JPH073121Y2 - Electric boiler - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to an electric boiler used for supplying steam obtained by heating canned water to equipment such as ironing and cooking.

[Prior Art] Conventionally, an electric boiler has a heating pipe 3 provided with an electric heater 1 such as a sheath heater, as shown in FIG.

The electric heater 1 whose one end is fixed to the flange 5 is inserted into the heating pipe 3 from the upper opening of the heating pipe 3, and the flange 5 is fixed to the upper part of the heating pipe 3. This heating tube 3
Are provided in the vertical direction.

An upper pipe header 7 and a lower pipe header 9 which are provided in the horizontal direction are connected to the heating pipe 3 through a steam pipe 11 and a can water pipe 12. A return pipe 13 is connected between the upper header 9 and the lower header 9.

A safety valve 15 on the upper head 7 and a connection port 17 for connecting to a pressure gauge
Also, a steam supply port 19 is formed. The other end of a pipe 21, one end of which is connected to a device 20 for supplying steam, is connected to the steam supply port 19. A water supply port 22 for inflowing can water is formed in the lower header 9.

Therefore, the can water W that has flowed in from the water supply port 22 is stored inside the lower pipe header 9 and flows from the can water pipe 12 to the middle portion of the heating pipe 3.

At this time, the heating portion of the electric heater 1 is inserted below the water level surface of the can water inside the heating pipe 3.

Further, the canned water W also flows into the liquid column tube 23 provided in the vertical direction similarly to the heating tube 1. The liquid column tube 23 is connected to the upper part of the heating tube 3 at the upper part via an upper connecting tube 25.

Also, the lower part of the liquid column pipe 23 and the lower header 9 are connected to the lower connecting pipe 26.
Connected through. Inside the liquid column tube 23, a water level detection rod 27 for detecting the same water level surface as the water level surface of the can water W inside the heating tube 3 is provided. The water level detection rod 27 is a liquid column tube.
It is fixed on the top of 23. A water level display window 28 is provided on the outer surface of the liquid column tube 23. The water level inside the liquid column tube 23 can also be confirmed by the water level display window 28.

On the other hand, the device 20 is, for example, a steam cooker and has a door on one side.
30 are provided. In this electric boiler, the water inlet 22
When the can water W flows into the lower head 9 from the bottom, and when the water level surface reaches from the can water pipe 12 to the middle portion of the heating pipe 3, one of the water level detection rods 27 of the liquid column pipe 23 sends a signal to the controller 32. Then, the electric heater 1 is energized.

Then, the electric heater 1 heats the can water inside the heating pipe 3 to generate steam, which passes through the steam pipe 11 and the upper header 7
After being stored in the device 20, the steam V is fed into the device 20 through the pipe 21.

Since such an electric boiler is within the range of the length in the vertical direction between the heating pipe 3 and the flange 5 of the electric heater 3, the height of the electric boiler itself can be reduced.

[Problems to be Solved by the Invention] However, as shown in FIG. 3, the device 20 and the controller 32
Can not be integrated with the electric boiler, because the electric boiler, the device 20 and the controller 32 are separately installed in a narrow place, the work such as electric wiring and piping becomes complicated,
There is a problem that it takes time.

Therefore, an object of the present invention is to provide an electric boiler in which the electric boiler can be made compact and the devices attached to the electric boiler can be integrally stored even in a narrow space.

[Means for Solving the Problems] According to the present invention, there are provided an upper header having a steam supply port for supplying steam and an upper header having a water supply port for inflowing can water. Then, the upper header and the lower header are connected in communication with a heating pipe provided with an electric heater, and the can water that has flowed from the lower header to an intermediate portion in the heating pipe is heated. In an electric boiler in which steam flows into the upper header, the heating pipe is provided in a vertical direction, and the upper header that extends in a radial direction from an upper portion of the heating pipe with the vertical direction of the heating pipe as an axis and the heating An electric boiler is obtained, characterized in that it has said lower header which extends radially from the lower part of the pipe.

[Operation] Since the upper header and the lower header extend in the radial direction with the longitudinal direction of the heating pipe as an axial column, a large space is created between the upper header and the lower header.

Therefore, equipment and controllers are installed in this space. The electric boiler, equipment, and controller can also be housed in the box.

[Embodiment] FIG. 1 shows an electric boiler according to an embodiment of the present invention.
In this embodiment, the same parts as those in FIG.

Referring to FIG. 1, the electric boiler has a heating tube 3 provided with a water resistant electric heater 1 such as a sheathed heater. An upper pipe header 7 and a lower pipe spacer 9 are connected to the heating pipe 3.

The upper pipe header 7 extends in the radial direction from the upper part of the heating pipe 3 with the heating pipe 3 as a vertical column. Lower heading 9
Is held by the legs 40 and extends in the radial direction from the lower portion of the heating tube 3 with the heating tube 3 as a vertical column.

The upper header 7 and the lower header 9 are connected and connected at the connection portion of the heating tube 3.

The upper header 7 and the lower header 9 are provided in parallel with each other and at an angle of 90 degrees with the heating tube 3 as an axial column. Further, the heating pipe 3, the upper header 7, and the lower header 9 are hermetically sealed, that is, made to withstand a predetermined pressure.

Now, when the can water W flows into the inside of the lower header 9 from the water supply port 22 formed in the lower header 9, the can water W also flows into the inside of the heating pipe 3.

At this time, the water level surface of the can water W reaches the middle portion of the heating pipe 3.

Therefore, the heat generating portion of the electric heater 1 is in the state of being inserted into the water W. The water level surface of the can water W is adjusted by the water level detection rod 27 provided in the liquid column tube 23.

When the electric heater 1 is energized in such a state, the canned water W inside the heating pipe 3 is heated to generate steam above the heating pipe 3, and steam inside the upper header 7 is generated. It is stored. This steam is a steam supply port formed in the upper header 7.
It is leaked from 19.

The steam V is sent to a device 20 such as steam cooking shown in FIG.

A series of these operations, that is, the detection of the water level of the can water W and the supply of the steam V are performed by the controller 32. This controller 32
Is equipped with operating parts such as an ON-OFF switch and a pilot lamp. The controller 32 and the device 20 are installed in the space formed by the heating pipe 3, the upper header 7 and the lower header 9. Therefore, the electric boiler, the controller 32 and the device 20 are integrally provided inside the pair of boxes 42.

The box 42 shown in FIG. 2 has a door 3 of the device 20 on one side thereof.
0, an operation part of the controller 32, and a water level display window 28 of the liquid column tube 23 are provided.

Thus, close to the electric boiler, the controller 32 and the equipment
20 are provided, and electric wiring and piping are provided to each other.

[Effects of the Invention] As described above with reference to the embodiments, according to the electric boiler of the present invention, it is possible to create an effective space portion in the width direction and the depth without changing the height of the conventional electric boiler. As a result, the equipment attached to the electric boiler can be stored compactly.

Therefore, it is possible to provide an effective electric boiler when installing the electric boiler and the devices attached thereto in a narrow space.

[Brief description of drawings]

FIG. 1 is a perspective view of an electric boiler showing an embodiment of the present invention, FIG. 2 is a perspective view of a state in which equipment attached to the electric boiler of FIG. 1 is installed, and FIG. 3 is a conventional electric boiler. It is a perspective view. 1 ... Electric heater, 3 ... Heating tube, 7 ... Upper heading,
9: Lower pipe head, 19: Steam supply port, 22: Water supply port,
23 …… Liquid column tube, 27 …… Water level detection rod.

Claims (1)

[Scope of utility model registration request] 1. An upper pipe header having a steam supply port for supplying steam, and a lower pipe header having a water supply port for inflowing can water, wherein the upper pipe header and the lower pipe are provided. An electric boiler that connects the port to the heating pipe provided with an electric heater, heats the canned water flowing from the lower pipe header to an intermediate portion in the heating pipe, and causes steam to flow into the upper pipe header. In the above, the heating pipe is provided in the longitudinal direction, and the longitudinal direction of the heating pipe is used as an axial column, and the upper pipe header extending radially from the upper part of the heating pipe and the lower part extending radially from the lower part of the heating pipe. An electric boiler characterized by having a header.