JP6909966B2 - refrigerator - Google Patents

Description

The present invention relates to a refrigerator having a cooling chamber on the back surface of two storage chambers having different temperature zones such as a vegetable compartment and a freezing chamber.

Generally, a household refrigerator is configured by providing a plurality of storage chambers having different temperature bands, for example, a refrigerator compartment, a vegetable compartment, a freezing chamber, and the like in the refrigerator body. A cooling chamber for generating cold air for cooling the refrigerating chamber, the vegetable compartment, the freezing chamber, and the like is provided on the back surface of the storage chamber.

The cooling chamber is often provided on the back of one storage chamber, for example, a freezing chamber, but some refrigerators are provided on the back of two storage chambers, for example, a freezing chamber and a vegetable compartment.

Refrigerators with the above cooling chambers straddling both the freezing compartment and the vegetable compartment and provided on the back of these are often found in refrigerators in which the vegetable compartment is located between the refrigerator compartment and the freezing chamber of the main body of the refrigerator. It is useful for users who use a lot of vegetables as a room refrigerator (see, for example, Patent Document 1).

FIG. 40 shows the refrigerator described in Patent Document 1, in which a refrigerator compartment 101 is provided in the upper part of the refrigerator main body 100 and a freezing chamber 102 is provided in the lower portion, and a vegetable compartment 103 is provided in a substantially central portion above and below the refrigerator book 100 between the two chambers. It is arranged. A cooling chamber 104 is provided on the back surface of both the freezer chamber 102 and the vegetable compartment 103 of the refrigerator main body 100, and a cooler 105 and a cooling fan 106 are arranged in the cooling chamber 104. The generated cold air is supplied to the refrigerating chamber 101, the vegetable compartment 103, and the freezing chamber 102 by the cooling fan 106 and circulated, and the food stored in each of these chambers is cooled and stored.

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

Japanese Unexamined Patent Publication No. 9-113109

However, a refrigerator having a cooling chamber 104 on the back surface of both the vegetable compartment 103 and the freezing chamber 102 has a cooling fan 106 located on the back surface of the vegetable compartment 103 and has just been generated by the cooler 105. Condensation is likely to occur in the vegetable compartment 103 due to the strong cold radiation from the low-temperature cold air, and the maintenance of the cooling fan 106 has to be performed from the part shown in A on the drawing above the cooler 105, which is extremely difficult to maintain. It tends to be a thing. Moreover, the cold air from the cooling fan 106 is blown out from the fan and at the same time collides with the vegetable compartment back wall 103a located in front of the fan, so that the flow tends to be turbulent.

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 surface of the freezing chamber 102, and the cooling fan 106 is not located on the back surface portion of the vegetable compartment 103. It can be solved 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 restricted, so that it cannot be applied to a large refrigerator having a large capacity.

Therefore, even in a large refrigerator, it is a big problem to achieve both the prevention of dew condensation and the improvement of maintainability as described above and at the same time to smooth the flow of cold air from the cooling fan.

The present invention has been made in view of these points, and even a large refrigerator having a large refrigerating capacity can suppress dew condensation in the vegetable room, can perform good maintenance, and can smooth the flow of cold air. The purpose is to provide.

In order to solve the above-mentioned conventional problems, the present invention provides at least a refrigerating room, a vegetable room, and a freezing room in the refrigerator body, and a cooling room is provided on the back surface of both the vegetable room and the freezing room. A cooler that generates cold air and a cooling fan that supplies the cold air generated by the cooler to the refrigerator compartment, the vegetable compartment, and the freezer chamber are arranged in the cooling chamber, and the vegetable compartment and the cooling chamber are arranged. A partition plate filled with a foam insulating material that separates the vegetable compartment back wall body that partitions the space, the freezer compartment back wall body that partitions the freezer compartment and the cooling chamber, and the vegetable compartment and the freezer compartment. The vegetable compartment back wall and the freezer compartment back wall are detachably attached to each other, and the partition plate is integrated with the main body by filling and foaming the foam insulating material in the main body. The rear wall of the vegetable compartment is composed of a detachable rear unit of the vegetable compartment and a part of the cooling fan unit, and the cooling fan unit is a cooling fan side forming a surface of the cooling chamber on the cooling fan side. It is provided with a vegetable compartment back wall plate and a cooling chamber cover for installing the cooling fan, and the vegetable compartment rear wall body is composed of the vegetable compartment rear unit and the cooling fan side vegetable compartment rear wall plate. The back wall of the freezer compartment is configured by integrally uniting the back wall plate of the freezer compartment side and the back wall plate of the freezer compartment on the cooler side, and the cooling chamber is the back wall of the freezer compartment on the cooler side which is separately configured. The structure is formed by sealing the plate and the cooling fan unit.

As a result, in this refrigerator, strong cold radiation from the cooling fan of the cooling room due to low temperature cold air is blocked by a heat insulating material to prevent the vegetable room from becoming cold and dew condensation, and the back wall of the vegetable room is immediately affected by the flow of cold air. It can be formed into a radiant product, and the flow of cold air can be made smooth.

The refrigerator of the present invention can suppress dew condensation in the vegetable chamber, smooth the flow of cold air, and can be a high-quality and highly reliable refrigerator.

Front view of the refrigerator according to the first embodiment of the present invention Front view of the refrigerator in the first embodiment when the door is opened. AA sectional view of FIG. 2 showing a refrigerator according to the first embodiment. BB sectional view of FIG. 2 showing the refrigerator according to the first embodiment. Half-cut perspective view of the refrigerator according to the first embodiment. Schematic cross-sectional view for explaining the cold air flow of the refrigerator according to the first embodiment. Schematic front view illustrating the flow of cold air from the refrigerator according to the first embodiment. A perspective view illustrating the flow of cold air in the back portion of the cooling chamber of the refrigerator according to the first embodiment. An enlarged cross-sectional view of a main part of FIG. 3 showing a refrigerator according to the first embodiment. Schematic cross-sectional view for explaining the cold air flow in FIG. An enlarged cross-sectional view of a main part of FIG. 4 showing a refrigerator according to the first embodiment. Enlarged front view showing the vegetable compartment and the freezing compartment of the refrigerator in the first embodiment. An enlarged front view showing a cooling fan and a cooler installed on the back of the vegetable compartment and the freezing chamber of the refrigerator shown in FIG. An enlarged perspective view showing the back wall of the vegetable compartment and the back wall of the freezing chamber of the refrigerator according to the first embodiment. Cross-sectional view showing the back of the vegetable compartment and the freezing chamber of the refrigerator and the cooling chamber in the first embodiment. A cross-sectional view showing the mounting configuration of the vegetable compartment back wall and the freezing compartment back wall of the refrigerator according to the first embodiment. Sectional view of the main part of FIG. An exploded perspective view showing the back wall of the vegetable compartment, the partition plate, and the back wall of the freezing chamber of the refrigerator according to the first embodiment. A cross-sectional view showing the partition plate of the refrigerator according to the first embodiment in an exploded manner. A perspective view showing a state in which a cooling fan is attached to a partition plate of the refrigerator according to the first embodiment. A perspective view of a state in which a cooling fan is attached to the partition plate of the refrigerator according to the first embodiment as viewed from the rear. Perspective view when the cooling fan of FIG. 21 is removed. An exploded perspective view showing the back wall of the vegetable compartment of the refrigerator and the cooling fan according to the first embodiment. A perspective view of the rear wall of the vegetable compartment of the refrigerator and the cooling fan in the first embodiment as viewed from the rear. An exploded perspective view showing a cooling fan unit of a refrigerator according to the first embodiment. Perspective view of the back wall of the vegetable compartment of the refrigerator according to the first embodiment. An exploded perspective view of the back wall of the vegetable compartment of the refrigerator according to the first embodiment. A perspective view showing the back wall of the freezing chamber of the refrigerator according to the first embodiment. An exploded perspective view of the back wall of the freezing chamber of the refrigerator according to the first embodiment. A perspective view of the back wall of the freezer compartment of the refrigerator according to the first embodiment as viewed from the back side. An exploded perspective view of the back wall of the freezer compartment of the refrigerator according to the first embodiment as viewed from the back. A perspective view showing the back wall of the freezing chamber of the refrigerator in the first embodiment disassembled together with the cooler. (A) A perspective view and a cross-sectional view showing a draining rib provided on the back wall plate of the vegetable compartment on the vegetable compartment side of the refrigerator in the first embodiment, and (b) a perspective view showing the draining rib provided on the fan housing of the cooling fan. Figure and cross section Front view of the freezing chamber and river cooling chamber of the refrigerator according to the first embodiment as viewed from the front. Enlarged front view of the main part of FIG. 34 (A)-(c) Explanatory drawing explaining installation of the cooling fan of the refrigerator in Embodiment 1 of the same (A) (b) Explanatory drawing explaining the attachment of the back wall plate of the vegetable compartment side of the refrigerator in the first embodiment. Explanatory drawing explaining attachment of the back wall body of the freezing chamber of the refrigerator in Embodiment 1 The control block diagram of the refrigerator in the first embodiment. Schematic cross-sectional view of a conventional refrigerator Schematic cross-sectional view showing another example of a conventional refrigerator

In the first invention, at least a refrigerating room, a vegetable room, and a freezing room are provided in the refrigerator main body, a cooling room is provided on the back surface of both the vegetable room and the freezing room, and cold air is provided in the cooling room. And a cooling fan that supplies the cold air generated by the cooler to the refrigerating room, the vegetable room, and the freezing room are arranged, and the back wall of the vegetable room that partitions the vegetable room and the cooling room. The body, the back wall of the freezer compartment that partitions the freezer compartment and the cooling chamber, and the foamed partition plate filled with the foamed heat insulating material that separates the vegetable compartment and the freezer compartment are separately configured. The back wall of the vegetable compartment and the back wall of the freezer are detachably attached, and the partition plate is integrally attached to the main body by filling and foaming the foaming heat insulating material in the main body, and the back wall of the vegetable compartment is attached. The body is composed of a detachable vegetable compartment back unit and a part of a cooling fan unit, and the cooling fan unit is a cooling fan side vegetable compartment back wall plate forming a surface of the cooling chamber on the cooling fan side and the cooling. A cooling chamber cover for installing a cooling fan is provided, and the rear wall of the vegetable compartment is composed of the rear unit of the vegetable compartment and the rear wall plate of the vegetable compartment on the cooling fan side, and the rear wall of the freezer compartment is frozen. The rear wall plate on the chamber side and the back wall plate on the freezer compartment on the cooler side are integrally united, and the cooling chamber is composed of the back wall plate on the freezer compartment on the cooler side and the cooling fan unit, which are separately configured. It is a structure formed by being sealed.

As a result, in this refrigerator, dew condensation in the vegetable compartment can be suppressed, the back wall of the vegetable compartment can be formed in accordance with the flow of cold air, and the flow of cold air can be made smooth.

In the first invention, the second invention includes a cooling fan-side vegetable compartment back wall plate that forms a cooling fan-side surface of the cooling chamber in the vegetable compartment back wall, and the cooling fan-side vegetable chamber. The back wall plate is arranged so as to be inclined so that the space of the cooling chamber becomes smaller toward the upper side.

As a result, the vegetable chamber can be shielded from heat from low-temperature radiation and low-temperature heat conduction by low-temperature cold air from the cooling fan, and the flow of cold air can be made smooth.

A third invention includes, in the first or second invention, a cooling chamber cover for installing a cooling fan on which the cooling fan is installed, and the cooling chamber cover for installing the cooling fan has the cooling air discharged from the cooling fan facing upward. It is configured to be inclined so as to be arranged.

As a result, the flow of cold air from the cooling fan can be made smooth, and the occurrence of dew condensation due to the low temperature of the back wall plate of the vegetable compartment on the vegetable compartment side can be prevented.

According to the fourth aspect of the invention, in the first invention, the vegetable storage case stored in the vegetable compartment is composed of an upper vegetable storage case and a lower vegetable storage case, and the rear wall portion of the upper vegetable storage case is the lower stage. It is configured to be located behind the rear wall of the vegetable storage case.

This makes it possible to prevent dew condensation in the vegetable compartment and prevent freezing in the vegetable compartment.

According to a fifth aspect of the present invention, in the first or second invention, the back wall of the freezing chamber and the back wall of the vegetable compartment that partition the freezing chamber and the cooling chamber are separately configured, and the vegetable compartment is formed separately. It is assumed that the cooling fan is arranged behind the back wall body and the cooler is arranged behind the back wall body of the freezing chamber.

As a result, the back wall of the vegetable compartment and the back wall of the freezing room can be attached and detached separately. The maintenance of the cooler can be performed separately for each.

A sixth aspect of the present invention is the first, second or fifth aspect of the present invention, wherein the vegetable compartment back wall body incorporates a refrigerating chamber damper that adjusts the amount of cold air from the cooling fan and sends cold air to the refrigerating chamber. There is a configuration.

As a result, it is possible to reliably prevent the damper from becoming cold and causing dew condensation on the damper.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. The present invention is not limited to this embodiment.
(Embodiment 1)
1 to 39 show the first embodiment of the present invention, and first, the overall configuration of the refrigerator will be described.

<Refrigerator body configuration>
In FIGS. 1 to 6, the refrigerator according to the present embodiment includes a refrigerator main body 1 having an open front, and the refrigerator main body 1 includes an outer box 2 mainly made of a steel plate as shown in FIG. 3 and the like. It is composed of an inner box 3 molded of a hard resin such as ABS, and a foamed heat insulating material 4 such as hard urethane foam filled between the outer box 2 and the inner box 3. The refrigerator body 1 is divided into a plurality of storage chambers by a partition plate 5.6. The refrigerator 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 refrigerator of the middle vegetable room type. The front opening of each storage chamber is closed by a door 10, a door 11, and a door 12 so as to be openable and closable.

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

Further, a cooling chamber 16 for generating cold 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 compartment 8, and a vegetable compartment back wall 17 having heat insulating properties such as styrofoam is provided between the cooling chamber 16 and the vegetable compartment 8. It has a heat insulating partition.

A cooler 18 is arranged in the cooling chamber 16, and a cooling fan 19 is arranged above the cooler 18. The cooling fan 19 cools each room by forcibly circulating the cold air cooled by the cooler 18 to the refrigerating room 7, the vegetable room 8, and the freezing room 9. For example, the refrigerating room 7 is usually cooled to a temperature of 1 ° C. to 5 ° C. so that the food does not freeze, and the vegetable room 8 is cooled to a temperature of 2 ° C. to 7 ° C., which is equal to or slightly higher than that of the refrigerating room 7. Further, the freezing chamber 9 is usually cooled to a freezing temperature range of -22 ° C to -15 ° C for freezing storage, and in some cases, for improving the frozen storage state, for example, a low temperature of -30 ° C or -25 ° C. It may be cooled to.

Further, in the space below the cooler 18 of the cooling chamber 16, as shown in FIG. 9 and the like, a defrost heater 28 for removing frost and ice adhering to the cooler 18 and its surroundings is arranged. A drain pan 29 for receiving the defrost water generated during defrosting is arranged below the defrost heater 28, and the defrost water is discharged from the deepest part of the drain pan 29 to an evaporating dish outside the refrigerator via a drain tube (not shown). It has become like.

Next, the cold air circulation configuration will be described mainly with reference to FIGS. 7 to 11.

<Cold air circulation passage configuration>
In the cooling chamber 16 that generates cold air, as shown in FIG. 9 and the like, the downstream of the cooling fan 19 opens in the cooling chamber cold air passage portion 30 formed between the vegetable compartment back wall 17 and the refrigerator main body 1. Cold air is blown to each chamber through the cooling chamber cold air passage portion 30.

The upper part of the cooling chamber cold air passage portion 30 is formed in the substantially central portion of the back surface of the refrigerating chamber 7 via the refrigerating chamber damper 31 as shown in FIGS. 7, 8, and 10, especially FIG. Communicate with. As shown in FIGS. 7 and 8, a refrigerating cold air return passage 33 from the refrigerating chamber 7 is installed adjacent to the side of the refrigerating cold air flowing passage 32, and the lower part thereof communicates with the vegetable chamber 8 and the cooling chamber 16. There is.

As shown in FIG. 7, the refrigerating chamber 7 is provided with a refrigerating cold air inlet 35 of the refrigerating cold air flow passage 32 at an appropriate position on the upper part of the back wall, and a refrigerating cold air opening to the refrigerating cold air return passage 33 at a suitable place on the lower part of the back wall. The return port 36 is provided, and the cold air from the cooling chamber 16 is supplied to the refrigerating cold air outflow passage 32 via the refrigerating chamber damper 31, and is supplied to the refrigerating chamber 7 from the refrigerating cold air inlet 35. On the other hand, the cold air after cooling the refrigerating chamber is supplied from the refrigerating cold air return port 36 to the vegetable chamber 8 via the refrigerating cold air return passage 33, and circulates to the cooling chamber 16. Further, the refrigerating chamber 7 is provided with a partial chamber at the lower portion thereof as described later, and the partial chamber includes a partial chamber damper 31a, a partial chamber cold air passage 32a, and a partial chamber cold air inlet as shown in FIG. It is supplied via 35a.

In this embodiment, as is clear from FIG. 9, on the back surface of the vegetable compartment back wall body 17 and the partition plate 6, the cooling chamber cold air passage portion 30, the refrigerating cold air passage 32, and the partial chamber cold air passage 32a are formed. A return passage 37 (see FIG. 8) for connecting the refrigerating cold air return passage 33, the vegetable compartment 8, and the cooling chamber 16 is formed, and the refrigerating chamber damper 31 is connected to the outgoing passage 37. It is provided.

Then, as shown in FIG. 8, a continuous passage 39 is formed between the refrigerated cold air going passage 32 and the refrigerated cold air returning passage 33, and a part of the low temperature cold air flowing through the refrigerated cold air going passage 32 is a refrigerated cold air returning passage. It is configured to be mixed with 33.

Further, as shown in FIG. 8, a cold air return duct 40 extending downward on the side of the cooling fan 19 and the cooler 18 of the cooling chamber 16 is provided on the back surface of the freezing chamber 9, and the cold air return duct 40 is provided. The upper part communicates with the vegetable chamber 8 through the return passage 38, and the lower part thereof opens in the vicinity of the lower part of the cooling chamber 16, and the cold air after cooling the vegetable chamber 8 opens to the lower part through the cold air return duct 40. Is configured to circulate from the air to the cooling chamber 16.

On the other hand, as shown in FIG. 10, the freezing chamber 9 has a freezing cold air inlet 42 communicating with the lower part of the cooling chamber cold air passage portion 30 on the back surface of the vegetable compartment back wall 17 at the upper part of the freezing chamber back wall 41. A freezing cold air return port 43 that opens to the lower part of the cooling chamber 16 is formed, and cold air from the cooling chamber 16 is supplied from the lower part of the cooling chamber cold air passage portion 30 through the freezing cold air inlet 42, and the cold air after cooling the freezing chamber 16 is supplied. Circulates to the cooling chamber 16 through the freezing cold air return port 43.

<Composition of refrigerating room, vegetable room, and freezing room>
As shown in FIG. 4, the refrigerating chamber 7 has a plurality of storage shelves 52 inside, and also has a partial chamber 53 capable of cooling in a semi-freezing temperature zone. A mouth 36 (both see FIG. 7) is provided. An operation unit 54 for setting the temperature inside the refrigerator, ice making, rapid cooling, and the like is arranged at an appropriate position on the side wall of the refrigerator compartment 7.

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

As shown in FIG. 11 and the like, a vegetable storage case 48 is arranged in the vegetable compartment 8, and the vegetable storage case 48 includes a lower vegetable storage case 49a mounted on the frame of the door 11 and a lower vegetable storage case 49a. It is composed of an upper vegetable storage case 49b 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 the vegetable compartment, and the inner peripheral wall surface of the vegetable compartment 8, and the space is an air passage through which cold air from the vegetable cold air inlet 44 flows. Consists of.

also. As already described with reference to FIG. 10, the freezing chamber 9 has a freezing cold air inlet 42 communicating with the lower part of the cooling chamber cold air passage portion 30 on the back surface of the vegetable compartment back wall 17 on the upper part of the back wall, and further the lower part of the back wall. A freezing cold air return port 43 communicating with the freezing chamber 9 is formed in the freezing chamber 9. Although not shown in the structural drawing, a freezing chamber damper is also incorporated at an appropriate position in the passage from the cooling chamber 16 to the freezing chamber 9. The freezing chamber 9 is also provided with a freezing chamber case 55 mounted on the frame of the door 12 as shown in FIG. 4 and the like.

Next, the control configuration of this refrigerator will be described with reference to FIG. 39.

<Control configuration>
FIG. 39 shows a control block diagram in the refrigerator of the present embodiment, 57 is a refrigerating room temperature detecting means, 58 is a vegetable room temperature detecting means, and 59 is a freezing room temperature detecting means, all of which are formed by a thermistor. They are installed in 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 controls the entire refrigerator, which is configured by a compressor or the like, and is a refrigerating room according to the control software incorporated in advance based on the outputs from the refrigerating room temperature detecting means 57 and the freezing room temperature detecting means 59. The damper 31 and the 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 configuration around the vegetable compartment 8, the freezing chamber 9, and the cooling chamber 16 located on the back surface thereof, which are the characteristic parts of the present invention, will be described in detail with reference to FIGS. 10 to 38.

<Composition of vegetable room, freezing room and cooling room>
As shown in FIGS. 10 and 15, the cooling chamber 16 is formed on the back surface of the vegetable compartment 8 and the freezing chamber 9 through the opening 20 (see FIG. 18) of the partition plate 6, and the vegetables are separated from each other. It is separated by the back wall body 17 of the room, and is separated from the freezing room 9 by the back wall body 41 of the freezing room.

The partition plate 6 is configured as shown in the exploded perspective view of FIG. That is, the partition plate 6 is configured by filling the foam 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 inner side. .. A cooling fan installation cooling chamber cover 19a to which the cooling fan 19 is assembled is attached to the upper part of the opening 20, and the cooler 18 of the cooling chamber 16 is located below. The opening 20 is formed to be larger than the projected area of the upper surface of the cooler 18 located below the opening 20, and a projecting piece 21 projecting downward is provided on the lower surface of the side edge portion of the lower surface member 6b on the back surface of the opening, and on the upper surface. Upward projecting pieces 22 projecting upward from the opening edge of the upper surface member 6a are formed. Further, in the partition plate 6, a first heater 23 for preventing dew condensation, which is composed of a sheathed heater or the like, is embedded in a portion of the bottom surface of the vegetable compartment in front of the cooling fan 19.

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

In the figure, 24 is a heat insulating barrier covering the front portion of the opening edge of the opening 20, which is made of styrofoam or the like, and one side piece thereof is an opening 25 for a cold air return passage provided in the partition plate 6. A passage opening 26 corresponding to the above is formed. Further, a tank installation portion 27 for supplying water to the ice making device provided in the freezing chamber 9 is formed in a portion of the partition plate 6 opposite to the cold air return passage opening 25.

Further, the vegetable compartment back wall 17 and the freezing compartment back wall 41 are formed separately and attached so as to be individually removable.

First, the vegetable compartment back wall 17 will be described. As shown in FIGS. 15 to 17 and 21 to 27, the vegetable compartment back wall 17 is the same as the resin vegetable compartment side vegetable compartment back wall plate 171 and the resin cooling fan side vegetable compartment back wall plate 172. A foam insulating material 173 such as foamed styrol is arranged between the two, and the vegetable compartment side vegetable compartment back wall plate 171 and the cooling fan side vegetable compartment back wall plate 172 are not in contact with each other as is clear from FIGS. 23 and 24. It is configured as a state, and the inside of the vegetable compartment 8 can be reliably shielded from heat by strong low-temperature radiation and low-temperature heat conduction by low-temperature cold air from the cooling fan 19. The cooling chamber cold air passage portion 30 described above is formed between the cooling fan side vegetable compartment back wall plate 172 and the cooling fan installation cooling chamber cover 19a.

In this embodiment, as shown in FIG. 23, the vegetable compartment back wall plate 171 and the foam insulation material 173 are integrated to form the vegetable compartment rear unit X, and the cooling fan side vegetable compartment back wall plate 172 is formed. The cooling fan unit Y is formed by detachably screwing the cooling fan 19 to the cooling chamber cover 19a for installing the cooling fan via a sealing material 64. As a result, the cooling chamber cold air passage portion 30 is formed by the cooling fan side vegetable compartment back wall plate 172 of the cooling fan unit Y and the cooling chamber cover 19a for installing the cooling fan.

Further, as shown in FIG. 36, the cooling fan 19 constituting the vegetable compartment back wall body 17 is integrally molded on the lower front surface of the cooling fan installation cooling chamber cover 19a, and is a cooling fan side vegetable compartment back wall plate receiving piece. The tip of 19b is hooked and inserted into the locking piece 20a provided on the front edge of the partition plate opening 20, and is attached by rotating around this portion in the rearward direction. As a result, as shown in FIGS. 16 and 17, the cooling fan side vegetable compartment back wall plate receiving piece 19b comes into contact with the lower end of the cooling fan side vegetable compartment rear wall plate 172, and the rear of the cooling fan installation cooling chamber cover 19a. The lower end portion is attached and fixed in contact with the sealing surface 412b at the upper end, which is the end portion on the vegetable compartment side of the cooler side freezing chamber back wall plate 412 of the freezing chamber back wall body 41 described later. In addition, FIG. 16 and 64 in FIG. 17 are sealing materials provided at the respective contact portions.

Further, as shown in FIG. 37, the vegetable compartment rear unit X, which is located in front of the cooling fan unit Y and constitutes the vegetable compartment rear wall body 17, has a convex 171a below the vegetable compartment back wall plate 171 on the vegetable compartment side. It is engaged to the mouth edge of the partition plate opening 20, and as shown in the figure, the upper part is rotated in the rear direction and attached, and the foam insulation material 173 is attached to the back wall of the vegetable compartment on the cooling fan side on the cooling fan unit Y side. It is removable by pressing against the plate 172.

As a result, the cooling fan unit Y and the vegetable compartment rear unit X, which form the vegetable compartment rear wall body 17, are detachable.

Further, as shown in FIG. 10, a second heater 50 for preventing dew condensation, which is composed of a sheathed heater or the like, is embedded in the surface of the back wall body 17 of the vegetable chamber facing the cooling chamber 16. The second heater 50 is installed in a low temperature cooling chamber temperature zone located at a position facing the upper portion of the cooling chamber 16 and below the refrigerating chamber damper 31 that opens and closes the cold air from the cooling chamber 16 to the refrigerating chamber 7. Has been done.

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

Further, as shown in FIG. 10, the vegetable compartment back wall 17 incorporates the refrigerating chamber damper 31 and the partial chamber damper 31a described above above the cooling chamber cold air passage portion 30, and the cooling chamber cold air passage portion 30. The flow of cold air to the refrigerated cold air flow passage 32 and the partial chamber cold air flow passage 32a connected to the cold air passage 32a is controlled. As shown in FIG. 23, the refrigerating chamber damper 31 and the partial chamber damper 31a are integrated in the form of a twin damper, and as shown in FIGS. 22 to 23, the damper is incorporated above the cooling chamber cold air passage portion 30. Compared with the cooling fan side vegetable compartment back wall plate 172 of the vegetable compartment back wall 17 which is attached via the heat insulating material 61 and is exposed to the low temperature cold air from the cooling chamber 16 as a non-contact state by the damper built-in heat insulating material 61. The structure is such that the refrigerator compartment damper 31 and the partial chamber damper 31a, which come into contact with cold air having a high target temperature, are insulated.

On the other hand, the freezing chamber back wall 41 is configured as follows. That is, as shown in FIGS. 15 to 17 and 26 to 32, the freezing chamber back wall 41 is a freezing chamber side freezing chamber back wall plate 411 and a cooler side freezing chamber back wall plate, respectively, which are made of resin. The freezing chamber is configured by superimposing and integrating 412, and the upper end thereof communicates with the cooling chamber cold air passage portion 30 on the front surface of the cooling chamber cover 19a for installing the cooling fan through the partition plate opening 20. A cold air passage 62 is formed. The upper end of the freezing chamber cold air passage 62 becomes the freezing cold air inlet 42, and the lower opening thereof becomes the freezing cold air return port 43. Further, a freezing cold air outlet 63 is formed between them.

Further, as shown in FIG. 38, the freezing chamber back wall 41 has a projecting piece 411a at the lower end of the freezing chamber back wall plate 411 on the freezing chamber side inserted into the engagement piece 9a at the lower back of the freezing chamber, and this insertion portion is used as a fulcrum. The upper part thereof is rotated toward the cooler 18 and is detachably attached to the back surface of the freezing chamber 9.

By mounting on the back surface of the freezing chamber, the cooler side freezing chamber back wall plate 412 has its vegetable compartment side end located in the opening 20 of the partition plate 6 as shown in FIGS. 16 and 17, and the cooling is performed. The cooling chamber cover 19a for installing the cooling fan of the fan 19 is pressed against the lower end portion, and has a sealing surface 412b that seals between the two.

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

Further, the sealing surface 412b of the cooling chamber back wall plate 412 on the cooler side is formed on the front-rear surface as is clear from FIG. 16 and the like, and does not narrow the cooling chamber cold air passage portion 30 located on the front surface side thereof. In addition to the shape, when the cooling chamber cover 19a for installing the cooling fan and the back wall plate 412 of the cooling chamber on the cooler side are rotationally mounted, the lower end of the cooling chamber cover 19a for installing the cooling fan and the freezing chamber on the cooler side The back wall plate 412 is brought into contact with the sealing surface 412b so as to face each other to seal between the two.

Further, as shown in FIG. 33, draining ribs 19c are formed in the lower portion of the rear wall plate 172 of the vegetable compartment on the cooling fan side and the lower portion of the cooling chamber cover 19a for installing the cooling fan of the cooling fan 19. As is clear from the figure, the drain rib 19c is between the cooling fan side vegetable compartment back wall plate receiving piece 19b of the cooling fan installation cooling chamber cover 19a located below the cooling fan side vegetable compartment back wall plate 172. It is formed so as to be located above the sealing material 64 between the sealing material 64 and the cooling chamber cover 19a for installing the cooling fan and the upper end sealing surface 412b of the back wall plate of the freezer compartment on the cooler side.

Furthermore, the sealing surface 412b of the cooler side freezing chamber back wall plate 412 is positioned above the upper end of the core portion 18a of the cooler 18 as is clear from FIG. 16 and the like.

The operation and operation of the refrigerator configured as described above will be described 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 and liquefied to some extent by a condenser (not shown), and further, the refrigerant pipes (shown) arranged on the side and back of the refrigerator and the front frontage of the refrigerator. It is condensed and liquefied while preventing dew condensation in the refrigerator, and reaches a capillary tube (not shown). After that, in the capillary tube, the pressure is reduced while exchanging heat with the suction pipe (not shown) to the compressor 15, and the liquid refrigerant becomes a low-temperature low-pressure liquid refrigerant and reaches the cooler 18 in the cooling chamber. Here, the refrigerant in the cooler 18 evaporates and vaporizes, and cold 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 portion 30 to the refrigerating chamber 7 and the freezing chamber 9 by the cooling fan 19, and the cold air supplied to the refrigerating chamber 7 cools the refrigerating chamber 7. After that, it is supplied to the vegetable compartment 8 and each chamber is cooled to a 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. Further, in order to supply cold air to each of the above chambers, the control unit 60 operates / stops the compressor 15 and the cooling fan 19 based on the detection temperatures of the refrigerating chamber temperature detecting means 57 and the refrigerating chamber temperature detecting means 59, and the refrigerating chamber damper 31. , The freezer compartment damper 34 is controlled to open and close, and each chamber is maintained in the set temperature range.

Next, the action and effect in the configuration around the cooling chamber 16, the vegetable chamber 8, and the freezing chamber 9 that generate the cold air will be described.

First, in this refrigerator, the vegetable compartment back wall 17 and the freezing compartment back wall 41 that partition the cooling chamber 16 from the vegetable compartment 8 and the freezing chamber 9 are separately configured and can be individually attached and detached. Therefore, maintenance is 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 by attaching / detaching the wall body corresponding to each of the cooler 18 or the cooling fan 19. For example, in the case of the vegetable compartment back wall body 17, remove the vegetable compartment rear unit X that constitutes a part thereof, and then remove the cooling fan side vegetable compartment back wall plate 172 from the front of the cooling fan knit Y that is screwed. For example, the cooling fan 19 can be maintained. Further, in the case of the freezing chamber back wall 41, the cooler side freezing chamber back wall plate 412 and the freezing chamber side freezing chamber back wall plate 411 are integrally unitized, so that the freezing chamber can be operated once. The back wall body 41 can be removed, and the cooler 18 can be easily maintained.

Further, the cooler side freezing chamber back wall plate 412 and the freezing chamber side freezing chamber back wall plate 411 are integrated into a unit and connected to a cooling chamber cold air passage portion 30 in which cold air from a cooling fan is guided between them. Since the freezing chamber 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 freezing chamber 9, and the freezing chamber can be cooled efficiently.

Further, the cooling chamber 16 is configured such that the lower portion of the cooling chamber cover 19a for installing the cooling fan of the cooling fan 19 is directly in contact with the vegetable compartment side end of the cooler side freezing chamber back wall plate 412 of the freezing chamber 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 made large. That is, in this embodiment, the vegetable compartment side end portion of the cooler side freezer compartment back wall plate 412 of the freezer compartment back wall 41 is set as a sealing surface 412b, and the cooling fan 19 is installed on the sealing surface 412b. Since the lower end of the cooling chamber cover 19a is brought into contact with each other to seal between the two, the end of the rear wall plate 412 of the cooling chamber on the cooling chamber side is separated from the end of the opening 20 for the cooling chamber at the rear of the partition plate 6. It is no longer necessary to use this opening edge as a connection seal surface with the cooling chamber cover 19a for installing a 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 opening 20 for the cooling chamber is also increased in front-rear width and the like to increase the capacity, and the refrigerating capacity, that is, the capacity of the refrigerator can be further increased. In addition, the cooler 18 can be easily incorporated into the cooling chamber 16 to improve productivity.

Further, since the vegetable compartment side end itself of the cooler side freezing chamber back wall plate 412 of the freezing chamber back wall 41 has a sealing surface 412b, the vegetable compartment side end portion of the cooler side freezing chamber back wall plate 412 described above. Is attached to the edge of the cooling chamber opening 20 of the partition plate 6, and the number of sealing points can be reduced as compared with the case where the opening edge is used as the connection sealing surface with the cooling chamber cover 19a for installing the cooling fan, and the sealing property is improved.

Further, as described above, the vegetable compartment side end of the cooler side freezing chamber back wall plate 412 of the freezing chamber back wall 41 is set as a sealing surface 412b, and the cooling chamber cover for installing the cooling fan 19 on the sealing surface 412b. Even if the lower end of 19a is brought into contact with each other to seal between them, the cooling fan side vegetable compartment back wall plate 172 and the freezing chamber back wall 41 of the vegetable compartment back wall 17 can be attached and detached from either side. Since the attachment / detachment order is not restricted, the maintainability can be improved.

That is, the sealing surfaces of the vegetable compartment side end of the cooler-side freezing chamber back wall plate 412 and the sealing surfaces of the lower end of the housing 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 back wall plate 412 of the freezing chamber on the cooler side, or even if it is removed from the cooling chamber cover 19a side for installing the cooling fan 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 performing maintenance on the cooling fan 19, there are no restrictions such as first removing the back wall 41 of the freezing chamber and then removing the cooling fan 19, which improves maintainability. improves.

Further, the vegetable compartment side end of the cooler side freezer 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. Therefore, since the sealing surface 412b in contact with the cooling fan installation cooling chamber cover 19a of the cooling fan 19 is formed, the end portion on the vegetable compartment side which is the sealing surface 412b of the cooling chamber back wall plate 412 on the cooler side is movable. Even if it is, since the partition sealing 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 defect that tends to occur when the sealing surface is formed of a movable member. It is possible to realize a reliable seal.

Further, since the seal surface 412b formed at the end portion of the cooler side freezer chamber back wall plate 412 on the vegetable compartment side is formed on the surface in the front-rear direction, the dimension of the seal portion in the front-rear direction can be reduced. , Sealing can be performed without disturbing the flow of cold air flowing in the vertical direction, and miniaturization of equipment can be promoted.

In addition, since the seal surface 412b formed at the end of the back wall plate 412 of the freezer on the cooler side on the side of the vegetable chamber is located above the upper end of the core portion 18a of the cooler 18, when defrosting or the like, the seal surface 412b is located above the upper end. Even if dew condensation water is generated on the core portion 18a of the cooler 18, it can be prevented from dripping on the sealing surface 412b. As a result, it is possible to prevent deterioration of the sealing property caused by repeated freeze expansion, thawing and the like of the dropped dew condensation water at the sealing portion, and it is possible to guarantee good sealing property over a long period of time.

Similarly, the cooling fan 19 also has a drain rib 19c on a portion of the cooling chamber cover 19a for installing the cooling fan, which is located above the sealing surface 412b formed of the vegetable compartment side end of the cooler side freezing chamber back wall plate 412. It is possible to prevent the dew condensation water generated on the cooling chamber cover 19a for installing the cooling fan from dripping on the sealing surface 412b at the time of defrosting, etc. It is possible to prevent the deterioration of the sealing property caused by repeating the above and the like, and to guarantee the good sealing property for a long period of time.

On the other hand, the cooling chamber cold air passage portion 30 that guides the cold air from the cooling fan 19 to the refrigerating chamber 7 and the freezing chamber 9 is cooled by resin on the surface of the foamed heat insulating material 173 of the vegetable compartment back wall 17 constituting the cooling chamber cold air passage portion 30. Since the back wall plate 172 of the vegetable compartment on the fan side is arranged to cover it, the flow of cold air can be made smoother than the one in which the foamed heat insulating material 173 is exposed as it is, and at the same time, the passage wall body. It is possible to prevent cold air leakage due to surface deterioration or surface deterioration at the sealed portion. That is, since the cooling fan-side vegetable compartment back wall plate 172 made of a resin plate can be molded more accurately than the foamed heat insulating material 173, the shape of the portion facing the cooling fan 19 is accurately adapted to the flow of cold air. It can be formed well and the flow of cold air can be smoothed. In addition, since the foamed heat insulating material 173 permeates when moisture adheres to its surface, the dew condensation water generated at the time of defrosting or the like permeates and repeats freezing expansion and thawing on the surface, resulting in surface deterioration and seal deterioration. However, since moisture does not permeate into the resin cooling fan side vegetable compartment back wall plate 172, this does not occur, and cold air leakage due to surface deterioration of the passage wall body and deterioration of the seal part is ensured. Can be prevented.

Further, of the vegetable room side vegetable room back wall plate 171 and the cooling fan side vegetable room back wall plate 172 of the vegetable room back wall body 17, the cooling fan side vegetable room back wall plate 172 is detachably attached to the cooling fan 19 side. Since it is attached, the seal of the cooling chamber cold air passage portion 30 formed between the cooling fan side vegetable compartment back wall plate 172 and the cooling chamber cover 19a for installing the cooling fan can be made reliable and strong. That is, since the back wall plate 172 of the vegetable compartment on the cooling fan side and the cooling chamber cover 19a for installing the cooling fan are made of resin, the joint portion between them is the above-mentioned joint between the resins whose dimensional accuracy is easy to obtain. The cooling chamber cover 19a for installing the cooling fan can be pressed against the foamed heat insulating material 173 of the back wall body 17 of the vegetable compartment to make it more reliable and stronger than the case where the two are sealed. Therefore, the seal of the cooling chamber cold air passage portion 30 where the pressure of the cold air blown from the cooling fan 19 is highest can be ensured and strong. As a result, 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 or the like, freezing a part of the vegetables in the vegetable chamber 8.

Further, in the vegetable compartment 8, the cooling chamber cold air passage portion 30 is located on the back surface thereof, and the portion receives strong cold radiation due to the low temperature cold air in that portion, and this portion tends to be lowered in temperature. However, since the vegetable compartment back wall body 17 has a foamed heat insulating material 173 between the vegetable compartment side vegetable compartment back wall plate 171 and the cooling fan side vegetable compartment back wall plate 172, from the cooling chamber temperature zone. The strong cold radiation to the vegetable compartment 8 due to the low-temperature cold air can be reliably insulated, and the occurrence of dew condensation in the vegetable compartment 8 can be suppressed. As a result, the vegetables in the vegetable compartment 8 can be cooled and stored in a good state.

In addition, the vegetable compartment back wall 17 has a non-contact foam insulating material 173 located between the vegetable compartment back wall plate 171 and the cooling fan side vegetable compartment back wall plate 172 so that they do not come into contact with each other. Since it is in a state, the low temperature of the back wall plate 172 of the vegetable compartment on the cooling fan side, which becomes low temperature when exposed to the low temperature cold air in the cooling chamber 16, is conducted to the back wall plate 171 of the vegetable compartment on the vegetable compartment side, and the temperature is lowered. This can be prevented, and the occurrence of dew condensation due to the low temperature of the vegetable compartment back wall plate 171 on the vegetable compartment side can be reliably prevented.

Further, dampers 31 and 31a for controlling the flow of cold air from the cooling chamber cold air passage portion 30 to the refrigerating chamber 7 and the like are incorporated in the vegetable compartment back wall body 17, but the dampers 31 and 31a become cold and dew condensation. It is possible to prevent the occurrence and the occurrence. That is, the dampers 31 and 31a are provided with a heat insulating material 61 for incorporating a damper between the dampers 31 and 31a and the back wall plate 172 of the vegetable compartment on the cooling fan side which is exposed to the cold air of the cooling chamber cold air passage portion 30 to lower the temperature. That is, the dampers 31, 31a and the back wall plate 172 of the vegetable compartment on the cooling fan side are in a non-contact state. Therefore, it is possible to prevent the low temperature of the back wall plate 172 of the vegetable compartment on the cooling fan side, which has been exposed to the low temperature cold air in the cooling chamber cold air passage portion 30 and cooled, from being conducted to the dampers 31 and 31a to be lowered. .. Therefore, it is possible to reliably prevent the dampers 31 and 31a, which are connected to the refrigerated cold air flow passage 32 and are in contact with cold air having a relatively high temperature similar to this, from becoming cold and causing dew condensation.

Further, even if the temperature reduction in the vegetable compartment 8 is suppressed as described above, if this state continues for a long time, the temperature in the vegetable compartment 8 may drop to a temperature at which dew condensation is likely to occur. In this refrigerator, the control unit 60 heats the second heater 50 provided in the portion facing the low temperature zone on the back surface of the vegetable compartment. As a result, the temperature drop on the back surface of the vegetable chamber due to cold radiation from the low temperature zone is surely suppressed, and a situation leading to the occurrence of dew condensation can be avoided.

Further, the vegetable compartment 8 is likely to receive cold radiation from the freezing chamber 9 to lower the temperature, but in this embodiment, the influence of the cold radiation from the freezing chamber 9 is greatly reduced by the following configuration. That is, the partition plate 6 is attached so as to communicate with the inner and outer boxes 2 and 3 of the refrigerator body, and when the refrigerator body is molded, the refrigerator body 1 is filled with a foam heat insulating material 4 such as urethane and integrated with the refrigerator body 1. It is a modified configuration. As a result, the partition plate 6 can also be heat-insulated by the foam heat insulating material 4 such as urethane, which has high heat insulating properties like the refrigerator main body 1, and the heat insulating properties are greatly improved. As a result, the amount of cold radiation from the freezing chamber 9 to the vegetable compartment 8 can be strongly reduced. At the same time, the thickness of the partition plate 6 itself can be reduced, so that the capacity of the vegetable compartment 8 or the freezing chamber 9 can be increased accordingly. In addition, in this embodiment, the first heater 23 is also provided on the partition plate 6 that separates the vegetable compartment 8 and the freezing chamber 9, and the first heater 23 generates heat together with the second heater 50. The influence of cold radiation from 9 can be suppressed more effectively, and deterioration of vegetables due to the occurrence of dew condensation in the vegetable room can be reliably prevented.

Although the embodiments of the present invention have been described above, the configurations described in the above embodiments are shown as an example of carrying out the present invention, and can be variously changed as long as the object of the present invention is achieved. Needless to say.

For example, in this embodiment, the cooling fan 19 is attached to the cooling chamber cover 19a for installing the cooling fan, but the cooling fan 19 is attached to and fixed to the inner box 3 on the back side of the cooling chamber, and the blades of the cooling fan 19 are attached. The configuration may be such that only the portion faces the fan opening of the cooling chamber cover 19a for installing the cooling fan.

Further, in this embodiment, the case where the cooling chamber 16 is located behind the vegetable chamber 8 and the freezing chamber 9 straddling the vegetable chamber 8 and the freezing chamber 9 is described as an example, but this describes the refrigerating chamber 7 and the freezing chamber 9. It may be arranged adjacent to each other and provided on the back surface across both of them, and if a cooling chamber is provided across two storage chambers having different temperature zones, what is the storage chamber? It may be there. Therefore, the form of the refrigerator is not limited to the middle vegetable type refrigerator, and the vegetable compartment may be at the bottom, or the refrigerator may be an internal refrigerator without a vegetable compartment.

The refrigerator according to the present invention is of high quality and highly reliable because it can suppress dew condensation in the vegetable chamber, can perform good maintenance, smooth the flow of cold air, and at the same time suppress the occurrence of trouble due to dew condensation in the cooling chamber. It can be a refrigerator. Therefore, it can be widely applied not only for home use but also for many purposes such as commercial refrigerators and showcases.

1 Refrigerator body 5, 6 Partition plate 7 Refrigerator room (storage room)
8 Vegetable room (storage room)
9 Freezing room (storage room)
16 Cooling room 17 Vegetable room back wall body 18 Cooler 18a Core part 19 Cooling fan 19a Cooling room 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 Cold air passage (passage)
31 Refrigerator room damper 41 Refrigerator room back wall 61 Damper built-in heat insulating material 62 Freezer room cold air passage 63 Refrigerator cold air outlet 171 Vegetable room side Vegetable room back wall board 172 Cooling fan side Vegetable room back wall board 173 Foam insulation 411 Refrigerator Room side freezer room back wall plate 412 Cooler side freezer room back wall board 412b Seal surface X Vegetable room back unit Y Cooling fan unit

Claims (6)

The refrigerator body is provided with at least a refrigerator compartment, a vegetable compartment, and a freezer compartment, and a cooling chamber is provided on the back surface of both the vegetable compartment and the freezer compartment to generate cold air in the cooling chamber. A cooling fan that supplies the cold air generated by the cooler to the refrigerator compartment, the vegetable compartment, and the freezer compartment is arranged, and a vegetable compartment back wall that partitions the vegetable compartment and the cooling chamber, and the freezer compartment. The back wall of the freezer compartment that separates the vehicle from the cooling chamber and the back wall of the freezer compartment and the partition plate that is filled with foamed heat insulating material that separates the vegetable compartment and the freezer compartment are separately configured to form the back wall of the vegetable compartment. The partition plate is detachably attached to the back wall of the freezer compartment, and the partition plate is integrally attached to the main body by filling and foaming the foaming heat insulating material in the main body, and the back wall of the vegetable compartment is a detachable vegetable. The cooling fan unit is composed of a chamber rear unit and a part of the cooling fan unit, and the cooling fan unit is a cooling fan on which the cooling fan side vegetable compartment back wall plate forming the cooling fan side surface of the cooling chamber and the cooling fan are installed. A cooling chamber cover for installation is provided, and the vegetable compartment rear wall body is composed of the vegetable compartment rear unit and the cooling fan side vegetable compartment rear wall plate, and the freezer compartment rear wall body is a freezer compartment side rear wall plate. The back wall plate of the freezer compartment on the cooler side is integrally united, and the cooling chamber is formed by being sealed by the back wall plate of the freezer chamber on the cooler side and the cooling fan unit, which are separately configured. refrigerator. Before SL cooling fan side vegetable compartment rear wall plate, refrigerator of claim 1, the space of the cooling chamber is inclined arranged so as to reduce upward. The cooling fan installed for cooling room cover the cooling fan refrigerator according to claim 1 or 2 discharge cold air are inclined arranged so as to face the upper. The vegetable storage case stored in the vegetable compartment is composed of an upper vegetable storage case and a lower vegetable storage case, and the rear wall portion of the upper vegetable storage case is arranged behind the rear wall portion of the lower vegetable storage case. The refrigerator according to any one of claims 1 to 3. The refrigerator according to any one of claims 1 to 4, wherein the cooling fan unit has the cooling fan arranged and the cooler arranged behind the back wall of the freezing chamber. The refrigerator according to any one of claims 1 to 5, wherein the vegetable compartment rear unit incorporates a refrigerating chamber damper that adjusts the amount of cold air from the cooling fan and sends cold air to the refrigerating chamber.

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