JPS63129282A - Freezing refrigerator - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] (a) Industrial Application Field The present invention has a method of dividing the interior of the refrigerator into two left and right chambers by a partition wall.
One side is a freezer compartment equipped with a cooling unit, and the other is a refrigerator compartment. An upper and lower communication passages are formed above and below the partition wall to communicate the two chambers, and the cold air exchanged with the cooler is The present invention relates to a refrigerator-freezer that includes a cold air circulation system that circulates cold air to a freezer compartment and a refrigerator compartment using a cold air circulation fan.

(0) Prior art As a conventional refrigerator-freezer of this type, for example,
No. 51180 discloses that a partition wall is provided inside the refrigerator to partition a freezer compartment and a refrigerator compartment on the left and right, and a cooler, a fan for the freezer compartment, and a cooler cover are provided on the back of the freezer compartment. A cooling chamber is formed with the upper part serving as a discharge port and the lower part serving as a suction port, and a side channel cover is provided along the side of the freezer compartment of the partition wall, so that the heat exchanged by the cooler is blown into the freezer compartment, and the freezer compartment is a discharge duct forming a side passage through which a part of the cold air passing through passes in the vertical direction, and guiding a part of the cold air passing through the side passage to the refrigerator compartment with the opening on the refrigerator compartment side positioned higher than the opening on the freezer compartment side; A suction duct located at the lower part of the duct and guiding cold air from the refrigerator compartment to the freezer compartment with the opening on the refrigerator compartment side positioned higher than the opening on the freezer compartment side is formed on the partition wall, and on the refrigerator compartment side of the discharge duct, A refrigerator is disclosed which is characterized by being provided with a refrigerator compartment fan operated by a refrigerator compartment thermostat and a fan case surrounding the fan.

(c) Problems to be Solved by the Invention This conventional refrigerator has a problem in that the cold air returned from the suction duct is diffused into the freezer compartment and mixed with the cold air in the freezer compartment, causing temperature unevenness in the freezer compartment. there were.

In addition, because the relationship between the discharge port and the discharge duct and the relationship between the suction port and the suction duct are both located at right angles, the circulation of cold air to the refrigerator compartment cannot be performed stably, especially if a refrigerator compartment fan is not installed. This caused problems such as almost no cold air being supplied to the refrigerator compartment.

(d) Means for Solving the Problems In order to solve the problems of the above-mentioned prior art, the present invention divides the inside of 1 into two left and right chambers by a partition wall, one of which is a freezing chamber equipped with a cooling unit. The other side is used as a refrigerator,
An upper communication passage and a lower communication passage are formed at the top and bottom of the partition wall to communicate the two chambers, and a cold air circulation system is installed in which the cold air that has been heat exchanged by the cooler of the cooling unit is circulated to the freezer and refrigerator compartments by a cold air circulation fan. In the refrigerator-freezer configured, the cooling unit includes the cooler and the cold air circulation fan housed in a case whose front opening is covered by a removable front cover having an upper discharge port and a lower suction port,
Disposed on the side wall of the freezer compartment facing the partition wall, and between the discharge port and the upper communication path, one end opening faces a part of the discharge port with a small distance therebetween, and the other end opening faces the discharge port with a small distance therebetween. A cold air supply duct is provided that communicates with the upper communication passage, and between the suction port and the lower communication passage, one end opening communicates with the lower communication passage, and the other end opening communicates with a part of the suction port at a small distance. This is a refrigerator-freezer that has return ducts facing each other.

(E) Function The present invention has the advantage that since the cooling unit (10) is disposed on the side wall (4A) of the freezer compartment (4) facing the partition wall (3), the discharge port (13) and the upper communication path (8 ) and suction port (14
) and the lower communication passage (9) face each other, and the supplied cold air is stably supplied to the refrigerator compartment (5) via the supply duct (22) arranged between the discharge port (13) and the upper communication passage (8). The returned cold air is directed to the suction port (14) through the return duct (24) disposed between the suction port (14) and the lower communication passage (9) without being completely diffused into the freezer compartment (4). .

Also, the distance between the discharge port (13) and the inlet opening (22A) of the supply duct (22) and the distance between the suction port (14) and the return duct (
Due to the spacing between the outlet openings (24B) of 24), the front cover (15) removed from the case (16) can be easily taken out of the refrigerator, making maintenance service of the cooling unit (10) easy. becomes.

(to) Example The following is a detailed explanation of the present invention based on the drawings.
1) is an under-counter refrigerator-freezer used in the kitchens of restaurants, etc. The interior of the main body (2), which has an insulating structure, is divided into two rooms, left and right, by a partition wall (3), which has an insulating structure and can be inserted through the front opening. , one side is used as a freezer compartment (4), and the other side is used as a refrigerator compartment (5). This freezer compartment (4
) and the front openings of the refrigerator compartment (5) can be opened and closed by the freezer compartment door (6) and the refrigerator compartment layer (7), respectively, and both compartments ( 4) , (5
), forming an upper communicating path (8) and a lower communicating path (9). In addition, the freezer compartment facing the partition wall (3) (
A cooling unit (10) can be installed along the side wall (4A) of 4).

The cooling unit (10), as shown in FIG. 11) and a fan (12), a louvered cold air outlet (13) is formed in the upper part, and a louvered cold air inlet (14) is formed in the lower part.
It mainly consists of a resin case (16) whose front opening is covered with <- (15).

On the other hand, the machine room (17) is divided adjacent to the freezer room (4).
) houses an electric compressor (18) and a condenser (19), which are connected to a through passage (20) formed in the side wall (4A) of the freezer compartment (4) in which the cooling unit (10) is arranged. It is connected to a cooler (11) via a refrigerant pipe (21) to constitute a refrigeration system.

In such a configuration, the upper communication passage (8) formed in the cold air outlet (13) of the cooling unit (10) and the partition wall (3)
) A cold air supply duct ) (22) is installed between the cold air suction port (14) of the cooling unit l-(10) and the partition wall (
A unitized return duct structure (23) is disposed between the lower communication passages (9) formed in 3).

Furthermore, on the refrigerator compartment (5) side of the partition wall (3), there is a refrigerator compartment (
5) is provided with an opening/closing device (31) such as a damper/thermostat that opens and closes the upper communication path (8) based on the temperature.

Specifically, the supply duct (22) has an upper surface defined by the ceiling wall (4B) of the freezing compartment (4), and
By screwing into the inlet opening <22A), the outlet opening (
The distance between part of 13) and the small allowance, i.e. the case (16)
An outlet opening (22B) is disposed in communication with the upper communication passageway (8), facing each other with an interval that allows the cover (15) removed from the opening to be pulled forward.

Further, the detailed structure of the return duct structure (23) will be explained based on FIGS. 5 and 6. (24) has both ends open (
24A>, (24B) L, is a hollow return duct made of metal such as aluminum, and this duct (24
) is arranged around the duct heater (26) attached to a thin plate (25) such as aluminum foil, and the periphery of the heater (26) is covered with a heat insulating material (27) such as foamed polyethylene. (24) has a support plate (28) inside.
A return air heater (29) is installed. This support plate (28) is made of a material with good thermal conductivity such as aluminum, and has an inverted ■ shape with a pair of pressing pieces (28A) and (28A) whose lower ends are bent outward. 24) When inserted inside, the suppressing piece (28A) expands due to its elastic action and presses the inner surface of the duct (24), and is held within the duct (24). These members are housed in a duct cover (30) that is open at both ends and on the negative side in the longitudinal direction and covered with a heat insulating material (27).

Return duct structure unitized as above (23)
is attached to the rear wall of the freezer compartment (4) by screws (32), thereby opening the inlet opening (24) of the return duct (24).
24A) is in communication with the lower communication passage (9), and the outlet opening (24B> is located at a small distance from a part of the cold air intake port (14), i.e., it is removed from the case (16) in the same way as the above-mentioned interval. They are positioned facing each other with a gap that allows the removed cover (15) to be pulled forward.

Next, the operation of the present invention will be explained. The cold air that has undergone heat exchange in the cooler (11) is blown out from the discharge port (13) by the circulation fan (12), and is forcedly circulated to the freezer compartment (4) to cool the freezer compartment (4) to about -25°C. On the other hand, a part of the cold air passes through the supply duct (22) and is completely supplied to the refrigerator compartment (5) from the upper communication passage (8), and the refrigerator compartment (5) is heated to 5°C by the action of the opening/closing device (31). Cool to a certain degree.

Therefore, the return cold air from the refrigerator compartment (5) is passed through the lower communication passage (9).
) into the inlet opening (24A) of the return duct (24), and through the return duct (24) to its outlet opening (24B).
The cold air flows out from the refrigerator, is sucked in through the suction port (14) without being completely diffused into the freezer compartment (4), and is heat exchanged again in the cooler (11), repeating the cold air circulation operation.

In addition, as shown by the dashed line (X) in Fig. 1, the case (
The cover (15) that has been completely removed from the discharge port (13)
) and the inlet opening (22A) of the supply duct (22) and the distance between the suction inlet (14) and the outlet opening (22A) of the return duct (24).
24B), it can be pulled forward and removed from the vehicle, making it easy to perform maintenance services on the cooler (11), cold air circulation fan (12), etc.

(G) Effects of the Invention As described above, the present invention provides an upper communication path and a cooling unit formed between the discharge port of the cooling unit and the partition wall by arranging the cooling unit on the side wall of the freezer compartment facing the partition wall. The suction port and the lower communication path formed in the partition wall can be positioned in a facing relationship, respectively, and further, between the discharge port and the upper communication path, the inlet opening faces the discharge port and the outlet opening faces the upper communication path. By arranging a supply duct communicating with the air inlet and a return duct between the suction inlet and the lower communication passage, the inlet opening communicating with the lower communication passage and the outlet opening facing the suction inlet, cooling air circulation is improved. In addition, it is possible to stably supply cold air to the refrigerator compartment using only a cold air circulation fan, and it is extremely effective in preventing the return cold air from dispersing into the freezer compartment and preventing temperature fluctuations in the freezer compartment. It offers many advantages.

In addition, due to the positional relationship between the discharge port and the inlet opening of the supply duct, and the suction port and the outlet opening of the return duct, the cover that has been completely removed from the case can be easily pulled out of the refrigerator.
If it is a simple problem with the cooler or cold air circulation fan,
This can be easily dealt with, and maintenance serviceability can also be improved.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional front view of the refrigerator-freezer of the present invention, Fig. 2 is an exploded perspective view of the cooling unit, Fig. 3 is a partially cutaway and disassembled front perspective view, and Fig. 4 is Fig. 3. FIG. 5 is an exploded perspective view of the duct structure of the present invention.
FIG. 6 is a sectional view taken along the line AA in FIG. 1. (3)...Partition wall, (4)...Freezing room, (4
A)...Side wall, (5)...Refrigerating room, (8)...
・Upper communication path, (9)...Lower communication path, (Good)・
... Cooling unit, (11) ... Cooler, (1
2)...cold air circulation fan, (13)...discharge port,
(14)...Suction "1, (15)...Front cover, (16)...Case, <22>...Supply duct, (22A)...Inlet opening, (22B>...・
Outlet opening, (24)...Return duct, (24A
)...Inlet opening, (24B)...Outlet opening. Applicant Sanyo Electric Co., Ltd. and one other agent Patent attorney Takuji Nishino and one other person Figure 2 Figure 3 Figure 5 Figure 6121

Claims (1)

[Claims] 1. The interior of the refrigerator is divided into two left and right compartments by a partition wall, one is a freezer compartment with a cooling unit installed, and the other is a refrigerator compartment. Above and below the partition wall, there is an upper communication passage and a lower communication passage that communicate the two chambers. In a refrigerator-freezer, which has a cold air circulation system that circulates cold air heat-exchanged by the cooler of the cooling unit to the freezer compartment and the refrigerator compartment by a cold air circulation fan, the removable unit has an upper discharge port and a lower suction port. The cooling unit, which houses the cooler and the cold air circulation fan in a case whose front opening is covered with a flexible front cover, is disposed on the side wall of the freezer compartment facing the partition wall, and is connected to the discharge port. A cold air supply duct is disposed between the upper communication passage, and the opening at one end faces a part of the discharge port with a small distance therebetween, and the opening at the other end communicates with the upper communication passage. A refrigerator-freezer characterized in that a return duct is disposed between the lower communication passages, the opening at one end communicating with the lower communication passage, and the opening at the other end facing a part of the suction port with a small distance therebetween. .