JPH0552370A - Humidifier - Google Patents

Abstract

PURPOSE:To obtain a humidifier which can prevent inconvenients such as corrosion in a space between a water feeding pipe joint and a water feeding pipe, water leakage, and drop-off of the water feeding pipe. CONSTITUTION:A steam generator 1 and a water feeder 2 are provided. A container 11 of the steam generator 1 has a water feeding pipe joint 111 protruding outside, which is covered on an outer surface with protection film 112 formed integrally and intimately. A heater 12 of the steam generator 1 is combined by heat with the container 11, and a steam discharging cylinder 13, with one end 131 facing an evaporating surface of the container 11, has a steam outlet at the other end 132. A water feeding pipe 23 is inserted into the water feeding pipe joint 111.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric steam type humidifier for heating and evaporating water.

[0002]

2. Description of the Related Art As a humidifier, an ultrasonic atomization type is well known. Recently, an electric steam type humidifier for heating and evaporating water has been proposed. The electric steam type humidifier has a structure in which water is heated and atomized, and the atomized water is discharged. As a prior art document, there is JP-A-3-144237. FIG. 1 shows an example of the humidifier previously proposed. 1 is a steam generator, 2 is a water supply device, and 3 is a support case. The steam generator 1 is a dish-shaped container 1 for containing water.
1, having a heat generating device 12 and a vapor discharge cylinder 13. Container 1
1 is formed of, for example, a metal material such as aluminum that is easy to mold and process and has a high thermal conductivity, or a ceramic material such as alumina that has a relatively good thermal conductivity. Container 11
Has a water supply pipe joint 111 projecting to the outside at an appropriate position such as the bottom. Further, the container 11 has an auxiliary container 14 on the opening surface side. Auxiliary container 14 is O-ring 1
It is arranged in close contact with the end surface of the container 11 via 5, and is attached and fixed to the container 11 by a coupling tool 16 such as a screw. The container 11, the auxiliary container 14, and the like are supported by the support case 3.

The heating device 12 can be constituted by a positive temperature coefficient thermistor having a surface heating structure. When a positive temperature coefficient thermistor is used, the heat generating surface is electrically insulated and brought into surface contact with the outer surface of the container 11 for thermal coupling. A plurality of positive temperature coefficient thermistors forming the heat generating device 12 are provided according to the heat generation amount and the required heat generation amount. A specific structure of the heat generating device 12 using the positive temperature coefficient thermistor is disclosed in Japanese Patent Laid-Open No. 3-144237 cited as a prior art document.

One end 131 of the vapor discharge cylinder 13 is the container 1
The steam outlet section 132 faces the evaporation surface side of No. 1 and the other end side is a steam outlet section 132, and constitutes a steam passage extending from the one end side 131 to the steam outlet section 132. Then, an external air introduction path 133 formed by a cutout is provided in the tubular portion that serves as a steam passage. Reference numeral 17 is an outer cover. The outer cover 17 has an outside air introduction hole 171 and is used as a support for supporting the vapor discharge cylinder 13.

The water supply device 2 is provided with a water storage tank 21, an auxiliary tank 22 and a water supply pipe 23 which are detachable from each other.
The water storage tank 21 has a tank portion 211 and a water tap 212. The water tap 212 is configured by attaching a cap 215 having a valve body 210 to a ring-shaped projection 213 provided on the tank portion 211 by means such as screw connection. 216 is a spring and 217 is an O-ring.

The surface 221 of the auxiliary tank 22 has a protrusion 22.
Two are provided. Due to the protrusion 222, the valve body 21
0 is pushed up against the spring 216, and water is supplied from the water storage tank 21 to the auxiliary tank 22.

The auxiliary tank 22 is connected via a water supply pipe 23 to a water supply pipe joint 111 of the container 11 constituting the steam generator 1. The water supply pipe 23 is provided for both the container 11 and the auxiliary tank 22 in order to facilitate the manufacture and assembly of
It is made independent from 22, and is connected between both 11-22. Further, the water supply pipe 23 is a flexible pipe body containing silicone resin, rubber or the like as a main component for facilitating the connection work, and is connected to the water supply pipe joint 111 by utilizing its elasticity. In order to increase the mechanical strength of the connection, it is clamped and fixed using a clamp or the like not shown.

The water in the container 11 which has been vaporized by the heating action of the heating device 1 becomes steam and rises inside the steam discharge cylinder 13 and is discharged from the steam outlet 132 to the outside. Here, since the outside air introduction path 133 is provided on the side of the steam passage from the evaporation surface of the container 11 to the steam outlet section 132, a large amount of outside air is introduced from the outside air introduction path 133, and the steam outlet section 132 is introduced.
The temperature of the discharged steam at is lowered to a temperature that does not cause burns.

In addition, a flow of air from the outside air introduction passage 133 toward the opening 132 is generated inside the steam discharge tube 13, and this air flow promotes the flow of steam inside the steam discharge tube 13 to improve the efficiency of the steam. Well released.

[0010]

However, the above-described conventional humidifier has a water supply pipe joint 1 at the contact interface between the water supply pipe joint 11 and the water supply pipe 23 during long-term use.
Gap corrosion occurs in 11 and water pipe joint 111 and water pipe 2
It was found that there is a possibility of causing a trouble such as water leakage at the connection portion with 3, or the water supply pipe 23 falling off and becoming unusable, or an accident. The reason is considered as follows. (A) The water supplied from the water supply device 2 to the container 11 is tap water and contains a chlorine component such as Mg or Ca. As shown in an enlarged scale in FIG. 4, these components are so-called water scales 4, and not only on the inner surface of the container 11, but also on the joint 111 for the water supply pipe.
And deposits and adheres to the connection portion and contact interface of the water supply pipe 23.

Moreover, unfortunately, the scale of water is concentrated in a low water level region such as the inside of the water supply pipe 23. Humidifier 11
The water level is maintained at a predetermined level if sufficient water is stored in the tank of the water supply device 2, but as the usage time increases, the amount of water stored in the water supply device 2 decreases, and finally The normal water supply action is not performed and the water level in the container 11 is lowered. When the water level of the container 11 is lower than a predetermined position, normally, the temperature of the container 11 is detected by a temperature detecting means such as a bimetal, and the power is cut off to prevent idle cooking. Vapor continues to be released in the low water level area until the power is cut off, and Mg contained in water,
The calcination component such as Ca is in a concentrated state. As a result of repeating the above-described cycle, more water scale 4 adheres to the inside of the water supply pipe 23 in the low water level region and the contact interface between the water supply pipe 23 and the water supply pipe joint 111. (B) Tap water contains chlorine ions and the like in addition to Mg and Ca. The chlorine ions penetrate into the gap between the water supply pipe joint 111 and the water supply pipe 23, and the water supply pipe joint 111
Causes corrosion called pitting corrosion. Moreover, as described above, the chlorine component such as Mg or Ca enters and adheres to the gap between the water supply pipe joint 111 and the water supply pipe 23.
These chlorine components have high water absorption. Therefore, the above-mentioned pitting corrosion phenomenon is promoted due to the chlorine component.

Therefore, an object of the present invention is to solve the above-mentioned problems and to provide a humidifier capable of preventing gap corrosion between the water supply pipe joint and the water supply pipe, water leakage, water pipe dropout, and the like. is there.

[0013]

In order to solve the above problems, the present invention is a humidifier having a water supply device and a steam generator, wherein the steam generator is a container for containing water and a heating device. And a steam discharge cylinder, wherein the container has a water supply pipe joint projecting to the outside, the water supply pipe joint is covered by a protective film whose outer surface is integrally adhered,
The heating device is thermally coupled to the container, the vapor discharge cylinder has one end side facing the evaporation surface of the container and the other end side being a steam outlet portion, and the water supply device has a flexible water supply pipe. The water supply pipe is inserted into the water supply pipe joint.

[0014]

[Function] Since the water supply pipe joint of the container is covered with a protective film whose outer surface is integrally and closely formed and the water supply pipe of the water supply device is inserted into the water supply pipe joint, the water supply pipe joint and the water supply pipe are Even if a chlorine component such as Mg or Ca adheres to the contact interface with, the protective film prevents gap corrosion of the water pipe joint due to the pitting phenomenon.

The steam generator includes a container for containing water, a heating device, and a steam discharge cylinder. The heating device is thermally coupled to the container. One end of the steam discharge cylinder is opposed to the evaporation surface of the container and the other end thereof is opposed to the evaporation surface. Since it is a steam outlet, and the water supply device has the water supply pipe inserted into the water supply pipe joint provided in the container, an electric steam type humidifier for heating and evaporating water can be obtained.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a front partial sectional view of a humidifier according to the present invention, and FIG. 2 is an enlarged sectional view of a container portion. In the figure, the same reference numerals as those in FIG. 1 denote the same components. The water supply pipe joint 11 of the container 11 is covered with a protective film 113 whose outer surface is integrally and closely formed. The water supply pipe 23 of the water supply device 2 is inserted into a water supply pipe joint 111 covered with a protective film 112.

As described above, the joint 1 for the water supply pipe of the container 11
Reference numeral 11 denotes a protective film 112 whose outer surfaces are integrally adhered to each other.
Since the water supply pipe 23 of the water supply device 2 is inserted into the water supply pipe joint 111, the water supply pipe joint 1
Even if a calcination component such as Mg or Ca adheres to the contact interface between the water supply pipe 11 and the water supply pipe 23, the protective film 112 can prevent gap corrosion of the water supply pipe joint 111 due to the pitting phenomenon. As the protective film 112, a coating material having excellent heat resistance and water resistance and having a material similar to that of the water supply pipe 23 is preferably used. As a specific example, a silicone resin-based coating material can be mentioned.

The humidifier shown in the embodiment has a water level detector 5. The water level detector 5 has a magnetic response switch 51 such as a reed switch and a magnet float 52, and is provided inside the auxiliary tank 22. When the water level in the auxiliary tank 22 is lowered, the magnet float 52 is lowered according to the water level, and the magnetic response switch 51 is operated.
The operation of the magnetically-actuated switch 51 shuts off the power supply circuit to the heating device 12 and prevents simmering.

[0019]

As described above, the humidifier according to the present invention has a water supply device and a steam generator, and the steam generator includes a container for containing water, a heating device, and a steam discharge tube. The container has a water supply pipe joint projecting to the outside, the water supply pipe joint is covered by a protective film whose outer surface is integrally adhered, the heating device is thermally coupled to the container, and the steam discharge pipe is The water supply device has a flexible water supply pipe, and the water supply pipe is inserted in the water supply pipe joint, so that the water supply pipe joint and the water supply pipe joint It is possible to provide an electric steam-type humidifier that can prevent gap corrosion between pipes, water leakage, and water pipe dropout.

[Brief description of drawings]

FIG. 1 is a front partial cross-sectional view of an electric steam humidifier according to the present invention.

FIG. 2 is an enlarged cross-sectional view of a container portion of the electric steam humidifier according to the present invention.

FIG. 3 is a front partial cross-sectional view of a conventional electric steam humidifier.

FIG. 4 is an enlarged cross-sectional view of a container part for explaining the problems of the conventional electric steam humidifier.

[Explanation of symbols]

 1 Steam Generator 2 Water Supply Device 11 Container 111 Water Supply Pipe Joint 112 Protective Membrane 23 Water Supply Pipe

Claims (2)

[Claims] 1. A humidifier having a water supply device and a steam generating device, wherein the steam generating device includes a container for containing water, a heating device, and a steam discharge cylinder, and the container projects to the outside. Having a water supply pipe joint, the water supply pipe joint is covered with a protective film whose outer surface is integrally adhered,
The heating device is thermally coupled to the container, the vapor discharge cylinder has one end side facing the evaporation surface of the container and the other end side being a steam outlet portion, and the water supply device has a flexible water supply pipe. The humidifier, wherein the water supply pipe is inserted into the water supply pipe joint. 2. The humidifier according to claim 1, wherein the protective film is a resin coating film.