JP2004239474A - Dew condensation water draining structure for showcase - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve maintenance by preventing the contamination of a floor due to the drop of dew condensation water deposited on a door of a showcase. <P>SOLUTION: The showcase has a storage room 16 and a machine room 18 vertically formed therein. An opening portion of the storage room 16 is closed with a swing door 20. A liquid receiving portion 42 is provided between the swing door 20 and a front panel 24 of the machine room 18 separately from the front panel 24 for receiving the dew condensation water dropping from the door 20. The dew condensation water dropping on the liquid receiving portion 42 is accelerated to evaporate with hot air exhausted from a vent hole opened in an upper end face 24c of the front panel 24. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a dew condensation water discharge structure of a showcase, and particularly to a showcase having a swing door, in which a floor surface or the like is not contaminated by dripping of dew condensation water attached to the swing door. It is related to the water discharge structure.
[0002]
[Prior art]
Showcases for refrigerated storage of foods, beverages, and other preserved items are installed in shopping centers, convenience stores, and the like. As shown in FIG. 7, this showcase includes a compressor, a condenser, and a fan for a condenser below a heat insulating box 10 in which a space defined by an inner box 12 and an outer box 14 is filled with a heat insulating material. It has a configuration in which the machine room 18 in which the cooling device 30 composed of the above is disposed is defined. On the front surface of the storage chamber 16 defined inside the heat-insulating box 10, a rectangular opening 10a opening forward is opened. The opening 10a is openably and closably closed by a swing door 20 rotatably supported by hinges provided at an upper portion and a lower portion thereof. At the front side of the machine room 18, a front panel 24 for opening and closing an opening for maintenance of a cooling device or the like is provided detachably.
[0003]
A cooler 34 to which a refrigerant is circulated and supplied from a cooling device 30 in the machine room 18 and a cooling room 32 in which a cool air circulation fan 36 is housed are defined between the machine room 18 and the housing room 16. Then, the air in the storage chamber 16 sucked into the cooling chamber 32 is forcibly brought into contact with the cooler 30 to be cooled, and then blown out into the storage chamber 16 so that the storage chamber 16 is cooled. Is configured. At the bottom of the cooling chamber 32, a water receiving tray 38 for receiving defrost water or the like dropped from the cooler 34 is provided, and a drain pipe 40 is provided in the water receiving tray 38. The defrosting water and the like received in the water receiving tray 38 through the drain pipe 40 are discharged to the evaporating tray 26 disposed below the machine room 18.
[0004]
In the showcase, dew condensation on the outer surface (front surface) of the swing door 20 closing the storage chamber 16 may occur due to the difference between the internal temperature and the external air temperature during the cooling operation or the external humidity. Inevitable. For example, in the case of a showcase that has a sliding door that closes the storage room by sliding left and right, of the rails that slidably hold the sliding door, the lower rail disposed below draws dew condensation water. There is a type that functions as a liquid receiving part and discharges dew water to an evaporating dish from a drain hole provided in the lower rail. However, a showcase in which one end edge is held by one or more hinges and the swing door 20 that opens and closes the storage chamber 16 by rotating about the hinge as a fulcrum is not provided with the lower rail described above. For this reason, there is no place to receive the condensed water dropped from the swing door 20, and the dropped condensed water is scattered and soils the floor. Therefore, in the case of a showcase in which the swing door 20 is employed, it is general to provide a heater for preventing dew condensation on the swing door 20.
[0005]
However, since the dew condensation preventing heater heats the swing door 20, the cooling capacity of the storage chamber 16 is impaired, and power consumption is increased. Therefore, in order to solve these problems, the receiving portion formed below the swing door receives the condensed water dripping from the door, and the condensed water is passed through a drain pipe provided in the machine room to the machine. A condensed water discharge structure of a showcase that discharges water to an evaporating dish disposed at a lower part of a chamber has been proposed (for example, see Patent Document 1).
[0006]
[Patent Document 1]
JP 2000-253970 A
[Problems to be solved by the invention]
However, the condensed water discharge structure disclosed in Patent Document 1 has a structure in which not only defrost water discharged from the cooling chamber but also condensed water is stored in the evaporating dish, so that the capacity of the evaporating dish is increased. There is a need. This leads to an increase in the size of the showcase itself, which is contrary to the recent demand for downsizing the showcase. If the capacity of the evaporating dish is reduced, the frequency of discarding the condensed water or the like increases so that the dew water or the like stored in the evaporating dish does not overflow.
[0008]
[Object of the invention]
The present invention has been proposed to solve these problems in view of the above-described problems inherent in the dew condensation water discharge structure of a showcase according to the related art. It is an object of the present invention to provide a showcase dew-water discharge structure that can improve maintainability by preventing the floor from becoming dirty and promoting evaporation of the collected dew water.
[0009]
[Means for Solving the Problems]
In order to overcome the above-mentioned problems and achieve a predetermined object, the dew condensation water discharge structure of the showcase according to the present invention includes:
In a showcase provided with a door that opens and closes an opening of a storage room defined inside the heat-insulating box so as to be able to open and close, and a machine room having a cooling device provided below the storage room,
A liquid receiving unit provided to be located below the door and receiving dew water dropped from the door;
Opened at the upper end surface of the panel covering the front of the machine room, and comprises a vent hole facing below the liquid receiving portion,
It is characterized in that a part of the warm air discharged from the machine room is brought into contact with the back surface of the liquid receiving part through the vent hole.
[0010]
In order to overcome the above-mentioned problems and achieve a predetermined object, a condensed water discharge structure of a showcase according to another invention of the present application is provided.
In a showcase provided with a door that opens and closes an opening of a storage room defined inside the heat-insulating box so as to be able to open and close, and a machine room having a cooling device provided below the storage room,
A first liquid receiving unit that is provided below the door and receives dew water dripped from the door;
A second storage unit is provided below the panel covering the front surface of the machine room and at a position close to the ventilation hole formed in the panel, and stores dew water arriving from the first liquid receiving unit via a drain pipe. And a liquid receiving part.
A part of the warm air flowing from the machine room toward the vent hole is configured to contact the dew water stored in the second liquid receiving portion.
[0011]
BEST MODE FOR CARRYING OUT THE INVENTION
Next, a description will be given of a condensed water discharge structure of a showcase according to the present invention with reference to the accompanying drawings by taking a preferred embodiment. For convenience of description, the same elements as those of the showcase shown in FIG. 7 are denoted by the same reference numerals, and detailed description is omitted.
[0012]
[First embodiment]
As shown in FIG. 1 or FIG. 2, the showcase provided with the dew condensation water discharge structure according to the first embodiment has a body formed by filling a foam insulating material such as urethane between an inner box 12 and an outer box 14. Inside the heat insulating box 10, a storage room 16 for storing a preserved product such as food or beverage is defined, and a machine room 18 is defined below the heat insulating box 10. In the heat-insulating box 10, the storage chambers 16 are partitioned into a required number in the width direction by a partition plate or the like, and an opening 10a is opened in the front of each storage chamber 16. In addition, a swing door (door) 20 is provided on the heat-insulating box 10 so as to be rotatable at one end via hinges 22 so that each opening 10a can be closed. . The swing door 20 has a frame or the like fitted with glass or the like so that the stored matter stored in the storage room 16 can be seen through from the outside.
[0013]
As shown in FIG. 2, the machine room 18 accommodates a cooling device 30 including a compressor, a condenser, a condenser fan, and the like. A cooling chamber 32 in which the fan 36 is stored is defined between the machine chamber 18 and the storage chamber 16. The cooling chamber 32 is formed with a suction port and a discharge port that communicate the storage chamber 16 and the cooling chamber 32. By rotating the cool air circulation fan 36, the storage chamber sucked into the cooling chamber 32 from the suction port is formed. The storage chamber 16 is configured to be cooled by forcibly bringing the air in the chamber 16 into contact with the cooler 34 to cool the air, and then blowing the air into the storage chamber 16 through the outlet. At the bottom of the cooling chamber 32, a water receiving tray 38 for receiving defrost water or the like dropped from the cooler 34 is disposed, and a drain pipe 40 is connected to the water receiving tray 38. The drain pipe 40 communicates with the evaporating dish 26 disposed below the machine room 18, and the defrosted water and the like received in the water receiving tray 38 pass through the evaporating dish 26 via the drain pipe 40. It is to be discharged to.
[0014]
A front panel (panel) 24 for closing an opening formed in the front of the machine room 18 is detachably provided on the front surface of the machine room 18, and cools a compressor and the like provided inside the machine room 18. The device 30 can be maintained. The front panel 24 is formed in a box shape having one open side. As shown in FIG. 3, a plurality of ventilation holes 25 are formed on a front surface 24 a and side surfaces 24 b of the front panel 24 so as to ventilate the inside of the machine room 18. At the same time, an upper air hole (air hole) 25c facing the outer bottom surface (back surface) of the liquid receiving portion 42 described later is opened in the upper end surface 24c. That is, the warm air generated by heat exchange with the cooling device 30 by being sucked from the outside by the rotation of the condenser fan is discharged to the outside through the ventilation holes 25 and 25c of the front panel 24. Is done.
[0015]
Between the lower part of the swing door 20 and the upper end surface 24c of the front panel 24 closing the machine room 18, a liquid receiving part 42 for receiving dew condensation water dripping from the outer surface of the door 20 is provided. It is arranged detachably with respect to. The liquid receiving section 42 is provided separately from the front panel 24, and is arranged at a required distance from the lower end face of the swing door 20 and the upper end face 24c of the front panel 24 (see FIG. 2). The liquid receiving portion 42 is at least as long as the width of the swing door 20 and is a long plate made of a sheet metal or resin sized so as to have a width extending in the front direction beyond the thickness of the door 20. Member. That is, the liquid receiving section 42 is set to have a size capable of receiving the condensed water dripped from the swing door 20, and has its bottom face facing the upper vent 25c formed in the upper end face 24c of the front panel 24. Is located in the position. In the liquid receiving portion 42, a drain hole 42a for discharging the dew condensation water collected in the liquid receiving portion 42 is provided at a position substantially at the center in the width direction and near the heat insulating box 10. A drain pipe 44 is connected to the drain hole 42a. The liquid receiving portion 42 is formed in a gutter shape that is inclined downward from the front to the back of the showcase and also gently inclines downward toward the drain hole 42a in the width direction of the showcase. Is efficiently guided to the drain hole 42a.
[0016]
As the drain pipe 44, a flexible hose such as a metal or resin pipe or vinyl is used. The drain pipe 44 connected to the drain hole 42a penetrates the upper end surface 24c of the front panel 24, and is disposed inside the machine room 18. The drain pipe 44 penetrates through the bottom of the machine room 18 so that its outlet faces the inside of the evaporating dish 26. That is, excess condensed water collected in the liquid receiving part 42 and not completely evaporated on the liquid receiving part 42 is guided to be stored in the evaporating dish 26 via the drain pipe 44. .
[0017]
[Operation of the first embodiment]
Next, the operation of the condensed water discharge structure of the showcase according to the first embodiment will be described. When the cooling operation of the showcase is started, the storage chamber 16 is cooled by the operation of the cooling device 30, the cooler 34, the cool air circulation fan 36, and the like. In addition, the cooling device 30 having heat accompanying the cooling operation exchanges heat with the outside air sucked into the machine room 18 and is air-cooled. Hot air whose temperature has increased after the heat exchange is provided on the front panel 24. The air is discharged through the vent holes 25, 25c. The warm air discharged from the upper vent hole 25c formed in the upper end surface 24c of the front panel 24 is separated from the upper end surface 24c and extends in the front direction to form the outer bottom surface of the liquid receiving portion 42. And the liquid receiving part 42 is heated. Since the liquid receiving portion 42 is set so as to extend forward from the front surface of the swing door 20, the warm air discharged along the outer bottom surface of the liquid receiving portion 42 causes the swing door 20 to move. Do not warm.
That is, by providing the upper ventilation hole 25c in the upper end surface 24c of the front panel 24, the cooling efficiency of the storage chamber 16 is not impaired. Therefore, since the front panel 24 can have many ventilation holes 25 and 25c, the heat exchange efficiency in the machine room 18 is improved.
[0018]
When the outside (front side) of the swing door 20 becomes lower than the dew point temperature due to the temperature difference between the outside air temperature and the inside temperature and the outside humidity, the dew condensation occurs. Starts, and the condensed water generated on the front surface of the door 20 drops onto the liquid receiving section 42. Since the liquid receiving part 42 is heated by the above-described warm air discharged from the upper air vent 25c formed in the upper end surface 24c of the front panel 24, the evaporation of the condensed water dropped on the liquid receiving part 42 is prevented. Is prompted. The condensed water that cannot be completely evaporated is guided to the drain hole 42 a by the inclination provided in the liquid receiving part 42, and is discharged to the evaporating dish 26 through the drain pipe 44. That is, since the dew condensation water dripped from the swing door 20 is received by the liquid receiving part 42, the floor surface or the like does not get wet with the dew condensation water.
[0019]
Here, a part of the dew condensation water stored in the evaporating dish 26 together with the defrost water evaporates with the lapse of time, but when a certain amount or more is accumulated, maintenance such as removing the evaporating dish 26 and discarding the internal water is performed. Do. In this case, a part of the dew condensation water collected in the liquid receiving part 42 is heated and evaporated by the warm air discharged from the machine room 18, so that the amount of the dew condensation water flowing into the evaporating dish 26 is As a result, the frequency of discarding dew condensation water and the like from the evaporating dish 26 can be reduced.
[0020]
In addition, since the liquid receiving section 42 is provided independently, it can be replaced alone when it is damaged. Further, when the liquid receiving section 42 becomes dirty, it can be easily removed and washed.
[0021]
[Second embodiment]
FIGS. 4 and 5 show a dew condensation water discharging structure of a showcase according to the second embodiment. The basic components of the structure are the same as those of the above-described embodiment. The same members are given the same reference numerals. In the second embodiment, the dew condensation water received by the first liquid receiving part 48 provided integrally on the upper part of the front panel 24 facing the lower part of the swing door 20 is supplied to the second liquid receiver provided inside the front panel 24. The unit 54 is configured to temporarily store. That is, the first liquid receiving portion 48 constitutes the upper surface of the front panel 24 and has a length at least equal to or greater than the width of the swing door 20 and a width extending in the front direction more than the thickness of the swing door 20. The swing door 20 is set so as to be able to receive dew condensation water dripped from the swing door 20. A drain hole 48a for discharging the condensed water dropped on the liquid receiving portion 48 is opened substantially at the center of the first liquid receiving portion 48 and in the vicinity of the heat insulating box 10. The drain hole 48a is formed in the drain hole 48a. The drain pipe 52 is connected. The first liquid receiving section 48 is inclined downward toward the drain hole 48a, and is configured to efficiently guide the dew condensation water to the drain hole 48a. In the second embodiment, the front panel 24 has ventilation holes 25 only on the front surface 24a and the side surface 24b.
[0022]
As shown in FIG. 5, a drain pipe 52 connected to a drain hole 48a of the first liquid receiving portion 48 is provided in a position where the drain pipe 52 is piped in the machine room 18 and is exposed to warm air in the front panel 24. The outlet of the second liquid receiving portion 54 faces the inside. That is, the condensed water dropped on the first liquid receiving section 48 is guided to the second liquid receiving section 54 through the drain pipe 52. The second liquid receiving portion 54 is provided below the front panel 24 and at a position close to the ventilation hole 25, and stores the dew water coming from the first liquid receiving portion 48 and from the machine room 18. The condensed water is exposed to the warm air flowing toward the ventilation hole 25, and the evaporation of the dew condensation water is promoted. Further, the second liquid receiving portion 54 is set so as to face above the evaporating dish 26, and the dew water overflowing from the second liquid receiving portion 54 flows into the evaporating dish 26 and is stored therein.
[0023]
[Operation of the second embodiment]
In the dew water discharge structure of the showcase according to the second embodiment, the dew water dropped from the swing door 20 is received by the first liquid receiving part 48, as in the first embodiment described above. The floor etc. do not get wet. Since the first liquid receiving portion 48 is provided integrally with the front panel 24, the first liquid receiving portion 48 is heated by the warm air in the machine room 18, and a part of the dew condensation water collected in the liquid receiving portion 48 evaporates. I do. Further, since the second liquid receiving portion 54 for temporarily storing the dew water from the first liquid receiving portion 48 is disposed in the path of the warm air, the dew water is positively utilized by using the warm air. Evaporation can be promoted. Therefore, the amount of dew water flowing into the evaporating dish 26 can be further suppressed, and the frequency of discarding water from the evaporating dish 26 can be further reduced.
[0024]
[Modification of the second embodiment]
In a showcase according to a modification of the second embodiment, a liquid receiving portion (first liquid receiving portion) 42 similar to that of the first embodiment is formed separately from the upper end surface 24c of the front panel 24 as shown in FIG. A configuration is employed in which the dew water arriving from the first liquid receiving section 42 is temporarily stored in the second liquid receiving section 54. In this dew-condensed water discharge structure, the condensation of dew-water is accelerated by the warm air in the first liquid receiving part 42, and the dew condensation flowing down from the first liquid receiving part 42 and temporarily stored in the second liquid receiving part 54 The water is further evaporated by being exposed to the warm air in the machine room 18. Accordingly, the amount of dew water flowing into the evaporating dish 26 is suppressed, and the frequency of discarding water from the evaporating dish 26 can be further reduced.
[0025]
【The invention's effect】
As described above, according to the condensed water discharge structure of the showcase according to the present invention, since the liquid receiving portion that receives the condensed water dropped from the door is configured to be heated by the warm air from the machine room, the condensed water is discharged with the condensed water. It is possible to prevent the floor from being soiled and to promote evaporation of the dew condensation water collected in the liquid receiving section. Therefore, it is possible to reduce the amount of dew condensation water discharged from the liquid receiving portion to the evaporating dish and accumulate therein, thereby reducing the frequency of maintenance of the evaporating dish, and reducing the capacity of the evaporating dish to reduce the size of the showcase itself. It becomes. In addition, by using warm air as a heating unit of the liquid receiving unit, there is no need to provide a separate heating source, and cost can be reduced. By forming the liquid receiving part separately from the front panel, a ventilation hole can be provided also at the upper end surface of the front panel, so that the heat exchange efficiency of the machine room can be improved.
[0026]
Furthermore, the dew water received in the first liquid receiving part receiving the dew water dropped from the door is temporarily stored in the second liquid receiving part exposed to the warm air in the machine room, and more positively utilizing the hot air. By adopting a configuration that promotes the evaporation of the condensed water, further evaporation of the condensed water can be promoted. Therefore, the amount of dew water discharged from the second liquid receiving portion to the evaporating dish and accumulated therein can be further suppressed, and the maintenance frequency of the evaporating dish can be further suppressed.
[Brief description of the drawings]
FIG. 1 is a partially cutaway front view showing a showcase provided with a dew condensation water discharge structure according to a preferred embodiment of the present invention.
FIG. 2 is a longitudinal sectional view showing a main part of a showcase provided with the dew condensation water discharge structure according to the first embodiment.
FIG. 3 is a perspective view of a main part showing a showcase provided with the dew condensation water discharge structure according to the first embodiment.
FIG. 4 is a longitudinal sectional view showing a main part of a showcase provided with a dew condensation water discharge structure according to a second embodiment.
FIG. 5 is a main part perspective view showing a showcase provided with a dew condensation water discharge structure according to a second embodiment.
FIG. 6 is an enlarged longitudinal sectional view showing a main part of a showcase provided with a dew condensation water discharge structure according to a modification of the second embodiment.
FIG. 7 is a longitudinal sectional view showing a main part of a conventional showcase.
[Explanation of symbols]
Reference Signs List 10 Insulated box, 10a opening, 16 storage room, 18 machine room 20 swing door (door), 24 front panel (panel), 24c upper end surface 25 vent, 25c upper vent (vent), 26 evaporating dish, Reference Signs List 30 cooling device 42 liquid receiving part (first liquid receiving part), 44 drainage pipe, 48 first liquid receiving part, 52 drainage pipe 54 second liquid receiving part

Claims (6)

A machine room (18) having a door (20) for opening and closing an opening (10a) of a storage room (16) defined inside the heat insulating box (10) and having a cooling device (30) is provided. In a showcase provided below the storage room (16),
A liquid receiving section (42) provided to be located below the door (20) and receiving dew water dropped from the door (20);
A vent hole (25c) opened on the upper end surface (24c) of the panel (24) covering the front surface of the machine room (18) and facing below the liquid receiving part (42);
Condensed water in a showcase, wherein a part of warm air discharged from the machine room (18) is brought into contact with the back surface of the liquid receiving part (42) through the vent hole (25c). Discharge structure. The excess condensed water stored in the liquid receiving part (42) is discharged to an evaporating dish (26) provided below the machine room (18) via a drain pipe (44). Condensation water discharge structure of the showcase. A machine room (18) having a door (20) for opening and closing an opening (10a) of a storage room (16) defined inside the heat insulating box (10) and having a cooling device (30) is provided. In a showcase provided below the storage room (16),
A first liquid receiving section (42, 48) that is provided below the door (20) and receives dew water dropped from the door (20);
The first liquid receiving part (42, 42) is provided below the panel (24) covering the front surface of the machine room (18) and at a position close to the ventilation hole (25) opened in the panel (24). 48) and a second liquid receiving portion (54) for storing dew water arriving through the drain pipe (52).
A dew condensation in a showcase, wherein a part of warm air flowing from the machine room (18) toward the ventilation hole (25) is brought into contact with dew water stored in the second liquid receiving part (54). Water discharge structure. The structure according to claim 3, wherein the first liquid receiving portion (48) forms an upper surface of the panel (24). The first liquid receiving section (42) is provided separately from the panel (24), is located above an upper end surface (24c) of the panel (24), and is discharged from the machine chamber (18). 4. The showcase according to claim 3, wherein a portion of the warm air is brought into contact with the back surface of the first liquid receiving portion (42) through a vent (25c) formed in the upper end surface (24c). Condensed water discharge structure. The condensed water discharge structure for a showcase according to any one of claims 3 to 5, wherein the dew water overflowing from the second liquid receiving portion (54) is discharged to the evaporating dish (26).

Images