JP6949220B2 - refrigerator - Google Patents

Description

The present invention relates to a refrigerator in the form of a top freezer.

As a top freezer type refrigerator, for example, those disclosed in Patent Documents 1 and 2 are known. In the refrigerators of these documents, a freezing chamber is formed in the upper part of the refrigerator body, and a refrigerating chamber is formed below the freezing chamber. In these refrigerators, a cooling chamber is formed on the back side of the back of the freezing chamber, and a cooler for generating cold air is provided in the cooling chamber. A cold air duct for supplying the cold air generated by the cooler to the refrigerating chamber is extended in the vertical direction in the central portion of the back surface of the refrigerating chamber.

The refrigerating room is provided with a plurality of storage shelves that partition the space in the refrigerating room. A cold air outlet is formed between each storage shelf and is connected to a cold air duct. The back end of the storage shelf is connected to the back wall of the refrigerator compartment. This configuration prevents a part of the cold air blown out from the cold air outlet from directly flowing downward from between the back wall of the refrigerator compartment and the rear end of the storage shelf.

On the other hand, in these refrigerators, when the freezer is full of food, the storage temperature of each food in the freezer varies. In particular, the temperature of food in the lower central region of the freezer tends to be high. This problem is solved in Patent Document 2 by configuring ribs provided on the floor surface of the freezing chamber and a return air passage in the freezing chamber, and eliminating the heat transfer effect from the refrigerating chamber side. There is.

Further, although the form of the refrigerator is different, Patent Document 3 discloses a technique for stabilizing the cooling storage temperature of food by providing ribs having various shapes in the lower region of the freezing chamber.

Jitsukaisho 59-45771 Jikkai Sho 53-51661 Japanese Unexamined Patent Publication No. 2008-57904

However, in the above-mentioned technique, there is a point to be improved in order to uniformly cool the food in the freezing room while maintaining the convenience as a refrigerator.

Patent Documents 1 and 2 are general top freezer type refrigerators. Then, in order to improve the variation in food temperature in the freezing chamber described above, the technique of Patent Document 2 has been developed.

In the refrigerator of Patent Document 2, ribs are present on the floor surface. However, it is difficult to place food on the ribs, and it is not suitable for loading and storing food. Further, if the distance between the plurality of ribs is narrowed, the ease of placing food is improved. However, if the distance between the plurality of ribs is narrow, the space between the ribs adjacent to each other by the user cannot be cleaned at the time of cleaning, resulting in poor cleaning performance.

Further, in the refrigerator of Patent Document 3, storage in a freezing room when the food is full is not considered. That is, when the food is full in the freezing room, the floor surface provided with the ribs is not flat and unstable, so that the food may fall due to the food collapsing. In particular, in the case of a refrigerator in the form of a top freezer, a freezing chamber is arranged at the top. For this reason, when the food is full in the freezer, the food may collapse and the collapsed food may fall from the freezer, and a user who has opened the freezer door may hit the fallen food.

The present invention is for solving the above-mentioned problems, and provides a refrigerator in which variations in storage temperature during loading of food in the freezing room are suppressed, and cleaning of the freezing room and convenience for the user are improved. The purpose is to provide.

The refrigerator according to the present invention is a top-freezer-type refrigerator in which a freezing chamber and a refrigerating chamber are configured in this order from the top, and a partition wall is provided between the freezing chamber and the refrigerating chamber. A plurality of ribs provided on the floor surface of the chamber and a floor shelf provided on the plurality of ribs and in contact with the upper end of the rib are provided , and the floor shelf is removable and is a freezer compartment. the left and right side surfaces of the pair of rails are provided, the floor shelf is shall be held sandwiched by vertically with the plurality of ribs and said pair of rails.

According to the refrigerator according to the present invention, on the plurality of ribs, floor shelves in contact with the upper ends of the ribs are provided. Therefore, a plurality of ribs are provided, and it is possible to suppress heat intrusion due to heat transfer from the refrigerating chamber arranged below the freezing chamber. Further, an air passage through which cold air flows is formed between adjacent ribs among the plurality of ribs, and food on the floor shelf can be cooled from below the floor shelf. Therefore, it is possible to suppress variations in the storage temperature when food is loaded in the freezing room. Further, since food is placed on the floor shelf instead of on the rib and the upper surface of the floor shelf becomes dirty due to use, the user only needs to clean the upper surface of the floor shelf, and the cleanability of the freezing room can be improved. Further, since the food is placed on the shelf on the floor instead of on the rib, the food is placed in a stable state, so that the food does not easily collapse when the food is full in the freezing room, and the convenience of the user can be improved. Therefore, it is possible to suppress variations in the storage temperature when food is loaded in the freezing room, and it is possible to improve the cleanability of the freezing room and the convenience of the user.

It is a front view which shows the appearance of the refrigerator which concerns on Embodiment 1 of this invention. It is an internal block diagram which shows the structure in the refrigerator including the cooling air passage which concerns on Embodiment 1 of this invention. It is an internal block diagram which shows the structure in the refrigerator including the return air passage which concerns on Embodiment 1 of this invention. It is a cross-sectional view which shows the freezing chamber in the refrigerator which concerns on Embodiment 1 of this invention in the ZZ cross section of FIG. It is a vertical cross-sectional view which shows the freezing chamber in the refrigerator which concerns on Embodiment 1 of this invention in the YY cross section of FIG. FIG. 5 is an enlarged view showing a portion A of FIG. 5 at which a claw portion of a floor shelf and a rail are fixed in a refrigerator according to a first embodiment of the present invention. It is explanatory drawing which shows the 1st operation which attaches the floor shelf in the refrigerator which concerns on Embodiment 1 of this invention. It is explanatory drawing which shows the 2nd operation which attaches the floor shelf in the refrigerator which concerns on Embodiment 1 of this invention. It is explanatory drawing which shows the 3rd operation which attaches the floor shelf in the refrigerator which concerns on Embodiment 1 of this invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In each figure, those having the same reference numerals are the same or equivalent thereof, and they are common in the entire text of the specification. Further, in the cross-sectional view, hatching is omitted as appropriate in view of visibility. Furthermore, the forms of the components shown in the full text of the specification are merely examples and are not limited to these descriptions. In addition, the positional relationship of each component in the specification, such as the vertical relationship, is, in principle, the one when the refrigerator 1 is installed in a usable state.

Embodiment 1.
<Construction of refrigerator>
FIG. 1 is a front view showing the appearance of the refrigerator 1 according to the first embodiment of the present invention. FIG. 2 is an internal configuration diagram showing a configuration inside the refrigerator 1 including the cooling air passage 10 according to the first embodiment of the present invention.

As shown in FIG. 1, the refrigerator 1 includes a heat insulating box body in which the front side, which is the front side, is opened and a storage space is formed inside. The heat insulating box body is composed of a steel outer box, a resin inner box, and a heat insulating material filled in the space between the outer box and the inner box. The storage space formed inside the heat insulating box is divided into a plurality of storage chambers in which the object to be cooled is stored by a plurality of partition members. The refrigerator 1 includes a freezing chamber 2 and a refrigerating chamber 3 in this order from the top. As shown in FIG. 2, a partition wall 7 is provided between the freezing chamber 2 and the refrigerating chamber 3. Refrigerator 1 is such a top freezer type refrigerator.

As shown in FIG. 2, the refrigerator 1 is arranged as a plurality of storage chambers in the freezing chamber 2 arranged at the top, the refrigerating chamber 3 arranged below the freezing chamber 2, and the bottom of the refrigerating chamber 3. A vegetable compartment 4 to be used and a chilled chamber 5 arranged at the uppermost stage of the refrigerator compartment 3 are provided. Here, as long as the refrigerating chamber 3 is installed in the lower region of the freezing chamber 2, the type and number of storage chambers included in the refrigerator 1 are not limited to these. Further, in the following, the object to be cooled will be described as being a food product.

As shown in FIG. 2, a cooling device for cooling each storage chamber is arranged on the back side of the refrigerator 1. The cooling device includes a compressor 6 that compresses and discharges the refrigerant, a cooler 8 that functions as an evaporator to cool the air, and a blower fan 9 that moves the cold air generated by the cooler 8. The refrigerator 1 has a cooling air passage 10 through which cold air flows and in which a cooler 8 and a blower fan 9 are installed.

In the compressor 6, the refrigerant discharge side is connected to a condenser (not shown), and the refrigerant suction side is connected to the cooler 8. The cooler 8 functions as an evaporator and exchanges heat between the refrigerant passing through itself and the air in the cooling air passage 10 to generate cold air. The compressor 6 and the cooler 8 together with a condenser and expansion means (not shown) constitute a refrigeration cycle circuit. The blower fan 9 supplies cold air to the freezing chamber 2, the refrigerating chamber 3, the vegetable chamber 4, and the chilled chamber 5 via the cooling air passage 10.

The cooling air passage 10 is provided in the vertical direction in the inner wall panel 19 formed in the housing 50 in the vertical direction from the upper side to the lower side in the refrigerator 1. More specifically, the cooling air passage 10 is provided on the back side of the back surface of the freezing chamber 2, the refrigerating chamber 3, and the vegetable compartment 4. In the cooling air passage 10, the opening degree of the damper 11 changes, and the amount of cold air passing through the cooling air passage 10 is adjusted.

The cold air cooled by heat exchange with the refrigerant in the cooler 8 by the operation of the refrigerating cycle circuit is passed through the cooling air passage 10 on the back surface of the refrigerator 1 by the blower fan 9 to a storage room such as the freezing room 2 or the refrigerating room 3. Is supplied to.

FIG. 3 is an internal configuration diagram showing a configuration inside the refrigerator including the return air passages 16 and 22 according to the first embodiment of the present invention. As shown in FIG. 3, the cold air that has passed through the refrigerating chamber 3 and the like is returned to the cooler 8 through the return air passage 16, cooled again, and sent to each storage chamber.

As shown in FIGS. 2 and 3, the refrigerator 1 has a control device 100. Then, the temperature of each storage chamber is detected by a temperature sensor (not shown) installed in each storage chamber. The control device 100 controls various devices in the refrigerator 1 so that the temperature detected by the temperature sensor becomes the temperature set in each storage chamber. For example, the control device 100 controls the opening degree of the damper 11 installed in the cooling air passage 10, the output of the compressor 6, the amount of air blown by the blower fan 9, and the like.

<Freezing room 2>
The freezing chamber 2 is a storage chamber set in a freezing temperature zone of less than 0 ° C., for example, −18 ° C. or lower. As shown in FIGS. 2 and 3, the freezing chamber 2 is provided above the refrigerating chamber 3 and stores food to be frozen. The freezing chamber 2 is provided with a rotary door 14a for opening and closing an opening, for example, a Kannon opening type. The door 14a of the freezing chamber 2 may be a single rotary door instead of the Kannon opening type door. By opening and closing the door 14a, the space between the freezing chamber 2 and the outside of the refrigerator 1 is opened and closed. Further, the inner wall panel 19 serves as a rear wall in the freezing chamber 2. As will be described later, a plurality of ribs 18 and a floor shelf 15 are provided in the freezing chamber 2.

<Refrigerator room 3>
The refrigerating room 3 is a storage room set in a refrigerating temperature range of, for example, about 3 to 5 ° C. and storing food. As shown in FIG. 2, the refrigerating room 3 is provided with a shelf 12 or the like on which food or the like is placed. The opening formed on the front surface of the refrigerating chamber 3 is provided with a rotary door 14b for opening and closing the opening, for example, a Kannon opening type. Here, the door 14b of the refrigerator compartment 3 may be a single rotary door instead of the Kannon opening type door. Further, the inner wall panel 19 serves as a rear wall in the refrigerator compartment 3. Then, as shown in FIGS. 2 and 3, in the refrigerator 1, a chilled chamber 5 is provided at the uppermost part in the refrigerating chamber 3.

The storage container 30 is a container for storing food to be stored in the chilled chamber 5. The storage container 30 is, for example, a drawer-type container that can move in the front-rear direction along a rail (not shown) provided inside the side wall of the chilled chamber 5. Here, the rail may be on the bottom shelf of the chilled chamber 5. Moreover, the rail does not necessarily have to be installed. The user can pull out the storage container 30 from the chilled chamber 5 and take in and out the food stored in the storage container 30 through the opening on the upper surface of the storage container 30. As the material of the storage container 30, for example, polystyrene or the like is used as in the storage container of a general refrigerator. However, the present invention is not limited to this.

A front wall 13 movably fixed to the partition wall 7 or the side wall is provided at the opening of the upper space on the front side of the chilled chamber 5. By pulling out the storage container 30, the front wall 13 rotates and the door 14b opens.

<Vegetable room 4>
The vegetable compartment 4 is a storage chamber having a set temperature higher than that of the refrigerating chamber 3, for example, a refrigerating temperature range of about 3 to 7 ° C. The vegetable compartment 4 has a space for storing stored items, and is a storage chamber particularly suitable for refrigerating vegetables among foods. As shown in FIGS. 2 and 3, the vegetable compartment 4 is provided at the lowermost portion in the refrigerator compartment 3.

<Partition wall 7>
As shown in FIG. 2, the partition wall 7 is a wall provided between the freezing chamber 2 and the refrigerating chamber 3. The partition wall 7 is filled with a heat insulating material in order to prevent heat transfer from the refrigerating chamber 3 to the freezing chamber 2 to prevent heat from entering. As shown in FIG. 3, the partition wall 7 has a return air passage 16 built-in, and has a return air passage inlet 16a which is a suction port for sucking cold air from the inside of the refrigerating chamber 3 into the return air passage 16. The return air passage inlet 16a is formed in a portion on the front side, which is the door 14b side of the refrigerating chamber 3.

<Cold air flow>
Next, the flow of cold air produced by the cooler 8 will be described with reference to FIGS. 2 and 3. Here, the arrows in FIGS. 2 and 3 indicate the flow of cold air. The cold air produced by the cooler 8 is divided into cold air sent to the freezing chamber 2 side and the refrigerating chamber 3 side through the blower fan 9. The cold air heading for the refrigerating chamber 3 passes through the cooling air passage 10 and is separated by the damper 11 into the cold air heading for the chilled chamber 5 and the refrigerating chamber 3. Then, the cold air heading for the refrigerating room 3 passes on the shelf, gradually rises from the lower side to the upper side in front of the refrigerating room 3, and heads for the return air passage 16.

<Return air passage 16>
The return air passage inlet 16a is formed in the front portion of the refrigerator 1. Therefore, the cooling air can be efficiently blown out from the outlets 31a to 31f arranged on the inner side in the refrigerating chamber 3. The position of the return air passage inlet 16a is inevitably far from the outlets 31a to 31f. Therefore, even if the air velocity of the cooling air is slowed down, each room can be efficiently cooled without the cooling air short-passing.

On the other hand, when the position of the return air passage 16 is not on the front side of the refrigerator 1 but on the back side, there is a high possibility of a short pass with the return air passage entrance unless the wind speed of the cooling air is secured to some extent, and the short pass is avoided. In order to do so, the wind speed had to be secured above a certain speed. However, in the refrigerator 1, the air velocity of the cooling air is not particularly limited, and the food in the vicinity of the outlets 31a to 31f is not unintentionally frozen, and the food can be cooled by the cooling air suitable for cooling and storing the food.

When the return air passage of the refrigerator compartment is configured on the lower side of the refrigerator compartment, if there is a return air passage entrance on the front side, there is a high possibility of spilling food juice such as gravy or food residue, and the return air passage is clogged. I will end up. For this reason, it was difficult to realize the return air passage on the lower side of the refrigerator compartment in order to maintain the quality of the refrigerator. Therefore, the position of the return air passage was basically located on the back side. However, in the refrigerator 1, a return air passage 16 is formed in the partition wall 7 above the refrigerating chamber 3. Therefore, even if food juice such as gravy or food residue is spilled, there is no concern that the return air passage 16 will be clogged. Then, a return air passage 16 having a return air passage inlet 16a on the front side of the refrigerating chamber 3 can be formed.

<Rib 18 in the freezer>
FIG. 4 is a cross-sectional view showing a freezing chamber 2 in the refrigerator 1 according to the first embodiment of the present invention in a ZZ cross section of FIG. FIG. 5 is a vertical sectional view showing a freezing chamber 2 in the refrigerator 1 according to the first embodiment of the present invention in a YY cross section of FIG. In FIG. 4, the floor shelf 15 is shown by a broken line so that the rib 18 can be visually recognized.

As shown in FIGS. 4 and 5, a plurality of ribs 18 are provided on the floor surface 21 of the freezing chamber 2. The adjacent distance between the plurality of ribs 18 is a width that allows a human finger to enter between the adjacent ribs 18 among the plurality of ribs 18. Specifically, the distance between the adjacent ribs 18 is preferably about 15 to 20 mm. This is because if the distance between the ribs 18 becomes too narrow, the cleanability between the adjacent ribs 18 is impaired. If the distance between the adjacent ribs 18 is about 15 to 20 mm, there is a gap for the user's finger to enter sufficiently, and that portion can be sufficiently cleaned.

As shown in FIG. 5, the upper end portions 18a of the plurality of ribs 18 have a rounded arc shape. If the upper end 18a of the rib 18 has a square shape with an edge, the user may be injured by the edge during cleaning. If the upper end portion 18a of the rib 18 has a rounded shape such as an arc, there is no sharp portion such as an edge, and the user is not injured during cleaning. The arc at this time is preferably about R3 to R4. If too much R is added, the stability of the food will deteriorate when the food is placed directly on the rib 18.

The height of the rib 18 is preferably about 5 mm. If the rib 18 is too high, the stability of the food deteriorates when the food is placed directly on the rib 18 as described above. Further, if the rib 18 is made too high, the substantial food storage space as the freezing chamber 2 is reduced. On the other hand, if the height of the rib 18 is too low, the height of the return air passage 22 such as a duct formed by the gap between the rib 18 and the floor shelf 15 becomes too low, and it becomes difficult for the cooling air to flow. That is, the height of the plurality of ribs 18 is a gap between the adjacent ribs 18, the floor shelf 15, and the floor surface 21 among the plurality of ribs 18 below the upper end 18a of the ribs 18 in contact with the floor shelf 15. Is the height that forms. A return air passage 22 through which cold air flows from the front side to the back side of the room is formed between the adjacent ribs 18 among the plurality of ribs 18 and the floor shelf 15 and the floor surface 21.

As shown in FIGS. 4 and 5, the plurality of ribs 18 are linearly extended from the front surface side to the back surface side of the room. Therefore, the plurality of ribs 18 are arranged in parallel in a straight line from the front surface side to the back surface side of the room.

<Floor shelf 15>
As shown in FIGS. 4 and 5, on the plurality of ribs 18, floor shelves 15 in contact with the upper end portions 18a of the ribs 18 are provided. The floor shelf 15 is removable. The lower surface of the floor shelf 15 has a recess 15a in which a portion of the rib 18 in contact with the upper end portion 18a is recessed upward. As a result, the recess 15a on the lower surface of the floor shelf 15 fits into the upper end 18a of the rib 18, and the floor shelf 15 is in a stable fixed state. Further, the floor shelf 15 has a sufficient contact area with the rib 18.

FIG. 6 is an enlarged view showing a fixed portion between the claw portion 24 of the floor shelf 15 and the rail 23 in the refrigerator 1 according to the first embodiment of the present invention by enlarging the portion A of FIG. As shown in FIGS. 5 and 6, a pair of rails 23 are provided on the left and right side surfaces in the freezing chamber 2. The pair of rails 23 are formed from the central portion to the inner side on the side surface in the freezing chamber 2. The floor shelf 15 is sandwiched and held in the vertical direction between a plurality of ribs 18 and a pair of rails 23. The floor shelf 15 has a pair of claws 24 that are hooked on each of the pair of rails 23. A pair of claws 24 is provided on the upper part of the floor shelf 15. In the lower region of the floor shelf 15, the height of the rib 18 is restricted, and a sufficient region for providing the claw portion cannot be secured. Further, the claws on the lower part of the floor shelf 15 cannot be visually recognized, and the attachability of the floor shelf 15 is impaired.

The side surface of the floor shelf 15 is fixed by a pair of rails 23 and a pair of claws 24 hooked on each of the pair of rails 23 in the same manner as the shelf structure of a conventional refrigerator. As a result, the lower surface of the floor shelf 15 can secure a contact area with the rib 18, frictional resistance is increased, and the floor shelf 15 can be securely fixed. Therefore, the floor shelf 15 is more firmly fixed than the conventional refrigerator shelf, and food collapse due to shelf shaking can be prevented.

A resin frame is attached around the floor shelf 15. In order for the floor shelf 15 to be assembled into the refrigerator 1, a resin frame needs to be attached around the floor shelf 15. Further, the member of the floor shelf 15 itself may be resin, glass, or the like.

Further, the floor shelf 15 may be made of a lightweight metal-based substance having excellent thermal conductivity. The cooling efficiency of the floor shelf 15 itself and the cooling efficiency of food can be improved. Further, considering the convenience of the user, the floor shelf 15 is preferably made lighter so as not to burden the user at the time of cleaning, and is preferably made of a lightweight metal such as aluminum.

<Outlet 32>
As shown in FIGS. 2 and 3, above the cold air suction port 33 in the upper part of the inner wall panel 19 which is the inner surface of the freezing chamber 2, the air outlet which blows out the cold air flowing from the inner side of the room to the front side in the upper part of the room. 32 is formed. As a result, even if a large amount of food is loaded in the freezing chamber 2, cold air can be sent into the freezing chamber 2.

<Cold air suction port 33>
As shown in FIG. 3, a cold air suction port 33 is formed in the lower part of the inner wall panel 19 which is the inner surface of the freezing chamber 2. The cold air suction port 33 has a cold air flowing above the floor shelf 15 from the front side of the room to the back side and a cold air flowing through the return air passage 22 from the front side of the room to the back side of the room 2 on the back side of the back surface of the freezing room 2. Return to the cooling chamber 40 formed in. The cold air suction port 33 is a first suction port 33a in which cold air flowing above the floor shelf 15 from the front side to the back side of the room is returned to the cooling room 40 at the lower part of the inner wall panel 19 which is the back surface of the freezing room 2. Have. The cold air suction port 33 is a return air passage 22 below the first suction port 33a at the lower part of the inner wall panel 19 which is the back surface of the freezing chamber 2, and the cold air flowing from the front side to the back side of the room is returned to the cooling chamber 40. It has a second suction port 33b. As a result, even if a large amount of food is loaded in the freezing chamber 2, cold air can be sucked into the cold air suction port 33 from the freezing chamber 2. It should be noted that the cold air suction port 33 is not formed in two of the first and second suction ports 33a and 33b, but may be one large one.

<Modification example 1>
In the refrigerator 1 described above, the chilled chamber 5 formed in the upper region in the refrigerating chamber 3 below the freezing chamber 2 may be a switching chamber. The switching room is a partial room set in a minus temperature zone of about -3 ° C, which is lower than the refrigerating room 3, or a supercooled storage room of about 0 to -3 ° C, which is higher than the partial room. It is a room that can be switched to the chilled room. When such a switching chamber is provided, a temperature range suitable for the food to be stored in the switching chamber can be selected, and the convenience of the user can be improved.

<Operation to attach the floor shelf 15>
FIG. 7 is an explanatory diagram showing a first operation of mounting the floor shelf 15 in the refrigerator 1 according to the first embodiment of the present invention. FIG. 8 is an explanatory diagram showing a second operation of mounting the floor shelf 15 in the refrigerator 1 according to the first embodiment of the present invention. FIG. 9 is an explanatory diagram showing a third operation of mounting the floor shelf 15 in the refrigerator 1 according to the first embodiment of the present invention.

As shown in FIG. 7, the floor shelf 15 is placed in the freezing chamber 2 with the inner side of the room lowered toward the rib 18. At this time, the floor shelf 15 that has penetrated to the center of the freezing chamber 2 abuts on the front end of the pair of rails 23. Next, as shown in FIG. 8, the floor shelf 15 is lowered to the top of the rib 18 on the front side of the room. As a result, the floor shelf 15 keeps the shelf surface horizontal, and the recess 15a on the lower surface fits into the upper end 18a of the rib 18. Next, as shown in FIG. 9, the floor shelf 15 is slid parallel to the inner side of the room. Here, since the plurality of ribs 18 are linearly extended from the front side to the back side of the room, the floor shelf 15 is smooth while maintaining the state in which the recess 15a on the lower surface is fitted to the upper end 18a of the rib 18. Slide to. At this time, each of the pair of claws 24 is hooked on each of the pair of rails 23 provided on the left and right side walls in the freezing chamber 2, and the floor shelf 15 faces the inner side of the room. Then, the back end of the floor shelf 15 abuts against the back of the freezing chamber 2 and is firmly fixed. When removing the floor shelf 15, the floor shelf 15 may be slid horizontally to the front side of the room.

Further, here, a case where a pair of rails 23 are provided on the inner side of the room from the central part in the freezing room 2 has been described. However, it is not limited to this. The pair of rails 23 may be formed longer from the front side of the room to the back side of the room from the center part in the freezing chamber 2. In this case, the floor shelf 15 is slid parallel to the inner side of the room with the shelf surface horizontal from the beginning when it is put in the freezing room 2. At this time, each of the pair of claw portions 24 is hooked on each of the pair of rails 23 provided on the left and right side walls in the freezing chamber 2.

<Action of freezing room 2>
By configuring the rib 18, the floor shelf 15 and the return air passage 22 as described above, the stability of the floor shelf 15 can be ensured. In addition, the floor shelf 15 itself can be cooled. As a result, it is possible to suppress the intrusion of heat amount due to heat transfer from the refrigerating chamber 3, and it is possible to prevent the food temperature from fluctuating during food preservation even if the food is loaded in the freezing chamber 2. Further, by firmly fixing the floor shelf 15, food collapse on the floor shelf due to the shaking of the floor surface 21 can be prevented.

<Effect of Embodiment 1>
According to the first embodiment, the refrigerator 1 includes a freezing chamber 2 and a refrigerating chamber 3 in this order from the top. A partition wall 7 is provided between the freezing room 2 and the refrigerating room 3. Refrigerator 1 is in the form of a top freezer. A plurality of ribs 18 are provided on the floor surface 21 of the freezing chamber 2. On the plurality of ribs 18, floor shelves 15 in contact with the upper end portions 18a of the ribs 18 are provided.

According to this configuration, a plurality of ribs 18 are provided, and heat intrusion due to heat transfer from the refrigerating chamber 3 arranged below the freezing chamber 2 can be suppressed. Further, a return air passage 22 through which cold air flows is formed between the adjacent ribs 18 among the plurality of ribs 18, and food on the floor shelf 15 can be cooled from below the floor shelf 15. Therefore, it is possible to suppress variations in the storage temperature when food is loaded in the freezing chamber 2. Further, since food is placed on the floor shelf 15 instead of on the rib 18, and the upper surface of the floor shelf 15 becomes dirty due to use, the user only needs to clean the upper surface of the floor shelf 15, and the cleanability of the freezing chamber 2 is improved. can. Further, since the food is placed on the floor shelf 15 instead of on the rib 18, the food placement state is stable, so that the food collapse is less likely to occur when the food is full in the freezing chamber 2, and the convenience of the user can be improved. .. Therefore, it is possible to suppress variations in the storage temperature when food is loaded in the freezing chamber 2, and it is possible to improve the cleanability of the freezing chamber 2 and the convenience of the user.

According to the first embodiment, the heights of the plurality of ribs 18 are the adjacent ribs 18, the floor shelf 15 and the floor surface of the plurality of ribs 18 below the upper end 18a of the ribs 18 in contact with the floor shelf 15. It is a height that forms a gap between the 21 and the return air passage 22.

According to this configuration, a plurality of ribs 18 having a height forming a return air passage 22 which is a gap are provided, and heat transfer due to heat transfer from the refrigerating chamber 3 arranged below the freezing chamber 2 can suppress heat intrusion. Further, a return air passage 22 through which cold air flows is formed in a gap between adjacent ribs 18 among the plurality of ribs 18, and food on the floor shelf 15 can be cooled from below the floor shelf 15. Therefore, it is possible to suppress variations in the storage temperature when food is loaded in the freezing chamber 2.

According to the first embodiment, the adjacent distance between the plurality of ribs 18 is a width of about 15 to 20 mm from which a human finger can be inserted between the adjacent ribs 18 among the plurality of ribs 18.

According to this configuration, the user can put a finger between the adjacent ribs 18 for cleaning, and the cleanability of the freezing chamber 2 can be improved.

According to the first embodiment, the upper end portions 18a of the plurality of ribs 18 have a rounded shape.

According to this configuration, even if the user touches the rib 18, he / she will not be injured, and the safety of the freezing chamber 2 will be improved.

According to the first embodiment, the plurality of ribs 18 are linearly extended from the front surface side to the back surface side of the room.

According to this configuration, a return air passage 22 through which cold air flows is formed in a gap between adjacent ribs 18, and food on the floor shelf 15 can be cooled from below the floor shelf 15. In particular, the cold air returns from the front side to the back side of the freezing chamber 2 and flows straight in parallel through the gap serving as the air passage 22 without being obstructed by other paths, and the cooling from below the floor shelf 15 flows in the freezing chamber. It can be carried out evenly on the entire floor surface 21 of 2. Therefore, it is possible to suppress variations in the storage temperature when food is loaded in the freezing chamber 2.

According to the first embodiment, the floor shelf 15 is removable.

According to this configuration, the floor shelf 15 can be removed and cleaned, and the cleanability of the freezing chamber 2 can be improved. Therefore, the floor shelf 15 on which the food is placed can be kept clean, and the stability of the food in the freezing chamber 2 can be maintained. Further, it is not necessary to narrow the distance between the adjacent ribs as in the conventional case, and the return air passage 22 using the gap between the adjacent ribs 18 can be secured.

According to the first embodiment, the lower surface of the floor shelf 15 has an upwardly recessed recess 15a in which a portion of the plurality of ribs 18 in contact with the upper end 18a fits into the rib 18.

According to this configuration, the floor shelf 15 is surely in contact with the upper end portion 18a of the plurality of ribs 18 so as not to be moved by the recess 15a. Therefore, it is possible to prevent food from collapsing due to the movement of the floor shelf 15. Therefore, the stability of the freezing chamber 2 when loading food can be maintained. Further, when mounting the floor shelf 15, the user can fit the recess 15a into the rib 18 and slide the floor shelf 15 toward the back of the room to fix it, so that the floor shelf 15 can be easily mounted.

According to the first embodiment, a pair of rails 23 are provided on the left and right side surfaces in the freezing chamber 2. The floor shelf 15 is sandwiched and held in the vertical direction between a plurality of ribs 18 and a pair of rails 23.

According to this configuration, the floor shelf 15 is held by being sandwiched between a plurality of ribs 18 and a pair of rails 23 in the vertical direction. Therefore, it is possible to prevent food from collapsing due to the movement of the floor shelf 15. Therefore, the stability of the freezing chamber 2 when loading food can be maintained.

According to the first embodiment, the floor shelf 15 has a pair of claws 24 hooked on each of the pair of rails 23.

According to this configuration, each of the pair of claws 24 of the floor shelf 15 is hooked on each of the pair of rails 23, and the floor shelf 15 can be securely fixed. Therefore, it is possible to prevent food from collapsing due to the movement of the floor shelf 15. Therefore, the stability of the freezing chamber 2 when loading food can be maintained.

According to the first embodiment, the floor shelf 15 is made of a lightweight metal-based substance having excellent thermal conductivity.

According to this configuration, the cooling efficiency from the floor shelf 15 to the food is good, and the food placed on the floor shelf 15 can be cooled better from the return air passage 22 below the floor shelf 15.

According to the first embodiment, a return air passage 22 through which cold air flows from the front side to the back side of the room is formed between the adjacent ribs 18 among the plurality of ribs 18, the floor shelf 15, and the floor surface 21. ..

According to this configuration, a return air passage 22 through which cold air flows is formed in a gap between adjacent ribs 18, and food on the floor shelf 15 can be cooled from below the floor shelf 15. Therefore, it is possible to suppress variations in the storage temperature when food is loaded in the freezing chamber 2.

According to the first embodiment, in the lower part of the back surface of the freezing chamber 2, the cold air flowing above the floor shelf 15 from the front side of the room to the back side and the return air passage 22 from the front side of the room to the back side of the room A cold air suction port 33 is formed in which the flowing cold air is returned to the cooling chamber 40 provided on the back side of the back surface of the freezing chamber 2.

According to this configuration, cold air flows above the floor shelf 15 from the front side of the room to the back side, and flows from the front side of the room to the back side through a gap serving as a return air passage 22 between the adjacent ribs 18. Therefore, the food and the floor shelf 15 can be efficiently cooled as a whole. Therefore, it is possible to suppress variations in the storage temperature when food is loaded in the freezing chamber 2.

According to the first embodiment, the cold air suction port 33 is the first suction port in which the cold air flowing from the front side to the back side of the room above the floor shelf 15 at the lower part of the back surface of the freezing room 2 is returned to the cooling chamber 40. It has a mouth 33a. The cold air suction port 33 is a second suction port in which the cold air flowing from the front side to the back side of the room through the return air passage 22 below the first suction port 33a in the lower part of the back surface of the freezing chamber 2 is returned to the cooling chamber 40. It has 33b.

According to this configuration, cold air flows from the front side to the back side of the room above the floor shelf 15 toward the first suction port 33a. At the same time, cold air flows from the front side to the back side of the room through a gap serving as a return air passage 22 between the adjacent ribs 18 toward the second suction port 33b. Therefore, the food and the floor shelf 15 can be efficiently cooled as a whole. Therefore, it is possible to suppress variations in the storage temperature when food is loaded in the freezing chamber 2.

According to the first embodiment, an outlet 32 is formed above the cold air suction port 33 in the upper part of the inner surface of the freezing chamber 2 to blow out the cold air flowing from the inner side of the room to the front side in the upper part of the room.

According to this configuration, cold air flowing from the inner side of the room to the front side of the upper part of the room is blown out from the air outlet 32 above the cold air suction port 33 into the freezing chamber 2. The blown cold air changes its flow downward on the front side in the freezing chamber 2. Then, the cold air on the front side in the freezing chamber 2 flows above the floor shelf 15 from the front side of the room to the back side, and at the same time, a gap serving as a return air passage 22 between the adjacent ribs 18 is formed from the front side of the room to the back side. Flow to the side. Therefore, the food and the floor shelf 15 can be efficiently cooled as a whole. Therefore, it is possible to suppress variations in the storage temperature when food is loaded in the freezing chamber 2.

According to the first embodiment, the partition wall 7 is filled with a heat insulating material.

According to this configuration, a heat insulating material is provided in the partition wall 7, and heat transfer due to heat transfer from the refrigerating chamber 3 arranged below the freezing chamber 2 can suppress heat intrusion. Therefore, the efficiency of cooling the freezing chamber 2 is good.

According to the first embodiment, the refrigerator 1 is formed in the upper region in the refrigerating chamber 3 below the freezing chamber 2, and has a partial chamber having a negative temperature zone lower than the refrigerating chamber 3 or a positive temperature zone higher than the partial chamber 3. The chilled chamber is equipped with a switchable chamber.

According to this configuration, in the refrigerator 1 of the top freezer form, a switching chamber having a low temperature zone is provided at a lower position closest to the freezing chamber 2, and the cooling chamber 40 provided on the back side of the back surface of the freezing chamber 2 is provided. Good cooling efficiency.

1 refrigerator, 2 freezer, 3 refrigerator, 4 vegetable room, 5 chilled room, 6 compressor, 7 partition wall, 8 cooler, 9 blower fan, 10 cooling air passage, 11 damper, 12 shelves, 13 front wall, 14a door, 14b door, 15 floor shelf, 15a recess, 16 return air passage, 16a return air passage entrance, 18 ribs, 18a upper end, 19 inner wall panel, 21 floor surface, 22 return air passage, 23 rails, 24 claws , 30 storage container, 31a to 31f air outlet, 32 air outlet, 33 cold air suction port, 33a first suction port, 33b second suction port, 40 cooling chamber, 50 housing, 100 control device.

Claims (14)

A top freezer-type refrigerator in which a freezer compartment and a refrigerator compartment are configured in order from the top, and a partition wall is provided between the freezer compartment and the refrigerator compartment.
A plurality of ribs provided on the floor of the freezing chamber and
A floor shelf provided on the plurality of ribs and in contact with the upper end of the ribs,
Equipped with a,
The floor shelf is removable and
A pair of rails are provided on the left and right sides of the freezing chamber.
Refrigerator said floor shelves, that will be held the said plurality of ribs and a pair of rails is sandwiched in the vertical direction. The height of the plurality of ribs is a height that forms a gap between the adjacent ribs of the plurality of ribs, the floor shelf, and the floor surface below the upper end of the ribs in contact with the floor shelf. The refrigerator according to claim 1. The refrigerator according to claim 1 or 2, wherein the adjacent distance between the plurality of ribs is a width of 15 to 20 mm between the adjacent ribs among the plurality of ribs. The refrigerator according to any one of claims 1 to 3, wherein the upper ends of the plurality of ribs have a rounded shape. The refrigerator according to any one of claims 1 to 4, wherein the plurality of ribs are linearly extended from the front surface side to the back surface side of the room. The refrigerator according to any one of claims 1 to 5, wherein the lower surface of the floor shelf has an upwardly recessed recess in which a portion in contact with the upper ends of the plurality of ribs fits into the rib. The refrigerator according to any one of claims 1 to 6, wherein the floor shelf has a pair of claws hooked on each of the pair of rails. The refrigerator according to any one of claims 1 to 7 , wherein the floor shelf is made of a metal-based substance having excellent thermal conductivity. Any one of claims 1 to 8 in which a return air passage through which cold air flows from the front side to the back side of the room is formed between adjacent ribs, the floor shelf, and the floor surface among the plurality of ribs. The refrigerator described in. At the lower part of the back surface of the freezing chamber, cold air flowing above the floor shelf from the front side of the room to the back side and cold air flowing through the return air passage from the front side of the room to the back side of the room are contained in the freezing chamber. The refrigerator according to claim 9 , wherein a cold air suction port is formed so as to be returned to a cooling chamber formed on the back side of the back surface of the refrigerator. The cold air suction port is a first suction port in which cold air flowing above the floor shelf from the front side to the back side of the room is returned to the cooling room at the lower part of the back surface of the freezing room, and the back of the freezing room. The refrigerator according to claim 10 , further comprising a second suction port in which cold air flowing through the return air passage from the front side to the back side of the room is returned to the cooling chamber below the first suction port in the lower part of the surface. .. The refrigerator according to claim 10 or 11 , wherein an outlet for blowing cold air flowing from the back side to the front side of the room is formed above the cold air suction port in the upper part of the back surface of the freezing room. The refrigerator according to any one of claims 1 to 12 , wherein the partition wall is filled with a heat insulating material. Any of claims 1 to 13 , which is formed in the upper region of the refrigerating chamber below the freezing chamber and is provided with a switching chamber that can be switched between a chamber having a negative temperature zone of about -3 ° C or a chamber having a temperature of about 0 to -3 ° C. The refrigerator according to item 1.

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