JP3918726B2 - Water heater - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a water heater or a bath water heater having a function of performing automatic hot water in a bathtub.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, as a water heater having a function of automatically hot water in a bathtub, as shown in FIG. 3, a remote controller 22 is provided with a hot water switch 23, a hot water setting switch 24, and an additional hot water switch 25. . When the hot water switch 23 is operated, the hot water supply circuit branches off the hot water supply circuit, measures the amount of hot water supplied to the bathtub from the bath circuit connected to the bathtub, and supplies the hot water set by the hot water setting switch 24 provided on the remote controller 22. When it is done, the hot water stops automatically. When the additional hot water switch 25 is operated when the water level in the bathtub is lowered, a certain amount of hot water is added to stop the hot water.
[0003]
The amount of hot water set at this time is set by the user so that the hot water is supplied from the state where the bathtub is empty and the water level is suitable for bathing. Although it is determined in advance by the control means of the hot water supply device, there are some which are provided with an additional hot water amount switch 26 which is another switch of the remote controller 22 and can be varied (for example, see Patent Document 1).
[0004]
[Patent Document 1]
JP-A-5-231709
[Problems to be solved by the invention]
However, in the above-described conventional technology, when hot water is poured when hot water remains in the bathtub, it is necessary to change the hot water amount set by the hot water amount setting switch 24 every time. When the amount of hot water in the bathtub is reduced and a large amount of additional hot water is required, the additional hot water switch 25 must be operated many times or changed by the additional hot water amount switch 26.
[0006]
Further, the remote controller 22 is provided with a hot water switch 23, a hot water amount setting switch 24, an additional hot water switch 25 and, in some cases, an additional hot water amount switch 26 for changing the additional hot water amount. There was a problem of getting worse.
[0007]
The present invention solves the above-mentioned problem, and simplifies the operation when changing the amount of hot water supplied to the bathtub to a small amount or when a large amount of hot water is required, and reduces the number of switches on the remote controller. This is intended to improve visibility and operability.
[0008]
[Means for Solving the Problems]
In order to achieve the above-mentioned object, the present invention can change the amount of hot water set by the hot water setting switch to the amount of water reduced stepwise according to the time of continuous pressing when the hot water switch is continuously pressed for a certain time. When the operation of pressing the hot water switch is stopped, the hot water operation to the bathtub is started.
[0009]
In addition, even when adding hot water, if the hot water switch is continuously pressed for a certain period of time, the amount of hot water that has been set can be changed from the set hot water level to a level that decreases step by step. It is also used.
[0010]
According to the present invention, since the amount of hot water can be changed by a single operation of the hot water switch without operating the hot water amount setting switch when hot water is applied, the operation becomes easy. Furthermore, since the additional hot water switch and the additional hot water amount setting switch can be eliminated, the number of switches can be reduced and the respective switches can be enlarged to improve the visibility and operability.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
The invention according to claim 1 is a heat exchanger, a heating means for heating the heat exchanger, a bath circuit branched from the outlet hot water supply circuit of the heat exchanger and connected to the bathtub, and an open / close for opening and closing the bath circuit Means, water amount measuring means for measuring the amount of hot water in the bathtub, control means for applying hot water to the bathtub via the bath circuit, hot water switch for controlling hot water operation to the bathtub, and hot water In a water heater equipped with a hot water volume setting switch for changing the hot water volume, when the hot water switch is continuously pressed for a certain period of time, the hot water feeding operation to the bathtub is started, and the hot water volume set by the hot water volume setting switch is changed to the time of continuous pressing. The amount of hot water that has been reduced step by step can be changed without operating the hot water setting switch, and the hot water switch can be turned off at the point of change. Is intended to initiate a hot beam operation, it is possible to fewer changes the hot water alone operation of hot water beam switch capable of improving the operability.
[0012]
In addition to the invention of claim 1, the invention described in claim 2 is provided with a notification device that sounds a notification sound when the amount of hot water is reduced stepwise, and the amount of hot water is reduced stepwise. Since it can be recognized by the notification sound, the hot water volume can be adjusted easily and the operability can be improved.
[0013]
In addition to the invention described in claim 1, the invention described in claim 3 is intended to return the hot water amount to the amount set by the hot water setting switch after the hot water operation is completed. When the hot water is poured from the empty tub, the amount of hot water set by the user is supplied so that the water level is suitable for bathing when the hot tub is empty. Since the hot water can be applied only by operating the hot water switch without resetting the amount of hot water, the operability can be improved.
[0014]
In addition to the invention described in claim 1, the invention described in claim 4 enters the hot water operation, and after the hot water switch is operated again to stop the hot water operation, the amount of hot water is determined by the hot water amount setting switch. When the next hot water is added, the hot water starts from the empty state and the water level is suitable for bathing because the hot water set by the user is supplied. When the hot water is poured from the state where the bathtub is empty, the hot water can be poured only by operating the hot water switch without resetting the amount of hot water, so that the operability can be improved.
[0015]
In addition to the invention of claim 1, the invention of claim 5 is in addition to the invention of claim 1, and the hot water amount is set to the amount set by the hot water amount setting switch after the hot water amount reaches the minimum amount during the pressing operation for a certain period of time. It is possible to improve the operability by continuously pressing the hot water switch and setting the hot water amount from the hot water amount setting switch again even if the hot water hot water amount is less than the intended hot water amount. it can.
[0016]
In addition to the invention of claim 1, the invention described in claim 6 is a switch for setting the amount of hot water in which the amount of hot water is increased stepwise after the hot water switch reaches the minimum amount during the continuous pressing operation of the hot water switch for a certain time. The hot water amount switch is continuously pressed and the hot water amount can be set again from the hot water amount set with the hot water amount setting switch even if the hot water amount is less than the intended hot water amount. Can be improved.
[0017]
In the invention of claim 7, in addition to the invention of claim 1 in particular, the initial set hot water amount reduced stepwise is obtained by multiplying the hot water amount set by the hot water amount setting switch by a certain ratio, and thereafter Even if the amount of change is about 10L step by step, and the set amount of hot water is large, the time until a small amount of hot water is set can be shortened, so that the operability can be improved.
[0018]
The invention described in claim 8 sets the minimum value of the hot water amount setting means and is approximately 20 L which is often used as a fixed value of the conventional addition hot water, so that a small amount of hot water can be supplied and the operability can be improved. it can.
[0019]
【Example】
Example 1
FIG. 1 is a schematic configuration diagram of a water heater according to Embodiment 1 of the present invention. Moreover, FIG. 2 is explanatory drawing of the remote control of the water heater of Example 1. FIG.
[0020]
In FIG. 1, 1 is a heat exchanger, and 2 is provided with heating means for heating the heat exchanger. A water supply circuit 3 for supplying water and a hot water circuit 4 for discharging hot water are connected to the heat exchanger 1. The water supply circuit 3 is provided with an incoming water temperature detection sensor 9 and a water amount measuring means 8 for measuring the amount of hot water. The hot water supply circuit 4 passes through an external pipe via a heat exchanger temperature sensor 10, a water amount control valve 12, and a hot water temperature sensor 13, and is connected to an external hot water tap such as a faucet and a pouring valve 14. It is supplied outside the machine through two hot water supply circuits connected to the bath circuit 6. A bypass control valve 11 branched from the water supply circuit 3 is connected to the water amount control valve 12.
[0021]
Further, an other plug switch 15 and an opening / closing valve 16 are provided between the water supply circuit 3 and the hot water supply circuit 5 to give priority when a hot water supply tap is used during supply to the bath circuit 6.
[0022]
The fuel flows from the fuel inlet through the original solenoid valve 17, the proportional valve 18 that controls the amount of heat generation, and the switching valve 19 that switches the amount of combustion, and burns in the heating means 2 to generate heat. Air necessary for combustion is supplied by a combustion fan 20 that supplies air.
[0023]
The control means 21 controls the entire water heater, and outputs drive signals to a CPU, a RAM, a ROM, an input interface for receiving input signals from various sensors and a control device, and various actuators that constitute a theoretical arithmetic circuit (not shown). It consists of an output interface.
[0024]
A remote controller 22 shown in FIG. 2 is a remote control device for operating a water heater by exchanging signals with the control means 21. The operation switch 27, the hot water switch 23, the hot water amount setting switch 24, the hot water temperature setting switch 28, A hot water temperature setting switch 29 and a display 30 are provided.
[0025]
When supplying hot water to the normal bath circuit 6, the operation switch 27 of the remote controller 22 is turned “ON”, and after setting with the hot water temperature setting switch 29 and the hot water amount setting switch 24, the hot water switch 23 is turned “ON”. As a result, the pouring valve 14 is opened, hot water is supplied to the bath circuit 6, a signal from the water amount measuring means 8 is sent to the control means 21, and when the set amount of hot water is reached, the pouring valve 14 is closed and hot water is poured. To stop. Further, when the hot water temperature setting switch 29 and the hot water amount setting switch 24 are set, the values are stored until the next set value is changed.
[0026]
When the amount of hot water in the bathtub 7 decreases and hot water is added When the hot water switch is set to “ON”, the hot water amount is supplied when the bathtub 7 is empty. It may overflow. In addition, when adding hot water using the conventional hot water switch 25, it is necessary to operate the hot water switch 25 several times.
[0027]
In the present invention, when the hot water switch 23 is continuously pressed for a certain time (for example, 2 seconds or longer), the hot water amount changing means for hot water filling the amount of hot water that has been gradually reduced from the hot water amount set by the hot water amount setting switch 24 according to the time of continuous pressing. Can be changed without operating the hot water setting switch 24, and when the hot water switch is depressed at the time of the change, the hot water feeding operation to the bathtub is started. Therefore, the operability can be improved.
[0028]
If the hot water switch is kept pressed for a long time (for example, 20 seconds or longer), the switch may be broken or mischievous, so the hot water switch is “OFF” and the hot water operation is not performed.
[0029]
(Example 2)
In the invention of the second embodiment, when the hot water switch 23 described in the first embodiment is continuously pressed for a predetermined time (for example, 2 seconds), the amount of hot water set by the hot water setting switch 24 is gradually reduced according to the time of the continuous pressing. A hot water amount changing means for filling the amount of hot water and a notifying means linked thereto are provided. When the hot water value changes, the numerical value of the display 30 changes and a notification sound is generated, thereby improving the operability. Can do.
[0030]
(Example 3)
The invention of the third embodiment is such that after the hot water filling operation is completed by the operation of the first embodiment, the control means 21 is provided with a reset means so that the hot water amount returns to the hot water amount set by the hot water amount setting switch 24. The next time the hot water is poured, the hot water is set by the user so that the hot water starts from the state where the bathtub 7 is empty and the water level is suitable for bathing. In the case of performing hot water, the hot water can be heated only by operating the hot water switch 23 without resetting the amount of hot water, so that the operability can be improved.
[0031]
Example 4
In the invention of the fourth embodiment, after entering the hot water operation by the operation of the first embodiment and operating the hot water switch again to stop the hot water operation, a reset means is provided and the hot water amount is set by the hot water setting switch. The next time the hot water is poured, the hot water starts from the empty tub and the water level is suitable for bathing. When hot water is poured from an empty state, hot water can be poured only by operating the hot water switch without resetting the amount of hot water, so that the operability can be improved.
[0032]
(Example 5)
In the invention of the fifth embodiment, when the hot water switch 23 is continuously pressed by the operation of the first embodiment to enter the hot water amount change mode, a hot water amount repeat function is added to the control means 21, and the hot water switch 23 is kept constant. After the hot water amount reaches the minimum amount during the time continuous pressing operation, the hot water amount returns to the hot water amount set by the hot water amount setting switch 24. The hot water switch 23 is continuously pressed and the hot water amount is intended. Even if the amount is smaller, the amount of hot water can be set again from the amount of hot water set by the hot water amount setting switch, so that the operability can be improved.
[0033]
(Example 6)
In the invention of the sixth embodiment, when the hot water switch 23 is continuously pressed by the operation of the first embodiment to enter the hot water amount change mode, the hot water switch 23 is added to the control means 21 for a certain period of time. During the continuous pushing operation, the amount of hot water reaches a minimum amount after reaching the minimum amount, and returns to the amount of water set by the hot water setting switch 24. The hot water switch 23 is continuously pressed to Even if the amount of hot water is less than the intended amount of hot water, the amount of hot water that increases in steps can be set again, so that the operability can be improved.
[0034]
(Example 7)
In the invention of the sixth embodiment, when the hot water switch 23 is continuously pushed by the operation of the first embodiment to enter the hot water amount changing mode, the initial set hot water amount reduced stepwise by the control means 21 is the hot water amount setting switch 24. For example, if the constant is set to 0.6 and the set amount of hot water is 200L, 0.6X200 = 120L is continuously pressed and the hot water switch 23 is continuously pressed to enter the hot water amount change mode. When the amount of hot water set is the first set amount at that time, and thereafter, the amount of change is set in increments of 10 L, and even when the amount of hot water set is large, the time until a small amount of hot water is set can be shortened, so that the operability can be improved.
[0035]
The reason why the unit is 10 L is that it is determined that about 10 L unit is appropriate as the minimum change amount because it is about 180 to 250 L in the case of a standard household bathtub.
[0036]
(Example 8)
When the hot water switch 23 is continuously pressed by the operation of the first embodiment to enter the hot water amount change mode, the invention of the eighth embodiment sets the minimum value of the hot water amount setting means, and sets the fixed value of the conventional addition hot water. The hot water switch 23 that can supply a small amount of hot water, which has been widely used, can be used as the hot water switch 23 and the conventional hot water switch 26, so that the operability can be improved.
[0037]
The reason why the 20 L unit is used is that, as in the case of Example 7, when a standard home tub is assumed, it is determined that the minimum amount of hot water that can be recognized by the user is about 20 L.
[0038]
【The invention's effect】
As described above, according to the present invention, the following effects can be obtained.
[0039]
When the hot water switch is pressed continuously for a certain period of time, the hot water setting switch is operated by providing a hot water volume changing means for hot water that is gradually reduced from the hot water set by the hot water setting switch according to the time of continuous pressing. Therefore, the operability can be improved.
[0040]
Further, by reducing the number of switches, visibility is improved, and operability and usability can be further improved.
[Brief description of the drawings]
FIG. 1 is a block diagram of a first embodiment of the present invention. FIG. 2 is an explanatory diagram of a remote control according to a first embodiment of the present invention.
DESCRIPTION OF SYMBOLS 1 Heat exchanger 2 Heating means 4 Hot water circuit 6 Bath circuit 8 Water quantity measuring means 14 Pouring valve (opening / closing means)
21 Control means 23 Hot water beam switch 24 Hot water volume setting switch

Claims (8)

A heat exchanger, heating means for heating the heat exchanger, a bath circuit branched from an outlet hot water supply circuit of the heat exchanger and connected to the bathtub, an opening / closing means for opening and closing the bath circuit, and the bathtub Water volume measuring means for measuring the amount of hot water, control means for applying hot water to the bathtub via the bath circuit, hot water switch for controlling the hot water operation to the bathtub, and changing the amount of hot water In a water heater provided with a hot water amount setting switch, when the hot water beam switch is continuously pressed for a certain period of time, a hot water filling operation to the bathtub is started and a step is performed according to the time of continuous pressing from the hot water amount set by the hot water amount setting switch. A hot water supply apparatus provided with means for changing the amount of hot water that is used to reduce the amount of hot water that has been reduced. The hot water heater according to claim 1, further comprising a notification device that sounds a notification sound when the amount of hot water is gradually reduced. The hot water heater according to claim 1, wherein after the hot water filling operation is completed, the hot water hot water amount returns to the hot water amount set by the hot water amount setting switch. 2. The water heater according to claim 1, wherein after the hot water switch is operated again and the hot water operation is stopped, the hot water amount returns to the amount set by the hot water setting switch. The hot water supply device according to claim 1, wherein the hot water hot water switch returns to the hot water amount set by the hot water amount setting switch after the hot water hot water amount reaches the minimum hot water amount during an operation of continuously pressing the hot water switch. 2. The water heater according to claim 1, wherein the hot water hot water amount is increased stepwise after the hot water hot water amount reaches a minimum hot water amount during an operation of continuously pushing the hot water switch. The hot water heater according to claim 1, wherein the first set amount of hot water reduced stepwise is obtained by multiplying the amount of hot water set by the hot water amount setting switch by a fixed ratio, and thereafter, the amount of change is about 10 L in steps. The water heater according to claim 1, wherein the minimum amount of hot water reduced stepwise is about 20L.

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