JP2019141816A - Fluid mixer - Google Patents

Abstract

To provide a fluid mixer improved in mixing performance in a mixing part.SOLUTION: The fluid mixer comprises a cylindrical mixing part, a first connecting part for introducing first fluid into the mixing part, a second connecting part for introducing second fluid into the mixing part, and an outlet part for exhausting fluid mixed in the mixing part, where the first connecting part is provided at a wall part at one end side of the mixing part, the outlet part is provided at a wall part at the other end side of the mixing part, and the second connecting part is provided at a cylindrical wall part of the mixing part. The first connecting part and the second connecting part are arranged so that a shaft line of the first connecting part and a shaft line of the second connecting part are at twisted positions, and the first connecting part and the outlet part are arranged at positions where the shaft line of the first connecting part and the shaft line of the outlet part do not match with each other.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a fluid mixing device provided in a hot water supply device or the like for mixing high-temperature water and low-temperature water, and more particularly to a fluid mixing device capable of improving mixing properties.

  2. Description of the Related Art Conventionally, a fluid mixing device that adjusts and mixes a mixing ratio of high-temperature water and low-temperature water so as to have a set temperature for hot water supply has been widely used for hot water supply devices and the like. Adjustment of a mixing ratio is performed based on the temperature of high temperature water and low temperature water, and the temperature of the mixed water mixed with the fluid mixing apparatus. Therefore, when the mixed water is not sufficiently mixed, it becomes difficult to adjust the temperature by adjusting the mixing ratio. For this reason, it is known to provide a long mixing section so that the flow path becomes long and to detect the temperature of the sufficiently mixed water.

  However, if a long mixing section is provided, the fluid mixing device becomes large and it becomes difficult to accommodate it in a hot water supply device or the like. Therefore, for example, as disclosed in Patent Document 1, a distribution valve that distributes low-temperature water to the heating means and the bypass passage is provided, and the high-temperature water from the heating means and the low-temperature water in the bypass passage are introduced and mixed into a small formed mixing portion. A hot and cold water mixing device is known.

Japanese Patent No. 5974252

  In the hot and cold water mixing apparatus of Patent Document 1, the mixing unit is formed so that mixing is performed at a position where the outlets of the high temperature water path and the outlets of the low temperature water path are orthogonal to each other. In addition, drift walls are installed at the outlet of the hot water path and the outlet of the low temperature water path, respectively. Therefore, the water flow resistance of this hot and cold water mixing device is increased, and when the mixing ratio is changed, particularly when one is a mixing ratio that is sufficiently smaller than the other, the inflow into the mixing section with the smaller mixing ratio. May be prevented and sufficient mixing in the mixing section may not be performed. Moreover, there exists a possibility that the flow volume of mixed water cannot be enlarged because of a large water flow resistance.

  The objective of this invention is providing the fluid mixing apparatus which improved the mixing property in the mixing part.

  The invention of claim 1 includes a cylindrical mixing portion, a first connection portion for introducing a first fluid into the mixing portion, a second connection portion for introducing a second fluid into the mixing portion, An outlet portion for discharging the fluid mixed in the mixing portion is provided, the first connection portion is provided at one end side wall portion of the mixing portion, and the outlet portion is provided at the other end side wall portion of the mixing portion. In the fluid mixing device provided on the cylindrical wall portion of the mixing portion, the second connecting portion is configured so that the axis of the first connecting portion and the axis of the second connecting portion are twisted. The connecting portion and the second connecting portion are disposed, and the first connecting portion and the outlet portion are disposed at a position where the axis of the first connecting portion and the axis of the outlet portion do not coincide with each other. It is said.

  According to the above configuration, since the first connection portion and the second connection portion are not arranged coaxially with the outlet portion, the introduced first fluid and second fluid flow in the mixing portion without going straight to the outlet portion. Mix well between. In addition, since the axis of the first connecting portion and the axis of the second connecting portion are in a twisted position, one fluid does not hinder the introduction of the other fluid regardless of the mixing ratio. Therefore, the mixing property in the mixing part can be improved.

The invention of claim 2 is characterized in that, in the invention of claim 1, flow rate adjusting means for individually adjusting the flow rates of the first fluid and the second fluid is provided.
According to the above configuration, since the flow rate of the first fluid and the flow rate of the second fluid can be individually adjusted, the mixing ratio of the first fluid and the second fluid can be adjusted.

According to a third aspect of the present invention, in the first or second aspect of the present invention, the first connecting portion is configured such that the axis of the first connecting portion, the axis of the second connecting portion, and the axis of the outlet portion are in a twisted position. And the second connection portion and the outlet portion are provided.
According to the said structure, the flow of the 1st, 2nd fluid in a mixing part can be complicated, and mixing property can be improved.

  According to the fluid mixing device of the present invention, the mixing property of the first fluid and the second fluid introduced into the mixing unit can be improved.

1 is a perspective view illustrating an overall configuration of a fluid mixing apparatus according to Embodiment 1. FIG. 1 is a perspective view of a main body portion of a fluid mixing apparatus according to Embodiment 1. FIG. It is the perspective view which looked at the main-body part of the fluid mixing apparatus of FIG. 2 from another angle. 6 is a perspective view of a main body portion of a fluid mixing apparatus according to Embodiment 2. FIG. It is the perspective view which looked at the main-body part of the fluid mixing apparatus of FIG. 4 from another angle.

  Hereinafter, modes for carrying out the present invention will be described based on examples.

First, a hot water supply apparatus provided with the fluid mixing apparatus 10 of FIG. 1 will be briefly described.
In order to use hot water heated by heating means for hot water supply, the hot water supply device introduces the high temperature water and low temperature water (clean water) into the fluid mixing device 10 and supplies the hot water mixed to a hot water tap or the like. is there. For hot water supply at a desired temperature, the hot water supply device is configured to adjust the mixing ratio of high temperature water and low temperature water introduced into the fluid mixing device 10.

Next, the fluid mixing apparatus 10 will be described with reference to FIGS.
The fluid mixing device 10 includes a main body 11, a first flow rate adjustment valve 12, and a second flow rate adjustment valve 13. The main body 11 includes a cylindrical mixing portion 14, a first connecting portion 15 for introducing a first fluid into the mixing portion 14, and a first fluid for introducing a second fluid into the mixing portion 14. 2 connection part 16 and the exit part 17 for discharging | emitting the fluid mixed in the mixing part 14 are provided. The first connection portion 15, the second connection portion 16, and the outlet portion 17 are each formed in a cylindrical shape having a flange portion for connection with other members such as a flow rate adjusting valve and piping.

  The first connecting portion 15 has one end side wall portion 14a provided at one end portion in the axis L0 direction of the mixing portion 14, the axis L1 of the first connecting portion 15 is parallel to the axis L0 of the mixing portion 14, and the axis of the mixing portion 14 It is provided at a position offset from L0. The second connecting portion 16 is connected to the cylindrical wall portion 14b on the side of the one end side wall portion 14a from the center in the axis L0 direction of the mixing portion 14, and the axis L2 of the second connecting portion 16 is connected to the axis L0 of the mixing portion 14 and the first connecting portion. It is provided so as not to intersect the 15 axis L1. Accordingly, the first connection portion 15 and the second connection portion 16 are arranged so that the axis line L1 of the first connection portion 15 and the axis line L2 of the second connection portion 16 are in a torsional position relationship.

  The outlet portion 17 is provided at the central portion of the other end side wall portion 14c provided at the other end portion of the mixing portion 14 in the axis L0 direction so that the axis L3 of the outlet portion 17 coincides with the axis L0 of the mixing portion 14. Yes. Accordingly, the first connection portion 15 and the outlet portion 17 are disposed so that the axis L1 of the first connection portion 15 and the axis L3 of the outlet portion 17 are parallel but do not coincide with each other.

  The fluid mixing apparatus 10 includes a first flow rate adjustment valve 12 in the first connection portion 15 of the main body 11 and a second flow rate adjustment valve 13 in the second connection portion 16. The first flow rate adjusting valve 12 and the second flow rate adjusting valve 13 constitute a flow rate adjusting means for adjusting the flow rates of the first fluid and the second fluid. By adjusting the first flow rate adjusting valve 12 and the second flow rate adjusting valve 13, the mixing ratio of the first fluid and the second fluid mixed in the mixing unit 14 is adjusted.

  In the positional relationship in which the fluid mixing device 10 is installed, high temperature water is introduced from the higher position of the first connection portion 15 and the second connection portion 16, and low temperature water is introduced from the lower position. Therefore, the first fluid may be hot water and the second fluid may be hot water. This prevents mixing of the first fluid and the second fluid by natural convection in the mixing unit 14 when no fluid flows.

  In the fluid mixing apparatus 10 configured as described above, the first connection portion 15 and the second connection portion 16 are not coaxial with the outlet portion 17, so that the mixing portion 14 is along the axis L <b> 1 of the first connection portion 15. The introduced first fluid and the second fluid introduced along the axis L <b> 2 of the second connection portion 16 are sufficiently mixed while flowing in the mixing portion 14 without going straight to the outlet portion 17, and the outlet portion 17. To reach. For example, the second fluid flows toward the outlet portion 17 while flowing along the circumferential direction of the cylindrical wall portion 14b of the mixing portion 14, and the first fluid is introduced so as to merge with the flow of the second fluid. Even if the mixing ratio of the first fluid and the second fluid changes, these fluids do not go straight to the outlet portion 17. Further, since the axis L1 of the first connecting portion 15 and the axis L2 of the second connecting portion 16 are in a twisted position, the first fluid and the second fluid are mutually brought into the mixing portion 14 regardless of the mixing ratio. Does not prevent the introduction of.

  Therefore, mixing of the first fluid and the second fluid is promoted in the mixing unit 14, and sufficient mixing is performed until the fluid is discharged from the outlet unit 17, so that the mixing property in the mixing unit 14 is improved. Further, since the flow rate of the first fluid and the flow rate of the second fluid can be individually adjusted, the mixing ratio can be easily adjusted. In addition, since the first connection portion 15, the second connection portion 16, and the mixing portion 14 are not arranged to increase the water flow resistance, it is possible to cope with the discharge of the mixed fluid having a large flow rate.

A second embodiment in which the first embodiment is partially changed will be described. Parts equivalent to those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted.
As shown in FIGS. 4 and 5, the main body portion 11 </ b> A includes a mixing portion 14 formed in a cylindrical shape, a cylindrical first connection portion 15 for introducing a first fluid into the mixing portion 14, and mixing. A cylindrical second connection part 16 for introducing the second fluid into the part 14 and a cylindrical outlet part 17A for discharging the fluid mixed in the mixing part 14 are provided. Although not shown, the first connection portion 15 of the main body portion 11A includes a first flow rate adjusting valve 12 that adjusts the flow rate of the first fluid, and the second connection portion 16 includes a first flow rate adjusting valve that adjusts the flow rate of the second fluid. A two-flow regulating valve 13 is provided to constitute a fluid mixing device 10A.

  The first connecting portion 15 is provided on the one end side wall portion 14a of the mixing portion 14 at a position where the axis L1 of the first connecting portion 15 is parallel to the axis L0 of the mixing portion 14 and offset from the axis L0 of the mixing portion 14. ing. The second connecting portion 16 is connected to the cylindrical wall portion 14b on the side of the one end side wall portion 14a from the center in the axis L0 direction of the mixing portion 14, and the axis L2 of the second connecting portion 16 is connected to the axis L0 of the mixing portion 14 and the first connecting portion. It is provided so as not to intersect the 15 axis L1. Accordingly, the first connection portion 15 and the second connection portion 16 are arranged so that the axis line L1 of the first connection portion 15 and the axis line L2 of the second connection portion 16 are in a torsional position relationship.

  The outlet portion 17A is arranged at the central portion of the other end side wall portion 14c of the mixing portion 14 so that the axis L3A of the outlet portion 17A is inclined with respect to the axis L0 of the mixing portion 14 and the axis L1 of the first connecting portion 15. And it is provided so that it may not cross | intersect the axis line L2 of the 2nd connection part 16. FIG. Therefore, the first connecting portion 15 and the second connecting portion 16 are arranged such that the axis L1 of the first connecting portion 15, the axis L2 of the second connecting portion 16, and the axis L3A of the outlet portion 17A are in a twisted position. An outlet portion 17A is provided.

  The outlet portion 17A is in a torsional position relationship with the first connecting portion 15 and the second connecting portion 16, and the first connecting portion 15 is disposed at a position offset from the axis L0. Therefore, the first fluid introduced into the mixing portion 14 along the axis L1 of the first connection portion 15 and the second fluid introduced along the axis L2 of the second connection portion 16 are introduced into the outlet portion 17A. While flowing through the mixing portion 14 without going straight, the mixture is sufficiently mixed and reaches the outlet portion 17A.

  Further, since the axis L1 of the first connecting portion 15 and the axis L2 of the second connecting portion 16 are in a twisted position, the first fluid and the second fluid are mutually brought into the mixing portion 14 regardless of the mixing ratio. Does not prevent the introduction of. In addition, the outlet portion 17A arranged such that the axis L3A is inclined with respect to the axis L0 of the mixing portion 14 causes a deviation in the flow of the mixed fluid in the vicinity thereof, and the flow in the mixing portion 14 becomes complicated. And contribute to the promotion of mixing.

  Therefore, mixing of the first fluid and the second fluid is promoted in the mixing unit 14, and sufficient mixing is performed until the fluid is discharged from the outlet unit 17, so that the mixing property in the mixing unit 14 is improved. Further, since the flow rate of the first fluid and the flow rate of the second fluid can be individually adjusted, the mixing ratio can be easily adjusted. Furthermore, since what raises water resistance is not arrange | positioned at the 1st connection part 15, the 2nd connection part 16, and the mixing part 14, it can respond also to discharge | emission of the mixed fluid of a large flow volume.

A modified example in which the above embodiment is partially modified will be described.
[1] Although the example in which the outlet portion 17 (17A) is disposed in the central portion of the other end side wall portion 14c of the mixing portion 14 has been described, the axis L3 (L3A) of the outlet portion 17 (17A) is the above-described axis L1 and As long as the relationship with the axis L2 can be satisfied, the outlet portion 17 (17A) may be disposed at a position other than the central portion in the other end side wall portion 14c. For example, when the fluid mixing device 10 (10A) is installed in a posture in which the axis L0 of the mixing unit 14 is not vertical, the outlet 17 (17A) is placed at a position where the mixed fluid can be easily discharged from the mixing unit 14 at the other end side wall 14c. It can be arranged.

[2] Although the example in which the outlet portion 17A is disposed to be inclined with respect to the axis L1 of the mixing portion 14 in the second embodiment has been described, the first connection portion 15 is set to the axis L0 of the mixing portion 14 in the first embodiment. The first connecting portion 15, the second connecting portion 16, and the outlet portion 17 may be disposed so as to be in a twisted position relative to each other by being inclined with respect to the first connecting portion 15. Also in the second embodiment, the first connecting portion 15 is provided so as to be inclined with respect to the axis L0 of the mixing portion 14, whereby the first connecting portion 15, the second connecting portion 16, and the outlet portion 17A are twisted with respect to each other. You may arrange | position so that it may become.

  Those skilled in the art can implement the present invention by adding various modifications without departing from the spirit of the present invention, and the present invention includes such modifications.

DESCRIPTION OF SYMBOLS 10,10A: Fluid mixing apparatus 11, 11A: Main-body part 12: 1st flow regulating valve 13: 2nd flow regulating valve 14: Mixing part 14a: One end side wall part 14b: Cylindrical wall part 14c: Other end side wall part 15: First 1 connection part 16: 2nd connection part 17, 17A: outlet part L0: axis line L1 of mixing part: axis line L2 of first connection part: axis lines L3, L3A of second connection part: axis line of outlet part

Claims (3)

Mixed in the mixing unit, a cylindrical mixing unit, a first connection unit for introducing a first fluid into the mixing unit, a second connection unit for introducing a second fluid into the mixing unit An outlet for discharging fluid; the first connecting portion is provided at one end side wall portion of the mixing portion; the outlet portion is provided at the other end side wall portion of the mixing portion; and the second connecting portion is In the fluid mixing device provided on the cylindrical wall of the mixing unit,
The first connecting portion and the second connecting portion are disposed such that the axis of the first connecting portion and the axis of the second connecting portion are in a twisted position, and the axis of the first connecting portion and the The fluid mixing apparatus, wherein the first connecting portion and the outlet portion are disposed at a position where the axis of the outlet portion does not coincide with the axis line.   The fluid mixing apparatus according to claim 1, further comprising a flow rate adjusting unit that individually adjusts the flow rates of the first fluid and the second fluid.   The first connecting portion, the second connecting portion, and the outlet portion are disposed such that the axis of the first connecting portion, the axis of the second connecting portion, and the axis of the outlet portion are in a twisted position. The fluid mixing apparatus according to claim 1 or 2, wherein