JPH0556853A - Electric water boiler - Google Patents

Abstract

PURPOSE:To enable the discharging of a hot water from the beginning without discharging chilled water left in a discharge means at the end of reboiling. CONSTITUTION:A path of a discharge means 3 for discharging with an electric pump is branched between the inside and the outside of a container, a water path is switched over to the inside of the container for a specified time from the start of reheating and the discharge means 3 is driven to circulate a liquid into a container 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric water heater for heating and retaining the temperature of a liquid contained in a container.

[0002]

2. Description of the Related Art Heretofore, an electric water heater of this type, which maintains a heat-retaining temperature after boiling and uses an air pump or an electric pump, has been pumped from the bottom of a container and discharged directly from a discharge port.

[0003]

However, in such a conventional structure, the hot water in the discharge pipe connecting the discharge ports is discharged from the bottom of the container at the beginning of hot water discharge. For this reason, for example, if the temperature of the hot water in the container is maintained for a long period of time, the hot water in the container is maintained at the heat insulating temperature by the heat insulating means, but the temperature of the hot water in the discharge pipe becomes lower than that in the container. Even if the hot water is reheated in this state to obtain hot water immediately after boiling, it is difficult to reach the temperature inside the container up to the inside of the discharge pipe. There was a problem that it would come out.

[0004]

In order to solve the above problems, the present invention provides a container for containing a liquid, a heating means for heating the liquid in the container, and a discharging means for pumping out the liquid in the container. , Switching means for switching the hot water passage of the liquid pumped out by the discharging means connected to the discharging means to the outside of the container and the inside of the container, a clocking means for clocking a predetermined time, and a clocking of the clocking means Heating starting means for switching, a hot water discharging means for switching the hot water discharging path of the switching means from inside the container to outside the container, and when the signal of the heating starting means is input, the heating means is energized, and the discharging means is the time measuring means. Is provided with a control means for driving until a predetermined time is measured.

[0005]

With the above-described structure, the present invention circulates the liquid in the container and the liquid in the hot water passage through the hot water discharge route initially switched into the container at the start of heating, thereby allowing the inside and the hot water passage of the container. The temperature of the liquid can be made uniform, and hot water having a temperature equivalent to that in the container can be provided from the beginning when hot water is discharged.

[0006]

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

In FIG. 1, 1 is a container for containing a liquid,
Reference numeral 2 is a heating means that comes into contact with the container 1 to heat the liquid therein.

Reference numeral 3 is a discharge means for pumping out liquid from the container by an electric pump, 4 is a switch means above the discharge means 3 for switching a hot water passage of the liquid between inside and outside the container, and 6 is a switch means 4 Is a hot water outlet means for switching to the outside of the container. The switching means 4 is normally switched to the direction of discharging the liquid into the container, but when the tapping means 6 is driven, the switching means 4 is switched to the outside of the container. Further, in this embodiment, when the hot water discharging means 6 is driven, the discharging means 3 is driven by the control means 7 while being driven.

Reference numeral 8 is a clocking means for clocking a predetermined time, 5 is a heating start means for starting the heating of the heating means 2 and for starting the clocking of the clock means 8, and 7 is the heating start means 5
Is a control means for driving the heating means 2 and the discharging means 3 in response to the input of the above, and stopping the discharging means 3 by the time counting means 8.

The switching means 4 is constructed as shown in FIG. That is, the path led out from the bottom of the container 1 is branched into the path 31 returning to the upper part of the container 1 and the path 32 to the outside of the container, and the solenoid valve 33 selectively opens and closes. The solenoid valve 33 is set so that the return path 31 is opened only when the hot water outlet means 6 receives an input.

FIG. 3 shows a specific circuit configuration. In the figure, 9 is an AC power supply for supplying current to the heating means 2 and the discharging means 3, and 11 is a DC power supply for supplying current to the switching means 4 and the like.

The heating means 2 comprises a relay contact 2a, a heating element 2c, a heating section connected in series with the AC power source 9 and a control section for the relay coil 2b. The heating element 2c is energized by passing a current through the relay contact 2c and closing the relay contact 2c.

The discharging means 3 is composed of a motor 3a for pumping liquid upward, a relay contact 3b and a relay coil 3c, and an electric current is passed through the relay coil 3c by the output signal of the control means 7 to close the relay contact 3b. The motor 3a is driven by.

The switching means 4 is composed of an electromagnetic valve 33 for switching the water channel, and is connected to the DC power source in series with the tapping means 6. Further, when the tapping means 6 is turned on, it is connected so as to transmit an H signal to the control means 7.

The heating starting means 5 is composed of a switch, and its output is inputted to the control means 7.

In the present embodiment, the control means 7 and the clock means 8 are composed of a microcomputer, and their functions are realized by executing a program.

FIG. 4 shows a flow chart of a control method of the ejection means of the program stored in the microcomputer, and the operation will be described with this.

First, in step 21, the input of the hot water discharging means 6 is detected, and if hot water is being discharged, the discharging means 3 is turned on in step 24. Next, in step 21, if hot water is not being discharged, it is determined in step 22 whether or not there is an input from the heating start means, and if there is an input, in step 23 the heating means 2 is driven and the clock means is cleared, Go to step 24. If the heating start means is not input in step 22, it is determined in step 25 whether or not the discharge means 3 is already being driven. If it is being driven, the counting means 8 counts in step 26, and in step 27. If the predetermined time (5 seconds in this embodiment) has not elapsed, the process proceeds to step 24 and the circulation is continued.

If the discharging means 3 is stopped in step 25, or if the time measuring means 8 has passed a predetermined time in step 27, the process proceeds to step 28 to stop the discharging means 3.

With the above structure, the liquid in the discharge means can be easily circulated.

[0021]

As described above, according to the present invention, it is possible to provide hot water having a temperature equivalent to that in the container from the beginning when the hot water is discharged, and thus satisfying the user even when a small amount of hot water is discharged. We can provide hot water for you.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of an electric water heater according to an embodiment of the present invention.

FIG. 2 is a specific configuration diagram of a switching unit in the electric water heater.

FIG. 3 is a specific circuit diagram of an electric water heater according to an embodiment of the present invention.

FIG. 4 is a flowchart showing a process of the electric water heater.

[Explanation of symbols]

 1 Container 2 Heating Means 3 Discharging Means 4 Switching Means 5 Heating Starting Means 6 Hot Water Means 7 Control Means 8 Timing Means

Claims (1)

[Claims] 1. A container for containing a liquid, a heating means for heating the liquid in the container, a discharging means for pumping out the liquid in the container, and a tapping path for the liquid pumped out by the discharging means. Switching means for switching between the outside of the container and the inside of the container, timing means for timing a predetermined time, heating start means for starting the timing of the timing means, and tapping means for switching the tapping path of the switching means from inside the vessel to outside the vessel And an electric water heater provided with a control means for energizing the heating means when a signal from the heating start means is input and for driving the discharge means until the timekeeping means measures a predetermined time.