JPH0514831B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a means for attaching a hot water mixing device for mixing hot water and water to obtain an appropriate temperature.

Conventional technology This type of conventional hot water mixing device is shown in Figure 3 a and b.
I found something like the one shown. (For example, JP-A-60-
136678 Publication) In Figures 3a and 3b, the mixing valve 1 that mixes hot water and water is operated by operating the temperature control knob 2 to set the desired mixing temperature. The mixing ratio of water and water is adjusted, and mixed hot water at a set temperature is supplied from the faucet 3.

A hot water supply pipe 4 and a water supply pipe 5 that supply hot water and water to the mixing valve 1 are connected to the mixing valve 1 through a hot water side connection pipe 6 and a water side connection pipe 7. The hot water side connecting tube 6 and the water side connecting tube 7 have exactly the same shape, and to explain the hot water side connecting tube 6, one end has a threaded portion 8 and is screwed into the hot water supply pipe 4. connected. The hot water side connection tube 6 has a crank shape with two right-angled bends, and a temporary water stop valve 9 and a check valve 10 are provided at the right-angle bends. They are connected by screwing together with a nut 11. The reason why such a crank-shaped hot water side connection pipe 6 and water side connection pipe 7 are used is that the state in which the hot water supply pipe 4 and the water supply pipe 5 are installed varies depending on the site. That is, the horizontal distance and vertical level of the hot water supply pipe 4 and the water supply pipe 5 are different. In order to absorb this difference, the hot water side connecting tube 6 and the water side connecting tube 7 are installed by adjusting their angles with the hot water supply pipe 4 and the water supply pipe 5, which are threadably connected, being the center of rotation.

Problems to be Solved by the Invention However, the conventional configuration as described above has the following problems.

(1) Even if the hot water supply pipe 4 and the water supply pipe 5 are at the same level, the mixing valve 1 may differ depending on the horizontal separation distance.
The mounting heights of the parts are different.

(2) If the levels of the hot water supply pipe 4 and the water supply pipe 5 are different, the angles of the hot water side connection pipe 6 and the water side connection pipe 7 will be different; Since the pipes are made long enough to accommodate the horizontal separation distance between the hot water supply pipe 4 and the water supply pipe 5, the different angles are noticeable and the appearance is not good.

(3) The nut 11 for fastening the connecting tube to the mixing valve 1 is located on the back side of the mixing valve 1, and requires a large tool such as a spanner or adjustable wrench, resulting in poor workability.

The present invention solves such conventional problems, and aims to provide a hot water mixing device that is easy to determine the installation level of the mixing valve, is advantageous in terms of aesthetics and economy, and has excellent workability. shall be.

Means for Solving the Problems In order to solve the above problems, the hot water mixing device of the present invention has a threaded portion at one end as a connecting tube for connecting the mixing valve, the hot water supply pipe, and the water supply pipe. A so-called crank-shaped hot water side connection pipe I with two right-angled bends that are threadedly connected to the supply pipe and the water supply pipe.
and a water side connecting tube, and an L-shaped hot water side connection that is connected to the hot water side connecting tube I and the water side connecting tube I, and has one right angle bend part that is telescopically connected to the mixing valve. It consists of a cylinder and a water side connecting cylinder.

Effect The present invention has the above-described configuration, and when installing the mixing valve, the angle adjustment of the hot water side connection tube I and the water side connection tube I around the hot water supply pipe and the water supply tube, and the angle adjustment of the hot water side connection tube I and the water side connection tube By adjusting the length of the water-side connection tube with respect to the mixing valve, variations in the installation distance of the hot water supply pipe and the water supply pipe and level differences can be adjusted.

Embodiments Hereinafter, embodiments of the present invention will be described based on the accompanying drawings.

Figures 1a, b and c show top, front and side views of an electrically controlled mixing valve. A mixing valve 12 that mixes hot water and water is a pressure balance valve 1 that balances the pressure of hot water and water provided in a valve frame 13.
4. A hot water side valve body 15, a water side valve body 16, which adjust the mixing ratio of hot water and water, as well as adjust the flow rate and shut off the water.
A flow rate sensor 17 that detects the amount of mixed hot water, a temperature sensor 18 that detects the temperature of mixed hot water, a faucet 19 that supplies mixed hot water, a hot water side motor 21 provided in a frame 20 attached to the valve frame 13, and a water side. It is composed of a motor 22, a setting device 23 for setting the mixed water temperature, a controller 24, and the like. Then, by setting the desired mixed water temperature with the setting device 23, the setting device 2 is set with the controller 24.
The set temperature signal from 3 and the mixed water temperature signal from the temperature sensor 18 are compared, and the hot water side motor 21 and the water side motor 22 are driven and adjusted to a mixing ratio that provides a predetermined temperature, and the desired mixed water temperature is automatically set. This is what you get.
This mixing valve 12 and a hot water supply pipe 25 that supplies hot water and water
A hot water side connecting tube I27, a water side connecting tube I28, a hot water side connecting tube 29, and a water side connecting tube 30 are provided as connection tubes for connecting the water supply pipe 26 and the hot water side connecting tube I27. These hot water side and water side connection tubes are configured to have exactly the same shape. FIG. 2 shows the details of these connecting tubes, and shows a cross-sectional view of the water side connecting tube as a representative. The water side connection tube I28 connected to the water supply pipe 26 has a threaded portion 31 at one end, is threadedly connected to the water supply pipe 26, and has a crank shape with two right-angled bends as a flow path. The other end of the threaded portion 31 is fitted and connected to the water side connecting tube 30. This fitting structure consists of a water side connecting tube 30 having an O-ring 23 and a slip-off prevention groove 33 at the end of a cylindrical water side connecting tube I28.
A structure is adopted in which one end of the connector is inserted and the fixing screw 34 is screwed in with a screwdriver to prevent the connector from coming off. And water side connection tube 30
has an L-shape with one right-angled bend, and its other end is telescopically fitted and connected to a cylinder portion 35 provided in the mixing valve 12. Then, it is fixed at a groove 37 formed in the water side connecting tube 30 by a fixing screw 36 provided on the valve frame body 13. This groove 37 is formed by a screw 36 to prevent the cylindrical surface of the water side connection tube 30 that fits into the cylinder 35 from being damaged, and also prevents the mixing valve 12 from being damaged by the water side connection tube 30.
This is provided to prevent rotation around 0. Further, the water side connection tube I28 is provided with a temporary water stop valve 38, and the water side connection tube 30 is provided with a filter 39 and a check valve 40.

Next, the construction method of this embodiment having the above configuration will be described. For hot water supply pipes 25 and water supply pipes 26 that are piped at different distances and levels,
First, screw the hot water side connecting tube I27 and the water side connecting tube I28. This hot water side connection tube I27 and water side connection tube I28
The angle is adjusted around the hot water supply pipe 25 and the water supply pipe 26 to adjust the difference in level between the two pipes.
Then, insert the hot water side connecting tube 29 and the water side connecting tube 30 into the hot water side and water side cylinder parts of the mixing valve 12, and hold them at the hot water side connecting tube I27 and the water side connecting tube I28 without fixing them. I'm coming. The length is adjusted by expanding and contracting the hot water side connecting tube 29 and the water side connecting tube 30 with respect to the mixing valve 12, and fitting them into the hot water side connecting tube I27 and the water side connecting tube I28. Make fine adjustments so that the mixing valve 12 is horizontal, and then tighten the fixing screws 34 and 36.
Tighten and secure with a screwdriver. If you want to install the mixing valve 12 not in the center of the hot water supply pipe 25 and the water supply pipe 26, but to swing it to the left or right depending on the distance from the bathtub, Since the water-side connecting tube 30 is extendable and retractable, it can be freely installed.
In this respect, the conventional one has a hot water supply pipe 25 and a water supply pipe 2.
It is only possible to adjust the separation distance and level of 6, but it is impossible to shift the installation horizontally.

As is clear from this embodiment, the hot water supply pipe 25
The level of the water supply pipe 26 is adjusted using the hot water side connection pipe I25.
Since the separation distance adjustment is mainly handled by the hot water side connecting tube 29 and the water side connecting tube 30, the hot water side connecting tube I25 and the water side connecting tube I26 can be shortened. . Therefore, due to the separation distance between the hot water supply pipe 25 and the water supply pipe 26, the mixing valve 1
The installation height of 2 will not change significantly. In addition, the hot water side connection tube I25 and the water side connection tube I26
Differences in mounting angles are less noticeable and do not spoil the aesthetics, and the material used for the connecting tube can be saved and heat radiation can be reduced. Furthermore, as in this embodiment, the hot water side connection tube I27 and the water side connection tube 2
9, and if the water side connecting tube I28 and the water side connecting tube 30 are connected by fitting, it is possible to fix them with a screwdriver without requiring a large tool, and the construction work becomes easier.
Further, the same can be said about the fitting connection between the mixing valve 12, the hot water side connecting tube 29, and the water side connecting tube 30. Furthermore, in this case, the fitting connection has the advantage that the degree of expansion and contraction can be adjusted steplessly when adjusting the length without being affected by the thread pitch, unlike the screw connection.

As an effect of this embodiment, the connecting tube I
By making the connection between the valve and the mixing valve a fitting connection, installation work such as attachment/detachment, adjustment, and fixing can be made much easier.

Effects of the Invention As described above, the hot water mixing device of the present invention provides the following effects.

(1) The horizontal distance between the hot water supply pipe and the water supply pipe can be adjusted using the hot water side connection tube and the water side connection tube, which can be retractably attached to the mixing valve and whose positions can be adjusted. The installation height of the mixing valve will not be different.

(2) Since the adjustment of the level difference between the hot water supply pipe and the water supply pipe is done by the hot water side connection tube I and the water side connection tube I, and the adjustment of the separation distance is done by the hot water side connection tube and the water side connection tube, The hot water side connecting tube I and the water side connecting tube I can be short, and the difference in angle for level adjustment is not noticeable, does not spoil the aesthetics, and is also economical.

(3) Since the hot water side connecting tube and the water side connecting tube can be adjusted telescopically with respect to the mixing valve, it is possible to install the hot water supply pipe and the water supply pipe by shifting them from side to side instead of positioning them in the center. The degree of freedom in installation is increased.

[Brief explanation of drawings]

1a, b, and c are a sectional top view, a sectional front view, and a sectional side view of a hot water mixing device showing one embodiment of the present invention; FIG. 2 is an enlarged sectional view of the same essential parts; FIG. 3 a , b are a side view and a front view showing a conventional hot water mixing device. 12...Mixing valve, 25...Hot water supply pipe, 26...
Water supply pipe, 27...Hot water side connection tube I, 28...Water side connection tube I, 29...Hot water side connection tube, 30...Water side connection tube, 31...Threaded portion.

Claims (1)

[Scope of Claims] 1. A mixing valve for mixing hot water and water, and a connecting tube for connecting this mixing valve, a hot water supply pipe, and a water supply pipe, which has a threaded portion at one end and is connected to the hot water supply pipe or the water supply pipe. A crank-shaped first hot water side connecting tube having a plurality of right angle bends that is threadedly connected to the pipe; a second hot water side connecting tube having an L-shape and having a right-angled bent portion, one end of which is connected to the other end of the threaded portion of the water side connecting tube, and the other end of which is telescopically connected to the mixing valve; A second water side connection tube is provided, and angle adjustment of the first hot water side connection tube and the first water side connection tube with respect to the hot water supply pipe and the water supply pipe, and A hot water mixing device in which variations in the installation distance and level difference between the hot water supply pipe and the water supply pipe are adjusted by adjusting the length of the second water side connection pipe with respect to the mixing valve. 2 The connection between the first hot water side connecting tube and the second hot water side connecting tube and the first hot water side connecting tube and the second hot water side connecting tube are as follows:
The hot water mixing device according to claim 1, which is a fitting connection. 3. The hot water/cold water mixing device according to claim 1, wherein the second hot water side connecting pipe and the second water side connecting pipe and the mixing valve are extendably connected to each other through a fitting connection.