JP6211980B2 - Hot water storage water heater - Google Patents

Description

  The present invention relates to a hot water storage type hot water supply machine that fills a bathtub.

  Conventionally, this type of hot water storage type hot water heater warms the water supplied from the water supply by heating means, stores the warmed hot water in a hot water storage tank or the like, and supplies hot water in the hot water storage tank according to the purpose of use.

Conventionally, when you want to shorten the hot water filling time in the hot water bathing operation of a hot water storage type water heater, learn the time taken by the hot water filling up to the previous time to make the hot water filling operation more efficient or perform the remaining hot water check operation. By omitting, there was a high-speed water filling operation that shortened the time from the start of the bath water filling operation to the completion of the bath water filling.

  For example, the water level detection means in the bathtub detects the water level in the bathtub in the middle of the hot water filling operation, and the hot water pouring mode that does not detect the water level in the middle of the hot water filling operation. When the user recognizes that there is no remaining hot water in the bathtub, there is one that can perform high-speed hot water filling in the high-speed pouring mode (Patent Document 1).

JP-A-11-294847

  However, in the case of Patent Document 1, although the time required for water level detection can be shortened, the time for hot water filling is shortened. However, in high-speed hot water filling control, the amount of hot water itself is the same as the amount of hot water during normal control. As the amount of hot water bathing increased, the proportion of time shortened with respect to the overall hot water bathing time became smaller.

In order to solve the above problems, a hot water storage tank for storing hot water, a hot water discharge pipe for extracting hot water from the upper part of the hot water storage tank, a water supply pipe for supplying water to the hot water storage tank, high-temperature water from the hot water discharge pipe, and the water supply pipe A hot water mixing valve for mixing hot water, a hot water pipe through which hot water mixed by the hot water mixing valve flows, a hot water flow sensor for detecting a flow rate of hot water flowing through the hot water pipe, and a hot water tap for opening and closing the hot water pipe A bath mixing valve for mixing hot water from the hot water pipe and water from the water supply pipe, a hot water pipe through which hot water mixed by the bath mixing valve flows, and a flow rate of hot water flowing through the hot water pipe. A hot water flow sensor for detecting and an electromagnetic valve for opening and closing the hot water pipe, and further calculating a total integrated value of the hot water flow sensor and the hot water flow sensor, A control device for closing, a remote controller connected to be able to communicate with the control device, and a high-speed hot water filling switch for supplying hot water from the hot water supply pipe and hot water from the hot water filling pipe provided to the remote control to the bathtub at the same time; A hot water storage hot water supply apparatus provided with a speaker provided on the remote control for prompting a user to perform a predetermined operation, wherein the hot water from the hot water supply pipe and the hot water from the hot water supply pipe are simultaneously discharged into the bathtub . , When the total integrated value calculated by the control device reaches a value smaller than the hot water set amount by a predetermined value, the speaker is informed to close the hot water tap, and the total calculated by the control device When the integrated value reaches the set amount of hot water filling in the bathtub, the control device informs that the solenoid valve is closed and the hot water tap is closed via the speaker.

In addition, in a high-speed hot water supply where hot water from the hot water supply pipe and hot water from the hot water supply pipe are discharged to the bathtub at the same time, a hot water supply set temperature that is a mixing target temperature by the hot water mixing valve is a mixing target by the bath mixing valve. When the temperature is different from the bath set temperature, the control device is provided with temperature changing means for changing the opening of the hot water mixing valve so that the hot water set temperature becomes the bath set temperature.

As described above, according to the present invention, the hot water filling can be performed from the hot water tap of the hot water supply route in addition to the normal hot water filling route at the time of high-speed hot water filling, so that the flow rate per hour to the bathtub increases. The time required for stretching can be shortened, and since the total integrated value of the amount of hot water filling is calculated by the control device, the hot water filling can be performed so as to become the hot water filling set amount.

1 is a schematic configuration diagram of a hot water storage type water heater according to a first embodiment of the present invention. The flowchart figure for demonstrating 1st Embodiment of this invention. The flowchart figure for demonstrating 2nd Embodiment of this invention.

A first embodiment of a hot water storage type water heater according to the present invention will be described with reference to FIG.
1 is a hot water storage tank for storing hot water, 2 is a water supply pipe for supplying water to the hot water storage tank 1, 3 is a heat pump heating means for heating water pumped from the lower part of the hot water storage tank 1, and 4 is a hot water pipe connected to the upper part of the hot water storage tank 1. It is.

  5 is a hot water supply bypass pipe that branches off in the middle of the water supply pipe 2, and 6 is a hot water supply that mixes high-temperature water taken out from the hot water storage tank 1 and the hot water supply water bypass pipe 5 at an appropriate ratio to adjust to a preset hot water supply temperature. A mixing valve, 7 is a hot water pipe through which hot water mixed by the hot water mixing valve 6 flows, 8 is a hot water flow sensor that detects the flow rate through the hot water pipe 7, and 9 is a hot water thermistor that detects the temperature of hot water flowing through the hot water pipe 6. Reference numeral 10 denotes a hot-water tap such as a shower that the user opens and closes.

  11 is a bath water supply bypass pipe that branches in the middle of the water supply pipe 2, and 12 is a bath that adjusts the hot water of the hot water storage tank 1 taken out and the water supply of the water supply bypass pipe 11 for bathing to a bath set temperature by mixing at an appropriate ratio. Mixing valve, 13 is a hot water pipe through which hot water mixed in the bath mixing valve 12 flows, 14 is a hot water flow sensor for detecting the flow rate flowing through the hot water pipe 13, and 15 is an electromagnetic valve for opening and closing the hot water pipe 13. 16 is a hot water thermistor that detects the temperature of hot water flowing through the hot water tube 13, and 17 is a bathtub.

  18 is a bath pipe that is a reheating path of the bath, 19 is a bath thermistor that detects the temperature of the bath, 20 is a bath heat exchanger provided for exchanging heat with hot water in the hot water storage tank 1, and 21 is a reheating. This is a bath three-way valve that switches the flow path so as to bypass the bath heat exchanger 20 in the middle of the pipe 18.

  Reference numeral 22 is a microcomputer and the like is a control device that controls the operation of the device by performing predetermined calculations based on the output of each sensor and controls the opening and closing of the electromagnetic valve 15, and 23 is a temperature change that changes the opening of the hot water mixing valve Means 24 has an operation unit that can be appropriately changed by the user to change the hot water supply set temperature, which is the set temperature of hot water and bath, and the hot water set temperature, which is the set temperature of the hot water, and the hot water set amount. The remote controller 25 is connected to the control device 16 so as to be communicable, 25 is a bath hot water switch, 26 is a high speed hot water switch that can complete the hot water filling earlier than the bath hot water switch, and 27 is a control device 22. Based on the calculated result, the speaker notifies the hot water filling completion report or prompts the user to perform a predetermined action.

Next, the boiling operation will be described.
When there is a request for boiling, a circulating pump (not shown) in the middle of the pipe connecting the hot water storage tank 1 and the heat pump heating means 3 is driven to draw water from the lower part of the hot water storage tank 1 and warm it with the heat pump heating means 3 to store hot water. By continuing the operation of returning to the upper part of the tank 1, the water in the hot water storage tank 1 is gradually boiled up to high temperature water.

Next, the hot water supply operation will be described.
When the hot water tap 10 is opened, water is supplied from the water supply pipe 2 and flows into the lower part of the hot water storage tank 1, passes through the hot water supply water supply bypass pipe 5, and is pushed out of the hot water storage tank 1 from the upper part of the hot water storage tank 1. Hot water is mixed from the hot water mixing valve 7 and hot water adjusted so that the set temperature of hot water supply and the temperature detected by the hot water supply thermistor 9 are the same is supplied from the hot water tap 10.

The hot water filling operation will be described.
When the bath hot water switch 24 of the remote controller 24 is pressed, the control device 22 opens the solenoid valve 15 to supply water from the water supply pipe 2 and flow into the lower part of the hot water storage tank 1, and the water supply bypass pipe 11 for bath The hot water pushed out from the upper part of the hot water storage tank 1 and the water supply in the bath water supply bypass pipe 11 are mixed by the hot water mixing valve 12 so that the bath set temperature and the temperature detected by the hot water thermistor 16 are the same. The adjusted hot water is bypassed by the bath three-way valve 21 and flows into the bathtub 17 so that the hot water filling is started. Then, when the flow rate of water flowing is detected by the hot water filling flow sensor 14 and the total integrated value of the flow rate has flowed for the hot water filling set amount, the controller 22 closes the solenoid valve 15 to complete the hot water filling. .

Here, a high-speed hot water filling operation that simultaneously performs a hot water supply operation and a hot water filling operation will be described with reference to the flowchart of FIG.

When the high-speed hot water filling switch 26 is pressed (S1), it is confirmed that the hot water supply operation is not performed (S2), and if the hot water supply operation is performed, the speaker 27 informs that the hot water tap 10 is closed. (S3) When hot water is not supplied, the controller 22 opens the solenoid valve 15 (S4), and the hot water filling operation on the bath side is started.

Then, the temperature changing means 23 changes the temperature by changing the opening of the hot water mixing valve 6 so that the hot water supply set temperature becomes the same as the bath set temperature (S5), and the control device 22 opens the hot water tap 10 of the bathtub 17. In this way, the speaker 27 provided on the remote control 24 notifies the user (S6), and the user opens the hot-water tap 10 and directly supplies hot water to the bathtub 17, so that hot water having the temperature changed to the bath set temperature is transferred from the hot-water tap 10 to the bathtub. 17 is started. As a result, high-speed hot water filling that simultaneously performs manual hot water filling operation on the hot water supply side and automatic hot water filling operation on the bath side is started.

When the total integrated value of the flow rate of the hot water flow sensor 8 for detecting the hot water flow rate and the hot water flow sensor 14 for detecting the hot water flow rate reaches the hot water set amount (S7), the hot water tap 10 is closed. To stop the hot water filling operation on the hot water supply side and switch the solenoid valve 15 to the closed state to end the hot water filling operation on the bath side (S8). Then, the user who has received the notification closes the hot-water tap 10 to stop the hot-water filling operation on the hot-water supply side, and the control device 22 restores the hot-water supply set temperature (S9), thereby completing the high-speed hot water filling.

As described above, the hot water filling operation is performed by the hot water filling operation on the hot water supply side and the hot water filling operation on the bath side, so that the flow rate per hour to the bathtub 17 is higher than that of the normal hot water filling. Filling can be completed sooner than when filling. In addition, since the hot water tap 10 provided in the bathtub 17 uses a shower or a faucet, it is not necessary to perform extra work on the tank unit or the bathtub 17 and therefore can be easily changed without increasing the cost due to additional parts. Can do.

Next, a second embodiment will be described based on the flowchart of FIG. Here, the same components as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.

When the high-speed hot water filling switch 25 is pressed (S10), it is confirmed that the hot water supply operation is not performed (S11), and if the hot water supply operation is performed, the speaker 27 is informed to close the hot water tap 10. (S12) When hot water is not supplied, the controller 22 opens the electromagnetic valve 15 (S13), and the hot water filling operation on the bath side is started.

Then, the temperature changing means 23 changes the temperature by changing the opening of the hot water mixing valve 6 so that the hot water supply set temperature becomes the same as the bath set temperature (S14), and the control device 22 opens the hot water tap 10 of the bathtub 17. In such a manner, the speaker 27 provided on the remote control 24 is notified (S15), and the user opens the hot water tap 10 and directly supplies hot water to the bathtub 17, so that hot water having the temperature changed to the bath set temperature is transferred from the hot water tap 10 to the bathtub. 17 is started. As a result, high-speed hot water filling that simultaneously performs manual hot water filling operation on the hot water supply side and automatic hot water filling operation on the bath side is started.

When the total integrated value of the flow rate of the hot water flow sensor 8 for detecting the hot water flow rate and the hot water flow sensor 14 for detecting the hot water flow rate reaches a value smaller than the preset hot water amount by a predetermined value (here) Then, when it is detected that the hot water has been filled (S16), the speaker 27 is informed to close the hot water tap 10 and stop the hot water filling operation on the hot water supply side (S17). . After that, when the total amount detected by the flow sensor 8 and the hot water flow sensor 14 becomes equal to the hot water set amount (S18), the control device 22 closes the solenoid valve 15, and the hot water on the bath side is positioned at the hot water set amount position. The tensioning operation is stopped (S19), and the controller 22 restores the hot water supply set temperature (S20) to complete the high speed hot water filling.

In this way, before the hot water filling is completed, the hot water tap 10 that is the hot water supply side hot water is closed, and the hot water filling is performed only by the hot water filling on the bath side. By closing, it is possible to eliminate an increase in the hot water filling amount for the time until the user closes the hot water tap 10 after hot water filling is completed.

In addition, this invention is not limited to 1st and 2nd embodiment, It does not prevent changing in the range which does not change a summary, For example, although this time demonstrated using the heat pump type hot water storage hot-water supply machine, The heater in the hot water storage tank 1 may be used. Further, in the second embodiment, the notification that prompts the user to close the hot water tap 10 is the hot water filling set amount 180L-20L, but the notification is not limited to 180L-20L, and the ratio may be changed as appropriate. And Further, it may be possible to learn the time until the user closes the hot water tap 10 and to control the ratio change as appropriate.

DESCRIPTION OF SYMBOLS 1 Hot water storage tank 2 Water supply pipe 4 Hot water supply pipe 6 Hot water supply mixing valve 7 Hot water supply pipe 8 Hot water supply flow sensor 10 Hot water tap 12 Hot water filling mixing valve 13 Hot water filling pipe 14 Hot water filling flow sensor 17 Bathtub 22 Controller 23 Temperature change means 24 Remote control 26 High speed Hot water switch 27 Speaker

Claims (2)

A hot water storage tank for storing hot water, a hot water discharge pipe for extracting hot water from the upper part of the hot water storage tank, a water supply pipe for supplying water to the hot water storage tank, hot water mixing for mixing hot water from the hot water discharge pipe and water supply from the water supply pipe A hot water pipe through which hot water mixed with the hot water mixing valve flows, a hot water flow sensor for detecting a flow rate of hot water flowing through the hot water pipe, a hot water tap for opening and closing the hot water pipe, and a high temperature from the hot water pipe A bath mixing valve that mixes water and water supplied from the water supply pipe, a hot water pipe that flows hot water mixed by the bath mixing valve, and a hot water flow sensor that detects the flow rate of hot water flowing through the hot water pipe A solenoid valve that opens and closes the hot water filling pipe, further calculates a total integrated value of the hot water flow sensor and the hot water flow sensor, and opens and closes the electromagnetic valve; A remote controller connected to the control device so as to be communicable, a high-speed hot water filling switch for supplying hot water from the hot water supply pipe provided in the remote control and hot water from the hot water filling pipe to the bathtub at the same time, and a user provided in the remote control A hot water storage type water heater provided with a speaker for encouraging a predetermined operation , wherein the control device calculates the hot water from the hot water pipe and hot water from the hot water pipe to the bathtub at the same time. When the total integrated value reaches a value smaller than the hot water set amount by a predetermined value, the speaker notifies that the hot water tap is closed , and the total integrated value calculated by the control device is the hot water setting of the bathtub. The hot water storage type hot water heater is characterized in that when the amount is reached, the control device closes the electromagnetic valve and informs the hot water tap to close via the speaker.   In a high-speed hot water supply where hot water from the hot water supply pipe and hot water from the hot water supply pipe are discharged simultaneously to a bathtub, a hot water supply set temperature that is a mixing target temperature at the hot water mixing valve is a target mixing temperature at the bath mixing valve. 2. The control device according to claim 1, further comprising a temperature changing means for changing an opening degree of the hot water mixing valve so that the hot water set temperature becomes the bath set temperature when different from a certain bath set temperature. The hot water storage water heater described.

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