JP3782764B2 - Hot water supply adapter with hot water mixing valve - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an adapter connected to a hot water source such as an electric water heater, and more particularly to a hot water source adapter with a hot water mixing valve.
[0002]
[Prior art]
As shown in FIG. 5, when hot water (hot water) boiled by the hot water supply device 200 is discharged from the hot water mixing valve 202, if the hot water mixing valve 202 is located far from the hot water supply device 200, the hot water mixing valve 202 is used. Even if the opening operation is performed, hot water does not immediately come out, and first, the cold water in the long pipe 204 is discharged from the hot water mixing valve 202.
[0003]
For example, the hot water used by opening the hot and cold mixing valve 202 in the bathroom needs to be at a predetermined temperature or higher (usually about 40 ° C. or higher), and hot water at a temperature lower than that is not used.
Therefore, the cold water coming out from the hot water / mixing valve 202 during the initial period cannot be used, and this is dead water (water discarded as it is).
[0004]
Further, there is a problem that the user of the hot / cold water mixing valve 202 has to wait for a long time until the hot water having the desired temperature comes out of the hot / cold water mixing valve 202.
Therefore, in recent years, in order to solve the problems of the generation of a large amount of wasteful water and a long hot water waiting time, an electric water heater as an immediate hot water supply device is provided near the hot water mixing valve.
[0005]
Conventionally, when installing an electric water heater, as shown in FIG. 6, in order to supply water from a water supply source to the electric water heater (hot water source) 206, the water supply pipes 208 and 210 are installed by piping. Another water supply pipe 214 is branched and extended from a branch part 212 of a connection part between the water supply pipes 208 and 210 so that water can be supplied to the water heater 206 and also to the hot water mixing valve 202. Is connected to the water-side connection port of the hot-water mixing valve 202, and a hot water supply pipe 216 for supplying hot water (hot water) from the electric water heater 206 to the hot-water mixing valve 202 is installed and one end thereof is connected to the electric water heater. The other end side was connected to the hot water side connection port of the hot water mixing valve 202 at 206.
[0006]
In the hot water supply system including the electric water heater 206, the water from the water supply source is supplied to the electric water heater 206, so that the hot water inside the electric water heater 206 is pushed out and supplied to the hot water mixing valve 202 through the hot water supply pipe 216. Is done.
On the other hand, the water from the water supply source is supplied to the hot water mixing valve 202 through the water supply pipe 214 branched and extended from the branch part 212.
The hot water mixing valve 202 mixes the supplied water and hot water at a predetermined ratio, and discharges mixed water at a desired temperature from the water outlet.
[0007]
FIG. 7 shows a specific example of installation of an electric water heater. An electric water heater 206 is connected to a water supply source pipe as a water supply source by water supply pipes 208 and 210 via a stop cock 218.
Here, the water supply pipes 208 and 210 are connected to each other by a branching section 212.
[0008]
In this example, the branch section 212 is configured by a pressure reducing valve having a branch path, and the water supply pipe 214 extends from the branch port of the branch section 212, and water from the water supply source pipe is supplied to the branch section 212. The water is branched and supplied to the electric water heater 206 side and the hot water / mixing valve 202 side.
Here, the pressure reducing valve constituting the branch portion 212 serves to reduce the pressure on the secondary side with respect to the pressure of the water supply on the primary side.
[0009]
A hot water discharge pipe 216 extends from the electric water heater 206, and the tip thereof is connected to the hot water / water mixing valve 202.
Reference numeral 220 denotes a relief valve for releasing the expanded water from the electric water heater 206, and is provided on the branch pipe 222 from the water supply pipe 210.
The overflow water from the relief valve 220 is discharged through the discharge pipe 224.
[0010]
[Problems to be solved by the invention]
However, when the electric water heater 206 is installed according to the above-described conventional method, the electric water heater 206 and the hot water mixing valve 202 must be installed separately, and a branch portion 212 is provided between the water supply pipes 208 and 210. Then, another water supply pipe 214 is branched and extended therefrom, and a hot water supply pipe 216 is extended from the electric water heater 206, and each of the hot water supply pipe 216 and the water supply pipe 214 is connected to the hot water mixing valve 202. There must be.
In this case, the entire system configuration including piping construction and piping is complicated, the entire hot water supply system including the electric water heater and the hot water mixing valve is enlarged, and a large installation space is required.
[0011]
In addition, there is a problem that the number of man-hours for installing equipment including piping construction and piping connection is increased, making the operation troublesome and increasing the overall cost.
Incidentally, as an example of simplifying piping construction, an example has been disclosed in the following document 1 below.
[0012]
As disclosed in this document 1, as shown in FIG. 8, a connecting device 226 having a water supply passage 228, a hot water passage 230, and a bypass passage 232 is connected to an electric water heater 206. It is.
However, what is disclosed in this document 1 is that the water supply pipe and the hot water supply pipe need only be connected to the connection device 226, and each need not be connected directly to the electric water heater 206 separately, but the hot water mixing valve 202 is separately provided. And the connection device 226 must be connected by piping, and the conventional problem still remains.
[Reference 1] Japanese Patent No. 3079874
[Means for Solving the Problems]
The hot water source adapter with a hot and cold water mixing valve of the present invention has been devised to solve such a problem.
Thus, the first aspect of the present invention is a hot water source adapter connected to a hot water source serving as a hot water supply source, wherein (a) (a) a water inlet for inflowing water, and (b) inflow of hot water. the hot water inlet to, (c) water flow flows from the inlet water and該湯inlet mixing chamber for mixing the inflow hot water from, and (d) the water from the water and該湯inlet from the water inlet A hot and cold water mixing valve provided with a valve body that adjusts the ratio of inflow; (b) an outlet of mixed water that causes the mixed water to flow out of the mixing chamber of the hot and cold water mixing valve; A water supply port provided on the upstream side of the water supply and connected to the water supply pipe; (d) the water supply port is connected to the water inlet of the hot water mixing valve, and the water flowing into the water supply port from the water supply pipe is An internal water supply channel leading to the water inlet of the hot water mixing valve; and (e) a branch from the internal water supply channel and flowing into the water supply port to reach the internal water supply channel. And (f) connecting the hot water inlet of the hot water mixing valve with the hot water source, bypassing the hot water mixing valve and flowing to the hot water source side, An internal hot water supply passage for leading the hot water of the vessel to the hot water inlet of the hot water mixing valve, and (g) a connecting portion provided downstream of the hot water with respect to the hot water mixing valve and connected to the hot water supply device, has, directly connected capable constructed without passing through a pipe to the hot water source unit by the connecting portion, wherein the branched water supply passage, two passages between the inner hot-water path is enclosed and on one of the connecting portion It is characterized by.
[0014]
According to a second aspect of the present invention, in the first aspect, the branch water supply path is formed in a body that houses the valve body of the hot and cold water mixing valve.
[0015]
According to a third aspect of the present invention, in any one of the first and second aspects, a temperature sensing element that senses a mixed water temperature and moves the valve body in the mixing chamber of the hot and cold water mixing valve is housed. The hot and cold water mixing valve is of a thermostat type that automatically adjusts the temperature of the mixed water to a set temperature by the action of the temperature sensing element.
[0016]
According to a fourth aspect of the present invention, in the hot water source adapter according to any one of the first to third aspects, the hot water supply adapter includes a pressure reducing valve for reducing the pressure on the secondary side relative to the primary pressure on the water supply pipe side. It is provided with a mixing valve.
[0017]
According to a fifth aspect of the present invention, in any one of the first to fourth aspects, the hot water source device is an electric water heater.
[0018]
[Operation and effect of the invention]
As described above, the present invention includes a water supply port connected to a water supply pipe, a connecting portion to a hot water supply device, a hot water mixing valve, and an internal hot water supply path that guides hot water from the hot water supply device to a hot water inlet in the hot water mixing valve. And an outlet for mixed water, an internal water supply channel for leading water from the water supply port to the water inlet of the hot water mixing valve, and a branched water supply channel for branching from the internal water supply channel to bypass the water supply to the hot water source side. Adapter (hot water source adapter; the same applies hereinafter), which can be directly connected to the hot water source without piping.
[0019]
In the present invention, the adapter itself is provided with a hot water mixing valve, a function of supplying water from the water supply port into the hot water mixing valve, and water from the water supply port is bypassed to the hot water supply side. Therefore, there is no need to provide a branching part on the pipe for branching the water from the water supply source into the hot water supply device and the hot water mixing valve as in the prior art. Can be directly connected to the hot water source, and they can be configured integrally, and the hot water mixing valve and the electric water heater are separately installed as in the prior art, and the various configurations associated therewith and It becomes possible to simplify the troublesome work.
As a result, the space occupied by the hot water supply system including the hot water supply device can be saved, and the construction can be saved, and the overall cost can be reduced.
[0020]
In the present invention, the branch water supply channel can be formed in the body of the hot and cold water mixing valve (claim 2).
The hot and cold water mixing valve is a thermostat type that accommodates a temperature sensing element in the mixing chamber, moves the position of the valve based on temperature sensing by the temperature sensing element, and automatically adjusts the temperature of the mixed water to the set temperature. (Claim 3).
If it does in this way, the water of appropriate temperature can be discharged from the hot water mixing valve.
[0021]
In the present invention, the adapter may be provided with a pressure reducing valve for reducing the pressure on the secondary side with respect to the primary pressure on the water supply pipe side, together with the hot water mixing valve.
In this way, it is not necessary to separately provide a pressure reducing valve, and the configuration of the hot water supply system can be further simplified.
[0022]
The present invention is particularly suitable when applied to an adapter for an electric water heater as a hot water source (Claim 5).
[0023]
【Example】
Next, embodiments of the present invention will be described in detail with reference to the drawings.
In FIG. 1, reference numeral 10 denotes an electric water heater as a hot water source, and an electric heater 12 is provided inside a can body 11.
14 is an electric water heater adapter (hot water source adapter; hereinafter simply referred to as an adapter) directly connected to the electric water heater 10, and a water supply pipe 16 and a hot water outlet pipe 18 are connected to the adapter 14.
Reference numeral 20 denotes a pipe for pushing the water sent through the water supply pipe 16 into the bottom of the electric water heater 10 via the adapter 14.
[0024]
FIG. 2 specifically shows the internal structure of the adapter 14.
In the figure, reference numeral 22 is a hot water / water mixing valve, and 24 is a pressure reducing valve for reducing the pressure on the secondary side relative to the pressure on the primary side.
In other words, the adapter 14 of this example is configured as a unit comprising the hot and cold water mixing valve 22 and the pressure reducing valve 24.
In FIG. 2, 26 is a body of the pressure reducing valve 24, and 28 is a body of the hot and cold mixing valve 22, which are integrally formed.
[0025]
The adapter 14 has a water supply port 30, a connecting portion 32, and a mixed water outlet 34. The adapter 14 is connected to the water supply pipe 16 at the water supply port 30 and is directly connected to the electric water heater 10 at the connecting portion 32. ing.
Further, the mixed water in which water and hot water are mixed at a predetermined ratio by the hot water / water mixing valve 22 flows out from the outlet 34 to the hot water supply pipe 18 in FIG.
Reference numeral 36 denotes an internal water supply path provided after the water supply port 30, and water from the water supply pipe 16 is led to a water inlet 52 described later in the hot water mixing valve 22 through the internal water supply path 36, and further through the water inlet 52. It flows into the hot water mixing valve 22.
[0026]
The pressure reducing valve 24 provided on the internal water supply passage 36 has a valve body 38, and the water passage is opened and closed when the valve body 38 is seated on or separated from the valve seat 40.
A valve shaft 42 extending downward in the figure is integrally formed with the valve body 38.
A piston 44 is fixed to the end portion of the valve shaft 42 in an integrally moving state, and the piston 44 is slidably and watertightly fitted to the inner surface of the cylinder 46.
Here, the piston 44 is urged downward by a spring 48 in the drawing, that is, in a direction to open the valve body 38.
[0027]
The pressure reducing valve 24 operates as follows.
That is, the valve body 38 is kept open while the pressure on the secondary side is low, and the water from the water supply port 30 flows downstream through the pressure reducing valve water channel 50 that constitutes a part of the internal water supply channel 36.
On the other hand, when the pressure on the secondary side reaches a certain pressure, the piston 44 is pushed upward in the figure against the urging force of the spring 48, and the valve body 38 moves integrally with the piston 44 here to move the valve seat. Sit at 40 and close the waterway.
[0028]
In this example, the hot and cold mixing valve 22 is of a thermostat type, and has a water inlet 52, a hot water inlet 54 and a valve body 56 as shown in FIG.
The water and hot water flowing in from the water inlet 52 and the hot water inlet 54 flow into the mixing chamber 58 and are mixed there, and the mixed water flows out from the opening 60 to the right in the figure.
And the valve body 56 changes the opening degree of the water inflow port 52 and the hot water inflow port 54 by the left and right position movement in the figure, and thus the amount of water inflow from the water inflow port 52 and the amount of hot water inflow from the hot water inflow port 54. And change the ratio.
[0029]
A temperature-sensitive spring (temperature-sensitive body) 62 made of a shape memory alloy is disposed in the mixing chamber 58, and the valve body 56 is urged leftward in the drawing by the temperature-sensitive spring 62.
This temperature-sensitive spring 62 changes the urging force in the left direction in the figure according to the temperature of the mixed water in the mixing chamber 58.
[0030]
That is, when the mixed water temperature becomes higher than the set temperature, the urging force is increased and the valve body 56 is slightly moved leftward in the drawing to widen the opening of the water inlet 52 while increasing the opening of the hot water inlet 54. Narrow. That is, the amount of water inflow is increased and the amount of hot water inflow is decreased.
On the other hand, when the temperature of the mixed water is lower than the set temperature, the urging force to the valve body 56 is reduced to slightly move the valve body 56 rightward in the figure to narrow the opening of the water inlet 52, while the hot water inlet 52 54 is widened. That is, the inflow amount of water is decreased and the inflow amount of hot water is increased and changed.
[0031]
Reference numeral 63 denotes a rotation operation shaft, and a rotation handle 64 is attached to an end portion.
The rotation operation shaft 63 has a cylindrical portion 66. A female screw is formed on the inner peripheral surface of the cylindrical portion 66, and a male screw on the outer peripheral surface of the drive member 68 is screwed there.
[0032]
The drive member 68 shifts the position of the valve body 56 in the left-right direction in the drawing by changing the biasing force of the first bias spring 70 and the second bias spring 72. Specifically, when the drive member 68 is moved in the pushing direction (right direction in the figure) by the rotation of the rotation operation shaft 63, the first bias spring 70 and the second bias spring 72 are compressed to increase the biasing force. The balance between the temperature-sensitive spring 62 and the biasing force of the first bias spring 70 and the second bias spring 72 is broken, that is, the biasing force of the first bias spring 70 and the second bias spring 72 becomes the biasing force of the temperature-sensitive spring 62. It overcomes and shifts the valve body 56 from the balanced position to the right in the figure.
[0033]
The valve body 56 changes the opening degree of the water inlet 52 and the hot water inlet 54 based on the temperature sensing operation by the temperature sensing spring 62 at the shift position, thereby adjusting the mixing ratio of water and hot water.
[0034]
A branch water supply path 74 is formed in the body 28 of the hot and cold mixing valve 22 along the circumferential direction.
This branch water supply path 74 is formed in a state where it branches off from the pressure reducing valve water path 50, that is, the internal water supply path 36, and bypasses the internal water path of the hot water mixing valve 22, and a part of the water flowing from the water supply port 30 is branched into this branch It is directly supplied to the electric water heater 10 through the water supply channel 74.
Specifically, the water from this branch water supply channel 74 is supplied to the bottom of the electric water heater 10 through the pipe 20.
[0035]
The adapter 14 in this example is also provided with an internal hot water supply path 76 in the connecting portion 32, and hot water pushed out from the electric water heater 10 is led to the hot water inlet 54 of the hot water mixing valve 22 through the internal hot water supply path 76. Furthermore, it flows from the hot water inlet 54 into the hot water mixing valve 22.
[0036]
In the case of the adapter 14 of this example, a part of the water that has flowed into the water supply port 30 from the water supply pipe 16 flows into the hot water mixing valve 22 through the water inlet 52 of the hot water mixing valve 22.
The other part bypasses the internal water channel of the hot and cold water mixing valve 22 and flows directly into the electric water heater 10 through the branch water supply channel 74.
When the water from the branch water supply path 74 flows into the electric water heater 10, the hot water stored therein is pushed up, and from the hot water inlet 54 of the hot water mixing valve 22 through the internal hot water supply path 76 of the adapter 14 to the inside of the valve. Flow into.
[0037]
Then, the water flowing in from the water inlet 52 and the hot water flowing in from the hot water inlet 54 are mixed in the mixing chamber 58 and flow out from the outlet 34 to the hot water piping 18 side.
[0038]
As described above, the adapter 14 of this example can be directly connected to the electric water heater 10 without a pipe, and the adapter 14 itself has the hot water mixing valve 22 and supplies water from the water supply port 30 to hot water. Since it has a function of supplying water to the inside of the mixing valve 22 and a function of supplying water directly to the electric water heater 10 by bypassing the internal water passage of the hot water / mixing valve 22, water from the water supply source can be used in the conventional manner. There is no need to provide a branch on the pipe for branching to the water heater 10 and the hot water mixing valve.
[0039]
In addition, since the hot water mixing valve 22 can be directly connected to the electric water heater 10, it is possible to install the hot water mixing valve and the electric water heater 10 separately as in the prior art, and to simplify the various constructions and work associated therewith. Can be
[0040]
As a result, the space occupied by the hot water supply system including the electric water heater 10 can be saved and the construction can be saved, and the overall cost can be reduced.
[0041]
The hot / cold water mixing valve 22 accommodates a temperature sensitive spring 62 in the mixing chamber 58 and automatically adjusts the mixed water temperature to the set temperature based on the temperature sensing by the temperature sensitive spring 62. By keeping this, water at an appropriate temperature can always flow out from the outlet 34.
[0042]
In this example, since the pressure reducing valve 24 is provided in the adapter 14 together with the hot water mixing valve 22, it is not necessary to provide the pressure reducing valve 24 separately, and the configuration of the hot water supply system can be further simplified.
[0043]
FIG. 4 shows a reference example. In this example, the adapter 14 is configured in a form in which the pressure reducing valve 24 in the above embodiment is omitted.
In this example, the branch water supply is also provided by bifurcating the connecting portion 32 into one of the connecting pipes 32 </ b> A so as to branch the water from the internal water supply path 36 following the water supply port 30 to the electric water heater 10. An internal hot water supply path 76 that guides hot water from the electric water heater 10 to the hot water inlet 54 in the hot water mixing valve 22 is formed in the path 74 and the other connecting pipe 32B.
The other points are basically the same as in the first embodiment.
[0044]
Although the embodiment of the present invention has been described in detail above, this is merely an example.
For example, the present invention can be applied as an adapter for various hot water sources other than the above-mentioned electric water heater such as a hot water supply device, or a hot water mixing valve provided in the adapter can be used in various forms other than the above-described thermostat type hot water mixing. The present invention can be configured in various forms without departing from the gist of the present invention, such as a valve or various mixing valves not having such a thermostat function.
[Brief description of the drawings]
FIG. 1 is a view showing an adapter according to an embodiment of the present invention attached to an electric water heater.
FIG. 2 is a diagram showing an internal structure of the adapter according to the embodiment.
FIG. 3 is an enlarged view showing an internal structure of the hot and cold mixing valve in FIG. 2;
FIG. 4 is a diagram illustrating an adapter of a reference example.
FIG. 5 is a view showing a relationship between a conventional hot water supply device and a hot water mixing valve.
FIG. 6 is a diagram showing a conventional hot water supply system.
7 is a diagram showing an actual construction example of the electric water heater of FIG. 6;
FIG. 8 is a diagram showing an example of a prior art prior to the present invention.
[Explanation of symbols]
10 Electric water heater (hot water source)
14 Electric water heater adapter (hot water source adapter)
16 Water Supply Pipe 22 Hot Water Mixing Valve 24 Pressure Reducing Valve 28 Body 30 Water Supply Port 32 Connection Portion 34 Outlet 36 Internal Water Supply Channel 52 Water Inlet 54 Hot Water Inlet 56 Valve Body 58 Mixing Chamber 62 Temperature Sensitive Spring (Temperature Sensitive Body)
74 Branch water supply channel 76 Internal hot water supply channel

Claims (5)

A hot water source adapter connected to a hot water source serving as a hot water supply source,
(A) (a) Water inlet through which water flows in, (b) Hot water inlet through which hot water flows in, (c) Mixing chamber for mixing water flowing in from the water inlet and hot water flowing in from the hot water inlet, and (d) a hot and cold water mixing valve provided with a valve body for adjusting a ratio of inflow of water from the water inlet and hot water from the hot water inlet;
(B) an outlet for mixed water from which the mixed water from the mixing chamber of the hot and cold water mixing valve flows out;
(C) a water supply port provided on the upstream side of the water supply with respect to the hot water mixing valve and connected to the water supply pipe;
(D) an internal water supply path that communicates the water inlet with the water inlet of the hot water mixing valve and guides the water flowing into the water inlet from the water supply pipe to the water inlet of the hot water mixing valve;
(E) a branched water supply channel that branches from the internal water supply channel and flows into the water supply port and reaches the internal water supply channel, bypassing the hot water mixing valve and flowing to the hot water source side;
(F) an internal hot water supply path that connects the hot water inlet of the hot water mixing valve and the hot water source, and guides the hot water of the hot water source to the hot water inlet of the hot water mixing valve;
(G) a connecting portion provided on the downstream side of the water supply to the hot water mixing valve and connected to the hot water source;
Has, directly connected capable constructed without passing through a pipe to the hot water source unit by the connecting portion, wherein the branched water supply passage, two passages between the inner hot-water path is enclosed and on one of the connecting portion A hot water source adapter with a hot and cold water mixing valve.   2. The hot water source adapter with a hot and cold water mixing valve according to claim 1, wherein the branch water supply path is formed in a body containing the valve body of the hot and cold water mixing valve.   In any one of Claims 1 and 2, the temperature sensing body which senses the temperature of mixed water and moves the position of the valve body is accommodated in the mixing chamber of the hot water / water mixing valve, A hot water source adapter with a hot water mixing valve, which is a thermostat type that automatically adjusts the temperature of the mixed water to a set temperature by the action of a temperature sensing element.   In any one of Claims 1-3, the said hot water source adapter is equipped with the pressure reducing valve which pressure-reduces the pressure on the secondary side with respect to the primary side pressure on the said water supply piping side with the said hot water mixing valve. A hot water source adapter with a hot and cold water mixing valve.   The hot water source adapter with a hot water mixing valve according to any one of claims 1 to 4, wherein the hot water source device is an electric water heater.

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