JPH03926Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to an improvement of an air pot type electric water heater.

As shown in the drawing, a commonly used electric water heater has a container main body 2 housed within an exterior body 1, and an air pump 4 provided on a lid 3 that can be opened and closed at the top of the exterior body 1. .

A liquid lift pipe 5 and a water level pipe 6 are erected on the front surface of the container body 2. The water level tube 6 is made of a transparent material such as glass, and the water level can be visually observed through a window 7 formed on the front surface of the exterior body 1. Further, the lower ends of the liquid lift pipe 5 and the water level pipe 6 are connected to a pouring pipe 9 attached to the bottom of the container body 2 via a rubber connecting pipe 8, and are communicated with the inside of the container body 2. . Further, the upper ends of the liquid lift pipe 5 and the water level pipe 6 are connected to the spout 12 via connecting pipes 10 and 11, which are also made of rubber.
is connected to.

A band heater 13 is attached to the outer periphery of the lower part of the container body 2, and electrical components for controlling energization to the band heater 13 are housed between the bottom surface of the exterior body 1 and the bottom surface of the container body 2. Particularly in recent years, microcomputers have been used to control the heating state of electric water heaters, and a phenol board 14 on which these electrical components are mounted is housed.

When water is poured into the container body 2 and electricity is applied to the band heater 13, the water in the container body 2 is heated and hot water is boiled. Then, by operating the air pump 4 provided on the lid 3 to supply pressurized air into the container body 2, the hot water in the container body 2 is poured out from the spout 12 through the liquid pumping pipe 5. It's getting old.

BACKGROUND ART However, in this type of electric water heater, it is difficult to securely attach the liquid lift pipe 5 and the water level pipe 6 to the container body 2 due to the dimensional accuracy of each component that makes up the electric water heater. Therefore, it is necessary to connect via flexible rubber connecting pipes 8, 10, 11.

Conventionally, silicone rubber has been used for the connecting tubes 8, 10, and 11 in consideration of food hygiene issues.

Problems to be Solved by the Invention However, as described above, when the phenol substrate 14 on which ICs, semiconductors, etc. are mounted is stored in the lower part of the container body 2, the phenol substrate 14 is damaged by the heat generated from the band heater 13. Odors are generated from the housing and other electrical parts, and the exterior body 1 and container body 2
It fills the space between. The odor then passes through the silicone rubber that constitutes the connecting tube 8 and is absorbed by the water inside. Therefore, the odor is absorbed by the water that remains in the connecting pipe 8, and the hot water that is poured out becomes smelly.

If the band heater 13 is left unused for a long time, especially at night, the power to the band heater 13 will be interrupted in order to maintain the temperature of the hot water, and the temperature of the connecting tube 8 will change, causing the silicone rubber to deteriorate. Adsorption and release of odors are repeated, and the emitted odors are sent into the water one after another, making the water extremely smelly, and the water finally poured out after being left in the water becomes extremely smelly.

The present invention was devised in view of the above circumstances, and an object of the present invention is to prevent water from becoming smelly by using a material with low gas permeability for the connecting pipe 8.

Means for Solving the Problems The present invention has a liquid lifting pipe that extends from the bottom of the container body equipped with a heater to the spout through the outside of the container body, and uses pressurized air introduced into the container body to In the electric water heater that pours out the liquid content through the liquid lifting pipe, the pouring pipe provided at the bottom of the container body and the liquid lifting pipe are connected by a connecting pipe made of flexible fluororubber. It is characterized by:

In the present invention, the connecting tube 8 in the drawings is molded from fluororubber. Fluororubber has extremely low gas permeability, allowing odor-laden air to pass through and transferring the odor to the water, thereby preventing the water from becoming smelly. In addition, fluororubber has high heat resistance, does not contain harmful substances, and poses no problems in terms of food hygiene.
If only gas permeability is considered, butyl rubber has even lower gas permeability, and there are no food hygiene problems, but it has low heat resistance and durability.
Undesirable.

In the present invention, a connecting pipe 10 for connecting the upper ends of the liquid lift pipe 5 and the water level pipe 6 to the spout 12,
It is preferable to use fluororubber for the connecting tubes 10 and 11, but since the connecting tubes 10 and 11 are located far away from the phenol board 14 and other electrical components, odors are less likely to reach them. Since water does not remain inside, the odor that has passed through the connecting pipes 10, 11 is less likely to be absorbed by the water. Therefore, it is not necessary to use expensive fluororubber for these connecting pipes 10 and 11, and it is not necessary to use fluororubber for the connecting pipe 8 at the connection part between the pouring pipe 9 of the container body 2, the liquid lifting pipe 5, and the water level pipe 6. It is sufficient to apply the present invention only to these cases.

In the drawing, an explanation is given of an electric water heater of a type in which a liquid lift pipe 5 and a water level pipe 6 are installed in parallel; however, the electric water heater is not limited to this type. There are also known types of electric water heaters, such as those in which the water level pipe 6 itself also serves as a liquid lifting pipe, and electric water heaters in which a spout pipe 9 is provided on the side of the container body 2. It can be applied in the same way.

[Brief explanation of drawings]

FIG. 1 is a side view showing the main parts of the electric water heater of the present invention in a central vertical cross-sectional view, and FIG. 2 is a front view showing the arrangement of the liquid pumping pipe and the connecting pipe with respect to the container body. 2... Container body, 5... Lifting pipe, 8... Connection pipe, 9... Output pipe, 12... Outlet, 13... Band heater, 14... Phenol substrate.

Claims (1)

[Scope of utility model registration request] It has a liquid lift pipe 5 that extends from the bottom of the container body 2 equipped with a heater 13 to the spout 12 through the outside of the container body 2, and the contents are pumped through the liquid lift pipe 5 by pressurized air sent into the container body 2. An electric water heater for dispensing liquid, characterized in that a dispensing pipe 9 provided at the bottom of the container body 2 and the liquid lifting pipe 5 are connected by a connecting pipe 8 made of flexible fluororubber. An electric water heater.