JP4640105B2 - Hot water mixing valve - Google Patents

Description

  The present invention relates to a hot and cold mixing valve that mixes hot water and the like, and more particularly, to a hot and cold mixing valve that has three inlets and mixes and flows out three fluids.

  Conventionally, as this kind of hot and cold water mixing valve, there are three inlets, a valve body having one outlet, and three openings that are rotatably arranged in the valve body and communicate with the three inlets, respectively. There is a mixing valve that mixes fluid flowing in from three inflow ports while continuously changing the mixing ratio and flows out from one outflow port (see, for example, Patent Document 1).

JP 2003-21246 A (page 3-5, FIGS. 1-4)

  By the way, the mixing valve of the said structure WHEREIN: The said valve body has the 1st opening selectively connected to the said 1st inflow port and the 3rd inflow port, and the 2nd opening connected to the said 2nd inflow port. And when the valve body is rotated, the communication area gradually decreases from the state where the first inlet and the first opening communicate with each other, and the communication area between the second inlet and the second opening. Gradually increases, and the communication area between the second inlet and the second opening decreases after the second inlet and the second opening communicate with each other, and the third inlet and the third inlet The communication area of the first opening gradually increases, and the third inflow port and the first opening are in communication with each other, and three openings must be provided in the valve body with a predetermined phase shifted. In addition, the structure of the valve body is complicated and the axial dimension is slightly longer, which reduces the installation space. There is a problem that is small. Further, the fluid flowing in from the third inlet near the outlet flows out from the outlet without being well mixed with the fluid flowing in from the first inlet or the fluid flowing in from the second inlet, There was a problem that the mixing efficiency in the valve body was poor.

  The present invention has been made in view of such problems, and the object of the present invention is that the structure of the valve body is not complicated, the axial dimension can be shortened, and the installation space can be reduced. An object of the present invention is to provide a hot and cold water mixing valve which is large and can improve the mixing efficiency in the valve body.

The hot and cold water mixing valve according to the present invention includes a valve main body having three inlets, one outlet, and a valve body rotatably disposed in the valve main body, and flows in from the three inlets. A hot and cold mixing valve for mixing fluid and flowing out from the one outlet, wherein the valve body is arranged such that two of the three inlets face each other, and the remaining one inlet Is arranged on the same side as one of the two opposite inlets, and of the two inlets arranged on the same side, the inlet located on the outlet side is a counterflow outlet. The valve body has two openings that can communicate with the three inlets of the valve body, and rotates the valve body in a certain direction. by, any one fluid of the three fluid flowing from said three inlets Selecting one of the fluid flowing in from the remaining one inlet and the fluid flowing in from the two opposing inlets, and mixing them while changing the mixing ratio, It is characterized by being able to flow out from the outlet .

  According to the hot and cold water mixing valve of the present invention, the valve body corresponds to the three inlets provided in the valve body with two openings, so that the structure of the valve body is not complicated and the manufacturing accuracy varies. It is possible to provide a hot and cold water mixing valve that does not occur, can reduce the axial dimension, can further reduce the size of the valve body and the valve body, and can greatly reduce the installation space. Of the two inlets arranged on the same side of the valve body, the inlet arranged on the outlet side is arranged with a predetermined inclination angle θ toward the counter-flow outlet side. Therefore, the fluid flowing in from the inlet close to the outlet flows in toward the inner side of the valve body, and the mixing efficiency in the valve body can be improved.

Embodiment 1.
Hereinafter, Embodiment 1 of the hot and cold water mixing valve according to the present invention will be described in detail with reference to the drawings.
FIG. 1 is a longitudinal sectional view of a hot and cold water mixing valve according to Embodiment 1, and FIGS. 2A and 2B are a sectional view taken along line AA and a sectional view taken along line BB in FIG.
1 and 2, a hot and cold water mixing valve 1 includes a valve body 2 and a valve body 3 that is rotatably disposed in the valve body 2. The valve body 2 includes a first inlet 4, a second inlet 2, and a second inlet 2. It has an inflow port 5, a third inflow port 6, and one outflow port 7. The valve body 2 is formed into a cylindrical shape that opens downward by metal casting, plastic molding, or the like, and the fluid that has entered through the three inflow ports 4, 5, and 6 flows out from the outflow port 7 of the lower opening.

  On the outer periphery of the first inlet 4, the second inlet 5, the third inlet 6, and the outlet 7, mounting portions 4a, 5a, 6a, and 7a for attaching pipes are formed. The valve body 3 fitted inside the valve body 2 has a shaft portion 8 that integrally rotates so as to rotate the valve body 3, and the upper end of the shaft portion 8 is externally provided from the upper opening of the valve body 2. And is driven by a driving device (not shown) or the like. The shaft portion 8 is kept waterproof from the valve body 2 by the packings 10 and 11 via the spacers 9. The spacer 8 is sandwiched by a lid 13 attached to the valve main body 2 by a screw 12 and is configured not to leak water.

  The first inlet 4, the second inlet 5, and the third inlet 6 are provided from the valve body 2 in the horizontal direction in FIG. 1, that is, in the direction orthogonal to the cylindrical axial direction. The first inlet 4 is formed on one side of the valve body 2, that is, on the right side in FIG. 1, and the second inlet 5 is spaced from the first inlet 4 by a predetermined distance. 7 is formed on the right side. Further, the second inlet 5 close to the outlet 7 has a predetermined inclination angle θ (30 degrees in this example, but can be set at 25 to 45 degrees) toward the counter-flow outlet. Has been placed. The third inlet 6 is formed on the other side of the valve body 2, that is, on the upper left side, corresponding to the first inlet 4. In this way, the first inlet 4 and the second inlet 5 are formed with a predetermined interval in the vertical direction, and the second inlet 5 close to the outlet 7 faces the counter-flow outlet side. Since the third inlet 6 is formed to correspond to the first inlet 4 on the opposite side by 180 degrees, the valve body 2 can be further reduced in size. At the same time, since the attachment portions 4a, 5a, and 6a of the respective inlets 4, 5, and 6 do not approach, piping work can be easily performed.

  On the other hand, the valve body 3 has a cylindrical shape in contact with the inner surface of the valve body 2 and is formed by metal casting, plastic molding or the like, and faces the first inlet 4 and the third inlet 6 of the valve body 2. The first opening 14 that can communicate with the second inlet 15 and the second opening 15 that can communicate with the second inlet 5 are shifted by 90 degrees. In other words, in this example, the second opening 15 is formed with a deviation of about 90 degrees counterclockwise as shown in FIG. 2B with respect to the first opening 14. Then, by rotating the valve body 3, the first and second openings 14 and 15 are sequentially communicated with the first inlet 4, the second inlet 5, and the third inlet 6, respectively. Has been placed. A lower portion of the valve body 3 is opened, and is an outflow opening 16 facing the outflow port 7. 1 and 2 show a state in which the first inflow port 4 and the first opening 14 are opposed to each other.

  In this example, as shown in FIG. 2 (a), when the first inflow port 4 and the first opening 14 are 100% opposite to each other and communicate with each other, as shown in FIG. 2 (b). The second inlet 5 and the second opening 15 are set so as not to communicate with each other, but the second inlet 5 and the second opening 15 are set so as to slightly communicate with each other and overlap. May be switched.

The mixing operation of the hot and cold mixing valve 1 of the first embodiment configured as described above will be described with reference to FIGS.
In the hot water mixing valve 1, for example, normal tap water (first fluid) is supplied to the first inlet 4, and medium-temperature water (second fluid) is supplied from the water heater to the second inlet 5. Hot water (third fluid) from the hot water heater is supplied to the third inlet 6, and piping is provided so as to supply hot water for hot water supply and floor heating from the outlet 7, and the shaft portion 12 is rotated. By making it low temperature water, medium temperature water, and high temperature water can be mixed and it can flow out.

  In the state of FIG. 2, the upper first inlet 4 and the first opening 14 communicate with each other, and the second inlet 5 and the third inlet 6 communicate with the first opening 17 and the second opening 15. First, tap water flows in from the first inlet 4 and flows out from the outlet 7. When the valve body 3 is rotated about 45 degrees clockwise from the state shown in FIG. 2, the state shown in FIG. 3 is obtained, and the first inlet 4 and the first opening 14 communicate with each other about half, and the second inlet 5 And the second opening 15 communicate with each other about half, and the third inlet 6 does not communicate with the first opening 14. The state of FIG. 3 is a state in which tap water flowing in from the first inlet 4 and medium temperature water flowing in from the second inlet 5 are mixed and flow out from the outlet 7.

  While the valve body 3 is rotated from the state of FIG. 2 to the state of FIG. 3, the amount of tap water flowing from the first inflow port 4 gradually decreases corresponding to the rotation angle of the valve body 3. Since the amount of intermediate temperature water flowing from the second inlet 5 gradually increases, the mixing ratio can be gradually changed continuously. In the state of FIG. 3, substantially the same amount of fluid flows into the valve body 3 from the first inlet 4 and the second inlet 5 and flows out from the outlet 7 through the outlet opening 16.

  When the valve body 3 is further rotated about 45 degrees clockwise from the state of FIG. 3, the state of FIG. 4 is obtained, the first inlet 4 does not communicate with the first opening 14, and the second inlet 5 The third inflow port 6 communicates with the second opening 15 and does not communicate with the first opening 14. In the state of FIG. 4, medium-temperature water flows only from the second inflow port 5, and only medium-temperature water flows out from the outflow port 7.

  While the valve body 3 is rotated from the state of FIG. 3 to the state of FIG. 4, the amount of tap water flowing from the first inflow port 4 further gradually decreases corresponding to the rotation angle of the valve body 3. In addition, since the amount of the intermediate temperature water flowing from the second inlet 5 further gradually increases, the mixing ratio of the intermediate temperature water can be gradually increased. In the state of FIG. 2 flows in from the inlet 5 and flows out from the outlet 7 through the outlet 16.

  When the valve body 3 is further rotated about 45 degrees from the state shown in FIG. 4, the state shown in FIG. 5 is obtained. The first inlet 4 does not communicate with the first opening 14, and the second inlet 5 is the second opening. 15, the third inlet 6 communicates with the first opening 14. The state shown in FIG. 5 is a state in which medium-temperature water flowing in from the second inflow port 5 and hot water flowing in from the third inflow port 6 are mixed and flow out from the outflow port 7.

  While the valve body 3 is rotated from the state of FIG. 4 to the state of FIG. 5, the amount of the warm water flowing from the second inflow port 5 gradually decreases corresponding to the rotation of the valve body 3. Since the amount of high-temperature water flowing in from the third inlet 6 gradually increases, the mixing ratio can be changed gradually and continuously. In the state of FIG. 5, substantially the same amount of fluid flows into the valve body 3 from the second inlet 5 and the third inlet 6 and flows out from the outlet 7 through the outlet opening 19.

  When the valve body 3 is further rotated about 45 degrees clockwise from the state of FIG. 5, the state of FIG. 6 is obtained, the first inlet 4 does not communicate with the first opening 14, and the second inlet 5 The second opening 15 is not communicated, and only the third inlet 6 is in communication with the first opening 14. In the state of FIG. 6, high-temperature water flows only from the third inflow port 6 and only high-temperature water flows out from the outflow port 7.

  While the valve body 3 is rotated from the state of FIG. 5 to the state of FIG. 6, the amount of intermediate warm water flowing from the second inlet 5 further gradually decreases in accordance with the rotation angle of the valve body 3. In addition, since the amount of low-temperature water flowing in from the third inlet 6 further gradually increases, the mixing ratio of low-temperature water can be gradually increased continuously while reducing the medium-temperature water. In the state of FIG. Only low-temperature water flows into the valve body 3 from the third inlet 6 and flows out of the outlet 7 through the outlet opening 16.

  When the desired temperature of the warm water exiting from the outlet 7 is lower than the desired temperature of the warm water exiting from the outlet 7, the position of the valve body 3 is set so as to mix the intermediate warm water and the low temperature water as shown in FIG. 4 is set at an arbitrary position, and the mixing ratio is set. If the temperature of the second inlet 5 is higher than the medium temperature water, the position of the valve body 3 is set to an arbitrary position in FIGS. 4 to 6 so as to mix the high temperature water and the medium temperature water, and the mixing ratio is set. To do. In this way, since the medium-temperature water supplied from the water heater to the second inlet 5 can be actively used, the medium-temperature water in the water heater can be used effectively. Of the first inflow port 4 and the second inflow port 5 disposed on the same side of the valve body 2, the second inflow port 5 disposed on the outflow port 7 side is on the counterflow outlet side. Is disposed at a predetermined inclination angle θ, the medium-temperature water flowing in from the second inlet 5 close to the outlet 7 flows toward the back side of the valve body 2, and the valve In the main body 2, it mixes well with the tap water from the 1st inflow port 4 or the high temperature water from the 3rd inflow port 6, and the mixing efficiency in the valve body 2 improves.

  In the above-described first embodiment, examples of tap water and hot water are shown as fluids. However, the fluid can be used for switching a refrigerant used in an air conditioner or the like. Moreover, although the valve body 3 showed the example of the cylinder shape, of course, it is good also as valve bodies, such as a spherical form. The shaft portion 8 that rotates the valve body 3 may be configured to be rotated by, for example, an electric mechanism that combines a motor and a gear. And the rotation angle of the valve body 8 may be controlled via an electric mechanism so that the temperature and density | concentration of the mixed fluid are detected and it can mix with desired temperature and density | concentration. Even in the case of automatic control as described above, since only one shaft portion is rotated, the control can be easily performed.

Embodiment 2. FIG.
Next, Embodiment 2 of the hot and cold water mixing valve according to the present invention will be described.
FIG. 7 is a longitudinal sectional view of the hot and cold water mixing valve according to the second embodiment.
In FIG. 7, since the basic structure of the hot and cold water mixing valve 1 is substantially the same as that of the first embodiment, only different parts will be described.
In the hot and cold water mixing valve 1 according to the second embodiment, the first inlet 4 is formed on the right side of the lower part of the valve body 2, that is, at a position close to the outlet 7, and the second inlet 5 is the first. It is formed on the right side of the upper part with a space from the inlet 4. And the 1st inflow port 4 near the said outflow port 7 is arrange | positioned with the predetermined inclination | tilt angle (theta) toward the counterflow exit side. The third inflow port 6 is formed on the other side of the valve main body 2 corresponding to the first inflow port 4, that is, the lower part on the left side. On the other hand, the valve body 3 can communicate with the first opening 14 that can communicate with the first inflow port 4 and the third inflow port 6 of the valve body 2 and with the second inflow port 5. The second openings 15 are formed with a 90 degree phase shift. In other words, in this example, the first opening 14 is formed with a shift of about 90 degrees counterclockwise with respect to the second opening 15.

  In the second embodiment, the first inlet 4 is arranged with a predetermined inclination angle θ toward the counterflow outlet. Even in this configuration, the same effects as in the first embodiment are provided. Can be obtained.

BRIEF DESCRIPTION OF THE DRAWINGS The longitudinal cross-sectional view which shows Embodiment 1 of the hot-water / water mixing valve concerning this invention. (A) is the sectional view on the AA line of FIG. 1, (b) is the sectional view on the BB line of FIG. Sectional drawing which shows the operation state rotated about 45 degree | times from the state of FIG. Sectional drawing which shows the operation state which further rotated about 45 degree | times from the state of FIG. Sectional drawing which shows the operation state which further rotated about 45 degree | times from the state of FIG. Sectional drawing which shows the operation state which further rotated about 45 degree | times from the state of FIG. The longitudinal cross-sectional view which shows Embodiment 2 of the hot and cold water mixing valve according to the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Hot water mixing valve, 2 Valve main body, 3 Valve body, 4 1st inflow port, 5 2nd inflow port, 6 3rd inflow port, 7 Outflow port, 8 Shaft part, 9 Spacer, 10, 11 Packing, 12 screw, 13 lid, 14 1st opening, 15 2nd opening, 16 outflow opening.

Claims (2)

A valve body having three inlets and one outlet, and a valve body rotatably disposed in the valve body, and mixing the fluid flowing in from the three inlets to A hot and cold water mixing valve flowing out from the outlet,
The valve body is arranged such that two of the three inlets face each other, and the remaining one inlet is arranged on the same side as one of the two opposite inlets, Of the two inlets arranged on the same side, the inlet arranged on the outlet side is arranged with a predetermined inclination angle toward the counter-flow outlet side , and the valve body is Two openings that can communicate with the three inlets of the valve main body, and by rotating the valve body in a certain direction, any of the three fluids flowing in from the three inlets Mix one fluid alone, or select either one of the fluid flowing in from the remaining one inlet and one of the fluids flowing in from the two opposing inlets while changing the mixing ratio and a characterized in that a can flow from the outlet port Hot and cold water mixing valve that. The valve body includes a first opening that selectively communicates with two of the three inlets, and a second opening that communicates with the remaining one inlet, and the valve body is in a certain direction. Of the three inlets, only one of the two opposing inlets communicates, one of the opposing inlets communicates with the remaining one inlet, the remaining Only one inlet is in communication, and the other inlet of the two opposite inlets is only in communication with the other inlet of the two inlets opposite to the remaining one inlet. Any one of the three fluids flowing in from the three inlets can be continuously performed until they communicate with each other , or any one of the two fluids flowing in from the remaining one inlet can be opposed to the two fluids. One of the fluids flowing in from the two inlets Were mixed while changing the mixing ratio by selecting a fluid, the hot and cold water mixing valve according to claim 1, characterized in that a can flow from the outlet.

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