JPH08112204A - Beverage extracting apparatus for vending machine - Google Patents

Abstract

PURPOSE: To provide a deverage extracting apparatus for a vending machine capable of surely flowing an exact amount of steam into a mixture liquid of a material and hot water. CONSTITUTION: A beverage extracting apparatus for a vending machine extracts a beverage by blowing steam from a steam generator 30 into a mixture liquid of a material and hot water through a steam pipe 51. Pressurizing supplying means 13 pressurizes water by a pressure higher than the internal pressure of the steam pipe 51, and supplies the pressurized water into the steam generator 30 through a water supply pipe 12.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a beverage extracting device for a vending machine which extracts a beverage by filtering a mixed liquid obtained by mixing raw materials and hot water.

[0002]

2. Description of the Related Art Conventionally, as this type of beverage extracting device, the one described in Japanese Patent Laid-Open No. 4-354912 is known. This conventional beverage extractor consists of an extractor body that mixes ground beans and hot water to extract regular coffee, and a steam generator that blows steam into the mixture through a steam pipe when stirring and mixing. The steam is used to prevent chilling of the beverage for sale and to promote the extraction to improve the taste of the beverage. A supply pipe extending from the hot water tank above it is connected to the steam generator, and the hot water in the hot water tank is supplied from the hot water tank via the supply pipe due to the head pressure difference with the steam generator, generating steam. It is heated in a vessel to become steam. On the other hand, a blower is connected to the steam pipe, and the steam generated by the steam generator is supplied to the extractor main body through the steam pipe by the blower.

[0003]

In such a conventional beverage brewing apparatus, the supply pressure of the hot water supplied to the steam generator is determined by the head pressure difference between the hot water tank and the steam generator, and is therefore constant. There is a limit, for example, it is impossible to exceed the head pressure corresponding to the height of the vending machine. For this reason, the supply pressure of the hot water becomes extremely lower than the steam pressure of the generated steam, and the hot water may flow back from the steam generator to the hot water tank and cannot be sent to the steam generator. As a result, there has been a problem that a required amount of steam cannot be sent to the extraction device main body within a predetermined time (mixing time).

The present invention has been made in view of the above problems, and a beverage extractor for a vending machine capable of reliably and reliably blowing steam into a mixed liquid obtained by mixing raw materials and hot water. Its purpose is to provide.

[0005]

In order to achieve the above object, a beverage extraction device for a vending machine according to claim 1 mixes steam generated by a steam generator with a raw material and hot water through a steam pipe. In a beverage extraction device of a vending machine that blows into a mixed liquid to extract a beverage, pressurizes water at a pressure higher than the internal pressure of the steam pipe and supplies the pressurized water to a steam generator through a water supply pipe. It is characterized by having a supply means.

According to a second aspect of the present invention, there is provided the beverage extracting device for a vending machine according to the first aspect, wherein the pressure supply means is provided on the downstream side of the cistern.
It is a main pump that supplies water to each part of the vending machine.

A beverage extracting device for a vending machine according to a third aspect is the beverage extracting device for a vending machine according to the first or second aspect, which is provided in a water supply pipe and supplies water to a steam generator by a valve opening operation. An on-off valve for supplying and a controller for opening the on-off valve after the beverage is extracted are further provided.

A beverage extracting device for a vending machine according to a fourth aspect is the beverage extracting device for a vending machine according to the first or second aspect, wherein a door sensor for detecting opening and closing of a door of the vending machine and a water supply pipe. And an on-off valve for supplying water to the steam generator by a valve opening operation, and a controller for closing the on-off valve when the door sensor detects opening of the door. .

A beverage extracting device for a vending machine according to a fifth aspect is the beverage extracting device for a vending machine according to the first or second aspect, wherein the first temperature sensor for detecting the temperature in the steam generator and the water supply. An on-off valve provided on the pipe for supplying water to the steam generator by the valve opening operation, and a controller for closing the on-off valve when the temperature detected by the first temperature sensor is equal to or lower than a predetermined temperature are provided. Characterize.

A beverage extracting device for a vending machine according to a sixth aspect is the beverage extracting device for a vending machine according to the first or second aspect, wherein the second temperature sensor for detecting the outside air temperature and the water supply pipe are provided. An opening / closing valve for supplying water to the steam generator by the valve opening operation, and a controller for controlling the opening amount of the opening valve to decrease as the temperature detected by the second temperature sensor increases. To do.

A beverage extracting device for a vending machine according to a seventh aspect is the beverage extracting device for a vending machine according to the first or second aspect, which is provided in a water supply pipe and supplies water to a steam generator by a valve opening operation. An on-off valve for supply and a controller for controlling the opening amount of the opening valve to increase as the mixing time for mixing the raw material and the hot water increases.

A beverage extracting device for a vending machine according to claim 8 is the beverage extracting device for a vending machine according to claim 1 or 2, further comprising a timer for detecting a supply interval time of steam supplied by the steam generator. An on-off valve provided in the water supply pipe for supplying water to the steam generator by the valve opening operation, and a controller for controlling the opening amount of the opening valve to increase as the detected supply interval time increases It is characterized by

[0013]

In the beverage extracting device for a vending machine according to claim 1, the pressure supply means pressurizes the water to a pressure higher than the internal pressure of the steam pipe, and the pressurized water is supplied to the steam generator through the water supply pipe. Supply to. For this reason, the supply pressure of water to the steam generator is always maintained higher than the internal pressure of the steam pipe, and as a result, water is reliably supplied to the steam generator without backflowing in the water supply pipe. It is surely supplied to the mixed solution.

In the beverage extracting device of the vending machine according to the second aspect, water is supplied to the steam generator by a main pump which is provided on the downstream side of the cistern and supplies water to each part of the vending machine. Therefore, the main pump can also be used as a pump used for other components such as a hot water tank in the vending machine, and as a result, an increase in cost can be suppressed.

In the beverage brewing apparatus of the vending machine according to the third aspect, the controller operates the opening / closing valve for supplying water to the steam generator to open the valve after brewing the beverage. The pipe to be rinsed is rinsed. In this case, the steam is
Since it flows through the piping path at a speed that is tens of times faster than hot water, dirt inside the piping can be reliably removed. Further, since steam has a high temperature, it steams and softens stains in the pipe, so that the stains can be removed more reliably and sterilization can be performed.

In the beverage extraction device of the vending machine according to the fourth aspect, when the door of the vending machine is opened for replenishing, repairing and cleaning the raw materials, when the door sensor detects the open state of the door. , The controller closes the on-off valve. Therefore, even if the steam generator malfunctions at the time of repair or the like, since water is not supplied to the steam generator, it is possible to avoid a situation in which steam is spouted.

In the beverage extractor for a vending machine according to claim 5, the first temperature sensor detects the temperature in the steam generator, and when the detected temperature is below a predetermined temperature, the controller opens and closes the on-off valve. Close the valve. As a result, when the temperature inside the steam generator decreases due to a failure of the heater of the steam generator, a power failure, a voltage drop, or the like, water is not supplied to the steam generator. Therefore,
In the event of a failure or the like, it is possible to prevent a situation in which the steam generator cannot vaporize a predetermined amount of water and the water leaks to the brewing device, which deteriorates the quality of the beverage.

In the beverage extractor of the vending machine according to the sixth aspect, the second temperature sensor detects the outside air temperature, and the controller reduces the opening amount of the open valve as the detected temperature increases. Control. As a result, the amount of steam sent from the steam generator to the extraction device, that is, the heat energy, is controlled based on the outside air temperature, so that even if the outside air temperature changes, the supplied heat energy is automatically changed according to the change. The temperature at the time of extracting the beverage is constant throughout the four seasons, and the quality of the beverage is maintained constant.

According to the beverage extractor of the vending machine of the seventh aspect, the controller controls the opening amount of the opening / closing valve to increase as the mixing time for mixing the raw material and the hot water increases. Generally, the time for mixing the mixed liquid varies depending on the type of raw material, and is set to a time suitable for the type of raw material. Therefore, it is preferable to maintain the mixing temperature at an appropriate temperature depending on the type of raw material. . Therefore, by supplying the steam in accordance with the mixing time, the raw material and the hot water are mixed without excess or deficiency within the mixing time. As a result, the necessary components of the raw material are eluted while the unnecessary components are prevented from being eluted. Moreover, since only the required amount of steam is generated during the mixing time, the heat energy can be efficiently used.

According to the beverage extractor of the vending machine of the eighth aspect, the timer detects the steam supply interval time,
The controller controls so that the opening amount of the on-off valve increases as the detected supply interval time increases. As a result, the supply interval time becomes longer, and even if the temperature of the extraction device or the steam pipe drops, steam is supplied so as to compensate for that,
The temperature of the beverage during mixing is kept constant. This allows
The quality of the beverage is maintained constant, and the heat energy is efficiently used without generating unnecessary steam.

[0021]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A case where a beverage extracting device for a vending machine according to an embodiment of the present invention is applied to a cup type vending machine will be described below with reference to the accompanying drawings. In this vending machine, coffee cooked in the vending machine is provided to a product purchaser in a cup, and FIG. 1 is a structural diagram of a cooking section of the coffee. As shown in the figure, the cooking section 1 is roughly divided into a water supply section 2 and an extraction sales section 3.

The water supply unit 2 is provided on the cistern 11 for storing tap water and on the downstream side of the cistern 11, and pressurizes the water of the cistern 11 to supply it to each part in the vending machine through the water supply pipe 12. Pump (main pump) 13
A cooling water tank 14 for cooling the supplied water to supply it to the cup C as dilution water; and a hot water tank 15 for heating the supplied water to store hot water. In the water supply unit 2, after the water supplied from the tap water is temporarily stored in the cistern 11, the water pump 13 pressurizes the stored water and supplies it to the hot water tank 15, the cooling water tank 14 and the steam generator 30 described later. are doing. The hot water tank 15 heats the supplied water with the heater 15a to make hot water of 90 degrees or more and stores the hot water. The hot water stored in the hot water tank 15 is the hot water valve 15b.
Hot water is supplied to the extraction device (beverage extraction device) 24 described later via the. The cooling water tank 14 stores water cooled by a refrigerating cycle (not shown) and dilutes it by passing the supplied water through a cooling water pipe 14a arranged in a meandering manner in the cooling water. Cooled dilution water is supplied to the cup C via the water valve 14b.

The brewing and selling section 3 includes a cup supply device 21 for supplying a cup C, a coffee canister 23 for storing a coffee powder raw material (beverage raw material), and an extraction device for extracting coffee by mixing the powder raw material and hot water. 24, a cream canister 25 for storing cream, a sugar canister 26 for storing sugar, a syrup canister 27 for storing syrup, and sugar and cream supplied from the sugar canister 26 and the cream canister 25 according to a sales order, respectively. , A mixing ball 28 for mixing with the extracted coffee and a filter 2 from the water pump 13.
A steam generator 30 for evaporating the water supplied through 9 and sending it to the extraction device 24, and a cup holder 31 for placing the cup C are provided. The filter 29 generates pure water by removing magnesium and calcium contained in the water flowing in the water supply pipe 12,
A compound such as magnesium is prevented from adhering to the surface of a heat storage body 63 of the extraction device 24, which will be described later.

In the extraction and sales section 3, when the product selection switch (see FIG. 6) 84 is pressed, the cup supply device 21 supplies the cup C to the cup holder 31. At the same time, the powder raw material and the hot water are supplied to the extraction device 24 from the coffee canister 23 and the hot water tank 15, respectively.
But mix and stir these, extract coffee here,
The extracted coffee is supplied to the mixing ball 28.
In the mixing ball 28, the supplied coffee is mixed with cream and sugar, and then the mixed liquid mixture is supplied to the cup C. At the same time, the syrup and dilution water are supplied to the cup C from the syrup canister 27 and the cooling water tank 14, respectively, and the coffee is sold.

Next, the extraction device 24 and the steam generator 30, which are the main components of the present invention, will be described.

The extraction device 24, as shown in FIGS.
Cylinder 41 and beverage receiver 42 separable from cylinder 41
It has and. The cylinder 41 includes a stirring chamber 43 for mixing / stirring the powder raw material and the hot water, and an extraction chamber 44 for extracting coffee from the mixed / stirred mixed liquid. The agitation chamber 43 has an upper opening 45 at an upper portion, an outlet 46 having a smaller diameter than the upper opening 45 at a lower portion, and an inclined portion 47 inclined toward the outlet 46. The extraction chamber 44 is connected to the stirring chamber 43 via the outlet 46,
A beverage valve 48 driven by an extraction drive motor (not shown) controls communication with the stirring chamber 43.

The lower portion of the brewing chamber 44 is opened so that a paper filter 49 can be sandwiched between the brewing chamber 42 and the beverage receiver 42. By filtering the mixed liquid with the paper filter 49, coffee is extracted. , And supplies the extracted coffee to the beverage receiver 42. Further, the extraction chamber 44 is provided with a steam inlet 50 at the upper part, the steam inlet 50 is connected to the steam generator 30 via a steam pipe 51, and the steam pipe 51 is provided with an air valve 52. . The beverage receiver 42 has a beverage outlet 53 in the lower center.
The beverage discharge port 53 is connected to the mixing ball 28 via a beverage supply pipe 54, and the mixing ball 2
The communication with 8 is controlled by opening and closing a beverage valve 55 provided in the middle of the beverage supply pipe 54.

As shown in FIG. 5, the steam generator 30 has a heat insulating box 61 having excellent heat insulating properties and a concave portion 62, and is made of a material having a large heat capacity such as aluminum alloy or stainless steel. The heat storage body 63, the first thermostat 64 that detects the temperature of the heat storage body 63 and turns on / off at a predetermined temperature, the heater 65 that is on / off controlled by the first thermostat 64, and adjusts the supply amount of steam. A second thermostat (first temperature sensor) 66 and a lid 67 that covers the recess 62 are provided. The heater 65
Is connected in series with the contact 64a of the first thermostat 64 as shown in FIG. 7, and is controlled by the open / short of the contact 64a.

The lid 67 has a water supply port 71 and an air supply port 7.
2 and the steam outlet 73 are formed. Water supply port 7
1 and the air supply port 72 are connected to the water supply pump 13 and the air pump 75 via the water supply pipe 12 and the air pipe 74, respectively. A water solenoid valve (open / close valve) 76 for controlling the amount of water supply is attached in the middle of the water supply pipe 12, and the water solenoid valve 76 is controlled to be opened / closed by a control unit (controller) 81 described later. It The air pump 75 is controlled by the controller 81 so as to operate when the water solenoid valve 76 is opened. In addition, the steam outlet 73 is connected to the extraction device 24 via the steam pipe 51.
And the air valve 52.

In this steam generator 30, the water supply pipe 12
The water supplied via the is supplied to the concave portion 62, where it is vaporized into steam by the heat accumulated in the heat storage body 63, and is pressurized higher than the internal pressure of the steam pipe 51 by the air pump 75. It becomes a mixture with the pressurized air thus produced, and is supplied to the extraction device 24 via the steam pipe 51.

Next, the steam generator 30 and the extraction device 24
A control unit 81 for controlling the above will be described with reference to FIGS. 6 and 7. The control unit 81 is mainly composed of a microcomputer, a first control relay and a second control relay, and a door switch (door sensor) 82, an environmental temperature sensor (second temperature sensor) 83, a timer 87 are provided at the input ports of the microcomputer. , The second thermostat 66, and the product selection switch 84 are connected.

As shown in FIG. 7, the contact point 85 of the first control relay is connected in series with the contact points 66a, 82a and 76a of the second thermostat 66, the door switch 82 and the water solenoid valve 76, respectively. Here, the contact point 66a of the second thermostat 66 is opened when the temperature of the heat storage body 63 of the steam generator 30 becomes equal to or lower than a predetermined temperature (100 degrees in this embodiment). The door switch 82 is attached to a door (not shown) of the vending machine. When the door is opened, the contact 82a is opened, and when the door is closed, the contact 82a is short-circuited. There is. Also, the contact 8 of the second control relay
6 is connected in series with the contact 13a of the water pump 13. Thereby, the water pump 13 is controlled by the control unit 81.
Its operation is controlled. Also, the environmental temperature sensor 83
It is attached to the outside of the main body of the vending machine and detects the outside air temperature. The timer 87 starts counting when the supply of water to the steam generator 30 is completed, that is, when the water solenoid valve 76 is closed, and stops counting when the water solenoid valve 76 is next opened.

Next, a coffee extracting operation and a rinsing operation (washing operation) with the above-mentioned structure will be described.

First, the cylinder 41 is lowered by an extraction drive motor (not shown), and the lower end of the cylinder 41 is pressed against the beverage receiver 42 via the paper filter 49 (FIG. 2). Next, the hot water valve 15b, the coffee canister 23, and the air pump 75 start operating at substantially the same time. The hot water valve 15b supplies a predetermined amount of hot water, the coffee canister 23 supplies a predetermined amount of powder raw material, and the air pump 75 supplies pressurized air through the extraction chamber 44 into the stirring chamber 43, respectively. As a result, the powder raw material and the hot water are mixed in the stirring chamber 43. After a lapse of some time from this, the control unit 81 controls the water solenoid valve 7
By opening valve 6, a predetermined amount of water is supplied to the steam generator 30. The water is immediately vaporized into steam, supplied to the cylinder 41 together with the pressurized air, and blown into the mixed liquid in the stirring chamber 43. When the stirring step is completed, the beverage driving valve 48 is lowered by the extraction drive motor once to open the outlet 46 of the stirring chamber 43, whereby the mixed liquid of the powder raw material and the hot water is transferred from the stirring chamber 43 to the extraction chamber 44. .

In the step of moving this mixed solution from the stirring chamber 43 to the extraction chamber 44, the air valve 52 and the beverage valve 55 are used.
Are both opened by the extraction drive motor. When the air valve 52 is opened, it removes residual air and vapor in the extraction chamber 44 and facilitates the movement of the mixed liquid to the beverage supply pipe 54.

After that, the beverage valve 48 is raised to close the outlet 46, and the extracting device 24 is brought into the state shown in FIG. In this state, the mixed liquid is pressurized by the air pump 75, separated into coffee grounds and coffee by the paper filter 49, and then the coffee is supplied to the mixing ball 28 through the beverage supply pipe 54.

In the mixing ball 28, sugar or cream is added as needed. After that, coffee is poured into cup C and sold. After supplying the coffee, the cylinder 41 of the brewing device 24 is raised by the brewing drive motor, as shown in FIG. Paper filter 49
Is moved laterally with the coffee grounds by a paper filter feed motor (not shown), and at the same time, a new paper filter 40 is prepared.

When the coffee brewing operation is completed in the brewing device 24, the controller 81 drives the brewing drive motor to press the cylinder 41 against the beverage receiver 42 as shown in FIG. In this state, the control unit 81 closes the air valve 52 for a predetermined time, opens the beverage valve 55 and drives the air pump 75, and then opens the water electromagnetic valve 76 for a fixed time to generate the steam generator. Water is supplied to 30 to generate steam. The generated steam is supplied into the extraction chamber 44 together with the pressurized air, and is injected into the mixing ball 28 via the beverage supply pipe 54. Next, the control unit 81 closes the beverage valve 55 and opens the hot water valve 15a to inject hot water into the extraction chamber 44. Next, the control unit 81 closes the air valve 52 and opens the beverage valve 55.
As a result, the pressurized hot water is discharged to the cup holder 31 via the extraction chamber 44, the beverage supply pipe 54 and the mixing ball 28. As a result, the brewing chamber 44, the beverage supply pipe 54, and the mixing ball 28 are rinsed.

In this case, as compared with the case of rinsing with hot water only, the steam flows through the extraction chamber 44 and the beverage supply pipe 54 at a speed several tens of times faster than the hot water, so that the dirt attached to them can be surely removed. Can be dropped. Further, since the steam is high in temperature, the dirt in the extraction chamber 44 and the beverage supply pipe 54 is steamed and softened, so that the dirt can be removed more reliably and the dirt can be sterilized. Furthermore, since the rinse with hot water is also performed after the rinse with steam, the softened dirt can be removed more reliably.

When the door of the vending machine is opened for replenishment of raw materials, repair and cleaning, etc., when the door switch 82 detects the open state of the door, the control unit 81 causes the water solenoid valve to operate. The valve 76 is closed. Therefore, even if the steam generator 30 malfunctions at the time of repair or the like, since water is not supplied to the steam generator 30, it is possible to prevent a situation in which steam is spouted.

Further, the second thermostat 66 detects the temperature inside the steam generator 30 (the heat storage body 63), and when the detected temperature is lower than a predetermined temperature, the contact 66a is opened to supply water to the steam generator 30. Stop the supply of. The reason for performing such control is as follows. That is, the steam generator 3
When a heater failure, a power failure, a voltage drop, etc. occur at 0, the temperature inside the steam generator 30 drops, so the steam generator 30 cannot vaporize a predetermined amount of water, and the water is sent to the extraction device 24. Leaks out and reduces the quality of the beverage. When the temperature inside the steam generator 30 is lowered in this manner, the supply of water to the steam generator 30 is stopped as described above, thereby reliably preventing the water from leaking to the extraction device 24. can do. As a result, it is possible to prevent a situation in which water is injected into the mixed liquid to deteriorate the quality.

Further, the control unit 81 includes an environmental temperature sensor 8
3 controls the opening time (opening amount) of the water solenoid valve 76 according to the outside air temperature detected by the steam generator 30 to extract the water from the steam generator 30.
The amount of steam supplied to 4, that is, the thermal energy is controlled. As a result, even if the outside air temperature changes, the heat energy supplied can be automatically and appropriately adjusted according to the change, and the temperature of the beverage mixed in the extraction device 24 can be made constant, so that the four seasons can be maintained. , The quality of the beverage can be kept constant.

Further, the control unit 81 controls so that the opening time (opening amount) of the water electromagnetic valve 76 becomes longer as the mixing time for mixing the raw material and the hot water becomes longer. Therefore, the temperature of the mixed liquid that is mixed for an appropriate mixing time depending on the type of raw material is also appropriately maintained. As described above, by supplying the steam in accordance with the mixing time, the raw material and the hot water are mixed in just within the mixing time, and as a result, necessary components of the raw material are eluted and unnecessary components are prevented from being eluted. It In addition, since the required amount of steam is generated during the mixing time, the heat energy can be efficiently used.

Further, the control unit 81 increases the opening time (opening amount) of the water electromagnetic valve 76 as the supply interval time of the steam from the steam generator 30 to the extraction device 24 detected by the timer 87 becomes longer. Control to be. That is, when the steam is not continuously sold and the steam supply interval time becomes long, the temperature of the extraction device 24 and the steam pipe 51 decreases, but the opening time of the water electromagnetic valve 76 is made longer. As a result, steam is supplied so as to supplement the thermal energy for the temperature decrease. On the other hand, when the steam is continuously sold and the steam supply interval time is short, the temperatures of the extraction device 24 and the steam pipe 51 do not decrease so much. Shorter lengths supply less steam. As a result, since the temperature of the beverage at the time of mixing is kept constant, the quality of the beverage is kept constant, and the heat energy can be efficiently used without generating unnecessary steam.

As described above, according to this embodiment, the water supplied to the steam generator 30 is pressurized to a pressure higher than the internal pressure of the steam pipe 51, and the pressurized water is supplied to the steam generator via the steam pipe 51. Supply to 30. Therefore, the supply pressure of water to the steam generator 30 is always kept higher than the internal pressure of the steam pipe 51, so that the water does not flow backward in the supply pipe 12 and the necessary amount of water is surely ensured. Since the steam is supplied to the steam generator 30, the steam can be reliably supplied to the mixed liquid in the stirring chamber 43. Further, since the opening time of the on-off valve 76 is adjusted according to the outside air temperature, the mixing time of the mixed liquid, the steam supply interval time, etc., the steam can be supplied to the steam generator 30 without excess or deficiency.

Further, the water supply pump 13 for supplying water to the steam generator 30 can also be used as a pump used for other components of the vending machine such as the cooling water tank 14 and the hot water tank 15, thus increasing the cost. Can be suppressed.

In this embodiment, the coffee extracting device 24 has been described, but it goes without saying that the present invention can be applied to the extracting device of other extracted beverages such as green tea.

[0048]

As described above, according to the present invention, water is surely supplied to the steam generator without flowing backward in the water supply pipe, and as a result, steam is also reliably supplied to the mixed liquid. Also,
By using the main pump also as the pressurizing and supplying means, it is possible to suppress cost increase.

[Brief description of drawings]

FIG. 1 is a structural diagram of a cooking unit of a cup type vending machine according to an embodiment of the present invention.

FIG. 2 is a diagram for explaining the operation of the extraction device and the peripheral device of the embodiment.

FIG. 3 is a diagram for explaining the operation of the extraction device and the peripheral device of the embodiment.

FIG. 4 is a diagram for explaining the operation of the extraction device of the embodiment.

FIG. 5 is a side view in which a part of the steam generator of the embodiment is cut away.

FIG. 6 is a block diagram of a control unit and peripheral devices according to an embodiment.

FIG. 7 is an electric circuit diagram of a control system of the embodiment.

[Explanation of symbols]

 12 Water Supply Pipe 13 Water Pump 24 Extractor 30 Steam Generator 51 Steam Pipe 76 Water Supply Valve 81 Controller 82 Door Switch

Claims (8)

[Claims] 1. A beverage extraction device of a vending machine, wherein steam generated by a steam generator is blown into a mixed liquid of a raw material and hot water through a steam pipe to extract a beverage, the internal pressure of the steam pipe A beverage extraction device for a vending machine, comprising: a pressurizing and supplying unit that pressurizes water at a higher pressure and supplies the pressurized water to the steam generator through a water supply pipe. 2. The vending machine according to claim 1, wherein the pressurizing and supplying means is a main pump which is provided on the downstream side of the cistern and supplies water to each part of the vending machine. Beverage extractor. 3. An on-off valve provided on the water supply pipe for supplying water to the steam generator by a valve opening operation, and a controller for opening the on-off valve after extracting the beverage. The beverage extraction device for a vending machine according to claim 1 or 2, characterized in that. 4. A door sensor for detecting opening / closing of a door of the vending machine, an opening / closing valve provided in the water supply pipe for supplying water to the steam generator by a valve opening operation, and the door sensor opening the door. The beverage extraction device for a vending machine according to claim 1 or 2, further comprising: a controller that closes and operates the opening / closing valve when detecting. 5. A first for detecting a temperature in the steam generator
A temperature sensor; an opening / closing valve provided on the water supply pipe to supply water to the steam generator by a valve opening operation; and a closing operation of the opening / closing valve when a temperature detected by the first temperature sensor is equal to or lower than a predetermined temperature. 3. A beverage extraction device for a vending machine according to claim 1 or 2, further comprising: 6. A second temperature sensor for detecting an outside air temperature, an on-off valve provided in the water supply pipe for supplying water to the steam generator by a valve opening operation, and a temperature detected by the second temperature sensor is high. 3. A beverage extractor for a vending machine according to claim 1, further comprising a controller for controlling the opening amount of the on-off valve to be smaller. 7. The opening amount of the open valve increases as the mixing time for mixing the raw material and the hot water with the on-off valve provided in the water supply pipe and supplying water to the steam generator by the valve opening operation increases. The beverage extraction device for a vending machine according to claim 1 or 2, further comprising: 8. A timer for detecting a supply interval time of steam supplied by the steam generator; an on-off valve provided in the water supply pipe for supplying water to the steam generator by a valve opening operation; The beverage extraction device for a vending machine according to claim 1 or 2, further comprising: a controller that controls the opening amount of the opening valve to increase as the supply interval time increases.