JP2007113603A - Hot water/water mixing valve - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a hot water/water mixing valve for mixing three fluids while continuously changing its mixing ratio, capable of achieving miniaturization, simplifying piping work, and reducing an installation space. <P>SOLUTION: The hot water/water mixing valve is provided with a valve body 2 having three inflow ports and one outflow port, and a valve element 3 rotatably mounted in the valve body 2. In the valve body 2, the first inflow port 4 and the third inflow port 6 are arranged to confront with each other, the second inflow port 5 is arranged on the same side with the first inflow port 4 while having a space between the first inflow port 4 and it, and at least one of the first inflow port 4 and the second inflow port 5 is arranged to have a predetermined tilt angle θ to the direction narrowing the space. The valve element 3 is provided with two openings 14 and 15 capable of being communicated with the three inflow ports of the valve body 2, and the first fluid from the first inflow port 4, the second fluid from the second inflow port 5 and the third fluid from the third inflow port 6 are mixed while changing the mixing ratio by rotating the valve element 3 to the constant direction. <P>COPYRIGHT: (C)2007,JPO&INPIT

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 after the second inlet and the second opening communicate with each other, the communication area between the second inlet and the second opening decreases, and the third inlet and 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 other words, the structure of the valve body becomes complicated, causing variations in manufacturing accuracy, and the axial dimension is slightly longer. Runode, there is a problem that the effect of reducing the installation space is small.

  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 manufacturing accuracy does not vary, and the dimensions in the axial direction are not. The purpose of the present invention is to provide a hot and cold water mixing valve that can be made shorter and has a large effect of reducing the installation space.

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 water mixing valve that mixes fluid and flows out from the one outlet,
The valve body is disposed so that the first inlet and the third inlet face each other, and the second inlet is spaced apart from the first inlet and the first inlet Arranged at the same side as the inlet, and at least one of the first inlet or the second inlet is arranged with a predetermined inclination angle toward the direction of narrowing the interval, There are two openings that can communicate with the three inlets of the valve body, and by rotating the valve body in a certain direction, the first fluid flowing in from the first inlet and the second The second fluid flowing in from the inflow port is mixed while changing the mixing ratio, and the valve body is further rotated in a certain direction, whereby the second fluid flowing in from the second inflow port and the third fluid The third fluid flowing from the inflow port can be mixed while changing the mixing ratio. That.

  According to the hot and cold water mixing valve of the present invention, the valve body is disposed so that the first inlet and the third inlet face each other, and the second inlet is the first inlet. The at least one of the first inlet and the second inlet has a predetermined inclination angle toward the direction of narrowing the gap. On the other hand, with respect to the three inlets provided in the valve body, the valve body is provided 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.

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 upper 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 at the lower right side. It is formed on the side. Further, the second inlet has a predetermined inclination angle θ (30 degrees in this example, but can be set at 25 to 45 degrees) toward the direction of narrowing the distance from the first inlet 4. Are arranged. 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. Thus, the first inlet 4 and the second inlet 5 are formed with a predetermined interval in the vertical direction, and the second inlet narrows the interval with the first inlet 4. Since the third inflow port 6 is formed to correspond to the first inflow port 4 on the opposite side by 180 degrees, the valve main body 2 is further arranged. While being able to downsize, since the attachment parts 4a, 5a, and 6a of each inflow port 4,5,6 do not approach, piping work can be performed easily.

  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 communicate with the first inflow port 4, the second inflow port 5, and the third inflow port 6 sequentially. Has been placed. A lower portion of the valve body 3 is opened, and an outflow opening 16 facing the outflow port 7 is formed. 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 water 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 flowed 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. Note that the first inlet 4 and the first opening 14 may be formed as square holes so that the mixing ratio changes in proportion to the rotation angle of the valve body 3.

  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. In the state of FIG. 4, when the second inlet 5 and the second opening 15 are 100% opposite and coincide with each other, the first inlet 4 and the first opening 14 are set so as not to communicate with each other. However, it may be slightly communicated.

  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. As described above, the rotation angle and the mixing ratio may be proportional.

  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. In addition, in the state of FIG. 6, when the 3rd inflow port 6 and the 1st opening 14 are facing 100%, the 2nd inflow port 5 and the 2nd opening 15 are set so that it may not communicate. However, it may be slightly communicated.

  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 hot water flowing out from the outlet 7 is higher than the intermediate temperature water of the second inlet 5, the position of the valve body 3 is set to any one of FIGS. 4 to 6 so as to mix the high temperature water and the intermediate temperature water. Set to position and set mixing ratio. In addition, when the desired temperature of the warm water flowing out from the outlet 7 is lower than the medium temperature water, the position of the valve body 3 is set to an arbitrary position in FIGS. 2 to 4 so as to mix the medium temperature water and the low temperature water, Set the mixing ratio. 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.

  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.

  Thus, according to the hot and cold water mixing valve shown in the first embodiment, the valve body 2 is arranged so that the first inlet 4 and the third inlet 6 face each other, and the second inlet The inlet 5 is disposed on the same side as the first inlet 4 with a distance from the first inlet 4 and has a predetermined inclination toward the direction of narrowing the distance from the first inlet 4. On the other hand, the valve body 3 is provided with two openings 15 and 16 corresponding to the three inlets 4, 5 and 6 provided in the valve body 2. Since the structure of the body 3 is not complicated, the manufacturing accuracy does not vary, and the axial dimension can be further shortened, the valve body 2 and the valve body 3 can be further downsized, and the installation space can be reduced. Can provide large hot water mixing valve.

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 portion of the valve body 2, and the second inlet 5 is spaced from the first inlet 4. And is formed on the upper right side. The first inflow port 4 is disposed with a predetermined inclination angle θ toward the direction of narrowing the distance from the second inflow port 4. 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 ° 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 inflow port 4 is arranged with a predetermined inclination angle θ in the direction of narrowing the interval between the first inflow port 5 and the second inflow port 5. Similar to the first embodiment, the valve body 2 can be further reduced in size, and the mounting portions 4a, 5a, and 6a of the respective inlets 4, 5, and 6 do not approach each other, so that piping work can be easily performed.

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, 14 1st opening, 15 2nd opening, 16 Outflow Opening.

Claims (3)

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 disposed so that the first inlet and the third inlet face each other, and the second inlet is spaced apart from the first inlet and the first inlet Arranged at the same side as the inlet, and at least one of the first inlet or the second inlet is arranged with a predetermined inclination angle toward the direction of narrowing the interval, There are two openings that can communicate with the three inlets of the valve body, and by rotating the valve body in a certain direction, the first fluid flowing in from the first inlet and the second The second fluid flowing in from the inflow port is mixed while changing the mixing ratio, and the valve body is further rotated in a certain direction, whereby the second fluid flowing in from the second inflow port and the third fluid A hot and cold water mixing valve that can mix the third fluid flowing in from the inlet while changing the mixing ratio. The valve body includes a first opening selectively communicating with the first inlet and the third inlet, and a second opening communicating with the second inlet, and rotates the valve body. The communication area gradually decreases from the state where the first inlet and the first opening communicate with each other, the communication area between the second inlet and the second opening gradually increases, and the second After the state where the inflow port and the second opening communicate with each other, the communication area between the second inflow port and the second opening decreases, and the communication area between the third inflow port and the first opening gradually increases. The hot water / water mixing valve according to claim 1, wherein the hot water / water mixing valve is increased and the third inlet and the first opening are in communication with each other. The hot and cold water mixing valve according to claim 1 or 2, wherein an inclination angle of the first inlet or the second inlet is set to 25 to 45 degrees.

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