JP2018100798A - refrigerator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a refrigerator that has a freezing chamber in an upper portion and a cold storage chamber in a lower portion and that has an eaves member above a return air duct from the cold storage chamber to prevent frosting in the return air duct and has an increased inner capacity of the freezing chamber.SOLUTION: A refrigerator according to the present invention has eaves members 44 arranged between exits 41A, 41B of a return air duct 41 from a freezing chamber 12 and exits 21A, 21B of a return air duct 21 from a cold storage chamber. The eaves members 44 covers parts above the exits 21A, 21B of the return air duct 21, and a lateral width L2 of the eaves members 44 is greater than a lateral width L3 of the exits 21A, 21B of the return air duct 21. This structure can prevent cold air from flowing into the return air duct 21 when cooling operation is stopped, prevent frosting in the return air duct, and enables reduction in the thickness of a heat insulation partition wall 19, thereby increasing the inner capacity of the freezing chamber 12.SELECTED DRAWING: Figure 3

Description

  The present invention relates to, for example, a refrigerator having a freezer compartment in the upper stage and a refrigeration room in the lower stage, and in particular, a saddle member is provided above the return air passage from the refrigerating compartment, and frost formation in the return air passage It is related with the refrigerator which increases the internal volume of a freezer compartment.

  The following structure is known as a conventional refrigerator. 6A is a side cross-sectional view illustrating the overall appearance of the refrigerator 100, and FIG. 6B is an enlarged cross-sectional view illustrating the vicinity of the cooling chamber 108 of the refrigerator 100 illustrated in FIG. 6A. Is shown.

  As shown in FIG. 6A, the refrigerator 100 includes a heat insulating box 101 as a main body, and a storage room for storing food and the like is formed inside the heat insulating box 101. As the storage room, specifically, a refrigerator compartment 102, a freezer compartment 103, and a vegetable compartment 104 are formed from the upper stage. The refrigerator compartment 102 and the freezer compartment 103 are partitioned by a heat insulating partition wall 105, and the freezer compartment 103 and the vegetable compartment 104 are partitioned by a heat insulating partition wall 106.

  As shown in FIG. 6B, a cooling chamber 108 partitioned by a partition member 107 made of a synthetic resin plate or the like is formed behind the freezing chamber 103, and a cooler 109 is disposed in the cooling chamber 108. ing. A defrost heater (not shown) is disposed below the cooler 109. A return air passage 110 is formed in the heat insulating partition wall 106 to return cool air from the vegetable compartment 104 to the cooling compartment 108. Similarly, the cold air flowing through the freezing chamber 103 returns to the cooling chamber 108 via a return port 111 provided in the vicinity of the lower end portion of the partition member 107 (see, for example, Patent Document 1).

Japanese Patent No. 3276927

  In the refrigerator 100 described above, when the cooling operation is turned off, the fan 112 disposed on the upper side of the cooling chamber 108 stops, and the cool air cooled by the cooler 109 in the cooling chamber 108 moves downward to the cooling chamber 108. And come down. Then, as indicated by an arrow 113, a part of the cold air that has come down flows into the return air passage 110 from the vegetable compartment 104, whereby the inside of the return air passage 110 is cooled, and frost is formed on the side wall. If the frost grows thick, the return air passage 110 may be blocked, resulting in poor cooling.

  In particular, since the cool air from the vegetable compartment 104 flows in the return air passage 110, the amount of water contained in the cool air is large, and the inside of the return air passage 110 is cooled by the cold air that has come down, and frost is formed on the side wall. There is a problem that it is easy to adhere.

  On the other hand, during the defrosting operation, the defrosting heater is operated and the compressor 114 and the like are stopped, so that the frost attached to the cooler 109 is melted, and the defrosting water to be dropped drops the partition member 107 and the heat insulating partition wall 106. It also travels in the return air passage 110 and around its exit. Then, a part of the defrost water stays in the return air passage 110 and the vicinity of the exit as water droplets and freezes by the cold air that has come down, so that the aluminum sheet and the aluminum tape bonded in the return air passage 110 are There is a problem of peeling.

  Moreover, in order to increase the internal volume of the freezer compartment 103, it is possible to make the heat insulation partition wall 106 thin. However, when the heat insulating partition wall 106 is thinned, the thickness of the heat insulating material between the freezer compartment 103 and the return air passage 110 is insufficient, and the inside of the return air passage 110 is easily cooled. Since the inside becomes a cause of frost formation, there is a problem that it is difficult to increase the internal volume of the freezer compartment 103. Similarly, in order to prevent the defrost water generated during the defrosting operation from flowing into the return air passage 110, an aluminum sheet is bonded to the return air passage 110, and the return air passage is interposed via the aluminum sheet. Since the inside of 110 is easily cooled, there is a problem that it is difficult to make the heat insulating partition wall 106 thin, and it is difficult to increase the internal volume of the freezer compartment 103.

  The present invention has been made in view of the above circumstances, and by providing a saddle member so as to cover the upper exit of the return air passage from the refrigerator compartment, the inside of the return air passage is hardly frosted, An object of the present invention is to provide a refrigerator in which the heat insulating partition wall is thinned and the internal volume of the freezer compartment is increased.

  In the refrigerator of the present invention, the storage chamber formed inside the heat insulating box, the cooling chamber in which the cooler for cooling the air supplied to the storage chamber is disposed, and the cooling chamber cooled A return air passage through which air circulates in the storage chamber and returns from the storage chamber to the cooling chamber, the return air passage from at least the freezer compartment constituting the storage chamber to the cooling chamber A first return air passage that returns, and a second return air passage that returns from one of the refrigeration room or the vegetable room constituting the storage room to the cooling room, and the first return air path Is disposed above a heat insulating partition wall of the heat insulating box between the freezer room and the refrigerator room or the vegetable room, and the outlet of the first return air passage to the cooling room is the heat insulating member. The second return air passage is disposed above the partition wall, and the second return air passage is disposed in the heat insulating partition wall. An outlet of the return air passage to the cooling chamber is disposed on a side surface of the heat insulating partition wall, and the heat insulation is provided between the outlet of the first return air passage and the outlet of the second return air passage. A eaves member extending from the side surface of the partition wall to the cooling chamber side is disposed, and the eaves member covers an upper part of the outlet of the second return air passage, and the second return air passage It is characterized by being arranged wider than the lateral width of the outlet.

  Further, in the refrigerator of the present invention, a defrost heater and a heater cover above the defrost heater are disposed below the cooler of the cooling chamber, and an outlet of the first return air passage is provided. The separation distance from the heater cover is wider than the separation distance between the flange member and the defrosting heater.

  In the refrigerator of the present invention, the saddle member is formed by bending a metal plate-like body into a substantially S shape, and one end side of the saddle member is fixed in the first return air passage. The other end side of the flange member is disposed in the cooling chamber.

  In the refrigerator of the present invention, the first return air passage is formed along an upper surface of the heat insulating partition wall, and the flange member is attached along the side surface from the upper surface of the heat insulating partition wall. It is characterized by.

  In the refrigerator of the present invention, the metal plate-like body is an aluminum sheet.

  The refrigerator of the present invention has a first return air passage from the freezer compartment and at least a second return air passage from the refrigerator compartment or the vegetable compartment, and the first and second return air passages are cooled. By communicating with the chamber, the air cooled in the cooling chamber circulates in the refrigerator. In the cooling chamber, a saddle member is disposed between the outlet of the first return air passage and the outlet of the second return air passage, and the saddle member covers the upper side of the outlet of the second return air passage, The lateral width of the eaves member is wider than the lateral width of the outlet of the second return air passage. With this structure, it is possible to prevent the cool air from flowing into the second return air passage when the cooling operation is stopped, to prevent the second return air passage from frosting, and to reduce the thickness of the heat insulating partition wall. Thus, the internal volume of the freezer can be increased.

  In the refrigerator of the present invention, the air flow path above the cooling chamber is set wider than the air flow path below the cooling chamber in the vicinity of the outlet of the first return air passage. With this structure, the cold air from the first return air passage and the cold air from the second return air passage are prevented from colliding in the cooling chamber, and the flow of the cold air in the cooling chamber can be made smooth. it can.

  Moreover, in the refrigerator of this invention, workability | operativity of the attachment operation | work of the saddle member in a cooling chamber is improved by shape | molding a saddle member by bending twice like a substantially S shape.

  Moreover, in the refrigerator of this invention, the inside of a 2nd return air path forms frost, without increasing a material cost by shape | molding the eaves member using the metal material affixed on a heat insulation partition wall. Is prevented.

  Moreover, in the refrigerator of this invention, the one end side of the eaves member is fixed in the 1st return air path, and the other end side of the eaves member is arrange | positioned in the vicinity of the defrost heater. And a collar member becomes a member excellent in heat resistance because it shape | molds from an aluminum sheet.

BRIEF DESCRIPTION OF THE DRAWINGS (A) External appearance perspective view explaining the refrigerator which concerns on embodiment of this invention, (B) It is side sectional drawing. 1 is a schematic front view showing a schematic configuration of an air passage of a refrigerator according to an embodiment of the present invention. It is (A) side sectional drawing explaining the cooling room of the refrigerator which concerns on embodiment of this invention, (B) front sectional drawing. It is the (A) side sectional view explaining the cooling room of the refrigerator concerning the embodiment of the present invention, and (B) side sectional view. BRIEF DESCRIPTION OF THE DRAWINGS (A) Perspective view, (B) Side view, (C) Side surface sectional view explaining the bag member of the refrigerator according to the embodiment of the present invention. (A) Side surface sectional drawing explaining the conventional refrigerator, (B) It is side surface sectional drawing.

  Hereinafter, the refrigerator 10 which concerns on embodiment of this invention is demonstrated in detail based on drawing. In the following description, the vertical direction indicates the height direction of the refrigerator 10, the left-right direction indicates the width direction of the refrigerator 10, and the front-back direction indicates the depth direction of the refrigerator 10.

  FIG. 1A is a perspective view for explaining a schematic structure of the refrigerator 10 according to the embodiment of the present invention, and FIG. 1B illustrates a schematic structure of the refrigerator 10 according to the embodiment of the present invention. It is side surface sectional drawing for doing. FIG. 2 is a schematic front view for explaining a schematic configuration of the air path of the refrigerator 10 according to the embodiment of the present invention.

  As shown in FIG. 1A, the refrigerator 10 includes a heat insulating box 11 as a main body, and a storage room for storing food and the like is formed inside the heat insulating box 11. In addition, as the storage chamber, specifically, a freezer compartment 12 (see FIG. 1B) and a refrigerator compartment 13 (see FIG. 1B) are formed from the upper stage.

  The front surface of each storage chamber of the heat insulation box 11 is opened, and heat insulation doors 14 and 15 are provided in the openings so as to be freely opened and closed. The heat insulating door 14 is, for example, a door that is supported by the heat insulating box 11 so that the upper and lower ends of the right end thereof can rotate freely when viewed from the front, and closes the opening of the freezer compartment 12 from the front. Similarly, the heat insulating door 15 is, for example, a door that is supported by the heat insulating box 11 so that the upper and lower ends of the right end thereof can rotate freely when viewed from the front, and closes the opening of the refrigerator compartment 13 from the front.

  As shown in FIG. 1 (B), a heat insulating box 11 that is a main body of the refrigerator 10 is provided with an outer box 16 made of a steel plate having an opening on the front surface, and a space in the outer box 16. And an inner box 17 made of synthetic resin. A heat insulating material 18 made of polyurethane foam is filled and foamed in the gap between the outer box 16 and the inner box 17. Both the heat insulating doors 14 and 15 that block the freezer compartment 12 and the refrigerator compartment 13 have a heat insulating structure as well as the heat insulating box 11.

  The freezer compartment 12 and the refrigerator compartment 13 located in the lower stage are partitioned by a heat insulating partition wall 19. The heat insulating partition wall 19 also has a heat insulating structure like the heat insulating box 11 described above. A return air passage 21 that connects the refrigerator compartment 13 and the cooling chamber 20 is formed inside the heat insulating partition wall 19.

  A cooling chamber 20 is formed inside the inner box 17 and behind the freezer compartment 12 by a partition member 22 made of a synthetic resin plate or the like. Inside the cooling chamber 20, a cooler 23 that is an evaporator for cooling the air circulating in the refrigerator 10 is disposed.

  The upper part of the partition member 22 is partially opened to form a blower opening 24, and a blower 25, which is an axial blower, for example, is disposed near the rear of the blower opening 24. When the blower 25 blows the cool air in the cooling chamber 20 cooled by the cooler 23, the cool air is supplied to the freezing chamber 12 and the refrigerating chamber 13 via each supply air passage, and the freezing chamber 12 and the refrigerating chamber 13 are supplied. Is maintained at a predetermined internal temperature.

  Specifically, as shown in FIGS. 1B and 2, the arrow indicates the flow of cold air, but in the freezer compartment 12, the plurality of outlets 27 formed in the partition member 26 on the inner side of the interior are provided. Then, the cool air cooled in the cooling chamber 20 is supplied. And the cold air which flowed in the freezer compartment 12 returns to the cooling chamber 20 through the return air path 41 (refer FIG. 3 (A)) from the two return ports 28 formed in the downward direction of the partition member 26. FIG.

  Similarly, in the refrigerator compartment 13, the cold air cooled in the cooling chamber 20 is supplied through a plurality of outlets 30 formed in the partition member 29 on the inner side of the interior. Then, the cold air flowing through the refrigerator compartment 13 returns to the cooling chamber 20 through the return air passage 21 from the return port 31 formed in the heat insulating partition wall 19 that is the top surface of the refrigerator compartment 13.

  The cooler 23 is connected to the compressor 32, a radiator (not shown) and a capillary tube (not shown) or an expansion valve (not shown) via a refrigerant pipe (not shown). This constitutes a vapor compression refrigeration cycle circuit.

  The refrigerator 10 is provided with a control device (not shown), and this control device executes a predetermined arithmetic processing based on an input value from sensors (not shown) such as a temperature sensor, and compresses it. The components such as the machine 32 and the blower 25 are controlled.

  FIG. 3A is a side cross-sectional view for explaining the cooling chamber 20 and its peripheral structure of the refrigerator 10 according to the embodiment of the present invention. FIG. 3B is a front cross-sectional view for explaining the return air passages 21 and 41 connected to the cooling chamber 20 of the refrigerator 10 according to the embodiment of the present invention and the peripheral structure thereof. In FIG. 3B, the defrost heater 42 and the heater cover 43 are omitted for convenience of explanation.

  As shown in FIG. 3A, a partition member 22 is further provided behind the partition member 26 on the inner side of the freezer compartment 12. A supply air passage 40 and a return air passage 41 defined by the partition members 22 and 26 are formed behind the freezer compartment 12, and a partition is provided behind the supply air passage 40 and the return air passage 41. A cooling chamber 20 defined by the member 22, the inner box 17 and the heat insulating partition wall 19 is formed.

  As described above, the cooler 23 and the blower 25 are disposed in the cooling chamber 20, and the defrost heater 42 is disposed below the cooler 23. The defrost heater 42 is, for example, an electric heating type heater or the like, and is used to melt frost that is energized during the defrost operation and adheres to the cooler 23. A heater cover 43 is disposed above the defrost heater 42 in order to prevent defrost water generated during the defrost operation from dripping directly onto the defrost heater 42. In addition, as a defrosting means, it is also possible to employ | adopt other defrost systems, such as an off-cycle defrost which does not use an electric heater, and a hot gas defrost, for example.

  As illustrated, the outlet 41 </ b> A of the return air passage 41 is provided at the lower end of the partition member 26 and is formed along the upper surface 19 </ b> A of the heat insulating partition wall 19. Further, the outlet 21 </ b> A of the return air passage 21 is formed on the side surface 19 </ b> B of the heat insulating partition wall 19. The side wall 19 </ b> B of the heat insulating partition wall 19 is disposed below the outlet 41 </ b> A of the return air passage 41 and above the outlet 21 </ b> A of the return air passage 21. As shown in FIG. 3B, the return air passages 41 and 21 have two outlets 41A and 41B and outlets 21A and 21B, respectively, and communicate with the cooling chamber 20.

  The eaves member 44 is formed using, for example, an aluminum sheet attached to the surface of the heat insulating partition wall 19. One end 44A (see FIG. 4A) side of the flange member 44 is disposed in the return air passage 41 through the outlet 41A, and the other end 44B (see FIG. 4A) side of the flange member 44 is an insulating partition. It arrange | positions toward the defrost heater 42 side from the side surface 19B of the wall 19. As shown in FIG. And since the eaves member 44 is arrange | positioned in the vicinity of the defrost heater 42, heat resistance is considered and it is preferable to shape | mold from a metal material.

  FIG. 3B is a cross-sectional view taken along the line AA shown in FIG. 3A and shows a structure in which the inside of the cooling chamber 20 is viewed from the back side. The outlets 41A and 41B of the return air passage 41 from the freezer compartment 12 and the outlets 21A and 21B of the return air passage 21 from the refrigerator compartment 13 are arranged. When the lateral width of the outlets 41A and 41B of the return air passage 41 is L1, the lateral width of the flange member 44 is L2, and the lateral width of the outlets 21A and 21B of the return air passage 21 is L3, at least the relationship of L2> L3 is satisfied. The eaves member 44 is disposed so as to cover all the upper areas of the opening areas of the outlets 21A and 21B.

  With this structure, the frost attached to the cooler 23 during the defrosting operation is melted and defrosted water is generated, and the defrosted water flows along the side surface 19B of the partition member 22 and the heat insulating partition wall 19. However, the defrost water is prevented from flowing in and around the return air passage 21 by covering the outlets 21A and 21B. As a result, there is no need to provide an aluminum sheet for preventing defrost water from entering the return air passage 21, and the inside of the return air passage 21 is not cooled via the aluminum sheet. And although mentioned later for details, by preventing that the inside of the return air path 21 is cooled more than necessary, the thickness of the heat insulation partition wall 19 by the side of the freezer compartment 12 can be made thin, The internal volume can be increased.

  FIG. 4A is a side cross-sectional view for explaining the flow of cool air in the cooling chamber 20 during the cooling operation of the refrigerator 10 according to the embodiment of the present invention. FIG. 4B is a side cross-sectional view for explaining the flow of cool air in the cooling chamber 20 when the cooling operation of the refrigerator 10 according to the embodiment of the present invention is stopped.

  As shown in FIG. 4 (A), during the cooling operation, the compressor 32 (see FIG. 1 (B)) and the blower 25 (see FIG. 1 (B)) are operated and cooled through the cooler 23. The cool air in 20 is sent out by the blower 25. And the cold air sent out from the cooling chamber 20 by the air blower 25 returns to the cooling chamber 20 via the freezer compartment 12 and the refrigerator compartment 13, and is cooled again via the cooler 23. That is, during the cooling operation, the cool air cooled through the cooler 23 circulates in the refrigerator 10 through the blower 25.

  As described above, the one end 44A side of the gutter member 44 is disposed along the upper surface 19A of the heat insulating partition wall 19 of the outlets 41A and 41B of the return air passage 41, and the other end 44B side of the gutter member 44 is defrosted. It is disposed up to the vicinity of the heater 42. The separation distance L4 between the other end 44B of the gutter member 44 and the defrosting heater 42 is larger than the separation distance L5 between the lower end of the partition member 22 of the outlets 41A and 41B of the return air passage 41 and the end of the heater cover 43. It is narrower.

  With this structure, as indicated by an arrow 45, most of the cold air returning from the return air passage 41 of the freezer compartment 12 flows from between the lower end of the partition member 22 and the end of the heater cover 43 into the cooler 23. Flowing. As indicated by an arrow 46, a part of the cool air returning from the return air passage 41 flows from between the other end 44 </ b> B of the gutter member 44 and the defrost heater 42 to the lower side of the cooling chamber 20. However, since the path of the arrow 45 has a wider air flow path due to the relationship of L5> L4, the resistance becomes smaller, and the suction force of the blower 25 to the upper side of the cooling chamber 20 is larger. Flows into the cooler 23 from between the lower end of the partition member 22 and the end of the heater cover 43.

  On the other hand, as indicated by an arrow 47, most of the cool air returning from the return air passage 21 of the refrigerating chamber 13 circulates from the rear side of the defrost heater 42 and flows into the cooler 23. As a result, cold air returning from the return air passage 41 in the freezer compartment 12 and cold air returning from the return air passage 21 in the refrigerator compartment 13 are prevented from colliding in the vicinity of the defrost heater 42. And the cold air which returns to the cooling chamber 20 from each return air path 41 and 21 collides with each other, and it is prevented that the flow is disturb | confused and the efficient flow of cold air in the cooling chamber 20 is implement | achieved.

  As shown in FIG. 4B, when the cooling operation is stopped, as indicated by an arrow 48, the compressor 32 (see FIG. 1B) and the blower 25 (see FIG. 1B) are stopped and cooled. Cold air in the chamber 20 descends below the cooling chamber 20. Further, as indicated by arrows 49 and 50, the cold air returning from the return air passage 41 of the freezer compartment 12 and the cold air returning from the return air passage 21 of the refrigerator compartment 13 also descends below the cooling chamber 20.

  Here, as indicated by an arrow 48, the cool air that comes down from the inside of the cooler 23 or from above the cooler 23 is most cooled. Further, as indicated by an arrow 49, the cold air returning from the return air passage 41 of the freezer compartment 12 is also cooled by returning directly to the cooling chamber 20 without going through the refrigerator compartment 13.

  Therefore, the cold air indicated by arrows 48 and 49 flows into the return air passage 21, so that the inside of the return air passage 21 is cooled, frost adheres to the side wall, and the frost grows thick so that the return air flows. There is a possibility that the passage 21 is blocked and poor cooling occurs. In particular, since cold air from the refrigerator compartment 13 (see FIG. 1B) with a large amount of moisture contained in the cold air flows through the return air passage 21, frost is easily generated by the cold air.

  However, as described above, the provision of the eaves member 44 narrows the air flow path on the front side of the defrosting heater 42 and increases the resistance. Most of the cold air that comes down from above flows to the rear side of the defrost heater 42. In addition, as indicated by an arrow 49, the cold air returning from the return air passage 41 of the freezer compartment 12 flows from the outlets 21 </ b> A and 21 </ b> B of the return air passage 21 to the far side along the saddle member 44.

  That is, by providing the eaves member 44 above the outlets 21A and 21B of the return air passage 21, it becomes difficult for the cold air indicated by the arrows 48 and 49 to flow into the return air passage 21 and the return air passage 21. A structure in which frost does not easily adhere to the inside is realized.

  Furthermore, as described above, the arrangement of the eaves member 44 prevents water from entering the return air passage 21 and prevents the aluminum sheet or the aluminum tape from being provided in the return air passage 21. Realized. With this structure, the inside of the return air passage 21 is prevented from being cooled more than necessary through the aluminum sheet or the aluminum tape. Further, a structure is realized in which the cold air that has descended from the cooling chamber 20 does not easily flow into the return air passage 21. As a result, the thickness of the heat insulating partition wall 19 on the freezer compartment 12 side can be reduced, and the internal volume in the freezer compartment 12 can be increased.

  FIG. 5A is a perspective view for explaining the gutter member 44 disposed in the cooling chamber 20 of the refrigerator 10 according to the embodiment of the present invention. FIG. 5B is a side view for explaining the gutter member 44 disposed in the cooling chamber 20 of the refrigerator 10 according to the embodiment of the present invention. FIG. 5C is a side cross-sectional view for explaining the gutter member 44 disposed in the cooling chamber 20 of the refrigerator 10 according to the embodiment of the present invention.

  Although FIG. 5A shows a state before the flange member 44 is bent, the flange member 44 is formed using, for example, an aluminum sheet attached to the side surface of the heat insulating partition wall 19. First, a sheet-like aluminum sheet 51 is prepared, and the aluminum sheet 51 is cut out in accordance with the shape of the flange member 44. In addition, the dashed-dotted line 52 and the dashed-two dotted line 53 which are shown on the aluminum sheet 51 are lines which perform a bending process at the next process.

  Next, as shown in FIG. 5 (B), one end side of the aluminum sheet 51 (see FIG. 5 (A)) is folded in one direction along a dashed-dotted line 52, for example, in a substantially U shape. Process. After that, the other end side of the aluminum sheet 51 is bent in the direction of the two-dot chain line 53, for example, in a direction opposite to the one direction as in a substantially S shape, and then the shape is adjusted so that the scissors member 44 is completed.

  As shown in FIG. 5C, one end 44A side of the flange member 44 is disposed in the return air passage 41 (see FIG. 1B), and a part of the flange member 44 is thermally insulated by, for example, a double-sided tape 54. It is bonded to the upper surface 19A and the side surface 19B of the partition wall 19. Further, on the one end 44 </ b> A side of the flange member 44, the flange member 44 is fixed using an aluminum tape 55 so that the flange member 44 is not peeled off from the heat insulating partition wall 19. As described above, after bending the plate-like aluminum sheet 51 by two bending steps, the flange member 44 is bonded to the heat insulating partition wall 19 by bonding the flange member 44 together. Is improved.

  In the present embodiment, the two-stage refrigerator 10 in which the freezer compartment 12 is arranged in the upper stage of the refrigerator 10 and the refrigerator compartment 13 is arranged in the lower stage has been described. However, the present invention is not limited to this case. For example, it may be a three-stage refrigerator in which a freezer room, a refrigerator room, and a vegetable room are arranged. Even in the case of this three-stage refrigerator, by adopting the structure using the same urn member 44 as the countermeasure against the return air path from the refrigerator compartment described above, the return air path from the vegetable room can be removed from the vegetable room. The same effect can be obtained in the return air path. In addition, various modifications can be made without departing from the scope of the present invention.

DESCRIPTION OF SYMBOLS 10 Refrigerator 11 Heat insulation box 12 Freezer compartment 13 Refrigerating room 19 Heat insulation partition wall 20 Cooling chamber 21, 41 Return air path 21A, 21B, 41A, 41B Exit 22, 26, 29 Partition member 23 Cooler 25 Blower 32 Compressor 42 Exclusion Frost heater 43 Heater cover 44

Claims (5)

A storage chamber formed inside the heat insulation box,
A cooling chamber in which a cooler for cooling the air supplied to the storage chamber is disposed;
A return air path for circulating the air cooled in the cooling chamber through the storage chamber and returning from the storage chamber to the cooling chamber;
The return air passage includes at least a first return air passage returning from the freezer compartment constituting the storage chamber to the cooling chamber, and either the refrigeration compartment or the vegetable compartment constituting the storage compartment to the cooling compartment. And a second return air path returning to
The first return air passage is disposed above a heat insulation partition wall of the heat insulation box between the freezer compartment and the refrigerator compartment or the vegetable compartment, and the cooling chamber of the first return air passage is provided. The outlet to is disposed above the heat insulating partition wall,
The second return air passage is disposed in the heat insulating partition wall, and the outlet of the second return air passage to the cooling chamber is disposed on a side surface of the heat insulating partition wall.
Between the outlet of the first return air passage and the outlet of the second return air passage, a eaves member extending from the side surface of the heat insulating partition wall to the cooling chamber side is disposed,
The refrigerator is characterized by covering the upper part of the outlet of the second return air passage and being wider than the lateral width of the outlet of the second return air passage. A defrost heater and a heater cover above the defrost heater are disposed below the cooler of the cooling chamber,
The refrigerator according to claim 1, wherein a separation distance between the outlet of the first return air passage and the heater cover is wider than a separation distance between the gutter member and the defrosting heater. The flange member is formed by bending a metal plate-like body into a substantially S shape,
One end side of the flange member is fixed in the first return air passage,
The refrigerator according to claim 1 or 2, wherein the other end side of the gutter member is disposed in the cooling chamber. The first return air passage is formed along an upper surface of the heat insulating partition wall,
The refrigerator according to claim 3, wherein the flange member is attached along the side surface from the upper surface of the heat insulating partition wall.   The refrigerator according to claim 3 or 4, wherein the metal plate-like body is an aluminum sheet.

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