JP2016205689A - Hot water supply device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve a problem that a user cannot confirm a display of a present use flow rate on a remote controller and the user cannot hear voice due to noise by a shower even when the voice is output, when the user washes tableware or takes a shower.SOLUTION: A flow rate regulation valve 12 is disposed at a downstream side with respect to a hot water supply mixture valve 7, and further a control device 20 is provided with flow rate changing means 21 for changing a hot water supply flow rate by controlling a valve opening of the flow rate regulation valve 12. When a counted value of the continuous hot water supply flow rate detected by a hot water supply flow rate sensor 11 during a hot water supply operation, is over a prescribed amount, the flow rate changing means 21 changes the valve opening of the flow rate regulation valve 12 so that at least the user can know change of the flow rate.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a hot water storage type hot water supply apparatus.

  Conventionally, in this type of water heater, as a monitoring system in a water heater, the actual amount of hot water supplied by the water heater is compared with a preset reference hot water amount, and when the actual hot water amount exceeds the reference hot water amount, What is known is to change the display mode of the hot water information displayed on the remote control of the to notify the user that hot water is being used excessively and to instill energy consciousness into the user (for example, Patent Document 1).

JP 2006-258338 A

  However, in the case of Patent Document 1, when the user is washing dishes or taking a shower, it is not possible to confirm what the current hot water supply information is displayed on the remote control, and the sound is output. However, there was a problem that it was not transmitted to the user by the sound of the shower.

In order to solve the above problems, the present invention provides a hot water supply pipe for supplying hot water to a hot water storage tank, a hot water discharge pipe for extracting hot water from the upper part of the hot water storage tank, hot water from the hot water supply pipe, and hot water supply for mixing the hot water supply from the water supply pipe A mixing valve, a hot water pipe through which hot water mixed by the hot water mixing valve flows, a hot water flow rate 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 hot water mixing valve In a hot water storage type hot water heater comprising a control device for controlling the opening degree and supplying the required temperature from the hot water tap, a flow rate adjusting valve is provided downstream of the hot water mixing valve, and the control device Is provided with flow rate fluctuation means for controlling the valve opening degree of the flow rate adjusting valve to vary the hot water supply flow rate, and when the count of the continuous hot water flow rate detected by the hot water flow rate sensor during the hot water supply operation exceeds a predetermined amount, Flow rate fluctuation hand It is varied such that a change in the flow rate to at least a user of the valve opening of the flow control valve is seen.

A hot water supply pipe for supplying hot water to the hot water storage tank; a hot water discharge pipe for extracting hot water from the upper part of the hot water storage tank; a hot water supply mixing valve for mixing high-temperature water from the hot water supply pipe and water supply from the water supply pipe; A hot water pipe through which hot water mixed in the hot water flows, a hot water flow rate sensor for detecting a flow rate of hot water flowing through the hot water pipe, a hot water tap that opens and closes the hot water pipe, and an opening degree of the hot water mixing valve, In the hot water storage type hot water heater provided with a controller for supplying hot water from the hot water tap, a flow rate adjusting valve is provided downstream of the hot water mixing valve, and the control device further includes a valve of the flow rate adjusting valve. Flow rate varying means for controlling the opening degree to vary the hot water supply flow rate, and continuous hot water supply time detecting means for detecting continuous hot water supply time, which is the time during which the flow rate is continuously detected by the hot water supply flow rate sensor during hot water supply operation, During operation When the continuous hot water supply time counted detected by the hot water supply time detecting means exceeds a predetermined time, the flow rate variation means vary as a change in flow rate in at least the user of the valve opening of the flow control valve is seen.

  As described above, according to the present invention, when the continuous hot water supply flow rate exceeds a predetermined value, or when the continuous hot water supply time exceeds a predetermined time, the flow rate varying means sets at least the valve opening degree of the flow rate adjustment valve to the user. By changing the flow rate so that you can see the change in flow rate, you can easily notice excessive hot water even during showering and washing, where you can not hear the sound of the speaker, and how much hot water the user is using Understand and save money.

Schematic explanatory diagram of one embodiment of the present invention Graph of an example of flow rate variation of one embodiment of the present invention Flowchart of operation by detection at continuous hot water supply flow rate in the first embodiment. Flowchart of operation by detection in continuous hot water supply time in the second embodiment

1st Embodiment of the hot-water supply apparatus of this invention is described based on FIG.
1 is a hot water storage tank for storing hot water, 2 is a water supply pipe connected to the lower part of the hot water storage tank 1, 3 is a hot water supply pipe connected to the upper part of the hot water storage tank 1, and 4 is a heat pump type for heating the hot water in the hot water storage tank 1. The heating means 5 is a heat pump circulation circuit that connects the lower part of the hot water storage tank 1, the heat pump type heating means 4, and the upper part of the hot water storage tank 1 so that hot water in the hot water storage tank 1 can circulate. Although not shown, hot water in the hot water storage tank 1 and the heat pump heating means 4 is circulated by a heat pump circulation pump provided in the middle of the heat pump circulation circuit 5.

  6 is a water supply bypass pipe that branches in the middle of the water supply pipe 2, and 7 is a hot water supply that mixes hot water flowing through the tap water pipe 3 with city water flowing through the water supply bypass pipe 6 at an appropriate ratio to adjust the hot water supply set temperature or bath set temperature. A mixing valve, 8 is a hot water supply pipe through which hot water mixed by the hot water supply mixing valve 7 flows, 9 is a hot water tap for supplying hot water from the hot water supply pipe 8, and 10 is a temperature of hot water mixed by the hot water mixing valve 7. A hot water supply temperature sensor 11 detects a hot water supply flow rate provided in the middle of the hot water supply pipe 8 and also detects a continuous hot water supply flow rate of a flow rate of hot water supply, and 12 is hot water mixed by the hot water mixing valve 7. This is a flow rate adjustment valve that adjusts the hot water supply flow rate.

  13 is a bath heat exchanger for exchanging heat with hot water in the upper part of the hot water storage tank 1, 14 is a bathtub, 15 is a bath circulation circuit for connecting the bath heat exchanger 13 and the bathtub 14 so that hot water can circulate, and 16 is a bath circulation circuit. 15 is a bath circulation pump provided in the middle of 15.

  Reference numeral 17 denotes a remote controller having an operation unit that can be set by the user to perform various settings. Reference numeral 18 denotes setting information such as at least a hot water supply set temperature and time, and since hot water supply has been started this time to save the user. A display unit 19 for displaying a continuous hot water supply flow rate or hot water supply time and a sign for notifying that hot water has been discharged, and a speaker 19 for notifying information on the display unit 18 by voice. For example, there is a voice saying that bathing has been completed, “The bath has boiled.” In addition, to encourage the user to save money, it notifies the user of the continuous hot water flow rate since the start of hot water supply. As voice, there is “current hot water flow rate of hot water with continuous hot water supply is XXL. Let's stop hot water frequently”.

Reference numeral 20 denotes a control device that performs various controls of a hot water storage type hot water heater constituted by a microcomputer, and 21 denotes a flow rate adjustment based on the continuous hot water supply flow rate detected by the hot water supply flow rate sensor 11 provided in the control device 20. This is a flow rate variation means for varying the valve opening degree of the valve 12.

Next, the hot water supply operation will be described.
When the hot-water tap 9 is opened, city water flows into the bottom of the hot water storage tank 1 from the water supply pipe 2 and hot water is discharged from the top of the hot water storage tank 1 through the hot water discharge pipe 3. It is mixed with water from the pipe 6 and passes through the hot water supply pipe 8. And the control apparatus 20 controls the valve opening degree of the hot-water supply mixing valve 7 so that the temperature detected by the hot-water supply temperature sensor 10 coincides with the hot-water supply set temperature, and performs hot-water supply at the hot-water supply set temperature. When the hot water tap 9 is closed, the control device 20 stops the hot water supply by stopping the control of the valve opening degree of the hot water mixing valve 7.

Next, an example of the flow rate variation of the flow rate variation means 21 will be described with reference to FIG.
The vertical axis of the graph in FIG. 2 represents the hot water flow rate, and the horizontal axis of the graph represents the passage of time. Every time the count of the continuous hot water flow rate detected by the hot water flow rate sensor 11 for detecting the hot water flow rate at which hot water is continuously supplied from the hot water storage tank 1 to the hot water tap 9 exceeds a predetermined value (10 L in this case), the flow rate fluctuation means 21 Control is performed to reduce the valve opening degree of the flow rate adjustment valve 12, and the user is informed so as to be aware of excessive hot water being dispensed. Then, after performing the throttle control, the count of the continuous hot water supply flow rate is reset and the count is restarted. Further, the throttle control of the flow rate adjustment valve 12 is not restricted at least until the hot water supply is stopped, the number of times of restriction is about several times (here, twice), and the time of restriction is instantaneous, which is at least uncomfortable for the user. It gives a fluctuation to the extent that it feels as a notification from the remote controller 17.

Next, a first embodiment of the present invention will be described based on the flowchart of FIG.
When the hot-water tap 9 is opened, hot water in the hot water discharge pipe 3 and water from the water supply bypass pipe 6 are mixed by the hot water supply mixing valve 7, and the temperature detected by the hot water supply temperature sensor 10 matches the hot water supply set temperature. Hot water supply is started with the flow rate adjustment valve 12 fully opened. When the hot water supply temperature sensor 11 that counts the continuous hot water supply flow rate after the start of hot water supply checks whether the continuous hot water supply flow rate count exceeds 10L (S1), and when the continuous hot water supply flow rate count exceeds 10L ( S1 is YES), the flow rate changing means 21 controls the valve opening degree of the flow rate adjusting valve 12 to change the hot water flow rate twice (S2), and notifies the speaker 19 (S3). Even when the person cannot hear the sound from the speaker 19 during the shower or washing the dishes, the user can feel the fluctuation of the hot water supply flow rate and notice that the hot water has been discharged too much.

  After the flow rate changing means 21 changes the hot water supply flow rate of the flow rate adjusting valve 12 twice, the flow rate changing means 21 returns the valve opening degree of the flow rate adjusting valve 12 to the fully open state (S4), and the continuous hot water supply flow rate is counted. Is reset (S5), and the count is restarted (S6).

  Thus, every time the count of the continuous hot water supply flow rate exceeds a predetermined value, the user can change how much hot water the user can change by changing the valve opening degree of the flow rate adjustment valve 12 so that at least the change in flow rate can be understood by the user. The user can easily detect excessive hot water even during showers and washings where the user can not hear the sound of the speaker 19, and the user knows how much hot water is used and encourages savings. Can do. Further, since the present embodiment counts with the continuous hot water supply flow rate, even when hot water supply with a large flow rate is performed in a short time, it can be noticed that too much hot water has been discharged.

  Next, Embodiment 2 in which detection items are changed will be described. Here, the same components as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.

  In the second embodiment, the control device 20 is provided with continuous hot water supply time detecting means 22 for detecting a continuous hot water supply time that is a time during which a flow rate of a predetermined amount or more is continuously detected by the hot water supply flow rate sensor 11 during the hot water supply operation. Yes.

Reference numeral 21 denotes a flow rate changing means provided in the control device 20 for changing the valve opening degree of the flow rate adjusting valve 12 based on the continuous hot water supply time detected by the continuous hot water supply time detecting means 22.

Next, a second embodiment of the present invention will be described based on the flowchart of FIG.
When the hot-water tap 9 is opened, hot water in the hot water discharge pipe 3 and water from the water supply bypass pipe 6 are mixed by the hot water supply mixing valve 7, and the temperature detected by the hot water supply temperature sensor 10 matches the hot water supply set temperature. Hot water supply is started with the flow rate adjustment valve 12 fully opened. It is confirmed whether or not the count of the continuous hot water supply time detecting means 22 that counts the continuous hot water supply time, which is the time during which the flow rate is continuously detected by the hot water supply flow rate sensor 11, during the hot water supply operation has exceeded a predetermined time (here, 10 minutes) (S7). ), When the count of the continuous hot water supply time exceeds 10 minutes (YES in S7), the flow rate changing means 21 controls the valve opening of the flow rate adjusting valve 12 to change the hot water supply flow rate twice ( S8) By notifying the speaker 19 (S9), even if the user cannot hear the sound from the speaker 19 while showering or washing the dishes, the user feels the fluctuation of the hot water flow rate, and the hot water is discharged too much. You can notice too much hot water.

  After the flow rate changing means 21 changes the hot water supply flow rate of the flow rate adjusting valve 12 twice, the flow rate changing means 21 returns the valve opening degree of the flow rate adjusting valve 12 to the fully open state (S10), and the continuous hot water supply time is counted. Is reset (S11), and the count is restarted (S12).

  Thus, whenever the count of the continuous hot water supply time exceeds a predetermined time, the user can change how much hot water the user can change by changing the valve opening degree of the flow rate adjusting valve 12 so that at least the user can see the change in the flow rate. The user can easily detect excessive hot water even during showers and washings where the user can not hear the sound of the speaker 19, and the user knows how much hot water is used and encourages savings. Can do. Furthermore, since the present embodiment counts with the continuous hot water supply time, even when hot water is supplied at a small flow rate for a long time, it can be noticed that too much hot water has been discharged.

In addition, this invention is not limited to embodiment, It does not prevent changing in the range which does not change a summary, For example, the flow volume variation means 21 of the count which fluctuates the valve opening degree of the flow regulating valve 12 is used. The predetermined value is set to 10 L or the predetermined time is set to 10 minutes, and every time the count is exceeded, the flow rate variation means 21 changes the valve opening degree of the flow rate adjusting valve 12 twice. The number of times may be arbitrarily set as long as the user can see the change in the flow rate.

  Further, in the first embodiment, the hot water discharge is detected by separate counting means by counting at the continuous hot water supply flow rate, and in the second embodiment by counting at the continuous hot water supply flow rate. The two conditions of the flow rate and the continuous hot water supply time may be detected in combination.

DESCRIPTION OF SYMBOLS 1 Hot water storage tank 2 Water supply pipe 3 Hot water discharge pipe 6 Water supply bypass pipe 7 Hot water supply mixing valve 8 Hot water supply pipe 9 Hot water tap 11 Hot water supply flow rate sensor 12 Flow rate adjustment valve 20 Controller 21 Flow rate fluctuation means 22 Continuous hot water supply time detection means

Claims (2)

Mixing with a hot water supply pipe for supplying hot water to the hot water storage tank, a hot water discharge pipe for taking out hot water from the upper part of the hot water storage tank, a hot water supply mixing valve for mixing hot water from the hot water discharge pipe and water supply from the water supply pipe, and the hot water supply mixing valve A hot water pipe through which the hot water flows, a hot water flow sensor for detecting a flow rate of hot water through the hot water pipe, a hot water tap for opening and closing the hot water pipe, and an opening degree of the hot water mixing valve, In a hot water storage type hot water heater provided with a controller for supplying hot water from the hot water tap, a flow rate adjusting valve is provided downstream of the hot water mixing valve, and the control device further includes a valve opening degree of the flow rate adjusting valve. The flow rate variation means for varying the hot water flow rate by controlling the hot water flow rate, and when the continuous hot water flow rate count detected by the hot water flow rate sensor exceeds a predetermined amount during the hot water supply operation, Reduce valve opening Both hot-water storage type water heater that is characterized by varying as a change in flow rate can be seen to the user. Mixing with a hot water supply pipe for supplying hot water to the hot water storage tank, a hot water discharge pipe for taking out hot water from the upper part of the hot water storage tank, a hot water supply mixing valve for mixing hot water from the hot water discharge pipe and water supply from the water supply pipe, and the hot water supply mixing valve A hot water pipe through which the hot water flows, a hot water flow sensor for detecting a flow rate of hot water through the hot water pipe, a hot water tap for opening and closing the hot water pipe, and an opening degree of the hot water mixing valve, In a hot water storage type hot water heater provided with a controller for supplying hot water from the hot water tap, a flow rate adjusting valve is provided downstream of the hot water mixing valve, and the control device further includes a valve opening degree of the flow rate adjusting valve. And a continuous hot water supply time detecting means for detecting a continuous hot water supply time that is a time during which the flow rate is continuously detected by the hot water supply flow rate sensor during the hot water supply operation. The continuous hot water supply When the count of the continuous hot water supply time detected by the interval detecting means exceeds a predetermined time, the flow rate changing means changes the valve opening degree of the flow rate adjusting valve so that at least the user can see the change in the flow rate. Hot water storage type water heater.

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