JP2007277872A - Hot and cold water mixing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a small hot and cold water mixing device capable of surely mixing high temperature water with water. <P>SOLUTION: An agitating mixing body 14 is arranged in a mixing chamber 15 for mixing hot water flowing in from a hot water inflow port 10 of a device body 4 with water flowing in from a water inflow port 11, and hot and cold water outflow ports 12 and 13 for making the mixed hot and cold water flow out, are arranged on this downstream side. The agitating mixing body 14 is constituted by integrally arranging an agitating blade 18 on the downstream side of a cylinder part 17 forming a plurality of slit holes 16 on a peripheral wall. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a hot and cold water mixing device for mixing hot water from a hot water supply source and tap water and supplying the mixed water to a hot water supply terminal, for example.

  For example, in a heat pump type water heater, hot water of 80 ° C. to 90 ° C. is stored in a hot water storage tank, and this hot water and tap water are mixed at the time of actual hot water supply. It was intended to be supplied to (such as currants, bathtubs or heating radiators).

  FIG. 6 shows a basic structure of a conventional hot and cold water mixing device. A hot water inlet 52 from a hot water supply source is provided at one end of a cylindrical device main body 51, and a water inlet 53 such as tap water is provided at the upstream side of the peripheral wall. The hot water from the hot water inlet 52 and the water from the water inlet 53 are mixed in the internal mixing chamber 54 and sent out from the other end on the downstream side and the hot water outlets 55 and 56 on the peripheral walls. It was like that.

The hot water outlets 55 and 56 are provided with temperature sensors 57 and 58, respectively, and the amount of hot water from the hot water inlet 52 and / or the amount of water from the water inlet 53 is controlled based on the detection result. Hot water at a desired temperature is supplied (for example, see Japanese Patent Application Laid-Open No. 5-118572).
JP-A-5-118572

  However, in such a hot and cold water mixing device, mixing is performed in the mixing chamber 54 only by the difference in the different inflow directions of hot water from the hot water inlet 52 and water from the water inlet 53. Unevenness is likely to occur in the hot water temperature supplied from the water outlets 55 and 56. Therefore, temperature sensors 57 and 58 must be provided at the hot water outlets 55 and 56, respectively.

  Further, if mixing is sufficiently performed, the apparatus main body 51 having a large length is required, which is inconvenient in terms of construction.

  The present invention solves such a conventional problem, and provides a hot and cold water inlet and a hot and cold water mixing device that ensures mixing of hot water and tap water flowing in from the water inlet and promotes downsizing of the main body of the device. It is something to try.

  In order to achieve the above object, the hot and cold water mixing apparatus of the present invention has a mixing chamber for mixing hot water flowing in from the hot water inlet and water flowing in from the water inlet, and is provided with a hot water outlet from which the hot water after mixing flows out. The apparatus main body and a stirring mixture disposed in the mixing chamber are provided, and hot water flowing in from the hot water inlet and water flowing in from the water inlet are forcibly mixed in the mixing chamber via the stirring mixture, It is made to flow out from the water outlet and can improve the mixing of hot water and water.

  The hot and cold water mixing apparatus of the present invention ensures mixing of hot water and water, can provide hot water at a desired temperature, and the apparatus itself can be downsized.

  The hot and cold mixing device of the present invention has a mixing chamber for mixing hot water flowing in from the hot water inlet and water flowing in from the water inlet, and an apparatus main body provided with a hot water outlet from which the hot water after mixing flows out, A stirring mixture disposed in the mixing chamber, and the hot water flowing in from the hot water inlet and the water flowing in from the water inlet are forcibly mixed in the mixing chamber through the stirring mixture and then flowed out from the hot water outlet. I made it.

  As a form for implementing this, the inflow direction is set so that the hot water flowing in from the hot water inlet and the water flowing in from the water inlet intersect with the mixing chamber, and stirring and mixing is performed downstream of the intersecting portion. The body is placed.

  Therefore, the hot water flowing in from the hot water inlet and the water flowing in from the water inlet are first premixed at the intersection thereof, and then forcedly mixed through the stirring mixture.

  The stirring mixture has a plurality of stirring blades. Also, one of the hot water inlet and the water inlet is formed in the longitudinal direction of the cylindrical device body, and the other is formed in the diameter direction so that the hot water flowing in from the hot water inlet and the water flowing in from the water inlet are mixed. The stirring mixture is set so as to intersect with each other in the chamber, and the stirring mixture is constituted by a cylindrical portion and a stirring blade located on the downstream side of the cylindrical portion. A plurality of slit holes through which hot water or water passes were formed in the peripheral wall of the part.

  Therefore, hot water or water travels in the center direction from the plurality of slit holes and collides and mixes, and then is further forcibly mixed by the stirring blades.

  Instead of the slit hole, the peripheral wall of the cylindrical portion may be positioned at a distance from the mixing chamber wall, and either hot water or water may flow into the cylindrical portion via this interval.

  Preferably, if the cylindrical portion of the stirring mixture and the stirring blade are integrally formed, it will be advantageous in terms of assembly.

  Embodiments will be described below with reference to the accompanying drawings. Note that the present invention is not limited to the present embodiment.

(Embodiment 1)
1 to 3, the overall hot water supply system will be described. Water flowing in a water supply channel 1 such as a water supply is heated by a heat exchanger 3 heated by a heat source, for example, a burner 2, and hot hot water. The hot water mixing device 4 is reached, and the water channel 5 branched from the middle of the water supply channel 1 is also connected to the hot water mixing device 4.

  Hot water having a desired temperature in the hot water / water mixing device 4 is supplied to a hot water supply path 6 for a kitchen, a washroom, a bathroom, etc., a heat exchanger 7 for bath preparation, a heat exchanger 8 for hot water heating (collectively, hot water supply) Terminal). Among the hot water supply terminals, the return path from the heat exchanger 7 for bath preparation and the heat exchanger 8 for hot water heating is circulated to the heat exchanger 3 again. Of course, in this case, to the upstream side of the water supply path 1 There is also a backflow prevention means.

  The hot and cold mixing device 4 includes a hot water inlet 10 serving as an inlet for high-temperature water from the heat exchanger 3 on the upstream end and a peripheral wall of a cylindrical device body 9, and a water flow serving as an inlet for water from the water channel 5 on the peripheral wall. The inlet 11 is formed with hot water outlets 12 and 13 serving as outlets of hot water having a desired temperature on the other end on the downstream side and the peripheral wall, and the stirring mixture 14 is disposed inside. ing.

  One hot water outlet 13 is connected to the bath-heating heat exchanger 7 and the hot water heater 8, and the other hot water outlet 12 is connected to the hot water supply path 6.

  Inside the apparatus main body 9, a mixing chamber 15 is formed in which hot water flowing in from the hot water inlet 10 and water flowing in from the water inlet 11 are mixed, and the agitated mixture 14 is disposed here. .

  The stirring mixture 14 has a configuration in which a stirring blade 18 is integrally provided on the downstream side of a cylindrical portion 17 in which a plurality of slit holes 16 are formed in a peripheral wall. A temperature sensor 19 is provided on the downstream side of the stirring mixture 14.

  In the above configuration, the hot water from the heat exchanger 3 flows in the longitudinal direction from the hot water inlet 10 of the apparatus body 9 to the mixing chamber 15, while the water from the water channel 5 passes through the water inlet 11 to the stirring mixture 14. It flows in the center direction of the mixing chamber 15 through the slit hole 16. Due to the difference in the flow direction, the high-temperature water and water are premixed in the mixing chamber 15 and then forcibly mixed by the stirring blade 18 to obtain hot water having a desired temperature with no temperature unevenness.

  Therefore, the temperature sensor 19 accurately detects the hot water temperature to each supply terminal, that is, a curan such as a kitchen, a washroom, and a bathroom, a heat exchanger 7 for bath preparation, and a heat exchanger 8 for hot water heating. 2 combustion output can be controlled.

  The heat source of the heat exchanger 3 is not limited to the burner 2, and other heat sources such as those based on electric heat and heat pumps based on a refrigerant circuit are conceivable.

(Embodiment 2)
4 and 5 show a second embodiment of the present invention, and the same reference numerals are given to configurations that perform the same operations as those in the first embodiment, and those in the first embodiment are used for the detailed description.

  A different point from Embodiment 1 is demonstrated. The stirring mixture 20 of the hot and cold mixing device 4 has a configuration in which a stirring blade 22 is integrally provided on the downstream side of a cylindrical portion 21 whose peripheral wall is non-porous, and a water inlet is provided on the outer periphery of the cylindrical portion 21. An interval 21 in which water flowing in from 11 flows is set.

  Therefore, the water rising in the interval 21 is combined with the high-temperature water flowing in from the hot water inlet 10 and premixed, and then forcibly mixed by the stirring blade 18, and the hot water having a desired temperature with no temperature unevenness. It becomes.

  According to the first and second embodiments, high-temperature water and water can be reliably mixed, and only one temperature sensor 19 needs to be provided, and the entire apparatus can be downsized.

  As described above, the hot and cold water mixing device according to the present invention is a device that reliably mixes hot water and water, can obtain hot water of a desired temperature, and can be downsized. It can be used for hot water supply systems.

Whole hot water supply system conceptual diagram in Embodiment 1 of the present invention Cross section of the hot water mixing device (A) is a perspective view of the apparatus main body of the hot water mixing apparatus, (b) is a perspective view of a stirring mixture. Sectional drawing of the hot water mixing apparatus in Embodiment 2 of this invention Cross section of the stirring mixture Sectional view of a conventional hot water mixing device

Explanation of symbols

DESCRIPTION OF SYMBOLS 4 Hot water mixing apparatus 10 Hot water inlet 11 Water inlet 12, 13 Hot water outlet 14 Stirring mixture 15 Mixing chamber 16 Slit hole 17, 21 Tube part 18 Stirring blade 22 Space | interval

Claims (6)

An apparatus main body having a mixing chamber for mixing hot water flowing in from the hot water inlet and water flowing in from the water inlet, and provided with a hot water outlet through which the hot water after mixing flows out, and stirring and mixing disposed in the mixing chamber A hot water mixing apparatus that forcibly mixes hot water flowing in from a hot water inlet and water flowing in from a water inlet in a mixing chamber through a stirring mixture and then flows out from the hot water outlet. The hot and cold water mixing apparatus according to claim 1, wherein the inflow direction is set so that hot water flowing in from the hot water inlet and water flowing in from the water inlet intersect with the mixing chamber. The hot and cold water mixing apparatus according to claim 1, wherein the stirring mixture has a plurality of stirring blades. One of the hot water inlet and the water inlet is formed in the longitudinal direction of the cylindrical device body, and the other is formed in the diameter direction, and the hot water flowing in from the hot water inlet and the water flowing in from the water inlet are mixed in the mixing chamber. The agitating mixture is set so as to intersect with each other, and the agitating mixture is arranged at the intersecting portion. The agitating mixture is constituted by a cylindrical portion and an agitating blade located on the downstream side of the cylindrical portion. The hot and cold water mixing apparatus according to claim 1, wherein the peripheral wall is formed with a plurality of slit holes through which hot water or water passes. One of the hot water inlet and the water inlet is formed in the longitudinal direction of the cylindrical apparatus body, and the other is formed in the diameter direction, and the hot water flowing in from the hot water inlet and the water flowing in from the water inlet are mixed in the mixing chamber. The agitating mixture is set so as to intersect with each other, and the agitating mixture is arranged at the intersecting portion. The agitating mixture is constituted by a cylindrical portion and an agitating blade located on the downstream side of the cylindrical portion. The hot / cold water mixing apparatus according to claim 1, wherein the peripheral wall is positioned at a distance from the mixing chamber wall, and one of hot water or water flows into the cylindrical portion through the gap. The hot and cold water mixing apparatus according to claim 4 or 5, wherein the cylindrical portion of the stirring mixture and the stirring blade are integrally formed.