JPH0128025Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] This invention relates to a closed water tank that is removably attached to a beverage vending machine and used as a water source.

[Conventional technology]

Conventionally, this type of water tank is equipped with an air hole at the top, and when supplying water, the water tank is kept at atmospheric pressure so that the water is smoothly sent out from the water outlet. It is being

However, with the above water tank, when the water tank is filled with water and transported to a beverage vending machine and installed inside the machine, the water in the water tank shakes and blows out from the air hole.

In order to solve this problem, it is possible to provide a valve that normally closes the air hole and opens the air hole depending on the pressure difference between the inside and outside of the tank body when water stored in the tank body is supplied. The structure of such a valve is disclosed, for example, in Japanese Utility Model Application No. 49-79810.

[The problem that the idea attempts to solve]

By the way, the valve disclosed in the above-mentioned Japanese Utility Model Publication No. 49-79810 is composed of members such as a valve casing, a valve seat, a valve body, and a spring, and has a complicated structure with a large number of parts, so it is difficult to assemble. However, this method is not only complicated but also expensive.

Therefore, this idea was created by creating a simple valve that closes the air hole so that water can be sent out smoothly when water is supplied, and that water will not blow out from the air hole when it is filled with water and transported or installed. It is an object of the present invention to provide a sealed water tank having a small number of parts and a low cost by configuring it in a shape.

[Means to solve the problem]

In order to achieve the above object, this invention includes an air hole at the top of the tank body which has a water outlet at the bottom and serves as a sealed container, and the air hole is normally closed to supply water stored in the tank body. Sometimes, in a closed water tank equipped with a valve that opens the air hole due to a pressure difference between the inside and outside of the tank body, the valve is fixed around the air hole inside the tank body, and the support This valve is composed of a sheet-like valve that is integrally connected to the body via a flexible connection part and includes a valve body that closes the air hole from the inside.

[Effect]

According to this invention based on said means, the valve 16 is
The valve body 16a is configured as a sheet-like valve consisting of a valve body 16a which is integrally connected to a support body 16b via a flexible connection part 16c, so that the valve body 16a may be caused by the air hole 15 due to water shaking due to transportation of a water tank or the like. This prevents water from gushing out. On the other hand, when the water is discharged after the water tank is attached, the pressure inside the tank becomes negative, and the connection part 16c bends and curves due to the atmospheric pressure, and the valve body 16a opens the air hole 15, so that the inside of the tank becomes negative. Air flows in and water is smoothly supplied. Moreover, in the sealed water tank of this invention, the valve 16 can be formed by cutting out a sheet of plastic, for example, and therefore the number of parts is small, and assembly is simple by simply fixing the support body 16b around the air hole 15. It can be manufactured at extremely low cost.

〔Example〕

Embodiments of this invention are shown in FIGS. 1 to 4. Reference numeral 1 denotes a water tank, and the water tank 1 is removably installed in a beverage vending machine by connecting its water outlet to a water supply pipe 4 equipped with a valve 3 through a self-sealing coupling 2, and is connected to a hot water tank (not shown) or a water supply pipe 4 with a valve 3. Supply water to the reservoir. The self-seal coupling ring 2 is attached to a water outlet 12 provided at the bottom of the tank body 11 of the water tank 1, and is connected to the water supply pipe 4.
When connecting to the water tank 1, open the water outlet 12 and
is taken out from the water supply pipe 4 and the water outlet 1
2 is sealed. Reference numeral 13 denotes a water inlet of the water tank 1, which is provided at the upper part of the tank body 11 and includes a lid 14. A small diameter air hole 15 is bored in the lid 14. Reference numeral 16 denotes a valve, which is made by cutting out a sheet of plastic, for example, and has a disc-shaped valve body 1 in the center.
6a, and a donut-shaped support 1 on the outside thereof.
6b is formed, and the valve body 16a and the support body 16b are connected by a flexible connecting portion 16c. The valve 16 is attached to the inside of the lid 14 by pasting a support 16b around the air hole 15 and to the inner surface of the lid 14.

In the above-mentioned configuration, when the water tank 1, which has been removed from the vending machine and filled with water, is transported and installed into the machine, the valve 16 is connected to the valve body 16a.
contacts the inner surface of the lid 14 and closes the air hole 15. And the water shaking due to the transportation etc. is removed from the valve body 16a.
acts to press against the inner surface. In this way, the air hole 15 is sealed by the valve body 16a, and water is prevented from blowing out from the air hole 15. When the water tank 1 is installed inside the machine and water is supplied, water is discharged from the water outlet 12 and the tank body 1
As the pressure inside the valve 1 becomes slightly negative, the valve element 16a, which receives atmospheric pressure through the air hole 15, is pushed inward. As a result, the valve 16 is bent at the connecting portion 16c, as shown by the chain line, and the valve body 16a is bent over the lid 14.
The air hole 15 is opened away from the inside of the. Therefore, air flows into the tank body 11 from the air holes 15 as water is sent out, and water is smoothly supplied.

[Effect of idea]

According to the sealed water tank of this invention, the valve of the air hole is integrated with the support body fixed around the air hole inside the tank body and the support body through a flexible connection part. Since it is constructed of a sheet-like valve consisting of a valve body that is connected to the air hole and closes the air hole from the inside, the valve can be formed by, for example, cutting out a sheet of plastic. It can be manufactured at an extremely low cost by simply assembling it by simply fixing it around it.

[Brief explanation of the drawing]

FIG. 1 is a front view of the water tank of this invention, FIG. 2 is an enlarged sectional view of the main parts of the invention, and FIGS. 3 and 4 are a front view and a sectional view of the valve, respectively. 1... Water tank, 11... Tank body, 12...
...Water outlet, 15...Air hole, 16...Valve, 16a
... Valve body, 16b ... Support body, 16c ... Connection part.

Claims (1)

[Scope of utility model registration request] The tank body is equipped with an air hole at the top of the tank body, which has a water outlet at the bottom and serves as a sealed container.The air hole is normally closed, and when the water stored in the tank body is supplied, the air is removed due to the pressure difference between the inside and outside of the tank body. In a closed water tank equipped with a valve that opens a hole, the valve is connected to a support body fixed around the air hole inside the tank body, and a flexible connection part to the support body. 1. A closed type water tank comprising a sheet-shaped valve, which is integrally connected with a valve body that closes the air hole from the inside.