by an insulating box body 7, and a refrigerating compartment 2 is arranged in the upper part of the refrigerator 1. - 特許庁Below the refrigerating compartment 2, an ice making compartment 5 and a freezing compartment 4 are arranged side by side via a partition wall 11a filled with a heat insulating material. Below the freezer compartment 4 and the ice making compartment 5, the freezer compartment 3 is arranged via the partition part 50. As shown in FIG. A vegetable compartment 6 is arranged below the freezer compartment 3 via a partition wall 11b filled with a heat insulating material.

The refrigerator compartment 2 refrigerates stored items such as food. The front opening OF of the refrigerator compartment 2 is opened and closed by a rotating door 2a having a rotating shaft at its side end. A plurality of support portions (not shown) extending in the front-rear direction are vertically aligned and protrude from both side walls of the refrigerator compartment 2 . A shelf 60 made of transparent resin on which stored items are placed is detachably installed on each support.

The freezer compartment 3 , the freezer compartment 4 and the ice making compartment 5 communicate with each other behind the partition part 50 , and the volume of the freezer compartment 4 is smaller than that of the freezer compartment 3 . The ice-making compartment 5 stores ice made by an automatic ice-making device (not shown), and the freezing compartments 3 and 4 freeze and store stored items such as food.

The front opening OF of the ice making chamber 5 is opened and closed by a drawer-type door 5a that slides back and forth integrally with an ice storage case 5b (not shown). The front opening OF of the freezer compartment 3 is opened and closed by a drawer-type door 3a that slides back and forth integrally with the storage case 3b. A storage case 3c is placed on the storage case 3b. The front opening OF of the freezer compartment 4 is opened and closed by a drawer-type door 4a that slides back and forth integrally with the storage case 4b.

The temperature in the vegetable compartment 6 is set higher than the temperature in the refrigerating compartment 2 to refrigerate stored items such as vegetables. The front opening OF of the vegetable compartment 6 is opened and closed by a drawer-type door 6a that slides back and forth integrally with the storage case 6b.

A machine room 19 is provided behind the vegetable compartment 6 . The bottom and back of the machine room 19 are covered with a bottom plate 19a and a back cover 19b, respectively. A compressor 20 for operating a refrigerating cycle is arranged in the machine room 19 .

A back panel 35 is arranged on the back of the freezer compartments 3 and 4 and the ice making compartment 5, and a cold air passage 30 is provided between the back panel 35 and the inner box 11. - 特許庁A rear panel 45 is arranged on the rear surface of the refrigerator compartment 2 , and a cold air passage 40 communicating with the cold air passage 30 via the damper 16 is provided between the rear panel 45 and the inner box 11 .

The cold air passage 30 has a main passage 31 and guide portions 32 and 37. The main passage 31 is partitioned by a partition plate 36 into a front portion 31a and a rear portion 31b. 31 d of through-holes are provided in the partition plate 36, and the air blower 15 is distribute|arranged on 31d of through-holes. A cooler 21 that is connected to the compressor 20 and generates cold air is arranged in the rear portion 31b of the main passage 31 .

A plurality of guide portions 32 are provided on the upper portion of the rear panel 35 so as to protrude forward, and a discharge port 33 is opened on the front surface. The guide portion 37 is provided below the guide portion 32 so as to protrude forward, and the discharge port 34 opens on the front surface.

The cold air passage 40 has a plurality of outlets 41 opening on a rear panel 45 . The refrigerator compartment 2 and the vegetable compartment 6 are communicated with each other through a communication path 26 (see FIG. 6), and a return passage 70 is provided at the back of the vegetable compartment 6 to communicate with the cool air passage 30 through a return port 30c. be done.

3 and 4 are a perspective view and a front view showing the rear panel 35. FIG. FIG. 5 is a cross-sectional view taken along line AA of FIG. The back panel 35 is formed of a molded resin such as ABS resin. Guide portions 32 for opening discharge ports 33 are arranged in two stages at four locations on the upper portion of the back panel 35, and guide portions 37 are formed to extend left and right below the guide portions 32 at the lower stage. Below the guide portion 37, a return port 30b is formed extending left and right.

The upper guide portions 32 are arranged at the left and right ends of the upper end of the rear panel 35 . The lower guide portion 32 is arranged at the right end of the center portion in the vertical direction of the back panel 35 and at a position deviated to the left from the center portion in the vertical and horizontal directions. In the following description, the guide portions 32 in the upper two stages are respectively referred to as "upper right guide portion 32", "upper left guide portion 32", "lower right guide portion 32", and "lower left guide portion". 32”.

The upper right and upper left guide portions 32 face the freezer compartment 4 and the ice making compartment 5, respectively. The guide portions 32 on the lower right side and the lower left side face the freezer compartment 3 and are arranged at substantially the same height as the upper surface of the storage case 3c. The guide portion 37 faces the freezer compartment 3 and is arranged at substantially the same height as the upper surface of the storage case 3b.

The guide portion 32 and the guide portion 37 are formed in a cylindrical shape extending in the front-rear direction, and guide the cold air flowing vertically through the front portion 31a (see FIG. 2) of the main passage 31 forward. In this embodiment, the vertical cross sections of the guide portions 32 and 37 are formed in a substantially rectangular shape. The vertical cross sections of the guide portions 32 and 37 may be polygonal, circular, elliptical, or the like other than rectangular.

A discharge port 34 on the front surface of the guide portion 37 is divided into a plurality of (three in this embodiment) openings 34b by a plurality of vertically extending ribs 34a. The length of the discharge port 34 in the horizontal direction is longer than the length of the discharge port 33 of the guide portion 32 in the horizontal direction, and the opening area of the discharge port 34 is larger than the opening area of the discharge port 33 of each guide portion 32 . ing.

FIG. 6 shows a perspective view of the partition plate 36 as seen from the front. The partition plate 36 is made of a molded resin such as ABS resin. An opening 36a opens at the left end of the upper surface of the partition plate 36, and an opening 36b opens at the right end. An opening 36 c opens at the right end of the lower surface of the partition plate 36 .

A communicating path cover 26a is attached to the right end of the partition plate 36 to form a communicating path 26 connecting the openings 36b and 36c. The communicating path 26 communicates the refrigerator compartment 2 and the vegetable compartment 6 (see FIG. 2) through openings 36b and 36c. A rear panel 35 is attached to the left of the communication passage 26 of the partition plate 36 to form a front portion 31a (see FIG. 2) of the main passage 31 of the cold air passage 30. As shown in FIG. The cold air passages 30 and 40 (see FIG. 2) communicate through the opening 36a.

7 and 8 are a perspective view and a cross-sectional top view showing details of the guide portion 32 on the lower right side. Other guide portions 32 have the same configuration as the guide portion 32 on the lower right side. The guide portion 32 is formed in a cylindrical shape, and includes peripheral walls 32a and 32b extending in the front-rear direction and facing left and right, and peripheral walls 32c and 32d extending in the front-rear direction and facing up and down.

The peripheral wall 32 a (first peripheral wall) forms the right side wall of the guide portion 32 , and the peripheral wall 32 b (second peripheral wall) forms the left side wall of the guide portion 32 . The peripheral wall 32 c forms the upper wall of the guide portion 32 and the peripheral wall 32 d forms the bottom wall of the guide portion 32 .

The discharge port 33 opens on the front surface of the guide portion 32 and is divided into a plurality of openings 33c by grid-like ribs 33a and 33b. In this embodiment, the discharge port 33 is divided into four openings 33b by one vertically extending rib 33a and one horizontally extending rib 33b. A plurality of ribs 33a and 33b may be provided, or one or both of the ribs 33a and 33b may be omitted.

A bent portion 32 e is provided at the front end portion of the guide portion 32 . The bent portion 32e is linearly bent inward from the front end of one of the left and right peripheral walls 32a and is inclined with respect to the front-rear direction. The bent portion 32e may have an outer surface perpendicular to the front-rear direction, or at least an inner surface inclined with respect to the front-rear direction. The discharge port 33 is in contact with the front end of the bent portion 32 e and the front end of the peripheral wall 32 b , and the bent portion 32 e and the peripheral wall 32 b form the periphery of the discharge port 33 .

As shown in FIG. 3, the lower right guide portion 32 is formed in the same manner as the upper right guide portion 32, and the right side wall is formed by a peripheral wall 32a having a bent portion 32e. The upper-left and lower-left guide portions 32 are formed to have a left-right inverted shape of the upper-right guide portion 32, and the left side wall is formed by a peripheral wall 32a provided with a bent portion 32e. That is, the peripheral wall 32a (first peripheral wall) of each guide portion 32 is arranged at a position closer to the side wall of the freezer compartment 3 than the peripheral wall 32b (second peripheral wall).

In this embodiment, the peripheral walls 32a to 32d of the guide portion 32 and the side walls of the ribs 33a and 33b are formed parallel to the front-rear direction. Therefore, the peripheral walls 32a to 32d and the ribs 33a and 33b do not function as wind direction deflectors for bending the direction of cool air flowing through the guide portion 32 in the longitudinal direction, but the bent portion 32e functions as the wind direction deflector.

FIG. 9 is a sectional view showing the vicinity of the guide portion 32 when the rear panel 35 is molded. A mold 90 for the back panel 35 has a female mold 91 and a male mold 92 that moves vertically with respect to the female mold 91 in the figure. In the drawing, the male die 92 has a grid-like recessed portion 92a forming ribs 33a and 33b on its lower end face. In the drawing, R indicates the pulling direction of the male die 92 .

The female mold 91 and the male mold 92 are placed in contact with each other on the mating surface MF, and the gap between them is filled with resin. Peripheral walls 32 a to 32 d of guide portion 32 and side walls of ribs 33 a and 33 b (see FIG. 6) are formed parallel to the front-rear direction of refrigerator 1 . Therefore, the pull-out direction R of the male mold 92 coincides with the front-rear direction of the refrigerator 1, and the mating surface MF is formed on a plane perpendicular to the pull-out direction R. As shown in FIG.

For example, if the ribs 33a are inclined to function as a wind direction polarizing plate, the mating surface MF has a surface parallel to the drawing direction R, and the mold 90 becomes complicated. Further, when a plurality of inclined ribs 33a overlap in the front-rear direction, or when the inclined ribs 33a and the peripheral wall 32a overlap in the front-rear direction, the drawing direction is inclined and the die 90 becomes more complicated. Therefore, in this embodiment, the structure of the mold 90 can be simplified, and the guide portion 32 integrated with the back panel 35 can be easily molded.

In the refrigerator 1 configured as described above, when the compressor 20 and the blower 15 are driven, cool air generated by exchanging heat with the cooler 21 flows through the rear portion 31 b of the main passage 31 of the cold air passage 30 . Cold air flowing through the rear portion 31b of the main passage 31 flows into the front portion 31a of the main passage 31 through the through holes 31d. A part of the cool air flowing through the front portion 31 a of the main passage 31 flows forward through the guide portions 32 and 37 and is discharged to the freezer compartments 3 and 4 and the ice making compartment 5 through the discharge ports 33 and 34 . As a result, the freezer compartments 3 and 4 and the ice making compartment 5 are cooled, and cold air returns to the cooler 21 through the return port 30b.

When the damper 16 is opened, part of the cold air flowing through the front portion 31 a of the cold air passage 30 flows into the cold air passage 40 . The cold air flowing through the cold air passage 40 is discharged into the refrigerating compartment 2 from the outlet 41, thereby cooling the refrigerating compartment 2. As shown in FIG. The cool air that has flowed through the refrigerator compartment 2 flows into the vegetable compartment 6 via the communication path 26, and the vegetable compartment 6 is cooled. The cool air that has flowed through the vegetable compartment 6 returns to the cooler 21 through the return passage 70 .

The guide portion 32 formed in a cylindrical shape by the peripheral walls 32a to 32d rectifies the cold air flowing forward in the guide portion 32. As shown in FIG. As a result, the speed and density of the cold air flowing toward the discharge port 33 are reduced. Since the guide portion 32 is provided with the bent portion 32e, the cool air flow along the inner surface of the peripheral wall 32a is bent toward the discharge port 33 along the inner surface of the bent portion 32e, as indicated by the arrow S in FIG.

The cool air flow bent by the bent portion 32e separates from the peripheral wall 32a and joins with the cold air flowing forward, and the cold air is discharged from the discharge port 33 in the opposite direction of the bent portion 32e. That is, the cool air is discharged from the discharge port 33 in a direction away from the side wall of the freezer compartment 3 on the side closer to the peripheral wall 32 a of the guide portion 32 . As a result, cool air can be discharged in a desired direction from the discharge port 33 with a simple configuration, and the amount of cold air flowing along the side walls of the freezer compartment 3 can be reduced. Therefore, it is possible to reduce the cold heat released outside the refrigerator through the side wall of the freezer compartment 3 .

According to this embodiment, since the guide portion 32 that guides the cold air forward has the bent portion 32e that is bent from the peripheral wall 32a (first peripheral wall) and has an inclined inner surface, the cold air that flows along the peripheral wall 32a is bent at the bent portion 32e. is bent toward the outlet 33 along the inner surface of the . Therefore, cold air can be discharged in a desired direction from the discharge port 33 with a simple structure.

In addition, since the discharge port 33 is close to the peripheral wall 32b, the cold air flow along the peripheral wall 32b does not flow toward the opposing peripheral wall 32a, and the cold air flow discharged from the discharge port 33 can be easily directed in the direction opposite to the bent portion 32e. can be directed.

Moreover, the peripheral walls 32a to 32d of the guide portion 32 and the side walls of the ribs 33a and 33b are formed parallel to each other, and do not function as wind deflectors for bending the direction of cold air in a desired direction. Therefore, it is not necessary to incline the peripheral wall of the guide portion 32 and the ribs 33a and 33b with respect to the drawing direction of the mold 90 by a greater than a predetermined draft angle. Therefore, the drawing direction R of the male mold 92 can be aligned with the front-rear direction of the refrigerator 1 . Thereby, the structure of the mold 90 can be simplified, and the guide portion 32 integrated with the back panel 35 can be easily molded.

Further, the peripheral wall 32a of the upper right guide portion 32 forms a right side wall, and the peripheral wall 32b forms a left side wall. A peripheral wall 32a of the upper left guide portion 32 forms a left side wall, and a peripheral wall 32b forms a right side wall. That is, the peripheral walls 32a of the left and right guide portions 32 are arranged at positions closer to the side walls of the freezer compartment 3 than the peripheral walls 32b. Therefore, cold air is discharged from the discharge port 33 of the guide portion 32 in a direction away from the side wall of the freezer compartment 3 . As a result, the amount of cool air flowing along the side wall of the freezer compartment 3 can be reduced, and the cold heat emitted to the outside through the side wall can be reduced, thereby improving the cooling efficiency of the refrigerator 1 .

In addition, the peripheral wall 32a of the lower left guide portion 32 arranged to the right of the upper left guide portion 32 forms a left side wall. A peripheral wall 32a of the lower right guide portion 32 arranged to the left of the upper right guide portion 32 forms a right side wall. As a result, cold air is discharged from the outlets 33 of the lower left guide portion 32 and the lower right guide portion 32 toward the central portion of the freezer compartment 3 in the left-right direction. Therefore, the central portion in the left-right direction of the freezer compartment 3 can be cooled intensively.

Incidentally, the peripheral wall 32a of the lower right guide portion 32 may form the left side wall, and the peripheral wall 32a of the lower left guide portion 32 may form the right side wall. In this case, the left and right portions of the freezer compartment 3 can be cooled intensively.

When the cool air is discharged from the plurality of guides 32 in different directions as described above, if the peripheral walls or ribs 33a and 33b of the guides 32 are inclined, the die 90 requires a plurality of extraction directions, further complicating the process. Therefore, by changing the direction of cold air by the bent portion 32e, a plurality of guide portions 32 having various discharge directions of cold air can be formed integrally with the back panel 35 using a mold 90 having a simple structure. Therefore, the manufacturing cost of the refrigerator 1 can be reduced.

Further, the ejection port 33 is divided into a plurality of openings 33b by grid-like ribs 33a and 33b. As a result, the cool air flow straightened by the guide portion 32 is further straightened by the ribs 33a and 33b, and the cool air flow can be smoothly discharged from the discharge port 33. As shown in FIG.

<Second embodiment>
Next, FIG.10 and FIG.11 is the perspective view and upper surface sectional drawing which show the detail of the guide part 32 of the refrigerator 1 of 2nd Embodiment. For convenience of explanation, the same parts as those of the first embodiment shown in FIGS. 1 to 9 are given the same reference numerals. This embodiment differs from the first embodiment in the shape of the bent portion 32e. Other parts are the same as in the first embodiment.

A bent portion 32e that bends inward from the front end of the peripheral wall 32a of the upper right guide portion 32 is curved in the front-rear direction. Thereby, the inner surface of the bent portion 32e is formed by a curved surface. Since the inner surface of the bent portion 32e is a curved surface, it is possible to reduce the pressure loss when the cool airflow flowing along the peripheral wall 32a is bent by the bent portion 32e.

In addition, the tangential direction T of the front end of the inner surface of the bent portion 32e is inclined with respect to the front-rear direction in plan view. That is, the tangential direction T is inclined with respect to the front-rear direction in a plane orthogonal to the peripheral wall 32a and parallel to the front-rear direction. As a result, the cool airflow flowing in the front-rear direction away from the peripheral wall 32a and the cool airflow along the bent portion 32e smoothly merge, and the pressure loss can be further reduced.

According to this embodiment, the same effects as those of the first embodiment can be obtained. Moreover, since the inner surface of the bent portion 32e is formed into a curved surface, the pressure loss of the cold air flow can be reduced. In addition, since the tangential direction T of the front end of the inner surface of the bent portion 32e is inclined with respect to the front-rear direction, the pressure loss of the cold airflow can be further reduced.

<Third Embodiment>
Next, FIG.12 and FIG.13 is the perspective view and upper surface sectional drawing which show the detail of the guide part 32 of the refrigerator 1 of 3rd Embodiment. For convenience of explanation, the same parts as in the second embodiment shown in FIGS. 10 and 11 are given the same reference numerals. In this embodiment, an extension portion 32f is provided on the front surface of the guide portion 32. As shown in FIG. Other parts are the same as in the second embodiment.

The extending portion 32f extends outward from the front end of the bent portion 32e, and a space D is formed between the outer surface of the bent portion 32e and the extending portion 32f. The extending portion 32f is exposed on the rear surface of the ice making chamber 5 and the freezing chambers 3 and 4, and the bending portion 32e is covered with the extending portion 32f and is not exposed.

Since the extended portion 32f is separated from the curved portion 32e in contact with the cool air in the guide portion 32 via the space D, dew condensation or frost formation on the extended portion 32f due to moist air immediately after opening or closing the door 3a is prevented. . Therefore, it is possible to prevent deterioration of the appearance of the ice making compartment 5 and the freezer compartments 3 and 4, and prevent contact between the condensed water and the stored items. Further, even if condensation or frost occurs on the outer surface of the bent portion 32e, it is covered with the extended portion 32f, so that deterioration of the appearance can be prevented. Furthermore, since the thickness of the extending portion 32f that is continuous with the bent portion 32e can be reduced by the space D, it is possible to prevent sink marks on the front surface of the extending portion 32f.

According to this embodiment, the same effects as those of the second embodiment can be obtained. In addition, since the extending portion 32f extends outward from the front end of the bent portion 32e and is arranged in front of the bent portion 32e through the space D, the appearance of the ice making chamber 5 and the freezer chambers 3 and 4 is deteriorated and dew condensation occurs. Contact between water and storage can be prevented.

In addition, you may provide the extension part 32f similar to this embodiment in the guide part 32 of the refrigerator 1 of 1st Embodiment.

<Fourth Embodiment>
Next, FIG.14 and FIG.15 is the perspective view and upper surface sectional drawing which show the detail of the guide part 32 of the refrigerator 1 of 4th Embodiment. For convenience of explanation, the same reference numerals are assigned to the same parts as those of the third embodiment shown in FIGS. 12 and 13 described above. This embodiment differs from the third embodiment in the shape of the discharge port 33 of the guide portion 32 . Other parts are the same as in the third embodiment.

The discharge port 33 of the guide portion 32 is divided by vertically extending ribs 33a, and the horizontally extending ribs 33b (see FIG. 12) are omitted. The front end of the peripheral wall 32b facing the peripheral wall 32a is arranged behind the front end of the bent portion 32e of the guide portion 32 . As a result, the discharge port 33 of the guide portion 32 opens to face the side of the peripheral wall 32b (second peripheral wall). The front end of the peripheral wall 32b may be arranged at the same position in the front-rear direction as the front end of the bent portion 32e, and a through hole or notch may be provided in the front end of the peripheral wall 32b.

In the refrigerator 1 configured as described above, when the blower 15 is driven, the cold air flow discharged from the discharge port 33 is bent in the direction opposite to the bent portion 32e, as in the first embodiment. At this time, the discharge port 33 of the guide portion 32 is open facing the side of the peripheral wall 32b. As a result, the cool air that has flowed through the guide portion 32 can be easily discharged in the opposite direction of the bent portion 32e.

According to this embodiment, the same effects as those of the first embodiment can be obtained. In addition, since the discharge port 33 opens to face the side of the peripheral wall 32b, the cold air flowing through the guide portion 32 can be easily discharged in the opposite direction of the bent portion 32e. Incidentally, in the first and second embodiments as well, the discharge port 33 may be opened facing the side of the peripheral wall 32b.

In the first to fourth embodiments, the back panel 45 of the cold air passage 40 may be provided with the guide portion 32 similar to the back panel 35 . Also, the guide portions 32 of the respective embodiments may be appropriately combined and provided on the back panel 35 .

Also, the peripheral wall 32a formed with the bent portion 32e may be the upper wall or the lower wall of the guide portion 32. As shown in FIG. As a result, the cold air flow discharged from the discharge port 33 can be bent downward or upward.

Also, the guide portion 32 may protrude rearward from the rear panel 35 . However, if the guide portion 32 protrudes forward of the back panel 35 as in the first to fourth embodiments, the flow of cool air in the main passage 31 is not blocked by the guide portion 32, which is more desirable.

INDUSTRIAL APPLICABILITY According to the present invention, it can be used in a refrigerator having a cold air passage on the back side of the storage compartment.

Reference Signs List 1 refrigerator 2 refrigerating compartment 2a, 3a, 4a, 5a, 6a door 3, 4 freezing compartment 3b, 3c, 4b, 6b storage case 5 ice making compartment 5b ice storage case 6 vegetable compartment 7 heat insulating box body 10 outer box 11 inner box 11a, 11b partition wall 12 foam insulation material 14 vacuum insulation material 15 blower 16 damper 19 machine room 20 compressor 21 cooler 26 communication path 30, 40 cold air path 30b, 30c return port 31 main path 31a front part 31b rear part 32, 37 guide part 32a peripheral wall (first peripheral wall)
32b peripheral wall (second peripheral wall)
32c, 32d Peripheral wall 32c, 32d Peripheral wall 32e Bent portion 32f Extended portion 33, 34, 41 Discharge port 33a, 33b, 34a Rib 33b, 33c, 34b Opening 35 Rear panel 36 Partition plate 45 Rear panel 70 Return passage 90 Mold 91 female mold 92 male mold 92a recess D space MF mating surface OF opening surface

Claims (5)

Equipped with a storage chamber that has an open surface on the front surface to cool and store stored items, and a cold air passage arranged on the back surface of the storage chamber, the vertical cross section is rectangular, and a discharge port is opened on the front surface to provide the cold air . In a refrigerator in which a guide portion for guiding cold air flowing through the passage forward is provided in the cold air passage, the guide portion extends in the front-rear direction and has a first peripheral wall and a second peripheral wall facing each other in the long side direction of the rectangular shape. and a bent portion that bends from the first peripheral wall in the longitudinal direction to form a peripheral edge of the discharge port, the inner surface of the bent portion being inclined rearward away from the second peripheral wall. 2. A refrigerator according to claim 1, wherein a peripheral edge of said discharge port is formed at a front end of said second peripheral wall, and a front end of said second peripheral wall extends further forward than said first peripheral wall and faces said bent portion . 2. The refrigerator according to claim 1, wherein said outlet is provided with a rib that divides said outlet into a plurality of openings, and said rib is formed parallel to said front-rear direction. 3. The refrigerator according to claim 1, wherein an inner surface of said bent portion is curved. The refrigerator according to any one of claims 1 to 3, wherein the first peripheral wall is arranged closer to the side wall of the storage compartment than the second peripheral wall. A second guide portion is provided in the cold air passage at a position different in the vertical direction from the guide portion, and the second guide portion extends in the front-rear direction and faces the third and fourth peripheral walls in the vertical direction. and a second bent portion that bends from the third peripheral wall to form a peripheral edge of the second outlet, and the inner surface of the second bent portion is inclined rearward away from the fourth peripheral wall. 5. The refrigerator as claimed in claim 4, wherein the periphery of the second outlet is formed at the front end of the fourth peripheral wall.

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