JPH1183171A - Hot water supply unit for bath - Google Patents

Abstract

PROBLEM TO BE SOLVED: To plainly display many operating modes at a display section. SOLUTION: An external input unit 24 has a display section 33 comprising sections 35-42 for displaying various operating modes corresponding to switches 25-32 for inputting the operating mode, and a section 34 for displaying other information. A plurality of operating modes corresponding to respective switches are displayed at a part of the display section 34 and when an operating mode is selected by pushing a switch, the display section 33 is switched to the selected operating mode.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bath water heater capable of hot water supply and additional heating of a bath.

[0002]

2. Description of the Related Art A conventional bath water heater has a configuration as shown in FIG.

Water passes through a water sensor 1 and a water temperature sensor 2 from a water inlet, absorbs heat in a hot water supply heat exchanger 3, passes through a hot water supply sensor 4 and a hot water supply control valve 5, and is discharged from a hot water outlet.
The gas passes through a hot water supply source electromagnetic valve 6 and a gas hot water supply proportional valve 7 from a gas inlet, and is burned by a hot water supply burner 8.

Bath water is supplied by a circulation pump 22 to a bath connection adapter 19, a return passage 13, a water level sensor 14, a switching three-way valve 15, a bath sensor 9, a water flow switch 10, a bath heat exchanger 11, an outgoing passage 12, and a bath connection. When the temperature of the hot water detected by the bath sensor 9 decreases, the gas passes through the bath source solenoid valve 16 and the bath proportional valve 17, burns in the bath burner 18, and transfers heat in the bath heat exchanger 11. Absorb and reheat the bath water.

When the hot water is supplied to the bathtub, the hot water that has absorbed heat in the hot water supply heat exchanger 3 passes through the hot water supply sensor 4 and the hot water supply amount control valve 5, the hot water supply electromagnetic valve 20, the cutoff valve 21, the access passage 12, and the bath water. It passes through the return passage 13 and enters the bathtub from the bath connection adapter 19.

[0006] The operation modes such as hot water supply, reheating, hot water filling, etc., input the operation mode settings and control the operation mode based on information of the external input device 50 capable of displaying the operation state and information of the external input device 50. This is performed by the control unit 23. As shown in FIG. 5, the external input device 50 includes a switch 51 for inputting an operation mode such as “bath automatic” for filling with hot water, and “flush” for reheating, a set temperature and a set amount of each operation mode. Switch 52 for setting etc.
And a display unit 53 for displaying an operation state of each operation mode.
It is composed of

[0007]

However, in the conventional bath water heater, since various displays are all displayed on the display unit 53 of the external input device 50, each display becomes small and the display unit 53 is difficult to see. Had.
Particularly, in a bathroom, the display unit 53 is cloudy, or there is a person who takes a bath with glasses removed, so that the display unit 53 is difficult to see. In addition, all the switches 51 are provided for the operation mode.
There was a problem that the number of 1s increased and it was difficult to use and understand.

[0008]

In order to solve the above-mentioned problems, a bath water heater according to the present invention includes a plurality of switches and a display unit capable of displaying a plurality of contents, and a part of a display unit corresponding to each switch. When the operation mode is displayed by pressing the switch and selecting the operation mode, the display section is changed to the display section of the operation mode, the operation state of the operation mode is displayed on the display section, and the setting of the operation mode is input. It is provided with a possible external input device.

According to the present invention, since only the necessary display is displayed on the display unit of the external input device, each display is enlarged, and even if there is a person who takes a bath with the display unit clouded off in the bathroom or with glasses removed. The display unit of the external input device can be easily seen.
In addition, since the number of switches at the time of use is small and the contents of the operation mode are displayed corresponding to the switches, the external input device can be easily used and easily understood.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 is a hot water supply heat exchanger for heating supply water to hot water by a burner, a water temperature sensor provided in a supply water passage, and a water amount sensor for detecting supply water temperature and detecting a supply water flow rate. And a hot water supply sensor provided in the hot water path and detecting a hot water temperature and a hot water supply amount control valve for controlling a hot water flow rate, a bath heat exchanger for heating circulating water to hot water with a burner, and a bathtub to the bath heat exchanger. A return passage through which circulating water flows, a circulation pump that circulates bath water, a bath sensor that detects the temperature of the bath water, a three-way valve that switches between hot water supply and a bath passage, and a passage that connects the hot water supply hot water supply passage and the return passage. A hot water supply solenoid valve provided respectively, a forward passage provided downstream from the bath heat exchanger, a plurality of switches and a display unit capable of displaying a plurality of contents, and a display unit corresponding to each switch. part When a plurality of operation modes are displayed and the switch is selected by pressing the switch, the display changes to the display of the operation mode, the operation status of the operation mode is displayed on the display, and the setting of the operation mode can be input. An input device is provided.

Since only the necessary display is displayed on the display unit of the external input device, each display becomes large, and even if there is a display unit in a bathroom or a person who takes a bath with glasses removed, there is no need for the external input device. The display can be easily viewed. In addition, since the number of switches at the time of use is small and the contents of the operation mode are displayed corresponding to the switches, the external input device can be easily used and easily understood.

According to a second aspect of the present invention, when the operation mode setting switch is pressed to select the operation mode, the display section is changed to the display section of the operation mode without executing the operation mode. An external input device capable of inputting a setting change is provided.

[0013] Since the setting change of each operation mode can be inputted without pressing the operation mode switch, the setting of each operation mode can be confirmed before starting the operation, and the usability of the bath water heater can be confirmed. And safety can be improved.

[0014]

Embodiments of the present invention will be described below with reference to the drawings.

(Embodiment 1) In FIG. 1, water passes through a water amount sensor 1 and a water temperature sensor 2 from a water inlet and passes through a hot water supply heat exchanger 3
Then, the heat passes through the hot water supply sensor 4 and the hot water supply amount control valve 5 and is discharged from the hot water outlet. The gas passes through a hot water supply source electromagnetic valve 6 and a gas hot water supply proportional valve 7 from a gas inlet, and is burned by a hot water supply burner 8.

Bath water is supplied by a circulation pump 22 to a bath connection adapter 19, a return passage 13, a water level sensor 14, a switching three-way valve 15, a bath sensor 9, a water flow switch 10, a bath heat exchanger 11, an outgoing passage 12, and a bath connection. When the water circulates with the adapter 19 and the temperature of the hot water detected by the bath sensor 9 decreases, the gas passes through the bath source solenoid valve 16 and the bath proportional valve 17,
The water is burned by the bath burner 18, the heat is absorbed by the bath heat exchanger 11, and the bathtub water is additionally heated to the bath set temperature of the external input device 23.

As for the hot water in the bathtub, the hot water absorbed by the hot water supply heat exchanger 3 passes through the hot water supply sensor 4, the hot water supply amount control valve 5, the hot water supply electromagnetic valve 20, the cutoff valve 21, the access passage 12, and the bath water. It passes through the return passage 13 and enters the bathtub from the bath connection adapter 19.

The operation modes such as hot water supply, reheating, hot water filling, etc. are input to the operation mode setting, and the external input device 24 capable of displaying the operation state and the operation mode are controlled based on the information of the external input device 24. This is performed by the control unit 23.

As shown in FIG. 2, the external input device 24 is a switch 25 to 32 for inputting an operation mode such as "automatic bath" for filling with hot water and "reheating" for reheating.
And display units 35 to 42 for displaying the respective operation modes corresponding to the switches 25 to 32 for inputting the operation modes, and a display unit 33 including a display unit 34 for displaying other information.

For example, when the "automatic bath" switch 28 of the external input device 24 is pressed, the display unit 33 changes to a display unit comprising display units 43 to 49 as shown in FIG. Display the setting amount in large size and press switch 2
The settings can also be changed by pressing 8, 29, 31, 32. Then, the set temperature of the external input device 24,
Hot water is poured into the bathtub by the control means 23 based on the set amount.

Further, when the operation mode setting change switch 32 is pressed in the state of the external input device 24 shown in FIG. 2 and then, for example, a switch 28 of "automatic bath" is pressed, hot water is not poured into the bathtub, and the display unit is not displayed. Reference numeral 33 changes to a display unit including display units 43 to 49 as shown in FIG.
The settings can be changed by pressing 8, 29, 31, 32.

According to the above invention, only the necessary display is displayed on the display unit of the external input device, so that each display becomes large, and even if there is a person who takes a bath by removing the display unit in the bathroom or removing the glasses. The display unit of the external input device can be easily seen.
In addition, since the number of switches at the time of use is small and the contents of the operation mode are displayed corresponding to the switches, the external input device can be easily used and easily understood.

Further, since the setting of each operation mode can be inputted without pressing the operation mode switch, the setting of each operation mode can be confirmed before starting the operation, and the usability of the bath water heater can be improved. Improvement and safety can be achieved.

[0024]

As described above, the bath water heater of the present invention
Since only the necessary display is displayed on the display unit of the external input device, each display is enlarged, so that the display unit of the external input device can be easily seen, and the setting of each operation mode can be confirmed before starting operation, This has the effect that the usability and safety of the bath water heater can be improved.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a bath water heater according to Embodiment 1 of the present invention.

FIG. 2 is a configuration diagram of an external input device of the water heater.

FIG. 3 is a configuration diagram of another external input device of the water heater.

FIG. 4 is a configuration diagram of a conventional bath water heater.

FIG. 5 is a configuration diagram of an external input device of the water heater.

[Explanation of symbols]

 23 control means 24 external input device 25-31 switch 32 setting change switch 33-49 display unit

Claims (2)

[Claims] 1. A hot water supply heat exchanger for heating feed water to hot water by a burner, a water temperature sensor provided in a water supply passage for detecting a supply water temperature, a water flow sensor for detecting a supply flow rate, and a hot water temperature provided in a tap water passage. A hot water supply sensor for detecting the temperature of the hot water and a hot water supply amount control valve for controlling the flow rate of hot water, a bath heat exchanger for heating the circulating water to hot water with a burner, a return passage through which the circulating water flows from the bathtub to the bath heat exchanger, and a bathtub water A circulation pump for circulating water, a bath sensor for detecting the temperature of the hot water in the bathtub, a three-way valve for switching between hot water supply and a bath passage, and a hot water supply solenoid valve provided in a passage connecting a hot water supply outlet and a return passage, respectively. An outward passage provided downstream from the bath heat exchanger, and an external input device for setting an operation mode, the external input device includes a plurality of switches and a display unit capable of displaying a plurality of contents, A plurality of operation modes are displayed on a part of the display unit corresponding to the switch, and when the switch is pressed to select an operation mode, the display unit is changed to a display unit of the operation mode, and an operation state of the operation mode is displayed. Is displayed on the display unit. 2. The bath water heater according to claim 1, wherein a setting change switch for changing an operation mode is provided in the external input device.