JP2018030117A - Beverage feeding device and beverage feeding method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a beverage feeding device that allows a beverage to be irradiated with UV rays, with effects on the taste of the beverage inhibited, and a beverage feeding method.SOLUTION: A beverage feeding device comprises a channel 36 through which a beverage is fed, a microwave generator 50, and an emitter 58 that emits UV rays by microwaves. The emitter 58 is irradiated with microwaves generated by the microwave generator 50 so as to emit UV rays. The beverage is irradiated with the UV rays emitted from the emitter 58.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a beverage supply apparatus and a beverage supply method for supplying a beverage such as drinking water.

  The cup-type beverage vending machine cooks and sells various beverages such as hot beverages, carbonated beverages, and syrup beverages in a cup using supplied tap water as raw water. The tap water supplied to such a cup-type beverage vending machine is temporarily stored in a reservoir provided in the vending machine after removing chlorine and the like through a filter, for example. From there, the pump feeds cold water, hot water, carbonated water, and ice making water for beverage preparation into the machine. The raw water stored in the reservoir has a reduced sterilizing power because chlorine has been removed, and there is a possibility that when various germs are mixed, the raw water is directly discharged as cooking water for beverages.

  Therefore, by installing a chlorine generator in the reservoir and conducting regular electrolysis, it produces hypochlorous acid with sterilizing power from chloride ions contained in tap water, and suppresses the growth of bacteria in the channel The method is taken (for example, refer patent document 1).

  Since hypochlorous acid decreases over time, it is necessary to periodically perform electrolysis. However, the concentration of hypochlorous acid generated depends on the chloride ion concentration in tap water, so control is very important. It is known to be difficult. Furthermore, when the concentration of hypochlorous acid in cooking water is high, the odor remains in the cooked beverage and the taste may be lowered. Therefore, a new method for inhibiting the growth of bacteria that is persistent and does not use a drug that affects beverages has been studied. In addition, when water adheres to the outside of the cold water nozzle that discharges cold water, the bacteria adhere to the nozzle, and the bacteria may enter the cold water nozzle by growing.

JP 2006-318185 A

  The objective of this invention is providing the drink supply apparatus and drink supply method which can suppress the influence on the taste of a drink and can perform an ultraviolet irradiation process.

  The present invention comprises a flow path for supplying a beverage, a microwave generating means, and a light emitter that emits ultraviolet light by the microwave, and irradiates the light emitter with the microwave generated by the microwave generating means. A beverage supply device that performs ultraviolet irradiation treatment of the beverage with ultraviolet rays emitted from the light emitter.

  In the beverage supply device, the microwave generated by the microwave generating means is irradiated to the light emitter, and the ultraviolet light emitted from the light emitter is irradiated with ultraviolet light, and the beverage is supplied to the flow path. It is preferable to irradiate the outside of the mouth with the microwave and ultraviolet rays emitted from the light emitter.

  Further, the present invention provides a beverage supply method in which a microwave generated by a microwave generating means is irradiated to a light emitting body that emits ultraviolet light by the microwave, and an ultraviolet irradiation treatment of the beverage is performed by the ultraviolet light emitted from the light emitting body. It is.

  In the beverage supply method, the microwave generated by the microwave generating means is irradiated to the light emitter, and the ultraviolet light emitted from the light emitter is irradiated with ultraviolet light, and the beverage is provided outside the beverage supply port. It is preferable to irradiate the microwave and ultraviolet rays emitted from the light emitter.

  ADVANTAGE OF THE INVENTION According to this invention, it becomes possible to provide the drink supply apparatus and drink supply method which can suppress the influence on the taste of a drink and can perform an ultraviolet irradiation process.

It is a schematic structure figure showing an example of a drink supply device concerning an embodiment of the present invention. It is a schematic block diagram which shows an example of the ultraviolet irradiation processing apparatus in the drink supply apparatus which concerns on embodiment of this invention. It is the schematic which shows an example near the front-end | tip part of the cold water supply flow path in the drink supply apparatus which concerns on embodiment of this invention, (a) is a side view, (b) is a top view. It is a schematic block diagram which shows the other example of the ultraviolet irradiation processing apparatus in the drink supply apparatus which concerns on embodiment of this invention.

  Embodiments of the present invention will be described below. This embodiment is an example for carrying out the present invention, and the present invention is not limited to this embodiment.

  The outline of an example of the drink supply apparatus which concerns on embodiment of this invention is shown in FIG. 1, and the structure is demonstrated. As an example of the beverage supply device, a water flow path portion of a cup-type beverage vending machine will be described below as an example, but the beverage supply device according to the present embodiment is not limited to this.

  The beverage supply apparatus 1 includes a cold water supply flow path 36 and an ultraviolet irradiation processing apparatus 22 having a microwave generation apparatus that is a microwave generation means as flow paths for supplying drinking water. The beverage supply device 1 includes a reservoir 10 for storing raw water for drinking water, a cooling tank 12 as a cold water production means for producing cold water by cooling the raw water, an ice making device 14 as an ice making means for making ice from the raw water, An ice supply channel 40 for supplying ice, a carbonated water tank 16 as carbonated water production means for producing carbonated water by mixing carbon dioxide with raw water, a carbonated water supply channel 44 for supplying carbonated water, and raw water A warm water tank 18 and a warm water supply channel 48 for supplying warm water are provided as warm water producing means for producing warm water by heating.

  In the beverage supply apparatus 1 of FIG. 1, the raw water supply flow path 32 is connected to the inlet of the reservoir 10 via the filter 20. The raw water outlet for ice making of the reservoir 10 and the inlet of the ice making device 14 are connected by a raw water flow path 38. An ice supply channel 40 is connected to the outlet of the ice making device 14. The raw water outlet of the reservoir 10 and the inlet of the cooling tank 12 are connected by a raw water flow path 34 via a pump 24. A chilled water supply channel 36 is connected to the outlet of the cooling tank 12 via a valve 26. In the vicinity of the cold water supply port (drinking water supply port) of the cold water supply channel 36, an ultraviolet irradiation processing device 22 is installed. The downstream side of the pump 24 in the raw water passage 34 and the inlet of the carbonated water tank 16 are connected by a raw water passage 42 via a valve 28. A carbonated water supply channel 44 is connected to the outlet of the carbonated water tank 16. The downstream side of the pump 24 in the raw water channel 34 and the inlet of the hot water tank 18 are connected by a raw water channel 46 through a valve 30. A hot water supply channel 48 is connected to the outlet of the hot water tank 18.

  A schematic configuration of an example of the ultraviolet irradiation processing apparatus 22 is shown in FIG.

  A distal end portion including a tube portion 60 and a cold water supply port (nozzle portion) 62 of the cold water supply flow path 36 is inserted into, for example, a rectangular housing 56 of the ultraviolet irradiation processing apparatus 22. A light emitter 58 that emits ultraviolet light by microwaves is installed so as to cover the distal end portion (tube portion 60 and nozzle portion 62) of the cold water supply flow path 36. For example, as shown in FIG. 3 ((a) is a side view, (b) is a top view), the light emitter 58 has a donut-shaped cylindrical shape, and a cold water supply channel is provided in the inner space of the light emitter 58. The tip of 36 is inserted. Thus, at least a part of the tip of the cold water supply flow path 36 and the light emitter 58 is surrounded by the casing 56 of the ultraviolet irradiation processing device 22. Note that the tube portion of the cold water supply channel 36 may be welded to the inlet portion of the inner space of the doughnut-shaped cylindrical light emitter to directly pass water inside the light emitter. In this case, the exit part of the inner space of the light emitter functions as a cold water supply port (nozzle part).

  As shown in FIG. 2, the ultraviolet irradiation processing device 22 has a microwave generating device 50 as a microwave generating means, and the microwave generating device 50 is installed at the tip of the cold water supply channel 36. It is installed so that it can be irradiated with microwaves.

  Operation | movement of the drink supply method and drink supply apparatus 1 which concern on this embodiment is demonstrated.

  As shown in FIG. 1, raw water such as tap water is removed from chlorine and the like by the filter 20, supplied to the reservoir 10 through the raw water supply channel 32, and stored. At least a part of the raw water stored in the reservoir 10 is supplied to the cooling tank 12 through the raw water flow path 34 by the pump 24 with the valve 26 opened and the valves 28 and 30 closed. In the cooling tank 12, the raw water is cooled by a cooling device (not shown) and subjected to ultraviolet irradiation processing by the ultraviolet irradiation processing device 22 through the cold water supply flow path 36 (ultraviolet irradiation processing step), and then as cold water (drinking water). A predetermined amount is supplied from a cold water supply port (drinking water supply port) to a beverage cooking unit (not shown).

  In this way, the microwave generated by the microwave generator 50 is irradiated to the light emitter 58, and the ultraviolet irradiation process of the drinking water is performed by the ultraviolet light emitted from the light emitter 58. In the ultraviolet irradiation treatment, bacteria of cold water are mainly sterilized by ultraviolet rays emitted from the light emitter 58 by microwave irradiation.

  In this way, in the cup-type beverage vending machine in which the reservoir 10 for storing raw water such as tap water is provided and the raw water stored in the reservoir 10 is used as ice making, cold water, carbonated water, and hot water, cold water before the beverage cooking unit is used. In the vicinity of the supply port, a casing 56, which is a reaction vessel that generates microwaves and shields the microwaves, is mounted, and a cylindrical light emitting body 58 that emits ultraviolet rays by microwaves inside the casing 56; A distal end portion (tube portion 60 and nozzle portion 62) of the cold water supply channel 36 for supplying cold water is installed, and a mechanism for sterilizing the cold water by irradiation of ultraviolet rays from the light emitter 58 is provided. Further, the distal end portion (tube portion 60 and nozzle portion 62) of the cold water supply flow path 36 can be sterilized by irradiation with ultraviolet rays from the light emitter 58.

  By the beverage supply method and the beverage supply device according to the present embodiment, the sterilization treatment can be performed while suppressing the influence on the taste of beverages such as drinking water. The tip of the cold water and the cold water supply channel 36 (tube portion 60 and nozzle portion 62) can be sterilized to suppress the growth of bacteria. For example, before using drinking water as cooking or drinking water, it can be sterilized by ultraviolet rays, and a beverage such as safe drinking water can be provided.

  Further, as shown in FIG. 4, the light emitter 58 is installed so as to cover the tube portion 60 at the tip of the cold water supply flow path 36, and the tube portion 60 of the cold water supply flow path 36 that supplies the cold water in the housing 56. A light emitter 58 that emits ultraviolet rays may be installed so that ultraviolet rays and microwaves are emitted to the outside of the nozzle portion 62 while irradiating the nozzle portion 62 with ultraviolet rays. The microwave generated by the microwave generator 50 is irradiated to the illuminator 58, and the ultraviolet ray emitted from the illuminator 58 is used to irradiate the drinking water with ultraviolet light. 62) is irradiated with microwaves and ultraviolet rays emitted from the light emitter 58. By heating the water adhering to the outside of the nozzle part 62 with microwaves while sterilizing with ultraviolet rays, the nozzle part 62 can be quickly dried, and the growth of bacteria can be further suppressed.

  In the example of FIGS. 2 and 4, the light emitter 58 is arranged such that one end of the light emitter 58 on the nozzle portion 62 side enters the housing 56 and the other end opposite to the nozzle portion 62 is exposed outside the housing 56. Although installed, the light emitter 58 may be installed so that the other end opposite to the nozzle portion 62 also enters the housing 56. If the light emitter 58 is installed so that the other end opposite to the nozzle portion 62 is exposed to the outside of the housing 56, there is an advantage that a large amount of ultraviolet rays can be irradiated to the flow path.

  In the beverage supply apparatus 1 of FIG. 1, when carbonated water is supplied, at least a part of the raw water stored in the reservoir 10 is opened by the valve 28 and the valves 26 and 30 are closed by the pump 24. It is supplied to the carbonated water tank 16 through the raw water channels 34 and 42. In the carbonated water tank 16, carbon dioxide gas (carbon dioxide gas) is supplied to raw water from a carbon dioxide gas cylinder or the like (not shown), and a predetermined amount is supplied as carbonated water to the beverage cooking unit (not shown) through the carbonated water supply channel 44. .

  When hot water is supplied, at least a portion of the raw water stored in the reservoir 10 is opened in the valve 30 and closed in the valves 26 and 28, and the hot water tank 18 is passed through the raw water flow paths 34 and 46 by the pump 24. To be supplied. In the hot water tank 18, raw water is heated by a heating device such as a heater (not shown), and a predetermined amount is supplied as warm water to a beverage cooking unit (not shown) through the hot water supply channel 48.

  When supplying ice, at least a part of the raw water stored in the reservoir 10 is supplied to the ice making device 14 through the raw water flow path 38. In the ice making device 14, the raw water is cooled and made into ice by a cooling device (not shown), and a predetermined amount of ice is supplied to the beverage cooking unit (not shown) through the ice supply channel 40.

  In the beverage cooking unit, for example, at least one of ice, cold water, carbonated water and warm water is mixed with a beverage stock solution such as syrup or a seasoning such as sugar in a cup, etc. Various drinks such as syrup drinks are prepared and sold.

  In the example of FIG. 1, the ultraviolet irradiation processing device 22 is provided in the vicinity of the distal end portion including the cold water supply port (drinking water supply port) of the cold water supply flow path 36, and an ultraviolet irradiation process is performed. Thereby, since the sterilization process by ultraviolet irradiation is performed immediately before the cold water (drinking water) supply to a drink cooking part, an effect is higher. The installation position of the ultraviolet irradiation processing device 22 is not limited to the vicinity of the tip including the supply port of the cold water supply flow path 36, and is installed in at least one of the water circulation path and the device to perform the ultraviolet irradiation processing. It's fine. For example, it may be installed in at least one of the reservoir 10, the raw water flow paths 34, 42, 46, and the cold water supply flow path 36 other than the tip, and the ultraviolet irradiation process may be performed. Moreover, it may be installed in at least one of the ice making device 14 and the raw water flow path 38 to perform ultraviolet irradiation treatment. The carbonated water supply channel 44 has a low pH (for example, 4 to 5.5) because carbonated water passes, and the hot water supply channel 48 has been heated (for example, 88 ° C. to 98 ° C.) to pass warm water, Although there is a low possibility that the bacteria will grow, it may be installed in at least one of the carbonated water supply channel 44 and the hot water supply channel 48 to perform the ultraviolet irradiation treatment.

  The raw water to be treated is, for example, tap water, pool water, well water, etc., and there is no particular limitation. The number of bacteria in the raw water to be treated is, for example, 100 / mL or more and 100,000 / mL or less.

  The microwave generator 50 may be any device that can generate microwaves (frequency: for example, 2.450 GHz ± 0.05 GHz, 5.800 GHz ± 0.075 GHz, 24.125 GHz ± 0.125 GHz) The configuration is not particularly limited. For example, in addition to the magnetron method using a vacuum tube, a solid state method using a semiconductor can be used. Magnetron oscillators are widely used in household and commercial microwave ovens and have the advantage of being available at relatively low prices. Solid-state oscillators have a relatively long lifetime and good wavelength stability. There are some advantages.

  As an example of the configuration of the microwave generator 50, for example, as shown in FIG. 2, a configuration including a power supply device 52, a microwave oscillator 54, and a casing 56 that is a waveguide can be cited.

  For example, the microwave generated by the microwave oscillator 54 is irradiated by the power supply supplied from the power supply device 52 through the housing 56 that is a waveguide to the light emitter 58. Impedance matching in the housing 56 that is a waveguide may be adjusted by a sleeving tuner (not shown). The microwave generator 50 may include a short circuit (not shown) on the opposite side of the casing 56 with the light emitter 58 interposed therebetween.

  The microwave irradiation may be performed from one direction where the light emitter 58 is provided, or may be performed from a plurality of directions of two or more directions. When the diameter of the light emitter 58 becomes large (for example, 30 cm or more), the microwave may not reach the center, and therefore it is preferable to irradiate the light emitter 58 from a plurality of directions of two or more directions.

  The light emitter 58 may be anything that emits ultraviolet light (for example, light with a wavelength of 100 nm to 400 nm) by microwaves. In addition to ultraviolet light, visible light (for example, light with a wavelength of 400 nm to 780 nm) or infrared light (for example, with a wavelength of 780 nm to 780 nm). There is no particular limitation due to the presence or absence of 1 mm light). The light emitter 58 is made of, for example, quartz or a fluororesin such as Teflon (registered trademark) resin, which absorbs less ultraviolet rays, and has mercury in a container such as a donut-shaped cylindrical shape or a polygonal cylindrical shape such as a square tube. Electrode-less ultraviolet emitter that contains discharge gas that emits ultraviolet rays by microwave, such as gas, hydrogen gas, xenon gas, nitrogen gas, argon gas, helium gas, chlorine gas, fluorine gas, deuterium gas, etc. Etc. By irradiating the electrodeless ultraviolet light emitter enclosing the discharge gas with microwaves, the gas is excited and emits ultraviolet light. The emission wavelength can be adjusted by appropriately selecting the discharge gas and the sealing pressure.

  In addition, a doughnut-shaped cylindrical or polygonal cylinder-shaped filling container made of a material that transmits microwaves such as quartz glass is installed so as to cover the tip of the cold water supply channel 36, and has a spherical shape or a cylindrical shape. Discharge that emits ultraviolet light by microwaves such as mercury gas, hydrogen gas, xenon gas, nitrogen gas, argon gas, helium gas, chlorine gas, fluorine gas, deuterium gas, etc. An electrodeless ultraviolet light emitting capsule or the like in which gas is sealed at a predetermined sealing pressure may be used as a granular light emitter, and a container filled with a filling container may be used. By irradiating a microwave to an electrodeless ultraviolet light emitting capsule enclosing a discharge gas, the gas is excited and emits ultraviolet light.

  When the light emitter 58 is a donut-shaped cylinder, the outer diameter is, for example, in the range of 6 mm to 25 mm, the inner diameter is, for example, in the range of 4 mm to 15 mm, and the height is, for example, in the range of 0 mm to 100 mm. It is.

  When the light emitter 58 is a granular light emitter and has a spherical shape, the maximum diameter is, for example, in the range of 1.0 mm to 10 mm, and preferably in the range of 2.0 mm to 4.0 mm. When the granular illuminant has a capsule shape in which both ends of the cylinder are spherical, the diameter is, for example, in the range of 1.0 mm to 10 mm, preferably in the range of 2.0 mm to 4.0 mm, and the height is For example, it is the range of 2.0 mm-20 mm, and it is preferable that it is the range of 4.0 mm-8.0 mm.

  The emission wavelength of the light emitter 58 may be appropriately selected according to the type of bacteria contained in the raw water to be treated, and is not particularly limited. In order to mainly perform sterilization treatment of bacteria, usually, a light emitter that generates ultraviolet rays having a wavelength of 254 ± 0.7 nm or 260 ± 0.7 nm is used. When the organic substance is mainly subjected to oxidative decomposition treatment, a light emitter that generates ultraviolet rays having a wavelength of 185 ± 0.1 nm or 220 ± 0.1 nm is usually used.

  As the light emitter 58, two or more kinds of light emitters having different emission wavelengths may be used. The use ratio of two or more types of light emitters having different emission wavelengths is not particularly limited, and may be appropriately changed according to the quality of raw water. Since microwaves are easily absorbed by water, they may give excessive power to the illuminant, resulting in a large energy loss. Using two or more types of illuminants with different emission wavelengths, and changing the filling ratio as appropriate, both the organic matter and bacteria can have a predetermined removal rate or a predetermined treatment liquid concentration. However, it is possible to obtain an appropriate dose, which is also efficient from the viewpoint of power consumption.

  The casing 56 is a polyhedron-shaped container such as a rectangular parallelepiped, and may be any material that shields microwaves, and is not particularly limited. Examples of the material of the housing 56 include metals such as aluminum and copper. As described above, the housing 56 also functions as a microwave waveguide.

  The material to be subjected to the ultraviolet irradiation process (for example, in the example of FIGS. 1 and 2, the tip of the cold water supply channel 36 (the tube portion 60 and the nozzle portion 62)) may be any material that transmits ultraviolet light. There is no particular limitation. For example, quartz glass etc. are mentioned. A front-end | tip part means a part 100 mm or less from front-end | tips of flow paths, such as the cold water supply flow path 36, for example.

  The filter 20 is not particularly limited as long as it can remove chlorine, solids, and the like in the raw water. Examples of the filter 20 include an activated carbon filter and a hollow fiber membrane.

  The reservoir 10 is not particularly limited as long as it can store raw water for drinking water. For example, a level sensor may be installed in the reservoir 10 so that the raw water is automatically supplied when the raw water becomes a predetermined amount or less.

  The cooling tank 12 includes a cooling device as a cooling means for cooling the raw water. The cooling device is not particularly limited as long as the raw water can be cooled, and examples thereof include a cooling device using a refrigerant and a heat exchanger. The temperature of the cold water is, for example, in the range of 2 ° C to 10 ° C.

  The ice making device 14 is not particularly limited as long as it can make ice from raw water. As the ice making device 14, for example, a cell system in which raw water is injected into a cooled ice making chamber (cell) while ice is formed to make ice, or the raw water is frozen in a cooled cylinder, and is stirred up with a screw (auger). Examples include an auger method for making ice. In the example of FIG. 1, raw water is automatically supplied from the reservoir 10 to the ice making device 14 without using a pump, but raw water may be supplied using a pump.

  The hot water tank 18 includes a heating device as a heating means for heating the raw water. The heating device is not particularly limited as long as it can heat the raw water, and examples thereof include a heater, a heat pump, and a heat exchanger. The temperature of warm water is, for example, in the range of 88 ° C to 98 ° C.

  The carbonated water tank 16 includes a carbon dioxide supply means for supplying and mixing carbon dioxide (carbon dioxide gas) to the raw water. For example, carbon dioxide gas is supplied from a carbon dioxide gas cylinder into the carbonated water tank 16 as carbon dioxide gas supply means, and carbon dioxide gas is mixed with raw water.

  The beverage supply method and beverage supply device according to the present embodiment can be suitably applied to sterilization treatment, heat treatment, and the like in a water flow path section of a drinking water supply device such as a cup-type beverage vending machine or a water server.

  By using the beverage supply method and the beverage supply apparatus according to the present embodiment, for example, the quality of a raw solution such as raw water having a number of bacteria of 2,000 / mL or more, for example, drinking water (treated water) having a number of bacteria of 1 / mL or less. ) And the like.

  Beverages to be supplied in the beverage supply method and beverage supply apparatus according to the present embodiment include beverages such as soft drinks, tea, and coffee in addition to drinking water.

  Hereinafter, although an example and a comparative example are given and the present invention is explained more concretely in detail, the present invention is not limited to the following examples.

<Example 1 and Comparative Example 1>
In Example 1, the ultraviolet irradiation processing apparatus shown in FIG. 2 was mounted in the cold water outlet (supply port) of the cup-type beverage vending machine, and a sterilization test was performed. In Comparative Example 1, a sterilization test was performed without mounting an ultraviolet irradiation treatment apparatus. Tap water (general viable count: 0 / mL) was used as raw water.

  The specifications of the ultraviolet irradiation treatment apparatus were as follows.

[Case]
・ Case shape: Width 200mm x Depth 109.22mm x Height 54.61mm Rectangular ・ Case material: Aluminum

[Cool water supply flow path]
Tip: Quartz cylindrical tube with nozzle part φ5mm

[Details of UV emitter (electrodeless UV emitter)]
・ Size: Gas filling part, outer diameter 15mm, inner diameter 5mm x height (L) 10mm, donut-shaped cylindrical type ・ Material: quartz glass ・ filling gas: mercury gas, filling pressure 10Pa
・ Peak wavelength: 254nm

[Microwave generator]
・ Power supply: 300W (30 to 300W variable type) Input power 200W
・ Microwave oscillator: Magnetron ・ Frequency: 2.45 GHz
・ Waveguide: L400mm × W200mm × H300mm, made of aluminum ・ Tuner: Slice tab method

  In Example 1, a casing (reaction vessel) that shields microwaves is installed in the vicinity of a cold water supply port in front of a beverage cooking unit of a cup-type beverage vending machine, and a distal end portion of an outlet of a cold water supply channel is provided therein. By installing an electrodeless ultraviolet light emitter that emits ultraviolet light by a (tube portion and nozzle portion) and microwaves, the tip of the cold water and the cold water supply flow path was sterilized by irradiation of ultraviolet light from the light emitter. A quartz cylindrical tube portion was inserted into the space inside the electrodeless ultraviolet light emitter, and the nozzle portion was exposed as shown in FIG.

  The input power of the power supply device of the microwave generator was set to 30W. Table 1 shows the water quality (general viable count) of the cold water of Example 1 and Comparative Example 1. The number of general viable bacteria was measured by a standard agar medium method (cultured at 36 ± 1 ° C. for 24 ± 2 hours using a standard agar medium (manufactured by Eiken Chemical Co., Ltd., and the number of colonies was measured)).

  The number of general viable bacteria in the cold water obtained from the cold water outlet after operating the cup-type beverage vending machine for one month was 3200 cells / mL in the normal cup-type beverage vending machine of Comparative Example 1. On the other hand, in the method of Example 1, it was confirmed that the number of general viable bacteria was 1 / mL and the sterilization treatment was performed well. Moreover, in the method of Example 1, since hypochlorous acid was not used for sterilization, there was almost no influence on taste.

  Thus, the ultraviolet irradiation process was able to be performed by suppressing the influence on the taste of drinking water by the method of the example.

  DESCRIPTION OF SYMBOLS 1 Beverage supply apparatus, 10 Reservoir, 12 Cooling tank, 14 Ice making apparatus, 16 Carbonated water tank, 18 Hot water tank, 20 Filter, 22 Ultraviolet irradiation processing apparatus, 24 Pump, 26, 28, 30 Valve, 32 Raw water supply flow path, 34, 38, 42, 46 Raw water flow path, 36 Cold water supply flow path, 40 Ice supply flow path, 44 Carbonated water supply flow path, 48 Hot water supply flow path, 50 Microwave generator, 52 Power supply, 54 Microwave oscillator 56 Case, 58 Light emitter, 60 Tube part, 62 Cold water supply port (nozzle part).

Claims (4)

A flow path for supplying beverages;
Microwave generation means;
A phosphor that emits ultraviolet light by microwaves;
With
The beverage supply device, wherein the microwave generated by the microwave generation unit is irradiated to the light emitter, and the ultraviolet irradiation process of the beverage is performed by the ultraviolet light emitted from the light emitter. The beverage supply device according to claim 1,
The microwave generated by the microwave generating means is irradiated to the light emitter, and the beverage is irradiated with ultraviolet light emitted from the light emitter, and the microwave is disposed outside the beverage supply port of the channel. A beverage supply device irradiating a wave and ultraviolet rays emitted from the light emitter.   A beverage supply method, comprising: irradiating a microwave generated by a microwave generation unit to a light emitting body that emits ultraviolet light using a microwave; and performing ultraviolet irradiation treatment of the beverage with the ultraviolet light emitted from the light emitting body. The beverage supply method according to claim 3,
The microwave generated by the microwave generating means is irradiated on the light emitter, and the beverage is irradiated with ultraviolet light emitted from the light emitter, and the microwave and the light emitted outside the beverage supply port. A beverage supply method comprising irradiating ultraviolet rays emitted from a body.

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