JP2018155488A - refrigerator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a refrigerator that can preferably reserve vegetables and the like by eliminating dew condensation inside a vegetable room.SOLUTION: In a refrigerator, a vegetable room 8 is disposed between a cold room 7 and a refrigeration room 9. The refrigerator includes a cooling room 16 for generating cool air at back faces of the vegetable room and the refrigeration room. The refrigerator has a configuration where a vegetable room fan 53 is provided to the refrigeration room. Thus, the cool air in the vegetable room is diffused or circulated to suppress generation of an extreme low-temperature and a temperature difference in the vicinity of lower of the back face of the vegetable room, thereby preventing dew condensation.SELECTED DRAWING: Figure 10

Description

  The present invention relates to a refrigerator in which a vegetable room is provided at a substantially central portion of the refrigerator main body.

  Generally, a household refrigerator is configured by providing a plurality of storage rooms having different temperature bands, for example, a refrigerator room, a vegetable room, and a freezer room, in the refrigerator body. And in the refrigerator which has such a some storage room, what has arrange | positioned the vegetable room in the upper-lower approximate center part of the refrigerator main body which a user can use most easily is seen (for example, refer patent document 1).

  FIG. 23 shows a refrigerator described in Patent Document 1, in which a refrigerator room 101 is provided at the top of the refrigerator body 100 and a freezing room 102 is provided at the bottom, and a vegetable room 103 is provided at a substantially central portion of the refrigerator book 100 between these two rooms. It is arranged. A cooling chamber 104 is provided on the back of the refrigerator body 100 across the freezer compartment 102 and the vegetable compartment 103. A cooler 105 and a cooling fan 106 are arranged in the cooling chamber 104, and the cool air generated by the cooler 105 is provided. Is supplied to the refrigerator compartment 101, the vegetable compartment 103, and the freezer compartment 102 by the cooling fan 106 and circulated, and the food stored in these compartments 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.

JP-A-9-113109

  The refrigerator described in Patent Document 1, that is, the refrigerator in which the vegetable compartment 103 is arranged in the substantially upper and lower central portions of the refrigerator main body 100 is called a middle vegetable compartment type refrigerator, and it is easy to take in and out vegetables. It is useful for users who use a lot.

  However, in such a refrigerator, since the cooling chamber 104 is also located on the back of the vegetable compartment 103, strong cooling radiation may be received from the cooling chamber 104 to cause condensation in the vegetable compartment. There was a problem of deteriorating the vegetables stored in the box.

  In particular, the middle vegetable room type refrigerator in which the vegetable room 103 is provided in the substantially upper and lower central part of the refrigerator main body 100 receives cold radiation from the freezer room 102 in which the bottom surface of the vegetable room 103 is located below. The cold radiation from the room 102 is also added, and the synergistic action of both of them tends to lower the temperature in the lower part of the back of the vegetable room 103, causing condensation in the vicinity of the back of the back of the vegetable storage case in the vegetable room and deteriorating the vegetables. It was easy to happen.

  It is conceivable that this condensation problem can be solved by providing a cooling chamber only on the back surface of the freezer compartment and not positioning it on the back portion of the vegetable compartment as disclosed in JP-A-11-118314. . However, with such a configuration, the size of the cooler provided in the cooling chamber is limited and the cooling capacity is limited, so that it cannot be applied to a large-capacity large refrigerator. Therefore, the problem of vegetable deterioration due to dew condensation caused by dehydration cannot be solved. That is, this condensation problem has been an unavoidable problem in a large refrigerator in which the cooling chamber is enlarged and the cooling chamber 104 is located up to the rear portion of the vegetable room.

  The present invention has been made in view of these points, and an object of the present invention is to provide a refrigerator that can cool and store vegetables and the like by eliminating condensation in the vegetable room even in a large refrigerator having a large freezing capacity. It is what.

  In order to solve the above-described conventional problems, the present invention provides a refrigerator in which a vegetable room is disposed between a refrigeration room and a freezing room, and a cooling room for generating cold air is provided on the back of the vegetable room and the freezing room. The vegetable room is provided with a vegetable room fan.

  As a result, the cold air in the vegetable room is diffused and / or circulated by the vegetable room fan. Prevents the occurrence of condensation.

  Even if the refrigerator of the present invention is a refrigerator having a large cooling capacity, it is possible to suppress the occurrence of dew condensation in the vegetable room, cool and store the vegetables in a good state, and make the refrigerator highly reliable.

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 Schematic sectional view for explaining the cold air flow in FIG. 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 back of the vegetable compartment and freezer compartment of the refrigerator shown in FIG. The expanded perspective view which shows the back wall part of the vegetable compartment and freezer compartment of the refrigerator in Embodiment 1 The perspective view of the back surface partition wall block which comprises the back wall part of the vegetable compartment of the refrigerator shown in FIG. 16 is an exploded perspective view of a rear partition wall block that constitutes the rear wall portion of the vegetable compartment shown in FIG. The disassembled perspective view of the block which comprises the back wall part of the freezer compartment shown in FIG. The perspective view of the partition plate and cooling fan which partition the storage room and vegetable room of the refrigerator in Embodiment 1 19 is an exploded perspective view of the partition plate and the cooling fan in FIG. The perspective view which shows the vegetable storage case of the refrigerator in Embodiment 1 Control block diagram of the refrigerator in the first embodiment Schematic sectional view of a conventional refrigerator

  1st invention arrange | positions the refrigerator compartment in the upper part of the refrigerator main body, the freezer compartment in the lower part, the vegetable compartment divided with the partition plate above the said freezer compartment, and provided the cooling chamber for cold-air generation behind the said freezer compartment The cooling chamber includes a cooler and a cooling fan that supplies the cool air generated by the cooler to each chamber, and the cool air that has circulated through the refrigerating chamber behind the vegetable storage case in the vegetable chamber is supplied to the cooler. A return return passage and a vegetable room fan for blowing cool air to the vegetable room, and the vegetable room fan is arranged in communication with the return passage so that the cold air in the vegetable room is diffused or The diffused and / or circulated cool air cools down the temperature in the vegetable compartment, and at the same time, suppresses extreme temperature reduction and temperature difference in the vicinity of the lower back of the vegetable compartment, thereby preventing the occurrence of condensation.

  2nd invention is 1st invention, The said vegetable compartment fan is arrange | positioned facing the rear surface of the said vegetable storage case.

  3rd invention is 1st or 2nd invention, The said cooling fan is attached to the upper part of the said partition plate, and is located in the back surface of the said vegetable compartment.

  A fourth invention is the invention according to any one of the first to third inventions, wherein the vegetable storage case is partitioned left and right by a case partition plate, and a plastic bottle can be stood and stored in either one of the left and right partition parts. The vegetable compartment fan is arranged behind the one partition.

  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 is a front view of a refrigerator according to Embodiment 1 of the present invention, FIG. 2 is a front view when the door of the refrigerator according to Embodiment 1 is opened, and FIG. 3 is a diagram illustrating the refrigerator according to Embodiment 1. FIG. 4 is a sectional view taken along the line BB in FIG. 2 showing the refrigerator in the first embodiment, FIG. 5 is a half perspective view of the refrigerator in the first embodiment, and FIG. 6 is the first embodiment. 7 is a schematic cross-sectional view for explaining the cold air flow of the refrigerator in FIG. 1, FIG. 7 is a schematic front view for explaining the cold air flow of the refrigerator in the first embodiment, and FIG. FIG. 9 is an enlarged cross-sectional view of the main part of FIG. 3 showing the refrigerator in the first embodiment, and FIG. 10 is a schematic cross-sectional view for explaining the cold air flow in FIG. FIG. 4 shows the main part of FIG. 4 showing the refrigerator in the first embodiment. FIG. 12 is a schematic sectional view for explaining the cold air flow in FIG. 11, FIG. 13 is an enlarged front view showing the vegetable compartment and the freezer compartment of the refrigerator in the first embodiment, and FIG. The enlarged front view which shows the cooling fan and cooler which were installed in the back of the vegetable compartment and freezer compartment of the refrigerator to show, FIG. 15 is an enlarged perspective view which shows the vegetable compartment of the refrigerator in Embodiment 1, and the back wall part of a freezer compartment 16 is a perspective view of a rear partition wall block constituting the rear wall portion of the vegetable compartment of the refrigerator shown in FIG. 15, and FIG. 17 is a rear partition wall constituting the rear wall portion of the vegetable compartment shown in FIG. FIG. 18 is an exploded perspective view of the block constituting the back wall portion of the freezer compartment shown in FIG. 16, and FIG. 19 is a partition plate for partitioning the storage compartment of the refrigerator and the vegetable compartment in the first embodiment. FIG. 20 is a perspective view of a cooling fan, and FIG. Exploded perspective view of the kick partition plate and the cooling fan, FIG. 21 is a perspective view showing a refrigerator vegetable storage case in the first the embodiment, FIG. 22 is a control block diagram of the refrigerator in the first same embodiment.

  First, the whole structure of a refrigerator is demonstrated.

<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 back partition wall body 17 is provided between the vegetable chamber 8 and a heat insulating material such as polystyrene foam. 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.

  The cooling fan 19 is assembled to a partition plate 6 that partitions the vegetable compartment 8 and the freezing compartment 9 as shown in FIG. 19, and in this state, the cooling fan 19 faces the back of the vegetable compartment 8 as shown in FIG. Cold air is blown toward the rear partition wall 17 that is located in the portion and partitions the vegetable compartment 8, thereby bringing strong cold radiation to the lower back of the vegetable compartment.

  The partition plate 6 and the cooling fan 19 are 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. 20) between the upper surface member 6a and the lower surface member 6b, and the opening 20 is formed on the back side. . The cooling fan 19 is assembled 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 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. Although not shown, the partition plate 6 is formed in a hollow plate shape by combining the upper surface member 6a and the lower surface member 6b, and is attached so as to communicate between the inner and outer boxes 2 and 3 of the refrigerator body 1 and is mounted on the refrigerator body 1. At the same time, it is filled with the foam heat insulating material 4 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.

  In the lower space of the cooler 18, a defrost heater 28 for defrosting the frost and ice adhering to the cooler 18 and its periphery is disposed 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.

<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 cold air conveyance path 30 formed between the rear partition wall body 17 and the refrigerator main body 1. Then, the cool air is blown into each chamber through the cooling chamber cool air conveyance path 30.

  The upper part of the cooling chamber cool air conveyance path 30 is a refrigerated cold air passage 32 formed at a substantially central portion of the back surface of the refrigeration chamber 7 through a refrigeration chamber damper 31 as shown in FIGS. 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. 8, the cooling chamber cold air conveyance path 30, the refrigerated cold air passage 32, and the partial chamber cold air passage 32 a are provided on the back surface of the rear partition wall body 17 and the partition plate 6. And a return passage 38 for connecting the refrigerated cold air return passage 33 to the vegetable compartment 8 and the cooling chamber 16. The refrigeration chamber damper 31 is provided in the forward passage 37. .

  A communication passage 39 is formed between the refrigerated cold air return passage 32 and the refrigerated cold air return passage 33 so that a part of the low temperature cold air flowing through the refrigerated cold air return passage 32 is mixed into the refrigerated cold air return passage 33. It is configured.

  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 freezer cold air inlet 42 communicating with the lower part of the cooling room cold air conveying path 30 on the back of the rear partition wall 17 at the upper part of the rear wall 41 and the cooling room at the lower part. A freezing 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 conveyance path 30 through the freezing cold air inlet 42. It circulates to the cooling chamber 16 through the cold air return port 43.

<Vegetable room configuration>
As shown in FIGS. 7 and 12, the vegetable room 8 is a portion closer to the left or right of the back wall, in this embodiment, the lower portion of the right side as viewed from the front, and the return passage 38 portion 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.

  Furthermore, in this vegetable compartment 8, as shown in FIG. 12, a vegetable compartment passage section 50 is provided in the vertical direction at the front position of the cold air return passage 38 using the rear partition wall 17 on the back of the vegetable compartment 8. It is formed vertically. The vegetable chamber passage portion 50 has an upper portion communicating with the vegetable cold air return port 46 and a lower portion communicating with the vegetable cold air inlet 44, and a vegetable chamber fan comprising a propeller fan or the like at a portion communicating with the vegetable cold air inlet 44. 53 is arranged.

  Furthermore, the vegetable compartment 8 has a first passage 47a formed on the upper surface of the vegetable compartment so as to be connected to the vegetable compartment passage section 50 and the vegetable cold air return port 46. One vegetable cold air inlet 47 is provided.

  In addition, in the vegetable compartment 8 of this embodiment, as shown in FIG. 13, FIG. 16, etc., it is the upper part of the rear partition wall body 17 which becomes the inner surface and is a diagonal position of the vegetable cold air inlet 44. In this embodiment, a second vegetable cold air suction port 51 is provided in the upper left side upper part in this embodiment, and a second passage 51a provided with the second vegetable cold air suction port 51 is also shown in FIG. In addition, the upper part of the vegetable compartment passage 50 and the vegetable cold air return port 46 communicate with each other.

  FIG. 17 is an exploded perspective view of the rear partition wall body 17 forming the vegetable compartment passage portion 50. The vegetable compartment passage portion 50 has a front partition plate 17a and a rear portion that are polymerized via a polystyrene foam (not shown). It is formed between the partition plate 17b, and its upper end portion 50a is open to the vegetable cold air return port 46 as shown in FIG. Further, as described above, the vegetable room fan 53 is incorporated in the lower part of the vegetable room passage section 50, and its outlet 54 is opened in the vegetable room 8, so that the cold air from the vegetable cold air inlet 44 and the The vegetable compartment cold air from the first vegetable cold air inlet 47 and the second vegetable cold air inlet 51 is blown into the vegetable compartment 8. The air outlet 54 of the vegetable compartment fan 53 opens toward the rear surface of a lower vegetable storage case 49a, which will be described later, and the lower rear portion of the lower vegetable storage case 49a facing the vegetable compartment fan 53 is located forward in the lower part. It is configured so that the cold air from the vegetable compartment fan 53 intensively flows into the lower space of the lower vegetable storage case 49a.

  Further, as shown in FIG. 10, a second heater 56 for preventing condensation, such as a sheathed heater, is embedded in the surface of the back partition wall 17 facing the cooling chamber 16. This second heater 56 is installed in a low temperature cooling chamber temperature zone that is positioned opposite to the upper portion of the cooling chamber 16 and below the refrigerator compartment damper 31 that opens and closes the cool air from the refrigerator compartment 16 to the refrigerator compartment 7. Has been. That is, the second heater 56 is provided in a portion facing the cooling chamber temperature zone between the cooling chamber 16 and the refrigerating chamber damper 31 in the rear partition wall body 17 constituting the entire rear surface of the vegetable chamber 8. Downsizing.

  Further, the cooling fan 19, the first heater 23 in the partition plate 6, the second heater 56 in the rear partition wall body 17, etc. A connector connecting portion (box 57 (see FIG. 14)) of the electric member is installed, and electrical connection is made in the cooling chamber cold air conveyance path 30 that becomes this cooling chamber temperature zone.

  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.

  In addition, the upper opening edge of the upper vegetable storage case 49b of the vegetable storage case 48 is located in a portion adjacent to the partition plate 6 in the upper portion of the vegetable compartment 8 and is located in an upper portion from the vegetable cold air inlet 44. The cool air from the entrance 44 is configured not to enter directly into the upper vegetable storage case 49b and the lower vegetable storage case 49a of the vegetable storage case 48. A lid that closes the upper vegetable storage case 49b may be provided at the upper opening of the upper vegetable storage case 49b to prevent cold air from entering the vegetable storage case 48 more reliably.

  Further, as shown in FIG. 21, the lower vegetable storage case 49a is divided into left and right by a case partition plate 58, and the side opposite to the vegetable cold air inlet 44, in this embodiment, the right side portion is made deeper by one step to make a plastic bottle. And a non-vegetable storage section 59 (hereinafter referred to as a storage section such as a plastic bottle). In addition, this container part 59 for PET bottles etc. is good also as dividing the inside of the vegetable compartment 8 back and forth, and making the front side part a container part etc. for PET bottles.

<Refrigerator configuration>
As shown in FIG. 4 and the like, the refrigerator compartment 7 includes a plurality of storage shelves 60 and a partial chamber 61 that can be cooled to a semi-refrigeration temperature zone. A mouth 36 (both see FIG. 7) is provided. An operation unit 62 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.

<Freezer configuration>
Also. As already described with reference to FIG. 10, the freezer compartment 9 is formed with a freezer cold air inlet 42 communicating with the lower part of the cooler compartment air passage 30 at the back of the rear partition wall body 17 at the upper part of the rear wall, and the lower part of the rear wall. 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 63 placed on the frame of the door 12 as shown in FIG. 4 and the like, and an ice making device 64 is provided above the freezer compartment 63. It has been incorporated.

  Next, the control configuration of the refrigerator will be described.

<Control configuration>
FIG. 22 shows a control block diagram in the refrigerator of the present embodiment, 65 is a refrigerator temperature detecting means, 66 is a vegetable room temperature detecting means, 67 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 68 denotes a control unit that performs overall control of the entire refrigerator. The control unit 68 is configured by a microcomputer or the like, and the refrigerator compartment according to control software built in advance based on outputs from the refrigerator compartment temperature detecting means 65 and the freezer compartment temperature detecting means 67. 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. Further, the controller 68 controls the operation of the vegetable compartment fan 53 incorporated in the vegetable compartment passage portion 50 of the vegetable compartment 8 based on outputs from the refrigerator compartment temperature detecting means 65 and the vegetable compartment temperature detecting means 66. . Specifically, the vegetable compartment fan 53 is driven when one of the temperatures detected by the refrigerator compartment temperature detecting means 65 and the vegetable compartment temperature detecting means 66 detects a temperature higher than the set temperature. Furthermore, the control unit 68 drives the first and second heaters 23 and 56 based on the output from the vegetable room temperature detecting means 66.

  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 68 according to the temperature set 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 by the cooling fan 19 from the cooling chamber cold-air conveyance path 30 to the refrigerator compartment 7 and the freezer compartment 9, and the cold air supplied to the refrigerator compartment 7 cools the refrigerator compartment 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 68 operating / stopping the compressor 15 and the cooling fan 19 based on the temperatures detected by the refrigerator temperature detecting means 65 and the freezer temperature detecting means 67, and the refrigerator temperature damper 31. The freezer damper 34 is controlled to be opened and closed so that each chamber is maintained in a set temperature range.

  Next, the cooling operation of the vegetable compartment 8 will be described.

  The vegetable room 8 is cooled by the cold air after cooling from the refrigerated cold air return passage 33 being supplied from the vegetable cold air inlet 44 provided in the cold air return passage 38 as shown in FIG. This cold air gently flows into the vegetable room 8 from the vegetable cold air inlet 44 through the vegetable room passage portion 50 by the blowing pressure of the cooling fan 19, and the lower and upper vegetable storage cases 49 a and 49 b of the vegetable storage case 48 and the vegetable room. 8, the vegetables and plastic bottles stored in the vegetable storage case 48 are indirectly cooled from the outer periphery of the case, and the chilled cold air return passage 33 is passed through the vegetable cold air return port 46. It circulates from the cold air return duct 40 to the cooling chamber 16 via.

Here, in the refrigerator shown in this embodiment, as shown in FIG. 12, the vegetable room fan 53 is provided in the vegetable room passage portion 50 of the vegetable room 8, and when the vegetable room fan 53 rotates, the return passage 38 is opened. Most of the flowing return cold air is sucked from the vegetable cold air inlet 44 into the vegetable room passage 50,
The vegetables are supplied from the outlet 54 of the vegetable room fan 53 toward the rear surface of the lower vegetable storage case 49a in the vegetable room 8.

  The cold air supplied toward the lower vegetable storage case 49a of the vegetable compartment 8 is sent to the cooling fan 19 through the space between the lower vegetable storage case 49a and the upper vegetable storage case 49b and the bottom and inner peripheral walls of the vegetable compartment 8. It flows faster than the flow when it is circulated by the wind pressure, and returns from the vegetable cold air return port 46 to the cooling chamber 16 via the return passage 38 and circulates. At that time, cool air other than the cool air returning to the cooling chamber 16 is circulated from the first vegetable cold air inlet 47 and the second vegetable cold air inlet 51 provided in the upper portion of the vegetable chamber 8. The lower vegetables in the vegetable compartment 8 are again sucked into the vegetable compartment fan 53 from the upper opening of the vegetable compartment passage portion 50 communicating with these passages 51a and from the outlet 54 of the vegetable compartment fan 53 again. It is supplied toward the storage case 49a and diffuses or circulates in the vegetable compartment 8.

  Next, prevention of condensation in the vegetable room 8 will be described.

  Although the vegetable compartment 8 is cooled as described above, it receives cold radiation from the cooling compartment 16 located on the back surface and the freezer compartment 9 located below, and the vicinity of the lower part of the back surface is likely to be lowered in temperature as in the past. . In particular, the cold radiation from the cooling chamber 16 is strong, and the cooling radiation from the cooling chamber 16 itself to the refrigerator compartment damper 31 as well as the cooling chamber 16 itself is the cooling chamber cold air conveyance path 30 zone from the cooling chamber 16 itself. The cooling chamber temperature region is the same as that in the cryogenic temperature zone 16, and strong cold radiation is received at the portion facing the cooling chamber temperature zone up to the refrigerator compartment damper 31, and this portion is easily lowered in temperature.

  In this refrigerator, the temperature is lowered by the cold air that diffuses or circulates in the vegetable compartment 8 by driving the vegetable compartment fan 53 and suppresses the temperature reduction. To do. That is, the cold air in the vegetable room 8 is diffused and / or circulated by the vegetable room fan 53, and this diffused and / or circulated cold air is located below and below the cold radiation from the cooling room temperature zone located at the back of the vegetable room 8. The temperature in the lower part of the back of the vegetable room, which tends to be lowered by the cold radiation from the freezer room 9, is diffused in the vegetable room 8, the temperature in the vegetable room 8 is lowered to cool the inside of the vegetable room 8, and at the same time, near the lower part of the back of the vegetable room Suppresses extremely low temperatures and temperature differences and prevents condensation.

  In this way, local temperature reduction in the vegetable room 8 is suppressed, but if this state continues for a long time, the diffusion or circulation of the cold air by the vegetable room fan 53 cannot suppress the temperature reduction and condensation occurs. May drop to an easy temperature.

  In such a case, in this refrigerator, the control unit 68 causes the second heater 56 provided in a portion facing the cooling room temperature zone on the back of the vegetable room to generate heat. Thereby, the temperature fall of the vegetable room back lower part vicinity by the cold radiation from a cooling room temperature zone is suppressed reliably, and the situation which leads to dew condensation can be avoided. In particular, in this embodiment, the first heater 23 is provided in the partition plate 6 that partitions the vegetable compartment 8 and the freezer compartment 9, and the first heater 23 is also heated together with the second heater 56. Thus, it is possible to reliably suppress the cold radiation of the vegetables, and to efficiently prevent the lowering of the temperature in the vicinity of the lower part of the back of the vegetable room, thereby preventing the deterioration of vegetables due to the occurrence of condensation.

  In addition, the second heater 56 is limited to the cooling room temperature zone from the cooling chamber 16 to the refrigerator compartment damper 31 in the rear partition wall body 17 serving as the back wall of the vegetable room 8, and thus is small. Therefore, it is possible to reliably prevent the temperature of the portion from being lowered by raising the temperature of the portion that is likely to be lowered while minimizing the cost increase and power consumption, and to efficiently suppress the occurrence of dew condensation.

  As described above, this refrigerator prevents condensation due to local low temperatures in the vegetable compartment 8, so the size of the cooler 18 for generating cold air is increased so that the cooling compartment 16 spans the freezer compartment 9 and the vegetable compartment 8. Even in a large-capacity large-sized refrigerator, condensation due to cold radiation from the cooling chamber 16 can be suppressed. Therefore, in the refrigerator in the whole area from the small capacity small refrigerator to the large capacity large refrigerator, it is possible to suppress the vegetable deterioration due to the dew condensation water generated by the cold radiation from the cooling chamber 16 and cool and store the vegetables in a good state. It becomes possible. In addition, this refrigerator is a middle vegetable room type refrigerator in which the vegetable room 8 is provided in the upper and lower central parts of the refrigerator body 1 between the refrigerator compartment 7 and the freezer compartment 9, so that condensation occurs as described above. This is effective because it is possible to improve the usability of a user who is mainly used for taking in and out vegetables and the like while preventing and storing the vegetables in a good condition.

  On the other hand, the above-described refrigerator is mounted with the partition plate 6 in which the first heater 23 is embedded so as to communicate between the inner and outer boxes 2 and 3 of the refrigerator main body, and foamed heat insulation together with the refrigerator main body 1 when the refrigerator main body is molded. Since the material 4 is filled and integrated with the refrigerator main body 1, the rear partition wall body 17 is mounted on the refrigerator main body 1 so as to form a cooling chamber 16 on the back of the vegetable compartment 8. As with the main body 1, it can be insulated by the foam heat insulating material 4 having a high heat insulating property, the heat insulating property can be improved, the amount of cold radiation from the freezer compartment 9 to the vegetable compartment 8 can be reduced, and the partition plate 6 itself. Can be made thinner, and the capacity of the vegetable compartment 8 or the freezer compartment 9 can be increased accordingly.

  At that time, that is, when the partition plate 6 is integrated with the refrigerator main body 1, the partition plate 6 presses a jig (not shown) against the projecting piece 21 and the upward projecting piece 22 as described above, and the refrigerator main body as it is. Since the partition plate 6 is positioned and held at a predetermined position by being pressed against the inner surface of the inner box 3 of the unit 1, the foam heat insulating material 4 is filled and foamed between the upper and lower surface members 6a and 6b from the refrigerator main body 1 side and integrated. , And can be integrated simultaneously with the molding of the refrigerator main body 1 to improve productivity.

  In addition, the rear partition wall 17 constituting the rear wall of the vegetable compartment 8 is retrofitted after the refrigerator main body is molded, and the cooling fan 19 is attached to the upper part of the partition plate 6 and is located on the back of the vegetable compartment 8 Therefore, the cooling fan 19 can be attached to the partition plate 6 from the inside of the vegetable compartment 8 before attaching the rear partition wall body 17, and if the rear partition wall body 17 is attached or detached, the cooling fan 19 can be attached. The maintenance of 19 can also be performed, and it can be set as a refrigerator with good assembly and maintenance.

  As described above, this refrigerator can prevent condensation in the vegetable room 8 and cool and store vegetables in a good state, and has good productivity and maintainability. Since this also has various effects, this will be described below.

  First, since the vegetable room fan 53 provided in the vegetable room 8 is configured to diffuse or circulate cold air toward the outer periphery of the lower vegetable storage case 49a and the upper vegetable storage case 49b of the vegetable storage case 48, the vegetable room Vegetables that are apt to be generated when cold air diffused or circulated by the fan 53 enters the lower vegetable storage case 49a and the upper vegetable storage case 49b and flows between the vegetables, and the cold air flows between the vegetables. Thus, the vegetables can be stored in a cool and fresh state by preventing the deterioration of drying.

  In particular, in this embodiment, the first vegetable cold air suction port 47 that also serves as a cold air suction port that diffuses or circulates in the vegetable compartment above the vegetable storage case 48 constituted by the lower vegetable storage case 49a and the upper vegetable storage case 49b. Since the second vegetable cold air suction port 51 is provided, the cold air that diffuses or circulates in the vegetable compartment 8 does not enter the vegetable storage case 48 including the lower vegetable storage case 49a and the upper vegetable storage case 49b. It flows to the 1st vegetable cold air suction inlet 47 and the 2nd vegetable cold air suction inlet 51, can prevent the drying deterioration of a vegetable more reliably, and can preserve | save a vegetable in a fresh and favorable state by cooling. This can be further increased by bringing the upper opening edge of the upper vegetable storage case 49 close to the partition plate 5 that also serves as the vegetable room ceiling, and more effectively if a cover that covers the upper surface opening is provided. be able to.

  In addition, since the vegetable compartment fan 53 is located below the upper opening edge of the vegetable storage case 48 constituted by the lower vegetable storage case 49a and the upper vegetable storage case 49b, it is blown from the vegetable chamber fan 53. The cold air diffuses or circulates in the vegetable storage case 48, particularly in the vicinity of the bottom surface and lower outer periphery of the lower vegetable storage case 49a. Therefore, the cold air diffused and / or circulated by the vegetable compartment fan 53 is more difficult to enter the vegetable storage case 48, and the dry deterioration of the vegetables caused by the cold air entering and circulating in the vegetable storage case 48 from this point. Can be reliably prevented, and the vegetables can be stored in a cooler and fresher state.

  The vegetable compartment 8 has a vegetable compartment passage portion 50 communicating with the vegetable cold air inlet 44, and a vegetable compartment fan 53 is provided below the vegetable compartment passage portion 50. By exhibiting such a function, cold air can be efficiently taken into and diffused and / or circulated into the vegetable compartment 8, whereby the occurrence of condensation in the vegetable compartment 8 can be more efficiently suppressed.

  In addition, in this embodiment, the vegetable storage case 48 divides the inside of the lower vegetable storage case 49a left and right, and is provided with a storage portion 59 such as a PET bottle or a pack on one side thereof. Since the vegetable room fan 53 is provided on the back part of the vegetable room on the side of the unit 59 and the cold air in the vegetable room is diffused or circulated toward the storage unit 59 such as the plastic bottle, the vegetable room fan 53 The cold air circulates intensively around the PET bottle storage section 59, so that the PET bottles and packs stored in the PET bottle storage section 59 can be efficiently cooled. In particular, drinking water such as PET bottles and packs stored in the PET bottle storage 59 is effective because it has a larger heat capacity than vegetables and is difficult to cool. The rise can be efficiently suppressed.

  In this embodiment, since the first vegetable cold air inlet 47 provided in the vegetable compartment 8 together with the vegetable compartment fan 53 is also provided in the portion of the vegetable storage case 48 on the storage portion 59 side such as a plastic bottle, The cold air from the vegetable room fan 53 to the vegetable cold air return port 46 can be circulated more efficiently and intensively to the storage part such as a plastic bottle, which is effective.

  In addition, since the second vegetable cold air suction port 51 that is also another suction port for circulating the cold air in the vegetable room 8 is provided in the vegetable room fan 53 and the upper part of the vegetable room at a substantially diagonal position, The cold air from the vegetable compartment fan 53 diffuses and circulates through the bottom portion of the container portion 59 of the vegetable storage case 48 forward through the bottom portion 59 of the vegetable storage case 48 while obliquely passing through the vegetable compartment 8 and circulates. Since it flows to the vegetable cold air inlet 51, the lower vegetable storage case 49a and the upper vegetable storage case are prevented while the cold air is prevented from entering the vegetable room case composed of the lower vegetable storage case 49a and the upper vegetable storage case 49b. Cold air can be diffused or circulated in a wide range around the outer periphery of the vegetable case 49b, and vegetables, plastic bottles and the like can be cooled effectively.

  Further, in this refrigerator, a communication passage 39 is formed between the refrigerated cold air return passage 32 and the refrigerated cold air return passage 33, and when the vegetable compartment fan 53 rotates, the suction force of the vegetable compartment fan 53 causes the low temperature in the refrigerated cold air forward passage 32 to be low. Fresh cold air is mixed into the refrigerated cold air return passage 33 and supplied from the vegetable cold air inlet 44 into the vegetable compartment 8 through the return passage 38. That is, the vegetable room 8 is cooled by the return cold air having a relatively high temperature after cooling from the cold room 7, but in this refrigerator, the cold air after cooling the cold room is rotated by the rotation of the vegetable room fan 53. The vegetable room 8 is cooled with cold air that has been cooled by mixing low temperature fresh cold air. Therefore, the vegetable compartment 8 can be effectively cooled, and the vegetable compartment 8 is reliably cooled even when the cooling load condition is bad, for example, when many vegetables, plastic bottles, etc. are temporarily stored. be able to. In addition, the amount of low-temperature fresh cold air taken in through the communication passage 39 can be increased by increasing the number of rotations of the vegetable compartment fan 53, and a large amount of room temperature PET bottles having a large heat capacity are stored in summer. Even at times, this can be reliably cooled. Moreover, since the vegetable compartment 8 can be reliably cooled, the occurrence of dew condensation due to cold radiation from the cooling compartment 16 can be efficiently suppressed, and the vegetables can be stored in a cooled state in a good state.

  The vegetable compartment fan 53 operates when the refrigerator compartment damper 31 is opened by the output from the refrigerator compartment temperature detecting means 65 to cool the refrigerator compartment 7 and the vegetable compartment 8, and diffuses the cold air in the vegetable compartment 8 or Although it circulates, in this embodiment, since it controls also based on the detection temperature of the vegetable compartment temperature detection means 66 provided in the vegetable compartment 8, the temperature of the refrigerator compartment 7 is high, and cooling operation is not performed. Even when the temperature of the vegetable compartment 8 becomes equal to or higher than the set temperature, the vegetable compartment 8 starts to rotate and diffuses and / or circulates cold air in the vegetable compartment 8. Therefore, when the temperature of the vegetable room becomes high and a large temperature difference is caused by the cold radiation from the cooling chamber 16 and the condition is likely to cause dew condensation, the vegetable room fan 53 rotates to eliminate this and effectively generate dew condensation. Can be prevented.

  If the temperature of the vegetable room 8 becomes higher than the second set temperature set to a temperature slightly higher than the set temperature in spite of the rotation of the vegetable room fan 53, the vegetable room fan The number of rotations of 53 can be increased to increase the diffusion or circulation of the cold air, and the amount of fresh cold air taken in can be increased and the vegetable room 8 can be reliably cooled. Therefore, the lack of cooling in the summer can be resolved, and good cooling storage of vegetables and the like can be reliably realized to increase the reliability of the refrigerator.

  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 heater for preventing condensation is provided on the partition plate 6 on the bottom as well as on the back of the vegetable compartment 8. The first heater 23 on the bottom of the vegetable compartment is the amount of cold radiation from the freezer compartment 9. Depending on the case, it may be omitted.

  The refrigerator according to the present invention suppresses the occurrence of condensation in the vegetable room even in a refrigerator with a large cooling capacity, can cool and store vegetables in a good state, and is widely applied to refrigerators for business use as well as home use. be able to.

DESCRIPTION OF SYMBOLS 1 Refrigerator main body 2 Outer box 3 Inner box 4 Foam insulation material 5,6 Partition plate 7 Refrigeration room 8 Vegetable room 9 Freezing room 10, 11, 12 Door 14 Machine room 15 Compressor 16 Cooling room 17 Back surface partition wall body 18 Cooling Unit 19 Cooling fan 20 Opening 21 Projection piece 22 Upward projecting piece 23 First heater 24 Heat insulation barrier 25 Opening for cold air return passage 26 Passage opening 27 Tank installation part 28 Defrost heater 29 Drain pan 30 Cooling room cold air conveyance path 31 Refrigeration Room damper 32 Refrigerated cold air return passage 33 Refrigerated cold air return passage 34 Freezer compartment damper 35 Refrigerated cold air inlet 36 Refrigerated cold air return port 37 Outward passage 38 Return passage 39 Communication passage 40 Cold air return duct 41 Back wall body 42 Refrigerated cold air inlet 43 Refrigerated cold air return Mouth 44 Vegetable cold air inlet 46 Vegetable cold air return port 47 First vegetable cold air inlet 47a First passage 48 Vegetable harvest Case 49a Lower vegetable storage case 49b Upper vegetable storage case 50 Vegetable room passage 51 Second vegetable cold air inlet 51a Second passage 52 Second cold air circulation path 53 Vegetable room fan 54 Air outlet 55 Inclined surface 56 Second Heater 57 Connector 58 Case divider 59 Non-vegetable storage (PET bottle storage)
60 Storage Shelf 61 Partial Room 62 Operation Unit 63 Freezer Room Case 64 Ice Making Device 65 Cold Room Temperature Detection Means 66 Vegetable Room Temperature Detection Means 67 Freezer Room Temperature Detection Means 68 Control Unit

Claims (4)

A refrigerator compartment is provided at the top of the refrigerator body, a freezer compartment at the bottom, a vegetable compartment partitioned by a partition plate above the freezer compartment, a cooling chamber for generating cold air is provided behind the freezer compartment, and the cooling compartment is cooled And a cooling fan that supplies the cool air generated by the cooler to each chamber, and a return path for returning the cool air that has circulated through the refrigerating chamber to the rear of the vegetable storage case in the vegetable chamber and the vegetable A refrigerator comprising a vegetable room fan for blowing cool air in the room, wherein the vegetable room fan is disposed in communication with the return passage. The refrigerator according to claim 1, wherein the vegetable compartment fan is disposed to face a rear surface of the vegetable storage case. The refrigerator according to claim 1 or 2, wherein the cooling fan is attached to an upper portion of the partition plate and is located on a back surface of the vegetable compartment. The vegetable storage case is divided into left and right by a case partition plate, and either the left or right partition part can be stowed and stored with a plastic bottle, and the vegetable compartment fan is disposed behind the one partition part. The refrigerator according to any one of claims 1 to 3, wherein the refrigerator is characterized.

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