JPH11257832A - Cooling storage chamber - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance drain processing capability furthermore while avoiding trouble due to dew formation caused by a drain processor. SOLUTION: The cooling storage chamber is arranged with a drain evaporator 21 on the lower surface of a heat insulating box. The evaporator 21 comprises an evaporation pan 22 for receiving drain, a heater 23 for heating the evaporation pan 22, a ventilation fan 24 for sucking outer air being fed onto the evaporation pan 22 and discharged to the outside, and a case 25 for encasing the evaporation pan 22, the heater 23 and the ventilation fan 24.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cooling storage provided with a drain water evaporator.

[0002]

2. Description of the Related Art Conventionally, in this kind of cooling storage,
A cooler is installed in the storage room to cool the inside. However, since frost and dew adhere to the cooler and grow, melted water or dew of these frosts (hereinafter referred to as drain water) is discharged to the outside. It needs to be discarded or evaporated.

Therefore, conventionally, as shown in FIGS. 12 to 14, a drain pan 12 is provided below the cooler 10, and the drain pan 12 receives the drain water to form a drain hose 9.
Via an evaporator 105 provided on the lower surface of the heat insulating box 3 of the cooling storage 101.

[0004] Such an evaporating apparatus 105 comprises an evaporating dish 106 and a heater 107.
Is forcibly evaporated and vaporized by the heater 107 provided behind the evaporating dish 106.

[0005] Reference numeral 8 denotes a storage room formed in the heat insulating box 3, and 6 denotes a door for closing the front opening of the storage room 8.
Reference numeral 13 denotes a compressor, 14 denotes a condenser, and the heat insulating box 3
Is installed in the machine room 17 on the top surface of the cooling device and constitutes a refrigeration cycle of a cooling device together with the cooler 10. Reference numeral 15 denotes a condenser blower.

[0006]

However, in the conventional drain water evaporator 105, the water evaporated from the evaporator 105 is condensed on the lower surface of the heat insulating box 3 of the cooling storage box 101 cooled by cooling the inside. As a result, dew condensation occurs, rusting occurs on the lower surface of the heat insulating box 3, and the dew condensation water drops on the floor surface, causing a problem that the floor surface is soiled.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional technical problem, and can further improve the drainage water treatment capacity and prevent the disadvantages caused by dew condensation caused by the drainage water treatment apparatus. To provide a cold storage that can be avoided.

[0008]

SUMMARY OF THE INVENTION The cooling storage of the present invention comprises:
A drain water evaporator is installed on the lower surface of the heat insulating box,
Such an evaporating apparatus includes an evaporating dish that receives drain water, a heater that heats the evaporating dish, a ventilation fan that sucks outside air, ventilates the evaporating dish, and then discharges the outside to the outside, these evaporating dish, the heater, and And a case for storing the ventilation fan.

According to the present invention, in a cooling storage provided with an evaporator for drain water on the lower surface of the heat insulating box, the evaporator is provided with an evaporating dish for receiving the drain water, and a heater for heating the evaporating dish. After sucking outside air and ventilating on the evaporating dish,
Since it is composed of a ventilation fan that discharges to the outside and a case that houses these evaporating dish, heater and ventilation fan, the moisture evaporated from the evaporating dish is forcibly exhausted by the ventilation of the outside air by the ventilation fan. Become so.

Thus, it is possible to suppress a rise in humidity inside the evaporator, prevent dew condensation on the lower surface of the heat insulating box body thereabove, and thereby prevent rust from being generated, and also improve the drain treatment capacity of the evaporating dish.

The cooling storage according to the invention of claim 2 is characterized in that, in addition to the above, a case is provided in the case with a wind direction plate for guiding outside air sucked by the evaporator to the evaporating dish.

According to the second aspect of the present invention, in addition to the above, the evaporator is provided with a wind direction plate in the case for guiding the sucked outside air above the evaporating dish, so that the outside air sucked by the ventilation fan can be removed. The fluid flows smoothly on the evaporating dish, and both the ventilation capacity and the drain water treatment capacity can be further improved.

According to a third aspect of the present invention, there is provided a cooling storage unit.
In addition to the invention, the evaporator is provided with a filter at a portion where outside air flows into the case.

According to the third aspect of the present invention, in addition to the first aspect, the evaporator is provided with a filter in a portion where outside air flows into the case, so that dust and dirt enter the case. It is possible to prevent a decrease in the heating capacity of the heater due to the attachment to the heater.

According to a fourth aspect of the present invention, there is provided a cooling storage unit.
In addition to the above invention, a nonwoven fabric is laid on the bottom surface in the case of the evaporator.

According to the fourth aspect of the present invention, in addition to the first aspect of the present invention, the nonwoven fabric is laid on the bottom surface in the case. Is also absorbed by the non-woven fabric and is subjected to the evaporation treatment. This makes it possible to avoid the inconvenience that the dew drops below the case and soils the floor. According to a fifth aspect of the present invention, in addition to the first aspect of the present invention, a rail is provided on a lower surface of the heat insulating box so as to slidably support a flange at an upper end of a case. .

According to the fifth aspect of the present invention, in addition to the first aspect of the present invention, the rail for slidably supporting the flange at the upper end of the case is attached to the lower surface of the heat-insulating box. When mounting / removing the device, the flange can be placed on the rail and slid so that it can be performed very easily, and both the assembling workability and the maintenance workability can be improved. It is possible.

The cooling storage according to the invention of claim 6 is the first invention.
In addition to the above invention, the lower surface of the heat-insulating box body is slidably supported by a flange at the upper end of the case, and a mounting plate for closing the upper surface of the case is attached.

According to the sixth aspect of the present invention, in addition to the first aspect of the present invention, a flange at the upper end of the case is slidably supported on the lower surface of the heat insulating box, and a mounting plate for closing the upper surface of the case is mounted. Therefore, in addition to the effect of the fifth aspect, it is possible to more reliably stop the moisture evaporating from the evaporating dish and condensing on the lower surface of the heat insulating box with the mounting plate.
According to a seventh aspect of the present invention, in addition to the first aspect, the case has a drain supply port having one end connected to a drain hose from the heat insulating box and the other end opened on the evaporating dish. Is provided.

According to the seventh aspect of the present invention, in addition to the first aspect of the present invention, the case has one end connected to a drain hose from the heat insulating box and the other end opened to the evaporating dish. The drain water can be guided to the evaporating dish simply by connecting the drain hose to the drain supply port, which improves the workability of installing the evaporator and allows the drain hose to be directly inserted into the case. There is no gap between the case and the drain hose as compared with the case of drawing in, so that dust can be prevented from entering through the gap.

[0021]

Next, an embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 shows a cooling storage 1 to which the present invention is applied.
2 is a longitudinal sectional side view of the cooling storage 1, and FIG. 3 is a plan sectional view of the cooling storage 1.

The cooling storage 1 to which the present invention is applied is a commercial refrigerator, and its main body is constituted by a rectangular heat-insulating box 3 opening at the front. The heat-insulating box 3 is formed by filling a foamed polyurethane heat-insulating material between a stainless steel inner box 4 and an outer box 5 which open to the front, and a storage having the front opening 2 in the heat-insulating box 3. A chamber 8 is formed, and the opening 2 is closed and opened by a heat insulating door 6 rotatably supported on the right front surface of the heat insulating box 3.

A rectangular window hole is formed in the top wall 3A of the heat insulating box 3, and the heat insulating plate 7 is attached so as to close the window hole from above. On the upper surface of the heat insulating plate 7, a compressor 13, a condenser 14, a blower 15 for the condenser, a control box (not shown), and the like, which constitute a condensing unit of the cooling device, are installed. ) Located.

A panel 20 is provided around these condensing units.
Is attached and concealed, and a machine room 17 is formed on the top wall 3A of the heat insulating box 3. A control panel 16 for controlling the control box faces forward from the right side of the front surface of the panel 20. That is, the condensing unit is installed in the machine room 17.

On the other hand, a cooler 10 constituting a cooling unit of the cooling device and a blower 11 are mounted on the right side of the lower surface of the heat insulating plate 7, and these coolers 10 and the blower 11 Located in the upper inside.

A drain pan 12 is disposed below the cooler 10, and the drain pan 12 forwardly connects the drain water dropped from the cooler 10 to a drain hose 9 attached to the rear end of the drain pan 12. It is formed so as to be inclined downward from the rear. The lowermost end of the drain pan 12 is connected to a drain hose 9 provided on the inner wall surface and the bottom surface of the cooling storage 1 to guide the drain pan 12 to the bottom of the cooling storage 1. The drain hose 9 provided on the bottom of the cooling storage 1 is connected to an evaporator 21 for forcibly evaporating drain water through a drain socket 18 with a U-shaped trap attached to the bottom of the cooling storage 1. Have been.

Next, FIGS. 4 and 5 show the evaporator 21. FIG.
This will be described with reference to FIG. Here, FIG. 4 is a perspective view of the evaporator 21 before the filter 27 is attached, and FIG.
It is a perspective view of.

The evaporator 21 comprises an evaporating dish 22, a heater 23, a ventilation fan 24 and a case 25. The case 25 is made of a rectangular resin or metal whose front and top surfaces are continuously open. The edge of the upper surface of the case 25 is provided with the case 2
Flange 2 for attaching 5 to the bottom of cooling storage 1
5A is formed inward. A notch 25C for inserting the drain hose 9 is formed from the left (or right) flange 25A to the side surface.
The notch 25C allows the drain hose 9 to be inserted, and
The dimensions shall not easily come out. Further, a plurality of vertically elongated elliptical openings 25B are formed on the left, right and left side surfaces and the rear surface of the rear portion of the case 25 to allow air to be smoothly circulated by the ventilation fan 24 described later.

On the other hand, the evaporating dish 22 is formed in a rectangular shape having an opening on the upper surface, and the dimension of the evaporating dish 22 is formed to be slightly smaller in width than the width of the case 25, and the vertical width is set to be smaller than that of the case 25. It is formed smaller than the case 25 by the size of the ventilation fan 24 to be described later or more. Further, the evaporating dish 22 is formed so that the rear side is higher than the front side, and the left and right side surfaces are inclined upward from the front to the rear according to the height of the both side surfaces.

The evaporating dish 22 is mounted by a gate-shaped mounting plate 26 as shown in FIG. This mounting plate 2
When the evaporating dish 22 is fixed by 6, the evaporating dish 22 becomes
The upper edges of the left and right side surfaces are held horizontally. Thus, the bottom surface of the evaporating dish 22 is inclined downward from the front to the rear.

Further, the heater 23 is mounted at the center of the mounting plate 26, and the mounting plate 26 is
When attached to the back of 2, the drain water in the evaporating dish 22 can be heated and evaporated. In addition, this heater 23
For example, a so-called PTC heater capable of maintaining a constant temperature by increasing a temperature when a current is supplied and increasing a resistance value when a predetermined temperature is reached is used.

As shown in FIG. 5, a filter 27 having substantially the same size as the size of the front opening is attached to the front opening of the case 25 of the evaporator 21.

With the above configuration, the drain hose 9 and the drain socket 1 with a U-shaped trap are provided by the drain pan 12.
8 passes through the evaporating dish 2 of the evaporator 21.
2 and is stored behind the evaporating dish 22 due to the inclination of the evaporating dish 22. Next, the drain water stored behind the evaporating dish 22 is heated by the heater 23 and evaporates. At this time, the air in the evaporator 21 is sucked in from the front of the evaporator 21 and exhausted from the ventilation port 25B formed in the rear by the ventilation fan 24 attached to the rear of the heater 23.

Thus, the moisture evaporated from the evaporating dish 22 is smoothly and forcibly exhausted by the ventilation of the outside air by the ventilation fan 24. For this reason, it is possible to suppress a rise in humidity inside the evaporator 21, prevent dew condensation on the lower surface of the heat-insulating box body 3 thereabove, and thereby prevent rust from occurring, and improve the drain treatment capacity of the evaporating dish 22.

Further, since the filter 27 is attached to the front opening of the case 25 of the evaporator 21, the heating capacity of the heater 23 is increased by dust and dirt entering the case 25 and adhering to the heater 23. Can be prevented from decreasing.

Next, a second embodiment of the present invention will be described with reference to FIG.
This will be described with reference to FIG. FIG. 6 is a perspective view of the evaporator 28 of the second embodiment. The evaporator 28 of this embodiment is different from the evaporator 21 of the above-described embodiment in that the evaporating dish 22 in the case 25 is provided.
A wind direction plate 29 is provided in the front.

The wind direction plate 29 is a plate-like plate which is inclined high from the lower edge of the front opening of the case 25 to the front edge of the upper surface opening of the evaporating dish 22.

The evaporator 28 provided with the wind direction plate 29
Outside air is sucked from the front opening of the case 25,
Ascending along the inclination of the wind direction plate 29, passing above the evaporating dish 22, the ventilation port 2 provided around the ventilation fan 24.
5B causes the situation to flow.

Thus, according to the evaporator 28 of the present embodiment, the outside air sucked by the ventilation fan 24 flows smoothly onto the evaporating dish 22, and both the ventilation capacity and the drain water treatment capacity are further improved. Can be improved.

Next, a third embodiment of the present invention will be described with reference to FIG.
This will be described with reference to FIG. FIG. 7 shows an evaporator 30 according to the third embodiment.
It is a perspective view of. The evaporator 30 of this embodiment is provided on the inner bottom surface of the case 25 of the evaporator 21 of the above embodiment.
1 is laid.

The non-woven fabric 31 is a water-absorbing evaporation promoting material, and absorbs and evaporates drain water dropped on the inner bottom surface of the evaporator 30. This nonwoven fabric 31 is laid on the entire bottom surface of the case 25.

According to this configuration, dew condensation should occur on the lower surface of the heat insulating box 3 of the cooling storage 1, and the case 25 of the evaporator 30
Even if dropped inside, it is absorbed by the nonwoven fabric 31,
It will evaporate. As a result, the dew condensation occurs in Case 2
The inconvenience of dropping and soiling the floor surface from below 5 can be avoided beforehand.

Next, a fourth embodiment of the present invention will be described with reference to FIG.
This will be described with reference to FIG. FIG. 8 is a perspective view of the evaporator 21 and the rails 33, 33 according to the fourth embodiment.

In this embodiment, rails 33 for attaching the evaporator 21 to the lower surface of the heat insulating box 3 are provided in addition to the evaporator 21 of the first embodiment. The rails 33 are mounted on the lower surface of the heat insulating box 3 in advance and have substantially the same dimensions as the length of the case 25 of the evaporator 21 in the longitudinal direction. 25A, 25A can be inserted and supported.

A plurality of screw holes 33A for fixing the rail 33 to the heat insulating box 3 are formed inside the surface supporting the case 25.

With the above configuration, when the evaporator 21 is mounted on the cooling storage 1 in this embodiment, the rails 33, 33 are fixed to the lower surface of the heat insulating box 3 at predetermined intervals with screws (not shown). . Next, the flange 25A of the case 25 of the evaporator 21 is
3 and slide it in as far as it will go. When removing the evaporator 21 from the rails 33, 33, the evaporator 21 is moved forward from the rails 33, 33, as opposed to when the evaporator 21 is attached.
What is necessary is just to slide while sliding to 33.

With the above-described structure, according to the present embodiment, the work of attaching and detaching the evaporator 21 to and from the lower surface of the heat insulating box 2 can be performed very easily, and both the assembling workability and the maintenance workability can be achieved. Can be improved.

Next, a fifth embodiment of the present invention will be described with reference to FIG.
This will be described with reference to FIG. FIG. 9 is a perspective view of the evaporator 21 and the mounting plate 34 according to the fifth embodiment.

This embodiment is similar to the fourth embodiment, except that the evaporator 21 in addition to the evaporator 21 of the first embodiment is used.
Is provided on a lower surface of the heat insulating box 3. The mounting plate 34 is attached to the lower surface of the heat insulating box 3 in advance, and is made of a steel plate made of stainless steel or the like and formed to have substantially the same dimensions as the upper surface of the case 25 of the evaporator 21. The mounting plate 34 can insert the left and right flanges 25A formed on the case 25, and
Support portions 34A, 34A that can be supported are formed at both ends in the longitudinal direction.

With the above configuration, when the evaporator 21 is mounted on the cooling storage 1 in this embodiment, the mounting plate 34 is fixed to the lower surface of the heat insulating box 3 in advance with screws (not shown).
Next, the flanges 25A of the case 25 of the evaporator 21 are attached to support portions 34A, 34A formed on both side ends of the mounting plate 34.
And slide it in as far as it will go. Thereby, the upper surface of the evaporator 21 is covered with the mounting plate 34.
When removing the evaporator 21 from the mounting plate 34,
What is necessary is just to pull it, sliding the evaporator 21 forward, contrary to the case of attaching.

In this embodiment, the case 25 of the evaporator 21 is
Since the mounting plate 34 for closing the upper surface is attached, the operation of attaching and detaching the evaporator 21 to and from the lower surface of the heat insulating box 2 can be performed extremely easily, thereby improving both the assembling workability and the maintenance workability. It is possible to do. Further, the water that evaporates from the evaporating dish 22 and condenses on the lower surface of the heat insulating box 3 can be more reliably stopped by the mounting plate 34.

Next, a sixth embodiment will be described with reference to FIGS. FIG. 10 is a perspective view of the evaporator 32 and the rail 33 of the sixth embodiment, and FIG. 11 is a perspective view of the evaporator 32 of the sixth embodiment.

In the evaporator 32 of this embodiment, in addition to the evaporator 21 of the first embodiment described above, the case 25 of the evaporator 21 extends from the left (or right) flange 25A of the case 25 to the side surface. A drain supply port 35 for connecting the drain hose 9 is formed.

The drain supply port 35 is formed so as to protrude outward from the evaporator 32 so that the end 35A is connected to the drain hose 9, and the other end 35B is connected to the evaporator 32. It projects inside the case 25 so as to guide the drain water onto the evaporating dish 22 therein, and is formed downward toward the evaporating dish 22.

With the above structure, when the drain hose 9 is connected to the drain supply port 35, the connection is made between the drain hose 9 and the drain supply port 35 via the joint 36 (FIG. 11). The joint 36 is formed in such a size as to be in close contact with the inner diameter of the drain hose 9 and the inner diameter of the drain supply port 35. One end of the joint 36 is inserted into the end of the drain hose 9, and the other end of the joint 36 is connected. The connection is made by inserting the battery into the drain supply port 35.

With the above configuration, the drain water can be guided to the evaporating dish 22 simply by connecting the drain hose 9 to the drain supply port 35, and the workability of installing the evaporator 32 is improved. Also, the drain hose 9 is directly connected to the case 2
The gap between the case 25 and the drain hose 9 is eliminated as compared with the case where the dust hose is drawn into the inside 5, so that dust can be prevented from entering through the gap.

[0057]

As described above in detail, according to the present invention, in a cooling storage provided with an evaporating device for drain water on the lower surface of a heat insulating box, an evaporating device is provided with an evaporating tray for receiving drain water, A heater for heating the evaporating dish, a ventilation fan for sucking outside air to ventilate the evaporating dish, and then exhaust to the outside,
Since the evaporating dish, the heater, and the case accommodating the ventilation fan are configured, the moisture evaporated from the evaporating dish is smoothly and forcibly exhausted by the ventilation of the outside air by the ventilation fan.

Thus, it is possible to suppress a rise in humidity inside the evaporator, prevent dew condensation on the lower surface of the heat-insulating box body thereabove, and thereby prevent rust from being generated, and improve the drain treatment capability of the evaporating dish.

According to the second aspect of the present invention, in addition to the above, the evaporator is provided with a wind direction plate in the case for guiding the sucked outside air above the evaporating dish, so that the outside air sucked by the ventilation fan can be removed. The fluid flows smoothly on the evaporating dish, and both the ventilation capacity and the drain water treatment capacity can be further improved.

According to the third aspect of the present invention, in addition to the first aspect, the evaporator is provided with a filter at a portion where outside air flows into the case, so that dust and dirt enter the case. It is possible to prevent a decrease in the heating capacity of the heater due to the attachment to the heater.

According to the fourth aspect of the present invention, in addition to the first aspect of the present invention, since the nonwoven fabric is laid on the bottom surface in the case, dew condensation may occur on the lower surface of the heat insulating box and flow down into the case. Is also absorbed by the non-woven fabric and is subjected to the evaporation treatment. This makes it possible to avoid the inconvenience that the dew drops below the case and soils the floor.

According to the fifth aspect of the present invention, in addition to the first aspect of the present invention, the rail for slidably supporting the flange at the upper end of the case is attached to the lower surface of the heat insulating box, so that the lower surface of the heat insulating box is evaporated. When mounting / removing the device, the flange can be placed on the rail and slid so that it can be performed very easily, and both the assembling workability and the maintenance workability can be improved. It is possible.

According to the sixth aspect of the present invention, in addition to the first aspect of the present invention, a flange at the upper end of the case is slidably supported on the lower surface of the heat insulating box, and a mounting plate for closing the upper surface of the case is mounted. Therefore, in addition to the effect of the fifth aspect, it is possible to more reliably stop the moisture evaporating from the evaporating dish and condensing on the lower surface of the heat insulating box with the mounting plate.

According to the seventh aspect of the present invention, in addition to the first aspect of the present invention, the case has one end connected to the drain hose from the heat insulating box and the other end opened to the evaporating dish. The drain water can be guided to the evaporating dish simply by connecting the drain hose to the drain supply port, which improves the workability of installing the evaporator and allows the drain hose to be directly inserted into the case. There is no gap between the case and the drain hose as compared with the case of drawing in, so that dust can be prevented from entering through the gap.

[Brief description of the drawings]

FIG. 1 is a front view of a cooling storage to which the present invention is applied.

FIG. 2 is a vertical side view of a cooling storage to which the present invention is applied.

FIG. 3 is a plan sectional view of a cooling storage to which the present invention is applied.

FIG. 4 is a perspective view of a cooling storage evaporator according to the present invention before a filter is attached.

FIG. 5 is a perspective view of an evaporator of a cooling storage according to the present invention.

FIG. 6 is a perspective view of a cooling storage evaporator according to a second embodiment of the present invention.

FIG. 7 is a perspective view of a cooling storage evaporator according to a third embodiment of the present invention.

FIG. 8 is a perspective view of an evaporator and rails of a cooling storage according to a fourth embodiment of the present invention.

FIG. 9 is a perspective view of a cooling storage evaporator and a mounting plate according to a fifth embodiment of the present invention.

FIG. 10 is a perspective view of an evaporator and rails of a cooling storage according to a sixth embodiment of the present invention.

FIG. 11 is a perspective view of a cooling storage evaporator according to a sixth embodiment of the present invention.

FIG. 12 is a front view of a conventional cooling storage.

FIG. 13 is a vertical side view of a conventional cooling storage.

FIG. 14 is a plan sectional view of a conventional cooling storage.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cooling storage 3 Heat insulation box 9 Drain hose 12 Drain pan 21, 28, 30, 32 Evaporator 22 Evaporating dish 23 Heater 24 Ventilation fan 25 Case 25A Flange 25B Ventilation port 25C Notch 26 Mounting plate 27 Filter 29 Winding plate 31 Nonwoven fabric 33 Rail 34 Mounting plate 34A Supporting part 35 Drain supply port 36 Joint

Claims (7)

[Claims] 1. A cooling storage having an insulated box provided with an evaporator for drain water on a lower surface thereof, the evaporator comprising: an evaporating dish for receiving the drain water; a heater for heating the evaporating dish; A cooling storage, comprising: a ventilation fan that sucks air and ventilates the evaporating dish and then discharges the air to the outside; and a case that houses the evaporating dish, heater, and ventilation fan. 2. The cooling storage according to claim 1, wherein the evaporator includes a wind direction plate for guiding the sucked outside air onto the evaporating dish in the case. 3. The evaporator according to claim 1, wherein a filter is provided at a portion where outside air flows into the case.
Cold storage. 4. The cooling storage according to claim 1, wherein a nonwoven fabric is laid on a bottom surface in the case. 5. The cooling storage according to claim 1, wherein a rail for slidably supporting a flange at an upper end of the case is attached to a lower surface of the heat insulating box. 6. The cooling storage according to claim 1, wherein a flange at the upper end of the case is slidably supported on the lower surface of the heat insulating box, and a mounting plate for closing the upper surface of the case is mounted. 7. The cooling storage according to claim 1, wherein one end of the case is connected to a drain hose from the heat insulating box, and the other end is provided with a drain supply port opened on an evaporating dish. .