KR19990054820A - Temperature control device of vending machine - Google Patents

Abstract

The present invention relates to a temperature control device for a vending machine, and a plurality of temperature sensors are installed by respectively installing temperature sensors on a lower eject plate of a plurality of eject mechanisms for ejecting a plurality of products stored in a plurality of racks in the left and right stores. By controlling the compressor and the left and right in-vehicle valves so that the average temperature of a plurality of goods in the left-height or right-height is detected as the set temperature, it is possible to actually control the temperature of the goods sold in the left and right-height. .

Description

Temperature control device of vending machine

The present invention relates to a vending machine, and in particular, the temperature of a plurality of goods stored at the bottom of the plurality of racks in the left and right heights, and detects the compressor and the left and right height valves to control accordingly sales in the left and right heights It relates to a temperature control device of a vending machine that allows the temperature of a plurality of products to be controlled in practice.

In general, a vending machine is an unmanned vending machine, which includes products such as coffee, tobacco, sweets, books, cans, etc., inputs an amount corresponding to a product that a user wants to purchase, and then supplies a desired product. When selected, it refers to a vending machine through which the selected product is discharged to the product outlet.

Here, the vending machine for automatically selling cans (for example, canned beverages), as shown in Figure 1, the main body 1 to form an appearance, and the main body 1 is hinged to the main body 1 The door 2 is made to open and close.

In addition, left and right heights are formed in the main body 1, and racks 4 are provided to store goods (can drink) in the left and right heights, and at the lower end of the racks 4, An eject machine 6 for discharging the canned beverage stacked on the rack 4 is provided.

2 and 3, the eject machine 6 is fixed to the lower end of the rack 4 and the upper surface of the base 7 is fixed to a predetermined position up and down. It consists of a solenoid operated (not shown), an upper ejection plate 8 rotatably installed by the solenoid, and a lower ejection plate 9.

In addition, the lower left and right intraepital evaporator 10 shown in FIG. 4 absorbs heat from the surroundings so as to cool the canned beverage stored in the rack 4 in the left and right altitudes in the lower part of the main body 1. 12), the condenser 13 for condensing the refrigerant evaporated in the left and right intra-evaporator 10, 12, and the refrigerant condensed in the condenser 13 is supplied to the left and right intra-evaporator 10, 12 A compressor 14 is provided for compressing the refrigerant so as to evaporate.

The cold air generated by the left and right intra-epitaxial evaporators 10 and 12 is supplied to the main body 1 at a position opposite to the left and right intra-high-side evaporators 10 and 12, and the rack 4 in the main body 1 is supplied. A circulation fan 15 for circulating cold air is installed so as to cool the canned beverage stored therein, and a cooling fan 16 is installed to cool the condenser 13 at a position opposite to the condenser 13. have.

Meanwhile, in FIG. 4, the left and right in-vehicle valves 17 and 18 are turned on or off according to the temperatures of the left and right in-vehicle evaporators 10 and 12 to supply power (eg, AC220V) supplied from the outside. Opened by receiving power through the left and right internal high temperature thermostat (not shown) to cut off, and supply the refrigerant to the left and right internal high temperature evaporators 10 and 12, respectively, and the compressor 14 is the left and right internal high temperature. Powered by a thermostat is driven to compress the refrigerant, the expansion valve 19 to reduce the refrigerant condensed in the condenser (13).

When the vending machine according to the related art configured as described above is operated by a manager by connecting a power source to the vending machine, the left and right thermostats are turned on when the temperature of the left and right in-air evaporators 10 and 12 of the vending machine is higher than the set temperature. Then, the power supplied from the outside is supplied to the compressor 14 through the left and right in-vehicle thermostats so that the compressor 14 is driven and the left and right in-vehicle valves 17 and 18 are opened.

Next, as the compressor 14 is driven, the refrigerant is compressed to a gaseous state of high temperature and high pressure, and the refrigerant introduced into the condenser 13 is condensed by heat exchange with air blown by the cooling fan 16, and then the expansion valve 19 Is reduced.

Then, the refrigerant depressurized by the expansion valve 19 flows into the left and right inward evaporators 10 and 12 through the left and right intrachamber valves 17 and 18 and is blown by the circulation fan 15. The cold air is generated by heat exchange with the cold air, and the generated cold air is blown by the circulation fan 15 to the racks 4 in the left and right stores, and the canned beverage is cooled.

Afterwards, when the temperature of the left and right intra-evaporation evaporators 10 and 12 of the vending machine is not higher than the set temperature, the left and right thermostats are turned off so that the power supplied from the outside is not supplied to the compressor 14. As 14) is stopped and the left and right intrachamber valves 17 and 18 are closed, the canned beverage stored in the rack 4 in the left and right vault is not cooled.

That is, the compressor 14 is driven or stopped by a thermostat that is turned on or off depending on the temperatures of the left and right intra-high evaporators 10 and 12, while the left and right intra-high altitude valves 17 and 18 are opened or closed. The canned beverage in the left and right high is kept at the set temperature.

On the other hand, when the user inputs the amount corresponding to the desired canned beverage and selects the desired canned beverage, the solenoid of the eject machine 6 is operated so that the upper and lower ejection plates 8 and 9 are shown in FIG. In the standby state as shown in FIG. 4, the upper ejection plate 8 is supported so as not to drop the product directly above the canned beverage to be sold, and the canned beverage in the lower ejection plate 9 falls. By being dispensed, the user can purchase a desired canned drink.

However, the vending machine according to the related art is a product stored in the left and right heights by operating the compressor and the left and right height valves by the left and right thermostats which are turned on or off depending on the temperature of the left and right height evaporators. By maintaining the temperature at the set temperature, there was a problem that the temperature of a plurality of products immediately before the sale stacked on the bottom of the plurality of racks in the left and right stores is not actually controlled.

Accordingly, the present invention has been made in order to solve the above problems, the compressor and so that the average temperature of the plurality of goods accumulated at the bottom of the plurality of racks in the left and right heights detected by the temperature sensing unit becomes a set temperature. It is an object of the present invention to provide a temperature control device for a vending machine that can control the temperature of the goods sold in the left and right heights by controlling the left and right height valves.

Temperature control device of the vending machine according to the present invention for achieving the above object is the refrigerant inside the left and right high-pressure by the cold air generated by the refrigerant is circulated through the left and right high-pressure evaporator through the left and right intra-chamber valve. A vending machine in which a plurality of products stored in a plurality of racks are cooled and sold, a temperature sensing unit for sensing a temperature of a plurality of products stacked at the bottom of the plurality of racks in the left and right heights, and the temperature sensing unit The compressor is operated so that the average temperature of the plurality of products in the left or right height detected through the compressor is at the set temperature, and the valve is controlled so that the average temperature of the plurality of products in the left height is the set temperature. On the other hand, characterized in that consisting of a control unit for controlling the valve in the right height so that the average temperature of the plurality of products in the right height. The.

1 is a schematic side view of a general vending machine,

2 is a front view showing the standby state of the eject machine of FIG.

3 is a front view showing the sales state of the eject machine of FIG.

4 is a view for explaining a general cooling cycle,

5 is a schematic block diagram of a temperature control device of a vending machine according to the present invention;

6 is a front view showing the standby state of the first eject machine of FIG.

FIG. 7 is a schematic side cross-sectional view showing the standby state of the first eject machine of FIG.

* Explanation of symbols for main parts of the drawings

4: rack 10: left high-evaporator

12: right airtight evaporator 17: left airtight valve

18: valve in the right height 20: temperature sensor

22: first temperature sensor 24: eighth temperature sensor

26: 9th temperature sensor 28: 16th temperature sensor

30: control part 40: left internal valve driving unit

41: right inner valve driving unit 42: compressor driving unit

43: product outlet 44: the first eject machine

45: eighth eject machine 46: ninth eject machine

47: 16th eject machine 48: lower eject plate

Hereinafter, with reference to the accompanying drawings will be described in detail with respect to the temperature control device of the vending machine according to the present invention.

In FIG. 5 to FIG. 7, the same components as those in the related art are denoted by the same names, and detailed description thereof will be omitted.

5 is a schematic block diagram of a temperature control device of a vending machine according to the present invention. As can be seen from the drawings, the temperature control device of the vending machine according to the present invention includes a temperature sensing unit 20 and a controller ( 30), the left in-vehicle valve driving part 40, the right-in-vehicle valve driving part 41, the compressor driving part 42, and the goods discharge part 43 are comprised.

In FIG. 5, the temperature detecting unit 20 detects the temperature of the product immediately before the sale in the left and right heights and outputs a detection signal corresponding to the temperature. The first temperature sensor 22 detects the temperature of the product in the left height. ), The eighth temperature sensor 24 and the ninth temperature sensor 26 to the sixteenth temperature sensor 28 for detecting the temperature of the goods in the right.

Here, the first temperature sensor 22 of the first ejection mechanism 44 to detect the temperature of the product immediately before the sale located at the bottom of the rack 4, as shown in Figure 6 and 7 It is provided in the predetermined part of the lower ejection board 48, and the 2nd temperature sensor-the 16th temperature sensor are respectively provided in the lower ejection plate of the 2nd ejection mechanism-the 16th ejection mechanism.

Then, the control unit 30 receives the detection signal from the temperature sensing unit 20 and calculates the average temperature in the left and right heights, respectively, and the compressor so that the calculated average temperature in the left and right heights becomes the set temperature. And a control signal for opening or closing the left and right intraocular valves (see 17 and 18 in FIG. 4).

In addition, the left in-vehicle valve driving unit 40 opens or closes the left in-vehicle valve by the control signal of the control unit 30, and the right-in-vehicle valve driving unit 41 opens the right in-vehicle valve by the control signal of the control unit 30. Or close it.

In addition, the compressor driving unit 42 drives or stops the compressor by the control signal of the control unit 30, and the product discharge unit 43 discharges the product selected by the user by the control signal of the control unit 30, The first ejection mechanisms 44 to the eighth ejection mechanisms 45 respectively installed at the lower ends of the plurality of racks in the left height, and the ninth ejection mechanisms 46 to the 16th ejection mechanisms respectively installed at the lower ends of the plurality of racks in the right height. It consists of (47).

Hereinafter, the temperature control device of the vending machine according to the present invention configured as described above will be described in detail with reference to FIGS.

First, when the used AC power is supplied to the vending machine from the outside, the control unit 30 initializes the vending machine, and the first temperature sensor 22 to the eighth temperature sensor 24 of the temperature sensing unit 20 The 9th temperature sensor 26-16th temperature sensor 28 detects the temperature of the goods (can drink) in the left and right heights, and outputs the corresponding detection signal to the control part 30, respectively.

Next, the control unit 30 receives the detection signals and calculates the average temperature in the left and right heights, respectively, and when the calculated average temperature in the left and right heights is higher than or equal to the set temperature, the compressor driving unit generates a control signal for driving the compressor. At the same time, the control signal for opening the left and right intra-chamber valves is outputted to the left and right intra-chamber valve driving units 40 and 41.

Next, the compressor driving unit 42 drives the compressor according to the control signal, and the left and right intra-high intravalve valve driving units 40 and 41 open the left and right intra-high valves according to the control signal. The goods accumulated in the racks 4 in the left and right stores are cooled by the cold air generated in the left and right stores in the upper right evaporator (see 10 and 12 in FIG. 4).

Thereafter, the control unit 30 outputs a control signal for closing the left intra-high pressure valve to the left intra-high pressure valve driving part 40 when the average temperature in the left high pressure is not higher than the set temperature, and the left intra-high pressure valve driving part 40 receives the control signal. To close the left internal valve.

Next, as the left intraventricular valve is closed, no refrigerant flows into the left intraepithelial evaporator, whereby no cold air is generated in the left intraventricular evaporator, so that the goods accumulated in the rack 4 in the left internal compartment are not cooled.

In addition, the control unit 30 outputs a control signal for closing the right intra-high altitude valve driving unit 41 to the right intra-high altitude valve driving unit 41 when the average temperature in the right altitude is not higher than the set temperature, and the right intra-high altitude valve driving unit 41 controls the control signal. To close the right intraocular valve.

Next, as the right intraventricular valve is closed, no refrigerant flows into the right intraepittal evaporator, whereby no cold air is generated in the right intraepithelial evaporator, and the goods accumulated in the rack 4 in the right altitude are not cooled.

On the other hand, the controller 30 outputs a control signal for stopping the compressor to the compressor driver 42 when the average temperature in the left and right heights is not higher than the set temperature, and at the same time, closes the valves in the left and right heights. Is output to the left and right intra-high intravalve valve driving units (40, 41).

Next, the compressor driving unit 42 stops the compressor according to the control signal, and the left and right intra-high altitude valve driving units 40 and 41 stop the left and right intra-high altitude valves according to the control signal. Since no cold air is generated in the evaporator, the goods accumulated in the racks 4 in the left and right stores are not cooled.

That is, the compressor 54 is driven or stopped so that the average temperature in the left and right heights of the vending machine becomes the set temperature, and the valves in the left and right heights are opened or closed to open or close the left and right height valves. The temperature of several products immediately before the sale stored at the bottom is maintained at the set temperature.

As described above, the temperature control device of the automatic vending machine according to the present invention controls the compressor and the left and right in-vehicle valves according to the temperature of the plurality of goods stored at the bottom of the plurality of racks in the left and right-height, There is an effect that can actually control the temperature of a plurality of products immediately before the sale stacked in a plurality of racks in the store.

Claims (1)

Refrigerant circulated by the compressor is driven into the left and right inside the evaporator through the left and right inside the high-pressure valves, the vending machine is cooled and sold a number of goods stored in a plurality of racks in the left and right. In A temperature sensing unit configured to sense temperatures of a plurality of products stacked at the bottom of the plurality of racks in the left and right heights; The compressor is operated such that the average temperature of the plurality of products in the left or right storehouses sensed by the temperature sensing unit becomes a set temperature, and the average temperature of the plurality of products in the left storehouse is the set temperature. And a control unit for controlling the valve in the refrigerator and controlling the valve in the right refrigerator so that the average temperature of a plurality of products in the right refrigerator is a set temperature.