JP2614564B2 - Cooling storage - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refrigerator for cooling and storing fresh foods in a high humidity state.

[0002]

2. Description of the Related Art When preserving fresh food such as meat, fresh fish or vegetables, it is necessary to avoid drying and store it in a high humidity and cool condition. A heat-conducting storage box is installed inside the heat-insulating box at intervals, and this space is used as a duct. A cooling device is provided in the duct to circulate cool air through the duct, and the inside of the storage box The cooling storage of the structure which cools indirectly is comprised.

According to this structure, since no cool air directly enters the storage box, the inside of the storage box is not dehumidified, and the inside of the storage box is kept at a high humidity due to moisture evaporated from food or moisture entered from outside. , Thereby preventing the food from drying out,
It can be stored in a high humidity state and cooled. As described above, since the inside of the storage box is in a highly humid state, frost and dew condensation are generated on the inner wall surface of the storage box. If the water falls on the food, the quality deteriorates rather. Therefore, conventionally, as shown in the above-mentioned publication, a drain pipe extending from the bottom of the storage box to the outside is provided, and the water is discharged from the drain pipe.

FIG. 4 shows a conventional high-humidity cooling storage 100 of this kind.
FIG. A heat-conductive storage box 102 is housed in the heat-insulating box 101 at intervals, and a cooler and a blower (not shown) are installed in the duct 103 as a duct 103 within the space. The cooled cold air is forcedly circulated through the duct 103, and the storage room 104 is indirectly cooled from the wall surface of the storage box 102. A drain hole 105 is formed in the bottom wall 102A of the storage box 102.
05 is connected to the internal drain socket 106. The internal drain socket 106 is opened at the drain hole 105, penetrates through the duct 103, and passes through the through hole 1 of the heat insulating box 101.
07. An outer drain socket 108 is inserted into and fixed to the through hole 107 of the heat insulating box 101 from the outside of the warehouse. The inner drain socket is connected to the outer drain drain 108 in the through hole 107. Further, the storage outside drain socket 108 is connected to a drain hose 110 provided outside the storage and having a trap portion 109.

[0005] Tren water 111 such as thawing water and dew attached to the inner wall surface of the storage box 102 is discharged from the drain hole 10 of the bottom wall 102A.
The fluid flows into the inside drain socket 106 from the two portions, flows from the outside drain socket 108 to the drain hose 110, and is discharged. Drain water 111 accumulates in the trap section 109 to prevent communication between the outside and the storage chamber 104.

[0006]

As described above, the drain water from the inside of the storage room 104 for storing food is conventionally discharged. However, since the storage box 102 is usually configured by welding or screwing a steel plate,
Even if the seal at the joint is strict, there is a risk that moisture will enter the duct 103. Conventionally, since there was no drainage means from the inside of the duct 103, the water accumulates in the duct 103, freezes and grows there, hinders the circulation of cool air in the duct 103, and causes poor cooling in the storage room 104. However, there is also a problem that the moisture causes corrosion of the bottom surface of the heat insulating box 101.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a cooling storage which can prevent poor cooling and corrosion caused by moisture entering a duct around a storage box.

[0008]

SUMMARY OF THE INVENTION The cooling storage of the present invention comprises:
A thermally conductive storage box is provided at a predetermined interval in the heat insulating box body, and the interval is set as a duct to circulate cool air in the duct, and is opened at the bottom of the storage box. A storage box drain connected to an external drain hose, a trap formed in a drain path formed by the storage box drain and the drain hose, and a duct communicating between the inside of the duct and the drain hose downstream of the trap. And a drainage section.

[0009]

In the cooling storage according to the present invention, the storage box is cooled by the cool air circulating in the duct, and the food stored in the storage box is indirectly cooled from the storage box wall surface. Drain water generated inside the storage box is discharged from the storage box drainage section to a drain hose. Drain water generated in the duct is discharged from the duct drain to a drain hose. At this time, a trap portion exists between the storage box drainage section and the duct drainage section, and the inside of the storage box and the duct and the outside of the cooling storage are not communicated.

[0010]

Next, an embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 is an enlarged vertical sectional view of the drainage passage 33 at the bottom of the cooling storage 1 of the present invention, FIG. 2 is a front view of the cooling storage 1, and FIG.
Shows longitudinal sectional views of the cooling storage 1 respectively. FIG.
In FIG. 3 and FIG. 3, the cooling storage 1 is configured by storing and disposing a thermally conductive storage box 3 at a predetermined interval inside a main body of a heat insulating box 2 having an opening on the front surface. The storage box 3 is formed by screwing a heat conductive plate such as a steel plate and sealing the joint surface with a sealing material. The inside of the storage box 3 is vertically divided by a partition portion 4 and the upper storage room is upward. 5, a lower storage room 6 is formed below. The space between the storage box 3 and the heat insulating box 2 and the inside of the partition 4 are formed as a series of ducts 8 as a cool air passage, and this duct 8 is divided into a discharge duct 8A and a return duct 8B by a dividing plate 9. ing.

A column 10 extending up and down is attached to the front opening of the heat-insulating box 2, and the opening is further divided vertically in front of the partition part 4. The front openings of the upper and lower storage chambers 5 and 6 are partitioned by these. It is closed openably and closably by a pair of upper and lower insulated doors 11, 11 and 12, 12, respectively. Top wall 2 of heat insulation box 2
A is provided with a rectangular window hole 14.
The mounting base 15 is attached so as to close the panel from above. A compressor 17, a condenser 18, and a condenser fan 19 constituting a refrigeration unit 16 are provided on the upper surface of the mounting base 15.
The front of these is concealed by a grill 21 provided with a control panel 20 and the like. A cooler 22 constituting the refrigeration unit 16 is attached to the lower surface of the mounting base 15 and faces the duct 8 above the storage box 3. The fan 22 is formed on a fan cover (not shown) formed in a drain pan 23 below the cooler 22. Correspondingly, a cooling fan 24 is mounted in the duct 8 in front of the cooler 22.

When the cooling fan 24 is operated, the cooling device 2
The cool air cooled in 2 is blown out to the discharge side duct 8A of the duct 8 as shown by the arrow in FIG. 3, flows down from the upper surface of the storage box 3 to the back, flows into the partition 4, and then makes a U-turn to form a lower back. To the return side duct 8
B, and circulates up the return duct 8B and returns to the suction side of the cooler 22. The walls of the storage box 3 are cooled by the cool air circulation, and the storage boxes 3 and
Cooled indirectly from the wall of

On the other hand, an outside air introduction duct 26 communicating with the outside is formed in the support column 10 at a communication portion 25 at the front end of the top wall 2A of the heat insulating box 2. The outside air introduction duct 26 communicates with the inside of the upper and lower storage chambers 5 and 6 at the outlets 27 and 28, respectively.
6, the structure is introduced as indicated by an arrow in the figure. As described above, the upper and lower storage chambers 5 and 6 receive indirect cooling from the wall surface of the storage box 3 and the outside air containing a large amount of water is introduced from the outside air introduction duct 26, so that the inside thereof is, for example, −.
Cooling is maintained at a high humidity of 80% to 90% within a range of 5 ° C. to + 13 ° C.

The upper surface of the storage box 3 is inclined backward and low, and a dew receiving plate 30 inclined along this inclination is disposed in the upper storage chamber 5. In addition, a dew receiving plate 31 that is inclined rearward and low is disposed also in the upper part of the lower storage room 6,
A communication pipe 32 communicating with the upper and lower storage chambers 5 and 6 and opening above the dew receiving plate 31 is attached to the partition 4. Furthermore,
The storage box 3 at the bottom of the lower storage room 6 is provided with a drain passage 33 for discharging drain water.

In FIG. 1, a heat insulating box 2 is formed by connecting the opening edges of an outer case 35 and an inner case 36 made of steel plate opened to the front by a heat insulating breaker 38 made of synthetic resin. Is filled with a heat insulating material 37 such as foamed polyurethane. A drain hole 4 is provided in the bottom wall 3A of the storage box 3.
A drain socket 41 is connected to the drain hole 40. A through-hole 42 is formed in the heat-insulating box 2 below the drain hole 40 so as to open into the duct 8 and penetrate therethrough. A drain socket 43 outside the warehouse is attached to the through hole 42 from the outside of the warehouse. . The outside drain socket 43 has a trap portion 44 located below the through hole 42, a hose connecting portion 45 protruding to the side of the trap portion 44, and a connecting portion 46 extending above the trap portion 44. The connecting portion 46 is inserted into the through hole 42 from the outside of the refrigerator, and is screwed and connected to the outer surface of the funnel-shaped pipe 47 attached from the inner box 36 side along the wall surface of the through hole 42. The outside drain socket 43 communicates with the duct 8 via the funnel-shaped pipe 47, and the funnel-shaped pipe 47 and the outside drain socket 43 constitute a duct drainage part.

The internal drain socket 41 is provided with a drain hole 4
It opens at 0, extends downward, passes through the duct 8, and enters the funnel-shaped pipe 47 of the through hole 42 of the heat-insulating box 2 at an interval from the inner wall surface thereof. It reaches the inside of the trap portion 44 slightly above the bottom wall of the drain socket 43.
The storage box drainage portion is constituted by the storage inside drain socket 41 and the storage outside drain socket 43. A drain hose 5 is connected to the hose connection part 45 of the outside drain socket 43.
0 is connected, and the drain passage 33 is constituted by the inside drain socket 41, the outside drain socket 43 and the drain hose 50. An open-cell sealing material 52 such as maltprene is adhered to an opening of the through hole 42 outside the inside drain socket 41 on the inner box 36 side, and the through hole 42 is closed.

The operation of draining drain water by the drain passage 33 with the above configuration will be described. Since the upper and lower storage chambers 5 and 6 are maintained at a high humidity as described above, frost and dew grow on the inner wall surfaces. In the upper storage room 5, these drain waters flow from the dew receiving plate 30 along the inner surface of the rear wall of the storage box 3 to flow into the communication pipe 32, fall into the dew receiving plate 31 of the lower storage room 6, and fall into the lower storage room 6. Merges with drain water, and runs down the inside of the storage box 3 rear wall to drain holes 4
Reaches 0. The drain water that has reached the drain hole 40 flows into the inside drain socket 41 and goes to the outside drain socket 43.
(The stored water is stored in a trap portion 44 in FIG. 1).
), The drain water overflowing the trap portion 44 is discharged from the drain hose 50. Internal drain drain 41
Is in a state of being submerged in the stored water 51,
The inside of the inside drain socket 41 is shaped to be liquid-sealed from the outside.

On the other hand, when moisture invades into the duct 8 due to intrusion of moisture from the upper and lower storage chambers 5 and 6 due to poor sealing of the storage box 3 or penetration of moisture from the heat insulating box 2,
During a predetermined defrost period of the cooler 22 or the like, the drain water flows down the inner wall surface of the inner box 36 and reaches the seal member 52. Since the sealing material 52 is an open cell, the drain water penetrates the sealing material and enters the through hole 42, passes through the space between the funnel-shaped pipe 47 and the inside drain socket 41, and goes outside the outside drain socket 43. And merges with the stored water 51 stored therein, and is discharged from the drain hose 50. At this time, since the space between the funnel-shaped pipe 47 and the inside drain socket 41 communicates with the drain hose 50 on the downstream side of the trap portion 44 when viewed from the inside drain socket 41, the duct 8 and the lower storage chamber 6 Are not communicated with the air flow. Therefore, the cool air in the duct 8 does not flow into the lower storage chamber 6 to cause the inside to dry. Further, since the seal member 52 is provided between the duct 8 and the through hole 42, the cool air in the duct 8 does not leak from the drain hose 50 to the outside.

Further, in the embodiment, the funnel-shaped pipe 47 constituting the duct drainage portion is arranged on the outer periphery of the inside drain socket 41 constituting the storage room drainage portion. It can be. Note that the specific structures of the storage room drainage section and the duct drainage section are not limited to the embodiments, and can be variously changed without departing from the spirit of the present invention. For example, two holes may be formed in the heat-insulating box, and the storage room drainage portion and the duct drainage portion may be formed in different places.

[0020]

According to the present invention, in a cooling storage in which cool air is circulated in a duct to indirectly cool the inside of the storage box from the storage box wall surface, drain water generated inside the storage box is discharged from the storage box drainage section. Drain water generated in the duct can be discharged from the duct drainage section to the drain hose as well as being discharged to the drain hose. Therefore, it is possible to prevent poor cooling due to the growth of frost in the duct, and also to prevent corrosion of the duct constituting wall surface. Further, since the trap portion exists between the storage box drainage section and the duct drainage section, the inside of the storage box and the inside of the duct are not communicated with each other, and the drying of the storage chamber due to the inflow of cool air from the duct can be prevented. Things.

[Brief description of the drawings]

FIG. 1 is an enlarged vertical sectional view of a drainage path portion at the bottom of a cooling storage according to the present invention.

FIG. 2 is a front view of a cooling storage.

FIG. 3 is a longitudinal sectional view of a cooling storage.

FIG. 4 is an enlarged vertical sectional view at the bottom of a conventional cooling storage.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cooling storage 2 Heat insulation box 3 Storage box 8 Duct 22 Cooler 33 Drainage path 41 Inside drain socket 43 Outside drain socket 44 Trap part 50 Drain hose

 ──────────────────────────────────────────────────続 き Continuation of front page (56) References JP-A-2-272286 (JP, A) JP-A-4-90879 (JP, U) JP-A-61-116992 (JP, U)

Claims (1)

(57) [Claims] 1. A cooling storage having a heat-conductive storage box provided at a predetermined distance from the heat-insulating box in the heat-insulating box, wherein the space is a duct, and cool air is circulated in the duct. , A storage box drainage portion opened to the bottom of the storage box and connected to an external drain hose, a trap portion formed in a drainage path formed by the storage box drainage portion and the drain hose, A cooling storage, comprising: a duct drainage portion that communicates with the inside of the duct and the drain hose on a downstream side.