WO2017208738A1

WO2017208738A1 - Refrigerator

Info

Publication number: WO2017208738A1
Application number: PCT/JP2017/017444
Authority: WO
Inventors: 雅英中島; 浩二中西
Original assignee: パナソニックＩｐマネジメント株式会社
Priority date: 2016-05-31
Filing date: 2017-05-09
Publication date: 2017-12-07

Abstract

The present invention comprises: a heat-insulating refrigerator body (1); a refrigeration chamber (3) that is formed within the refrigerator body; and a cold air duct (19) that is installed vertically on the back surface of the refrigeration chamber and that supplies cold air from a cooling chamber (9) into the refrigeration chamber. The cold air duct (19) is configured such that the wall thickness of a duct cold air inlet portion (21) connected to the cooling chamber (9) is greater than the wall thickness of a duct lower portion (22). Due to this configuration, the temperature of the cold air inlet portion (21), which is contacted first by the low-temperature cold air from the cooling chamber (9) and thereby strongly cooled, can be maintained at a relatively high temperature, and the foregoing makes it possible to suppress condensation in the cold air inlet portion (21) even if used in a high-temperature high-humidity region and under conditions where a relatively large amount of outside air enters into the refrigeration chamber (3).

Description

refrigerator

The present invention relates to a refrigerator, and more particularly to a refrigerator cooling structure for a refrigerator.

Generally, a refrigerator has a freezer compartment and a refrigerator compartment. Among such refrigerators, there is a top freezer type refrigerator in which the upper part of the refrigerator body is a freezer compartment and the lower part is a refrigerator compartment. In such a refrigerator, a refrigerator is provided on the back of the freezer compartment, and the cold air generated by the cooler is supplied to the refrigerator compartment through a cold air duct provided on the back wall of the refrigerator compartment so as to cool food in the refrigerator compartment. (For example, refer to Patent Document 1).

FIG. 13 shows a refrigerator described in Patent Document 1, and this refrigerator 101 is provided with a freezer compartment 102 at the top and a refrigerator compartment 103 at the bottom. A cooling chamber 104 is provided at the back of the freezing chamber 102, and the cold air generated in the cooling chamber 104 is supplied into the refrigerating chamber 103 through a cold air duct 105 provided in the center of the back wall of the refrigerating chamber 103. It has come to be.

In general, a refrigerator has a refrigerator compartment, and the refrigerator compartment is provided with a plurality of storage shelves so that the refrigerator compartment space is divided into a plurality of upper and lower spaces, and a storage box is provided at the bottom so that the storage box can be pulled out. (For example, refer to Patent Document 1 and Patent Document 2).

FIG. 14 shows the refrigerator described in Patent Document 1, and this refrigerator 101 is a top freezer type refrigerator having a freezer compartment 102 at the top and a refrigerator compartment 103 at the bottom. In the refrigerator compartment 103 of the refrigerator, a plurality of storage shelves 106 are detachably provided to divide the space in the refrigerator compartment 103 into a plurality of upper and lower spaces, and a storage box 107 is detachably incorporated at the bottom of the storage shelf 107. It is a drawer-type storage space 108 that is covered with the storage shelf 106 a and partitioned from the space in the refrigerator compartment 103.

FIG. 15 shows a refrigerator described in Patent Document 2. This refrigerator 110 is a refrigerator having a vegetable room 113, an ice making room, and a switching room 114 together with a refrigerator room 111 and a freezer room 112. The refrigerating chamber 111 of the refrigerator 110 also has a plurality of storage shelves 115 detachably provided to partition the space in the refrigerating chamber 111 into a plurality of upper and lower spaces, and a storage box 116 is detachably incorporated at the lowermost portion thereof. The drawer storage space 117 is covered with the storage shelf 115a and partitioned from the space in the refrigerator compartment 111.

JP 2014-137185 A JP 2012-220116 A

However, when the conventional refrigerator shown in FIG. 13 is used in a hot and humid area, for example, Southeast Asian countries, condensation occurs in the cold air inlet portion 105a above the cold air duct 105 to which the low temperature cold air is supplied from the cooling chamber 104. There was a thing.

That is, the cold air inlet portion 105a of the cold air duct 105 is strongly cooled by the first contact with the low temperature cold air supplied from the cooling chamber 104, so that the surface temperature becomes considerably low, around 2 ° C to 3 °, and condensation occurs. Easy to use.

Therefore, in a high-temperature and high-humidity area, when the door of the refrigerator compartment 103 is often opened or closed, or when the opening time of the door of the refrigerator compartment 103 is long, the high-temperature and humid outside air entering the refrigerator compartment 103 becomes relatively large. In other words, this would cause dew condensation by touching the cold air inlet portion 105 a above the cold air duct 105.

And in the refrigerator of the type which has the freezer compartment 102 in the upper part, since the cold-air inlet part 105a of the cold-air duct 105 in which this dew condensation generate | occur | produces is a height position where a user's eyes are easy to see, the quality as a refrigerator is obtained. There was a problem of losing.

The present invention has been made in view of these points, and provides a refrigerator that suppresses the occurrence of condensation at the cold air inlet portion of the cold air duct and maintains high quality even when used in a hot and humid area.

In the present invention, the wall thickness of the cold air inlet portion of the cold air duct is made thicker than the wall thickness of the lower portion of the cold air duct.

As a result, the surface temperature can be kept relatively high even in the cold air inlet portion where the low temperature cold air from the cooling chamber is first touched and cooled strongly, and it is a high temperature and high humidity area and relatively high Even if it is used in such a way that the outside air enters the refrigerator compartment, the condensation at the cold air inlet can be suppressed.

As described above, the present invention can suppress the occurrence of dew condensation at the cold air inlet portion at the upper part of the cold air duct even when it is used in a hot and humid area and a relatively large amount of outside air enters into the refrigerator. be able to.

In the conventional refrigerators shown in FIGS. 14 and 15, the

refrigerator compartments

103 and 111 can change the height positions of the plurality of storage spaces by changing the height positions of the

storage shelves

106 and 115. It has the advantage that it can store foods of various sizes, large and small, and is easy to use.

However, the

retractable storage boxes

107 and 116 are fixedly provided at predetermined positions in the space in the refrigerating

chambers

103 and 111, usually at the lowermost part, and are drawn out by the

storage boxes

107 and 116. If the

storage spaces

108 and 117 are to be used, an operation such as bending down is required, which is difficult for a user who frequently uses the pull-out

storage spaces

108 and 117 in the

storage boxes

107 and 116. .

In particular, in the top freezer type refrigerator 101 in which the upper part of the refrigerator body is a freezer compartment and the lower part is a refrigerator compartment, the storage box 107 is located in a low place near the floor surface, so that it is noticeable to be difficult to use. Met.

The drawer-

type storage spaces

108 and 117 formed by the

storage boxes

107 and 116 are used in a predetermined application, for example, a vegetable storage room in the refrigerator of Patent Document 1 and a low-temperature storage room in the refrigerator of Patent Document 2. It is assumed to be used.

Therefore, the user cannot change and use the application as necessary, or the food cannot be properly cooled and stored even when the application is changed.

First, the present invention provides a refrigerator that can change the position of a drawer-type storage space formed by the storage box by changing the installation position of the storage box that can be pulled out, and can use the refrigeration room space in a new form.

The present invention is provided with a plurality of storage shelves detachably in the refrigerating room to partition the refrigerating room space into a plurality of upper and lower spaces, and the refrigerating room is provided with a plurality of rail portions that support the storage box so that it can be pulled out. In this configuration, the installation position of the storage box can be changed.

Thus, the refrigerating room can change the position of the retractable storage space in the refrigerating room space by changing the installation position of the storage box provided in the refrigerating room. Therefore, in addition to changing the height position of a plurality of spaces formed between the storage shelves, the position of the drawer-type storage space formed by the storage box can also be used by changing it to a position near the waist height, for example. It can be used according to the user's preference and greatly improves usability.

The present invention can change the height position of a plurality of spaces formed between the storage shelves, and can also change the position of the drawer-type storage space formed by the storage box, so that the refrigerator can be easily used.

FIG. 1 is a front view of the refrigerator in the first embodiment of the present invention. FIG. 2 is a front view showing the inside of the refrigerator according to the first embodiment of the present invention. FIG. 3 is a longitudinal sectional view of the refrigerator in the first embodiment of the present invention. FIG. 4 is an explanatory diagram showing a cold air flow of the refrigerator in the first embodiment of the present invention. FIG. 5 is an enlarged cross-sectional view showing a cold air inlet portion of the cold air duct in the refrigerator according to the first embodiment of the present invention. FIG. 6 is an exploded perspective view showing a cold air inlet portion of the cold air duct in the refrigerator according to the first embodiment of the present invention. FIG. 7 is a cross-sectional view illustrating a lighting device installation portion of the refrigerator in the first embodiment of the present invention. FIG. 8A is a perspective view showing a support member and a rail portion in the middle part of the refrigerator compartment of the refrigerator according to the first embodiment of the present invention. FIG. 8B is a perspective view showing a support member and a rail portion in the lowest part of the refrigerator compartment of the refrigerator in the first embodiment of the present invention. FIG. 9 is a perspective view showing one example of use of the refrigerator in the first embodiment of the present invention. FIG. 10 is a longitudinal sectional view showing one example of use of the refrigerator in the first embodiment of the present invention. FIG. 11 is a perspective view showing another example of use of the refrigerator in the first embodiment of the present invention. FIG. 12 is a longitudinal sectional view showing one example of another use of the refrigerator in the first embodiment of the present invention. FIG. 13 is a longitudinal sectional view of a conventional refrigerator. FIG. 14 is a longitudinal sectional view of a conventional refrigerator. FIG. 15 is a longitudinal sectional view of another conventional refrigerator.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

(First embodiment)
FIG. 1 is a front view of a refrigerator in the first embodiment of the present invention, FIG. 2 is a front view showing the inside of the refrigerator in the first embodiment of the present invention, and FIG. 3 is a first embodiment of the present invention. FIG. 4 is an explanatory view showing a cold air flow of the refrigerator in the first embodiment of the present invention. FIG. 5 is an enlarged sectional view showing a cold air inlet portion of the cold air duct in the refrigerator in the first embodiment of the present invention, and FIG. 6 shows a cold air inlet portion of the cold air duct in the refrigerator in the first embodiment of the present invention. FIG. 7 is an exploded perspective view, and FIG. 7 is a cross-sectional view showing a lighting device installation portion of the refrigerator in the first embodiment of the present invention. FIG. 8A is a perspective view showing a support member and a rail part in the middle part of the refrigerator compartment of the refrigerator according to the first embodiment of the present invention, and FIG. 8B is the bottom part of the refrigerator compartment of the refrigerator according to the first embodiment of the present invention. It is a perspective view which shows a supporting member and a rail part. FIG. 9 is a perspective view showing one example of use of the refrigerator in the first embodiment of the present invention, and FIG. 10 is a longitudinal sectional view showing one example of use of the refrigerator in the first embodiment of the present invention. FIG. 11 is a perspective view showing another example of use of the refrigerator in the first embodiment of the present invention. FIG. 12 is a longitudinal section showing another example of use of the refrigerator in the first embodiment of the invention. FIG.

1 to 12, this refrigerator is a top freezer type refrigerator having a freezer compartment 2 in the upper part of the refrigerator body 1 and a refrigerator compartment 3 in the lower part thereof.

As shown in FIG. 3, the refrigerator main body 1 includes a metal outer box 4 that opens forward, an inner box 5 made of hard resin, and a hard-filled foam filled between the outer box 4 and the inner box 5. It consists of urethane foam 6. And the front surface of the freezer compartment 2 and the refrigerator compartment 3 of the refrigerator main body 1 can be opened and closed by

rotatable doors

7 and 8 having heat insulation properties by the same configuration as the refrigerator main body 1.

Further, a cooling chamber 9 is provided on the rear surface of the freezer compartment 2 of the refrigerator main body 1, and a cooler 10 that generates cold air and a blower fan 11 that supplies the cold air to the freezer compartment 2 and the refrigerator compartment 3 are provided. Further, a machine room 12 protruding into the refrigerator compartment 3 is provided on the lower rear surface of the refrigerator body 1 and a compressor 13 is installed. A condenser (not shown), a heat radiating pipe (not shown), a capillary A refrigeration cycle is configured by sequentially connecting a tube (not shown) and the cooler 10 in an annular manner, and a cooling operation is performed by enclosing a refrigerant in the refrigeration cycle.

The refrigerating chamber 3 is provided with a plurality of storage shelves 14 made of a transparent material in a detachable manner, and the storage shelves 14 divide the refrigerating room space into a plurality of upper and lower spaces. The uppermost refrigerating room space of the refrigerating room 3 is provided with a cover plate 15 made of a transparent material, which can be turned upward, to be a low-temperature storage room 16, and the lowermost machine room front space is located at the lower part on both sides. A rail portion 17 is provided so that the storage box 18 can be pulled out freely to form a drawer-type storage space 18a.

Furthermore, a cold air duct 19 for supplying the cold air generated by the cooler 10 to the cold room 3 is provided on the back surface of the cold room 3. As shown in FIGS. 3 and 4, this cold air duct 19 is provided in the vertical direction at the substantially central portion of the back surface of the refrigerator compartment 3, a duct cold air inlet portion 21 connected to the cold air passage portion 20 from the cooling chamber 9 and a duct connected thereto. It consists of a lower part 22. Further, the cold air duct 19 is provided with a cold air outlet 23 that opens into each space partitioned by the storage shelf 14 on each of the front and left and right side surfaces.

Note that the cool air passage portion 20 from the cooling chamber 9 is led out from the central portion of the cooling chamber 9, and the cool air efficiently cooled in the central portion of the cooler is supplied to the cool air duct 19.

Further, as shown by the broken line in FIG. 4, a cold air return port 24 is provided in the upper back portion of the refrigerator compartment 3. The cold air return port 24 opens into the low temperature storage chamber 16 (see FIG. 3) and communicates with the cold room space below the low temperature storage chamber 16 via the cold air return duct 25, so that the cold air in the cold room 3 is cooled. The left and right side portions of 9, that is, the side portions of the cooler 10 are returned.

Here, as shown in FIG. 5, the cold air duct 19 has a damper 26 for controlling the supply of cold air incorporated in the duct cold air inlet portion 21, and the wall thickness of the duct cold air inlet portion 21 on the cold room interior side is the duct lower portion 22. It is formed thicker than the side wall thickness of the refrigerator compartment. In this embodiment, the wall thickness of the duct lower portion 22 is 10 mm to 20 mm, and the wall thickness of the lowermost end portion of the duct cold air inlet portion 21 is 40 mm to 50 mm.

Further, the wall on the inner surface side of the refrigerating chamber 3 of the duct cold air inlet portion 21 is inclined so that the wall surface protrudes forward so that the wall thickness further increases as it goes upward. The wall thickness of the cold air duct 19 is made thicker as it is closer to the cold air passage section 20 from.

Further, as shown in FIG. 6, the duct cool air inlet portion 21 and the duct lower portion 22 of the cold air duct 19 are combined as separate parts to constitute the cold air duct 19. Each of the duct cold air inlet portion 21 and the duct lower portion 22 is composed of a duct main body portion 19a formed of a heat insulating material such as polystyrene foam, and a duct cover 19b covering the inner surface side of the refrigerator compartment 3 of the duct main body portion 19a.

Further, the cold air duct 19 is not provided with cold air outlets on both sides of the duct cold air inlet portion 21 facing the uppermost low temperature storage chamber 16 among the cold air outlets 23 provided on both side surfaces thereof, and is a closed surface, as shown in FIG. As shown, it is provided only in the front portion (hereinafter, the cold air outlet provided in the front portion will be referred to as a cold air outlet 23a for a low temperature storage room). Further, a wind shielding plate 27 protruding toward the front (the refrigerator compartment 3 side) is provided at a lower portion of the cold air outlet 23a for the low temperature storage compartment as shown in FIG.

As shown in FIG. 6, a seal material 28 is provided in the damper mounting portion of the damper 26, and a deodorizing filter 29 is provided in the cold air return duct 25.

On the other hand, the refrigerator compartment 3 is opened and closed by a door 8, and a plurality of door pockets 30 are provided on the inner surface of the door 8 as shown in FIG. In the door pocket 30, the front end portion of the storage box 18 is positioned close to the inner surface of the door 8 without providing a door pocket in a portion facing the front space of the lowermost machine room 12.

That is, the front space of the machine room 12 is narrow because the machine room 12 in which the compressor 13 is installed protrudes to the inside of the refrigerating room 3, and if a door pocket is provided in this part, the front and rear length dimensions of the storage box 18 are small. Therefore, a large front and rear length dimension of the storage box 18 is ensured without providing a door pocket in this portion.

And the storage shelf 14a located above the upper surface opening of the storage box 18 is close to the upper surface opening edge of the storage box 18 so that the upper surface opening of the storage box 18 is substantially closed.

Further, as shown in FIG. 3, the refrigerator compartment 3 of the refrigerator includes a support member 31 a at the top of the

support members

31, 31 a, 31 b that holds the plurality of storage shelves 14, and a machine at the bottom of the refrigerator compartment. An auxiliary rail portion 17a similar to the rail portion 17 provided in the room front space is provided. That is, this refrigerator has a configuration in which a rail portion 17 and an auxiliary rail portion 17a that support the storage box 18 in a refrigerating chamber 3 so as to be freely pulled out are provided at a plurality of positions in the lowermost portion and the upper portion of the refrigerating chamber space.

The storage box 18 provided at the lowermost part of the refrigerator compartment space can be removed from the rail part 17 at the lowermost part of the refrigerator compartment space and slidably supported by the auxiliary rail part 17a. Thereby, the position in the refrigerator compartment 3 of the drawer-type storage space 18a can be changed.

In this embodiment, the auxiliary rail portion 17a is provided on the support member 31a that supports the second-stage storage shelf 14 that is approximately the height of the waist of the user in the standing posture, and the position of the drawer-type storage space 18a. Can be changed to approximately the height of the user's waist.

Further, the storage shelf 14b facing the upper surface opening of the storage box 18 supported by the auxiliary rail portion 17a is stored in the storage shelf 14b in the same manner as when the storage box 18 is provided in the front space of the machine room at the bottom of the refrigerator compartment. The height position of the support member 31b is set so as to close to and close to the upper opening edge of the box 18.

In the present embodiment, when the storage box 18 is not supported by the auxiliary rail portion 17a, the storage shelf 14 is placed on the support member 31a provided with the auxiliary rail portion 17a, or more than the storage box 18 as shown in FIG. The option storage box 18b having a shallow depth is supported by the auxiliary rail portion 17a.

Moreover, in the refrigerator of this Embodiment, since the control device 32 which controls a refrigerator is integrated in the back wall part of the refrigerator compartment 3 of the part which makes the auxiliary rail part 17a support the storage box 18 (refer FIG. 3), The rear wall protrudes slightly into the refrigerating chamber 3, but this protruding dimension is sufficiently smaller than the protruding dimension of the machine room 12, so that the front of the storage box 18 is placed against the door pocket 30 a on the inner surface of the door 8. There is no contact.

Further, as shown in FIG. 7, an illuminating device 33 made of an LED or the like that irradiates the inside of the refrigerator compartment 3 is provided in the front portion of the ceiling surface of the refrigerator compartment 3, and the transparent storage chamber 16 is more transparent than the front portion of the refrigerator compartment 3. The inner cover plate 15 and the respective storage shelves 14 are transmitted to irradiate the inside.

The lighting device 33 is provided so as to be positioned in front of the front edge of the cover plate 15 when the cover plate 15 of the low-temperature storage chamber 16 is opened, thereby improving the irradiation property when the cover plate 15 is opened.

About the refrigerator comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

Refrigerator generates cold air in the cooling chamber 9 at the back of the freezer compartment 2. This cold air flows from the duct cold air inlet portion 21 to the cold air duct 19 through the cold air passage portion 20, and is stored at a low temperature from the front and the

cold air outlets

23 and 23a on both sides of the cold air duct 19 as indicated by solid arrows in FIG. It is supplied into the refrigerator compartment 3 including the chamber 16.

The cold air supplied into the refrigerator compartment 3 cools the food in each space of the cold storage compartment 16 and the refrigerator compartment 3, and as indicated by the broken line arrows in FIG. Then, the circulation after being cooled by the cooler 10 and flowing to the refrigerating chamber 3 again is repeated.

Here, since the duct cold air inlet portion 21 of the cold air duct 19 is connected to and close to the cold air passage portion 20, the low temperature cold air from the cold air passage portion 20 is first touched and strongly cooled, so that condensation is likely to occur. Become. However, since the wall thickness of the duct cold air inlet portion 21 is thicker than the wall thickness of the duct lower portion 22, the temperature drop due to the low temperature cold air from the cooling chamber 9 is suppressed and the surface temperature, that is, the refrigerator chamber 3 is reduced. The facing temperature can be kept relatively high. Therefore, even if the area used is a hot and humid area and a relatively large amount of outside air enters the refrigerator compartment 3, the condensation at the duct cold air inlet portion 21 can be suppressed. it can.

In particular, the duct cold air inlet portion 21 has a portion located above the damper 26 that is always in communication with the cooling chamber 9 and is always cooled strongly by low-temperature cold air and tends to cause dew condensation. Since the wall thickness of the upper part is thicker than the lower part of the damper 26, the temperature of the entire duct cold air inlet part 21 can be maintained relatively high, and the occurrence of condensation can be reliably suppressed.

That is, even if the duct cold air inlet portion 21 located above the damper 26 is always strongly cooled by the low temperature cold air, the wall thickness of the upper portion is made thicker than the damper 26 that is always strongly cooled. Cooling by low-temperature cold air can be eased and the propagation of cold heat to the entire duct cold air inlet portion 21 can be suppressed, and the temperature of the entire duct cold air inlet portion 21 can be maintained relatively high. Therefore, even in a high-temperature and high-humidity area and a relatively large amount of outside air enters the refrigerator compartment 3, the condensation at the duct cool air inlet portion 21 can be reliably suppressed.

Further, since the cold air duct 19 has a thick wall thickness of only the duct cold air inlet portion 21, only the duct cold air inlet portion 21 has a large allowance to protrude into the refrigerating chamber 3, and the duct lower portion 22 below that is the conventional one. Can be as small as. Therefore, the decrease in the internal volume of the refrigerator compartment 3 caused by increasing the wall thickness can be minimized, and the volume reduction of the refrigerator compartment 3 can be minimized while preventing condensation on the surface of the cold air duct 19 while minimizing the volume decrease. Volume can be secured.

Particularly in this embodiment, the wall surface of the duct cold air inlet portion 21 on the side of the refrigerator compartment 3 is inclined so that the wall thickness increases toward the upper side, that is, toward the cooling chamber 9 side. With this configuration, it is possible to reduce the ratio of reducing the volume of the refrigerating chamber as compared with the case where the wall thickness of the entire duct cold air inlet portion 21 is increased. The volume of the refrigerator compartment 3 can be effectively secured while effectively reducing the decrease.

In addition, since the upper space where the duct cold air inlet portion 21 of the refrigerating room 3 is located is covered with the cover plate 15 as the low temperature storage room 16, even if the door 8 of the refrigerating room 3 is opened, the outside air remains unless the cover plate 15 is opened. The duct cold air inlet portion 21 is not touched. Therefore, even if the door 8 is opened and closed and the outside air enters the refrigerating chamber 3, the opportunity for the outside air to touch the duct cold air inlet portion 21 can be greatly reduced. As a result, even when the door 8 is opened and closed frequently or the door is opened for a long time, the outside air enters the refrigerator cold air inlet 21 even if the hot and humid outside air entering the refrigerator compartment 3 increases. It is possible to prevent the occurrence of condensation by suppressing direct contact and to realize effective prevention of condensation.

Further, when the cold air flowing through the duct cold air inlet portion 21 flows through the duct cold air inlet portion 21, the temperature becomes higher as it goes downward by exchanging heat with the duct cold air inlet portion 21. The temperature of the duct lower portion 22 can also be maintained at a relatively high temperature, and dew condensation can be suppressed over the entire cold air duct 19.

Particularly in the present embodiment, the cold air duct 19 is formed by combining and connecting the duct cold air inlet portion 21 and the duct lower portion 22 as separate parts, so that the cold heat propagation is blocked at this connecting portion. Therefore, the propagation of cold heat from the duct cold air inlet portion 21 that is strongly cooled by the low temperature cold air to the duct lower portion 22 can be greatly reduced, and the temperature drop due to the cold heat propagation of the duct lower portion 22 can be prevented, thereby preventing the condensation of the entire cold air duct 19. It can be made more reliable.

Further, in the present embodiment, since the wind shielding plate 27 is provided in the lower portion of the cold air outlet 23a for the low temperature storage chamber formed in the cold air duct 19, the low temperature cold air blown out from the cold air outlet 23a for the low temperature storage chamber is It is possible to prevent the cold air duct 19 from cooling down the surface of the cold air duct 19 by flowing down immediately below the cold air outlet 23a for the low temperature storage room. Accordingly, it is possible to prevent the cold air duct 19 from being strongly cooled by this low-temperature cold air, causing the temperature to drop and causing dew condensation in that portion.

As described above, the refrigerator shown in the present embodiment can prevent the occurrence of condensation over the entire cold air duct 19 as well as the duct cold air inlet portion 21, and can be a higher quality refrigerator.

Further, since the cool air duct 19 has the duct cool air inlet portion 21 and the duct lower portion 22 as separate parts as described above, the duct cool air inlet portion 21 is shared and the duct lower portions 22 having different lengths are combined. It is possible to provide an inexpensive refrigerator that can accommodate refrigerators of different capacities.

As described above, this refrigerator can suppress the occurrence of dew condensation at the cold air inlet part above the cold air duct, and can be a high quality refrigerator, but also has the following effects, so please explain deep.

That is, since the refrigerator compartment 3 of this refrigerator partitions the refrigerator compartment space into a plurality of upper and lower spaces by a plurality of storage shelves 14, the height dimension of each space is changed by changing the height position of the storage shelves 14. Can store foods of different heights.

Furthermore, in this refrigerator, the auxiliary rail of the support member 31a provided in the upper part of the refrigerating room space, the storage box 18 incorporated in one of the plurality of spaces partitioned by the storage shelf 14, in this example, the lowermost space. It can be moved and incorporated into the part 17a. That is, the position of the pull-out storage space 18a can be changed, and the usability of the user who frequently uses the pull-out storage space 18a can be greatly improved.

For example, in this embodiment, the refrigerating chamber 3 is provided with the rail portion 17 at the lowermost part of the refrigerating chamber, and the auxiliary rail portion 17a is provided on the support member 31a at the upper portion of the refrigerating chamber. It can be changed above and below the indoor space.

Therefore, in this example, the drawer type storage space 18a provided at the lowermost part of the refrigerator compartment 3 is changed to the vicinity of the waist position of the user so that the food in the drawer type storage space 18a can be taken out without bending the waist. can do. Therefore, even if the food stored in the drawer-type storage space 18a formed by the storage box 18 is a heavy food such as canned beer, it becomes easy to put in and out, and is convenient for users who frequently use the drawer-type storage space 18a. Is greatly improved.

Thus, in this refrigerator, the position of the drawer-type storage space 18a can be changed in the same manner as the height dimension change of each space partitioned by the respective storage shelves 14, and can be used according to the user's preference. Greatly improved.

In this embodiment, the portion where the storage box 18 is installed is the lowermost part of the refrigerating chamber 3 and the rear surface thereof protrudes greatly forward by the machine room 12. The storage box 18 provided in the above tends to be a small one with a short front and rear length. However, in the present embodiment, the inner surface of the door 8 facing the lowermost space portion of the refrigerator compartment 3 in which the storage box 18 is installed is not provided with the door pocket 30, so that the front and rear of the storage box 18 installed in this portion A large length can be secured, and the internal volume of the drawer-type storage space 18a can be increased.

That is, even if the portion where the storage box 18 is installed protrudes greatly toward the refrigerating chamber 3 such as the machine room 12 provided for installing the compressor 13, there is no door pocket on the inner surface of the door, so that much. The front and rear length of the storage box 18 can be increased, and the volume of the pull-out storage space 18a can be increased.

This makes it possible to store more food in the drawer-type storage space 18a formed by the storage box 18, improving usability.

On the other hand, there is a door pocket 30a in the inner surface portion of the door 8 on the side where the installation position of the storage box 18 is changed, in this example, the inner surface portion of the door 8 facing the space on the side where the auxiliary rail portion 17a is provided. However, even if the door pocket 30a is present, the back of the space of the refrigerator compartment 3 where the door pocket 30a exists does not protrude as much as a plane or the machine room 12, so that the protrusion of the door pocket 30a is caused by the machine room 12. It replaces the protruding allowance. Therefore, the storage box 18 can be repositioned without any problem, that is, without being replaced with another storage box having a different size, and the storage box 18 can be shared while securing a storage capacity, thereby improving usability. .

The refrigerator refrigerating room 3 shown in this embodiment can be used by changing the installation position of the drawer-type storage space 18a in the storage box 18 to change the usage of the drawer-type storage space 18a. Is further improved.

More specifically, the refrigerating chamber 3 has one of the space portions in which the storage box 18 can be installed, in this example, the cold air duct 19 is located in the space above the auxiliary rail portion 17a and the cold air outlet 23 is provided. It is. Therefore, if the storage box 18 is installed in the space above the auxiliary rail portion 17a, the drawer-type storage space 18a in the storage box 18 is filled with the cold air blown out from the cold air outlet 23, and the temperature is slightly lower than that of the refrigerated indoor space. Become.

On the other hand, the drawer-type storage space 18a in the storage box 18 installed at the lowermost part of the refrigerating room has a machine room 12 on the back side and no cold air outlet, so that it has substantially the same temperature as the refrigerating room space, and the auxiliary rail portion 17a. The temperature is slightly higher than when the storage box 18 is installed in the upper space.

Therefore, the drawer-type storage space 18a of the storage box 18 can be properly used as a storage space with different cooling temperatures, the usage of the drawer-type storage space 18a can be expanded, and various foods can be stored in a refrigerator to further improve usability. To do.

Since the

storage shelves

14a and 14b located at the upper part of the storage box 18 are provided in a position close to and covering the upper opening of the storage box 18, the drawer-type storage space 18a in the storage box 18 is provided. It is possible to make a low-temperature room or a storage space having a relatively high temperature more effectively, and various foods can be stored in a cooled state in a more optimal state.

As described above, this refrigerator can change the position of the drawer-type storage space 18a and improves usability. However, the following effects will also be described.

That is, in this refrigerator, the cold air duct 19 for supplying cold air to the refrigerating chamber 3 is connected to the cold air passage portion 20, and the duct cold air inlet portion 21 adjacent thereto is strongly touched by the low-temperature cold air from the cold air passage portion 20 first. Cooling is likely to cause condensation.

However, since the wall thickness of the duct cold air inlet portion 21 is thicker than the wall thickness of the duct lower portion 22, the temperature drop due to the low temperature cold air from the cooling chamber 9 is suppressed and the surface temperature is kept relatively high. be able to. Therefore, even if the area used is a hot and humid area and a relatively large amount of outside air enters the refrigerator compartment 3, the condensation at the duct cold air inlet portion 21 can be suppressed. it can.

In particular, the duct cold air inlet portion 21 has a portion located above the damper 26 that is always in communication with the cooling chamber 9 and is always cooled strongly by low-temperature cold air and tends to cause dew condensation. Since the wall thickness of the upper portion is made thicker than that, the temperature of the entire duct cold air inlet portion 21 can be maintained relatively high, and the occurrence of condensation can be reliably suppressed.

Further, since the cold air duct 19 has a thick wall thickness of only the duct cold air inlet portion 21, only the duct cold air inlet portion 21 has a large allowance to protrude into the refrigerating chamber 3, and the duct lower portion 22 below that is the conventional one. Can be as small as. Therefore, the decrease in the volume of the refrigerating chamber 3 caused by increasing the wall thickness can be minimized, and the volume of the refrigerating chamber 3 can be minimized while preventing the condensation on the surface of the cold air duct 19 while minimizing the decrease in the volume. Can be secured.

Particularly in the present embodiment, the wall surface of the duct cold air inlet portion 21 on the refrigerator compartment 3 side is inclined such that the wall thickness increases toward the upper side, that is, toward the cooling chamber 9 side. Therefore, the ratio of reducing the volume of the refrigerating chamber can be reduced as compared with the case where the wall thickness of the entire duct cool air inlet portion 21 is increased, and the cool air in the cooling chamber 9 is always present, and the temperature of the portion that is likely to become extremely low is reduced. The volume of the refrigerator compartment 3 can be effectively secured while being efficiently tempered.

Further, since the cold air duct 19 is formed by combining the duct cold air inlet portion 21 and the duct lower portion 22 as separate parts and combining them, the connecting portion connects the duct cold air inlet portion 21 to the duct lower portion 22. A cold heat transmission number can be cut off. Therefore, it is possible to greatly reduce the cold energy transfer from the duct cold air inlet portion 21 that is strongly cooled by the low temperature cold air to the duct lower portion 22, and to prevent a temperature drop due to the cold heat transfer of the duct lower portion 22, thereby condensing the entire cold air duct 19. Prevention can be made more reliable.

Further, in the present embodiment, since the wind shielding plate 27 is provided at the lower portion of the cold air duct 19 for the low temperature storage room, the low temperature cold air blown out from the low temperature storage room cold air outlet 23a is used for the low temperature storage room. It is possible to prevent the surface of the cold air duct 19 from flowing down immediately below the cold air outlet 23a from being cooled. Therefore, it is possible to prevent the surface of the cold air duct 19 from being cooled by the low-temperature cold air and thereby the temperature of the cold air duct 19 to be lowered, thereby reducing the temperature of the portion.

As described above, the refrigerator shown in this embodiment can prevent the occurrence of dew condensation over the entire cold air duct 19 as well as the duct cold air inlet portion 21, and can be a higher quality refrigerator.

As mentioned above, although the refrigerator concerning this invention was demonstrated using this Embodiment, this invention is not limited to this. That is, the embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description so far, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

As described above, the present invention provides a heat-insulating refrigerator main body, a freezer compartment provided at the top of the refrigerator main body, a refrigerator compartment provided at the lower portion thereof, and a cooling chamber for generating cold air provided at the back of the freezer compartment. And a cold air duct vertically installed at the back of the cold room so as to supply cold air from the cold room to the cold room, the cold air duct has a wall thickness of the duct cold air inlet portion connected to the cooling room from the wall thickness of the lower part of the duct. The thickness is also increased.

As a result, the surface temperature of the duct cold air inlet portion where the low temperature cold air from the cooling chamber first touches and strongly cools can be maintained at a relatively high temperature, is a hot and humid area, and a relatively large amount of outside air is generated. Even if it is used in such a way that it enters the refrigerator compartment, it is possible to suppress condensation at the duct cold air inlet. In addition, the protruding margin of the cold air duct into the refrigerating room is large only in the duct cold air inlet part, and the lower part can be made smaller as before, minimizing the decrease in the refrigerating room volume while preventing condensation. The volume of the refrigerated room can be ensured by suppressing.

Further, according to the present invention, the cold air duct is provided with a damper for controlling the cold air at the duct cold air inlet portion, and the wall thickness of at least the upper portion of the duct cold air inlet portion is thicker than the wall thickness of the lower portion of the damper. It is good also as a structure.

As a result, the duct cool air inlet portion located above the damper communicates with the cooling chamber even when the damper is closed, and is in the same freezing temperature zone as the cooling chamber, so it is constantly strongly cooled with low temperature cold air. However, even in the duct cold air inlet portion that is constantly strongly cooled in this way, the surface temperature can be reliably maintained at a high temperature. Therefore, it is possible to reliably suppress dew condensation at the duct cold air inlet portion even in a high temperature and high humidity region, and even when a relatively large amount of outside air enters the refrigerator compartment.

Further, the present invention may be configured such that the wall surface of the duct cold air inlet portion with the increased wall thickness is inclined so that the wall thickness increases toward the upper side.

This makes it possible to secure a larger amount of refrigerator compartment by reducing the ratio of reducing the refrigerator compartment volume compared to increasing the wall thickness of the entire duct cool air inlet. In addition, the cold air flowing through the duct cold air inlet part heats up with the wall of the duct cold air inlet part (cooling the wall of the cold air inlet part), and the temperature becomes higher as it goes down, so the lower part of the duct cold air inlet part The surface temperature can be maintained at a relatively high temperature, and condensation can be suppressed over the entire area of the duct cold air inlet.

Further, the present invention may be configured such that the cold air duct is provided with a wind shielding plate that protrudes toward the inside of the refrigerator compartment at a lower portion of the cold air outlet provided at the duct cold air inlet.

Thus, when cold air blows out from the cold air outlet of the duct cold air inlet, it is possible to prevent a part of the cold air from flowing down directly below the cold air outlet and cooling the surface of the cold air duct in the refrigerator compartment. Therefore, it is possible to prevent the cold duct from cooling the surface of the cold air duct side by the low-temperature cold air so that the temperature is lowered and dew condensation occurs in that portion. That is, it is possible to prevent the occurrence of condensation more reliably over the entire cold air duct.

Further, the present invention may have a configuration in which the duct cold air inlet portion of the cold air duct and the lower duct lower portion thereof are separate parts.

As a result, the cold air duct can block or greatly reduce the cold heat propagation from the duct cold air inlet portion, which is strongly cooled, to the lower portion of the duct, and efficiently prevent the temperature lowering of the lower portion of the duct and ensure the prevention of condensation. It can be. In addition, by sharing the duct cold air inlet portion and preparing a duct lower portion having a different length, it is possible to cope with refrigerators having different capacities, and promote cost reduction.

In the present invention, the refrigerator compartment may be divided into a plurality of spaces by a plurality of storage shelves, and the front portion of the space where the duct cool air inlet portion of the cold air duct is located may be covered with a cover plate.

This prevents the outside air from touching the duct cold air inlet part by the cover plate even if the outside air enters when the door of the refrigerator compartment is opened, and condensation is generated by reducing the chance of the outside air touching the duct cold air inlet part. Can be efficiently prevented.

In addition, as described above, the present invention includes a refrigerator compartment provided in the refrigerator body and a door for opening and closing the refrigerator compartment, and the refrigerator compartment is provided with a plurality of storage shelves so as to be detachable so that a plurality of compartments in the refrigerator compartment can be arranged vertically. And a storage box that can be pulled out. Furthermore, the refrigerator compartment is provided with a plurality of rail portions that support the storage box so that the storage box can be pulled out, so that the installation position of the storage box can be changed.

Further, according to the present invention, the refrigerating room has a door pocket on the inner surface of the door that opens and closes the refrigerating room, and in the refrigerating room, one of the rear surfaces of the space part in which the storage box is removably installed protrudes forward and faces the space part. The inner surface of the door may be configured without a door pocket.

Thus, even if the portion protruding forward of the refrigerator compartment protrudes greatly toward the refrigerator compartment such as a machine room provided for installing the compressor, the storage provided in the space portion corresponding to the elimination of the door pocket The front and rear length of the box can be increased, and a large amount of food can be secured in the drawer storage space in the storage box. And even if there is a door pocket on the inner surface of the door on the side where the installation position of the storage box is changed, the protrusion of this door pocket is replaced with the protrusion margin generated by the machine room etc., so the storage box can be repositioned without any hindrance can do. That is, it is possible to secure the storage volume while sharing the storage box and to change the position of the drawer-type storage space.

In addition, the present invention may be configured such that one of the space portions in which the storage box can be installed so that it can be pulled out is provided with a cold air outlet, and the other is not provided with a cold air outlet.

Thus, when the storage box is installed in a space portion having a cold air outlet, the drawer-type storage space in the storage box becomes a low temperature storage space, and when the storage box is provided in a space portion having no cold air outlet, Becomes a drawer type storage space having a relatively high temperature. Accordingly, the drawer-type storage space in the storage box can be properly used as a storage space with different cooling temperature zones, and various foods can be stored and optimally stored, thereby further improving usability.

Further, the present invention may be configured such that a storage shelf located at the upper part of the storage box is provided at a position close to and covering the upper opening of the storage box.

Thereby, the storage space in the storage box can be more effectively made into a cold room or a storage space having a relatively high temperature, and a refrigerator that can store various foods in a cooler state can be obtained.

(Additional note regarding means for solving the problem)
[Appendix 1] A refrigerator compartment provided in the refrigerator body and a door for opening and closing the refrigerator compartment, wherein the refrigerator compartment is provided with a plurality of storage shelves so that the compartment can be separated into a plurality of upper and lower spaces and pulled out. A refrigerator comprising a free storage box, and further, the refrigerator compartment is provided with a plurality of rail portions that support the storage box so that the storage box can be pulled out, and the installation position of the storage box can be changed.

[Appendix 2] The refrigerating room has a door pocket on the inner surface of the door that opens and closes the refrigerating room, and the refrigerating room has one of the backs of the space part in which the storage box can be pulled out, protruding forward, The refrigerator according to appendix 1, wherein an inner surface of the facing door has no door pocket.

[Appendix 3] The refrigerating room has a structure in which a cold air outlet is provided in one of the space portions in which the storage box can be freely installed, and a cold air outlet is not provided in the other one. Or the refrigerator of Additional remark 2.

[Supplementary Note 4] The refrigerator according to claim 3, wherein the storage shelf located at the top of the storage box is provided in a position close to and covering the upper opening of the storage box.

As described above, the refrigerator of the present invention is a high-quality refrigerator that can suppress the occurrence of dew condensation at the cold air inlet portion above the cold air duct even when it is used in a hot and humid area and a relatively large amount of outside air enters. It can be. Therefore, it can be widely applied to commercial refrigerators as well as general ones.

In addition, the refrigerator added as described above can change the installation position of the storage box together with the storage shelf as required by the user, and can be a convenient refrigerator. Therefore, it can be widely applied to various types of refrigerators such as a top freezer refrigerator and a refrigerator having only a refrigerator.

DESCRIPTION OF SYMBOLS 1 Refrigerator main body 2,102,112 Freezing room 3,103,111 Refrigeration room 4 Outer box 5 Inner box 6

Foam urethane

7,8 Door 9,104 Cooling room 10 Cooler 11 Blower fan 12 Machine room 13

Compressor

14, 14a , 14b, 106, 106a, 115, 115a Storage shelf 15 Cover plate 16 Low temperature storage chamber 17 Rail portion 17a

Auxiliary rail portion

18, 107, 116

Storage box

18a, 108, 117 Retractable storage space 18b

Optional storage box

19, 105 Cold air Duct 19a Duct main portion 19b Duct cover 20 Cold air passage portion 21 Duct cold air inlet portion 22 Duct lower portion 23 Cold air outlet 23a Cold air outlet 24 for cold storage room 24 Cold air outlet 25 Cold air return duct 26 Damper 27 Wind shield 28 Sealing material 29

Deodorizing filter

30,

30a Door Socket

31, 31a, 31b the support members 32 control device 33 illumination device

Claims

Insulating refrigerator main body, freezer compartment provided in the upper part of the refrigerator main body, a refrigerator compartment provided in the lower part thereof, a cooling chamber for generating cold air provided in the back of the freezer compartment, and cold air from the cooling chamber The refrigerator has a cold air duct vertically provided on the back of the cold room so as to be supplied to the cold room, and the cold air duct has a wall thickness of a duct cold air inlet portion connected to the cooling chamber larger than a wall thickness of a lower portion of the duct.
The cool air duct is provided with a cool air control damper at the duct cool air inlet portion, and the wall thickness of at least the upper portion of the duct cool air inlet portion is thicker than the wall thickness of the lower portion of the damper. The refrigerator according to 1.
The refrigerator according to any one of claims 1 and 2, wherein the wall surface of the duct cold air inlet portion having a thick wall thickness is inclined so that the wall thickness increases toward the upper side.
The refrigerator according to any one of claims 1 to 3, wherein the cold air duct is provided with a wind shield projecting toward the inside of the refrigerating chamber at a lower portion of a cold air outlet provided in the duct cold air inlet portion.
The refrigerator according to any one of claims 1 to 4, wherein the cold air duct has a duct cold air inlet portion and a lower portion of the duct below the duct as separate parts.
The cold storage compartment is divided into a plurality of spaces by a plurality of storage shelves, and a front portion of the space where the duct cold air inlet portion of the cold air duct is located is covered with a cover plate. refrigerator.