JPH10302141A - Drink supply device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate the dregs of drink components and the incrustations as well as the scale at a low cost by using the carbonated water to cleanse the stains such as the scale, the incrustations, the drink dregs, etc. SOLUTION: A sirup tank 12 receives the gas pressure from a carbon dioxide cylinder 10 and discharges an undiluted sirup solution to a sirup cooling heat exchanger 15. The exchanger 15 is soaked into cooling water tank 7 to cool the undiluted sirup solution. The cooled undiluted sirup solution is poured into a cup 44 via a cooled sirup pipeline 16 and a sirup valve 17. A carbonator 18 mixes the carbon dioxide with water to generate the carbonated water, and the cooling water and the carbon dioxide are poured through a cooling water pipeline rate and a carbon dioxide pipeline b20 respectively. The generated carbonated water is poured into the cup 44 by the carbon dioxide pressure and via a carbonated water pipeline a21 and a carbonated water valve 22. Thus, it is possible to eliminate the scale, the drink component dregs and the incrustations at a comparatively low cost.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a beverage supply device such as a cup-type beverage vending machine for dispensing beverages in cup containers.

[0002]

2. Description of the Related Art Conventionally, a cup-type beverage vending machine temporarily stores water supplied from a tap water in a water reservoir, and heats the water stored in the water reservoir to a predetermined temperature by a heater. The carbonated water to be heated and stored in the hot water tank, and provided for the carbonated beverage, guides the water stored in the water reservoir to the carbonator and mixes with the carbon dioxide supplied from the carbon dioxide gas cylinder to generate carbonated water.

[0003] When selling hot beverages, hot water, syrup and powdery raw materials are introduced into a mixing ball, and the ingredients are mixed by a stirring blade provided on the mixing ball and then poured into a cup.

On the other hand, at the time of selling carbonated beverages, carbonated water generated by a carbonator, raw materials of syrup and ice are directly poured into a cup.

[0005] In the cup-type beverage vending machine configured as described above, scale (scale) is deposited on the inner wall of the hot water tank, the surface of the heater, the inner wall of the pipe, and the solenoid valve for opening and closing the pipe. Remnants and scales of the beverage components accumulate on the inner wall of the pipe that comes into contact with the mixing ball or the beverage, and the flow deteriorates and various bacteria grow.

As a technique for solving such inconveniences,
JP-A-1-132209 and JP-A-4-90093
Is disclosed.

Japanese Unexamined Utility Model Publication No. 1-132209 is a technique relating to a cartridge type filter having a built-in scale preventive agent, and by connecting this to a water pipe, scale components can be removed.

On the other hand, Japanese Patent Application Laid-Open No. 4-90093 discloses a method in which a chlorine generator in a water reservoir is provided with a high chlorine concentration to wash a drinking pipe to remove scale and sterilize the drinking water.

[0009]

However, in the conventional method, when a filter is used, the filter becomes expensive and requires maintenance work such as replacement. Also,
In the case of high-concentration chlorine washing, scales deposited on the hot side cannot be removed, although scales on the cold side can be removed and sterilized, and power consumption increases because high-concentration chlorine is generated.

The present invention has been made to solve the above-mentioned conventional problems, and an object of the present invention is to remove scales, residue and scale of beverage components relatively inexpensively.

[0011]

In order to solve this problem, a beverage supply apparatus according to the present invention is provided with a carbonated water supply means for supplying carbonated water, and a dirt portion to which dirt such as hot water, water scale and remaining beverages adheres. Carbonated water washing means for injecting carbonated water and washing dirt with carbonated water.

[0012] Further, a heating means for heating the water to the selling temperature by induction heating or the like, a circulating means including a circulation path including the heating means and a pump, a carbonated water supply means for supplying carbonated water, Carbonated water washing means for injecting carbonated water and circulating the carbonated water by the pump to wash dirt in a circulation path including a heating means.

The carbonated water supply means comprises a carbonator or the like for mixing carbon dioxide gas and water in order to generate carbonated water for carbonated beverages.

A dirt condition estimating means for estimating the dirt condition of the dirt site or the circulation path based on the number of cup beverages sold, an integrated value of the heating time by the heating means, or an elapsed time since the previous cleaning; A cleaning condition determining means for determining cleaning conditions such as a cleaning time, a cleaning timing, and an amount of carbonated water by the carbonated water cleaning means according to the condition.

Further, a dirt condition input means for inputting water quality such as hardness of water supplied to the cup vending machine or a dirt condition of a beverage pipe and a circulation path, etc., and dirt for correcting a dirt condition estimated value based on the input dirt condition. Condition correction means.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In the invention according to claim 1 of the present invention, carbonated water is injected into a stained portion to which stains such as scales, scales and remaining beverages adhere, and the stains are washed with carbonated water. At first, it has an effect of removing residual scum and water scale of beverage components.

According to the second aspect of the present invention, since the carbonated water is injected into the circulation path and the carbonated water is circulated by the pump to clean the dirt in the circulation path including the heating means, the scale generated in the circulation path is removed. Has the effect of effectively removing.

In the invention according to claim 3 of the present invention, the carbonated water supply means is constituted by a carbonator or the like for mixing carbon dioxide gas and water in order to generate carbonated water for carbonated beverages.
It has the effect of removing scale and other residues and scales of beverage components relatively inexpensively.

In the invention according to claim 4 of the present invention, the degree of soiling of the soiled portion or the circulation path is estimated and estimated based on the number of cup beverages sold, the integrated value of the heating time, the elapsed time since the previous washing, and the like. Since cleaning conditions such as cleaning time or cleaning time or amount of carbonated water are determined according to the degree of contamination,
It has the effect of effectively removing scale, scale residue and scale from beverage components.

According to a fifth aspect of the present invention, water quality such as hardness of water supplied to a cup vending machine or the degree of dirt on a beverage pipe or a circulation path is input, and the degree of dirt is estimated from the input dirt conditions. Since the value is corrected, it has an effect of removing scales and remaining residues and scales of the beverage components more effectively.

Hereinafter, an embodiment of the present invention will be described with reference to FIG.
The description will be made with reference to the drawings. (Embodiment 1) FIG. 1 is a schematic configuration diagram of a cup-type beverage vending machine of the present embodiment. In FIG. 1, reference numeral 1 denotes a water reservoir for storing tap water, which is supplied with tap water from a tap pipe 3 directly connected to tap water via a tap valve 2. The water reservoir 1 is provided with a float SW (not shown). The water valve 2 is opened when the water level falls below the reference value, and the water valve 2 is closed when the water level falls to the reference value.

Reference numeral 4 denotes a high-pressure pump for sending out water in the water reservoir 1, and reference numeral 5 denotes a water-cooling heat exchanger for cooling water, which is connected by a water pipe a6. Reference numeral 7 denotes a cooling water tank which is cooled to around 0 ° C. by a cooling system (not shown).

The water cooling heat exchanger 5 is immersed in the cooling water tank 7, and the water flowing into the water cooling heat exchanger 5 is cooled here. The water cooled by the water cooling heat exchanger 5 is a cold water pipe a.
It is poured into the cup 44 through the cold water valve 9 through 8.

Reference numeral 10 denotes a carbon dioxide gas cylinder, and 11 denotes a regulator for keeping the pressure of the carbon dioxide gas constant. Reference numeral 12 denotes a syrup tank which is a storage container for a syrup undiluted solution.
The syrup stock solution is discharged to the syrup cooling heat exchanger 15 through the syrup pipe 14 by receiving the gas pressure from the carbon dioxide gas cylinder 10 through 13.

The syrup cooling heat exchanger 15 is immersed in the cooling water tank 7 and cools the syrup stock solution. The cooled undiluted syrup solution is poured into the cup 44 through the cold syrup pipe 16 and the syrup valve 17.

Reference numeral 18 denotes a carbonator for mixing carbonated gas and cold water to produce carbonated water.
Carbon dioxide gas is injected from the carbon dioxide pipe b20. The generated carbonated water is poured into the cup 44 via the carbonated water valve 22 through the carbonated water pipe a21 by the carbon dioxide gas pressure.

The pressure in the carbonator 18 is about 5 kg / cm 2, and the concentration of the generated carbonated water is 3.4 to 3.7 GV.
(Gas volume). Here, 1 GV is a state in which the same volume of carbon dioxide as the beverage is dissolved at 0 ° C. and 1 atm.

Numeral 23 denotes a heating means constituted by an induction heating (IH) device for heating water by a heating element 48 immersed in water, and a water pipe b24, an IH water supply valve 25, a circulation pump 26, and an IH water supply pipe 27. Water is supplied through.

Reference numeral 28 denotes a circulation path valve, and 29 denotes a circulation pipe. The circulating means 30 includes a circulating pump 26 and an IH water supply pipe 2.
7, circulation path valve 28, circulation pipe 29 and heating means 23
And circulates water and carbonated water for washing. 3
Reference numeral 1 denotes a tapping valve for tapping hot water heated to a predetermined temperature to a mixing ball 38 through a hot water pipe 32.

Reference numeral 33 denotes a canister for accommodating powdered raw materials for hot beverages.
4, a sugar canister 35, a cream canister 36, and a shooter 37 that carries each powder to a mixing ball 38.

Reference numeral 38 denotes a mixing ball, which comprises a mixer 39 for pouring a predetermined amount of hot water and powdered raw material, a pulsator 40 for stirring the raw material, a beverage valve 41 for pouring the mixed beverage into a cup 44, and a beverage pipe 42. I have.

Reference numeral 43 denotes a cup station, which conveys the cup 44 from a cup dispenser (not shown), pours each beverage into the cup 44, and provides it to the customer.

Reference numeral 45 denotes a carbonated water pipe b,
Is connected to the IH water supply pipe 27 via a carbonated water cleaning valve 46, and at the time of cleaning, the carbonated water cleaning valve 46 is opened to inject carbonated water into the circulation path by carbon dioxide gas pressure. The carbonated water cleaning means 47 includes the carbonator 18, the carbonated water pipe b45, and the carbonated water cleaning valve 46.

FIG. 2 is a detailed view of the circulation means 30 including the induction heating device 23 as a heating means. A heating element 48 described later is provided inside the induction heating device 23 and is immersed in water.

In the present embodiment, the power consumption of the induction heating device is set to about 3 kW, and the heat retaining tank for temporarily storing hot water used in the conventional cup-type beverage vending machine is not used. Tap water at room temperature at about 3 kW for 90 seconds
It can be heated to about ° C.

The volume of water stored inside the induction heating device 23 is designed to be about 200 cc (more than one cup of drink). During the sales operation or during the standby, the induction heating device is energized for the next sales. Make hot water of about 90 ° C, IH container 4
It is also possible to keep the temperature within 9.

When supplying water to the induction heating device 23, IH
The water supply valve 25 and the tapping valve 31 are opened, and water is supplied from the water reservoir 1 by the high-pressure pump 4 through the water pipe b24. When water is heated by the induction heating device 23, the IH water supply valve 25 and the tapping valve 31 are closed, the circulation valve 28 is opened, and the heat is supplied to the induction heating device while the water is circulated by the circulation pump 26 to heat the heating element 48. I do.

Then, when the water temperature is detected by a tapping temperature thermistor 52 to be described later and reaches a predetermined temperature (about 90 ° C.), the induction heating device 23 and the circulation pump 26 are stopped, and the circulation valve 26 is stopped.
Is closed, the IH water supply valve 25 and the hot water supply valve 31 are opened, and hot water is supplied from the hot water supply valve 31 while supplying water to the induction heating device 23 by the high-pressure pump 4.

FIG. 3 is a sectional view of the induction heating device 23.
Reference numeral 48 denotes a heating element in which a metal plate is spirally wound and is immersed in water. Reference numeral 49 denotes an IH container for housing a heating element, which is filled with water and flows from a water supply side (lower side) to a tapping side (upper side). Reference numeral 50 denotes a coil wound along the outer periphery of the IH container 49, and a high-frequency magnetic field shown in FIG.

An overcurrent flows in the heating element 48 in a direction to cancel the high-frequency magnetic field, generating heat and heating water. Reference numeral 51 denotes a feed water temperature thermistor provided near the water supply side of the heating element 48, and detects a water temperature before being heated by the heating element 48.

Reference numeral 52 denotes a tapping temperature thermistor provided in the vicinity of the tapping side of the heating element 48, and detects the temperature of the water heated by the heating element 48.

The beverage manufacturing operation and the washing operation with carbonated water of the cup-type beverage vending machine configured as described above will be briefly described.

When providing carbonated beverages, the high pressure pump 4
To open the chilled water valve 9 and supply a predetermined amount of chilled water to the cup 44.
, The carbonated water valve 22 is opened, a predetermined amount of carbonated water is poured from the carbonator 18 into the cup 44, and the syrup valve 17 is opened.
And pour a predetermined amount of syrup into the cup 44. Then, a predetermined amount of ice is poured into the cup 44 from an ice maker (not shown).

When providing a hot beverage such as coffee, the water is heated by the induction heating device 23 while circulating the water in the circulation path by the circulating means 30, and when the temperature reaches a predetermined temperature, the water is supplied to the mixing ball 38 by a predetermined amount. Coffee powder canister 34, sugar canister 35, cream canister 36
Is carried out to the mixing ball 38 in a predetermined amount. The beverage is mixed with the mixing ball 38, the beverage valve 41 is opened, and the beverage is poured into the cup 44 through the beverage pipe 42 and provided.

On the other hand, when cleaning the circulation path, the heating element 48, the hot water pipe 32, and the mixing ball 38 with carbonated water,
H water supply valve 25 is closed, carbonated water cleaning valve 46, circulation valve 26, tapping valve 31 and beverage valve 41 are opened,
The carbonated water is circulated through the circulation path, the hot water pipe 32, and the mixing ball 38.
Pour into At this time, since the hot water supply valve 31 and the beverage valve 41 are open, the hot water is drained to a drain tank (not shown) through the beverage pipe 42.

After the beverage pipe 42 is sufficiently washed with carbonated water, the carbonated water washing valve 46, the tapping valve 31 and the beverage valve 41 are closed (the circulation path, the hot water pipe 32 and the mixing ball 38 are filled with carbonated water). Then, the circulation pump 26 is driven to circulate the carbonated water in the circulation path to promote the cleaning.

Next, the principle of cleaning with carbonated water will be described. Scale is called scale and its main component is calcium carbonate (CaCO ₃ ), which exhibits negative solubility characteristics with respect to temperature. That is, calcium carbonate precipitates in a high temperature range and grows on a scale. The saturated dissolution temperature of the calcium carbonate upper limit (300 PPM) based on tap water quality is 70 ° C.

The average calcium carbonate content of tap water in Honshu is less than 100 PPM (Okinawa has 200 PPM).
As described above, scale is easily formed on the surface of the heating element for heating tap water or on the draft surface (water evaporates easily).

In fact, in a cup-type beverage vending machine, measures against scale are important for maintenance, and are problems to be solved.

The principle of formation of calcium carbonate (CaCO ₃ : a major component of the scale) is represented by the following chemical reaction formula.

[0051]

Embedded image

Calcium bicarbonate (Ca) dissolved in water
(HCO ₃ ) ² ) is heated to generate water-insoluble calcium carbonate and carbon dioxide gas.

On the contrary, the principle of dissolving calcium carbonate in carbonated water is shown by the following chemical reaction formula.

[0054]

Embedded image

The above carbonate-based chemical reaction is in a mobile equilibrium state and is governed by the concentration of carbon dioxide gas. That is, when the concentration of carbon dioxide contained in the carbonated water is lower than the equilibrium carbon dioxide concentration of the chemical reaction, the water is saturated with calcium carbonate and becomes unstable (crystal formation of calcium carbonate).

On the other hand, when the concentration is higher than the equilibrium carbon dioxide concentration, calcium carbonate is dissolved and the aqueous solution is stabilized.

As described above, the carbonated water has an effect of removing scale and an effect of removing residual scum and scale of the beverage component by a dissolving action.

FIG. 4 is a functional block diagram showing the function of the carbonated water cleaning means 47. 53 is a cup beverage sales number counting means for counting the number of cup beverages sold since the previous cleaning, 54 is a heating time integrating means for integrating the time when water is heated by the induction heating device 23, and 55 is a heating time integrating means from the previous cleaning time. Elapsed time integrating means for integrating the elapsed time.

Reference numeral 56 denotes a dirt condition estimating means for estimating the dirt condition of the circulation path and the mixing ball. The dirt condition is estimated based on the data of the cup beverage sales number counting means 53, the heating time integrating means 54 and the elapsed time integrating means 55. I do.

That is, it is considered that the stain due to the hot water scale correlates with the integrated heating time value, and the stain due to the remaining beverage residue and the water scale correlates with the number of cup beverages sold and the elapsed time from the previous washing time.

The dirt condition estimating means 56 adopts the estimated value with the most advanced dirt condition among the estimated values based on the respective data. Reference numeral 57 denotes a cleaning condition determining unit which determines a cleaning time from an estimated value of the degree of contamination and outputs the determined cleaning time to the carbonated water cleaning unit 30. The carbonated water cleaning means 30 performs cleaning with carbonated water for the determined cleaning time.

Table 1 shows the relationship between the number of cup drinks sold since the previous cleaning, the estimation of the degree of contamination, and the required cleaning time, and Table 2 shows the relationship between the accumulated heating time, the estimation of the degree of contamination, and the required cleaning time. Table 3 shows the relationship between the integrated value of the elapsed time since the previous cleaning, the estimation of the degree of contamination, and the required cleaning time.

[0063]

[Table 1]

[0064]

[Table 2]

[0065]

[Table 3]

Reference numeral 58 denotes tap water hardness input means. When the operator sets the hardness of calcium carbonate or the like at the initial setting stage at a level of 100 PPM or less, the standard is set to "standard";
In the case of M or more, "high hardness" is input.

Numeral 59 designates an over / under cleaning input means. The operator observes the degree of contamination after the cleaning and inputs "over cleaning" if the cleaning is excessive, and inputs "insufficient cleaning" if the cleaning is insufficient. The dirt condition input means 60 is constituted by hardness input means 58 and cleaning excess / deficiency input means 59.

Reference numeral 61 denotes a dirt condition correcting means for correcting the dirt condition estimated by the dirt condition estimating means 56 on the basis of the information on the hardness and the excess / defectiveness of the cleaning input by the operator.

Table 4 shows the amount of correction for the degree of contamination.

[0070]

[Table 4]

In FIG. 8, the contamination degree correction amount “one rank up” means that the estimated contamination degree is raised by one rank. For example, when the estimated value is “small”, it is corrected to “normal”. Conversely, the contamination level correction amount “one rank down” means that the estimated contamination level is lowered by one rank. For example, when the estimated value is “many”, it is corrected to “normal”. The lower limit of the stain correction amount is “small” and the upper limit is “large”.

In the present embodiment, the washing time with carbonated water is set at midnight, when the sale of cup beverages is extremely small, and the frequency is selected (washing once a day, washing once every two days, Washing times) shall be decided by the operator. Also,
Stop sales during cleaning.

As described above, the cup-type beverage vending machine of the present embodiment has the carbonator 18 for supplying carbonated water, the circulation path including the heating element 48, the hot water pipe 32, the mixing ball 38, and the beverage pipe 42. Since the apparatus is provided with the carbonated water washing means 47 for injecting water and washing dirt with carbonated water, there is an effect that scales, residual scum of beverage components and scale can be removed.

Further, a heating means for heating water to the selling temperature by induction heating or the like, a circulation means 30 comprising a circulation path including an induction heating device 23 and a circulation pump 26 and the like, a carbonator 18 for supplying carbonated water, Carbon dioxide water is injected into the circulation path, and the carbon dioxide water is circulated by the circulation pump 26 to clean the dirt in the circulation path. Therefore, the scale generated in the circulation path is effectively removed. effective.

Further, the carbonated water supply means is constituted by the carbonator 18 for mixing carbon dioxide gas and water in order to produce carbonated water for carbonated beverages. There is an effect that it can be removed relatively inexpensively.

Further, the cup beverage sales number counting means 53
A contamination level estimating means 56 for estimating the degree of contamination of the dirt site or the circulation path based on the data of the heating time integrating means 54 and the elapsed time integrating means 55, and determining a cleaning time by the carbonated water cleaning means according to the estimated degree of contamination. Since the cleaning condition determining means 57 is provided, there is an effect that the scale, the residual scum and the scale of the beverage components can be effectively removed.

Further, the hardness of calcium carbonate or the like is 100 PP.
A dirt condition comprising hardness input means 58 for inputting standard hardness and high hardness using M as a guide, and cleaning excess / deficiency input means 59 for an operator to observe the degree of dirt after cleaning and to input overcleaning or insufficient cleaning. Since the input means 60 and the dirt condition correction means 61 for correcting the dirt condition estimated value based on the input dirt condition are provided, the effect that the scale, the residual scum and the scale of the beverage component can be more effectively removed. There is.

In the present embodiment, the heating means 23 has been described as an induction heating device, but the same effect can be obtained by replacing the heating means with a sheathed heater.

The same effect can be obtained by providing a heat retaining tank in the circulation path and temporarily storing hot water. In this case, the volume of the heat retaining tank is used to change the amount of carbonated water to be injected and to change the washing conditions. It is also possible.

[0080]

As described above, according to the present invention, a carbonated water supply means for supplying carbonated water, and carbonated water is injected into a dirt portion to which dirt such as scale, scale and remaining beverages adhere, and the dirt is carbonated. Since it is provided with a carbonated water washing means for washing with water, it is possible to remove scales, residual scum of beverage components and scale.

Further, a heating means for heating water to the selling temperature by induction heating or the like, a circulating means comprising a circulating path including the heating means and a pump, a carbonated water supplying means for supplying carbonated water, and a circulating path. Since there is provided carbonated water washing means for injecting carbonated water and circulating the carbonated water with the pump to wash dirt in the circulation path including the heating means, scale generated in the circulation path can be effectively removed.

Further, the carbonated water supply means is constituted by a carbonator or the like for mixing carbon dioxide gas and water in order to produce carbonated water for carbonated beverages. It can be removed relatively inexpensively.

Further, dirt condition estimating means for estimating the dirt site or the dirt condition of the circulation path based on the number of cup beverages sold, the integrated value of the heating time by the heating means, the elapsed time from the previous cleaning, and the like; Since it is provided with a washing condition determining means for determining washing conditions such as a washing time or a washing time by the carbonated water washing means or an amount of carbonated water according to the condition, the scale is effectively started, and the remaining residue and scale of the beverage component are effectively removed. Can be removed.

Further, a dirt condition input means for inputting water quality such as hardness of water supplied to the cup vending machine or a dirt condition such as a drinking pipe and a circulation path, and a dirt for correcting a dirt condition estimated value based on the input dirt condition. Since the condition compensating means is provided, it is possible to more effectively remove scales, residual scum and beverage scale of the beverage components.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of a cup-type beverage vending machine according to a first embodiment of the present invention.

FIG. 2 is a detailed view of a circulation unit of the embodiment.

FIG. 3 is a detailed view of the induction heating device of the embodiment.

FIG. 4 is a functional block diagram of the carbonated water cleaning means of the embodiment.

[Explanation of symbols]

 18 Carbonated water supply means 23 Heating means 30 Circulation means 47 Carbonated water cleaning means 56 Dirt condition estimation means 57 Cleaning condition determination means 60 Dirt condition input means 61 Dirt condition correction means

Claims (5)

[Claims] 1. A carbonated water supply means for supplying carbonated water, and a carbonated water cleaning means for injecting the carbonated water into a dirt site to which dirt such as scale, scale and beverage residue adheres, and cleaning dirt with carbonated water. A beverage supply device comprising: 2. A heating unit for heating water to a selling temperature by induction heating or the like, a circulating unit including a circulation path including the heating unit and a pump, a carbonated water supply unit for supplying carbonated water, and the circulating unit. A beverage supply device comprising: carbonated water washing means for injecting the carbonated water into a passage and circulating the carbonated water with the pump to wash dirt in the circulation passage including the heating means. 3. The beverage supply device according to claim 1, wherein the carbonated water supply means comprises a carbonator or the like that mixes carbon dioxide and water to generate carbonated water for carbonated beverages. . 4. A dirt condition estimating means for estimating the dirt condition of the dirt site or the circulation path based on the number of cup beverages sold, the integrated value of the heating time by the heating device, the elapsed time from the previous cleaning, and the like. 3. The beverage supply device according to claim 1, further comprising: a cleaning condition determining unit configured to determine a cleaning condition such as a cleaning time, a cleaning time, or an amount of carbonated water by the carbonated water cleaning unit in accordance with the degree of contamination. 5. A dirt condition input means for inputting water quality such as hardness of water supplied to a cup vending machine or a dirt degree of a drinking pipe and a circulation path, and the dirt degree estimating means is estimated from the input dirt condition. 5. The beverage supply device according to claim 4, further comprising: a stain condition correcting unit configured to correct the stain condition.