JP2016014487A - refrigerator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a large-capacity refrigerator intended to prevent the generation of dew condensation in a vegetable compartment while ensuring maintainability.SOLUTION: A refrigerator is configured so that a vegetable-compartment rear surface wall body 17 and a freezer-compartment rear surface wall body 41 dividing a space into a cooling compartment 16, the vegetable compartment, and the freezer compartment are formed separately and individually detachable, the vegetable-compartment rear surface wall body 17 includes a foam insulation material 173, a surface of the foam insulation material 173 facing a cooling fan 19 is covered with a vegetable-compartment rear surface wall plate 172 formed of resin. With this configuration, it is possible to provide the refrigerator capable of suppressing the generation of dew condensation in the vegetable compartment, ensuring excellent maintainability, ensuring a smooth flow of cold air, and ensuring high quality and high reliability.

Description

  The present invention relates to a refrigerator having a cooling chamber on the back side of two storage rooms having different temperature bands such as a vegetable room and a freezing room.

  In general, a home refrigerator is configured by providing a plurality of storage rooms having different temperature bands, for example, a refrigerator room, a vegetable room, a freezer room, etc. in the refrigerator body. And the cooling room for cold air generation for cooling this refrigerator compartment, a vegetable compartment, a freezer compartment, etc. is provided in the back of the storage room.

  In many cases, the cooling chamber is provided in the back of one storage room, for example, a freezing room, but there is also a refrigerator provided in the back of two storage rooms, for example, a freezing room and a vegetable room.

  Refrigerators provided on the back of these cooling rooms across both the freezer compartment and the vegetable compartment are often found in refrigerators in which a vegetable compartment is placed between the refrigerator compartment and the freezer compartment of the refrigerator body. It is useful for the user who uses a lot of vegetables as a room refrigerator (see, for example, Patent Document 1).

  FIG. 40 shows a refrigerator described in Patent Document 1. A refrigerator room 101 is provided at the top of the refrigerator main body 100, and a freezer room 102 is provided at the bottom. A vegetable room 103 is provided at a substantially upper and lower central portion of the refrigerator book 100 between these two rooms. It is arranged. Then, a cooling chamber 104 is provided on the back of the refrigerator body 100 across the freezing chamber 102 and the vegetable chamber 103, and a cooler 105 and a cooling fan 106 are disposed in the cooling chamber 104. The generated cold air is supplied to the refrigerating room 101, the vegetable room 103, and the freezing room 102 by the cooling fan 106 and circulated, and the food stored in these rooms is cooled and stored.

  The vegetable compartment 101 is supplied with cold air after cooling the refrigerator compartment 104 and cools and preserves the vegetables stored in the vegetable compartment 103.

JP-A-9-113109

  However, the refrigerator having the cooling chamber 104 on the back side of the vegetable room 103 and the freezing room 102 is just generated by the cooler 105 with the cooling fan 106 positioned on the back side of the vegetable room 103. In the vegetable compartment 103, it is strongly subject to cold radiation due to low-temperature cold air, and condensation is likely to occur, and maintenance of the cooling fan 106 must be performed from the portion indicated by A in the drawing above the cooler 105, and the maintenance is extremely difficult. It tends to be a thing. Moreover, since the cool air from the cooling fan 106 blows out from the fan and collides with the vegetable room rear wall 103a located in front of the fan, the flow tends to be disturbed.

  Such a problem is disclosed in Japanese Patent Application Laid-Open No. 11-118314, that is, as shown in FIG. 41, the cooling chamber 104 is limited to the back of the freezer compartment 102 and the cooling fan 106 is not located at the back of the vegetable compartment 103. It is conceivable to solve by doing so. However, with such a configuration, the size of the cooler 105 provided in the cooling chamber 104 is limited and the cooling capacity is limited, and cannot be applied to a large capacity large refrigerator.

  Therefore, it becomes a big subject to make smooth the flow of the cool air from a cooling fan at the same time to make the above-mentioned dew condensation prevention and the improvement of maintenance nature compatible, even if it is a large sized refrigerator.

  The present invention has been made in view of the above points, and even a large refrigerator with a large refrigerating capacity can suppress dew condensation in a vegetable room, can perform maintenance well, and can smooth the flow of cold air. It is intended to provide.

  In order to solve the above-described conventional problems, the present invention provides a refrigerator main body with a refrigerator compartment, a vegetable compartment, and a freezer compartment, and a cooling compartment is provided on the back of both the vegetable compartment and the freezer compartment. And a cooler that generates cool air in the cooling chamber, and a cooling fan that supplies the cool air generated by the cooler to the refrigerator room, the vegetable room, and the freezer room, and further the vegetable room and the freezer room, The vegetable room back wall body and the freezer room back wall body partitioning the cooling room are separately configured to be detachable, and the vegetable room back wall body includes a foam heat insulating material, and the vegetable room back wall body The surface of the foam heat insulating material facing the cooling fan is covered with a resin vegetable room back wall plate.

  As a result, in this refrigerator, strong cold radiation due to low-temperature cold air from the cooling fan of the cooling room can be blocked by the heat insulating material, so that the vegetable room can be prevented from being cooled and dew condensation is generated, and the cooling room, the vegetable room and the freezing room are separated Since the vegetable room back wall body and the freezing room back wall body can be attached and detached separately, the cooling fan that faces the vegetable room back wall body of the vegetable room faces the freezer compartment back wall body as well as the freezer room. The maintenance of the cooler to be performed can be easily performed by attaching and detaching each wall body. Moreover, since the surface of the rear wall of the vegetable compartment facing the cooling fan is covered with a resin plate, the resin plate can be formed more accurately than a heat insulating material such as polystyrene foam, so it faces the cooling fan. The shape of the portion to be made can be accurately formed in accordance with the flow of cold air, and the flow of cold air can also be made smooth. In addition, since the surface of the heat insulating material such as the polystyrene foam on which the cold air flows is covered with a resin plate, condensed water generated in the cooling chamber during defrosting or the like adheres to the heat insulating material such as the polystyrene foam, It is possible to prevent wall surface deterioration caused by repeated thawing and cold air leakage due to surface deterioration.

  The refrigerator of the present invention is a high-quality and highly reliable refrigerator that can suppress dew condensation in the vegetable room, perform maintenance well, smooth the flow of cold air, and also suppress the occurrence of trouble due to dew condensation in the cooling room. It can be.

Front view of the refrigerator in Embodiment 1 of the present invention Front view when opening the refrigerator door in the first embodiment 2 is a cross-sectional view taken along line AA in FIG. 2 showing the refrigerator according to the first embodiment. BB sectional drawing of FIG. 2 which shows the refrigerator in Embodiment 1 Half-cut perspective view of the refrigerator in the first embodiment Schematic cross-sectional view for explaining the cold air flow of the refrigerator in the first embodiment Schematic front view for explaining the cold air flow of the refrigerator in the first embodiment The perspective view explaining the cool air flow of the cooling chamber back surface part of the refrigerator in Embodiment 1 The principal part expanded sectional view of FIG. 3 which shows the refrigerator in Embodiment 1 Schematic cross-sectional view for explaining the cold air flow in FIG. The principal part expanded sectional view of FIG. 4 which shows the refrigerator in Embodiment 1 The enlarged front view which shows the vegetable compartment and freezer compartment of the refrigerator in Embodiment 1 The enlarged front view which shows the cooling fan and cooler which were installed in the vegetable room and freezer compartment of the refrigerator shown in FIG. The expansion perspective view which shows the vegetable compartment back wall body and freezer compartment back wall body of the refrigerator in Embodiment 1 Sectional drawing which shows the back and cooling room of the vegetable compartment and freezer compartment of the refrigerator in Embodiment 1 Sectional drawing which shows the attachment structure of the vegetable compartment back wall body and freezer compartment back wall body of the refrigerator in Embodiment 1 Sectional view taken down from the main part of FIG. The exploded perspective view which shows the vegetable room back wall body of the refrigerator in the same Embodiment 1, a partition plate, and a freezer compartment back wall body Sectional drawing which decomposes | disassembles and shows the partition plate of the refrigerator in Embodiment 1 The perspective view which shows the state which attached the cooling fan to the partition plate of the refrigerator in Embodiment 1 The perspective view which looked at the state which attached the cooling fan to the partition plate of the refrigerator in Embodiment 1 from the back 21 is a perspective view when the cooling fan of FIG. 21 is removed. The disassembled perspective view which shows the vegetable compartment back wall body and cooling fan of the refrigerator in Embodiment 1 The perspective view which looked at the vegetable room back wall and cooling fan of the refrigerator in Embodiment 1 from the back The disassembled perspective view which shows the cooling fan unit of the refrigerator in Embodiment 1 The perspective view of the vegetable room back wall of the refrigerator in Embodiment 1 The exploded perspective view of the vegetable room back wall of the refrigerator in Embodiment 1 The perspective view which shows the freezer compartment back wall body of the refrigerator in Embodiment 1 The exploded perspective view of the freezer compartment back wall of the refrigerator in Embodiment 1 The perspective view which looked at the freezer compartment back wall body of the refrigerator in Embodiment 1 from the back side The exploded perspective view which looked at the freezer compartment back wall of the refrigerator in Embodiment 1 from the back The perspective view which decomposes | disassembles the freezer compartment back wall body of the refrigerator in the same Embodiment 1, and shows it with a cooler (A) The perspective view and sectional view which show the draining rib provided in the vegetable compartment side vegetable compartment back wall board of the vegetable compartment side of the refrigerator in Embodiment 1, (b) The perspective view which shows the draining rib provided in the fan housing | casing of the cooling fan. Figure and sectional view The front view which looked at the freezer compartment river cooling room of the refrigerator in Embodiment 1 from the front The principal part enlarged front view of FIG. (A)-(c) explanatory drawing explaining attachment of the cooling fan of the refrigerator in Embodiment 1 (A) (b) Explanatory drawing explaining the attachment of the vegetable compartment side vegetable compartment back wall board of the refrigerator in Embodiment 1 Explanatory drawing explaining attachment of the freezer compartment back wall body of the refrigerator in Embodiment 1 Control block diagram of the refrigerator in the first embodiment Schematic sectional view of a conventional refrigerator Schematic sectional view showing another example of a conventional refrigerator

In the first invention, a refrigerator body is provided with a refrigerator compartment, a vegetable compartment, and a freezer compartment, a cooling compartment is provided on the back of both the vegetable compartment and the freezer compartment, and cold air is provided in the cooling compartment. And a cooling fan that supplies the cold air generated by the cooler to the refrigeration room, the vegetable room, and the freezing room, and further partitions the vegetable room and the freezing room from the cooling room. The vegetable room back wall body and the freezer room back wall body are separately configured to be detachable, and the vegetable room back wall body includes a foam heat insulating material, and the cooling fan for the foam heat insulating material of the vegetable room back wall body The surface on the opposite side is covered with a resin-made vegetable room back wall plate.

  As a result, in this refrigerator, strong cold radiation due to low-temperature cold air from the cooling fan of the cooling room can be blocked by the heat insulating material, so that the vegetable room can be prevented from being cooled and dew condensation is generated, and the cooling room, the vegetable room and the freezing room are separated Since the vegetable room back wall body and the freezing room back wall body can be attached and detached separately, the cooling fan that faces the vegetable room back wall body of the vegetable room faces the freezer compartment back wall body as well as the freezer room. The maintenance of the cooler to be performed can be easily performed by attaching and detaching each wall body. Moreover, since the surface of the foam insulation of the vegetable compartment back wall facing the cooling fan is covered with the resin vegetable compartment back wall plate, the resin plate is formed more accurately than the foam insulation. As a result, the shape of the portion facing the cooling fan can be accurately formed according to the flow of the cold air, and the flow of the cold air can be made smooth. In addition, since the resin-made vegetable room back wall plate covers the surface of the foam insulation material on the side where the cold air flows, condensed water generated in the cooling chamber during defrosting adheres to the foam insulation material and freezes. It is also possible to prevent deterioration of the wall surface caused by repeated expansion and thawing and leakage of cold air due to surface deterioration at the seal portion.

  According to a second aspect of the present invention, in the first aspect, the vegetable room rear wall plate made of resin covering the surface of the vegetable room rear wall facing the cooling fan is attached to the cooling fan installation cooling chamber cover side. Thus, a passage portion is formed between the resin-made vegetable room back wall plate and the cooling fan installation cooling chamber cover.

  Thereby, a passage part can be constituted by a fan unit in which a resin-made vegetable room back wall plate and a cooling fan installation cooling chamber cover are integrated, and foaming of the vegetable room back wall body attached to the back of the vegetable room Compared to the case where a heat insulating material is pressed against the cooling chamber cover for installing the cooling fan to form a passage portion between them, the passage formed by the joint portion between the cooling fan installation cooling chamber cover and the resin vegetable room back wall plate The seal of the part can be made reliable and strong. In other words, the seal of the passage portion where the pressure of the cool air blown from the cooling fan becomes the highest can be ensured and strong. Therefore, it is possible to surely prevent the low-temperature cold air in the cooling chamber from leaking from the passage portion and flowing into the vegetable chamber or the like, and freezing a part of the vegetables in the vegetable chamber.

  According to a third aspect of the present invention, in the first or second aspect, the vegetable room rear wall body is foamed and insulated between the resin-made vegetable room side vegetable room rear wall board and the cooling fan side vegetable room rear wall board. The vegetable room side vegetable room back wall board which covers the said foam heat insulating material, and the cooling fan side vegetable room back wall board are set as the non-contact state.

  As a result, the low temperature of the resin cooling fan side vegetable room back wall board of the resin that becomes a cooling room and becomes low temperature when exposed to low temperature cold air in the cooling room is conducted to the vegetable room side vegetable room back wall board, and this lowers the temperature. It is possible to prevent the occurrence of condensation due to the low temperature of the vegetable room side vegetable room back wall plate.

  The fourth invention is the first to third inventions, wherein the foam heat insulating material constituting the back wall of the vegetable room controls the flow of cold air to the refrigerator compartment at a portion connected to the cold air passage from the cooling fan. The damper is configured to be in a non-contact state with the cooling fan side vegetable room rear wall plate that covers the surface of the foam heat insulating material on the side of the cooling fan and forms a passage portion.

As a result, it is possible to prevent the low temperature of the cooling fan side vegetable room back wall plate, which is exposed to the low temperature cold air in the passage portion, from being conducted to the damper and lowering the temperature, and this is connected to the refrigerator room. It is possible to reliably prevent the damper from becoming cold and causing dew condensation even if it is in contact with cold air at a relatively high temperature of the same level.

  5th invention is the 1st-4th invention. The cooling fan side vegetable room back wall board which covers the foam heat insulating material of the said vegetable room back wall board, and comprises a channel | path part is between the opening parts of a partition plate. It is assumed that a draining rib is provided above the sealing surface.

  As a result, it is possible to prevent the condensed water adhering to the cooling fan side vegetable compartment back wall plate from dropping on the sealing surface during defrosting, etc., and the condensed water is repeatedly generated by freezing, expansion, thawing and the like at the sealing portion. The deterioration of the sealing performance can be prevented, and good sealing performance can be ensured over a long period of time.

  A sixth invention is the first to fifth inventions, wherein the refrigerator body is mounted with a partition plate that partitions the vegetable compartment and the freezer compartment so as to communicate between the inner and outer boxes of the refrigerator body. Filled with foam insulation such as urethane and integrated with the refrigerator body, and provided with an opening in the rear part of the partition plate, and the opening of the vegetable compartment and the freezer compartment in the cooling room are made continuous by the opening. .

  As a result, the partition plate can be insulated with a foam heat insulating material such as urethane having high heat insulation like the refrigerator main body, so that the heat insulation is improved and the amount of cold radiation from the freezer compartment to the vegetable compartment can be strongly reduced. In addition to the low-temperature blocking effect from the cooling room by the heat insulating material on the back wall of the vegetable room, it is possible to more reliably prevent the occurrence of condensation due to the low temperature of the vegetable room, and at the same time, the partition plate is attached to the refrigerator body when molding the refrigerator body It can be integrated to improve productivity.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. The present invention is not limited to the embodiment.

(Embodiment 1)
1 to 39 show Embodiment 1 of the present invention. First, the overall configuration of the refrigerator will be described.

<Fridge body configuration>
1-6, the refrigerator which concerns on this Embodiment is equipped with the refrigerator main body 1 which opened the front, This refrigerator main body 1 has the outer case 2 mainly using the steel plate as shown in FIG. The inner box 3 is made of a hard resin such as ABS, and a foam heat insulating material 4 such as hard foam urethane filled between the outer box 2 and the inner box 3. The refrigerator main body 1 is divided into a plurality of storage rooms by a partition plate 5.6. The refrigerator main body 1 has a refrigerator compartment 7 at the top, a vegetable compartment 8 at the bottom of the refrigerator compartment 7, and a freezer compartment at the bottom. 9 is arranged, and it is a middle vegetable room type refrigerator. The front opening of each storage chamber is closed by a door 10, a door 11, and a door 12 so as to be opened and closed.

  A machine room 14 is provided in the upper rear region of the refrigerator body 1. The machine room 14 accommodates high-pressure components of the refrigeration cycle such as the compressor 15 and a dryer (not shown) for removing moisture.

  In addition, a cooling chamber 16 that generates cool air is provided on the back surface of the refrigerator body 1. The cooling chamber 16 is formed from the back surface of the freezing chamber 9 to the lower back surface of the vegetable chamber 8, and a vegetable chamber rear wall body 17 is provided between the vegetable chamber 8 and heat insulating properties by using polystyrene foam or the like. Insulated partitions.

  A cooler 18 is disposed in the cooling chamber 16, and a cooling fan 19 is disposed above the cooler 18. The cooling fan 19 forcibly circulates the cold air cooled by the cooler 18 to the refrigerating room 7, the vegetable room 8, and the freezing room 9 to cool each room. For example, the refrigerator compartment 7 is cooled to a temperature that does not freeze the food, usually 1 ° C. to 5 ° C., and the vegetable compartment 8 is cooled to a temperature 2 ° C. to 7 ° C. that is equal to or slightly higher than the refrigerator compartment 7. Further, the freezer compartment 9 is usually cooled to a freezing temperature range of −22 ° C. to −15 ° C. for frozen storage, and in some cases, for example, a low temperature of −30 ° C. or −25 ° C. to improve the frozen storage state. Sometimes it cools down.

  Further, a defrost heater 28 for defrosting frost and ice adhering to the cooler 18 and its periphery is disposed in the space below the cooler 18 in the cooling chamber 16 as shown in FIG. A drain pan 29 for receiving defrost water generated at the time of defrosting is disposed below the defrost heater 28, and the defrost water is discharged from the deepest part of the drain pan 29 to an evaporation tray outside the chamber through a drain tube (not shown). It is like that.

  Next, the cold air circulation configuration will be described mainly with reference to FIGS.

<Cooling air circulation path configuration>
As shown in FIG. 9 and the like, the cooling chamber 16 that generates the cold air has an opening downstream of the cooling fan 19 in the cooling chamber cool air passage portion 30 formed between the vegetable room back wall 17 and the refrigerator body 1. Then, the cool air is blown into each chamber through the cooling chamber cool air passage portion 30.

  7, 8, 10, and particularly FIG. 10, the upper part of the cooling chamber cool air passage portion 30 is formed in a substantially rear central portion of the back side of the refrigerator compartment 7 via the refrigerator compartment damper 31. Communicated with. As shown in FIGS. 7 and 8, a refrigerated cold air return passage 33 from the refrigeration chamber 7 is installed adjacent to the side of the refrigerated cold air passage 32, and the lower part thereof communicates with the vegetable compartment 8 and the cooling compartment 16. Yes.

  As shown in FIG. 7, the refrigerating chamber 7 is provided with a refrigerating / cooling air inlet 35 of a refrigerating / refrigerating air passage 32 at an appropriate position above the rear wall, and the refrigerating / refrigerating air that opens to the refrigerating / refrigerating air return passage 33 is provided at a lower position on the inner wall. A return port 36 is provided, and the cold air from the cooling chamber 16 is supplied to the refrigerating / refrigerating air passage 32 via the refrigerating chamber damper 31, and is supplied from the refrigerating / refrigerating air inlet 35 to the refrigerating chamber 7. On the other hand, the cold air after cooling in the refrigerating room is supplied from the refrigerating cold air return port 36 to the vegetable room 8 through the refrigerating cold air return passage 33 and circulates to the cooling room 16. As will be described later, the refrigerating chamber 7 is provided with a partial chamber at the lower portion thereof. As shown in FIG. 8, the partial chamber has a partial chamber damper 31a, a partial chamber cold air passage 32a, and a partial chamber cold air inlet. It is supplied via 35a.

  In this embodiment, as is clear from FIG. 9, the cooling room cold air passage portion 30, the refrigerated cold air passage 32, and the partial chamber cold air passage 32a are provided on the rear wall of the vegetable compartment rear wall 17 and the partition plate 6. And a return passage 38 (see FIG. 8) for connecting the refrigerated cold air return passage 33 to the vegetable compartment 8 and the cooling chamber 16 is formed. The refrigerator compartment damper 31 is connected to the forward passage 37. Is provided.

  As shown in FIG. 8, a communication passage 39 is formed between the refrigerated cold air return passage 32 and the refrigerated cold air return passage 33, and a part of the low temperature cold air flowing through the refrigerated cold air return passage 32 is refrigerated cold air return passage. 33 is mixed.

Further, as shown in FIG. 8, a cold air return duct 40 extending downward from the cooling fan 19 and the cooler 18 of the cooling chamber 16 is provided on the back surface of the freezer compartment 9. The upper portion communicates with the vegetable compartment 8 via the return passage 38 and the lower portion opens near the lower portion of the cooling chamber 16, and the cold air after cooling the vegetable compartment 8 is opened below the cold air via the cold return duct 40. To the cooling chamber 16.

  On the other hand, as shown in FIG. 10, the freezer compartment 9 has a freezing cold air inlet 42 communicating with the lower part of the cooling room cold air passage 30 at the back of the vegetable compartment rear wall 17 at the top of the freezer rear wall 41, A refrigerated cold air return port 43 is formed in the lower portion of the cooling chamber 16, and the cold air from the cooling chamber 16 is supplied from the lower portion of the cooling chamber cold air passage 30 through the refrigerated cold air inlet 42, and the cold air after cooling of the freezer compartment is cooled. Circulates to the cooling chamber 16 via the frozen cold air return port 43.

<Configuration of refrigerated room, vegetable room, freezer room>
As shown in FIG. 4 and the like, the refrigerator compartment 7 includes a plurality of storage shelves 52 and a partial chamber 53 that can be cooled to a semi-refrigeration temperature zone. A mouth 36 (both see FIG. 7) is provided. An operation unit 54 for setting the internal temperature of each room, ice making, rapid cooling, and the like is disposed at an appropriate side wall of the refrigerator compartment 7.

  As shown in FIGS. 7 and 8, the vegetable compartment 8 is a part closer to the left or right of the back wall, in this embodiment, the lower part of the right part when viewed from the front, and the return passage 38 part from the refrigerated cold return passage 33. An open vegetable cold air inlet 44 is provided, and a vegetable cold air return port 46 that opens to the return passage 38 and leads to the cooling chamber 16 is provided at a position substantially above the vegetable cold air inlet 44.

  The vegetable compartment 8 is provided with a vegetable storage case 48 as shown in FIG. 11 and the like. The vegetable storage case 48 includes a lower vegetable storage case 49a placed on the frame of the door 11 and a lower vegetable. The upper vegetable storage case 49b is placed on the storage case 49a. The vegetable compartment 8 is provided with a space between the vegetable storage case 48, the partition plate 6 below and the inner peripheral wall surface of the vegetable compartment 8, and the space is an air passage through which the cold air from the vegetable cold air inlet 44 flows. Is configured.

  Also. As already described with reference to FIG. 10, the freezer compartment 9 has a freezer cold air inlet 42 communicating with the lower portion of the cooler air passage portion 30 on the back of the vegetable compartment rear wall body 17 at the rear wall upper portion, and the lower wall lower portion. A freezing cold air return port 43 communicating with the freezing chamber 9 is formed. Although not shown in the structural diagram, a freezer damper is also incorporated at an appropriate position in the passage from the cooling chamber 16 to the freezer compartment 9. The freezer compartment 9 is also provided with a freezer compartment case 55 placed on the frame of the door 12 as shown in FIG.

  Next, the control configuration of the refrigerator will be described with reference to FIG.

<Control configuration>
FIG. 39 shows a control block diagram in the refrigerator of the present embodiment, 57 is a refrigerator temperature detecting means, 58 is a vegetable room temperature detecting means, 59 is a freezer temperature detecting means, both are formed of a thermistor, They are installed at appropriate places in the refrigerator compartment 7, the vegetable compartment 8, and the freezer compartment 9, respectively. Reference numeral 60 denotes a control unit that performs overall control of the entire refrigerator. The control unit 60 includes a microcomputer and the like, and the refrigerator compartment according to control software built in advance based on outputs from the refrigerator compartment temperature detector 57 and the freezer compartment temperature detector 59. The damper 31 and freezer compartment damper 34 are controlled to open and close, and the compressor 15 and the cooling fan 19 are driven to control each chamber to a set temperature.

  Next, the structure around the vegetable compartment 8, the freezing compartment 9, and the cooling compartment 16 located on the back thereof, which is a characteristic part of the present invention, will be described in detail with reference to FIGS.

<Composition of vegetable room and freezing room and cooling room>
The cooling chamber 16 is formed in the back of the vegetable compartment 8 and the freezer compartment 9 through the opening 20 (refer FIG. 18) of the partition plate 6 as shown in FIG.10 and FIG.15, and between the vegetable compartment 8 is vegetable. The room is separated by a room back wall 17 and is separated from the freezer compartment 9 by a freezer compartment wall 41.

  The partition plate 6 is configured as shown in an exploded perspective view of FIG. That is, the partition plate 6 is configured by filling the foam heat insulating material 4 (not shown in FIG. 19) between the upper surface member 6a and the lower surface member 6b, and an opening 20 is formed on the back side. . A cooling fan installation cooling chamber cover 19 a in which the above-described cooling fan 19 is assembled is assembled to the upper portion of the opening 20, and the cooler 18 of the cooling chamber 16 is located below. The opening 20 is formed larger than the projected area of the upper surface of the cooler 18 positioned below the opening 20, and a projecting piece 21 projecting downward is formed on the lower surface of the opening rear side edge portion of the lower surface member 6b. An upward projecting piece 22 that projects upward from the opening edge of the upper surface member 6a is formed. The partition plate 6 is embedded with a first heater 23 for preventing condensation, such as a sheathed heater, at the bottom of the vegetable compartment in front of the cooling fan 19.

  The partition plate 6 is formed in a hollow plate shape by combining the upper surface member 6 a and the lower surface member 6 b, and is mounted so as to communicate between the inner and outer boxes 2, 3 of the refrigerator body 1 and is foamed and insulated with the refrigerator body 1. The material 4 is filled and integrated with the refrigerator main body 1. Further, when the partition plate 6 is integrated into the refrigerator body 1, a jig (not shown) is pressed against the projecting piece 21 and the upward projecting piece 22, and is pressed as it is against the inner surface of the inner box 3 of the refrigerator body 1. 6 is positioned and held at a predetermined position, and the refrigerator main body 1 is integrated with the refrigerator main body 1 by filling and foaming the foam heat insulating material 4 between the upper and lower surface members 6a, 6b from the refrigerator main body by filling the refrigerator main body 1 with the foam heat insulating material 4. It is.

  In the figure, reference numeral 24 denotes a heat insulating shielding wall that covers the front portion of the opening edge of the opening 20 and is made of foamed polystyrene or the like, and one side piece thereof has a cold air return passage opening 25 provided in the partition plate 6. Corresponding passage openings 26 are formed. In addition, a tank installation portion 27 for supplying water to the ice making device provided in the freezer compartment 9 is formed on a portion of the partition plate 6 opposite to the cold air return passage opening 25.

  The vegetable room back wall body 17 and the freezer compartment back wall body 41 are separately formed and mounted so as to be individually detachable.

  First, the vegetable room back wall 17 will be described. As shown in FIGS. 15 to 17 and FIGS. 21 to 27, the vegetable room rear wall body 17 is made of a resin cooling fan side vegetable room rear wall board 172 and the resin-made vegetable room side vegetable room rear wall board 171. As shown in FIG. 23 and FIG. 24, a foam heat insulating material 173 such as polystyrene foam is disposed between the vegetable room side vegetable room rear wall plate 171 and the cooling fan side vegetable room rear wall plate 172. It is configured as a state, and the vegetable room 8 can be surely shielded from strong low-temperature radiation and low-temperature heat conduction by low-temperature cold air from the cooling fan 19. The cooling chamber cool air passage 30 described above is formed between the cooling fan side vegetable chamber rear wall plate 172 and the cooling fan installation cooling chamber cover 19a.

  In this embodiment, as shown in FIG. 23, the vegetable room side vegetable room back wall plate 171 and the foam heat insulating material 173 are integrated to form a vegetable room back unit X, and the cooling fan side vegetable room back wall plate 172 includes The cooling fan unit Y is configured by removably screwing the cooling fan installation cooling chamber cover 19a of the cooling fan 19 via a sealing material 64. Thus, the cooling chamber cool air passage portion 30 is formed by the cooling fan side vegetable chamber rear wall plate 172 of the cooling fan unit Y and the cooling fan installation cooling chamber cover 19a.

  Further, as shown in FIG. 36, the cooling fan 19 constituting the vegetable room back wall body 17 is integrally formed at the front lower portion of the cooling fan installation cooling chamber cover 19a, and the cooling fan side vegetable room back wall plate receiving piece. The tip of 19b is hooked and inserted into a locking piece 20a provided at the front edge of the partition plate opening 20, and is attached by rotating in the back direction around this portion. Accordingly, as shown in FIGS. 16 and 17, the cooling fan side vegetable room rear wall plate receiving piece 19b comes into contact with the lower end of the cooling fan side vegetable room rear wall plate 172, and the rear side of the cooling fan installation cooling chamber cover 19a. The lower end portion is attached and fixed in contact with the seal surface 412b at the upper end, which is the vegetable chamber side end portion of the cooler side freezer compartment rear wall plate 412 of the freezer compartment rear wall body 41 described later. In FIGS. 16 and 17, reference numeral 64 denotes a sealing material provided at each contact portion.

  Furthermore, the vegetable room back unit X which comprises the vegetable room back wall body 17 located in front of the said cooling fan unit Y has convex shape 171a of the vegetable room side vegetable room back wall board 171 lower part, as shown in FIG. As shown in the figure, the upper part of the partition plate opening 20 is engaged with the mouth of the partition plate opening, and the upper part of the partition plate opening 20 is rotated in the back direction. The foam insulation 173 has a cooling fan unit Y side cooling fan side vegetable room rear wall. The plate 172 is detachably attached to the plate 172.

  Thereby, the cooling fan unit Y and the vegetable room back surface unit X which become the vegetable room back wall body 17 are detachable, respectively.

  Furthermore, a second heater 50 for preventing condensation, such as a sheathed heater, is embedded in a surface of the vegetable room back wall 17 facing the cooling chamber 16 as shown in FIG. The second heater 50 is installed at a position facing the upper portion of the cooling chamber 16 and in a low temperature cooling chamber temperature zone below the refrigerating chamber damper 31 for opening and closing the cooling air from the cooling chamber 16 to the refrigerating chamber 7. Has been.

  Further, in the cooling chamber cool air passage portion 30, connector connecting portions of electrical members such as the cooling fan 19, the first heater 23 in the partition plate 6, the second heater 50 in the vegetable compartment back wall body 17 ( A box 51 (see FIG. 13) is installed, and electrical connection is made in the cooling chamber cool air passage section 30 which is the cooling chamber temperature zone.

  Further, as shown in FIG. 10, the vegetable room back wall body 17 incorporates the cold room damper 31 and the partial chamber damper 31 a described above above the cooling room cold air passage portion 30, and the cooling room cold air passage portion 30. The flow of cold air to the refrigerated cold air passage 32 and the partial chamber cold air passage 32a connected to is controlled. As shown in FIG. 23, the refrigerator compartment damper 31 and the partial chamber damper 31a are integrated into a twin damper configuration. As shown in FIGS. 22 to 23, the damper is installed above the cooling chamber cool air passage section 30. Compared to the cooling fan side vegetable room back wall plate 172 of the vegetable room back wall body 17 attached through the heat insulating material 61 and touched by low-temperature cold air from the cooling room 16 as a non-contact state by the damper built-in heat insulating material 61 It is set as the structure which insulates the refrigerator compartment damper 31 and the partial chamber damper 31a which will contact | connect cold air with high target temperature.

  On the other hand, the freezer compartment back wall 41 is configured as follows. That is, as shown in FIGS. 15 to 17 and FIGS. 26 to 32, the freezer compartment back wall body 41 includes a freezer compartment freezer compartment back wall plate 411 and a cooler side freezer compartment back wall plate formed of resin, respectively. 412 is formed by superposing and integrating them, and a freezer compartment whose upper end communicates with the cooling chamber cool air passage portion 30 on the front surface of the cooling fan installation cooling chamber cover 19a via the partition plate opening 20 therebetween. A cold air passage 62 is formed. The freezer cold air passage 62 has an upper end serving as a freezer cold air inlet 42 and a lower opening serving as a freezer cold air return port 43. Further, a refrigerated cold air outlet 63 is formed between them.

  In addition, as shown in FIG. 38, the freezer compartment back wall body 41 has a freezing chamber side freezer compartment back wall plate 411 with a projecting piece 411a at the lower end thereof inserted into the engaging piece 9a at the bottom of the freezer compartment, and this insertion portion is a fulcrum. The upper part is rotated to the cooler 18 side and is detachably attached to the back of the freezer compartment 9.

  As shown in FIGS. 16 and 17, the cooler-side freezer compartment back wall plate 412 is positioned in the opening 20 of the partition plate 6 as shown in FIGS. It forms a sealing surface 412b that presses against the lower end portion of the cooling fan cover 19a for cooling the fan 19 and seals between the two.

  On both sides of the partition plate opening 20 facing the seal surface 412b of the cooler side freezer compartment back wall plate 412, as shown in FIGS. 34 and 35, the seal surface 412b of the cooler side freezer compartment back wall plate 412 and A partition seal surface 6c is formed which is flush with the connection seal surface where the lower end of the cooling fan installation cooling chamber cover 19a is in contact with the partition seal surface 6c and the seal surface 412b of the cooler side freezer compartment back wall plate. The cooling fan installation cooling chamber cover lower end and the cooler side freezing chamber back wall plate 412 are sealed.

  Further, the seal surface 412b of the cooler-side freezer compartment back wall plate 412 is formed in the front-rear direction as is apparent from FIG. 16 and the like, and does not narrow the cooling chamber cool air passage portion 30 located on the front side. When the cooling fan installation cooling chamber cover 19a and the cooler-side freezer compartment back wall plate 412 are pivotally mounted, the lower end of the cooling fan installation cooling chamber cover 19a and the cooler-side freezer compartment are formed. A seal surface 412b of the back wall plate 412 is brought into contact with each other so as to be sealed.

  Further, as shown in FIG. 33, draining ribs 19c are formed on the lower part of the cooling fan side vegetable room rear wall plate 172 and on the lower part of the cooling fan installation cooling chamber cover 19a of the cooling fan 19, respectively. As is apparent from the drawing, the draining rib 19c is provided between the cooling fan side vegetable compartment rear wall plate receiving piece 19b of the cooling fan installation cooling chamber cover 19a located below the cooling fan side vegetable compartment rear wall plate 172. The cooling member 64 and the cooling fan cover cooling chamber cover 19a and the upper end sealing surface 412b of the cooler side freezing chamber back wall plate are positioned above the sealing member 64.

  Furthermore, the seal surface 412b of the cooler side freezer compartment back wall plate 412 is located above the upper end of the core portion 18a of the cooler 18 as is apparent from FIG.

  About the refrigerator comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  First, the operation of the refrigeration cycle will be described.

  The refrigeration cycle is operated by a signal from the control unit 60 according to the set temperature in the refrigerator, and the cooling operation is performed. The high-temperature and high-pressure refrigerant discharged by the operation of the compressor 15 is condensed to some extent by a condenser (not shown), and further, refrigerant piping (not shown) disposed on the side and rear surfaces of the refrigerator and the front opening of the refrigerator. Etc.), while condensing and liquefying while preventing condensation in the refrigerator, it reaches a capillary tube (not shown). Thereafter, the capillary tube is depressurized while exchanging heat with a suction pipe (not shown) to the compressor 15 and becomes a low-temperature and low-pressure liquid refrigerant and reaches the cooler 18 in the cooling chamber. Here, the refrigerant in the cooler 18 evaporates, and cool air for cooling each storage chamber is generated in the cooling chamber 16 having the cooler 18.

  Next, the cooling operation by the cold air circulation will be described.

The low temperature cold air generated in the cooling chamber 16 is sent from the cooling chamber cold air passage section 30 to the refrigerating room 7 and the freezing room 9 by the cooling fan 19, and the cold air supplied to the refrigerating room 7 cools the refrigerating room 7. After that, it is supplied to the vegetable room 8 and each room is cooled to the set temperature. Then, the cold air after cooling each chamber returns to the cooling chamber 16 again, is cooled by the cooler 18, and is circulated to each chamber by the cooling fan 19. In addition, the cold air supply to each of the chambers is performed by the control unit 60 operating / stopping the compressor 15 and the cooling fan 19 based on the temperatures detected by the refrigerator temperature detecting means 57 and the freezer temperature detecting means 59, and the refrigerator temperature damper 31. The freezer damper 34 is controlled to open and close so that each chamber is maintained in a set temperature range.

  Next, the effect in the structure around the cooling room 16, the vegetable room 8, and the freezing room 9 which produces | generates the said cold air is demonstrated.

  First, in this refrigerator, the vegetable room back wall body 17 and the freezer room back wall body 41 partitioning between the cooling room 16 and the vegetable room 8 and the freezer room 9 are separately configured, and can be individually attached and detached. Therefore, maintenance becomes easy. That is, the cooler 18 or the cooling fan 19 provided in the cooling chamber 16 can be easily maintained because the front surface of the cooling chamber 16 is opened if the corresponding wall body is attached or detached. For example, in the case of the vegetable room back wall 17, the vegetable room back unit X constituting a part thereof can be removed, and then the cooling fan side vegetable room back wall plate 172 can be removed from the front surface of the cooling fan unit Y screwed. In this case, the cooling fan 19 can be maintained. Moreover, in the case of the freezer compartment back wall body 41, since the refrigerator side freezer compartment back wall plate 412 and the freezer compartment side freezer compartment back wall plate 411 are unitized, the freezer compartment can be obtained by a single operation. The back wall body 41 can be removed, and maintenance of the cooler 18 can be performed more easily.

  The cooler-side freezer compartment back wall plate 412 and the freezer compartment-side freezer compartment back wall plate 411 are integrated into a unit, and connected to the cooler chamber cool air passage section 30 between which cool air from the cooling fan is guided. Since the freezer compartment cold air passage 62 is formed, the low temperature cold air from the cooling fan 19 can be guided to an arbitrary position in the freezer compartment 9, and the freezer compartment can be cooled efficiently.

  The cooling chamber 16 is configured such that the lower part of the cooling fan installation cooling chamber cover 19a of the cooling fan 19 is brought into direct contact with the vegetable room side end of the cooler side freezing room back wall plate 412 of the freezing room back wall 41. Therefore, the front-rear width of the opening 20 of the partition plate 6 that is a part of the cooling chamber 16 can be increased. That is, in this embodiment, the vegetable room side end of the refrigerator-side freezer compartment back wall plate 412 of the freezer compartment back wall 41 is used as a seal surface 412b, and the cooling fan 19 is installed on the seal surface 412b. Since the lower end of the cooling chamber cover 19a is brought into contact with and sealed between the two, the vegetable chamber side end of the cooler side freezing chamber rear wall plate 412 is the edge of the cooling chamber opening 20 at the rear of the partition plate 6. It is no longer necessary to use this opening edge as a sealing surface for connection with the cooling chamber cover 19a for installing the cooling fan, and the front edge of the cooling chamber opening 20 at the rear of the partition plate is widened forward to increase the front-rear width and the like. can do. As a result, the cooler 18 located below the cooling chamber opening 20 also increases its front-rear width and the like to increase its capacity, and it is possible to further increase the refrigerating capacity, that is, the capacity of the refrigerator. In addition, the cooler 18 can be easily incorporated into the cooling chamber 16 to improve productivity.

  Furthermore, since the vegetable room side edge part itself of the cooler side freezer compartment back wall board 412 of the freezer compartment back wall body 41 is used as the sealing surface 412b, the vegetable room side edge part of the above-described cooler side freezer compartment rear wall board 412. Is attached to the edge portion of the cooling chamber opening 20 of the partition plate 6 and the opening edge is used as a sealing surface for connection with the cooling fan installation cooling chamber cover 19a, so that the sealing performance is improved.

Further, as described above, the vegetable room side end portion of the cooler side freezer compartment back wall plate 412 of the freezer compartment back wall body 41 is used as a seal surface 412b, and the cooling fan cover for the cooling fan 19 is installed on the seal surface 412b. Even if the lower end of 19a is brought into contact and the both are sealed, the cooling fan side vegetable room rear wall plate 172 and the freezer compartment rear wall body 41 of the vegetable room rear wall body 17 can be attached and detached from either side. Since there is no restriction on the order of attachment and detachment, the maintainability can be improved.

  That is, the seal surface 412b of the vegetable room side end of the cooler side freezer compartment back wall plate 412 and the seal surface of the lower end of the casing of the cooling fan installation cooling chamber cover 19a are in contact with each other so as to face each other. Therefore, even if it is removed from the cooler side freezer compartment back wall plate 412 or removed from the cooling fan installation cooling chamber cover 19a side of the cooling fan 19, the other party does not interfere with the removal. Therefore, it can be attached and detached from either side. For example, when maintenance of the cooling fan 19 is performed, there is no restriction such as removing the back wall 41 of the freezer compartment and then removing the cooling fan 19. improves.

  The vegetable room side end of the cooler side freezer compartment back wall plate 412 is located in the opening 20 of the partition plate 6 and is flush with the partition seal surfaces 6c formed on both sides of the opening 20 of the partition plate 6. Since the sealing surface 412b with which the cooling fan installation cooling chamber cover 19a of the cooling fan 19 comes into contact is formed, the vegetable chamber side end that becomes the sealing surface 412b of the cooler side freezing chamber rear wall plate 412 is movable. Even if it is a thing, since the partition seal surfaces 6c provided on both sides of the opening 20 of the partition plate 6 do not move, it is possible to prevent a sealing failure that tends to occur when the seal surface is formed of a movable member. And a reliable seal can be realized.

  Further, since the seal surface 412b formed at the vegetable room side end of the cooler side freezer compartment back wall plate 412 is formed in the front-rear direction surface, the size of the seal portion in the front-rear direction can be reduced. In addition, sealing can be performed without hindering the flow of cold air flowing in the vertical direction, and downsizing of the device can be promoted.

  In addition, since the seal surface 412b formed at the vegetable room side end of the cooler side freezer compartment back wall plate 412 is positioned above the upper end of the core 18a of the cooler 18, it can be used during defrosting, etc. Even if condensed water is generated in the core portion 18a of the cooler 18, it can be prevented from dripping onto the seal surface 412b. As a result, it is possible to prevent the deterioration of the sealing performance caused by the dripped dew condensation water being repeatedly frozen and expanded and defrosted at the sealing portion, and a good sealing performance can be ensured over a long period of time.

  Similarly, the cooling fan 19 has a draining rib 19c at a portion located above the seal surface 412b formed by the vegetable room side end of the cooler side freezer compartment back wall plate 412 of the cooling fan installation cooling chamber cover 19a. The dew condensation water generated in the cooling fan installation cooling chamber cover 19a during defrosting can be prevented from dripping onto the seal surface 412b. It is possible to prevent the deterioration of the sealing performance caused by repeating the above, and to ensure a good sealing performance for a long period of time.

On the other hand, the cooling chamber cool air passage section 30 for guiding the cool air from the cooling fan 19 to the refrigerator compartment 7 and the freezer compartment 9 is made of resin cooling on the surface of the foam heat insulating material 173 of the vegetable room rear wall body 17 constituting the cooling chamber cool air passage section 30. Since the fan side vegetable room rear wall plate 172 is arranged and covered, the flow of cold air can be made smoother than that in which the foam heat insulating material 173 is exposed as it is, and at the same time, the passage wall body Cold air leakage due to surface deterioration or surface deterioration at the seal portion can be prevented. That is, the cooling fan side vegetable room rear wall plate 172 made of a resin plate can be molded with higher accuracy than the foam heat insulating material 173, and therefore the shape of the portion facing the cooling fan 19 is accurately adjusted to the shape of the cold air flow. It can be formed well and the flow of cold air can be made smooth. In addition, since the foam heat insulating material 173 penetrates when moisture adheres to the surface thereof, the condensed water generated at the time of defrosting penetrates and repeats freezing expansion / defrosting on the surface to cause surface deterioration and seal deterioration. However, since the resin cooling fan side vegetable compartment back wall plate 172 does not allow moisture to penetrate, this does not occur, and it is possible to reliably prevent cold air leaks due to deterioration of the surface of the passage wall and deterioration of the seal portion. Can be prevented.

  Of the vegetable room rear wall body 17, the cooling fan side vegetable room rear wall board 172 of the vegetable room side vegetable room rear wall board 171 and the cooling fan side vegetable room rear wall board 172 is detachably attached to the cooling fan 19 side. Since it is attached, the sealing of the cooling chamber cool air passage portion 30 formed between the cooling fan side vegetable chamber rear wall plate 172 and the cooling fan installation cooling chamber cover 19a can be made reliable and strong. That is, since the cooling fan side vegetable compartment back wall plate 172 and the cooling fan installation cooling chamber cover 19a are formed of resin, the joint portion between them is the joining of the resins that are easy to obtain the dimensional accuracy described above. The cooling fan installation cooling chamber cover 19a is pressed against the foam heat insulating material 173 of the vegetable room back wall 17 and sealed between them, which can be made more reliable and stronger. Therefore, the seal of the cooling chamber cool air passage portion 30 where the pressure of the cool air blown from the cooling fan 19 becomes the highest can be ensured and strong. Accordingly, it is possible to reliably prevent low-temperature cold air from leaking from the cooling chamber cold air passage portion 30 and flowing into the vegetable chamber 8 and the like, and freezing a part of the vegetables in the vegetable chamber 8.

  Further, the vegetable room 8 has a cooling room cold air passage portion 30 located on the back surface thereof, and receives strong cold radiation by the low temperature cold air of the part, and this part is easily lowered in temperature. However, since the vegetable room back wall body 17 has the foam heat insulating material 173 between the vegetable room side vegetable room back wall board 171 and the cooling fan side vegetable room back wall board 172, from the said cooling room temperature range. It is possible to reliably insulate strong cold radiation to the vegetable compartment 8 due to the low-temperature cold air, and to suppress the occurrence of dew condensation in the vegetable compartment 8. Thereby, the vegetables in the vegetable compartment 8 can be cooled and stored in a good state.

  In addition, the vegetable room back wall body 17 is non-contact where the foam heat insulating material 173 is located between the vegetable room side vegetable room back wall board 171 and the cooling fan side vegetable room back wall board 172 so that they do not contact each other. Since it is in a state, the low temperature of the cooling fan side vegetable room back wall plate 172 exposed to the low temperature cold in the cooling chamber 16 is conducted to the vegetable room side vegetable room back wall plate 171 and this is lowered. It is possible to prevent the occurrence of condensation due to the low temperature of the vegetable room side vegetable room back wall plate 171.

  Further, the vegetable room back wall 17 incorporates dampers 31 and 31a for controlling the flow of cool air from the cool room cool air passage 30 to the refrigerating room 7 and the like. It is possible to prevent occurrence and occurrence. That is, the dampers 31, 31 a are provided with a heat insulating material 61 for installing the damper between the cooling fan side vegetable room rear wall plate 172 which is exposed to the cold air of the cooling room cold air passage portion 30 to lower the temperature. In other words, the dampers 31 and 31a and the cooling fan side vegetable compartment back wall plate 172 are in a non-contact state. Therefore, it is possible to prevent the low temperature of the cooling fan side vegetable room rear wall plate 172 exposed to the low temperature cold air in the cooling room cold air passage section 30 from being conducted to the dampers 31 and 31a and lowering the temperature. . Therefore, it is possible to reliably prevent the dampers 31 and 31a connected to the refrigerated cold air passage 32 and coming into contact with the relatively high temperature cold air from the low temperature and causing condensation.

  Moreover, even if the low temperature in the vegetable compartment 8 is suppressed as described above, if this state continues for a long time, the vegetable compartment 8 may drop to a temperature at which condensation is likely to occur. In this refrigerator, the controller 60 causes the second heater 50 provided in a portion facing the low temperature zone on the back of the vegetable compartment to generate heat. Thereby, the temperature fall of the vegetable room back surface by the cold radiation from a low temperature zone is suppressed reliably, and the situation which leads to dew condensation can be avoided.

The vegetable compartment 8 is also easily cooled by receiving cold radiation from the freezer compartment 9, but in this embodiment, the influence of the cold radiation from the freezer compartment 9 is greatly reduced by the following configuration. That is, the partition plate 6 is mounted so as to communicate between the inner and outer boxes 2 and 3 of the refrigerator main body, and is filled with the foam heat insulating material 4 such as urethane together with the refrigerator main body 1 when the refrigerator main body is molded. This is a structured. Thereby, the partition plate 6 can also be thermally insulated by the foam heat insulating material 4 such as urethane having high heat insulating properties similarly to the refrigerator main body 1, and the heat insulating property is greatly improved. Thereby, the amount of cold radiation from the freezer compartment 9 to the vegetable compartment 8 can be reduced strongly. At the same time, since the thickness of the partition plate 6 itself can be reduced, the capacity of the vegetable compartment 8 or the freezer compartment 9 can be increased accordingly. In addition, in this embodiment, the first heater 23 is also provided in the partition plate 6 that partitions the vegetable compartment 8 and the freezer compartment 9 so that the first heater 23 and the second heater 50 generate heat. 9 can more effectively suppress the influence of cold radiation from 9 and can reliably prevent the deterioration of vegetables due to the occurrence of condensation in the vegetable room.

  Although the embodiment of the present invention has been described above, the configuration described in the above embodiment is shown as an example for carrying out the present invention, and various modifications can be made within the scope of achieving the object of the present invention. Needless to say.

  For example, in this embodiment, the cooling fan 19 is attached to the cooling fan installation cooling chamber cover 19a. However, the cooling fan 19 is attached and fixed to the inner box 3 on the rear side of the cooling chamber, and the blades of the cooling fan 19 are fixed. It is good also as a structure which makes only a part face the fan opening part of the cooling chamber cover 19a for cooling fan installation.

  In this embodiment, the cooling chamber 16 is described as an example in which the cooling chamber 16 is located on the back side of the vegetable chamber 8 and the freezing chamber 9. What is the storage room as long as the cooling room is provided across the two storage rooms in different temperature zones, which may be arranged adjacent to each other and across the two. It may be. Therefore, the form of the refrigerator is not limited to the middle vegetable type refrigerator, and the vegetable room may be at the lowermost part or may be an internal refrigerator without a vegetable room.

  The refrigerator according to the present invention can suppress dew condensation in the vegetable room, can perform maintenance well, can smooth the flow of cold air, and can also suppress the occurrence of trouble due to dew condensation in the cooling room, and is high quality and highly reliable. It can be a refrigerator. Therefore, it can be widely applied to many uses such as commercial refrigerators and showcases as well as home use.

1 Refrigerator body 5, 6 Partition plate 7 Refrigerated room (storage room)
8 Vegetable room (storage room)
9 Freezer room (storage room)
16 Cooling room 17 Vegetable room back wall 18 Cooler 18a Core part 19 Cooling fan 19a Cooling fan cover for cooling fan installation 19b Cooling fan side vegetable room back wall plate receiving piece 19c Draining rib 20 Opening (partition plate opening, for cooling room) Opening)
30 Cooling room cool air passage (passage)
31 Refrigerating Room Damper 41 Freezer Room Back Wall 61 Damper Insulating Material 62 Freezer Room Cooling Air Path 63 Frozen Cold Air Outlet 171 Vegetable Room Side Vegetable Room Back Wall Plate 172 Cooling Fan Side Vegetable Room Back Wall Plate 173 Foam Insulating Material 411 Refrigeration Room side freezer compartment rear wall plate 412 Cooler side freezer compartment rear wall plate 412b Seal surface X Vegetable room rear unit Y Cooling fan unit

First, the vegetable room back wall 17 will be described. As shown in FIGS. 15 to 17 and FIGS. 21 to 27, the vegetable room rear wall body 17 is made of a resin cooling fan side vegetable room rear wall board 172 and the resin-made vegetable room side vegetable room rear wall board 171. As shown in FIG. 23 and FIG. 24, a foam heat insulating material 173 such as polystyrene foam is disposed between the vegetable room side vegetable room rear wall plate 171 and the cooling fan side vegetable room rear wall plate 172. It is configured as a state, and the vegetable room 8 can be surely shielded from strong low-temperature radiation and low-temperature heat conduction by low-temperature cold air from the cooling fan 19. The cooling chamber cool air passage 30 described above is formed between the cooling fan side vegetable chamber rear wall plate 172 and the cooling fan installation cooling chamber cover 19a. And the cooling fan side vegetable room back wall board 172 makes the surface which opposes the cooling fan 19 frustoconical shape, and the part which opposes the motor arrange | positioned in the center of the cooling fan 19 which is an axial fan is a plane, a circumference. The part which opposes the blade | wing arrange | positioned in is made into the inclined surface.

On the other hand, the cooling chamber cool air passage section 30 for guiding the cool air from the cooling fan 19 to the refrigerator compartment 7 and the freezer compartment 9 is made of resin cooling on the surface of the foam heat insulating material 173 of the vegetable room rear wall body 17 constituting the cooling chamber cool air passage section 30. Since the fan side vegetable room rear wall plate 172 is arranged and covered, the flow of cold air can be made smoother than that in which the foam heat insulating material 173 is exposed as it is, and at the same time, the passage wall body Cold air leakage due to surface deterioration or surface deterioration at the seal portion can be prevented. That is, the cooling fan side vegetable room rear wall plate 172 made of a resin plate can be molded with higher accuracy than the foam heat insulating material 173, and therefore the shape of the portion facing the cooling fan 19 is accurately adjusted to the shape of the cold air flow. It can be formed well and the flow of cold air can be made smooth. Specifically, the cool air discharged from the blades arranged around the circumference of the cooling fan 19 is smoothly flowed in the circumferential direction by the inclined surface of the cooling fan side vegetable room rear wall plate 172, and above the cooling room cold air passage 30. The refrigerated cold air passage 32, the partial chamber cold air passage 32a, and the lower freezer compartment cold air passage 62 are divided into two directions so that they can flow efficiently and smoothly. In addition, since the foam heat insulating material 173 penetrates when moisture adheres to the surface thereof, the condensed water generated at the time of defrosting penetrates and repeats freezing expansion / defrosting on the surface to cause surface deterioration and seal deterioration. However, since the resin cooling fan side vegetable compartment back wall plate 172 does not allow moisture to penetrate, this does not occur, and it is possible to reliably prevent cold air leaks due to deterioration of the surface of the passage wall and deterioration of the seal portion. Can be prevented.

Claims (6)

A refrigerator that is provided with a refrigerator compartment, a vegetable compartment, and a freezer compartment in the refrigerator body, a cooling compartment is provided on the back side of both the vegetable compartment and the freezer compartment, and a cooler that generates cold air in the cooling compartment; A cooling fan for supplying cold air generated by the cooler to the refrigeration room, the vegetable room, and the freezing room; and a vegetable room back wall body that partitions the vegetable room and the freezing room and the cooling room; The freezer compartment back wall is separately configured to be detachable, and the vegetable compartment back wall includes a foam insulation, and the surface of the vegetable compartment back wall facing the cooling fan of the foam insulation Is a refrigerator covered with a resin-made vegetable room back wall board. The resin-made vegetable room back wall plate that covers the surface of the vegetable room back wall facing the cooling fan is attached to the cooling fan installation cooling chamber cover side, and the resin vegetable room back wall plate is cooled. The refrigerator according to claim 1, wherein a passage portion is formed between the fan installation cooling chamber cover. Each of the vegetable room back wall bodies is made of a resin-made vegetable room side vegetable room back wall plate and a cooling fan side vegetable room back wall plate. The refrigerator according to claim 1 or 2, wherein the vegetable room back wall plate and the cooling fan side vegetable room back wall plate are in a non-contact state. The foam insulation that forms the rear wall of the vegetable room incorporates a damper that controls the flow of cold air to the refrigerator compartment at the portion connected to the cold air passage from the cooling fan, and the damper is on the cooling fan side of the foam insulation. The refrigerator of any one of Claims 1-3 made into a non-contact state with the cooling fan side vegetable compartment back wall board which covers the surface of and comprises a channel | path part. The cooling fan side vegetable room back wall plate that covers the foam heat insulating material of the vegetable room back wall plate and that constitutes the passage portion has a structure in which draining ribs are provided above the sealing surface between the opening portion of the partition plate. The refrigerator of any one of 1-4. The refrigerator main body is fitted with a partition plate that partitions the vegetable compartment and the freezer compartment so as to communicate between the inner and outer boxes of the refrigerator main body. The refrigerator according to any one of claims 1 to 5, wherein an opening is provided in a rear portion of the plate, and the rear portion of the vegetable compartment and the rear portion of the freezer compartment of the cooling chamber are made continuous by the opening.

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