JP2002054870A - Draining structure of storage - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent formation of an icicle and cracking and deformation of a duct, by draining dew water dripping down from a water receiver, and the like, from a cooling duct. SOLUTION: On the rear surface side of the cooling duct 26 provided below the water receiver 35, a draining part 45 facing the lower side of a drainpipe 35b is formed aslant downward. A connecting pipe body 48 provided in continuity to the upper open end part of a pipe 31 for draining is constituted of a first pipe part 48b which extends aslant downward in relation to a drain port 48a opening in the inner wall surface of a holding chamber 20 and of a second pipe part 48c which is formed by bending downward almost vertically from the first pipe part 48b and fitted on the upper open end part of the pipe 31 for draining. The lower end of an opening end part in a draining part 45 of the cooling duct 26 is disposed in close contact with the inner lower side of the drain port 48a, and the dew water and the like received by the duct 26 is drained to the pipe 31 for draining, through the draining part 45 and the connecting pipe body 48.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drainage structure for a storage, and more particularly, to dew condensation generated in a water receiving tray for receiving defrosted water dropped from a cooler disposed in a heat insulating box such as a refrigerator. And the like are discharged to a drain formed in a heat insulating box through a cooling duct disposed below the water receiving tray.

[0002]

[Prior Art] Fresh food such as vegetables and fruits, meat and fish
(Hereinafter referred to as `` foodstuffs '') for long-term frozen storage, a storage room for storing foodstuffs is defined in the heat-insulating box, and cool air cooled by a cooler is circulated in this storage room to circulate the storage room. Reservoirs configured for direct cooling are known. An example of this storage is shown in FIG. Storage 1 shown
Reference numeral 0 denotes an outer box 12 having a rectangular opening that is largely open to the front side with a predetermined interval vertically separated, and is incorporated in the outer box 12 while maintaining a required gap, and is also largely open to the front side. A heat insulating box body 18 is formed of an inner box 14 and a heat insulating material 16 such as urethane foam filled between the two boxes 12, 14. A storage room 20 for storing foods is defined inside the heat-insulating box 18. On the front surface of the heat-insulating box 18, a heat-insulating door 22 that opens and closes the opening 18 a corresponding to each opening 18 a opened in the heat-insulating box 18.
Are arranged.

The inner box 1 is located above the heat insulating box 18.
A cooling duct 26 is provided at a lower position away from the ceiling surface of the cooling air duct 4, and a cooling chamber 24 is defined above the duct 26. The cooling chamber 24 has a suction port 28 formed on the front side of the bottom of the cooling duct 26 and an air outlet 30 formed on the rear side of the bottom.
And communicates with the storage room 20 through the outer box 1.
A cooler 34 connected to a refrigeration device 32 disposed on the outer ceiling surface of the second cooling room 24 is housed and disposed in the cooling chamber 24. An evaporator tube (not shown) is provided inside the cooler 34, and the refrigerant supplied from the refrigerating device 32 is configured to circulate through the evaporator tube. A blower fan 36 is provided in the suction port 28 so as to face the inside thereof. When the blower fan 36 rotates, the air in the storage chamber 20 sucked into the cooling chamber 24 through the suction port 28 is blown to the cooler 34, and contacts the cooler 34 to exchange heat. The generated air becomes cool air and is blown out from the cooling chamber 24 to the storage chamber 20 through the outlet 30. Further, the cool air is configured to circulate in the storage chamber 20 and repeat a cycle of returning to the cooling chamber 24 again.

Below the cooler 34, the cooler 34
A water receiving tray 35 for receiving defrost water or the like dropped from the water receiving tray 35 is disposed, and a drain pipe 35b is disposed on the rear side of the receiving tray 35. Further, an upper opening of a drain pipe 31 provided in a rear wall of the heat insulating box 18 is opened on an inner wall surface facing the cooling chamber 24, and the water receiving tray 3 is opened.
5 is configured to discharge the defrost water and the like received in 5 to an upper opening through a drain pipe 35b.

[0005]

In the storage 10 described above, the defrosting water or the like dropped from the cooler 34 can be discharged to the drain pipe 31 via the water tray 35 and the drain pipe 35b. Is formed on the outer surface of the cooling duct 26 and drops. For this reason,
There is a possibility that dew water overflowing from the cooling duct 26 freezes to form a glazing, or that the dew water freezes in the cooling duct 26 to break or deform the duct 26. When opening and closing the heat insulating door 22 of the storage 10, the inside of the storage chamber 20 is momentarily in a negative pressure state. In this case, defrost water or the like discharged into the drainage pipe 31 through the drainage pipe 35b of the water receiving tray 35 flows backward and flows into the cooling duct 26, and freezes in the duct as it is, or A problem such as freezing around the upper opening of the upper portion 31 occurs. It is conceivable to arrange a member for preventing backflow or to arrange a heater for preventing icing, but in either case, there is a drawback that the production cost and power consumption are increased. .

[0006]

SUMMARY OF THE INVENTION The present invention has been proposed in view of the above-mentioned drawbacks inherent in the drainage structure of a storage, and has been proposed to solve the problem suitably. By discharging from the duct, it is possible to prevent the generation of icicles, cracks and deformation of the duct, and defrost water flowing backward from the drain port accumulates in the cooling duct and freezes, and the upper opening of the drain pipe An object of the present invention is to provide a drainage structure of a storage that can prevent freezing in the periphery.

[0007]

Means for Solving the Problems To overcome the above-mentioned problems,
In order to appropriately achieve the intended purpose, the drainage structure of the storage according to the present invention is provided with a structure in which water is provided below a cooler provided in a cooling chamber defined by a cooling duct provided inside a heat insulating box. In a storage in which a receiving tray is arranged, and the defrost water dropped from the cooler to the water receiving tray is discharged to a drain port opened on the inner wall surface of the heat insulating box through a drain pipe provided in the water receiving tray, In the cooling duct, a drainage portion that can receive dew condensation water and the like dripped from the drainage pipe is provided so as to face below the drainage pipe, and the drainage part extends to the drainage port to drain the dew condensation water and the like into the drainage port. It is configured to be discharged to

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a drainage structure of a storage according to the present invention will be described below with reference to the accompanying drawings by way of preferred embodiments. FIG. 1 is a vertical sectional side view of a main part of a storage according to a preferred embodiment of the present invention. Since the basic structure of the storage is the same as that described in the section of the prior art with reference to FIG. 6, the same members as those already described are designated by the same reference numerals, and detailed description thereof will be omitted. I do.

An upper opening 18 is provided at the ceiling of the heat insulating box 18.
b is opened, and a pedestal 33 on which the refrigerating device 32 is placed is installed on the upper surface of the ceiling so as to cover the upper opening 18b. A cooling duct 26 is provided above the inside of the heat insulating box 18, and the cooling duct 26 and the pedestal 3
A cooler 34 is disposed in the cooling chamber 24 defined between the cooling device 3 and the cooling device 3. In addition, a pedestal heat insulating material 37 is interposed at the contact portion between the pedestal 33 and the heat insulating box 18 to seal the cooling chamber 24.

As shown in FIGS. 2 and 3, the cooling duct 26 has a substantially rectangular bottom surface 38 and a front slope formed at the front end of the bottom surface 38 with a required height step. A wall 40 and side walls 42 upright at both ends,
42 and a rear wall 46 standing upright at the rear end are integrally formed, and a flange 44 formed at the front end of the front slope wall 40 and extending a required length in parallel with the bottom surface 38 is provided in the inner box 14. It is screwed and fixed in a state of being in contact with the internal ceiling surface. On the rear side of the bottom surface 38 of the cooling duct 26, a drain portion 45 communicating with the drain pipe 31 is formed to extend. The drainage portion 45 is a gutter-like member extending rearward at a predetermined length at a position slightly displaced from the center in the width direction of the bottom surface 38 to one of the side wall surfaces 42. It is formed so as to be inclined downward.

An elbow-shaped connecting pipe 48 is connected to the upper open end of the drain pipe 31. The connecting pipe 48 is provided with a first pipe 48b that extends obliquely downward with respect to a drain port 48a that is arranged to be opened on the inner wall surface of the storage chamber 20, and extends substantially vertically downward from the first pipe 48b. And a second pipe portion 48c that is bent toward the outside and fitted externally to the upper open end of the drainage pipe 31. And
The lower end of the open end of the drainage part 45 of the cooling duct 26 is disposed in close contact with the inner lower surface of the drainage port 48 a, and the condensed water and the like received in the duct 26 pass through the drainage part 45 and the connection pipe 48. And is discharged to a drain pipe 31.

As shown in FIG. 1, the bottom surface 38 of the cooling duct 26 is set so as to be horizontal when installed above the inside of the heat insulating box 18, and has a front end portion and a rear end portion therein. A support 49 is integrally protruded from the corner. The support 49 is a portion on which the water receiving tray 35 disposed below the cooler 34 is placed, and among the supports 49 at the front end, as shown in FIG. The height is set to be slightly lower than the height of the inclined lower end, and the height of the support 49 at the rear end is set to be about 1/3 of the height of the support 49 at the front end. The water receiving pan 35 is a shallow dish-shaped member having an outer diameter set to be accommodated above the bottom surface 38 of the cooling duct 26, and the water receiving pan 35 is placed between the front and rear supports 49, 49. As shown in FIG. 1, the water receiving surface 3
5a is installed so as to be inclined downward from the front side to the rear side of the storage 10.

At the rear end of the water receiving tray 35, a drain pipe 35 facing above the drain 45 in the cooling duct 26 is provided.
b from the water receiving surface 35a to the drain 45
(See FIGS. 4 and 5). The extension end of the drain pipe 35b is connected to the first pipe section 48 through the drain port 48a of the connection pipe 48.
The first tube portion 48b is inserted into the inside of the first tube portion 48b by a predetermined length along the inclination of the first tube portion 48b. Accordingly, the defrost water received from the cooler 34 in the water receiving tray 35 flows down along the slope of the water receiving surface 35a and is collected in the drain pipe 35b.
The water is discharged to the drain pipe 31 through the pipe 8.

In the front slope wall 40 of the cooling duct 26, suction ports 28 (two in this embodiment, but one or three or more) are formed, and a blower fan corresponding to each suction port 28 is provided. 36 are provided. Each blower fan 36 is arranged to blow out the air in the storage room 20 toward the cooling room 24, and by rotating the blower fan 36,
The room air sucked from the front side of the storage room 20 is supplied to the cooling room 2.
The heat exchange is performed by contacting the cooler 34 arranged in the position 4. The upper end level of the rear wall surface 46 which stands upright at the rear end of the bottom surface 38, as shown in FIG.
It is set to be approximately 1/3 of the upper level of 2,42. The two side walls 42, 42 extend rearward from the bottom surface 38 by a required length, and the extended ends thereof are in contact with the inner rear surface of the inner box 14, and are provided on the rear side of the bottom of the cooling duct 26,
A bottom outlet 30 communicating the cooling chamber 24 and the storage chamber 20 is formed. That is, the cooler 34
The cold air after contacting the storage chamber 20 is blown out to the rear side of the storage chamber 20 through the bottom outlet 30.

The width dimension of the cooling duct 26 is
Is set to be shorter than the internal width dimension of the side air outlet space 5 between the cooling duct 26 and both inner side surfaces of the inner box 14.
0,50 are defined (see FIG. 2). At the upper end of the portion where the both side walls 42, 42 of the cooling duct 26 extend rearward from the rear wall 46, inclined portions 42a, 42a which are inclined at a gentle angle toward the inner rear surface of the inner box 14 are formed. Each of the inclined portions 42a and the inner rear surface and the inner ceiling surface of the inner box 14 define a communication portion 52 between the side blow-out space 50 and the cooling chamber 24 (see FIG. 1). ). That is, a part of the cool air sucked from the suction port 28 and contacted with the cooler 34 and cooled is discharged through the left and right communication portions 52 and 52 to the blowing spaces 50 and 5.
0, and other cool air is blown to the rear side of the storage chamber 20 through the bottom outlet 30. It should be noted that the bottom surface 3 extends to substantially the same position as the portion extending rearward of each side wall surface 42.
Each of the flanges 39 extending at both ends in the width direction of 8 and hanging at its rear end is screwed and fixed in contact with the inner rear surface of the inner box 14.

A heater 54 is provided at the bottom of the cooler 24, and is configured to heat the cooler 24 by the heater 54 periodically or at an arbitrary time to perform defrosting.
On the bottom surface 38 of the cooling duct 26, a heat insulating material 56 for duct is arranged between the cooling duct 26 and the water receiving tray 35.

[0017]

Next, the operation of the drainage structure of the storage having the above-described structure will be described. In the storage chamber 20 defined inside the heat-insulating box 18, the extending ends of the side walls 42, 42 and the flange 39,
39 is screwed and fixed by abutting on the inner rear surface of the inner box 14, and the flange 44 of the cooling duct 26 is screwed and fixed by abutting on the inner ceiling surface of the inner box 14. This allows
A cooling chamber 24 is defined above the cooling duct 26, and a bottom outlet 30 is defined behind the bottom. In addition, side air outlet spaces 50 and 5 are provided on both left and right sides of the cooling duct 26.
The communication portions 52, 52 that communicate with 0 are defined.

With the heat insulating doors 22 and 22 closed, the refrigerant is circulated to the cooler 34 and the blower fan 36 is rotated, so that the blower fan 36
After the air sucked from 8 is brought into contact with the cooler 34 to be cooled, the air is blown downward from the bottom outlet 30 toward the rear of the storage chamber 20. This cold air is applied to the rear surface of the storage room 20,
Circulating with the bottom surface and the front surface, the cooling chamber 2
It is sucked into 4. Further, a part of the cool air that has come into contact with the cooler 34 is supplied to the side blow-out spaces 50
It is blown out toward. The cool air flows down along both side surfaces of the storage room 20 to cool the storage room 20. This allows
The temperature distribution in the storage room 20 becomes uniform, and abnormal drying and discoloration of the stored food stored in the storage room 20 depending on the storage location can be suppressed. The cool air blown out from the cooler 34 hits the rear wall surface 46 of the cooling duct 26 and flows toward both the left and right sides. . The rotation of the blower fan 36 causes the cooling chamber 24 to rotate.
Since the internal pressure is relatively higher than the internal pressure of the storage chamber 20, the cool air sucked into the cooling chamber 24 and coming into contact with the cooler 34 flows into the left and right communication portions 52, 52 and the bottom outlet. 30 is efficiently blown out to the storage room 20.

As described above, when the operation of the storage 10 is continued, the cooler 34 is frosted over time, thereby lowering the cooling efficiency.
And a defrosting operation is performed. The defrost water dropped from the cooler 34 by this defrosting operation is received by the water receiving tray 35, flows down along the slope of the water receiving surface 35a, is collected by the drain pipe 35b, and is drained. The water passes through the pipe 35b and is discharged to the drain pipe 31 through the connecting pipe 48. In addition, since the drain pipe 35b is inclined downward, the defrost water flows smoothly and does not remain in the pipe.

The main body of the water receiving pan 35 and a drain pipe 35b
All the condensed water generated on the outer surface of the cooling water drops on the bottom surface 38 and the drainage portion 45 of the cooling duct 26, and the condensed water is discharged from the drainage portion 45 to the drainage pipe 31 via the connection pipe 48. Since the drain 45 is inclined downward, the dew water does not flow smoothly and remains, and it is possible to prevent the dew water from freezing in the cooling duct 26 and causing cracks and deformation. Further, the opening end of the drain portion 45 is disposed in close contact with the inner lower surface of the drain port 48a of the connection pipe 48, and the drain portion 45 is inclined downward, so that it is generated by opening and closing the heat insulating door 22. Due to the negative pressure in the storage chamber 20, it is possible to prevent defrost water and dew water from flowing backward from the drain pipe 31 and flowing into the cooling duct 26. Since the first pipe portion 48b of the connecting pipe 48 is also inclined downward, defrosting water and dew water flowing backward from the drain pipe 31 flow through the cooling duct 26 via the connecting pipe 48.
Can be suppressed. Further, the second connection pipe 48
The pipe portion 48c is fitted around the drainage pipe 31 so that no step is formed on the inner surface side of the connection portion.
Drainage does not accumulate in the connecting portion, and icing around the upper opening of the pipe 31 can be prevented.

The water receiving tray 35 and the cooling duct 26
Since the heat insulating material 56 for the duct is disposed between the cooling device 34 and the cooling device 34, the cooling of the cooling duct 26 by the cooler 34 is suppressed, and the freezing of the duct 26 is prevented. In addition, during the above-described defrosting operation, the heat of the heater 54 is prevented from being transmitted to the storage room 20, and an increase in the room temperature can be suppressed.
Further, dew condensation on the water receiving tray 35 can be prevented.
Further, by placing the water receiving tray 35 on the heat insulating material 56 for the duct, the positioning of the water receiving tray 35 can be suitably performed.

[0022]

As described above, according to the drainage structure of a storage according to the present invention, dew condensation or the like generated on the outer surface of the water receiving tray and dropped on the cooling duct is discharged through the drainage portion of the heat insulating box. Can be prevented from being cracked or deformed due to icing of dew water or the like in the cooling duct. In addition, since the drainage section is inclined downward and the opening end thereof is arranged in close contact with the inner lower surface of the drainage port, the inside of the storage chamber becomes negative pressure due to opening and closing of the storage chamber door, so that defrosting water and Even if dew condensation water or the like flows backward from the drain port, the water does not return to the cooling duct and accumulates, so that icing around the connection part of the drain part with the drain port can be prevented. That is, there is no need to separately provide a member for preventing backflow or to dispose a heater for preventing icing, so that manufacturing costs and running costs can be reduced.

[Brief description of the drawings]

FIG. 1 is a vertical sectional side view of a main part of a storage according to a preferred embodiment of the present invention.

FIG. 2 is a plan view illustrating a cooling duct according to the embodiment.

FIG. 3 is a longitudinal side view of a cooling duct according to the embodiment.

FIG. 4 is a plan view of a water receiving tray according to the embodiment.

FIG. 5 is a vertical sectional side view of a water receiving tray according to the embodiment.

FIG. 6 is a schematic vertical sectional side view of a storage according to a conventional technique.

[Explanation of symbols]

18 Insulated box, 24 Cooling room, 26 Cooling duct, 34
Cooler 35 Water pan, 35b Drain pipe, 45 Drainage part, 48a
Drain

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Mitsuyuki Takaoka 3-16, Hoshizaki Electric Co., Ltd. F-term (reference) 3L048 AA06 AA07 AA09 BA01 BC01 CA02 CB03 CB05 CB08 CB10 DA02 FA01 GA02

Claims (2)

[Claims] 1. A cooler (34) provided in a cooling chamber (24) defined by a cooling duct (26) provided inside a heat insulating box (18).
A water receiving tray (35) is disposed below the chiller (34), and the defrosted water dropped from the cooler (34) to the water receiving tray (35) is insulated through a drain pipe (35b) provided in the water receiving tray (35). In a storage configured to discharge to a drain port (48a) opened on the inner wall surface of the box (18), a drainage section that can receive dew condensation water and the like dropped from the drainage pipe (35b) to the cooling duct (26). (45) is provided so as to face below the drain pipe (35b), and the drain part (45) is connected to the drain port (4
A drainage structure for a storage, wherein the drainage structure extends to 8a) and discharges condensed water and the like to the drainage port (48a). 2. The drainage part (45) is inclined downward,
2. A drainage structure for a storage according to claim 1, wherein an open end thereof is disposed in close contact with an inner lower surface of said drainage port (48a).