KR0184660B1 - Duct device of a vending machine - Google Patents

Abstract

It is an object of the present invention to provide a duct apparatus of a vending machine that can efficiently cool or warm a product without increasing the load on the heat exchanger or the fan. To this end, the in-vehicle duct 11 which extends up and down along the rear wall 5a in the goods storage 5 is provided, and the circulating air which passed through the goods column 6 by the in-vehicle duct 11 is a heat exchange part. In the duct apparatus of the vending machine which is guided to (9, 10), the in-vehicle duct (11) has a first intake opening (23) opened in the upper end and the second intake opening (24) opened in the substantially middle portion in the vertical direction And an exhaust port 25 which is opened at the lower end portion and directly connected to the heat exchange parts 9 and 10.

Description

Ducting Equipment of Vending Machine

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a duct apparatus of a vending machine in which a duct in a vault is disposed in a part of a path of circulating air circulating in a product storage compartment for cooling or warming goods.

6 shows the flow of circulating air in a conventional vending machine. The evaporator 62 which is a heat exchange part, and the heater 63 are installed in the lower part of the goods storage 61, and it can cool or heat. The fan 64 is arrange | positioned at the front side of the evaporator 62 and the heater 63, and the air circulates in the goods storage 61 by the blowing of this fan 64. As shown in FIG. In addition, the in-vehicle duct 65 is connected to the rear side of the evaporator 62 and the heater 63. In-vehicle duct 65 extends in the vertical direction along the rear wall in the product storage 61, an inlet 65a at the upper end, and an exhaust port 65b directly connected to the evaporator 62 and the heater 63 at the lower end. It is installed.

The circulating air taken out from the fan 64 through the heat exchange part is guided forward and then directed upward to cool or warm the goods in the goods column 57. In addition, the circulating air is guided to the rear and is sucked into the in-vehicle duct 65 to return to the heat exchange unit. Thus, the circuit duct of circulation air is prevented by providing the duct 65 in the inside of a circulation path of circulation air.

As described above, the conventional vending machine can prevent the circuit break of the circulating air circulating in the goods storage 61 by the in-vehicle duct 65. However, since there is only one inlet 65a of the in-vehicle duct 65, Even if the inlet port 65a is disposed at any position of the upper, middle, or lower portions of the product storage 61, the circulation path of the circulating air is biased, making it difficult to efficiently cool or warm the product. In addition, fine adjustment such as cooling or warming the goods accommodated in the lower part of the product column 67 having a rapid sales order by weighting other items of goods was also difficult.

It is an object of the present invention to provide a duct apparatus of a vending machine that can efficiently cool or warm a product without increasing the load on the heat exchanger or the fan.

1 is a longitudinal sectional view of a vending machine having a duct device according to a first embodiment of the present invention.

2 is a front elevational view of a vending machine having a duct device according to the first embodiment.

3 is a longitudinal sectional view of a vending machine having a duct device according to a second embodiment of the present invention.

4 is a front elevational view of a vending machine having a duct device according to a second embodiment.

5 is a longitudinal sectional view of a vending machine having a duct device according to a third embodiment of the present invention.

6 is a longitudinal sectional view of a vending machine having a conventional ducting device.

* Explanation of symbols for main parts of the drawings

1: vending machine 5: goods storage

5a: rear wall 6: commodity column

8: fan 9: electric heater

10: evaporator 11: duct in the altitude

23: first intake port 24: second intake port

25: exhaust port 31: first duct

32: second duct 33: first intake

34: second intake port 36: exhaust port

41: intake port 42: exhaust port

44: chamber portion

The duct apparatus of the vending machine of claim 1 has an in-vehicle duct extending along the rear wall in the goods storage in the up and down direction, and is configured to guide the circulating air to the heat exchange part after passing the goods column by the in-vehicle duct. In the duct apparatus of the vending machine, the inside duct of the vending machine has a first intake opening opened at the upper end portion, a second intake opening opened at an almost middle portion in the vertical direction, and an exhaust port opened at the lower end portion and directly connected to the heat exchanger.

According to this structure, since the circulation air which passed the goods column in the goods storage room is aspirated from two places, such as the 1st intake port of the upper end part of the inside of a duct, and the 2nd intake part of an intermediate part, the flow of circulating air becomes comparatively uniform in the up-down direction. . In addition to the consideration of the frictional loss of the internal duct, by designing the opening area of the first intake port and / or the opening area of the second intake port, it is possible to adjust the ratio of the intake amount from the first intake port and the intake amount from the second intake port.

The duct apparatus of the vending machine of claim 2 has an in-vehicle duct extending upward and downward along a rear wall in the goods storage, and the duct of the vending machine which guides the circulating air passing through the goods column by the in-vehicle duct to the heat exchange part. In the apparatus, the duct in the refrigerator is provided with a first duct having a first intake opening opened at the upper end and a first exhaust opening opened at the lower end and directly connected to the heat exchange unit, and a second intake opening opened at the upper end and the lower opening opened directly at the heat exchange unit. And a second duct having a second exhaust port, wherein the first intake port is disposed at a position higher than that of the second intake port.

According to this structure, the circulation air which passed the goods column is attracted from two places, such as the 1st intake port of a 1st duct upper end part, and the 2nd intake port of a 2nd duct upper end part. In this case, since the first intake port and the second intake port are arranged at different heights, the flow of circulating air is relatively uniform in the vertical direction. In addition, as in claim 1, the ratio between the intake air amount from the first intake port and the intake air amount from the second intake port can be easily adjusted. In addition, since the first and second ducts are independent, their total frictional losses are smaller than the frictional losses of the conduit type ducts as in claim 1, so that the load on the fan can be reduced accordingly.

In the duct apparatus of the vending machine of claim 3, the second duct is preferably composed of a pair of air passages arranged on the left and right by sandwiching the first duct.

According to this structure, the mutually independent 1st duct and 2nd duct can be arrange | positioned, without increasing the internal dimension of an internal duct, and the circulation path of circulation air can be equalized also in the left-right direction.

The duct device of the vending machine of claim 4 has an in-vehicle duct extending along the rear wall in the goods storage in the vertical direction, and the duct of the vending machine which guides the circulating air which has passed through the goods column by the in-vehicle duct to the heat exchange part. In the apparatus, the in-vessel duct has an inlet opening opened at the upper end and an exhaust port opened at the lower end and directly connected to the heat exchange unit, and the lower end of the in-vehicle duct is formed in an expanded shape toward the exhaust port.

According to this configuration, the circulating air flowing from the in-vehicle duct to the heat exchange part tends to become laminar flow, that is, the cross-sectional area of the in-vehicle duct gradually increases, so that the frictional loss of the in-vehicle duct can be reduced. As a result, the load on the fan can be reduced.

Hereinafter, with reference to the accompanying drawings will be described a vending machine to which the duct apparatus according to the first embodiment of the present invention is applied. As shown in Figs. 1 and 2, the vending machine 1 is composed of a vending machine body 2 and a main door 3 attached to the front face of the vending machine body 2 so as to be openable and openable. The inside of the vending machine main body 2 is provided with a product storage 5 which has a heat insulation door 4 in the front surface widely, and the product column 6 which filled the goods in the product storage 5 is accommodated. .

In the goods storage 5, the chute 7 is provided below the goods column 6, and the fan 8 which circulates air and the electric heater 9 which comprises a heat exchange part below the chute 7 are provided. ) And the evaporator 10 are arranged side by side in the lateral direction. Moreover, the in-vehicle duct 11 is arrange | positioned at the back side of the evaporator 10, This in-vehicle duct 11 extends along the rear wall 5a in the goods storage 5 in the up-down direction. In this case, the product is heated by driving the electric heater 9, and the product is cooled by driving the evaporator 10. Although not shown, a cooling unit (outer unit) is disposed in the space below the product storage 5, and the evaporator 10 is connected to this cooling unit.

In-vehicle duct 11 is composed of a duct body 21 and a chamber portion 22 connected to the lower side of the duct body 21, the upper end of the duct body 21, the first intake port 23, the middle portion The second intake port 24 and the exhaust port 25 is formed at the front end of the chamber portion 22. The first intake port 23 opens the end of the duct main body 21 and is disposed at almost the height of the product storage 5. The second intake port 24 is an annular hole 24a formed at an intermediate position of the duct main body 21, and the second intake port 24 in this embodiment is composed of four annular holes 24a (Fig. 2). Reference). The exhaust port 25 is directly connected to the evaporator 10 and cooperates with the chamber 22 to stably guide air to the evaporator 10 and the electric heater 9. Moreover, you may comprise the 2nd intake port 24 by several square holes and slits.

Here, the flow of air will be described. Air taken out from the fan 8 through the evaporator 10 and the portion of the electric heater 9 is guided forward through the slits formed in the chute 7, and is directed upwards to the commodity column 6. To this. The air that has risen while passing through the inside of the goods column 6 is taken in by the second intake port 24, a part of which is directed rearward of the inside of the goods column 6. In addition, the remaining air is taken in by the first intake port 23 facing the inside of the product column 6 rearward after further rising. The air sucked into the first intake port 23 and the air taken into the second intake port 24 are joined inside the duct body 21 to pass through the exhaust port 25 from the chamber 22 to the evaporator 10 and the electric heater. Return to the part of (9).

As described above, according to the first embodiment, since air is taken in from two upper and lower positions, such as the first intake port 23 located in the middle of the goods storage 5 and the second intake port 24 located below, This results in two flows, air traversing the middle of the merchandise column 6 and air traversing the bottom, allowing the merchandise to be heated or cooled relatively uniformly. In addition, by actively guiding air to the lower portion of the product column 6 through the second intake port 24, it is possible to actively warm up or cool down the merchandise with a rapid sales order, thereby efficiently heating or cooling the merchandise. In addition, by appropriately adjusting the number and diameter of the annular holes 24a constituting the second intake port 24, the ratio of the air amount from the first intake port 23 and the intake amount from the second intake port 24 can be adjusted. In other words, it is possible to adjust the ratio of the amount of air traversing the middle of the commodity column 6 and the amount of air traversing the lower portion.

Next, a second embodiment of the present invention will be described with reference to FIGS. 3 and 4. FIG. In this embodiment, the in-vehicle duct 11 is composed of a first duct 31 having a high height and a second duct 32 having a low height. The first duct 31 and the second duct 32 are formed independently of each other by sharing a part of the wall surface, that is, the second duct 32 is a pair of left and right air passages to fit the first duct 31 It consists of 32a, 32b. The first intake port 33 is opened at the upper end of the first duct 31, and the pair of second intake holes 34 and 34 are opened at the upper end of the second duct 32, respectively. The lower side of the 1st duct 31 and the 2nd duct 32 has the chamber part 35 which both ducts 31 and 32 share, and the front end of this chamber part 35 has both ducts 31, An exhaust port 36 shared by 32 is formed.

In such a configuration, the air that has risen while passing through the inside of the goods column 6 is sucked into the second intake port 34 of the second duct 32 whose part is directed backward to the inside of the goods column 6, and After the remaining air is further raised, the air is sucked into the first intake port 33 of the first duct 31 facing the inside of the product column 6 to the rear. The air intaken in the first intake port 33 and the air intaken in the second intake port 34 reach and join the chamber portion 35 where they are part of the evaporator 10 and the electric heater 9 from the exhaust port 36. Return to

As described above, according to the second embodiment, since the air is sucked from the upper and lower portions of the upper and middle portions of the goods storage chamber 5 by the first duct 31 and the second duct 32, accordingly, the product column Two flows, air crossing the upper part of (6) and air crossing the middle part, are generated, so that the product can be heated or cooled relatively uniformly. In addition, by appropriately adjusting the cross-sectional area of both ducts 31 and 32, it is possible to adjust the ratio of the amount of air traversing the upper part of the product column 6 and the amount of air traversing the middle. On the other hand, since the 1st duct 31 and the 2nd duct 32 are comprised independently, friction loss becomes small and the load of the fan 8 can be reduced.

Next, a third embodiment of the present invention will be described with reference to FIG. In this embodiment, the in-vehicle duct 11 has an inlet port 41 at the upper end and an exhaust port 42 at the lower front end, and has a structure in which the duct body 43 and the chamber part 44 are integrated. . The front plate 44a of the chamber portion 44 extends to the exhaust port 42 while being curved, and the chamber portion 44 is formed in an expanded shape toward the exhaust port 42.

In such a configuration, since the cross-sectional area of the chamber portion 44 gradually increases toward the exhaust port 42, the flow of air reaching the exhaust port 42 from the duct body 43 via the chamber portion 44 tends to become laminar flow. The flow of air curved at right angles can be smoothly performed. Therefore, the friction loss of the internal duct 11 can be made small, and also the load of the fan 8 can be reduced. The front plate 44a may be formed in an inclined straight line shape.

As described above, according to the duct apparatus of the vending machine according to claim 1, the circulating air flow can be made uniform by inhaling the circulating air passing through the product column at two places up and down, without increasing the load on the heat exchanger or the fan. In addition, the product can be efficiently cooled or warmed with a simple configuration.

In addition, according to the duct apparatus of the vending machine of claim 1, the circulating air is taken in at two places in the upper and lower parts as described above, so that the flow of the circulating air can be uniform, and the product can be efficiently cooled or warmed with a simple configuration. In addition, the load on the fan can be reduced.

Moreover, according to the duct apparatus of the vending machine of claim 1, the load of the fan can be reduced and the circulation air can be smoothly flown.

Claims (4)

In the duct apparatus of the vending machine which has the in-vehicle duct extended along the rear wall in the goods storage room, and guides the circulating air which passed the goods column to the heat exchange part by this in-house duct, The in-vehicle duct includes a first intake opening opened in the upper end portion, a second intake opening opened in the substantially middle portion in the vertical direction, and an exhaust port opened in the lower end portion and directly connected to the heat exchanger. In the duct apparatus of the vending machine which has the in-vehicle duct extended along the rear wall in the goods storage room, and guides the circulating air which passed the goods column to the heat exchange part by this in-house duct, The inner duct includes a first duct having a first intake opening opened at an upper end and a first exhaust opening opened at a lower end and directly connected to the heat exchanger, and a second intake opening opened at the upper end and a second opening opened at the lower end and directly connected to the heat exchanger. Consisting of a second duct having an exhaust port, The first air inlet is disposed in a position higher than the second air inlet. The duct apparatus according to claim 2, wherein the second duct is composed of a pair of air passages arranged on the left and right by sandwiching the first duct. In the duct apparatus of the vending machine which has the in-vehicle duct extended along the rear wall in the goods storage room, and guides the circulating air which passed the goods column to the heat exchange part by this in-house duct, The in-vehicle duct has an inlet opening opened at the upper end, and an exhaust port opening at the lower end and directly connected to the heat exchange unit, The lower end of the duct inside the duct is characterized in that it is formed in an expanded shape toward the exhaust port.