JP2017109056A - Showcase - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a showcase that can prevent dew condensation water attached to doors from falling to a floor or the like and can collect the dew condensation water into an inner part.SOLUTION: A showcase comprises a heat insulating wall 10 having a nearly U-shaped cross section, side plates 11 attached to side surfaces of the heat insulating wall 10, a showroom 15 formed in the heat insulating wall and including a front opening 13, and a door unit 40 including doors 42 for opening/closing the front opening 13, and comprises lower door holding members 51 for holding lower parts of the doors 42 of the door unit 40 and receiving dew condensation water attached to the doors 42, and lower hinge members 70 for supporting the doors 42 in a freely openable/closable manner. The lower hinge members 70 comprise guide grooves 74 for guiding the dew condensation water to a lower frame 46.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a showcase for displaying merchandise in a display room having a front opening, and particularly relates to a showcase in which a cold air curtain and a room temperature air curtain are formed in a front opening.

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

  In some cases, an outer layer discharge port is formed in front of the cold air discharge port, and air is discharged from the outer layer discharge port to form a protective air curtain on the front side of the cold air curtain.

JP 2012-161345 A

  In such an open showcase, since the front of the display room is open, it is easy for the customer to take out the product, and the effect on sales of the product is extremely high, but cold air leakage from the display room is significant. 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 air leaks and outside air enters, leading to 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 the door so that the opening can be opened and closed, leakage of cold air and intrusion of outside air can be prevented or reduced.
However, when the door is attached, there is a problem that condensation occurs on the door due to a temperature difference between the inside and the outside of the warehouse. For this reason, if the door is opened with condensation on the door, the condensed water may fall from the door onto the floor, etc., which may cause dirt or the customer to slip. Have.

  The present invention has been made in view of the foregoing points, and provides a showcase capable of preventing the condensed water adhering to the door from falling onto a floor and the like and collecting the condensed water inside. With the goal.

  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 chamber formed in the heat insulating wall and having a front opening, and the front surface. In a showcase provided with a door unit having a door for opening and closing an opening, a door holding member that holds the lower part of the door of the door unit and receives condensed water attached to the door, and the door can be opened and closed freely And a lower hinge member for supporting, wherein the lower hinge member includes a guide groove for guiding condensed water to the lower frame.

  Moreover, the said structure WHEREIN: The water guide board provided with the inclined surface which guides condensed water to the said lower hinge member is provided inside the said lower door holding member, It is characterized by the above-mentioned.

  Further, in the above-described configuration, an inner slit for sending condensed water to a drain pan is provided on the inner side of the lower frame, and the lower frame includes an inclined surface that guides the condensed water to the inner slit. And

  Further, in the above configuration, an outside slit for sending condensed water to a drain pan is provided on the outside of the lower frame, and the lower frame has an inclined surface for guiding the condensed water to the outside slit. And

  In the above configuration, the guide groove is formed at a position where the dew condensation water by the guide groove flows above the lower frame when the door is fully closed and when the door is fully closed. It is characterized by.

  According to the present invention, because the condensed water received by the door holding member is guided to the lower frame by the guide groove of the lower hinge member, even when the door is opened in the state where condensation has adhered to the door, It is possible to reliably prevent the condensed water from falling from the door onto the floor or the like, and the condensed water that has dropped onto the lower frame can be collected in the drain pan of the machine room.

It is a front view which shows embodiment of the showcase which concerns on this invention. It is side surface sectional drawing of this embodiment. It is an expanded sectional view of the upper part front of this embodiment. It is a perspective view at the time of seeing from upper direction in the state which opened the door. It is a perspective view which shows the downward direction of a door in the state which opened the door. It is a partial 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 a disassembled perspective view of a door, a lower hinge member, and a lower door holding member. It is explanatory drawing which shows the flow of the dew condensation water by a lower door holding member and a lower hinge member. It is explanatory drawing which shows the flow of the dew condensation water by a lower hinge member and a lower frame. It is explanatory drawing which shows the flow of the cool air in the lower part of 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. FIG. 2 is a side sectional view of the showcase of this embodiment, and FIG. 3 is an enlarged sectional view of the upper front of the showcase of this 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, a showcase 1 has a heat insulating wall 10 having a substantially U-shaped cross section that opens at the front and covers the upper surface, the back surface, and the lower surface. The side plate 11 is comprised. An inner panel 12 is provided inside the heat insulating wall 10 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 serves as a display chamber 15 having the front opening 13. .
A space between the inner panel 12 and the bottom plate 14 and the heat insulating wall 10 is a cool air duct 18.

Further, inside the display chamber 15, a pair of brackets 20 that are detachably attached to a support column (not shown) provided on the front side of the inner panel 12 located on the back side of the display chamber 15, and the bracket 20 is instructed. A plurality of shelves 21 are installed. And it is set as the structure by which goods are displayed on the upper surface of the shelf board 21. FIG.
Further, the shelf board 21 can be pulled out forward, and when a product is replenished to the upper surface of the shelf board 21, it can be pulled out forward from the front opening 13 of the display chamber 15 so that the work can be performed. 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 that illuminates the inside of the display chamber 15 is attached to the inside of the canopy 23.
An upper panel 25 is attached to the front side of the canopy 23 so as to cover the upper side of the front opening 13 of the display chamber 15, and a thermometer 26 for displaying the internal temperature of the display chamber 15 is attached to the upper panel 25. It 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 cold air duct 18 and blows out the cold 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.
In addition, an evaporator 32 of a cooling device is disposed 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.

A room temperature air duct 19 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 outlet 34 communicating with the room temperature air duct 19 on the front side of the door described later. A room temperature air inlet 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.
In the present embodiment, the room temperature air discharge port 34 is provided with a blowing guide 37 that guides room temperature air discharged from the room temperature air discharge port 34 to the surface of the door.

Then, by driving the cool air blower 33, the cool air exchanged 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, thereby forming an air curtain by the cool air in the front opening 13, and one of the cool air air curtains. The part is circulated inside the display chamber 15.
The inner panel 12 has a cold air outlet (not shown), and the inside of the display chamber 15 is cooled to a predetermined temperature by a part of the cold air curtain and the cold air blown out from the cold air outlet.

On the other hand, by driving the room temperature air blower 36, the air inside the room temperature air duct 19 is discharged from the room temperature air discharge port 34 through the room temperature air duct 19. The room temperature air discharged from the room temperature air discharge port 34 is guided by the air blowing guide 37 and blown toward the surface of the door 42.
As a result, a cold air curtain is formed by the cold air discharge port 30 and the cold 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 formed outside the door unit 40. An air curtain of normal 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.

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 doors 42 and 42 made of transparent plate glass, left and right, a hinge mechanism 43 that supports the doors 42 so as to be opened and closed, 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 configured by a substantially rectangular glass plate when viewed from the front.
In the present embodiment, each door 42 has hinge mechanisms 43 attached to upper and lower edges at both sides of the front opening 13 and upper and lower edges at the center of the front opening 13, respectively. The pair of doors 42 on the left and right sides of the display chamber 15 are double doors 42 that open on both sides.
A handle 48 is attached to the central portion of the door 42.
In addition to the transparent glass plate, other materials such as an acrylic plate can be used as the door 42.

FIG. 4 is a perspective view when viewed from above with the door 42 opened. 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 are supported with the upper and lower ends of the door 42 interposed therebetween. The upper door holding member 50 and the lower door holding member 51 are made of, for example, metal.
A support shaft 53 that is engaged with a support hole (not shown) formed in the upper frame 45 is integrally provided at the base portion of the upper door holding member 50. Then, the door 42 is supported by the support portion 52 and 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 with 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 slid inside the stay frame 60. It is comprised from the elongate stay movable member 61 inserted freely.
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 slide groove 63 that extends in the length direction of the stay movable member 61 and engages with a stopper is formed at the center in the width direction of the stay movable member 61.
Further, on the extension of the sliding groove 63 of the stay movable member 61 in the longitudinal direction, a stopper holding portion (not shown) with which the stopper is engaged is formed. In this embodiment, for example, the stopper holding portion is engaged with the stopper when the door 42 is opened at an angle of 75 degrees and the stopper 42 is engaged when the door 42 is opened at an angle of 90 degrees. Each is formed at a position.

With this configuration, when the door 42 is opened from the closed state, the stay movable member 61 is located inside the stay frame 60 while the stopper is engaged 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.
When the door 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 in an open state at 75 degrees. When the door 42 is further opened, the stopper gets over the stopper holding portion and engages with the adjacent stopper holding portion. In this state, the door 42 is held in an open state at 90 degrees.

  In this embodiment, the stopper holding portion is provided at a position where the door 42 is held open at 75 degrees and 90 degrees. However, the position and number of the stopper holding portions may be set as necessary. Can be set arbitrarily.

In addition, a connection release 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 release mechanism 64 includes a stay connection member 65 that is attached to the door holding member 50 and has a hollow inside. The stay connection member 65 is connected to the upper surface of the door holding member 50 via a pin 66 that penetrates the connection member. Is fixed.
A pair of connecting pieces 67 that are bifurcated so as to be positioned on both sides of the pin 66 are formed at the distal end of the stay movable member 61. Claws 68 projecting inward are formed.

In the normal state, the stay connecting member 65 and the stay movable member 61 are held in a state of being connected to each other by being engaged with the pin 66 by the claw 68 of the connecting piece 67.
Then, when a force is further applied in the opening direction from the state in which the door 42 is opened at an angle of 90 degrees, the engagement between the tab 68 of the connecting piece 67 and the pin 66 is released, thereby the stay movable member. 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 part 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 view showing the flow of condensed water by the lower door holding member and the lower hinge member. FIG. 10 is an explanatory view showing the flow of condensed water by the lower hinge member and the lower frame. FIG. 11 is an explanatory diagram showing the flow of cool 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 cylindrical shape, and a support shaft 73 that is 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 a long 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 is inclined so as to become lower 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 dropping portion 75.

The formation direction of 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 that is between the angle when the door 42 is fully closed and the angle when the door 42 is fully open. .
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 dropping portion 75 of the guide groove 74 is always located above the lower frame 46, it should 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 and 76 having a substantially L-shaped cross-section attached from the front and back surfaces 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. As shown in FIG. 9, the water guide plate 77 is lowered from the front end side of the door 42 toward the lower hinge portion 71. An inclined surface 78 is provided.
Further, a gap is formed between each holding member 76 and the surface of the door 42, and the condensed water adhering to the door 42 falls through a gap 79 between the holding member 76 and the door 42, 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, a warehouse inner slit 80 and a warehouse outer slit 81 for dropping condensed water are formed on the inner side and the outer side of the lower frame 46, respectively. In addition, an inclined surface 82 is formed on the upper surface of the lower frame 46 so as to become lower toward the inner side from the position where the condensed water is dropped by the guide groove 74 of the lower hinge portion 71.
The condensed water that has dropped from the guide groove 74 of the lower hinge portion 71 onto the upper surface of the lower frame 46 falls from the inner slit 80 by the inclined surface 82 of the lower frame 46 and flows into the machine room. It is configured to be stored in a drain pan (not shown) installed. Further, a part of the condensed water that has fallen on the upper surface of the lower frame 46 falls from the outside slit 81 and similarly flows into the machine room via the gap 83 formed on the lower surface side of the lower frame 46, so that the drain pan Accumulated.
In this embodiment, the outer slit 81 is formed. However, the outer slit 81 may be omitted if at least the inner slit 80 is formed.

In the present embodiment, as shown in FIGS. 5 and 11, a rising member 85 is provided on the inner side of the door 42 of the lower frame 46. The rising member 85 is formed such that its upper edge is positioned above the lower lower door holding member 51. A packing 86 made of a resin such as rubber as a shielding member is affixed to the door 42 side of the rising member 85.
In the present embodiment, the packing 86 and the door 42 are configured to contact each other with the door 42 closed, thereby preventing the cool air in the warehouse from flowing to the lower door holding member 51. It is configured.

Next, the operation of this embodiment will be described.
In this embodiment, since it is comprised so that the front opening 13 may be coat | covered with the door unit 40, the inside and the exterior of the display chamber 15 can be interrupted | blocked completely, and the temperature inside the display chamber 15 is made constant. It can hold | maintain and can improve cooling efficiency.
In this case, in the present embodiment, the cold air discharge port 30 is disposed inside the display chamber 15 of the door unit 40, and the room temperature air discharge port 34 is disposed outside the door unit 40. Similarly, a cold air inlet 31 is arranged on the display chamber 15 side of the door unit 40, and a room temperature air inlet 35 is arranged outside the door unit 40.
Therefore, a cold air curtain is formed by the cold air discharge port 30 and the cold air suction port 31 on the inner side of the display chamber 15 of the door unit 40, and the normal temperature air discharge port 34 and the normal temperature are formed outside the door unit 40. An air curtain made of room temperature air is formed by the air suction port 35.

In general, when the door 42 is installed, a cold air curtain is formed in the display chamber 15 as described above, and the inner surface of the door 42 is always exposed to the cold air. And it is the structure which draws in cold air from the cold air suction inlet 31, and since cold air tends to accumulate below, it exists in the tendency for the inner lower side of the door 42 to cool most easily.
Therefore, in the state as it is, the lower side of the outer surface of the door 42 is at a lower temperature than the outside air, so that the 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 so that the cool air in the cabinet does not reach the lower door holding member 51 with the door 42 closed. Therefore, the lower door holding member 51 made of metal can be prevented from being cooled more than necessary.
Moreover, since an air curtain of room temperature air can be formed outside the door unit 40, room temperature air can always be applied to the outside surface of the door 42, and condensation on the outside surface of the door 42 can be prevented. .

As described above, it is possible to prevent condensation, but in the event that condensation occurs on the door 42, the condensed water falls down along the door 42, but the lower door holding member 51 causes condensation. Can receive water. Therefore, since the dew condensation water can be received by the lower door holding member 51 even when the door 42 is opened, it is possible to reliably prevent the dew condensation water from falling down when the door 42 is opened. Can do.
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 to the lower frame 46 by the guide groove 74 of the lower hinge portion 71. Condensed water falling on the lower frame 46 is stored in the drain pan of the machine room via the internal slit 80 and the external 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 condensed water adhering to the door 42, and the lower hinge that supports the door 42 so that it can be opened and closed. The lower hinge member 70 includes a guide groove 74 that guides the dew condensation water to the lower frame 46.
According to this, since the dew condensation water received by the lower door holding member 51 is guided to the lower frame 46 by the guide groove 74 of the lower hinge member 70, the door 42 is in a state where condensation has adhered to the door 42. Even when the door is opened, it is possible to reliably prevent the condensed water from falling from the door 42 onto the floor or the like, and the condensed water dropped on the lower frame 46 can be collected in the drain pan of the machine room.

In the present embodiment, a water guide plate 77 having an inclined surface 78 for guiding condensed water to the lower hinge member 70 is provided inside the lower door holding member 51.
According to this, since the inclined surface 78 is formed on the water guide plate of the lower door holding member 51, the condensed water that has dropped from the door 42 is received by the lower door holding member 51 and the water guide plate, and the lower hinge member 70. Can be guided to.

Moreover, in this embodiment, the warehouse inner side slit 80 which sends condensed water to a drain pan is provided in the warehouse inner side of the lower frame 46, and the lower frame 46 is provided with the inclined surface 82 which guides condensed water to the warehouse inner side slit 80. Yes.
According to this, since the inclined surface 82 that guides the dew condensation water to the inner slit 80 is formed on the lower frame 46, the dew condensation water that has fallen on the lower frame 46 is transferred to the inner slit 80 by the inclined surface 82. I can guide you.

Moreover, in this embodiment, the warehouse outer side slit 81 which sends condensed water to a drain pan is provided in the warehouse outer side of the lower frame 46, and the lower frame 46 is provided with the inclined surface which guides condensed water to the warehouse outer side slit 81. .
According to this, since the inclined surface which guides the dew condensation water to the outer side slit 81 is formed in the lower frame 46, the dew condensation water which fell to the lower frame 46 is guided to the outer side slit 81 by the inclined surface. be able to.

Further, in the present embodiment, the guide groove 74 is formed at a position where the condensed water by the guide groove 74 flows above the lower frame 46 when the door 42 is fully closed and when the door 42 is fully closed. Yes.
According to this, the condensed water can be reliably guided to the lower frame 46 by the guide groove 74.

  The present invention is not limited to the one described in the above embodiment, and various changes and applications can be made without departing from the spirit of the present invention.

DESCRIPTION OF SYMBOLS 1 Showcase 10 Heat insulation wall 11 Side plate 12 Inner panel 13 Front opening 14 Bottom plate 15 Display room 18 Duct for cold air 19 Duct for normal temperature air 21 Shelf plate 30 Cold air discharge port 31 Cold air inlet 31 Cold air blower 34 Normal temperature air discharge port 35 Normal temperature Air inlet 36 Air blower for room 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 support portion 74 Guide groove 77 Water guide plate 78 Inclined surface 80 Inner side slit 81 Outer side slit 82 Inclined surface 85 Rising member 86 Packing

Claims (5)

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 chamber formed in the heat insulating wall and having a front opening; and a door unit having a door that opens and closes the front opening; In the showcase provided,
A lower door holding member that holds the lower part 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 opened and closed.
The lower hinge member includes a guide groove for guiding condensed water to the lower frame.   The showcase according to claim 1, wherein a water guide plate having an inclined surface for guiding condensed water to the lower hinge member is provided inside the lower door holding member.   The inside of the lower frame is provided with an inside slit for sending condensed water to a drain pan, and the lower frame is provided with an inclined surface for guiding the condensed water to the inside slit. The showcase according to claim 2.   The outer side of the lower frame is provided with an outer slit for sending condensed water to a drain pan, and the lower frame has an inclined surface for guiding the condensed water to the outer slit. The showcase according to claim 3.   The said guide groove is formed in the position where the dew condensation water by the said guide groove flows above the said lower frame in the state in which the said door was fully closed, and the state in which the said door was fully closed. The showcase according to any one of claims 1 to 4.

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