JP6796750B2 - refrigerator - Google Patents

Description

The present invention relates to a refrigerator, and particularly to a refrigerator compartment configuration thereof.

Generally, a refrigerator is equipped with a refrigerating room, and the refrigerating room is provided with a plurality of storage shelves detachably to divide the refrigerating room space into a plurality of upper and lower spaces. It is provided (see, for example, Patent Document 1).

FIG. 31 shows the refrigerator described in Patent Document 1, in which the refrigerator 100 has a refrigerating chamber 101 at the upper part, an ice making room (not shown) and a switching room 102 at the lower part, and a freezing room 103 and vegetables at the lower part. It has a chamber 104. A plurality of storage shelves 105 are detachably provided in the refrigerating room 101 to partition the refrigerating room space into a plurality of upper and lower spaces, and a storage box 106 is freely pulled out from the lowermost portion to serve as a storage shelf. It is a low-temperature storage room 108 that is covered with a ceiling plate 107 and separated from the refrigerating room space.

Japanese Unexamined Patent Publication No. 2012-220116

Since the refrigerator described in Patent Document 1 is provided with a simple low-temperature storage chamber 108 in the refrigerating chamber 101, it is close to the refrigerating temperature range and slightly lower than that, although it is not enough to be stored frozen, from 0 ° C. It has the advantage of being easy to use because it can store foodstuffs that you want to store at low temperatures at a chilled and partial temperature of 3 ° C (hereinafter referred to as the new temperature range) and store them in a refrigerator.

However, recently, dietary habits have diversified, and the types of foodstuffs that are desired to be stored at low temperature in a new temperature range are increasing. Therefore, it is difficult to cool and store these various foodstuffs in an optimum state only with the low temperature storage chamber 108. Is becoming.

An object of the present invention is to improve the usability of a refrigerator compartment .

In order to achieve the above object, the present invention has a refrigerating chamber, a first storage chamber provided below the refrigerating chamber, and a second storage chamber provided above the first storage chamber in the refrigerating chamber. A room is provided, and a cold air passage through which cold air flows and an outlet for supplying cold air flowing through the cold air passage to the first storage room are provided on the ceiling surface of the first storage room. A cold air inlet for supplying cold air to the second storage chamber is provided on the back surface, and a heater is provided on the bottom surface of the second storage chamber .

The present invention can improve the usability of the refrigerator compartment .

Front view of the refrigerator according to the first embodiment of the present invention Front view showing the inside of the refrigerator Cross section of the refrigerator Explanatory drawing explaining the cold air flow of the refrigerator Perspective view of the cooling chamber of the refrigerator from the back side Cross-sectional view showing the cooling chamber of the refrigerator Cross-sectional view showing the vegetable compartment duct and the refrigerator compartment return duct of the refrigerator Perspective view showing the refrigerator compartment of the refrigerator Perspective view of the low temperature storage room provided in the refrigerator compartment of the refrigerator An exploded perspective view showing the refrigerator compartment of the refrigerator Cross-sectional view showing the refrigerator compartment of the refrigerator Cross-sectional view showing the low temperature storage chamber of the refrigerator Enlarged sectional view of the main part showing the low temperature storage room of the refrigerator Front view showing the refrigerator compartment of the refrigerator Perspective view showing the back of the low temperature storage room of the refrigerator Enlarged perspective view of the main part showing the back of the low temperature storage room of the refrigerator Side view showing the refrigerating room lighting device part of the refrigerator Enlarged side view showing the refrigerating room lighting device part of the refrigerator Explanatory drawing showing a cross section of a refrigerating room lighting device part of the refrigerator Explanatory drawing showing the refrigerating room lighting device part of the refrigerator as seen from above Explanatory drawing showing the lighting device of the refrigerator Explanatory drawing showing the lighting device of the refrigerator disassembled (A) Plan view showing the relationship between the light source unit and the light guide plate in the lighting device of the refrigerator, (b) the same side view, (c) the same front view. Front view of the refrigerator compartment when the lighting equipment of the refrigerator is installed on both sides of the refrigerator compartment duct. Cross-sectional view of the refrigerator compartment when the lighting equipment of the refrigerator is provided on both sides of the refrigerator compartment duct. Perspective view of the refrigerator compartment when the lighting equipment of the refrigerator is installed on both sides of the refrigerator compartment duct. Enlarged perspective view of the main part of the refrigerator compartment when the lighting equipment of the refrigerator is installed on both sides of the refrigerator duct. Cross-sectional view of the refrigerating room duct when the lighting device of the refrigerator is provided on both sides of the refrigerating room duct. Perspective view of the refrigerator compartment when the lighting device of the refrigerator is installed on the ceiling surface of the refrigerator compartment. Cross-sectional view of the refrigerator compartment when the lighting device of the refrigerator is installed on the ceiling surface of the refrigerator compartment. Sectional view of a conventional refrigerator

The first invention is a refrigerator main body, a refrigerating chamber provided in the refrigerator main body, a cooling chamber for generating cold air supplied to the refrigerating chamber, and a refrigerating chamber duct for guiding cold air from the cooling chamber to the refrigerating chamber. And a low-temperature storage chamber provided in the refrigerating chamber, at least two of the low-temperature storage chambers are provided, and each of the low-temperature storage chambers is configured to be capable of cooling and storing the foodstuffs stored inside at different temperatures.

As a result, various foodstuffs to be stored at a low temperature in the new temperature range can be cooled and stored at a temperature suitable for each or a temperature closer to the suitable temperature, which greatly improves usability.

The second invention is the first invention, wherein the at least two low-temperature storage chambers have different cooling temperatures by varying the amount of cold air supplied from the refrigerating chamber duct.

As a result, the cooling temperature of each low-temperature storage chamber can be easily changed by using a damper, and the temperature can be provided at low cost.

In the third invention, in the first or second invention, at least one of the at least two low temperature storage chambers is configured to disperse and supply cold air from the ceiling surface, and the other low temperature storage chamber is provided from the back surface. It is configured to supply cold air.

As a result, the low-temperature storage chamber that disperses and supplies cold air from the ceiling surface can efficiently supply cold air over the entire low-temperature storage chamber, so that the volume can be increased as compared with the low-temperature storage chamber that supplies cold air from the back surface. At the same time, the low-temperature storage chamber that supplies cold air from the back surface can be made into a slightly higher low-temperature storage chamber with a small amount of cold air supply, and can efficiently respond to the diversification of foods.

In the fourth invention, in the first to third inventions, the low temperature storage chamber located at least below the at least two low temperature storage chambers is a low temperature storage chamber having a lower temperature, and the low temperature storage chamber is located above. The storage chamber is configured as a low temperature storage chamber having a temperature slightly higher than that of the low temperature storage chamber.

As a result, it is possible to reduce the influence of cold radiation from the low temperature storage chamber on the low temperature side to the low temperature storage chamber on the high temperature side, which is a concern when the low temperature storage chambers are stacked one on top of the other. It becomes easier to maintain the temperature of the room at each set temperature, and it becomes possible to cool and store various foodstuffs in a more optimal state. That is, if a lower low-temperature storage chamber is provided above, the bottom temperature of the low-temperature storage chamber becomes lower due to the sedimentation action of cold air, and cold radiation to the lower low-temperature storage chamber becomes intense. Is eliminated, and good cooling storage is possible.

A fifth aspect of the present invention is the fourth invention, wherein the ceiling surface of the low temperature storage chamber on the lower temperature side is provided as a heat insulating structure, and a cold air outlet for dispersing and supplying cold air is provided in the heat insulating component portion.

As a result, the low temperature storage chamber on the low temperature side can efficiently distribute the cold air to the whole, and the foodstuffs stored inside are uniformly and well cooled and stored at the low temperature by setting the low temperature. At the same time, cold radiation to the low temperature storage room on the high temperature side, which is located above it, can be suppressed by the heat insulation configuration of the ceiling surface, and the foodstuffs stored in the low temperature storage room on the high temperature side are also good. Can be stored cooled in.

The sixth invention is the fourth or fifth invention, wherein the low temperature storage chamber on the higher temperature side located at least above the at least two low temperature storage chambers has a heater laid on the bottom surface thereof.

As a result, if the temperature of the low temperature storage chamber on the higher temperature side, which is located above, becomes too low than the set temperature due to cold radiation from the low temperature storage chamber on the lower temperature side, the heater is heated to maintain the set temperature. The foodstuffs stored in the low temperature storage chamber on the high temperature side can be satisfactorily cooled and stored without being overcooled.

According to a seventh aspect of the invention, in the first to sixth aspects, at least two low-temperature storage chambers are provided with containers inside, and a refrigerating chamber is provided between the rear end surface of each container and the back wall of each low-temperature storage chamber. In addition, a cold air return passage portion for returning the cold air of each of the low temperature storage chambers to the cooling chamber is provided.

As a result, the cold air in the refrigerating chamber and each low-temperature storage chamber can be returned to the cooling chamber through the cold air return passage provided at the back of each of the low-temperature storage chambers, and there is no need to provide a separate cold air duct. By increasing the volume of the refrigerator compartment, many foodstuffs can be stored in the refrigerator.

According to the eighth aspect of the invention, in the first to seventh inventions, the low-temperature storage chamber located below the at least two low-temperature storage chambers has an ice-making water storage tank on either the left or right side. In addition to being installed, the front door of the low-temperature storage chamber is designed to have a sense of unity with the front surface of the ice-making water storage tank.

As a result, the design of the front portion of the low temperature storage chamber is enhanced, the appearance when the door of the refrigerating chamber is opened is improved, and the quality of the refrigerator can be improved. This is effective because the design of the front door of the low-temperature storage room located above can be further enhanced by making the design unified.

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 16 are views for explaining the entire refrigerator and the configuration of each part, and FIGS. 17 to 30 are views for explaining a lighting device attached to the refrigerator compartment.

(1. Overall configuration of refrigerator)
First, the overall configuration of the refrigerator will be described with reference to FIGS. 1 to 4.

In FIGS. 1 to 4, the refrigerator according to the present embodiment includes a refrigerator main body 1 having an open front, and the refrigerator main body 1 includes a metal outer box 2, a hard resin inner box 3, and the outer box. It is composed of a foamed heat insulating material 4 which is foam-filled between the box 2 and the inner box 3, and a plurality of storage chambers are formed by partitions such as partition plates 5 and 6.

Further, each storage chamber of the refrigerator main body 1 is openable and closable by a rotary door 7 or a drawer type door 8, 9, 10 and 11 which adopts the same heat insulating structure as the refrigerator main body 1.

The storage chambers formed in the refrigerator main body 1 are the uppermost refrigerating chamber 14, the temperature zone switchable switching chamber 15 provided under the refrigerating chamber 14, the ice making chamber 16 provided next to the refrigerating chamber 14, the switching chamber 15, and the switching chamber 15. It is composed of a freezing chamber 18 provided between the ice making chamber 16 and the vegetable compartment 17 at the bottom.

Further, a cooling chamber 23 is provided on the back surface of the freezing chamber 18 of the refrigerator main body 1, and a cooler 24 for generating cold air and a cooling fan 25 for supplying cold air to the respective chambers are installed in the cooling chamber 23. There is. Further below the cooler 24, a defrosting means 26 (hereinafter, referred to as a glass tube heater) composed of a glass tube heater or the like is provided.

The cooler 24 constitutes a refrigeration cycle by connecting a compressor 27, a condenser (not shown), a heat radiating pipe for heat dissipation (not shown), and a capillary tube (not shown) in an annular shape. Cooling is performed by circulating the refrigerant compressed by the compressor 27.

Further, the cooling fan 25 is provided above the cooler 24, and the refrigerating chamber 14, the freezing chamber 18, the vegetable compartment 17, etc. are provided via the refrigerating chamber duct 28, the freezing chamber duct 29, and the vegetable compartment duct 30 connected to the downstream side thereof. It is designed to supply cold air to each of these chambers.

(2. Cooling room configuration)
The cooling chamber configuration will be described with reference to FIGS. 3 to 6.

The cooling chamber 23 is located on the back surface of the freezing chamber 18, and as shown in FIG. 6, a cooling fan 25 is provided above the cooler 24 by using the cooling chamber forming plate 31. Further, a freezing chamber back plate 32 is mounted on the front side of the cooling chamber forming plate 31, and the freezing chamber back plate 32 covers the downstream side of the cooling fan 25 and communicates with the cooling fan downstream side with the cooling chamber 23. The freezing chamber duct 29 is formed.

Further, as shown in FIGS. 4 and 5, the refrigerating chamber duct 28 of the refrigerating chamber 14 and the vegetable compartment duct 30 of the vegetable compartment 17 are separately and independently formed at different positions on the downstream side of the cooling fan 25. It is connected with. As a result, the cold air generated by the cooler 24 is supplied separately to the first cold air supply port 33 and the second cold air supply port 34 by the cooling fan 25, and becomes the refrigerating room duct 28 and the vegetable room duct 30. Supply.

(3. Refrigerator room configuration)
Next, the refrigerator compartment and its cooling configuration will be described with reference to FIGS. 3 and 8 to 16.

The refrigerating chamber 14 is located at the uppermost part of the refrigerator main body 1, and as shown in FIGS. 3 and 11, a plurality of shelves 20 made of a translucent material are detachably provided to raise and lower the refrigerating chamber space. In addition to partitioning into a plurality of spaces, two low-temperature storage chambers 21 and 22 are provided in two upper and lower stages at the bottom.

The above-mentioned refrigerating chamber duct 28 is provided on the back surface of the refrigerating chamber 14. As shown in FIG. 10, the refrigerating chamber duct 28 is configured by covering the surface of the duct member 28a made of styrofoam on the refrigerating chamber side with a resin duct cover 28b, and partitions the refrigerating chamber 14 and the freezing chamber 18. It is mounted on the back surface of the refrigerating chamber so as to cover the first cold air supply port 33 of the partition plate 5 and communicates with the cooling chamber 23.

A refrigerating chamber damper 37 is incorporated in the first cold air supply port 33, and the amount of cold air supplied from the cooling chamber 23 to the refrigerating chamber 14 is controlled by opening and closing the refrigerating chamber damper 37.

Further, the refrigerating chamber damper 37 is a low-temperature chamber that controls the amount of cold air supplied to one of the low-temperature storage chambers 21 provided in the lower part of the refrigerating chamber 14 in addition to the cooling chamber damper portion 39 that controls the amount of cold air supplied to the refrigerating chamber 14. It is a dual damper having a damper unit 40 for refrigeration, and is driven by a motor (not shown) for both refrigerating and low temperature chambers in the refrigerating damper driving motor unit 41.

(4. Low temperature storage room configuration of refrigerating room)
Next, the low temperature storage chamber provided in the refrigerating chamber 14 and its cooling configuration will be described with reference to FIGS. 8 to 16.

The low temperature storage chambers 21 and 22 have different cooling temperature zones. For example, of the low-temperature storage chambers 21 and 22, the low-temperature storage chamber 21 provided below has a configuration capable of cooling to a lower temperature of -2 to 3 ° C., which is suitable for micro-freezing storage in this example (hereinafter, this lower temperature). The low temperature storage chamber 21 that can be cooled to a temperature is referred to as a partial freezer chamber (hereinafter abbreviated as a partial chamber). Further, the upper low temperature storage chamber 22 has a configuration capable of cooling to a higher temperature of about 1 ° C., which is lower than the refrigerating chamber 14 but higher than the partial chamber 21 (hereinafter, the low temperature storage chamber 22 capable of cooling to this higher temperature). Is called a chilled room).

As shown in FIG. 8, the partial chamber 21 is located next to the water storage tank chamber by the inner wall surface of the inner box of the refrigerator body 1, the water storage tank chamber forming plate (not shown), and the ceiling plate member 50 which is also the bottom surface of the chilled chamber 22. The compartment is formed, and the front opening portion is openable and closable by the partial chamber door 51. The partial chamber door 51 is designed to have a sense of unity with the front portion of the water storage tank 65 provided in the water storage tank chamber 65. Then, as shown in FIGS. 11 and 12, a partial chamber container 52 is provided inside the partial chamber 21 so as to be freely taken in and out.

A heat insulating material 53 made of styrofoam or the like is incorporated in the ceiling plate member 50 constituting the partial chamber 21, and a cold air passage 54 for a low temperature room having a large number of cold air outlets 54a is formed in the heat insulating material 53. .. Then, the cold air passage 54 for the low temperature chamber is connected to the opening 61 for the low temperature chamber on the downstream side of the damper portion 40 for the low temperature chamber of the refrigerating chamber duct 28, and cold air is supplied from the refrigerating chamber duct 28 into the partial chamber 21 for cooling. It is a configuration to do. As a result, the cooling temperature of the partial chamber 21 can be controlled by opening and closing the damper portion 40 for the low temperature chamber.

On the other hand, as shown in FIG. 8, the chilled chamber 22 is formed to fill the width of the refrigerating chamber between the ceiling plate 43, which is the lowermost shelf plate, and the partial chamber 21 located below the ceiling plate 43. As shown, the chilled chamber container 44 is provided so as to be freely taken in and out. A cold air inlet 22a communicating with the downstream side of the refrigerator damper portion 39 of the refrigerating chamber duct 28 is provided behind the chilled chamber 22, and cold air is taken in and cooled exclusively for the chilled chamber from the cold air inlet 22a. It has become. As a result, the chilled chamber 22 can be cooled to a temperature slightly lower than that of the refrigerating chamber 14.

Further, in the chilled chamber 22, a temperature control heater 49 is laid under the chilled chamber container 44, and when the chilled chamber temperature becomes lower than the set temperature due to cold radiation from the partial chamber 21 located below, the chilled chamber 22 becomes the temperature control heater 49. It is configured to be energized and maintained at the set temperature.

The temperature control heater 49 is controlled by a chilled chamber temperature sensor (not shown) provided at an appropriate position in the chilled chamber 22.

Further, as shown in FIG. 13, the chilled chamber 22 is provided with a slit-shaped cold air return port (chilled side) 45 at the rear portion of the ceiling plate 43, and the cold air return port (chilled side) 45 is provided at the rear portion of the chilled chamber container 44. ) 45 is provided with a cold air return passage portion (chilled side) 46 connected to the refrigerating chamber 14. Further, as shown in FIG. 11, an opening 48 connected to the inside of the refrigerating chamber 14 is provided between the front end portion of the chilled chamber container 44 and the lower part of the chilled chamber door / handle portion 47, and the cold air in the refrigerating chamber 14 is provided. Is configured to flow to the cold air return passage portion (chilled side) 46 through a gap (not shown) on the outer periphery of the chilled chamber container 44 together with the cold air after cooling the chilled chamber overflowing from the chilled chamber container 44. ..

On the other hand, as shown in FIGS. 13, 15 and 16, the partial chamber 21 is provided with a slit-shaped cold air return port (partial side) 55 at the rear portion of the ceiling plate member 50 as well as the chilled chamber 22. A space is provided behind the partial chamber container 52 to form a cold air return passage portion (partial side) 56, and a cold air return passage portion (chilled side) 46 behind the chilled chamber 22 is provided with cold air and a chilled chamber. The cold air flows to the cold air return passage portion (partial side) 56.

Further, the partial chamber 21 is provided with a cold air confluence return port 57 communicating with the cold air return passage portion (partial side) 56 at the rear portion of the partition plate 5 which is also the bottom surface thereof, and the refrigerating chamber return duct 58 is provided at the cold air confluence return port 57. Is connected so that the cold air that has cooled the refrigerating chamber 14 and the chilled chamber 22 merges with the partial chamber cooling air that overflows from the partial chamber container 52 and returns to the cooling chamber 23.

That is, the duct portion for returning the cold air of the refrigerating chamber 14, the chilled chamber 22, and the partial chamber 21 to the cooling chamber 23 is formed by utilizing the rear space of the chilled chamber 22 and the partial chamber 21.

The cold air return port (chilled side) 45 and the cold air return port (partial side) 55 are provided at positions facing each other vertically, and the cold air return port (partial side) 55 and the cold air confluence return port 57 are located at misaligned positions. It is provided.

Further, the refrigerating chamber return duct 58 for returning the cold air to the cooling chamber 23 is installed on the side (horizontal) of the cooling chamber 23 as shown by the alternate long and short dash line in FIGS. 4 and 5, and the lower end side thereof is the cooling chamber. It is configured to return to the cooling chamber 23 by opening the lower side surface of the 23.

Furthermore, in the partial chamber 21, the refrigerating chamber 14 is located between the cold air return port (partial side) 55 of the cold air return passage portion (partial side) 56 and the cold air confluence return port 57, as shown in FIG. A refrigerating room temperature sensor 59 is provided to detect the temperature of the refrigerating room and control the damper unit 39 for the refrigerating room. Then, a temperature sensor 60 for a low temperature storage room is provided on the diagonal portion opposite to the refrigerating room temperature sensor 59 and the refrigerating room duct 28 on the opposite side to detect the temperature of the partial room 21 and control the damper unit 40 for the low temperature room. There is.

The refrigerating room temperature sensor 59 and the low temperature storage room temperature sensor 60 are both mounted and integrated with a mounting portion (not shown) provided in a part of the duct cover 28b constituting the refrigerating room return duct 58. is there.

(5. Lighting configuration of the refrigerator compartment)
Next, the lighting of the refrigerator compartment 14 will be described with reference to FIGS. 17 to 30.

Since the refrigerator compartment 14 is configured to open the door 7 and put a hand inside to put in and take out foodstuffs, a lighting device 80 is provided to improve visibility when the door 7 is opened. In this embodiment, as shown in 17 and 18, the lighting device 80 is provided on the side wall near the opening of the refrigerating chamber 14.

As shown in FIGS. 23A to 23C, the lighting device 80 includes a light guide plate 81 and a light source unit 82 that irradiates the light guide plate 81.

The light guide plate 81 is formed of a strip-shaped elongated resin flat plate having a predetermined length, the end surface of the short side at least one end side thereof is a light receiving surface 83, and the surface in the longitudinal direction intersecting the light emitting surface 84. It is said. The resin constituting the light guide plate 81 is composed of a resin having light transmittance and capable of propagating light incident from the light receiving surface 83 to the light emitting surface 84, for example, a styrene resin, styrene and (meth) acrylic. It is composed of a resin made of a copolymer of a compound, a (meth) acrylic resin, a polycarbonate resin, and the like.

Further, the light guide plate 81 has a light receiving surface 83 mirror-processed, and the surface 85 on the side opposite to the light receiving surface 83 has fine irregularities or incident light that effectively directs the incident light toward the light receiving surface 83. Fine uneven stripes that intersect are formed. The light guide plate 81 has a thickness of about the same as or slightly larger than that of the light source described later of the light source unit 82, and in this example, the thickness is about 3 mm to 10 mm.

On the other hand, the light source unit 82 includes a light source 86 composed of an LED that illuminates the light receiving surface 83 of the light guide plate 81 and a light source substrate 88 to which a connector 87 for connecting a lead wire is directly attached, and the light source 86 is a light source plate 81. The light source substrate 88 is arranged so as to face the light receiving surface 83 so as to face the end surface of the light guide plate 81 on the light receiving surface 83 side. As a result, the lighting device 80 has a shape in which the flat plate-shaped light source unit 82 is located on one end side of the long and thin light guide plate 81, and has a substantially L-shaped shape as a whole, and the light source plate 81 portion is thin and the light source unit 80 The part has a thick structure. It should be noted that one or two light sources 86 are provided, although it depends on the width of the light receiving surface 83 of the light guide plate 81.

The lighting device 80 has a minute gap between the light source 86 and the light receiving surface 83, 0.5 mm in this example.
The light source substrate 88 is arranged to face the light receiving surface 83 side of the light guide plate 81 so as to form a gap to some extent, and when the light guide plate 81 thermally expands, the light source 86 is pressed and damaged. I try to prevent that.

A cover member 89 made of a light-shielding material that covers the outer peripheral portion of the gap between the light source 86 and the light receiving surface 83 is attached to the end of the light guide plate 81 on the light source 86 side. Covers a minute gap between the light source 86 and the light receiving surface 83.

Further, a light-shielding auxiliary cover member 90 is attached to the end surface of the light guide plate 81 on the side opposite to the light receiving surface 83. The auxiliary cover member 90 prevents the light incident from the light receiving surface 83 from leaking from the end surface, and is formed of or reflected with a material capable of reflecting the light from the light source 86 into the light guide plate 81. It is preferable to keep it.

As shown in FIGS. 17 and 18, the lighting device 80 configured as described above is embedded in the side wall near the opening of the refrigerating chamber 14 in the vertical direction, and is provided on the wall side of the refrigerating chamber to provide the lighting device 80. As shown in FIG. 19, the concave portion 91 of the above has a shape that follows the overall shape of the lighting device 80, that is, a substantially L-shape. More specifically, the portion facing the light guide plate 81 is shallow, and the portion facing the light source unit 82 is deep. Then, the light guide plate 81 is positioned in the shallow portion of the concave portion 91, and the light source unit 82 is positioned in the deep portion.

As shown in FIG. 19, a concave case 92 having the same shape as the concave portion 91 is attached to the concave portion 91 on the side wall of the refrigerator compartment, and the lighting device 80 is incorporated in the concave case 92 and then has the concave shape. As shown in FIGS. 20 to 22, a cover 93 made of a translucent resin material is attached to the opening surface of the case 92 by attaching a claw to the side wall of the refrigerating chamber 14.

Then, the lighting device 80 is set so that the light emitting surface 84 of the light guide plate 81 faces the corner portion at the back of the refrigerating chamber 14 in a state of being attached to the side wall of the refrigerating chamber, and the surface of the cover 93 covering the light emitting device 80 is also the same. It is tilted in the direction.

(6. Freezing room configuration)
Next, the freezing room configuration will be described with reference to FIGS. 3 and 6.

The freezing chamber 18 is located below the refrigerating chamber 14 and in front of the cooling chamber 23, and the freezing chamber container 62 composed of the lower container 62a and the upper container 62b placed above the lower container 62a is opened and closed by the drawer of the door 11. It is provided so that it can be taken in and out freely. Then, as described above, the freezing chamber back plate 32 is arranged between the cooling chamber 23, and the freezing chamber back plate 32 and the cooling chamber forming plate 31 communicate with the downstream side of the cooling fan of the cooling chamber 23. A chamber duct 29 is formed.

The freezing chamber back plate 32 is provided with a freezing cold air outlet 63 in a plurality of upper and lower stages so as to supply cold air to the ice making chamber 16 and the switching chamber 15 together with the freezing chamber 18.

Further, the freezing chamber 18 is provided with a freezing cold air return port 64 communicating with the lower part of the cooling chamber 23 at the lower part of the freezing chamber back plate 32. A grill 67 is attached to the freezing chamber side of the freezing / cold air return port 64, and a freezing chamber damper 68 is provided on the cooling chamber side.

The freezer compartment damper 68 controls the opening and closing of the cold air supplied to the freezer chamber 18, and is formed of a heat-resistant resin, for example, a damper frame 70 formed of a polyphenylene sulfide resin (PPS resin) with the same heat-resistant resin. A plurality of flaps 71, in this example, three flaps 71 are provided and configured. The freezing chamber damper 68 is driven by a freezing damper driving motor unit (not shown) so as to open on the cooling chamber 23 side opposite to the freezing chamber 18.

Further, the freezer compartment damper 68 is provided so that its lower portion is located above the glass tube heater 26, and is set so that the warm and cold air heated by the glass tube heater 26 can be reliably touched during defrosting.

(7. Vegetable room composition)
Next, the structure of the vegetable compartment will be described with reference to FIGS. 3, 4 and 5.

As shown in FIG. 3, the vegetable compartment 17 is located at the bottom of the refrigerator main body 1 below the freezing chamber 18, and like the freezing chamber 18, the vegetable compartment container 17a is provided so that it can be freely taken in and out by opening and closing the drawer of the door 10. is there. As shown in FIG. 5, the vegetable compartment duct 30 for supplying cold air to the vegetable compartment 17 is superposed on the rear surface of the refrigerating chamber return duct 58 next to the cooling chamber 23, and the upper portion thereof is provided in the cooling chamber 23. It is connected to the second cold air supply port 34.

The second cold air supply port 34 is below the partition plate 5 that separates the refrigerating chamber 14 and the freezing chamber 18 located above the cooling chamber 23, that is, within the rear projection area of the freezing chamber 18, and is the cooling fan 25. It is provided on the downstream side of the cooling fan at approximately the same height. The lower end of the vegetable compartment duct 30 connected to the second cold air supply port 34 is open to the upper part of the vegetable compartment 17 so as to supply cold air to the vegetable compartment 17.

The vegetable compartment duct 30 is connected to the second cold air supply port 34 by opening the side portion of the upper end portion thereof, and is connected to the vegetable chamber duct 30 in the vicinity of the connection portion, specifically, in a position range substantially the same as the cooling fan 25. A chamber damper 75 is incorporated.

The cold air after cooling the vegetable compartment 17 is returned to the cooling chamber 23 via a vegetable compartment return duct (not shown) provided on the ceiling surface thereof.

The operation and action of the refrigerator configured as described above will be described below.

When the temperature of the refrigerator compartment 14 becomes higher than the set temperature, the refrigerator drives the compressor 27 and the cooling fan 25, and supplies the cold air generated by the cooler 24 to the downstream side of the cooling fan 25.

The cold air supplied to the downstream side of the cooling fan 25 is supplied to the refrigerating room 14, the vegetable room 17, and the freezing room 18 via the refrigerating room duct 28, the vegetable room duct 30, and the freezing room duct 29 to cool each room. To do. The supply of cold air to each of the chambers is controlled by opening and closing the refrigerating chamber damper 37, the refrigerating chamber damper 37, and the freezing chamber damper 68, respectively, and cools the refrigerating chamber 14, the vegetable chamber 17, and the freezing chamber 18 to their respective set temperatures. ..

Here, the first cold air supply port 33, which is the cold air supply port to the refrigerating chamber 14, and the second cold air supply port 34, which is the cold air supply port to the vegetable chamber 17, are provided separately and independently from the cooling chamber 23. Since the cold air is independently supplied from the cooling chamber 23 directly to each duct, the vegetable compartment 17 set to a higher temperature than the refrigerating chamber 14 reaches the set temperature, and the vegetable compartment damper 75 is closed. However, the amount of cold air supplied to the refrigerator compartment duct 28 does not change, and the same amount as when the vegetable compartment damper 75 is open is supplied.

Therefore, the cooling chamber 14 can be cooled at the same level as when the cold air is being supplied to the vegetable compartment 17, and can be stably performed without being affected by the opening and closing of the vegetable compartment damper 75.

Further, since the vegetable compartment duct 30 is directly connected to the downstream side of the cooling fan of the cooling chamber 23 and connected to the cooling chamber within the range of the rear projection area of the freezing chamber 18 located in front of the cooling chamber 23, vegetables. The chamber duct 30 does not pass through the partition plate 5 portion that separates the refrigerating chamber 14 and the freezing chamber 18 above the cooling chamber 23, so that the duct length is shortened and the passage resistance is reduced accordingly. Can be done.

As a result, the amount of cold air circulation of the entire refrigerator circulated through the vegetable compartment duct 30 and the refrigerator compartment duct 28 can be increased, that is, the amount of cold air circulation of the entire refrigerator circulated by the cooling fan 25 can be increased. Therefore, the cooling performance can be improved by the amount of increase in the amount of cold air circulation.

Next, cooling of the low temperature storage chamber in the refrigerating chamber will be described.

The cold air supplied from the cooling chamber 23 to the refrigerating chamber duct 28 is supplied to the partial chamber 21 from the low temperature chamber opening 61 via the low temperature chamber damper portion 40 provided in the refrigerating chamber damper 37.

The cold air supplied to the partial chamber 21 is blown out from a large number of cold air outlets 54a through the cold air passages 54 for the low temperature chamber in the heat insulating material 53 provided in the ceiling plate member 50, and the cold air is blown out over almost the entire area in the partial chamber 21. Is distributed and supplied.

Therefore, the entire partial chamber 21 can be efficiently cooled, and even if the volume is larger than that of the chilled chamber 22, which will be described later, the partial chamber 21 can be sufficiently cooled, and many foodstuffs can be efficiently cooled and stored.

Further, the partial chamber 21 can control the amount of cold air supplied by opening and closing the damper unit 40 for the low temperature chamber, which operates based on the output from the temperature sensor 60 for the low temperature storage chamber, and can control the cooling temperature thereof. Therefore, the partial chamber 21 can be cooled in a wide temperature range from a lower temperature to a relatively higher temperature. Therefore, various foodstuffs can be cooled and stored at the optimum temperature.

On the other hand, in the chilled chamber 22, the cold air supplied to the refrigerating chamber duct 28 is supplied from the cold air inlet 22a communicating with the downstream side of the cooling chamber damper portion 39 of the refrigerating chamber duct 28 and cooled.

Since the cold air supplied to the chilled chamber 22 is supplied via the refrigerating chamber damper section 39, it is controlled by opening and closing the refrigerating chamber damper section 39 that operates based on the output from the refrigerating room temperature sensor 59, and is controlled by the refrigerating chamber. Cooling is controlled in the same manner as in 14.

At this time, since the chilled chamber 22 is a considerably smaller space than the refrigerating chamber 14, the ratio of fresh cold air to the space is high, and cold radiation from the partial chamber 21 located below is also added, so that the refrigerating chamber 22 The distribution of cold air to the refrigerating chamber 14 and the chilled chamber 22 is designed so as to be cooled to a temperature slightly lower than 14.

Therefore, it is possible to cool and store the foodstuff to be cooled at a temperature slightly lower than that of the refrigerator compartment 14.

Further, when the temperature of the partial chamber 21 located below the chilled chamber 22 is set to a lower temperature, the cold radiation from the partial chamber 21 becomes stronger and the temperature drops, that is, the temperature is too cold. May become.

However, in such a case, the temperature control heater 49 laid in the lower part of the chilled chamber generates heat based on the output from the chilled chamber temperature sensor (not shown) and maintains the chilled chamber 22 at the set temperature. That is, the temperature of the chilled chamber 22 can be accurately controlled by turning on / off the temperature control heater 49 on the bottom surface of the chilled chamber 22 based on the output from the chilled chamber temperature sensor.

The temperature of the chilled chamber 22 can be controlled by providing a damper to open and close the cold air supply as in the case of the refrigerating chamber 14 and the partial chamber 21, but in this case, a damper installation space is required and the size is increased. It reduces the volume of the refrigerator compartment. However, if the heater method is used as in this embodiment, it is possible to control the temperature of the chilled chamber easily without reducing the volume of the refrigerating chamber without requiring a space or a passage configuration for providing a damper, which is effective.

As described above, the plurality of low temperature storage chambers such as the partial chamber 21 and the chilled chamber 22 are not only provided but also provided as low temperature storage chambers in which the cooling temperature of each can be controlled independently. Therefore, although the cooling temperature is lower than the refrigerating room temperature, various foodstuffs that are slightly different from each other can be cooled and stored in an optimum state, and the usability is improved.

Moreover, in this refrigerator, even if the vegetable compartment damper 75 is opened and closed to control the cooling of the vegetable compartment 17, the amount of cold air supplied to the refrigerating chamber 14 does not change and becomes constant and stable. The temperature accuracy of the chilled chamber 22 and the partial chamber 21 that require high control accuracy can be made as high as desired, and thereby the storage quality of foodstuffs in each of the partial chamber 21 and the chilled chamber 22 can be improved. ..

In this embodiment, two cold storage chambers, a chilled chamber 22 and a partial chamber 21, are illustrated, but more chambers may be provided.

Next, the operation of returning the cold air to the cooling chamber 23 after cooling the refrigerating chamber 14, the chilled chamber 22, and the partial chamber 21 will also be described.

The cold air that has cooled the refrigerating chamber 14 first passes through the gap between the cold air return port (chilled side) 45 behind the ceiling surface of the chilled chamber 22 and the opening 48 below the chilled chamber door / handle 47 and the outer periphery of the chilled chamber container 44. It flows to the cold air return passage portion (chilled side) 46 behind the chilled chamber 22.

The cold air that has flowed to the cold air return passage portion (chilled side) 46 behind the chilled chamber 22 is the cold air return passage portion behind the partial chamber 21 from the cold air return port (partial side) 55 provided on the ceiling plate member 50 of the partial chamber 21. (Partial side) Flows to 56.

Then, the cold air that has flowed to the cold air return passage portion (partial side) 56 behind the partial chamber 21 is passed through the refrigerating chamber duct 28 from the cold air confluence return port 57 provided in the partition plate 5 that is the bottom surface of the partial chamber 21. Return to 23.

At this time, the cold air that cooled the chilled chamber 22 overflows from the chilled chamber container 44 and merges with the cold air from the refrigerating chamber 14 at the cold air return passage portion (chilled side) 46 in the chilled chamber 22, and the ceiling of the partial chamber 21. From the refrigerating cold air return port (partial side) 55 provided on the plate member 50, passing through the cold air return passage portion (partial side) 56 behind the partial chamber 21, and from the cold air confluence return port 57 to the cooling chamber 23 via the refrigerating chamber duct 28. Return.

Further, the cold air in the partial chamber 21 overflows from the partial chamber container 52, flows into the cold air return passage portion (partial side) 56 behind the partial chamber 21, and merges with the cold air from the refrigerating chamber 14 and the chilled chamber 22 to cool air. It returns to the cooling chamber 23 from the merging return port 57 through the refrigerating chamber duct 28.

As described above, this refrigerator has a cold air return passage portion (chilled side) 46, a cold air return passage portion (partial side) 56, and a cold air return port (chilled side) provided behind the chilled chamber 22 and the partial chamber 21 in the refrigerating chamber 14. ) 45 and the cold air of the refrigerating chamber 14 and the cold air of the chilled chamber 22 and the partial chamber 21 can be returned to the cooling chamber 23 via the cold air return port (partial side) 55. Therefore, it is not necessary to separately provide a duct portion for returning the cold air of each of these chambers to the cooling chamber 23 in the refrigerating chamber 14 along the refrigerating chamber duct 28. Therefore, the internal volume of the refrigerating chamber 14 can be increased by that amount, and more foodstuffs can be cooled and stored.

Further, the mainstream of cold air in the cold air return passage portion (partial side) 56 flowing from the refrigerating chamber 14 to the cold air confluence return port 57 via the chilled chamber 22 is the cold air return port (partial side) 55 and the cold air confluence return. It is on the line connecting the mouth 57. This cold air includes chilled chamber cold air and partial chamber cold air, but most of them are refrigerating chamber cold air. In this refrigerator, between the cold air return port (partial side) 55 through which the mainstream cold air flows and the cold air confluence return port 57. Since the refrigerator compartment temperature sensor 59 is provided, the temperature of the refrigerator compartment 14 can be accurately detected. Therefore, the temperature of the refrigerating chamber 14 can be accurately controlled to the set temperature.

Further, the temperature sensor 60 for the low temperature storage chamber of the partial chamber 21 has a cold air return port (partial side) 55 and a cold air confluence return port 57 in which the cold air flow of the cold air return passage portion (partial side) 56 in the partial chamber 21 is the mainstream. Since the part other than the line with, in this example, the refrigerating room temperature sensor 59 is provided on the diagonal part on the opposite side of the vegetable room duct 30, the temperature of the partial room 21 can be accurately detected and controlled accurately. can do. That is, the diagonal portion on the opposite side of the refrigerating room temperature sensor 59 and the vegetable room duct 30 is less cold air in the refrigerating room, and most of it is cold air in the partial room 21 and is floating. Therefore, the temperature inside the partial chamber 21 can be accurately detected, and the temperature can be controlled with high accuracy.

This also applies to the temperature sensor for the chilled chamber 22 (not shown). In this case, the temperature sensor 59 of the cold air return passage portion (chilled side) 46 is diagonally opposite to the refrigerating chamber temperature sensor 59 with the vegetable compartment duct 30 in between. If it is provided in the portion, the same effect can be obtained, and the temperature of the chilled chamber 22 can be controlled with high accuracy.

Further, since the sensors such as the refrigerating room temperature sensor 59 and the temperature sensor 60 for the low temperature storage room are attached to the duct cover 28b of the refrigerating room duct 28, they are incorporated in a predetermined position by mounting the duct cover 28b in the refrigerating room. Can be done. Therefore, the workability can be significantly improved and the productivity can be improved as compared with the case where the duct cover 28b and each sensor are incorporated separately.

Further, since the cold air return port (chilled side) 45, the cold air return port (partial side) 55 and the cold air confluence return port 57 constituting the cold air return passage in the refrigerating chamber 14 are provided so as to be displaced from each other. Even if debris such as foodstuffs may fall from the return port (chilled side) 45 or the cold air return port (partial side) 55 through the cold air return port (chilled side) 45, this is on the cold air confluence return port 57. It is possible to prevent it from falling into the air and clogging it or reducing the opening area, and it is possible to maintain good cold air return performance for a long period of time.

As described above, this refrigerator can cool and store various foodstuffs that are near the refrigerating temperature range and want to be stored at a temperature slightly lower than that at a temperature suitable for each, or at a temperature closer to that temperature, greatly improving usability. It is a thing.

In addition, the refrigerator of the present embodiment also has the following effects.

That is, in this refrigerator, the lighting device 80 is provided in the refrigerating chamber 14, and the lighting device 80 can provide good-looking lighting with a small number of light sources.

More specifically, in the lighting device 80 of the refrigerating chamber 14, the light source 86 is arranged so as to face the light receiving surface 83 at one end of the light guide plate 81. Therefore, when the light source 86 is turned on, the light is received at one end of the light guide plate 81. It is incident on the light guide plate 81 from the surface 83, and the light emitting surface 84 of the light guide plate 81 emits bright light. Then, the light emission of the light guide plate 81 is such that the entire light emitting surface 84 emits light, so that there is no break in the light. Therefore, it is possible to irradiate the inside of the refrigerating chamber 14 with a small number of light sources 86, and it is possible to illuminate the refrigerating chamber 14 without interruption, which is inexpensive and has excellent design.

In particular, in this embodiment, since the light guide plate 81 forms fine irregularities or uneven stripes on the surface facing the light emitting surface 84, the light incident from the light receiving surface 83 efficiently heads toward the light emitting surface 84. The brightness of the light emitting surface 84 is improved. Therefore, brighter lighting is possible. For this, instead of the fine unevenness or uneven stripes, a reflective sheet may be provided on the surface facing the light emitting surface 84, and the same effect can be obtained.

Further, the lighting device 80 has an effect that the deterioration of the heat insulating performance of the refrigerating chamber 14 caused by the provision of the lighting device can be suppressed, and good heat insulating performance can be ensured.

That is, in general, a lighting device in a refrigerating room is configured by arranging a plurality of light sources in a row on a lighting board as described above, and this board is embedded in the wall surface of the refrigerating room and attached. Since such a lighting device has a light source and a lighting substrate as a set over the entire length, the entire lighting device has a certain thickness, and the wall thickness of the portion where the lighting device is embedded becomes thin. Since the set portion of the light source and the lighting substrate has a certain range of length, the portion where the wall thickness becomes thin also becomes long, which reduces the heat insulating performance of the refrigerating chamber.

However, in the lighting device 80 of this embodiment, the short side of the light guide plate 81 is a light receiving surface 83, and the light source substrate 88 of the light source unit 82 is arranged so as to face only the short side of the light guide plate 81 which is the light receiving surface 83. Therefore, the light guide plate 81 portion that occupies most of the lighting device 80 has a thin thickness without the light source substrate 88. Therefore, the wall thickness of the refrigerating chamber 14 can be increased by that amount to ensure good heat insulation. That is, the wall thickness of the refrigerating chamber 14 can be increased by the amount shown by T in FIG. 19 to ensure good heat insulating properties.

Further, the wall thickness of the refrigerating chamber 14 is thin in the light source substrate 88 portion at the end of the light guide plate 81, but the ratio of the light source substrate 88 portion to the entire lighting device 80 is extremely small as compared with the light guide plate 81 portion. The influence on the heat insulating property of the refrigerating chamber 14 can be suppressed to a slight extent.

From the above, in this refrigerator, the wall thickness of the refrigerating chamber 14 can be increased to improve the heat insulating property, and the refrigerator can be made with high energy saving.

Further, since the wall thickness is increased, the flow of the foamed heat insulating material 4 to be filled between the outer box 2 and the inner box 3 constituting the refrigerating chamber wall can be improved. That is, when the foamed heat insulating material 4 such as urethane foam is filled between the outer box 2 and the inner box 3 constituting the refrigerating chamber wall, the light guide plate 81 portion has a wide wall thickness interval, so that the material has good fluidity. Further, in the 88 portion of the light source substrate, the wall thickness interval is narrow, so that the flow is poor, but since the portion where the interval is narrow is small, the fluidity of the foamed heat insulating material 4 is improved as a whole. be able to.

Therefore, it is possible to prevent the foamed heat insulating material 4 in the wall portion of the portion where the lighting device 80 is provided from being filled with the foamed heat insulating material 4, and the filling density thereof can be increased, so that the heat insulating property is further improved. Can be.

Further, in this embodiment, since the light source substrate 88 of the light source unit 82 is provided with the connector 87, the maximum length of the light source substrate 88 is increased by the amount of the connector 87 provided, and the wall thickness of the refrigerating chamber 14 is increased. Becomes thinner. However, since the ratio of the light source unit 82 including the light source substrate 88 to the entire lighting device 80 is much smaller than that of the light guide plate 81 as described above, the influence on the heat insulating property of the refrigerating chamber 14 is suppressed to a small extent. it can. Then, while suppressing such an influence, the lead wire connection to the light source unit 82 is facilitated, and the disconnection at the soldered portion, which is a concern when the lead wire is directly soldered to the light source substrate 88, is prevented. It is possible to ensure energy saving and stabilize quality.

Further, since the light source 86 of the light source unit 82 and the light receiving surface 83 of the light guide plate 81 are covered with a light-shielding cover member 89, the light source 86 should be installed slightly away from the light receiving surface 83 of the light guide plate 81. Can be done. As a result, even if the light guide plate 81 undergoes thermal expansion, it is possible to prevent the light guide plate 81 from pressing the light source 86 and damaging it due to the thermal expansion. Even with such a configuration, it is possible to prevent light from leaking from between the light source 86 and the light receiving surface 83 of the light guide plate 81, in other words, the vicinity of the end portion of the light guide plate becomes too bright. That is, it is possible to prevent damage to the light source 86 and prevent light leakage at the same time, and it is possible to improve the reliability and the appearance at the same time.

In addition, since the light guide plate 81 of the lighting device 80 is also covered with the cover member 89 at the end opposite to the light source 86, light leakage from this end can be prevented and the appearance can be improved. .. If the cover member 89 can reflect the light from the light source 86 toward the light source side, the light leakage from the end of the light guide plate 81 can be prevented and the light emission of the light guide plate 81 can be further increased. It can be bright and good lighting is possible.

A light source 86 may also be provided on the end side of the light guide plate 81, whereby the light emission of the light guide plate 81 can be made brighter, and illumination at a higher level becomes possible.

On the other hand, the refrigerating room 14 has a plurality of translucent shelf boards 20, but since the lighting device 80 is provided on the wall surface of the refrigerating room in front of the front end of the shelf board 20, the space between the shelf boards 20 is provided. The light of the lighting device 80 comes into the space from the front end of each shelf board 20. Therefore, it is possible to brightly irradiate the foodstuffs on the shelf board in the portion far away from the lighting device 80, and it is possible to improve the visibility in the refrigerator compartment 14.

Further, since the light guide plate 81 of the lighting device 80 is arranged so that the direction of the light emitting surface 84 is set so as to irradiate the light toward the back of the refrigerating chamber 14, the light emitting surface 84 is brightly irradiated to the back of the refrigerating chamber 14. This makes it possible to improve the visibility inside the refrigerator compartment 14.

Furthermore, when the lighting device 80 is attached to the wall surface of the refrigerator compartment 14, the light source unit 82 is arranged so that the light source unit 82 is located above the refrigerator compartment 14, that is, the light source unit 82 is located above the light guide plate 81. As a result, even if the temperature of the light source unit 82 portion rises due to the lighting of the light source 86, the upper part of the refrigerating chamber 14 in which the light source unit 82 portion is located is a portion where the temperature is relatively high, so that the refrigerating chamber 14 is cooled. The effect on the temperature can be reduced, and the energy saving performance can be improved accordingly. In addition, if the light source unit 32 is provided below the light guide plate 81, there is a concern that water droplets generated by dew condensation or the like may flow down to the light guide plate 81 and hit the charging part of the light source 86 or the like. It is possible to make it highly safe.

In FIGS. 17 and 18, the lighting device 80 is provided on the side wall of the refrigerating chamber 14, but this is shown on both sides of the refrigerating chamber duct 28 in the refrigerating chamber 14 as shown in FIGS. 24 to 28. It may be attached to the surface portion in the vertical direction, or may be provided in the horizontal direction on the top surface of the refrigerating chamber 14 as shown in FIGS. 29 and 30, or may be a combination thereof.

Here, a lighting device 80 attached to both side surfaces of the refrigerating chamber duct 28 will be described with reference to FIGS. 24 to 28.

In FIGS. 24 to 28, the configuration of the lighting device 80 itself is the same as that of the lighting device 80 described above, but the light guide plate 81 of the lighting device 80 is located along both side surfaces of the refrigerating chamber duct 28. It is arranged in the vertical direction. At this time, the light guide plate 81 is arranged at a position where the cold air outlets 28c provided on both side walls of the refrigerating chamber duct 28 are not blocked. In this example, the cold air discharge port 28c is located behind the light guide plate 81, but it may be located in front of the light guide plate 81.

In arranging the lighting device 80, the light guide plate 81 of the light source unit 82 has the same configuration as the case where it is provided on the side wall of the refrigerating chamber 14 except that the light emitting surface 83 is arranged so as to face diagonally forward. The figure number is added and the description is omitted.

As described above, by providing the lighting device 80 on both side surfaces of the refrigerating chamber duct 28, it is possible to effectively brighten the inner portion of the refrigerating chamber 14, which tends to be dark, which is effective.

In addition, this refrigerator also has the following effects.

That is, since the vegetable compartment damper 75 provided in the vegetable compartment 17 of the refrigerator is provided at a height position that overlaps with the cooling fan 25 of the cooling chamber 23 as described above, the effect of improving the cooling performance is utilized. It is possible to prevent malfunction and ensure the reliability of the refrigerator.

More specifically, since the vegetable compartment 17 is set to a relatively high temperature and has a high humidity, when the vegetable compartment damper 75 is closed and the cold air circulation is stopped, the warm and cold air with high humidity is generated in the vegetable compartment. It may flow back from the inside of the 17 into the vegetable compartment duct 30. When this high-humidity warm / cold air touches the vegetable compartment damper 75, moisture condenses, and when the dew-condensed water resumes cooling in the vegetable compartment 17, the cold air supplied to the vegetable compartment 17 freezes and the vegetable compartment damper 75 freezes. Opening and closing may be defective.

However, in this refrigerator, the vegetable compartment damper 75 is provided at a height position that overlaps with the cooling fan 25, so that the height of the cooler 24 is increased by keeping a distance from the vegetable compartment 17 to the vegetable compartment damper 75. It can be separated upward by the size, and when the cold air circulation is stopped, the hot and cold air with high humidity in the vegetable compartment 17 rises into the vegetable compartment duct 30 and reaches the vegetable compartment damper 75 to prevent dew condensation. it can.

Therefore, it is possible to prevent the vegetable compartment damper 75 from freezing and causing malfunction when the cold air circulation to the vegetable compartment 17 is resumed, and reliability can be ensured.

Further, the freezing chamber 18 of this refrigerator is provided with a freezing chamber damper 68, but the freezing chamber damper 68 is provided not on the freezing cold air outlet 63 side of the freezing chamber 18 but on the freezing cold air return port 64 side at the bottom of the freezing chamber. Therefore, it is possible to obtain a stable damper operation while simplifying the configuration, improve the temperature control accuracy of the freezing chamber 18, and improve the reliability.

That is, the freezing chambers 18 are provided adjacent to each other on the front surface of the cooling chamber 23, and the freezing cold air outlet 63 provided above the freezing chamber 18 communicates with the downstream side of the cooling fan of the cooling chamber 23. Therefore, during the defrosting operation of the cooler 24, the hot and cold air with high humidity after defrosting rises in the cooling chamber 23 in the draft and reaches the freezing cold air outlet 63. Therefore, if the freezing chamber damper 68 is provided on the freezing cold air outlet 63 side, the hot and cold air of high temperature and high humidity touches the freezing chamber damper 68 to cause dew condensation, and freezes when the cooling operation is restarted after the defrosting operation is completed. There is a risk of malfunction. Therefore, in order to prevent this freezing, the freezing chamber damper 68 must be provided with a heater dedicated to preventing freezing, which complicates the configuration.

However, if the freezing chamber damper 68 is provided in the freezing cold air return port 64 at the bottom of the cooling chamber as in this embodiment, most of the high humidity warm / cold air generated during defrosting is drafted and returned to the frozen cold air. Since it is generated above the mouth 64 and rises as it is, the amount of warm and cold air that comes into contact with the freezer damper 68 is very small and the humidity is low, and the freezing caused by dew condensation is also slight. Moreover, this freezing can be prevented by the residual heat of the glass tube heater 26 for defrosting. Therefore, the operation of the freezer damper 68 can be made stable, and since the glass tube heater 26 for defrosting is used, a heater dedicated to defrosting is not required and the configuration is simple. be able to. That is, the temperature control accuracy can be improved and the reliability can be improved at the same time.

Further, since the freezer damper 68 is composed of a combination of a plurality of flaps 71, the front-rear width dimension when each flap 71 is opened can be significantly reduced as compared with the case where each flap 71 is composed of one flap. Therefore, the freezing chamber damper 68 itself can be made compact, and at the same time, the space for providing the freezing chamber damper 68 itself can be significantly reduced, and the volume in the freezing chamber 18 can be increased accordingly.

In addition, since each flap 71 of the freezing chamber damper 68 is provided so as to open toward the cooling chamber 23 side, the volume in the freezing chamber 18 can be increased from this point as well. That is, when each of the flaps 71 is opened toward the freezing chamber 18 side, each of the flaps 71 protrudes toward the freezing chamber 18 side, and the freezing chamber container 62 must be positioned forward by that amount. , The volume of the freezing chamber container 62, that is, the volume of the freezing chamber 18 has to be reduced, but such a problem can be solved and the volume of the freezing chamber can be increased as in this embodiment. is there.

The refrigerator according to the present invention has been described above using the above-described embodiment, but the present invention is not limited thereto. That is, it should be considered that the embodiments disclosed this time are exemplary in all respects and not restrictive. That is, the scope of the present invention is shown not by the above description but by the scope of claims, and it is intended that all modifications within the meaning and scope equivalent to the scope of claims are included.

INDUSTRIAL APPLICABILITY The present invention provides an easy-to-use refrigerator that can cool and store various foodstuffs that are near the refrigerating temperature range and that are to be stored at a temperature slightly lower than that, in an optimum state or in a more optimum state, and that respond to the diversification of foodstuffs. be able to. Therefore, it can be applied to refrigerators of various types and sizes such as household and commercial use.

1 Refrigerator body 4 Foam insulation 7, 8, 9, 10, 11 Doors 14 Refrigerator room 20 Shelf board 21 Low temperature storage room (partial room)
22 Low temperature storage room (chilled room)
22a Cold air inlet 23 Cooling room 25 Cooling fan 28 Refrigerating room duct 29 Freezing room duct 30 Vegetable room duct 37 Refrigerating room damper 39 Refrigerating room damper part 40 Low greenhouse damper part 44 Chilled room container 45 Cold air return port (chilled side)
46 Cold air return passage (chilled side)
47 Chilled room door and handle 49 Temperature control heater 50 Ceiling plate member 52 Partial room container 53 Insulation material 54 Low greenhouse cold air passage 54a Cold air outlet 55 Cold air return port (partial side)
56 Cold air return passage (partial side)
57 Cold air confluence return port 58 Refrigerator room return duct 59 Refrigerator room temperature sensor 60 Low temperature storage room temperature sensor 61 Low greenhouse opening 65 Water storage tank 71 Flap 75 Vegetable room damper 80 Lighting device 81 Light guide plate 82 Light source unit 83 Light receiving surface 84 Light source Surface 85 Surface 86 Light source 87 Connector 88 Light source substrate 89 Cover member 90 Auxiliary cover member 91 Concave part 92 Concave case 93 Cover

Claims (7)

Refrigerator room and
A first storage chamber provided at the bottom of the refrigerator compartment and
The refrigerating chamber is provided with a second storage chamber provided above the first storage chamber.
On the ceiling surface of the first storage chamber, a cold air passage through which cold air flows and an outlet for supplying cold air flowing through the cold air passage to the first storage chamber are provided.
On the back surface of the second storage chamber, a cold air inlet for supplying cold air to the second storage chamber is provided .
A refrigerator characterized in that a heater is provided on the bottom surface of the second storage chamber . The refrigerator according to claim 1, wherein a heat insulating material is incorporated in the ceiling surface of the first storage chamber, and the cold air passage and the outlet are formed in the heat insulating material. The refrigerator according to claim 2, wherein the heat insulating material is styrofoam. Any of claims 1 to 3, wherein the cold air flowing through the refrigerating chamber duct is supplied to the cold air passage, and the cold air flowing through the refrigerating chamber duct is supplied from the cold air inlet to the second storage chamber. The refrigerator according to item 1 . The refrigerator according to any one of claims 1 to 4 , wherein the height of the first storage chamber is lower than the height of the second storage chamber. The first storage chamber and the water storage tank are provided side by side in the lower part of the refrigerating chamber.
The refrigerator according to any one of claims 1 to 5 , wherein the second storage chamber is provided above the first storage chamber and the water storage tank. According to claim 1, the second storage chamber is maintained at a temperature lower than that of the refrigerating chamber, and the first storage chamber is maintained at a temperature lower than that of the second storage chamber. The refrigerator according to any one of 6 .

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