JPH0791807A - Showcase - Google Patents

Abstract

PURPOSE:To provide a showcase capable of restraining inconvenience of generating clogging in a filter provided at a suction port. CONSTITUTION:A suction port cover 22, equipped with a plurality of slits 21 and covering suction ports 18, 19, is provided while a filter 59 is attached to the suction port cover 22. The filter 59 is constituted of fore-and-aft sides 66, 67, which are extended upwardly from the lower end 63 of the filter 59 while being separated from each other.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a showcase in which cool air is discharged from a discharge port at an upper edge of an opening of a heat insulating wall and sucked through a suction port at a lower edge of the opening.

[0002]

2. Description of the Related Art Conventionally, as shown in, for example, Japanese Utility Model Laid-Open No. 4-129084 (F25D17 / 08), a showcase of this type has a partition plate inside a heat insulating wall having a substantially U-shaped cross section. A bottom plate is provided, the inside of which constitutes a storage chamber, and a duct between the outside and the heat insulating wall. On the other hand, at the upper and lower edges of the opening of the heat insulating wall, a discharge port and a suction port communicating with the duct are formed, and a cooler is installed in the duct located on the back side and a blower is installed in the duct located below the bottom plate. Then, the cool air that has exchanged heat with the cooler is discharged from the discharge port toward the suction port by this blower, and the storage chamber is cooled while the air curtain is formed at the opening by sucking from the suction port.

Further, since the cool air sucked into the suction port entrains dust in the air, and there is a risk that foreign matter such as a price tag will fall onto the heat insulating wall below the bottom plate from the suction port. A flat filter is provided at the suction port to prevent such dust and foreign matter from entering the duct through the suction port.

[0004]

However, in such a conventional flat-plate filter, dust and the like adhere to the entire surface almost uniformly, so that when they are accumulated, the filter is clogged as a whole, and the dust is absorbed from the suction port. The problem arises that cold air cannot be sucked in.

Further, the suction port is usually covered with a suction port cover having a plurality of ventilation holes. Since the suction port cover is of a fixed type, it is usually formed on the upper surface of the heat insulating wall below the bottom plate. The only way to clean the drain receiver was to remove the bottom plate. Therefore, every time such cleaning is performed, it is necessary to remove the products displayed on the bottom plate one by one, and improvement of workability has been desired.

The present invention has been made to solve the above-mentioned conventional technical problems, and provides a showcase capable of suppressing the inconvenience of clogging of a filter provided at a suction port. With the goal.

Another object of the present invention is to smoothly clean the upper surface of the heat insulating wall below the bottom plate of the showcase.

[0008]

In the showcase 1 of the invention of claim 1, cool air is discharged from discharge ports 16 and 17 formed at the upper edge of the opening 12 of the heat insulating wall 2, and suction is formed at the lower edge of the opening 12. A suction port cover 22 for sucking in through the ports 18 and 19 and having a plurality of vent holes (slits) 21 to cover the suction ports 18 and 19, and a filter 59 attached to the suction port cover 22. The filter 59 is composed of front and rear sides 66 and 67 extending upward while being separated from each other from the lower end portion 63.

The showcase 1 according to the invention of claim 2
The partition wall 4 and the bottom plate 9 are provided inside the heat insulating wall 2 with a space therebetween to partition and form the storage chamber 11 and the duct 7, and the cooler 27 and the blower 24 are installed in the duct 7. A discharge port 16 and a suction port 18 communicating with the duct 7 are formed at the upper and lower edges of the opening 12 of the heat insulating wall 2, and the cool air that has exchanged heat with the cooler 27 is discharged from the discharge port 16 by the blower 24 to be sucked from the suction port 18. A suction port cover 22 having a plurality of ventilation holes (slits) 21 and covering the suction port 18 is detachably attached between the front end of the bottom plate 9 and the heat insulating wall 2, and is located rearward of the suction port cover 22. The extending flange 53 is configured to form a product placing surface together with the bottom plate 9.

[0010]

According to the showcase 1 of the invention of claim 1, a filter 59 is attached to the suction port cover 22 which covers the suction ports 18 and 19, and the filters 59 are separated from each other from the lower end portion 63. Since the front and rear sides 66 and 67 are extended upward, the filter 59 prevents the dust and foreign matter from entering the ducts 7 and 8 through the suction ports 18 and 19. Therefore, the ducts 7, 8
It becomes possible to prevent the entry of dust and foreign matter into the space. Further, the dust or foreign matter blocked on the upper surface of the filter 59 subsequently drops downward along the front and rear sides 66, 67 of the filter 59, so that the dust and foreign matter collect on the lower end portion 63 of the filter 59. Therefore, the entire surface of the filter 59 is less likely to be clogged with dust or foreign matter, and cold air can be sucked in favorably for a relatively long period of time.

According to the second aspect of the present invention, the suction port cover 22 for covering the suction port 18 is detachably attached between the front end of the bottom plate 9 and the heat insulating wall 2.
Since the flange 53 extending rearward from the suction port cover 22 forms a product placing surface together with the bottom plate 9, the suction port cover 2
By removing 2, the space between the front end of the bottom plate 9 and the heat insulating wall 2 is opened relatively large. Therefore, it is possible to easily clean the upper surface of the heat insulating wall 2 below the bottom plate 9 from the open portion between the front end of the bottom plate 9 and the heat insulating wall 2 without removing the bottom plate 9.

[0012]

Embodiments of the present invention will now be described in detail with reference to the drawings. 1 is a perspective view of a showcase 1 of the present invention, FIG. 2 is a vertical side view of the showcase 1, FIG. 3 is a partially cutaway perspective view of a lower portion of a heat insulating wall 2 of the showcase 1, and FIG.
FIG. 5 is an enlarged vertical side view of the showcase 1 of the 8 and 19 parts.
Shows perspective views of the suction port cover 22, respectively. The showcase 1 of the present invention comprises a heat insulating wall 2 having a substantially U-shaped cross section, and side plates 3 and 3 attached to both sides of the heat insulating wall 2. Partition plates 4 and 6 are attached to the inside of the heat insulating wall 2 at intervals respectively.
The space is defined as the inner layer duct 7, and the space between the outer partition plate 6 and the heat insulating wall 2 is defined as the outer layer duct 8.

A back partition plate 10 which constitutes the inner partition plate 4.
A bottom plate 9 is attached to the lower front of the heat insulating wall 2 with a space for a duct between the bottom wall 2A and the bottom wall 2A of the heat insulating wall 2, and the insides of the partition plate 4 and the bottom plate 9 serve as a storage chamber 11. Inner layer discharge port 16 and outer layer discharge port 1 having honeycomb materials 13 and 14 attached to the upper edge of front opening 12 of heat insulating wall 2 respectively.
7 are arranged in parallel, and the inner layer discharge port 16 and the outer layer discharge port 17 communicate with the inner layer duct 7 and the outer layer duct 8, respectively. An inner layer suction port 18 and an outer layer suction port 19 are provided side by side at the lower edge of the opening 12, and both suction ports 18, 19 are slits 21 serving as a plurality of ventilation holes (punching holes).
Is covered with a suction port cover 22 having a hole.

On the other hand, a fan case 23 is installed on the bottom wall 2A of the heat insulating wall 2 at the lower rear portion of the bottom plate 9, and a plurality of blowers 24 are attached to the fan case 23 for the inner layer and the outer layer. . The space below the bottom plate 9 is divided into two ducts by a partition member 26 (not shown in FIG. 3), and the inner layer suction port 18 passes through the inner layer blower 24 to the inner layer duct 7 and the outer layer. The suction port 19 is communicated with the outer layer duct 8 via a blower 24 for the outer layer.

A cooler 27 of a cooling device is vertically installed in the inner layer duct 7 behind the back partition plate 10. When the blower 24 for the inner layer is operated, the cold air that has exchanged heat with the cooler 27 is shown in FIG. The inside duct 7 can be lifted as indicated by the middle broken line arrow,
It is discharged from the inner layer discharge port 16 toward the inner layer suction port 18. Then, the cool air sucked from the inner layer suction port 18 is accelerated again by the blower 24. On the other hand, when the blower 24 for the outer layer is operated, the air in the outer layer duct 8 is discharged as shown in FIG.
As shown by the solid line arrow, it is raised in the outer layer duct 8 and discharged from the outer layer discharge port 17 toward the outer layer suction port 19. Then, the air sucked from the outer layer suction port 19 is accelerated again by the blower 24. As a result, a double front and rear air curtain is formed in the opening 12, and a part of the cool air curtain inside is circulated in the storage chamber 11 to cool the storage chamber 11.

Side frames 28 are located at the backs of both sides of the storage chamber 11, and a plurality of engaging holes 29 are formed at a predetermined interval on the front surface of the rear side of the side frame 28.
Rear ends of a plurality of brackets 31 ... Are detachably engaged with the engaging holes 29. It is installed. Also, the top wall 2B of the heat insulating wall 2
A reflecting plate 33 is attached to the front end, and two fluorescent lamps 36, one above the other, are attached to the reflecting plate 33 by a bracket 34.
37 is attached to the left and right, and a thermometer 38 is provided on the front surface of the reflection plate 33. And the fluorescent lamp 36,
A semi-transparent shade 39 is attached in front of 37,
The fluorescent lamps 36 and 37 are turned on to illuminate the inside of the storage chamber 11 and illuminate the front shade 39 from the rear.

On the other hand, the upper surface of the bottom wall 2A of the heat insulating wall 2 is inclined downward toward the front of the fan case 23, and the drain receiver 41 is formed at the lowermost portion thereof, and the drain receiver 41 communicates with the drain hose 42. A drain hole 43 is formed.
The frost that has grown on the cooler 27 is heated and melted by a defrost heater (not shown), but this defrost water flows down the upper surface of the bottom wall 2A, collects in the drain receiver 41, and flows into the drain hose 42 from the drain hole 43. Be discarded. Also, the inner layer suction port 1
8 and the dew condensation water flowing down from the outer layer suction port 19 are also collected in the drain receiver 41 therebelow and similarly discharged.

At the lower edge of the back partition plate 10, as shown in FIG. 3, a groove 51 having a substantially rectangular cross-section that opens forward is formed across the left and right sides. The bottom plate 9 is made of a coated steel plate, its rear edge is raised upward with a predetermined radius of curvature, and its corner is formed as a curved portion R, and the upper edge of this curved portion R is bent backward. Further, it is bent downward to form a bent portion 44. At the front edge of the bottom plate 9, there is a stepped portion 46 that is depressed downward.
The bottom plate 9 is formed by inserting the bent portion 44 of the rear portion into the groove 51 of the back partition plate 10 to engage with the bottom plate 9 and placing the left and right edges on a part of the side frame 28. It is attached above the bottom wall 2A. At this time, the step portion 46 at the front end is located above the drain receiver 41 of the bottom wall 2A.

On the other hand, the suction port cover 22 is formed by bending a stainless steel plate or the like, and a partition wall 56 projecting downward is formed at the center of the lower surface and slits 21 ... Are bored one by one and correspond to the inner and outer layer suction ports 18 and 19, respectively. The front wall 57 of the suction port cover 22 has a shape in which the lower end is bent rearward and the lower end is bent forward, and the lower portion of the rear wall 52 of the suction port cover 22 is bent rearward with a predetermined radius of curvature and its corner is formed. The portion is a curved portion R. A flange 53 that extends horizontally rearward from the curved portion R is formed, and the tip of the flange 53 is bent downward at a right angle to form a bent portion 54.
It is said that.

A filter 59 for removing dust is attached to the inside of the suction port cover 22 (FIG. 3).
(Not shown). The filter 59 is configured by stretching a net 62 in a peripheral frame 61. The filter 59 is bent in a substantially V-shape from the center in the front-rear direction, so that the lower end 63 and the lower end 63 are separated from each other. Meanwhile, front and rear sides 66 and 67 extending upward at a predetermined angle are formed. As shown in FIG. 5, the filter 59 is inserted into the suction port cover 22 so that the filter 59 can be inserted and removed from the side, and the upper end of the front side 66 is brought into contact with the inner surface of the front wall 57, and the upper end of the rear side 67 is attached to the inner surface of the rear wall 52. By holding the piece 69, the suction port cover 22
Retained within.

The suction port cover 22 having such a structure is used for the handrail 7 attached to the lower edge of the opening 12 of the heat insulating wall 2.
The front wall 57 is pressed against the bent portion 72 at the lower end of the inner surface of 1, and the left and right edges are placed on the positioning pieces 73 protruding inward from the side frame 28, and the bent portion 54 at the rear end is attached to the bottom plate 9. It is detachably attached by being placed on the stepped portion 46, and covers the inner and outer layer suction ports 18 and 19. At this time, the flange 53 of the suction port cover 22 is flush with the bottom plate 9 and forms a product mounting surface together with the bottom plate 9. Also,
As shown in FIG. 4, the partition wall 56 projects toward the partition member 26,
Front side 6 of front and rear slits 21, 21 and filter 59
6, the rear side 67 corresponds to the outer layer suction port 19 and the inner layer suction port 18, respectively.

When the blower 24 is operated with the above-described structure, cool air and air are discharged from the inner and outer layer outlets 16 and 17 toward the inner and outer layer inlets 18 and 19 to form an air curtain. After passing through the slit 21 of the cover 22 and the filter 59, it is sucked through the inner and outer layer suction ports 18 and 19. Most of the cool air or dust mixed with the air sucked at this time has front and rear sides 66, 67 of the filter 59.
Is blocked by. In addition, the slit 21 from the storage chamber 11
Foreign matter such as a price tag that has passed through and dropped into the suction port cover 22 also falls on the front and rear sides 66 and 67 of the filter 59 and is blocked. Therefore, the amount of dust and the like that enters the bottom wall 2A of the heat insulating wall 2, that is, the drain receiver 41 from the inner and outer layer suction ports 18, 19 is significantly reduced, and the labor for cleaning them is significantly reduced.

The dust or foreign matter blocked on the filter 59 falls downward along the slopes of the front and rear sides 66 and 67 and concentrates on the lower end 63. Therefore, the entire filter 59 is less likely to be clogged with dust or the like, and suction of cool air or the like from the inner and outer layer suction ports 18, 19 is ensured for a relatively long period of time. In addition, filter 5
When dust or the like is accumulated in 9, the suction port cover 22 is lifted and removed as shown by an arrow in FIG. 6, and then the filter 59 is pulled out to the side and cleaned to be discarded.

Further, when the suction port cover 22 is removed as shown in FIG. 6, the flange 53 in front of the bottom plate 9 is also removed,
Since the opening is relatively large from the handrail 71 to the bottom plate 9, by inserting a hand from this opening,
The drain receiver 41 can be easily cleaned. Therefore, the product placed on the flange 53 can be slightly moved on the rear bottom plate 9 and the drain receiver 41 can be cleaned by simply removing the suction port cover 22, so that all the products on the bottom plate 9 can be cleaned as in the conventional case. The workability is remarkably improved as compared with the case where the bottom plate 9 is removed and then cleaned.

In the embodiment, the inner and outer two-layer ducts 7 and 8 are formed and the two-layer air curtain is formed in the opening 12. However, the present invention is not limited to this, and only the duct 7 may form the one-layer air curtain. It doesn't matter.

[0026]

As described in detail above, according to the invention of claim 1, since the filter is attached to the suction port cover which covers the suction port, the filter prevents dust and foreign matter from entering the duct through the suction port. However, it becomes possible to prevent dust and foreign matter from entering the duct. In particular,
Since the filter is configured by the front and rear sides that extend upward while being separated from each other from the lower end portion, the dust or foreign matter blocked on the upper surface of the filter then falls downward along the front and rear sides of the filter. Therefore, dust and foreign matter can be collected on the lower end portion of the filter, and the entire surface of the filter can be prevented from being clogged with dust and foreign matter, thereby maintaining good suction of cold air for a relatively long period of time. You will be able to do that.

Further, according to the invention of claim 2, the suction port cover for covering the suction port is detachably attached between the front end of the bottom plate and the heat insulating wall, and the flange extending rearward from the suction port cover is the bottom plate. Since it is configured to form the product placing surface together with it, the space between the front end of the bottom plate and the heat insulating wall is relatively opened by removing the suction port cover. Therefore, it becomes possible to easily clean the upper surface of the heat insulating wall below the bottom plate than the open portion between the front end of the bottom plate and the heat insulating wall without removing the bottom plate, and the workability of cleaning the showcase is significantly improved.

[Brief description of drawings]

FIG. 1 is a perspective view of a showcase of the present invention.

FIG. 2 is a vertical sectional side view of the showcase of the present invention.

FIG. 3 is a partially cutaway perspective view of a lower portion of the heat insulating wall of the showcase of the present invention.

FIG. 4 is an enlarged vertical side view of the inner and outer layer suction port portions of the showcase of the present invention.

FIG. 5 is a perspective view of a suction port cover of the showcase of the present invention.

FIG. 6 is an enlarged vertical sectional side view of the inner and outer layer suction port portions of the showcase of the present invention with the suction port cover removed.

[Explanation of symbols]

 1 Showcase 2 Insulation Wall 4 Partition Plate 7 Inner Layer Duct 8 Outer Layer Duct 9 Bottom Plate 11 Storage Room 18 Inner Layer Suction Port 19 Outer Layer Suction Port 21 Slit 22 Suction Port Cover 53 Flange 59 Filter 63 Lower End 66 Front Side 67 Rear Side

Claims (2)

[Claims] 1. A showcase in which cool air is discharged from a discharge opening formed at an upper edge of an opening of a heat insulating wall and is sucked from a suction opening formed at a lower edge of the opening, and a plurality of ventilation holes are provided to cover the suction opening. A suction port cover and a filter attached to the suction port cover are provided.
A showcase characterized by comprising front and rear sides that extend upward while being separated from each other from the lower end. 2. A storage chamber and a duct are partitioned and formed by providing a partition plate and a bottom plate inside the heat insulating wall with a space therebetween.
A cooler and a blower are installed in the duct, and a discharge port and a suction port, which communicate with the duct, are formed at the upper and lower edges of the opening of the heat insulating wall, respectively, and cool air exchanged with the cooler is blown by the blower. In a showcase that discharges from a discharge port and sucks from the suction port, a suction port cover that has a plurality of ventilation holes and covers the suction port is detachably attached between the front end of the bottom plate and the heat insulating wall, and the suction port cover. A showcase, wherein a flange extending further rearward is configured to form a product placing surface together with the bottom plate.