JP3643701B2 - Electric water heater - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an electric water heater in which a main board or the like having a hot plate and an electronic circuit is separated from a built-in pedestal body and a liquid container.
[0002]
[Prior art]
Conventionally, an electric water heater has a hot plate provided with a heater in the center upper part of the pedestal body, a detachable liquid storage container placed on the hot plate, a temperature control knob on the front of the pedestal body, An operation panel equipped with a heat insulation lamp, etc. is provided, an operation panel board that is operated by a temperature operation knob on the inner front of the pedestal body, a main board equipped with electronic circuits, and a bottom lid that closes the inside of the pedestal body. Then, each substrate was operated from a plug inserted into a plug receiver provided on the pedestal body, and the hot plate was heated by a heater to boil the liquid in the container.
[0003]
[Problems to be solved by the invention]
However, the inside of the pedestal body covered with the bottom lid of this electric water heater becomes a temperature much higher than the temperature of the outside air due to the heat of the hot platen, and the high heat is provided with the substrates in the pedestal body, in particular the electronic circuit. There is a problem in that the main board is adversely affected and normal operation cannot be performed.
[0004]
Therefore, the present invention solves the problems of the conventional electric water heater, and the structure of the base body is simple, the number of parts constituting the base body is very small, and the assembling work is very It is easy, and there is no complicated work, and the cost can be greatly reduced. In addition, the main plate in the pedestal main body is divided into two parts, the hot plate side and the main substrate side, so as not to affect the high heat of the hot plate, so it will operate even if the container is frequently attached and detached The main board or the like can be performed by normal operation .
[0005]
[Means for Solving the Problems]
In order to achieve the above object, the electric water heater 1 of the present invention is provided with a bottomed guide tube 8 having an opening in the center of the pedestal main body 3 and with the opening peripheral wall hanging downward, and a heater 9 is provided in the guide tube 8 . An operation panel provided with a temperature control knob 11 and the like provided in front of the guide tube 8 of the pedestal main body 3 by extending the provided heat plate 2 and providing a detachable and liquid-containing container 4 placed on the heat plate 2. 12 is provided, the operation panel substrate 14 that operates by temperature manipulation knob 11 inside the front portion of the base body 3, the provided main board 15 having an electronic circuit for operating the heater 9 and the like, the inner side lower portion of the pedestal body 3 in electric water heater 1 having a bottom lid 6 for closing, the guide tube 8 the lower portion of the pedestal body 3, the boundary between the hot plate 2 side and the operation panel substrate 14 and the main substrate 15 side in the base body, guide It bisects the inner lower portion of the pedestal body with cylindrical 8 That the provided with dividing ribs 16, the boundary between bottom entire periphery covered by a sheet of bottom cover 6, the heating plate 2 side of the bottom cover operating panel substrate 14 and the main substrate 15 side of the base body 3, the bottom cover and vertically bottom lid divided ribs 32 which bisects the interior, at setting the bottom lid 6 in the bottom of the base body 3 overlaps the bottom cover divided rib 32 of the divided rib 16 and bottom lid 6 of the base body 3 The configuration is as follows.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
1 is a front view of an embodiment of the present invention, FIG. 2 is a longitudinal sectional view of the embodiment of the present invention, and FIG. 3 is an exploded perspective view showing a main part of the embodiment of the present invention.
The electric water heater 1 includes a pedestal main body 3 provided with a hot plate 2, a bottom lid 6 that covers the bottom of the pedestal main body 3, a detachable container 4 that is placed on the center upper portion of the pedestal main body 3, and a container 4 And a lid body 5 covering the upper mouth. Reference numeral 31 denotes a handle.
[0007]
The container 4 is formed in a single-bottomed cylindrical shape with a wide-mouthed mouth using heat-resistant glass, metal, or ceramic material. The container 4 is provided with a spout 7 extending obliquely downward at the front end of the mouth. In this container 4, a tightening body of a handle 31 is fitted on the lower outer periphery of the spout 7.
[0008]
The pedestal main body 3 is formed of a heat-resistant synthetic resin material, and is provided with a bottomed guide cylinder 8 that is hollow inside, opens at the center of the top surface, and has a peripheral wall that hangs downward. The pedestal main body 3 is provided with a hot plate 2 and a hot plate cover 10 provided with a heater 9 in a guide tube 8, and an operation panel 12 provided with a temperature operation knob 11 and the like on the upper surface of the front of the pedestal main body 3. A switch board 13 that operates the heater 9, an operation panel board 14 that is operated by the temperature operation knob 11, and a main board 15 that is provided with an electronic circuit that operates each operating portion are provided inside the pedestal main body 3 below the cylinder 8. .
[0009]
As shown in FIG. 3, the pedestal main body 3 is provided with the heat plate 2 side at the rear of the pedestal main body, the operation panel substrate 14 and the main substrate 15 are provided at the front of the pedestal main body, and a dividing rib 16 is disposed at the boundary. ing. As shown in FIG. 2, the split ribs 16 of the pedestal main body 3 overlap with the bottom lid split ribs 32 of the bottom cover, which will be described later, and the heat on the rear side of the heat plate 2 in the pedestal main body 3 is heated in the front of the pedestal main body 3. This is shielded from flowing out to the main board 15 side. As shown in FIG. 3, the pedestal body 3 is formed with an annular groove 17 for shielding the heat of the hot plate 2 around the guide tube 8, and a lower portion of a thermistor member described later is formed at the center of the bottom surface of the guide tube 8. A bottom hole is provided so that it can move up and down. Reference numeral 18 denotes a boss for attaching each substrate and a bottom lid described later, and 19 denotes a terminal hole for hanging two terminals of the heater 9.
[0010]
The operation panel 12 of the pedestal body 3 is provided with a hole 20 for a heat insulation lamp of the operation panel substrate 14, an operation plate 21 for a boiling switch, a temperature operation knob 11 for rotating a temperature operation lever, and the like. The temperature operation knob 11 is engaged with a temperature operation lever of the operation panel substrate 14 via a spacer 22 and can be freely changed in temperature from a low temperature to a high temperature and from a high temperature to a low temperature by rotating on the operation panel 12. It is said.
The operation panel board 14 is screwed to the back side of the operation panel 12 of the pedestal main body 3, and a heat retention lamp 23, a boiling switch 24, a temperature operation lever 25, etc. are projected on the surface and wired by a printed circuit. .
[0011]
The main board 15 is screwed to bosses 18, 18 which are close to the annular groove 17 inside the pedestal main body 3 and protrude from the bottom surface of the guide cylinder 8. The main board 15 is provided with an electronic circuit made of a semiconductor or the like, and the current conducted by the plug receiver is passed through the operation panel board 14 and the switch board 13 to the thermistor, switch, heater 9, temperature control lever 25 and the like which will be described later. It leads.
[0012]
The switch board 13 is screwed to the bottom surface of the guide cylinder 8 of the pedestal main body 3, and a switch 28 for turning on / off the power to the heater 9 on the board 13 by a holder 30 which can be moved up and down on a thermistor member 27 described later. And wired by a printed circuit. The switch board 13 is provided with a shielding plate 29 on the upper surface so as not to receive heat directly from the heat plate 2 of the base body 3. The shielding plate 29 shields high-temperature heat transmitted from the hot plate 2 through the guide tube 8 of the pedestal main body 3 to reduce the influence on the switch substrate 13.
[0013]
The hot plate 2 disposed in the guide tube 8 of the pedestal main body 3 is formed in a disk shape with a central opening by a metal material having good thermal conductivity, particularly aluminum die casting. The upper surface of the heat plate 2 is formed in a flat shape so as to be in surface contact with the bottom surface of the container 4, and the central opening is small so that the upper part of the thermistor cover that can be moved up and down of the thermistor member 27 described later can be inserted. Is the diameter.
The heater 9 for heating the hot plate 2 is formed in a ring shape on the lower peripheral wall of the hot plate 2 by a sheathed heater, and two terminals of the heater 9 pass through the terminal holes 19 of the guide tube 8 and guide cylinders. 8 protrudes inside the base body 3 outside.
[0014]
A hot plate cover 10 is provided between the hot plate 2 and the guide tube 8 of the base body 3 so as to surround the hot plate 2. The hot plate cover 10 is formed in a shallow bottomed cylindrical shape, and a central hole communicating with the central opening of the hot plate 2 and the bottom hole of the guide tube 8 is provided at the center of the bottom surface. The hot plate cover 10 functions as a shielding tube for preventing the heat of the hot plate 2 from being directed upward and dissipating heat into the guide tube 8 or the pedestal main body 3 outside the guide tube 8.
[0015]
The thermistor member 27 indirectly senses the temperature of the liquid in the container 4 and acts on the electronic circuit of the main substrate 15 to turn on and off the heater 9, a thermistor cover that covers the thermistor and can move up and down, and the thermistor An attachment member that surrounds the cover and passes through the central hole of the hot plate cover 10 and is attached to the bottom wall of the hot plate cover 10 and the switch 28 of the switch board 13 through the bottom hole of the guide tube 8 as the thermistor cover moves up and down. It consists of a holder 30 that turns on and off.
[0016]
The bottom cover 6 is covered along the lower outer peripheral wall of the pedestal main body 3 so as to cover the inside of the pedestal main body 3, and in this set state, the boundary between the hot plate 2 side, the operation panel substrate 14 and the main substrate 15 side. The bottom lid dividing rib 32 is provided on the bottom. As shown in FIG. 2, the bottom lid dividing rib 32 overlaps along the rear wall of the dividing rib 16 of the pedestal main body 3 in the set state, and the rear heating plate 2 side, the front operation panel board 14 and the main board. It is divided into 15 sides.
[0017]
Although the embodiments considered to be representative of the present invention have been described above, the present invention is not necessarily limited only to the structures of these embodiments, and includes the above-described configuration requirements according to the present invention. It can be implemented with appropriate modifications within the scope of the following effects, and can be applied to electric products such as electric pots and electric heaters that use substrates equipped with electronic circuits. Applicable.
[0018]
【The invention's effect】
As is clear from the above description, the electric water heater according to the present invention has a bottomed guide tube that opens in the center of the pedestal body and hangs down the peripheral wall of the opening , and a heater is provided in the guide tube . A detachable and liquid-contained container placed on the hot plate is provided, and an operation panel with a temperature control knob is provided in front of the guide tube of the pedestal body. operation panel board operated by temperature manipulation knob inside front of the main board having an electronic circuit for operating the heater or the like is provided, in the electric water heater having a bottom lid for closing the inner side lower portion of the base body, At the lower part of the guide cylinder of the pedestal body, a dividing rib for dividing the inner lower part of the pedestal body together with the guide cylinder is provided at the boundary between the heat plate side in the pedestal body and the operation panel board and the main board side . Bottom all around Covered by a single bottom lid, on the border of the hot plate surface of the bottom cover and the operation panel substrate and the main substrate side, the inner bottom lid to vertically bottom lid dividing ribs bisecting the bottom to the bottom of the base body Since the split rib of the pedestal main body and the bottom lid split rib of the bottom lid overlap each other with the lid set, the structure of the pedestal main body is simple and the number of parts constituting the pedestal main body is extremely high It requires less, the assembly work is very easy, there is no complicated work, and the cost can be greatly reduced. In addition, the main plate in the pedestal main body is divided into two parts, the hot plate side and the main substrate side, so as not to affect the high heat of the hot plate, so it will operate even if the container is frequently attached and detached Thus, it has been possible to expect a remarkable effect that the main board and the like can be performed by normal operation .
[Brief description of the drawings]
FIG. 1 is a front view of an embodiment of the present invention.
FIG. 2 is a longitudinal sectional view of an embodiment of the present invention.
FIG. 3 is an exploded perspective view showing a main part of the embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Electric water heater 2 ... Heat plate 3 ... Base body 4 ... Container 5 ... Cover body 6 ... Bottom cover 7 ... Spout 8 ... Guide pipe 9 ... Heater 10 ... Heat plate cover 11 ... Temperature control knob 12 ... Control panel 13 ... switch board 14 ... operation panel board 15 ... main board 16 ... dividing rib 17 ... annular groove 18 ... boss 19 ... terminal hole 20 ... heat insulation lamp hole 21 ... operation plate 22 ... spacer 23 ... heat insulation lamp 24 ... boiling switch 25 ... Temperature control lever 26 ... Plug receiver 27 ... Thermistor member 28 ... Switch 29 ... Shielding closure plate 30 ... Holder 31 ... Handle 32 ... Bottom lid split rib

Claims (1)

A hot plate (2) provided with a bottomed guide tube (8) having an opening at the center of the pedestal main body (3) and having the opening peripheral wall suspended downward, and a heater (9) in the guide tube (8) . And a detachable liquid container (4) to be placed on the heating plate (2) is provided, and a temperature operation knob (11) is provided in front of the guide tube (8) of the base body (3). An operation panel (12) provided with an electronic circuit for operating an operation panel board (14) operated by a temperature operation knob (11), a heater (9), etc. is provided at the inner front of the base body (3). and the provided main board (15), in the base body (3) electric kettle (1) to the inner side lower provided bottom lid (6) closing the guide tube of the base body (3) (8) at the bottom, the heat plate in the base body (2) side and the operation panel substrate (14) and the boundary between the main board (15) side Guide tube with (8) with the inner lower portion of the base body provided bisection dividing rib (16), covered by a sheet of bottom cover bottom entire circumference of the base body (3) (6), the bottom lid thermal At the boundary between the plate (2) side and the operation panel board (14) and the main board (15) side, a bottom lid dividing rib (32) that divides the inside of the bottom lid into two parts is suspended, and the bottom of the base body (3) An electric water heater characterized in that the split rib (16) of the pedestal main body (3) and the bottom cover split rib (32) of the bottom cover (6) are overlapped with the bottom cover (6) set on the water heater .

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