JP6706833B2 - Showcase - Google Patents

Description

The present invention relates to a showcase for displaying products in a display room having a front opening, and more particularly to a showcase having a cool air curtain and a room temperature air curtain formed in a front opening.

Conventionally, open showcases installed in convenience stores and supermarkets are composed of a heat insulating wall with a substantially U-shaped cross section and side plates attached to the side surfaces of this heat insulating wall. By partitioning with a partition, a duct and a display room with a front opening are formed. A shelf for displaying products is installed in the display room, and an evaporator is arranged in the duct. The cool air cooled by this evaporator is discharged from the cool air discharge port at the upper edge of the front opening and By sucking air from the cold air suction port at the edge, an air curtain of cold air is formed at the opening (for example, see Patent Document 1).

Further, there is also one in which an outer layer discharge port is formed in front of the cool air discharge port and air is discharged from this outer layer discharge port to form a protective air curtain on the front side of the cool air curtain.

JP, 2012-161345, A

In such an open showcase, since the front of the display room is open, the customer can easily take out the product, and the effect of selling the product is extremely high, but the cold air leakage from the display room is remarkable. There is a problem. In order to prevent this, an air curtain with cold air is formed in the front opening, but it is unavoidable that cold air leaks and outside air intrudes, resulting in a decrease in cooling effect and an increase in power consumption. There was a problem.

Therefore, in Patent Document 1, the door can be attached to the front opening of the open showcase. By attaching a door and opening and closing the opening, it is possible to prevent or reduce leakage of cold air and invasion of outside air.
However, when the door is attached, there is a problem that dew condensation occurs on the door due to the temperature difference between the inside and the outside of the refrigerator. In particular, cold air in the refrigerator is likely to collect downward, and since the hinge mechanism that supports the door is usually made of a material with high thermal conductivity such as metal, the hinge mechanism can be cooled by cold air. However, there is a problem that dew condensation is more likely to occur.

The present invention has been made in view of the above points, and an object thereof is to provide a showcase capable of preventing dew condensation on a door.

To achieve the above object, the present invention provides a heat insulating wall having a substantially U-shaped cross section, a side plate attached to a side surface of the heat insulating wall, a display room having a front opening formed in the heat insulating wall, and the front surface. In a showcase provided with a door that opens and closes an opening, a lower door holding member that holds a lower portion of the door of the door unit and receives condensed water adhering to the door, and the door can be opened and closed freely A lower hinge member that supports the door unit, and a lower frame that supports the door unit has a rising member whose upper end is located above the upper end of the lower door holding member. In a state where the door is closed, a shielding member is provided which is in contact with the door and is located above the upper end of the lower door holding member.

Further, in the above configuration, a cool air discharge port that is provided at an upper front end of the front opening and discharges cool air inside the door, and a room temperature outside the door that is provided in front of the cool air discharge port of the front opening. And a room temperature air discharge port for discharging air.

Further, in the above structure, the shielding member is made of a resin packing.

Further, in the above structure, a blower guide for guiding the room temperature air to the outside of the door is provided near the room temperature air outlet.

According to the present invention, the rising member is provided, and the rising member is provided with the shielding member so that the cold air in the refrigerator does not reach the lower door holding member when the door is closed. The lower door holding member can be prevented from being cooled more than necessary. As a result, it is possible to prevent the occurrence of dew condensation due to the cooling of the lower door holding member. In particular, by shielding cold air that tends to stay downward, it is effective in preventing dew condensation below the door.

It is a front view showing an embodiment of a showcase concerning the present invention. It is a side surface sectional view of this embodiment. It is an expanded front sectional view of the upper part of this embodiment. It is a perspective view at the time of seeing from the upper part in the state where the door was opened. It is a perspective view which shows the lower part of a door in the state which opened the door. It is a one part perspective view which shows a lower hinge member and a lower door holding member. It is a perspective view part of a lower hinge member. It is an exploded perspective view of a door, a lower hinge member, and a lower door holding member. It is explanatory drawing which shows the flow of dew condensation water by a lower door holding member and a lower hinge member. It is explanatory drawing which shows the flow of dew condensation water by a lower hinge member and a lower frame. It is explanatory drawing which shows the flow of the cool air below a door.

Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is a front view showing an embodiment of a showcase according to the present invention. 2 is a side sectional view of the showcase of the present embodiment, and FIG. 3 is an enlarged front sectional view of the upper portion of the showcase of the present embodiment.
The showcase 1 of this embodiment is installed in a store such as a convenience store or a supermarket.

As shown in FIG. 1, the showcase 1 includes a heat-insulating wall 10 having a substantially U-shaped cross section and a front surface that is open and covers the upper surface, the back surface, and the lower surface. It is composed of a side plate 11. Inside the heat insulating wall 10, an inner panel 12 is provided so as to have a predetermined gap with respect to the heat insulating wall 10.
A bottom plate 14 extending toward the front opening 13 is integrally attached to the lower end of the inner panel 12, and the inside of the inner panel 12 and the bottom plate 14 is a display room 15 having the front opening 13. ..
The space between the inner panel 12 and the bottom plate 14 and the heat insulating wall 10 serves as a cool air duct 18.

Further, inside the display room 15, a pair of brackets 20 are detachably attached to columns (not shown) provided on the front side of the inner panel 12 located on the back side of the display room 15, and the brackets 20 are instructed. A plurality of shelves 21 are installed. The product is displayed on the upper surface of the shelf 21.
Further, the shelf board 21 can be pulled out forward, so that when replenishing the upper surface of the shelf board 21 with products, the shelf board 21 can be pulled out forward from the front opening 13 of the display room 15 to perform work. It is configured.

Further, a canopy 23 is attached to the upper front end portion of the inner panel 12 over the entire width of the front opening 13, and an illumination lamp 24 for illuminating the inside of the display room 15 is attached to the inside of the canopy 23.
An upper panel 25 that covers the upper side of the front opening 13 of the display room 15 is attached to the front side of the canopy 23, and a thermometer 26 for displaying the internal temperature of the display room 15 is attached to the upper panel 25. Has been.

Further, at the front end of the canopy 23 and on the rear side of the illuminating lamp 24, a cold air discharge port 30 that communicates with the cool air duct 18 and blows the cool air inside the cold air duct 18 to the display chamber 15 is formed. Further, a cold air suction port 31 communicating with the cold air duct 18 is formed at the front end portion of the bottom plate 14.
An evaporator 32 of a cooling device is provided inside the cool air duct 18 on the back side of the inner panel 12, and a cool air blower 33 is provided inside the cool air duct 18 above the evaporator 32. Is installed.

In addition, a duct 19 for room temperature air is formed on the upper surface of the heat insulating wall 10. The room temperature air duct 19 is formed with a room temperature air discharge port 34 communicating with the room temperature air duct 19 on the front surface side of a door described later. A room-temperature air suction port 35 is formed behind the room-temperature air duct 19, and a room-temperature air blower 36 is installed inside the room-temperature air duct 19.
Further, in the present embodiment, a blower guide 37 that guides the room temperature air discharged from the room temperature air discharge port 34 to the surface of the door is provided at the room temperature air discharge port 34 portion.

By driving the cool air blower 33, the cool air that has exchanged heat with the evaporator 32 rises inside the cool air duct 18 and is discharged from the cool air discharge port 30 toward the front opening 13. The cool air discharged to the front opening 13 is sucked into the cool air duct 18 from the cool air suction port 31, whereby an air curtain of cool air is formed in the front opening 13 and one of the cool air curtains The parts are circulated inside the display room 15.
In addition, a cold air outlet (not shown) is formed in the inner panel 12, and the inside of the display chamber 15 is cooled to a predetermined temperature by a part of the air curtain of the cool air and the cool air blown out from these cold air outlets.

On the other hand, by driving the blower 36 for room temperature air, the air inside the duct 19 for room temperature air passes through the duct 19 for room temperature air and is discharged from the room temperature air outlet 34. Then, the room-temperature air discharged from the room-temperature air discharge port 34 is guided by the blower guide 37 and blown toward the surface of the door 42.
As a result, an air curtain of cold air is formed by the cool air discharge port 30 and the cool air suction port 31 on the display chamber 15 side of the door unit 40, and the room temperature air discharge port 34 and the room temperature air are provided outside the door unit 40. An air curtain of room temperature air is formed by the suction port 35.

An upper frame 45 extending along the upper end is attached to the upper end of the front opening 13, and a lower frame 46 extending along the lower end is attached to the lower end of the front opening 13.

Further, in the present embodiment, as shown in FIGS. 1 and 2, a door unit 40 is attached to the front opening 13 of the showcase 1.
The door unit 40 includes a pair of left and right doors 42 and 42 made of transparent plate glass, a hinge mechanism 43 that supports the respective doors 42 so as to be openable and closable, and a stay 44 that connects the upper frame 45 and the door 42. It is configured.

The door 42 is attached to the upper frame 45 and the lower frame 46 by a hinge mechanism 43 that rotatably supports the door 42. The door 42 is formed of a glass plate having a substantially rectangular shape when viewed from the front.
In the present embodiment, each door 42 has hinge mechanisms 43 attached to the upper and lower edges of both sides of the front opening 13 and the upper and lower edges of the central portion of the front opening 13, respectively. The pair of left and right doors 42 of the display room 15 are double-opening doors 42 that open to both sides.
A handle 48 is attached to the central portion of the door 42.
The door 42 may be made of a transparent glass plate or another material such as an acrylic plate.

FIG. 4 is a perspective view when the door 42 is opened and viewed from above. As shown in FIG. 4, the hinge mechanism 43 has a substantially U-shaped cross section and includes an upper door holding member 50 and a lower door holding member 51 that sandwich and support the upper and lower ends of the door 42, respectively. The upper door holding member 50 and the lower door holding member 51 are made of, for example, metal.
The base of the upper door holding member 50 is integrally provided with a support shaft 53 that engages with a support hole (not shown) formed in the upper frame 45. Then, in a state where the door 42 is supported by the support portion 52, the door 42 is rotatable about the support shaft 53.

Next, the upper hinge mechanism will be described in detail.
As shown in FIG. 4, a stay 44 is connected between the lower surface of the upper frame 45 and the upper surface of the door holding member 50.
The stay 44 has a long stay frame 60 having one end connected to the upper frame 45 and a hollow inside, and one end connected to the door holding member 50, and the other end sliding inside the stay frame 60. And a long stay movable member 61 that can be freely inserted.
A stopper mechanism 62 is attached to the insertion end of the stay movable member 61 of the stay frame 60 from above the stay frame 60. The stopper mechanism 62 includes a stopper (not shown) that is spring-biased toward the inside of the stay frame 60.

A sliding groove 63 that extends in the length direction of the stay movable member 61 and is engaged with a stopper is formed in the center portion of the stay movable member 61 in the width direction.
Further, a stopper holding portion (not shown) with which a stopper is engaged is formed on the extension of the sliding groove 63 of the stay movable member 61 in the longitudinal direction. In the present embodiment, for example, this stopper holding portion is engaged with the position where the stopper is engaged when the door 42 is opened at an angle of 75 degrees, and the stopper is engaged when the door 42 is opened at an angle of 90 degrees. It is formed in each position.

With this configuration, when the door 42 is opened from the closed state, the stopper moves inside the stay frame 60 while the stopper engages with the sliding groove 63 of the stay movable member 61. Since it is slidable, the door 42 can be opened without resistance until the stopper reaches the end of the sliding groove 63.
If the door 42 is further opened while the stopper has moved to the end of the sliding groove 63, the stopper gets over the sliding groove 63 and engages with the stopper holding portion. In this state, the door 42 is held open at 75 degrees. Then, when the door 42 is further opened, the stopper rides over the stopper holding portion and engages with the adjacent stopper holding portion. In this state, the door 42 is held open at 90 degrees.

In this embodiment, the stopper holding portion is provided at the position for holding the door 42 in the open state at 75 degrees and 90 degrees. However, the formation position and the number of the stopper holding portions may be changed as necessary. Can be set arbitrarily.

In addition, a connection releasing mechanism 64 is provided at the tip of the stay movable member 61 to release the connection when a predetermined pressure or more is applied. The connection releasing mechanism 64 includes a stay connecting member 65 that is attached to the door holding member 50 and has a hollow inside. The stay connecting member 65 has a pin 66 penetrating the connecting member on the upper surface of the door holding member 50. It is fixed.
At the tip of the stay movable member 61, a pair of bifurcated connecting pieces 67 are formed so as to be located on both sides of the pin 66, and the surfaces of the tip ends of the connecting pieces 67 facing each other are: Claws 68 projecting inward are formed respectively.

In the normal state, the stay connecting member 65 and the stay movable member 61 are held in a connected state by being engaged with the pin 66 by the claw 68 of the connecting piece 67.
When the door 42 is opened at an angle of 90 degrees and a force is further applied in the opening direction, the tab 68 of the connecting piece 67 and the pin 66 are disengaged from each other, whereby the stay movable member is released. The connection between 61 and the stay connecting member 65 is released.

Next, the lower hinge mechanism 43 will be described in detail.
FIG. 5 is a perspective view showing the lower side of the door with the door opened. FIG. 6 is a partial perspective view showing the lower hinge member and the lower door holding member. FIG. 7 is a perspective view of the lower hinge member. FIG. 8 is an exploded perspective view of the door, the lower hinge member, and the lower door holding member. FIG. 9 is an explanatory diagram showing the flow of dew condensation water by the lower door holding member and the lower hinge member. FIG. 10: is explanatory drawing which shows the flow of dew condensation water by a lower hinge member and a lower frame. FIG. 11 is an explanatory diagram showing the flow of cold air below the door.

As shown in FIGS. 5 and 6, the lower hinge mechanism 43 includes a lower hinge member 70.
As shown in FIG. 7, the lower hinge member 70 includes a lower hinge portion 71 and a lower door support portion 72. The lower hinge portion 71 is formed in a substantially columnar shape, and a support shaft 73 engaged with a support hole (not shown) formed in the lower frame 46 is integrally provided on the lower surface of the lower hinge portion 71. ..
The lower door support portion 72 is formed in an elongated plate shape extending in the radial direction from the peripheral surface of the lower hinge portion 71. The upper surface of the lower hinge portion 71 and the upper surface of the lower door support portion 72 are formed flush with each other, and the upper surface of the lower hinge portion 71 has a guide that is inclined downward from the central portion toward the outer periphery. A groove 74 is formed. A portion of the guide groove 74 located on the outer periphery of the lower hinge portion 71 is a water drop portion 75.

The guide groove 74 is formed at an angle of approximately 45° with respect to the extension line of the lower door support portion 72, which is between the angle when the door 42 is fully closed and the angle when the door 42 is fully opened. ..
The guide groove 74 is not limited to this. For example, in a state where the door 42 is fully closed and a state where the door 42 is fully closed, if the water drop portion 75 of the guide groove 74 is always located above the lower frame 46, it may be formed at any position. Alternatively, the guide groove 74 may be formed in a fan shape in plan view.

Further, as shown in FIG. 8, the lower door holding member 51 includes a pair of holding members 76, 76 having a substantially L-shaped cross section that is attached from the front surface and the back surface of the door 42. Each holding member 76 is formed in a substantially U-shaped cross-section when attached to the door 42.
A water guide plate 77 is provided inside the lower door holding member 51, and as shown in FIG. 9, the water guide plate 77 is lowered from the tip side of the door 42 toward the lower hinge portion 71. It is provided with an inclined surface 78 inclined.
In addition, a gap is formed between each holding member 76 and the surface of the door 42, and the dew condensation water attached to the door 42 drops through the gap 79 between the holding member 76 and the door 42, and The inclined surface 78 of the guide plate 77 is configured to flow toward the guide groove 74 of the lower hinge portion 71.

As shown in FIG. 10, inside the compartment and outside the compartment of the lower frame 46 are formed with an inside slit 80 and an outside slit 81 for allowing condensed water to drop. Further, on the upper surface of the lower frame 46, an inclined surface 82 is formed so as to decrease from the drop position of the condensed water by the guide groove 74 of the lower hinge portion 71 toward the inside of the refrigerator.
Then, the condensed water that has dropped from the guide groove 74 of the lower hinge portion 71 to the upper surface of the lower frame 46 drops from the inside slit 80 into the machine room by the inclined surface 82 of the lower frame 46 and flows into the machine room. It is configured to be stored in an installed drain pan (not shown). Further, a part of the condensed water that has dropped onto the upper surface of the lower frame 46 drops from the outside slit 81 of the refrigerator, and similarly flows into the machine room through the gap 83 formed on the lower surface side of the lower frame 46, and the drain pan. Is stored in.
In addition, in the present embodiment, the outside slit 81 is formed, but the outside slit 81 may be omitted if at least the inside slit 80 is formed.

In addition, in the present embodiment, as shown in FIGS. 5 and 11, a rising member 85 is provided inside the door 42 of the lower frame 46 inside the refrigerator. The rising member 85 is formed such that the upper edge thereof is located above the lower lower door holding member 51. On the door 42 side of the rising member 85, a packing 86 made of resin such as rubber is attached as a shielding member.
In the present embodiment, the packing 86 and the door 42 are configured to come into contact with each other when the door 42 is closed, so that cold air in the refrigerator is prevented from flowing to the lower door holding member 51. Is configured.

Next, the operation of this embodiment will be described.
In this embodiment, since the front opening 13 is covered by the door unit 40, the inside and outside of the display room 15 can be completely shut off, and the temperature inside the display room 15 can be kept constant. It can be held and the cooling efficiency can be improved.
In this case, in this embodiment, the cool air discharge port 30 is arranged inside the display chamber 15 of the door unit 40, and the room temperature air discharge port 34 is arranged outside the door unit 40. Similarly, the cold air suction port 31 is arranged on the display room 15 side of the door unit 40, and the room temperature air suction port 35 is arranged outside the door unit 40.
Therefore, an air curtain of cool air is formed by the cool air discharge port 30 and the cool air suction port 31 inside the display chamber 15 of the door unit 40, and the room temperature air discharge port 34 and the room temperature air are formed outside the door unit 40. An air curtain of normal temperature air is formed by the air suction port 35.

Generally, when the door 42 is installed, the cold air curtain is formed inside the display room 15 as described above, and the inner surface of the door 42 is always exposed to the cool air. Moreover, the structure is such that the cool air is sucked in through the cool air suction port 31, and since the cool air is likely to be accumulated in the lower part, the inner lower part of the door 42 tends to be most easily cooled.
Therefore, in the state as it is, the lower temperature of the outer side surface of the door 42 is lower than that of the outside air, so that dew condensation is likely to occur.

However, in the present embodiment, the rising member 85 is provided, and the packing 86 is provided on the rising member 85 to prevent the cold air in the refrigerator from reaching the lower door holding member 51 with the door 42 closed. Therefore, it is possible to prevent the lower door holding member 51 made of metal from being cooled more than necessary.
Moreover, since an air curtain of room temperature air can be formed on the outside of the door unit 40, room temperature air can be constantly applied to the outside surface of the door 42, and dew condensation on the outside surface of the door 42 can be prevented. ..

Although it is possible to prevent dew condensation as described above, if dew condensation occurs on the door 42, the dew condensation water travels down the door 42 and drops downward. Can receive water. Therefore, even when the door 42 is open, the dew condensation water can be received by the lower door holding member 51. Therefore, when the door 42 is opened, it is possible to reliably prevent the dew condensation water from falling on the floor or the like. You can
Then, the condensed water received by the lower door holding member 51 flows toward the lower hinge portion 71 along the inclined surface 78, and is dropped onto the lower frame 46 by the guide groove 74 of the lower hinge portion 71. The condensed water dropped on the lower frame 46 is stored in the drain pan of the machine room through the inside slit 80 and the outside slit 81.

As described above, in the present embodiment, the lower door holding member 51 that holds the lower portion of the door 42 of the door unit 40 and receives the dew condensation water adhering to the door 42, and the lower hinge that supports the door 42 in an openable and closable manner. The lower frame 46 that supports the door unit 40 is provided with a rising member 85. The rising member 85 abuts the door 42 in the closed state of the door 42 and is lower than the lower door holding member 51. The packing 86 (shielding member) located above is provided.
According to this, since the rising member 85 is provided and the packing 86 is provided on the rising member 85, the cold air in the refrigerator is prevented from reaching the lower door holding member 51 when the door 42 is closed. It is possible to prevent the lower door holding member 51 made of metal from being cooled more than necessary. As a result, it is possible to prevent the occurrence of dew condensation due to the cooling of the lower door holding member 51. In particular, by shielding cold air that tends to stay downward, it is effective in preventing dew condensation below the door 42.

Further, in the present embodiment, the cold air discharge port 30 provided at the upper front end of the front opening 13 for discharging cool air to the inside of the door 42, and the cold air discharge port 30 provided in front of the cold air discharge port 30 of the front opening 13 for the door 42. A room temperature air discharge port 34 for discharging room temperature air is provided on the outside.
According to this, an air curtain of cool air is formed by the cool air discharge port 30 inside the display chamber 15 of the door unit 40, and ambient air by the room temperature air discharge port 34 is formed outside the door unit 40. Since the air curtain can be formed, room temperature air can be constantly applied to the outer surface of the door 42, and dew condensation on the outer surface of the door 42 can be prevented.

Further, in the present embodiment, the packing 86 is made of resin.
According to this, since the packing 86 is made of resin, the packing 86 and the door 42 can be brought into close contact with each other, and the cold air in the refrigerator does not reach the lower door holding member 51 when the door 42 is closed. Can be shielded.

Further, in the present embodiment, a blower guide for guiding the room temperature air to the outside of the door is provided near the room temperature air discharge port.
According to this, since the room-temperature air can be guided to the outside of the door by the air guide, the room-temperature air can be efficiently applied to the door and dew condensation on the door can be prevented.

The present invention is not limited to those described in the above embodiments, and various modifications and applications are possible without departing from the spirit of the present invention.

1 Showcase 10 Insulation Wall 11 Side Plate 12 Inner Panel 13 Front Opening 14 Bottom Plate 15 Display Room 18 Cold Air Duct 19 Room Temperature Air Duct 21 Shelf Board 30 Cold Air Discharge Port 31 Cold Air Suction Port 33 Cold Air Blower 34 Room Temperature Air Discharge Port 35 Room Temperature Air inlet 36 Air blower 37 for normal temperature air 37 Air guide 40 Door unit 41 Frame 42 Door 43 Hinge mechanism 44 Stay 45 Upper frame 46 Lower frame 47 Vertical frame 50 Upper door holding member 51 Lower door holding member 70 Lower hinge member 71 Lower hinge part 72 Lower Door Supporting Part 74 Guide Groove 77 Water Guide Plate 78 Inclined Surface 80 Internal Slit 81 Internal Outer Slit 82 Inclined Surface 85 Standup Member 86 Packing

Claims (4)

A heat insulating wall having a substantially U-shaped cross section, a side plate attached to a side surface of the heat insulating wall, a display room having a front opening formed in the heat insulating wall, and a door unit having a door for opening and closing the front opening, In the prepared showcase,
A lower door holding member that holds the lower portion of the door of the door unit and receives condensed water attached to the door; and a lower hinge member that supports the door so as to be openable and closable,
A lower frame supporting the door unit is provided with a rising member whose upper end is located above the upper end of the lower door holding member, and the rising member contacts the door in a closed state. A showcase comprising a shielding member which is in contact with and is located above an upper end of the lower door holding member. A cold air discharge port provided at the upper front end of the front opening for discharging cold air to the inside of the door, and a room temperature air provided in front of the cold air discharge port of the front opening for discharging room temperature air to the outside of the door. The showcase according to claim 1, further comprising a discharge port. The showcase according to claim 1 or 2, wherein the shielding member is made of resin packing. The showcase according to any one of claims 1 to 3, wherein a blower guide that guides the room temperature air to the outside of the door is provided near the room temperature air discharge port. .

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