JPH0430470Y2 - - Google Patents

Description

[Detailed explanation of the idea] (Industrial application field) The present invention relates to a hot water mixing faucet for tap water.

(Prior art and its problems) Generally, hot water supply using tap water involves connecting the tap water to a heating mechanism such as a boiler or water heater via a pressure reducing valve.
This is done by ignition by operating a flow switch. In this case, the water pressure is reduced twice by the pressure reduction by the pressure reducing valve and the fluid pressure drop when passing through the narrowed or bent heating passage in the heating mechanism, and therefore, due to some circumstances, Furthermore, when pressure is reduced, the flow switch is automatically activated again, and hot water is no longer supplied even when needed, which is something we often experience on a daily basis. In this regard, various improvements in heating mechanisms and valve mechanisms of mixing faucets have been disclosed.

The present invention is a mixing faucet with a mechanism for supplying hot water and water by merging and mixing them into a cheese-shaped mixing water supply pipe.
Since there is a pressure difference between the tap water pressure and the hot water pressure passing through the heating mechanism, if this pressure difference becomes larger, the tap water pressure will act as a backflow pressure against the hot water during mixing, reducing or preventing the hot water from flowing out. The present invention has been made with this in mind, and for this reason, the mixing hot water supply section has been improved from a different perspective from the conventionally disclosed improvements in valve section mechanisms.

(Means for Solving the Problems) In order to achieve the above object, the present invention provides a hot water passage that communicates with the hot water faucet the inside of the hot water supply pipe section that discharges hot water flowing from the faucet from the faucet. A water passage communicating with the faucet is separated, and a separating wall is formed near the faucet to a position slightly inward from the end of the faucet. It is formed by forming an inclined surface that rises toward the central axis direction.

(Function) According to this, hot water and water flow in parallel in the direction of the faucet through separate passages, and flow out while mixing near the faucet, so that the hot water pressure is not reduced.

(Example) The present invention will be described below with reference to drawings shown as an example.

In Figures 1 and 2, the mixing faucet of the present invention consists of a hot water faucet 1 that communicates with a heating mechanism such as a boiler, a faucet 2 that is directly connected to the water supply, and a mixing part 10 that discharges hot water flowing from both faucets to the faucet. ing. The hot water faucet 1 has an inflow side joint pipe part 3 and an outflow side joint pipe part 4, and a water valve 7 consisting of a valve seat and packing formed at the end of a valve shaft 6 which is rotated by a handle 5. The faucet 2 has an inflow joint pipe part 8 and an outflow joint pipe part 9, and the other parts have a similar structure. Hot water faucet 1, faucet 2
All of these are not limited to the above-mentioned configurations, and may be conventionally known or other appropriate configurations.

The mixing part 10 includes connecting pipe parts 11 and 12 connected to the respective outlet joint pipe parts 4 and 9 of a hot water faucet and a water faucet, and a faucet 14.
A hot water supply water pipe section 13 extending in the direction is branched, and a partition wall 15 is provided inside the hot water supply water pipe section 13 to communicate with a hot water passage 16 that communicates with the connection pipe section 11 to the hot water faucet and the connection pipe section 12 to the faucet. The water passage 17 is separated from the water passage 17.
The partition wall 15 is formed near the faucet 14 to a position slightly inward from the end of the faucet, and the inner surface of the end of the faucet is formed as an inclined surface 18 toward the center axis of the faucet.

The above-mentioned connecting pipe parts 11 and 12 and the outflow side joint pipe part 4,
9 may be connected directly, by a cap nut, or by interposing another joint pipe. The hot water supply pipe section 13 may be a single pipe, or may be connected in the middle with a cap nut or screw.

FIG. 3 and subsequent figures show the hot water pipe section 1 in the above configuration.
3 is rotatably configured.

First, in FIG. 3, a hot water supply pipe section 13a, which is formed by separating a hot water passage 16a and a water passage 17a by a partition wall 15a, has its base end rotatably inserted into a substantially central part of a separation chamber 20. . The interior of the separation chamber 20 is divided into two upper and lower chambers in the figure, one of which is a hot water chamber 21.
A connecting pipe part 11a connected to the outflow side joint pipe part 4 of the hot water faucet is formed to extend outwardly, and a connecting pipe part 1a connected to the outflow side joint pipe part 9 of the faucet is formed in the other side, that is, the water chamber 22.
2a is formed to extend outward, and a tube holder 23 is formed which penetrates approximately the center of the two chambers and into which the base end of the hot water supply pipe 13a is inserted, and the inner peripheral portion of each tube holder 23 O-rings 24, 24, 24 for watertightness are respectively attached to the tube holder 23, and a male threaded portion 25 is protruded from the outside of the insertion opening of the tube receiving portion 23, and a cap nut 26 is screwed thereto. The hot water supply water pipe section 13a inserted into the separation chamber 20 has an opening 27 formed in the circumferential surface of the hot water passage 16a that communicates with the hot water chamber 21 when its base end is fully inserted to the lower end of the separation chamber, and An opening 28 communicating with the chamber 22 is formed on the circumferential surface of the water passage 17a, and a groove 29 receives the O-ring at a predetermined position around the outside of the hot water supply pipe corresponding to between the openings 27 and 28 and on the upper and lower sides thereof. In addition, a protrusion 30 for locking the cap nut 26 is formed on the inner side of the tube.

In the above, the entire inside of the end of the hot water supply water pipe section 13a is the hot water passage 16a, and the water passage 17a is the hot water passage 16a.
The end of the passage is closed at a position between 1 and 22 to increase the amount of hot water flowing into the hot water passage 16a and prevent the hot water pressure from decreasing. Hot water supply water pipe section 13b
The hot water passage 1 of the hot water chamber 21b is formed until the end.
An opening 27b is formed only on the circumferential surface of the water chamber 22b.
It is also possible to form an opening 28b only on the circumferential surface of the water passage 17b in a portion thereof.

In addition, the male thread part 25, the cap nut 26, the protrusion part 3
0 is not necessarily required.

FIG. 5 shows an example of a design modification in which the connecting pipe portions 11c and 12c are formed at the same level as the separation chamber 20c in the configuration shown in FIG.
Similarly, it is also possible to form both the connecting pipe sections in the extending direction of the hot water supply pipe section with respect to the separation chamber.

If the above configuration is adopted, the hot water faucet can be configured as appropriate, and a rotatable mixing faucet can be obtained by simply combining only the separation chamber and the hot water supply pipe portion as parts.

(Effects of the invention) In a conventionally configured cheese pipe mixing faucet in which hot water joins from the horizontal direction and flows out into a branch pipe, that is, a faucet, tap water pressure may act as backflow pressure to push hot water back. This also occurs when many faucets with the same heating source are used in parallel and the water pressure is reduced, and even when used alone, the water pressure is lower than the Japanese standard water pressure of 0.6 to 1 kg/cm ² such as American faucets. If a water faucet manufactured for high water pressure (US standard is approximately 3 kg) is used as a hot water faucet, the water pressure difference will be further expanded due to the mechanical pressure loss. , a situation may arise where the tap water pressure restricts the flow of hot water, causing the flow switch to operate and the heating to be extinguished.

According to the present invention, hot water entering the hot water supply water pipe section 10 from the connecting pipe section 11 and water entering the hot water supply water pipe section 10 from the connecting pipe section 12 flow through isolated passages up to the vicinity of the faucet, so that the backflow pressure caused by the tap water pressure is Hot water will flow smoothly to the faucet without being affected.

In addition, if the hot water passage is not separated near the faucet and the hot water is merged at the source of the hot water supply pipe, turbulence (eddy flow) will occur at the converging part of the pipe, and the flow of low-pressure hot water will be smooth. However, according to this invention, the passage is separated up to the vicinity of the faucet, and the flow flows out at the same time as it merges.
There is no need to worry about tap water pressure having a negative effect on the flow of hot water. Moreover, by forming an inclined surface on the inner surface of the end of the faucet that rises from the inside of the hot water supply pipe toward the center axis of the faucet, the hot water and water, which had been separated by the partition wall, are now separated by the inclined surface. Since the hot water and water can be guided and flowed in the direction of the central axis to mix and flow out of the faucet at the same time, the hot water and water do not flow into the hands while being separated, and the hot water and water are mixed quickly and reliably.

Further, according to the present invention, the hot water faucet can have an appropriate configuration, and only the mixing part and the hot water supply pipe part need to be combined as parts, so the construction is simple and highly versatile.

[Brief explanation of the drawing]

Figure 1 is a cross-sectional view of the mixed faucet of the present invention with a part of the hot water supply pipe section omitted, Figure 2 is a schematic cross-sectional view taken along the - line in Figure 1, and Figure 3 is a freely rotatable hot water supply water pipe section. FIGS. 4 and 5 are schematic cross-sectional views showing a modification of FIG. 3. 1...Hot water faucet, 2...Water faucet, 3, 8...Inflow side joint pipe section, 4, 9...Outflow side joint pipe section, 10...Mixing section, 11, 12...Connection pipe section, 13 ... Hot water supply pipe section, 14 ... Faucet, 15 ... Partition wall, 16 ... Hot water passage, 17 ... Water passage, 18 ... Inclined surface, 20 ...
...Separation room.

Claims (1)

[Scope of utility model registration request] The interior of the hot water supply pipe section that discharges hot water flowing in from the hot water faucet from the faucet is separated into a hot water passage that communicates with the hot water faucet and a water passage that communicates with the faucet. A mixing faucet that is formed slightly inward from the end of the faucet, and on the inner surface of the end of the faucet where no partition wall is formed, an inclined surface is formed that rises from the inside of the hot water supply pipe toward the center axis of the faucet. .