JP2021076346A - Hot water supply device - Google Patents

Abstract

To provide a hot water supply device improved in accuracy in detection of the entry of a person into a bathroom.SOLUTION: A hot water supply device includes: a human body detecting means 9 installed in a bathroom 11; a kitchen remote controller 13; a bathtub water heating means 4; and a control means 10. The hot water supply device has a function of notifying the kitchen remote controller 13 of the fact that the human body detecting means 9 detects the presence of a person in the bathroom 11 when detecting the presence of the person. When there is no water in the bathtub 3, even when the human body detecting means 9 detects the entry of the person in the bathroom 11, a notification part 14 of the kitchen remote controller 13 is not notified of the fact within a first prescribed period of time. As a result, the hot water supply device is improved in accuracy in detection of the entry of the person 12 into the bathroom 11.SELECTED DRAWING: Figure 4

Description

The present invention relates to a hot water supply device having a function of detecting the entry of a person into a bathroom.

Conventionally, in this type of hot water supply device, an infrared sensor is provided in the bathroom remote controller as a human body detecting means for detecting the presence or absence of a resident in the bathroom, and this infrared sensor detects the presence or absence of a resident in the bathroom. Is common.

Japanese Patent No. 4458197

However, in the configuration of the conventional hot water supply device, when the bathroom door is open, there is a problem that the human body detecting means reacts only when a person crosses in front of the human body detecting means.

In addition, there is a problem that the human body detecting means reacts only by entering the bathroom for a short time in order to plug the bathtub.

The present invention solves the above-mentioned conventional problems, and an object of the present invention is to provide a hot water supply device having improved detection accuracy of a person entering a bathroom.

In order to solve the above-mentioned conventional problems, the hot water supply device of the present invention includes a human body detecting means installed in a bathroom, a kitchen remote control, a bathtub water heating means, and a control means, and the human body detecting means is provided. When the presence of a person in the bathroom is detected, the kitchen remote controller is notified to that effect, and when there is no hot water in the bathtub, the human body detecting means enters the bathroom. Even if the above is detected, the kitchen remote control is not notified to that effect within the first predetermined time.

As a result, the door of the bathroom is open, and the human body detection means reacts just by crossing in front of the human body detection means, and in order to go to plug the bathtub, it is inside the bathroom. Prevents the human body detection means from reacting after entering the room for a short time, that is, preventing the human body detection means from reacting and notifying the kitchen remote controller even when entering the bathroom for a short time. It is possible to provide a hot water supply device with improved detection accuracy of people entering the bathroom.

According to the present invention, it is possible to provide a hot water supply device having improved detection accuracy of a person entering the bathroom.

Configuration diagram of the hot water supply device according to the first embodiment of the present invention (A) Front view of the bathroom remote controller according to the first embodiment of the present invention (b) Front view of the kitchen remote controller (A) Cross-sectional view of the bathroom according to the first embodiment of the present invention (b) Cross-sectional view taken along the line AA of FIG. 3 (a). The figure which shows the control specification of the bathroom use display function of the hot water supply device in Embodiment 1 of this invention.

The first invention includes a human body detecting means installed in a bathroom, a kitchen remote control, a bathtub water heating means, and a control means, and the human body detecting means detects the presence of a person in the bathroom. In this case, it has a function to notify the kitchen remote controller to that effect, and when there is no hot water in the bathtub, even if the human body detecting means detects the entry of a person into the bathroom, it is within the first predetermined time. Is a hot water supply device characterized in that it does not notify the kitchen remote controller to that effect.

As a result, the door of the bathroom is open, and the human body detection means reacts just by crossing in front of the human body detection means, and in order to go to plug the bathtub, it is inside the bathroom. Prevents the human body detection means from reacting after entering the room for a short time, that is, preventing the human body detection means from reacting and notifying the kitchen remote controller even when entering the bathroom for a short time. It is possible to provide a hot water supply device with improved detection accuracy of people entering the bathroom.

A second invention, particularly in the first invention, is that the bathtub water heating means has a bath heat retention operation function for keeping hot water in the bathtub warm, and the human body detecting means is being executed during the bath heat retention operation function. However, when a person's entry into the bathroom is detected, the kitchen remote control is notified to that effect within a second predetermined time shorter than the first predetermined time.

As a result, when entering a bathroom for the purpose of bathing, the notification unit of the kitchen remote controller can be appropriately notified to that effect, so that it is possible to provide a hot water supply device with improved detection accuracy of the entry of a person into the bathroom. ..

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition. The present invention is not limited to this embodiment.

(Embodiment 1)
FIG. 1 is a diagram showing a configuration of a hot water supply device according to the first embodiment of the present invention.

In FIG. 1, the hot water storage tank 1, the heat pump 2 as a hot water storage tank water heating means for heating the water in the hot water storage tank 1, and the hot water in the hot water storage tank 1 and the hot water in the bathtub 3 are exchanged for heat to reheat the bath. A heat exchanger 4 as a bath water heating means, a first circulation pump 5, a second circulation pump 6, a thermista 7 for measuring the bath water temperature, and a bathroom remote control 8 are provided in a room in the bathroom. A kitchen remote control provided with a human body detecting means 9 for detecting the presence or absence of a person and a notification unit 14 for notifying the presence of a person in the bathroom 11 when the presence of a person is detected in the bathroom 11 by the output from the human body detecting means 9. 13 and.

For example, an infrared sensor is used in the human body detecting means 9.

Then, when the human body detecting means 9 detects the presence of a person in the bathroom 11, the human body detecting means 9 receives an output from the human body detecting means 9 and outputs the output to the kitchen remote control 13 to notify the notification unit of the kitchen remote control 13. A control means 10 for executing a bath heat retaining operation function for controlling the operation of the first circulation pump 5 and the second circulation pump 6 to keep the hot water in the bathtub warm, and the bathroom use display function for notifying the 14th. I have.

FIG. 2A shows a front view of the bathroom remote controller 8, and FIG. 2B shows a front view of the kitchen remote controller 13.

As shown in FIG. 2A, a human body detecting means 9 which is an infrared sensor is provided on the front surface of the bathroom remote controller 8.

Further, as shown in FIG. 2B, when the human body detecting means 9 detects the presence of a person in the bathroom 11, the kitchen remote controller 13 indicates that the person is present in the bathroom 11. A notification unit 14 is provided that displays and notifies the kitchen remote controller 13 with pictograms or the like indicating a human being.

FIG. 3 is a view showing the viewing angle of the human body detecting means 9 provided in the bathroom remote controller 8 installed in the bathroom 11.

FIG. 3A is a cross-sectional view of the bathroom 11, FIG. 3B is a sectional view taken along the line AA of FIG. 3A, and the bathroom remote controller 8 is installed on a wall surface slightly above the bathtub 3. The viewing angle of the human body detecting means 9 is the same in the left-right direction.

Here, the plane direction cannot be specified as the mounting position of the bathroom remote controller 8, but the height direction is almost constant so that the bathroom remote controller 8 can be operated from inside the bathtub 3 or while sitting in the washing place.

Therefore, the viewing angle of the human body detecting means 9 must be the same in the left-right direction, while the mounting position in the height direction is low and almost constant, so that the viewing angle in the downward direction may be small (∠). α> ∠β).

Therefore, even if the viewing angle in the upward direction is relatively large, the viewing angle as a whole can be reduced, and the sensitivity can be increased accordingly.

Further, if the viewing angle on the lower side is large, when the bathtub 3 is not covered, depending on the installation position of the bathroom remote controller 8, the surface of the hot water stretched on the bathtub 3 is captured in the field of view, and the shaking is detected. Sometimes. This false positive can be prevented by keeping the downward viewing angle small. 12 is a person.

The operation and operation of the hot water supply device configured as described above will be described below.

As a basic function, hot water heated by the heat pump 2 is stored in the hot water storage tank 1, and this hot water is used for hot water supply and heating of bathtub water.

To heat the bathtub water, the hot water stored in the hot water storage tank 1 is supplied to the primary side flow path of the heat exchanger 4 by using the first circulation pump 5, and is supplied by the second circulation pump 6. , The bath water is circulated in the secondary side flow path of the heat exchanger 4.

When the presence of a person in the bathroom 11 is detected based on the output of the human body detecting means 9, the bathroom use display function for notifying the kitchen remote controller to that effect will be described with reference to FIG.

First, the bath heat retention operation function for keeping the hot water in the bathtub 3 warm will be described. When the user turns on the bath automatic switch shown in FIG. 2 (a), the control means 10 activates the second circulation pump 6. The temperature of the water in the bathtub 3 is detected by the thermista 7, and if this is less than the set value, the first circulation pump 5 is started to fill the primary side flow path of the heat exchanger 4 with the hot water of the hot water storage tank 1. Circulate and heat the bath water.

Then, when the temperature of the bathtub water reaches the set temperature, the first circulation pump 5 and the second circulation pump 6 are stopped, and the heating operation of the bathtub water is completed.

That is, the control means 10 activates the second circulation pump 6, detects the water temperature in the bathtub 3 by the thermista 7 at predetermined time intervals, and when the water temperature is less than the set value, the first circulation pump 5 is operated. The bath heat retention operation function repeats the operation of starting, circulating the hot water of the hot water storage tank 1 through the primary side flow path of the heat exchanger 4 and heating the bath water to a set temperature.

Here, as shown in FIG. 4, the control means 10 detects by a water level sensor (not shown), and when there is no hot water in the bathtub 3 (for example, the bathtub 3 is not plugged), the bathroom is used. Within the first predetermined time T1 (for example, 15 seconds) after the display function is started, even if the human body detecting means 9 detects the entry of a person into the bathroom 11, the notification unit of the kitchen remote control 13 notifies that fact. A certain time zone is provided so as not to notify 14.

However, when the bath heat retention operation function is being executed, the control means 10 has a second predetermined time (for example,) shorter than the first predetermined time after the human body detecting means 9 detects the entry of a person into the bathroom 11. Within 0 to 2 seconds), the notification unit 14 of the kitchen remote controller 13 is notified to that effect.

Further, when the water level sensor (not shown) detects and there is no hot water in the bathtub 3 (the bathtub 3 is not plugged, etc.), the bathroom use display function is started for the first predetermined time T1 (for example,). , 15 seconds) In T2, which is the time zone after the elapse, the human body detecting means 9 detects the entry of a person into the bathroom 11, and then the second predetermined time (for example, 0 to 2) shorter than the first predetermined time. Within seconds), the notification unit 14 of the kitchen remote control 13 is notified to that effect.

The start and stop of the bathroom use display function can be controlled by the user instructing the control means 10.

As described above, according to the first embodiment of the present invention, the door of the bathroom 11 is open, and the human body detecting means 9 reacts only when a person crosses in front of the human body detecting means 9. In addition, the human body detecting means 9 reacts only by entering the bathroom 11 for a short time in order to plug the bathtub 3, that is, when the bathroom 11 is only entered for a short time. However, it is possible to prevent the human body detecting means 9 from reacting and notifying the notification unit 14 of the kitchen remote control 13, and it is possible to provide a hot water supply device having improved detection accuracy of entering a person into the bathroom 11.

In addition to this, when entering the bathroom 11 for the purpose of bathing, the notification unit 14 of the kitchen remote controller 13 can be appropriately notified to that effect, so that the accuracy of detecting the entry of a person into the bathroom 11 has been improved. A hot water supply device can be provided.

As described above, since the hot water supply device according to the present invention has good detection accuracy of the entry of a person into the bathroom, it is applied to the hot water supply device having a function of detecting the entry of a person into the bathroom using electricity or gas as a heat source. it can.

1 Hot water storage tank 2 Heat pump (Hot water storage tank water heating means)
3 Bathtub 4 Heat exchanger (bathtub water heating means)
5 1st circulation pump 6 2nd circulation pump 8 Bathroom remote controller 9 Human body detection means (infrared sensor)
10 Control means 11 Bathroom 12 people 13 Kitchen remote control 14 Notification unit

Claims (2)

It is provided with a human body detecting means installed in the bathroom, a kitchen remote control, a bathtub water heating means, and a control means, and when the human body detecting means detects the presence of a person in the bathroom, that fact is notified. When the kitchen remote controller has a function of notifying the kitchen and there is no hot water in the bathtub, even if the human body detecting means detects the entry of a person into the bathroom, the above-mentioned fact is given within the first predetermined time. A hot water supply device that does not notify the kitchen remote control. When the bathtub water heating means has a bath heat retention operation function for keeping hot water in the bathtub warm, and the human body detecting means detects the entry of a person into the bathroom during the execution of the bath heat retention operation function. The hot water supply device according to claim 1, wherein the kitchen remote control is notified to that effect within a second predetermined time shorter than the first predetermined time.

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