JP2015004489A - Refrigerator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a refrigerator capable of enhancing airtightness of a vegetable chamber air supply passage and maintaining a temperature in the vegetable chamber properly, while maintaining excellent assemblability.SOLUTION: A refrigerator includes: a storage chamber partitioned into a refrigerating chamber 3 at an upper stage, freezing chambers 4-6 at a middle stage and a vegetable chamber 7 at a lower stage; and a vegetable chamber air supply passage 18 for supplying cold air to the vegetable chamber 7 via the depth of the freezing chambers 4-6. The vegetable chamber air supply passage 18 is formed as space partitioned by a vegetable chamber air passage cover 26 provided independently apart from a partition body 25 which partitions a cooling chamber 13 and a front surface cover 24 which partitions a freezing chamber air supply passage 14. Thereby, assemblability of the vegetable chamber air supply passage 18 improves and airtightness can be improved. As a result, air leakage can be prevented from the cooling chamber 13 and the freezing chamber air supply passage 14 to the vegetable chamber air supply passage 18 or in the reverse direction, excessive cooling and defective cooling of the vegetable chamber 7 are avoided and the vegetable chamber 7 can be kept at a proper temperature.

Description

  The present invention relates to a refrigerator that cools and stores food and the like in a storage room, and more particularly, to a refrigerator that has a supply air passage that supplies air cooled by a cooler to a vegetable room.

  Conventionally, a so-called mid-freezer type refrigerator has been known in which a refrigeration room is placed in the upper stage, a freezer room in the middle stage, a vegetable room in the lower stage, and a cooling room that houses a cooler in the back of the freezer room in the middle stage. ing. In this type of refrigerator, a vegetable room supply air passage for supplying air cooled by a cooler to the vegetable room may be formed at the back of the freezer room (for example, Patent Document 1 and Patent Document 2).

  The refrigerator disclosed in Patent Document 1 communicates a refrigerator compartment located at the uppermost stage of the refrigerator and a vegetable compartment located at the lowermost stage, and supplies the vegetable room supply air passage that leads the cold air passing through the refrigerator compartment to the vegetable compartment. (In the same document, it is described as a vegetable room air duct). On the back of the freezer compartment, a cooling chamber (in the same document, a cold air duct) that houses a cooler is formed by a partition (in the same document, an eve cover) and an inner box. The vegetable room supply air passage (vegetable room air duct) of the same document is formed in the back of the freezer room, and is provided adjacent to the cooling room (cold air air duct).

  Moreover, the refrigerator disclosed in Patent Document 2 has a vegetable room supply air passage (in the same document, a cold air passage) that supplies air cooled by the cooler directly to the vegetable room without passing through the refrigerator compartment. . The vegetable room supply air passage (cold air passage) of the same document includes a partition body (in the same document, a back member) that forms a cooling chamber, and a partition body that forms a freezer compartment supply air passage in front of the cooling chamber (in the same document). , A cover member). Specifically, a concave portion extending in the vertical direction is formed in the partition body (back surface member) forming the cooling chamber, and the concave portion is covered with a front cover (cover member) so that the vegetable room supply air passage (cold air passage) is formed. Forming.

  Moreover, the refrigerator disclosed by the same literature is provided with the damper apparatus which controls the cold air sent to a refrigerator compartment and a vegetable compartment. The damper device is disposed in a rear projection plane of the freezer compartment, and is incorporated in a partition body (back member) that forms the cooling chamber.

JP 2011-52907 A (page 7-7, FIG. 2) JP 2008-57902 A (page 6-9, FIG. 7)

  However, in the refrigerator of the prior art, it is difficult to ensure the airtightness of the vegetable room supply air path, and as a result, there is a problem that proper temperature management of the vegetable room is hindered.

  Specifically, when the cooling chamber and the vegetable compartment are formed simultaneously between the integrally formed partition and the inner box, the vegetable room supply air may be reduced due to a dimensional error of the partition or deformation of the inner box due to urethane foam. A gap was likely to occur in the seal portion (the contact portion between the partition and the inner box) that divides the path and the cooling chamber.

  As a result, for example, when the temperature of the vegetable room is lowered to a predetermined target value and the supply of cold air to the vegetable room is stopped, the cold air is supplied from the cooling room to the vegetable room supply air passage through the gap described above. Leaked and the vegetable room was too cold.

  On the other hand, when the vegetable compartment is being cooled, the cooling chamber becomes negative pressure due to the operation of the blower, and the pressure of the vegetable compartment supply air passage becomes higher than the pressure of the cooling compartment. Cold air is sucked into the cooling chamber through the vegetable compartment, which may cause poor cooling of the vegetable chamber.

  In addition, as in the refrigerator disclosed in Patent Document 2, the freezing supply air passage and the vegetable compartment supply air passage are formed simultaneously by the integrally formed partition and the integrally formed front cover. It was difficult to ensure airtightness between the supply air path for vegetables and the supply room for vegetable compartment. That is, since it was difficult to screw the seal portion (the contact portion between the partition body and the front cover) that partitions the supply air path for freezing and the vegetable room supply air path, A gap was easily formed between the cover and the cover.

  If there is a gap in the seal between the freezer supply airway and the vegetable room supply airway, low temperature air leaks from the freezer room supply airway to the vegetable room supply airway when the vegetable room is not cooled. The vegetable room gets too cold.

  The present invention has been made in view of the above circumstances, and provides a refrigerator capable of maintaining the temperature of a vegetable room appropriately while improving the airtightness of the vegetable room supply air passage while maintaining excellent assemblability. The purpose is to do.

  The refrigerator according to the present invention is partitioned by a heat insulating partition wall into at least an upper refrigerator compartment, an intermediate freezer compartment, and a lower vegetable compartment, and a cooling compartment that is partitioned by a partition and formed at the back of the freezer compartment. Chamber, a cooler disposed in the cooling chamber, for cooling air supplied to the storage chamber, and a front cover attached in front of the partition, and the air cooled by the cooler. A freezer compartment supply air passage for flowing, and a vegetable compartment supply air passage for supplying the air to the vegetable compartment via the back of the freezer compartment, the vegetable compartment supply formed at the back of the freezer compartment The air path is formed in a space defined by a vegetable room air path cover provided separately from the partition and the front cover.

  According to the refrigerator of the present invention, the vegetable room supply air path is partitioned by the vegetable room air path cover that is provided independently of the partition that partitions the cooling chamber and the front cover that partitions the freezer compartment supply air path. Formed in space.

  Therefore, it is possible to eliminate the seal portion that directly partitions the cooling chamber or freezer compartment supply air passage and the vegetable compartment supply air passage. That is, the seal member attached to the partition or the front cover that divides the cooling chamber or freezer compartment supply air passage seals between the cooling chamber or freezer compartment supply air passage and the freezer compartment, and is attached to the vegetable compartment supply air passage. The sealing member to be sealed seals between the vegetable room supply air passage and the freezing room.

  Thereby, it can prevent that cool air leaks from a cooling room or a freezer compartment supply air path to a vegetable room supply air path. Moreover, when the cooling chamber becomes negative pressure, it is possible to prevent cold air in the vegetable chamber supply air passage from being sucked into the cooling chamber. As a result, it is possible to avoid overcooling and poor cooling of the vegetable room and maintain the vegetable room at an appropriate temperature.

  In addition, the vegetable room air channel cover is provided as a separate part, so that the assemblability is improved, and the partition that forms the cooling chamber and freezer room supply air channel and the seal portion of the front cover are fixed to the inner box by screws or the like. Will be able to. As a result, it is possible to prevent air leakage from the cooling chamber or freezer supply air path to the freezer or vice versa.

  In addition, by providing a cylindrical heat insulating member that forms the vegetable room supply air path inside the vegetable room air path cover, the assemblability of the vegetable room supply air path is improved and the airtightness of the vegetable room supply air path is improved. Can be further increased. Furthermore, heat transfer between the vegetable room supply air passage and the outside thereof can be reduced, and heat loss can be reduced.

  Moreover, you may form the vegetable compartment supply air path so that it may pass through the inside of the heat insulation partition wall which each forms the upper surface and bottom face of a freezer compartment. Thereby, a vegetable room supply air path can be easily assembled in the back of a freezer compartment as parts which extend the vegetable room air path cover and the said heat insulation member linearly to an up-down direction.

  Moreover, you may comprise so that the vegetable room airway cover or the upper and lower end surfaces of the said heat insulation member may each be couple | bonded with the said heat insulation partition wall via a sealing member. Thereby, an assembly operation can be easily performed and the airtightness which was excellent in the vegetable compartment supply duct can be ensured.

  In addition, a damper device that can independently control the amount of air flowing through the refrigerator compartment and the vegetable compartment with a single drive motor may be provided to supply cold air that does not pass through the refrigerator compartment to the vegetable compartment. Thereby, cooling of a vegetable compartment can be performed independently of cooling of a refrigerator compartment, and the temperature of a vegetable compartment can be controlled appropriately.

  Moreover, you may arrange | position the said damper apparatus in the back of the heat insulation partition wall which forms the upper surface of a freezer compartment. Thus, the vegetable room air channel cover or the heat insulating member extending linearly is adopted, and the vegetable room supply air channel is provided at the back of the freezing room by sealing the upper and lower end surfaces and joining to the heat insulating partition wall. It can be formed easily.

  Moreover, you may arrange | position the said damper apparatus so that the uppermost part may become lower than the bottom face of a refrigerator compartment. Thereby, in the state which closed the refrigerator compartment damper, it can prevent that the air in a refrigerator compartment is cooled with the air in a supply air path, and dew condensation arises in a refrigerator compartment.

  Also, a return air passage for flowing air from the refrigerator compartment to the cooling chamber may be provided, and the return air passage may be formed by an inner wall of the heat insulating box (inner box) and a heat insulating member that forms the vegetable room supply air passage. good. Thereby, a return air path with high airtightness and heat insulation can be formed, and the vegetable room supply air path and the freezing room can be prevented from being warmed by the air flowing through the return air path.

It is a front external view of the refrigerator which concerns on embodiment of this invention. It is side surface sectional drawing which shows schematic structure of the refrigerator which concerns on embodiment of this invention. It is a front schematic diagram which shows the supply air path of the refrigerator which concerns on embodiment of this invention. It is an AA line sectional view explaining a supply air course behind the freezer compartment of a refrigerator concerning an embodiment of the present invention. It is a disassembled perspective view explaining the structure of the supply air path of the refrigerator which concerns on embodiment of this invention. It is a cross-sectional view which shows the heat insulation member which forms the vegetable compartment supply air path of the refrigerator which concerns on embodiment of this invention. It is a perspective view of the heat insulation partition wall above the freezer compartment which shows attachment of the (A) damper device of the refrigerator concerning the embodiment of the present invention, and (B) attachment of the upper partition member.

  Hereinafter, the refrigerator which concerns on embodiment of this invention is demonstrated in detail based on drawing.

  FIG. 1 is a front external view showing a schematic structure of the refrigerator 1 according to the present embodiment. FIG. 2 is a right side sectional view of the refrigerator 1. FIG. 3 is a schematic front view showing an outline of the supply air path of the refrigerator 1. 2 and 3, the flow of cold air supplied to the storage chambers 3 to 7 is indicated by solid arrows, and the flow of air returning from the storage chambers 3 to 7 to the cooling chamber 13 is indicated by broken line arrows. .

  As shown in FIG. 1, the refrigerator 1 includes a heat insulating box 2 as a main body, and forms a storage room for storing food and the like inside the heat insulating box 2. The interior of the storage room is divided into a plurality of storage rooms 3 to 7 according to storage temperature and usage. The uppermost stage is the refrigerator compartment 3, the lower left side is the ice making room 4, the right side is the upper freezer room 5, the lower stage is the lower stage freezer room 6, and the lowermost stage is the vegetable room 7. The ice making chamber 4, the upper freezing chamber 5, and the lower freezing chamber 6 are all storage chambers in the freezing temperature range, and these are collectively referred to as freezing chambers 4 to 6 as appropriate in the following description.

  The front surface of the heat insulation box 2 is opened, and heat insulation doors 8 to 12 are provided in the opening portions corresponding to the storage chambers 3 to 7 so as to be freely opened and closed. The refrigerator compartment doors 8a and 8b divide and block the front surface of the refrigerator compartment 3, and the left upper and lower parts of the refrigerator compartment door 8a and the upper right lower part of the refrigerator compartment door 8b are rotatably supported by the heat insulating box 2. Moreover, the heat insulation doors 9-12 are supported by the heat insulation box 2 so that it can be pulled out to the front of the refrigerator 2.

  As shown in FIG. 2, the heat insulation box 2 which is the main body of the refrigerator 2 is disposed with a steel plate outer box 2a having an opening on the front surface and a gap inside the outer box 2a. And an inner box 2b made of synthetic resin having an opening and a heat insulating material 2c made of polyurethane foam filled and foamed in a gap between the outer box 2a and the inner box 2b. Each of the heat insulating doors 8 to 12 adopts the same heat insulating structure as that of the heat insulating box 2.

  The refrigerating room 3 and the freezing rooms 4 to 6 located in the lower stage are partitioned by a heat insulating partition wall 35. The heat insulating partition wall 35 is a molded product of synthetic resin, and the inside thereof is filled with a heat insulating material.

  Further, the ice making chamber 4 and the upper freezing chamber 5 inside the freezing chambers 4 to 6 are partitioned by a partition wall (not shown in the drawing). The ice making chamber 4 and the upper freezing chamber 5 and the lower freezing chamber 6 provided in the lower stage communicate with each other so that cold air can flow freely. The freezer compartments 4 to 6 and the vegetable compartment 7 are separated by a heat insulating partition wall 36.

  In addition, on the back side of the freezer compartments 4 to 6, a freezer compartment supply air passage 14 is defined by a front cover 24 that is a partition member made of synthetic resin. Specifically, the supply air passage 14 for refrigeration is a space formed between the partition body 25 and the front cover 24 assembled in front of the partition body 25, and serves as an air passage through which cool air cooled by the cooler 33 flows. .

  The front cover 24 is formed with an air outlet 15 that is an opening for blowing cool air into the freezer compartments 4 to 6. In addition, a return port 20 for returning air from the freezer compartments 4 to 6 to the cooling chamber 13 is formed in the lower back surface of the lower freezer compartment 6.

  Further, a refrigeration chamber supply air passage 16 for supplying cold air to the refrigeration chamber 3 is formed on the back surface of the refrigeration chamber 3. In the refrigerator compartment supply air passage 16, an air outlet 17 through which cold air flows to the refrigerator compartment 3 is formed. The freezer compartment supply air passage 14 and the refrigerator compartment supply air passage 16 communicate with each other via a refrigerator compartment damper 34a of a damper device 34 (air passage switch). The refrigerator compartment damper 34a is for controlling the flow rate of the cold air supplied to the refrigerator compartment 3, and maintaining the temperature inside the refrigerator compartment 3 appropriately.

  On the further back side of the freezing chamber supply air passage 14 inside the inner box 2b, there is provided a cooling chamber 13 that is divided and formed by a partition 25. That is, the cooling chamber 13 is a space formed by being sandwiched between the inner box 2 b and the partition body 25. The partition 25 at the top of the cooling chamber 13 is formed with an opening 13a that connects the cooling chamber 13 and the freezing chamber supply air passage 14. The opening 13a is used to supply cold air to the storage chambers 3 to 7. A blower 32 is provided. On the other hand, below the cooling chamber 13, an opening 13 b is formed for sucking the return cold air from the storage chamber into the cooling chamber 13.

  A cooler 33 (evaporator) for cooling the circulating air is disposed inside the cooling chamber 13. The cooler 33 is connected to the compressor 31, a radiator (not shown), and an expansion valve (capillary tube) (not shown) via a refrigerant pipe, and constitutes a vapor compression refrigeration cycle circuit. It is. In the refrigerator 1 according to this embodiment, isobutane (R600a) is used as the refrigerant of the refrigeration cycle.

  As shown in FIG. 3, the refrigerator 1 includes a return air passage 21 that allows air to flow from the refrigerator compartment 3 to the cooling compartment 13 (see FIG. 2). A return port 22 that is an opening connected to the return air passage 21 is formed in the lower part of the refrigerator compartment 3. The air in the refrigerator compartment 3 flows to the return air passage 21 through the return port 22 and flows downward of the cooler 33.

  In addition, a vegetable room supply air path 18 for flowing the air cooled by the cooler 33 to the vegetable room 7 is formed in front of the return air path 21. The vegetable room supply air passage 18 branches upward from the freezer compartment supply air passage 14, changes its direction downward through the inside of the heat insulating partition wall 35 above the freezer compartments 4-6, and the freezer compartments 4-6. Passing through the back of. And it penetrates the heat insulation partition wall 36 and is connected to the vegetable compartment 7. The vegetable compartment 7 is formed with an air outlet 19 that is an opening for blowing cold air from the vegetable compartment supply air passage 18.

  The vegetable room supply air passage 18 on the back side of the heat insulating partition wall 35 is provided with a vegetable room damper 34b for controlling the flow of cold air supplied to the vegetable room. Thereby, the vegetable compartment 7 can be cooled independently of the cooling of the refrigerator compartment 3, and the temperature of the vegetable compartment 7 can be controlled appropriately.

  Moreover, the return opening 29 is formed in the vegetable compartment 7, and the air in the vegetable compartment 7 passes through the return passage 29 through the vegetable compartment return air passage 23 (see FIG. 2) and the opening 13b (see FIG. 2). Then, it flows to the lower part of the cooling chamber 13.

  FIG. 4 is a cross-sectional view illustrating the supply air path behind the freezer compartments 4 to 6 of the refrigerator 1, and represents a cross section taken along line AA in FIG.

  As shown in FIG. 4, the cooling chamber 13 is partitioned by a partition 25 assembled to the inner box 2 b, and a cooler 33 is disposed in the cooling chamber 13. Moreover, the freezer compartment supply air path 14 is partitioned and formed by the partition 25 and the front cover 24 attached to the front thereof.

  Both the side edge portions 24b and 25b (seal portions) of the partition body 25 and the front cover 24 are fixed to the inner box 2b by, for example, screws or the like via a seal member (not shown). Thereby, the airtightness of the cooling chamber 13 and the freezer compartment supply air path 14 can be improved.

  A vegetable room air passage cover 26 is attached to the inner box 2b on the right side of the cooling chamber 13 and the freezer compartment supply air passage 14 on the back side of the freezer compartments 4-6. And the space partitioned by the vegetable compartment air duct cover 26, that is, the space sandwiched between the vegetable compartment air duct cover 26 and the inner box 2b, is assembled into a substantially cylindrical shape forming the vegetable compartment supply air passage 18. Insulating members 27 and 28 are provided.

  Here, in the refrigerator of a prior art, forming the vegetable room supply air path with the partition plate and the front cover was performed. That is, the parts corresponding to the partition body 25 and the vegetable room air passage cover 26 of the present invention are formed as a single part, and a vegetable room supply air passage may be formed beside the cooling room. It is also conceivable to form a vegetable room supply air path beside the freezing room cooling air path as one part in which parts corresponding to the front cover 24 and the vegetable room air path cover 26 of the present invention are integrally formed. .

  In such a configuration of the prior art, a portion for directly partitioning and sealing the cooling chamber or freezer compartment supply air passage and the vegetable compartment supply air passage is necessary. Specifically, a seal member made of a foamed rubber material or the like, with a partition body and an inner box or a front cover and a partition body at a portion that divides the cooling chamber or freezer compartment supply air passage and the vegetable compartment supply air passage. Was in contact with each other. However, due to the processing dimension error of each part, deformation due to urethane foam, and difficulty in screwing the partition and the front cover, gaps are likely to occur in the seal part, causing cold air to leak. .

  In contrast, in the present invention, as described above, the vegetable room supply air passage 18 is provided separately from the partition 25 and the front cover 24 that form the cooling chamber 13 and the freezer compartment supply air passage 14. A space defined by the air passage cover 26 is formed. Thereby, the seal | sticker part which partitions off directly between the cooling chamber 13 or the freezer compartment supply air path 14, and the vegetable compartment supply air path 18 can be eliminated. That is, the seal member attached to the partition 25 or the front cover 24 that partitions the cooling chamber 13 or the freezer compartment supply air passage 14 seals between the cooling chamber 13 or the freezer compartment supply air passage 14 and the freezer compartments 4 to 6. It is the structure to do.

  Thereby, it is possible to prevent cold air from leaking from the cooling chamber 13 or the freezer compartment supply air passage 14 to the vegetable compartment supply air passage 18. Moreover, when the cooling chamber 13 becomes negative pressure, it is possible to prevent the cold air in the vegetable chamber supply air passage 18 from being sucked into the cooling chamber 13. As a result, the vegetable room 7 (see FIG. 2) can be prevented from being overcooled and poorly cooled, and quality deterioration of food stored in the vegetable room 7 can be prevented.

Further, a return air path 21 is formed in the vegetable room supply air path 18 by the heat insulating member 28 and the inner box 2b. A sealing member 41 made of, for example, a foamed rubber material or the like is interposed between the heat insulating member 28 and the inner box 2b to ensure airtightness. Thus, by forming the return air path 21 with the heat insulating member 28, airtightness and heat insulation can be ensured, and the vegetable room supply air path 18 and the freezer compartment 4 to the air flowing in the return air path 21. 6 can be prevented from being warmed.

  FIG. 5 is an exploded perspective view illustrating the configuration of the supply air path of the refrigerator 1. In FIG. 5, for the sake of explanation, the refrigerator 1 is represented as a partially broken view in which the refrigerator 1 is broken near the upper surface of the freezer compartments 4 to 6 in the vicinity of the rear surface and broken on an appropriate curved surface in the front. Below the fracture surface near the back surface, there are a cooling chamber 13 (see FIG. 4) and a freezing chamber supply air passage 14 (see FIG. 4) that do not appear in this figure.

  As indicated by reference numeral (I) in FIG. 5, the vegetable room airway cover 26 is a part made of synthetic resin that extends in a straight line with a substantially U-shaped cross section. Inside the vegetable room airway cover 26, a heat insulating member 27 and a heat insulating member 28 made of, for example, a resin material such as polystyrene and having a predetermined cross-sectional shape and extending linearly are disposed. The heat insulating member 27 and the heat insulating member 28 are combined with each other to form a substantially cylindrical shape as shown in FIG.

  Thus, by providing the substantially cylindrical heat insulating members 27 and 28 forming the vegetable room supply air passage 18 inside the vegetable room air passage cover 26, the assemblability of the vegetable room supply air passage 18 is improved. Further, the airtightness of the vegetable room supply air passage 18 can be further improved. Furthermore, heat transfer between the vegetable room supply air passage 18 and the outside thereof can be reduced, and heat loss can be reduced.

  Then, sealing members 40 made of, for example, foam rubber material or the like are attached to the upper and lower end surfaces of the heat insulating members 27 and 28 assembled in a substantially cylindrical shape, and as shown in FIG. Assembled into. The upper and lower end surfaces of the heat insulating members 27 and 28 are coupled to the heat insulating partition wall 35 (see FIG. 2) and the heat insulating partition wall 36 through the seal member 40, respectively. The sealing member 40 attached here seals between the vegetable room supply air path 18 and the freezing rooms 4-6.

  Thus, in the refrigerator 1, since it is the structure which seals only the upper and lower end surfaces of the heat insulation members 27 and 28 which form the vegetable compartment supply air path 18, it is easy to assemble and can exhibit excellent airtightness. it can.

  Moreover, in the refrigerator 1, the structure which attaches the vegetable compartment airflow path cover 26 after attaching the partition 25 and the front cover 24 is employ | adopted. As a result, the assembling property is improved, and as described above, the right seal portions 24b and 25b of the partition 25 and the front cover 24 can be fixed to the inner box 2b by screws or the like. As a result, it is possible to prevent air leakage from the cooling chamber 13 or the freezing chamber supply air passage 14 to the freezing chambers 4 to 6 or in the opposite direction.

  In addition, the vegetable compartment air passage cover 26 is formed with locking portions 26 a and 26 b for fixing the vegetable compartment air passage cover 26. The locking portion 26a engages with a locking receiving portion 24a formed on the front cover, and the locking portion 26b engages with an engagement receiving portion (not shown) formed on the inner box 2b. Thereby, the vegetable room airway cover 26 can be attached easily, and assembly workability | operativity improves. In addition, you may employ | adopt the method of fixing the vegetable room air path cover 26 by screwing etc. FIG.

  FIG. 6 is a cross-sectional view showing the heat insulating members 27 and 28 forming the vegetable room supply air passage 18. As shown by reference numeral (I) in FIG. 6, the heat insulating member 27 and the heat insulating member 28 are formed with a convex portion 27 a and a concave portion 28 a that are fitted when both parts are combined. Specifically, the heat insulating member 27 is formed with a convex portion 27 a that is a fitting portion, and the heat insulating member 28 is formed with a concave portion 28 b. As a result, as shown in FIG. 11 (II), when the heat insulating members 27 and 28 are assembled, the convex portions 27a and the concave portions 28a are fitted together to ensure excellent holding force and sealing performance. Can do. As a result, as described above, by sealing only the upper and lower end surfaces of the heat insulating members 27 and 28 with the sealing member 40 (see FIG. 5), the vegetable room supply air passage 18 having excellent airtightness can be easily formed. .

  Here, you may form the width dimension of the convex part 27a slightly larger than the width dimension of the recessed part 28b. Thereby, since the convex part 27a and the recessed part 28a are fitted with a slight tightening margin, the holding force and the sealing performance of the fitting part can be further enhanced.

  In addition, various other forms can act as a fitting part (the convex part 27a, the recessed part 28a) mentioned above. By forming irregularities having shapes (for example, wave shapes or the like) corresponding to the bonding surfaces of the heat insulating members 27 and 28, the bonding area can be increased and the sealing performance of the portions can be improved. Moreover, the said junction part may be joined using an adhesive agent and you may provide a sealing member in the said junction part.

  Furthermore, instead of the configuration in which the heat insulating member 27 and the heat insulating member 28 are combined, a substantially cylindrical heat insulating member integrally formed may be employed. Thereby, the assembly property and airtightness of the vegetable room supply air path 18 can further be improved.

  The heat insulation thickness t1 of the heat insulation member 28 (distance between the vegetable room supply air passage 18 and the outer surface of the heat insulation member 28) is the heat insulation thickness t2 of the heat insulation member 27 (the vegetable room supply air passage 18 and the outer surface of the heat insulation member 27). And the distance). Thereby, the heat insulation performance between the vegetable compartment supply air path 18 and the return air path 21 where a temperature difference becomes large can be improved. As a result, insufficient cooling of the vegetable compartment 7 (see FIG. 2) due to the air in the vegetable compartment supply air passage 18 being warmed by the return air flowing through the return air passage 21 can be prevented.

  FIG. 7 (A) is a perspective view of the lower partition member 38 of the heat insulating partition wall 35 disposed above the freezer compartments 4 to 6 for explaining the assembly of the damper device 34 of the refrigerator 1. It is a perspective view of the heat insulation partition wall 35 which shows the state which attached the upper partition member 37. FIG.

  As shown in FIG. 7A, a heat insulating structure 39 made of polystyrene or the like is attached to a synthetic resin lower partition member 38 constituting the heat insulating partition wall 35. In the heat insulating structure 39, openings serving as the freezer compartment supply air passage 16, the vegetable compartment supply air passage 18, and the return air passage 21 are formed. Further, the heat insulating structure 39 is formed with a concave groove 39a that forms the vegetable room supply air passage 18.

  In addition, a damper device 34 is assembled to the heat insulating structure 39. As described above, the damper device 34 includes the refrigerator compartment damper 34a that controls the amount of air that flows to the refrigerator compartment 3 (see FIG. 2) and the vegetable compartment damper 34b that controls the amount of air that flows to the vegetable compartment 7 (see FIG. 2). Are independently controllable by one drive motor 34c.

  Then, as shown in FIG. 7B, the upper partition member 37 made of synthetic resin is attached to the lower partition member 38 to which the heat insulating structure 39 and the damper device 34 are attached, and the heat insulating partition wall 35 is formed. In addition, the upper partition member 37 and the heat insulation partition wall 35 are not limited to the structure shown in figure, The upper part of the vegetable room supply air path 18 is shielded by some partition members, and the refrigerator compartment supply air path 16 and the return air path Only 21 needs to open upward.

  Thereby, the vegetable compartment supply air path 18 flows upward from the upper surface (lower partition member 38) of the freezer compartments 4 to 6 (see FIG. 2), and faces downward through the air path inside the heat insulating partition wall 35. After changing, is formed so as to flow through the air passage formed in the back of the freezer compartments 4 to 6 and to the vegetable compartment 7. Further, the damper device 34 is disposed in the back of the heat insulating partition wall 35.

  By adopting such a configuration, as shown in FIG. 5, the vegetable compartment air passage cover 26 and the heat insulating members 27 and 28 can be made to extend linearly, and the vegetable compartment air passage cover 26 and Processing of the heat insulating members 27 and 28 is facilitated. Moreover, the vegetable room supply air path 18 can be easily assembled in the back of the freezer compartments 4-6.

  Moreover, as shown to FIG. 7 (A) and (B), as for the vegetable room supply air path 18, the uppermost part becomes below the bottom face (upper partition member 37) of the refrigerator compartment 3 (refer FIG. 2), and vegetable It is formed so that the cold air that has passed through the room damper 34 b flows to the vegetable room 7 (see FIG. 2) without passing through the refrigerating room 3. Thereby, the heat loss of the cold air supplied to the vegetable compartment 7 can be reduced, and the temperature of the vegetable compartment 7 can be controlled efficiently and appropriately.

  Further, the damper device 34 is disposed such that the uppermost portion is below the bottom surface (upper partition member 37) of the refrigerator compartment 3. Thereby, in the state which closed the refrigerator compartment damper 34a, it can prevent that the air in the refrigerator compartment 3 is cooled by the air under the refrigerator compartment damper 34a, and dew condensation arises in the refrigerator compartment 3.

  As mentioned above, although the refrigerator which concerns on embodiment of this invention was demonstrated, this invention is not limited to this, A various change is possible in the range which does not deviate from the summary of this invention.

DESCRIPTION OF SYMBOLS 1 Refrigerator 2 Heat insulation box 2b Inner box 3 Refrigeration room 4 Ice making room (freezer room)
5 Upper freezer room (freezer room)
6 Lower freezer compartment (freezer compartment)
7 Vegetable room 13 Cooling room 14 Supply air passage (freezer compartment supply air passage)
16 Supply air passage (refrigeration room supply air passage)
18 Supply air channel (vegetable room supply air channel)
DESCRIPTION OF SYMBOLS 21 Return air path 24 Front cover 25 Partition 26 Vegetable room air path cover 27 Heat insulation member 28 Heat insulation member 35 Heat insulation partition wall 36 Heat insulation partition wall 32 Blower 33 Cooler 34 Damper device 34c Drive motor 40 Seal member

Claims (5)

A storage room partitioned into at least an upper refrigerator compartment, a middle freezer compartment, and a lower vegetable compartment by an insulating partition;
A cooling chamber partitioned by a partition and formed at the back of the freezing chamber;
A cooler disposed in the cooling chamber and configured to cool air supplied to the storage chamber;
A freezer compartment supply air passage that is formed by attaching a front cover in front of the partition and that flows the air cooled by the cooler;
A vegetable room supply air passage for supplying the air to the vegetable room via the back of the freezer,
The vegetable room supply air passage formed at the back of the freezer compartment is formed in a space defined by a vegetable room air passage cover provided separately from the partition and the front cover.   The refrigerator according to claim 1, wherein a cylindrical heat insulating member that forms the vegetable room supply air path is provided inside the vegetable room air path cover. The vegetable room supply air passage is formed so as to pass through the inside of the heat insulating partition wall forming the upper surface and the bottom surface of the freezing room,
3. The refrigerator according to claim 2, wherein at least one of the vegetable room air channel cover and the heat insulating member is coupled to the heat insulating partition wall through upper and lower end surfaces through a sealing member. A damper device capable of independently controlling the amount of the air flowing through the refrigerator compartment and the vegetable compartment with a single drive motor,
The damper device is disposed at the back of the heat insulating partition wall forming the upper surface of the freezer compartment so that the uppermost portion is below the bottom surface of the refrigerator compartment,
The refrigerator according to claim 3, wherein the vegetable room supply air passage does not pass through the refrigerator compartment. A return air passage for flowing air from the refrigerator compartment to the cooling compartment,
The refrigerator according to claim 4, wherein the return air passage is formed by being surrounded by an inner wall of a heat insulating box that forms the storage chamber and the heat insulating member that forms the vegetable compartment air passage.

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