JPS62200496A - Cup type beverage vending machine - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of the Invention] The present invention relates to a water reservoir provided in a water supply circuit of a cup-type beverage vending machine, and particularly to a water reservoir capable of suppressing the growth of bacteria in supplied water.

[Prior art and its problems]

FIG. 3 shows an outline of the drinking water supply circuit of this type of cup-type beverage vending machine. 1 is a water supply valve that controls the supply of water from the tap to the circuit.

Water passing through the water supply valve is led to the filter 2. There are two types of filter 2: one that simply removes foreign matter, and one that contains activated carbon that removes chlorine contained in tap water in order to improve the taste of beverages in addition to foreign matter. In particular, water that has passed through a filter containing activated carbon is free of sterilizing chlorine, making it susceptible to the growth of bacteria.

The water that has passed through the filter 2 is transferred to a hot water tank 14 by a distribution valve 3.
It is divided into two parts: one that goes to water reservoir 4, and one that goes to water reservoir 4.

After the water led to the water reservoir 4 is temporarily stored, part of the water goes to the ice maker A6 and becomes ice, and the rest passes through the three-way valve 5, and then is divided into the cold water coil 6 and carbonator 11, and sent to the tip 8 where cold water and carbonic acid are produced. It is poured out as water. cold water coil 6
The carbonator 11 is located in the cooling water tank 7 and is designed to cool the water to an appropriate temperature and effectively dissolve carbon dioxide gas in the water to produce carbonated water. Therefore, in addition to water from the water reservoir 4, the carbonator 11 is supplied with carbon dioxide gas from the carbon dioxide gas cylinder 10. Further, the carbon dioxide gas in the carbon dioxide gas cylinder 10 is also supplied to the syrup container 12, and the concentrated syrup stored in the syrup container 12 is force-fed to the flop 8 via the syrup coil 13 by the pressure of the carbon dioxide gas.

The water that has passed through the filter 2 may not only have sterilizing chlorine removed, but also only foreign substances have been removed.
The capacity is 1! Moreover, since the capacity of the water reservoir is a little less than 1 liter, it is inevitable that this water will stagnate to some extent, making it easy for bacteria to grow. Furthermore, since the water reservoir 4 is arranged at the source of the drinking water supply circuit as shown in the figure, there is a problem in that contamination within the water reservoir 4 affects the entire water supply circuit.

[Purpose of the invention]

In view of the above-mentioned problems, this invention has been developed to sterilize or sterilize water without impairing its original function as a water reservoir, without contamination with bacteria, and even if the water that has passed through the filter is slightly contaminated with bacteria. The purpose of this invention is to provide a cup-type beverage vending machine.

[Key points of the invention]

This invention achieves the above object by temporarily storing water supplied from the tap in a water reservoir inside the aircraft, and from the water reservoir supplying water through a drinking water supply line to an ice maker for water, a carbonator for carbonated water, and a cup for diluting syrup. This is achieved by a cup-type beverage vending machine characterized in that the water in the water reservoir is heated and stored.

The water in the water reservoir is heated not at room temperature, but within a range that does not affect drinking, and to an extent that inhibits the growth of germs or further sterilizes the water.

[Embodiments of the invention]

The present invention will be described in detail below with reference to drawings showing embodiments of the invention.

FIG. 1 is a diagram showing the main part of the present invention, and in the figure, 17 indicates stored water, and when this water is discharged in fixed quantities in response to a sales signal and a certain amount is discharged from the water reservoir 4, the float 18 detects the water level and inlet 19
Tap water is injected from the tank. In order to heat this stored water 17, a heater 15 is wound around the outer wall of the water reservoir 4, and an injection heater 16 is connected to the outer wall of the water reservoir 4.
It is located inside. Note that either one of these heaters 15 and 16 may be used.

When viewed from the perspective of the entire drinking water supply circuit, it is better to keep the water in the water reservoir 4 as low as possible without heating it, as can be seen from the fact that the supplied water is cooled by a cold water coil. From this point of view, it is desirable that heating to suppress the growth of germs be performed at as low a temperature as possible. It is said that ordinary germs and the like, apart from special ones, will die in about 10 minutes at a temperature of 70'C. If the temperature is raised further, the sterilization effect will be reduced as the temperature is lowered. The relationship is shown in FIG. Of course, there are bacteria that are sensitive to temperature, such as E. coli, and bacteria that are resistant to extremely high temperatures, so it is hard to say for certain, but the amount of time that water stays in the water reservoir and bacteria multiplies is minimal. It may take several hours, and depending on the case, the water may remain for a day or two. It is sufficient to further sterilize the product within this time without causing the growth of germs, and the heating temperature required for sterilization is considered to be sufficient at 70°C. On the other hand, since it rapidly proliferates at 30 to 40°C, the lower limit temperature should be considered to be 50°C.

〔Effect of the invention〕

According to this invention, in a cup-type beverage vending machine, the water stored in the water reservoir, where bacteria are likely to grow, is heated, so the growth of bacteria in the water reservoir can be suppressed, and the water reservoir can be heated. This eliminates the need to supply water contaminated with bacteria to the downstream drinking water circuit, improving the hygiene of the cup-type beverage vending machine.

[Brief Description of the Drawings] Fig. 1 is a cross-sectional view of main parts showing an embodiment of the present invention, Fig. 2 is an explanatory drawing showing the relationship between the survival time of germs and temperature, and Fig. 3 is an illustration to which this invention is applied. 1 shows a drinking water supply circuit diagram of a cup-type beverage vending machine.

Claims (1)

[Claims] 1) Water supplied from the tap is temporarily stored in a water reservoir onboard the aircraft.
In a cup-type beverage vending machine that supplies water from the water reservoir to an ice maker for ice, a carbonator for carbonated water, and a cup for diluting syrup through a drinking water supply circuit, the water in the water reservoir is heated and stored. A cup-type beverage vending machine characterized by: