JP7197390B2 - bath water heater - Google Patents

Description

TECHNICAL FIELD The present invention relates to a bath water heater equipped with a water level sensor.

Conventionally, this kind of hot water filling operation in which hot water mixed at a preset set temperature is filled up to a preset set water level, and the prescribed water level has dropped from the reference water level after the completion of the hot water filling operation. is detected by a water level sensor, and a water supply operation for replenishing water up to a reference water level has been known. (See Patent Document 1).

Also, in this type of water level sensor, a pressure-receiving element in the sensor receives the water head pressure of the water surface of the bathtub, and the water level is detected by the degree of deflection of the element.

JP 2012-127556 A

However, this water level sensor will subtly change its degree of deflection due to the adhesion of limescale due to long-term use. There is a problem that an unreliable water level is stored when the user takes a bath and the water level changes.

In addition, in view of the aging and the fact that people take a bath before obtaining the water level, it is conceivable to take a moving average of the most recent water level data and to obtain the water level before notification of the completion of the hot water filling operation. If the water level acquisition operation is performed immediately, the time from the start of the hot water filling operation to the notification of the hot water filling completion will be long, and the user will feel annoyed.

In order to solve the above problems, the present invention provides a hot water filling operation that supplies hot water up to an arbitrarily predetermined set water level through a water level sensor that detects the water level in the bathtub and a pipe that communicates with the bathtub. A bath hot-water supply apparatus comprising a filling operation control means and a notification starting means for starting a notification from a notification unit to the effect that the hot water filling operation is completed, wherein the control apparatus is provided with the hot water filling operation. A storage means is provided for acquiring and storing water level data of the completion water level when is completed, and when the water level data of the completion water level is not stored in the storage means, the water level data of the completion water level acquired by the water level sensor is stored in the storage means. After the memory is stored in the storage means, the notifying section notifies the completion of the hot water filling operation, and when the water level data of the completed water level is stored in the storage means, the notifying section notifies the completion of the hot water filling operation. Further, the water level data of the completed water level acquired by the water level sensor is stored in the storage means.

In addition, a human sensor for detecting the presence or absence of a person in the bathroom, and entry determination means for determining whether or not a person has entered the room based on the detection result of the human sensor are provided, and the water level sensor detects the water level. When the room entry determination means determines that a person has entered the room while data is being acquired, the water level data of the current completed water level is not stored.

According to the present invention, the order of notifying the completion of the hot water filling operation and storing the water level data at the completion of the hot water filling operation is determined based on the presence or absence of storage of the water level data at the completion of the hot water filling operation in the past, thereby ensuring the reliability of the water level data. Therefore, it is possible to achieve both of securing of performance and shortening of hot water filling time.

In addition, if the entry determining means determines that the user has entered the bathroom while the water level data is being acquired, it cancels the acquisition of the water level data because reliability cannot be ensured due to the possibility of water level changes due to bathing. only reliable water level data can be stored.

BRIEF DESCRIPTION OF THE DRAWINGS Schematic explanatory drawing of 1st Embodiment of this invention Flowchart representing the operation of the water level learning of the hot water filling operation of the present invention

Next, a first embodiment of the present invention will be described with reference to the drawings.
1 is a hot water storage tank for storing hot water, 2 is a heat pump unit as heating means for heating hot water, and 3 is a bathtub.

A heating circulation circuit 4 connects the hot water storage tank 1 and the heat pump unit 2 so as to circulate. The cold water in the lower part of the hot water storage tank 1 is heated by the heat pump unit 2 through the heat pump supply pipe, and the heated high temperature hot water is returned to the upper part of the hot water storage tank 1 by the heat pump return pipe to return the hot water to the hot water storage tank 1. is heated and stored. A stored hot water temperature sensor 6 is provided on the outer peripheral surface of the hot water storage tank 1, and the amount of stored hot water is detected when the stored hot water temperature sensor 6 detects a predetermined temperature or higher.

7 is a water supply pipe that supplies water to the hot water storage tank 1, 8 is a hot water discharge pipe that discharges hot water in the hot water storage tank 1, 9 is a water supply bypass pipe that branches from the water supply pipe 7 and bypasses the hot water storage tank 1, and 10 is a water supply bypass. A hot water supply mixing valve for mixing cold water from the pipe 9 and hot water from the hot water supply pipe 8 to a set temperature, 11 is a hot water supply pipe for supplying the mixed hot water at the set temperature, and 12 is provided at the end of the hot water supply pipe 11. It is a hot water tap that can be used. A hot water temperature sensor 13 is provided downstream of the hot water mixing valve 10, and a hot water supply flow rate sensor 14 counts the amount of hot water supplied. Reference numeral 15 denotes a pressure reducing valve for reducing the tap water pressure to a predetermined pressure, and 16 denotes a pressure relief valve for releasing excessive pressure due to heating.

A bath circulation circuit 17 connects a bath heat exchanger 18 for exchanging heat between the hot water in the hot water storage tank 1 and the circulating hot water in the bath, and the bathtub 3. The bath heat exchanger 18 is connected to the bath return pipe 17b directed to the bathtub 3 so as to be circulatory. A circulation port 19 connects the bathtub 3 and the bath circulation circuit 17 .

Reference numeral 20 denotes a bath circulation pump provided in the bath circulation circuit 17; 21, a water flow sensor for detecting the presence or absence of running water; 22, a bath temperature sensor for detecting the temperature of the bath flowing through the bath circulation circuit 16; It is a water level sensor that detects the water level in the bath 3, and is provided on the upstream side of the bath circulation pump 20 in the bath circulation circuit 17. Since the water level sensor 23 detects the water level in the bathtub 3 from the water pressure of the hot water, the water level cannot be detected if the circulation port 19 is exposed. Water level must be high. Also, here, it takes about one minute to stabilize the bath water and detect the water level.

24 is a hot water filling pipe branched from the middle of the hot water supply pipe 11 and connected to the bath circulation circuit 17 for filling the bathtub 3 with hot water; A hot water filling valve 26 for stopping is a bath flow rate sensor for counting the amount of hot water filled into the bathtub 3 .

Reference numeral 27 denotes a heating control section for controlling heating of the heat pump unit 2; 28, a control device for controlling hot water supply and bathing; , the water level sensor 23 and the bath flow rate sensor 26 are inputted, and the heating circulation pump 5, the hot water mixing valve 10, the bath circulation pump 20 and the hot water filling valve 26 are driven.

Numeral 29 is a bathroom remote controller which can communicate with the control device 28 and is provided in the bathroom. An operation unit 30 for setting the set water level, which is the target water level for starting the hot water filling operation and for the hot water filling operation, and for displaying the setting contents. A display unit 31, a notification unit 32 for notifying that the hot water filling operation has been completed, and a human sensor 33 for detecting the presence or absence of a person in the bathroom are provided. Reference numeral 34 denotes an external bathroom remote controller provided outside the bathroom.

The human sensor 33 is a pyroelectric sensor that detects the amount of temperature change in the heat source within the detection area, and detects the presence of a person in the bathroom. Specifically, the human detection sensor 33 detects whether or not a person is present in the bathroom by detecting a temperature change in the detection area when the person moves or moves their limbs. Based on the detection result of the human sensor 33, the room entry determination means 35 provided in the control device 28 determines whether to enter the bathroom or to leave the bathroom.

The control device 28 also includes hot water filling operation control means 36 for controlling the operation during the hot water filling operation, and notification start means 37 for starting notification from the notification unit 32 of the external remote controller 34 that the hot water filling operation has been completed. and storage means 38 for storing a plurality of water level data of the completed water level at the completion of hot water filling operation.

This water level data is stored for a plurality of times (here, the most recent five times), and based on the moving average of the plurality of times, the hot water filling operation completion water level is set.

Next, the boiling operation will be explained.
When there is a request for boiling, the control device 28 drives the heating circulation pump 5 in the middle of the pipe connecting the hot water storage tank 1 and the heat pump unit 2 to pump up water from the lower part of the hot water storage tank 1 and heat it with the heat pump unit 2. The water in the hot water storage tank 1 is gradually boiled up to high temperature water by continuing the operation of returning the hot water to the upper part of the hot water storage tank 1.例文帳に追加

Next, hot water supply operation will be described.
When the hot water supply valve 12 is opened, water is supplied from the water supply pipe 7, flows into the lower part of the hot water storage tank 1, passes through the water supply bypass pipe 9, and is pushed out from the upper part of the hot water storage tank 1. The hot water mixed in 10 and adjusted so that the hot water supply set temperature and the temperature detected by the hot water supply thermistor 13 are the same are supplied from the hot water supply tap 12 .

In addition, the operation of various devices for the hot water filling operation will be explained.
When the hot water filling switch of the operation portion 30 of the bathroom remote controller 29 and the bathroom outside remote controller 34 is pressed, the control device 28 opens the hot water filling valve 25 to supply water from the water supply pipe 7 and flow into the lower part of the hot water storage tank 1 . The hot water mixing valve 10 mixes the high-temperature water pushed out from the upper part of the hot water storage tank 1 through the water supply bypass pipe 9 and the water supply of the water supply bypass pipe 9, so that the bath set temperature and the temperature detected by the bath temperature sensor 22 become the same. Filling of the hot water is started by flowing into the bathtub 3 the hot water adjusted so as to become the hot water. Then, the bath flow rate sensor 26 detects the flow rate, and when the total integrated value of the flow rate reaches the set amount of hot water filling, the control device 28 closes the hot water filling valve 25 to complete the hot water filling operation. Then, it shifts to automatic keep-warm operation that automatically keeps the bath temperature warm.

Next, the water level learning for hot water filling operation according to the present invention will be described in detail with reference to the flow chart of FIG.
First, when the hot water filling switch of the operation unit 30 of the bathroom remote controller 29 and the bathroom outside remote controller 34 is operated (Yes in S1), the controller 28 opens the hot water filling valve 25 to start the hot water filling operation ( S2), hot water is filled at a temperature adjusted so that the set temperature of the bath and the temperature detected by the bath temperature sensor 22 are the same (S3).

Then, when the bath flow rate sensor 26 detects the flow rate and the total integrated value of the flow rate flows by the hot water filling set amount (Yes in S4), the control device 28 closes the hot water filling valve 25. (Yes in S5).

Next, the control device 28 confirms whether the water level data at the time when the past hot water filling operation was completed is stored in the storage means 38 (S6). The notification unit 32 notifies that the tension operation is completed (S7).

Thereafter, acquisition of water level data at the completion of the hot water filling operation is started (S8).

During acquisition of the water level data, the entry determination means 35 determines whether or not a person has entered the bathroom and whether there is a person in the bathroom (S9), and the entry determination means 35 determines that a person has entered the bathroom. If so (S9 is No), the current acquisition of water level data is canceled (S10), and automatic heat retention operation is started (S11).

If the entry determination means 35 does not determine that a person has entered the bathroom (Yes in S9) and the acquisition of water level data is completed (Yes in S12), the acquired water level data is stored (S13). , the automatic heat retention operation is started (S11).

In this way, when the water level data at the completion of the hot water filling operation in the past is stored in the storage means 38, priority is given to the time until the hot water filling operation is completed, and the water level is first notified of the completion of the hot water filling operation. Since the data is acquired, the time until the hot water filling operation is completed can be shortened, and the user's stress caused by the long hot water filling operation time can be reduced.

In addition, the user does not always enter the bathroom immediately after the notification of the completion of the hot water filling operation. On the other hand, even if the user enters the room immediately after the notification of the completion of the hot water filling operation, the entry determination means 35 determines that the user has entered the bathroom during the acquisition of the water level data. Then, since acquisition of unreliable water level data is canceled, only reliable water level data can be acquired.

Then, the control device 28 confirms whether or not the water level data at the completion of the hot water filling operation in the past is stored in the storage means 38 (S6). Acquisition is started (S14). Here, it takes about one minute to stabilize the bath water and detect the water level.

During the acquisition of the water level data, the entry determination means 35 determines whether a person has entered the bathroom and whether there is a person in the bathroom (S15), and the entry determination means 35 determines that a person has entered the bathroom. If yes (No in S15), the current acquisition of water level data is canceled (S16), the notifying unit 32 notifies completion of hot water filling operation (S17), and automatic heat retention operation is started (S11).

During acquisition of the water level data, the entry determination means 35 determines whether a person has entered the bathroom and whether there is a person in the bathroom (S15), and the entry determination means 35 determines that a person has entered the bathroom. If not (Yes in S15) and the acquisition of water level data is completed (Yes in S18), the acquired water level data is stored (S19), and the notification unit 32 notifies completion of hot water filling operation (S17), The automatic keep warm operation is started (S11).

In this way, when the water level data at the time of completion of the past hot water filling operation is not stored in the storage means 38, priority is given to the acquisition of the water level data at the time of completion of the hot water filling operation, and the hot water filling operation is completed until the water level data is acquired. is not reported, the user is made to think that the hot water filling operation is not yet completed while the water level data is being acquired, and reliable water level data can be acquired before the user enters the bathroom.

In addition, since it takes about one minute to acquire the water level data, if the room entry determination means 35 determines that the user has entered the bathroom during that time, the reliability cannot be ensured due to the possibility of the water level changing due to bathing. is canceled, it is possible to store reliable water level data.

Therefore, by determining the order of notifying the completion of the hot water filling operation and storing the water level data at the time of the completion of the hot water filling operation, depending on whether or not the water level data at the time of completion of the hot water filling operation in the past is stored, the reliability of the water level data can be secured and the hot water level data can be stored. It is possible to achieve both shortening of the tensioning time.

It should be noted that the present invention is not limited to this embodiment, and it does not prevent modification within the scope of the invention. A water heater that heats hot water with a heat source such as a heater or a burner may be used.

1 Hot water storage tank 3 Bathtub 23 Water level sensor 28 Control device 29 In-bathroom remote controller 32 Notification unit 33 Human sensor 34 Outside bathroom remote controller 35 Room entry determination means 36 Hot-water filling operation control means 37 Notification start means 38 Storage means

Claims (2)

a water level sensor that detects the water level in the bathtub ;
Hot water filling operation control means for performing hot water filling operation to supply hot water up to a set water level arbitrarily determined in advance through a pipe communicating with the bathtub, and a notification unit that starts notification to the effect that the hot water filling operation is completed. A bath water heater comprising a control device provided with notification starting means for
The control device is provided with storage means for acquiring and storing water level data of the completion water level when the hot water filling operation is completed,
When the water level data of the completion water level is not stored in the storage means, after the water level data of the completion water level acquired by the water level sensor is stored in the storage means, the notification unit notifies completion of hot water filling operation. west,
When the water level data of the completion water level is stored in the storage means, the water level data of the completion water level acquired by the water level sensor is stored in the storage means after the completion of hot water filling operation is reported by the reporting unit. A bath hot water supply device characterized by: A human sensor for detecting the presence or absence of a person in the bathroom, and entry determination means for determining whether or not a person has entered the room based on the detection result of the human sensor,
4. The water level data of the completed water level of this time is not stored when the room entry determination means determines that a person has entered the room while the water level sensor is acquiring the water level data. 1. The bath water heater according to 1.

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