JPH075519U - Electric water heater - Google Patents

Abstract

(57) [Summary] [Purpose] To obtain an electric water heater in which a thermal fuse can be easily attached. [Structure] A container 1, a heating element 2 for heating a liquid in the container 1, a flat plate 3 for fixing the heating element 2 to the bottom surface of the container 1, a temperature fuse 4 for fusing at a predetermined temperature, and a temperature fuse 4 are fixed. In the electric water heater provided with the heat conducting member 5 that conducts heat, the leaf spring 6 that presses the heat conducting member 5 against the bottom surface of the container 1, and the flat plate 7 to which the leaf spring 6 is fixed, The claw portion 3a and the mounting hole 5a are provided in the heat conducting member 5,
Pass the mounting hole 5a of the heat conducting member 5 through the claw portion 3a of the flat plate 3,
A configuration in which the claw portion 3a is deformed to temporarily fix the thermal fuse 4, and the heat conduction member 5 is pressed and fixed to the bottom surface of the container 1 by the leaf spring 6.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an electric water heater equipped with a temperature fuse that heats a liquid and that melts when abnormal heating occurs.

[0002]

[Prior art]

 In the conventional electric water heater, when attaching the thermal fuse integrally fixed to the heat conducting member to the bottom surface of the container, the operator himself / herself fixes the thermal fuse to the bottom surface of the container and the thermal fuse is attached to the leaf spring. Was attached to the container by a fixed flat plate.

[0003]

[Problems to be solved by the device]

 In the above-mentioned conventional example, since the thermal fuse is not temporarily fixed to the bottom surface of the container, it is difficult to attach the flat plate on which the leaf spring is fixed because the holes of the parts do not align with each other, and the temperature fuse is not attached properly. There were problems such as accidental melting.

[0004]

[Means for Solving the Problems]

 The present invention has been made to solve the above problems, and has a bottomed cylindrical container provided inside the main body, a heating element for heating the liquid in the container, and a flat plate for fixing the heating element to the bottom surface of the container. A thermal fuse that melts at a predetermined temperature, a thermal conductive member that fixes the thermal fuse and conducts heat, a leaf spring that presses the thermal conductive member against the bottom of the container, and another flat plate on which the leaf spring is fixed. In the electric water heater equipped with, the flat plate is provided with a claw portion and the heat conducting member is provided with a mounting hole, and the mounting hole of the heat conducting member is passed through the claw portion of the flat plate to transform the claw portion to form a temperature fuse. Is temporarily fixed, and then the heat conduction member is pressed and fixed to the bottom surface of the container by a leaf spring fixed to another flat plate.

[0005]

[Action]

 With the above configuration, the flat plate is provided with the claw portion, and the heat conducting member is provided with the mounting hole.The heat conducting member mounting hole is passed through the claw portion of the flat plate, and the claw portion is deformed by, for example, deforming the temperature. The fuse is temporarily fixed, and the leaf spring fixed to another flat plate presses and fixes the heat transfer member to the bottom of the container. It can be pressed against the container and the work of mounting the thermal fuse becomes easy and it can be mounted securely.

[0006]

【Example】

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

In the figure, reference numeral 1 designates a bottomed cylindrical container provided inside the main body, in which a bottom surface is provided with a recess 1a for containing a liquid 8 such as water therein. Reference numeral 2 denotes a disc-shaped heating element, which is pressed and fixed in the concave portion 1a of the container 1 for heating the liquid 8 in the container 1. Reference numeral 3 is a disk-shaped flat plate having a claw portion 3a on the upper surface thereof, and the heating element 2 is pressed and fixed to the bottom surface of the container 1. Reference numeral 4 is a thermal fuse that melts at a predetermined temperature. Reference numeral 5 is a heat conducting member. A temperature fuse 4 is fixed to one end of the thermal fuse and has a mounting hole 5a in the central portion thereof so as to immediately stop energization of the heating element 2 during abnormal heating. It is fixed to the bottom surface of the container 1 and transfers the high temperature heat of the container 1 to the thermal fuse 4. Reference numeral 6 denotes a leaf spring, and the heat conducting member 5 to which the thermal fuse 4 is fixed is pressed and fixed to the bottom surface of the container 1. Reference numeral 7 is a disk-shaped flat plate having a locking portion 7a and having a leaf spring 6 fixed thereto.

Next, the operation of this embodiment having the above configuration will be described.

First, the heating element 2 is mounted in the recess 1 a on the bottom surface of the container 1, the flat plate 3 is welded to the bottom surface of the container 1 from above, and the heating element 2 is pressed and fixed to the bottom surface of the container 1. Next, after the mounting hole 5a of the thermoelectric conductive member 5 to which the temperature fuse 4 is fixed is passed through the claw portion 3a of the flat plate 3, the claw portion 3a is deformed to temporarily fix the thermal fuse 4. Then, one end of the leaf spring 6 is locked to the locking portion 7a of the flat plate 7, and the other end side is fixed with a screw. Finally, the flat plate 7 is fixed to the container 1 via the flat plate 3 with screws, and the temperature fuse 4 is pressed and fixed to the bottom surface of the container 1 by the plate spring 6 fixed to the flat plate 7.

Therefore, since the thermal fuse 4 is temporarily fixed in advance by deforming the claw portion 3a of the flat plate 3 that has passed through the mounting hole 5a of the heat conducting member 5, the flat plate 7 to which the plate spring 6 is fixed is stored in the container. When it is fixed to 1, it is not necessary to fix the thermal fuse 4 to the container 1 by hand, and it can be easily and surely attached.

[0011]

[Effect of device]

 As described above, since the thermal fuse is temporarily fixed by the mounting hole of the heat conducting member and the claw portion of the flat plate, the work of mounting the flat plate to which the leaf spring is fixed later becomes easy and the defective mounting of the thermal fuse is eliminated.

Therefore, it is possible to provide a highly reliable electric water heater in which the thermal fuse is not accidentally blown.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of an electric water heater showing an embodiment of the present invention.

FIG. 2 is likewise an assembly exploded view of a main part.

FIG. 3 is a view showing the mounting structure of the thermal fuse.

[Explanation of symbols]

 1 Container 2 Heating Element 3 Flat Plate 3a Claw 4 Thermal Fuse 5 Thermal Conductive Member 5a Mounting Hole 6 Leaf Spring 7 Flat Plate

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Creator Koji Yamauchi 1-3, Shinjuyo, Kashiwa-shi, Chiba 1

Claims (1)

[Scope of utility model registration request] 1. A bottomed cylindrical container (1) provided inside a main body.
A heating element (2) for heating the liquid in the container (1), and a flat plate (3) for fixing the heating element (2) to the bottom surface of the container (1).
A thermal fuse (4) that melts at a predetermined temperature, a thermal conduction member (5) that fixes the thermal fuse (4) and conducts heat to the thermal fuse (4), and a thermal conduction member (5) in a container ( 1) A leaf spring (6) pressed against the bottom surface, and a leaf spring (6)
In an electric water heater equipped with a flat plate (7) to which is fixed, the flat plate (3) is provided with a claw portion (3a), and the heat conducting member (5) is provided with a mounting hole (5a). The mounting hole (5a) of the member (5) is passed through the claw (3a) of the flat plate (3), the claw (3a) is deformed to temporarily fix the temperature fuse (4), and then the flat plate (7) is fixed. An electric water heater characterized in that the heat conduction member (5) is pressed and fixed to the bottom surface of the container (1) by the fixed leaf spring (6).