JP2011135924A - Electric kettle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electric kettle which prevents hot water from easily leaking even when it is brought down and facilitates pouring of hot water. <P>SOLUTION: The electric kettle 1 includes: a body 2 provided with an upper opening 7, a water storage container 5, a heater, a spout 8 and a grip part 9; and a lid body 3 provided with a ventilation part 15 having a vent hole 16 and a water stop valve 19 capable of closing the vent hole 16, wherein the lid body 3 can open and close the opening 7 of a body 2. By making the center Ob of the vent hole 16 eccentric to the side opposite to the spout 8 relative to the center Oa of the movable range A of the water stop valve 19 along a plane F defined by the abutting edge 35 of the ventilation part 15, a gap G is formed between the rear edge of the water stop valve 19 and the rear edge of the vent hole 16 when pouring hot water inside the water storage container 5, and thus the hot water is excellently poured. When the body 2 is brought down, the water stop valve 19 completely closes the vent hole 16 and prevents the hot water from leaking. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to an electric water heater capable of pouring hot water from a spout by tilting a gripped main body.

  Conventionally, as this type of electric water heater, there is a container (corresponding to the main body of the present invention) having a heater and an inner container (corresponding to the water storage container of the present invention), and a lid for closing the upper end opening of the container. Is provided with a valve port (corresponding to the vent hole of the present invention) and a water stop valve at the time of falling (see, for example, Patent Document 1). And, in such an electric water heater, the steam generated in the inner container is released to the outside from the valve port when standing upright, and the water stop valve at the time of falling comes into contact with the valve port at the time of falling. Water or hot water in the inner container is prevented from leaking from the valve port to the outside.

JP 2009-172109 A

  However, in such an electric water heater, the water stop valve may block the valve opening when the container is tilted with the handle and the hot water is poured from the spout. At this time, if hot water is filled in the pouring path, the outside air cannot flow into the inner container, which makes it difficult to pour hot water from the spout.

  An object of the present invention is to solve the above problems, and to provide an electric water heater in which hot water is difficult to leak even if it falls down and is easy to pour hot water.

  An electric water heater according to claim 1 of the present invention includes a main body having an opening formed in an upper portion thereof, and a lid body that is openably and closably attached to the main body opening. The main body includes a water storage container, A heater for heating the water stored in the water storage container, a spout for pouring out the water in the water storage container, and a grip part, and the lid body has a ventilation hole; In the electric water heater having a water stop valve capable of closing the vent hole by contacting the edge of the vent, the center of the movable range of the water stop valve on a plane defined by the contact edge of the vent On the other hand, the ventilation hole of the ventilation part is eccentric to the spout side.

  An electric water heater according to claim 2 of the present invention has a support portion for supporting the water stop valve when the main body is upright in claim 1, and a support position of the water stop valve on the support portion. Is centered on the side opposite to the spout with respect to the center of the movable range of the water stop valve.

  Furthermore, the electric water heater according to claim 3 of the present invention is the electric water heater according to claim 2, wherein the movable range of the water stop valve is formed longer from the spout side to the counter spout side.

  The electric water heater according to claim 1 of the present invention is configured as described above, so that when the gripping portion is gripped and the main body is inclined toward the spout side, the hot water in the water storage container is the pouring water. It is poured out from the mouth. At this time, the water stop valve moves to the spout side and comes into contact with the edge of the vent portion, but the center of the vent hole of the vent portion is opposite to the spout side from the center of the movable range of the stop valve. Since the gap is formed between the side edge of the vent hole and the side edge of the water stop valve, the outside air can flow into the water storage container through the gap. Thus, when the hot water in the water storage container is being poured out, the hot air can be well poured out by the outside air flowing into the water storage container so as to be replaced with the hot water to be poured out. On the other hand, when the main body falls to the counter-injection side or to the side, the water stop valve moves to the anti-injection side or to the side, abuts against the contact edge of the ventilation part, and closes the ventilation hole. The hot water can be prevented from flowing out from the vent hole.

  In addition, the main body has a support portion that supports the water stop valve when the main body is upright, and the center of the support position of the water stop valve on the support portion is counternoted with respect to the center of the movable range of the water stop valve. By decentering to the mouth side, the vent hole can be reliably closed when the main body falls to the side, and hot water can be prevented from flowing out from the vent hole.

  Further, the movable range of the water stop valve is formed so as to be longer from the spout side to the counter spout side, so that when the main body is tilted forward for pouring hot water, A gap can be reliably formed between the air holes and the hot water can be poured out well.

It is a right view of the electric water heater which shows one Embodiment of this invention. FIG. It is an expanded sectional view of the principal part at the time of standing upright. It is an expanded sectional view of the principal part at the time of forward inclination similarly. It is an expanded sectional view of the principal part at the time of back fall. It is the schematic which shows the positional relationship of the vent hole and water stop valve at the time of standing upright. It is the schematic which shows the positional relationship of the vent hole and water stop valve at the time of forward inclination similarly. It is the schematic which shows the positional relationship of a vent hole and a water stop valve at the time of a back fall. It is the schematic which shows the positional relationship of the vent hole and water stop valve at the time of left-turning. It is the schematic which shows the positional relationship of the vent hole and water stop valve in the stable state after falling.

  Hereinafter, an embodiment of the present invention will be described with reference to FIGS. 1 to 10. In the present embodiment, the left side of FIGS. 1 to 3 and 6 is the front and the right side is the rear. Reference numeral 1 denotes an electric water heater. The electric water heater 1 includes a main body 2, a lid body 3, and a power supply base 4.

  The main body 2 is provided at a water storage container 5, an outer case 6 provided so as to cover the outer periphery of the water storage container 5, and a bottom portion of the water storage container 5 to heat the water in the water storage container 5. Heater (not shown) and a power receiving terminal (not shown) provided at the bottom of the outer case 6 for supplying electric power to the heater. The main body 2 has an opening 7 at the top thereof, and the water storage container 5 can be exposed through the opening 7. In addition, the main body 2 has a spout 8 formed on the upper front side thereof, and a grip portion 9 is provided on the upper rear side (that is, the counter spout 8 side). Further, the grip 9 has a switch operation unit 10. The switch operation unit 10 is for operating a switch (not shown) provided in the grip unit 9.

  The lid 3 is detachably attached to the opening 7 of the main body 2. The lid 3 includes an upper lid member 11, a lower lid member 12, a pouring path 13 provided on the lower lid member 12 for guiding hot water in the water storage container 5 to the spout 8, An opening / closing mechanism 14 for opening and closing the pouring path 13, a ventilation portion 15 for releasing water vapor generated in the water storage container 5 to the outside of the electric water heater 1, and the ventilation portion when the main body 2 falls down And a valve mechanism 17 for closing the 15 vent holes 16. The vent hole 16 is formed in a circular shape in plan view.

  The ventilation part 15 and the valve mechanism 17 will be described in detail. The valve mechanism 17 includes a valve chamber 18 and a water stop valve 19. The valve chamber 18 is sandwiched between a valve chamber lower portion 20 formed in the lower lid member 12, a valve chamber upper portion 21 formed integrally with the ventilation portion 15, and the valve chamber lower portion 20 and the valve chamber upper portion 15. The packing 22 is configured. The valve chamber lower part 20 is provided with a through hole 23, a support part 24 for supporting the water stop valve 19 when the main body 2 is upright, and a support part 24 that supports the support part 24. It has a plurality of ribs 25 to do. The support part 24 and the rib 25 are formed integrally with the lower lid member 12. The water vapor generated in the water storage container 5 can flow into the valve chamber 18 through a region surrounded by the through hole 23, the support 24 and the rib 25. Further, the support portion 24 is provided to be deviated rearward from the center of the support portion 24, and is provided at the bottom portion 26 that is horizontal when the main body 2 is upright, and is provided in front of the bottom portion 26 and from the front to the rear. A guide portion 27 formed so as to be connected to the bottom portion 26 at the lowest portion, and a restriction that restricts the movable range of the water stop valve 19 provided to surround the bottom portion 26 and the guide portion 27. Part 28. The bottom portion 26 serves as a support position for the water stop valve 19 when the main body 2 is upright, is formed in a substantially circular shape, and its center Od is provided behind the center of the support portion 24. . The restricting portion 28 is formed in an oblong shape that is long in the front-rear direction.

  The water stop valve 19 is made of metal. As shown in FIG. 3, the water stop valve 19 is configured integrally and axisymmetrically by a short cylindrical portion 30 having a circular contact surface 29 and a truncated inverted conical portion 32 having a circular ground surface 31. ing. The contact surface 29 and the ground contact surface 31 are both flat. That is, the contact surface 29 and the ground contact surface 31 are parallel and coaxial with each other. Further, the contact surface 29 is larger in diameter than the ground contact surface 31. Further, the diameter of the ground contact surface 31 is formed substantially equal to the diameter of the bottom portion 26 of the support portion 24. Further, the angle between the conical surface 33 of the truncated conical portion 32 and the ground contact surface 31 is formed substantially equal to the angle between the regulating portion 28 and the bottom portion 26 of the support portion 24. When the main body 2 is upright, the water stop valve 19 is located behind the center of the support portion 24 (that is, the counter spout 8) by the ground contact surface 31 riding on the bottom portion 26 of the support portion 24. Side).

  As described above, the valve chamber upper portion 21 is formed integrally with the ventilation portion 15. In the valve chamber upper portion 21, a vent portion 34 of the vent portion 15 is formed so as to face the contact surface 29 of the water stop valve 19. The vent hole 16 opens in the vent portion 34. The contact edge 35 at the lower end of the vent portion 34 defines a plane F that is horizontal when the main body 2 is upright. That is, the plane F is parallel to the contact surface 29 of the water stop valve 19. The center Ob of the vent hole 16 is slightly behind the center Oc of the water stop valve 19 when the main body 2 is upright. Further, the contact surface 29 of the water stop valve 19 and the contact edge 35 come into contact when the main body 2 is inclined at a predetermined angle or more, and no gap is generated between them. The water stop valve 19 is movable in a range where the contact surface 29 contacts the contact edge 35 and the conical surface 33 contacts the restricting portion 28. The movable range A of the water stop valve 19 is an oblong shape that is slightly longer in the front-rear direction, like the support portion 24. The center Oa of the movable range A of the water stop valve 19 coincides with the center of the support portion 24. Accordingly, when the main body 2 is upright, the water stop valve 19 is supported such that the center Oc thereof is biased rearward (that is, the counter spout 8 side) from the center Oa of the movable range A. Further, the center Ob of the vent hole 16 is also provided at a distance X away from the center Oa of the movable range A of the water stop valve 19 (that is, on the counter spout 8 side).

If the inner radius at the lower end of the vent hole 16 is Ra, the radius of the contact surface 29 of the water stop valve 19 is Rb, and the distance from the center Oa to the center Oc is Y, the center Ob to the center when tilted forward The distance La from the center Ob to the center Oc at the time of backward tilting, and the distance Lc from the center Ob to the center Oc at the side tilting are respectively
La = Y + X> Rb-Ra
Lb = Y-X <Rb-Ra
Lc <Rb-Ra
It is. The eccentric distance X of the vent hole 16 with respect to the movable range A of the water stop valve 19 satisfies the above condition.

  Further, the ventilation portion 15 is branched in the lid 3, and one of the branches is connected to an exhaust port 37 formed on the upper surface of the lid 3 as the discharge port 36, and the other branched is The connection port 38 is exposed on the side surface of the lid 3. A packing 39 is sandwiched between the discharge port 36 and the exhaust port 37. And the said connection port 38 connects with the detection chamber 40 in which the heat sensitive body (not shown) in the said holding part 9 was provided.

  The power supply base 4 includes a power supply base body 41 formed in a substantially disk shape, and a power supply terminal (not shown) that is provided at the upper center of the power supply base body 41 and that is in contact with a power reception terminal provided at the bottom of the main body 2. ) And a power cord 43 provided with a power plug 42 at the tip. The power cord 43 is wound around the lower portion of the power supply base body 41.

  Next, the operation of this embodiment will be described. First, the user pulls out the power cord 43 from the power supply base 4 and connects the power plug 42 of the power cord 43 to an AC power source (not shown). And after removing the said cover body 3 from the opening part 7 of the said main body 2, and storing the water in the said water storage container 5, the said cover body 3 is attached to the said opening part 7 again. And the said main body 2 is mounted in the said power supply stand 4 so that the power receiving terminal provided in the bottom part and the power supply terminal of the said power supply stand 4 may be connected. Further, the switch operation unit 10 provided in the grip unit 9 is operated. In this way, by operating the switch operating unit 10 and turning on a switch (not shown) provided in the gripping unit 9, the power of the AC power source is the power plug 42, the power cord 43, the power feeding terminal. And it is supplied to the heater (not shown) via a power receiving terminal. When electric power is supplied to the heater, the heater generates heat and heats the water in the water storage container 5. Thus, when the water in the water storage container 5 is heated, the water becomes a high temperature, and a part thereof becomes water vapor. The water vapor thus generated flows into the valve chamber 18 from the through hole 23 of the lower lid member 12, and further flows into the vent portion 15 from the vent hole 16 of the vent portion 34. 16 is discharged from the discharge hole 36 to the outside of the electric water heater 1 through the exhaust port 37 of the upper lid member 11. A part of the water vapor that has flowed into the ventilation portion 15 flows into the detection chamber 40 from the connection port 38. A heat sensitive member (not shown) in the detection chamber 40 detects whether or not the water in the water storage container 5 is boiling based on the temperature of the water vapor flowing into the detection chamber 40. And when the said heat sensitive body detects the boiling of the water in the said water storage container 5, the switch in the said holding part 9 will be turned off. In this way, the water in the water storage container 5 is boiled.

  When pouring hot water boiled in this way into a cup or the like, the user operates the opening / closing mechanism 14 to open the pouring path 13 and then grips and lifts the grip portion 9. At this time, the power feeding base 4 is not lifted but is detached from the main body 2. Therefore, only the main body 2 to which the lid 3 is attached is lifted. And by tilting the main body 2 so that the side of the spout 8 is lowered, hot water in the water storage container 5 is poured from the spout 8 into a cup or the like through the pouring path 13. In addition, when the main body 2 to which the lid 3 is attached to the opening 7 in this way is inclined to the spout 8 side by a predetermined angle or more, the water stop valve 19 in the lid 3 becomes the spout Move to the 8th side. At this time, the water stop valve 19 moves toward the vent portion 34 along the restriction portion 28. Then, when the water stop valve 19 moves a distance Y along the surface F from the center Oa of the movable range A of the water stop valve 19 to the spout 8 side, the contact surface 29 becomes the contact edge 35. It stops when the conical surface 33 comes into contact with the restricting portion 28. At this time, the front end of the water stop valve 19 is located at the front end Ea of the movable range A of the water stop valve 19. In this state, as described above, the distance La from the center Ob of the vent hole 16 to the center Oc of the water stop valve 19 when the main body 2 is tilted forward, the inner diameter Ra of the vent hole 16, Since the relationship with the outer diameter Rb of the water stop valve 19 is La> Rb-Ra, a gap G is formed between the rear edge of the water stop valve 19 and the rear edge of the vent hole 16. Is done. Thus, by forming the gap G between the water stop valve 19 and the vent hole 16, outside air can flow into the space surrounded by the water storage container 5 and the lid 3 from the gap G. . That is, outside air flows into a space surrounded by the water storage container 5 and the lid 3 so as to replace the hot water poured out. As a result, the hot water in the water storage container 5 is satisfactorily poured into a cup or the like without being prevented from being poured out. As described above, since the movable range A of the water stop valve 19 is an oblong shape that is long in the front-rear direction, when the main body 2 is tilted forward in order to pour hot water, the water stop valve 19 Can be moved relatively large toward the spout 8, so that a gap G is reliably formed between the water stop valve 19 and the vent hole 16, and the outside air can be moved between the water storage container 5 and the lid 3. It can flow into the enclosed space. As a result, the hot water in the water storage container 5 can be favorably poured out from the spout 8.

  On the other hand, when the main body 2 in a state where the lid 3 is attached to the opening 7 in a state where water or hot water has entered the water storage container 5, the water stop valve 19 is supported. From the position (bottom 26), it moves downward according to gravity. That is, when the main body 2 falls backward, the water stop valve 19 in the lid body 3 moves to the grip portion 9 side, that is, the counter spout 8 side. At this time, the water stop valve 19 moves toward the vent portion 34 along the restriction portion 28. When the water stop valve 19 moves a distance Y along the surface F from the center Oa of the movable range A of the water stop valve 19 to the grip 9 side, the contact surface 29 is moved to the contact edge 35. It stops when the conical surface 33 comes into contact with the restricting portion 28. At this time, the rear end of the water stop valve 19 is located at the rear end Eb of the movable range A of the water stop valve 19. In this state, as described above, the distance Lb from the center Ob of the vent hole 16 to the center Oc of the water stop valve 19 when the main body 2 is tilted backward, the inner diameter Ra of the vent hole 16, When the relationship with the outer diameter Rb of the water stop valve 19 is Lb <Rb−Ra, the water stop valve 19 closes the vent hole 16 without a gap.

  Further, when the main body 2 falls to the side (in this example, the left side is the same, but the right side is the same), the water stop valve 19 in the lid 3 moves to the left side. At this time, the water stop valve 19 moves toward the vent portion 34 along the restriction portion 28. When the water stop valve 19 moves to the left along the surface F, the water stop valve 19 stops when the contact surface 29 comes into contact with the contact edge 35 and the conical surface 33 comes into contact with the restricting portion 28. At this time, the left end of the water stop valve 19 is located at the left end Ec of the movable range A of the water stop valve 19. In this state, as described above, the distance Lc from the center Ob of the vent hole 16 to the center Oc of the water stop valve 19 when the main body 2 is turned over, the inner diameter Ra of the vent hole 16, When the relationship with the outer diameter Rb of the water stop valve 19 is Lc <Rb−Ra, the water stop valve 19 closes the vent hole 16 without a gap. Note that, as described above, when the main body 2 is upright, the water stop valve 19 is supported by being biased to the rear (that is, the counter spout 8 side) from the center Oa of the movable range A. Even when the main body 2 falls sideways, the distance Lc from the center Ob of the vent hole 16 to the center Oc of the water stop valve 19 does not increase. For this reason, Lc can be surely made smaller than Rb-Ra.

  In addition, when the main body 2 falls backward, it is unstable when only the grip 9 is in contact with a horizontal surface such as a table top plate, and further falls in either the left or right direction. On the other hand, when the main body 2 falls to the side, the main body 2 rolls until the gripping portion 9 comes into contact with a horizontal surface such as a table top plate because the gripping portion 9 side has a heavy weight balance. That is, even if the main body 2 falls down in any direction, it is equivalent to the fact that the side surface of the main body 2 and the grip portion 9 are in contact with a horizontal surface such as a table top plate due to its weight balance. Stable in posture. Even in this state, the relationship between the distance Ld from the center Ob of the vent hole 16 to the center Oc of the water stop valve 19, the inner diameter Ra of the vent hole 16, and the outer diameter Rb of the water stop valve 19 is as follows. Ld <Rb−Ra, and the water stop valve 19 closes the vent hole 16 without a gap. In addition, when the said main body 2 falls forward or diagonally forward, the clearance gap G arises between the said vent hole 16 and the water stop valve 19, and water or hot water may leak from this clearance gap. However, as described above, the body 2 that has fallen further moves due to its weight balance, and assumes a posture equivalent to that of the body 2 that has fallen diagonally backward. As a result, the water stop valve 19 completely closes the vent hole 16. Therefore, even if water or hot water in the water storage container 5 leaks from the vent hole 16, it can be minimized.

  And if the said main body 2 inclined forward for pouring is raised, the said water stop valve 19 will return on the said support part 24. FIG. Similarly, when the body 2 that has fallen is raised, the water stop valve 19 returns to the support portion 24. At this time, the water stop valve 19 descends along the restriction portion 28 of the support portion 24. In particular, when the main body 2 is raised from a forward inclined state, the water stop valve 19 descends along the restriction portion 28 and the guide portion 27. As a result, the water stop valve 19 returns to the state shown in FIG. 3 in which the ground contact surface 31 is on the bottom 26 of the support 24.

  As described above, the present invention includes the main body 2 having the opening 7 formed in the upper portion and the lid body 3 that can be freely opened and closed to the opening 7. The main body 2 includes the water storage container 5 and the storage container 5. A heater (not shown) that heats the water in the water storage container 5, a spout 8 for pouring the water in the water storage container 5, and a grip 9, and the lid 3 has a vent hole 16. In the electric water heater 1 having the ventilation portion 15 having the water stop valve 19 that abuts on the abutment edge 35 of the vent portion 34 of the ventilation portion 15 and can close the ventilation hole 16, By decentering the center Ob of the vent hole 16 toward the counter spout 8 with respect to the center Oa of the movable range A of the water stop valve 19 along the defined plane F, the hot water in the water storage container 5 can be removed. When dispensing, a gap G is formed between the rear edge of the water stop valve 19 and the rear edge of the vent hole 16. Since the outside air flows into the water storage container 5, hot water can be poured out well, but when the main body 2 falls, the water stop valve 19 completely opens the vent hole 16. Therefore, hot water can be prevented from flowing out from the vent hole 16.

  In addition, the present invention has a support portion 24 that supports the water stop valve 19 when the main body 2 is upright, and the center of the bottom portion 26 serving as a support position of the water stop valve 19 on the support portion 24 is Since the center of the movable range A of the water stop valve 19 is decentered toward the counter spout 8 side, the vent hole 16 is reliably closed even when the main body 2 is tilted to the side. The hot water can be prevented from flowing out from the hole 16.

  Furthermore, in the present invention, the movable range A of the water stop valve 19 is formed in a long oval shape in the front-rear direction, so that when the main body 2 is tilted forward in order to pour hot water, the water stop valve 19 A gap G is reliably formed between the rear edge and the rear edge of the vent hole 16 so that hot water can be poured out satisfactorily.

  In addition, this invention is not limited to the above embodiment, A various deformation | transformation implementation is possible within the range of the summary of invention. For example, in the above embodiment, the movable range of the water stop valve is oval, but the movable range may be circular as long as no gap occurs when the water stop valve is moved to the left or right. Absent.

DESCRIPTION OF SYMBOLS 1 Electric water heater 2 Main body 3 Cover body 5 Water storage container 7 Opening part 8 Spout 9 Grasping part 15 Ventilation part 16 Vent hole 19 Water stop valve 26 Bottom part (support position of the water stop valve 19)
35 Abutting edge A movable range of the water stop valve 19 F plane Oa center of the movable range A of the water stop valve 19 Ob center of the vent hole 16 Od center of the bottom portion 26 (support position of the water stop valve 19) X water stop valve 19 Eccentric distance of vent hole 16 with respect to movable range A

Claims (3)

A main body having an opening formed in the upper portion thereof, and a lid that is openably and closably attached to the main body opening; wherein the main body includes a water storage container and a heater that heats water stored in the water storage container; A water inlet for pouring out the water in the water storage container, and a grip portion, and the lid body has a vent hole having a vent hole, and the vent hole is in contact with an edge of the vent section. In an electric water heater having a shut-off water stop valve,
An electric water heater, wherein a vent hole of the vent portion is eccentric to a counter spout side with respect to a center of a movable range of the water stop valve on a plane defined by a contact edge of the vent portion.   A support portion that supports the water stop valve when the electric water heater is upright, and the center of the support position of the water stop valve on the support portion is a counter spout with respect to the center of the movable range of the water stop valve The electric water heater according to claim 1, wherein the electric water heater is eccentric to the side.   The electric water heater according to claim 2, wherein the movable range of the water stop valve is formed long from the spout side to the counter spout side.

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