JPH0481714B2 - - Google Patents

Description

[Detailed Description of the Invention] (a) Field of Industrial Application The present invention relates to a forced circulation type cooling storage in which a cooling unit having an upper air outlet and a lower suction port is disposed on one side of the storage. .

(b) Prior art As a prior art, Japanese Patent Application Laid-Open No. 62-206359 has a cooler and a blower fan, an air outlet at the top,
A refrigerator is disclosed in which a cooling unit having a suction port at the bottom is disposed inside the refrigerator, and the cold air that has been heat exchanged with the cooler is discharged into the refrigerator from the upper outlet by a fan, and is then discharged into the refrigerator. After cooling the inside, the cold air is sucked in from the lower suction port and heat exchanged again with the cooler, which repeats the cold circulation operation.

(C) Problems to be Solved by the Invention According to the cold air circulation operation of the prior art, the cold air discharged from the outlet is discharged only in one direction, that is, only in the lateral direction along the ceiling wall. As a result, the temperature in the lower part of the refrigerator, especially near the suction port, becomes higher than other parts of the refrigerator.In addition, when a load is placed inside the refrigerator, the temperature in the lower part of the refrigerator, especially near the suction port, increases. There was a problem that cooling performance deteriorated.

Furthermore, if the cold air circulation path is obstructed by a load near the ceiling wall, the load that is directly hit by the cold air becomes too cold, resulting in a problem that the cooling performance of the lower part of the refrigerator further deteriorates.

In view of the problems of the prior art, the present invention aims to equalize the temperature distribution throughout the refrigerator, and to prevent the discharged cold air from directly hitting the load, thereby preventing the load from becoming too cold. The purpose of this project is to provide a refrigerated storage facility.

(d) Means for Solving the Problems In order to achieve the above object, the present invention provides a cooling unit that is equipped with an opening/closing door on the front of the main body and has an upper air outlet and a lower suction opening on one side of the refrigerator. In a forced circulation cooling storage, a top cold air supply duct with one end inlet opening facing the air outlet is disposed along the ceiling wall of the refrigerator, and a rear cold air supply duct communicating with the top supply duct is arranged inside the refrigerator. Placed along the back wall,
This cooling storage has a plurality of cold air blowing slits formed on the other side of the upper supply duct facing the other side of the refrigerator, on the front surface of the upper supply duct facing the opening/closing door, and on the lower surface of the rear supply duct.

In addition, the present invention provides a front opening of the main body with a column that extends vertically, a door that opens left and right with the front surface of the column as a contact surface, and a plurality of shelves on the left and right sides of the column as a boundary inside the refrigerator. In a forced circulation type cooling storage, which is equipped with a cooling unit having an upper air outlet and a lower air inlet on one side of the storage, an upper cold air supply duct with an inlet opening at one end facing the air outlet is connected to the storage. Disposed along the inner ceiling wall, the upper cold air supply duct has a side surface facing the other side of the refrigerator, a front surface facing the opening/closing door, and a bottom surface facing the boundary between the left and right shelves. This is a cooling storage that is formed with a plurality of cold air blowing slits.

(e) Effect According to the above configuration, as shown in FIG. 3, the discharged cold air blown out from the outlet 11 enters the top cold air supply duct 18, a part of it enters the back cold air supply duct 23, Each blowout slit 20, 21 and 2
5 and is discharged into the refrigerator interior 5. Among these, the cold air discharged from the blow-off slit 20 on the front surface of the upper surface supply duct 18 flows downward from the top wall 5B along the inner surface of the door 4, and the cold air discharged from the blow-off slit 21 on the side surface flows from the weather 5B to the side wall 5C. The cool air flows downward along the back wall 5D and is further discharged from the blowout slit 25 formed on the lower surface of the back supply duct 23.
flows downward along. As a result, the interior 5 of the refrigerator is surrounded by cold air, and there is no difference in temperature between the various parts of the interior 5.

Further, as shown in FIG. 7, the cold air blown out from the air outlet 11 enters the upper cold air supply duct 27, and then is discharged into the refrigerator interior 5 from each of the air slits 29, 30, and 32. Among these, the cold air discharged from the blow-off slit 29 on the front side of the upper surface supply duct 27 flows downward from the top wall 5B along the inner surface of the door 4, and the cold air discharged from the blow-off slit 30 on the side surface flows from the top wall 5B to the side wall. Flows downward along 5C,
Furthermore, the cold air discharged from the blow-off slit 32 on the bottom flows downward toward the boundary portion 31 between the left and right shelves 6A and 6B. As a result, the temperature difference between each part of the refrigerator 5 is eliminated.

Moreover, according to the cold air discharging method of the present invention, it is possible to prevent the cold air from directly hitting the load inside the container 7 placed on the left and right shelves 6A, 6B.

(f) Examples Examples of the present invention will be described below with reference to the drawings.

In Figures 1 to 5, numeral 1 in the figure is an under-counter type cooling storage used in the kitchen of a restaurant, etc. The front opening of the main body 2, which has an insulating structure, has a column 3 that divides the opening into left and right parts. It is provided vertically, and the left and right openings are closed off in a freely openable and closable manner by heat insulating doors 4, 4 which rotate left and right using the front surface of the support column 3 as a contact surface. In addition, in the refrigerator (5), multiple shelves 6A and 6B are vertically arranged on the left and right sides of the pillar 3, and on top of these shelves 6A and 6B, loads such as vegetables and fruits are stored. A container 7 is placed such that it can be taken in and out from the front opening of the main body 2.

Further, a cooling unit 8 is disposed on one side of the refrigerator interior 5, and the unit 8 includes a plate fin type cooler 9, a cold air circulation fan 10 disposed above the cooler 9, and a cooling unit 8 for cooling these coolers. It houses a container 9 and a fan 10, has a cold air outlet 11 with a louver on the upper part, and a return cold air suction opening 12 with a lower louver.
It is mainly composed of a cover 13 made of resin.

On the other hand, a machine room 14 adjacent to the interior 5 and partitioned on the side of the main body 2 includes an electric compressor 15 and a condenser 1.
6, a cooling fan 17, etc. are housed therein, and these are connected to the cooler 9 by a pipe that passes through the left side wall 5A of the refrigerator on the side where the cooling unit 8 is disposed, thereby forming a refrigeration system.

Next, the duct configuration of the present invention for making the temperature distribution inside the refrigerator uniform will be explained. An upper cool air supply duct 18 is disposed in the upper part of the refrigerator interior 5 along the interior ceiling wall 5B. The upper surface supply duct 18 has an opening 19 at one end facing the air outlet 11 of the cooling unit 8, and has a large number of front air outlet slits 20 formed at appropriate intervals over substantially the entire width in the longitudinal direction of the front surface 18A facing the door 4. A large number of lateral blow-off slits 21 are also formed at appropriate intervals on the other side surface 18B opposite to the right side wall 5C of the refrigerator interior over substantially the entire width in the longitudinal direction. Further, a wind direction plate 22 is disposed within the duct 18 to actively guide a portion of the cold air toward the front surface 18A. On the other hand, a back cool air supply duct 23 is disposed at the rear of the refrigerator interior 5 along the interior back wall 5D. The back duct 23 has an opening 24 at its upper end and communicates with the upper duct 18 in order for some of the cold air that has entered through the opening 19 at one end of the upper duct 18 to enter therein, and its lower end extends to approximately the middle of the interior 5 of the refrigerator. are doing. And the rear duct 2 facing the internal bottom wall 5E
A large number of lower blowout slits 25 are formed at appropriate intervals on the lower surface 23A of 3, and an appropriate number of adjustment blowout slits are formed at the lower part of the side surface 23B facing the right side wall 5C of the refrigerator. 26 is formed.

Next, the cooling circulation operation will be explained based on the above configuration. First, the cold air that has undergone heat exchange in the cooler 9 is discharged from the outlet 11 by the circulation fan 10, and this discharged cold air enters the duct 18 through the opening 19 at one end of the upper surface duct 18. this house,
The cold air guided in the direction of the front surface 18A by the action of the wind direction plate 22 is discharged from the front blowing slit 20 into the refrigerator interior 5, and this discharged cold air flows along the ceiling wall 5B and further downward along the inner surface 4A of the door 4. flows. Further, the cold air that has gone straight in the direction of the other side surface 18B is discharged from the side blow-off slit 21 into the refrigerator interior 5, and this discharged cold air flows downward along the ceiling wall 5B and further along the right side wall 5C. Further, the cold air that has entered the back duct 23 is discharged into the refrigerator interior 5 from a lower blowing slit 25 formed on the lower surface 23A of the duct 23, and this discharged cold air flows downward along the back wall 5D.

This flow of cold air that wraps around the inside of the refrigerator 5 eliminates the temperature difference between the back and front of the refrigerator, and
Since the discharged cold air travels through the right side wall 5C, the back wall 5D, and the inner surface 4A of the door 4 and reliably descends to the lower part of the refrigerator interior 5, the cold air does not directly hit the load, preventing the load from becoming too cold, and the suction port The lower part of the refrigerator interior 5 including the vicinity of 12 is also cooled in the same way as the upper part of the refrigerator interior 5, the temperature difference between the upper and lower parts of the refrigerator interior 5 is reduced, and the temperature distribution in the refrigerator can be made uniform.

The discharged cold air that has exchanged heat with the loads stored in the containers 7 on the shelves 6A and 6B flows along the bottom wall 5E in the direction of the cooling unit 8, is sucked from the suction port 12, and is returned to the cooler. The cold air circulation operation in which heat is exchanged in step 9 is repeated.

Next, the upper surface cold air supply duct 27 shown in FIGS.
8, and a large number of front blowout slits 29 are provided at appropriate intervals over substantially the entire width in the longitudinal direction of the front surface 27A facing the door 4.
The other side surface 27 facing the right side wall 5C of the refrigerator
B also has a large number of lateral blow-off slits 30 formed at appropriate intervals over substantially its entire width in the longitudinal direction. Furthermore,
The bottom surface of the upper surface duct 27 facing the boundary portion 31 between the left and right shelves 6A and 6B is designed to prevent cold air from directly hitting the loads housed in the containers 7 placed on the left and right shelves 6A and 6B. 27C, there are an appropriate number of lower blowout slits 32 in the front, back, left and right directions.
is formed.

To explain the cold air circulation operation of such a configuration, the cold air that has undergone heat exchange in the cooler 9 is discharged from the outlet 11 by the circulation fan 10, and this discharged cold air is passed through the opening 28 at one end of the upper surface duct 27 into the duct 27. go inside. Among these, the cold air guided in the direction of the front surface 27A by the action of the wind direction plate 22 is discharged from the front blowing slit 29 into the refrigerator interior 5, and this discharged cold air flows along the ceiling wall 5B and further along the inner surface 4A of the door 4. It flows downward. In addition, the cold air that has gone straight in the direction of the other side surface 27B is discharged from the side blowout slit 30 into the refrigerator interior 5, and this discharged cold air runs along the ceiling wall 5B.
It further flows downward along the right side wall 5C. Furthermore, the cold air discharged into the refrigerator interior 5 from the lower blowing slit 32 formed on the bottom surface 27C of the duct 27 is transferred to the left and right shelves 6A.
The liquid flows downward through the boundary portion 31 between the shelves 6A and 6B without directly hitting the load in the container 7 placed on the shelves 6A and 6B.

Such a flow of discharged cold air can particularly favorably cool the load housed in the container 7 placed on the left shelf 6A, which cannot be sufficiently cooled by only the discharged cold air from the side blowout slit 30. Moreover, since the discharged cold air travels through the right side wall 5C and the inner surface 4A of the door 4, and then passes through the boundary 31 between the shelves 6A and 6B and reliably descends to the lower part of the chamber 5, the cold air does not directly hit the load. Not only can the lower part of the refrigerator 5 including the vicinity of the suction port 12 be cooled in the same way as the upper part of the refrigerator 5, the temperature difference between the upper and lower parts of the refrigerator 5 can be reduced, and the temperature distribution in the refrigerator can be improved. It can be made uniform.

(G) Effects of the Invention As described above, the present invention reduces the temperature difference between the upper and lower parts of the refrigerator and/or the temperature difference between the back and front of the refrigerator, making it possible to make the temperature distribution in each part of the refrigerator substantially uniform. .

The present invention can reduce the temperature difference between the lower part of the refrigerator, including the vicinity of the suction port, and the upper part of the refrigerator. In particular, the load near the suction port, which tends to be insufficiently cooled, can be cooled as well as other loads.

In the present invention, the cold air discharged from each blow-off slit descends along the wall surface and the inner surface of the door, or through the boundary between the left and right shelves where no containers are placed, so that the cold air is directly applied to the load. It is possible to reliably prevent the load from getting too cold without being hit.

[Brief explanation of the drawing]

Fig. 1 is a vertical front view of the cooling storage, Fig. 2 is a longitudinal side view, Fig. 3 is a front perspective view of the main part of the storage, Fig. 4 is a cross-sectional plan view, and Fig. 5 is a partial view. A broken front view, FIG. 6 is a longitudinal sectional front view, and FIG. 7 is a front perspective view of the main part inside the refrigerator. 4...door, 4A...inner surface, 5...interior, 6A, 6B...
Shelf, 11...Blowout port, 12...Suction port, 18, 27...
Top cold air supply duct, 19, 28...one end open, 2
0, 29... Front blowout slit, 21, 30... Side blowout slit, 23... Rear cold air supply duct, 25, 3
2... Lower blowout slit, 31... Boundary part.

Claims (1)

[Scope of Claims] 1. A forced circulation type cooling storage which is equipped with an opening/closing door on the front side of the main body and a cooling unit having an upper air outlet and a lower suction port on one side of the storage, in which an inlet opening at one end is provided. A top cool air supply duct facing the outlet is disposed along the ceiling wall of the refrigerator, a back cold air supply duct communicating with the top supply duct is disposed along the back wall of the refrigerator, and the other side of the refrigerator A cooling storage, characterized in that a plurality of cold air blowing slits are formed on the other side of the opposing upper surface supply duct, on the front surface of the upper surface supply duct facing the opening/closing door, and on the lower surface of the rear surface supply duct, respectively. 2 A pillar extending vertically is provided in the front opening of the main body, and a door that opens left and right is provided with the front surface of the pillar as a contact surface, and multiple shelves are arranged inside the refrigerator on the left and right with the pillar as a boundary, and the storage In a forced circulation cooling storage which is equipped with a cooling unit having an upper air outlet and a lower air inlet on one inner side, an upper cold air supply duct whose one end inlet opening faces the air outlet is run along the ceiling wall inside the storage. The upper cold air supply duct has a plurality of cold air blowing slits on the other side facing the other side of the refrigerator, on the front facing the opening/closing door, and on the bottom facing the boundary between the left and right shelves. A cooling storage characterized by forming.