JPS5838241Y2 - steam generator - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a steam generator suitable as a steam supply source for steam irons and the like.

Conventionally, this type of steam generator has been provided that continuously supplies water to the heating part for steam generation via a pump etc. to vaporize it, but in steam irons etc. No steam is required, so a relatively small amount of water per unit time is continuously supplied to the heating section.

However, it is extremely difficult to operate pumps etc. continuously while supplying a relatively small amount of water in this way due to the structure of the pumps, etc., and it is especially difficult to adjust the amount of water supplied, and it is difficult to operate pumps etc. continuously while supplying a relatively small amount of water. There are some drawbacks that can occur.

For this reason, when the amount of water supplied is excessive, the water vaporization ability of the heating section is reduced, and when the amount of water supplied is insufficient, the amount of steam generated is insufficient, and stable steam generation is continued. The problem was that it was difficult to do so.

For this reason, in order to simplify the adjustment of the amount of water supplied, a configuration is available in which water is intermittently supplied to the heating element using a water supply pump, etc., but with this configuration, the generation of steam is intermittently. There was a drawback that steam at a predetermined pressure could not be continuously supplied.

The present invention was developed in view of the above circumstances, and its purpose is to easily adjust the amount of water supplied by intermittently supplying water into the evaporation passage using a water supply device. It is an object of the present invention to provide a steam generator that can continuously and stably obtain high-temperature, high-pressure steam without causing intermittent generation of steam.

An embodiment of the present invention will be described below based on drawings.

Reference numeral 1 denotes an outer shell made of, for example, aluminum alloy, in which fugi members 3 and 4 are screwed airtightly onto both ends of a cylindrical outer shell main body 2, and mounting holes 5 are provided in the lid 3 on three sides. is formed.

Reference numeral 6 denotes a cylindrical heating body made of, for example, an aluminum alloy, which has one end hermetically screwed into the mounting hole 5 and is spaced within the outer shell 1 from the outer shell main body 2 with a predetermined gap. The outer shell 1 is arranged so as to surround the heating element 6 with a predetermined gap therebetween, and a steam retention space 7 is formed between the outer shell 1 and the heating element 6. There is.

Reference numeral 8 denotes a vaporization passage bored in the heating element 6 so as to be oriented in the radial direction thereof, and an inlet 8a at one end of the passage is connected to the outside via the end surface 6a of the heating element 6 on the side of the mounting hole 5. The discharge port 8b at the other end is communicated with the steam retention space 7 via the side surface 6b of the heating body 6.

Reference numeral 9 denotes a steam jet port provided in a portion of the outer shell main body 2 spaced apart from the discharge port 8b so as to communicate the steam retention space 7 with the outside, and a steam supply pipe 10 is provided at this port.

Reference numeral 11 denotes a through hole provided in a portion of the outer shell main body opposite to the discharge port 8b so as to communicate the steam retention space 7 with the outside, and a safety valve 12 is attached to this hole.

Reference numeral 13 denotes a water supply device, such as a pump, for intermittently supplying water into the vaporization passage 8 through its suction port 8a, and its suction side is connected to a water supply source (not shown) via a water supply pipe 14. The discharge side is connected to the exhaust pipe 1 for air removal.
It is connected to the suction port 8a through a control valve 16 for adjusting the flow rate provided with a valve 5 and a check valve (not shown).

When the water supply device 13 is energized and driven, it allows a predetermined amount of water to pass through at appropriate intervals.

17 is a heater embedded thermally in a deep hole 18 drilled in the heating body 6; 19 is a deep hole 2 also bored in the heating body 6;
This heat-sensitive tube 19 is buried for thermal conduction in
detects when the temperature of the heating body 6 exceeds a temperature set by a temperature setting device (not shown) (for example, 110 to 120° C.) and drives the water supply device 13 with electricity;
Moreover, when the temperature falls below the set temperature, this is sensed and the water supply device 13 is shut off.

In addition, 21 is a bimetallic switch for overheating prevention provided to sense the temperature of the outer shell 1, and this cuts off the electricity to the heater 17 when the temperature of the outer shell 1 rises above a predetermined value. It is something.

Next, the operation of the above configuration will be explained.

That is, when the heater 17 is energized and generates heat, the temperature of the heating element 6 rises, and when this temperature exceeds the temperature set by a temperature setting device (not shown), the heat-sensitive tube 19 senses the temperature and the water supply device 13 is energized and driven. Ru.

For this reason, water from the water supply source is intermittently sent to the control valve 16 via the water supply device 13, the flow rate is controlled by the control valve 16, and the water is supplied into the vaporization passage 8 little by little.

Then, the small amount of water is rapidly vaporized in the vaporization passage 8 by the heat of the heating element 6, and becomes supersaturated steam, which is then discharged into the steam retention space 7 from the discharge port 8b.

The steam discharged into the steam retention space 7 as described above is heated by the side surface 6b of the heating body 6, and
The steam flows along the steam outlet 9 and is supplied to a load such as a steam iron via a steam supply pipe 10.

According to the above structure, the supersaturated steam generated in the vaporization passage 8 is heated again by the side surface 6b of the heating body 6 in the steam retention space 7, and becomes extremely dry steam.

Also, since supersaturated steam is discharged into the steam retention space 7, dew condensation occurs on the side surface 6b of the heating element 6, etc.
It is also vaporized by the heating element 6, so it is efficient.

In addition, since it has a double structure in which the outer shell 1 is provided to surround the heating element 6 to form the steam retention space 7, the internal temperature and pressure drop can be suppressed, and high temperature and high pressure steam can be continuously supplied. can occur.

According to experiments by the inventor of the present invention, it has been found that the heater is extremely efficient, with the amount of water vaporized reaching a maximum of 800 cc/hour when the power consumption of the heater is 1 KW.

As specifically explained in the above embodiments, the steam generator of the present invention has a heater and a heat-sensitive tube embedded in a rod-shaped heating body from its end surface, and a passage for vaporization is bored, so that the heating A cylindrical outer shell is placed around the body to seal the space, the vaporization passage is communicated with the space, and a water supply device with a water supply port opening/closing function is provided for the vaporization. and the space is connected to a steam consumption device, and the water supply port of the water supply device is opened and closed depending on the temperature sensed by the heat-sensitive tube, and the water supply port of the water supply device is Since the amount of water supplied is adjusted by intermittently supplying water by opening and closing the mouth, the amount of water supplied can be easily adjusted.
This adjustment is performed automatically in response to temperature changes in the heating element, and since it has a double structure with an outer shell placed around the heating element, the space between the heating element and the outer shell is used for steam storage. Despite being intermittently supplied with water by the water supply device, it is possible to continuously and stably supply steam to the steam consuming device.Furthermore, with the double structure described above, the space is Since the steam discharged inside is heated again, extremely dry steam can be obtained, and since only one heater is required to heat the product twice, it can be manufactured at a low location. be effective.

[Brief Description of the Drawings] The drawings show one embodiment of the present invention, and FIG. 1 is a longitudinal side view;
FIG. 2 is a sectional view taken along line II--II in FIG. 1. 1: Outer shell, 6: Heating body, 7: Steam retention space, 8: Vaporization passage, 13: Water supply device, 17: Heater, 19: Heat sensitive tube.

Claims (1)

[Scope of utility model registration request] A heater and a heat-sensitive tube are embedded into a rod-shaped heating element from its end.
Further, a vaporization passage is bored, a cylindrical outer shell is arranged with a space around the heating body to seal the space, and the vaporization passage is communicated with the space, and a water supply is provided. Connecting a water supply device with a mouth opening/closing function to the vaporization passage,
A steam generator characterized in that the space is connected to a steam consumption device, and the water supply port of the water supply device is opened and closed based on the temperature sensed by the heat-sensitive tube.