JP6145648B2 - vending machine - Google Patents

Description

  The present invention relates to a heat insulating structure of a vending machine in which a heat insulating plate is arranged on an inner wall surface of a product storage with an open front, and the product storage is divided into left and right by a heat insulating partition plate.

  As shown in FIG. 11, a conventional vending machine of this type has a box-like vending machine main body 1 with an open front and a product storage provided in a space partitioned above the machine room of the main body 1. A cabinet 2, an outer door 3 that opens and closes the front opening of the main body 1, an inner door 4 that is provided inside the outer door 3 so that the front opening of the product storage 2 can be opened and closed, and the product storage 2 The product storage shelf 5 that is installed and stores the product, and the air suction port 6a is extended forward from the lower end portion to the upper end surface that is long in the vertical direction and is close to the substantially middle portion in the vertical direction on the back of the product storage 2. The internal duct 6 having an air outlet 6c on the front surface of the extended duct 6b is installed in the bottom of the bottom of the commodity storage 2.

  Further, in the front of the air outlet 6 c, the internal heat exchanger 7 is disposed on the bottom surface of the commodity storage 2 facing the air outlet 6 c. Furthermore, for blowing cold air cooled by the internal heat exchanger 7 (when the internal heat exchanger 7 functions as a condenser of the refrigerant circuit, warm air warmed by the internal heat exchanger 7). Blower fan 8, fan duct 9 for fixing internal heat exchanger 7 and internal duct 6 and heater storage that stores heater 10 that is energized and generates heat when product storage 2 is a heating chamber. The ventilation unit 12 provided with the part 11 is installed (for example, refer patent document 1).

  The operation and action of the vending machine configured as described above will be described below.

  First, when the product storage 2 is set to be cooled, the circulation fan 8 sucks in the circulating air from the air suction port 6a on the upper end surface of the duct 6 by the function of the blower fan 8. The sucked air is cooled by the internal heat exchanger 7 and cools the products stored in the product storage shelf 5.

  Similarly, when the product storage 2 is set to be heated, the air sucked from the air suction port 6a is heated by the heater 10 (or when the internal heat exchanger 7 functions as a condenser of the refrigerant circuit). The product warmed by the container 7) and warmed in the product storage shelf 5 is heated.

  Since the air circulation path of the internal circulation air extending from the internal duct 6 to the air outlet of the blower unit 12 includes the extension duct 6b which is a part of the internal duct 6, the air outlet of the air blower unit 12 is connected to the commodity storage 2. It can be positioned more forward in the depth direction.

  As a result, the circulating air in the warehouse is blown out from the lower front of the product storage 2, and the air suction port 6 a of the internal duct 6 is close to the substantially middle portion of the back of the product storage 2 in the vertical direction. Since it exists in the upper end surface of the inner duct 6, the circulation of the air in the goods storage 2 will convect over the whole region.

  By the way, the heat insulating back plate 13 disposed on the back surface of the product storage 2 is composed of a single plate and is attached along the back plate of the outer box of the main body 1. The heat insulating bottom plate 14 is also formed of a single plate and attached along the storage bottom plate of the outer box, and the heat insulating top plate 15 disposed on the ceiling surface of the product storage 2 is also provided. Composed of a single plate-like body and attached along the storage ceiling plate of the outer box, the product storage 2 with respect to the inner surface of the heat insulating back plate 13, the heat insulating bottom plate 14 and the heat insulating top plate 15 The end face of the heat insulation partition plate (not shown) for carrying out heat insulation division to right and left is contacted and attached.

  Since the outer box is formed of a relatively thin metal plate, a phenomenon that the center portion is warped so as to protrude outward is particularly likely on the back plate side having a large area.

  If such a warp occurs in the back plate of the outer box, the heat insulating back plate 13 also warps. Therefore, if a gap occurs between the heat insulating back plate 13 and the end face of the heat insulating partition plate, In the vending machine in which the storage 2 is divided into a heating chamber and a cooling chamber on the left and right, the heat transfer from the heating chamber to the cooling chamber increases, and the heating chamber is heated to cool the cooling chamber. The power consumption for doing so increases.

  Therefore, the cushion material is attached to the rear end surface of the heat insulating partition plate, and a double-sided adhesive tape is attached to the portion where the cushion material contacts the heat insulating back plate 13 side. It has been proposed to reduce the heat transfer from the inside of the heating chamber to the inside of the cooling chamber by filling the gap between the end faces (see, for example, Patent Document 2).

JP 2012-8829 A JP2011-145985A

  However, in the conventional vending machine disclosed in Patent Document 1, the location above the internal duct 6 between the heat insulating back plate 13 and the commodity storage shelf 5 is the same as the upper portion of the internal duct 6. Since the space is thick, not only the central portion in the vertical direction but also the upper air in the product storage 2 is sucked from the air suction port 6a on the upper end surface of the internal duct 6 and sent by the blower fan 8. Air circulated to the upper part of the product storage 2 and circulated. As a result, the effect of shortening the operating time of the compressor and heater 10 for sending the refrigerant to the internal heat exchanger 7 is not so much exhibited, and the effect of reducing the power consumption of the vending machine is insufficient. .

  This invention solves the said subject, restrict | limits the circulation area | region of the air in goods storage to the range effective in energy saving, and it aims at reducing the power consumption of a vending machine.

  In addition, in the vending machine disclosed in Patent Document 2, when the heat insulating back plate is relatively warped, the compression performance of the cushion material is reduced, so that the sealing performance by the cushion material is reduced, and cooling from the heating chamber is performed. There was a problem that heat transfer into the chamber increased.

  In addition, when the adhesiveness of the double-sided adhesive tape decreases and the elasticity of the cushioning material also decreases due to secular change, there is a problem that a gap may be generated between the heat insulating back plate and the end face of the heat insulating partition plate. It was.

  The present invention solves the above-mentioned conventional problems, and in a vending machine in which a product storage is partitioned into a heating chamber and a cooling chamber on the left and right by a heat insulating partition plate, the rear surface that insulates the entire rear surface of the product storage. An object of the present invention is to provide a vending machine capable of reducing the heat transfer between the heating chamber and the cooling chamber even when the central portion of the heat insulating plate is warped so as to protrude outward.

In order to achieve the above object, the vending machine of the present invention insulates the inner wall surface of the product storage with the front face open by at least a rear heat insulating plate and a side heat insulating plate, and further adds the product storage by a heat insulating partition plate. The storage compartment is divided into a left and a right compartment, and in the heating compartment and in the cooling compartment, a commodity storage shelf for storing products, a heating means or a cooling means below the product storage shelf, the heating means or the above A blower fan that blows air in front of or behind the cooling means forward, up and down from the bottom of the cabinet between the product storage shelf and the rear heat insulating plate to the height of the lower part of the product storage shelf or a substantially intermediate part in the vertical direction Vending machines each provided with rear ducts extending in the direction and guiding the air in the warehouse downward, on the front surface of the rear heat insulating plate located on the rear surface of the heating chamber, the left and right end faces are the side heat insulating plates and For the heat insulating partition plate Each of the side heat insulating plates and the inner heat insulating partition plate elastically sandwiched between the side heat insulating plates and the heat insulating partition plates are stacked in contact with each other so that the rear heat insulating plates are not exposed to the heating chamber, The portion above the air suction port formed on the upper end surface of the rear duct on the inner rear heat insulating plate has a gap between the rear of the product storage shelf and the rear duct. Is a projection that is substantially the same as the gap between the rear of the product storage shelf and the gap between the rear duct, and a portion below the projection on the inner rear heat insulating plate guides the air in the compartment downward In order not to hinder the function of the back duct, the gap between the back of the product storage shelf is made larger than the gap between the back of the product storage shelf and the protruding portion.

  In the above configuration, the space on the back side of the product storage shelf is higher than that of the conventional configuration without the projection due to the protrusion protruding forward so as to be close to the back of the product storage shelf above the rear duct ( The air path resistance between the back of the product storage shelf and the front of the protruding part is large, so that the air in the upper part of the heating chamber passes through the gap between the back of the product storage shelf and the front of the protruding part. As a result, it becomes difficult to flow into the air suction port on the upper end surface of the rear duct, and as a result, the air in the upper part of the heating chamber stagnates at that position.

  In addition, the air flow descending from the upper part of the back surface of the heating chamber simply descends vertically along the front surface of the protruding portion of the inner back insulating plate, but the protruding portion of the inner inner heat insulating plate in the heating chamber. As a result of the air curtain effect, the downward flow is blocked by the air flow flowing into the air suction port formed at the upper end surface of the rear duct from the area below the same height as the lower end of the rear duct. Air stagnates at that location.

  Therefore, it is possible to minimize the air sent by the blower fan from flowing into the upper part of the heating chamber (or the upper part of the product storage shelf and the substantially middle part in the vertical direction) and circulating. As a result, since the range of partial heating is maintained appropriately, power consumption is reduced.

  In addition, as a result of stacking the inner back insulating plate so that the rear insulating plate is not exposed to the heating chamber, the thickness of the insulating wall on the back side of the heating chamber increases, and heat flows out from the back of the heating chamber. As a result, the power consumption is reduced.

  Also, even if the heat insulation is reduced at the portion between the rear heat insulating plate and the heat insulating partition plate, the central portion of the rear heat insulating plate is warped so as to protrude outward, the inner rear heat insulating plate is Since the part where the heat insulation between the heat insulating partition plate and the passage where the heat from the heating chamber is transmitted is blocked, the heat transfer from the heating chamber to the cooling chamber can be suppressed, Thereby, the power consumption of the vending machine can be reduced.

  According to the present invention, the protrusion on the back side of the product storage shelf is located above the rear duct and protrudes forward so as to be close to the back of the product storage shelf, compared to the conventional configuration without the protrusion. Because the air path resistance of the space (the gap between the back of the product storage shelf and the front of the protrusion) is large, the air in the upper part of the heating cabinet creates a gap between the back of the product storage shelf and the front of the protrusion. As a result, it becomes difficult to flow into the air suction port on the upper end surface of the rear duct, and as a result, the air in the upper part of the heating chamber stagnates at that position.

In addition, the air flow descending from the upper part of the back surface of the heating chamber simply descends vertically along the front surface of the protruding portion of the inner back insulating plate, but the protruding portion of the inner inner heat insulating plate in the heating chamber. As a result of the air curtain effect, the downward flow is blocked by the air flow flowing into the air suction port formed at the upper end surface of the rear duct from the area below the same height as the lower end of the rear duct. Air stagnates at that location.

  Therefore, it is possible to minimize the air sent by the blower fan from flowing into the upper part of the heating chamber (or the upper part of the product storage shelf and the substantially middle part in the vertical direction) and circulating. As a result, since the range of partial heating is maintained appropriately, power consumption is reduced.

  In addition, as a result of stacking the inner back insulating plate so that the rear insulating plate is not exposed to the heating chamber, the thickness of the insulating wall on the back side of the heating chamber increases, and heat flows out from the back of the heating chamber. As a result, the power consumption is reduced.

  Also, even if the heat insulation is reduced at the portion between the rear heat insulating plate and the heat insulating partition plate, the central portion of the rear heat insulating plate is warped so as to protrude outward, the inner rear heat insulating plate is Since the part where the heat insulation between the heat insulating partition plate and the passage where the heat from the heating chamber is transmitted is blocked, the heat transfer from the heating chamber to the cooling chamber can be suppressed, Thereby, the power consumption of the vending machine can be reduced.

The schematic longitudinal cross-sectional view which shows the cross section at the time of cut | disconnecting the vending machine in Embodiment 1 and Embodiment 2 of this invention right and left in the part of the left warehouse used as a heating store | warehouse | chamber 1 is a cross-sectional view of the vending machine according to Embodiment 1 of the present invention taken along line AA in FIG. FIG. 1 is a cross-sectional view of the main body of FIG. CC sectional view of the main body of FIG. 1 excluding the door of the vending machine in Embodiment 1 of the present invention. In the vending machine of the same embodiment, a schematic cross-sectional view of the main body excluding the door in a state where the center portion of the rear heat insulating plate is warped so as to protrude outward Sectional view taken along the line AA of FIG. 1 of the vending machine according to the second embodiment of the present invention. Sectional view taken along the line BB of FIG. 1 of the main body excluding the door of the vending machine in the second embodiment of the present invention. CC sectional view of FIG. 1 of the main body except the door of the vending machine in Embodiment 2 of the present invention. The schematic longitudinal cross-sectional view which shows the cross section at the time of cut | disconnecting the vending machine in Embodiment 3 of this invention left and right in the part of the left warehouse used as a heating store | warehouse | chamber The schematic longitudinal cross-sectional view which shows the cross section at the time of cut | disconnecting the vending machine in Embodiment 3 of this invention left and right in the part of the left warehouse used as a heating store | warehouse | chamber Schematic longitudinal sectional view showing a cross section when a conventional vending machine is cut left and right

1st invention heat-insulates the inner wall surface of the goods storage which opened the front surface at least by a back heat insulating board and a side heat insulating board, and also partition the said goods storage into a heating chamber and a cooling box into right and left with a heat insulation partition plate A product storage shelf for storing products in the heating chamber and the cooling chamber, heating means or cooling means below the product storage shelf, and air in front of or behind the heating means or cooling means A blower fan that blows air from the bottom of the cabinet between the product storage shelf and the back heat insulating plate to the height of the lower part of the product storage shelf or a substantially middle portion in the vertical direction and guides the air in the cabinet downward Vending machines each provided with a rear duct, wherein the left and right end surfaces are elastically applied to the front surface of the rear heat insulating plate located on the rear surface of the heating chamber and to the side heat insulating plate and the heat insulating partition plate, respectively. In contact with the side An inner back heat insulating plate elastically sandwiched between a heat plate and the heat insulating partition plate is stacked so that the rear heat insulating plate is not exposed to the heating chamber, and an upper end surface of the rear duct in the inner back heat insulating plate. The portion above the air suction port formed at a predetermined dimension or more has a gap between the rear surface of the product storage shelf and the gap between the rear surface of the product storage shelf and the rear duct or substantially the same as that of the product storage shelf. A protrusion that is narrower than the gap between the back surface and the back duct, and a portion below the protrusion in the interior rear heat insulating plate is not hindered by the function of the back duct that guides the air in the interior downward. The gap between the back of the product storage shelf and the back of the product storage shelf and the protruding portion is made larger.

  In the above configuration, the space on the back side of the product storage shelf is higher than that of the conventional configuration without the projection due to the protrusion protruding forward so as to be close to the back of the product storage shelf above the rear duct ( The air path resistance between the back of the product storage shelf and the front of the protruding part is large, so that the air in the upper part of the heating chamber passes through the gap between the back of the product storage shelf and the front of the protruding part. As a result, it becomes difficult to flow into the air suction port on the upper end surface of the rear duct, and as a result, the air in the upper part of the heating chamber stagnates at that position.

  In addition, the air flow descending from the upper part of the back surface of the heating chamber simply descends vertically along the front surface of the protruding portion of the inner back insulating plate, but the protruding portion of the inner inner heat insulating plate in the heating chamber. As a result of the air curtain effect, the downward flow is blocked by the air flow flowing into the air suction port formed at the upper end surface of the rear duct from the area below the same height as the lower end of the rear duct. Air stagnates at that location.

  Therefore, it is possible to minimize the air sent by the blower fan from flowing into the upper part of the heating chamber (or the upper part of the product storage shelf and the substantially middle part in the vertical direction) and circulating. As a result, since the range of partial heating is maintained appropriately, power consumption is reduced.

  In addition, as a result of stacking the inner back insulating plate so that the rear insulating plate is not exposed to the heating chamber, the thickness of the insulating wall on the back side of the heating chamber increases, and heat flows out from the back of the heating chamber. As a result, the power consumption is reduced.

  Also, even if the heat insulation is reduced at the portion between the rear heat insulating plate and the heat insulating partition plate, the central portion of the rear heat insulating plate is warped so as to protrude outward, the inner rear heat insulating plate is Since the part where the heat insulation between the heat insulating partition plate and the passage where the heat from the heating chamber is transmitted is blocked, the heat transfer from the heating chamber to the cooling chamber can be suppressed, Thereby, the power consumption of the vending machine can be reduced.

  According to a second aspect of the present invention, the inside rear heat insulating plate of the first aspect is composed of two heat insulating plates having different sizes, and a relatively small heat insulating plate is overlapped and integrated on an upper front surface of a relatively large heat insulating plate. Is.

  In a third aspect of the invention, the inside rear heat insulating plate in the first invention is composed of two heat insulating plates having different thicknesses, and a relatively thick heat insulating plate is stacked on a relatively thin heat insulating plate.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. However, the present invention is not limited to the embodiments.

(Embodiment 1)
FIG. 1 is a schematic longitudinal sectional view showing a section when the vending machine according to Embodiment 1 of the present invention is cut left and right at a left warehouse portion serving as a heating cabinet. FIG. 2 is a cross-sectional view of the vending machine according to the embodiment, taken along line AA in FIG. 3 is a cross-sectional view of the main body excluding the door of the vending machine according to the embodiment, taken along line BB in FIG. 4 is a cross-sectional view taken along the line CC of FIG. 1 of the main body excluding the door of the vending machine according to the embodiment. FIG. 5 is a schematic cross-sectional view of the main body excluding the door in a state in which the central portion of the rear heat insulating plate is warped outward in the vending machine of the embodiment.

  As shown in FIG. 1, the vending machine according to Embodiment 1 of the present invention is provided in a space defined on the upper side of a machine room 22 of a box-like vending machine having an open front and a main body 21. And the outer door 24 that opens and closes the front opening of the main body 1, and the inner door 25 of a heat insulating structure that is provided inside the outer door 24 so that the front opening of the product storage 23 can be opened and closed. A product storage shelf 26 that is installed in the product storage 23 and stores products, and an air suction port 27a on the upper end surface that is long in the vertical direction and is close to the substantially middle portion of the back of the product storage 23 in the vertical direction. A rear duct 27 having an air outlet 27 b on the front surface of the lower end is installed in the bottom of the bottom of the commodity storage 23.

  Further, an in-compartment heat exchanger 28 is arranged on the bottom surface of the commodity storage 23 in front of the air outlet 27b so as to face the air outlet 27b. Furthermore, the cold air cooled by the internal heat exchanger 28 in front of the internal heat exchanger 28 (when the internal heat exchanger 28 functions as a condenser of the refrigerant circuit, it is heated by the internal heat exchanger 28. A blower fan 29 for blowing the warm air) and a heater 30 that is energized and generates heat when the interior is heated in front of the blower fan 29 are installed.

  As shown in FIGS. 1 to 4, the commodity storage 23 of the vending machine according to Embodiment 1 of the present invention is an outer box 21 a made of a steel plate having an open front surface that constitutes the outer shell of the main body 21 of the vending machine. A bottom heat insulating plate 31 that partitions the inside of the outer box 21a into upper and lower spaces, and a rear heat insulating plate 32 that insulates the back, side, and ceiling surfaces of the inner wall surface of the space above the bottom heat insulating plate 31 in the outer box 21a. The left side heat insulating plate 33, the right side heat insulating plate 34, and the top heat insulating plate 35 are configured.

  In the bottom heat insulating plate 31, the back heat insulating plate 32, the left side heat insulating plate 33, the right side heat insulating plate 34, and the top surface heat insulating plate 35, a plate-like hard urethane foam, a plate-like vacuum heat insulating material, and a vacuum heat insulating material were embedded. Plate-like rigid urethane foam, or a laminate of plate-like rigid urethane foam and plate-like vacuum heat insulating material, is used properly according to the required heat insulation performance and cost, and the surface of the heat insulation plate is used as necessary A protective sheet is provided.

  Further, the product storage box 23 is divided into left and right by two heat insulating partition plates 36 and 37 from the left into a left box 38 serving as a heating box, a middle box 39 serving as a cooling box, and a right box 40 serving as a cooling box. Yes.

  The bottom heat insulating plate 31 insulates the space above the bottom heat insulating plate 31 that becomes the commodity storage 23 and the space below the bottom heat insulating plate 31 that becomes the machine room 22.

  The back heat insulating plate 32 is disposed along the back surface of the inner wall surface of the outer box 21 a that forms the space above the bottom heat insulating plate 31, and is formed on the inner wall surface of the outer box 21 a that forms the space above the bottom heat insulating plate 31. Insulate by covering almost the entire back surface with one sheet.

  The left side heat insulating plate 33 is disposed along the left side surface of the inner wall surface of the outer box 21 a that forms the space above the bottom heat insulating plate 31 so that the rear end surface abuts the back heat insulating plate 32. The left side surface of the inner wall surface of the outer box 21a that forms the upper space of 31 is covered with one sheet for heat insulation.

  The right side heat insulating plate 34 is disposed along the right side surface of the inner wall surface of the outer box 21 a that forms the space above the bottom heat insulating plate 31 such that the rear end surface abuts against the rear heat insulating plate 32. The right side surface of the inner wall surface of the outer box 21a that forms the upper space of 31 is covered with one sheet for heat insulation.

The top surface heat insulating plate 35 is disposed so that the lower surface of the rear end portion is in contact with the upper end surface of the rear heat insulating plate 32 along the ceiling surface of the inner wall surface of the outer box 21 a that forms the space above the bottom heat insulating plate 31. Then, the entire ceiling surface of the inner wall surface of the outer box 21a that forms the space above the bottom heat insulating plate 31 is covered with one sheet for heat insulation.

  The heat insulating partition plate 36 is a heat insulating plate that partitions the left chamber 38 serving as a heating chamber and the middle chamber 39 serving as a cooling chamber, and a rear end surface that contacts the bottom heat insulating plate 31 and a rear heat insulating plate 32. And a cushioning material 41 made of polyethylene foam on the upper end surface in contact with the top heat insulating plate 35.

  The heat insulating partition plate 37 is a heat insulating plate that partitions the middle warehouse 39 serving as a refrigerator and the right warehouse 40 serving as a refrigerator, and includes a lower end surface that contacts the bottom heat insulating plate 31 and a rear end surface that contacts the rear heat insulating plate 32. A cushion material 41 made of polyethylene foam is provided on the upper end surface in contact with the top heat insulating plate 35.

  A heat insulating foam 27c is attached to the rear side of each of the left warehouse 38, the middle warehouse 39, and the right warehouse 40 to fill the gaps between the heat insulating partition plates 36 and 37 or the left side heat insulating plate 33 or the right side heat insulating plate 34 on the side surfaces. A rear duct 27 having an air inlet 27a at the upper end and an air outlet 27b at the lower front surface is provided.

  The rear duct 27 extends in the vertical direction from the bottom of the cabinet between the product storage shelf 26 and the back heat insulating plate 32 to the height of the lower part of the product storage shelf 26 or a substantially middle portion in the vertical direction, and guides the air in the cabinet downward. Is.

  In the present embodiment, the left and right end surfaces are elastically in contact with the left side heat insulating plate 33 and the heat insulating partition plate 36 on the front surface of the rear heat insulating plate 32 positioned on the rear surface of the left chamber 38 serving as a heating chamber, and the left side. The inside back heat insulating plate 42 elastically sandwiched between the surface heat insulating plate 33 and the heat insulating partition plate 36 is overlapped so that the back heat insulating plate 32 is not exposed to the left chamber 38. Note that the inside rear heat insulating plate 42 is disposed between the rear heat insulating plate 32 and the rear duct 27 of the left warehouse 38.

  The portion above the air suction port 27a formed on the upper end surface of the rear duct 27 in the inner rear heat insulating plate 42 by a predetermined dimension (350 mm in this embodiment) or more is a gap with the rear surface of the product storage shelf 26. The protruding portion 42a is made substantially the same as the gap between the rear surface of the product storage shelf 26 and the rear duct 27, and the portion below the protruding portion 42a in the inner rear heat insulating plate 42 is the rear duct 27 that guides the internal air downward. The gap between the back surface of the product storage shelf 26 and the back surface of the product storage shelf 26 is made larger than the clearance between the protrusions 42a so as not to disturb the function.

  The position 350 mm higher than the upper end surface of the rear duct 27 (the air suction port 27 a) has an opening on the rear surface of the product storage shelf 26, and is a position where air easily passes from the product storage shelf 26 toward the rear duct 27. is there.

  The position lower than the position 350 mm higher than the upper end surface of the rear duct 27 (the air suction port 27 a) has few openings on the rear surface of the commodity storage shelf 26, so that the lower end of the protruding portion 42 a is placed above the rear duct 27. If it is lower than the position 350 mm higher than the end surface (the air suction port 27a), the air path resistance (ventilation resistance) of the air from the product storage shelf 26 toward the rear duct 27 is increased more than necessary, and the product is heated. Variation in temperature will increase.

  In addition, since the space | interval of the upper end surface (the air inlet 27a) of the back surface duct 27 and the lower end of the protrusion part 42a changes with the back surface shape of the product storage shelf 26, and the positional relationship of the product storage shelf 26 and the back surface duct 27, It is not limited to a numerical value of 350 mm.

In the present embodiment, a foamed polystyrene plate having a thickness of the protruding portion 42a of about 30 mm and a thickness of the portion below the protruding portion 42a of about 15 mm is used for the inner back insulating plate 42.

  The depth dimension of the rear duct 27 of the left warehouse 38 is such that the depth of the rear duct 27 of the middle warehouse 39 and the right warehouse 40 is provided by providing the inner rear heat insulating plate 42 whose thickness is about 15 mm below the protrusion 42a. Considering that the depth dimension of the rear duct 27 of the left warehouse 38 is reduced and the wind path resistance (ventilation resistance) of the rear duct 27 of the left warehouse 38 is increased by being about 15 mm smaller than the dimension (about 30 mm). And the ventilation fan 29 of the left store | warehouse | chamber 38 is increasing the rotation speed (blowing amount) compared with the thing which does not provide the warehouse inner back surface heat insulation board 42. FIG.

  Foamed urethane foam and vacuum heat insulating material were cited as candidates for the material for the inner back insulating plate 42, but polystyrene foam was adopted. The reason is that the polystyrene foam is superior in elasticity and the production efficiency of the heat insulating plate than other heat insulating materials, and the vacuum heat insulating material is expensive and increases the cost.

  In order to hold the inner rear heat insulating plate 42 firmly with the left side heat insulating plate 33 and the heat insulating partition plate 36, the thickness of the inner rear heat insulating plate 42 is a cushion when the heat insulating partition plate 36 is used (installed). It is desirable to make it thicker than the thickness of the material 41.

  The operation and action of the vending machine configured as described above will be described below.

  Due to the cooling setting, the central warehouse 39 and the right warehouse 40 that have become the coolers suck the circulating air in the cabinet from the air suction port 27a on the upper end surface of the rear duct 27 by the action of the blower fan 29. The air sucked from the air inlet 27a exits the rear duct 27 from the air outlet 27b, is cooled by the internal heat exchanger 28 functioning as an evaporator of the refrigerant circuit, changes the course upward by the inner door 25, The product stored in the product storage shelf 26 is cooled. And the air which cooled the goods stored in the goods storage shelf 26 is again suck | inhaled by the air suction inlet 27a of the upper end surface of the back surface duct 27. FIG.

  In the left warehouse 38 which has become a warming warehouse by the heating setting, the air circulation air is sucked in from the air suction port 27a on the upper end surface of the rear duct 27 by the action of the blower fan 29. Air sucked from the air inlet 27a exits the rear duct 27 from the air outlet 27b, and the heater 30 (when the internal heat exchanger 28 functions as a condenser of the refrigerant circuit, internal heat exchange with the heater 30 is performed. The product is heated by the internal heat exchanger 28) instead of the container 28 or the heater 30, and the product stored in the product storage shelf 26 is heated by changing the course upward by the inner door 25.

  Here, in the left warehouse 38, as shown in FIG. 1, air flows from the location where the protruding portion 42a of the interior back heat insulating plate 42 is provided toward the air suction port 27a on the upper end surface of the rear duct 27. Therefore, it is difficult for the air in the upper part of the product storage shelf 26 to be sucked and the air sent by the blower fan 29 flows into the upper part of the product storage shelf 26 and circulates to the minimum. be able to.

  Moreover, the air of the upper part in the left store | warehouse | chamber 38 warehouse rises from the inner door 25 side at a slow speed, and goes to the back side through the ceiling surface side in a warehouse. And although it descends | falls perpendicularly | vertically along the back surface (front surface of the protrusion part 42a of the inner side back surface heat insulation board 42) from the upper part of the inner surface (front surface of the protrusion part 42a of the inner side heat insulation board 42), the left box 38 With the air curtain effect, the air flow that flows into the air suction port 27a formed on the upper end surface of the rear duct 27 from the region below the same height as the lower end of the protruding portion 42a of the inner rear heat insulating plate 42 in the chamber, As a result of the shielding of the downward flow, the air in the upper part of the left warehouse 38 stagnates at that position. Therefore, it is suppressed that the range of partial heating is expanded upward.

  In addition, when the left store | warehouse | chamber 38 has comprised the refrigerator by the cooling setting, it is suppressed that the range of partial cooling is expanded upwards.

  Therefore, the products in the lower part of the product storage shelf 26 can be concentrated and heated, and the operation time of the heat pump system that causes the heater 30 or the internal heat exchanger 28 to function as a condenser of the refrigerant circuit can be shortened. The power consumption of the vending machine can be reduced and energy can be saved.

  On the other hand, in the middle warehouse 39 and the right warehouse 40, no heat insulating plate is provided on the front surface of the rear heat insulating plate 32, and the upper side of the rear duct 27 is a space. The air sent by the blower fan 29 flows into the upper part of the product storage shelf 26 and circulates.

  As described above, the vending machine according to the present embodiment insulates the inner wall surface of the product storage box 23 with the front surface opened by at least the rear heat insulating plate 32, the left side heat insulating plate 33, and the right side heat insulating plate 34, and The product storage box 23 is divided into a heating box (left box 38) and a cooling box (middle box 39) by the heat insulating partition plate 36 in the left and right, and in each of the left box 38, the middle box 39, and the right box 40, Product storage shelf 26 for storing products, heating means (heater 30, internal heat exchanger 28 when internal heat exchanger 28 functions as a condenser of the refrigerant circuit) or cooling means (below product storage shelf 26) or cooling means ( The inside heat exchanger 28), the blower fan 29 that blows the air in front of or behind the heating means or the cooling means, and the bottom of the product storage shelf 26 between the product storage shelf 26 and the rear heat insulating plate 32. Up to the height of the bottom or approximately the middle in the vertical direction The rear duct 27 for guiding the extending-compartment air in the direction downwards, a vending machine provided.

  Then, the left and right end surfaces elastically contact the left side heat insulating plate 33 and the heat insulating partition plate 36 respectively on the front surface of the rear heat insulating plate 32 located on the rear surface of the heating chamber (left chamber 38), and the left side heat insulating plate. The inside rear heat insulating plate 42 elastically held between the heat insulating partition plate 36 and the heat insulating partition plate 36 is stacked so that the rear heat insulating plate 32 is not exposed to the heating chamber (left chamber 38).

  Furthermore, a portion above the air suction port 27 a formed on the upper end surface of the rear duct 27 in the inner rear heat insulating plate 42 is a predetermined dimension or more away from the rear surface of the product storage shelf 26, and the rear surface of the product storage shelf 26. The protrusion 42a is substantially the same as the gap between the rear duct 27 and the gap between the back of the product storage shelf 26 and the rear duct 27, and the portion below the protrusion 42a in the inner rear heat insulating plate 42 In order not to disturb the function of the back duct 27 that guides air downward, the gap between the back of the product storage shelf 26 is made larger than the clearance between the back of the product storage shelf 26 and the protruding portion 42a.

  In the above configuration, the product storage shelf 26 has a protrusion 42a that protrudes forward so as to be close to the back of the product storage shelf 26 above the rear duct 27, as compared with the conventional configuration without the protrusion 42a. Since the airflow resistance (ventilation resistance) of the space on the back side (the gap between the back surface of the product storage shelf 26 and the front surface of the protruding portion 42a) is large, the air in the upper part of the heating chamber (left chamber 38) is As a result, it becomes difficult to flow into the air suction port 27a on the upper end surface of the rear duct 27 through the gap between the rear surface of the product storage shelf 26 and the front surface of the protruding portion 42a. The upper air stagnates at that position.

In addition, the flow of air descending from the upper part of the rear surface of the heating chamber (left chamber 38) simply descends vertically along the front surface of the protruding portion 42a of the inner rear heat insulating plate 42, but the heating chamber (left chamber). 38) in the air curtain effect by the air flow flowing into the air suction port 27a formed in the upper end surface of the rear duct 27 from the region below the substantially same height as the lower end of the protruding portion 42a of the inner back heat insulating plate 42 in the interior, As a result of the downward flow being shielded, the upper air in the heating chamber (left chamber 38) stagnates at that position.

  Therefore, it is possible to minimize the air sent by the blower fan 29 from flowing into the upper part (or the upper part of the product storage shelf 26 and the substantially middle part in the vertical direction) in the heating cabinet (left warehouse 38) and circulating. Can do. As a result, since the range of partial heating is maintained appropriately, power consumption is reduced.

  Moreover, as a result of stacking the inner rear heat insulating plate 42 so that the rear heat insulating plate 32 is not exposed to the heating chamber (left chamber 38), the thickness of the heat insulating wall on the rear side of the heating chamber (left chamber 38) increases. As a result, the outflow of heat from the back surface of the heating chamber (left chamber 38) is reduced, resulting in a reduction in power consumption.

  In addition, as shown in FIG. 5, even if the heat insulating property is lowered at the portion between the back heat insulating plate 32 and the heat insulating partition plate 36, the central portion of the back heat insulating plate 32 is warped outwardly, Since the inside back heat insulating plate 42 blocks the portion where the heat insulating property between the back heat insulating plate 32 and the heat insulating partition plate 36 is reduced and the passage through which heat is transmitted from the heating chamber (left chamber 38), It is possible to suppress heat transfer from the inside of the heating cabinet (left warehouse 38) to the inside of the cooling cabinet (center warehouse 39), thereby reducing the power consumption of the vending machine.

  Note that the commodity storage 23 of the vending machine according to the present embodiment becomes a left warehouse 38 that becomes a heating warehouse, a middle warehouse 39 that becomes a cooling warehouse, and a cooling warehouse from the left by two heat insulating partition plates 36 and 37. Although the right compartment 40 is divided into right and left, it may be divided into right and left by a single heat insulating partition plate into a heating compartment and a cooling compartment.

(Embodiment 2)
FIG. 1 is a schematic longitudinal sectional view showing a cross section when the vending machine according to Embodiment 2 of the present invention is cut left and right at a left warehouse portion serving as a heating cabinet. 6 is a cross-sectional view of the vending machine according to the embodiment, taken along line AA in FIG. FIG. 7 is a cross-sectional view of the main body excluding the door of the vending machine according to the embodiment, taken along line BB in FIG. 8 is a cross-sectional view taken along the line CC of FIG. 1 of the main body excluding the door of the vending machine according to the embodiment.

  As shown in FIG. 1, the vending machine according to the second embodiment of the present invention is provided in a space defined on the upper side of a machine room 22 of a box-like vending machine having an open front and a main body 21. And the outer door 24 that opens and closes the front opening of the main body 1, and the inner door 25 of a heat insulating structure that is provided inside the outer door 24 so that the front opening of the product storage 23 can be opened and closed. A product storage shelf 26 that is installed in the product storage 23 and stores products, and an air suction port 27a on the upper end surface that is long in the vertical direction and is close to the substantially middle portion of the back of the product storage 23 in the vertical direction. A rear duct 27 having an air outlet 27 b on the front surface of the lower end is installed in the bottom of the bottom of the commodity storage 23.

  Further, an in-compartment heat exchanger 28 is arranged on the bottom surface of the commodity storage 23 in front of the air outlet 27b so as to face the air outlet 27b. Furthermore, the cold air cooled by the internal heat exchanger 28 in front of the internal heat exchanger 28 (when the internal heat exchanger 28 functions as a condenser of the refrigerant circuit, it is heated by the internal heat exchanger 28. A blower fan 29 for blowing the warm air) and a heater 30 that is energized and generates heat when the interior is heated in front of the blower fan 29 are installed.

  As shown in FIG. 1 and FIGS. 6 to 8, the commodity storage 23 of the vending machine according to the second embodiment of the present invention is made of a steel plate having an open front surface that constitutes the outer shell of the main body 21 of the vending machine. The outer box 21a, the bottom heat insulating plate 31 for partitioning the inside of the outer box 21a into upper and lower spaces, and the back, side and ceiling surfaces of the inner wall surface of the space above the bottom heat insulating plate 31 in the outer box 21a are respectively insulated. The rear heat insulating plate 32, the left side heat insulating plate 33, the right side heat insulating plate 34, and the top surface heat insulating plate 35 are included.

  In the bottom heat insulating plate 31, the back heat insulating plate 32, the left side heat insulating plate 33, the right side heat insulating plate 34, and the top surface heat insulating plate 35, a plate-like hard urethane foam, a plate-like vacuum heat insulating material, and a vacuum heat insulating material were embedded. Plate-like rigid urethane foam, or a laminate of plate-like rigid urethane foam and plate-like vacuum heat insulating material, is used properly according to the required heat insulation performance and cost, and the surface of the heat insulation plate is used as necessary A protective sheet is provided.

  Further, the product storage 23 is provided with a left warehouse 38 that can be switched from the left to a heating cabinet and a cooling cabinet, and a middle warehouse 39 that can be switched between the heating cabinet and the cooling cabinet, by two heat insulating partition plates 36 and 37. The right compartment 40 dedicated to cooling, which serves as a cooling compartment, is partitioned on the left and right.

  It should be noted that the internal heat exchanger 28 of the intermediate store 39 functions as an evaporator of the refrigerant circuit and does not function as a condenser. For this reason, when the heating is set, the inner warehouse 39 does not flow the refrigerant through the internal heat exchanger 28, and becomes a heating warehouse that heats the interior by the heater 30. The internal heat exchanger 28 of the right warehouse 40 also functions as an evaporator of the refrigerant circuit and does not function as a condenser. And the heater 30 is not installed in the right warehouse 40.

  The bottom heat insulating plate 31 insulates the space above the bottom heat insulating plate 31 that becomes the commodity storage 23 and the space below the bottom heat insulating plate 31 that becomes the machine room 22.

  The back heat insulating plate 32 is disposed along the back surface of the inner wall surface of the outer box 21 a that forms the space above the bottom heat insulating plate 31, and is formed on the inner wall surface of the outer box 21 a that forms the space above the bottom heat insulating plate 31. Insulate by covering almost the entire back surface with one sheet.

  The left side heat insulating plate 33 is disposed along the left side surface of the inner wall surface of the outer box 21 a that forms the space above the bottom heat insulating plate 31 so that the rear end surface abuts the back heat insulating plate 32. The left side surface of the inner wall surface of the outer box 21a that forms the upper space of 31 is covered with one sheet for heat insulation.

  The right side heat insulating plate 34 is disposed along the right side surface of the inner wall surface of the outer box 21 a that forms the space above the bottom heat insulating plate 31 such that the rear end surface abuts against the rear heat insulating plate 32. The right side surface of the inner wall surface of the outer box 21a that forms the upper space of 31 is covered with one sheet for heat insulation.

  The top surface heat insulating plate 35 is disposed so that the lower surface of the rear end portion is in contact with the upper end surface of the rear heat insulating plate 32 along the ceiling surface of the inner wall surface of the outer box 21 a that forms the space above the bottom heat insulating plate 31. Then, the entire ceiling surface of the inner wall surface of the outer box 21a that forms the space above the bottom heat insulating plate 31 is covered with one sheet for heat insulation.

  The heat insulating partition plate 36 is a heat insulating plate that partitions the left chamber 38 serving as a heating chamber and the middle chamber 39 serving as a cooling chamber, and a rear end surface that contacts the bottom heat insulating plate 31 and a rear heat insulating plate 32. And a cushioning material 41 made of polyethylene foam on the upper end surface in contact with the top heat insulating plate 35.

  The heat insulating partition plate 37 is a heat insulating plate that partitions the middle warehouse 39 serving as a refrigerator and the right warehouse 40 serving as a refrigerator, and includes a lower end surface that contacts the bottom heat insulating plate 31 and a rear end surface that contacts the rear heat insulating plate 32. A cushion material 41 made of polyethylene foam is provided on the upper end surface in contact with the top heat insulating plate 35.

A heat insulating foam 27c is attached to the rear side of each of the left warehouse 38, the middle warehouse 39, and the right warehouse 40 to fill the gaps between the heat insulating partition plates 36 and 37 or the left side heat insulating plate 33 or the right side heat insulating plate 34 on the side surfaces. A rear duct 27 having an air inlet 27a at the upper end and an air outlet 27b at the lower front surface is provided.

  The rear duct 27 extends in the vertical direction from the bottom of the cabinet between the product storage shelf 26 and the back heat insulating plate 32 to the height of the lower part of the product storage shelf 26 or a substantially middle portion in the vertical direction, and guides the air in the cabinet downward. Is.

  In the present embodiment, the left and right end surfaces elastically contact the left side heat insulating plate 33 and the heat insulating partition plate 36 on the front surface of the rear heat insulating plate 32 positioned on the rear surface of the left warehouse 38, The inside rear heat insulating plate 42 elastically sandwiched between the heat insulating partition plates 36 is overlapped so that the rear heat insulating plate 32 is not exposed to the left chamber 38.

  In addition, the left and right end surfaces elastically contact the heat insulating partition plate 36 and the heat insulating partition plate 37 on the front surface of the rear heat insulating plate 32 located on the back surface of the inner warehouse 39, and the heat insulating partition plate 36 and the heat insulating partition plate 37 The inside back heat insulating plate 42 that is elastically sandwiched between the back heat insulating plates 32 is stacked so that the back heat insulating plate 32 is not exposed to the inside store 39.

  In addition, the left and right end surfaces elastically contact the right side heat insulating plate 34 and the heat insulating partition plate 37 on the front surface of the rear heat insulating plate 32 positioned on the rear surface of the right warehouse 40, so that the right side heat insulating plate 34 and the heat insulating partition plate 37 are in contact. The inside back heat insulating plate 42 that is elastically sandwiched between the back heat insulating plates 32 is stacked so that the back heat insulating plate 32 is not exposed to the right store 40.

  The inside rear heat insulating plate 42 is arranged between the rear heat insulating plate 32 and the rear duct 27.

  The portion above the air suction port 27a formed on the upper end surface of the rear duct 27 in the inner rear heat insulating plate 42 by a predetermined dimension (350 mm in this embodiment) or more is a gap with the rear surface of the product storage shelf 26. The protruding portion 42a is made substantially the same as the gap between the rear surface of the product storage shelf 26 and the rear duct 27, and the portion below the protruding portion 42a in the inner rear heat insulating plate 42 is the rear duct 27 that guides the internal air downward. The gap between the back surface of the product storage shelf 26 and the back surface of the product storage shelf 26 is made larger than the clearance between the protrusions 42a so as not to disturb the function.

  The position 350 mm higher than the upper end surface of the rear duct 27 (the air suction port 27 a) has an opening on the rear surface of the product storage shelf 26, and is a position where air easily passes from the product storage shelf 26 toward the rear duct 27. is there.

  The position lower than the position 350 mm higher than the upper end surface of the rear duct 27 (the air suction port 27 a) has few openings on the rear surface of the commodity storage shelf 26, so that the lower end of the protruding portion 42 a is placed above the rear duct 27. If it is lower than a position 350 mm higher than the end surface (the air suction port 27a), the air path resistance (ventilation resistance) of the air from the product storage shelf 26 toward the rear duct 27 is increased more than necessary, and the product temperature varies. Will become bigger.

  In addition, since the space | interval of the upper end surface (the air inlet 27a) of the back surface duct 27 and the lower end of the protrusion part 42a changes with the back surface shape of the product storage shelf 26, and the positional relationship of the product storage shelf 26 and the back surface duct 27, It is not limited to a numerical value of 350 mm.

  In the present embodiment, a foamed polystyrene plate having a thickness of the protruding portion 42a of about 30 mm and a thickness of the portion below the protruding portion 42a of about 15 mm is used for the inner back insulating plate 42.

The depth dimension of the rear duct 27 is reduced by about 15 mm due to the provision of the inside rear heat insulating plate 42 having a thickness of about 15 mm below the protruding portion 42a.
In consideration of the fact that the depth dimension of the rear duct 27 is reduced and the wind path resistance (ventilation resistance) of the rear duct 27 is increased, the blower fan 29 has a rotational speed (air flow rate) as compared with the case where the inner rear heat insulating plate 42 is not provided. ) Is increasing.

  Foamed urethane foam and vacuum heat insulating material were cited as candidates for the material for the inner back insulating plate 42, but polystyrene foam was adopted. The reason is that the polystyrene foam is superior in elasticity and the production efficiency of the heat insulating plate than other heat insulating materials, and the vacuum heat insulating material is expensive and increases the cost.

  In order to hold the inside rear heat insulating plate 42 between the left side heat insulating plate 33, the right side heat insulating plate 34, and the heat insulating partition plates 36 and 37, the thickness of the inner rear heat insulating plate 42 is set to the heat insulating partition plate. It is desirable to make it thicker than the thickness of the cushion material 41 when 36 is used (installed).

  The operation and action of the vending machine configured as described above will be described below.

  Due to the cooling setting, the central warehouse 39 and the right warehouse 40 that have become the coolers suck the circulating air in the cabinet from the air suction port 27a on the upper end surface of the rear duct 27 by the action of the blower fan 29. The air sucked from the air inlet 27a exits the rear duct 27 from the air outlet 27b, is cooled by the internal heat exchanger 28 functioning as an evaporator of the refrigerant circuit, changes the course upward by the inner door 25, The product stored in the product storage shelf 26 is cooled. And the air which cooled the goods stored in the goods storage shelf 26 is again suck | inhaled by the air suction inlet 27a of the upper end surface of the back surface duct 27. FIG.

  In the left warehouse 38 which has become a warming warehouse by the heating setting, the air circulation air is sucked in from the air suction port 27a on the upper end surface of the rear duct 27 by the action of the blower fan 29. Air sucked from the air inlet 27a exits the rear duct 27 from the air outlet 27b, and the heater 30 (when the internal heat exchanger 28 functions as a condenser of the refrigerant circuit, internal heat exchange with the heater 30 is performed. The product is heated by the internal heat exchanger 28) instead of the container 28 or the heater 30, and the product stored in the product storage shelf 26 is heated by changing the course upward by the inner door 25.

  Here, in each of the left warehouse 38, the middle warehouse 39, and the right warehouse 40, as shown in FIG. 1, the upper end surface of the rear duct 27 starts from the location where the protruding portion 42a of the inner rear heat insulating plate 42 is provided. Since it is difficult for air to flow in toward the air suction port 27a, air in the upper part of the product storage shelf 26 is difficult to be sucked, and the air sent by the blower fan 29 is Flowing up to the top and circulating can be minimized.

  Moreover, the air of the upper part in each store | warehouse | chamber of the left store | warehouse | chamber 38, the center store | warehouse | chamber 39, and the right store | warehouse | chamber 40 rises from the inner door 25 side at a slow speed, and goes to the back side through the ceiling surface side in a store | warehouse | chamber. And it descends perpendicularly along the back surface (front surface of the projecting portion 42a of the inner back insulating plate 42) from the upper part of the rear surface (front surface of the projecting portion 42a of the inner back insulating plate 42). Due to the air flow that flows into the air suction port 27a formed on the upper end surface of the rear duct 27 from the region that is substantially the same height or lower as the lower end of the protruding portion 42a of the inner rear heat insulating plate 42, the downward flow is caused by the air curtain effect. As a result, the air in the upper part of the cabinet is stagnated at that position. Therefore, it is suppressed that the range of partial heating or partial cooling is expanded upward.

  In addition, when the left store | warehouse | chamber 38 has comprised the refrigerator by the cooling setting, it is suppressed that the range of partial cooling is expanded upwards.

Therefore, the products at the bottom of the product storage shelf 26 can be concentrated and heated or cooled,
It is possible to shorten the operation time of the heater 30 or the heat pump system (refrigeration cycle), reduce the power consumption of the vending machine, and save energy.

  As described above, the vending machine according to the present embodiment insulates the inner wall surface of the product storage box 23 with the front surface opened by at least the rear heat insulating plate 32, the left side heat insulating plate 33, and the right side heat insulating plate 34, and The product storage box 23 is divided into a heating box (left box 38) and a cooling box (center box 39, right box 40) by the heat insulating partition plates 36 and 37, and the left box 38, the center box 39, and the right box 40. The product storage shelf 26 for storing products in each of the cabinets, and the heating means (the heater 30 and the internal heat exchanger 28 when the internal heat exchanger 28 functions as a condenser of the refrigerant circuit) below the product storage shelf 26 28) or cooling means (internal heat exchanger 28), a blower fan 29 for blowing air forward or rearward of the heating means or cooling means forward, and the bottom of the internal space between the product storage shelf 26 and the rear heat insulating plate 32 To the bottom of the product storage shelf 26 or in the vertical direction The rear duct 27 to the height of the part guiding the extending-compartment air vertically downward, a vending machine provided.

  And the left and right end surfaces are the left side heat insulating plate 33 and the heat insulating partition plate 36 or the heat insulating partition plate 36 and the heat insulating partition on the front surface of the rear heat insulating plate 32 located on the back surface of the left store 38, the middle store 39, and the right store 40. The plate 37 or the right side heat insulating plate 34 and the heat insulating partition plate 37 are elastically abutted to the left side heat insulating plate 33 and the heat insulating partition plate 36, or the heat insulating partition plate 36 and the heat insulating partition plate 37, or the right side heat insulating plate. The inside rear heat insulating plate 42 that is elastically sandwiched between the heat insulating partition plate 37 and the heat insulating partition plate 37 is stacked so that the rear heat insulating plate 32 is not exposed inside the storage.

  Furthermore, a portion above the air suction port 27 a formed on the upper end surface of the rear duct 27 in the inner rear heat insulating plate 42 is a predetermined dimension or more away from the rear surface of the product storage shelf 26, and the rear surface of the product storage shelf 26. The protrusion 42a is substantially the same as the gap between the rear duct 27 and the gap between the back of the product storage shelf 26 and the rear duct 27, and the portion below the protrusion 42a in the inner rear heat insulating plate 42 In order not to disturb the function of the back duct 27 that guides air downward, the gap between the back of the product storage shelf 26 is made larger than the clearance between the back of the product storage shelf 26 and the protruding portion 42a.

  In the above configuration, the product storage shelf 26 has a protrusion 42a that protrudes forward so as to be close to the back of the product storage shelf 26 above the rear duct 27, as compared with the conventional configuration without the protrusion 42a. Since the air path resistance (ventilation resistance) of the space on the back side (the gap between the back surface of the product storage shelf 26 and the front surface of the protruding portion 42a) is large, the air in the upper part of the cabinet is behind the back of the product storage shelf 26. As a result, it becomes difficult to flow into the air suction port 27a on the upper end surface of the rear duct 27 through the gap between the projection 42a and the front surface of the projecting portion 42a.

  In addition, the flow of air descending from the upper part of the back surface in the warehouse simply descends vertically along the front surface of the protrusion 42a of the interior back heat insulating plate 42, but the protrusion of the interior back heat insulating plate 42 in the interior. As a result of the air curtain effect blocking the downward flow by the air flow flowing into the air suction port 27a formed in the upper end surface of the rear duct 27 from a region substantially equal to or lower than the lower end of 42a, the upper part in the warehouse The air stays at that position.

  Therefore, it is possible to minimize the air sent by the blower fan 29 from flowing into the upper part (or the upper part of the product storage shelf 26 and the substantially middle part in the vertical direction) and circulating. As a result, the range of partial heating or partial cooling is properly maintained, so that power consumption is reduced.

  In addition, as a result of stacking the inner rear heat insulating plate 42 so that the rear heat insulating plate 32 is not exposed in the chamber, the thickness of the heat insulating wall on the rear side in the chamber increases, and the outflow of heat from the rear surface in the chamber is prevented. As a result, the power consumption is reduced.

  Further, even if the central portion of the back heat insulating plate 32 is warped so as to protrude outward and the heat insulating property is lowered at the portion between the back heat insulating plate 32 and the heat insulating partition plate 36, the inner back heat insulating plate 42 is The passage through which heat is transferred from the heating chamber (left chamber 38) to the cooling chamber (center chamber 39) through the portion where the heat insulating property between the rear heat insulating plate 32 and the heat insulating partition plates 36 and 37 is lowered is blocked. As a result, heat transfer from the inside of the heating cabinet (left warehouse 38) to the cooling cabinet (center warehouse 39) can be suppressed, thereby reducing the power consumption of the vending machine.

  Note that the commodity storage 23 of the vending machine according to the present embodiment becomes a left warehouse 38 that becomes a heating warehouse, a middle warehouse 39 that becomes a cooling warehouse, and a cooling warehouse from the left by two heat insulating partition plates 36 and 37. Although the right compartment 40 is divided into right and left, it may be divided into right and left by a single heat insulating partition plate into a heating compartment and a cooling compartment.

(Embodiment 3)
FIG. 9: is a schematic longitudinal cross-sectional view which shows the cross section at the time of cut | disconnecting the vending machine in Embodiment 3 of this invention right and left in the part of the left warehouse used as a heating cabinet.

  In the present embodiment, the inside rear heat insulating plate 42 is made of two polystyrene foam plates having different thicknesses of about 15 mm, and the relatively small foamed polystyrene plate that becomes the protruding portion 42a on the upper front surface of the relatively large foamed polystyrene plate. Are integrated with an adhesive. Since other configurations are the same as those in the first embodiment or the second embodiment, description of common parts is omitted.

  In the present embodiment, by stacking a relatively small foamed polystyrene plate on the upper front surface of the relatively large foamed polystyrene plate and integrating them with an adhesive, it is possible to easily obtain the inside rear heat insulating plate 42 having the protruding portion 42a. .

(Embodiment 4)
FIG. 10: is a schematic longitudinal cross-sectional view which shows the cross section when the vending machine in Embodiment 4 of this invention is cut | disconnected left and right in the part of the left warehouse used as a heating store | warehouse | chamber.

  In the present embodiment, the inside rear heat insulating plate 42 is composed of a foamed polystyrene plate of about 30 mm and a foamed polystyrene plate of about 15 mm, and the lower end surface of the foamed polystyrene plate of about 30 mm that becomes a protruding portion on the upper end surface of the foamed polystyrene plate of about 15 mm. It is a stacked structure. Since other configurations are the same as those in the first embodiment or the second embodiment, description of common parts is omitted.

  In the present embodiment, it is necessary to prepare two types of polystyrene foam plates having different thicknesses. It is possible to maintain a structure in which the lower end surface of the approximately 30 mm foamed polystyrene plate serving as the protruding portion is superimposed on the upper end surface.

  As described above, according to the present invention, the range of partial heating or partial cooling is appropriately maintained, the heat insulating wall on the back side is thickened, heat transfer from the heating chamber to the cooling chamber is suppressed, and the vending machine Therefore, it is suitable for a beverage vending machine that stores and sells products to be sold warm and products to be cooled and sold in adjacent cabinets.

23 Product storage 26 Product storage shelf 27 Rear duct 27a Air inlet 28 Internal heat exchanger 29 Blower fan 30 Heater 32 Rear heat insulating plate 33 Left side heat insulating plate 34 Right side heat insulating plate 36, 37 Heat insulating partition plate 38 Left chamber ( Heating chamber)
39 Central storage (cooling storage)
40 Right warehouse (cooling cabinet)
42 Inside rear heat insulating plate 42a Projection

Claims (3)

The inner wall surface of the product storage with the front opened is insulated by at least a rear heat insulating plate and a side heat insulating plate, and further, the product storage is divided into a heating chamber and a cooling chamber by a heat insulating partition plate, and the heating chamber A product storage shelf for storing products in the inside and the cooling chamber, a heating means or cooling means below the product storage shelf, a blower fan for blowing forward air in front of or behind the heating means or the cooling means, Back ducts that extend in the vertical direction from the bottom of the cabinet between the product storage shelf and the back heat insulating plate to the height of the lower part of the product storage shelf or a substantially middle portion in the vertical direction are respectively provided to guide the air in the cabinet downward. Vending machine,
Left and right end surfaces are elastically in contact with the side surface heat insulating plate and the heat insulating partition plate, respectively, on the front surface of the rear heat insulating plate located on the rear surface of the heating chamber, and are elastic to the side heat insulating plate and the heat insulating partition plate. The inner heat insulation board sandwiched between the two is stacked so that the rear heat insulation board is not exposed to the heating cabinet,
A portion above the air suction port formed at the upper end surface of the rear duct in the inner rear heat insulating plate has a gap of a predetermined dimension or more between the rear surface of the product storage shelf and the rear surface of the product storage shelf. A protrusion that is substantially the same as the gap with the duct or narrower than the gap between the back of the product storage shelf and the back duct,
The portion below the protruding portion of the inner rear heat insulating plate has a gap with the rear surface of the product storage shelf so as not to hinder the function of the rear duct that guides the air in the storage downward. A vending machine characterized by being larger than the gap between the back surface and the protruding portion. The vending machine according to claim 1, wherein the inner rear heat insulating plate is composed of two heat insulating plates having different sizes, and a relatively small heat insulating plate is overlapped and integrated on an upper front surface of a relatively large heat insulating plate. Machine. The vending machine according to claim 1, wherein the inner back heat insulating plate is composed of two heat insulating plates having different thicknesses, and a relatively thick heat insulating plate is stacked on a relatively thin heat insulating plate. Machine.

Images