JP2009291533A - Electric water heater - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electric water heater allowing drying by inverting the pot after washing by preventing damage of an operation substrate caused by a liquid which flows from a slit of a discharge part or the side face of the inner pot and which enters a recess from a lead-out port of lead wire. <P>SOLUTION: The electric water heater 11 includes a body 12, the inner pot 17 provided inside the body 12 for storing the liquid, a shoulder body 18 provided on the upper opening rim of the inner pot 17 and a pumping pipe 26 extending to the discharge part 24 which discharges the liquid from the bottom part of the inner pot 17 through a valve member 23. The lead wire 34 extends from the operation substrate 31 arranged in the recess 28 of the shoulder body 18. The lead wire 34 is led out of the lead-out port 36 provided on the bottom face 28a of the recess 28. Ribs 38 and 42 are provided on the back face of the shoulder body 18 so as to surround the lead-out port 36. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an electric water heater.

  2. Description of the Related Art Conventionally, an electric water heater has been proposed in which an operation board accommodated in a casing is disposed from a back side of a shoulder body in a recess opened at the lower side of the shoulder body.

  However, after the electric water heater is washed and turned over to dry, the liquid flowing from the slit of the discharge part and the side of the inner container from the outlet formed in the casing to take out the lead wire connected to the operation board However, there is a problem that the operation board is damaged by being immersed in the casing.

  In view of this, an electric water heater has been proposed in which an operation substrate and a frame body are arranged in this order from the front side of the shoulder body into a recess opened above the shoulder body to cover the operation panel.

  In this electric water heater, when inverted, the liquid flowing from the slit of the discharge part and the side surface of the inner container is submerged in the concave part from the outlet for taking out the lead wire from the concave part of the shoulder body. There was a problem of damaging the substrate.

  The present invention has been made in view of the above-described conventional problems, and the liquid flowing from the slit of the discharge unit or the side surface of the inner container is removed from the lead wire even if it is turned over for drying after washing. It is an object of the present invention to provide an electric water heater that can prevent the operation substrate from being damaged by being immersed in the recess.

  As means for solving the above problems, an electric water heater according to the present invention includes a main body, an inner container that is provided in the main body and contains a liquid, and a shoulder body that is provided at an upper end opening edge of the inner container, A pump pipe extending from the bottom of the inner container to the discharge part for discharging the liquid through a valve member, and a lead wire extending from the operation board disposed in the recess of the shoulder body is provided on the bottom surface of the recess. In the electric water heater to be taken out from the provided outlet, a rib surrounding the outlet is provided on the back surface of the shoulder body.

  By providing a rib that surrounds the outlet, even if the electric water heater is turned upside down, even if the liquid flows from the slit of the discharge part or the side of the inner container, the liquid is immersed in the recess from the outlet and operated. It is possible to prevent the substrate from being damaged.

  As a specific means, the rib is provided between the outlet and the discharge part, and the liquid leaking from the slit of the discharge part flows into the outlet while the water heater is inverted. A first rib for preventing this, and a second rib provided between the outlet and the inner container for preventing liquid transmitted from the inner container from flowing into the outlet when the water heater is turned upside down And are preferably provided.

  By providing the first rib, it is possible to prevent the liquid leaking from the slit of the discharge portion from flowing into the recess from the outlet when the water heater is inverted. By providing the second rib, it is possible to prevent the liquid transmitted from the inner container from flowing into the recess from the outlet when the water heater is inverted. As described above, even if the water heater is turned upside down, the liquid can be prevented from flowing into the recess from the outlet, and the operation substrate can be prevented from being damaged.

  It is preferable that a first notch is provided between the first rib and the second rib, and a second notch for inserting the lead wire is provided at an end of the second rib.

  By providing the first notch portion between the first rib and the second rib, when the water heater is turned upside down, the liquid transmitted from the inner container flows out from the second notch portion, Even if it collects between the first rib surrounding the outlet, it can be drained from the first notch to the outside of the first rib.

  The first rib is preferably higher than the standing wall of the outlet, and the standing wall is preferably higher than the bottom of the first notch.

  Since the first rib is higher than the standing wall of the outlet, liquid can be effectively prevented from entering the outlet. Since the standing wall is higher than the bottom of the first notch, the liquid can be drained to the outside of the first rib even if the liquid accumulates between the outlet and the first rib.

  It is preferable to further include waterproof means that engages with the standing wall of the outlet and covers the outlet.

  Since the waterproof means engages with the standing wall of the outlet and covers the outlet, even if the liquid is submerged from the first rib and reaches the outlet, it can be prevented from entering the recess from the outlet.

  It is preferable that the valve member having the discharge part is installed with a gap with the waterproof means, and the gap is shorter than the standing wall of the outlet.

  Since the gap between the valve member and the waterproof means is shorter than the standing wall of the outlet, the waterproof means is fixed by the valve member without detaching from the outlet.

  It is preferable that waterproof means that engages with the standing wall of the outlet and covers the outlet is formed integrally with the valve member having the discharge portion.

  By integrally forming the waterproof means on the valve member, the manufacturing cost can be reduced as compared with the case where the waterproof means is formed as a separate part.

  According to the present invention, since the rib surrounding the outlet is provided, even when the electric water heater is turned upside down, even if the liquid flows from the slit of the discharge portion or the side surface of the inner container, the liquid is discharged from the outlet into the recess. It is possible to prevent the operation substrate from being damaged by being immersed in the water.

  Next, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

  1 and 2 show an electric water heater 11 according to an embodiment of the present invention. This electric water heater 11 is a well-known one comprising a main body 12 and a lid body 14 attached to the upper portion of the main body 12 so as to be rotatable around a hinge shaft 13 (see FIG. 2). In the following description, the water injection side is described as the front, and the opposite side is described as the rear.

  The main body 12 includes a body 16 and a shoulder body 18 which is disposed inside the body 16 and is provided at an upper end opening edge of the inner container 17 for storing liquid. On the bottom of the inner container 17, a heater 19 and a heat retaining heater 21 as heating means are disposed. A hot water supply pump 22 as hot water supply means is disposed between the body 16 and the inner container 17.

  A nose portion 16a protruding forward is formed on the upper portion of the body 16, and a discharge portion 24 of the valve member 23 is disposed so as to protrude from the lower surface of the nose portion 16a. A pumping pipe 26 made of a transparent material such as resin or glass that communicates with the hot water supply pump 22 is connected to the valve member 23. In the body 16, a transparent resin cover that constitutes the see-through window 27 is disposed in front of the pumping pipe 26.

  As shown in FIG. 3, the shoulder 18 that covers the top of the nose portion 16a has a recess 28 that opens upward. An operation board 31 on which an electric circuit, a microcomputer or the like is mounted is installed in the recess 28, and an operation panel 33 is disposed on the operation board 31 via a frame body 32. On the bottom surface 28 a of the recess 28, an outlet 36 for taking out the lead wire 34 connected to the operation board 31 is formed. The outlet 36 is provided with a standing wall 37 (see FIG. 7A) on the periphery of the back surface.

  Referring to FIG. 4, a first rib 38 between the take-out port 36 and the discharge portion 24 and a frame 39 of the shoulder body 18 are provided so as to surround the front and side surfaces of the take-out port 36. As shown in FIG. 7A, the first rib 38 is higher by S <b> 1 than the standing wall 37 of the outlet 36. Further, a first notch 41 is provided behind the first rib 38, and the standing wall 37 is S 2 higher than the bottom of the first notch 41. A second rib 42 extending downward is provided between the outlet 36 and the inner container 17, and a second cutout portion 43 through which the lead wire 34 is inserted is formed in the second rib 42. .

  Referring to FIG. 5, a sealing member 44 that is waterproof means is fixed so as to engage with the standing wall 37 and cover the outlet 36 from below. The seal member 44 includes an engaging portion 46 that engages with the standing wall 37, and a fixing portion 48 that extends outward from the engaging portion 46 and has a hole 47. An insertion port 49 through which the lead wire 34 is inserted is formed on the side surface of the engaging portion 46. The seal member 44 is fixed to the seal member mounting leg 51 of the shoulder body 18 via a screw (not shown) that passes through the hole 47.

  With reference to FIGS. 6 and 7B, the valve member 23 having the discharge portion 24 is fixed to the lower side of the seal member 44. The valve member 23 has a connection part 52 connected to the pumping pipe 26, and has a known shape that prevents liquid in the inner container 17 from passing through the pumping pipe 26 and discharging the liquid from the discharge part 24 when it falls down. is there. The valve member 23 is fixed to the valve member mounting leg 54 of the shoulder body 18 with a distance S3 from the lower surface of the seal member 44 via a screw (not shown) that passes through the hole 53. The discharge part 24 provided in front of the valve member 23 extends downward, and a slit 57 extending in the vertical direction is formed in the peripheral wall 56. The slit 57 reduces the suction force in order to prevent hot water from being sucked out and causing burns when a child accidentally sucks the discharge portion 24.

  Next, the operation of the electric water heater 11 having the above configuration will be described.

  First, when the lid 14 is opened and liquid is poured into the inner container 17 and the power is turned on, the liquid is heated by the heater 19 and the heat retaining heater 21 and is kept at a predetermined temperature when boiling. Further, when the hot water supply switch 35 a is pressed, the hot water supply pump 22 is driven, and the liquid in the inner container 17 that has been boiled or kept warm is discharged from the discharge portion 24 through the pumping pipe 26 and the valve member 23.

  When the electric water heater 11 is washed and then turned upside down for drying, the liquid in the valve member 23 leaks from the lower end portion 58 of the slit 57 of the discharge portion 24 in the A direction or the B direction (see FIG. 4). However, by providing the first rib 38, the liquid can be prevented from flowing into the recess 28 from the outlet 36.

  Further, when the electric water heater 11 is washed and then turned upside down, the liquid submerged from the screw hole (not shown) at the bottom of the main body 12 is transmitted to the side surface of the inner container 17 in the direction E (see FIG. 7), and the back surface of the shoulder body 18. Flows in the C direction (see FIG. 4). However, by providing the second rib 42, it is possible to prevent the liquid transmitted from the inner container 17 from flowing into the recess 28 from the outlet 36. Accordingly, even if the electric water heater 11 is turned upside down, the liquid can be prevented from flowing into the recess 28 and the operation substrate 31 can be prevented from being damaged.

  Further, by providing the first notch portion 41 between the first rib 38 and the second rib 42, the liquid transmitted from the inner container 17 is transferred from the second notch portion 43 when the water heater 11 is inverted. Even if it flows out and accumulates between the outlet 36 and the first rib 38 surrounding the outlet 36, it can be drained from the first notch 41 to the outside of the first rib 38.

  Since the first rib 38 is higher than the standing wall 37 of the take-out port 36, water can be effectively prevented from entering the take-out port 36. In addition, since the standing wall 37 is higher than the bottom of the first notch 41, even if liquid accumulates between the first rib 38 and the outlet 36, the liquid can be drained to the outside of the first rib 38.

  Since the sealing member 44 engages with the upright wall 37 of the outlet 36 to cover the outlet 36, even if the liquid is submerged from the first rib 38 and reaches the outlet 36, the water is immersed in the recess 28 from the outlet 36. Can be prevented

  Since the gap S <b> 3 between the valve member 23 and the seal member 44 is shorter than the standing wall 37 of the outlet 36, the seal member 44 is fixed without being detached from the outlet 36 by the valve member 23.

  By integrally molding the seal member 44 with the valve member 23, the manufacturing cost can be reduced as compared with the case where the seal member 44 is formed as a separate part.

  In addition, the electric water heater 11 of this invention is not limited to the said embodiment, A various deformation | transformation is possible.

  The shape of the first rib 38 is not particularly limited as long as the liquid leaking from the slit 57 of the discharge unit 24 can be prevented from flowing into the outlet 36 when the electric water heater 11 is inverted.

  The shape of the second rib 42 is not particularly limited as long as the liquid transmitted from the inner container 17 can be prevented from flowing into the outlet 36 when the electric water heater 11 is inverted.

The perspective view of the electric water heater which concerns on embodiment of this invention. The fragmentary sectional view of the electric water heater of FIG. FIG. 2 is an exploded perspective view of an operation board, a frame, and an operation panel disposed in a shoulder recess of the electric water heater in FIG. 1. The back view which looked at the shoulder body of FIG. 3 from the back surface. The back view which has arrange | positioned the sealing member to the shoulder body of FIG. The back view which has arrange | positioned the valve member to the shoulder body of FIG. (A) is a partial expanded sectional view along the DD line in the state which removed the valve member and the sealing member from the shoulder body of FIG. 6, (b) is an expanded sectional view along the DD line of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 Electric water heater 12 Main body 17 Inner container 18 Shoulder body 23 Valve member 24 Discharge part 26 Pumping pipe 28 Recessed part 28a Bottom 31 Operation board 34 Lead wire 36 Outlet 37 Standing wall 38 1st rib 41 1st notch part 42 2nd rib 43 Second notch 44 Seal member (waterproofing means)
57 slit

Claims (7)

A main body, an inner container provided in the main body for containing liquid, a shoulder body provided at an upper end opening edge of the inner container, and a discharge for discharging the liquid from a bottom portion of the inner container via a valve member An electric water heater that takes out a lead wire extending from an operation board disposed in a recess of the shoulder body from an outlet provided in a bottom surface of the recess,
An electric water heater, wherein a rib surrounding the outlet is provided on the back surface of the shoulder body. The rib is
A first rib which is provided between the outlet and the discharge part and prevents the liquid leaking from the slit of the discharge part from flowing into the outlet in a state where the water heater is inverted;
A second rib that is provided between the outlet and the inner container and prevents the liquid transmitted from the inner container from flowing into the outlet while the water heater is turned upside down;
The electric water heater according to claim 1, further comprising:   The first notch is provided between the first rib and the second rib, and a second notch for inserting the lead wire is provided at an end of the second rib. Item 3. An electric water heater according to Item 1 or 2.   The electric water heater according to any one of claims 1 to 3, wherein the first rib is higher than a standing wall of the outlet, and the standing wall is higher than a bottom of the first notch.   The electric water heater according to any one of claims 1 to 4, further comprising waterproof means that engages with a standing wall of the outlet and covers the outlet.   The electric water heater according to any one of claims 1 to 5, wherein the valve member having the discharge portion is installed with a gap with the waterproof means, and the gap is shorter than a standing wall of the outlet.   The electric water heater according to any one of claims 1 to 4, wherein waterproof means that engages with a standing wall of the outlet and covers the outlet is formed integrally with a valve member having the discharge portion.

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