JP3770642B2 - Bath temperature control device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a bath apparatus, and more particularly to a bath temperature control apparatus for obtaining a bath water having an appropriate temperature distributed mainly for a bathtub or shower.
[0002]
[Prior art]
Conventionally, bath temperature regulators that mix hot water and cold water in appropriate amounts and use them mainly for baths or showers, and in some cases automatically obtain hot water for kitchens are widely used. ing.
[0003]
A conventional bath water temperature control apparatus is as shown in FIG. 6, wherein 1 is a mixing chamber, the mixing chamber 1 is a valve seat 2 having a valve hole 3 on the upper surface, and a mixing chamber 1 on the lower surface. A bath hot water outlet 4 is provided for allowing bath water made by mixing low temperature hot water and high temperature hot water to flow out to a hot water pipe 5 connected to a bathtub or shower. One side opens to a hot water inlet 6. A hot water inlet 7 is provided as a high temperature hot water inlet to which a hot water pipe from a hot water supply device is connected, and a tap water inlet 8 is provided as a low temperature hot water inlet to which a water pipe is connected through the valve hole 3 of the valve seat 2. is there.
[0004]
9 is a flow control valve, and a valve plate 11 for opening and closing the valve hole 3 of the valve seat 2 is provided at the lower end of the valve shaft 10 of the flow control valve 9. A thermostat 12 having a piston 13 that can be moved up and down at the same time is filled with wax as a changing thermo element, and is fixedly fitted.
[0005]
Since the wax is heated to reach the melting point and changes in volume greatly from solid to liquid, and the melting point can be freely changed by changing the composition, the melting point according to the set temperature at which the thermostat 12 is operated. Wax is used as a thermo element.
[0006]
Reference numeral 14 denotes a guide pipe extending above the mixing chamber 1 so that the valve shaft 10 of the flow rate adjusting valve 9 can be moved up and down, and 15 is fitted to the upper end of the guide pipe 14 and fixed at a predetermined position according to the set temperature. It is a pressed holding shaft.
[0007]
Therefore, the flow rate adjusting valve 9 presses the valve plate 11 against the mixing chamber 1 with a force toward the upper side of the plurality of holding springs 16, contacts the lower surface of the valve seat 2, closes the valve hole 3, and closes the guide tube 14. The valve shaft 11 is movably moved up and down, and the upper end of the piston 13 is applied to the lower end of the pressing shaft 15 to be pressed from above.
[0008]
In the hot water temperature control apparatus configured as described above, hot water sent from the hot water supply device to the hot water inlet 7 through the hot water supply pipe enters the mixing chamber 1 through the hot water hole 6.
[0009]
At this time, if the temperature of the hot water is equal to or lower than the set temperature as the bath water, the volume of the wax as the thermo element filled in the thermostat 12 of the flow rate control valve 9 hardly expands, so that the piston 13 It cannot be pushed upward with too much force.
[0010]
Therefore, the flow rate adjusting valve 9 is not pushed down by the force of the piston 13 but is pushed up by the force of the holding spring 16 so that the valve plate 11 hits the valve seat 2 to close the valve hole 3 and close the valve. The tap water from the water pipe does not enter the mixing chamber 1 at all from the tap water inlet 8, and the hot water entered from the hot water inlet 7 goes out as it is to the hot water pipe 5 through the bath hot water outlet 4 as bath water.
[0011]
On the other hand, when the temperature of the hot water entering the mixing chamber 1 through the hot water inlet 7 is equal to or higher than the set temperature, the volume of the wax as the thermo element filled in the thermostat 12 of the flow control valve 9 expands, and the piston 13 It is pushed upward with a strong force.
[0012]
Then, since the upper end of the flow rate adjusting valve 9 is pressed by the holding shaft 15, the flow control valve 9 is pushed down by a force stronger than the pushing force by the holding spring 16, and the valve plate 11 is lowered to move away from the valve seat 2. The valve is opened with respect to the valve hole 3.
[0013]
As a result, the hot water that has entered the mixing chamber 1 through the hot water inlet 7 is diluted with tap water that has entered the mixing chamber 1 through the valve hole 3 from the tap water inlet 8, and bath water made by diluting the hot water with water is used. It flows out to the hot water distribution pipe 5 through the hot water outlet 4 for bath.
[0014]
In this way, when hot water is diluted with tap water to make bath water, the bath water eventually falls to a set temperature or lower, and then the volume of the thermo-element contracts, so the flow control valve 9 is moved upward by the holding spring 16. The valve plate 11 hits the valve seat 2 again to close the valve again.
[0015]
Then, only hot water enters the mixing chamber 1 from the hot water inlet 7 and bath water is made. The bath water eventually rises above the set temperature, and the valve is opened again and diluted with tap water. .
[0016]
As described above, the conventional bath water temperature adjusting device is provided with the flow rate adjusting valve 9 for the tap water inlet 8 leading to the mixing chamber 1 so that hot water constantly enters the mixing chamber 1 from the hot water inlet 7. When the hot water is set as the bath water or below, the temperature is kept as it is. When the hot water is too hot, the valve is opened and diluted with tap water, and then the bathtub or shower is provided, and in some cases, distributed to the kitchen.
[0017]
[Problems to be solved by the invention]
However, in the conventional bath water temperature control device, the hot water coming out of the bathtub, shower or kitchen is too hot without being diluted with water, or in some cases the hot water from the hot water supply device is left without being diluted with water. There is a risk of burns.
[0018]
This is because the conventional bath water temperature control device is based on the hot water produced by the hot water supply device as described above, and if it is too hot, the valve is opened and diluted with water, so it can be completely diluted with water. Until that time, hot water with a temperature higher than the set temperature will be discharged.
[0019]
Moreover, since the temperature of the water for diluting the hot water is not constant, if the water temperature is high, it takes quite a long time until the hot water is completely diluted with water and reaches the set temperature as bath water, and it takes a long time. Hot water with a temperature higher than the set temperature has come out.
[0020]
In addition, if the valve fails and cannot close, hot water below the set temperature will continue to come out, so there is no danger, but if it does not open, hot water that will not be diluted with water will continue to come out. Because there is a risk of burns, it becomes very dangerous.
[0021]
The present invention eliminates the disadvantages of the prior art as described above, and does not cause hot water to come out as it is. The purpose is to provide.
[0022]
[Means for Solving the Problems]
In the present invention, a tap water inlet (22) as an inlet for passing low temperature hot water or tap water is connected via a flow rate control valve (24), and a hot water supply pipe as a hot water inlet is connected. The hot water inlet (23) is mixed with the low temperature hot water or tap water passed through the tap water inlet (22) and the hot water flowing from the hot water inlet (23) adjusted by the flow rate control valve (24). A hot water temperature adjusting device for a bath comprising a hot water outlet pipe (5) connected to a hot water outlet (4) for bathing out and connected to the mixing chamber (1), wherein the flow rate adjusting valve (24 ) Is an up-and-down change that continuously changes the hot water flow area from rising to lowering by closing the opening from the position where the valve hole (19) opens according to the amount of vertical movement of the hot water inlet (23). With a directional opening (26), always in the initial state The thermo-element (27) which is biased to a position where the upper valve hole (19) is opened by the spring (31) and expands or contracts in accordance with the hot water temperature at the lower end disposed in the mixing chamber (1). The valve cylinder (26) is lowered against the urging force of the presser spring (31) at the time of expansion so as to close the valve hole (19), and from the hot water inlet (23). The problem could be solved by adjusting the amount of hot water flowing in.
[0023]
In the present invention, a tap water inlet (22) as an inlet for passing low temperature hot water or tap water is connected via a flow rate control valve (24), and a hot water supply pipe as a hot water inlet is connected. The hot water inlet (23) is mixed with the low temperature hot water or tap water passed through the tap water inlet (22) and the hot water flowing from the hot water inlet (23) adjusted by the flow rate control valve (24). A hot water temperature adjusting device for a bath comprising a hot water outlet pipe (5) connected to a hot water outlet (4) for bathing out and connected to the mixing chamber (1), wherein the flow rate adjusting valve (24 ) Is a valve cylinder having a vertical opening that changes the hot water flow area by closing the opening from the position where the valve hole (19) opens according to the amount of vertical movement of the hot water inlet (23). 26), and in the initial state it is always lifted by the holding spring (31). Is provided with a thermo-element (27) that expands or contracts according to the temperature of the hot water at the lower end disposed in the mixing chamber (1). The amount of hot water flowing in from the hot water inlet (23) by lowering the valve cylinder (26) against the urging force of the pressing spring (31) to close the valve hole (19). It was possible to solve the problem by adjusting.
Further, according to the present invention, the length of the valve cylinder (26) that is raised by the biasing of the pressure spring (31) of the flow rate adjusting valve is adjusted to be raised from the valve seat (18) of the hot water supply cylinder (33). Thus, the problem was solved by controlling the amount of hot water mixed in to adjust the hot water for bathing to the set hot water temperature.
[0024]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention will be described with reference to the drawings.
[0025]
FIG. 1 is a longitudinal sectional view showing an embodiment of a bath water temperature adjusting device according to the present invention. Reference numeral 17 denotes a mixing chamber, and the mixing chamber 17 has a valve seat 18 having a valve hole 19 in the center on the upper surface. On the lower surface is a bath for allowing hot water for hot water as hot water as hot water as hot water as hot water as hot water as hot water in the mixing chamber 1 to flow out to a hot water pipe 5 connected to a bathtub or shower. A hot water outlet 20 is provided, and one side surface is opened as a hot water hole 21, and a tap water inlet 22 is provided as a low temperature hot water inlet 22 connected to the opening 21 and connected to a water pipe. A hot water inlet 23 is provided as a high temperature hot water inlet through which the hot water pipe from the hot water supply device is connected through the valve hole 18.
[0026]
Reference numeral 24 denotes a flow rate adjusting valve, and a valve shaft 25 for opening and closing the valve hole 18 of the valve seat 17 is fixedly attached to a lower end of the valve shaft 25 of the flow rate adjusting valve 24. A thermostat 27 having a piston 28 that can be moved up and down at the same time is fixed and fitted with wax as a thermo element whose volume changes in accordance with the temperature of the bath water.
[0027]
Reference numeral 29 denotes a guide pipe extending above the mixing chamber 1 so that the valve shaft 25 of the flow rate adjusting valve 24 can be moved up and down, and 30 is attached to the upper end of the guide pipe 29 and is predetermined according to the set temperature of the bath water. A pressing shaft fixed at the position 31 is a plurality of pressing springs for pushing the flow rate adjusting valve 29 upward.
[0028]
The valve cylinder 26 fixedly attached to the lower end of the valve shaft 25 of the flow rate adjusting valve 24 is as shown in a perspective view in FIG. 2, and the upper half is a closed water cylinder 32 that is a cylinder that closes the valve hole 19. The lower half is a hot water pipe 33 which is a cylinder provided with a plurality of notch grooves 34 as hot water grooves at predetermined intervals, and is attached to the valve shaft 25 at the center of the hot water pipe 32. A hole 35 is provided.
[0029]
Accordingly, the flow rate adjusting valve 24 attaches the valve cylinder 26 to the lower end of the valve shaft 25 via the mounting hole 35, and then sets the valve cylinder 26 into the valve hole 19 of the valve seat 18 with respect to the mixing chamber 17. Is fitted to the guide tube 29 so as to be movable up and down, pushed upward by a plurality of pressing springs 31, and deployed while pressing the upper end of the piston 28 from above with a pressing shaft 30.
[0030]
When the flow control valve 24 is arranged in the mixing chamber 17 in this way, the valve cylinder 26 is pushed upward, and a lower portion in which a notch groove 34 is provided at the position of the valve hole 19 of the valve seat 18. Since the hot water pipe 33 is located, the valve is open.
[0031]
Next, a state in which the flow rate adjustment valve 24 opens and closes according to the set temperature based on the low temperature hot water to adjust the hot water temperature will be described with reference to the longitudinal sectional views of FIGS.
[0032]
In FIG. 3, as described above, the flow rate adjusting valve 24 is pushed upward by the holding spring 31, and the valve cylinder 26 is located in the valve hole 19 of the mixing chamber 17 so that the hot water circulation cylinder portion 33 is located in the valve hole 19. The default settings are shown.
[0033]
In this state, the tap water from the tap water inlet 22 as the low temperature hot water inlet and the hot water from the hot water inlet 23 as the high temperature hot water inlet enter the mixing chamber 17 at the same time, and both are mixed to form bath water. And flow toward the hot water pipe 5.
[0034]
When the valve of FIG. 3 is opened and hot water is mixed with tap water, the temperature of the bath water produced in the mixing chamber 17 eventually reaches the set temperature and the state when the valve is closed is as shown in FIG. .
[0035]
That is, as hot water is mixed with tap water and the temperature of the hot water for bathing rises, the temperature of the wax, which is the filled thermoelement, rises in the thermostat 27 and the volume expands to give a force to push up the piston 28.
[0036]
However, since the upper end of the piston 28 is pressed by the holding shaft 30, the flow rate adjusting valve 24 gradually starts to move downward, and the temperature of hot water produced by mixing hot water with water in the mixing chamber 17 is the same as the set temperature. Then, the mixing chamber 17 is in a state where the lower end of the hot water closing cylinder 32 of the valve cylinder 26 of the flow rate adjusting valve 24 just comes to the position of the valve hole 19 to close the valve so that hot water does not enter. It starts to flow toward the hot water pipe 5.
[0037]
FIG. 5 shows a state in which hot water is mixed with water too much and the temperature of the bath water made in the mixing chamber 17 becomes too higher than the set temperature, and the valve is completely closed.
[0038]
In this state, since the wax filled in the thermostat 27 is considerably expanded, the flow rate control valve 24 is further lowered, and the mixing chamber 17 is closed with the valve hole 19 at the upper end of the hot water barrel 32 of the valve barrel 26 and the valve is completely closed. Will never be mixed.
[0039]
In this case, since only low-temperature tap water enters the mixing chamber 17, the temperature of the hot water gradually decreases, and the thermostat 27 starts to shrink the wax, and the flow rate control valve 24 gradually rises with the force of the holding spring 31. 4, after passing through the same state as the set temperature shown in FIG. 4, the valve is opened again below the set temperature as shown in FIG. 3.
[0040]
As shown in FIG. 4, since the temperature of the hot water becomes the same as the set temperature, the valve is closed and hot water does not enter the mixing chamber 17, so that the hot water is mixed too much and the hot water temperature becomes higher than the set temperature. Even if this happens, the flow control valve 24 moves in the direction of closing the valve as the temperature of the hot water rises and never opens until the temperature drops below the set temperature, so there is a risk of burns. There is no worry that too hot hot water is distributed to the bathtub or shower.
[0041]
Even if the valve breaks down, if it remains closed, hot water will not be mixed and bath water will continue to be made as cold tap water, and even if it remains open, Bath water is mixed with tap water, so there is absolutely no danger of scalding only hot water when the temperature of the hot water is too high.
[0042]
Further, as described above, the flow rate adjusting valve 24 opens and closes the valve by moving the valve cylinder 26 provided with the notch groove 34 fitted as a hot water groove in the valve hole 19 according to the hot water temperature. The valve is opened and closed while adjusting the amount according to the hot water temperature, and the hot water temperature is adjusted precisely.
[0043]
When the temperature of the bath water is too lower than the set temperature, the flow rate adjusting valve 24 opens the valve by the hot water pipe 33 provided with the notch groove 34 as the hot water groove coming out on the valve seat 18. The length of the water-flow tube 33 that comes out on the valve seat 18, that is, the amount of opening the valve, which is the hot-water supply area, changes according to the hot water temperature.
[0044]
For this reason, when the valve is opened, an amount of hot water proportional to the temperature difference between the set temperature and the bath water temperature enters the mixing chamber 1 so that the bath water is quickly and accurately adjusted to the set hot water temperature. become.
[0045]
On the other hand, when the temperature of the hot water for bathing is too high, the flow rate adjusting valve 24 causes the closed water tube 32 to come out under the valve seat 18 and close the valve. The length, that is, the amount by which the valve is closed, is proportional to the temperature difference between the bath water temperature and the set temperature, and never opens until the bath temperature falls below the set temperature. It completely prevents it from going too far.
[0046]
Although the thermostat type based on the volume change according to the bath temperature of the thermo element is shown in the above embodiment as a flow rate adjusting valve arranged at the inlet of the high temperature hot water, depending on the hot water temperature such as a bimetal type or a shape memory alloy type It goes without saying that other types of valves that can automatically open and close may be used.
[0047]
Also in the thermostat type flow control valve, as the thermo element, other than wax, for example, a gas or a low melting point alloy such as a gas or a low melting point alloy, which is sensitive to heat, may be used.
[0048]
【The invention's effect】
The present invention is configured as described above, has a very simple structure, is inexpensive, can accurately control the temperature, and does not generate hot water, and can distribute hot water to a bathtub or shower in a safe state. I will provide a.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view of an example,
FIG. 2 is a perspective view of a valve cylinder,
FIG. 3 is a longitudinal sectional view of the flow control valve opened,
FIG. 4 is a longitudinal sectional view at the moment of closing the flow control valve,
FIG. 5 is a longitudinal sectional view when the flow control valve is completely closed,
FIG. 6 shows a conventional example.
[Explanation of symbols]
17 Mixing chamber 18 Valve seat 19 Valve hole 22 Tap water (low temperature hot water) inlet 23 Hot water (high temperature hot water) inlet 24 Flow rate adjusting valve 25 Valve shaft 26 Valve cylinder 27 Thermostat 28 Piston 30 Press shaft 31 Press spring 32 Closed water cylinder 33 Hot water pipe 34 Notch (hot water) groove

Claims (3)

  A hot water inlet (22) as an inlet for passing low temperature hot water or tap water and a hot water inlet (22) connected via a flow rate control valve (24) and a hot water supply pipe as a high temperature hot water inlet ( 23) and low temperature hot water or tap water passed from the tap water inlet (22) and hot water flowing from the hot water inlet (23) adjusted by the flow rate control valve (24) are mixed. A hot water temperature control device for a bath comprising a hot water outlet pipe (5) connected to a hot water outlet (4) connected to (1) and flowing out, wherein the flow rate control valve (24) is the hot water According to the amount of vertical movement of the inflow port (23), an opening in the vertical direction that changes the hot water passage area continuously from rising to lowering so as to close the opening from the position where the valve hole (19) opens. A valve spring (26) having a pressure spring in the initial state. 31) is provided with a thermoelement (27) that is urged to a position where the upper valve hole (19) opens, and that expands or contracts according to the hot water temperature at the lower end disposed in the mixing chamber (1). During the expansion, hot water flowing in from the hot water inlet (23) is caused by lowering the valve cylinder (26) against the urging force of the holding spring (31) to close the valve hole (19). A bath water temperature adjusting device characterized in that the amount of water mixed is adjusted.   A hot water inlet (22) as an inlet for passing low temperature hot water or tap water and a hot water inlet (22) connected via a flow rate control valve (24) and a hot water supply pipe as a high temperature hot water inlet ( 23) and low temperature hot water or tap water passed from the tap water inlet (22) and hot water flowing from the hot water inlet (23) adjusted by the flow rate control valve (24) are mixed. A hot water temperature control device for a bath comprising a hot water outlet pipe (5) connected to a hot water outlet (4) connected to (1) and flowing out, wherein the flow rate control valve (24) is the hot water A valve cylinder (26) having a vertical opening that changes the hot water flow area by closing the opening from the position where the valve hole (19) opens according to the amount of vertical movement of the inlet (23). In the initial state, the upper valve hole ( 9) is provided with a thermo-element (27) that is urged to the opening position and expands or contracts in accordance with the hot water temperature at the lower end disposed in the mixing chamber (1). 31) The valve barrel (26) is lowered against the urging of 31) to close the valve hole (19) so as to adjust the amount of hot water flowing in from the hot water inlet (23). A bath water temperature control device characterized by that. Hot water mixed by adjusting the length of the valve cylinder (26) rising from the valve seat (18) of the hot-water pipe (33) raised by the biasing force of the pressure spring (31) of the flow rate adjusting valve. The bath water temperature adjusting device according to claim 1 or 2, wherein the amount of mixed water is controlled to adjust the bath water to a set hot water temperature .

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