JPH0212335B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a domestic water heater.

Conventional configuration and its problems In recent years, with the spread of coffee, ramen, etc., opportunities to use large amounts of hot water have increased. Therefore,
There is a demand for a water heater that allows hot water to be used at any time. However, it is difficult to tell whether the water in the water heater is fully boiled or not, so there are still many mistakes made by using unboiled water to make drinks that are undrinkable. Demand was high.

Therefore, as a countermeasure to the above problem, a water heater as shown in FIG. 1 was introduced.

This device is a hot water storage means 1 that boils water and keeps it warm.
, a heating means 2 for heating the hot water storage means 1 , a temperature control means 3 inserted between the heating means 2 and the power source, which detects the temperature of the hot water and operates to stop energizing the heater 2 ; A lighting means 4 that operates and lights up only when the means 3 is in operation, a switch means 5 operated by the user to supply hot water, a hot water supply control means 6 that operates upon receiving a signal from the switch means 5, and a hot water supply system. The hot water supply driving means 7 is driven by a control means 6 and supplies hot water from the hot water storage means 1. In the device configured as described above, the heating means 2 heats the water in the hot water storage means 1, and when the temperature reaches a certain temperature, the temperature control means 3 is activated, stops the power supply to the heating heater 2, and activates the lighting means 4, and the hot water storage means 1 is heated. It is displayed to the user that the temperature of the hot water in the room 1 has reached a certain temperature or higher. Then, the temperature control means 3 controls the heater 2 so that the temperature of the water becomes constant. It is activated in response to a signal output from the switch means by the user's operation, and drives the hot water supply drive means 7 to supply hot water from the hot water storage means 1.
However, in this conventional hot water supply device, if the user operates the switch means 5 without checking the lighting means 4 which indicates that the water temperature has reached a certain temperature or higher, lukewarm water that has not yet been boiled is supplied. There was a possibility. In other words, erroneous operations were sometimes performed.

OBJECTS OF THE INVENTION It is an object of the present invention to provide a water heater that eliminates the above-mentioned conventional drawbacks and eliminates erroneous operation so that hot water at an appropriate temperature can always be supplied.

Structure of the Invention In order to achieve the above-mentioned object, the present invention provides a hot water storage means for boiling water and keeping it warm, a heating means for heating the hot water storage means, and a heating means inserted between the heating means and a power source to detect the temperature of the water and operate. a temperature control means that stops energizing the heating means; a switch operated by a user to supply hot water; and a hot water supply control means that receives a signal from the switch and operates only when the temperature control means is operated. The hot water supply drive means is driven by the hot water supply control means to supply hot water from the hot water storage means, and based on this configuration, when the hot water in the hot water storage means reaches a certain temperature or higher, the temperature control means is activated. Otherwise, the hot water supply control means will not operate, and even if the switch means is operated, the hot water supply drive means will not be driven, thereby completely eliminating erroneous operations of supplying hot water below a certain temperature.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings.

In FIG. 2, 11 is a hot water storage means, 12 is a heating means, 13 is a temperature control means, 14 is a switch means, 15 is a hot water supply control means, and 16 is a hot water supply driving means. The operation of each of these parts will be explained in detail based on FIG. 22 in the figure is a heating heater, 23
is a thermostat which detects the temperature of the water and controls the energization of the heater 22 so that the water temperature remains constant. 15 is a hot water supply control device, and to explain its internal configuration, 24 is a capacitor, which is connected to both ends of the thermostat 23 via a resistor 25 and a diode 26.
It is also connected in parallel with the constant voltage diode 27, and when the thermostat 23 is opened, a power supply voltage is applied to both ends of the thermostat 23. Then, a rectified and stepped down voltage is generated across the capacitor 24. The voltage is
It is applied to the gate of the triac 29 via a switching element 28 operated by the switching means 14. The triax 29 is inserted between the hot water supply driving means 16 and the power supply to control the hot water supply driving means 16.

In the above configuration, the operation thereof will be described. The thermostat 23 detects the temperature of the water, opens and closes it, and controls the heater 22 to maintain a constant temperature. When the water temperature is low and the thermostat 23 is closed, the voltage across the thermostat 23 is equal to 0, and the voltage across the capacitor 24 is also 0, so even if the switch means 14 is operated, no voltage is applied to the gate of the triac 29. Therefore, the triax 29 is not conductive and the hot water supply drive means 1
6 is not driven.

When the water temperature is high and the thermostat 23 is open, a power supply voltage is applied to both ends of the thermostat 23 via the heater 22. And that voltage is diode 2
6, a resistor 25, a constant voltage diode 27, and a capacitor 24 to make the DC constant voltage, and when the switching means 14 is operated and the switching element 28 is operated, the triax 29 becomes conductive and the hot water supply driving means 16 is energized. Provide hot water.

As mentioned above, if the water temperature does not reach a certain level,
If the thermostat 23 does not open, in that case, the hot water supply drive means 1
6 cannot be driven even if the switch means 14 is operated.

Effects of the Invention As is clear from the above explanation, the water heater of the present invention cannot supply hot water unless the water temperature reaches a certain temperature. It eliminates the economical and time-consuming waste of making undrinkable cold drinks, has a relatively simple structure, and has great industrial value.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing a conventional water heater, FIG. 2 is a block diagram showing a water heater according to the present invention, and FIG. 3 is an electric circuit diagram showing an embodiment of the water heater. DESCRIPTION OF SYMBOLS 11... Hot water storage means, 12... Heating means, 13... Temperature control means, 14... Switch means, 15... Hot water supply control means, 16... Hot water supply driving means.

Claims (1)

[Claims] 1. A hot water storage means for boiling water and keeping it warm; a heating means for heating the hot water storage means; and a temperature control means inserted between the heating means and a power source to detect the temperature of the hot water and operate to control energization to the heating means. a switch means operated by the user to supply hot water; a hot water supply control means that operates only when the temperature control means is activated in response to a signal from the switch means; and a hot water supply control means driven by the hot water supply control means. A hot water supply device comprising a hot water supply drive means.