JPH0618537B2 - Electric water heater - Google Patents

Description

TECHNICAL FIELD The present invention relates to an electric water heater having an electric hot water supply function for heating and retaining the contained liquid.

<Prior Art> A conventional electric water heater having an electric hot water supply function is
As shown in the figure, "No. 60-173247", the electromagnetic pump 5
A method of applying an AC voltage to 1 and sending pressurized air into the container 52 to increase the pressure inside the container 52 and discharging the liquid out of the body is used, and the operation method is provided in the lid portion 53. Turn on the knob 54 to turn on the electromagnetic pump 51.
The switch 55 for FF control is opened and closed, and it is a control as to whether or not the liquid is discharged.

<Problems to be Solved by the Invention> In such a conventional configuration, when the liquid in the container is led out, it is led out only at a preset constant outflow amount. When putting it in a small capacity container, the momentum is too strong and the hot water may scatter and cause burns, or conversely, when putting it in a large capacity container such as a pot, it takes time and is inconvenient to use. There was such a problem.

Further, since it is an air pressurization type, it is necessary to block the vapor passage at the time of discharging the liquid. Therefore, a mechanism for closing the vapor passage in conjunction with the pressing operation of the knob is required, and the operation load becomes large and the cost due to the complicated configuration is required. There were problems such as getting expensive. Furthermore, since the knob is provided on the lid, when the lid is detached from the main body and washed, there is a great possibility that water droplets may adhere to the inside of the knob and penetrate into the knob to cause a malfunction. .

<Means for Solving the Problem> In order to solve such a problem, the present invention provides a main body, a container for storing a liquid arranged in the main body, a lid body for covering an opening of the container, A heating element that heats the liquid in the container, an electric pump that discharges the liquid in the container to the outside of the body, a drive circuit that controls the operation of the pump, and an external operation that constitutes a part of the drive circuit. A rotary variable resistor that adjusts the rotation speed of the pump by the: and a knob that rotates in conjunction with the variable resistor, the knob being opened at the top and bottom to guide the liquid to the outside. The electric water heater is provided above the lead-out pipe in the nose portion which constitutes a part of the stored main body.

<Operation> According to the above configuration, since the variable portion and the knob interlocking with it are rotational movements, adjustment during operation is easy, and
Since it is located above the nose that forms part of the main body that houses the lead-out pipe, there is no risk of burns due to splashing when ejecting liquid, and the lead-out port is blocked for some reason Even when the liquid overflows into the body, the liquid does not reach the operation section. In addition, even if water is accidentally overflowed when water is supplied to the container, there is no possibility that water will enter the operating portion. Also, when washing the lid with water,
Water does not adhere to or enter the inside of the knob to cause a malfunction, and further, when the body is tumbled, the knob does not collide with the installation surface, so damage to the operating portion can be prevented.

<Embodiment> An embodiment of the present invention will be described below with reference to FIGS.

FIG. 2 is a longitudinal sectional view of the electric water heater in this embodiment, and FIG. 3 is a perspective view showing the appearance thereof. In FIGS. 2 and 3, 1 is a main body, 2 is a container with an upper surface opening arranged in the main body, 3 is a lid that covers the opening of the container 2, and presses a lock knob 4 provided at the front thereof. By operating it, it is possible to open and close the opening of the container 2 and attach and detach it to and from the main body 1. 5 is a steam passage communicating with the inside of the container 2,
A heating element 6 heats the liquid in the container 2. An electric pump 7 is driven by a motor 8 and sucks the liquid through a first communication pipe 11 that connects a guide hole 9 provided in the lower portion of the container 2 and a suction port 10 of the pump 7, Second communication pipe that connects the discharge port 12 of the container and the outlet 13 to the outside of the body
The liquid is discharged to the outside of the body via 14. Reference numeral 15 is a rotary variable resistor that constitutes a part of a drive circuit that controls the operation of the pump 7 and that adjusts the rotation speed of the pump 7. Reference numeral 16 denotes a knob that is interlocked with the variable resistor 15, and constitutes an operation unit 17 together with some components described later.

FIG. 4 shows an example of a circuit using the variable resistor 15 as a speed adjusting means of the pump 7. By changing the voltage applied to the motor 8 with the variable resistor 15, the motor 8 or pump 7 It controls the rotation speed.

1 and 5 show in detail an example of the configuration of the operating portion 17, and in FIGS. 1 and 5, reference numeral 18 denotes a bearing which is interlocked with the knob 16 and the rotary variable resistor 15. The variable resistor 15 is attached to the attachment plate 19 with the nut 20. Reference numeral 21 is a switch for turning on / off the power supply to the motor 8 for driving the pump 7, and its button 22 is attached to the mounting plate 19 so as to be in pressure contact with the flange 23 of the bearing 18, and the recess formed in the flange 23. When 24 is located above button 22 on switch 21,
The button 22 is in the free state, at which time the power to the motor 8 is turned off.

The operation portion 17 is provided above the nose portion 25 that houses the lead-out pipe 13, the position of the operation portion 17 is higher than the opening 26 above the lead-out pipe 13, and the nose portion 25 The mounting surface 27 of the formed knob 16 is located at a position higher than the upper end 28 of the container housing portion of the main body, which is the highest overflow surface of the container. Therefore, when the knob 16 is operated to draw out the liquid, the position of the hand is away from the drawing-out port 29 of the drawing-out pipe 13, so that there is no risk of burns or the like due to steam, and the lid 3 is Since there is no operation part 17, there is no need to worry about water droplets adhering or infiltrating even if the lid 3 is washed with water, and the outlet 29 is blocked for some reason and overflows from the upper opening 26. Or, again,
Even if the container is accidentally overflowed to the outside when it is supplied with water, there is no possibility of reaching the operation portion 17, and therefore there is no fear of failure due to infiltration of liquid. Furthermore, since the knob 16 and the like do not collide with the installation surface when the body is tumbled, it is possible to prevent the operating portion 17 from being damaged.

<Effects of the Invention> As is clear from the above embodiments, the electric water heater of the present invention has a variable portion for adjusting the rotation speed of the pump and a knob as a rotary motion, and an operation portion constituted by them is provided with a lead pipe. Since the knob is rotatable by being provided above the nose which constitutes a part of the stored main body, the liquid can be easily discharged and the discharge amount can be finely adjusted. In addition, there is no risk of burns due to splashing when ejecting liquid, and the liquid reaches the operating part even when the outlet is blocked for some reason and the liquid overflows from the upper part of the outlet pipe into the body. Never. Further, even if the container is accidentally overflowed when water is supplied, there is no possibility that water will enter the operating portion. Since the knob is provided on the main body side, the lid part is washed with water so that water does not adhere to the inside of the knob and enter the knob, which does not cause operation failure.Furthermore, the knob etc. is installed when the body is tumbled. Since it does not collide with the surface, it is possible to prevent damage to the operating portion, and so on.

[Brief description of drawings]

FIG. 1 is an enlarged exploded perspective view of an essential part showing an embodiment of the present invention,
2 is a longitudinal sectional view of the electric water heater of the same embodiment, FIG. 3 is a perspective view showing the same appearance, FIG. 4 is a motor drive circuit diagram of the same embodiment, and FIG. 5 is shown in FIG. FIG. 6 is a vertical sectional view showing a conventional example. 1 ... Main body, 2 ... Container, 3 ... Lid, 6 ... Heating element,
7 ... Pump, 8 ... Motor, 13 ... Outlet pipe, 15 ...
… Variable resistor, 16 …… Knob, 17 …… Operator, 25 …… Nose.

Front page continuation (72) Inventor Keiki Hama 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (56) References Japanese Patent Publication No. 3-45642 (JP, B2)

Claims (1)

[Claims] 1. A main body, a container for accommodating a liquid arranged in the main body, a lid for covering an opening of the container, a heating element for heating the liquid in the container, and a liquid in the container. An electric pump that discharges to the outside of the body, a drive circuit that controls the operation of the pump, a rotary variable resistor that constitutes a part of the drive circuit and adjusts the rotation speed of the pump by an external operation, The variable resistor has a knob that rotates in conjunction with the variable resistor, and the knob is opened at the top and bottom to lead out the nose portion that forms a part of the main body that houses the lead-out pipe that guides the liquid to the outside of the vessel. An electric water heater installed above the pipe.