Hot water supply equipment

Abstract

To provide a water heater which has a simple structure, and which has drop-in hot water supply operation in which hot water of a hot water supply preset hot water amount which is set beforehand is supplied into a hot water supply plug.SOLUTION: A control device 19 has drop-in hot water supply control means 20 which performs operation control of drop-in hot water supply for supplying hot water of a hot water supply preset hot water amount which is set beforehand to a plurality of hot water supply plugs 3. A remote control 11 which has operation means that can set a hot water supply preset temperature and the hot water supply preset hot water amount includes: addition switch 15 which adds the hot water supply preset hot water amount by the predetermined hot water amount to the hot water supply preset hot water amount; and notification means capable of causing the completion of drop-in hot water supply to be notified of. When the addition switch 15 is pressed, the drop-in hot water supply control means 20 adds the predetermined hot water amount to the hot water supply preset hot water amount, and when an integrated value from the drop-in hot water supply start detected by a hot water amount sensor 9 has reached the hot water supply preset hot water amount, it allows the notification means to notify that the drop-in hot water supply has been completed, and returns the added hot water supply preset hot water amount to the hot water supply preset hot water amount before the addition.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a water heater having a drop hot water supply operation for supplying a preset amount of hot water to a hot water tap. [Background technology]

[0002] Conventionally, in this type of device, as disclosed, for example, in JP 2005-180903 A, a drop-in type water heater has been disclosed that, when hot water is used in the kitchen or washroom while the water is being dropped into the bathtub, the amount of hot water supplied to the bathtub is reduced by the amount of hot water supplied to the kitchen or washroom. This problem is solved by a drop-in type water heater that uses a first flow meter installed in the hot water supply piping and a second flow meter installed in the fixed quantity stop valve to reliably fill the bathtub with only the desired amount of hot water. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2005-180903 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, with this conventional system, it was necessary to use a fixed-volume stop valve with an internal flow meter as a dedicated component for the drop-in hot water supply operation, and when using only one flow meter for drop-in hot water supply, it was necessary to accurately know how much hot water had been supplied to the drop-in hot water supply destination from multiple hot water supply destinations, which required a complex configuration and control. [Means for solving the problem]

[0005] In order to solve the above problems, the present invention provides a hot water supply device equipped with a control device for controlling a hot water supply operation to supply hot water at a preset hot water supply temperature to a plurality of hot water taps, and a hot water volume sensor for detecting the volume of hot water supplied, the control device being provided with a drop-in hot water supply control means for controlling drop-in hot water supply to supply hot water at a preset hot water supply volume to the plurality of hot water taps, and a remote controller having an operation means for setting the hot water supply volume and the hot water supply volume is provided with an addition switch for adding a predetermined volume of hot water to the hot water supply volume and a notification means for notifying completion of the drop-in hot water supply, and the drop-in hot water supply control means: After the hot water tap is opened and hot water supply begins, When the addition switch is pressed, a predetermined amount of hot water is added to the set hot water supply amount, and when the integrated value from the start of the drop-in hot water supply detected by the hot water amount sensor reaches the set hot water supply amount, the notification means notifies that the drop-in hot water supply has been completed, and the added set hot water supply amount is returned to the set hot water supply amount before the addition.

[0006] The hot water supply device further includes an on-off valve for stopping the supply to the hot water tap when the accumulated value from the start of the drop-in hot water supply detected by the hot water volume sensor reaches the set hot water supply volume, and the drop-in hot water supply control means adds a predetermined amount of hot water to the set hot water supply volume when the addition switch is pressed, and closes the on-off valve to stop the supply when the accumulated value of the hot water volume sensor reaches the set hot water supply volume.

[0007] The set hot water supply amount is changed by adding a predetermined amount of hot water to the set hot water supply amount in increments according to the number of times the addition switch is pressed. Effect of the Invention

[0008] As described above, according to this invention, with a simple configuration that is the minimum required for a water heating device, it is possible to perform a drop-in hot water supply operation that supplies a preset amount of hot water to the hot water tap, and even if the user accidentally supplies hot water to a destination other than the drop-in hot water supply destination during the drop-in hot water supply operation, the user can press an addition switch to add a specified amount of hot water to the preset amount of hot water supply, thereby easily compensating for the amount used other than the drop-in hot water supply destination, thereby providing a water heating device with a drop-in hot water supply operation function that is very easy to use.

[0009] In addition, when the drop-in hot water supply operation is completed, the amount added with the addition switch is reset, so the next time drop-in hot water supply is performed, there is no need to reset the set hot water supply amount, making it easy to use. [Brief description of the drawings]

[0010] [Figure 1] Schematic diagram of the first embodiment [Diagram 2] A flowchart explaining the drop hot water supply operation of the first embodiment DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] Next, a water heater according to an embodiment of the present invention will be described with reference to the drawings. Reference numeral 1 denotes a fin-and-tube heat exchanger, which is provided with a water supply pipe 2 connected to a water pipe on the upstream side of the heat exchanger 1, and a hot water supply pipe 4 terminated in a hot water tap 3 on the downstream side. In addition, there are multiple hot water taps 3, including a hot water tap 3a that supplies hot water to the kitchen and washroom, and a hot water tap 3b that supplies hot water to a bathtub 5.

[0012] Reference numeral 6 denotes a water supply bypass pipe that branches off from the water supply pipe 2, bypasses the heat exchanger 1, and is connected to the hot water supply pipe 4, and reference numeral 7 denotes a mixing valve that mixes the high-temperature water heated by the heat exchanger 1 with the water supply from the water supply bypass pipe 6.

[0013] Reference numeral 8 denotes a water supply temperature sensor provided upstream of the branch point of the water supply bypass pipe 6 of the water supply pipe 2, which detects the water supply temperature at any time. The hot water supply pipe 4 is provided with a hot water volume sensor 9 which detects the amount of hot water flowing through the hot water supply pipe 4 and the accumulated value, and a hot water temperature sensor 10 which detects the temperature of the hot water flowing through the hot water supply pipe 4.

[0014] Reference numeral 11 denotes a remote control provided in at least one or both of the kitchen and the bathroom, and is equipped with a hot water temperature setting means 12 which is an operating means by which the desired hot water temperature can be set, a hot water amount setting means 13 which is an operating means by which the desired hot water amount can be set, a drop-in hot water supply start switch 14 which instructs the start of drop-in hot water supply as described below, an addition switch 15 which adds a predetermined amount of hot water to the set hot water amount for drop-in hot water supply, a speaker 16 which is an alerting means which generates pre-stored voices and sounds to communicate information to the user, and a display unit 17 which is an alerting means which displays letters, marks, etc. on a screen to communicate information to the user.

[0015] Reference numeral 16 denotes a heating means for heating water via heat exchanger 1, and the amount of heating is controlled by control device 19 consisting of a microcomputer, which receives signals from water supply temperature sensor 8, hot water volume sensor 9, and hot water temperature sensor 10 as inputs so that the hot water supply set temperature matches the hot water temperature detected by hot water temperature sensor 10, in order to achieve the set hot water supply temperature. Supplying hot water to the hot water tap 3 at this desired hot water supply set temperature is the hot water supply operation, and drop hot water supply operation is the operation of supplying the amount of hot water equal to the set hot water supply volume included in the hot water supply operation.

[0016] Furthermore, when an instruction for drop hot water supply operation is received from drop hot water supply start switch 14 of remote control 11, a signal is sent to control device 19 to start drop hot water supply operation for supplying a set amount of hot water at a preset hot water supply temperature to hot water tap 3. Control device 19 is provided with drop hot water supply control means 20 for controlling the drop hot water supply operation for supplying the set amount of hot water.

[0017] Reference numeral 19 denotes an on-off valve, and when the accumulated value from the start of the drop-in hot water supply detected by the hot water volume sensor 9 reaches the set hot water supply volume, the drop-in hot water supply control means 20 closes the on-off valve 21 to stop the supply to the hot water tap 3.

[0018] Next, the operation of this drop hot water supply operation will be described with reference to the flow chart of FIG. Before performing the drop hot water supply operation, the user operates remote control 11 in advance to set the hot water supply temperature in bathtub 5 to, for example, 42° C. and the hot water supply amount to, for example, 200 L.

[0019] First, it is confirmed whether the drop-in hot water supply start switch 14 is turned ON (S1). When the drop-in hot water supply start switch 14 is turned ON (S1 is Yes), the user opens the hot water tap 3b (S2 is Yes) and the hot water volume sensor 9 installed on the hot water supply pipe 4 detects water flow (S3 is Yes). The drop-in hot water supply control means 20 then controls the opening of the mixing valve 7 to supply hot water at the hot water supply set temperature of 42°C, thereby starting drop-in hot water supply, and begins accumulating the amount of hot water that has passed through the hot water volume sensor 9 since the water flow was detected (S4).

[0020] Then, the drop-in hot water supply control means 20 checks whether the addition switch 15 has been pressed during the drop-in hot water supply operation (S5), and if it remains unpressed (S5 is No) and the accumulated amount of hot water passing through the hot water volume sensor 9 reaches the set hot water supply amount (here, 200 L) (S8 is Yes), it closes the opening / closing valve 21 (S9), terminating the drop-in hot water supply operation, and issues a voice or buzzer sound through the speaker 16 of the remote control 11 to notify the user that filling the water tank is complete (S10).

[0021] Then, the drop hot water supply control means 20 checks whether the addition switch 15 has been pressed during the drop hot water supply operation to add to the set hot water supply amount (S11), and if it has not been pressed (S11 is No), completes the drop hot water supply operation.

[0022] In addition, the drop-in hot water supply control means 20 checks whether the addition switch 15 has been pressed during the drop-in hot water supply operation (S5), and if the addition switch 15 has been pressed (S5 is Yes), it adds a predetermined amount of hot water (here, for example 10L) to the previously set hot water supply amount (here, 200L) (S6), setting the set hot water supply amount to 210L (S7).

[0023] At this time, if the user feels that too much hot water has been dispensed to a destination other than the drop-in hot water supply destination (here, bathtub 5), the user can press the addition switch 15 multiple times to dispense hot water in an amount close to the amount of hot water set by the user into the bathtub 5.

[0024] Then, when the accumulated amount of hot water passing through the hot water volume sensor 9 reaches a value obtained by adding a predetermined amount of hot water to the set hot water supply volume (here, 210 L) (S8 is Yes), the opening / closing valve 21 is closed (S9), ending the drop-in hot water supply operation, and the speaker 16 of the remote control 11 issues a voice or buzzer sound to notify the user that filling the tub is complete (S10).

[0025] Then, the drop-in hot water supply control means 20 checks whether the addition switch 15 has been pressed during the drop-in hot water supply operation to add to the set hot water supply amount (S8), and if the addition switch 15 has been pressed (S11 is Yes), it resets the amount of hot water added by the amount that the addition switch 15 was pressed, and returns it to the original set hot water supply amount (S12), thereby completing the drop-in hot water supply operation.

[0026] Thereafter, the drop hot water supply start switch 14 is turned OFF, or the on-off valve 21 is opened after a predetermined time has elapsed, etc., so that hot water supply operation can be performed.

[0027] In this way, with a simple configuration that has the minimum necessary equipment required for a water heating device, it is possible to perform a drop-in hot water supply operation that supplies a preset amount of hot water to the hot water tap 3b, and even if the user accidentally supplies hot water in the kitchen or bathroom during the drop-in hot water supply operation (in this case, drop-in hot water supply operation to the bathtub 5), the user can press the addition switch 15 to add a specified amount of hot water to the preset amount of hot water supply, and easily compensate for the amount used in a destination other than the drop-in hot water supply destination, thereby providing a water heating device with a drop-in hot water supply operation function that is very easy to use.

[0028] In addition, when the addition switch 15 is pressed during drop-in hot water supply, which supplies hot water only at the preset hot water supply setting, a specified amount of hot water is added to the preset hot water supply setting. When the drop-in hot water supply is completed, the specified amount of hot water added is reset and the preset hot water supply setting is restored. This allows the user to decide whether or not to add to the hot water supply setting only when hot water is supplied to a destination other than the drop-in hot water supply destination (in this case, the kitchen or bathroom). In addition, when the drop-in hot water supply is completed, the amount added by the addition switch 15 is reset, so the next time drop-in hot water supply is performed, there is no need to reset the hot water supply setting, making it easy to use.

[0029] In addition, when the addition switch 15 is pressed multiple times, a specified amount of hot water is added according to the number of times it is pressed (for example, +10L, +20L, +30L, etc.), so that the user can select any number of times and press the addition switch 15, thereby ensuring that an amount of hot water close to the desired set amount of hot water is dispensed.

[0030] The present invention is not limited to the embodiments, and modifications may be made without departing from the spirit and scope of the invention. For example, in the present invention, hot water is supplied by a combustion device as heating means 18, but a hot water storage type hot water supply device in which hot water is stored in a hot water storage tank in advance, an electric water heater, or the like may also be used.

[0031] In addition, in the embodiment of the present invention, the notification means is speaker 16 that notifies by voice, but the notification content may be displayed on display unit 17, which is the screen of remote control 11, or the notification may be given by both display unit 17 and speaker 16.

[0032] In addition, in the embodiment of the present invention, the hot water supply amount setting means 13 is provided with a switch as an operating means, but there is no need to provide a separate operating means, and the setting may be made by operating a menu using other switches provided on the remote control 11 while checking the display unit 17 of the remote control 11. By making the hot water supply amount setting means 13 for drop-in hot water supply, which is changed less frequently, the usefulness of the addition switch 15, which can add a specified amount of hot water with a simple configuration in accordance with hot water supply use in the kitchen or washroom while drop-in hot water supply is being supplied to the bathtub 5, can be increased. [Explanation of symbols]

[0033] 2 Water supply pipe 3 Hot water tap 4 Hot water pipe 7 Mixing valve 9 Water volume sensor 10 Hot water temperature sensor 11 Remote Control 12 Hot water temperature setting means (operation means) 13 Hot water supply amount setting means (operation means) 14 Drop-in hot water supply start switch 15 Addition Switch 16 Speaker (notification means) 17 Display section 18 Heating means 19 Control device 20 Drop-in hot water supply control means 21 On-off valve

Claims

1. A hot water supply device including a control device for controlling a hot water supply operation that supplies hot water at a preset hot water supply temperature to a plurality of hot water taps, and a hot water amount sensor for detecting the amount of hot water supplied, The control device includes a drop hot water supply control means for controlling a drop hot water supply to supply a preset amount of hot water to the plurality of hot water taps, A remote controller having an operation means for setting the hot water supply setting temperature and the hot water supply setting amount is provided with an addition switch for adding a predetermined amount of hot water to the hot water supply setting amount, and a notification means for notifying completion of the drop hot water supply, The drop-in hot water supply control means adds a predetermined amount of hot water to the set hot water supply volume when the addition switch is pressed after the hot water tap is opened to start supplying hot water, and when the integrated value from the start of the drop-in hot water supply detected by the hot water volume sensor reaches the set hot water supply volume, the notification means notifies that the drop-in hot water supply has been completed and the added set hot water supply volume is returned to the set hot water supply volume before the addition.

2. The hot water supply device includes an opening / closing valve that stops the supply of hot water to the hot water tap when an integrated value from the start of the drop hot water supply detected by the hot water amount sensor reaches the hot water supply setting amount, The hot water supply device of claim 1, characterized in that when the addition switch is pressed, the drop hot water supply control means adds a predetermined amount of hot water to the set hot water supply volume, and when the integrated value of the hot water volume sensor reaches the set hot water supply volume, closes the opening / closing valve to stop the supply.

3. 3. The hot water supply device according to claim 1, wherein the set amount of hot water to be supplied is changed by adding a predetermined amount of hot water to the set amount of hot water to be supplied in increments according to the number of times the addition switch is pressed.

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