JPS636080Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION OBJECTIVES OF THE INVENTION (INDUSTRIAL APPLICATION) The present invention relates to a tank arrangement in a beverage dispensing machine, for example for dispensing tea and cold water.

(Prior Art) Conventionally, a tank device in a beverage dispensing machine that supplies cold water and beverages using hot water, such as tea, has a tank device connected to the bottom of a reserve tank 1 via communication pipes 2 and 3, as shown in FIG. The bottoms of a hot water tank 4 and a cold water tank 5 as distribution tanks are connected, and a supply valve 6 such as a solenoid valve is connected to the hot water tank 4 and the cold water tank 5.
A water supply pipe 9 having a solenoid valve 8 for water supply is provided at the top of the reserve tank 1, and a liquid level detection device 10 for controlling the solenoid valve 8 is provided at the top of the reserve tank 1. This liquid level detection device 10 is provided with a float 13 on a container frame 11 via a lever 12 that moves up and down according to the water level in the reserve tank 1, and a float 13 on the container frame 11 that is turned on and off by the lever 12. A micro switch 14 is provided to open and close the electromagnetic valve 8.

Then, water is supplied from the water supply pipe 9 to the reserve tank 1, and this water is distributed and supplied to the hot water tank 4 and the cold water tank 5 via the communication pipes 2 and 3,
When the water level of the reserve tank 1 reaches a predetermined level, the switch 14 is actuated via the float 13 and lever 12 of the liquid level detection device 10 to close the solenoid valve 8 and stop water supply. At this time, the communication pipes 2 and 3 are of the U-shaped type, and the water levels 1a, 4a, and 5a of the reserve tank 1, hot water tank 4, and cold water tank 5 are at the same water level. In this state, the water in the hot water tank 4 is heated by a heating device (not shown), and the water in the cold water tank 5 is cooled by a cooling device (not shown) as needed.

In such a state, supply valve 6 or supply valve 7
When you open it and take out hot water from the hot water tank 4 or cold water from the cold water tank 5, the water level 4a or the water level 5a
falls, and the water level 1a of the reserve tank 1 also falls,
As the float 13 descends, the switch 14 is reversely operated via the lever 12, opening the solenoid valve 8 and supplying water.

(Problem to be solved by the invention) As mentioned above, there is no problem when water is constantly supplied from the water supply pipe 9, but when the water supply source is cut off or the water pressure is low, the water supply may be temporarily interrupted. If this is not done, when water is sampled from the cold water tank 5, the water level 1a of the reserve tank 1 will drop together with the water level 5a of the cold water tank 5, and only the water level 4a of the hot water tank 4 will rise, so that the hot water in the hot water tank 4 will increase. The water may flow back into the reserve tank 1 and the water in the reserve tank 1 may turn into hot water.

When the water in the reserve tank 1 turns into hot water, the switch 14 is likely to deteriorate due to steam, and the switch 14 needs to be insulated and moisture-resistant, and the reserve tank 1 and the float 13 also need to be heat resistant. Furthermore, when hot water enters the cold water tank 5 from the reserve tank 1, the cooling efficiency of the cooling device also deteriorates.

This invention attempts to solve the above-mentioned problems by supplying water from a reserve tank to multiple distribution tanks for hot water or cold water, and preventing backflow from each distribution tank to the reserve tank. The purpose is to

[Structure of the idea]

(Means for Solving the Problem) The present invention connects the bottoms of a plurality of distribution tanks to the bottom of the reserve tank via communication pipes, and has a water supply system with a solenoid valve for water supply at the top of the reserve tank. A pipe is provided at the top of the reserve tank, and a float that rises and falls according to the water level in the reserve tank, and a float that turns on and off according to the rise and fall of this float.
In a tank device equipped with a liquid level detection device having a switch that opens and closes the solenoid valve when turned off, a plurality of partitions are formed by providing a partition plate at a predetermined height from the bottom wall in the reserve tank, A communication pipe to each of the distribution tanks is connected to the bottom of each compartment, and a float for the liquid level detection device is installed above the partition plate, and a float for the liquid level detection device is installed at the bottom of the float. A buoyancy section is formed that faces into the compartment, and the float is formed so that each buoyancy section is in a predetermined floating state with each buoyancy section in contact with the water surface at the same water level, and the float Activate the switch to close the solenoid valve when the water level in the compartment is approximately equal to the top surface of the partition plate, and operate the switch when the water level in any of the compartments is below the top surface of the partition plate. The solenoid valve is set to open by reversing the operation.

(Function) In this invention, when liquid is taken out from one of the distribution tanks, the water level drops, the water level in the corresponding compartment in the reserve tank drops, and the buoyancy of one of the buoyant parts of the float decreases. The float then lowers and a switch is activated to open the solenoid valve and water is supplied. When the water level in each compartment of the reserve tank reaches a predetermined water level that almost matches the upper end surface of the partition plate, the float enters a predetermined floating state and the switch is operated in reverse to close the solenoid valve and stop water supply.

At this time, each distribution tank and each compartment in the reserve tank are made independent from each other to prevent backflow.

(Example) An example of the present invention will be described below with reference to FIG.

Note that parts corresponding to those in FIG. 1 are given the same reference numerals, and detailed explanations will be omitted.

A partition plate 15 at a predetermined height from the bottom wall is provided in the center of the reserve tank 1 to form compartments A and B on both sides, and a communication pipe 2 to the hot water tank 4 is connected to the bottom of each compartment A and B. and the communication pipe 3 to the cold water tank 5 are connected respectively. Further, a float 13 of the liquid level detection device 10 is arranged above the partition plate 15,
Buoyant parts 17 and 18 are formed in the lower part of the float 13 and are exposed to the compartments A and B of the reserve tank 1 through the central recess 16.

The float 13 is connected to both buoyant parts 1
7 and 18 are formed so that they are in a predetermined floating state when they are in contact with the water surface at the same water level, and all the compartments A, 18 of the reserve tank 1 are
The switch 14 is operated to close the solenoid valve 8 when the water level in B almost matches the upper end surface of the partition plate 15, and the water level in either compartment A or B is above the top of the partition plate 15. The solenoid valve 8 is set to be opened by inverting the switch 14 in a state below the end face.

When the supply valve 6 or the supply valve 7 is opened to take out hot water from the hot water tank 4 or cold water from the cold water tank 5, the water level 4a or the water level 5a drops, and accordingly, the compartments A, One of the water level surfaces 1a of B is lowered, and the buoyant part 1 of the float 13
The buoyancy of one of 7 and 18 becomes smaller, and float 1
3 descends. As a result, the switch 14 is actuated via the lever 12, the solenoid valve 8 is opened, and water is supplied. At this time, in the illustrated embodiment, water is supplied to compartment B on the side of cold water tank 5 in reserve tank 1, but when the water level of cold water tank 5 and compartment B becomes higher than the upper end surface of partition plate 15, water is supplied to compartment B on the side of cold water tank 5. The hot water is also guided beyond the plate 15 to the compartment A in the hot water tank 4. Next, when the water level in each compartment A, B of the reserve tank 1 reaches a predetermined water level that almost coincides with the upper end surface of the partition plate 15, the float 13 enters a predetermined floating state, and the switch 14 is reversely operated to open the solenoid valve 8. Close and stop water supply.

In this way, since the hot water tank 4 and the cold water tank 5 are divided together with the reserve tank 1,
Hot water and cold water in the hot water tank 4 and the cold water tank 5 do not flow back into the reserve tank 1.

In addition, in carrying out the operation, a plurality of partition plates 15 are provided in the reserve tank 1 to divide the inside of the reserve tank 1 into three or more compartments, and a distribution tank is connected to each of the compartments. If the buoyant part is divided into three or more parts and each section is made to face the interior of each compartment, it can be used to distribute water to three or more distribution tanks.

Moreover, by arranging the water supply port of the water supply pipe 9 at the upper center of the partition plate 15, water can be replenished quickly.

[Effect of idea]

According to the present invention, it is possible to supply water from a reserve tank to a plurality of distribution tanks for hot water or cold water, and to prevent backflow from each distribution tank to the reserve tank. Because there is no backflow of hot water, there is less need to consider heat resistance, moisture resistance against steam, etc. for reserve tanks, liquid level detection devices including floats, etc.
It can be formed at low cost.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram of the configuration of a conventional device, and FIG. 2 is an explanatory diagram of the configuration of an embodiment of the device of the present invention. 1... Reserve tank, 2, 3... Communication pipe, 4
... Hot water tank as a distribution tank, 5 ... Cold water tank as a distribution tank, 8 ... Solenoid valve, 9 ...
Water supply pipe, 10...Liquid level detection device, 13...Float, 14...Switch, 15...Partition plate, 17,
18...Buoyant part, A, B...Divided part.

Claims (1)

[Utility Model Claims] A tank system comprising a reserve tank having a bottom connected to the bottom of a plurality of distribution tanks via communicating pipes, a water supply pipe having a solenoid valve for supplying water provided at the top of the reserve tank, and a liquid level detection device provided at the top of the reserve tank having a float which rises and falls according to the water level in the reserve tank and a switch which is turned on and off according to the rise and fall of the float to open and close the solenoid valve, wherein a partition plate is provided in the reserve tank at a predetermined height from the bottom wall to form a plurality of partitions, a communicating pipe to each of the distribution tanks is connected to the bottom of each partition, a float of the liquid level detection device is provided above the partition plate, and a buoyant portion is formed at the bottom of the float facing into each of the partitions of the reserve tank, The float is formed so that it is in a predetermined floating state when each buoyancy part is in contact with the water surface of the same water level, and the switch is operated to close the solenoid valve when the water levels in all the compartments of the reserve tank are approximately equal to the upper end surface of the partition plate, and the switch is operated in the reverse direction to open the solenoid valve when the water level in any of the compartments is below the upper end surface of the partition plate.