JPH0456230B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a refrigerator that supplies cold air into a storage chamber to cool the interior of the storage chamber, and particularly relates to a refrigerator in which compartments are formed within the storage chamber.

(b) Prior Art Conventionally, this type of refrigerator has compartments that are cooled to various temperatures to accommodate the diversification of stored foods. Some methods of cooling the compartments directly introduce cold air, while others indirectly cool the interior through the walls of the compartments in order to prevent the stored food from drying out. In this type of indirect cooling system, cool air is allowed to flow along the top surface and left and right sides of the compartment, but when cold air is supplied to the top of the compartment, the cold air stagnates and reaches the top of the compartment. It has the disadvantage of generating frost.

(c) Problems to be solved by the invention In order to solve these drawbacks, for example, as in Japanese Utility Model Publication No. 45-23381, cool air is not supplied to the upper surface of the compartment, but cool air is distributed to the left and right from the rear surface. structure is considered. However, if cooling from the upper surface is stopped in this way, the cooling effect of indirect cooling is originally weaker than that of direct cooling, so insufficient cooling may inevitably occur in the section room.

(d) Means for Solving the Problems In order to solve the above problems, the present invention comprises a cold air passage 28 for distribution extending from side to side, with a discharge port 35 located in the center of the upper rear surface of the compartment. However, this passage 28 communicates with a cold air passage 30 on both sides of the compartment, and through holes 66 and 67 are formed in the sides of the passage 28 to communicate with the compartment.

(E) Effect According to the present invention, the compartment is indirectly cooled by the cold air passages on both sides, and cold air flows in through the through holes. Since this inflowing cold air has a speed to the left and right, it is a small amount and circulates along the inner side of the compartment, cooling the food stored therein so as to envelop it.

(f) Examples Examples will be explained with reference to the drawings. FIG. 6 shows a refrigerator 1 as an example. Reference numeral 2 denotes a heat insulating box that opens to the front, 3 a heat insulating partition wall that partitions the inside of the refrigerator, and a freezer compartment 4 is formed above the partition wall. Reference numeral 5 denotes a partition plate which is located at the lower part of the refrigerator interior and defines a vegetable compartment 7 below which is constituted by a container 6. The internal space between the partition wall 3 and the partition plate 5 is further divided into upper and lower sections by a heat-insulating partition plate 8, and the lower part thereof is a refrigerating chamber 9 which is cooled to a refrigerating temperature such as +3°C. Between the partition plate 8 and the partition wall 3, there is an ice greenhouse 12 as a compartment, which is constituted by a case 10 attached to the partition plate 8 and opened to the front and downward, the partition plate 8, and a transparent inner door 11. It is formed. A cooling chamber 13 is formed within the partition wall 3, and a cooler 14 included in the refrigeration cycle is housed therein. Ducts 15 and 16 are formed at the rear of the cooling chamber 13 to communicate therewith and extend vertically, and a blower 17 is also provided. Blower 1
7 is operated to transfer cold air from the cooler 14 to the duct 1
5 and 16 directions, from the duct 15 to the freezer compartment 4
Discharge into. The duct 16 discharges cold air from a discharge port 18 that opens in the back wall of the heat insulating box 2 at the rear of the case 10, and this discharge port 18 is controlled to open and close by a damper thermometer 19 that senses the temperature inside the refrigerator compartment 9. The partition plate 8 is located behind a front member 20 provided on the lower opening edge of the partition wall 3 from side to side. Further, 21, 22, 23 and 24 are insulating doors that can open and close the openings of the freezer compartment 4, the front of the ice room 10, the refrigerator compartment 9, and the vegetable compartment 7, respectively.

FIG. 1 shows an enlarged side sectional view of the ice chamber 12, and FIG. 2 shows a front sectional view thereof. Furthermore, FIG. 3 shows an exploded perspective view of the ice chamber 12. 25 is a damper thermo cover, which has a heat insulating material inside;
It is located between the case 10 and the back wall of the insulation box body 2,
It has a side discharge port 26 that allows the cold air flowing out from the discharge port 18 to flow directly into the refrigerator compartment 9, and a discharge port 35 that discharges the cold air forward. case 10
An L-shaped notch groove (hereinafter referred to as a groove) 27 is formed on the rear upper surface of the case 10, and an L-shaped notch groove (hereinafter referred to as a groove) 27 is formed in the groove 27 and is open upwardly and laterally to form a cold air passage 28 for distribution extending from side to side. A molded heat insulating material 29 is housed. As shown in FIG. 2, the left and right side surfaces of the case 10 are spaced apart from both sides of the inner surface of the insulating box body 2, and are connected to a cold air passage 2.
A cold air passage 30 communicating with the air passage 8 is configured. At this time, the opening edge and back surface of the case 10 are in contact with both sides of the lower surface of the partition wall 3 and the inner surface of the heat insulating box 2. Case 1
0 upper surface has a small distance between the partition walls 3, and has a projection 31 projecting upward in the center. An operating arm 32 is rotatably fixed to this protrusion 31, and a long hole 3 formed at the rear end of this arm 32
3, a damper plate 34 is rotatably engaged with the damper plate 34. The damper plate 34 is formed by integrally forming an opening/closing plate 40 located at the innermost part and a closing plate 41 located at the front thereof. Discharge port 35 of damper thermo cover 25
is opened at the center of the cold air passage 28, and the opening/closing plate 40 is located in the cold air passage 28 just in front of the discharge port 25. A knob 42 at the front end of the arm 32 is exposed on the back side of the inner door 11, and by operating this knob 42 from side to side, the cold air passage 28 is opened from the discharge port 35.
You can adjust the amount of cold air flowing inside. Furthermore, a rib 43 that protrudes upward is formed on the front edge of the groove 27 to prevent cold air from flowing into the upper surface of the case 10, but a notch 44 is formed for movement of the arm 32. Insulation material corresponding to 29
A cutout portion 29A is also formed in this portion. The closing plate 41 is located immediately in front of this notch 44. This blocking plate 4
1 is always in the notch 4 even if the arm 32 moves left and right.
Block 4. The blocking plate 41 and ribs 43 prevent cold air from flowing into the upper surface of the case 10.
This prevents the inconvenience of frost forming on the upper surface of the case 10 due to cold air remaining here. 45 is a cover that closes the upper opening of the molded heat insulating material 29.

4 and 5 show enlarged views of the side and front parts of the partition plate 8, respectively. 46 and 47 are the outer box and inner box that constitute the insulation box body 2, and 48 is the both boxes 4.
This is a heat insulating material filled between 6 and 47. Partition board 8
Both consist of an upper plate 50, a lower plate 51, and a molded heat insulating material 52 loaded between the two plates 50, 51, both of which are recessed on the inside than the edges. The heat insulating material 52 is provided along the upper surface of the lower plate 51, and is spaced from the upper plate 50 at least laterally. Further, the lower plate 51 has a plurality of through holes 53 closer to the center than the edge, and the heat insulating material 52
Also, a through hole 54 corresponding to the through hole 53 and communicating with the above-mentioned interval is provided. Furthermore, a plurality of through holes 55 are formed on both side edges of the upper plate 50. This through hole 5
5 communicates the cold air passage 30 with the space between the upper plate 50 and the heat insulating material 52, and these through holes 50,
A cold air passage 30 is formed inside the partition plate 8 by 54 and 53.
A cold air passage 56 is configured to communicate between the refrigerator compartment 9 and the refrigerator compartment 9. The case 10 is fixed to the upper edge of the sloped surface of the upper plate 50 inside the through hole 55, and the cold air passage 56 slopes inward from the through hole 55 and descends according to the shape of the slope part 8A around the partition plate 8. However, it is shaped to wrap around the lower surface of the upper plate 50.

The partition plate 8 assembled in this manner is installed substantially horizontally by engaging both side edges with grooves 57 formed on both side walls of the inner box 47 above the front member 20, but the central horizontal part is Since it is recessed from the edge, it is located at the rear of the front member 20. Therefore, the internal storage space behind the front member 20 can be used effectively, and the partition plate 8 is recessed and the case 10
As long as there is space above the arm 32 to accommodate the arm 32, the upper surface of the case 10 can be brought close to the lower surface of the partition wall 3 without forming a cold air passage, and the internal volume of the ice chamber 12 can also be expanded.

The front member 20 has a stepped portion 2 that is one step lower at the rear of the upper surface.
0A is formed, and the rear surface has one or more ribs 60 that protrude rearward. on the other hand,
One or more support walls 61 extending vertically corresponding to the ribs 60 are protruded from the front end of the lower plate 51 corresponding to the inclined portion 8A of the partition plate 8. By being mounted on top of the partition plate 8, the front part of the partition plate 8 is prevented from sagging due to the weight of the stored items or its own weight, and the front part 2
The distance between the rear surface or stepped portion 20A of the partition plate 8 and the inclined portion 8A of the partition plate 8 is maintained. At this time, the front edge of the upper plate 50 of the partition plate 8 extends to the upper part of the stepped part 20A of the front member 20, and covers it with a gap therebetween,
Furthermore, a plurality of through holes 62 are formed. Further, the door 22 and the inner door 11 have a gap between them, and the upper end communicates with the cooling chamber 13 through a suction hole 63 formed in the lower front part of the partition wall 3, and the lower end communicates with the refrigerator compartment 13 through a through hole 62.
A series of cold air return passages 64 are formed. Here, 65 is a cold air suction hole on the side of the freezer compartment 4.

Next, cold air circulation will be explained. The cold air blown out from the discharge port 35 of the damper thermo cover 25 flows into the cold air passage 28 and is temporarily transferred to the molded heat insulating material 29.
It collides with the front wall of the building and is distributed to the left and right. At this time, due to the presence of the molded heat insulating material 29, frost does not form on the outer surface of the groove 27 of the case 10. The cold air flowing from side to side in the cold air passage 28 is connected to the case 1 as shown by the arrow in FIG.
The cold air flows into the cold air passage 30 on the 0 side, descends, and enters the through hole 5.
5 and flows into the cold air passage 56. Due to the inclined shape of the passage 56, the cold air flowing into the cold air passage 56 does not immediately flow down through the through holes 53, 54 at the side ends, and most of the cold air is well guided toward the center. As a result, the inside of the ice room 12 is indirectly cooled from both sides of the case 10 and the upper plate 50 of the partition plate 8. Here case 1
By not circulating cold air over the top surface of the freezing chamber 12, prevention of frost formation on the top surface and expansion of the internal volume of the ice chamber 12 can be achieved, but the cooling effect may be insufficient. Therefore, through holes 66 are formed on both sides of the bottom wall of the molded heat insulating material 29 corresponding to the cold air passages 28, and corresponding through holes 67 are formed in the case 10 as well. As a result, a small amount of cold air in the cold air passage 28 is directly introduced into the ice room 12, which speeds up the cooling rate of the ice room 12 when the refrigerator 1 is installed, and eliminates insufficient cooling due to indirect cooling. Also, at this time, the cold air flowing in through the through holes 67 flows into the ice chamber 12 from both sides and has a speed to the left and right, so it flows forward along the inside of the side surface of the case 10, enveloping the stored food. It flows like. Furthermore, since the amount of cold air flowing in is small, drying of the stored food is suppressed to a minimum. Through such indirect and direct cooling, the inside of the icehouse 12 is kept cooled to the freezing storage temperature. Here, the freezing temperature storage temperature is a temperature range such as 0℃ to -2℃, which is below the freezing point but just before meat and vegetables freeze.By storing food at this freezing temperature storage temperature, it can be prevented from freezing. It suppresses the growth of bacteria inside and can be stored for a relatively long period of time (about a week in experiments).

The cold air flowing into the cooling passage 56 passes through the through holes 53 and 54.
After flowing down into the refrigerator compartment 9 and circulating with the cold air from the side outlet 26 inside the refrigerator compartment 9 and around the container 6 for heat exchange, the partition plate 8 flows as shown by the arrow in FIG.
The cold air passes through the space between the front member 20 and the inner door 11 , ascends along the outer surface of the inner door 11 , ascends the cold air return passage 64 , and returns to the cooling chamber 13 through the suction hole 63 . An upward air current is generated near the door 22 or 23 due to heat leakage from outside the refrigerator, and this cold air return operation is also smoothly achieved. In addition, since an upward air current is constantly generated in front of the inner door 11, the transparent inner door 11 does not become cloudy due to condensation, and the visibility inside the low-temperature ice room 12 is always maintained well. become.

Since the damper thermometer 19 senses the temperature of the refrigerator compartment 9, changing the set temperature of the refrigerator compartment 9 will also change the amount of cold air flowing into the cold air passage 28.
2, by moving the damper plate 34 from side to side and adjusting it appropriately, the temperature inside the ice room 12 can be maintained at a predetermined ice temperature storage temperature.

(G) Effects of the Invention As detailed above, according to the present invention, the cold air introduced into the distribution passage through the damper device is guided to the left and right cold air passages, and is then directed from the sides of the left and right side plates of the case to the bottom plate. The inside of the case can be cooled indirectly from below. Moreover, the cold air introduced into the distribution passage is guided while being insulated from the back plate of the case, so it can be guided to the cold air passage without touching the back plate, and by opening and closing the door, outside air can be drawn into the case. To provide a refrigerator which can prevent dew from forming on the case side surface of a back plate even if an intruder enters the room, and can cool and preserve articles in the case in a hygienic manner while avoiding the adverse effects of dew.

[Brief explanation of the drawing]

Each figure shows an embodiment of the present invention, and FIG. 1 is a side sectional view of the ice chamber, FIG. 2 is a front sectional view of the same, FIG. 3 is an exploded perspective view of the ice chamber components, and FIG. Figure 2 is an enlarged view of the main parts, Figure 5 is an enlarged view of the main parts of Figure 1, and Figure 6 is an enlarged view of the main parts of Figure 1.
The figure is a schematic cross-sectional view of the refrigerator. 9...Refrigerating room, 12...Ice greenhouse, 28,30...
...Cold air passage, 35...Discharge port, 66, 67...Through hole.

Claims (1)

[Claims] 1. A box consisting of an insulating top wall, left and right side walls, back wall, and bottom wall forming a storage room inside, a duct placed inside the box that leads air cooled by a cooler to the storage room, and a storage room. In a refrigerator equipped with a damper device that opens and closes a duct opening based on room temperature, the refrigerator has a compartment wall disposed inside the storage chamber to divide the storage chamber into upper and lower chambers, and at least a top plate and a back side plate. A front opening case is placed on the partition wall to form a series of cold air passages between the left and right side walls of the body and the partition wall, and is formed across the entire width in the part where the top plate and the back side plate of the case connect. 1. A refrigerator comprising: a groove; and an insulating passage disposed in the groove for distributing air that has passed through a damper device and guiding the air to the cold air passage.