JP6896529B2 - refrigerator - Google Patents

Description

The present invention relates to a refrigerator provided with a cold air passage on the back surface of the storage chamber.

A conventional refrigerator is disclosed in Patent Document 1. This refrigerator has an adjacent refrigerating room, freezing room and vegetable room via a heat insulating wall. A cold air passage with a cooler and a blower is provided on the back of the freezer. The cold air passage is provided with a discharge port facing the freezer. Discharge ports are located on both sides of the back of the freezer.

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

Japanese Unexamined Patent Publication No. 7-260315 (Page 6, Figures 1 to 3)

According to the conventional refrigerator, cold air is discharged forward from discharge ports arranged on both sides of the back surface of the freezer chamber, and more cold air circulates along the side wall of the freezer compartment. As a result, cold heat is easily released to the outside of the refrigerator through the side wall, and the cooling efficiency of the refrigerator is deteriorated. Since the arrangement of the discharge port may be restricted by the equipment in the refrigerator, a refrigerator capable of discharging cold air in a direction away from the side wall with a simple configuration is desired. Further, it is desired that cold air can be discharged not only in the direction away from the side wall but also in the desired direction with a simple configuration from the discharge port whose arrangement is restricted.

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 includes a storage chamber having an opening surface on the front surface for cooling and storing the stored material, and a cold air passage arranged on the back surface of the storage chamber, and the discharge port is opened on the front surface. In a refrigerator provided with a guide portion for guiding cold air forward in the cold air passage, the guide portion has a bent portion that bends 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, the present invention is characterized in that the inner surface of the bent portion is formed into a curved surface in the refrigerator having the above configuration.

Further, the present invention is characterized in that, in the refrigerator having the above configuration, the 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 orthogonal to the first peripheral wall and parallel to the front-rear direction.

Further, the present invention is characterized in that the refrigerator having the above configuration includes an extending portion extending outward from the front end of the bent portion and arranged in front of the bent portion through a space.

Further, the present invention is characterized in that, in the refrigerator having the above configuration, the discharge port is divided into a plurality of openings by grid-like ribs.

Further, the present invention is characterized in that, in the refrigerator having the above configuration, the peripheral edge of the discharge port is close to the second peripheral wall facing the first peripheral wall.

Further, the present invention is characterized in that, in the refrigerator having the above configuration, the discharge port is formed in contact with the second peripheral wall facing the first peripheral wall.

Further, the present invention is characterized in that, in the refrigerator having the above configuration, the discharge port opens toward the side of the second peripheral wall.

Further, according to the present invention, in the refrigerator having the above configuration, a plurality of the guide portions are provided, one of the guide portions 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, the present invention is characterized in that, in the refrigerator having the above configuration, the first peripheral wall is arranged at a position closer to the side wall of the storage chamber than the second peripheral wall.

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

Front view showing the refrigerator of the first embodiment of the present invention Right side sectional view showing the refrigerator of the first embodiment of the present invention. Perspective view showing the back panel of the refrigerator of 1st Embodiment of this invention. Front view showing the back panel of the refrigerator of the first embodiment of the present invention. AA cross-sectional view of FIG. A perspective view of the partition plate of the refrigerator according to the first embodiment of the present invention as viewed from the front. Perspective view which shows the guide part of the refrigerator of 1st Embodiment of this invention. Top sectional view showing the guide portion of the refrigerator according to the first embodiment of the present invention. Sectional drawing which shows the state at the time of molding of the back panel of the refrigerator of 1st Embodiment of this invention. A perspective view showing a guide portion of a refrigerator according to a second embodiment of the present invention. Top sectional view showing the guide portion of the refrigerator of the second embodiment of the present invention. A perspective view showing a guide portion of a refrigerator according to a third embodiment of the present invention. Top sectional view showing a guide portion of a refrigerator according to a third embodiment of the present invention. Perspective view which shows the guide part of the refrigerator of 4th Embodiment of this invention. Top sectional view showing a guide portion of a refrigerator according to a fourth embodiment of the present invention.

<First Embodiment>
An embodiment of the present invention will be described below with reference to the drawings. 1 and 2 show a front view and a cross-sectional view of the right side of the refrigerator of the first embodiment. The refrigerator 1 is installed on the floor FL of the room, and has a heat insulating box body 7 filled with a foam heat insulating material 12 such as urethane foam between the outer box 10 and the inner box 11. The outer box 10 is formed of a painted steel plate or the like, and the inner box 11 is formed of a resin molded product.

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, 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 plurality of storage chambers are formed in the refrigerator 1 by the heat insulating box body 7, and a refrigerating chamber 2 is arranged above the refrigerator 1. Below the refrigerating chamber 2, ice making chambers 5 and freezing chambers 4 arranged side by side are arranged via a partition wall 11a filled with a heat insulating material. A freezing room 3 is arranged below the freezing room 4 and the ice making room 5 via a partition 50. Below the freezing chamber 3, a vegetable compartment 6 is arranged via a partition wall 11b filled with a heat insulating material.

The refrigerating room 2 stores stored foods and the like in a refrigerator. The opening surface OF on the front surface of the refrigerating chamber 2 is opened and closed by a rotary door 2a having a rotating shaft at a side end. A plurality of support portions (not shown) extending in the front-rear direction are vertically arranged and projected on both side walls of the refrigerating chamber 2. A shelf 60 made of transparent resin on which storage is placed is detachably installed on each support portion.

The freezing chamber 3, the freezing chamber 4, and the ice making chamber 5 communicate with each other behind the partition portion 50, and the volume of the freezing chamber 4 is smaller than the volume of the freezing chamber 3. The ice making chamber 5 stores ice produced by an automatic ice making device (not shown), and the freezing chambers 3 and 4 freeze and store food and other stored items.

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

The temperature in the vegetable compartment 6 is set higher than the temperature in the refrigerating chamber 2, and the stored vegetables and the like are refrigerated and stored. The opening surface OF on the front surface of the vegetable compartment 6 is opened and closed by a drawer-type door 6a that slides back and forth together with the storage case 6b.

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

A back panel 35 is arranged on the back surface of the freezer chambers 3 and 4 and the ice making chamber 5, and a cold air passage 30 is provided between the back panel 35 and the inner box 11. A back panel 45 is arranged on the back surface of the refrigerating chamber 2, and a cold air passage 40 communicating with the cold air passage 30 via a damper 16 is provided between the back panel 45 and the inner box 11.

The cold air passage 30 has a main passage 31 and guide portions 32 and 37, and the main passage 31 is divided into a front portion 31a and a rear portion 31b by a partition plate 36. A through hole 31d is provided in the partition plate 36, and a blower 15 is arranged on the through hole 31d. A cooler 21 connected to the compressor 20 to generate 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 back panel 35 so as to project forward, and a discharge port 33 opens on the front surface. The guide portion 37 is provided so as to project forward below the guide portion 32, and the discharge port 34 opens in the front surface.

The cold air passage 40 has a plurality of discharge ports 41 opened on the back panel 45. Further, the refrigerating room 2 and the vegetable room 6 are communicated with each other through a communication passage 26 (see FIG. 6), and a return passage 70 is provided on the back surface of the vegetable room 6 to open a return port 30c and communicate with the cold air passage 30. Be done.

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

The upper guide portion 32 is arranged at the left and right ends of the upper end of the back panel 35. The lower guide portion 32 is arranged at the right end portion of the central portion of the back panel 35 in the vertical direction and at a position biased to the left from the central portion in the vertical and horizontal directions. Hereinafter, each of the upper two guides 32 is referred to as "upper right guide 32", "upper left guide 32", "lower right guide 32", and "lower left guide", respectively. It may be called "32".

The upper right and upper left guides 32 face the freezer 4 and the ice making chamber 5, respectively. The guide portions 32 on the lower right side and the lower left side face the freezing chamber 3 and are arranged at substantially the same height as the upper surface of the storage case 3c. The guide portion 37 faces the freezing chamber 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 tubular shape extending in the front-rear direction, and guide the cold air flowing in the vertical direction through the front portion 31a (see FIG. 2) of the main passage 31 forward. In the present 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 formed into a polygon, a circle, an ellipse, or the like other than a rectangle.

The discharge port 34 on the front surface of the guide portion 37 is divided into a plurality of (three in the present embodiment) openings 34b by a plurality of ribs 34a extending vertically. Further, the length of the discharge port 34 in the left-right direction is longer than the length of the discharge port 33 of the guide portion 32 in the left-right 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 viewed from the front. The partition plate 36 is formed of a resin molded product 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 36c opens at the right end of the lower surface of the partition plate 36.

A continuous passage cover 26a is attached to the right end of the partition plate 36, and a continuous passage 26 connecting the openings 36b and 36c is formed. The communication passage 26 communicates the refrigerating room 2 and the vegetable room 6 (see FIG. 2) through the openings 36b and 36c. A back panel 35 is attached to the left side of the connecting passage 26 of the partition plate 36, and a front portion 31a (see FIG. 2) of the main passage 31 of the cold air passage 30 is formed. Cold air passages 30 and 40 (see FIG. 2) communicate with each other through the opening 36a.

7 and 8 are a perspective view and a top sectional view showing details of the guide portion 32 on the lower right side. The 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 tubular 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 vertically.

The peripheral wall 32a (first peripheral wall) forms the right side wall of the guide portion 32, and the peripheral wall 32b (second peripheral wall) forms the left side wall of the guide portion 32. The peripheral wall 32c forms the upper wall of the guide portion 32, and the peripheral wall 32d 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 the grid-like ribs 33a and 33b. In the present embodiment, the discharge port 33 is divided into four openings 33b by one rib 33a extending vertically and one rib 33b extending left and right. A plurality of ribs 33a and 33b may be provided, and one or both of the ribs 33a and 33b may be omitted.

A bent portion 32e is provided at the front end portion of the guide portion 32. The bent portion 32e bends linearly inward from the front end of one of the left and right peripheral walls 32a, and inclines in the front-rear direction. The outer surface of the bent portion 32e may be formed perpendicular to the front-rear direction, and at least the inner surface may be inclined with respect to the front-rear direction. The discharge port 33 is in contact with the front end of the bent portion 32e and the front end of the peripheral wall 32b, and the bent portion 32e and the peripheral wall 32b form the peripheral edge 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 the peripheral wall 32a provided with the bent portion 32e. The guide portion 32 on the upper left side and the lower left side is formed in a shape in which the guide portion 32 on the upper right side is inverted left and right, and the left side wall is formed by the peripheral wall 32a provided with the 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 freezing chamber 3 than the peripheral wall 32b (second peripheral wall).

In the present 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 have the function of the wind direction deflecting plate that bends the wind direction of the cold air flowing in the guide portion 32 in the front-rear direction, and the bent portion 32e has the function of the wind direction deflecting plate.

FIG. 9 is a cross-sectional view showing the vicinity of the guide portion 32 at the time of molding the back panel 35. The mold 90 of the back panel 35 includes a female mold 91 and a male mold 92 that moves in the vertical direction with respect to the female mold 91 in the drawing. In the figure of the male type 92, a grid-like recess 92a forming the ribs 33a and 33b is formed on the lower end surface. In the figure, R indicates the pulling direction of the male mold 92.

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

For example, when the rib 33a is inclined and has the function of 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 the 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 mold 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 formed.

In the refrigerator 1 having the above configuration, when the compressor 20 and the blower 15 are driven, the cold air generated by heat exchange with the cooler 21 flows through the rear portion 31b of the main passage 31 of the cold air passage 30. The 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 hole 31d. A part of the cold air flowing through the front portion 31a of the main passage 31 circulates forward through the guide portions 32 and 37, and is discharged to the freezing chambers 3 and 4 and the ice making chamber 5 via the discharge ports 33 and 34. As a result, the freezer chambers 3 and 4 and the ice making chamber 5 are cooled, and the cold air returns to the cooler 21 through the return port 30b.

When the damper 16 is opened, a part of the cold air flowing through the front portion 31a 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 chamber 2 from the discharge port 41, and the refrigerating chamber 2 is cooled. The cold air flowing through the refrigerating room 2 flows into the vegetable room 6 through the connecting passage 26, and the vegetable room 6 is cooled. The cold air flowing through the vegetable compartment 6 returns to the cooler 21 via the return passage 70.

The guide portion 32 formed in a tubular shape by the peripheral walls 32a to 32d rectifies the cold air flowing forward in the guide portion 32. Therefore, the bias in the velocity and density of the cold air toward the discharge port 33 is reduced. Since the guide portion 32 is provided with the bent portion 32e, as shown by the arrow S in FIG. 8, the cold 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.

The cold airflow bent by the bent portion 32e merges with the cold air flowing forward away from the peripheral wall 32a, and the cold air is discharged from the discharge port 33 in the opposite direction of the bent portion 32e. That is, the cold air is discharged from the discharge port 33 in the direction away from the side wall of the freezing chamber 3 on the side close to the peripheral wall 32a of the guide portion 32. Thereby, the cold air is discharged from the discharge port 33 in a desired direction with a simple configuration, and the cold air flowing along the side wall of the freezing chamber 3 can be reduced. Therefore, it is possible to reduce the cold heat released to the outside of the refrigerator through the side wall of the freezer chamber 3.

According to the present embodiment, since the guide portion 32 that guides the cold air forward has a bent portion 32e that bends from the peripheral wall 32a (first peripheral wall) and inclines the inner surface, the cold air flowing along the peripheral wall 32a flows through the bent portion 32e. It is bent toward the discharge port 33 along the inner surface of the. Therefore, cold air can be discharged from the discharge port 33 in a desired direction with a simple configuration.

Further, since the discharge port 33 is close to the peripheral wall 32b, the cold airflow along the peripheral wall 32b does not go toward the facing peripheral wall 32a side, and the cold airflow discharged from the discharge port 33 can be easily sent in the opposite direction of the bent portion 32e. Can be turned.

Further, the peripheral walls 32a to 32d of the guide portion 32 and the side walls of the ribs 33a and 33b are formed in parallel, and do not have the function of a wind direction deflecting plate that bends 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 more than a predetermined draft with respect to the punching direction of the mold 90. Therefore, the pulling direction R of the male mold 92 can be matched with the front-rear direction of the refrigerator 1. As a result, the structure of the mold 90 can be simplified, and the guide portion 32 integrated with the back panel 35 can be easily formed.

Further, the peripheral wall 32a of the guide portion 32 on the upper right side forms the right side wall, and the peripheral wall 32b forms the left side wall. The peripheral wall 32a of the guide portion 32 on the upper left side forms the left side wall, and the peripheral wall 32b forms the right side wall. That is, the peripheral walls 32a of the left and right guide portions 32 are arranged closer to the side wall of the freezing chamber 3 than the peripheral walls 32b. Therefore, cold air is discharged from the discharge port 33 of the guide portion 32 in the direction away from the side wall of the freezing chamber 3. As a result, the amount of cold air flowing along the side wall of the freezer chamber 3 can be reduced, the amount of cold heat released to the outside of the refrigerator through the side wall can be reduced, and the cooling efficiency of the refrigerator 1 can be improved.

Further, 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 wall. The peripheral wall 32a of the lower right guide portion 32 arranged to the left of the upper right guide portion 32 forms the right wall. As a result, cold air is discharged from the discharge port 33 of the lower left guide portion 32 and the lower right guide portion 32 toward the central portion in the left-right direction of the freezing chamber 3. Therefore, the central portion of the freezer chamber 3 in the left-right direction can be centrally cooled.

The peripheral wall 32a of the guide portion 32 on the lower right side may form the left side wall, and the peripheral wall 32a of the guide portion 32 on the lower left side may form the right side wall. In this case, the left portion and the right portion of the freezer chamber 3 can be centrally cooled.

When the peripheral walls of the guide portions 32 or the ribs 33a and 33b are inclined when the cold air is discharged from the plurality of guide portions 32 in different directions as described above, the mold 90 requires a plurality of extraction directions and becomes more complicated. Therefore, if the direction of the cold air is changed by the bent portion 32e, a plurality of guide portions 32 having various discharge directions of the cold air can be integrally formed on the back panel 35 by the mold 90 having a simple structure. Therefore, the manufacturing cost of the refrigerator 1 can be reduced.

Further, the discharge port 33 is divided into a plurality of openings 33b by the grid-like ribs 33a and 33b. As a result, the cold airflow rectified by the guide unit 32 is further rectified by the ribs 33a and 33b, and the cold airflow can be smoothly discharged from the discharge port 33.

<Second Embodiment>
Next, FIGS. 10 and 11 are a perspective view and a top sectional view showing details of the guide portion 32 of the refrigerator 1 of the second embodiment. For convenience of explanation, the same parts as those in the first embodiment shown in FIGS. 1 to 9 are designated by the same reference numerals. In this embodiment, the shape of the bent portion 32e is different from that in the first embodiment. Other parts are the same as those in the first embodiment.

The bent portion 32e that bends inward from the front end of the peripheral wall 32a of the guide portion 32 on the upper right side is inclined in a curved shape with respect to the front-rear direction. As a result, 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, the pressure loss when the cold airflow flowing along the peripheral wall 32a is bent by the bent portion 32e can be reduced.

Further, in a plan view, 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. 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 cold airflow that flows in the front-rear direction away from the peripheral wall 32a and the cold airflow along the bent portion 32e smoothly merge, and the pressure loss can be further reduced.

According to this embodiment, the same effect as that of the first embodiment can be obtained. Further, since the inner surface of the bent portion 32e is formed into a curved surface, the pressure loss of the cold airflow can be reduced. Further, 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, FIGS. 12 and 13 are a perspective view and a top sectional view showing details of the guide portion 32 of the refrigerator 1 of the third embodiment. For convenience of explanation, the same parts as those in the second embodiment shown in FIGS. 10 and 11 are designated by the same reference numerals. In this embodiment, an extension portion 32f is provided on the front surface of the guide portion 32. Other parts are the same as those in the second embodiment.

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

Since the extension portion 32f is separated from the bending portion 32e in the guide portion 32 in contact with the cold air via the space D, dew condensation and frost formation on the extension portion 32f due to moist air immediately after opening and closing the door 3a are prevented. .. Therefore, it is possible to prevent the ice making chamber 5 and the freezing chambers 3 and 4 from deteriorating the aesthetic appearance, and it is possible to prevent the condensed water from coming into contact with the stored material. Further, even if dew condensation or frost formation occurs on the outer surface of the bent portion 32e, it is covered by the extending portion 32f, so that it is possible to prevent deterioration of the aesthetic appearance. Further, since the wall thickness of the extending portion 32f continuous with the bent portion 32e can be reduced by the space D, sink marks on the front surface of the extending portion 32f can be prevented.

According to this embodiment, the same effect as that of the second embodiment can be obtained. Further, since the extension portion 32f extending outward from the front end of the bending portion 32e and arranged in front of the bending portion 32e via the space D is provided, the appearance of the ice making chamber 5 and the freezing chambers 3 and 4 is deteriorated and dew condensation occurs. Contact between water and storage can be prevented.

The extension portion 32f similar to the present embodiment may be provided in the guide portion 32 of the refrigerator 1 of the first embodiment.

<Fourth Embodiment>
Next, FIGS. 14 and 15 are a perspective view and a top sectional view showing details of the guide portion 32 of the refrigerator 1 of the fourth embodiment. For convenience of explanation, the same parts as those in the third embodiment shown in FIGS. 12 and 13 are designated by the same reference numerals. In this embodiment, the shape of the discharge port 33 of the guide portion 32 is different from that in the third embodiment. Other parts are the same as those in the third embodiment.

The discharge port 33 of the guide portion 32 is divided by ribs 33a extending vertically, and ribs 33b extending left and right (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 toward 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 a notch may be provided at the front end of the peripheral wall 32b.

In the refrigerator 1 having the above configuration, when the blower 15 is driven, the cold air flow discharged from the discharge port 33 is bent in the opposite direction of 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 cold air flowing through the guide portion 32 can be easily discharged in the opposite direction of the bent portion 32e.

According to this embodiment, the same effect as that of the first embodiment can be obtained. Further, since the discharge port 33 opens toward 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. Similarly, in the first and second embodiments, 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 a guide portion 32 similar to the back panel 35. Further, the guide portions 32 of each embodiment may be provided on the back panel 35 in an appropriate combination.

Further, the peripheral wall 32a on which the bent portion 32e is formed may be the upper wall or the lower wall of the guide portion 32. As a result, the cold airflow discharged from the discharge port 33 can be bent downward or upward.

Further, the guide portion 32 may project to the rear of the back panel 35. However, it is more desirable that the guide portion 32 protrudes in front of the back panel 35 as in the first to fourth embodiments because the guide portion 32 does not obstruct the flow of cold air in the main passage 31.

According to the present invention, it can be used for a refrigerator provided with a cold air passage on the back surface of the storage chamber.

1 Refrigerator 2 Refrigerator room 2a, 3a, 4a, 5a, 6a Doors 3, 4 Freezer room 3b, 3c, 4b, 6b Storage case 5 Ice making room 5b Ice storage case 6 Vegetable room 7 Insulation box body 10 Outer box 11 Inner box 11a, 11b Partition wall 12 Foam heat insulating material 14 Vacuum heat insulating material 15 Blower 16 Damper 19 Machine room 20 Compressor 21 Cooler 26 Continuous passage 30, 40 Cold air passage 30b, 30c Return port 31 Main passage 31a Front 31b Rear 32, 37 Guide 32a peripheral wall (first peripheral wall)
32b peripheral wall (second peripheral wall)
32c, 32d Peripheral wall 32c, 32d Peripheral wall 32e Bending part 32f Extension part 33, 34, 41 Discharge port 33a, 33b, 34a Rib 33b, 33c, 34b Opening 35 Back panel 36 Partition plate 45 Back panel 70 Return passage 90 Mold 91 Female type 92 Male type 92a Recessed D Space MF Alignment surface OF Opening surface

Claims (6)

A storage chamber having an opening surface on the front surface for cooling and storing the stored material and a cold air passage arranged on the back surface of the storage chamber are provided, and a guide portion for guiding the cold air forward by opening a discharge port on the front surface is provided. in the refrigerator provided in the cold air passage, a first circumferential wall and a second wall, wherein the guide portion face each other and extend in the longitudinal direction, and a bent portion bent from the first circumferential wall forming the periphery of the discharge port A refrigerator having the refrigerator, wherein the inner surface of the bent portion is inclined toward the rear so as to be separated from the second peripheral wall , and the discharge port is opened toward the side of the second peripheral wall. A storage chamber having an opening surface on the front surface for cooling and storing the stored material and a cold air passage arranged on the back surface of the storage chamber are provided, and a guide portion for guiding the cold air forward by opening a discharge port on the front surface is provided. in the refrigerator provided in the cold air passage, a first circumferential wall and a second wall, wherein the guide portion face each other and extend in the longitudinal direction, and a bent portion bent from the first circumferential wall forming the periphery of the discharge port An extension having an inner surface of the bent portion that is formed so as to be inclined toward the rear so as to be separated from the second peripheral wall, extends from the peripheral edge of the discharge port, and is arranged in front of the bent portion through a space. Refrigerator, characterized in that it comprises a part. The refrigerator according to claim 1 or 2 , wherein the inner surface of the bent portion is formed into a curved surface. The refrigerator according to claim 3 , wherein the 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 orthogonal to the first peripheral wall and parallel to the front-rear direction. 1. The first aspect of the present invention comprises a plurality of the guide portions, wherein one guide portion forms a left side wall by the first peripheral wall, and the other guide portion forms a right side wall by the first peripheral wall. The refrigerator according to any one of claims 4. The refrigerator according to claim 5 , wherein the first peripheral wall is arranged closer to the side wall of the storage chamber than the second peripheral wall.

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