JPH0519869A - Hot and cold water mixer - Google Patents

Abstract

PURPOSE:To obtain the hot and cold water mixer which is comfortable because of high hot and cold water mixing efficiency and uniform mixture. CONSTITUTION:In the hot and cold water mixer which has a controller controlling the temperature and flow rate of fed hot water, a mixing valve 115 controlled by the controller, and a mixing part 129 mixing the hot water and cold water supplied from the mixing valve 115, the mixing part 129 is provided with opening parts for the hot water and cold water in the same swivel direction and also provided with mixing projections to generate swivel flows of the hot water and cold water in the mixing part 129; and they are divided into small vortexes and the small vortexes of the hot water and cold water contact each other and are mixed to uniform temperature in a short time.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hot and cold water mixer for domestic use and industrial use for mixing hot water and hot water to supply hot water in a place of residence.

[0002]

2. Description of the Related Art The prior art will be described below. Figure 4
Shows an example of the prior art (Japanese Patent Laid-Open No. 63-24309). The hot water and the water supplied from the hot water pipe 1 and the water pipe 2 move the balance piston 3 by utilizing the pressure difference between the hot water pipe and the water pipe 2, and open the hot water throttle valve 4 and the water throttle valve 5 respectively. Changing the area, hot water opening and closing motor 1
0, the hot water valve 7 is operated, and the water valve 8 is operated by the water opening / closing motor 11, and the thermistor 9 detects the hot and cold water mixed state.
A signal is sent to the controller 15 to control the hot water temperature. On the other hand, as for the hot water supply flow rate, the fixed swirler 12 induces a swirl flow in the hot water supply, and the magnet ball 13 serves as a signal of the pulse counter 14, and the flow rate signal is sent to the controller 15.

As another conventional technique, FIG. 5 (Japanese Patent Laid-Open No. 63-7) is used.
A specific example is shown in Japanese Patent No. 5809). Referring to FIG. 5, the mechanism for absorbing pressure fluctuations of hot water and water is exactly the same as that of FIG. 4, except that the hot water adjusting valve 16 and the water adjusting valve 17 are coaxial and are driven by a hot water adjusting motor 18. Making adjustments. As compared with FIG. 4, the hot water opening / closing motor 10 and the water opening / closing motor 11 are used as a single hot water amount adjusting motor 18. However, as an alternative thereto, it is composed of a mixed water opening / closing valve 19 and a mixing valve opening / closing valve motor 20 for driving it.

In any case, a fixed swirler 1 for flow rate measurement
According to 2, hot water is used as a swirling flow, but it is difficult to perform complete mixing.

[0005]

The drawbacks of the above-mentioned prior arts are that the mixing of hot and cold water is not sufficient and comfort is not obtained when using hot water. The present invention was created to solve this problem.

[0006]

In order to solve the problems in the present invention, a controller for controlling the hot water supply temperature and the hot water supply flow rate, a mixing valve controlled by the controller, and hot water and water supplied from the mixing valve. In the hot and cold water mixer having a mixing section for mixing with each other, the mixing section has hot water and water openings provided in the mixing section in the same swirling direction, and a mixing projection is provided in the mixing section.

[0007]

The openings of water and hot water are provided in the mixing section in the same swirling direction, and the mixing projection is provided in the mixing section, so that water and hot water flow into the mixing section while swirling from the openings. The swirling flow consisting of hot water and water is divided into smaller vortices by the mixing protrusions, and then small vortices of water and small vortices of hot water come into contact with each other and mix to a uniform temperature in an extremely short time, so it is comfortable when using hot water. And the mixing efficiency of water and hot water can be improved.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The contents of one embodiment of the present invention will be described in detail below with reference to the drawings.

FIG. 1 shows a system diagram of a hot water supply system according to the present invention. Reference numeral 101 is a water pipe, 102 is a hot water pipe, and 103 is a pressure regulator. The water pipe 101 and the hot water pipe 102 are respectively pressure regulators 10.
It communicates with 3. 104 is a mixer for hot water and water. The mixer 104 communicates with the pressure adjuster 103, in which hot water and water are mixed at a predetermined flow rate ratio to obtain an appropriate temperature. Reference numeral 106 is a flow meter, and 107 is a hot water supply on-off valve, which communicates with the mixer 104, and the mixed hot water is supplied to the bathtub, shower, and washroom, respectively. 109 is a controller and the controller 109 is a flow rate signal 1
19, the temperature signal 120 is taken in, and the operating device 10
The control actuator 105 for controlling the flow rate ratio and the hot water supply on-off valve 107 are controlled in accordance with the condition designated by 8.

FIG. 2 shows a specific example of one embodiment of the present invention.
101 is a water pipe, water is from the water pipe 101, 102 is a hot water pipe,
Hot water is supplied from the hot water pipe 102. Water pipe 101 and hot water pipe 10
2 are each provided with a pressure detection port 118 to detect pressure fluctuations of water and hot water. The pressure detection port 118 communicates with the right chamber and the left chamber of the diaphragm 113 via the strainer 112 and the adjustable throttle valve 111. A pressure regulating valve 114, which is directly connected to the diaphragm 113 and maintains a constant mixing ratio of water and hot water, is attached. Reference numeral 115 is a mixing valve for mixing hot water and water, which is in communication with the pressure regulating valve 114 and in communication with the mixing valve 115 via the water chamber 124 and the hot water chamber 125. The control actuator 105 is directly connected to the mixing valve 115, and by the drive signal 126 from the controller 109,
The temperature of the hot water supply 110 is adjusted to the set temperature.
The drive side of the mixing valve 115 has an O-ring 11 to prevent water leakage.
6 is provided. 117 is a mixer section for a mixing valve 11
It is provided in the downstream of 5. Reference numeral 123 denotes a rotary blade, which is provided downstream of the mixer 117. The controller 1 outputs the flow rate signal 119 from the hot water amount sensor 121 opposite to the rotary blade 123.
09 is transmitted. Also, after mixing hot water, hot water supply sensor 122
Is transmitted to the controller 109 as a temperature signal 120.

FIG. 3 is a sectional view taken along line AA of FIG.

In FIG. 3, reference numeral 129 is a mixing portion of hot water and water, and the mixing portion 129 has a cylindrical shape of a lower opening and a bottom, and has openings 127A and 128 facing the tangent line in the same turning direction.
A is provided. The openings 127A and 128A communicate with the water passage 127 and the hot water passage 128, respectively. In addition, one or a plurality of mixing protrusions 129 may be provided inside the mixing unit 129.
A is provided. The optimum position and the optimum size of the mixing protrusion 129A are determined according to the amount of water to be treated and the size of the mixing unit 129.

Next, the operation of the embodiment of the present invention will be described.

Water and hot water flow into the mixing section 129 through the openings 127A and 128A while swirling. The swirling flow of hot water and water is divided into smaller vortices by the mixing projections 129A, and then small vortices of water and small vortices of hot water come into contact with each other and are mixed to a uniform temperature in an extremely short time. The comfort can be obtained and the mixing efficiency of water and hot water can be improved.

[0015]

The first effect of the present invention is that an extremely short time (m
In this case, the length of the mixing part can be shortened and the size can be reduced because the complete mixing can be performed within the order (s order). The second effect of the present invention is that by appropriately selecting the shape and number of the mixing projections, it is possible to obtain a mixing section that is suitable for a hot and cold water mixing plug and has a small pressure loss.

As described above, the effects of the present invention are extremely great in that the comfort can be ensured in the hot water supply system and the burns due to hot water can be prevented.

[Brief description of drawings]

FIG. 1 is a system diagram of a hot and cold water mixer showing an embodiment of the present invention.

FIG. 2 is a sectional view of a hot and cold water mixer showing an embodiment of the present invention.

FIG. 3 is a cross-sectional view taken along the line AA of FIG. 2 (cross-sectional view of the mixing portion).

FIG. 4 is a cross-sectional view of a hot water mixer showing a conventional example.

FIG. 5 is a cross-sectional view of a hot and cold water mixer showing another conventional example.

[Explanation of symbols]

 109 Controller 115 Mixing valve 127A Opening 128A Opening 129 Mixing part 129A Mixing protrusion

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Katsuhiro Yamazaki 1-3, Shinjuyoji, Kashiwa-shi, Chiba 1

Claims (1)

Claims: 1. A controller for controlling hot water supply temperature and hot water supply flow rate (1
09) and a mixing valve (115) controlled by the controller (109),
A mixing section (12) for mixing hot water and water supplied from the mixing valve (115).
9) In a hot water mixer having and, the mixing section (129)
Is characterized in that hot water and water openings (128A) and (127A) are respectively provided in the mixing section (129) in the same swirling direction, and a mixing projection (129A) is provided in the mixing section (129). Mixer.