JP3777824B2 - Vending machine cabinet - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a cabinet of a vending machine that sells can beverage products and the like as cold or hot products.
[0002]
[Prior art]
First, FIG. 2 shows the configuration of the vending machine described above. In the figure, reference numeral 1 denotes a cabinet which is a front open box, 2 is its front door, 2a is a product outlet, 3 is a heat-insulated inner door arranged on the back side of the front door 2, and 4 is a product for storing the product 5. A storage rack (serpentine type product storage rack), 6 is a carry-out shooter for sending the product 5 discharged downward from the product storage rack to the product outlet 2a, 7 is a cooling / heating unit installed on the bottom side of the cabinet, 8 A cooling air suction duct, which is arranged on the back side in the cabinet connected to the rear end of the cooling / heating unit 7 and whose upper end is opened to the middle position in the cabinet, and 9 is a refrigerator installed on the base side of the cabinet 1 Condensing unit. In the cabinet 1, a plurality of product rooms 11 are defined by inserting a partition wall 10 as a heat insulating wall shown in FIG. 3 and arranged on the left and right sides. The rack, the shooter 6 and the cooling / heating unit 7 are provided.
[0003]
The cooling / heating unit 7 is an assembly of a product cooler (refrigerator evaporator) 7a, a product heating heater 7b, a blower fan 7c, and a wind tunnel 7d. The rear end communicates with the suction duct 8.
On the other hand, the cabinet 1 is required to have sufficient rigidity and mechanical strength because a heavy goods storage rack 4 and the like are mounted in the cabinet, and as shown in FIG. 3, a steel plate inner box 1a and an outer box 1b A heat insulating casing is formed by foaming a foam heat insulating material 1c such as a hard urethane foam, and the suction duct 8 is attached along the back wall surface of the inner box 1a.
[0004]
With such a configuration, in the merchandise room that sells cold merchandise, the cooler 7a of the cooling / heating unit 7 is operated, and air that has become low temperature due to heat exchange with the cooler 7a is blown by the fan 7c as indicated by the arrows in the figure. The product 5 flows through the room and is circulated through the suction duct 8 so as to return to the cooling / heating unit 7 again, and the product 5 stored in the product storage rack 4 is kept at a suitable selling temperature in the air blowing process. As is well known, in a merchandise room where hot merchandise is sold, the heater 7b of the cooling / heating unit 7 is energized, and warm air heated by the heater is circulated to heat the merchandise 5 to an appropriate sales temperature.
[0005]
[Problems to be solved by the invention]
In the above-described vending machine that sells cold and hot products, the heat loss is reduced and energy is reduced in the cabinet. When one of the product rooms sells cold products and the other room sells hot products), high heat insulation performance is required, while improving the product storage efficiency in the warehouse, and the road of the vending machine protrudes It is desired to make the heat insulation wall of the cabinet 1 as thin as possible because of the thinning due to problems.
[0006]
From such a point of view, the inventors examined the distribution of heat flow and heat loss of the heat insulating wall in the cold and hot operation state for each part in the cabinet in the process of improving the cabinet. It was found that a large heat loss occurred in the rear area of the cabinet facing. This is because the cold air or warm air blown into the cabinet flows in a concentrated manner in the ventilation passage of the suction duct 8 having a small cross-sectional area in the middle of returning to the cooling / heating unit 7, and the inner box (steel plate of the cabinet 1) in the duct. The product is for washing the surface of 1a and ventilating it, and of course, not only the heat flow between the inside and outside of the box, but also the adjacent cold product room with the inner box 1a made of steel plate having high thermal conductivity as the heat transfer path Increased heat flow between hot product rooms.
[0007]
The present invention has been considered in view of the above points. The object of the present invention is to solve the above-mentioned problems, and only to add a small amount of heat insulating material, between inside / outside the warehouse and between adjacent product rooms. The purpose is to provide an improved vending machine cabinet that effectively reduces heat to reduce heat loss and save energy.
[0008]
[Means for Solving the Problems]
In order to achieve the above object, according to the present invention, a partition wall is arranged in a cabinet and partitioned into a plurality of product rooms, and each product room has a product storage rack, a cooling / heating unit with a fan, and the A cabinet of a vending machine provided with a suction duct for circulating air on the back side of the cabinet connected to the wind tunnel of the cooling / heating unit, and the cabinet has a foam insulation between the inner box and the outer box made of steel plate. In what constitutes a heat-insulating housing filled, a spacer is provided only on the upper edge of the heat insulating material so as to suspend the sheet-like heat insulating material on the wall surface of the inner box of the cabinet along the ventilation path in the suction duct. Secure and lay the insulation up from the wall of the inner box.
[0009]
According to such a configuration, during the cold or hot operation of the product room, the circulating cold airflow or warm airflow that flows in the ventilation duct in the suction duct is concentrated on the wall surface of the steel plate inner box constituting the heat insulation cabinet. There is no direct contact and heat transfer, and heat transfer between the inner box wall surface is kept low by the interposition of a heat insulating material installed in the suction duct. Moreover, since a heat insulation layer of air is generated between the heat insulation sheet and the wall surface of the inner box by laying the heat insulation sheet slightly floating from the wall surface of the inner box as this heat insulating material, the heat insulation property is further enhanced. become.
[0010]
This makes it possible to reduce the heat flow between adjacent cold product rooms and hot product rooms, as well as between the inside and outside of the cabinet, by simply adding a heat insulating sheet to the surface area of the air duct in the suction duct. The heat loss can be effectively reduced.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described based on the example shown in FIG. In the drawings of the embodiment, the same members corresponding to those in FIGS. 2 and 3 are denoted by the same reference numerals, and description thereof is omitted.
That is, in the illustrated embodiment, a plastic heat insulating sheet 12 is laid as a heat insulating material on the wall surface on the back surface of the inner box 1a constituting the cabinet 1 along the internal ventilation path of the suction duct 8, and the heat insulation thereof. The upper edge of the heat insulating sheet 12 is fixed with a screw 14 via a spacer 13 so that the sheet 12 floats and hangs from the wall surface of the inner box 1a.
[0012]
With this configuration, when the product room 11 in the warehouse is cold-operated or hot-operated, the cold air or warm air that is sucked into the suction duct 8 and concentrated in the duct is insulated as indicated by the arrows in the figure. It flows along the sheet 12 and does not directly touch the wall surface of the inner box (made of steel plate) 1a of the cabinet 1. Thus, cooling air flowing through the suction duct 8, to the heat transfer between the warm air flow and the box 1a is suppressed by the intervention of the heat insulating sheet 12, the internal / refrigerator outside between, and adjacent product chamber cross The heat loss of the cabinet due to heat transfer is reduced. In particular, by laying the heat insulating sheet 12 so as to float from the wall surface of the inner box 1a, a heat insulating layer of an air gap is formed between the heat insulating sheet 12 and the wall surface of the inner box 1a, thereby further improving the heat insulating performance. To do.
[0013]
【The invention's effect】
As described above, according to the configuration of the present invention, the sheet-like heat insulating material is laid on the wall surface of the inner box of the cabinet along the ventilation path in the suction duct arranged on the back surface in the warehouse. By laying a heat insulation sheet in the ventilation path in the suction duct, which has a smaller surface area than the entire inner area, the heat flow between the inside / outside of the room and between the adjacent cold room and hot room can be effectively reduced. In this way, the heat insulation performance of the cabinet can be improved, which can greatly contribute to the thinning of the cabinet and the energy saving of the vending machine.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of a main part of a vending machine adopting a cabinet according to an embodiment of the present invention. FIG. 2 is a cross-sectional view of the entire vending machine to which the present invention is applied. Sectional view showing conventional structure around the duct 【Explanation of symbols】
DESCRIPTION OF SYMBOLS 1 Cabinet 1a Inner box 1b Outer box 1c Foam insulation 4 Goods storage rack 5 Goods 7 Cooling / heating unit 7a Cooler 7b Heater 7c Fan 7d Wind tunnel 8 Suction duct 10 Partition wall 11 Goods room 12 Thermal insulation sheet

Claims (1)

A partition wall is arranged in the cabinet and divided into a plurality of product rooms. The product storage rack, the cooling / heating unit with a fan, and the cooling / heating unit wind tunnel are connected to the rear side of the product in each product room. in a cabinet of the vending machine provided with a suction duct of the circulating air, in which the cabinet is as a heat insulating casing filled with foam insulation between the inner box and the outer box of steel plate, in the suction duct Fix the sheet-like heat insulation material on the wall of the cabinet inner box along the ventilation path of the cabinet with spacers only on the upper edge of the heat insulation material, and lay the heat insulation material up from the wall surface of the inner box A vending machine cabinet characterized by that .

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