refrigerator

Abstract

The refrigerator of the present invention includes a second evaporator chamber accommodating a second evaporator, and a damper component (410) for opening and closing an opening arranged between the second evaporator chamber and the first switching chamber. The damper component (410) includes a first switching chamber second baffle (412) arranged to be able to contact and separate from the opening, a driving part (413) for rotating and driving the first switching chamber second baffle (412), and a baffle support part (413c) protruding upward from the top surface (414f) of the driving part (413) and supporting the first switching chamber second baffle (412). The baffle support part (413c) includes an umbrella part (416) having a larger diameter than the shaft part of the baffle support part (413c).

Description

Technical Field

[0001] The invention relates to a refrigerator. Background Art

[0002] Patent document 1 describes that a damper device 1 includes a driving unit 5, a partition plate 4 driven by the driving unit 5, and a frame 2 formed with an opening portion opened and closed by the partition plate 4, and includes a cover member 9 that covers a joint 8 of the driving unit 5 and prevents moisture existing outside the driving unit 5 from entering the inside. Patent document 2 describes that when the pivot of the partition plate 42 is vertically arranged, condensed water dripping from the partition plate 42 when the opening portion 40a is opened accumulates and freezes, and the rotation of the partition plate 42 is blocked, so the rotation shaft 42a is horizontally arranged at the upper end of the partition plate 42.

[0003] Prior art literature

[0004] Patent Literature

[0005] Patent Document 1: Japanese Patent Application Publication No. 2005-83672 (Paragraph 0018, Figure 1 )

[0006] Patent Document 2: Japanese Patent Application Publication No. 2006-214684 (Paragraph 0043, Fig.11 ) Summary of the invention

[0007] Problems to be solved by the invention

[0008] However, when the rotating shaft supporting the partition is arranged horizontally as shown in Patent Documents 1 and 2, if water adheres to the rotating shaft, the water tends to remain on the surface of the rotating shaft, and there is a risk that the opening and closing action of the partition will be hindered due to freezing of water.

[0009] Technical solutions to solve problems

[0010] The present invention is characterized in that it includes a cooler chamber for accommodating a cooler and a damper component for opening and closing an opening arranged between the cooler chamber and a storage chamber, the damper component having a baffle arranged to be able to contact and separate from the opening, a driving portion for rotating and driving the baffle, and a baffle supporting portion protruding upward from a top surface of the driving portion and supporting the baffle, the baffle supporting portion having an umbrella portion with a larger diameter than the shaft portion of the baffle supporting portion. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a front view showing the refrigerator according to this embodiment.

[0012] Figure 2 yes Figure 1 Cross-sectional view along line II-II.

[0013] Figure 3 It is a front view showing the flow of cold air inside the back side of the refrigerator according to the present embodiment.

[0014] Figure 4 It is a front view showing the flow of cold air in the refrigerator according to the present embodiment.

[0015] Figure 5 yes Figure 4 An enlarged view of a main part of the VV cross section shown.

[0016] Figure 6 This is a schematic diagram of the cooling air duct structure.

[0017] Figure 7 It is a structural diagram showing a refrigeration cycle of the refrigerator according to this embodiment.

[0018] Figure 8 It is an exploded perspective view showing a heat insulating partition wall provided on the back side of the switch chamber.

[0019] Fig. 9 This is an exploded perspective view of the heat-insulating partition wall as viewed from the rear.

[0020] Fig.10 It is a perspective view showing the internal structure of the damper duct.

[0021] Fig.11 It is a perspective view showing the inside of the front case of the damper duct member.

[0022] Fig.12 It is a plan view showing the inside of the front box body to which the damper member is installed.

[0023] Fig.13 It is a perspective view showing the inner side of the rear case of the damper duct member.

[0024] Fig.14 yes Fig.10 View from the XIV direction.

[0025] Fig.15 This is a perspective view of the damper member as viewed from the front.

[0026] Fig.16 This is a perspective view of the damper member as viewed from the rear side.

[0027] Fig.17 It is an exploded perspective view of the damper components.

[0028] Fig.18 It is a side view of the damper component.

[0029] Fig.19 yes Fig.18 XIX-XIX line cross-sectional view.

[0030] Fig. 20 It is a front view of the insulation partition duct plate.

[0031] Fig.21 yes Fig. 20 Cross-sectional view of line XXI-XXI.

[0032] Fig. 22 yes Fig.21 Enlarged view of part A.

[0033] Fig.23 yes Fig.21 Enlarged view of part B.

[0034] Fig.24 It is a cross-sectional view of the first switch chamber damper fixing portion.

[0035] Fig.25 This is the distribution of strain of the sealing member when the first switching chamber first damper abuts against the abutment portion and performs sealing.

[0036] Fig.26 It is a vector diagram of the tensile direction of the corner of the sealing component.

[0037] Fig. 27 The diagram shows the position of the edge of the seal member at the initial sealing position where the first damper of the first switching chamber contacts the contact portion and starts sealing, and the position of the edge of the seal member at the deformed sealing position where the seal member is in close contact and has improved sealing performance.

[0038] Fig.28A The diagram shows the shape of the first damper of the first switching chamber and evaluates the close contact of the sealing member when the sealing member abuts against the abutment portion and performs sealing.

[0039] Fig.28B The diagram shows the shape of the first damper of the first switching chamber and evaluates the close contact of the sealing member when the sealing member abuts against the abutment portion and performs sealing.

[0040] Fig.28C The diagram shows the shape of the first damper of the first switching chamber and evaluates the close contact of the sealing member when the sealing member abuts against the abutment portion and performs sealing.

[0041] Fig.28D The diagram shows the shape of the first damper of the first switching chamber and evaluates the close contact of the sealing member when the sealing member abuts against the abutment portion and performs sealing.

[0042] Fig.29 The ratio of the fillet (R) is the horizontal axis, the opening area of ​​the baffle is the vertical axis, and the Figures 28A to 28D Graph showing confirmed sealing performance (×, △, ○, ◎). DETAILED DESCRIPTION

[0043] The following describes a specific embodiment of the present invention (this embodiment). However, this embodiment is not limited to the following content and can be arbitrarily changed within the scope of not damaging the gist of the present invention. Figure 1 and Figure 2 The directions shown in FIG. 1 are used as a reference for description.

[0044] Figure 1 1 is a front view showing a refrigerator according to the present embodiment. In addition, the following description will be given by taking a refrigerator 1 having six doors as an example, but the invention is not limited to six doors.

[0045] like Figure 1 As shown, the refrigerator 1 has an insulated box body 10 including a refrigerating chamber 2, an ice-making chamber 3, a freezing chamber 4, a first switching chamber 5 (upper switching chamber, storage chamber) and a second switching chamber 6 (lower switching chamber, storage chamber). The first switching chamber 5 can switch the temperature range from the refrigerating temperature range (e.g., 1°C to 6°C) to the freezing temperature range (e.g., about -20°C to -18°C). The second switching chamber 6 can also switch the temperature range from the refrigerating temperature range to the freezing temperature range. The refrigerating chamber 2 is set in the refrigerating temperature range (e.g., 6°C), and the ice-making chamber 3 and the freezing chamber 4 are set in the freezing temperature range (e.g., about -20°C).

[0046] In addition, the refrigerator 1 is provided with refrigerator compartment doors 2a and 2b for opening and closing the refrigerator compartment 2, an ice-making compartment door 3a for opening and closing the ice-making compartment 3, a freezer compartment door 4a for opening and closing the freezer compartment 4, a first switch compartment door 5a for opening and closing the first switch compartment 5, and a second switch compartment door 6a for opening and closing the second switch compartment 6 on the front side of the heat-insulating box body 10. The refrigerator compartment doors 2a and 2b are configured to be able to open in opposite directions. The ice-making compartment door 3a, the freezer compartment door 4a, the first switch compartment door 5a, and the second switch compartment door 6a are configured to be able to be pulled out in the near side direction. The refrigerator compartment doors 2a and 2b, the ice-making compartment door 3a, the freezer compartment door 4a, the first switch compartment door 5a, and the second switch compartment door 6a are heat-insulating doors. In addition, an operating unit 26 for operating the temperature setting operation in the box is provided on the outer side surface of the refrigerator compartment door 2a.

[0047] The refrigerating chamber 2 is separated from the freezing chamber 4 and the ice making chamber 3 by a heat insulating partition wall 28. The freezing chamber 4 and the ice making chamber 3 are separated from the first switching chamber 5 by a heat insulating partition wall 29, and the first switching chamber 5 and the second switching chamber 6 are separated by a heat insulating partition wall 30.

[0048] Door hinges (not shown) for fixing the heat insulating box 10 to the doors 2a, 2b are provided near the top box exterior of the heat insulating box 10 and on the front edge of the heat insulating partition wall 28. The upper door hinges are covered by a door hinge cover 16.

[0049] In the first switching chamber 5 and the second switching chamber 6 of the refrigerator 1 of the present embodiment, any one of a refrigeration temperature (maintained at about 4°C on average) and a freezing temperature (maintained at about -18°C on average) can be selected. Specifically, it is possible to select from an "FF" mode in which the first switching chamber 5 and the second switching chamber 6 are both set to freezing temperatures, an "RF" mode in which the first switching chamber 5 and the second switching chamber 6 are respectively set to refrigeration temperatures and freezing temperatures, an "FR" mode in which the first switching chamber 5 and the second switching chamber 6 are respectively set to freezing temperatures and refrigeration temperatures, and an "RR" mode in which the first switching chamber 5 and the second switching chamber 6 are both set to refrigeration temperatures.

[0050] Figure 2 yes Figure 1 Cross-sectional view along line II-II.

[0051] like Figure 2 As shown, the refrigerator 1 is constructed by separating the outside of the box from the inside of the box by filling a foam insulation material 93 (in this embodiment, polyurethane foam) between an outer box 10a made of steel plate and an inner box 10b made of synthetic resin (ABS resin in this embodiment). By installing a plurality of vacuum insulation materials with a lower thermal conductivity (higher insulation performance) than the foam insulation materials in the heat-insulating box 10 in addition to the foam insulation materials and also between the outer box 10a and the inner box 10b, the reduction of the internal volume is suppressed and the insulation performance is improved. In the refrigerator 1 of this embodiment, a vacuum insulation material 25a is installed on the back of the heat-insulating box 10, a vacuum insulation material 25b is installed on the lower surface (bottom), a vacuum insulation material is installed on the left side, and a vacuum insulation material is installed on the right side, so that heat intrusion from the outside of the box, which is higher than the temperature of the storage room, is suppressed and the insulation performance of the refrigerator 1 is improved. Similarly, in the refrigerator 1 of the present embodiment, the vacuum heat insulating material 25e is installed on the first switch chamber door 5a, and the vacuum heat insulating material 25f is installed on the second switch chamber door 6a, thereby improving the heat insulating performance of the refrigerator 1.

[0052] The refrigerator compartment doors 2a and 2b have a plurality of door frames 33a, 33b, and 33c on the inside of the refrigerator compartment. In addition, the refrigerator compartment 2 is divided into a plurality of storage spaces by frames 34a, 34b, 34c, and 34d. The ice-making compartment door 3a, the freezer compartment door 4a, the first switching compartment door 5a, and the second switching compartment door 6a respectively have an ice-making compartment container 3b, a freezer compartment container 4b, a first switching compartment container 5b, and a second switching compartment container 6b that are pulled out in one piece.

[0053] A first evaporator chamber 8a in which a first evaporator 14a is installed is provided at the back of the refrigerating chamber 2. In addition, a second evaporator chamber 8b (cooler chamber) in which a second evaporator 14b (cooler) is installed is provided substantially at the back of the first switching chamber 5 and the second switching chamber 6. In addition, the first switching chamber 5 and the second switching chamber 6, the second evaporator chamber 8b, and the second fan exhaust air path 12 described later are separated by a heat insulating partition wall 27.

[0054] In addition, the heat-insulating partition wall 27 is separate from the heat-insulating box body 10, the heat-insulating partition wall 29, and the heat-insulating partition wall 30, and is fixed in a manner of being in contact with the heat-insulating box body 10, the heat-insulating partition wall 29, and the heat-insulating partition wall 30 via a sealing member (for example, soft polyurethane foam) not shown in the figure, and can be detached. In this way, by forming the heat-insulating partition wall 27 separately and being detachable, when a malfunction occurs in the second evaporator 14b housed in the second evaporator chamber 8b, the second fan 9b described later, the first switching chamber first baffle 411, the first switching chamber second baffle 412, the second switching chamber first baffle 421, the second switching chamber second baffle 422, etc., which are covered by the heat-insulating partition wall 27, the heat-insulating partition wall 27 can be removed and easily maintained.

[0055] In addition, vacuum insulation materials are not installed inside the heat-insulating partitions 27 and 28, but polystyrene foam (expanded polystyrene) as a foam insulation material is installed as the main insulation component. On the other hand, polystyrene foam as a foam insulation material is installed inside the heat-insulating partitions 29 and 30, and vacuum insulation materials 25g and 25h are installed respectively, thereby improving the insulation performance. Vacuum insulation materials 25g and 25h have lower thermal conductivity (higher insulation performance) than foam insulation materials, so the main insulation component of the heat-insulating partitions 29 and 30 is vacuum insulation material. In addition, as the foam insulation material used inside the heat-insulating partitions 27, 28, 29, and 30, polyurethane foam and polyethylene foam can also be used.

[0056] A refrigerating chamber temperature sensor 41 is provided on the back side of the refrigerator chamber 2, the freezer chamber 4, the first switching chamber 5, and the second switching chamber 6. Figure 4 )、Freezer temperature sensor 42 (reference Figure 4 )、First switching chamber temperature sensors 43a, 43b (reference Figure 4 )、Second switching chamber temperature sensors 44a, 44b (reference Figure 4). A first evaporator temperature sensor 40a is provided on the upper part of the first evaporator 14a. A second evaporator temperature sensor 40b is provided on the upper part of the second evaporator 14b. These sensors are used to detect the temperatures of the refrigerating chamber 2, the freezing chamber 4, the first switching chamber 5, the second switching chamber 6, the first evaporator chamber 8a, the first evaporator 14a, the second evaporator chamber 8b, and the second evaporator 14b. In addition, an external air temperature sensor 37 and an external air humidity sensor 38 are provided inside the door hinge cover 16 of the top plate portion of the refrigerator 1 to detect the temperature and humidity of the external air (air outside the box). In addition, by providing a door sensor (not shown), the open and closed states of the doors 2a, 2b, 3a, 4a, 5a, and 6a are detected respectively.

[0057] The second evaporator 14b is defrosted by energizing the defrost heater 21, which is a heating unit provided at the bottom of the second evaporator 14b, when the compressor 24 is stopped. The defrost heater 21 (heater) may be, for example, an electric heater of 50W to 200W, and a 150W radiation heater is used in this embodiment. The defrost water generated when the second evaporator 14b is defrosted is discharged from the water flow groove 23b at the bottom of the second evaporator chamber 8b to the second evaporation pan 32 provided at the top of the compressor 24 via the second drain pipe 23c, and evaporates due to the heat dissipation from the compressor 24 and the ventilation by the fan (not shown) provided in the machine chamber 39.

[0058] Next, refer to Figures 3 to 6 and appropriate reference Figure 2 Describe the air path structure inside the box. Figure 3 This is a front view showing the flow of cold air inside the back of the box. Figure 3 Yes Remove Figure 1 A front view of the door, container, and the insulating partition wall 27 described later.

[0059] like Figure 3 As shown, a first fan 9a is provided above the first evaporator 14a. The cooling air sent by the first fan 9a is sent to the refrigerating chamber 2 via the refrigerating chamber air passage 110 and the refrigerating chamber outlet 110a, thereby cooling the refrigerating chamber 2. Here, the first fan 9a is composed of, for example, a turbo fan (backward blade fan) as a centrifugal fan, and can control the rotation speed to a high speed (1600 min / min). -1 ) and low speed (1000min -1 ). The air delivered to the refrigerating chamber 2 is returned from the refrigerating chamber return port 110b (reference Figure 2 ) and the refrigerator compartment return port 110c to return to the first evaporator chamber 8a and exchange heat with the first evaporator 14a again.

[0060] The refrigerator compartment discharge port 110a of the refrigerator compartment 2 is provided at the upper part of the refrigerator compartment 2. In this embodiment, air is discharged above the uppermost shelf 34a and the second shelf 34b. In addition, the refrigerator compartment return port 110c is provided at the back of the space formed between the shelf 34c and the shelf 34d of the refrigerator compartment 2. Figure 2 ) is arranged on the approximate back side of the space formed between the shelf 34d and the heat-insulating partition wall 28 of the refrigerating chamber 2.

[0061] An ice-making chamber outlet 120a is provided at the back of the ice-making chamber 3. The ice-making chamber outlet 120a is provided at the upper portion of the ice-making chamber 3. A freezer chamber outlet 120b is provided at the back of the freezer chamber 4. The freezer chamber outlet 120b is provided at the upper portion of the freezer chamber 4. The ice-making chamber outlet 120a and the freezer chamber outlet 120b are connected to the freezer chamber air path 130. The cold air sent from the second fan 9b passes through the freezer chamber air path 130 and branches as indicated by the dotted arrows, and is discharged from the ice-making chamber outlet 120a and the freezer chamber outlet 120b as indicated by the solid arrows.

[0062] The refrigerator 1 of the present embodiment has a first switching chamber first baffle 411, a first switching chamber second baffle 412, a second switching chamber first baffle 421, and a second switching chamber second baffle 422 as air supply cutoff means leading to the first switching chamber 5 and the second switching chamber 6. The first switching chamber first baffle 411 and the first switching chamber second baffle 412 are mounted on a partition at the back of the first switching chamber 5. The second switching chamber first baffle 421 and the second switching chamber second baffle 422 are mounted substantially at the back of the second switching chamber 6. Here, the opening area of ​​the first switching chamber first baffle 411 is formed to be larger than the opening area of ​​the first switching chamber second baffle 412. The opening area of ​​the second switching chamber first baffle 421 is formed to be larger than the opening area of ​​the second switching chamber second baffle 422.

[0063] The second evaporator 14b is disposed in the second evaporator chamber 8b substantially at the back of the first switching chamber 5, the second switching chamber 6 and the heat-insulating partition wall 30. A second fan 9b is disposed above the second evaporator 14b. The second fan 9b is a turbo fan (backward blade fan) as a centrifugal fan, and the rotation speed can be controlled to a high speed (1800 min / min). -1 ) and low speed (1200min -1 The air cooled in the ice making chamber 3 and the freezing chamber 4 returns from the freezing chamber return port 120c to the second evaporator chamber 8b (below the second evaporator 14b) via the freezing chamber return air passage 120d, and exchanges heat with the second evaporator 14b again.

[0064] A first switching chamber return port 111c is formed at the lower back side of the first switching chamber 5. The cold air after cooling the first switching chamber 5 is discharged from the first switching chamber return port 111c, returns to the second evaporator chamber 8b (below the second evaporator 14b) via the freezing chamber return air passage 120d, and performs heat exchange with the second evaporator 14b again.

[0065] Figure 4 This is a front view showing the flow of cold air in the box. Figure 4 Yes, remove Figure 1 Front view of the door and container after the state.

[0066] like Figure 4 As shown, the first switching chamber first discharge ports 111a, 111a for discharging cold air into the first switching chamber 5 are provided on the heat-insulating partition wall 27. The first switching chamber first discharge port 111a is formed to be elongated in the width direction (left-right direction) and is located on the left side compared to the center in the width direction (on the side opposite to the first switching chamber return port 111c in the left-right direction). In addition, the first switching chamber first discharge port 111a is located on the upper side compared to the center in the height direction of the box.

[0067] In addition, the first switching chamber second outlet 111b for discharging cold air into the first switching chamber 5 is formed on the heat-insulating partition wall 27. The first switching chamber second outlet 111b is formed on the side surface on the left side of the heat-insulating partition wall 27. Thus, the cold air discharged from the first switching chamber second outlet 111b is discharged toward the inner wall surface (left side surface) of the inner box 10b. In addition, the first switching chamber connecting passage 111d for connecting the first switching chamber second outlet 111b with the first switching chamber second baffle 412 is formed on the heat-insulating partition wall 27.

[0068] In addition, the heat-insulating partition wall 27 is provided with second switching chamber first outlets 112a, 112a for discharging cold air into the second switching chamber 6. The second switching chamber first outlet 112a is formed to be elongated in the width direction (left-right direction) and is located on the left side compared to the center in the width direction (on the side opposite to the second switching chamber return port 112c in the left-right direction). In addition, the second switching chamber first outlet 112a is located on the upper side compared to the center in the height direction of the box.

[0069] In addition, a second switching chamber second outlet 112b for discharging cold air into the second switching chamber 6 is formed on the heat-insulating partition wall 27. The second switching chamber second outlet 112b is formed on the side surface on the left side of the heat-insulating partition wall 27. Thus, the cold air discharged from the second switching chamber second outlet 112b is discharged toward the inner wall surface (left side surface) of the inner box 10b. In addition, a second switching chamber connecting passage 112d is formed on the heat-insulating partition wall 27 so that the second switching chamber second outlet 112b is connected to the second switching chamber second baffle 422.

[0070] Figure 5 yes Figure 4 An enlarged view of the main part of the VV section.

[0071] like Figure 5 As shown, the second switching chamber 6 has a second switching chamber return port 112c at the upper back portion. The air flowing in from the second switching chamber return port 112c flows in the second switching chamber return air passage 112d extending downward from the second switching chamber return port 112c, reaches the second evaporator chamber inlet 112f formed at a lower height position than the second switching chamber return port 112c, and flows into the second evaporator chamber 8b from below.

[0072] By providing a downwardly extending air passage (second switching chamber return air passage 112d) between the second switching chamber return port 112c and the second evaporator chamber inlet 112f, when the second fan 9b stops, the low-temperature air in the second evaporator chamber 8b is less likely to flow back into the second switching chamber 6. As a result, the refrigerator 1 can be made in which the second switching chamber 6 is less likely to be overcooled, especially when the second switching chamber 6 is set to the refrigeration temperature. In addition, it is sufficient to have a downwardly extending air passage between the second switching chamber return port 112c and the second evaporator chamber inlet 112f, so it is also possible to configure the air flowing in from the second switching chamber return port 112c to flow upward and then flow in the downwardly extending air passage. Such a backflow suppression structure is intended to suppress overcooling of the storage chamber, so it is not limited to between the switching chamber and the evaporator chamber, and can also be arranged between the refrigeration chamber, the fresh ice chamber, or the weak freezing chamber (i.e., a chamber with a storage temperature of about -10°C or -7°C as the lower limit) and the evaporator chamber.

[0073] Figure 6 This is a schematic diagram of the cooling air duct structure.

[0074] like Figure 6As shown, when the damper 431 (freezer damper) is controlled to be in an open state, the air that has undergone heat exchange with the second evaporator 14b and has become low temperature is transported to the ice making room 3 and the freezer 4 through the second fan exhaust air path 12, the freezer air path 130, the ice making room exhaust port 120a and the freezer exhaust port 120b by driving the second fan 9b, and cools the water in the ice tray of the ice making room 3, the ice in the ice making room container 3b, and the food stored in the freezer container 4b in the freezer 4. The air cooled in the ice making room 3 and the freezer 4 is returned to the second evaporator chamber 8b (reference) from the freezer return port 120c through the freezer return air path 120d. Figure 2 ) and exchanges heat with the second evaporator 14b again.

[0075] When the first switch chamber first damper 411 is controlled to be in an open state, the air pressurized by the second fan 9b is discharged through the second fan exhaust duct 12, the first switch chamber duct 140, the first switch chamber first damper 411, and the exhaust port forming member 111 (refer to Figure 4 ) is directly transported to the first switching chamber container 5b provided in the first switching chamber 5, and the food in the first switching chamber container 5b is directly cooled. The air after cooling the first switching chamber 5 flows through the first switching chamber return port 111c and the freezing chamber return air passage 120d, and returns to the second evaporator chamber 8b, and exchanges heat with the second evaporator 14b again. Among them, direct cooling refers to a method of cooling the contained food by directly supplying cold air.

[0076] When the first switching chamber second damper 412 is controlled to be in an open state, the air pressurized by the second fan 9b is discharged from the second fan air passage 12, the first switching chamber air passage 140, the first switching chamber second damper 412, and the outlet forming member 111 (refer to Figure 4 ) is discharged toward the side wall of the first switching chamber 5, and the food in the first switching chamber container 5b is indirectly cooled. The air after cooling the first switching chamber 5 flows through the first switching chamber return port 111c and the freezer chamber return air duct 120d, returns to the second evaporator chamber 8b, and exchanges heat with the second evaporator 14b again. Indirect cooling refers to a method of cooling the food by supplying cold air without blowing it directly to the stored food in order to suppress the drying of the food.

[0077] When the second switch chamber first damper 421 is controlled to be in an open state, the air pressurized by the second fan 9b is discharged through the second fan exhaust duct 12, the second switch chamber duct 150, the second switch chamber first damper 421, and the exhaust port forming member 112 (refer to Figure 4) is directly transported to the second switch chamber container 6b provided in the second switch chamber 6 to cool the food in the second switch chamber container 6b. The air after cooling the second switch chamber 6 flows through the second switch chamber return port 112c and the second switch chamber return air passage 112d, returns to the second evaporator chamber 8b, and exchanges heat with the second evaporator 14b again.

[0078] When the first switching chamber second damper 422 is controlled to be in an open state, the air pressurized by the second fan 9b is discharged from the second fan air passage 12, the second switching chamber air passage 150, the second switching chamber second damper 422, and the outlet forming member 112 (refer to Figure 4 ) is discharged toward the side wall of the second switching chamber 6, and the food in the second switching chamber container 6b is indirectly cooled. The air after cooling the second switching chamber 6 flows through the second switching chamber return port 112c and the second switching chamber return air passage 112d, and returns to the second evaporator chamber 8b, and exchanges heat with the second evaporator 14b again.

[0079] In addition, in the present embodiment, the first switching chamber air passage 140 and the second switching chamber air passage 150 are constituted by a damper duct member 300 described later.

[0080] Figure 7 It is a structural diagram showing a refrigeration cycle of the refrigerator according to this embodiment.

[0081] like Figure 7 As shown, the refrigerator 1 of this embodiment includes a compressor 24, an external radiator 50a as a heat dissipation unit for dissipating heat of the refrigerant, a wall heat dissipation pipe 50b (arranged on the inner surface of the outer box 10a in the area between the outer box 10a and the inner box 10b), and a heat insulation partition wall 28, 29, 30 (refer to Figure 2 ) front part and heat insulation box 10 (reference Figure 2 ), a first capillary tube 53a and a second capillary tube 53b as a decompression unit for decompressing the refrigerant, and a first evaporator 14a and a second evaporator 14b that absorb the heat in the box by exchanging heat between the refrigerant and the air in the box. In addition, the refrigerator 1 has a dryer 51 for removing moisture in the refrigeration cycle, gas-liquid separators 54a and 54b for suppressing the inflow of liquid refrigerant into the compressor 24, a refrigerant control valve 52 for controlling the refrigerant flow path, a check valve 56, and a refrigerant confluence section 55 for connecting the refrigerant flow. They are connected by refrigerant piping to form a refrigeration cycle. The refrigerant is isobutane, which is a flammable refrigerant.

[0082] The refrigerant control valve 52 has outflow ports 52a and 52b. The refrigerant control valve 52 is a valve that can be switched to four states: "state 1" in which the outflow port 52a is opened and the outflow port 52b is closed; "state 2" in which the outflow port 52a is closed and the outflow port 52b is opened; "state 3" in which both the outflow port 52a and the outflow port 52b are closed; and "state 4" in which both the outflow port 52a and the outflow port 52b are opened.

[0083] Next, the flow of the refrigerant in the refrigerator 1 of the present embodiment is described. The high-temperature and high-pressure refrigerant discharged from the compressor 24 flows through the external radiator 50a, the wall heat dissipation pipe 50b, the anti-condensation pipe 50c, and the dryer 51 in this order, and reaches the refrigerant control valve 52. The outflow port 52a of the refrigerant control valve 52 is connected to the first capillary tube 53a via the refrigerant pipe. The outflow port 52b of the refrigerant control valve 52 is connected to the second capillary tube 53b via the refrigerant pipe.

[0084] When the first evaporator 14a is used to cool the refrigerating chamber 2, the refrigerant control valve 52 is controlled to "state 1" in which the refrigerant flows to the outlet 52a side. The refrigerant flowing out of the outlet 52a is decompressed by the first capillary tube 53a and becomes low temperature and low pressure. After entering the first evaporator 14a to exchange heat with the air in the cabinet, it flows through the gas-liquid separator 54a, the heat exchange part 57a that exchanges heat with the refrigerant in the first capillary tube 53a, and the refrigerant confluence part 55, and returns to the compressor 24.

[0085] When the ice making chamber 3, the freezing chamber 4, the first switching chamber 5, and the second switching chamber 6 are cooled by the second evaporator 14b, the refrigerant control valve 52 is controlled to "state 2" in which the refrigerant flows to the outlet 52b side. The refrigerant flowing out of the outlet 52b is decompressed by the second capillary tube 53b and becomes low temperature and low pressure. After entering the second evaporator 14b and exchanging heat with the air in the cabinet, it flows through the gas-liquid separator 54b, the heat exchange part 57b that exchanges heat with the refrigerant in the second capillary tube 53b, the check valve 56, and the refrigerant confluence part 55 in this order and returns to the compressor 24. The check valve 56 is arranged in a manner to block the flow from the refrigerant confluence part 55 to the second evaporator 14b side.

[0086] Figure 8 : is an exploded perspective view showing a heat-insulating partition wall provided on the back side of the switching chamber. Figure 8 Components including the second evaporator 14b serving as a cooler are also shown.

[0087] like Figure 8 As shown, the heat insulating partition duct plate 400 is configured to include the heat insulating partition wall 27 and the damper duct member 300. The damper duct member 300 is mounted on the back side of the heat insulating partition wall 27.

[0088] The heat insulating partition wall 27 is configured to include a front panel 210, a rear panel 220, and a foam insulation material 230. The heat insulating partition wall 27 extends across the first switch chamber 5 (refer to Figure 2 ) and the second switching chamber 6 (reference Figure 2 ) is arranged behind the front panel 210. In addition, the foam insulation material 230 is composed of polystyrene foam (expanded polystyrene), which can be pre-foamed and arranged between the front panel 210 and the rear panel 220. In addition, a vacuum insulation material can also be provided instead of the foam insulation material 230.

[0089] The front panel 210 is made of synthetic resin and has a plate portion 211 that is substantially rectangular in front view. In addition, an opening 212 having a relatively large rectangular opening area is formed at the upper portion of the front panel 210. In addition, near the opening 212, the front panel 210 is provided with a plurality of openings that face the inner box 10b (see FIG. 1 ). Figure 4 ) is formed on the inner wall surface (left side) of the plate portion 211 . The opening 213 (first switching chamber second discharge port 111 b ) is formed on the side of the protrusion 211 a protrudingly formed on the plate portion 211 . The opening 213 is formed on the side of the protrusion 211 a protrudingly formed on the plate portion 211 .

[0090] In addition, in the front panel 210, an opening 214 having a large rectangular opening area is formed at the lower portion of the plate portion 211. In addition, in the front panel 210, near the opening 214, a portion of the inner box 10b (reference Figure 4 ) is formed on the inner wall surface (left side) of the plate portion 211 , and the opening 215 (second switching chamber second discharge port 112 b ) having a smaller opening area than the opening 214 is formed. The opening 215 is formed on the side of the protrusion 211 b protrudingly formed on the plate portion 211 .

[0091] In addition, a heat insulating partition wall 30 (see FIG. 2 ) is formed on the plate portion 211 above the lower openings 214 and 215 and below the upper openings 212 and 213 to be fitted. Figure 5 ) groove 216. The groove 216 is formed entirely from one end to the other end in the left-right direction of the plate portion 211. In this way, the heat insulating partition wall 27 is arranged on the back side of the switching chamber across the first switching chamber 5 and the second switching chamber 6 arranged vertically.

[0092] In addition, the plate portion 211 is provided with a first switch chamber return port 111 c above the groove portion 216 . In addition, the plate portion 211 is provided with a second switch chamber return port 112 c below the groove portion 216 .

[0093] Moreover, the discharge port forming member 111 is attached to the front surface of the plate portion 211 so as to cover the opening 212. Moreover, the discharge port forming member 112 is attached to the front surface of the plate portion 211 so as to cover the opening 214.

[0094] In addition, first switching chamber temperature sensors 43a and 43b are provided on the upper part of the plate portion 211. One of the first switching chamber temperature sensors 43b is located inside the discharge port forming member 111. In addition, second switching chamber temperature sensors 44a and 44b are provided on the lower part of the plate portion 211. One of the second switching chamber temperature sensors 44b is located inside the discharge port forming member 112.

[0095] In addition, a recessed portion 217a for inserting the bolt 250a is formed on the plate portion 211 above the opening 212. A bolt insertion hole 217c (see FIG. 217c ) for inserting the bolt 250a is formed at the front end of the recessed portion 217a. Fig. 9 ).

[0096] In addition, on the plate portion 211, a recessed portion 217b for inserting the bolt 250b is formed in the groove portion 216. A bolt insertion hole 217d (see FIG. 217d ) for inserting the bolt 250b is formed at the front end of the recessed portion 217b. Fig. 9 ).

[0097] The rear panel 220 is made of synthetic resin and has a plate portion 221 that is substantially rectangular in front view. In addition, an opening 222 is formed on the rear panel 220 at a position opposite to the opening 212 of the front panel 210. In addition, an opening 223 is formed on the rear panel 220 at a position opposite to the opening 214 of the front panel 210. In addition, a return communication passage 224 is formed on the rear panel 220 to communicate with the first switch chamber return port 111c. In addition, a return communication passage 225 is formed on the rear panel 220 to communicate with the second switch chamber return port 112c.

[0098] In addition, a freezer compartment return air passage 120d extending in the vertical direction is formed at the right end when viewed from the front on the rear panel 220. The freezer compartment return air passage 120d is connected to the return communication passage 224. In addition, a freezer compartment return port 120c connected to the freezer compartment return air passage 120d is formed at the upper portion of the rear panel 220.

[0099] Although not shown, bolt insertion holes through which the bolts 250 a are inserted and bolt insertion holes through which the bolts 350 b are inserted are formed in the rear panel 220 .

[0100] The foam insulation material 230 is composed of a first foam insulation material 230A and a second foam insulation material 230B. The first foam insulation material 230A is formed with a cutout 232A communicating with the opening 212, a cutout 234A communicating with the opening 214, a cutout 235 communicating with the first switch chamber return port 111c, and a cutout 236 communicating with the second switch chamber return port 112c. The second foam insulation material 230B is formed with a cutout 232B communicating with the cutout 232A and a cutout 234B communicating with the cutout 234A.

[0101] In addition, the first foam insulation material 230A has a through hole 237a into which the recessed portion 217a is inserted and a through hole 237b into which the recessed portion 217b is inserted. In addition, the second foam insulation material 230B has a through hole 238a into which the recessed portion 217a is inserted and a through hole 238b into which the recessed portion 217b is inserted.

[0102] The damper duct member 300 is configured to be used with the second fan 9b (refer to Figure 3 ) The cold air generated by the second evaporator 14b is introduced, and the cold air is discharged from the openings 212 and 213 of the front panel 210 to the first switching chamber 5, and the cold air is discharged from the openings 214 and 215 to the second switching chamber 6. In addition, the damper duct member 300 is configured to introduce cold air to the ice making chamber 3 and the freezing chamber 4 from the upper portion.

[0103] The damper duct member 300 is configured by combining a front case 310 disposed on the front side and a rear case 320 disposed on the rear side (back side).

[0104] In front case 310, rectangular opening 312a (blow-out port) corresponding to opening 212 and rectangular opening 312b (blow-out port) corresponding to opening 213 are formed on the upper front surface. Opening 312a is formed to have a larger opening area than opening 312b.

[0105] In front case 310, rectangular opening 312a (blow-out port) corresponding to opening 214 and rectangular opening 312b (blow-out port) corresponding to opening 215 are formed at the lower front surface. Opening 312a is formed to have a larger opening area than opening 312b.

[0106] In addition, on the front housing 310, a threaded boss 310c is formed protrudingly between the cylindrical rib 315 and the cylindrical rib 316. In addition, on the front housing 310, a threaded boss 310d is formed protrudingly between the cylindrical rib 317 and the cylindrical rib 318.

[0107] In addition, a recessed portion 330 is formed in the front housing 310. The recessed portion 330 is located substantially at the center of the damper duct member 300 in the vertical direction.

[0108] In addition, a surface heater H10 is provided on the back side of the front panel 210 corresponding to the first switching chamber 5. In addition, a surface heater H11 is provided on the inner wall of the freezer return air duct 120d on the rear panel 220. This can prevent frost from adhering to the freezer return air duct 120d. In addition, a surface heater H12 is provided on the inner wall of the damper duct member 300 opposite to the second fan 9b (see FIG. Fig.10 ). Thus, it is possible to prevent frost or water from being accumulated on the damper duct member 300, and further prevent frost from being attached to the second fan 9b.

[0109] Fig. 9 This is an exploded perspective view of the heat-insulating partition wall as viewed from the rear.

[0110] like Fig. 9 As shown, on the back of the front panel 210 (plate portion 211), a recessed portion 217a is formed to protrude rearward. In addition, on the back of the front panel 210 (plate portion 211), a recessed portion 217b is formed to protrude rearward. In addition, on the back of the front panel 210, a protrusion 210c having a bolt insertion hole is formed to protrude rearward.

[0111] A through hole 230a is formed through the second foam insulation material 230B, through which the protrusion 210c is inserted. A through hole 230b is formed through the first foam insulation material 230A, through which the protrusion 210c is inserted. In addition, although not shown, a threaded boss (not shown) is formed on the rear panel 220, into which the front end of the protrusion 210c is fitted and fixed.

[0112] In addition, a screw boss 226 that protrudes rearward (toward the damper duct member 300 ) is formed on the back surface of the rear panel 220 . The screw boss 226 is inserted into the recessed portion 330 of the damper duct member 300 .

[0113] Fig.10 : is a perspective view showing the internal structure of the damper duct. Fig.10 This is a state where the rear case 320 is removed from the damper duct member 300 .

[0114] like Fig.10As shown, a second fan 9b for increasing the pressure of the surrounding air and damper components 410, 420, and 430 are installed in the front housing 310 of the damper duct member 300. Each damper component 410 to 430 has a baffle and a driving unit for driving the baffle, and the baffle contacts and separates from an opening provided in the front housing 310 and its surroundings forming a duct portion (flow path portion) of the damper duct member 300.

[0115] The damper member 410 corresponds to the first switching chamber 5 (refer to Figure 3 ). In addition, the damper component 410 is a double damper having a first switching chamber first baffle 411 and a first switching chamber second baffle 412. In addition, in the damper component 410, the first switching chamber first baffle 411 and the first switching chamber second baffle 412 are opened and closed by a driving unit 413 provided between the first switching chamber first baffle 411 and the first switching chamber second baffle 412. The first switching chamber first baffle 411 is formed to be larger than the first switching chamber second baffle 412. In addition, the first switching chamber first baffle 411 corresponds to the first switching chamber first baffle 412 that can make the opening 312a (reference Figure 8 ) opening and closing size. In addition, the first switching chamber second baffle 412 corresponds to the opening 312b (reference Figure 8 )Opening and closing size.

[0116] The damper member 420 corresponds to the second switching chamber 6 (refer to Figure 3 ), which is the same as the damper component 410. In addition, the damper component 420 is a double damper having a second switching chamber first damper 421 and a second switching chamber second damper 422. In addition, the damper component 420 has a driving unit 413 that drives the second switching chamber first damper 421 and the second switching chamber second damper 422. The second switching chamber first damper 421 corresponds to the opening 312a (reference Figure 8 ) opening and closing size. The second baffle 422 of the second switching chamber corresponds to the opening 312b (reference Figure 8 )Opening and closing size.

[0117] The damper member 430 corresponds to the ice making chamber 3 (refer to Figure 3 ) and freezer compartment 4 (reference Figure 3 ). In addition, the damper member 430 has a baffle 431 (refer to Figure 3 ) of a single damper. In addition, the damper member 430 has a support baffle 431 (refer to Figure 3 ) of the damper frame 432 and the driving baffle 431 (reference Figure 3 ) of the driving unit 433. The driving unit 433 includes a side surface 433a having a rectifying function.

[0118] The damper member 410 is disposed on the side of the second fan 9b. The damper member 420 is disposed below the damper member 410. The damper member 430 is disposed above the second fan 9b. A damper member 430 is formed at the upper end of the front housing 310 to be connected to the freezer compartment air duct 130 (refer to Figure 3 , Figure 6 )connecting connector portion 314a.

[0119] In addition, wires W1 and W2 (electrical wires) are arranged to extend from the damper members 410 and 420. The wire W1 extends downward from the damper member 410. The wire W2 extends upward from the damper member 420.

[0120] The front box 310 has a plate portion 311a on which the damper components 410 to 430 and the second fan 9b are mounted, and an outer peripheral edge portion 311b that stands up toward the rear (toward the rear box 320) at the outer peripheral edge portion of the plate portion 311a. A ridge 311b1 extending toward the rear (toward the rear box 320) is formed at the front end of the outer peripheral edge portion 311b.

[0121] In addition, the outer peripheral edge portion 311b of the front box body 310 has a side edge portion 311s extending linearly in the vertical direction along the side portions of the damper components 410 and 420, a curved edge portion 311t formed curved along the second fan 9b, and a side edge portion 311u extending linearly in the vertical direction along the right side portion of the damper component 420.

[0122] In addition, the plate portion 311a of the front box 310 is formed with rectifier plates 311x, 311y, and 311z. The rectifier plates 311x to 311z have the function of guiding the wind discharged from the second fan 9b to the damper member 430 upward, and are located between the second fan 9b and the curved edge portion 311t. In addition, the rectifier plates 311x to 311z are arranged along the curved edge portion 311t. In addition, the rectifier plate 311y also has the function of a wire fixing member described later.

[0123] In addition, the inner wall surfaces 311x1, 311y1, and 311z1 of the rectifying plates 311x, 311y, and 311z are configured as substantially continuous surfaces, thereby effectively rectifying the wind from the second fan 9b and sending it to the damper member 430.

[0124] The drive unit 433 of the damper member 430 has a side surface 433a located near the rectifying plate 311z and forming a continuous surface with the rectifying plate 311z. Thus, the side surface 433a and the rectifying plates 311x to 311z form a part of the air passage, thereby reducing wind loss.

[0125] In addition, the above-mentioned recessed portion 330 protrudes rearward on the plate portion 311a of the front box body 310. A hole 330a (see Fig.11 ).

[0126] In addition, the plate portion 311 a of the front housing 310 is provided with wire fixing members 311 m , 311 n , and 311 o for holding wires (electric wires) W1 and W2 connected to the damper members 410 and 420 .

[0127] The wire fixing member 311m is located below the shutter member 410. The wire W1 extending from the shutter member 410 is held while passing between the side edge portion 311s and the wire fixing member 311m.

[0128] The wire fixing member 311n is located above the shutter member 420. The wire W2 extending from the shutter member 420 is held while passing between the side edge portion 311u and the wire fixing member 311n.

[0129] The wire fixing member 311o is located near the curved edge portion 311t. The wires W1 and W2 extending from the shutter members 410 and 420 are held while passing between the curved edge portion 311t and the wire fixing member 311o.

[0130] The wire W1 passes through the lower side of the recessed portion 330 and is hung on the wire fixing member 311 o. The wire W2 passes through the left side of the recessed portion 330 and is hung on the wire fixing member 311 o.

[0131] In addition, a surface heater H12 is attached to the plate portion 311a of the front box 310. The surface heater H12 is configured by appropriately bending the heat conducting wire h1 and covering it with an aluminum sheet h2 with high thermal conductivity. The surface heater H12 is arranged on the entire surface of the plate portion 311a except for the damper components 410, 420, and 430. The second fan 9b is arranged above the surface heater H12, and the second fan 9b is screwed and fixed to the plate portion 311a.

[0132] After passing through the wire fixing member 311o, the wires W1 and W2 are combined with the wire W3 extending from the second fan 9b, and pass between the rectifying plates 311x, 311y, 311z and the curved edge portion 311t. Then, the wires W1 to W3 are combined with the wires (not shown) extending from the damper member 430, and are led out to the outside from the upper end of the damper duct member 300. In this way, the wire W3 can be combined with the wires W1 and W2, so the assemblability is improved.

[0133] Fig.11 It is a perspective view showing the inside of the front case of the damper duct member.

[0134] like Fig.11As shown, a second fan 9b is fixed on the plate portion 311a (refer to Fig.10 ) of the second fan fixing portion 311c. The second fan fixing portion 311c has screw bosses 311d for screwing and fixing the second fan 9b formed at multiple locations. The second fan 9b is mounted on the screw bosses 311d via vibration-proof rubber.

[0135] In addition, a fixed damper member 410 (see Fig.10 ) of the first switch chamber damper fixing portion 312A and the fixed damper member 420 (reference Fig.10 ) of the second switching chamber damper fixing portion 312B. In addition, a freezer chamber damper fixing portion 313 for fixing the damper member 430 is formed on the plate portion 311a.

[0136] The first switch chamber damper fixing portion 312A is configured to be recessed so as to be located in front of the second fan fixing portion 311c. In other words, the first switch chamber damper fixing portion 312A is located in front of the second fan fixing portion 311c (inside the box). The second switch chamber damper fixing portion 312B is configured to be recessed so as to be located in front of the second fan fixing portion 311c, similarly to the first switch chamber damper fixing portion 312A.

[0137] A rectangular opening (blow-out port) 312a and a rectangular opening (blow-out port) 312b are formed in the first switch chamber damper fixing portion 312A. A first switch chamber first baffle 411 (see FIG. 4 ) is formed at the edge of the opening 312a. Fig.10 The first switching chamber second baffle 412 (refer to Fig.10 ) is abutted against a square frame-shaped abutment portion 312d.

[0138] In addition, a cylindrical ridge 315 (ridge) extending forward from the edge of the opening 312a is formed in the first switching chamber damper fixing portion 312A. In addition, a cylindrical ridge 316 extending forward from the edge of the opening 312b is formed in the first switching chamber damper fixing portion 312A. In addition, a cylindrical ridge 317 (ridge) extending forward from the edge of the opening 312a is formed in the second switching chamber damper fixing portion 312B. In addition, a cylindrical ridge 318 extending forward from the edge of the opening 312b is formed in the second switching chamber damper fixing portion 312B.

[0139] Fig.12 It is a plan view showing the inner side of the front box body to which the damper member is mounted.

[0140] like Fig.12As shown, the contact portion 312c is preferably formed to protrude from the reference surface (bottom surface) 312s of the first switching chamber damper fixing portion 312A to the rear (the first switching chamber first baffle 411 side). In addition, in the contact portion 312c, the top edge portion 312t and the left and right side edges 312u, 312u of the opening 312a are formed to protrude from the surface 312s. In addition, in the contact portion 312c, the bottom edge portion 312v of the opening 312a is configured not to protrude from the surface 312s (on the same plane as the surface 312s).

[0141] The contact portion 312d is formed to protrude from the reference surface (bottom surface) 312s of the first switching chamber damper fixing portion 312A toward the rear (toward the first switching chamber second damper 412 side). In addition, the contact portion 312d has a top edge 312w, a bottom edge 312x, and left and right side edges 312y, 312y of the opening 312a formed to protrude from the surface 312.

[0142] In addition, in the first switching chamber damper fixing portion 312A, a ridge 312e extending linearly in the up-down direction is formed on the left side (right side in the figure) of the opening 312a. The ridge 312e is, for example, formed in a plurality of parallel to each other. In addition, the ridge 312e is formed to have a length roughly equivalent to the height from the upper end to the lower end of the abutting portion 312c. Thus, the fixing surface (surface 312s) of the first switching chamber damper fixing portion 312A is reinforced.

[0143] In addition, a fixed damper member 410 (see Fig.10 The threaded bosses 312g, 312h, 312i are screwed together with the damper member 410 described later (see Fig.15 ) is formed by the corresponding position.

[0144] The second switch chamber damper fixing portion 312B (refer to Fig.11 ) has the same structure as the first switching chamber damper fixing portion 312A, so the same figure mark is attached and repeated description is omitted.

[0145] return Fig.11 The freezer compartment damper fixing portion 313 is located above the second fan fixing portion 311c. In addition, in the freezer compartment damper fixing portion 313, a damper fixing frame 432 is formed upright on the plate portion 311a (refer to Fig.10 ) of the fixing plate 313a. A rectangular cutout 313b is formed on the fixing plate 313a for passing cold air. In addition, a groove 313b is formed in the fixing portion 313 of the freezing chamber damper to be connected to the driving portion 433 (reference Fig.10In addition, the freezer compartment damper fixing portion 313 is provided with a recessed portion 313d for the damper to avoid the damper (damper 431) from obstructing the flow of cold air discharged from the second fan 9b when the damper (damper 431) of the damper member 430 is opened.

[0146] In addition, in the front box 310, a channel for introducing cold air into the ice making chamber 3 and the freezing chamber 4 is formed above the freezing chamber air door fixing portion 313 (refer to Figure 3 ) of the introduction passage 314. The introduction passage 314 narrows in width as it goes upward, and a rectangular joint portion 314a is formed at the upper end.

[0147] The inner wall surface of the inlet passage 314 is formed with a ridge 314b. The ridge 314b allows water dripping from the joint portion 314a to flow to the damper member 430 (see Fig.10 )’s location.

[0148] In addition, on the plate portion 311a, the damper member 410 (refer to Fig.10 ) and the damper member 420 (reference Fig.10 ) form a water guide ridge 311q. The water guide ridge 311q is located at the installation of the damper component 420 (reference Fig.10 ) near the upper part of the cylindrical ridge 318 of the damper member 420. In addition, the water guide ridge 311q is formed in a straight line and is formed in a manner of descending from the left side to the right side. In addition, the height of the water guide ridge 311q is configured to be higher than the abutment portion 312d. Thus, it is possible to prevent water drops dripping from the upper side of the damper member 420 from flowing toward the second baffle 422 of the second switching chamber of the damper member 420.

[0149] In addition, in the front box 310, bolt insertion portions 311f and 311g for bolt insertion are formed at the upper and central portions of the plate portion 311a in the vertical direction. In addition, in the front box 310, a threaded boss 311h for screwing and fixing is formed at the lower portion of the plate portion 311a in the vertical direction. Since the second fan 9b and the openings 312a and 312b opened and closed by the baffle are installed on the damper duct component 300, an air path can be formed with a small number of components. Thus, leakage and loss of circulating cold air can be reduced. Since openings are respectively provided on two or more different sides relative to the second fan 9b, the length of the air path from the second fan 9b to the openings of each storage chamber can also be shortened.

[0150] Fig.13 It is a perspective view showing the inner side of the rear case of the damper duct member.

[0151] like Fig.13 As shown, the rear box 320 and the front box 310 (reference Fig.11) is similarly formed into a substantially L-shape, and has a plate portion 321a disposed at a position opposite to the plate portion 311a. In addition, an outer peripheral edge portion 321b corresponding to the outer peripheral edge portion 311b of the front box body 310 is formed upright on the plate portion 321a. Furthermore, a ridge 321b1 protruding forward is formed at the front end of the outer peripheral edge portion 321b.

[0152] In addition, a channel for introducing the second evaporator 14b (reference Figure 2 ) is a circular inlet hole 321c for introducing the cold air generated by the ice making chamber 3 and the freezing chamber 4 (refer to Figure 3 The width of the introduction passage 321d becomes narrower as it goes upward, and a joint portion 314a (reference Fig.11 )The interlocking joint portion 321e is interlocked.

[0153] In addition, on the rear box body 320, at the bolt insertion portion 311f (reference Fig.11 ) is formed at a position corresponding to the threaded boss 321f. In addition, on the rear box body 320, at a position corresponding to the threaded boss 311h (reference Fig.11 ) is formed with a bolt insertion portion 321h at a position corresponding to the plate portion 321a. In addition, on the rear box body 320, the recessed portion 340 is formed inwardly from the plate portion 321a to form a protrusion. A bolt insertion hole 340a is formed at the front end of the recessed portion 340.

[0154] The front box body 310 and the rear box body 320 formed in this way are connected by making the outer peripheral edge portion 311b (refer to Fig.11 ) is in contact with the outer peripheral edge portion 321b, and the edge 311b1 (reference Fig.11 By combining the front housing 310 and the rear housing 320 in this way, it is possible to effectively suppress the leakage of cold air from the damper duct member 300 to the outside.

[0155] Fig.14 yes Fig.10 XIV direction view. In addition, Fig.14 The lines W1, W2, and W3 are omitted in the figure.

[0156] like Fig.14 As shown, a damper component 430 is mounted on the freezer damper fixing portion 313 formed on the plate portion 311a of the front box body 310 (see Fig.10 That is, the freezing chamber damper fixing portion 313 has a square frame-shaped fixing plate 313a, and the damper member 430 is fixed to the fixing plate 313a. In addition, reinforcing members 313e, 313e are formed on the fixing plate 313a.

[0157] Lines W1 to W3 are formed at the corners of the fixing plate 313a (see Fig.10 ) through a C-shaped cutout 313s. The connector 314a has wires W1 to W3 (see Fig.10 ) through the incision 313u.

[0158] In addition, the fixing plate 313a is formed to be more protruding than the height of the outer peripheral edge portion 311b of the front box body 310 (the front end of the ridge 311b1). In addition, bolt insertion portions (fixing portions) 313g and 313h for fixing the damper component 430 are formed on the fixing plate 313a. The bolts 270a and 270b inserted in the bolt insertion portions 313g and 313h are formed at positions that do not overlap with the outer peripheral edge portion 311b in the top view. In other words, the bolts 270a and 270b are formed at positions that do not overlap with the outer peripheral edge portion 311b in the vertical direction in the axial direction. As a result, when the damper component 430 is installed on the front box body 310, the damper component 430 can be easily installed on the front box body 310.

[0159] The bolt 270a of the bolt insertion portion 313g and the bolt 270b of the bolt insertion portion 313h are located in the damper member 430 (see Fig.10 ) diagonally. Thus, when the damper member 430 is fixed to the fixing plate 313a, the damper member 430 can be stably mounted without floating relative to the fixing plate 313a.

[0160] Fig.15 This is a perspective view of the damper member as viewed from the front.

[0161] like Fig.15 As shown, the driving unit 413 has a box (housing unit) 413a in a square box shape. The box 413a has a front surface 414a, a rear surface 414b, a left side surface 414c, a right side surface 414d, a bottom surface 414e, and a top surface 414f.

[0162] The box 413a accommodates driving components DM (see FIG. 1 ) such as a motor M and a gear component G described later. Fig.17 ). In addition, the box 413a is arranged in a space different from the first switching chamber 5 and the second switching chamber 6 as storage chambers, that is, in a space in the damper duct member 300 as a discharge duct. Cold air having a temperature of about the second evaporator 14b flows in the space in the damper duct member 300.

[0163] The damper member 410 is provided with a first switching chamber first damper 411 and a first switching chamber second damper 412 driven by a driving unit 413. In addition, the damper member 410 is provided with screw fixing portions 413d, 413e, and 413f for screw fixing.

[0164] The first switch chamber first damper 411 is configured to rotate backward along the bottom surface 414e of the box 413a, and the first switch chamber second damper 412 is configured to rotate backward along the top surface 414f of the box 413a.

[0165] The first switch chamber first baffle 411 has a base material 411a made of synthetic resin (refer to Fig.16 ), and a silicone rubber sealing member 411b coated on the front of the base material 411a. The first switching chamber second baffle 412 has a base material 412a made of synthetic resin (refer to Fig.16 ), and a sealing member 412b made of silicone rubber covering the front of the substrate 412a.

[0166] The sealing member 411b is in the shape of a generally long rectangle, and has a shape in which the corners P10 at the four corners have rounded corners (R) in the circumferential direction. In addition, the sealing member 411b has a shape in which a central portion 411b1 and a peripheral portion 411b2 are formed in a raised manner, and a recess 411b3 is formed therebetween. In addition, the position where the opening 312a abuts against the sealing member 411b is between the peripheral portion 411b2 and the recess 411b3. In addition, the rounded corners (R) of each corner P10 have the same curvature. For example, by setting the ratio of the rounded corner (R) of one corner relative to the full width W of the sealing member 411b (the length on one dimension S10) to 19% or more, the sealing performance between the opening 312a and the sealing member 411b can be improved.

[0167] Here, the sealing performance of the baffle will be described.

[0168] Fig.25 This is the distribution of strain of the sealing member 411 b when the first switching chamber first damper 411 abuts against the abutment portion 312 c and performs sealing. Fig.26 : is a vector diagram of the tensile direction of the corner portion 501 of the sealing member 411b.

[0169] The sealing member 411b has corner portions 501 corresponding to the rounded corner (R) portion and straight portions 502 corresponding to the portion extending linearly in the dimension W on the edges in each direction (referred to as each side for convenience). The sealing member 411b is rectangular in the present embodiment, so it also has four straight portions 502 and four corner portions 501 on the long side. The overall size of the long side can be set to, for example, 100% or more and 140% or less of the overall size of the short side (the size of the corner portion 501 + the size of the straight portion 502). When considering the air duct applied to the refrigerator, it can be preferably set to between 110% and 140%, or 115% and 130%.

[0170] Fig.25In the figure, the black region has less strain, and the seal member 411b and the contact portion 312c have high adhesion. As can be seen from the figure, the adhesion is relatively weak near the corner portion 501.

[0171] Study this phenomenon. Fig. 27 The diagram shows an initial sealing position 503 of the edge of the sealing member 411b where the first switching chamber first damper 411 abuts against the abutment portion 312c and starts sealing, and a deformed sealing position 504 of the edge of the sealing member 411b where the sealing performance is improved after close contact.

[0172] About the dimension S of the straight portion 502, because the difference between the dimension S1 during the initial sealing position 503 and the dimension S2 during the deformed rear sealing position 504 is small or does not exist, the strain during sealing is small. On the other hand, about the dimension R of the corner portion 501 of the sealing component 411b, the change of the dimension R2 during the dimension R1 during the initial sealing position 503 to the deformed rear sealing position 504 is larger than the straight portion 502, and stretching will occur, and the strain is large. That is, the closer to the straight line, the more the strain is reduced. It can be inferred that if the curvature of the corner portion 501 is reduced, the sealing property will improve.

[0173] Four examples are given to confirm this point. Figures 28A to 28D The diagram shows four shapes of the first switching chamber first damper 411 and evaluates the close contact of the sealing member 411 b when the sealing member 411 b contacts and seals the contact portion 312 c . Fig.28A This indicates a case where the ratio (S10) of the rounded corner (R) of one corner relative to the full width W of the short side of the sealing member 411b is 19%. Fig.28B This means that 23% of the cases Fig.28C This means that 31% of the cases Fig.28D The case of 39% is shown. In each case, the size of the straight portion 502 is equal. Therefore, it is shown that the larger the ratio (S10), the smaller the curvature. Figures 28A to 28D The value of R in is the actual fillet (R) size. It is confirmed that the larger the fillet (R) ratio (S10), the better the sealing performance. As a method for this confirmation, it can be performed by simulating or measuring the distribution of strain, or by flowing colored smoke or the like while the sealing member 411b and the abutting portion 312c are in close contact with each other and measuring the leakage amount.

[0174] Fig.29 The ratio of the fillet (R) is the horizontal axis, the opening area of ​​the baffle 411 is the vertical axis, and the Figures 28A to 28D The figure shows the sealing performance (×, △, ○, ◎) confirmed in the test. Among them, "◎" means "excellent", "○" means "good", "△" means "acceptable", and "×" means "no".

[0175] The cross-sectional shape of the conduit on which the baffle 411 used in the refrigerator is set is usually close to a rectangle, so when considering the applicability to the refrigerator, it is preferred that the size of the straight portion 502 is larger than the size of the corner portion 501 occupied on one side, that is, the ratio (S10) of the rounded corner (R) is smaller. In this case, the opening area can also be increased under the condition that the size of one side is the same. However, in this case, as described above, the sealing is relatively low. On the other hand, the opening area cannot be ensured when pursuing sealing.

[0176] In this regard, according to Fig.29 As can be seen from the figure, when the ratio (S10) of the rounded corners (R) exceeds 31%, the decrease in the opening area is accelerated, but on the other hand, the improvement in the sealing performance is sufficient. In addition, when the ratio (S10) of the rounded corners (R) is less than 19%, the increase in the opening area is slow, but on the other hand, it is difficult to apply to refrigerators in terms of sealing performance.

[0177] Therefore, the fillet (R) ratio (S10) is preferably 19% or more, more preferably 23% or more, or 31% or more from the viewpoint of sealing performance, and preferably 31% or less, more preferably 23% or less, or 19% or less from the viewpoint of ensuring the opening area.

[0178] Fig.16 This is a perspective view of the damper member as viewed from the rear side.

[0179] like Fig.16 As shown, the damper member 410 has a baffle support portion 413b extending toward the first baffle 411 of the first switching chamber and a baffle support portion 413c extending toward the second baffle 412 of the first switching chamber. The baffle support portion 413b extends downward in the vertical direction (upward and downward direction) from the bottom surface 414e of the box 413a. The baffle support portion 413c extends upward in the vertical direction (upward and downward direction) from the top surface 414f of the box 413a. The first baffle 411 of the first switching chamber is mounted on the baffle support portion 413b. The second baffle 412 of the first switching chamber is mounted on the baffle support portion 413c.

[0180] A baffle support cover 415 (covering portion) covering the outer side of the baffle support 413c is formed on the box 413a. The baffle support cover 415 has a front portion 415a covering the front surface side of the baffle support 413c, a side portion 415b covering the right side (the side opposite to the first switching chamber second baffle 412 in the left-right direction), and a top portion 415c covering the top side. In this way, the baffle support cover 415 is formed on the surface (except the rear and left sides) outside the rotation range of the first switching chamber second baffle 412. In addition, a screw fixing portion 413e is integrally formed on the baffle support cover 415. By providing such a baffle support cover 415, it is difficult for water to drip on the baffle support 413c.

[0181] The box 413a is provided with a support member 415d that rotatably holds the first switch chamber first damper 411. The support member 415d is formed to extend downward from the bottom surface 414e of the box 413a. A screw fixing portion 413d is integrally formed at the lower end of the support member 415d.

[0182] The baffle support portion 413c is formed of a rod-shaped (shaft-shaped) member and is formed to protrude vertically upward from the top surface 414f of the box 413a. In addition, the baffle support portion 413c is formed with an umbrella portion 416 that protrudes radially outward.

[0183] In the box 413a, a connector 418 is formed to be exposed to the outside of the box 413a. The connector 418 is formed in such a way that the terminal 418a (connection terminal) protrudes downward. In addition, the connector 418 has a shape (space) in which the corner of the box 413a is cut off to form a triangle shape in a plan view, and protrudes downward from its top surface (top surface) 414r. That is, the terminal 418a of the connector 418 is formed to face downward from the box 413a.

[0184] A guide rib 417 is formed on the rear surface 414b (the surface opposite to the first switch chamber 5) of the box 413a so as to slope downward from the left side to the right side. The upper end of the guide rib 417 is located above the space where the connector 418 is installed.

[0185] A hook 419a is formed on the left side surface 414c of the box 413a to hook a wire (not shown) extending from the connector 418. Wire fixing portions 419b and 419c are integrally formed on the support member 415d to fix the wire extending from the hook 419a.

[0186] Fig.17 It is an exploded perspective view of the damper components.

[0187] like Fig.17As shown, the damper component 410 includes a first switch chamber first baffle 411, a first switch chamber second baffle 412, and a drive unit 413 (see Fig.16 ).

[0188] The first switch chamber first baffle 411 has a base material 411a made of synthetic resin. Claws 411c are formed protrudingly at multiple locations on the base material 411a. The first switch chamber first baffle 411 holds the sealing member 411b on the base material 411a by inserting the claws 411c into holes formed in the sealing member 411b.

[0189] In addition, arm portions 411d and 411d are formed on the base material 411a. The arm portion 411d protrudes laterally from the base material 411a and is separated into upper and lower parts. A baffle support portion 413b is provided on the upper arm portion 411d. The baffle support portion 413b is connected and fixed to the shaft portion g2 described later.

[0190] The first switching chamber second baffle 412 has a base material 412a made of synthetic resin. Claws 412c are formed protrudingly at multiple locations on the base material 412a. The first switching chamber second baffle 412 holds the sealing member 412b on the base material 412a by inserting the claws 412c into holes formed in the sealing member 412b.

[0191] In addition, an arm portion 412d is formed on the substrate 412a so as to protrude laterally. The arm portion 412d is fixed to the baffle support portion 413c. The baffle support portion 413c has a shaft portion 413k extending in the vertical direction, and an umbrella portion 416 having a larger diameter than the shaft portion 413k is formed at the lower portion of the shaft portion 413k (lower side than the arm portion 412d).

[0192] The box 413a is composed of a box body 413A having an opening 414o formed on the top surface and a cover member 413B that closes the opening 414o.

[0193] The box body 413A has a front surface 414a (refer to Fig.15 ), rear surface 414b, left side surface 414c, right side surface 414d and bottom surface 414e (reference Fig.15 ). In addition, the housing body 413A contains a driving member DM having a motor M with a pinion PG mounted thereon and a gear member G connected to the pinion PG. The gear member G has a shaft g1 connected to the baffle support 413c and a shaft g2 connected to the baffle support 413b.

[0194] In the driving unit 413, the driving mechanism in the box 413a is configured so that the first switch chamber first damper 411 and the first switch chamber second damper 412 can be opened and closed independently. That is, the driving unit 413 is configured so that the first switch chamber first damper 411 and the first switch chamber second damper 412 can be closed, or the first switch chamber first damper 411 and the first switch chamber second damper 412 can be opened. In addition, the driving unit 413 is configured so that the first switch chamber first damper 411 can be opened and the first switch chamber second damper 412 can be closed, and the first switch chamber first damper 411 can be closed and the first switch chamber second damper 412 can be opened.

[0195] The support member 415d is formed by combining the plate members 415e and 415f which are elongated in the vertical direction into an L-shape. The support member 415d has connection parts 415g and 415g connected to the arm parts 411d and 411d formed inside.

[0196] The box body 413A has fixing portions 414j, 414k, and 414m formed therein for fitting and fixing the screw bosses 414g, 414h, and 414i described later. The fixing portions 414j, 414k, and 414m are formed by recessing the corners of the box body 413A inward.

[0197] In addition, the guide rib 417 has a function of guiding the water flowing to the rear 414b to the lower part of the box body 413A. In addition, the guide rib 417 is inclined in a manner of descending from the left side 414c to the right side 414d. In addition, the upper end of the guide rib 417 is located at the upper end of the left end of the rear 414b. In addition, the lower end of the guide rib 417 is located at the center of the right end of the rear 414b in the up-down direction. In addition, the lower end of the guide rib 417 is configured in a manner of being continuously formed with the fixing portion 414j. In addition, the upper end side of the guide rib 417 is located above the side where the connector 418 is provided. In addition, the lower end side of the guide rib 417 is located on the side where the connector 418 is not provided.

[0198] By providing such guide ribs 417, water dripping from the top surface 414f of the box 413a to the rear surface 414b flows downward along the guide ribs 417, and drips downward through the side of the damper member 410. In addition, since the inclination angle of the guide ribs 417 is formed to be gentle, water does not fall off in the middle of the guide ribs 417. In addition, the shape and inclination angle of the guide ribs 417 can be appropriately set.

[0199] In addition, the guide rib 417 is provided on the side (rear surface 414b) where the connector 418 is provided, so that water can be prevented from flowing into the top surface 414r (refer to Fig.16). In addition, as will be described later, since the damper member 410 is arranged in a manner that the top surface 414f descends toward the rear, water dripping from the top surface 414f flows toward the rear surface 414b. Therefore, by providing the guide rib 417 only at the rear surface 414b, it is possible to suppress water dripping on the connector 418.

[0200] The cover member 413B has a rectangular flat top surface 414f, and screw bosses 414g, 414h, and 414i are formed at the corners of the top surface 414f and protrude vertically downward. Fig.17 In the figure, a state where three threaded bosses 414g, 414h, and 414i are formed is shown, but similar threaded bosses are also formed at the remaining corners. Screw holes are formed downward in the vertical direction on the threaded bosses 414g, 414h, and 414i.

[0201] In addition, the threaded bosses 414g, 414h, 414i are fitted from above to the fixing parts 414j, 414k, 414m of the box body 413A. Bolt insertion holes for inserting the bolts 280 are formed through the fixing parts 414j, 414k, 414m. The bolts 280 are inserted from below into the bolt insertion holes and then screwed into the threaded bosses 414g, 414h, 414i of the cover member 413B.

[0202] In addition, a shaft hole 413j is formed on the top surface 414f of the cover member 413B, through which the shaft g1 of the gear member G protrudes. The shaft hole 413j is located at the front and right corner. In addition, the shutter support cover 415 is integrally formed on the cover member 413B.

[0203] Fig.18 This is a side view of the damper component for the switching chamber.

[0204] like Fig.18 As shown, the front surface 414a of the driving part 413 is configured to be substantially on the same plane as the front surface of the first switching chamber second damper 412. In addition, the front surface of the first switching chamber first damper 411 is located slightly behind the front surface 414a of the driving part 413.

[0205] The screw boss 414h at the position where the connector 418 is provided is formed to have a shorter length in the vertical direction than the other screw boss 414i.

[0206] The umbrella part 416 is configured to have a larger diameter than the shaft part 413k. By providing such an umbrella part 416, even in a structure where a gap is formed between the shaft hole 413j and the shaft part 413k, it is possible to suppress the situation where water enters through the gap.

[0207] In addition, the umbrella portion 416 is located above the top surface 414f. In addition, the umbrella portion 416 is located at a height substantially the same as the lower end of the second baffle 412 of the first switching chamber. In addition, the umbrella portion 416 has an inclined surface 416a that descends from the center of the shaft toward the outer peripheral side. As a result, water does not accumulate on the inclined surface 416a, and the water can flow toward the top surface 414f. In addition, because the water flows radially outward, it is difficult for water to enter the gap between the shaft portion 413k and the shaft hole 413j.

[0208] Fig.19 yes Fig.18 XIX-XIX line cross-sectional view.

[0209] like Fig.19 As shown, the corners (edges) of the box 413a are formed with rounded corners (R). The curvature of the corners P3 and P4 of the lower part of the box 413a is formed to be smaller. On the other hand, the curvature of the corners P1 and P2 of the upper part of the box 413a is formed to be larger than the curvature of the corners P3 and P4.

[0210] Thus, by increasing the rounded corners (R) of the top surface 414f of the box 413a, it is easy to make the water attached to the top surface 414f retreat to the left side 414c or the right side 414d. As a result, it is possible to prevent the water from accumulating and freezing on the top surface 414f, thereby preventing the opening and closing action of the second damper 412 of the first switching chamber from being hindered.

[0211] Although not shown in the figure, the corners of the box 413a in the front-rear direction are also Fig.19 Similarly, the rounded corners (R) of the front and rear corners of the upper part are configured to be larger than the rounded corners (R) of the front and rear corners of the lower part. Therefore, water attached to the top surface 414f is easy to flow to the back surface 414b, and the problem of water freezing on the top surface 414f can be suppressed. In addition, the water flowing to the back surface 414b drips downward along the back surface 414b due to the above-mentioned guide ribs 417, and the water does not accumulate on the box 413a.

[0212] Fig. 20 It is a front view of the insulation partition duct plate.

[0213] like Fig. 20 As shown in FIG. 1 , the heat-insulating partition duct plate 400 uses bolts 250a and 250b to fix the heat-insulating partition wall 27 and the damper duct member 300 to each other from the side of the front panel 210 facing the inside of the box. At this time, the bolts 250a and 250b are set near the cylindrical edge 315. As a result, the sealing member 240 (refer to FIG. 2 ) provided between the cylindrical edge 315 and the front panel 210 for preventing cold air leakage can be fixed to the heat-insulating partition wall 27 and the damper duct member 300. Fig. 22 , Fig.23 )’s tightness increases.

[0214] The outlet forming member 111 is fixed to the front panel 210 via bolts 250c. The outlet forming member 112 is fixed to the front panel 210 via bolts 250d. The front panel 210 is connected to the threaded boss 310e (see FIG. 250e ) of the damper duct member 300 via bolts 250e. Fig. 9 )fixed.

[0215] Thus, since the bolt 250a is covered by the outlet forming member 111, water attached to the front panel 210 is unlikely to enter the periphery of the bolt 250a. In addition, since the bolt 250b is located in the groove 216, water is unlikely to enter the bolt 250b.

[0216] In addition, a cover member (not shown) is installed after being screwed and fixed at the position where the bolts 250a, 250b, 250c, 250d, and 250e are provided, thereby improving the appearance and preventing water from entering through the gaps between the bolts 250a, 250b, 250c, 250d, and 250e.

[0217] Fig.21 yes Fig. 20 Cross-sectional view of line XXI-XXI.

[0218] like Fig.21 As shown, the damper member 410 is screwed together with the fixing portions 413d, 413e, and 413f (see Fig.15 ) is fixed to the front housing 310. In addition to the fastening and screwing by bolts, the damper member 410 can also be fixed to the front housing 310 while applying force or pushing it. In this way, the closeness between the damper member 410 and the front housing 310 and the parallelism of the baffle relative to the front housing 310, which also functions as the abutment portion of the baffle, can be improved, and the airtightness when the baffle is closed can be easily ensured. In addition, the damper member 420 is also screwed and fixed to the front housing 310 in the same manner as the damper member 410.

[0219] The heat insulating partition wall 27 and the damper duct member 300 are fixed to each other at the top via bolts 250a. That is, the recessed portion 217a of the front panel 210 is formed in the through hole 238a (refer to Fig. 22 ) and inserted into the through hole 237a (reference Fig. 22 ). On the other hand, the threaded boss 310c is inserted into the through hole 237a from the opposite side. Then, the recessed portion 217a and the threaded boss 310c are in contact with each other. Then, the bolt 250a is inserted into the recessed portion 217a, and after being inserted into the bolt insertion hole 217c, it is screwed with the threaded boss 310c. In this way, the heat insulation partition wall 27 and the damper duct component 300 are fixed to each other.

[0220] In addition, the screw boss 226 formed protrudingly on the back side of the rear panel 220 is inserted into the recessed portion 330 of the front box body 310. In addition, the recessed portion 330 is in contact with the recessed portion 340 formed on the rear box body 320. Then, the bolt 260 is inserted from the side (rear side) of the recessed portion 340 and is inserted into the bolt insertion hole 340a (refer to Fig.13 Then, the bolt 260 is inserted into the bolt insertion hole (refer to Fig.11 ) and then screwed into the threaded boss 226.

[0221] Thus, the heat insulating partition wall 27 is screwed and fixed to the damper duct member 300. By mounting the damper members 410 and 420 (preferably by screwing) on ​​the damper duct member 300 which is easy to attach and detach, the assemblability can be improved compared with the conventional damper assembly for large heat insulating partition walls and damper duct members.

[0222] Fig. 22 yes Fig.21 Enlarged view of part A.

[0223] like Fig. 22 As shown, the front box body 310 has a plate portion 310a having the above-mentioned surface 312s. The surface (mounting surface) 312s of the plate portion 310a is inclined in a manner that it is located forward as it moves from the upper side to the lower side relative to the up-down direction (vertical direction, gravity direction). Fig.21 ) is installed at an inclination relative to the horizontal, so it is easy to drain the moisture attached to the top surface 414f of the box 413a.

[0224] The plate portion 310a is integrally formed with cylindrical ridges 315 and 316 (ridges) by resin molding. The cylindrical ridges 315 and 316 extend forward from the edge of the opening 312a (inside the box and in contact with the first switch chamber first baffle 411 (reference Fig.21 ) is formed to extend on the opposite side of the baffle. This can reduce deformation caused by contact with the baffle, making it easier to ensure the airtightness of the baffle.

[0225] In the cylindrical rib 315, the lower inner wall surface 315a is inclined (angle α) in a downward direction toward the front (inside the box) relative to the horizontal plane (horizontal line) Hp. This makes it easy to drain even if water droplets adhere. In addition, in the cylindrical rib 315, the upper inner wall surface 315b is formed along a substantially horizontal direction.

[0226] In addition, on the plate portion 310a, a first baffle 411 (see Fig. 9) side. The contact portion 312c is formed convexly toward the first baffle 411 of the first switching chamber relative to the reference surface 312s. In addition, on the front surface of the contact portion 312c, a hollow portion 312c1 is formed along the contact portion 312c, which is concave in a cross-sectional view. In addition, in this embodiment, the top edge portion 312t, left and right side edges 312u, 312u (reference Fig.12 ) is to the first baffle 411 of the first switching chamber (reference Fig.21 ) is formed convexly on one side. In addition, a hollow portion (not shown) that is concave in the same cross-sectional view as described above is also formed on the top edge portion 312t and the left and right side edges 312u, 312u. In addition, relative to the reference surface 312s, the bottom edge portion 312v is not formed to protrude toward the first baffle 411 of the first switching chamber. In this way, the strength of the abutment portion 312c abutted by the first baffle 411 of the first switching chamber can be improved, thereby preventing deformation caused by the abutment of the baffle. By making the strength higher, the sealing component 411b made of silicone rubber between the abutment portion 312c and the first baffle 411 of the first switching chamber can be improved (refer to Fig.10 ) between them.

[0227] In addition, in this embodiment, the case where the edge of the opening 312a is formed in a convex shape is taken as an example for description, but the present invention is not limited to such a structure, and the shape may be a thick portion formed in a manner of increasing thickness instead of a convex shape.

[0228] In addition, regarding the cylindrical edge 316, similarly to the above, the lower inner wall surface 316a is inclined (angle β) in a manner descending forward (inside the box) relative to the horizontal plane (horizontal line) Hp. In addition, in the cylindrical edge 316, the upper inner wall surface 316b is formed along a substantially horizontal direction.

[0229] In addition, on the plate portion 310a, a second baffle 412 (see Fig.21 ) side. The abutment portion 312d (convex portion) is a portion that protrudes toward the first switching chamber second damper 412 (reference surface) relative to the reference surface 312s. Fig. 9 ) is formed convexly on one side. In addition, on the front surface of the abutting portion 312d, a hollow portion 312d1 is formed along the abutting portion 312d, which is concave in a cross-sectional view. In addition, in this embodiment, the top side 312w, the bottom side 312x, the left and right side sides 312y, 312y (refer to Fig.12 ) is formed in a convex shape toward the first switching chamber second damper 412. That is, the abutment portion 312d is formed in a manner that the entire edge of the opening 312b is convex.

[0230] In addition, in this embodiment, the edge of the opening 312b is convex as an example, but the present invention is not limited to such a structure, and the edge of the opening 312b may be formed in a thicker portion with increased thickness instead of a convex shape. This can suppress deformation when the baffle abuts.

[0231] In addition, if Fig. 22 As shown, the first switch chamber first baffle 411 is in a state where the opening 312a is fully closed, and the outer peripheral surface of the sealing component 411b abuts against the abutment portion 312c of the edge of the opening 312a, so that the opening 312a is sealed. In addition, the first switch chamber second baffle 412 is also in a similar state, and the outer peripheral surface of the sealing component 412b abuts against the abutment portion 312d of the edge of the opening 312b, so that the opening 312b is sealed.

[0232] In the heat-insulating partition wall 27, the cylindrical rib 315 is installed by abutting against the edge of the opening 222 of the rear panel 220, the cutout 232A of the first foam heat-insulating material 230A, the cutout 232B of the second foam heat-insulating material 230B, and the opening 214 of the front panel 210. This can prevent the cold air from leaking into, for example, an unexpected gap between the rear panel 220, the first foam heat-insulating material 230A, the second foam heat-insulating material 230B, and the front panel 210, and leaking to an unexpected location. The cylindrical rib 315 also functions as a shielding portion that shields the gaps on the two opening sides.

[0233] In addition, a sealing member 240 is provided between the cylindrical rib 315 and the front panel 210 to suppress leakage of cold air. In addition, the sealing member 240 is a sheet member made of soft polyurethane, for example.

[0234] The first switching chamber first damper 411 is attached to the front housing 310 in a state tilted relative to the vertical direction (up-down direction). In other words, the first switching chamber first damper 411 is tilted so that the lower side is located in front of the upper side.

[0235] In addition, the front surface 414a of the box 413a (refer to Fig.18 ) and the surface 312s of the first switching chamber damper fixing portion 312A are in surface contact with each other without forming a gap. In addition, by arranging the first baffle 411 of the first switching chamber at an angle, the top surface 414f of the box 413a is arranged in an inclined state. That is, the top surface 414f is inclined in a manner that descends toward the rear side. Because it is a place where low-temperature cold air passes, ice is generated when water accumulates on the top surface 414f, and the opening and closing action of the second baffle 412 of the first switching chamber becomes difficult. Therefore, by arranging the damper component 410 at an angle and tilting the box 413a, it is possible to suppress the accumulation of water on the top surface 414f.

[0236] In addition, on the rear surface 414b (refer to Fig.16 ) is formed with a guide rib 417. Thus, even if water flowing on the inclined top surface 414f flows to the rear surface 414b, it will drip to the side (the right side 414d side) due to the guide rib 417. Therefore, it is possible to suppress the situation where water drops on the connector 418 side.

[0237] In addition, although not shown in the figure, a heater may be provided near the first baffle plate 411 of the first switching chamber on the outer surface of the front box body 310. In addition, a heater may be provided near the second baffle plate 412 of the first switching chamber on the outer surface of the front box body 310. In addition, the heater is obtained by covering the heat conducting wire with an aluminum sheet and setting it to an appropriate size, for example. In addition, the heater may also be provided directly on the first baffle plate 411 of the first switching chamber.

[0238] Fig.23 yes Fig.21 Enlarged view of part B.

[0239] like Fig.23 As shown, the heat insulating partition wall 27 and the damper duct member 300 are fixed to each other at the bottom via the bolt 250b. That is, the recessed portion 217b of the front panel 210 is inserted into the through hole 238b of the second foam insulation material 230B. On the other hand, the threaded boss 310d is inserted into the through hole 237a. Then, the recessed portion 217b and the threaded boss 310d are abutted. Then, the bolt 250b is inserted into the recessed portion 217b, and after being inserted into the bolt insertion hole 217d, it is screwed with the threaded boss 310d. In this way, the heat insulating partition wall 27 and the damper duct member 300 are fixed to each other.

[0240] The damper member 420 is fixed to the heat insulating partition wall 27 in the same manner as the damper member 410. In addition, the damper member 420 is similar to the damper member 410, and the front end (front end) of the cylindrical rib 317 abuts against the peripheral edge of the opening of the heat insulating partition wall 27 via the sealing member 240, thereby ensuring the airtightness between the damper duct member 300 and the heat insulating partition wall 27, and effectively suppressing the leakage of cold air from the damper member 420 into the box (heat insulating partition wall 27).

[0241] In addition, in the damper duct member 300, the lower inner wall surface 315a of the cylindrical ridge 317 is inclined so as to descend toward the front in order to prevent freezing. Normally, when the front box body 310 is resin-molded, a mold that moves in the front-back direction (S100, S200) is prepared, but in this embodiment, the front box body 310 is manufactured using a sliding mold that moves further downward (S300). In addition, regarding the cylindrical ridge 318, since the inclined length is short, it is not necessary to use the above-mentioned sliding mold.

[0242] Fig.24It is a cross-sectional view of the first switch chamber damper fixing portion.

[0243] like Fig.24 As shown, in the first switching chamber damper fixing portion 312A, an inclined surface 312f is formed below the damper component 410. The inclined surface 312f is inclined in a manner of descending toward the rear. In addition, at the lower end of the inclined surface 312f, a protrusion 311p is formed toward the rear. The protrusion 311p is formed on the same plane as the top surface and the surface of the inclined surface 312f, and is formed to be straight in a cross-sectional view. In addition, the protrusion 311p is formed to protrude toward the rear compared to the plate portion 311a. In addition, a surface heater H12 is provided on the surface of the plate portion 311a. In the surface heater H12, the heat conductive wire h1 is covered by the aluminum sheet h2. Therefore, a bonding surface M1 between the aluminum sheet h2 and the plate portion 311a is formed at the upper end of the surface heater H12. There is a risk that water enters the surface heater H12 from the bonding surface M1. Therefore, in this embodiment, by providing the protrusion 311p, it is possible to suppress the water dripping from the inclined surface 312f from entering the bonding surface M1.

[0244] As described above, the refrigerator 1 of the present embodiment includes the second evaporator chamber 8b accommodating the second evaporator 14b and the damper members 410 and 420 for opening and closing the opening 312b provided between the second evaporator chamber 8b and the first switching chamber 5 (the second switching chamber 6). The damper members 410 and 420 include the first switching chamber second baffle 412 (the second switching chamber second baffle 422) provided to be able to contact and separate from the opening 312b, the driving part 413 for driving the first switching chamber second baffle 412 (the second switching chamber second baffle 422) to rotate, and the baffle support part 413c protruding upward on the top surface 414f of the driving part 413 and supporting the first switching chamber second baffle 412 (the second switching chamber second baffle 422). The baffle support part 413c includes an umbrella part 416 having a larger diameter than the shaft part 413k of the baffle support part 413c. This can prevent water dripping from above through the baffle support portion 413 c from entering the gap between the drive portion 413 and the baffle support portion 413 c.

[0245] In addition, in this embodiment, the driving unit 413 includes a box 413a for accommodating the driving member DM, and a connector 418 provided on the outer surface of the box 413a and connected to the driving member DM. The connecting terminal of the connector 418 is arranged to face downward in the vertical direction relative to the box 413a. Thus, water dripping into the box 413a can be prevented from dripping onto the connector 418.

[0246] In addition, in this embodiment, the box 413a has a top surface 414f on which the shaft portion 413k is protrudingly formed and a rear surface 414b extending downward from the outer peripheral edge of the top surface 414f. On the rear surface 414b, a guide ridge 417 for guiding water is formed from the upper part to the lower part along the rear surface 414b. This can prevent water flowing from the top surface 414f to the surroundings from flowing into the vicinity of the connector 418.

[0247] In addition, in the present embodiment, the damper members 410 and 420 are arranged with the top surface 414f inclined, thereby preventing water from accumulating on the top surface 414f of the box 413a and preventing malfunctions in the opening and closing operation of the first switching chamber second damper 412 (second switching chamber second damper 422) due to freezing.

[0248] In addition, in the present embodiment, the box 413a has a box body 413A having an opening 414o opened upward and accommodating the driving member DM, and a cover member 413B closing the opening 414o. The box body 413A and the cover member 413B are fixed via bolts 280. In the box body 413A, the screw holes into which the bolts 280 are inserted are formed downward. Thus, it is possible to prevent water from entering the box 413a through the gap between the bolts 280.

[0249] In addition, in the present embodiment, the box 413a is formed so that the curvature of the corners P1 and P2 of the top surface 414f is greater than the curvature of the corners P3 and P4 of the bottom surface 414e of the box 413a. Thus, water flowing to the top surface 414f tends to flow to the side surfaces (the front surface 414a, the rear surface 414b, the left side surface 414c, and the right side surface 414d), and the accumulation of water on the top surface 414f can be suppressed.

[0250] In this embodiment, the box 413a has a baffle support cover 415 covering the side and top surfaces except for the operating range of the first switching chamber second baffle 412 (second switching chamber second baffle 422). This can prevent water from dripping from the upper part to the baffle support 413c.

[0251] In addition, in the present embodiment, a water guide ridge is formed between the damper members 410 and 420, which are arranged vertically at intervals in the upper and lower directions, so as to guide water from the upper part to the side of the damper member 420. Thus, it is possible to suppress water from dripping on the damper member 420 at the lower part.

[0252] The present embodiment has been described above with reference to the accompanying drawings, but the present embodiment is not limited to the above contents and includes various modified examples. For example, a ridge may be formed protruding from the top surface 414f around the shaft hole 413j in the damper member 410. This can prevent water from entering the shaft hole 413j.

[0253] This application includes the following technical ideas.

[0254] [Appendix 1-1]

[0255] A refrigerator, characterized by comprising:

[0256] A cooler room housing the coolers; and

[0257] a damper duct member for guiding the cold air from the cooler chamber,

[0258] The discharge conduit is mounted by screwing.

[0259] [Appendix 1-2]

[0260] The refrigerator as described in Appendix 1-1 is characterized in that it includes:

[0261] a fan for increasing the pressure of the cold air in the cooler chamber;

[0262] a fan motor for driving the fan; and

[0263] The heat-insulating partition duct plate on which the fan motor is mounted,

[0264] The damper duct component is mounted on the heat-insulating partition duct plate by screwing.

[0265] Regarding Appendix 1-1, 1-2, and other parts, the three bolts for fixing the heat insulation partition duct plate 400 and the damper duct member 300 from the front side are indicated by reference numerals 250a, 250b, and 250e ( Fig. 9 , 20 -23, etc.).

[0266] The bolt 250a is inserted into the recessed portion 217a of the front panel 210 and the threaded boss 310c of the front box body 310 (0052, 0147, 0152, Fig. 9 , 22 wait)

[0267] The bolt 250e is inserted into the threaded boss 310e of the front panel 210 to the front box body 310 (0147, 0148, Figure 8 , 9 wait).

[0268] The bolts for fixing the heat insulation partition duct plate 400 and the damper duct member 300 from the rear side are indicated by reference numeral 260 ( Fig. 9 , 21 wait).

[0269] The bolt 260 is inserted through the recessed portion 340 of the rear box body 320, the recessed portion 330 of the front box body, and the threaded boss 226 of the rear panel 220 (0068, 0105, 0153, Fig. 9 , 21 wait).

[0270] [Appendix 1-3]

[0271] The refrigerator as described in Appendix 1-1 is characterized in that:

[0272] having bolts for fixing the heat-insulating partition duct plate and the damper duct component,

[0273] The bolt is arranged near the cylindrical edge of the damper duct component.

[0274] A sealing member is provided at the opening peripheral edge portion of the cylindrical rib and between the cylindrical rib and the front panel of the damper duct member.

[0275] According to Appendix 1-3, the tightness of the sealing member 240 can be increased by tightening the bolts 250a and 250b (0147, Fig. 22 , 23 wait).

[0276] [Appendix 1-4]

[0277] The refrigerator as described in Appendix 1-1 is characterized in that it includes:

[0278] a fan for increasing the pressure of the cold air in the cooler chamber; and

[0279] A rectifying plate disposed on the front box of the damper duct member guides the wind discharged from the fan to the damper,

[0280] The rectifying plate is located in a region near a side surface of a driving portion of the damper and along a flow path direction of the wind.

[0281] According to Appendix 1-4, the side surface 433a of the driving unit and the rectifying plate 311 together constitute a part of the wind path, so that the wind loss can be reduced (0077, Fig.10 , 11 wait).

[0282] In addition, the rectifying plates are preferably arranged in a plurality along the curved edge portion. In addition, the rectifying plates preferably also function as wire fixing members.

[0283] [Appendix 1-5]

[0284] The refrigerator as described in Appendix 1-1 is characterized in that:

[0285] A bolt insertion portion (313g, 313h) is formed on the front housing of the damper duct component.

[0286] The bolts (270a, 270b) inserted into the bolt insertion portion are formed at positions that do not overlap with the front housing (310) when viewed in the insertion direction of the bolts.

[0287] According to Appendix 1-5, when the damper member 430 is mounted on the front housing 310 , the damper member 430 can be easily mounted on the front housing 310 .

[0288] [Appendix 1-6]

[0289] The refrigerator as described in Appendix 1-5 is characterized in that:

[0290] The two bolts inserted through the two bolt insertion portions are located on a diagonal line of a member (the damper member 430 ) to be mounted by the two bolts.

[0291] According to Appendix 1-6, when the damper member 430 is fixed to the fixing plate 313a, the damper member 430 can be stably mounted on the fixing plate 313a without floating (0109, 0110, Fig.11 wait).

[0292] [Appendix 2]

[0293] A refrigerator, comprising:

[0294] a substantially rectangular sealing member having an edge including a substantially linear portion and a substantially arc-shaped corner portion when viewed from the front; and

[0295] a damper capable of moving the sealing member into and out of contact with the opening,

[0296] A ratio of a dimension of the corner portion to a total length of one edge of the sealing member is 19% or more.

[0297] [Appendix 3]

[0298] A refrigerator, comprising:

[0299] a substantially rectangular sealing member having an edge including a substantially linear portion and a substantially arc-shaped corner portion when viewed from the front; and

[0300] a damper capable of moving the sealing member into and out of contact with the opening,

[0301] A ratio of a dimension of the corner portion to a total length of one edge of the sealing member is 31% or less.

[0302] [Appendix 4]

[0303] A refrigerator, comprising:

[0304] a substantially rectangular sealing member having an edge including a substantially linear portion and a substantially arc-shaped corner portion when viewed from the front; and

[0305] a damper capable of moving the sealing member into and out of contact with the opening,

[0306] A ratio of a dimension of the corner portion to a total length of one edge of the sealing member is greater than or equal to 19% and less than or equal to 31%.

[0307] [Appendix 5-1]

[0308] A refrigerator, characterized by comprising:

[0309] A cooler room housing the coolers;

[0310] a damper duct member for guiding cold air from the cooler chamber;

[0311] a fan for increasing the pressure of the cold air in the cooler chamber; and

[0312] A rectifying plate disposed on the damper duct member directs the wind exhausted from the fan to the damper,

[0313] The rectifying plate is located in a region near a side surface of a driving portion of the damper and along a flow path direction of the wind.

[0314] [Appendix 5-2]

[0315] The refrigerator as described in Appendix 5-1 is characterized in that it comprises:

[0316] a fan motor for driving the fan; and

[0317] The heat-insulating partition duct plate on which the fan motor is mounted,

[0318] The damper duct component is mounted on the heat-insulating partition duct plate by screwing.

[0319] [Appendix 5-3]

[0320] The refrigerator as described in Appendix 5-1 is characterized in that:

[0321] A screw-fitting component is provided for fixing the heat-insulating partition duct plate and the damper duct component,

[0322] The screw-on component is disposed near the cylindrical edge of the damper duct component.

[0323] A sealing member is provided at the opening peripheral edge portion of the cylindrical rib and between the cylindrical rib and the front panel of the damper duct member.

[0324] [Appendix 5-4]

[0325] The refrigerator as described in Appendix 5-1 is characterized in that:

[0326] A bolt insertion portion is formed on the front box body of the damper duct component.

[0327] The screw member inserted into the bolt insertion portion is formed at a position that does not overlap with the front housing when viewed in the insertion direction of the screw member.

[0328] [Appendix 5-5]

[0329] The refrigerator as described in Appendix 5-4 is characterized in that:

[0330] The two screw-engaging members inserted through the two bolt insertion portions are located on a diagonal line of the member to be mounted via the two screw-engaging members.

[0331] Description of Reference Numerals

[0332] 1 Refrigerator

[0333] 5. First switching room (storage room)

[0334] 6 Second switching room (storage room)

[0335] 8b Second evaporator chamber (cooler chamber)

[0336] 9b Second fan (fan)

[0337] 10 Insulation box

[0338] 14b Second evaporator (cooler)

[0339] 27 Insulated partition wall

[0340] 210 Front Panel

[0341] 220 Rear Panel

[0342] 230A First Foam Insulation Material

[0343] 230B Second foam insulation material

[0344] 280 Bolt

[0345] 300 Air door duct parts

[0346] 310 front box

[0347] 311p protrusion

[0348] 311q Water guide

[0349] 320 rear box

[0350] 400 Insulation Divider Duct Plate

[0351] 410 damper component (first damper component)

[0352] 412 First switch chamber second baffle (baffle)

[0353] 413c Baffle support

[0354] 413 Drive unit

[0355] 413A Box body

[0356] 413B Cover parts

[0357] 413a Box (Storage Box)

[0358] 413k Shaft

[0359] 414b Rear surface (side)

[0360] 414f Top

[0361] 414g, 414h, 414i Threaded boss

[0362] 415 Baffle support cover (covering part)

[0363] 415a, 415b Side

[0364] 415c Top

[0365] 416 Umbrella Department

[0366] 417 Guide Edge

[0367] 418 Connector

[0368] 418a Terminal (connection terminal)

[0369] 420 damper component (second damper component)

[0370] 422 Second switch chamber second baffle (baffle)

[0371] DM drive components

[0372] P1, P2 Corner (large curvature)

[0373] P3, P4 corners (small curvature).

Claims

1. A refrigerator, characterized in that: include: A rectangular sealing member having an edge, wherein the edge includes a straight portion that is straight when viewed from the front and a corner portion that is arc-shaped; and a damper capable of moving the sealing member to contact and separate from the opening, A ratio of a dimension of the corner portion to a total length of one edge of the sealing member is 19% or more and 31% or less.

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