JPS62225261A - Nozzle for steam generator - Google Patents

Abstract

PURPOSE:To obtain the titled safe nozzle for a steam generator without blowing off hot dew droplets by forming the leading discharge side of the nozzle with a hydrophilic good thermal conductor, and forming the steam inflow side with a highly water repellent member. CONSTITUTION:The nozzle 19 is composed of a nozzle body 41 made of copper which is a hydrophilic good thermal conductor and a coating 42 of highly water repellent tetrafluoroethylene resin which is applied to the inner surface on the stem inflow side of the nozzle body 41 in the nozzle for injecting steam of the steam generator. The agglomeration of water droplets is thus prevented by the highly water repellent member, the diameter of the water droplet is kept small, small droplets pushed out by the steam current re brought into contact with the hydrophilic good thermal conductor to form a water film, and the water is evaporated. Accordingly, the blowoff of water droplets is controlled, and safety is secured.

Description

[Detailed description of the invention] 【Technical field】

The present invention relates to a nozzle for a steam generator that injects steam.

[Background technology]

In devices that eject generated steam from a nozzle, especially in devices that eject steam toward the human body, such as steam-type facial devices and inhalers, the nozzle structure is extremely ff! It is essential. Only steam is ejected, but hot condensed water droplets (hot water beads) are ejected along with the steam, although this is often determined by the nozzle.
If only steam is not injected, there is a risk of burns. However, in conventional nozzles, it is not possible to reliably prevent the spouting of condensed water droplets, and hot condensed water droplets sometimes spout out, making the user feel hot.

[Purpose of the invention]

The present invention has been made in this respect, and its object is to provide a nozzle for a steam generator that is safe because no hot condensed water droplets are spouted out.

[Disclosure of the invention]

However, the nozzle of the steam generating W device according to the present invention is
The tip discharge side is made of a hydrophilic thermally conductive material, and the steam inflow side is made of a highly water-repellent material.The highly water-repellent material prevents condensed water droplets from agglomerating and keeps them small. Then, small water droplets are spread out using a hydrophilic thermal conductor to form a water film and evaporate. The present invention will be described in detail below based on the illustrated embodiment. The illustrated example is a facial beauty device that sprays ionized steam,
To explain the overall structure of the facial beauty device, it consists of a housing 3 in which a water supply tank 2 is installed on the upper surface, and an arm 4 attached to a receiver 31 on the outer surface of the housing 3 with a shaft 32 so as to be able to swing up and down. A nozzle block 9 equipped with a nozzle 19 for ejecting steam is provided at the tip of the arm 4 whose angle can be changed by loosening the arm holder 40. The steam generation chamber 1 that generates steam injected from the nozzle 19 is installed in the housing 3 in a state where it is suspended from the bottom plate by legs 35, and the inside is blocked by the baffle plate 14 hanging from the top plate. It is divided into two chambers that communicate at the bottom, and the nozzle 1 is installed on the top of one chamber.
A steam discharge port 17 connected to the steam outlet 9 is provided with a heater 5 on the bottom, and a water level sensor SI is installed in another room. This water level sensor S1 includes a reed switch part S I+ hanging from the top plate of the steam generation chamber 1 and a float part Sl□ (equipped with a permanent magnet for driving the reed switch) which is extrapolated from the reed switch part 81-2. A float switch system is used, and the exposed part to the steam generation chamber 1 is installed in an electrically insulated state. This water level sensor S detects the initial full water level Ll+, energizes the heater 5 and the high-pressure discharge unit 61, and thereafter operates the electromagnetic pulp 8, which will be described later, upon detection of the lower limit water level. . Note that even when the water level reaches the full water level LH, the amount of water in the steam generation chamber 1 is small, and steam is generated immediately after heating by the heater 5 is started. Water is supplied to the steam generation chamber 1 from the water supply tank 2. The water supply tank 2, which is detachable from the housing 3, has a built-in valve that is always biased in the closing direction by a spring. Water is supplied to the steam generation chamber 1 through a replenishment chamber 7 formed as a recess on the upper surface of the housing 3. The replenishment chamber 7 includes a stepped portion 70 on which the water tank 2 is placed, and a bottle 71 erected from the bottom.
A water level sensor S2 is provided as a float switch consisting of a reed switch part S21 and a part S2 70 and a part S2□, and the bottom surface thereof is connected to the water supply port 15 of the steam generation chamber 1 through a water supply pipe 75. . bottle 7
1 pushes open the valve of the water supply tank 2 placed on top of the supply chamber 7 with the cap 21 facing downward, and leads the water in the water supply tank 2 into the supply chamber 7. The water level in the supply chamber 7 is maintained at the level L-2 of the lower surface of the cap 21 facing downward until the water supply tank 2 is emptied. Further, the water level sensor S2 is in a conductive state when the water level in the replenishment chamber 7 is at the above level L, and is cut off when the water level in the replenishment chamber 7 decreases to below the L0 level in the figure. It functions as a water drain sensor. An electromagnetic pulp 8 is provided in the middle of the water supply pipe 75. This is the water level sensor S in the steam generation chamber 1.
, which opens and closes depending on the output of the steam generation chamber 1.
When the water level inside reaches the lower limit water level LL, it opens for a predetermined time,
Water in the supply chamber 7 is sent to the steam generation chamber 1. Steam obtained by heating water in the steam generation chamber 1 with the heater 5 is guided from the steam outlet 17 to the nozzle 19.
Is there elasticity provided at one end? F18 and the steam discharge port 17 are not directly connected, but are connected via a discharge W60 in which a discharge electrode 6 is installed. Steam is ionized by discharge between discharge electrodes 6 connected to a high-pressure discharge unit (not shown). Now, there is one nozzle attached to the nozzle block 9 by the holder 47, and this nozzle is formed so that its jetting direction is perpendicular to the steam passage up to this point, and the rear end protrudes into the steam passage. This structure prevents hot condensed water droplets from spewing out in the steam passage.
A nozzle body 41 made of copper, which is a hydrophilic good thermal conductor, and a highly water-repellent tetrafluoroethylene resin coating 42 applied to the inner surface of the steam inlet side of the nozzle body 41.
This prevents hot condensed water droplets from spewing out. That is, even if water droplets adhere to the inner surface of the nozzle 19, the highly water-repellent coating 42 prevents the water droplets from agglomerating and keeps them small, and large water droplets are immediately dispersed into smaller water droplets. The nozzle 19 is pushed by the steam flowing inside the nozzle 19.
When the small water droplets flow toward the discharge side of the tip of the nozzle, they come into contact with the exposed surface of the nozzle body 41, which is a hydrophilic thermally conductive material, and are spread out to form a water film.The temperature of this water film increases as the nozzle body 41 is heated with steam. Since the amount of water is high, it evaporates immediately. Furthermore, even if further water droplets are pushed out from the tip of the glue 19, these water droplets are absorbed by the water absorbent body 44. Figure fjS4 shows that the inner surface of the tip discharge side, which is the hydrophilic thermally conductive surface of the glue 19, is made with small irregularities 43 to increase the surface area, so that water droplets can easily spread to form a water film and evaporate easily. It is something that

【Effect of the invention】

As described above, in the present invention, by preventing the aggregation of water droplets with a highly water-testable member and keeping the particle size of the water droplets small, and by bringing the small water droplets pushed out by the steam flow into contact with a hydrophilic thermally conductive material, Because it evaporates as a water film, there is no possibility that condensed water droplets will be spewed out along with the steam.
It is safe as there is no risk of burns.

[Brief explanation of drawings]

Fig. 1 is a sectional view of a facial beauty device equipped with one embodiment of the present invention;
The figure is a perspective view of the same as above, the fIS3 figure is a cross-sectional view of the same nozzle as above, and FIG. , 41 is a nozzle body made of copper as a hydrophilic good thermal conductor, and 43 is an uneven surface. Agent Patent Attorney Ishi 1) Ai Figure 7 Figure 3 Figure 4

Claims (3)

[Claims] (1) A nozzle for a steam generator, characterized in that the discharge end side is made of a hydrophilic thermally conductive material, and the steam inlet side is made of a highly water-repellent material. (2) Claim 1, characterized in that the highly water-repellent member is formed of a tetrafluoroethylene resin coating.
The nozzle of the steam generator described in Section 1. (3) A nozzle for a steam generator according to claim 1, characterized in that an unevenness is formed on the distal end discharge side.