JPS62242702A - Steam generator - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a steam generator that can easily generate steam and is easy to maintain and manage, such as cleaning.

(Prior art) Conventionally, as this type of steam generator, for example,
There is one as shown in Japanese Patent No. 150595.

This conventional steam generator includes a heating element in which a heater is embedded, an outer shell formed around the outer periphery of the heating element with a steam reservoir space formed between the heating element, and a steam reservoir space formed in the outer shell. a steam outlet provided to communicate between the space and the outside; a vaporization passageway having a suction port bored in the heating body and communicating with the outside; and a discharge port communicating with the steam storage space; The system is equipped with a water supply device that intermittently supplies water into the passage through the suction port, and the water supplied from the water supply device is heated by a heater while flowing through the vaporization passage to generate steam. However, the generated steam enters the steam reservoir space through the discharge port and is ejected to the outside from the steam jet port in the outer shell.

(Problems to be solved by the invention) With the conventional structure described above, water scale accumulates in the discharge port and steam jet port after long-term use, which deteriorates the circulation in these areas and causes steam generation failure. However, in order to remove scale, it is necessary to disassemble the entire steam generator, which poses a problem in that maintenance such as scale removal is difficult.

(Means for Solving the Problems) The present invention has been devised in view of the above-mentioned problems, and aims to provide a steam generator in which the accumulation of limescale is small and the removal of limescale can be easily carried out. The purpose is to:
a heating body in which a heater is embedded; a copper pipe that is wound around the outer periphery of the heating body and whose one end is connected to an external water supply device; and a steam inlet communicating with the other end of the copper tube and a steam outlet communicating with the outside. It consists of an airtight steam cylinder, and the water supplied from the water supply device is vaporized while flowing through the copper pipe, and steam is generated in the steam cylinder.

(Function) Water supplied from the water supply device is heated and vaporized by a heater embedded in the heating element while flowing through a copper tube wound around the outer periphery of the heating element. The generated steam enters the steam cylinder from the end of the copper tube, is stored in the steam reservoir space of the steam cylinder, and is ejected to the outside from the steam outlet as necessary.

In this way, in the steam generator of the present invention, the steam generated in the copper tube is stored in the steam storage space, unlike the conventional steam generator where the generated steam passes through a complicated passage and is stored. Therefore, all the limescale that occurs will accumulate in the steam reservoir space. By cleaning this steam reservoir space regularly, the limescale that occurs can be easily removed, making maintenance management easier. .

(Example) Hereinafter, one embodiment of the present invention will be described based on the drawings.

FIG. 1 shows a longitudinal sectional view of the steam generator of this example, and FIG. 2 shows a left side view of FIG. 1.

In the figure, a heating body 1 is formed into a cylindrical shape, and a heater 2 having a nichrome wire or the like installed therein is embedded along its longitudinal direction. In addition, a thermoprotection tube 3 equipped with a thermostat is buried in the heating body 1 in parallel with the heater 2. That is, the thermostat within this thermoprotective tube 3 is electrically connected to the heater 2 and controls the temperature of the heater 2 to an appropriate temperature.

A copper tube 4 is wound around the outer periphery of the heating body 1. One end 4a of the copper pipe 4 is connected to a water supply device 5 composed of an external water supply pump or the like, and water can be completely supplied into the copper pipe 4 from the water supply device 5. Further, the other end 4b of this copper tube 4 protrudes to the outside and is connected to a steam cylinder 7, which will be described later.

An outer shell 6 is further provided around the outer periphery of the copper tube 4 wound along the outer periphery of the heating body 1.

Therefore, the outer shell 6 brings the copper tube 4 into close contact with the outer periphery of the heating element 1 . Copper pipe 4. The outer shell 6 is completely integrated.

The inside of the small tea cylinder 7 located above the outer shell 6 and extending in the longitudinal direction of the outer shell 6 is a steam reservoir space 7a, which contains steam. A steam-filled lower b is formed at the right end of the cylinder 7 in the drawing. An inlet socket 8 is screwed into the steam input lower b, and the other end 4b of the copper pipe 4 is connected to the inlet socket 8 in communication.

Therefore, when the water flowing inside the copper tube 4 is heated by the heater 2 and steam is generated inside the copper tube 4, the generated steam passes through the other end 4b of the copper tube 4 and from the steam input lower b to the steam cylinder 7. The structure is such that the steam flows into the steam reservoir space 7a. In addition, at the left end of the steam cylinder 7 in the figure, there is a steam ejection lower c that communicates with the outside.
A spout socket 9 is screwed into this steam jet lower c. By connecting an appropriate adjustment means to this spout socket 9, steam can be spouted to the outside as required. Further, a cleaning hole 7d is formed above the steam jetting lower c, and a sealing bolt 10 is screwed into the cleaning hole 7d from the outside. This sealing bolt 10 is removed when cleaning the inside of the steam cylinder 7.

In the steam generator of this example configured in this way, the temperature of the heater 2 is controlled by the thermostat in the thermoprotective tube 3, so the heater 2 is always heated to an appropriate temperature, and its thermal energy is transferred to the heating element 1. It is transmitted and heats the heating body 1. By heating the heating body 1, the copper tube 4 wound around its outer periphery is completely heated, and the water flowing inside the copper tube 4 is vaporized. The generated steam flows from the other end 4b of the copper tube 4 through the inlet socket 8 into the steam reservoir space 7a. Therefore, all the water scale that is generated with the generation of steam will be deposited in this steam reservoir space 7a, and if water scale is accumulated in this steam reservoir space 7a due to long-term use, the sealing bolt 10 should be removed and the cleaning hole By appropriately squirting a compressed cleaning liquid or the like into the steam reservoir space 7a from 7d, limescale can be easily removed from the steam jetting lower c.

Next, the manufacturing process of the steam generator of this example will be described. The heater 2 and the thermoprotection tube 3 are installed in a predetermined mold, and a molten metal such as aluminum is poured into the mold. The cylindrical heating body 1 is completed with the heater 2 and the thermoprotective tube 3 buried in predetermined positions using the cast molten metal such as aluminum. The copper tube 4 is wound around the outer periphery of the completed heating element 1 by an appropriate means, and then the heating element 1 and the wound tube 11 are placed in another formwork (not shown). By pouring the molten metal into the mold, an outer shell 6 is formed in which the fX tube 4 is wound around the outer circumference of the heating element 1, and this outer shell 6 allows the copper tube 4 to be wrapped around the outer circumference of the heating element 1. The heating element 1 is completely in close contact with the surroundings, and its outer periphery is covered with the outer shell 6, and the outer shell 6 and the heating element 1 are completed as an integrated shape.

A steam cylinder 7 formed separately is placed close to the completed outer shell 6, and then a water supply device 5 is connected to one end 4a of the copper pipe 4, and the other end 4b is connected to the steam cylinder 7. The outer periphery of the integrated outer shell 6 and steam cylinder 7 is further covered with a heat insulating material 11 to complete the steam generator of this example.

Incidentally, a mounting member 12 that can be fixed at a predetermined position may be provided at an appropriate location on the outer periphery of the heat insulating material 11.

According to such a manufacturing process, the steam generator of this example can be easily formed using a lightweight aluminum material with good thermal conductivity, and the steam cylinder 7 is formed separately. Therefore, cleaning can be performed by removing only the steam cylinder 7, and maintenance management is also very easy.

(Effects of the Invention) The steam generator of the present invention includes a heating body in which a heater is embedded;
a copper tube wound around the outer periphery of the heating element and connected at one end to an external water supply device; a shell, and an airtight steam cylinder arranged in parallel on the outside of the outer shell and having a steam storage space inside, a steam inlet communicating with the other end of the copper tube, and a steam outlet communicating with the outside. By configuring the system so that the water supplied from the water supply device is vaporized while flowing in the copper pipe and generates steam in the steam cylinder,
It has a structure that prevents limescale from accumulating, and also has the effect of making it easy to remove limescale and maintenance management.

[Brief explanation of drawings]

The figures show one embodiment of the present invention, in which FIG. 1 is a longitudinal sectional view of a steam generator, and FIG. 2 is a left side view of FIG. 1.

Claims (1)

[Claims] a heating element in which a heater is embedded; a copper tube wound around the outer periphery of the heating element and connected at one end to an external water supply device; and a steam inlet communicating with the other end of the copper tube and a steam outlet communicating with the outside. 1. A steam generator comprising an airtight steam cylinder, the water being supplied from a water supply device being vaporized while flowing through a copper pipe, and generating steam in the steam cylinder.