JPH0330093A - Cartridge tank type water supply device for dispenser - Google Patents

Abstract

PURPOSE:To suppress the increase of bacteria by connecting a cartridge tank to the suction side of a pump provided in a dispenser and connecting a water supply pipe to the exit side of the pump through a bacterium filtering filter and a cross valve. CONSTITUTION:When a pump 6, a cross valve 8, and a cold water valve 16 are energized by a selling command at the time of requiring cold water, water in a cartridge tank 21 passes a bacterium filtering filter 23 and is charged out to a cup from a nozzle 17. When the water level in a hot water tank 10 is reduced because of discharge of hot water to operate a level switch 10b, water in the tank 21 is supplied to the tank 10 through the filter 23, the cross valve 8, and a hot water tank supply valve 29. When the water level in a cistern 2 is reduced because of water supply to a freezer 19, water is supplied to the cistern 2 through the filter 23 and the cross valve 8. Thus, the increase of bacteria is suppressed.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a cartridge tank type water supply device used in a cup vending machine.

Conventional technology In recent years, with the spread of cup vending machines, a wide variety of beverages have come to be provided, but when installing and operating a cup vending machine, a water source is required in addition to a power source. Therefore, there were cases where the installation had to be abandoned due to the presence or absence of a water source at the location where it was installed.

In order to solve this problem, a water supply device has been proposed in which a water tank called a cartridge tank is prepared separately and the water is fed to the cup vending machine using a pump. It is used.

Such a water supply device is, for example, disclosed in Japanese Utility Model Publication No. 59-28774.
A conventional cartridge tank type water supply device will be described below with reference to the drawings.

FIG. 2 shows a conventional cartridge tank type water supply device. 1 is the main body of the cup vending machine. 2 is a cistern that is supplied with water via a water supply valve 4 like a water supply port 3;
A float switch 2a is provided to detect the internal water level. 6 is a water supply pipe connected from the cistern 2 to the suction port 6a of the first pump 6; 7 is the water supply pipe connected to the pump 6;
The normally open port 8b of the three-way valve 8 is connected to the hot water tank 10 by the water supply pipe 9, and is supplied with water.

This hot water tank 10 has an electric heater 10a provided inside.
Hot water at a constant temperature is stored in the tank. The water level inside the casing is detected by the level switch 10b. 11
is a hot water supply valve which operates upon receiving a sales signal and sends hot water in the hot water tank 10 through a hot water nozzle/L/12 to a stirring device (not shown).

1. The normally closed valve of the three-way valve 8}8c is the cold water coil lV1
The cold water carp A/13 is connected to one end of the cooling water carp A/13 and is filled with a cooling liquid 14a that is constantly cooled by a refrigerator 16 forming a refrigeration cycle in a cooling prine tank 14. ing. This cold water coil 13
The other end is connected to a cold water nozzle 17 via a cold water valve 16, and receives a sales command and discharges cold water.

Furthermore, the cistern 2 is connected to an ice maker 19 by an ice maker water supply pipe 18.

A cartridge tank type water supply device 20 is connected to the water supply port 3 of the cup vending machine body 1 constructed as described above. This cartridge tank type water supply device 20 is separated from the main parts of a cartridge tank 21, a second pump 22, and a bacteria filtration filter 23, and the second pump 22 is connected to a removable joint 21a connected to the cartridge tank 21. The suction port 22a of the main body 1 is connected to the inlet port 22a, the discharge port 22b is connected to the inlet side 23a of the bacteria filter 23, and the outlet side 23b is connected to the water supply port 3 of the main body 1, respectively.

Here, the above-mentioned three-way valve 8 will be explained in detail.
As is well known, it is a solenoid valve that has three fluid connection ports, with a common fluid inlet and outlet as a common port, a port that is in an open circuit state with the common port when no electricity is applied, and a normally open port, and a closed circuit state with the common port. The ports were respectively referred to as normally closed ports. Therefore, when energized, the open and closed circuits described above are reversed, with the common port and normally open port becoming closed, and the common port and normally closed port becoming open.

The operation of the conventional example configured as above will be explained. First, the removable joint 21a is connected to the cartridge tank 21 filled with water to complete preparations for sale. When selling beverages that require hot water, the hot water valve 11 is energized by the sales command, and hot water is supplied to the hot water nozzle/L/12.
It is then discharged.

As a result of this operation, when the hot water level in the hot water tank 1o decreases, it is detected by the level switch 10b, and energization of the pump 6 is started. When the pump 6 is operated, water in the cistern 2 is supplied in the order of the pump 6 → three-way valve 8 → hot water tank 10, and when the water level in the hot water tank 10 returns to the original water level, the level switch 10b, the pump e is de-energized and the water supply is stopped. ″!．
In addition, when cold water is required, the sales command starts energizing the pump 8 and the three-way valve 8, and the route from the three-way valve 8 is the same, and then from the cold water coil 13 to the cold water valve. 16
→The cold water is discharged in the order of the cold water nozzle 17.

Due to this operation, the water level in Cistern 2 decreases,
Detected by the float switch 2a, the water supply valve 4 and the second pump 22 are energized to fill the cartridge tank 21.
When the water level in the cistern 2 returns to the original water level by supplying water in the order of the second pump → bacterial filtration filter 23 → water supply port 3 → water supply valve 4, the float switch 2
By step a, the second pump 22 is de-energized and the water supply is stopped. Incidentally, the water in the cistern 2 is also consumed by the operation of the ice maker 19, but in this case as well,
When the water level decreases, water in the cartridge tank 21 is supplied to the cistern 2 by the second pump 22.

Problems to be Solved by the Invention However, in the above structure, the hot water tank 10,
Or, in order to supply water to the cold water coil 13, the water received from the cartridge tank type water supply device 2o is stored in the cistern 2. (1) If no sales operation is performed for a long time, the water in the cistern 2 is Bacteria can easily multiply due to contact with outside air.

(2) First pump 6 and cartridge type water supply device 20
Since two pumps, such as the second pump 22 installed in the pump, are operated, electricity consumption is large, and if two pumps are operated at the same time, there is a risk of exceeding the allowable current of the commercial power supply.

It had the above-mentioned issues.

In view of the above problems, the present invention does not require a second pump,
By supplying water in the cartridge tank directly to the hot water tank or cold water coil using only the first pump installed in the conventional cup vending machine, the water is once stored in the cistern as in the conventional cup vending machine. This makes it possible to suppress bacterial growth in water.

Means for Solving the Problems In order to solve the above problems, the cartridge tank type water supply device of the present invention connects a cartridge tank to the suction side of a pump installed in a conventional cup vending machine, and connects the cartridge tank to the discharge side of the pump. After passing through a bacteria filter, a three-way valve and a hot water tank water supply valve are connected.

Function: According to the above-described structure, the present invention connects a cartridge tank to the suction side of the pump, and a three-way valve and a hot water tank water supply valve to the discharge side via a bacteria filtration filter, respectively, and connects the cold water coil N and the cistern. Water is supplied to the hot water tank through a 3-way valve, and water is supplied to the hot water tank through a 3-way valve and a hot water tank water supply valve, and the three ways of water supply are switched by electrical control of the 3-way valve and the hot water tank water supply valve. Water is supplied directly from the cartridge tank.

Embodiment Hereinafter, one embodiment of the present invention will be described based on the accompanying drawings. Note that the same configurations and operations as in the prior art are given the same numbers and detailed explanation thereof will be omitted.

FIG. 1 shows an embodiment of the present invention, in which a suction port 6a of a pump 6 and a cartridge tank 21 are connected by a water supply pipe 24. As shown in FIG. And the discharge port 6 of the pump e
b and the inlet 23a of the bacteria filtration filter 23 are connected by a water supply pipe 26, and the bacteria filtration filter 23
The outlet 23b of the three-way valve 8 and the common port 8a of the three-way valve 8 are connected by a water supply pipe 26. A water supply pipe 27 is connected to the normally open port 8b of the three-way valve 8 and supplies water to the cistern 2.

28 is a water supply pipe connecting the normally closed port 8c of the three-way valve 8 and the inlet port 29a of the hot water tank water supply valve 29;
The normally closed port 8c side is branched and connected to the cold water carp) v13.

30 is the outlet port 29b of the water supply valve 29 for the hot water tank.
This is a water supply pipe that connects the hot water tank 1o to the hot water tank 1o.

The operation of the embodiment constructed as described above will be explained below based on the same figure.

First, the preparation for sale is completed by connecting the removable joint 21.a to the cartridge tank 21 filled with water.

Next, the operation when selling drinks will be explained. First, when cold water is required, when the pump 6, 3-way valve 8, and cold water valve 16 are energized according to the sales directive, the water in the cartridge tank 21 is transferred from the water supply pipe 24 to the pump 6 to the Pongee bacteria filtration filter. 23→Common port of 3-way valve 8}8a→Normally closed port 8c of 3-way valve 8→Cold water coil 13→Cold water [16→
It is poured into a cup (not shown) through the path of the nozzle 17. Next, by discharging hot water, the water level in the hot water tank 1o is lowered, and when the level switch 1ob is operated, the pump 6, the three-way valve 8, and the hot water tank water supply valve 29 are energized, and the water level in the cartridge tank 21 is energized. Water supply pipe 24 → Pump 6 → Bacteria filter 23 → 3-way valve 8
Water is supplied through the common port}8a→normally closed port of the three-way valve 8}8c→water supply pipe 28→hot water tank water supply valve 29→water supply pipe 30−+hot water tank 1o, and the water level in the hot water tank 10 is the original When the water level reaches , it is detected by the level switch 1ob and the water supply is stopped.

In addition, if the water in the cistern 2 is consumed by water supply to the ice maker 19 and the water level decreases, the float switch 2a equipped with
Upon detection of this, the water in the cartridge cartridge tank 21 is supplied through the water supply pipe 27 connected to the normally open port 8b of the three-way valve 8 by controlling the power supply to the pump 6.

In addition, when the water level in the cistern 2 drops during the beverage sale, the float switch 2a operates and switches to the water supply to the cistern 2, which may cause the beverage discharge to be interrupted midway or the water level in the cistern 2 to drop.
In order not to switch to the vending operation in the middle of water supply to the cistern 2, even if the float switch 2a is operated during beverage sales, the beverage vending operation will continue for the necessary time; By energizing the water supply valve and pump so that they are not operated until the float switch 2a returns to the original predetermined position, the water in the cartridge tank is not stored in the cistern, and cold water is supplied from the bomb. Water can be supplied directly to the coil or hot water tank.

Effects of the Invention As described above, the present invention provides a cartridge tank type water supply device in a cup vending machine, and controls the supply of electricity to the pump, the hot water tank water supply valve, and the three-way valve, thereby allowing the water in the cartridge tank to meet the outside air. By preventing contact with other people, it prevents the proliferation of bacteria.

Furthermore, the pump operates less frequently than conventional systems, reducing electricity consumption.

In addition to the effect of solving the above-mentioned problems as described above, since it is only necessary to connect the cartridge tanta to the vending machine, it is compact and requires extremely little installation space. There are effects such as

[Brief explanation of drawings]

FIG. 1 is a schematic diagram of the fluid piping structure of a cartridge type water supply device and a cup vending machine showing an embodiment of the present invention, and FIG. 2 is a diagram of the same structure of a conventional device. 2... Cistern, 6... Pump, 8
...3-way valve, 1o...Hot water tank, 1
3... Cold water coil, 21... Cartridge tank, 23... Bacteria filtration filter, 2
7... Water supply piping, 28... Water supply piping,
29... Water supply valve for hot water tank, 30...
・Water supply piping.

Claims (1)

[Claims] A cartridge tank that can easily store water, a pump that pumps the water in the cartridge tank, a bacteria filtration filter that is connected to the discharge side of the pump via piping, and an outlet side to the bacteria filtration filter and a cold water coil. A three-way valve inserted in the middle of the piping, a normally closed port of this three-way valve, a water supply valve for the hot water tank inserted in the middle of the hot water tank piping, and a water supply connecting the normally open port of the three-way valve and the cistern. A cartridge tank type water supply device for cup vending machines consisting of piping.