JPH0637942B2 - Hot water mixing device - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mounting means of a hot and cold water mixing apparatus for obtaining an appropriate temperature by mixing hot water and water.

2. Description of the Related Art A conventional hot and cold water mixing apparatus of this kind has been shown in FIGS. (For example, JP-A-60-136678.
(2) a and b, a mixing valve 1 for mixing hot water and water is
If you set the desired mixed water temperature by operating the temperature control knob 2,
The mixing ratio of hot water and water is adjusted by the function of the built-in automatic temperature control mechanism, and the hot water having the set temperature is supplied from the faucet 3.

The hot water supply pipe 4 and the water supply pipe 5 for supplying hot water and water to the mixing valve 1 and the mixing valve 1 are connected by a hot water side connecting cylinder 6 and a water side connecting cylinder 7. The hot water side connecting cylinder 6 and the water side connecting cylinder 7 have exactly the same shape.
One end has a threaded portion 8 and is threadably connected to the hot water supply pipe 4. The hot water side connecting cylinder 6 has a crank shape having two right-angled bends, and a temporary water stop valve 9 and a check valve 10 are provided in the right-angled bends to connect the mixing valve 1. It is connected by screwing with a nut 11. The reason why such a crank-shaped hot water side connecting tube 6 or water side connecting tube 7 is 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 the 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 cylinder 6 and the water side connecting cylinder 7 are installed by adjusting the angles with the hot water supply pipe 4 and the water supply pipe 5 that are screw-connected as the center of rotation.

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

(1) The hot water side connecting cylinder 6 and the water side connecting cylinder 7 are exposed, which is not good in appearance, and is expensive because nickel-chrome plating is applied.

(2) Since the angle portions of the hot water side connecting tube 6 and the water side connecting tube 7 are exposed, it was dangerous for the body to hit when falling down during use.

The present invention solves the above-mentioned conventional problems, and an object of the present invention is to provide an inexpensive hot water mixing apparatus with improved aesthetics of the mixing valve and the connecting cylinder.

Means for Solving Problems The hot and cold water mixing apparatus of the present invention in order to solve the above problems,
Exposed type mixing valve body, electric drive means for driving the mixing valve body, mixed hot water temperature detector, mixed hot water temperature setting device, setting signal of the mixed hot water temperature setting device, and mixed hot water temperature detection The controller that controls the electric drive means by comparing the signals of the mixer, the hot water side connection tube, the water side connection tube, and is inserted between the mixing valve body and the electric drive means and fixed to the mixing valve body. A space is formed between the resin-made base part mounted on the base and the base part mounted on this base part, and a controller is built into this space so that the operation part of the mixed water temperature setting device is exposed to the surface. A frame body including a resin cover portion is provided, and at least the mixing valve main body and the hot water side connection cylinder are covered with the frame body.

Operation According to the present invention, the drive control means changes the mixing ratio of the mixing valve body based on the set value of the mixed hot water temperature setting means to obtain an appropriate temperature. Since the mixing valve main body is covered with the frame, the appearance and safety can be improved and the mixing valve main body can be provided at low cost.

Embodiments Embodiments of the present invention will be described below with reference to the accompanying drawings.

1 a, b, c show a top view, front view and side view of an electrically controlled mixing valve. The exposed installation type mixing valve body 12 for mixing hot water and water is a pressure balance valve 14 provided in the valve frame 13 for balancing the pressure of hot water and water, and adjusting the mixing ratio of hot water and water and adjusting the flow rate. The water-side valve body 15 for stopping water, the water-side valve body 16, a flow rate sensor 17 for detecting a mixed flow rate, and a faucet 18 for supplying the mixed hot water. A temperature sensor 19 as a mixed hot water temperature detector forming a part of drive adjusting means faces the flow path of the mixing valve body 12. Further, a frame 20 is attached to the mixing valve main body 12, and a hot water side motor 21 and a water side motor 2 which form drive adjusting means.
2, a setter 23 as a mixed hot water temperature setting means, and a controller 24 as a drive adjusting means are housed and provided. Frame 2
0 is the mixing valve body 12, the hot water side motor 21 and the water side motor 22
A space is formed between a resin base portion 20 'fixedly mounted on the mixing valve body 12 and a base portion 20' mounted on the base portion 20 '. A controller 24 is built into the inside, and it is composed of a resin cover portion 20 ″ with the operating portion of the setting device 23 facing the surface. By setting the desired mixed hot water temperature with the setting device 23, The controller 24 compares the set temperature signal from the setting device 23 and the mixed hot water temperature signal of the temperature sensor 19, and drives and adjusts the hot water side motor 21 and the water side motor 22 to a mixing ratio at which a predetermined temperature is obtained, and automatically. This is to obtain the desired mixed hot water temperature.
As a connecting cylinder for connecting the mixing valve main body 12, the hot water supply pipe 25 for supplying hot water and water, and the water supply pipe 26, a hot water side connecting pipe I
27, a water side connecting cylinder I28, a hot water side connecting cylinder II29, and a water side connecting cylinder II30 are provided. The hot water-side and water-side connecting cylinders have exactly the same shape. Hot water side connection tube I2
7 and the water side connecting cylinder I28 are respectively screwed into and connected to the hot water supply pipe 25 and the water supply pipe 26, and mainly adjust the mounting level difference between the hot water supply pipe 25 and the water supply pipe 26 by adjusting the angle. The hot water side connection cylinder II29 and the water side connection cylinder II30 are fitted and connected to the hot water side connection cylinder I27 and the water side connection cylinder I28, respectively.
Moreover, the mixing valve main body 12 is also provided so as to be able to expand and contract, and is fitted and connected. The hot water side connecting cylinder I27, the water side connecting cylinder I28, the hot water side connecting cylinder II29, the water side connecting cylinder II30, and the mixing valve body 12 are all made of cast metal without being plated, and are made of resin. It is configured to be covered by the body 20. Therefore, unlike the conventional case, it is possible to provide each connecting cylinder and the mixing valve main body 12 at a low cost without special plating, and it is excellent in appearance. Also,
Since the connecting cylinder and the mixing valve body 12 are covered with the frame 20 and are not directly exposed, it is possible to prevent the body from hitting these corners and being injured, and the hot water side connecting cylinder I27 and the hot water side connecting cylinder.
It is also possible to prevent the body from touching the surface of the hot water side passage of the II29 or the mixing valve body 12 and getting burned. Furthermore, frame 2
Since the electric parts such as the hot water side motor 21 and the water side motor 22 are housed in a part of 0, splashes of the mixed hot water can be prevented from being applied to the electric part. In addition, even if the electrical component is damaged, the resin frame 20 prevents the user from receiving an electric shock or passing through the mixing valve body 12 to leak electricity to the piping system. Further, the resin base portion 20 ′ causes the heat on the hot water side of the mixing valve body 12 to move to the hot water motor 21, the hot water motor 22, and the controller 24.
It is possible to prevent the dew condensation in the frame 20 in the summertime due to the influence of the low temperature part on the water side, and to improve the durability and reliability of the electric component. It is planned. Further, since the frame 20 is made of resin, it is not hard, and the corners on the molding must be rounded inevitably, so there is no danger even if it hits the body, and coloring is highly flexible. It has become a thing.

Next, the construction method of the present embodiment having the above configuration will be described. First, for the hot water supply pipe 25 and the water supply pipe 26 with different separation distances and levels, the hot water side connection cylinder I27
And the water side connection tube I28. This hot water side connection cylinder I27
The angle of the water-side connecting tube I28 is adjusted about the hot water supply pipe 25 and the water supply pipe 26 to adjust the level difference between the two pipes. Then, the hot water side connecting cylinder II29 and the water side connecting cylinder II30 are inserted into the hot water side and water side cylinder portions of the mixing valve 12,
Hot water side connecting cylinder I27 and water side connecting cylinder I28 without fixing
Bring it to. The side connecting cylinder II29 and the water side connecting cylinder II30 are expanded and contracted with respect to the mixing valve 12 to adjust the length, and the hot water side connecting cylinder I27 and the water side connecting cylinder I28 are fitted and finely adjusted and then fixed. Finally, the frame 20 in which electric components such as the hot water motor 21 and the water motor 22 are housed is mounted. Thereby, the hot water side connection cylinder I27, the hot water side connection cylinder I28, the hot water side connection cylinder II29, the hot water side connection cylinder II30, and the mixing valve body 12
Is completely invisible from the outside. Then, the hot water supply can be started and stopped and the mixed hot water temperature can be set only by operating the setting device 23 facing the surface of the frame 20.

In the present embodiment, an electrically driven hot and cold water mixing apparatus is taken as an example, but the concept can be applied to an apparatus including a part manually using a wax thermostat or a bimetal.

Effects of the Invention As described above, the hot and cold water mixing apparatus of the present invention has the following effects.

(1) Since the hot water side connecting cylinder, the water side connecting cylinder, and the mixing valve main body are covered with the frame, the appearance is improved and expensive plating as in the conventional case is not required, and thus the cost can be provided at a low cost.

(2) The resin base part allows the heat on the hot side of the mixing valve body to enter the frame equipped with electrical components such as electric drive means, controller and operating part to raise the ambient temperature, and It is possible to prevent dew condensation inside the frame due to the influence of low temperature part, such as in summer.
The durability and reliability of electrical components can be improved.

(3) Since the electrical components are covered by the base and cover,
The electrical insulation can be maintained without splashing water on the electrical components, and even if the electrical components are damaged, the resin frame can cause an electric shock to the user or can be transmitted through the mixing valve body to the piping system. There is no leakage.

(4) Since the frame is fixed to the mixing valve main body at the base part, the mixing valve main body and the frame can be handled as a single unit for easy handling, and the hands and body become hot during use. Also, safety can be secured because the hot water connection tube is not touched.

[Brief description of drawings]

1A, 1B, 1C, 1A, 1B, 1C, 1A, 1B, 1C, 1A, 1B, 1C, 1A, 1B, 1C, 1A, 1B and 1C show a hot and cold water mixing apparatus according to an embodiment of the present invention.
b is a side view and a front view showing a conventional hot and cold water mixing apparatus. 12 ... Mixing valve main body, 19 ... Temperature sensor (drive adjusting means), 20 ... Frame, 20 '... Base portion, 20 ".
Cover part, 21 ... Hot water side motor (drive adjusting means), 22
...... Water side motor (drive adjusting means), 23 ...... setting device (mixed hot water temperature setting means), 24 ...... control device (drive adjusting means),
25 ... Hot water supply pipe, 26 ... Water supply pipe, 27 ... Hot water side connection pipe I (Hot water connection pipe), 28 ... Water side connection pipe I (Water side connection pipe), 29 ... Hot water connection Tube II (Hot water connection tube), 30 ...
… Water side connection tube II (water side connection tube).

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP-A-60-3723 (JP, A) JP-A-60-136678 (JP, A) Actual development Sho-56-40276 (JP, U)

Claims (1)

[Claims] 1. An exposed installation type mixing valve main body for mixing hot water and water to supply the mixed hot water, an electric drive means for driving the mixing valve main body, and a mixed hot water temperature detector for detecting the mixed hot water temperature. A mixed hot water temperature setting device for setting the mixed hot water temperature; a controller for comparing the setting signal of the mixed hot water temperature setting device with the signal of the mixed hot water temperature detector to control the electric drive means; A hot water-side connecting tube that connects the supply pipe, the water supply tube, and the mixing valve body, a water-side connecting tube, and is inserted between the mixing valve body and the electric drive means and fixed to the mixing valve body. A space is formed between the mounted resin base part and the base part mounted on the base part, and the controller is built in the space so that the operation part of the mixed hot water temperature setting device faces the surface. A frame made of a resin-made cover part, and at least the mixing valve body and the hot water side connection are made by this frame. Hot and cold water mixing device configured to cover the.