JP4716401B2 - Refrigerated display case - Google Patents

Description

  The present invention relates to a showcase for refrigeration / warm storage, and more particularly to a configuration in which the upper side of a display shelf in a commodity storage room can be switched to refrigeration or warm storage.

Conventionally, multiple-stage display shelves in the product storage room provided in the showcase body to display and sell PET bottle drinks and canned drinks at the same time in a heated and refrigerated state at food departments such as supermarkets and convenience stores. The showcase for cold / warm storage which can use the upper part side as a warmer display part is used.
As a showcase of this type, a configuration is conventionally known in which a damper is provided at a cold air outlet of a back plate of a product storage room, and the outlet position can be changed by opening and closing the cold air outlet by the damper ( For example, see Patent Document 1.)
JP 2004-012021 A

The refrigerated display case disclosed in Patent Document 1 is integrally formed with a casing made of a heat insulating material. Inside the casing is a product storage chamber having a substantially U-shaped cross-sectional view with an open front surface. It is comprised by.
A cold air circulation duct is formed between the casing and the inner panel, and a cold air outlet that circulates in the cold air circulation duct is provided at the upper front end of the cold / warm showcase, and the lower front end Is provided with a suction port for the cold air blown out in front of the product storage room. A cool air circulation fan and a cooler are disposed in the cool air circulation duct.
A plurality of merchandise display shelves are attached to the merchandise storage chamber, and a plurality of openings that constitute the cold air outlets are provided at predetermined positions on the back plate.
Each merchandise display shelf is composed of a heating plate having a heater on the back surface and a heat insulating plate provided on the lower surface side of the heating plate, and the cold air blown out from the opening of the back plate is below the heat insulating plate. It has a lower shelf duct to pass through. At the front end of the shelf lower duct, there is provided a shelf lower outlet for blowing out cool air in the form of an air curtain toward the front of the product storage room.
A damper pivotally supported by a hinge is provided in the opening of the back plate, and the cold air outlet or the cold air circulation duct is opened and closed according to the operation of the damper handle on the front surface of the damper.
With the above configuration, the damper handle is operated, the back side cold air circulation duct is closed with the damper, and the opening of the back plate is opened, so that the product display shelf below the opening is used for refrigeration. Is possible. The product display shelf above the opening can be used for warm storage by operating a heater switch provided in a controller in the lower machine room.

However, in the configuration of Patent Document 1, when the product display shelf on the upper side of the product storage chamber is switched from refrigeration to warm storage, after opening the cold air outlet of the back plate by the operation of the damper handle, It has been necessary to turn on / off the heater switch on each commodity display shelf.
Therefore, in the case of a refrigerated display case with a large number of product display shelves, the work of switching between refrigeration and refrigeration accompanying the replacement of products according to the season becomes complicated, and forgetting to switch the heater switch or operating it incorrectly. Therefore, there is a problem that the heater may not be heated.

  This invention is for solving the said subject, and it aims at providing the showcase for refrigeration / warming which can make the switching operation of refrigeration and warming in each goods display shelf simple and reliable. To do.

In order to solve the above problems, the present invention is provided with a product storage room having a plurality of product display shelves provided with heaters for heating display products, and a back plate on the back side of the product storage room. A plurality of cool air circulation ducts, a plurality of openings provided at predetermined positions on the back plate, and an opening that communicates the product storage chamber and the cold air circulation duct. A showcase for refrigeration and storage comprising a damper pivotally supported so as to be opened and closed and a switching lever pivotally supported on the back side of the merchandise display shelf and switching the damper. A contact-type switch for turning on / off energization is provided on the back side of the product display shelf and at a portion that contacts when the switching lever is rotated to the open position of the opening , and the product display shelf is Horizontal state or Is an angle capable of changing the inclined state, the opening is characterized by being formed respectively on the portion corresponding to the horizontal state and the inclined state of the commodity display shelf.
In addition, the heater of the product display shelf is detachably connected to a wiring of a control box that performs switching control between warm storage and cold storage through a connector.
Further, the commodity display shelf includes a holding member for holding the switching lever in an open position on a back surface side.

As described above, according to the refrigerated storage case of the present invention, it is possible to switch between refrigeration or refrigeration in each product display shelf only by operating the switching lever, and the switching operation is easy and reliable. Can be.
In addition, it is possible to change the inclination angle of the product display shelf, and by forming openings in the parts corresponding to the horizontal state and the inclination state of the product display shelf, respectively, the inclination angle of the showcase in the refrigerated display case Can be changed.
In addition, by connecting the wiring of the control box of the showcase for refrigerated storage and the heater of each product display shelf with a connector, the height of the product display shelf (change of the locking position) and the number of product display shelves Changes (removal of product display shelves), etc. become possible.
Further, by providing a holding member for holding the switching lever in the open position, it is possible to reliably hold the open state even by vibrations or the like when the product is displayed on the shelf board.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a side sectional view showing a schematic configuration of an entire refrigerated showcase according to an embodiment of the present invention, and FIG. 2 is an enlarged sectional view showing a main part of the refrigerated showcase according to the present embodiment. FIG. 3 is a perspective view showing a switching lever, and FIG. 4 is a front view showing an operation switch of the control box.
A showcase 1 for cold storage according to the present embodiment is integrally formed with a casing 2 made of a heat insulating material, and inside the casing 2 is a product storage chamber 3 having a substantially U-shaped cross-sectional view with the front surface opened. Is constituted by the inner panel 4.
A cold air circulation duct 5 is formed between the casing 2 and the inner panel 4, and a cold air outlet 6 that circulates in the cold air circulation duct 5 is provided at the upper front end of the cold / warm showcase 1. At the lower front end, a suction port 7 for cold air blown out on the front surface of the commodity storage chamber 3 is provided. In the cold air circulation duct 5, a cold air circulation fan 8 and a cooler 9 are disposed.
A plurality of product display shelves 10 are attached in the product storage chamber 3.
A control box 11 is provided in the upper part of the showcase 1, and the control box 11 is provided with a plurality of switches such as an operation changeover switch and a shelf heater switch which will be described later.

As shown in FIG. 2, each merchandise display shelf 10 includes a shelf bracket 12 that is locked to a support in the merchandise storage chamber 3, and a shelf that is pivotally supported so that the inclination angle of the shelf bracket 12 can be changed. It is comprised from the board part 13. FIG.
The shelf board part 13 is comprised from the heating plate 14 provided with the heater in the back surface, and the heat insulation board 15 provided in the lower surface side of the heating board 14, and has the shelf lower part duct 16 in the lower part of the heat insulation board 15. FIG. At the front end of the shelf lower duct 16 is provided a shelf lower outlet 17 for blowing cold air toward the front of the product storage chamber 3 in the form of an air curtain.
In the commodity storage chamber 3, a plurality of openings 19 are provided at a predetermined position of the back plate 18 to form a cold air outlet. The opening 19 is formed in a portion where cold air can be blown out to the lower shelf duct 16 of the shelf 13 in a state where each shelf 13 is horizontal or inclined.
A damper 20 for closing the opening 19 or the cold air circulation duct 5 is provided at a portion corresponding to the opening 19 of the back plate 18.
In the present embodiment, the switching lever 21, the contact type switch 22 and the lever holding member 23 are provided on the back side of the heat insulating plate 15 constituting the shelf board portion 13, and the damper 20 has a hinge 24 on one end side of the damper 20. The face plate 18 is pivotally supported on the cold air circulation duct 5 side.
In such a configuration, in the damper 20, the rear end portion 21 a pushes up the damper 20 in accordance with the operation of the switching lever, thereby opening the opening 19 and closing the cold air circulation duct 5. A packing 25 for closing the cool air circulation duct is attached to the rear end side of the damper 20.
As shown in FIG. 3, the switching lever 21 has an open position (a position where the rear end portion 21 a of the switching lever 21 pushes up the damper 20 and opens the opening 19 with respect to the back surface side of the heat insulating plate 15. ) To a closed position (a position in which the state where the damper 20 is pushed up is released and the opening 19 is closed by the damper 20) is pivotally supported by approximately 90 degrees.
The contact-type switch 22 is arranged so that the switch is turned on with the switching lever 21 in the open position.
The lever holding member 23 is made of an elastically deformable plate material, and holds the switching lever 21 in the open position.
Note that the heater wiring of the heating plate 14 and the wiring disposed on the back side of the back plate 18 from the control box 11 are detachably connected via a connector (not shown).

As shown in FIG. 4, the control box 11 includes an operation changeover switch 26, a shelf heater switch 27, and a cold temperature changeover switch 28 on the front side.
The operation changeover switch 26 can be switched to three stages of “operation stop”, “hot & cold”, and “all-stage hot”, and will be set to “operation stop” when performing the switching operation as will be described later. In the case of partial refrigeration or full refrigeration, switch to “hot and cold”, and in the case of full refrigeration, switch to “all stages hot”.
The shelf heater switch 27 is switched when the heater of each product display shelf is turned off when the operation changeover switch 26 is “hot & cold” or “all-stage hot”. As a result, the product display shelf set for warm storage can be set for display of room-temperature products.
The cold temperature changeover switch 28 performs temperature setting changeover in the refrigerated state.

With the above configuration, in the refrigerated showcase according to the present embodiment, as shown in FIGS. 5 and 6, the switching lever is operated so that part or all of the product storage room is used for refrigeration and warm storage. Switch to use.
FIG. 5 shows an example in which the entire product storage room is used for refrigeration (COLD).
When switching the entire product storage room for refrigeration, the operation changeover switch is switched to “operation stop” after the product is transferred from each product display shelf.
Push the tip of the lever holder holding the switching lever of each merchandise display shelf downward to release the holding state, and pull the switching lever to the closed side to make it the closed position. As a result, the damper supported at the rear end of the switching lever rotates to close the opening provided in the back plate and open the cold air circulation duct.
In this state, change the operation selector switch to “Hot & Cold”.
As described above, the cold air that has passed through the open cold air circulation duct is blown out from the outlet at the front end of the showcase upper surface, and the cold air curtain CA is formed on the front side of the product storage room, so that the entire product storage room is cooled. .

FIG. 6 shows an example in which the product display shelves on the upper side of the product storage room are used for hot storage (HOT) and the product display shelves below are used for refrigeration (COLD). is there.
When a part of the product storage room is switched to warm storage, after the product is moved from each product display shelf, the operation changeover switch is temporarily switched to “operation stop”.
Only the switching lever of the merchandise display shelf to be switched to warm storage is held in the open position by pushing the lever into the lever holder. As a result, the damper is pushed up at the rear end of the switching lever to open the opening provided in the back plate and close the cold air circulation duct. In addition, the switching lever is in contact with the contact switch (heater on).
In this state, change the operation selector switch to “Hot & Cold”.
As described above, the cold air that has passed through the cold air circulation duct is blown forward along the lower surface of the product display shelf from the lower opening of the product display shelf in the fifth stage, and the front surface in the product storage chamber in the sixth stage or less. Then, a cold air curtain CA is formed, and the lower part of the product storage room is cooled. The product display shelves up to the fifth level are heated by a heater.
Similarly, when only the upper stage from the fifth stage is used for warm storage, similarly, by switching only the switch lever of the product display shelf to be switched to warm storage and switching the operation switch to “Hot & Cold”. The product display shelves on the upper side can be kept warm.

When the entire product storage room is used for warm storage, the operation changeover switch is switched to “all stages hot”. In this case, the operation of the switching lever of each merchandise display shelf is unnecessary.
As a result of the above operation, the heaters of all the merchandise display shelves in the merchandise storage chamber are heated.

Moreover, as shown in FIG. 7, according to display goods, the shelf part of a goods display shelf is used as a horizontal state or inclination information.
In this case, in the inclined state, as shown in FIG. 7A, the damper 20A of the upper opening 19A is opened and closed, and the cool air is sent to the lower shelf duct to form the cool air curtain CA.
On the other hand, in the horizontal state, as shown in FIG. 7B, the damper 20B of the lower opening 19B is opened and closed, and the cool air is sent to the lower shelf duct to form the cool air curtain CA.

As described above, in the refrigerated display case according to the present embodiment, the contact type switch for turning the heater on / off is provided on the back surface of the product display shelf, so that the damper can be opened and closed by operating the switching lever. In addition, it is possible to turn on / off the heaters of each merchandise display shelf, thereby facilitating the switching operation.
In addition, since the openings are provided in the portions corresponding to the horizontal state or the inclined state of the product display shelf, the product display shelf can be applied to a refrigerated display case having a product display shelf capable of changing the inclination angle. It becomes possible.
In addition, because the control box wiring and the heater wiring of each product display shelf are detachably connected by a connector, the inclination angle and height of each product display shelf can be easily adjusted without worrying about the heater wiring. The number of merchandise display shelves can be changed. Therefore, it is possible to easily change the shelf position according to the product size when replacing the product according to the season.
In addition, since the holding member that holds the switching lever in the open position is provided, it is possible to prevent displacement of the switching lever due to vibration or the like during product display, and the opening state of the opening and the ON state of the contact type switch Can be ensured.

Note that the present invention is not limited to the embodiment described above, and the shape of the showcase and the height and number of the product display shelves may be changed. The size, number, arrangement, etc. of the levers may be changed.
Also, in the control box, for the product display shelf above the product display shelf for which the contact type switch is turned on, the heater is turned on regardless of the position of the switching lever (contact type switch on / off). It is good also as providing the means to perform. Therefore, for example, in the example of FIG. 6, even when only the switching lever of the fifth-stage product display shelf is in the open position, all the first to fifth-stage product display shelves are heated by the heater. Become. Thereby, the switching operation in the case of using some product display shelves in the product storage room for warm storage can be simplified.

It is side sectional drawing which shows schematic structure of the showcase for cold storage according to one embodiment of this invention. It is a sectional side view which shows the principal part of the showcase for cold storage according to one embodiment of this invention. It is a top view which shows an example of the switching lever which comprises the showcase for cold storage according to one embodiment of this invention. It is a front view which shows an example of the operation panel of the control box which comprises the showcase for cold storage according to one embodiment of this invention. It is a figure for demonstrating the usage method of the showcase for refrigeration according to one embodiment of this invention. It is a figure for demonstrating the usage method of the showcase for refrigeration according to one embodiment of this invention. It is a schematic sectional drawing which shows each use condition of the showcase for cold storage according to one embodiment of this invention which concerns on one embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Showcase for cold storage 2 Casing 3 Commodity storage room 4 Internal panel 5 Cooling air circulation duct 6 Outlet 7 Suction port 8 Cooling air circulation fan 9 Cooler 10 Merchandise display shelf 11 Control box 12 Shelf bracket 13 Shelf plate part 14 Heating plate DESCRIPTION OF SYMBOLS 15 Thermal insulation plate 16 Lower shelf duct 17 Lower shelf outlet 18 Back plate 19 Opening part 20 Damper 21 Switching lever 21a Rear end part 22 Contact type switch 23 Lever holding member 24 Hinge 25 Packing 26 Operation switching switch 27 Shelf heater switch 28 Cold temperature Selector switch

Claims (3)

A product storage room having a plurality of product display shelves provided with heaters for heating the displayed products, a cold air circulation duct provided on the back side of the product storage room via a back plate, and a predetermined number of the back plate A plurality of dampers that are provided at positions, and that support the product storage chamber and the cold air circulation duct, and a damper that is pivotally supported by a hinge so that the opening and the cold air circulation duct can be opened and closed by a hinge with respect to the vicinity of the opening. And a showcase for refrigerated storage comprising a switching lever that is pivotally supported on the back side of the product display shelf and that opens and closes the damper,
A contact-type switch for turning on / off the energization of the heater is provided on the back side of the commodity display shelf, and in a portion that comes into contact when the switching lever is rotated to the open position of the opening ,
The product display shelf is configured to be capable of changing the angle to a horizontal state or an inclined state, and the opening is formed in a portion corresponding to the horizontal state and the inclined state of the product display shelf, respectively. For showcase. The showcase for cold storage according to claim 1, wherein the heater of the commodity display shelf is detachably connected via a connector to a wiring of a control box that performs switching control between the cold storage and the cold storage. The showcase for cold storage according to claim 1 or 2 , wherein the commodity display shelf includes a holding member for holding the switching lever at an open position of the opening.

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