JP2010060180A - Hot water/water mixing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a hot water/water mixing device capable of easily delivering warm water of a preferred temperature from a plurality of delivery locations. <P>SOLUTION: The hot water/water mixing device (1) delivers temperature controlled warm water by switching the plurality of delivery locations (2, 4, 6). It has a temperature operation part (10) for setting a temperature of the warm water to be delivered, delivery location switching operation parts (12a, 12b, 12c) switching delivery locations for delivering the warm water, a temperature control part (22) mixing supplied hot water and water to produce warm water of a predetermined temperature, and a control part (42) controlling the temperature control part on the basis of the temperature set by the temperature operation part and the delivery locations switched by the delivery location switching operation part. It is characterized by that in the control part, the set temperature set by the temperature operation part is corrected in response to the delivery locations switched by the delivery location switching operation part, and the temperature control part is controlled so as to deliver warm water of the corrected temperature. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to a hot water / water mixing device, and more particularly, to a hot water / water mixing device that switches temperature-adjusted hot water to a plurality of water discharge destinations.

  Japanese Patent Laid-Open No. 62-255736 (Patent Document 1) describes a hot and cold water mixing device. This hot and cold water mixing device is configured so that hot water mixed with hot water and water can be switched to and discharged from three water discharge destinations: a bathtub curan, a washroom curan, and a shower head. A setter for setting the temperature of hot water discharged from the water discharge destination is provided in the vicinity of each water discharge destination, and the user can set a favorite temperature for each water discharge destination.

JP-A-62-255736

  However, in the hot and cold water mixing device described in Japanese Patent Application Laid-Open No. Sho 62-255736, when the user of the device is changed and wants to use hot water having a temperature different from that of the previous user, the temperature setting is performed again for each water discharge destination. There is inconvenience that it is necessary. On the other hand, in the conventional hot and cold water mixing apparatus that is generally used, the temperature of hot water that can be set is one, so that the user can adjust each temperature setting device to a desired temperature, Hot water of the same temperature can be discharged from the water discharge destination. However, in practice, one user finely adjusts the set temperature so that hot water having a desired temperature is obtained each time the water discharge destination is switched.

As a cause of this, even if hot water of the same temperature is discharged from each water discharge destination, the user's perceived temperature differs depending on the use mode of the hot water, and the length of the pipe to the discharge hole differs depending on the water discharge destination. It is conceivable that the temperature of hot water actually discharged from the water outlet slightly decreases at a discharge destination having a long pipe.
Therefore, an object of the present invention is to provide a hot and cold water mixing device capable of easily discharging hot water having a desired temperature from a plurality of water discharge points.

  In order to solve the above-described problem, the present invention provides a hot water mixing apparatus that discharges hot water adjusted in temperature to a plurality of water discharge destinations, and a temperature adjustment operation unit for setting the temperature of discharged hot water And a water discharge destination switching operation unit for switching a water discharge destination for discharging hot water, a temperature adjusting unit that mixes the supplied hot water and water to generate hot water of a predetermined temperature, and a temperature adjustment operation unit. A control unit that controls the temperature adjustment unit based on the temperature and the water discharge destination switched by the water discharge destination switching operation unit, and the control unit sets the set temperature set by the temperature adjustment operation unit to the water discharge destination. The correction is made in accordance with the water discharge destination switched by the switching operation unit, and the temperature adjusting unit is controlled so that the hot water having the corrected correction temperature is discharged.

  In the present invention configured as described above, the temperature of the hot water discharged is set by the temperature adjustment operation unit, and the hot water is discharged from the water discharge destination switched by the water discharge destination switching operation unit. The control unit controls the temperature adjustment unit based on the temperature set by the temperature adjustment operation unit and the water discharge destination switched by the water discharge destination switching operation unit. The control unit corrects the set temperature set by the temperature adjustment operation unit according to the water discharge destination switched by the water discharge destination switching operation unit, and discharges hot water having the corrected correction temperature.

  According to the present invention configured as described above, the set temperature set by the temperature adjustment operation unit is corrected according to the water discharge destination, and hot water of the corrected temperature is discharged. There is no need to adjust, and hot water at a desired temperature can be easily discharged from a plurality of water discharge points.

In this invention, Preferably, a control part correct | amends preset temperature so that the difference of correction temperature and preset temperature becomes constant for every water discharge destination.
According to the present invention configured as described above, since the difference between the correction temperature and the set temperature is constant for each water discharge destination, the control unit can easily calculate the correction temperature.

In this invention, Preferably, a control part correct | amends preset temperature so that the difference of correction temperature and preset temperature changes according to a water discharge destination and preset temperature.
According to the present invention configured as described above, since the difference between the correction temperature and the set temperature is determined according to the water discharge destination and the set temperature, fine correction can be performed.

In the present invention, preferably, the control unit corrects the set temperature so that the difference between the corrected temperature and the set temperature increases as the set temperature increases.
According to the present invention configured as described above, since the set temperature is corrected so that the difference between the corrected temperature and the set temperature increases as the set temperature increases, every time the user switches the water discharge destination. The correction can be effectively performed at a high temperature where the adjustment range for adjusting the set temperature is large so that hot water of a desired temperature can be obtained.

  According to the hot and cold water mixing apparatus of the present invention, hot water having a desired temperature can be easily discharged from a plurality of water discharge points.

Next, preferred embodiments of the present invention will be described with reference to the accompanying drawings.
First, with reference to FIG. 1 thru | or FIG. 4, the hot and cold water mixing apparatus by 1st Embodiment of this invention is demonstrated. FIG. 1 is a perspective view showing the entire hot and cold water mixing apparatus according to the first embodiment of the present invention. FIG. 2 is a block diagram of the hot and cold water mixing apparatus of the present embodiment. FIG. 3 is a graph showing the relationship between the set temperature in the hot and cold water mixing apparatus of the present embodiment and the temperature of hot water that is actually discharged. FIG. 4 is a time chart showing the operation of the hot and cold water mixing apparatus of the present embodiment.

As shown in FIG. 1, the hot and cold water mixing apparatus 1 according to the first embodiment of the present invention includes a hand shower head 2, an overhead shower head 4, and a currant 6 which are three water discharge destinations. An operation panel 8 for operating water discharge from the The operation panel 8 includes an operation handle 10 that functions as a temperature adjustment operation unit, three water discharge destination buttons 12a, 12b, and 12c that function as a water discharge destination switching operation unit, a temperature adjustment display unit 14, and a flow adjustment display unit 16a. 16b.
Furthermore, the hot and cold mixing device 1 has a hot and cold mixing device function unit 20 disposed on the back side of the wall surface to which the operation panel 8 is attached.

  The operation handle 10 is a disk-shaped knob provided on the operation panel 8 and can switch between water discharge and water stop from each water discharge destination each time it is pressed. Moreover, the set temperature of the hot water discharged from the hot water mixing apparatus 1 can be changed by rotating the operation handle 10. The temperature set in this way is displayed on the temperature adjustment display unit 14. Further, when the operation handle 10 is pressed for a predetermined time or longer, the flow rate of hot water discharged from the hand shower head 2 and the overhead shower head 4 can be adjusted. The flow rate set in this way is displayed on the flow tone display units 16a and 16b. In addition, in the hot and cold water mixing apparatus 1 of the present embodiment, the water discharge flow rate from the currant 6 is fixed to a predetermined flow rate.

  The water discharge destination buttons 12a, 12b, and 12c are circular push buttons. Water is discharged from the overhead shower head 4 by pressing the water discharge destination button 12a, and from the hand shower head 2 by pressing the water discharge destination button 12b. Water is discharged, and water is discharged from the currant 6 by pressing the water discharge destination button 12c. In this embodiment, when a certain water discharge destination button is pressed during water discharge, water discharge from the water discharge destination is started and water discharge from the previous water discharge destination is stopped.

Next, with reference to FIG. 2, the structure of the hot-water mixing apparatus function part 20 is demonstrated.
The hot water / mixing device function unit 20 includes a mixing valve 22 that is a temperature adjusting unit, a mixing valve driving unit 24 that drives the mixing valve 22, three on-off valves 26 a, 26 b, and 26 c for the hand shower head 2, Two on-off valves 28a and 28b for the overhead shower head 4 and an on-off valve 30 for the curran 6 are incorporated. Further, the hot water / mixing device function unit 20 has constant flow valves 32a, 32b, 32c connected to the downstream sides of the three on-off valves 26a, 26b, 26c, respectively, and downstream of the two on-off valves 28a, 28b, respectively. The connected constant flow valves 34 a and 34 b and the constant flow valve 36 connected to the downstream side of the on-off valve 30 are incorporated.

  Further, a mixing temperature detector 38 for detecting the temperature of hot water mixed by the mixing valve 22 is disposed in the pipe line on the downstream side of the mixing valve 22, and a hot water supply pipe 22 a for supplying hot water to the mixing valve 22 includes: A hot water temperature detector 40 is disposed. Furthermore, the hot water / mixing device function unit 20 is a control unit that controls the mixing valve driving unit 24 and each on-off valve based on signals from the operation panel 8, the mixing temperature detector 38, and the hot water supply temperature detector 40. A controller 42 is built in.

  The mixing valve 22 is configured to discharge hot water adjusted to an appropriate temperature by mixing hot water and water supplied from the hot water supply pipe 22a and the water supply pipe 22b. The mixing ratio of hot water and water mixed in the mixing valve 22 is changed by the mixing valve driving unit 24. The temperature of the hot water flowing out of the mixing valve 22 is detected by the mixing temperature detector 38, and the detection signal is sent to the controller 42. The temperature of hot water supplied to the mixing valve 22 is detected by a hot water supply temperature detector 40, and the detection signal is sent to the controller 42. The controller 42 drives the mixing valve drive unit 24 based on a command signal from the operation panel 8 and detection signals from the mixing temperature detector 38 and the hot water supply temperature detector 40 so that hot water at a predetermined temperature is discharged. The mixing valve 22 is configured to be controlled.

  The hot water flowing out of the mixing valve 22 and passing through the mixed temperature detector 38 is branched into six pipes, and on-off valves 26a, 26b, 26c, on-off valves 28a, 28b, and an on-off valve 30 are connected to each pipe. Has been.

  The on-off valves 26 a, 26 b, and 26 c are hand shower on-off valves that are joined downstream of each on-off valve and connected to the hand shower head 2. In addition, constant flow valves 32a, 32b, and 32c are connected between the on-off valves 26a, 26b, and 26c and the hand shower head 2, respectively, and the water discharge flow rate when the on-off valves 26a, 26b, and 26c are opened. Are adjusted to a large flow rate, a medium flow rate, and a small flow rate, respectively.

  The on-off valves 28 a and 28 b are overhead shower on-off valves, which are joined downstream of each on-off valve and connected to the overhead shower head 4. Further, constant flow valves 34a and 34b are respectively connected between the on-off valves 28a and 28b and the overhead shower head 4, and the discharge water flow when each of the on-off valves 28a and 28b is opened has a large flow rate and a small flow rate. The flow rate is adjusted respectively.

  The on-off valve 30 is an on-off valve for curans, and the downstream side of the on-off valve is connected to the curan 6. In addition, a constant flow valve 36 is connected between the on-off valve 30 and the currant 6 so that the water discharge flow rate when the on-off valve 30 is opened is adjusted to an appropriate amount.

  The controller 42 is configured to control the open / close valves 26a, 26b, 26c, the open / close valves 28a, 28b, and the open / close valve 30 based on a command signal from the operation panel 8 to open and close. Specifically, the controller 42 includes a microprocessor, a memory, and a program (not shown) for operating these.

  Next, with reference to FIG.3 and FIG.4, the effect | action of the hot-water mixing apparatus 1 by 1st Embodiment of this invention is demonstrated. The time chart shown in FIG. 4 shows, in order from the top, the state of discharged water, the selected state of the water discharge destination, the set temperature by the operation handle, and the corrected temperature of hot water discharged from the mixing valve.

As shown in FIG. 3, when the curan 6 is selected as the water discharge destination, the controller 42 sets the hot water at the temperature set by the operation handle 10 and displayed on the temperature adjustment display unit 14 from the mixing valve 22. The mixing valve 22 is controlled so as to be discharged. However, when the hand shower head 2 is selected as the water discharge destination, the controller 42 discharges hot water having a correction temperature higher by ΔA ° C than the set temperature displayed on the temperature adjustment display unit 14 from the mixing valve 22. As a result, the discharge temperature is corrected and the mixing valve 22 is controlled. Further, when the overhead shower head 4 is selected as the water discharge destination, the controller 42 corrects the discharge temperature so that hot water having a correction temperature higher by ΔB ° C. than the set temperature is discharged, and the mixing valve 22 is corrected. To control.
In this embodiment, ΔA is set to about 0.5 ° C. and ΔB is set to about 1 ° C.

  First, at time t1 in FIG. 4, when the user presses the operation handle 10, water discharge is started. At time t1, since the water discharge destination button 12c of the operation panel 8 is pressed, the controller 42 sends a signal to the on-off valve 30 to open it. Thereby, the hot water flowing out from the mixing valve 22 is discharged from the currant 6 through the on-off valve 30 and the constant flow valve 36. At time t1, since the temperature of the discharged hot water is set to T1 ° C., the controller 42 is discharged from the mixing valve 22, and the temperature of the hot water detected by the mixing temperature detector 38 is T1 ° C. The mixing valve 22 is controlled so that

  Next, when the user presses the water discharge button 12b at time t2, the controller 42 sends a signal to the on-off valve 30 to close it, and sends a signal to the on-off valve 26a, 26b or 26c. Open the open / close valve. As a result, the water discharged from the currant 6 is stopped, and the hot water flowing out from the mixing valve 22 is discharged from the hand shower head 2 through the open / close valve and the constant flow valve. Whether the controller 42 opens the opening / closing valve 26a, 26b or 26c depends on the previous setting of the water discharge flow rate, and the opening / closing valve that was opened when the hand shower was used last time is opened.

  At the time t2, the set temperature of the operation unit is T1 ° C. However, since the water discharge from the hand shower head 2 is corrected according to the graph of FIG. 3, the controller 42 detects the mixed temperature detector 38. The mixing valve 22 is controlled so that the temperature of the hot and cold water to be T1 + ΔA ° C. Thus, by discharging water from the hand shower head 2 at a correction temperature different from the set temperature, the temperature of the currant water discharged by the user and the temperature of the hand shower water discharge become equal.

  Further, when the user presses the water discharge button 12a at time t3, the controller 42 sends a signal to any of the on / off valves 26a to 26c, closes it, and sends a signal to the on / off valve 28a or 28b. Open one of the on-off valves. Thereby, the water discharged from the hand shower head 2 is stopped, and the hot water flowing out from the mixing valve 22 is discharged from the overhead shower head 4 through the open / close valve and the constant flow valve.

  At the time t3, the set temperature of the operation unit is T1 ° C. However, since the water discharge from the overhead shower head 4 is corrected according to the graph of FIG. 3, the controller 42 detects the mixed temperature detector 38. The mixing valve 22 is controlled so that the temperature of the hot and cold water to be T1 + ΔB ° C. Thereby, the temperature of the currant water discharged by the user and the temperature of the overhead shower water discharge become equal.

  Next, when the user presses the operation handle 10 at time t4, water discharge from the overhead shower head 4 is stopped. Further, at time t5, when the user presses the water discharge button 12b, the water discharge destination is switched to the hand shower head 2.

  Next, when the user presses the operation handle 10 at time t6, water discharge is started from the hand shower head 2. At this time, the temperature of the hot water discharged from the hand shower head 2 is a corrected temperature T1 + ΔA ° C obtained by correcting the set temperature T1 at the operation unit. Further, at time t7, when the user rotates the operation handle 10 to increase the set temperature to T2, the temperature of the hot water discharged from the hand shower head 2 is corrected to a corrected temperature T2 + ΔA ° obtained by correcting the set temperature T2. C.

  According to the hot and cold water mixing apparatus of the first embodiment of the present invention, the set temperature set by the operation handle is corrected according to the water discharge destination, and hot water at the corrected temperature is discharged. It is not necessary to finely adjust the temperature each time the overhead shower is changed, and hot water at a desired temperature can be easily discharged from each water discharge destination with a single temperature setting.

  In addition, according to the hot and cold water mixing apparatus of the present embodiment, the controller corrects the set temperature so that the correction amount of the set temperature is constant for each water discharge destination, so that the controller can easily calculate the corrected temperature. Can do.

  Next, with reference to FIG.5 and FIG.6, the hot-water mixing apparatus by 2nd Embodiment of this invention is demonstrated. FIG. 5 is a graph showing the relationship between the set temperature in the hot and cold water mixing apparatus of the present embodiment and the temperature of hot water that is actually discharged. FIG. 6 is a time chart showing the operation of the hot and cold water mixing apparatus of the present embodiment.

  In the hot and cold water mixing apparatus of the present embodiment, the correction of the set temperature by the controller is different from that of the first embodiment described above. Accordingly, here, only the points of the present embodiment that are different from the first embodiment will be described, and description of similar points will be omitted.

As shown in FIG. 5, in the present embodiment, when the set temperature is T0, the correction amount of the set temperature is 0, and the correction amount increases as the set temperature increases. Also in the present embodiment, similarly to the first embodiment, when the water discharge destination is Karan 6, the set temperature and the correction temperature match (correction amount = 0). Moreover, in hand shower water discharge and overhead shower water discharge, correction | amendment temperature becomes higher than preset temperature. The inclination k of the graph of the correction temperature with respect to the set temperature shown in FIG. 5 is k = 1 for currant water discharge, k = k _HS for hand shower water discharge, and k = k _OHS for overhead shower water discharge. In the present embodiment, k _HS = about 1.03 and k _OHS = about 1.07.

Therefore, when the set temperature is T ° C, the correction temperature of the hand shower water discharge is k _HS × (T−T0) + T0 ° C, and the correction amount ΔA (T) is
ΔA (T) = (k _HS −1) × (T−T0) ° C.
Can be calculated.
Further, when the set temperature is T ° C, the correction temperature of the overhead shower water discharge is k _OHS × (T−T0) + T0 ° C, and the correction amount ΔB (T) is
ΔB (T) = (k _OHS −1) × (T−T0) ° C.
Can be calculated.

Next, the operation of the hot and cold water mixing apparatus according to the second embodiment of the present invention will be described with reference to FIG.
First, water discharge from the currant 6 is started at time t10 in FIG. Since the set temperature and the correction temperature are the same for the karan water discharge, the temperature of the hot water discharged from the karan is the same as the set temperature T1 ° C. Next, when the water discharge destination is switched to the hand shower at time t11, the correction amount of the hand shower water discharge is from the above equation.
ΔA (T1) = (k _HS −1) × (T1−T0) ° C.
The corrected temperature of the hot water discharged from the hand shower head 2 is T1 + ΔA (T1) ° C.

Furthermore, when the water discharge destination is switched to the overhead shower at time t12, the correction amount of the overhead shower water discharge is from the above equation.
ΔB (T1) = (k _OHS −1) × (T1−T0) ° C
The corrected temperature of the hot water discharged from the overhead shower head 4 is T1 + ΔB (T1) ° C.

  Next, the overhead shower water discharge is stopped at time t13, and the water discharge destination is switched to the hand shower head 2 at time t14. When water discharge is started again at time t15, hot water of T1 + ΔA (T1) ° C. is discharged from the hand shower head 2.

Further, when the set temperature is increased from T1 ° C to T2 ° C at time t16, the correction amount of the hand shower water discharge is:
ΔA (T2) = (k _HS −1) × (T2−T0) ° C
Is calculated. This correction amount ΔA (T2) is larger than the correction amount ΔA (T1) at the set temperature T1. The corrected temperature of the hot water discharged from the hand shower head 2 is T2 + ΔA (T2) ° C.

According to the hot and cold water mixing apparatus of the second embodiment of the present invention, since the correction amount of the set temperature is determined according to the water discharge destination and the set temperature, it can be finely corrected.
Further, according to the hot and cold water mixing apparatus of the present embodiment, the set temperature is corrected so that the correction amount increases as the set temperature increases. Therefore, each time the user switches the water discharge destination, the desired temperature is changed. The correction can be effectively performed at a high temperature at which the adjustment range for adjusting the set temperature is large so that hot water is obtained. The reason why the user can adjust the set temperature at a high temperature is that the amount of heat escaping from the hot water flowing out of the mixing valve to the pipe leading the hot water is proportional to the temperature difference between the pipe and the hot water. Therefore, the higher the set temperature, the greater the amount of heat that escapes from the hot water to the pipeline. Before the hot water discharged from the spout (for example, an overhead shower) touches the user's body, the heat of the hot water is released into the air, causing the temperature to drop. In addition, water discharged from showers such as overhead showers and hand showers In the form, since the water discharge is thin, the surface area where the hot water comes into contact with the air is large, and the heat of the hot water easily escapes into the air as compared with the water discharged from Karan, causing a temperature drop. Therefore, the hot and cold water mixing apparatus according to the present embodiment is suitable for correcting such a temperature drop.

As mentioned above, although preferable embodiment of this invention was described, a various change can be added to embodiment mentioned above. In particular, in the above-described embodiment, the correction amount is changed according to the water discharge destination and the set temperature, but the hot and cold water mixing apparatus may be configured so that the correction amount changes according to the water discharge destination and the water discharge flow rate. it can.
In the above-described embodiment, the number of water discharge destinations is three, but the number of water discharge destinations may be two or four or more, and can be arbitrarily set.

It is a perspective view which shows the whole hot water mixing apparatus by 1st Embodiment of this invention. It is a block diagram of the hot and cold water mixing apparatus according to the first embodiment of the present invention. It is a graph which shows the relationship between the preset temperature in the hot water mixing apparatus by 1st Embodiment of this invention, and the temperature of the hot water actually discharged. It is a time chart which shows the effect | action of the hot water mixing apparatus by 1st Embodiment of this invention. It is a graph which shows the relationship between the preset temperature in the hot / cold water mixing apparatus by 2nd Embodiment of this invention, and the temperature of the hot water actually discharged. It is a time chart which shows the effect | action of the hot and cold water mixing apparatus by 2nd Embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Hot water mixing apparatus by 1st Embodiment of this invention 2 Hand shower head 4 Overhead shower head 6 Karan 8 Operation panel 10 Operation handle (temperature control operation part)
12a, 12b, 12c Water discharge destination button (water discharge destination switching operation unit)
14 Temperature control display unit 16a, 16b Flow control display unit 20 Hot water / mixing device function unit 22 Mixing valve (temperature adjustment unit)
22a Water supply pipe 22b Water supply pipe 24 Mixing valve drive unit 26a, 26b, 26c Open / close valve 28a, 28b Open / close valve 30 Open / close valve 32a, 32b, 32c Constant flow valve 34a, 34b Constant flow valve 36 Constant flow valve 38 Mixing temperature detector 40 Hot water temperature detector 42 Controller (control unit)

Claims (4)

A hot and cold water mixing device that discharges hot water adjusted in temperature to a plurality of water discharge destinations,
A temperature control operation unit for setting the temperature of discharged hot water,
A water discharge destination switching operation unit for switching a water discharge destination for discharging hot water;
A temperature adjusting unit that mixes the supplied hot water and water to generate hot water of a predetermined temperature;
A control unit that controls the temperature adjusting unit based on the temperature set by the temperature adjustment operation unit and the water discharge destination switched by the water discharge destination switching operation unit;
The control unit corrects the set temperature set by the temperature adjustment operation unit according to the water discharge destination switched by the water discharge destination switching operation unit, and the hot water having the corrected correction temperature is discharged. A hot and cold water mixing apparatus that controls the temperature adjusting unit.   The hot and cold water mixing apparatus according to claim 1, wherein the control unit corrects the set temperature so that a difference between the correction temperature and the set temperature is constant for each water discharge destination.   The hot and cold water mixing apparatus according to claim 1, wherein the control unit corrects the set temperature so that a difference between the correction temperature and the set temperature changes according to a water discharge destination and a set temperature.   The hot and cold water mixing apparatus according to claim 3, wherein the controller corrects the set temperature so that a difference between the corrected temperature and the set temperature increases as the set temperature increases.

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