JP2563507B2 - Electric water heater with turntable - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an electric water heater used in ordinary households.

2. Description of the Related Art A conventional electric water heater of this type is a disk-shaped cover that covers the lower end opening of the body and is fixed to the cover with a plurality of screws as components for rotating the body. Support frame, a rotary base receiver located below the cover and rotatably fitted to the support frame, and fixed to the rotary base receiver by a plurality of screws, and the rotary base receiver And a turntable that covers the support frame.

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention However, such a conventional configuration requires a large number of components as components for rotating the body, and also requires a plurality of screws for fixing each component. Therefore, there is a problem that the number of assembling steps is increased and the dimensional accuracy between the parts is required, resulting in an increase in cost.

The present invention has been made in order to solve such a problem, and provides an electric water heater which can be easily assembled by reducing the number of constituent parts for rotating the body and the number of assembling screws. The first purpose is to provide.

A second object of the present invention is to reliably prevent the microcomputer or the like therein from malfunctioning even if water enters the hot water temperature control device at the time of cleaning, by letting it escape immediately. .

Means for Solving the Problems In order to achieve the first object, the present invention provides a plurality of projections that fit into a ring-shaped groove provided on the lower surface near the outer periphery of a cover fixed to the lower end of a container. A substantially plate-shaped turntable provided on the upper surface is rotatably screwed to a boss that is located substantially at the center of the cover and projects downward.

In order to achieve the second object, the present invention provides a through hole at one end of a disk portion of a substantially disk-shaped cover, which is sufficient to take out a lead wire of a hot water temperature control device, and a plate. A hole for draining dew condensation water etc. that naturally occurs inside is provided in the dish part of the rotary table, and a compartment is provided by these disc part and dish part, and the lead wire of the hot water temperature control device is provided in this compartment. It is arranged.

Operation According to the above configuration, since the substantially dish-shaped rotary table is rotatably screwed to the boss located at the substantially central portion of the cover and projecting downward, the conventional rotary table receiver becomes unnecessary. At the same time, the supporting frame for rotatably fitting the rotary base receiver can be omitted. As a result, the number of components for rotating the body can be extremely small, and the number of assembling steps can be significantly reduced. It can be obtained at low cost.

In addition, a part of the disk part of the approximately disk-shaped cover is provided with a minimum through hole for taking out the lead wire of the hot water temperature control device, and the disk part of the approximately plate-shaped turntable naturally occurs inside. There is a hole for draining dew condensation water, etc., and a compartment is provided by these disc part and dish part, and the lead wire of the hot water temperature control device is arranged in this compartment, so the electric water heater is washed with water. Even when cleaning with, water does not enter the hot water temperature control device due to the double protection structure of the disk part of the cover and the plate part of the rotating table, and even if water does enter, it can be quickly released. Therefore, the microcomputer in the hot water temperature control device can be surely prevented from malfunctioning.

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

In FIGS. 1 and 2, reference numeral 1 denotes a cylindrical container formed of a thin plate such as stainless steel, and the container 1 is hung and supported in a cylindrical container 2 as well. In addition, a concentric stepped projecting portion is formed on the bottom of the container 1, and a donut-shaped flat heater 3 is provided in the middle thereof by a pressing metal fitting 3a, and the pressing metal fitting 3a is provided in the vicinity of the outer periphery thereof. Located on the outer surface of the bottom of the container 1 and is a U-shaped container support plate 4
A plurality of are attached. Reference numeral 5 is a substantially disk-shaped cover that covers the lower end opening of the container body 2. This cover 5 has a disk-shaped holding plate 7 fitted in a ring-shaped portion 6 formed to project on the lower surface, A substantially disk-shaped cover 5 together with a plate-shaped holding plate 7
The container 1 is fixed to the container support plate 4 with a screw 8 by pulling the container 1 downward. A hot water temperature controller 10 is provided in a space 9 substantially at the center between the cover 5 and the bottom of the container 1. Further, a ring-shaped groove 11 is provided downward on the lower surface near the outer periphery of the cover 5, and a plurality of protrusions 13 provided on the upper surface of the substantially pan-shaped rotary table 12 are provided in the ring-shaped groove 11. Are fitted.

A boss 14 projecting downward is integrally formed substantially at the center of the disk portion 5a of the cover 5, and a part of the dish portion 12a of the rotary table 12 is fitted to the boss 14 and rotated by a screw 15. It is installed freely. As a result, the rotary table 12 does not come off from the cover 5, and the load of the electric water heater is received by the projection 13 via the ring-shaped groove 11. In addition, by providing a corrugated circular washer 16,
The turning force of the cover 5 with respect to 12 is properly maintained, and the gap between the two is well constructed.

A space is formed between the plate portion 12a of the rotary table 12 and the disc portion 5a of the cover 5, and a compartment 17 is formed between them.
A terminal block 18 is fixed by screws 19 to a part of the outer periphery of the rotary table 12 located in the compartment 17. Also terminal block
The terminal 18 has a terminal rod 20 located outside of the body 2 and a terminal plate 21 located inside thereof.
Are electrically coupled.

On the other hand, the plurality of lead wires 22 coming out of the hot water temperature control device 10 are taken out downward through a through hole 23 provided in a part of the disk portion 5a of the cover 5. The through hole 23 has a minimum size necessary for wiring the lead wire 22. The lead wire 22 is a terminal board through another lead wire 22 connected to the connector 24.
It is connected to 21 with screws 25. The connector 24 is the second
It is held by a guide 26 as shown.

By connecting the lead wire 22 with the connector 24 in this manner, the screw 8 may be tightened with the lead wire 22 taken out from the cover 5 at the time of assembly.
The body of the electric water heater can be easily and firmly assembled. In addition, since the lead wires 22 are short distances that connect the connector 24 and the terminal board 21 whose positions are fixed,
The length accuracy is also well determined, and as a result, the bending degree of the lead wire 22 can be made into a shape convenient for bending as shown in FIG. Also, the assembly becomes easy.

The boss 14 also serves as a guide for bending the lead wire 22, which eliminates the need for an extra pin or the like, thus further simplifying the configuration. Reference numeral 27 denotes a guide pin when rotating in the reverse direction, which is provided on the disc portion 5a of the cover 5.

Further, a plurality of pores 28 are provided in a part of the outer periphery of the dish portion 12a of the rotary table 12, and the dew condensation water or the like generated in the space inside the electric water heater is exposed from the pores 28 to the outside. Can be discharged to. Reference numerals 29 and 30 denote rings provided so as to oppose and overlap the disk portion 5a and the dish portion 12a, respectively, and the through holes 23 are located inside these rings 29 and 30, and the terminal block 18 Is located outside. Further, these rings 29, 30 serve as guide guides for bending the lead wire 22 when the cover 5 rotates, so that the lead wire 22 can be prevented from being caught or entangled. is there.

When assembling the lead wire 22, one of the lead wires 22 is first connected to the connector 24, and the connector 24
In the guide 26. Then, the other lead wire 22 is connected to the terminal block 18 which is temporarily locked in the recess 31 of the disc portion 5a. Next, the terminal block 18 is moved to fix the terminal block 18 to the predetermined position of the rotary table 12 with the screw 14. With such a configuration, the connector 24 may be removed at the time of disassembly or the like, and repair can be performed separately from the internal hot water temperature control device 10 and the like.

EFFECTS OF THE INVENTION As is clear from the description of the above embodiments, the electric water heater with a turntable of the present invention has a plurality of fittings with a ring-shaped groove provided on the lower surface near the outer periphery of the cover fixed to the lower end of the container. Since a substantially dish-shaped turntable having a protrusion of the above shape is rotatably screwed to a boss which is located at substantially the center of the cover and protrudes downward, a conventional turntable receiver is not necessary. The supporting frame for rotatably fitting the rotary table receiver can be omitted, and as a result, the number of components for rotating the body can be extremely small, and the number of assembling steps can be significantly reduced. It can be obtained at low cost.

Further, since the boss also functions as a guide when the lead wire of the hot water temperature control device is bent, the structure thereof is further simplified.

In addition, a part of the disk part of the substantially disk-shaped cover is provided with a minimum through hole for taking out the lead wire of the hot water temperature control device, and the disk part of the plate-shaped rotary table naturally occurs inside. There is a hole for draining dew condensation water, etc., and a compartment is provided by these disc part and dish part, and the lead wire of the hot water temperature control device is arranged in this compartment, so the electric water heater is washed with water. Even when cleaning with, water does not enter the hot water temperature control device due to the double protection structure of the disc part of the cover and the dish part of the rotating plate, and even if water does enter, it can be quickly released. Therefore, the microcomputer in the hot water temperature control device can be surely prevented from malfunctioning.

[Brief description of drawings]

FIG. 1 is a sectional view of an essential part of an electric water heater with a turntable showing an embodiment of the present invention, and FIG. 2 is a bottom view of the essential part of the electric water heater. 1 ... Container, 2 ... Container, 4 ... Container support plate, 5 ... Cover, 5a ... Disc part, 10 ... Hot water temperature control device, 11 ... Ring groove, 12 ... Rotation Table, 12a ... Plate part, 13 ... Protrusion, 1
4 ... Boss, 17 ... compartment, 22 ... lead wire, 23 ... through hole, 28 ... pore.

Front page continuation (72) Inventor Takayo Mori Takashi Kadoma 1006 Kadoma, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (72) Inventor Katsuro Okada 1006 Kadoma, Kadoma City, Osaka Matsushita Electric Industrial Co., Ltd.

Claims (2)

(57) [Claims] 1. A hot water temperature control device is provided in a space below a container suspended and supported in a cylindrical container, and a substantially disk-shaped cover for supporting and covering the hot water temperature control device is provided in the container. A substantially plate-shaped turntable having a plurality of protrusions fixed to the lower end of the body by a container support plate provided on the lower surface and fitted on a ring-shaped groove provided on the lower surface near the outer periphery of the cover on the upper surface. Is rotatably screwed to a boss that is located substantially at the center of the cover and protrudes downward, and a part of the cover is further penetrated to take out the lead wire of the hot water temperature control device downward. An electric water heater with a turntable in which a wire is bent around the outer periphery of the boss. 2. A minimum disc through hole for taking out the lead wire of the hot water temperature control device is provided in a part of the disc portion of the disc-shaped cover, and the disc portion of the disc-shaped rotary table is provided. 2. A hole for draining dew condensation water or the like that naturally occurs inside is provided, a compartment is provided by these disc portion and the dish portion, and the lead wire of the hot water temperature control device is arranged in this compartment. Electric water heater with a turntable.