JPS6243003Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The present invention is a device that can be attached to the tip of a hot water faucet of an instantaneous water heater, a faucet pipe of a water faucet, etc. The present invention relates to an adapter that can be used for both centralized water supply/hot water supply (hereinafter simply referred to as hot water supply) and substantially truncated cone-shaped diffusion type hot water supply with one component.

(Prior art) In a household gas instantaneous water heater as shown in Figure 4, an ignition and hot water supply unit is installed at the bottom of the container a.
ON, OFF When valve b is turned ON, tap water is discharged at a maximum of 6 /
The state where the pressure is reduced to min (however, the source side is 25~26/
min) and is supplied as hot water,
If the adapter A attached to the tip of the faucet pipe d increases the pipe resistance beyond the pressure reducing valve c, hot water cannot be supplied on its own and the hot water stays in the meandering pipe e and evaporates due to heat. This poses the risk of so-called "dry cooking." On the other hand, it is highly necessary to use hot water from faucet pipes for centralized hot water supply in the form of a straight column or diffused hot water in the form of a truncated cone, depending on the purpose of supplying hot water to kettles, pots, etc., or washing dishes.
Such an adapter A has recently come into widespread use. By the way, conventional faucet pipe adapters have been developed due to the above-mentioned technical background, that is, in order to be able to perform both diffused or centralized hot water supply within the constraints of not increasing pipe resistance unnecessarily. It was designed to increase hot water supply over a relatively large area. One example of implementation is shown in Fig. 6. A porous water sprinkling plate B is fixed to the bottom of an inverted bowl-shaped container A whose diameter is larger than that of a faucet pipe D, and a cylindrical drain pipe H is passed through the center. By providing a large number of small holes in the sprinkling plate around the drain tube and within a circular ring area, and rotating a switching knob fixed to the drain tube along its diametrical direction. There is a system in which the straight columnar hot water supply from the drain pipe and the ring-shaped diffusion type hot water supply from the water sprinkling plate can be carried out independently depending on the user's selection.

(Problems to be solved by the invention) As mentioned above, the conventional adapter had a central straight column-shaped hot water supply area and a ring-shaped diffusion type hot water supply area around it formed independently of each other for each part. ,
Since the hot water supplied to the inverted bowl-shaped vessel was diffused within the vessel and then supplied using a ring-shaped diffusion type, the jetting pressure was low, so it was necessary to make the intervals between the small holes relatively wide. This has the disadvantage of increasing the diameter of the adapter. Moreover, operating the switching knob during washing with water is also troublesome and difficult.

In view of the above, it is an object of the present invention to provide a compact adapter with a small diameter that does not unduly increase the pipe line resistance beyond the pressure reducing valve. Another object of the present invention is to provide an adapter that does not require switching operations and is a single component that can be used for both centralized and diffused hot water supply (both are used at all times).

(Means for solving the problem) The purpose of the above is that the water passage passing through the inside of the plug-shaped adapter body attached to the faucet from the base side to the tip side is narrowed near the tip side. , an expansion chamber that extends rapidly outwards from the front end of this constriction section, and a large number of small holes that are suspended horizontally at the opening at the tip of this expansion chamber. This is achieved by a structure including a perforated plate.

(Function) With the above configuration, the hot water discharged from the faucet becomes a jet of hot water in the shape of a straight column whose outer diameter is approximately the inner diameter of the constricted part that is squeezed centripetally at the constricted part of the flow channel, and It passes through the perforated plate with force, and forms the above-mentioned straight columnar jet stream (more specifically, an aggregate of thin straight hole streams that have passed through the small holes of the perforated plate) from the center of the tip of the adapter. At the same time, the pressure of the hot water running along the inner wall of the passageway is increased at the constriction part, but the hot water rapidly advances from the constriction part into the expanding chamber and gradually opens into a truncated cone from the perforated plate directly below. It is dispersed in a jet stream. In this case, when the vertical column-shaped jet passes through the corresponding perforated plate, the backflow that partially occurs inside the expansion chamber is deflected outward along the tapered wall of the expansion chamber, resulting in a noticeable flow toward the adapter tip. Developing resistance can be prevented. As a result, the straight columnar jet can be used for centralized hot water supply, and the truncated conical jet on the outside thereof can be used for diffused hot water supply.

(Embodiment) Fig. 1 to Fig. 5 illustrate a preferred embodiment of the present invention, including the state of use. FIG. 2 is a plan view of FIG. 1, FIG. 3 is a bottom view of FIG. 1, FIG. 4 is a schematic explanatory diagram of applying the attachment of the present invention to a small water heater with a main stop, and FIG. is a partially cutaway longitudinal sectional front view showing the water supply and distribution state when the present invention is in use;
FIG. 6 is a perspective view showing an example of a conventional adapter. Reference numeral 1 denotes a plug-shaped adapter body that is attached to a faucet pipe d by an upper nut 2. A water passage 3 is provided inside the adapter body from the base side to the tip side, and this water passage 3 is located near the tip side. The cross section of the passage is constricted by a circular projecting wall 41 which is made to gradually thicken the water passage wall 31 and protrude in the centripetal direction, thereby forming the constricted portion 4. An expansion chamber 5 that is connected to the front end of the constricted portion 4 and is rapidly expanded outward is formed with an expansion tapered wall 51 and is open to the water passageway 3 at the tip of the main body 1. A lower nut supports the perforated plate 6 in a manner that prevents it from being pulled out so that the perforated plate 6, which has a large number of small holes 61 through the opening at the tip of the expansion chamber 5, can be hung horizontally. 7 is screwed and fixed 71 to the lower part of the main body 1.
8 is a U-shaped gasket to prevent loosening. As shown in FIG. 4, the perforated plate 6 has circular holes 611 with a slightly larger diameter (for example, 0.8 mm x (100±3) holes) in a circular area corresponding to the circular projecting wall 41. For the ring range Y corresponding to the opening 5, a circular hole 612 with a slightly smaller diameter [for example, 0.5 mm x (25 ± 20)]
] are provided for each. An appropriate opening angle θ of the expanding tapered wall 51 is, for example, 25 to 35 degrees. 9 indicates an O-ring.

(Effect of the invention) The hot water discharged from the faucet pipe d is
A jet of cylindrical hot water that is squeezed centripetally and whose outer diameter is approximately the inner diameter of the throttle part 4 passes through the expansion chamber 5 and passes through the circular hole 611 from the circular area X of the corresponding perforated plate 6 to the fifth hole. As shown in the figure, the hot water that is injected from the center of the tip of the adapter A as a cylindrical jet S ₁ and advances along the inner wall of the passageway 3 is pressurized in the throttle section 4 and continues to expand. It advances vigorously into the chamber 5, passes through the circular holes 612 in the ring range Y of the perforated plate 6 immediately below, and is ejected as a truncated cone-shaped jet _S2 that gradually opens forward. These mutually concentric jets S ₁ ejected from the tip of one adapter A are straight-forward and suitable for concentrated hot water supply for hot water kettles, pots, etc. On the other hand, the jets S ₂ gradually open in the forward direction and have a high jetting force. Since the jet flow _S1 is weaker than the jet flow S1, by placing tableware and the like at a distance below the adapter A, it is suitable for wide-angle and gentle hot water supply, that is, for washing. Even if a backflow occurs in the expansion chamber 5, it is successively deflected outward by the tapered wall 51, so that this backflow can be prevented from developing into an increase in pipe resistance during use.

Thus, according to the present invention, unreasonable pipe resistance is not given to the side beyond the pressure reducing valve, and one of the hot water once pressurized at the throttle part is arranged in a straight column shape and the other part in a truncated cone shape in a concentric relationship. Because it produces a jet stream, it has good injection efficiency and can be made compact with a small diameter.Furthermore, the two types of jet streams that are constantly ejected can be used depending on the purpose, and there is no need to switch... It has practical effects such as

Although the present invention has been explained above using a stop-start type gas instantaneous water heater as an example, the present invention is not limited to this and can also be applied to a stop-start type gas instantaneous water heater. It can equally be applied to water supply.

[Brief explanation of the drawing]

Fig. 1 is a partial longitudinal sectional front view of a faucet attachment showing an embodiment of the present invention, Fig. 2 is a plan view of Fig. 1, Fig. 3 is a bottom view of Fig. 1, and Fig. 4 shows the faucet attachment of the present invention. A schematic explanatory diagram that can be applied to a small water heater with a main shut-off type, and FIG. 5 is a partially cutaway longitudinal sectional front view showing the water supply state when the present invention is in use.
FIG. 6 is a perspective view showing an example of a conventional adapter. Explanation of the symbols: 1...adapter body, 3...water passage, 4...throttle section, 5...expansion chamber, 6...perforated plate, d...faucet pipe.

Claims (1)

[Scope of utility model registration request] A passageway 3 that passes through the inside of the plug-shaped adapter body 1 attached to the faucet pipe d from the base side to the tip side has a constricted portion 4 that is narrowed near the tip side, and a tip of this constricted portion 4. This faucet pipe adapter includes an expansion chamber 5 that is connected to the side and rapidly expanded outward, and a perforated plate 6 that is suspended horizontally at the tip opening of the expansion chamber 5.