JP5504760B2 - vending machine - Google Patents

Description

  The present invention relates to a vending machine that cools and heats products such as beverages in containers such as cans, bottles, packs, and PET bottles for sale.

  There is a strong demand for energy saving in vending machines due to global warming and carbon dioxide emission reduction issues. In order to save energy, it is useful to reinforce the heat insulation structure of the vending machine and to partially cool and heat only necessary products in the warehouse. In order to partially cool and heat only necessary products in the warehouse, it is a well-known technique to provide a short rear duct on the back of the warehouse, and among them, the upper part of the rear duct having an opening on the upper surface. It is also known to improve the efficiency of partial cooling or partial heating by providing an air passage shielding plate (for example, Patent Document 1).

  As shown in FIG. 13, the vending machine described in Patent Document 1 is provided with a cooling / heating device 3 and a fan 4 at the lower part of a main body 2 of the vending machine that stores the product storage device 1, and an upper part at the back. A return duct 5 having an opening and an air path shielding plate 6 having a U-shaped cross section having closed openings 6 a and 6 b above the return duct 5. According to this configuration, as indicated by the arrows in the figure, the circulation path of the air in the product storage case 1 blocks the path from the rear upper part of the product storage device 1 to the return duct 5 so that only the necessary amount is efficiently obtained. The product can be cooled or heated.

JP 2000-182133 A

  In this type of vending machine, the cooling / heating area inside the cabinet is fixed at the bottom, so if the sales frequency is high, there is a possibility of selling products that are stored in the upper area and are insufficiently cooled or heated There is. In addition, if the return duct opening is moved upwards and the cooling / heating area is set to the upper part, if the sales frequency is low, it will be used to cool or heat products that will not be sold for a long time. There is a problem in that power consumption increases because the approach heat is promoted. Therefore, it is conceivable to provide a plurality of return duct openings in the vertical direction and adjust the cooling / heating area by opening and closing the openings as appropriate, but this makes the return duct opening and closing mechanism complicated. This will cause high costs.

  Therefore, the present invention has been made in view of the above points, and provides a vending machine that appropriately adjusts the cooling / heating area with a simple structure and reduces power consumption in accordance with the sales frequency. With the goal.

The vending machine according to claim 1 of the present invention includes a product storage rack for transporting products stored side by side up and down in a cabinet of the cabinet in order from the lowest order in accordance with the sales order, and in the store according to the operation mode. A cooling / heating unit with a fan that circulates and blows air that is cooled or heated to cool or heat the product, and is located on the back of the cabinet connected to the wind tunnel of the cooling / heating unit. A duct having a duct, a shielding member for preventing the flow of a circulated flow of cooled or heated air above the duct, and extending from a lower part to an upper part of the duct and contacting the shielding member to move the shielding member upward. causes opened, the automatic vending machine comprising an operating rod which closes the shielding member in a horizontal direction by spaced apart from the shield member, this vertically moving the operating rod Accordingly, characterized in that the shield member can be freely movable.

A vending machine according to claim 2 of the present invention is the vending machine according to claim 1, wherein the shielding member opens and closes in multiple stages.
A vending machine according to a third aspect of the present invention is the vending machine according to the first aspect, wherein the shielding member is continuously opened and closed.

According to the vending machine according to claim 1 of the present invention, the shielding member that prevents the flow of the circulating flow of the cooled or heated air at the upper part of the duct, and the shielding member is moved upward by contacting the shielding member. And an operating rod that horizontally closes the shielding member by separating from the shielding member, and the shielding member is movable by vertically moving the operating rod extending from the lower part of the duct to the upper part. Therefore, when the sales frequency is low, the shielding member can be positioned so as to block the flow of air from the upper part of the interior, so that the cooling / heating area in the interior is narrowed. To reduce power consumption. In addition, when the sales frequency is high, the shielding member can be positioned in such a manner that the circulating air flow from the upper part of the warehouse flows into the duct side, so that the cooling / heating area is widened and sales opportunities are not missed.

According to the vending machine according to the second aspect of the present invention, it is possible to cope with the details.
According to the vending machine according to the third aspect of the present invention, it is possible to deal with the situation more finely.

1 is a perspective view showing a vending machine according to Embodiment 1 of the present invention. Sectional drawing of the vending machine shown in FIG. The perspective view of the back duct of the vending machine shown in FIG. It is the schematic of the apparatus which drives the shielding member of the vending machine shown in FIG. 1, (a) is a side view, (b) Front view. 1 is a control block diagram of a vending machine according to Embodiment 1 of the present invention. The principal part flowchart of the vending machine which concerns on Example 1 of this invention. It is an operation | movement figure of the back surface duct shown in FIG. 3, (a) is an operation | movement figure at the time of a shielding board closing, (b) is an operation | movement figure at the time of a shielding board open | release. The upper part perspective view of the vending machine back surface duct which concerns on Example 2 of this invention. The upper part perspective view of the vending machine back surface duct concerning Example 3 of the present invention. FIG. 10 is an operation diagram of the rear duct shown in FIG. 9, (a) is an operation diagram when the upper shielding plate is closed and a lower shielding plate is opened, and (b) is an operation diagram when the upper shielding plate is opened and the lower shielding plate is closed. (C), Operation | movement figure at the time of an upper shielding board and a lower shielding board open | released. The upper part perspective view of the vending machine back surface duct based on Example 4 of this invention. FIG. 12 is an operation diagram of the rear duct shown in FIG. 11, (a) is an operation diagram when the upper shielding plate is closed and a lower shielding plate is opened, (b) is an operation diagram when the upper shielding plate and the lower shielding plate are closed, c) Operation diagram when the upper shielding plate and the lower shielding plate are opened. Sectional drawing of the vending machine of a prior art.

Example 1
Exemplary embodiments of the present invention will be described below in detail with reference to the accompanying drawings. The first embodiment will be described with reference to FIGS. 1-7. Note that the present invention is not limited to these embodiments.

  In the perspective view of the vending machine according to the first embodiment of the present invention shown in FIG. 1 and the cross-sectional view of the vending machine shown in FIG. 2, the vending machine is formed as a rectangular heat insulator having an open front surface. The main body cabinet 10, the outer door 20 and the inner door 30 provided on the front surface thereof, and the inside of the main body cabinet 10 are partitioned into two upper and lower sections by the bottom plate 11, and the upper portion is partitioned by, for example, two heat insulating partition plates 40w. The three independent product storage units 40a, 40b, and 40c, the machine room 50 that stores the cooling / heating unit 60 that cools or heats the product storage units 40a, 40b, and 40c in the lower part, and the inside of the outer door 20 are arranged. And a control means 90 for controlling the cooling and heating operation of the vending machine by the temperature sensors Ta, Tb, Tc in the product storages 40a, 40b, 40c. .

  More specifically, the outer door 20 is used to open and close the front opening of the main body cabinet 10 and is not shown in the figure. Product display room, selection button for selecting the product to be sold, money slot for inserting money, product outlet 21 for taking out the paid-out product, etc. Is arranged.

  The inner door 30 opens and closes the front surfaces of the product storage units 40a, 40b, and 40c to keep the products in the interior warm. The inner door 30 is a box-shaped structure that is divided into upper and lower stages and has a heat insulator inside. The upper inner door 30a is pivotally supported by the outer door 20 at one end and engaged with the outer door 20 at the other end, and the upper inner door 30a is opened simultaneously with the opening of the outer door 20 to replenish the goods. To make it easier. The lower inner door 30b is in a closed state when one end is pivotally supported on the main body cabinet 10 and the other end is hooked on the main body cabinet 10 with a latch (not shown) and the outer door 20 is opened. This prevents the cooled or heated air in the product storage boxes 40a, 40b, and 40c from flowing out, and can be opened as needed during maintenance.

  The product storage units 40a, 40b, and 40c are for storing products such as canned beverages and beverages containing plastic bottles while maintaining the desired temperature, and the capacity of the storage units is the product storage units 40c, 40a. , 40b in a large manner. In the first embodiment, the product storage 40c is exclusively used for cooling, and the product storages 40a and 40b are also used for cooling and heating. The product storage racks 40a, 40b, and 40c store the products in a manner that they are arranged in the vertical direction, and are provided with a product storage rack R that includes a product delivery mechanism for discharging the products one by one in response to a sales signal. There is a product carry-out chute 42 for carrying the discharged product S to the sales port 21 of the outer door through a carry-out door 31 installed in the inner door 30b.

  The cooling / heating unit 60 includes a compressor 61, a condenser 62, expansion valves 63 and 64, an external heat exchanger 76, an accumulator 69, and internal heat exchangers 65 a, 65 b, and 65 c that extend across the bottom plate 11. Are connected to each other by refrigerant piping and heaters 66h and 66h installed in the cabinet. Cooling or heating is performed by blowing air from the fans 65f, 65f, 65f installed behind the internal heat exchangers 65a, 65b, 65c.

  The refrigerant circulation circuit compresses the refrigerant with the compressor 61, condenses the compressed refrigerant with the condenser 62, adiabatically expands with the expansion valve 63, and sends it to the internal heat exchangers 65a, 65b, 65c. The internal heat exchangers 65a, 65b, 65c evaporate and cool the interior, and then return to the compressor 61 via the accumulator 69, and the refrigerant is compressed by the compressor 61. The cooled refrigerant is sent to the internal heat exchangers 65a and 65b to condense and heat the interior, further condensed by the external heat exchanger 76, adiabatically expanded by the expansion valve 64, and transferred to the internal heat exchanger 65c. Then, after evaporating and cooling the inside of the cabinet, a cooling heating (heat pump) circuit is formed that returns to the compressor 61 via the accumulator 69. When only one of the internal heat exchangers 65a and 65b is used for heating, the other is used for cooling by evaporating the refrigerant in the same manner as the internal heat exchanger 65c.

As the compressor 61, a compressor capable of high-pressure compression capable of heat pump operation is used.
A fan 62f is installed at the rear of the condenser 62. The fan 62f sucks air from the front opening (left side in FIG. 2) of the machine room 50, sucks heat of condensation by the condenser 62, and also compresses the compressor 61. The exhaust heat is absorbed and exhausted to the rear opening (right side in FIG. 2) of the machine room 50.

  The accumulator 69 is a sealed container for flowing the refrigerant evaporated from the internal heat exchangers 65 a, 65 b and 65 c, separating the gas and liquid to store the liquid refrigerant, and returning the gas refrigerant to the compressor 61.

  The heaters 66h and 66h are installed in front of the internal heat exchangers 65a and 65b, and the internal heat exchangers 65a and 65b are not used when the internal side of the cooling side is cooled to an appropriate temperature in the heat pump operation. In addition, the operation of the refrigerant circuit is stopped and the product storages 40a and 40b are heated.

  The internal heat exchangers 65a, 65b, 65c are installed in the lower part of the product storages 40a, 40b, 40c, and a fan 65f is installed behind them. The internal heat exchangers 65a, 65b, 65c, the heaters 66h, 66h, and the fan 65f are surrounded by the wind tunnels 77a, 77b, 77c, and the fronts of the wind tunnels 77a, 77b, 77c are opened inside the storage room. The rear side is installed in communication with the rear ducts 70a, 70b, and 70c. Movable shielding plates 81a, 81b, and 81c are installed on the upper portions of the rear ducts 70a, 70b, and 70c, and the shielding plate movable devices 80, 80, and 80 that move the movable shielding plates 81a, 81b, and 81c are part of them. It is installed via the inside of the back ducts 70a, 70b, 70c.

The rear ducts 70a, 70b, and 70c are configured by main bodies 71a, 71b, and 71c made of a plate-like member having a U-shaped cross section, and are laid on the rear surface of the cabinet 10, and suck into the front wall near the upper part It has openings 72a, 72b, 72c and blowout openings 73a, 73b, 73c connected to the wind tunnels 77a, 77b, 77c at the bottom. The rear ducts 70a, 70b, 70c and the wind tunnels 77a, 77b, 77c form an air passage, and the fan 65f cools or heats the internal heat exchangers 65a, 65b, 65c and the heaters 66h, 66h. The air in the product storage is cooled by blowing the air from the wind tunnels 77a, 77b, 77c to the product S in the product storage and collecting it from the rear ducts 70a, 70b, 70c as shown by the arrow A in FIG. Alternatively, heating is performed. In addition, holes 71a, 71b, and 71c through which an operation rod 84 described later is passed are formed in the upper surfaces of the rear ducts 70a, 70b, and 70c.

  The shield plate movable device 80 is for driving the movable shield plates 81a, 81b, 81c. Since the shielding plate movable device 80 installed in the product storage 40a, 40, 40c is installed by the product storage 40a, 40, 40c having different width dimensions, and the structure thereof is substantially the same. In the following description, the reference numerals 81a, 81b, 81c of the movable shielding plates are 81, the rear ducts 70a, 70b, 70c are 70, etc. To do.

  As shown in FIGS. 3 and 4, the shielding plate movable device 80 is electrically driven to support plates 82 and 82 that support both ends of the movable shielding plate 81, an operating rod 84 that drives the movable shielding plate 81, and the operating rod 84. A driving motor 86 to be operated, a positioning sensor 87 for detecting the origin position of the operating rod 84, and a knob 88 for manually driving the operating rod 84.

  The movable shielding plate 81 is a steel plate member, and is pivotally supported by a root portion by a pin 82p and a pin 82p. The rotating tip of the movable shielding plate 81 is positioned up to the vicinity of the end surface of the rack R when in the horizontal position, and at this time, the flow indicated by the arrow B in FIG.

  The support plates 82, 82 are thin sheet metal extending upward from the rear part of the side plate of the main body 71, and pins 82 p that pivotally support both ends of the movable shielding plate 81 are inserted on the front end side thereof. The springs 82s and 82s are wound around the pins 82p and 82p in such a manner that the free end side of the movable shielding plate 81 is biased in a direction of rotating from the top to the bottom when viewed from the front side (left side in the figure). Stoppers 83 and 83 are fixed to the support plates 82 and 82 at positions where the plate 81 is locked in the horizontal direction.

  The operation rod 84 is a plate-like member having a rectangular cross section, and a claw portion 84h formed in a mode in which the upper portion is slightly inclined, and a rack 84r is provided on the lower side surface. At the center of the operation rod 84, a marker 84m for detecting the origin is provided on the front surface, a slider pin 84s and a knob 88 are provided extending in the side surface direction. The operation rod 84 is supported by upper and lower guides (not shown) in such a manner that it can move in the vertical direction.

  The drive motor 86 moves the operating rod 84 in the vertical direction and opens and closes the shielding plate 81. The drive motor 86 includes a reduction gear 86g and a motor main body 86m, and a pinion that meshes with the rack 84r at the tip of the shaft of the reduction gear 86g. 86p is installed.

The positioning sensor 87 is for obtaining the origin of the operating rod 84 and is installed on the upper portion of the drive motor 86.
The knob 88 is a cylindrical pin, and is used to manually drive the operation rod 84 when the drive motor 86 is turned off.

  The control unit 90 has a CPU and a memory inside, and incorporates a motor control unit 90m that controls the drive motor 86. As shown in the block diagram of the main part of the control circuit in FIG. 5, the motor control unit 90m includes a movable shielding plate mode SW91, a shielding plate drive SW92, a shielding plate temperature setting SW93, a sales counter 94, temperature sensors Ta, Tb, Tc, A signal from the positioning sensor 87 is input to control a motor 86 that drives the movable shielding plate 81.

  The movable shielding plate mode SW91 is a manual operation mode in which the movable shielding plate 81 is manually operated, and sets a target temperature in the cabinet, so that the temperature detected by the temperature sensor T becomes the target value. A switch (SW) for switching between three modes: a manual command mode for operating the plate 81, a target value of the temperature sensor T according to the sales frequency, and an automatic control mode for operating the movable shielding plate 81 so as to be the target value. It is.

The shielding plate drive SW 92 operates and sets the inclination of the movable shielding plate 81 by rotating the drive motor 86 forward and backward in the manual operation mode and driving the operation rod 84 up and down.
The temperature setting SW 93 is a numeric key switch for inputting target values of the temperature sensors Ta, Tb, and Tc for appropriately controlling the position of the movable shielding plate 81 in the manual command mode.

  The sales counter 94 is used in the automatic control mode, and counts the sales of products stored in each store. The counted number of sales is integrated every time by the control device 90 and stored as a sales frequency in a predetermined memory.

The temperature sensors Ta, Tb, and Tc are installed on the upper surfaces of the wind tunnels 77a, 77b, and 77c in the lower part of the cabinet, and detect the temperature in the cabinet.
With such a configuration, when the control is started when the vending machine is started, the movable shielding plate 81 can be set. That is, as shown in the main part flowchart of FIG. 6, the drive motor 86 rotates forward and backward and aligns to the zero point until the origin sensor signal is obtained by the positioning sensor 87 (step S1). Next, when the movable shielding plate mode SW91 is set to the manual operation mode (step S2, branch 1), the shielding plate driving SW92 is operated (step S11), so that the movable shielding plate 81 has a desired angle. 84 is driven (step S12). Specifically, when the sales frequency is low, the movable shielding plate 81 is in the horizontal position as shown in FIG. 7A, and when the sales frequency is high, as shown in FIG. 7B. The angle is set so that the movable shielding plate 81 faces upward. In addition, the dashed-dotted line in FIG.

  When the movable shielding plate 81 is in the horizontal position as shown in FIG. 7A, the inflow from the upper part is blocked as indicated by the arrow B in the figure, and as indicated by the arrow A in the figure. Since it flows mainly in the vicinity of the duct inlet 71, the cooling / heating area in the warehouse is narrowed. As a result, heat entering from the outside can be reduced and power consumption can be reduced. When the sales frequency is high, as shown in FIG. 7 (b), the flow of air from the upper part of the warehouse (arrow B in the figure) and the flow from the vicinity of the duct inlet 71 (arrow A in the figure) Since it can be generated, the cooling / heating area can be widened. As a result, products with insufficient cooling or heating are reduced, and sales opportunities are not missed.

This operation can also be performed manually by turning off the drive motor 86 and moving the knob 88 up and down.
When the movable shielding plate mode SW91 is set to the manual command mode in step S2 (step S2 branch 2), a desired target temperature is set by the temperature setting SW93 (step S21). Next, the temperature inside the cabinet is detected by the temperature sensor T at regular time intervals, and the movable shield plate 81 is adjusted for opening and closing (step S22). Specifically, when the internal temperature detected in the cooling operation is lower than the target temperature (high temperature in the heating operation), the cooling / heating area is too narrow, The operating rod 81 is raised to widen the opening / closing angle of the movable shielding plate 81. Further, when the internal temperature detected in the cooling operation is higher than the target temperature (a low temperature in the heating operation), the operation is performed with an excessively wide cooling / heating region. Is lowered so that the opening / closing angle of the movable shielding plate 81 is narrowed.

  Further, when the movable shielding plate mode SW91 is set to the automatic control mode in step S2 (step S2 branch 3), the control device 90 refers to the memory storing the sales frequency obtained from the sales counter 94 with the sales frequency information ( Step S31), the target temperature in each store is set according to the sales frequency (Step S32). Specifically, if the sales frequency is high, set the target temperature lower (in the case of heating operation, set it higher), and if the sales frequency is low, set the target temperature higher (heating) Set it lower when driving.) Then, similarly to S21, the temperature sensor T is detected at regular time intervals to perform opening / closing adjustment of the movable shielding plate 81 (step S33).

In the inventors' tests, it was confirmed that the average value of the fifth commodity temperature from the bottom of the commodity mounted on the commodity rack increases by increasing the opening / closing angle of the movable shielding plate 81.
As described above, when the sales frequency is low, the cooling / heating area in the warehouse is narrowed by positioning the shielding member 81 in a mode that blocks the flow of air from the upper part in the warehouse. This can reduce power consumption. In addition, when the sales frequency is high, the cooling / heating area can be widened by positioning the shielding member 81 in such a manner that the air flow from the upper part of the warehouse flows into the duct side, thereby preventing the sales opportunity from being missed. can do.

  By changing the opening / closing angle of the shielding member 81 stepwise or continuously, the cooling / heating region in the cabinet can be changed stepwise or continuously, so that the above effect can be performed more finely.

(Example 2)
A vending machine according to the second embodiment of the present invention will be described. The difference from the first embodiment is that the support plate 282 and the guide hole 282g are provided so that the shielding plate 81 is moved in the vertical direction while maintaining the horizontal state. The description will be made in detail with reference to the perspective view of FIG.

  The shielding plate 81 is fixed to the operation rod 84 at the center rear portion, and pins 82p and 82p are inserted at both ends of the side surface. The support plates 282 and 282 are extended from the side surface of the duct main body 71, and guide grooves 282g and 282g are formed in the rear portion thereof so as to engage with the pins 82p and 82p. The guide grooves 282g and 282g are for moving the shielding plate 81 in the horizontal state in the vertical direction as a guide for the pins 82p and 82p by driving the operation rod 84 in the vertical direction.

  With such a configuration, when the sales frequency is low, the flow of air from the upper part of the interior can be blocked by operating the operating rod 84 downward and moving the shielding plate 81 to a lower position. As a result of the narrowing of the cooling / heating region, the heat entering from the outside can be reduced and the power consumption can be reduced. In addition, when the sales frequency is high, the shielding member can be positioned in such a manner that the air flow from the upper part of the interior flows into the duct side, so that the cooling / heating area is widened and sales opportunities are not missed.

(Example 3)
A vending machine according to Embodiment 3 of the present invention will be described. The difference from the first embodiment is that a second shielding plate 381 is pivotally supported by the support plate 382 in the middle between the shielding plate 81 and the rear duct 70, and a second operating rod 384 for operating the second shielding plate 381. Is a point extended on the side surface side of the operating rod 84. The description will be made in detail with reference to the perspective view of FIG. 9 and the operation diagram of FIG. 10, and the other parts are substantially the same as those of the first embodiment, and the description of the same parts is omitted.

  As shown in FIG. 9, the second shielding plate 381 is a plate-like member similar to the shielding plate 81, and the back sides of both side ends thereof are pivotally supported by pins 82p and 82p, from the front (left side in the figure). The springs 82s and 82s that are biased in such a manner as to rotate the front end downward as seen are wound around the pins 82p and 82p. In addition, unlike the shielding plate 81 located at the upper portion, the second shielding plate 381 has no locking means by the stoppers 83 and 83 that are locked in the horizontal position. It is located with the front end facing downward. Further, the second shielding plate 381 is formed with a hole 381c to be penetrated to prevent interference with the operation rod 84.

The second operation rod 384 is a member for rotating the second shielding plate 381 and is a member that extends horizontally from the side surface of the operation rod 84 and then extends vertically upward. The second operation rod 384, the lower side of the distal end of the second shield plate 381 by contact with the second shielding plate 381 can be rotated horizontally, and upwardly.

  With such a configuration, when the operating rod 84 is set to the low position, as shown in FIG. 10A, the operating rod 84 and the second operating rod 384 come into contact with the shielding plate 81 and the second shielding plate 381, respectively. Therefore, the shielding plate 81 is in a horizontal state, and the second shielding plate 381 is downward. As a result, the flow from above in the cabinet is blocked by the shielding plate 81 as shown by the arrow B in the figure, and the back duct 70 as shown by the arrow A in the figure shows the flow from the middle and bottom in the cabinet. Since it flows into the inside, the cooling / heating area can be set to the middle area.

  When the operation bar 84 is set to the middle position, as shown in FIG. 10B, the operation bar 84 and the second operation bar 384 come into contact with the shielding plate 81 and the second shielding plate 381, respectively, so that the shielding plate Since 81 is in an upward state and the second shielding plate 381 is in a horizontal state, the flow from above in the chamber is blocked by the second shielding plate 381 as shown by an arrow B in the figure, and only from the lower part. Since the flow flows into the rear duct 70 as indicated by an arrow A in the figure, the cooling / heating area can be set to a small area.

  When the operating rod 84 is set to the high position, as shown in FIG. 10C, the operating rod 84 and the second operating rod 384 come into contact with the shielding plate 81 and the second shielding plate 381, respectively, so that the shielding plate 81, since the second shielding plate 381 is in an upward state, the flow from above in the cabinet is not blocked as indicated by the arrow B in the figure, and the flow from above, middle, and below is indicated by the arrow A in the figure. As shown in FIG. 6, since the air flows into the back duct 70, the cooling / heating area can be set to a large area.

(Example 4)
A vending machine according to a fourth embodiment of the present invention will be described. The difference from the first embodiment is that the depth dimension of the rear duct 70 is half, and the shielding plate 81 is provided on the front side of the rear duct 70 and the top plate side provided on the top plate side. This is a point that is divided into the shielding plate 581 and pivotally supported by the support plate 482. Further, the top plate side shielding plate 581 is to open and close the top plate side opening of the rear duct 70. The description will be made in detail with reference to the perspective view of FIG. 11 and the operation diagram of FIG. 12, and the other parts are substantially the same as those of the first embodiment, and the description of the same parts is omitted.

  The column plate 482 is provided so as to extend from the side plate of the duct body 71, and a flange 482f extending to the near side from the middle stage and a flange 482u extending upward from the upper end are formed. Further, a front plate 483 is provided between both the column plates 482 so as to extend in front of the duct main body 70, and the duct space is formed in such a manner that the passage of the rear duct 70 is extended by the both column plates 482 and the front plate 483. Is formed.

  The front-side shielding plate 481 is a plate-like member, and the back sides of both side ends thereof are pivotally supported by pins 82p and 82p in the same manner as the shielding plate 381 shown in FIG. 9, and viewed from the front (left side in the figure). The springs 82s and 82s for energizing the pin 82 downward are wound around the pins 82p and 82p. Further, when the front-side shielding plate 481 does not contact the second operation rod 484, the front-side shielding plate 481 is positioned with its front end facing downward.

  The top-plate-side shielding plate 581 is a plate-like member and is urged by springs 82s and 82s in a manner that closes the duct space. Further, stoppers 83 and 83 are fixed inside the support plates 482 and 482, and the top plate side shielding plate 581 is locked in a horizontal position. The top-plate-side shielding plate 581 is brought into contact with the operation rod 84 so that the tip thereof is rotated upward, so that the upper space in the cabinet communicates with the upper end opening of the duct 70.

The second operating rod 484 is for rotating the second shielding plate 481 and is a member that extends horizontally from the side surface of the operating rod 84 and then extends vertically upward.
With this configuration, when the operating rod 84 is set to the low position, as shown in FIG. 12A, the operating rod 84 and the second operating rod 484 are placed on the front side shielding plate 481 and the top side shielding plate 581, respectively. Since it does not contact, the top plate side shielding plate 581 is in a horizontal state, and the front side shielding plate 481 is downward. As a result, as indicated by an arrow B in the figure, the flow from above along the back surface is blocked by the top plate side shielding plate 581 and flows between the end surface of the rack and the top plate side shielding plate 581 in the drawing. Since it flows into the opening 71a as indicated by the arrow A, the cooling / heating region can be set to the middle region.

  When the operation bar 84 is set to the middle position, as shown in FIG. 12B, the operation bar 84 does not contact the top plate side shielding plate 581 and the top plate side shielding plate 581 is in a horizontal state. 2 The operation rod 484 comes into contact with the front side shielding plate 481 to bring the front side shielding plate 481 into a horizontal state. As a result, as indicated by an arrow B in the figure, the flow from the upper side in the cabinet is blocked by the top-plate-side shielding plate 581 and the front-side shielding plate 481, so that the flow from only the lower part is the arrow A in the drawing. Since it flows in into the back surface duct 70, it can set a cooling and heating area | region to a small area | region.

  When the operation bar 84 is set at the high position, as shown in FIG. 12C, the operation bar 84 and the second operation bar 484 are in contact with the top-side shielding plate 581 and the front-side shielding plate 481, respectively. The top side shielding plate 581 and the front side shielding plate 481 are in an upward state. As a result, as indicated by an arrow B in the figure, the flow along the rear surface flows into the duct from the upper opening of the rear duct 70, and the flow on the near side also flows into the rear duct 70. Since the flow from the air flows into the rear duct 71a as indicated by an arrow A in the figure, the cooling / heating region can be set to a large region.

In other words, the cooling / heating region can be controlled by operating the operating rod 84 to open and close the front side shielding plate 481 and the top side shielding plate 581.
As described above, the shielding member for preventing the flow of the circulating flow of the cooled or heated air is provided at the upper part of the duct, and the shielding member is movably provided. Since the shielding member can be positioned in a manner that blocks the flow of air, the cooling / heating area in the warehouse becomes narrow, resulting in reduced heat intrusion from outside and reduced power consumption. Since the shielding member can be positioned in a mode in which the air flow from the inner upper part flows into the duct side, the cooling / heating area is widened and sales opportunities are not missed.

  By changing the shielding member stepwise or continuously, the cooling / heating region in the warehouse can be changed stepwise or continuously, so that the above effect can be performed more finely.

  As described above, the present invention is useful as, for example, a vending machine for cooling / heating the internal atmosphere of a heat insulating housing.

DESCRIPTION OF SYMBOLS 10 Main body cabinet 20 Outer door 30 Inner door 40a, 40b, 40c Product storage 60 Cooling / heating unit 61 Compressor 62 Condenser 63 Expansion valve (expansion means)
65a, 65b, 65c Internal heat exchanger 66h Heater heater 70a70b, 70c Rear duct 80 Shield plate movable device 81, 81a, 81b, 81c Shield member 84 Operation rod 86 Drive motor 381 Second shield plate 481 Front shield plate 581 Top plate side shielding plate

Claims (3)

A product storage rack that transports products stored side-by-side in the cabinet's cabinet up and down in order from the lowest order based on sales instructions, and cools or cools the product by circulating or blowing air that is cooled or heated in the cabinet according to the operation mode Or a cooling / heating unit with a fan to be heated, a duct that is connected to the wind tunnel of the cooling / heating unit and is located on the back of the cabinet, and has a suction port on the front wall, and is cooled or heated above the duct A shielding member for preventing the flow of the circulating air flow; and extending from the lower part to the upper part of the duct, contacting the shielding member to open the shielding member upward and separating the shielding member from the upper part. in an automatic vending machine comprising an operating rod for closing the shielding member in the horizontal direction, by vertically moving the operating rod, wherein the shield member is freely movable der Vending machine, characterized in that. The vending machine according to claim 1, wherein the shielding member opens and closes in multiple stages. 2. The vending machine according to claim 1, wherein the shielding member is continuously opened and closed.