JPH08173318A - Water-proof electric water heater - Google Patents

Abstract

PURPOSE: To prevent water from penetrating into the main body of a water heater from the outside by sealing all gaps which pass through the inside and are formed between the outside components of a water heater using sealing means such as O-rings and packings. CONSTITUTION: A sealing plate 27 which seals an opening 26 of a bottom 29 of a sheath 25 is fitted through an O-ring 33, and a plug socket 5 inserted into the side of the bottom 29 is fitted and sealed through an O-ring 34. The sealing plate 27 is screwed into a screw socket 36 which is integral with the sheath 25 with a screw 35 and the neck of the sealing plate 27 is fitted with a packing 37. The top edge of the sheath 25 is engaged with an engaging groove provided at a shoulder 7 and a bill 9, and an O-ring is fitted to the dent portion of the inner peripheral surface of the fitted portion to seal the part between the sheath 25 and the shoulder 7. An O-ring is fitted between the outer peripheral surface of a discharge port 10 and the hole at a closed portion 31 of the bill 9 to seal them. An elastic sticker 47 is pasted on the outer surfaces of an operation button 13 and display light 14 exposed at the bill 9 surface to achieve the sealing of both.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a waterproof electric water heater.

[0002]

2. Description of the Related Art A conventional electric water heater comprises, as shown in FIG. 4, a water heater body 1 and a lid set 2 which is attached to an upper end opening of the water heater so as to be openable and closable.

The following are external components of the water heater body 1 described above. That is, the body 3, the bottom 4 fitted to the lower end of the body 3, the plug receiver 5 exposed on the side surface of the bottom 4, the bottom 4
Support 6 for supporting the lower surface of the body 3, a shoulder 7 fitted to the upper end of the body 3, a handle 8 attached to the shoulder 7, an under cover 11 for covering between the lower surface of the beak portion 9 of the shoulder 7 and the body 3. , A discharge port 10 facing a hole 12 provided in the under cover 11, various operation buttons 13 exposed on the surface of the beak portion 9, an indicator light 14, and a water level gauge (not shown) provided on the front surface of the body 3 and the like. Is. The handle 8 is rotatably mounted in a mounting hole 15 formed in the shoulder 7.

The main constituent members of the main body 1 other than the above-mentioned appearance constituent members are the inner container 16 fitted to the inner circumference of the opening of the shoulder 7, and the inner container 16 mounted on the bottom surface of the inner container 16. A heater 17, a discharge pump 19 connected to a discharge port 18 on the bottom surface of the inner container 16, a discharge pipe 21 connected to the discharge pump 19, an operation control unit 24 mounted inside the beak portion 9, and inside the bottom 4. An installed water heating control unit (not shown) or the like.

[0005]

The conventional electric water heater having the above-described structure has sufficient water leakage between the respective constituent members from the inner container 16 which comes into direct contact with water to the discharge port 10. Although the seals were provided, the above-mentioned exterior constituent members were not particularly provided with a seal.
For this reason, if the main body 1 is leaked into water or immersed in water, there is a risk that water will enter the inside of the main body 1 through the gaps between the external components, which may interfere with internal electrical components and the like.

Therefore, the present invention has an object to prevent water from entering the inside of the main body from the outside.

[0007]

To achieve the above object, the present invention provides a waterproof electric water heater comprising a water heater main body and a lid set which is openably and closably attached to an upper end opening of the water heater. A gap is formed between the external components and communicates with the inside of the main body by a sealing means.

It should be noted that a mounting wall of the handle constituting the external component is provided outside the external component, and a rotary shaft of the handle is rotatably fitted in a mounting hole provided in the mounting wall. You can

[0009]

In the electric water heater having the above-mentioned structure, there is no gap between the external appearance members that communicates with the inside of the main body, so that even if the electric water heater is wetted or soaked in water, the water does not enter the inside of the main body. .

Further, as the mounting structure of the handle, if the mounting wall is provided outside the exterior constituting member as described above, the mounting hole provided in the mounting wall is isolated from the inside of the main body, and therefore from this portion to the main body. Water does not get inside.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The electric water heater shown in FIG. 1 comprises a combination of a water heater body 1 and a lid set 2 as in the conventional case.

The exterior component of the water heater main body 1 is an exterior body 25 and a hole 26 provided in the bottom surface of the exterior body 25 (the hole 26 is provided for performing wiring work of electric parts mounted inside the bottom). .) Closing plate 27, plug receiver 5, shoulder 7 fitted to the upper end of the outer body 25, undercover 11 covering the lower surface of the beak portion 9 of the shoulder 7, handle 8 attached to the shoulder 7, outer body. For example, a water level gauge (not shown) provided on the front surface of 25.

The outer casing 25 has a body portion 28 and a bottom portion 29.
And the beak block 31 is integrally molded,
The upper end of the body 28 and the upper end of the beak block 31 are formed at the same height.

The discharge port 1 is provided in the beak block 31.
A hole 32 is provided to expose 0 to the outside.

Further, as shown in FIG.
The closing plate 27 that closes the hole 26 is fitted through the O-ring 33, and the plug receivers 5 inserted into the side surfaces of the bottom 29 are also fitted through the O-ring 34 to achieve sealing. .

The closing plate 27 is fastened by a screw 35 to a screw receiver 36 which is integral with the outer casing 25, and a packing 37 is interposed at the neck portion of the screw 35.

The upper edge of the outer casing 25 is fitted into the fitting grooves 38 and 39 (see FIGS. 3A and 3B) provided in the shoulder 7 and the beak portion 9, and the inner circumference of the fitting portion. Surface recess 4
The O-ring 42 is attached to 1, 41 ', and the exterior body 25 and the shoulder 7 are attached.
I am trying to make a seal between and.

Further, as shown in FIG. 3 (a), the discharge port 1
An O-ring 43 is interposed between the outer peripheral surface of No. 0 and the hole 32 of the beak portion closing portion 31 to achieve sealing at this portion. The inner peripheral surface of the discharge port 10 is subjected to a water repellent treatment so that water droplets are unlikely to adhere to it, thereby facilitating water drainage. This water-repellent treatment is performed by kneading a highly water-repellent material into the ejection port member and then molding or applying a water-repellent material after molding.

No seal is provided between the undercover 11 and the beak portion 9 or between the undercover 11 and the body portion 28 of the outer casing 25, but this is the beak portion that is inside the undercover 11. There is a blockage 31,
This is because this portion is sealed to the beak portion 9 as described above.

Further, the handle 8 is attached to a part of the shoulder 7, and at the attaching portion, as shown in FIGS. 3 (b) and 3 (c), the attaching wall 44 protruding to the outside of the shoulder 7 is attached to the shoulder 7. It is provided at two locations symmetrical to the center of the
Is provided with a mounting hole 45. Rotating shafts 4 at both ends of handle 8
6 is rotatably fitted in each of the above mounting holes 45.

The above mounting hole 45 is provided in the water heater body 1
Since it does not communicate with the inside of the housing, even if water is splashed in the vicinity of the mounting hole 45, it will not penetrate into the inside.

A flexible sheet 47 is attached to the outer surface of the operation button 13 and the indicator lamp 14 exposed on the surface of the beak portion 9 to provide a sticker.

In addition, the water level gauge (not shown) provided on the front surface of the body portion 28 of the outer casing 25 is sealed by attaching a sheet to the front surface and the surrounding portion of the outer casing 25. .

[0024]

As described above, according to the present invention, all the gaps between the outer appearance components of the water heater main body which are communicated with the inside of the main body are sealed, so that even if the main body is wet or immersed in water, Water can be prevented from entering. Therefore, the main body can be sufficiently washed.

According to the second aspect of the present invention, it is possible to prevent water from entering from the mounting portion of the handle without using a seal member.

[Brief description of drawings]

FIG. 1 is a partially omitted sectional view of an embodiment.

FIG. 2 is a partially omitted exploded perspective view of the above.

FIG. 3A is an enlarged cross-sectional view of a discharge port portion of the above, FIG. 3B is an enlarged cross-sectional view of a handle attachment portion of the above, and FIG.

FIG. 4 is a partially omitted cross-sectional view of a conventional example.

[Explanation of symbols]

 1 Water Heater Main Body 2 Lid Set 3 Body 4 Bottom 5 Plug Receiver 6 Support 7 Shoulder 8 Handle 9 Beak 10 Discharge Port 11 Undercover 12 Hole 13 Operation Button 14 Indicator Light 15 Mounting Hole 16 Inner Container 17 Heater 18 Discharge Port 19 Discharge Pump 21 Discharge pipe 24 Operation control unit 25 Exterior body 26 Hole 27 Closing plate 28 Body part 29 Bottom part 31 Beak part blocking part 32 hole 33 O ring 34 O ring 35 Screw 36 Screw receiver 37 Packing 38, 39 Fitting groove 41, 41 'Recess 42, 43 O-ring 44 Mounting wall 45 Mounting hole 47 Sheet

Claims (2)

[Claims] 1. A waterproof electric water heater comprising a water heater body and a lid set attached to the upper end opening of the water heater so as to be openable and closable. A waterproof electric water heater characterized by being fully closed by means. 2. A mounting wall of a handle constituting the exterior constituting member is provided outside the exterior constituting member, and a rotary shaft of the handle is rotatably fitted in a mounting hole provided in the mounting wall. The waterproof electric water heater according to claim 1.