JP3994973B2 - Electric water heater - Google Patents

Description

  The present invention relates to a simple electric water heater that is heated by a heater using a water heater that can be handled independently.

A general electric pot that heats the inner container housed in the outer case with a heater equipped on the outer case side so that the inner container can be detached and handled independently (see, for example, Patent Document 1). On the other hand, there is known a small and simple electric water heater that can be heated by a heater using a single structure water heater (see, for example, Patent Documents 2 and 3). This is an assembly in which a metal container and a heater built-in part for heating the metal container are integrally assembled, and has a slim shape in which the water heater container and the heater built-in part are continuous in a substantially flush state. On the other hand, a pot for sencha is also known in which a single container that can be handled independently is heated by a heater and heated to extract medicinal components (for example, see Patent Document 4). This is made by using a glass server as a container and placing the server on the main body with a built-in heater so that the server can be attached and detached. It is configured to be fitted and placed stably inside. For extraction of medicinal ingredients, a lid attached to the server supports the filter unit containing tea and medicinal ingredients so that it is above the surface of the hot water, and steam comes into contact with the medicinal ingredients and steams. The extracted medicinal component falls into the hot water and dissolves.
JP-A-6-296555 Japanese Patent Laid-Open No. 5-293401 JP 2000-166765 A JP-A-8-275989

  However, although the one described in Patent Document 1 is a single-walled inner container that can be handled alone, it has a built-in heater and is combined with an exterior body that houses the inner container. Is bulky and heavy with respect to capacity. For this reason, it is far from suitable for carrying on a trip or a business trip on a summarized schedule. Further, the ones described in Patent Documents 2 and 3 are simpler, smaller and easier to handle than those described in Patent Document 1. However, downsizing is still desirable for traveling and business trips. Although the thing of patent document 4 can handle a container independently, since it is bulky and heavy as a whole compared with the thing of patent documents 2 and 3, it is hard to carry.

  Although further compactness is convenient for storage and is strongly desired, it is difficult to make the entire volume more compact than those described in Patent Documents 2 and 3. In connection with this, while the inventors have repeatedly studied through trial and error, the entire volume when not in use can be made compact by reverse use of the capacity area compared to the entire volume when used corresponding to the capacity of the kettle. I found.

  An object of the present invention is to provide a simple electric water heater in which the entire volume when not in use is made compact relative to the entire volume when used based on such new knowledge.

In order to achieve the above object, an electric water heater of the present invention includes a water heater container, a stationary part placed on a support surface, and a container placing part that is placed so that the water heater container can be attached and detached and used for boiling water or storing hot water. A main body with a heater, a heater for heating the water heater container placed on the container mounting portion, and a lid for closing the upper end opening of the water heater container, the main body being a container smaller than the upper end opening of the water heater container One feature is that a predetermined amount is accommodated in the water heater container with the mounting portion facing the container, and the storage space is provided below .

In such a configuration, the heater is heated by, for example, placing a kettle container containing water on the container placing part of the main body placed on the support surface by the stationary part, and the heat escape by the lid is suppressed, Boiling water can be prevented to prevent foreign substances from entering, and the boiling water can be used easily and easily by lifting the water container from the main body and handling it alone. In addition, the main body should be sized to the minimum necessary to allow the water heater to be placed and heated by the heater relative to the capacity of the water heater. Can be slimmed to the limit . When not in use, a predetermined amount of the main body separated from the water heater can be accommodated, and electrical equipment or electrical equipment including a heater can be accommodated under the main body. The capacity is used for such accommodation. The entire volume when not in use can be reduced relative to that when in use, so that it is not bulky. In particular, since the main body is accommodated in the container with the container placement portion made smaller than the upper end opening of the kettle container, the main body can be easily accommodated, and the container placement portion can be directed inward to be protected from external force.

Further, the electric water heater of the present invention includes a water heater container that performs water heating and hot water storage, a stationary part that is placed on a support surface, a container placing part that is placed so that the water heating container can be attached and detached, and the container placing part. A main body with a heater for heating the hot water container placed therein, a lid for closing the upper end opening of the hot water container, and the main body with the container mounting portion made smaller than the upper end opening of the hot water container facing into the container Another feature is that a predetermined amount is accommodated in contact with the upper end opening, and equipment including a power supply device can be accommodated below the predetermined amount .

In such a configuration, since the heater that can be attached to and detached from the main body is provided in the main body, in addition to the case of the above one feature, the number of individual handling parts can be reduced. , Ri preferably der etc. rattling prevention by separation of the protection and the body of the heater, in particular, contained in a predetermined amount into the container main body is accompanied abutment to the upper end opening of the kettle vessel, made stable.

In a further configuration in which the lid is fitted so that it can be attached to and detached from the upper end opening of the water heating container and the recessed portion of the stationary part of the main body,
The lid is fitted into the top opening of the water heater container to reduce heat dissipation during use and prevent foreign matter from entering, while when not in use, the main body is housed in the water heater container by fitting it into the recessed portion of the stationary part of the main body. Can be kept low.

  Further objects and features of the present invention will become apparent from the following detailed description. Each feature of the present invention can be employed alone or in combination in various combinations as much as possible.

  According to one aspect of the electric water heater of the present invention, when the main body is stored in the water heater container when not in use, the electrical equipment or the electrical equipment part exposed on the outer surface is located inside the water heater container and external force is applied. It is easy to store and carry because the overall volume when not in use is reduced compared to the overall volume that matches the capacity during use and is not bulky.

  Further, according to another feature of the electric water heater of the present invention, in addition to the case of the above one feature, there are few independent handling parts, which is advantageous for protection of the heater and prevention of rattling due to separation from the main body. It becomes easier to handle.

According to a further configuration, the main body can be accommodated in the water heater container with the container mounting portion made smaller than the upper end opening of the water heater container facing the inside of the container.
The main body can be easily accommodated in a water heater container, and the heating portion by the heater can be protected from external force even in an accommodated state where the main body is heated and exposed from the container, which is convenient for storage and carrying.

According to a further configuration, the lid is fitted so that it can be attached to and detached from the upper end opening of the water heater container and the recessed portion of the stationary part of the main body.
When not in use, the lid can be boiled and stored in a main body accommodated in a container, and the appearance can be adjusted by covering the stationary part of the main body.

  Hereinafter, embodiments of the present invention will be described in detail with reference to FIG. 1 to FIG. 6 to provide an understanding of the present invention. In addition, the following description and illustration show the specific example of this invention, Comprising: Description content of a claim is not limited.

  As shown in FIG. 1, the electric water heater of the present embodiment is a container for hot water and hot water storage that is placed so that the water heater 1, the stationary part 3 a that is placed on the support surface 2, and the water heater 1 can be attached and detached. A main body 3 having a mounting portion 3b, a heater 4 for heating the hot water container 1 placed on the container mounting portion 3b, and a lid 5 for closing the upper end opening 1a of the hot water container 1 are provided. In particular, the water heater 1 can accommodate the separated main body 3 as shown in FIG. 3 together with the electrical equipment 6 or the electrical equipment 7 including the heater 4 as shown in FIG. The water heater 1 is an aluminum single container advantageous for heat conduction from the heater 4, and the upper end opening 1a is formed by an outward edge winding portion. Although the main body 3 is made of a synthetic resin because it is excellent in moldability, heat insulation, and insulation, it is made of a phenol resin having heat resistance and flame retardancy to improve safety and durability of use. The heater 4 may be provided integrally with the main body 3 or may be provided so that a separate one can be attached or detached. However, for the purpose of heat conduction with the kettle 1, the outer case 4 a made of aluminum is used. It is assumed that the heating element 4b is accommodated therein, and is heated and heated by direct contact with the water heating container 1 as shown in FIG. The lid 5 may be a phenol resin as long as it has heat resistance.

  In such an electric water heater of this embodiment, as shown in FIG. 1, the water heater 1 containing water is placed on the container placing portion 3b of the main body 3 placed on the support surface 2 by the placing portion 3a. Heating with the heater 4 by placing the heater, for example, makes it possible to boil water in a state in which the escape of heat is suppressed by the lid 5 and entry of foreign matter is prevented. The boiled hot water can be used freely and simply by lifting the hot water container 1 from the main body 3 as shown in FIG. For such use, a spout 1b having a bowl shape is formed at the front part of the upper end opening 1a of the water heater 1, and a notch 5a for appropriately opening the spout 1b is formed at the front part of the lid 5. The hot water can be poured out with the lid 5 applied. In addition, the spout 1b also serves as a steam discharge part when boiling water with the lid 5 applied. Here, the main body 3 may be made to have a minimum size that allows the water heater 1 to be placed and heated by the heater 4 with respect to the capacity of the water heater 1. In the illustrated example, the main body 3 has a conventional structure without an exterior case. As in the case of the water heater, the overall volume in use can be slimmed down to the utmost, such as a shape and size that is substantially flush with the kettle 1 or slightly smaller than that.

  On the other hand, when the electric water heater is not used, the electric equipment 6 or the electric equipment portion 7 including the main body 3 and the heater 4 separated from the hot water container 1 can be accommodated as shown in FIG. It is possible to reduce the overall volume when not in use by the amount of use of the capacity of the kettle 1 for such accommodation, so that it is not bulky. In the illustrated example, the volume of the main body 3 is almost downsized. As a result, when not in use, the main body 3 is housed in the water heater 1 and the electrical equipment 6 or the electrical equipment 7 exposed on the outer surface thereof can be positioned inside the water heater 1 to be protected from external force. The total volume during use is reduced by, for example, about 30% with respect to the total volume corresponding to the capacity during use, and is not bulky, which is convenient for storage and carrying.

  Further, the main body 3 is integrally provided with the heater 4, and as shown in FIGS. 1 to 3, the main body 3 separated from the kettle 1 is used as an electric equipment section 7 including the heater 4 or a power supply 8 to the heater 4. It can be accommodated together with electrical equipment 6 including a power cord and the like. In this way, by providing the main body 3 with a heater that can be attached to and detached from the main body 3, in addition to the above case, it is possible to reduce the number of individual handling parts, This is advantageous for protection and prevention of rattling due to separation from the main body 3.

  Further, the hot water container 1 together with the main body 3 and the lid 5 is elongated in the front-rear direction when viewed from the plane as shown in FIG. 3, and is not further bulky as shown in FIGS. As a form, it is more convenient for storage and carrying. In conjunction with this, at the rear of the water heater 1, as shown by the solid lines in FIGS. 3, 5 (a) to 5 (c) and 6 (b), the storage position along the rear trunk of the water heater 1, FIG. 5 (a), 5 (c) and 6 (b) are provided with a movable handle 11 between the gripping positions indicated by the phantom lines, and the handle 11 is raised without being bulky during storage and not hindering storage or carrying. By grasping, the kettle 1 is supported with a good weight balance, and the posture is easily controlled so that it can be handled easily and reliably. The handle 11 can be attached to and detached from the kettle 1 and can be detached from the kettle 1 when not in use and stored in the kettle 1 together with the main body 3 and the like.

  The heater 4 is supported by being exposed to the container mounting portion 3b of the main body 3 and the water heater container 1 mounted on the container mounting portion 3b. It can be heated by direct contact. The heater 4 has an extruded aluminum shape as an exterior case 4a, and a heating element 4b is accommodated in the flat cavity 4c and sealed with a sealing material 4d. The heating case 4a is pressed up and down. The heat treatment of the heating element 4b is efficiently transmitted to the outer surface of the outer case 4a so that the water heating container 1 in contact therewith can be directly heated. As a result, according to the experiment, 500 cc of water can be boiled in about 15 minutes. Incidentally, the heating element 4b shown in the figure is a PTC heater and self-holds a constant heating temperature with respect to a set voltage, so that temperature detection and temperature management can be omitted. However, it is not limited to this. In addition, the heater 4 is mounted and sealed on a step surface 3h provided around the heater mounting recess 3g formed in the center of the upper surface of the main body 3 with a flange portion 4h projecting from the heating element built-in portion 4g of the outer case 4a. The inside and outside are sealed through a material 12. The sealing material 12 is poured into the annular seal reservoir 113 formed on the stepped surface 3h using, for example, liquid silicon (RTV), and the heater 4 is placed and solidified to adhere the heater 4 to the stepped surface 3h. At the same time, sealing can be achieved, which is advantageous in terms of assembly work. In addition, the sealing material 12 in this case has an appropriate elasticity in the solidified state, and absorbs the difference in thermal expansion between the main body 3 and the heater 4 and does not break or damage itself. And sealability can be maintained for a long time.

  Further, an uneven fitting portion 112 is provided so that the water heating container 1 can be stably placed on the container placing portion 3b of the main body 3 in which the hot water container 1 is equivalent to or slightly smaller than the trunk, and the uneven fitting portion 112 is provided. Is formed by the convex portion 3 c formed by the installation portion of the heater 4 and the concave portion 1 c at the bottom of the kettle 1. The concave portion 1c of the water heater 1 can be protected from being subjected to external force by the contact surface 1d contacting the heater 4 becoming the bottom surface of the concave portion 1c even when it is handled alone or placed outside the main body 3. Therefore, it is possible to prevent damage or deformation resulting in contact failure with the heater 4. Further, around the contact surface 1d formed by the bottom of the concave portion 1c, an annular convex portion 1e is formed which is further lowered from the peripheral wall 1c1 of the concave portion and then lowered and connected to the contact surface 1d. The pressing force between the contact surface 1d using 1e and the contact surface 1d to make the contact surface 1d an accurate flat surface is applied to improve the adhesion to the heater 4. Further, the contact surface 1d of the water heater 1 with respect to the heater 4 is connected to the bottom 1f of the outer periphery of the water heater 1 through a concave and convex shape advantageous for continuous deformation resistance by the annular convex portion 1e and the concave portion 1c. A part of the work hardening by the process of the annular convex part 1e, the pressing process or the like is also partly helped, and the flatness of the contact surface 1d and the setting direction with respect to the kettle 1 are easily maintained. Further, the peripheral wall 1c1 of the recess 1c is provided with a play S1 between the protrusion 3c of the main body 3 so as not to disturb the contact of the contact surface 1d with the heater 4, and the bottom 1f of the water heater 1 and the protrusion of the main body 3 are provided. A play S2 is also provided between the shoulder surface 3f around 3c. The heater 4 is exposed to be higher than the top surface of the convex portion 3 c of the main body 3, thereby preventing contact with the contact surface 1 d of the boiling water container 1 from the main body 3 side. The play S1 and S2 serve as a gap to be discharged as steam when there is water that has entered between the kettle 1 and the heater 4, and this gap is formed by bending so that the heater 4 On the other hand, the heater 4 can be protected because it can only be communicated from the outside through the Z-shaped passage and not straight.

  As described above, since the heater 4 receives power supply through the power supply tool 8, as shown in FIGS. 1 and 3, the power supply connection port that opens rearward at the rear portion opposite to the spout 1 b of the main body 3. 13 is provided. Therefore, it is easy to prevent the hot water poured out from the spout 1b or the condensed water of steam from reaching the power connection port 13. As shown in FIG. 1, the power connection port 13 is equipped with a magnet connector 14 as an electrical equipment portion 7 and is connected to a power receiving terminal 15 of the heater 4. As a result, by connecting the power supply 8 connected to a household power source (not shown) to the magnet connector 14, the heater 4 of the electric water heater is energized, and the water heating starts. However, in that case, there is no guarantee that the water heater 1 is placed, which is dangerous.

  In order to cope with this, in the present embodiment, in addition to providing the main body 3 with the pilot lamp 10 indicating energization, the container detector protruding from the front portion of the shoulder surface 3f of the main body 3 by the bias of the spring 21. When the container detection switch 23 detects that the water heater 1 is attached and the container detector 22 is pushed down against the spring 21, the control circuit on the control board 24 can be energized. The control board 24 can also cope with the difference in the household power supply between 100V and 200V. However, since the proper use is not achieved only by placing the kettle 1, it is better to set the pushing force for the container detector 22 to be energized by the container detection switch 23 by adding the weight of the lid 5. Furthermore, it is preferable to set by adding the weight of an appropriate remaining amount of the content liquid that does not become empty.

  Moreover, the main body 3 is configured so that the container mounting portion 3b, which is smaller than the upper end opening 1a of the water heater container 1 as shown in FIGS. 1 to 3, can be accommodated in the water heater container 1 as shown in FIG. ing. If it does in this way, it will be easy to accommodate the container mounting part 3b of the main body 3 facing the inside of a container, and storing in the container 1 because the container mounting part 3b is smaller than the upper end opening 1a of the boiling water container 1. The main body 3 is heated by the heater 4 of the water heater 1 while keeping the stationary portion 3a outward so that there is no problem with external force even in the accommodated state in which the main body 3 is partially exposed from the water heater 1 as shown in FIG. The intended container placement portion 3b can be protected from external force toward the inside. The stationary part 3a of the main body 3 is slightly larger than the upper end opening 1a of the water heater 1 and has a step part 3j between the container mounting part 3b and the step part 3j when the main body 3 is accommodated in the water heater 1. A predetermined amount is stably accommodated in the water heater 1 by contacting the upper end opening 1 a of the water heater 1. As a result, it is possible to prevent the main body 3 from dropping off due to insufficient accommodation amount, that is, insufficient fitting amount at the time of accommodation, or a part of the electrical equipment portion 7 having the magnet connector 14 exposed to receive external force. it can. Further, when the main body 3 is accommodated in the water heater 1, the electrical equipment portion 7 having the magnet connector 14 being covered by the water heater 1 means that the power supply 8 cannot be connected, and such accommodation is not possible. It is also possible to prevent a danger that power is supplied to the main body 3 in the state. When the main body 3 is heated and accommodated in the container 1, a simple or sufficient sealing structure can be satisfied between the two so that any remaining liquid leaks when carrying it. Can be prevented. Further, depending on the fitting state, the main body 3 can be boiled and frictionally held in the state of being accommodated in the container 1 or can be elastically locked, thereby further preventing dropout.

  Further, the lid 5 is detachably fitted to the upper end opening 1a of the water heater 1 as shown in FIG. 1 and the recess 31 of the stationary part 3a of the main body 3 as shown in FIG. As a result, the lid 5 is boiled and fitted into the upper end opening 1a of the container 1 as shown in FIG. 1 to suppress heat dissipation during use and prevent foreign matter from entering, while the stationary part 3a of the main body 3 when not in use. 2 is fitted into the concave portion 31 as shown in FIG. 2 so that it can be stored in the main body 3 accommodated in the kettle 1 in a bulky manner, and a holding force to the accommodated state can be obtained. At the same time, the stationary part 3a of the main body 3 can be covered and protected by the lid 5 and the appearance can be adjusted. In addition, the lid 5 is provided with a knob portion 32 as shown in FIGS. 1, 2 and 3 in the center of the lid 5 together with the surrounding recess portion 32a for convenient attachment and detachment. When fitting into the recess 31, the auxiliary recess 31 a and the knob portion 32 shown in FIGS. 1 and 4 provided at substantially the center of the recess 31 are fitted together with the recess portion 32 a, so that the knob portion 32 is back of the lid 5. This prevents the protrusion from becoming a cause of bulkiness during storage. The fitting between the knob portion 32 and the concave portion 31 can be a positioning portion that regulates the accommodation position of the lid 5 depending on the fitting state. However, in this embodiment, the peripheral wall 5b that fits with a slight gap inside the upper end opening 1a of the water heater 1 is provided on the lid 5, and the water heater 1 is provided at a plurality of locations on the outer surface of the peripheral wall 5b in the circumferential direction. A rib 33 that is lightly slidably or pressure-contacted to the upper end opening 1a is provided to hold the lid 5 in a state where it is attached to the kettle 1 and in particular in close contact with the upper end opening 1a. In other cases, steam is prevented from going outside. Thereby, the danger that vapor | steam is discharged | emitted from an unexpected part can be prevented. Therefore, when the lid 5 is accommodated in the recess 31 of the stationary portion 3a of the main body 3, the ribs 33 are lightly applied to the recesses 34 provided at several locations in the circumferential direction of the inner periphery of the recess 31 shown in FIGS. At the same time as the sliding contact or the pressure contact and the mutual positioning, the housing 3 is held in the accommodated state. In addition, in order to avoid inadvertent separation at the time of carrying, the accommodation state can be stably maintained by fastening the belt to the accommodation state shown in FIG.

  The stationary portion 3a of the main body 3 is formed around the lower portion of the stationary portion 3a by integrally forming the leg portions 41 at a plurality of locations in the circumferential direction of the peripheral wall so as to place the main body 3 with a little play S3 on the support surface 2. Improves ventilation and prevents heat from burning. The leg 41 has a contact for providing play S3 with the lid 5 when the lid 5 is accommodated in the concave portion 31 of the stationary portion 3a of the main body 3, and the heater 4 is cooled down immediately after use. It is effective in promoting heat dissipation in the case where there is no such thing. A metal heat shield plate 42 that forms the bottom plate of the recess 31 is provided inside the stationary portion 3a of the main body 3, and the auxiliary recess 31a is formed in this. One place at the bottom of the heater mounting recess 3g of the container mounting portion 3b of the main body 3 passed through a predetermined position from which a portion that should avoid moisture such as the electric equipment portion 7 including the control board 24 in the main body 3 was removed. A drain outlet 43 for draining water is provided, and a flow gradient from the entire bottom of the heater mounting recess 3g is set, so that water may intrude into the heater mounting recess 3g due to a seal failure or seal failure. However, it collects at the drain outlet 43 and allows the drainage through a drain path 44 continuous to the drain outlet 43 through a path having no problem. The drainage channel 44 reaches the heat shield plate 42 and flows out to the outside through a through hole 45 provided in the heat shield plate 42, and the play S3 between the leg portion 41 and the support surface 2 is as described above. There is an advantage that when there is drainage, the main body 3 side is not affected, and the body 3 is removed without being affected. Further, the main body 3 is shielded between the heater 4 and the support surface 2 from the heat insulating space 51 formed by the heater mounting recess 3g, the heat insulating space 52 between the bottom of the heater mounting recess 3g and the control board 24, the control board 24, and the like. The heat insulation space 53 between the heat plate 42 and the heat insulation space 54 between the heat shield plate 42 and the support surface 2 have multiple heat insulation spaces, and the heat of the heater 4 reaches the support surface 2 side specially. It is made possible to prevent sufficiently with a structure without any other members.

  Further, a positioning pocket 61 is formed in the vicinity of the drainage port 43 between the heater 4 and the heater mounting recess 3g, and a base 62a of the ground contact piece 62 is sandwiched between the positioning pocket 61 and the ground contact piece 62 is connected to the drainage channel 44. The lower end 62b of the ground contact piece 62 is pressed against the heat shield plate 42 by securing the necessary amount of protrusion to the lower portion through the screw, and the heat shield plate 42 is screwed by the screw 63. A ground wire (not shown) connected to the outside can be reliably grounded around the outside. A hook 62c is provided between the base 62a and the lower end 62b of the ground contact piece 62 so as to be elastically hooked to the lower end of the drainage channel 44 and sandwiched between the base 62a and the main body 3. 62 can self-maintain the position and state in which the base 62a is clamped between the heater 4 and the heater mounting recess 3g, and the clamping operation can be achieved easily and reliably.

  As shown in FIG. 3, the handle 11 is supported on a handle base 73 made of phenol resin attached with a screw 72 to a fitting 71 attached by welding or the like to the kettle 1 as shown in FIG. The leg portion 11a made of a metal wire is formed on the handle base 73 so that it can move up and down elastically over the locking projection 74 between the position of the solid line state and the position of the phantom line state. It connects with the grip part 11b which consists of resin, or is covered with the grip part 11b, and it can grip now without the thermal influence from the water heater 1 side. Further, if the portion of the handle base 73 facing the gripping portion 11b is opposed to a concave-convex surface such as a rib-shaped convex portion 75 as shown by phantom lines in FIG. Even if the temperature is raised to a relatively high temperature due to the thinness, the contact with the hand that grips the gripping portion 11b is only in a limited range such as a linear shape, so the user's passion is reduced. In addition, such a situation can be made difficult to invite.

  In the example shown in FIG. 7, a buckle 81 made of a metal wire as shown in FIG. 7 (c) is placed on the container mounting portion 3 b of the main body 3 as shown in FIGS. The central locking portion 81b of the buckle 81 is attached to the hook member 83 which is attached elastically so as to be able to rotate in the outer peripheral recess 82 and welded to the lower surface of the bottom portion 1f of the water heater 1 corresponding thereto. By being elastically latched, the kettle 1 is forcibly brought into close contact with the heater 4 and at the same time is locked in a state of being placed on the main body 3. Thereby, heating efficiency improves with the buckle structure which does not protrude to the side peripheral surface of the kettle 1 and the main body 3, and the careless separation and dropping-off of the kettle 1 and the main body 3 can be prevented.

  In the example shown in FIG. 8, a buckle 85 pivotally supported by a shaft 84 is provided on the side of the main body 3, and is elastically engaged with a handle 86 pivotally supported so as to be able to undulate around the body portion of the kettle 1. The hot water container 1 is forcibly brought into close contact with the heater 4 and at the same time is locked in the mounting state on the main body 3. The handle 86 is made of a metal wire and can be engaged using elasticity on the handle 86 side, and the buckle 85 side can be made of a material that is difficult to obtain elasticity, such as resin or a thick metal plate. In addition, since the handle 86 is not in the state of handling the water heater container 1 unless the locking is released, the water heater container 1 is handled by the handle 86 without being separated from the main body 3, and the load of the handle 86 becomes excessive and damaged. Can be avoided. The buckle 85 may be engaged with the handle 86 in a sliding manner and may be released.

  In the example shown in FIG. 9, in the container mounting portion 3 b of the main body 3, the heating element 4 b is sandwiched between upper and lower outer casings 4 a made of two metal plates and screwed with screws 87. 4a is fixed to the main body 3 as a heater 4 in a state of sandwiching a heating element 4b, and the container mounting portion 3b is configured. At the same time, the water is boiled at the front portion of the container mounting portion 3b and fixed to the bottom 1f of the container 1 by welding. 9B is provided at the rear part of the main body 3 so as to engage with the engaging claws 88 and engage the water heater 1 at the position where it contacts the heater 4 on the front side. By pulling out from the storage position in the main body 3, as shown in FIG. 9A, the water heating container 1 is engaged with the locking portion 91 on the side of the water heating container 1 to contact the water heating container 1 with the heater 4 on the rear side. A buckle 92 is provided to be locked to. The buckle 92 includes a slide base 92b having a retaining portion 92a from the main body 3, and a buckle portion 92c pivoted at the protruding end to the outside of the slide base 92b and undulating at the pull-out position. In addition to forcibly bringing the container 1 into contact with the heater 4, the container 1 can be locked in the mounting state on the main body 3. The locking portion 91 is formed integrally with a part of the handle base 73 of the kettle 1. When the buckle portion 92c is disengaged from the locking portion 91, the buckle portion 92c is aligned with the slide base portion 92b and can be stored as shown in FIG.

  In the example shown in FIG. 10, when the buckle base 92 c is disengaged from the locking portion 91 and the kettle 1 is disconnected from the main body 3, the buckle base 92 c is rotated to the downward storage position to engage the main body 3. It engages with the stop 93 and is kept stable.

  In the example shown in FIG. 11, as shown in FIGS. 11A and 11B, an auxiliary recess 1 j is provided in the center of the recess 1 c of the water heater 1, and a bottom plate 101 made of a metal plate is covered thereon to be soldered. The bottom plate 101 is provided with a plurality of daruma-shaped coupling holes 102 facing in the circumferential direction as shown in FIGS. 11 (a) and 11 (b). A plurality of coupling pins 103 protruding upward from 4 a are provided at positions corresponding to the coupling holes 102. When the hot water container 1 is placed on the container mounting part 3 b of the main body 3, the expanded part 102 a of the coupling hole 102 is fitted into the enlarged head 103 a of the coupling pin 103, and then the hot water container 1 is rotated. Thus, the hot water container 1 is forcibly brought into contact with the heater 4 and is coupled to the main body 3 by being guided to the engaging portion 102b in which the coupling pin 103 is narrow and the head portion 103a of the coupling pin 103 rides elastically. Stabilize to the state. The forced contact and coupling are released by the reverse operation of this, and the kettle 1 can be separated from the main body 3.

  The heater 4 is integrated with the upper and lower aluminum plates sandwiching the heating element 4b by caulking with the connecting pin 103 to form an outer case 4a and at the same time to be in close contact with the heating element 4b. Note that the outer periphery of the two aluminum plates is sealed with a seal packing 111.

  The present invention is practically used for a simple electric water heater, and is convenient and easy to use and store.

It is sectional drawing which shows the use condition of the electric water heater of this invention. It is sectional drawing which shows the non-use state of the electric water heater of FIG. It is a disassembled perspective view of the electric water heater of FIG. It is a perspective view which shows the upside down state of the main body of the electric water heater shown in FIG. It is the side view, back view, and top view of the electric water heater shown in FIG. It is the front view and bottom view of the electric water heater shown in FIG. The other example of an electric water heater is shown, The (a) is a fragmentary sectional view, (b) is a side view, (c) is a perspective view of a buckle. It is a perspective view which shows the other example of an electric water heater. An example of an electric water heater is shown, in which (a) is a partial cross-sectional view, and (b) is a cross-sectional view showing a state change of (a). Still another example of the electric water heater is shown, in which (a) is a partial cross-sectional view, and (b) is a cross-sectional view showing a state change of (a). Still another example of the electric water heater is shown, in which (a) is a partial cross-sectional view and (b) is a bottom view of a part of a water heater.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Water heater 1a Upper end opening 2 Support surface 3 Main body 3a Stationary part 3b Container mounting part 4 Heater 5 Lid body 6 Electrical equipment 7 Electrical equipment part 31 Recessed part

Claims (3)

A water heater container, a stationary part that is placed on the support surface, a main body having a container placing part that is placed so that the water heater can be attached and detached and used for boiling water or storing hot water, and a water heater container that is placed on the container placing part And a lid that closes the upper end opening of the water heating container, and the main body stores a predetermined amount in the water heating container with the container mounting portion smaller than the upper end opening of the water heating container facing the inside of the container. An electric water heater characterized by having a storage space below . A water heater container that performs water heating and storage, a stationary part that is placed on a support surface, a container mounting part that is placed so that the water heating container can be attached and detached, and a water heating container placed on the container mounting part are heated to heat the water. A main body with a heater to be performed, a lid for closing the upper end opening of the water heater container, and the main body, with the container mounting portion made smaller than the upper end opening of the water heater container facing the inside of the container, contact with the upper end opening The electric water heater is characterized in that a predetermined amount is accommodated and equipment including a power supply device can be accommodated therein. The electric water heater according to any one of claims 1 and 2 , wherein the lid is fitted so as to be detachable from an upper end opening of the water heater container and a recessed portion of the stationary part of the main body.

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