JP2020139648A - refrigerator - Google Patents

Abstract

To provide a refrigerator for suppressing a dead space and improving maintainability of partition members.SOLUTION: A refrigerator includes: a first storage room having a temperature zone set to a freezing temperature zone; a second storage room located below the first storage room and capable of setting a temperature zone to a refrigeration temperature; and a third storage room located below the second storage room and capable of setting a temperature zone to a freezing temperature. Furthermore, there are provided: a first partition member disposed between the first storage room and the second storage room; a second partition member disposed between the second storage room and the third storage room; and a third partition member located behind the second storage room, and disposed ahead of at least a part of an evaporator. A compressor is arranged in a rear bottom part of the third storage room. At least a part of the evaporator is positioned below the second partition member, the third partition member extends to a lower side over the second partition member, and the second partition member is detachably supported on the third partition member.SELECTED DRAWING: Figure 2

Description

The present invention relates to a refrigerator.

Patent Document 1 includes an ice making room set in a freezing temperature zone, a vegetable room below the ice making room, and a freezing room below the vegetable room, and is between the ice making room and the vegetable room. The first partition member provided in the vegetable compartment, the second partition member provided between the vegetable compartment and the freezing chamber, and the third partition member provided behind the vegetable compartment and in front of the evaporator. And, and a refrigerator in which a compressor is arranged at the rear bottom of the freezing chamber is described.

International Publication No. 2018/131706

In the refrigerator described in Patent Document 1, the entire evaporator is located above the second partition member, and a dead space is located behind the freezing chamber and above the compressor. Further, since the second partition member is foam-molded integrally with the inner box, the maintainability of the second partition member is low.

The present invention solves the above-mentioned conventional problems, and an object of the present invention is to provide a refrigerator in which dead space is suppressed and the maintainability of partition members is improved.

The present invention includes a first storage chamber whose temperature zone is set to a freezing temperature zone, a second storage chamber below the first storage chamber and whose temperature zone can be set to a refrigerating temperature, and the above. Below the second storage chamber, a third storage chamber whose temperature zone can be set to the freezing temperature is provided, and is provided between the first storage chamber and the second storage chamber. A first partition member, a second partition member provided between the second storage chamber and the third storage chamber, and at least behind the second storage chamber of the evaporator. In a refrigerator having a third partition member provided in front of a part and a compressor arranged at the rear bottom of the third storage chamber, at least a part of the evaporator is a second. The third partition member is located below the partition member of the above, extends downward beyond the second partition member, and the second partition member is attached to the third partition member. It is characterized by being detachably supported.

According to the present invention, it is possible to provide a refrigerator in which dead space is suppressed and the maintainability of partition members is improved.

It is a front view which shows the refrigerator which concerns on this embodiment. FIG. 1 is a cross-sectional view taken along the line AA of FIG. It is a front view which shows the inside of the refrigerator of this embodiment. It is a schematic diagram which shows the arrangement of a discharge port and a return port. It is an exploded perspective view when the heat insulating partition wall on the back of a switching room is seen from the front side. It is an exploded perspective view when the heat insulation partition wall of the back of a switching chamber is seen from the back side. It is a perspective view which shows the damper for direct cooling of a 1st switching chamber. It is a perspective view which shows the damper for direct cooling of a 2nd switching chamber. It is a perspective view which shows the damper for indirect cooling. It is a perspective view which shows the arrangement of the heater provided in the panel body. It is a perspective view which shows the arrangement of the heater provided in the panel cover. It is a figure explaining the flow of cold air. It is a schematic diagram which shows the air passage structure. It is an exploded perspective view which shows the structure which suppresses the cold air leakage of a damper. It is sectional drawing which shows the structure which suppresses the cold air leakage of a damper. It is a perspective view which looked at the direct cooling damper of a 1st switching chamber from the back side. 16 is a cross-sectional view taken along the line XX of FIG. It is a perspective view when the heat insulation partition wall of the back of a switching chamber is seen from the back side.

Hereinafter, embodiments for carrying out the present invention (the present embodiment) will be described. However, the present embodiment is not limited to the following contents, and can be arbitrarily modified and implemented without impairing the gist of the present invention. Further, in the following, the directions shown in FIG. 1 will be used as a reference.

(First Embodiment)
FIG. 1 is a front view showing a refrigerator according to the first embodiment.

As shown in FIG. 1, the refrigerator 1 has a box body 10, a refrigerating chamber 2 from above, an ice making chamber 3 (first storage chamber) and an upper freezing chamber 4 (first storage chamber) arranged on the left and right sides. ), The first switching chamber 5 (second storage chamber), and the second switching chamber 6 (third storage chamber).

Further, the refrigerator 1 is provided with a door for opening and closing the opening of each storage room. These doors include a left and right rotary refrigerating chamber doors 2a and 2b that open and close the opening of the refrigerating chamber 2, an ice making chamber 3, an upper freezing chamber 4, a first switching chamber 5, and a second switching chamber 6. A pull-out type ice making chamber door 3a, a freezing chamber door 4a, a first switching chamber door 5a, and a second switching chamber door 6a that open and close each of the openings. The internal material of these multiple doors is mainly composed of urethane.

The refrigerating room 2 is a refrigerating storage room in which the inside of the refrigerator is set to a refrigerating temperature range (0 ° C. or higher), for example, about 4 ° C. on average. The ice making chamber 3 and the upper freezing chamber 4 are freezing storage chambers in which the inside of the refrigerator is set to a freezing temperature range (less than 0 ° C.), for example, about -18 ° C on average.

The first switching chamber 5 and the second switching chamber 6 are switching storage chambers that can be set to a freezing temperature zone or a refrigerating temperature zone. For example, a refrigerating mode in which the average temperature is about 4 ° C. and an average of about -20 ° C. You can switch to the freezing mode. In the refrigerator 1 of the present embodiment, the temperature is further set between the refrigerating mode and the freezing mode, which is a strong refrigerating mode or a weak freezing mode, a weak refrigerating mode in which the temperature is higher than the refrigerating mode, and a strong lower temperature than the freezing mode. A plurality of operation modes such as a freezing mode are provided, and these operation modes can be selected by operating the operation unit 200.

FIG. 2 is a cross-sectional view taken along the line AA of FIG.

As shown in FIG. 2, the refrigerator 1 is housed in a box body 10 formed by filling a foam insulating material (for example, urethane foam) between an outer box 10a made of steel plate and an inner box 10b made of synthetic resin. The outside and the inside of the refrigerator are separated from each other. In addition to the foam heat insulating material, a vacuum heat insulating material having a relatively low thermal conductivity is mounted on the box body 10 between the outer box 10a and the inner box 10b. As a result, the heat insulating performance is improved without reducing the food storage volume. Here, the vacuum heat insulating material is formed by wrapping a core material such as glass wool or urethane with an outer packaging material. The outer packaging material contains a metal layer (for example, aluminum) to ensure gas barrier properties. Further, the vacuum heat insulating material is generally formed with a flat surface shape due to manufacturability.

In the refrigerator 1, the vacuum heat insulating material 25f is placed on the back of the box body 10, the vacuum heat insulating material 25 g is placed on the upper and lower parts of the box body 10 (the upper part is not shown), and the vacuum heat insulating material is placed on both sides of the box body 10 (not shown). ) Are provided to improve the heat insulating performance of the refrigerator 1.

Further, in the refrigerator 1, the heat insulating performance of the refrigerator 1 is improved by providing the vacuum heat insulating materials 25d and 25e on the first switching chamber door 5a and the second switching chamber door 6a. In such a heat insulating configuration, the first switching chamber 5 and the second switching chamber 6 are set to the freezing mode, and the temperature difference between the outside of the refrigerator and the first switching chamber 5 and the second switching chamber 6 is large, and the amount of heat entering from the outside air is large. When there are many, the energy saving performance can be greatly improved.

In the refrigerator 1, the refrigerating chamber 2, the ice making chamber 3, and the upper freezing chamber 4 are separated by a heat insulating partition wall 28. Further, in the refrigerator 1, the ice making chamber 3, the upper freezing chamber 4, and the first switching chamber 5 are separated by a heat insulating partition wall (first partition member) 29. Further, in the refrigerator 1, the first switching chamber 5 and the second switching chamber 6 are separated by a heat insulating partition wall (second partition member) 30. In the refrigerator 1 of the present embodiment, the heat insulating performance of the refrigerator 1 is enhanced by providing the vacuum heat insulating material 25b inside the heat insulating partition wall 29 and the vacuum heat insulating material 25c inside the heat insulating partition wall 30.

Further, in the refrigerator 1, the first switch is made between the evaporator (first evaporator) EV1 and its peripheral air passages (F evaporator chamber 8b, freezing chamber air passage 12, and return air passage 12d (see FIG. 3), which will be described later. A heat insulating partition wall (third partition member) 27 is provided between the chamber 5 and a part of the second switching chamber 6. The evaporator EV1 includes a compressor 24, a condenser (not shown), and a capillary. A tube (not shown) constitutes a refrigeration cycle.

In the refrigerator 1 having such a structure, when the refrigerating temperature zone is set, the first switching chamber 5 has an upper surface (insulation partition wall 29), a back surface (insulation partition wall 27), and further, in which adjacent rooms are in the freezing temperature zone. Heat is absorbed from the bottom surface (insulation partition wall 30), and the first switching chamber 5 is excessively cooled. For this reason, a heater described later is provided to maintain the refrigerating temperature range.

The ice making chamber door 3a, the freezing chamber door 4a, the first switching chamber door 5a, and the second switching chamber door 6a are integrally pulled out from the ice making chamber container 3b, the freezing chamber container 4b, the first switching chamber container 5b, and the second switching chamber. A chamber container 6b is provided.

On the back side of the refrigerator chamber 2, the upper freezer compartment 4, the first switching chamber 5, and the second switching chamber 6, the refrigerating chamber temperature sensor 41, the freezing chamber temperature sensor 42, the first switching chamber temperature sensor 43, and the second A switching chamber temperature sensor 44 is provided.

Further, the refrigerating chamber 2 is provided with an evaporator EV2 (second evaporator) on the refrigerating chamber side. A refrigerating chamber side evaporator temperature sensor 40a is provided above the refrigerating chamber side evaporator EV2. Further, an evaporator temperature sensor 40b is provided above the evaporator EV1. With these sensors, the temperatures of the refrigerating chamber 2, the ice making chamber 3, the upper freezing chamber 4, the first switching chamber 5, the second switching chamber 6, the refrigerating chamber side evaporator EV2, and the evaporator EV1 are detected. Further, an outside air temperature sensor 37 and an outside air humidity sensor 38 are provided inside the door hinge cover 16 on the ceiling of the refrigerator 1 to detect the temperature and humidity of the outside air (outside air). In addition, by providing a door sensor (not shown), the open / closed state of each door 2a, 2b, 3a, 4a, 5a, 6a is detected.

A control board 31 on which a CPU, a memory such as a ROM or RAM, an interface circuit, or the like, which is a part of the control device, is mounted is arranged on the upper part of the refrigerator 1. The control board 31 includes an outside air temperature sensor 37, an outside air humidity sensor 38, a refrigerating room temperature sensor 41, a freezing room temperature sensor 42, a first switching room temperature sensor 43, a second switching room temperature sensor 44, and a refrigerating room side evaporator temperature. It is connected to the sensor 40a, the evaporator temperature sensor 40b, etc. by electrical wiring (not shown).

Further, the control board 31 is based on the output value of each sensor, the setting of the operation unit 200 (see FIG. 1), the program recorded in advance in the ROM, and the like, and is described later in the compressor 24, the refrigerator room side fan 9a, and the blower fan. Controls such as 137, damper 132, 133, 135, 136 (see FIG. 12) are performed.

Further, the refrigerator 1 is provided with a defrost heater 21 below the evaporator EV1. The drain water generated during defrosting by the defrost heater 21 once drops into the gutter 23b and is stored in the evaporating dish 32b provided on the upper part of the compressor 24 through the drain hole 26.

FIG. 3 is a front view showing the inside of the refrigerator of the present embodiment. FIG. 3 shows a state in which the doors 2a, 2b, 3a, 4a, 5a, 6a, the ice making chamber container 3b, the freezing chamber container 4b, the first switching chamber container 5b, and the second switching chamber container 6b are removed from the refrigerator 1. Is shown schematically.

As shown in FIG. 3, the ice making chamber 3 is formed with a discharge port 12a for discharging cold air in the freezing temperature range. The upper freezing chamber 4 is formed with a discharge port 12b for discharging cold air in the freezing temperature range.

The first switching chamber 5 is formed with a direct cooling discharge port DP1 for discharging cold air when the freezing temperature zone is set. The direct cooling discharge port DP1 is formed at a position where cold air can be directly supplied into the first switching chamber container 5b. Further, the first switching chamber 5 is formed with an indirect cooling discharge port DP2 for discharging cold air when the refrigerating temperature zone is set. The indirect cooling discharge port DP2 is formed at a position where cold air can be supplied to the outside of the first switching chamber container 5b (see FIG. 2). Further, the first switching chamber 5 is formed with a first return port RP1 and a second return port RP2 for returning the cold air after cooling the food to the evaporator EV1 (see FIG. 2).

The second switching chamber 6 is formed with a direct cooling discharge port DP3 for discharging cold air when the freezing temperature zone is set. The direct cooling discharge port DP3 is formed at a position where cold air can be directly supplied into the second switching chamber container 6b (see FIG. 2). Further, the second switching chamber 6 is formed with an indirect cooling discharge port DP4 for discharging cold air when the refrigerating temperature zone is set. The indirect cooling discharge port DP4 is formed at a position where cold air can be supplied to the outside of the second switching chamber container 6b (see FIG. 2). Further, the second switching chamber 6 is formed with a return port RP3 that returns the cold air discharged from the direct cooling discharge port DP3 and the indirect cooling discharge port DP4 to the evaporator EV1 (see FIG. 2).

The direct cooling is a method of directly supplying cold air to the stored food to cool it. Further, the indirect cooling is a method of supplying and cooling the stored food so that the cold air does not come into direct contact with the stored food in order to suppress the drying of the food.

FIG. 4 is a schematic view showing the arrangement of the discharge port and the return port.

As shown in FIG. 4, the heat insulating partition wall 27 includes a front surface portion 27a located on the front side (inside the refrigerator, the front side), a left side surface portion 27b located on the left side surface, and a right side surface portion 27c located on the right side surface. It is configured to project inside the refrigerator. Further, the left side surface portion 27b and the right side surface portion 27c face the inner box 10b (see FIG. 3).

Further, the heat insulating partition wall 30 is arranged so as to partition the heat insulating partition wall 27 vertically. Further, the heat insulating partition wall 30 is arranged so that the region of the heat insulating partition wall 27 on the first switching chamber 5 side is wider than the region on the second switching chamber 6 side. In other words, the heat insulating partition wall 27 constitutes the entire inner back surface of the first switching chamber 5, and constitutes a part of the inner back surface of the second switching chamber 6.

The direct cooling discharge port DP1 of the first switching chamber 5 is formed above the front portion 27a above the heat insulating partition wall 30. Further, the indirect cooling discharge port DP2 of the first switching chamber 5 is formed on the left side surface portion 27b above the heat insulating partition wall 30.

The first return port RP1 of the first switching chamber 5 is formed on the front portion 27a above the heat insulating partition wall 30. The second return port RP2 of the first switching chamber 5 is formed on the right side surface portion 27c above the heat insulating partition wall 30.

The direct cooling discharge port DP3 of the second switching chamber 6 is formed on the front portion 27a below the heat insulating partition wall 30. The indirect cooling discharge port DP4 of the second switching chamber 6 is formed on the left side surface portion 27b below the heat insulating partition wall 30. The return port RP3 of the second switching chamber 6 is formed in the front portion 27a below the heat insulating partition wall 30.

The first return port RP1, the second return port RP2, and the return port RP3 communicate with the return air passage 12d (duct) extending in the vertical direction. The upper part of the return air passage 12d communicates with a return port (not shown) provided in the ice making chamber 3 and the upper freezing chamber 4. A flow path is configured so that the cold air returned from the return ports RP1, RP2, and RP3 returns to the evaporator EV1 (see FIG. 2). The position of the return air passage 12d facing the first return port RP1 and the position of the return air passage 12d facing the second return port RP2 correspond to the confluence portion P.

FIG. 5 is an exploded perspective view of the heat insulating partition wall provided on the back surface of the switching chamber when viewed from the front side. FIG. 6 is an exploded perspective view of the heat insulating partition wall provided on the back surface of the switching chamber when viewed from the back side.

As shown in FIGS. 5 and 6, the heat insulating partition wall 27 includes a panel cover 130 provided on the front side (inside the refrigerator), a panel main body 131 provided on the back side, dampers 132 and 133, a damper member 134, and a blower fan 137. , Fan cover 138, cord storage case 139, and the like.

Further, the heat insulating partition wall 27 is configured to include heat insulating materials 141, 142, 143, 144, 145. These heat insulating materials 141 to 145 are formed of foam-molded polystyrene foam (so-called Styrofoam).

The panel cover 130 is formed by molding a synthetic resin, and has a front surface portion 130a, an upper surface portion 130b, a lower surface portion 130c, a right side surface portion 130d, and a left side surface portion 130e. The front surface portion 130a is arranged on the front surface side and has a substantially rectangular shape. The upper surface portion 130b is formed so as to extend substantially vertically rearward from the upper end edge of the front surface portion 130a. The lower surface portion 130c is formed so as to extend substantially vertically rearward from the lower end edge of the front surface portion 130a. The right side surface portion 130d is formed so as to extend substantially vertically rearward from the right end edge of the front surface portion 130a. The left side surface portion 130e is formed so as to extend substantially vertically rearward from the left end edge of the front surface portion 130a.

Further, the panel cover 130 is formed with a recess 130f into which the heat insulating partition wall 30 (see FIG. 2) is fitted. Further, direct cooling discharge ports DP1 and DP3 are formed on the front surface portion 130a of the panel cover 130. The direct cooling discharge ports DP1 and DP3 each have an elongated rectangular shape in the left-right direction, and are arranged to the left when viewed from the front.

The first return port RP1 is formed on the side opposite to the direct cooling discharge port DP1 in the left-right direction (width direction). Further, the first return port RP1 is formed at a position at the lower end of the first switching chamber 5.

The return port RP3 has an elongated rectangular shape in the left-right direction and is arranged to the right. Further, the return port RP3 is located in the vicinity of the first return port RP1.

Further, the panel cover 130 is formed with a mounting portion 130 g to which the cord storage case 139 is mounted.

The panel body 131 is formed by molding a synthetic resin, is provided behind the panel cover 130, and has a substantially rectangular shape that can be fitted with the panel cover 130. Further, the panel body 131 has a substantially rectangular back surface portion 131a arranged on the back surface side, an upper surface portion 131b forward from the upper end edge of the back surface portion 131a, and a right side surface portion 131c extending substantially vertically forward from the right end edge of the back surface portion 130a. It has a left side surface portion 131d extending substantially vertically forward from the left end edge of the back surface portion 130a.

Further, the upper surface portion 131b is formed with an introduction port 131h for introducing the return cold air from the ice making chamber 3 and the upper freezing chamber 4. Further, an upright wall 131i extending upward is formed on the upper surface portion 131b. Further, the second return port RP2 described above is formed on the right side surface portion 131c. In the second return port RP2, a plurality of wind direction plates 131s are formed at intervals in the vertical direction. Further, the wind direction plate 131s is composed of a plate-shaped member and is inclined so as to descend from the opening side toward the back side.

Further, the panel main body 131 is formed with a horizontally long rectangular through hole 131e that penetrates in the front-rear direction at a position facing the direct cooling discharge port DP1. Further, the panel main body 131 is formed with a rectangular through hole 131f penetrating in the front-rear direction at a position facing the direct cooling discharge port DP3. Further, the panel body 131 is formed with a mounting portion 131 g to which the cord storage case 139 is mounted.

The damper 132 (damper for freezing temperature zone) is for introducing cold air for cooling directly into the first switching chamber 5. The damper 133 (damper for the freezing temperature zone) is for introducing cold air for cooling directly into the second switching chamber 6. The damper member 134 (damper for refrigerating temperature zone) is a twin damper provided with a damper 135 and a damper 136. The damper 135 is for introducing cold air for indirect cooling into the first switching chamber 5. The damper 136 is for introducing cold air for indirect cooling into the second switching chamber 6.

In the blower fan 137, the turbofan, which is a centrifugal fan, is arranged substantially vertically, in other words, the rotation axis is arranged so as to face the front-rear direction (horizontally). Further, the blower fan 137 includes a casing 137a, an impeller 137b rotatably supported by the casing 137a, a motor 137c for rotationally driving the impeller 137b, and a mounting portion 137d for attaching the casing 137a to the panel body 131. There is.

Since the turbofan is a high static pressure type blower, it has a characteristic that the air volume can be easily increased at high static pressure (large air passage resistance) as compared with a propeller fan generally used in a refrigerator.

The fan cover 138 is formed by molding a synthetic resin, and is provided on the back surface (rear side) of the blower fan 137, a wall surface 138b on which a circular introduction port 138a is formed, and a peripheral surface of the blower fan 137. It is equipped with a peripheral wall 138c. The peripheral wall 138c is configured to cover the lower surface side and the right side surface side of the blower fan 137.

The cord storage case 139 has a storage unit 139a for storing cords (electric wires) extending from dampers 132, 133, 135, 136, a blower fan 137, heaters H1 to H3 and H11 to H14 described later. Further, the cord storage case 139 includes a arranging portion cover 139b formed on the panel cover 130 and covering the arranging portion 130h for arranging the cord (electric wire).

The heat insulating material 141 has a surface 141a in contact with the panel cover 130 and a surface 141b in contact with the panel body 131, and is formed so as to fill a gap formed between the panel cover 130 and the panel body 131. .. Further, the heat insulating material 141 is formed with a communication hole 141c for directly communicating the cooling discharge port DP1 and the through hole 131e. Further, the heat insulating material 141 is formed with a notch 141d penetrating in the front-rear direction at a position facing the cord accommodating portion 131g, which is recessed from above.

Further, the heat insulating material 141 is formed with a duct wall surface 141e forming the right side wall of the return air passage 12d returning from the introduction port 131h to the evaporator EV1. A return port communication portion 141f is formed in the duct wall surface 141e so as to be recessed at a position facing the second return port RP2 formed in the panel main body 131.

Further, the heat insulating material 141 is formed with a return port communication portion 141 g cut out at a position facing the first return port RP1 formed on the panel cover 130.

The heat insulating material 142 is arranged on the lower side of the heat insulating material 141, and has a surface 142a in contact with the panel cover 130 and a surface 142b in contact with the panel body 131. Further, the heat insulating material 142 is formed with a notch 142c formed in a concave shape from the upper surface side at a position facing the return port RP3 formed in the panel cover 130.

The heat insulating material 143 is attached to the back surface side of the panel main body 131, and is formed in a substantially L shape in a plan view. Further, the heat insulating material 143 is formed with a notch 143a recessed from the front side at a position facing the upright wall 131i. Further, the heat insulating material 143 is formed with a notch 143b recessed from the front side at a position facing the indirect cooling discharge port DP2 of the panel main body 131. Further, the heat insulating material 143 is formed with a notch 143c recessed from the front side at a position facing the indirect cooling discharge port DP4 of the panel main body 131.

Further, as shown in FIG. 5, the heat insulating material 143 is formed with a fitting holding portion 143d in which the damper 132 is fitted and held. Further, the heat insulating material 143 is formed with a fitting holding portion 143e in which the back surface side of the damper 133 is fitted and held. Further, the heat insulating material 143 is formed with an air passage 143f extending downward toward the damper 133.

The heat insulating material 144 is formed with a fitting holding portion 144a in which the front surface side of the damper member 134 is fitted and held. Further, the front surface side of the heat insulating material 144 is fitted into the recess 131j formed in the panel main body 131. In this way, the heat insulating material 143 and the heat insulating material 144 hold the damper member 134 in a state of being pressed from the front and back. Further, the heat insulating material 144 is formed with a fitting portion 144b that fits with the cutout portion 143c of the heat insulating material 143.

The heat insulating material 145 has an elongated plate shape formed in a substantially L shape, and is arranged so as to cover the upper portion of the damper 132, the side portion on the motor side, and the lower portion.

As shown in FIG. 6, a protruding wall 131k formed along the peripheral wall 138c of the fan cover 138 is formed on the rear surface (back surface) of the panel main body 131. Further, a mountain-shaped guide wall 131m is formed on the protruding wall 131k. The guide wall 131m has a first curved portion 131n that sends cold air to the damper 132 side, and a second curved portion 131o that sends cold air to the damper member 134 side.

Further, a screw boss 131q for screw-fixing the blower fan 137 is formed on the rear surface (back surface) of the panel main body 13. The blower fan 137 is fixed to the panel body 131 by screwing a screw (not shown) inserted into the mounting portion 137d of the casing 137a into the screw boss 131q.

The heat insulating material 141 is formed with a mountain-shaped fitting portion 141g that protrudes toward the panel body 131 side. The fitting portion 141g is fitted into the cavity portion 131r (see FIG. 5) formed in the protruding wall 131m.

FIG. 7 is a perspective view showing a damper for direct cooling of the first switching chamber.

As shown in FIG. 7, the damper 132 includes a flapper 132a, a flapper support portion 132b that supports the flapper 132a (blade member) so as to be openable and closable, a drive portion 132c that applies a rotational driving force to the flapper 132a, and the like. The drive unit 132c opens and closes the flapper 132a by a known technique including a motor and a gear. Further, a sheet-shaped sealing material 132d is attached to the entire front surface of the flapper 132a.

Further, the damper 132 is provided with a heater H1 on the peripheral surface of the flapper support portion 132b. The heater H1 is composed of, for example, a heater wire HE composed of a lead wire having a diameter of 3 mm and an aluminum sheet AS covering the heater wire HE. The aluminum sheet AS spreads the heat from the heater wire HE over the entire flapper support portion 132b, and is made of aluminum foil. The heater H1 is arranged so as to surround almost the entire peripheral surface (side surface) of the damper 132.

Further, a sealing material S1 is provided on the peripheral edge of the opening 132e formed in the flapper support portion 132b. The sealing material S1 is a known material used as a packing (for example, a polyurethane type material), and is configured in a square frame shape so as to surround the entire peripheral edge portion of the opening 132e.

Here, as shown in FIG. 16, the flapper 132a is configured to be rotated by the drive unit 132c around the rotation axis A. However, since the flapper 132a has a horizontally long shape, when the flapper 132a is rotated and closed, the flapper 132a warps, so that the portion of the flapper 132a that corresponds to the diagonal of the drive unit 132c (B in FIG. 16). And there is a possibility that a gap is formed between the opening 132e and the diagonal peripheral edge C.

In particular, when there is a cooler on the back side of the flapper 132a and there is a storage chamber in the refrigerating temperature zone on the front side of the flapper 132a, if there is a gap, the cold air in the cooler chamber accommodating the cooler will be released. It invades the storage room in the refrigerated temperature zone, and the storage room in the refrigerated temperature zone becomes too cold.

Therefore, a reinforcing portion 132f is provided on the back surface side of the flapper 132a. As the reinforcing portion, any one that suppresses the warp of the flapper 132a may be used, and a rib may be formed. The reinforcing portion in the present embodiment is configured by attaching a heat-insulating polyethylene-based resin sheet to the back surface side of the flapper 132a with an adhesive. This resin sheet is made of a closed cell material that does not easily absorb water to prevent freezing. Similarly, a polyethylene-based resin sheet is attached to the front surface side of the flapper 132a as a sealing surface that comes into contact with the peripheral edge of the opening 132e.

As another embodiment, a leaf spring may be arranged between the front surface side of the flapper 132a and the resin sheet forming the sealing surface to close the gap between the flapper 132a and the peripheral edge portion C. .. Further, a coil spring may be attached to the end of the rotating shaft on the opposite side of the drive unit 132c to close the gap in the same manner.

In this embodiment, a surface smoothing agent (for example, grease) is applied to the surface of the resin sheet forming the sealing surface. Therefore, even a slight gap between the opening 132e and the peripheral edge thereof is filled, so that cold air can be more prevented from entering, water can be prevented from entering the gap between closed cells, and freezing can be further suppressed.

Here, since the rotation axis of the flapper 132a of the present embodiment is on the upper side, a gap is more likely to be generated in the lower part of the flapper 132a than in the upper part. Therefore, it is preferable to apply grease so as to extend not only to the lower sealing surface (contact surface with the peripheral edge of the opening 132e) but also to the region above the sealing surface. As a result, even if the flapper 132a rotates repeatedly, the grease is supplied to the sealing surface by its own weight, so that the sealing property can be continuously ensured. In this embodiment, as a specific type of grease, silicone grease, which is hard to splash water and can obtain sealing property even at a low temperature, is used.

FIG. 8 is a perspective view showing a damper for direct cooling of the second switching chamber.

As shown in FIG. 8, the damper 133 includes a flapper 133a, a flapper support portion 133b that supports the flapper 133a (blade member) so as to be openable and closable, a drive portion 133c that applies a rotational driving force to the flapper 133a, and the like.

Further, the damper 133 is provided with a heater H2 on the peripheral surface of the flapper support portion 133b. The heater H2 is arranged so as to surround almost the entire peripheral surface (side surface) of the flapper support portion 133. Further, the flapper support portion 133b is provided with a sealing material S2 on the entire peripheral edge portion of the opening 133e.

FIG. 9 is a perspective view showing an indirect cooling damper.

As shown in FIG. 9, the damper member 134 has dampers 135 and 136 and a common drive unit 134a that independently drives these dampers 135 and 136. Similar to the dampers 132 and 133, the dampers 135 and 136 include flappers 135a and 136a and flapper support portions 135b and 136b. In the present embodiment, the damper 135 and the damper 136 are integrally configured, but they may be separately configured.

Further, the damper member 134 is provided with a heater H3 on the peripheral surfaces of the flapper support portions 135b and 136b. The heater H3 is arranged so as to surround substantially the entire peripheral surface (side surface) of the flapper support portions 135b and 136b. Further, the flapper support portion 135b is provided with a sealing material S3 on the entire peripheral edge portion of the opening 135c. Further, the flapper support portion 136b is provided with a sealing material S4 on the entire peripheral edge portion of the opening 136c. Although the sealing materials S3 and S4 are provided separately, the sealing materials S3 and S4 may be provided integrally.

FIG. 10 is a layout diagram of a heater provided on the panel body.

As shown in FIG. 10, heaters H11 and H12 are provided on the rear surface side (rear surface side) of the panel main body 131.

The heater H11 is provided on the outer wall surface 12d1 of the return air passage 12d (see FIG. 4) described above. The outer wall surface 12d1 is the left side surface of the return air passage 12d.

The heater H12 is arranged on the upper surface of the protruding wall 131k and the rear surface 131p. Further, the heater H12 is composed of one heater H12 from the first curved portion 131n to the second curved portion 131o of the protruding wall 131 m. Further, the heater H12 is configured to be arranged so as to face the blower fan 137 (see FIGS. 5 and 6). Although not shown, the heaters H11 and H12 are composed of a heater wire composed of lead wires and an aluminum sheet covering the heater wires, similarly to the dampers 132 and 133 and the damper member 134.

In this way, the number of leader wires of the heater can be reduced by integrally forming the first curved portion 131n and the second curved portion 131o side and the blower fan 137 side. The first curved portion 131n and the second curved portion 131o side and the blower fan 137 side may be composed of separate heaters.

FIG. 11 is a layout diagram of a heater provided on the panel cover.

As shown in FIG. 11, heaters H13 and H14 are arranged on the back side of the front surface portion 130a of the panel cover 130. The heater H13 is configured to be able to heat the region between the direct cooling discharge port DP1 and the direct cooling discharge port DP3. The heater H14 is configured to be able to heat the region between the mounting portion 130 g and the first return port RP1.

By the way, when the first switching chamber 5 is set to the refrigerating temperature zone and the second switching chamber 6 is set to the refrigerating temperature zone, the upper side, the lower side and the back side of the first switching chamber 5 are all set to the refrigerating temperature zone. It becomes difficult to maintain the switching chamber 5 in the refrigerating temperature zone. Therefore, in the present embodiment, the heaters H13 and H14 are arranged on the back surface of the first switching chamber 5 so that the first switching chamber 5 can be adjusted to the refrigerating temperature zone. The basic configuration of the heaters H13 and H14 is composed of a heater wire and an aluminum sheet, similarly to the heaters H11 and H12 described above.

Further, in the first switching chamber 5, it is expected that the side close to the direct cooling discharge port DP1 cools well. Therefore, the heater wire HE constituting the heater H14 has a high density of the heater wire HE1 on the side where the direct cooling discharge port DP1 is provided, and the density of the heater wire HE2 on the side opposite to the direct cooling discharge port DP1. To lower. Thereby, the temperature unevenness of the first switching chamber 5 can be suppressed.

FIG. 12 is a diagram illustrating the flow of cold air. Note that FIG. 12 shows the inside of the refrigerator 1 when viewed from the front.

As shown in FIG. 12, the cold air discharged upward from the blower fan 137 is discharged from the discharge port 12a to the ice making chamber 3 and from the discharge port 12b to the upper freezing chamber 4. When the damper 132 is open, the cold air discharged from the blower fan 137 passes through the damper 132 and is directly discharged from the cooling discharge port DP1 to the first switching chamber 5. When the damper 133 is open, the cold air discharged from the blower fan 137 passes through the damper 133 and is directly discharged from the cooling discharge port DP3 to the second switching chamber 6.

When the damper 135 is open, the cold air discharged from the blower fan 137 passes through the damper 135 and is discharged from the indirect cooling discharge port DP2 to the first switching chamber 5. When the damper 136 is open, the cold air discharged from the blower fan 137 passes through the damper 136 and is discharged from the indirect cooling discharge port DP4 to the second switching chamber 6.

Further, the cold air after cooling the ice making chamber 3 and the upper freezing chamber 4 flows from the outlet 12c to the return air passage 12d, flows downward in the vertical direction, and returns to the evaporator EV1 from the lower side of the evaporator EV1. After cooling the first switching chamber 5, the cold air joins the return air passage 12d from the first return port RP1 and the second return port RP2, and returns to the evaporator EV1 from the lower side of the evaporator EV1. The cold air after cooling the second switching chamber 6 joins the return air passage 12d from the return port RP3 and returns to the evaporator EV1 from the lower side of the evaporator EV1.

FIG. 13 is a schematic view showing the air passage structure.

As shown in FIG. 13, the air (cold air) that has become cold due to heat exchange with the evaporator EV1 is blown to the ice making chamber 3 and the upper freezing chamber 4 through the freezing chamber air passage 12, the discharge ports 12a and 12b. To. As a result, the water in the ice tray 3c of the ice making chamber 3, the ice in the ice making chamber container 3b, the food in the freezing chamber container 4b of the upper freezing chamber 4, and the like are cooled. The air that has cooled the ice making chamber 3 and the upper freezing chamber 4 returns to the evaporator EV1 from the outlet 12c via the return air passage 12d, and is cooled again by the evaporator EV1.

In the refrigerator 1 of the present embodiment, the first switching chamber 5 and the second switching chamber 6 are also cooled by the air (cold air) cooled by the evaporator EV1. The blowing of cold air to the first switching chamber 5 and the second switching chamber 6 is controlled by the dampers 132 and 133 and the dampers 135 and 136, which are blower control units. First, the flow of cold air to the first switching chamber 5 will be described. The flow of cold air in the first switching chamber 5 differs between the freezing mode and the refrigerating mode. When the first switching chamber 5 is in the freezing mode, the damper 132 is opened and the damper 135 is closed. The air cooled by the evaporator EV1 is provided in the first switching chamber 5 via the blower fan 137, the freezing chamber air passage 12, the damper 132, and the direct cooling discharge port DP1 of the first switching chamber 5. Air is blown into the switching chamber container 5b to cool the food in the first switching chamber container 5b. Since the cold air directly cools the food in the first switching chamber container 5b, the food in the first switching chamber container 5b can be cooled in a relatively short time.

When the first switching chamber 5 is in the refrigerating mode, the damper 132 is closed and the damper 135 is opened. The air cooled by the evaporator EV1 passes through the blower fan 137, the freezer chamber air passage 12, the damper 135, and the indirect cooling discharge port DP2 of the first switching chamber 5, and is outside the first switching chamber container 5b (outer circumference). ) Is blown. It becomes difficult for the cold air to reach the food in the first switching chamber container 5b directly, that is, the food is indirectly cooled through the first switching chamber container 5b, so that the food can be cooled while suppressing the drying.

The air discharged from the direct cooling discharge port DP1 or the indirect cooling discharge port DP2 and cooled in the first switching chamber 5 is evaporated from the first return port RP1 and the second return port RP2 via the return air passage 12d. Return to EV1.

Next, the flow of cold air to the second switching chamber 6 will be described. The configuration of the second switching chamber 6 is the same as that of the first switching chamber 5, and the opening and closing of the dampers 133 and 136 is changed depending on the operation mode. When the second switching chamber 6 is in the freezing mode, the damper 133 is opened and the damper 136 is closed. The air (cold air) cooled by the evaporator EV1 is inside the second switching chamber container 6b via the blower fan 137, the freezing chamber air passage 12, the damper 133, and the direct cooling discharge port DP3 of the second switching chamber 6. Air is blown to cool the food on the second switching chamber container 6b. Since the cold air directly cools the food in the second switching chamber container 6b, the food in the second switching chamber container 6b can be cooled in a relatively short time.

When the second switching chamber 6 is in the refrigerating mode, the damper 136 is opened and the damper 133 is closed. The air cooled by the evaporator EV1 passes through the blower fan 137, the freezer chamber air passage 12, the damper 136, and the indirect cooling discharge port DP4 of the second switching chamber 6, and is outside the second switching chamber container 6b (outer circumference). ), And as indirect cooling, cool while suppressing the drying of food. The air cooled in the second switching chamber 6 returns to the evaporator EV1 from the return port RP3 via the return air passage 12d, and is cooled again by the evaporator EV1.

Returning to FIG. 12, when the first switching chamber 5 is in the freezing mode, the cold air generated by the evaporator EV1 flows through the damper 132 from the back side to the front side, and the through hole 131e of the panel main body 131 (see FIG. 5). , Directly discharged from the cooling discharge port DP1 to the front side of the first switching chamber 5 through the communication hole 141c (see FIG. 5). When the first switching chamber 5 is in the refrigerating mode, the cold air generated by the evaporator EV1 flows through the damper 135 from the right side to the left side, passes through the notch 143b (see FIG. 5), and is the indirect cooling discharge port DP2. Is discharged to the left side of the first switching chamber 5.

When the second switching chamber 6 is in the freezing mode, the cold air generated by the evaporator EV1 flows into the air passage 143f (see FIG. 5) and directly passes through the through hole 131f (see FIG. 5) to the cooling discharge port. It is discharged from the DP3 toward the front of the second switching chamber 6. When the second switching chamber 6 is in the refrigerating mode, the cold air generated by the evaporator EV1 flows to the damper 136 and is discharged from the indirect cooling discharge port DP4 toward the left side of the second switching chamber 6.

Further, the cold air after being discharged from the discharge port 12a of the ice making chamber 3 and the discharge port 12b of the upper freezing chamber 4 is directed downward in the vertical direction from the outlet 12c formed in the upper freezing chamber 4 through the return air passage 12d. Flows back to the evaporator EV1. Further, the cold air after being discharged from the direct cooling discharge port DP1 and the indirect cooling discharge port DP2 is sent from the first return port RP1 and the second return port RP2 provided in the middle of the return air passage 12d to the ice making chamber 3 And joins the cold air returning from the upper freezing chamber 4. The combined cold air flows downward in the vertical direction and returns to the evaporator EV1. Further, the cold air after being discharged from the direct cooling discharge port DP3 (see FIGS. 3 and 4) and the indirect cooling discharge port DP4 is from the return port RP3 and from the first return port RP1 and the second return port RP2. It merges with the cold air and returns to the evaporator EV1.

By the way, when the first switching chamber 5 is a switching chamber that can be switched between the refrigerating temperature zone (refrigerating mode) and the refrigerating temperature zone (refrigerating mode), the opening area of the direct cooling discharge port DP1 is changed to the indirect cooling discharge. It needs to be larger than the opening area of the outlet DP2. Along with this, it is necessary to increase the opening area of the return port of the first switching chamber 5. When a return air passage 12d for returning to the evaporator EV1 from the ice making chamber 3 and the upper freezing chamber 4 is provided and a return port for merging is provided in the middle of the return air passage 12d, the area of the return port is increased (one return port). If there are two large openings), cold air may flow back into the first switching chamber 5.

Therefore, in the refrigerator 1 of the present embodiment, the ice making room 3 and the upper freezing room 4 in the lower part of the refrigerating room 2, the first switching room 5 in the lower part of the ice making room 3 and the upper freezing room 4, and the ice making room 3 It is provided with an evaporator EV1 for cooling the upper freezing chamber 4 and the first switching chamber 5. Further, the refrigerator 1 includes a return air passage 12d that returns from the ice making chamber 3 and the upper freezing chamber 4 to the evaporator EV1, a direct cooling discharge port DP1 and an indirect cooling outlet that discharges cold air from the evaporator EV1 into the first switching chamber 5. It is provided with a cooling discharge port DP2. Further, the refrigerator 1 returns the cold air cooled in the first switching chamber 5 to the first return port RP1 and the second return port RP2, and the cold air from the first return port RP1 and the second return port RP2. It is provided with a merging portion P for merging with. In this case, the first return port RP1 opens to the front side. The second return port RP2 opens to the side surface side. As a result, the opening area of each return port of the first return port RP1 and the second return port RP2 can be reduced, so that cold air flows back into the first switching chamber 5 from the first return port RP1 and the second return port RP2. It becomes difficult. That is, when one large area opening is formed along the return air passage 12d, the cold air that has flowed back from the return port to the first switching chamber 5 returns to the return port again, and a flow in which the cold air circulates at the return port is generated. .. However, in the present embodiment, since the return port of the first switching chamber 5 is divided into the first return port RP1 and the second return port RP2 and formed by changing the opening direction, the inside of the first switching chamber 5 of cold air is formed. It is possible to suppress the backflow to the air and the circulation of the cold air described above. As a result, it is possible to realize the refrigerator 1 capable of suppressing the backflow of cold air while reducing the volume of the return air passage 12d.

Further, in the present embodiment, the direct cooling discharge port DP1 that discharges when the first switching chamber 5 is in the freezing temperature zone (freezing mode) and the discharge port DP1 that discharges when the first switching chamber 5 is in the refrigerating temperature zone (refrigerating mode). It has an indirect cooling discharge port DP2 and the like. The direct cooling discharge port DP1 is open to the front side, and the indirect cooling discharge port DP2 is open to the side surface side opposite to the first return port RP1 and the second return port RP2. According to this, it is possible to prevent the cold air discharged from the indirect cooling discharge port DP2 from short-cutting and flowing out from the return ports PR1 and PR2. Therefore, it becomes easy to maintain the inside of the first switching chamber 5 in the refrigerating temperature zone.

Further, in the present embodiment, the second return port has a larger opening area than the first return port. According to this, it becomes difficult for the cold air discharged from the direct cooling discharge port DP1 to flow back.

Further, in the present embodiment, the second return port RP2 includes a plurality of wind direction plates 131s arranged at intervals in the vertical direction, and these wind direction plates 131s are inclined so as to descend from the opening side toward the back side. (See FIG. 5). As a result, it is possible to prevent the cold air flowing from the upper side to the lower side of the return air passage 12d from flowing back from the second return port RP2 to the first switching chamber 5.

Further, the present embodiment includes a heat insulating partition wall 27 (panel) constituting the back surface of the first switching chamber 5. The heat insulating partition wall 27 includes a panel main body 131 provided with the second return port RP2, a panel cover 130 provided with the first return port RP1, and a heat insulating material 141 provided between the panel main body 131 and the panel cover 130. Have. The heat insulating material 141 is a return port that communicates the return air passage 12d and the first return port RP1 with the return port communication portion 141g (the first missing portion) and the return air passage 12d and the second return port RP2. It has a communication portion 141f (second notch portion). According to this, it is possible to insulate the return air passage 12d and return the cold air from the first return port RP1 and the second return port RP2 to the return air passage 12d.

Further, in the present embodiment, the second return port RP2 is located rearward in the front-rear direction of the panel main body 131. According to this, by increasing the distance between the first return port RP1 and the second return port RP2, the freezing temperature zone is higher than when the first return port RP1 and the second return port RP2 are closer to each other. It is possible to suppress the backflow of cold air (in the freezing mode).

By the way, in recent years, the heat insulating performance of refrigerators has improved. Therefore, when the first switching chamber 5 (switching chamber) of the refrigerator 1 is set to the refrigerating temperature zone (refrigerating mode), once the cold air from the evaporator flows into the refrigerator set to the refrigerating temperature zone, the refrigerating temperature zone is set. The inside of the refrigerator will be too cold. In particular, since the dampers 132, 133, 135 and 136 have a complicated shape (because the shape has many corners), cold air leaks easily from the periphery of the dampers 132, 133, 135 and 136. Further, when the heaters H1 to H3 are attached around the dampers 132, 133, 135, and 136 (see FIGS. 7 to 9), the surface of the heaters H1 to H3 becomes uneven, so a sealing material is attached from above. Even if it does, cold air leakage is likely to occur. Therefore, in the following, a structure for suppressing cold air leakage from the dampers 132, 133, 135, and 136 will be described with reference to FIGS. 14 and 15 as examples.

FIG. 14 is an exploded perspective view showing a structure for suppressing cold air leakage of the damper. FIG. 15 is a cross-sectional view showing a configuration for suppressing cold air leakage of the damper. Here, a damper member 134 (dampers 135, 136) having particularly many corners will be described as an example.

As shown in FIG. 14, a reinforcing member 150 made of a synthetic resin (for example, ABS resin) is attached to the damper member 134. The reinforcing member 150 is made of a synthetic resin (for example, polystyrene resin) that is harder than the damper member 134.

The reinforcing member 150 includes a covering portion 151 that covers the periphery of the damper member 134, and a brim portion 152 that forms a sealing surface. The covering portion 151 includes a front surface portion 151a arranged to face the front surface of the damper member 134, an upper surface portion 151b arranged on the upper surface of the damper member 134, a left side surface portion 151c arranged on the left and right side surfaces of the damper member 134, and a right side surface portion. It has a 151d and a lower surface portion 151e arranged on the lower surface of the damper member 134. Further, the front surface portion 151a is formed with a communication hole 151f for communicating with the opening 135c of the damper 135 and a communication hole 151g for communicating with the opening 136c of the damper 136. That is, the front surface of the damper member 134 is composed of one surface, the front surface portion 151a. The side surface (peripheral surface) of the damper member 134 is composed of an upper surface portion 151b, a left side surface portion 151c, a right side surface portion 151d, and a lower surface portion 151e, which are composed of four surfaces. In this way, the outside of the damper member 134 composed of many surfaces can be switched to the few surfaces.

The brim portion 152 is formed in a square frame shape when viewed from the front, and is orthogonal to the upper piece portion 152a extending in a direction orthogonal to the upper surface portion 151b, the left side piece portion 152b extending in a direction orthogonal to the left side surface portion 151c, and the right side surface portion 151d. It has a right side piece 152c extending in the direction of the surface and a lower piece part 152d extending in the direction orthogonal to the lower surface 151e. Further, the upper piece portion 152a and the left and right side pieces 152b and 152c are configured to be continuous surfaces. Further, the lower piece portion 152d and the left and right side pieces 152b and 152c are configured to be continuous surfaces. Further, the brim portion 152 is formed so as to be flush with the front surface portion 151a of the covering portion 151.

By attaching the reinforcing member 150 to the damper member 134 in this way, the number of front surfaces and the number of side surfaces are reduced from the number of front surfaces and the number of side surfaces in the case of the damper member 134 alone. be able to.

Although not shown, a space is formed inside the reinforcing member 150 in which the damper member 134 is fitted and fixed. Further, in the internal space of the reinforcing member 150, a space is formed in which the heater H3 is attached to the outer peripheral surface.

As shown in FIG. 15, a reinforcing member 152 is attached to the damper member 134, and the reinforcing member 152 is attached to the heat insulating materials 143A and 144A. The upper piece portion 152a of the reinforcing member 152 is inserted into the recess 146a formed by combining the heat insulating materials 143A and 144A via the sealing material 155. Similarly, the lower piece portion 152d of the reinforcing member 152 is inserted into the recess 146b formed by combining the heat insulating materials 143A and 144A via the sealing material 155. Although not shown, the left and right side pieces 152b and 152c of the reinforcing member 152 are also combined with the heat insulating materials 143A and 144A by the left and right side pieces 152b and 152c via the sealing material 155 in the same manner as described above. It is inserted into the formed recess.

Further, the sealing material 155 is held by being pressed by the heat insulating materials 143A and 144A from the front and back of the upper piece portion 152a. Further, the sealing material 155 is held by being pressed by the heat insulating materials 143A and 144A from the front and back of the lower piece portion 152d. As a result, the outer periphery of the damper member 134 is ensured to have a sealing property by the sealing material 155.

In this way, the damper member 134 (dampers 135, 136) is formed by attaching the reinforcing member 150 as a separate member to the damper member 134 having many surfaces (many corners) to form a shape having few surfaces (less corners). The sealability of the is stable. The other dampers 132 and 133 can be configured in the same manner, and the same effect can be obtained.

Next, with reference to FIGS. 2 and 18, a structure for attaching the heat insulating partition wall 27 located behind the first switching chamber 5 to the inner box 10b will be described.

First, as shown in FIG. 2, at least a part of the evaporator EV1 in the present embodiment is located below the heat insulating partition wall 30. That is, the space is effectively utilized by arranging a part of the evaporator EV1 in the dead space that can be originally generated above the compressor 24 arranged at the rear bottom of the second switching chamber 6.

For this reason, the heat insulating partition wall 27 also needs to extend beyond the heat insulating partition wall 30 to the lower side in order to cover the front of the evaporator EV1. Then, it becomes difficult to foam-mold the heat insulating partition wall 30 integrally with the inner box 10b. Therefore, in the present embodiment, the heat insulating partition wall 30 is detachably supported with respect to the heat insulating partition wall 27. As a result, the maintainability of the heat insulating partition wall 30 is also improved. The heat insulating partition wall 27 may have a structure in which a portion arranged behind the first switching chamber 5 and a portion arranged behind the second switching chamber 6 are vertically continuous as shown in FIG. Alternatively, the configuration may be divided into upper and lower parts by a portion arranged behind the first switching chamber 5 and a portion arranged behind the second switching chamber 6.

The heat insulating partition wall 27 of the present embodiment also supports the heat insulating partition wall 29 in a detachable manner. Therefore, the maintainability of the heat insulating partition wall 29 can be improved. However, by making the heat insulating partition wall 29 and the heat insulating partition wall 30 removable, the airtightness of the detached portion becomes important. Therefore, it is preferable to provide a sealing member formed of an elastic soft porous body between the heat insulating partition wall 29 or the heat insulating partition wall 30 and the heat insulating partition wall 27.

Further, the heat insulating partition wall 27 is also detachably attached to the inner box 10b. Therefore, as shown in FIG. 18, sealing members 161a, 161b, and 161c are provided on the back surface side of the heat insulating partition wall 27. Here, the left and right sides of the back surface of the heat insulating partition wall 27 have an R shape, an inclined shape, or a stepped shape, but avoid these front-rear position changing portions and seal the flat portion parallel to the rear surface of the inner box 10b. By providing the member 161a in the vertical direction, the airtightness is improved.

Further, the seal members 161b provided on the left and right side surfaces of the heat insulating partition wall 27 are continuously extended in the horizontal direction to the flat portion on the back surface side of the heat insulating partition wall 27 so as to cover the rear of the seal member 161a. As a result, it is possible to prevent the seal member 161b from being rolled up when the heat insulating partition wall 27 is attached to the inner box 10b.

The first is located on the left and right sides of the back surface of the heat insulating partition wall 27, rather than the seal member 161c which is located on the upper side of the back surface of the heat insulating partition wall 27 and seals between the ice making chamber 3 and the upper freezing chamber 4. The seal member 161a that seals the space with the switching chamber 5 is on the rear side. That is, the first switching chamber 5 and the surface where the temperature zone can be higher than that of the portion facing the ice making chamber 3 and the upper freezing chamber 4 in the same freezing temperature zone as the evaporator chamber where the evaporator EV1 is located. Since it is easier to suck in cold air in the part to be closed, the airtightness of this part is improved.

The airtightness may be further improved by providing an elastic adhesive between the heat insulating partition wall 27 and each seal member, or between the inner box 10b and each seal member. By using a silicone sealant as an example of the material of this elastic adhesive, it is possible to improve the airtightness while maintaining the ease of attachment / detachment of the heat insulating partition wall 27 to the inner box 10b.

As described above, in the present embodiment, the heat insulating partition wall 29, the heat insulating partition wall 30, and the heat insulating partition wall 27 are removable from the inner box 10b.

Although the present embodiment has been described above with reference to the drawings, the present embodiment is not limited to the above contents and includes various modifications. In the above-described embodiment, the case where the first return port RP1 and the second return port RP2 are provided as the return port of the first switching chamber 5 has been described as an example, but the return port RP3 of the second switching room 6 has been described. , The return port that opens on the front side of the refrigerator and the return port that opens on the side surface side may be formed separately. The first return port RP1 and the second return port RP2 may be applied not only to one of the first switching chamber 5 and the second switching chamber 6, but also to both the first switching chamber 5 and the second switching chamber 6.

1 Refrigerator 2 Refrigerator room 3 Ice making room (first storage room)
4 Upper freezing room (first storage room)
5 First switching room (second storage room)
6 Second switching room (third storage room)
12d Return air passage (duct)
EV1 evaporator (cooler)
27 Insulated partition wall (third partition member)
29 Insulated partition wall (first partition member)
30 Insulated partition wall (second partition member)
130 Panel cover 131 Panel body 131s Wind direction plate 132, 133, 135, 136 Damper 132a Flapper 132b Flapper support part 132c Drive part 132e Opening 132f Reinforcement part 141,142 Insulation material 141f Return port communication part (second notch)
141g Return port communication part (1st missing part)
H1 to H14 Heater DP1 Direct cooling discharge port (discharge port, first discharge port)
DP2 Indirect cooling discharge port (discharge port, second discharge port)
DP3 Direct cooling discharge port DP4 Indirect cooling discharge port P Confluence RP1 First return port (return port)
RP2 Second return port (return port)

Claims (10)

The first storage room whose temperature zone is set to the freezing temperature zone,
Below the first storage chamber, a second storage chamber whose temperature zone can be set to the refrigerating temperature,
Below the second storage chamber, a third storage chamber whose temperature zone can be set to the freezing temperature,
With
A first partition member provided between the first storage chamber and the second storage chamber,
A second partition member provided between the second storage chamber and the third storage chamber,
A third partition member located behind the second storage chamber and in front of at least a part of the evaporator.
Have,
In a refrigerator in which a compressor is arranged at the rear bottom of the third storage chamber,
At least a part of the evaporator is located below the second partition member,
The third partition member extends downward beyond the second partition member.
A refrigerator characterized in that the second partition member is detachably supported by the third partition member. In claim 1,
A refrigerator in which the first partition member is also detachably attached to the third partition member. In claim 1 or 2,
A refrigerator characterized in that a vacuum heat insulating material is housed in the first partition member and the second partition member. In any of claims 1 to 3,
The third partition member is detachably attached to the inner box and is attached to the inner box.
A refrigerator characterized in that a seal member is provided on the back side of the third partition member. In claim 4,
The left and right sides of the back surface of the third partition member have front-rear position changing portions.
A refrigerator characterized in that the sealing member is provided on a flat portion that is not the front-rear position changing portion. In claim 4,
A refrigerator characterized in that the seal member provided on the side surface of the third partition member continuously extends to the back surface side of the third partition member. In claim 4,
Of the seal members
The second storage chamber is located on the left and right sides of the back surface of the third partition member, rather than the portion above the back surface of the third partition member that seals between the third partition member and the first storage chamber. A refrigerator characterized in that the part that seals between and is on the rear side. In any of claims 1 to 7,
A refrigerator characterized in that the sealing member is made of an elastic soft porous body. In any of claims 1 to 8,
A refrigerator characterized in that an elastic adhesive is provided between the sealing member and the inner box or the third partition member. The first storage room whose temperature zone is set to the freezing temperature zone,
Below the first storage chamber, a second storage chamber whose temperature zone can be set to the refrigerating temperature,
Below the second storage chamber, a third storage chamber whose temperature zone can be set to the freezing temperature,
With
A first partition member provided between the first storage chamber and the second storage chamber,
A second partition member provided between the second storage chamber and the third storage chamber,
A third partition member located behind the second storage chamber and in front of at least a part of the evaporator.
In the refrigerator with
A seal member between the first partition member and the third partition member, between the second partition member and the third partition member, and between the third partition member and the inner box. Set up,
A refrigerator characterized in that the first partition member, the second partition member, and the third partition member are removable from the inner box.

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