JP2018019835A - Liquid heating container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a thermal fuse attaching structure for a liquid heating container that can function more accurately and reliably than a conventional one.SOLUTION: A liquid heating container includes a container body in which liquid is put, annular heating means 60 for heating the liquid, a thermal fuse 70 electrically connected to the heating means, a holding member 75 for holding the thermal fuse, and a lid body provided above the container body. The heating means is located circumferentially on the outer surface of the bottom of the container body. The thermal fuse is located inside the heating means away from the heating means, and is in contact with the outer surface of the bottom.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a temperature fuse mounting structure for a liquid heating container such as an electric kettle for boiling hot water.

  For example, electric kettles are widely available that contain water as a liquid heating container and use water for electricity. As an example of such an electric kettle heating means, there is known a “heating means comprising a heater housing member made of an annular aluminum die-cast with an embedded heater” attached to the bottom of a container body into which water is put by brazing or the like. It has been.

  In the case of such heating means, the bottom member of the container body is, for example, a two-layer structure in which an aluminum flat plate is welded to the outer surface of a stainless steel flat plate, brazing of the heating means, etc. Is easy to install, and further heat conduction to the water in the container body is improved.

  Specifically, when the heating means is energized, the heating means generates heat, and by heat conduction of the generated heat, an aluminum flat plate that is a good thermal conductor and a large heat capacity generates heat in a short time, and then a stainless steel flat plate becomes Heat is generated in a short time to heat the water in the electric kettle.

  By the way, in the conventional electric kettle, a temperature fuse is electrically connected to the heating means in consideration of safety. For example, when the boiling means or the air blow switch fails and the heating means becomes abnormally hot, the temperature fuse Has melted and cut off the current to ensure safety.

  FIG. 8 shows an example of a conventional temperature fuse mounting structure. FIG. 8 is a schematic view of the vicinity of the bottom of the container body.

  The bottom member 1 of the container body into which water is placed is composed of, for example, two layers of a stainless steel member and an aluminum member, and a flat surface comprising a heater housing member 2b made of aluminum die cast in which a heater 2a is embedded on the outer surface of the outer aluminum member. A heating means 2 having a substantially C-shape and having an inverted trapezoidal cross section is brazed.

  Further, a boss-like attachment member 3 having a screw hole hangs down inside the heater housing member 2b, and a thermal fuse holding member 5 is attached to the lower end surface of the heater storage member 2b by screws 4.

  The thermal fuse holding member 5 is a flat metal member having a good heat conductivity formed by bending a plurality of times, and includes a horizontal fixing portion 5a, a holding portion 5b bent in a loop shape, and a fixing portion 5a. And a vertical connecting portion 5c that connects the holding portion 5b.

  And the said fixing | fixed part 5a is fixed to the attachment member 3 with the screw | thread 4, The said holding | maintenance part 5b hold | maintains the form which wraps the two temperature fuses 6 and 6, The upper surface is the lower end surface of the heater accommodating member 2b When the heating means 2 is abnormally overheated, the thermal fuses 6 and 6 are melted by receiving the heat to ensure safety (for example, see Patent Document 1).

  By the way, when boiling with an electric kettle, it is known that many bubbles are generated in the region near the bottom inner surface of the container body, but this phenomenon intermittently makes the region near the inner surface of the bottom intermittently close to an empty state. To do.

  Therefore, the temperature rise of the heating means becomes unstable, and an intermittent overheating state occurs in the heating means. For this reason, if a thermal fuse is provided in contact with the heating means, the thermal fuse may be blown even during normal water boiling.

  Further, the conventional heating means is a good heat conductor at the bottom of the container body and has a large heat capacity, for example, an aluminum member that comes into surface contact and hangs downward, and the thermal fuse is close to line contact with the lower end surface of the heating means. In such a structure, the heat of the heating means is more likely to flow to the bottom member than the thermal fuse.

  For this reason, for example, when the boiling switch or the air-operated switch breaks down and the heating means becomes overheated, most of the heat of the heating means flows to the bottom member, which has a detrimental effect that the fusing of the thermal fuse is delayed.

  Moreover, since the conventional thermal fuse is provided in the form close | similar to a line contact at the lower end surface of a heating means, some installation accuracy is needed.

  The electric kettle is provided with a predetermined distance between the heating means and the bottom case for safety, but if a thermal fuse is provided on the lower end surface of the heating means as in the conventional example, The distance between the bottom case is shortened, and it is necessary to insert a separate heat insulating material between the thermal fuse and the bottom case, or to widen the heating means and the bottom case by the thermal fuse. If such a problem is dealt with, a new adverse effect that the production cost will rise accordingly.

Japanese Patent No. 5038107 (FIG. 8)

  SUMMARY OF THE INVENTION An object of the present invention is to solve such a problem, and to provide a mounting structure for a thermal fuse of a liquid heating container that can function more accurately and more reliably than conventional ones.

  In order to achieve the above object, the present invention adopts the following configuration.

  In the invention according to claim 1, a container main body for containing a liquid, an annular heating means for heating the liquid, a temperature fuse electrically connected to the heating means, a holding member for holding the temperature fuse, A liquid heating container having a lid provided above the container body, wherein the heating means is located circumferentially on the outer surface of the bottom of the container body, and the thermal fuse is located inside the heating means. The structure located away from the means and in contact with the outer surface of the bottom.

  The “annular heating means” may be completely annular or may have a substantially C shape in plan view with a notch in a part thereof, and the “circumferential shape” may not be a perfect circle. The “contact with the outer surface of the bottom” may be in direct contact with the thermal fuse or indirectly through the holding member.

  According to a second aspect of the present invention, the holding member is located inside the heating means and has a holding portion for holding the thermal fuse, and the holding portion is in contact with the bottom outer surface.

  According to a third aspect of the present invention, the bottom outer surface has an attachment member for attaching the holding member, and the attachment member is positioned between the heating means and the thermal fuse.

  In the present invention, the temperature fuse is provided on the outer surface of the bottom of the container body inside the heating means so as to be separated from the heating means, thereby eliminating the possibility that the temperature fuse is blown during normal boiling.

  In addition, since the abnormal temperature of the heating means can be stably and promptly transmitted to the thermal fuse, the thermal fuse can be blown in a short time and reliably, and as a result, the reliability of the thermal fuse is improved. can do.

  Further, since the thermal fuse may be anywhere on the outer surface of the bottom of the container main body without an obstacle inside the heating means, it can be easily attached.

  Moreover, since the space between the heating means and the bottom case can be set to a predetermined interval as in the past, an increase in production cost can be suppressed.

  In addition, a holding member that holds the thermal fuse is provided inside the heating means, and the holding portion is in contact with the bottom outer surface, so that the thermal fuse can be easily attached, and further, radiant heat from the heating means is held. Since it can be transmitted to the thermal fuse via the member, the fusing function of the thermal fuse can be further enhanced.

  In addition, by providing an attachment member for attaching the holding member between the heating means on the bottom outer surface and the thermal fuse, the thermal fuse can be easily attached and the radiant heat from the heating means is passed through the attachment member. Therefore, the fusing function of the thermal fuse can be further enhanced.

Overall cross section of electric kettle Figure showing the state where the electric kettle is inverted and the bottom case is removed as seen from above. (A) is a perspective view of the heating means, (B) is a partial sectional view of the heating means. Cross section of thermal fuse Perspective view of holding member Sectional drawing which shows the positional relationship of a heating means, an attachment member, a holding member, and a thermal fuse. Sectional drawing which shows the modification of the holding member corresponding to FIG. Schematic sectional view of a conventional thermal fuse

  The liquid heating container may be anything as long as a liquid such as water is put into the container and heated by the heating means, and will be described below using an electric kettle.

  FIG. 1 shows a sectional view of the entire electric kettle, FIG. 2 shows a perspective view of a bottom portion to which a thermal fuse is attached, FIGS. 3 to 5 show perspective views of each member, and FIGS. An arrangement structure is shown. The outlet side of the electric kettle is the front side, the handle side opposite to the outlet is the rear side, and the side orthogonal to the front-rear direction is the left-right direction.

  The electric kettle S, which is a liquid heating container, includes a container body 20 for storing water and the like, a shoulder member 25, an outer case 30, a bottom case 35, a lid body 45, and a power supply base 40.

  The container body 20 includes a substantially cylindrical resin member 21 that is open at the top and bottom, and a bottom member 22 that forms the bottom of the container body 20, and water is placed therein, for example, on the outer surface of the bottom member 22. It is heated by the heating means 60 attached.

  The bottom member 22 is a metal member having a good thermal conductivity and a large heat capacity, for example, a dish-shaped member made of aluminum, copper, silver, iron, and stainless steel. An annular sealing member 22c is formed on the bottom inner surface of the resin member 21. It is press-fitted through and integrated. The resin member 21 may be made of metal and integrally formed with the bottom member 22.

  As shown in FIG. 6, the bottom member 22 has a two-layer structure in which a concentric aluminum flat plate 22b is welded to the outer surface of a circular stainless steel flat plate 22a. The outer surface of the aluminum flat plate 22b is heated. A means 60 is attached.

  By using the double structure as described above, the strength of the bottom member 22 can be increased, and the efficiency of heat transfer to water is improved. In addition, the bottom member 22 may be a single layer structure of a metal member having a good thermal conductivity and a large heat capacity.

  A heating means 60 is attached near the outer periphery of the outer surface of the bottom member 22, and a socket 23 to which a connection terminal 41 of the power supply base 40 is electrically connected is provided at the center of the bottom member 22 (FIG. 1). 2). The socket 23 is electrically connected to the heating means 60.

  In addition, on the outer periphery of the socket 23, there are two bimetals 24 24 which are air-operated switches. The two bimetals 24 24 are provided in opposite directions with the socket 23 in between, and the provided direction is the left-right direction orthogonal to the front-rear direction connecting the spout 26 and the handle 27, and FIG. One of them is shown.

  On the side surface of the container body 20, there is a water amount display portion (not shown) that is long in the vertical direction. The water amount display portion is a transparent resin, and is integrated with a vertically long and rectangular window formed on the side surface of the container body 20 by insert molding or the like.

  The shoulder member 25 is a resin member positioned above the container body 20, and has a spout 26 that tapers outward on the front side, opposite to the spout 26 on the rear side. There is a handle 27 on the side. The container body 20 and the shoulder member 25 may be integrated or separated.

  The handle 27 has a push switch 28 for heating the heating means 60 and a temperature sensing member 29 that senses steam and turns off the energization (see FIG. 1).

  The outer case 30 is a cylindrical resin member that covers the container body 20, the upper end thereof is positioned below the shoulder member 25, the lower end thereof extends downward, and is attached to the outer periphery of the container body 20. 20 is covered.

  By providing the outer case 30, a color or a pattern can be applied to the surface, thereby improving design. In addition, a heat insulating space 31 is provided between the outer case 30 and the container body 20 to reduce heating of the outer case 30.

  Further, the outer case 30 has a transparent water amount display window 33 in the same position and the same shape as the water amount display portion of the container body 20 (see FIG. 2), and the amount of water in the container body 20 from the outside of the outer case 30. Is visible. The outer case 30 may not be provided.

  By the way, a substantially annular rib 32 is provided on the outer periphery of the container main body 20, and when the outer case 30 is attached to the outer periphery of the container main body 20, the tip of the rib 32 abuts on the inner peripheral surface of the outer case 30. Alternatively, they face each other with a slight gap. Therefore, when external force is applied to the outer case 30 from the outside after the outer case 30 is attached, deformation of the outer case 30 can be reduced.

  The bottom case 35 is a resin-made dish-like member positioned below the container body 20, and has a central opening 36 into which the connection terminal 41 of the power supply base 40 is inserted at the bottom, and a screw hole in the vicinity of the outer periphery. Have

  And the upper end part of the bottom case 35 is fitted to the lower end part of the container main body 20, and the screw 37 is inserted and fixed to the said screw hole from the downward direction (refer FIG. 1). Note that the lower end portion of the outer case 30 is in contact with the upper portion of the bottom case 35, and when the bottom case 35 is fixed, the outer case 30 is sandwiched between the shoulder member 25 and the bottom case 35.

  The power supply stand 40 is a resin member having an inverted dish shape in cross section located below the bottom case 35, and supports the electric kettle S in a stable state. And the power supply stand 40 has the column-shaped connection terminal 41 in the center.

  When the electric kettle S is placed on the power base 40, a plug (not shown) of the power base 40 is inserted into an outlet, and the push switch 28 provided on the handle 27 is depressed, the heating means 60 is energized via the connection terminal 41. The

  The lid body 45 includes a valve member 46, a steam passage 50, and an opening / closing lever 51. The valve member 46 is a resin member having an inverted T-shaped cross section, and has an annular packing 46 a on the outer periphery of the valve body, and seals the inside of the container body 20 when the lid body 45 is closed.

  A push button 47 is disposed above the valve member 46, and when the push button 47 is pushed downward, the valve member 46 descends downward and communicates with the spout 26 through the liquid injection passage 48 in the container body 20. To do.

  A steam port 49 is opened behind the lid 45. For example, two steam ports 49 are provided in the upper and lower directions, and the steam passage 50 communicates with a space 29 a having a temperature sensing member 29 formed above the handle 27 via the lower steam port 49. The space 29 a communicates again with a steam passage (not shown) in the lid body 45 through the upper steam port 49, and the steam passage communicates with the spout 26 through the liquid injection passage 48.

  When steam is generated in the container main body 20, the steam flows into the space 29a through the steam passage 50 as indicated by an arrow (1), reverses as indicated by an arrow (2) in the space 29a, and the lid body. It flows in 45 like arrows (3) and (4) and reaches the spout 26. When the steam is sent to the temperature sensing member 29, the temperature sensing member 29 turns off the push switch 28.

  The opening / closing lever 51 has two levers provided opposite to each other in the radial direction. When these two levers are sandwiched between fingers and pressed toward the center, the opening / closing lever 51 is interlocked with the two levers and engaged with the shoulder member 25. Since the engaging piece (not shown) to be combined is drawn into the lid body 45, the lid body 45 is lifted upward to be opened.

  The heating means 60 will be described. As shown in FIG. 3, the heating means 60 is a member that has a heater 61 and a heater housing member 62 in which the heater 61 is embedded by aluminum die casting, and has a substantially C shape in plan view and a vertical cross-sectional inverted trapezoidal shape. is there. That is, the upper end surface 62a having a large area is provided above, and the lower end surface 62b having a small area is provided below. Note that FIG. 3 is shown upside down. Moreover, the cross-sectional shape of the heating means 60 is not limited to the above shape, and may be, for example, a rectangular shape or an elliptical shape.

  The upper end surface 62a having a large area of the heater housing member 62 is flat, and is brought into surface contact with the lower surface of the aluminum flat plate 22b of the bottom member 22 and integrated by brazing. Thus, since the upper end surface 62a of the heater housing member 62 that contacts the aluminum flat plate 22b has a large area and the same material, both members can be easily integrated, Heat transfer is improved.

  That is, when the heating means 60 is energized, the heater 61 generates heat, and the heat is transmitted to the aluminum flat plate 22b having a large heat capacity through the heater housing member 62 in a short time, and then the stainless flat plate 22a is short. Heat is generated over time, and the water in the electric kettle S is heated. The bottom member 22 may have a single-layer structure made of a stainless steel flat plate 22a or an aluminum flat plate 22b.

  As shown in FIG. 2, the heating means 60 is attached circumferentially in the vicinity of the outer periphery of the outer surface of the bottom member 22, and the heater terminals 61a and 61a connected to the lead wire 70b in opposite forms at both ends to be cut off. Have And in the center part of the bottom member 22 which is also the center part of the heating means 60, the socket 23 which the connection terminal 41 of the power supply stand 40 electrically connects is located. Note that the annular heating means of the present invention may have such a substantially C shape in plan view.

  A thermal fuse 70 is electrically connected to the heating means 60. The thermal fuse 70 is an overheat protection component that senses the heat generated by the device due to an overcurrent caused by a short circuit of the electrical device or a failure of the circuit component, and shuts off the circuit. An example is shown in FIG.

  The one shown in FIG. 4 is made of a low-melting-point soluble material. For example, a lead wire 70b is welded to a low-melting-point soluble alloy 70a such as lead, and the surface is specially made to surely perform fusing during operation. After coating the resin 70c, it is inserted into a cylindrical insulating case 70d, and both openings of the insulating case 70d are completely sealed with sealing materials 70e and 70e.

  The thermal fuse 70 is an arc-shaped or linear member that is provided inside the heating unit 60 in a form that is separated from the heating unit 60 and is in contact with the bottom member 22. Since the socket 23 is provided at the center of the bottom member 22, the region where the temperature fuse 70 is provided is a region between the inside of the heating means 60 and the outside of the socket 23.

  The position where the thermal fuse 70 is provided is a direction substantially perpendicular to the two bimetals 24, 24 provided in the left-right direction across the socket 23 described above, and in the case of this embodiment, the front-rear direction.

  By the way, it is conceivable that foreign matter such as an electric wire is sandwiched under the power supply base 40 and the electric kettle S is heated while the electric kettle S is inclined. For example, when the electric kettle S is greatly inclined, the water in the container body 20 further flows. In the case of a small amount, even if the air switch is normal, it may overheat locally.

  That is, when there are bimetal switches 24, 24 in the left-right direction, even if the electric kettle S is tilted in either the left-right direction, one bimetal 24 is located on the water surface, The bimetal 24 is safe because it detects an abnormal temperature and turns off the air-operated switch. However, if the electric kettle S tilts in one of the directions substantially orthogonal to the two bimetals 24, both the bimetals 24 , 24 will be located below the surface of the water, and an abnormal temperature of the part that has come out on the water cannot be detected, resulting in a dangerous state.

  In this embodiment, since the thermal fuse 70 is arranged in one of the directions substantially orthogonal to the two bimetals 24, 24, when the direction in which the thermal fuse 70 is provided is inclined so that the temperature fuse 70 is inclined, Since it is melted by the abnormal temperature of the part located above and coming out on the water, it becomes possible to eliminate the dangerous state. However, if the direction in which there is no thermal fuse 70 in a direction substantially orthogonal to the two bimetals 24, 24 is inclined to be higher, a dangerous state still occurs.

  In any case, by providing the thermal fuse 70 in a direction perpendicular to the line connecting the two bimetals 24, 24, the thermal fuse 70 is not provided in this direction, for example, the thermal fuse 70 is provided in the left-right direction. The above-mentioned adverse effects can be reduced as compared with the above.

  As shown in FIGS. 1 and 2, in the present embodiment, the position where the thermal fuse 70 is provided is on the side of the spout 26 in the front-rear direction.

  By the way, hot water may be poured out immediately after boiling in the electric kettle S, but if the amount of water in the container main body 20 is originally small at the time of boiling, the bottom member 22 is inclined when the electric kettle S is tilted forward at the time of pouring. There may be no hot water at the rear.

  In this state, since the heating means 60 is still in a heated state, the temperature of the rear part of the bottom member 22 without hot water rises abnormally and becomes overheated. Temporarily, a thermal fuse 70 is provided at the rear part of the bottom member 22. If this is the case, the thermal fuse 70 may be blown out in spite of a normal state that is not an abnormal state.

  In this embodiment, since the thermal fuse 70 is disposed on the outlet 26 side, the thermal fuse 70 is located in an area where hot water is present in the above state, and as a result, the above-described adverse effects can be eliminated.

  The temperature fuse 70 is provided in a form that is held by the holding member 75, and the holding member 75 is attached to the attachment member 80. The members 75 and 80 will be described below.

  The holding member 75 is for holding the thermal fuse 70 at a predetermined position. As shown in FIG. 5, the holding member 75 is a flat metal member having a good heat conduction formed by bending a plurality of times, and the fixing portion 76. And a holding portion 77 and a connecting portion 78.

  As shown in FIG. 6 and the like, the fixing portion 76 is a portion provided horizontally in the vicinity of the heating means 60, has two screw holes 76 a and 76 a, and is attached to the attachment member 80 with screws 81. And the fixing | fixed part 76 is attached to the position where the height from the bottom member 22 after fixation becomes the same as the height between the upper end surface 62a and the lower end surface 62b of the heating means 60, or a little longer.

  The holding portion 77 is located on the inner side of the fixing portion 76, specifically, on the opposite side of the heating means 60 with the connecting portion 78 interposed therebetween, and has a circular arc portion 77a. The fuse 70 is held, and the upper end 77aa of the fuse 70 is in contact with the outer surface of the bottom member 22. Note that the upper end portion 77aa and the bottom member 22 may be in line contact, or the upper end portion 77aa may be flat and brought into surface contact.

  The connecting portion 78 is a standing wall-like portion located between the fixing portion 76 and the holding portion 77 and faces the inner peripheral surface of the heating means 60. In other words, the inner peripheral surface of the heating unit 60 and the connecting portion 78 are in a parallel state, and the inner peripheral surface of the heating unit 60 and the outer peripheral surface of the thermal fuse 70 are in a parallel state.

  As described above, the mounting position of the holding member 75 is an area between the inside of the heating means 60 and the outside of the socket 23 as in the case of the thermal fuse 70, and the fixing portion 76 is outside, that is, the heating means 60. The holding part 77 is located on the inner side, that is, on the socket 23 side, the connecting part 78 is located between the fixing part 76 and the holding part 77 as a whole in the radial direction, and further the heater terminal 61a. , 61a.

  As described above, the heater terminals 61a and 61a are positioned on the handle 27 side of the electric kettle S, the thermal fuse 70 is positioned on the outlet 26 side, and the two bimetals 24 and 24 are connected to the handle. This is a direction orthogonal to the front-rear direction line connecting 27 and the thermal fuse 70.

  The mounting member 80 is, for example, a single rod-shaped boss member that hangs down from the bottom member 22 near the heating unit 60 between the heating unit 60 and the thermal fuse 70, and an upper end surface 62 a and a lower end surface of the heating unit 60. The screw 81 is inserted into one screw hole 76a in the two screw holes 76a, 76a of the fixing portion 76 at the lower end surface thereof. Fixed. The attachment member 80 is formed of a metal member having good heat conduction and may be integrated with the bottom member 22 or may be a separate member.

  A positioning pin is inserted into the other screw hole 76 a of the fixing portion 76. That is, the holding member 75 is fixed by a combination of one mounting member 80 and one positioning pin, and the number of the screws 81 is one, so that the member cost and the assembly cost can be reduced.

  The positional relationship among the heating means 60, the thermal fuse 70, the holding member 75, and the mounting member 80 is as described above and as shown in FIG. 6, and the heat transfer from the heater 61 is based on the description in the figure. I will explain.

  That is, when the heater 61 is energized, the heat from the heater 61 is transmitted to the aluminum flat plate 22b through the heater housing member 62 as indicated by an arrow (1), and thereafter, as indicated by an arrow (2). It is transmitted to the thermal fuse 70 via the holding member 75.

  In this case, the upper end surface 62a of the heater storage member 62 is in surface contact with the aluminum flat plate 22b, and the heater storage member 62 and the aluminum flat plate 22b are made of the same material, so that heat is transferred in a short time. Therefore, at the time of abnormality, the thermal fuse blows reliably in a short time.

  Moreover, since the attachment position of the temperature fuse 70 may be anywhere between the heating means 60 and the socket 23, the attachment of the temperature fuse 70 becomes easy.

  Further, an attachment member 80 is provided between the heating means 60 and the temperature fuse 70, and the radiant heat from the heater housing member 62 is transmitted to the attachment member 80 as indicated by an arrow (3), and then by heat conduction. As indicated by arrows (4) and (5), the heat is transmitted to the thermal fuse 70 via the aluminum flat plate 22b and the holding member 75.

  In this case, the position of the fixing portion 76 is a position that does not block the radiant heat, and the height of the mounting member 80 is a height that can receive all of the radiant heat radiated in the direction of the mounting member 80 and is radiated. Radiant heat can be used efficiently.

  That is, the attachment member 80 has both the fixing function of the holding member 75 and the heat transfer function of radiant heat to the thermal fuse 70. As a result, the holding member 75 can be easily fixed and the temperature at the time of abnormality Fusing of the fuse becomes shorter and more reliable.

  Further, the connecting portion 78 of the holding member 75 is positioned between the heating means 60 and the thermal fuse 70 so that the radiant heat from the heater housing member 62 is held as indicated by an arrow (6). It is transmitted to the member 75 and then transmitted to the thermal fuse 70 via the holding member 75.

  That is, the holding member 75 has both the holding function of the thermal fuse 70 and the heat transfer function of the radiant heat to the thermal fuse 70. As a result, the holding of the thermal fuse 70 becomes easy and the temperature at the time of abnormality Fusing of the fuse becomes shorter and more reliable.

  FIG. 7 shows a modification of the holding member 75. Although the thing of FIG. 6 contacts the bottom member 22 indirectly through the holding | maintenance part 77 with the thermal fuse 70, the thing of this example reverses direction of the holding | maintenance part 77, and the thermal fuse 70 is attached. The thermal fuse 70 can be blown in a shorter time and more reliably with such an arrangement structure.

  Note that the contact between the thermal fuse 70 and the bottom member 22 may be a line contact, or the contact portion of the thermal fuse 70 may be flat and brought into surface contact. Other parts are the same as those in FIG.

  The present invention is not limited to the configuration of the above-described embodiment, and can be appropriately changed in design without departing from the gist of the invention.

S electric kettle 20 container body 21 resin member 22 bottom member 22a stainless steel flat plate 22b aluminum flat plate 22c sealing member 23 socket 24 bimetal 25 shoulder member 26 outlet 27 handle 28 push switch 29 temperature sensing member 29a space 30 outer case 31 Heat insulation space 32 Rib 33 Water amount display window 35 Bottom case 36 Center opening 37 Screw 40 Power supply base 41 Connection terminal 45 Cover body 46 Valve member 46a Annular packing 47 Press button 48 Liquid injection passage 49 Steam port 50 Steam passage 51 Opening / closing lever 60 Heating means 61 Heater 61a Heater terminal 62 Heater storage member 62a Upper end surface 62b Lower end surface 70 Thermal fuse 70a Low melting point soluble alloy 70b Lead wire 70c Special resin 70d Insulating case 70e Sealing material 75 Holding member 76 Fixed portion 76a It burrows 77 holding portion 77a arcuate portion 77aa upper portion 78 connecting portion 80 the mounting member 81 screws

Claims (3)

A container main body for storing liquid, an annular heating means for heating the liquid, a temperature fuse electrically connected to the heating means, a holding member for holding the temperature fuse, and a lid provided above the container main body A liquid heating container having a body,
The heating means is located circumferentially on the outer surface of the bottom of the container body,
The liquid heating container, wherein the thermal fuse is located inside the heating unit and is spaced apart from the heating unit and is in contact with the outer surface of the bottom portion. The holding member is located inside the heating means, and has a holding portion for holding the thermal fuse,
The liquid heating container according to claim 1, wherein the holding portion is in contact with the outer surface of the bottom portion. The bottom outer surface has an attachment member for attaching the holding member,
The liquid heating container according to claim 1, wherein the attachment member is located between the heating unit and the thermal fuse.

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