JPH0578079B2 - - Google Patents

Description

[Detailed Description of the Invention] [Object of the Invention] (Industrial Application Field) The present invention supplies coffee raw materials from a coffee raw material supply mechanism and hot water from a hot water supply mechanism to an extraction mechanism to obtain coffee. This invention relates to a vending machine that sells items in bulk.

(Prior art) As such a vending device, the Utility Model 125300
There is a technology described in the publication. In this vending machine, when the regular coffee button is pressed, a certain amount of hot water is supplied from the hot water tank to the extraction mechanism through the supply pipe, and at the same time, the raw material powder for regular coffee is supplied to the brewing mechanism at a constant rate. The quantity is supplied to the extraction mechanism. Hot water and powder are mixed in this extraction mechanism, compressed and extracted, and passed through a filter into a mixing chamber where cream and the like are added and supplied to a cup as coffee. Further, this vending machine is equipped with a mechanism for supplying instant coffee raw materials and the like to a mixing chamber and supplying hot water to the mixing chamber to sell instant coffee.

By the way, the extraction mechanism consists of a brewer, a cylinder, and a filter interposed between them, and supplies a predetermined amount of coffee raw materials and a predetermined amount of hot water to the brewer.
BACKGROUND ART A device is known in which coffee is sucked and extracted into a cylinder through a filter by moving a piston inside the cylinder up and down. However, this method had the problem that extraction took too long because the piston reciprocated. For this reason, recently, the extraction mechanism has been constructed with only a cylinder, and hot water is supplied into this cylinder using a hot water pump. A fixed amount of coffee raw material is supplied, and in this state, the piston is moved downward to compress the coffee raw material, and at the same time, a fixed amount of hot water from the metering tank is compressed and supplied into the cylinder by the operation of the hot water pump. Therefore, devices that can extract coffee in a relatively short time have been developed.

(Problems to be Solved by the Invention) However, even in the vending machine using the coffee extraction mechanism as described above, there are still problems to be improved as described below. That is, the concentration of coffee extracted from the coffee extraction port of the coffee extraction mechanism generally exhibits characteristics as shown in FIG.
In FIG. 7, the vertical axis represents the coffee concentration, and the horizontal axis represents the elapsed time t after the hot water pump is activated and coffee starts to be extracted from the coffee extraction port of the extraction mechanism. Note that the amount of coffee extracted per unit time is a constant value determined by the hot water supply capacity of the hot water pump. Therefore, by driving the hot water pump for a predetermined time T ₀ , one cup of coffee is extracted. In addition, as shown in the figure, the coffee concentration is measured at the point when a very short time has passed from the extraction start time (t = t ₁ ).
It reaches its highest value at , and then declines rapidly. Then, near the time point (t= _t2 ) at which the hot water supply period _T0 has elapsed during which one cup of coffee is extracted, the coffee concentration has a very small value.

Therefore, during the last period of the hot water supply period _T0 during which coffee is being extracted into the cup set in the vending spout, the cup is supplied with very low concentration coffee that is similar to hot water.

On the other hand, as for a vending machine, the shorter the sales time for one customer, the less the customer's waiting time is, the better the service to the customer, and the more coffee the vending machine can sell per unit time. Therefore, it is desired that the coffee extraction time per cup (hot water supply period T ₀ ) be further shortened.

The present invention was devised to solve these problems, and its purpose is to provide an additional hot water supply device that directly supplies hot water to the cup without passing it through the coffee brewing mechanism. To provide a vending machine capable of shortening coffee extraction time without substantially lowering coffee concentration, shortening sales time per cup of coffee, improving service to customers, and improving sales efficiency.

[Structure of the Invention] (Means for Solving the Problems) The present invention operates a regular coffee raw material supply mechanism for a predetermined period of time based on preset data by inserting a predetermined amount of money into a coin mechanism and operating a switch. The main hot water supply mechanism having a hot water supply pump is operated for a predetermined period of time based on preset data to supply hot water to the coffee extraction mechanism and extract it from the coffee extraction mechanism. At the same time, by inserting a predetermined amount of money into the coin mechanism and operating a switch, instant coffee raw materials are supplied to the cup, and through the instant coffee hot water solenoid valve and pipe. In a vending device that supplies hot water to a cup, a standard amount of hot water used for one sale of the regular coffee is stored in advance, and the concentration of the regular coffee extracted by the coffee dispensing mechanism is adjusted to a predetermined concentration. A memory in which the amount of added hot water corresponding to the decreasing amount of hot water during the hot water supply period is stored in a changeable manner, and an actual amount of hot water supplied to the coffee extraction mechanism by subtracting the amount of added hot water from the standard amount of hot water stored in the memory when selling regular coffee. Actual hot water supply control means calculates the amount of hot water and operates the main hot water supply mechanism only for a period corresponding to this actual amount of hot water, and when regular coffee is sold, a hot water supply solenoid valve for instant coffee is operated for a period corresponding to the amount of added hot water stored in memory. This is an automatic vending machine that attempts to achieve the above object by being equipped with an additional hot water control means that is operated to supply hot water directly to a cup.

(Function) By providing such a means, the standard amount of hot water for regular coffee and the amount of hot water during the hot water supply period during which the concentration of regular coffee decreases to a predetermined concentration as described above are stored in the memory as the amount of added hot water. In this case, the amount of hot water added can be changed and set within an arbitrary range.

When selling regular coffee, the actual hot water amount control means subtracts the added hot water amount from the standard hot water amount stored in the memory to determine the actual hot water amount to be supplied to the coffee brewing mechanism, and the main hot water supply mechanism only operates for a period corresponding to this actual hot water amount. make it work.

At the same time, the hot water supply solenoid valve for instant coffee is operated by the hot water control means for a period corresponding to the amount of hot water stored in the memory to directly supply hot water to the cup.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings.

Figure 1 is an external view, in which 1 is a signboard advertising items for sale, 2 is an on-sale indicator lamp that indicates a sales status, 3 is a process indicator lamp that indicates an operating process, and 4 indicates an out-of-change status. 5 is a digital display that displays the amount of money inserted; 6 is a money slot for the coin mechanism; and 7 is a return lever for the inserted money. 8 is cafe au lait,
Instant coffee with sugar and cream, American coffee, Regular A coffee, Regular B coffee, Regular C coffee, Special coffee, Instant coffee with sugar, American coffee, Regular A coffee, Regular B coffee, Regular C coffee, Special coffee, Selection switch group for selecting a total of 14 cocoa items, 9 is a group of 7 functions that specify increase in hot water, decrease in hot water, increase in sugar, decrease in sugar, no sugar, increase in cream, and decrease in cream as necessary. A group of switches, 10 is a money return slot, and 11 is a sales slot where a cup is set.

Fig. 2 is a diagram schematically showing the configuration of each part housed in the housing, in which 12 is a water inlet joint connected to the water inlet, 13 is a water strainer, 14 is a water filter, and 15 is a water supply solenoid valve. , 16 is a system tank, and 17 is a water boiling tank. Water is supplied from the water outlet to the water strainer 13, the water filter 14,
The water is supplied to the lower part of the water heating tank 17 via the water supply solenoid valve 15 and the system tank 16 in this order. The system tank 16 is provided with a float 18 and a water level switch 19, and the water level in the water boiling tank 17 is maintained at a constant level by always maintaining a constant level of water.

An upper heater 20 and a lower heater 21 are provided in the water boiling tank 17. In addition, on the outer wall of the central part of the water boiling tank 17, a hot water solenoid valve 22 for instant coffee and a hot water solenoid valve 2 for cocoa are provided.
3. A hot water solenoid valve 24 for regular coffee and a first temperature sensor 25 are provided. Also,
A limiter 26 and a steam vent pipe 27 are provided at the top of the water boiling tank 17, and a second temperature sensor 28 and a temperature fuse 29 are provided in the middle of the steam vent pipe 27. Furthermore, a limiter 30 and a third temperature sensor 31 are provided on the lower outer wall of the water heating tank 17, and a fourth temperature sensor 32 is provided on the upper outer wall.

The regular coffee hot water supply electromagnetic valve 24 supplies hot water in the water boiling tank 17 to the metering tank 33. A float 34 is contained in this measuring tank 33.
is stored, and hot water in the metering tank 33 is supplied into a cylinder 37 constituting a coffee extraction mechanism via a check valve 36 by the operation of a procon pump 35 serving as a hot water supply pump. . Inside the cylinder 37 is a piston 3 that moves up and down.
8 is provided, and the hot water supplied by the procon pump 35 is supplied into the cylinder 37 through the piston 38.

Reference numerals 39, 40, and 41 are a regular A coffee canister, a regular B coffee canister, and a regular C coffee canister, which constitute the coffee raw material supply mechanism, respectively. Also, 42
is an instant coffee canister, 43 is a cream canister, 44 is a sugar canister,
45 is a canister for cocoa. A raw material discharge motor is housed in each of these canisters 39 to 45, and each raw material is discharged by the operation of the motor. The amount of raw material discharged at this time is approximately proportional to the operating time of the motor. The coffee raw materials discharged from the regular coffee canisters 39 to 41 are supplied between the piston 38 and the filter 46 in the cylinder 37 via a shutter (not shown) when the piston 38 rises. It's becoming like that. The filter 46 is wound up from the supply roll 47 side through the lower part of the cylinder 37 to the take-up roll 48 side.

A filter 4 located at the bottom of the cylinder 37
6 is fed into a mixing bowl 50 via a pipe 49. The raw materials discharged from the instant coffee canister 42, cream canister 43, and sugar canister 44 are directly supplied to the mixing bowl 50 via a shutter 51. Further, hot water from the hot water tank 17 is supplied to the mixing bowl 50 via the instant coffee hot water solenoid valve 22 and the pipe 52. Coffee mixed with sugar and cream in the mixing bowl 50 is supplied to a cup 53 set in the outlet 11.

Cocoa raw material discharged from the cocoa canister 45 is supplied to a blender funnel 54.
Further, hot water from the hot water tank 17 is supplied to the blender funnel 54 via the cocoa hot water supply electromagnetic valve 23 and a pipe 55.
A mixed liquid of cocoa raw material and hot water in the blender funnel 54 is stirred by a motor 57 in a blender housing 56 and supplied to the cup 53.

A drainage bucket 58 is installed below the sales port 11 to collect liquid leaking into the sales port 11. The amount of liquid accumulated in the drain bucket 58 is detected by a drain switch 59. Below the winding roll 48 is a bucket 60 for storing coffee grounds.
is installed. A fifth temperature sensor 61 is provided at the outlet of the procon pump 35, and a sixth temperature sensor 62 is provided near the check valve 36.

Note that the regular coffee hot water solenoid valve 2
4. The measuring tank 33, the pro-con pump 35, the check valve 36, etc. constitute a main hot water supply mechanism that supplies hot water to the coffee extraction mechanism, and the hot water supply solenoid valve 22 for instant coffee and the pipe 52 supply the hot water in the hot water tank 17. Direct sales outlet 1 through mixing bowl 50
This constitutes an additional hot water supply mechanism for supplying hot water to the cup 53 set at 1.

FIG. 3 shows a circuit configuration in which an earth leakage breaker 72 is connected to a plug 71 connected to a commercial AC power source, and a first solid is connected to the earth leakage breaker 72 through the limiter 26 and upper heater 20 in series. The output terminal of the state relay 73 is connected, and the output terminal of the second solid state relay 74 is also connected via the limiter 30 and the lower heater 21 in series. In addition, a power switch 75 is connected to the earth leakage breaker 72.
A control circuit 76 is connected thereto, and a series circuit of the water supply solenoid valve 15, water level switch 19, and drain switch 59 is also connected thereto.

The control circuit 76 includes a plurality of indicator lamps 77 built into each switch corresponding to each of the selection switch group 8, function switch group 9, and selection switch group 8.
A plurality of indicator lamps 78, the on-sale indicator lamp 2, and the process indicator lamp 3 are connected to each switch of the function switch group 9 and incorporated in each switch. In addition, the control circuit 7
6 is connected to various detection switches 79 such as a water outage detection switch, a paper feed detection switch, a pump float detection switch, a cup breakage detection switch, and a door switch, as well as the temperature sensors 25, 28, 31, 32, 61, 62. is connected. The control circuit 76 also includes the procon pump 35, each hot water supply solenoid valve 22, 23, 24,
Motor 57, instant coffee raw material discharge motor 80, cocoa raw material discharge motor 81, regular A coffee raw material discharge motor 82, regular B coffee raw material discharge motor 83, regular C coffee raw material discharge motor 84, cream raw material discharge motor 85, a sugar raw material discharge motor 86, etc. are connected, and a coin mechanism 87 is also connected. Further, the input terminals of the solid state relays 73 and 74 are connected to the control circuit 76, as well as a start switch 88 and a reset switch 89. Further, the control circuit 76 includes a keyboard 90 having a numeric keypad and function keys such as an input key, an erase key, and an operation key, a code display 91, a data display 92,
Cassette interface 93, various counters 9
4 is connected. The start switch 8
8. The reset switch 89, keyboard 90, code display 91, and data display 92 will be described later.
It is used when setting code and data in RAM. Further, the cassette interface 93 is a terminal for connecting a cassette tape, and by connecting the cassette tape here, it becomes possible to input and output programs and output data. Further, various counters 94 are used to count the number of sales for each item and to count the total number of sales.

The control circuit 76 includes a CPU as shown in FIG.
(Central Processing Unit) 101, ROM (Read Only Memory) 102, RAM (Random Access Memory) 103, Clock Oscillator 104, Interface Circuit 105, and Stabilized Power Supply 106
The CPU 101 includes a ROM 102,
RAM 103 and interface circuit 105 are connected via a bus line. Said CPU1
01 controls each section using the clock from the clock oscillator 104 as a timing base.
Note that the stabilized power supply 106 is the commercial AC power supply 10.
The AC power from 7 is stabilized into DC power and supplied to each part. The interface circuit 105
includes the coin mechanism 87 and each motor 57, 8.
Various motors 108 such as 0 to 86, various solenoid valves 109 such as the solenoid valves 15 and 22 to 24, various display lamps 11 such as the solid state relays 73 and 74, and each of the lamps 2, 3, 77 and 78.
0, the selection switch group 8, the function switch group 9, the various detection switches 7
9. Each temperature sensor 25, 28, 31, 3
Various temperature sensors 111, etc. 2, 61, and 62 are connected.

As shown in FIG. 5, the RAM 103 stores the standard amount of raw materials released at one time for each sales item, the standard amount of sugar, the standard amount of cream, the standard amount of hot water A,
and a data memory 112 storing data such as the amount of added hot water B when hot water is supplied directly to the cup 53 without passing through the coffee brewing mechanism, and the data memory 112 for the sales item selected by the selection switch group 8 after a coin is inserted. A hot water amount memory 113 that temporarily stores the standard amount A read out from 112, an additional amount memory 114 that temporarily stores the added hot water amount B of the sales item that was also selected, and an actual hot water amount C that is actually supplied to the coffee extraction mechanism. An actual amount memory 115 for temporarily storing the amount of water is formed.

Note that the standard amount of raw materials, standard amount of sugar, and standard amount of cream set in the data memory 112 are determined by the respective raw material discharge motors 80 to 8 of the canisters 39 to 45 that store raw materials, sugar, and cream, respectively.
The standard amount of hot water A is also stored as the opening time of the hot water supply solenoid valve 24 for regular coffee, and the added hot water amount B is stored as the opening time of the hot water supply solenoid valve 22 for instant coffee.

The CPU 101 has an actual hot water amount control function and an added hot water control function by performing the processing shown in FIG. 6 based on the program data of the ROM 102 when regular coffee is sold.

The actual hot water amount control function subtracts the added hot water amount from the standard hot water amount stored in the data memory 112 to determine the actual hot water amount to be supplied to the coffee brewing mechanism when regular coffee is sold, and operates the main hot water only for a period corresponding to this actual hot water amount. This function operates the supply mechanism.

The added hot water control function is a function that directly supplies hot water to the cup 53 by opening the hot water solenoid valve 22 for instant coffee only for a period corresponding to the amount of added hot water stored in the data memory 112 when selling regular coffee. be.

Specifically, when a predetermined amount of coins is inserted into the coin mechanism 87 and the selection switch 8 is operated while the on-sale display lamp 2 is lit (in this case, the function switch 9 is When is manipulated, the amount of hot water increases or decreases, the amount of sugar increases,
Reduced amount, increased amount of cream, reduced amount, and no sugar are set. ), controls the coin mechanism 87 to accept coins, return change, etc. Next, the standard amounts of raw materials, sugar, and cream of each data of the sales item selected with selection switch 8 are
Read from data memory 112 of RAM 103.
Then, canister 39 of the corresponding type of raw material
Drive circuits for raw material discharge motors 80 to 84 42 and 45, and sugar and cream canisters 4
The drive time described above corresponding to the standard amount is set in the drive circuits of the raw material discharge motors 86 and 85 of Nos. 4 and 43, respectively. Next, the standard hot water amount A of the corresponding item is read from the data memory 112 and the hot water amount memory 113 is read out.
Temporarily store it in

Next, at P1, it is checked whether the added hot water amount B is set in the storage area for the added hot water amount of the corresponding item. If additive hot water amount B is set, the sales item selected with selection switch 8 is A.
It is determined that the coffee is regular coffee of ~C, and the added hot water amount B is read and stored in the added amount memory 114. Then, the standard hot water amount A in the hot water amount memory 113
The amount of added hot water B in the added amount memory 114 is subtracted from the amount to obtain the actual amount C of hot water to be supplied to the coffee extraction mechanism, and the result is stored in the actual amount memory 115 . In addition, P1
If the added hot water amount B is not set in the area that stores the added hot water amount, the selected sales item is determined to be other than regular coffee, and the hot water amount memory 11 is
The standard hot water amount A of No. 3 is stored in the actual hot water amount memory 115.

When the actual amount of hot water has been stored in the memory 115, the cup 53 is supplied to the sales outlet 11, and the raw material discharge motors of each canister are driven to discharge standard amounts of raw materials, sugar, and cream. If the selling item is regular coffee, the corresponding canister 39 to 41 is the cylinder 3 of the coffee extraction mechanism.
A standard amount of coffee raw material is supplied into the chamber 7. When the supply of regular coffee raw materials is completed, the regular coffee hot water supply electromagnetic valve 24 is opened for a time corresponding to the actual hot water amount C in the actual hot water amount memory 115. At the same time, the instant coffee hot water solenoid valve 2
Open 2.

When the regular coffee hot water supply electromagnetic valve 24 is opened, hot water is supplied to the metering tank 33, the procon pump 35 is activated, and hot water is supplied through the check valve 36 into the cylinder 37 of the coffee extraction mechanism. Then, the piston 38 is driven downward,
Coffee is extracted through the filter 52 and supplied to the mixing bowl 50 through the pipe 49. Incidentally, the time change in the concentration of coffee extracted from the coffee extraction mechanism follows the concentration characteristic shown in FIG. 7 described above. Also, when the instant coffee hot water solenoid valve 22 is opened, hot water flows into the pipe 52.
The water is supplied to the mixing bowl 50 via the mixing bowl 50. In this mixing bowl 50, the sugar, cream, and cream supplied from the canisters 44 and 43,
Added hot water with a hot water amount B supplied from a hot water supply electromagnetic valve 22 for instant coffee and coffee with an approximate actual hot water amount C supplied from a coffee extraction mechanism are stirred and discharged into a cup 53 set in a vending spout 11.

In the vending machine configured in this way,
The amount of hot water B added to the standard amount of hot water A in the regular coffees A to C in the data memory 112 in FIG. The hot water supply period shown in is set to be a hot water supply period _T1 that sufficiently covers the section where the coffee concentration shows a high value.
In this case, the above hot water supply period T ₁ has elapsed since the start of supply of hot water to the coffee extraction mechanism (t=t ₃ )
The hot water supply will be stopped. Then, the insufficient hot water amount B obtained by subtracting the actual hot water supply period T ₁ from the standard hot water supply period T ₀ is supplied from the instant coffee hot water supply solenoid valve ₂₂ during the actual hot water supply period T 1 . Therefore, the cup 53 is supplied with a standard amount of coffee. As a result, the coffee extraction period is (T ₀ − T ₁ )
will be shortened.

Note that in FIG. 7, hot water is supplied instead of coffee with a concentration corresponding to that from time t ₃ to time t ₂ , but the coffee concentration of the coffee extracted during this period is extremely low as mentioned above. Therefore, even if the coffee is replaced with hot water, the overall concentration of coffee supplied to the cup 53 hardly decreases.

In this way, the coffee extraction time can be shortened without almost reducing the coffee concentration, so the sales time for one customer can be shortened and the customer will not have to wait for a long time. Additionally, sales efficiency can be improved.

Furthermore, in the embodiment, the conventional instant coffee hot water supply solenoid valve 22 and pipe 52 are used as the additive hot water supply mechanism, so the mechanical structure is more complicated than that of a conventional vending machine. Never.

Furthermore, the frequency of use of the vending machine changes depending on where the vending machine is installed. If you use it frequently, cup 1
Although there is a strong desire to shorten the sales time per cup, the demand for shortening the sales time is not so high in places where the product is used infrequently. In this embodiment, the value of the amount of added hot water B stored in the data memory 112 can be changed within a certain range, so if the installation is in a place where the number of customers is low, the value of the amount of added hot water B can be set to a small value. If the coffee cup is set in a place that is frequently used by customers, the amount of added hot water B can be set to a large value within a range that does not significantly reduce the coffee concentration in the entire cup.

[Effects of the Invention] As explained above, according to the present invention, when regular coffee is sold, the amount of added hot water is directly supplied to the cup through the hot water supply solenoid valve for instant coffee without passing through the coffee extraction mechanism.
The coffee extraction time can be shortened without almost reducing the regular coffee concentration, thereby shortening the sales time per cup of coffee, improving customer service and sales efficiency.

Further, since the amount of added hot water is supplied through the hot water supply solenoid valve for instant coffee, the mechanical structure is not complicated and can be realized with a simple structure compared to the conventional method.

Furthermore, by making it possible to change and set the value of the amount of added hot water stored in the memory, it has a predetermined range, so the amount of added hot water for regular coffee can be adjusted depending on the location of the vending machine, the type of regular coffee, etc. and can be changed.

[Brief explanation of drawings]

The figures show a vending machine according to an embodiment of the present invention, in which Fig. 1 is an external view, Fig. 2 is a schematic diagram showing the internal configuration, Fig. 3 is a circuit configuration diagram, and Fig. 4 is a schematic diagram showing the internal configuration.
The figure is a block diagram showing the main part configuration of the control circuit in Figure 3, Figure 5 is a diagram showing the main memory configuration of RAM, Figure 6 is a flowchart showing regular coffee sales control processing by the CPU, and Figure 7 is a diagram showing the main part configuration of the control circuit in Figure 3. The figure is a coffee concentration characteristic diagram. 8...Selection switch, 9...Function switch, 11...Sales port, 17...Water boiling tank, 20...Upper heater, 21...Lower heater, 22...Solenoid valve for hot water supply for instant coffee, 24 ...Hot water solenoid valve for regular coffee,
35...Procon pump (hot water pump), 37...
...Cylinder, 38...Piston, 39,40,4
1...Regular coffee canister, 46...
... Filter, 53 ... Cup, 76 ... Control circuit, 82, 83, 84 ... Regular coffee material discharge motor, 87 ... Coni mechanism, 101 ...
... CPU (central processing unit), 102 ... ROM (read only memory), 103 ... RAM (random access memory), 112 ... data memory, 113 ... hot water amount memory, 114 ... addition amount memory , 115...Actual hot water amount memory.

Claims (1)

[Claims] 1. By inserting a predetermined amount of money into a coin mechanism and operating a switch, a regular coffee raw material supply mechanism is operated for a predetermined time based on preset data to supply coffee raw materials to a coffee extraction mechanism. At the same time, a main hot water supply mechanism having a hot water supply pump is operated for a predetermined time based on preset data to supply hot water to the coffee extraction mechanism, and the coffee extracted from the coffee extraction mechanism is set in the sales outlet. On the other hand, by inserting a predetermined amount of money into the coin mechanism and operating a switch, instant coffee raw materials are supplied to the cup, and the hot water is supplied to the cup through the instant coffee hot water solenoid valve and pipe. In the vending machine, a standard amount of hot water used for one sale of the regular coffee is stored in advance, and the amount of hot water is stored in advance in a hot water supply period during which the concentration of the regular coffee extracted by the coffee extraction mechanism decreases to a predetermined concentration. a memory in which a corresponding amount of added hot water is stored in a changeable manner; and when selling the regular coffee, the amount of added hot water is subtracted from the standard amount of hot water stored in the memory to determine the actual amount of hot water to be supplied to the coffee extraction mechanism; Actual hot water amount control means that operates the main hot water supply mechanism for a period corresponding to the actual amount of hot water; and when selling the regular coffee, the hot water supply solenoid valve for instant coffee operates for a period corresponding to the amount of added hot water stored in the memory. A vending machine characterized by comprising: an additional hot water control means that is operated to directly supply hot water to the cup.