JPH0225075Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a display device in a water heater such as an instantaneous water heater or a storage type water heater, as well as a solar water heater.

(Prior Art) In conventional water heaters, the outlet temperature and other hot water temperatures are generally displayed using, for example, a thermochromic body. For this reason, there is a disadvantage that accurate temperature display cannot be performed. Therefore, it is conceivable to display the temperature using a temperature display device equipped with a thermosensor that displays the hot water temperature detected by the hot water temperature detection function on the digital display, but this device does not allow the water heater to Temperature display is useless when not in use.

For this reason, if the digital display section can display temperatures such as the room temperature and outside air when the device is not in use, it is conceivable that the practical value will be greatly increased.

(Problems to be Solved by the Invention) The purpose of the present invention is to obtain a display device that satisfies such demands.

(Means for solving the problem) The present invention is equipped with a hot water temperature detection function that is equipped with a temperature sensor that detects the hot water temperature and other water temperatures on the water heater body, and a temperature sensor that detects the air temperature. In devices that are equipped with an air temperature detection function and are connected to the digital display via a switch to switch between the hot water temperature detection function and the air temperature detection function, the switch can be used to control the hot water temperature in conjunction with the operation of the water heater. It is configured so that it is switched and connected to the temperature detection function side.

(Example) An example of implementing the present invention will be described in connection with an instantaneous water heater.

In the drawing, 1 indicates the water heater main body, 2 indicates a water heat exchanger provided in the water heater main body 1, and 3 indicates a water stop valve inserted in the water supply channel 4 to the water heat exchanger 2. The water valve 3 is controlled to open and close by pressing a push button 6 equipped with a push button mechanism 5.

7 is a gas burner unit that heats the water heat exchanger 2; 8 is a gas passage that supplies fuel gas to the gas burner unit 7; The main burner 7, which includes an electromagnetic safety valve 10, supplies fuel gas to the normally lit burner 7a, which constitutes the gas burner unit 7, through both valves 9, 10.
In addition to both valves, fuel gas is supplied to b via a hydraulically responsive valve 11 located downstream thereof, and a starter burner 7c constituting the gas burner unit 7.
In addition to both valves 9 and 10, there is a pilot valve 1 facing downstream.
Fuel gas was supplied through 2.

At this time, the electromagnetic safety valve 10 is held open by the discharge charge of a capacitor (not shown) interposed in the ignition head initial forced hold circuit, and then by the electromotive force of the thermocouple 16 facing the gas burner unit 7.

In the drawings, reference numeral 17 denotes a micro switch inserted into the operating circuit (not shown) of the igniter 18, which is closed when the push button 14 is pressed near its end position.

The configuration up to now is not particularly different from what is conventionally known.

As shown in FIG. 3, the present invention has a hot water temperature detection function 20 equipped with a temperature sensor 19 that detects the outlet temperature, and an air temperature detection function 22 equipped with a temperature sensor 21 that detects the temperature. is provided so as to be freely switchable and connectable to the digital display section 24 via a changeover switch 23, and the changeover switch 23 is connected to the hot water temperature detection function 20 side in conjunction with the hot water tapping operation. To explain this in detail, the liquid crystal digital display section 24 is attached to the front surface of the water heater body 1, and in the illustrated example, the temperature sensor 19 of the hot water temperature detection function 20 is attached to the hot water outlet pipe 25 connected to the water heat exchanger 2.
The changeover switch 23 is linked to the operation of the water pressure responsive valve 11 to select the hot water temperature detection function 20 only when the water pressure response valve 11 is activated, thus displaying the hot water temperature on the digital display section 24 only when hot water is dispensed. I did it like that.

However, the switching of the switch 23 is made such that the switch itself is a flow switch interposed in the water supply channel 4 in conjunction with the water flow operation, and the water flow etc. always selects the hot water temperature detection function 20. Alternatively, the hot water temperature detection function 20 may be selected in advance when the push button 14 is locked in the intermediate position C in conjunction with the push operation of the push button 14, that is, before tapping the hot water. Water temperature detection function 2 by push button 14
If you switch it to the 0 side, you can not only display the water temperature, but also confirm that the water heater is being operated by the water temperature display, and the water heater can be left in operation. It has the effect of resolving the inconvenience of

In the above description, the temperature of the outlet hot water is displayed, but in the case of a storage water heater or a solar water heater, it goes without saying that the temperature of the stored hot water may be displayed.

It goes without saying that the digital display section and the like may be prepared separately from the main body of the water heater and used by connecting it to a temperature-sensitive sensor provided on the main body of the water heater as appropriate.

In addition, since it is not desirable for water heaters to change the displayed water temperature due to post-boiling development, it is better to use a delay circuit to display the water temperature after it has stabilized. Also, the units for water temperature and air temperature are the same, so there is no mistake. It is better to display "water temperature" and "air temperature" so that you can easily distinguish between the two.

(Effect of the invention) As described above, the present invention has a hot water temperature detection function equipped with a sensor that detects the hot water temperature and an air temperature detection function equipped with a sensor that detects the air temperature. In the case where the temperature detection function is switched and connected to the digital display section via a switch, the switch is switched to the hot water temperature detection function side in conjunction with the usage operation of the water heater. Therefore, it is advantageous that the water temperature can always be displayed on the digital display when the water heater is in use, such as when dispensing hot water, and appropriate measures can be taken accordingly. It has the effect of being able to display the temperature, which is convenient for practical purposes.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of one embodiment of the present invention, FIG. 2 is a cutaway plan view, FIG. 3 is an operating circuit diagram, and FIG. 4 is an explanatory diagram of the push mechanism. 19... Hot water temperature sensor, 20... Hot water temperature detection function, 21... Air temperature sensor, 22... Temperature detection function, 23... Changeover switch, 24... Digital display section.

Claims (1)

[Scope of utility model registration request] The water heater has a hot water temperature detection function with a temperature sensor that detects the tap water temperature and other water temperatures, and an air temperature detection function with a temperature sensor that detects the air temperature. A water heating device that is connected to a digital display section via a changeover switch, in which the changeover switch is connected to the hot water temperature detection function side in conjunction with the operation of the water heater. Display device in a vessel.