Cooking water heater

Abstract

To provide a water boiler for cooking from which liquid having entered a lid body can be easily removed.SOLUTION: A water boiler for cooking comprises a container body comprising an opening in the upper part, a lid body 7 for closing the opening of the container body, and a heating device for heating the container body placed thereon. The lid body 7 comprises a bottom plate 70 and a top plate 72. The top plate 72 comprises a through hole 720a communicating with an internal space formed by the bottom plate 70 and the top plate 72. The bottom plate 70 comprises a guide part 709 for guiding liquid 8 in the internal space to the side of the through hole 720a.SELECTED DRAWING: Figure 7

Description

[Technical field]

[0001] The present invention relates to a water boiler for cooking that is capable of boiling water and cooking ingredients at the same time. [Background technology]

[0002] As a water heater, the following has been disclosed (for example, Patent Document 1): "An electric hot water storage container comprising a container body 1 having an inner container 3 for storing hot water, a heating means 4 for heating the water in the inner container 3, a lid body 2 which is detachable from the container body 1, and a pump device arranged on the side of the container body 1 for pouring the liquid in the inner container 3 to the outside, wherein the lid body 2 is configured so as to be disassembled into a number of components which can be washed completely (for example, an upper lid plate 11, a lower lid plate 12, and an inner lid 13), and by disassembling the lid body 2 into the multiple components with the lid body 2 removed from the container body 1, each of the components can be washed completely." [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2002-102065 A Summary of the Invention [Problem to be solved by the invention]

[0004] In the case of the water heater described above, if water gets into the lid, the lid can be disassembled and the water can be removed, but this requires a lot of work. Furthermore, with the above-mentioned lid, it is possible that the removed inner lid 13 may be forgotten to be attached when the lid is reassembled, and if the container is used in this condition, steam may leak and the steam may cause the plastic lid to deteriorate more quickly. An object of the present invention is to provide a water heater for cooking that can easily remove liquid that has entered the lid. [Means for solving the problem]

[0005] The cooking water heater of the present invention comprises a container body having an opening at the top, a lid body that covers the opening of the container body, and a heating device that heats the container body when placed on it, the lid body having a bottom plate and a top plate, the top plate having a through hole that communicates with the internal space formed by the bottom plate and the top plate, and the bottom plate having a guide portion that guides liquid in the internal space toward the through hole. Effect of the Invention

[0006] According to the above-mentioned configuration, the liquid inside the lid can be easily removed. [Brief description of the drawings]

[0007] [Figure 1] 1A and 1B are perspective views of a cooking water heater according to an embodiment, seen from above, in which (a) shows a state in which a container is placed on a heating device, and (b) shows a state in which the container is removed from the heating device. [Diagram 2] 1A and 1B are perspective views of the container body with the lid removed, where FIG. 1A is a view from below, and FIG. [Diagram 3] FIG. [Figure 4] FIG. 2 is a block diagram of a heating device. [Diagram 5] FIG. 2 is an exploded perspective view of the lid body, with a portion enlarged. [Figure 6] 1A is an oblique view of the cross section near the water drainage through hole seen from above, FIG. 1B is an oblique view of the cross section near the water drainage through hole seen from below, FIG. 1C is an oblique cross-sectional view of the interior seen from the inside, and FIG. 1D is an oblique cross-sectional view of the interior seen from the outside. [Figure 7] FIG. 13 is a diagram illustrating drainage of water from inside the lid. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0008] <Summary> A first cooking water heater according to one aspect of the embodiment includes a container body having an opening at an upper portion, a lid body for closing the opening of the container body, and a heating device for heating the container body placed thereon, the lid body includes a bottom plate and a top plate, the top plate has a through hole communicating with an internal space formed by the bottom plate and the top plate, and the bottom plate has a guide portion for guiding liquid in the internal space toward the through hole, thereby making it easier to guide the liquid in the internal space to the through hole. In a second cooking water heater according to another aspect of the embodiment, in the first cooking water heater, the guide portion is provided on an inclined portion that decreases the distance from the top plate toward the through hole, thereby making it easier to drain liquid in the internal space. A third cooking water heater according to another embodiment is the first or second cooking water heater, wherein the bottom plate and the top plate have an engagement portion for engaging with each other, thereby allowing the bottom plate and the top plate to be joined with each other with a simple structure. A fourth cooking water heater according to another embodiment is the third cooking water heater, in which the through hole and the guide part face each other in the thickness direction of the lid, the through hole is provided near the engagement part of the top plate, and the engagement part of the bottom plate is provided in the guide part. This eliminates the need to take the trouble of providing a guide member, and can be implemented at low cost. A fifth cooking water heater according to another embodiment is the third or fourth cooking water heater, wherein the engaging portion of the bottom plate has a rib portion extending toward the top plate and a through hole formed in the rib portion, the engaging portion of the top plate engages with the through hole formed in the rib portion from the side opposite the center of the top plate, and the through hole communicating with the internal space of the top plate is provided on the side opposite the center of the top plate with respect to the engaging portion of the top plate. This makes it easier to drain liquid in the internal space.

[0009] <Embodiment> 1. Overall structure As shown in Fig. 1, the cooking water heater X includes a heating device 1 and a container 3. The container 3 is placed on the heating device 1, and is heated to cook ingredients in the container 3 or to warm liquids such as water and soup. In other words, it is possible to not only boil water, but also to heat and cook ingredients. Each part will be explained below.

[0010] 2.Heating device As shown in Figures 1 and 3, the heating device 1 comprises a housing 10 having an opening on the top surface, a heating unit 11 arranged to fit into the opening of the housing 10, a control unit 12 that controls the heating unit 11, an operation display unit 13 having an operation section 131 and a display section 133, a power supply unit 14 that supplies power to the heating unit 11, the control unit 12, the operation display unit 13, etc., and a connection unit 15 that connects to a power cord 17.

[0011] (1) Housing Here, the housing 10 has a hollow cylindrical shape and houses the heating unit 11 and the like inside. The housing 10 has an opening for the connection unit 15 in the peripheral wall, and the connection unit 15 is provided in the opening. The housing 10 has a communication hole 10a that allows air to flow between the inside and the outside.

[0012] (2) Heating unit The heating unit 11 includes a heater 111, a heating plate 112 that holds the heater 111, and a fixing plate 113 to which the heating plate 112 is attached and which is fixed to the housing 10. Here, the heating plate 112 has an annular shape with a through hole 112a in the center, and the heater 111 is arranged in a spiral or annular shape. The heating device 1 includes a first temperature sensor 161 that detects a temperature corresponding to the temperature of the container 3 placed on the heating unit 11 , and a second temperature sensor 163 that detects a temperature corresponding to the temperature of the heater 111 . The first temperature sensor 161 is disposed in the through hole 112a of the heating plate 112 and is provided on the movable member 114 supported so as to be able to protrude and retract above the heating plate 112. That is, the first temperature sensor 161 detects the temperature of the movable member 114 in contact with the container 3 or the temperature of the air inside the movable member 114 as a temperature corresponding to the temperature of the container 3. The movable member 114 has a cylindrical shape with a lid and has a bent portion that is bent radially outward from its open end. The bent portion is of a size that does not allow it to pass through the through hole 112a. The movable member 114 is supported by a coil spring 115, the lower end of which is supported by a fixed plate 113, so as to be movable up and down. The second temperature sensor 163 is provided on the side of the fixed plate 113. That is, the second temperature sensor 163 detects the temperature of the fixed plate 113 in contact with the heating plate 112 that houses the heater 111 or the temperature of the mounting plate 116 attached to the fixed plate 113, as a temperature corresponding to the temperature of the heater 111. The lower end of the coil spring 115 is attached to the fixed plate 113 via a mounting plate 116. Here, the processed mounting plate 116 is fixed to the fixed plate 113 in consideration of the workability of the support portion that supports the coil spring 115.

[0013] (3) Control unit The control unit 12 drives the heating unit 11 in response to the user's operation, executes a program corresponding to the cooking content selected by the user, stops the driving of the heating unit 11 when the temperature of the container 3 reaches or exceeds a set value, etc. This enhances the safety of the heating device 1. In addition, since cooking is automatically performed according to the content selected by the user, it is easy to use and allows the user to cook well. The control unit 121 heats the heater 111 when a container detection sensor 165, which detects whether or not a container 3 is placed on the heating plate 112, detects that a container 3 is placed. Here, a reed switch may be used as the container detection sensor 165, and when the placement of the container 3 is detected, electricity is applied to activate the control unit 121. This makes it possible to improve safety with a simple configuration. As shown in FIG. 4, the control unit 12 includes at least a control unit 121 composed of a microcomputer or the like, a memory unit 123 that stores programs and various data corresponding to a plurality of automatic cooking menus in advance, and a timer 125 for counting time. The control unit 12 is composed of a plurality of electronic components, and the electronic components are mounted on a board 143 of the power supply unit 14 (see FIG. 3). When the temperature detected by the first temperature sensor 161 becomes higher than the first temperature or equal to or higher than the first temperature while the heating unit 11 is being driven, the control unit 121 stops heating (driving) the heater 111, and when the temperature detected by the second temperature sensor 163 becomes higher than the second temperature or equal to or higher than the second temperature, the control unit 121 stops heating (driving) the heater 111. This ensures safety even if the first temperature sensor 161 or the second temperature sensor 163 does not operate for some reason. Here, the first temperature, which is the set value of the first temperature sensor 161, is lower than the set value of the second temperature sensor 163. As a result, even if the container detection sensor 165 detects something other than the container 3 as a container, for example, the heater 111 will not continue to be driven, thereby improving safety.

[0014] (4) Operation display section 1(a), the operation unit 131 is composed of, for example, a plurality of buttons, etc. By selecting a button on the operation unit 131, the user can boil water, cook by appropriately setting the temperature and time, or select a pre-registered cooking menu and automatically cook according to a program corresponding to the selection. The display unit 133 displays the time, temperature, etc., and notifies the user that the device is in operation. The operation unit 131 and the display unit 133 are mounted on, for example, a substrate 135, and are provided on a protruding portion of the peripheral wall of the housing 10 with the operation unit 131 and the display unit 133 exposed on the front side.

[0015] (5) Power supply unit The power supply unit 14 generates driving power for the heater 111, the control unit 12, the operation display unit 13, etc. from a commercial power source. The power supply unit 14 has a plurality of electronic components 141 and a board 143, and is fixed to the housing 10 in a state where it is housed in a circuit case 145.

[0016] (6) Connection unit Power cord 17 connected to connection unit 15 has a power plug (not shown) at one end of cord 171 and a magnetic plug 173 at the other end of cord 171. For this reason, connection unit 15 utilizes a magnetic plug receptacle to which magnetic plug 173 is detachably connected.

[0017] 3. Container As shown in FIG. 2, the container 3 includes a container body 5 having an opening 51a at the top, and a lid 7 that closes the opening 51a of the container body 5. Each part will be explained below.

[0018] (1) Container body 2(b), the container body 5 has at least a bottomed, cylindrical container portion 51. The container body 5 has a handle portion 52 for carrying the container body 5 or changing its orientation. The container body 5 has a bulging portion 511 that bulges out toward the heating device 1 (downward) at the bottom of the container part 51, and has an annular groove part 54 formed with an annular body 53 attached to the outer periphery of the bulging portion 511. The groove part 54 fits into the annular protrusion part 103 of the heating device 1 shown in FIG. 1(b). This positions the container body 5 in the radial direction with respect to the heating device 1. As shown in (a) of Fig. 2, the annular body 53 has recessed portions 531 that recess outward in the radial direction at opposing positions across the center. The recessed portions 531 fit into the protruding portions 105 that protrude outward in the radial direction from the protruding stripe portions 103 of the heating device 1 shown in (b) of Fig. 1. This positions the container body 5 in the circumferential direction relative to the heating device 1. In addition, a magnet for a reed switch, which is a container detection sensor 165, is disposed at a predetermined position on the annular body 53. The container body 5 has a spout portion 55 that projects outward in the radial direction on the upper end side opposite the handle portion 52 with respect to the center of the container portion 51 .

[0019] (2) Lid The lid body 7 includes at least a bottom plate 70 and a top plate 72. In addition to the bottom plate 70 and the top plate 72, the lid body 7 includes a packing 74, and a knob body 76 on the top plate 72, as shown in FIG. The bottom plate 70 and the top plate 72 are circular, and the packing 74 is annular. The bottom plate 70 and the top plate 72 are joined vertically with the packing 74 sandwiched therebetween so that a space is formed inside (hereinafter, referred to as the "internal space"). By having the internal space, the weight of the lid 7 can be reduced, and a temperature rise due to heat transfer from the container body 5 can be suppressed. In the following, in describing the configurations of the bottom plate 70 and the top plate 72, for convenience in order to easily distinguish between the two, the configuration on the bottom plate 70 side may be referred to as "bottom" or "bottom side," and the configuration on the top plate 72 side may be referred to as "top" or "top side." The bottom plate 70 and the top plate 72 are joined together by an engagement structure, that is, the bottom plate 70 has a plurality of bottom-side engagement portions 702, and the top plate 72 has a plurality of top-side engagement portions 722, which engage with each other. Top plate 72 has a through hole communicating with the internal space, and bottom plate 70 has a guide portion 709 that guides liquid in the internal space to through hole 720a of top plate 72. These are provided, for example, at a position corresponding to spout portion 55 of container body 5 and face each other in the thickness direction of lid 7. The through hole 720a and the guide portion 709 are provided using one of the multiple bottom side engagement portions 702 and top side engagement portions 722, and the reference numerals of the bottom side engagement portion 702 and top side engagement portion 722 that are related to the through hole 720a and the guide portion 709 are marked with "A", and the reference numerals of the bottom side engagement portion 702 and top side engagement portion 722 that are not related are marked with "B".

[0020] (2-1) Bottom plate The bottom plate 70 has a circular bottom plate portion 700 and a peripheral bottom plate portion 701 extending upward from the peripheral edge of the bottom plate portion 700 . As shown in FIG. 2, the bottom plate 700 has a recessed portion 700a and a protruding portion 700b in a portion corresponding to the spout portion 55 of the container body 5. The recessed portion 700a is configured, for example, so that the amount of recession increases as it moves away from the center in the radial direction and gradually expands in the circumferential direction. In other words, the recessed portion 700a can be said to be an inclined portion in which the distance from the top plate 72 decreases as it approaches the through hole 720a. The protruding portion 700b protrudes in a triangular shape radially outward from the outer periphery of the recessed portion 700a. The protruding portion 700b is provided with a plurality of through holes 700c for draining water. As shown in FIG. 5, the bottom plate portion 700 has at its center a boss portion 700d having a screw hole into which a screw 765 for fixing the knob body 76 to the top plate 72 is screwed.

[0021] The bottom side engagement parts 702A, 702B are provided at intervals in the circumferential direction on the peripheral side of the bottom plate part 700. The bottom side engagement parts 702A, 702B are composed of a bottom side extension part extending from the bottom plate part 700 toward the top plate 72 side, and a recess or a through hole formed in the bottom side extension part. Here, the bottom side extension part is composed of plate-shaped bottom rib parts 703A, 703B, and through holes 704A, 704B are formed in the bottom rib parts 703A, 703B. The bottom rib portions 703A, 703B are provided so as to extend along the circumferential direction of the bottom plate portion 700, and rectangular through holes 704A, 704B that are long in the circumferential direction are provided in the central portions of the bottom rib portions 703A, 703B in the circumferential and vertical directions.

[0022] As shown in the enlarged view C of Fig. 5, the bottom rib portion 703A has a pool of water on the lower side of the through hole 704A. That is, the peripheral portion of the bottom rib portion 703A around the through hole 704A is positioned so as to protrude toward the center in the radial direction due to the step portions 705A on both sides in the circumferential direction of the through hole 704A, and the lower portion 706A of the through hole 704A is positioned radially outward of the upper portion 707A of the through hole 704A. As a result, the lower portion 706A is recessed into the inner surfaces (surfaces toward the center) of the step portions 705A on both sides in the circumferential direction, and the pool of water is formed in the recessed portion. The bottom plate 70 has connecting portions 708A that connect the bottom rib portion 703A and the bottom peripheral plate portion 701 on both sides in the circumferential direction of the through hole 704A. The connecting portions 708A are formed of plate-shaped ribs extending in the radial direction. This makes it possible to restrict the liquid that has flowed over the lower portion 706A of the bottom rib portion 703A via the through hole 704A from flowing in the circumferential direction. The connecting portion 708A is notched at the radially outer side and the upper side so as not to interfere with the inner peripheral portion 744 (see FIGS. 6(a) and 6(b)) of the packing 74. The inner surface of the recessed portion 700a and the bottom peripheral portion 701 located between the pair of connecting portions 708A are smoothly formed so that the liquid in the space surrounded by the pair of connecting portions 708, the recessed portion 700a, and the bottom peripheral portion 701 flows smoothly toward the through-hole 720a due to the inclination of the lid body 7. As shown in enlarged view D of FIG. 5, bottom rib portion 703B is positioned such that upper portion 707B of through hole 704B projects radially toward the center due to stepped portions 705B on both circumferential sides of through hole 704B. The bottom plate 70 has connecting portions 708B that connect the bottom rib portion 703B and the bottom peripheral plate portion 701 on both circumferential sides of the through hole 704B. The connecting portions 708B are formed of plate-shaped rib portions extending in the radial direction.

[0023] (2-2) Tabletop The top plate 72 has a circular top plate portion 720 and a top peripheral plate portion 721 extending downward from the peripheral edge of the top plate portion 720 . 2, top plate portion 720 has through hole 720a at a position corresponding to spout portion 55 of container body 5 and close to spout portion 55. Through hole 720a is for draining liquid that has entered the internal space to the outside, and faces recessed portion 700a of bottom plate 70. The top plate portion 720 has a recessed portion 720b in the center that recesses downward, a through hole for a screw 765 for fixing the knob body 76, and a cylindrical portion 720c that fits onto the outer periphery of the boss portion 700d of the bottom plate 70.

[0024] The top engaging portions 722A, 722B are provided at intervals in the circumferential direction on the peripheral edge side of the top plate portion 720. The top engaging portions 722A, 722B are composed of a top extending portion extending from the top plate portion 720 toward the bottom plate 70, and a convex portion formed on the top extending portion. Here, the top extending portion is composed of plate-shaped top rib portions 723A, 723B, and convex portions 724A, 724B are formed at the tips of the top rib portions 723A, 723B so as to protrude radially inward. The convex portions 724A, 724B fit into the through holes 704A, 704B of the bottom plate 70, whereby the bottom engagement portions 702A, 702B and the top engagement portions 722A, 722B engage with each other. Note that the extension amount of the top rib portion 723A is less than the extension amount of the top rib 723B due to the recessed portion 700a of the bottom plate 70.

[0025] The top rib portions 723A, 723B are provided so as to extend along the circumferential direction of the top plate portion 720, and have a pair of auxiliary rib portions 728A, 728B extending radially (e.g., outward) at both ends in the circumferential direction. This enables the top rib portions 723A, 723B to be reinforced. In addition, when the bottom plate 70 and the top plate 72 are joined together, the top rib portions 723A, 723B are located radially outward of the bottom rib portions 703A, 703B and between the pair of connecting portions 708A, 708B. This restricts the position of the top plate 72 relative to the bottom plate 70 in the circumferential and radial directions. 6(a) and 6(b), the top rib portion 723A is located radially inward of the through hole 720a. Here, the top rib portion 723A is provided close to the through hole 720a. As shown in Fig. 5, the top plate 72 has a pair of second extension portions 729 extending downward on both circumferential sides of the top rib portion 723A. The pair of second extension portions 729 are provided at a distance in the circumferential direction from the top rib portion 723A. The end faces of the pair of second extension portions 729 on the top rib portion 723A side are provided so as to abut or be close to the outer surfaces in the circumferential direction of the pair of connecting portions 708A, as shown in Fig. 6(c) and (d). This allows the top plate 72 and the bottom plate 70 to be positioned in the circumferential direction with high accuracy, making it easier for the liquid inside to drain. The pair of second extension portions 729 are, for example, "L" shaped in a cross section perpendicular to the extension direction. As shown in Fig. 5, the pair of second extension portions 729 have an inclined portion 729a at their extension tips (lower ends) on the top rib portion 723A side. The inclined portion 729a is inclined so as to move away from the top rib portion 723A as it moves downward. This guides the convex portion 724A of the top plate 72 to fit into the through hole 704A of the bottom plate 70 when the top plate 72 and the bottom plate 70 are brought closer to each other.

[0026] (2-3) Gasket 5 and 6(a) and (b), the packing 74 has a main body 741 having a fitting groove 740 into which the bottom peripheral plate portion 71 of the bottom plate 70 fits from below, and a folded-back portion 743 folded back radially outward from the lower end of an outer periphery 742 of the main body 741. The top peripheral plate portion 721 of the top plate 72 faces the outer periphery of the outer periphery portion 742, as shown in FIG.

[0027] (2-4) Knob body 5, the knob body 76 has a large diameter portion 761 at an upper portion and a small diameter portion 763 at a lower portion. The large diameter portion 761 is detachable from the small diameter portion 763, and the small diameter portion 763 has through holes for receiving screws 765 for fixing the knob body 76 to the bottom plate 70 and the top plate 72. The gripping body 76 is attached to a recessed portion 720b in the center of the top plate 72. This makes it possible to easily grip the gripping body 76 while keeping the height of the container 3 and the lid body 7 low.

[0028] 4. How to drain liquid The method for draining the internal liquid will be described with reference to FIG. As shown in FIG. 7(a), liquid 8 is present in the bottom plate portion 700 of the bottom plate 70 within the internal space of the lid body 7 in the horizontal position.

[0029] To drain the liquid 8, as shown in (b) of FIG. 7, the lid 7 is tilted so that the through-hole 720a of the top plate 72 faces downward. This causes the liquid 8 to move through the through-hole 704A toward the bottom peripheral plate portion 701 as indicated by arrow A. At this time, the recessed portion 700a is curved (slightly recessed) so that its circumferential central portion, i.e., the region connecting the center of the bottom plate portion 700 and the circumferential central position of the through-hole 704A, is the lowest in the circumferential direction, and therefore the liquid 8 in the internal space passes through the curved portion and heads toward the through-hole 704A. Furthermore, by tilting the lid 7, the liquid 8 that has reached the lower portion 706A located below the through-hole 704A can be prevented from flowing in the circumferential direction from the lower portion 706A because of the presence of step portions 705A (see FIG. 6(c)) on both sides of the lower portion 706A. In other words, the lower portion 706A and the pair of step portions 705A function as puddles, preventing the liquid 8 from flowing away from the through-hole 704A. In addition, the bottom rib portion 703A has a pair of connecting portions 708A (see FIG. 6(c)) on both circumferential sides of the through hole 704A, thereby preventing the liquid 8 that has flowed over the lower portion 706A from flowing in the circumferential direction.

[0030] 7(c), the lid 7 is further tilted. This causes the liquid 8 to flow out from the through-hole 720a as indicated by the arrow B. At this time, the top rib portion 723A and the packing 74 are close to each other, and the through-hole 720a is located between the top rib portion 723A and the packing 74, so that the liquid can easily flow out.

[0031] Although the embodiment has been described above, the present invention is not limited to this embodiment, and may be modified as follows, for example. In addition, the embodiment and the modified examples may be combined, or the modified examples may be combined. Furthermore, the present invention also includes examples that are not described in the embodiments and modified examples, and design changes that do not deviate from the gist of the invention.

[0032] <Modification> 1.Heating device Although the heating device 1 is capable of automatic cooking by a program, it does not have to have an automatic cooking function. Two temperature sensors are provided as a safety measure, but from a patent perspective, it is acceptable to have none, one, or three or more temperature sensors. The heating device 1 is equipped with a reed switch, and when the container body 5 is placed, the magnet of the container body 5 enables current to flow (ON state), but other switches may also be used. As other switches, a button switch, a photosensor, or the like that detects the downward movement of the movable member 114 may be used.

[0033] 2. Container Although the container 3 has a circular cross section, it may have other shapes such as an ellipse, a rectangle, etc. Also, although the container 3 has a flat shape with a diameter that is at least twice its height, it may also be a container with a diameter that is less than twice its height. (1) Container body The container body 5 has a handle portion 52 having a gripping portion extending in the vertical direction, that is, a handle portion 52 that allows the container body 5 to be held with one hand, but the handle portion may be provided at opposing positions on either side of the center of the container body 5 and allow the container body to be held with both hands, or the container body may have both types of handle portion, or the handle portion may be provided in a removable manner.

[0034] (2) Lid The lid 7 has one through hole 720a and one guide portion 709 for draining liquid from the internal space, but may have two or more. However, by increasing the number of through holes 720a, water or the like becomes more likely to enter the internal space when the lid 7 is washed. For this reason, one or two through holes 720a are preferable. The through hole 720a has a rectangular shape that is elongated in the circumferential direction, but it may also be a rectangular shape that is elongated in the radial direction, a square shape, a square or parallelogram whose diagonals are parallel to the radial direction, an elliptical shape, a circular shape, an oval shape, etc. Although the through hole 720a and the guide portion 709 are provided to correspond to the protruding portion 700b and the recessed portion 700a of the bottom plate 70, they may be provided in other positions. In this case, it is preferable that the inner surface of the bottom plate, that is, the portion facing the internal space, is inclined in the same manner as the inner surface of the recessed portion 700a. Although the through-hole 720a is provided on the top plate 72 side, if the only consideration is to drain the liquid in the internal space, it may be provided on the bottom plate 70 side. In this case, it is preferable to provide the through-hole 720a at a position abutting the open end surface of the container body 5 in order to prevent the intrusion of water vapor or the like during cooking. Guide portion 709 is provided in recessed portion (inclined portion) 700a, but may be provided in a portion that is not recessed. However, in consideration of guiding liquid to through-hole 720a, it is preferable that at least the inner surface is inclined so as to approach top plate 72 as it approaches the through-hole. Through hole 720a and guide portion 709 are provided by using bottom side engagement portion 702A and top side engagement portion 722A, but a rib portion or the like that does not have an engagement structure may be used. In other words, guide portion 709 may be configured to have only the function of guiding liquid to through hole 720a. The lid 7 is assembled integrally by engaging the bottom plate 70 and the top plate 72, but may be assembled by screws or the like instead of an engagement structure. Although the knob body 76 has a circular shape when viewed from above, it may have another shape.

[0035] <Other> In the embodiment, attention is focused on removal of liquids such as water, detergent, soup, juice, etc. that have entered inside the lid body 7, and the embodiment includes, for example, the following invention. 1. Invention 1 There has been proposed a water heater for cooking that includes a container 3 and a heating device 1. However, in the proposed water heater for cooking, the cooking is heated manually, and therefore adjustment of the heating strength, time, etc. (adjusting the heater) is troublesome. The present invention 1 relates to a cooking water heater comprising a container and a heating device, the heating device comprising a heater and a control unit for controlling the heating of the heater, the control unit having a plurality of programs corresponding to the cooking contents and controlling the heater in accordance with the program corresponding to the content selected by a user. This eliminates the need to adjust the heater, making cooking easy. In the invention 1, the container 3 may or may not have a lid 7. In addition, the structure of the lid 7, for example, a structure that makes it easy for liquid to drain, may not be included, and a temperature sensor as in the invention 2 described below may not be included.

[0036] 2. Invention 2 There has been proposed a water heater for cooking that includes a container and a heating device. Since the heating device heats the container, there is a demand for improving safety. Invention 2 relates to a cooking water heater comprising a container and a heating device, the heating device comprising a heating unit having a heater, a control unit for controlling heating of the heater, a first temperature sensor for detecting a temperature corresponding to the temperature of a container placed on the heating unit, and a second temperature sensor for detecting a temperature corresponding to the temperature of the heater. As a result, even if one of the temperature sensors does not work for some reason, the other temperature sensor can detect the temperature, ensuring safety. The heating device further includes a heating plate that houses the heater and has the container placed on its upper surface, and a movable member that is arranged in a through hole of the heating plate and supported so as to be able to rise and fall above the heating plate, the first temperature sensor being provided directly or indirectly on the movable member, and the second temperature sensor being provided directly or indirectly on the heating plate. Alternatively, the heating device has a heating plate that houses the heater and has the container placed on its upper surface, a movable member that is arranged in a through hole of the heating plate and supported so as to be able to rise and fall above the heating plate, and a fixed plate for fixing the heating plate to a housing, and the first temperature sensor is provided directly or indirectly on the movable member, and the second temperature sensor is provided directly or indirectly on the fixed plate. As a result, for example, if a member other than a container causes the movable member to become recessed and the heater is activated, the temperature of the first temperature sensor will not become excessively high because it is not in contact with the container, but the second temperature sensor can detect the temperature of the heater even if a container is not placed on it. The control unit stops the heating of the heater when the first temperature sensor reaches a first temperature, and stops the heating of the heater when the second temperature sensor reaches a second temperature higher than the first temperature, thereby further improving safety. [Explanation of symbols]

[0037] 1 Heating device 3 containers 5 Container body 7 Lid 70 Bottom plate 72 Tabletop 709 Guide part 720a through hole

Claims

1. A container body having an opening at an upper portion; A lid body that closes the opening of the container body; A heating device for heating the placed container body; Equipped with The lid body includes a bottom plate and a top plate, the top plate has a through hole communicating with an internal space formed by the bottom plate and the top plate, The bottom plate has a guide portion that guides the liquid in the internal space toward the through hole. Water heater for cooking.

2. The guide portion is provided on an inclined portion such that the distance between the guide portion and the top plate decreases as the guide portion approaches the through hole.

2. The cooking water heater according to claim 1.

3. The bottom plate and the top plate have engagement portions that engage with each other.

3. The cooking water heater according to claim 1 or 2.

4. The through hole and the guide portion face each other in a thickness direction of the lid body, The through hole is provided near the engagement portion of the top plate, The engagement portion of the bottom plate is provided on the guide portion.

4. The cooking water heater according to claim 3.

5. The engaging portion of the bottom plate has a rib portion extending toward the top plate and a through hole formed in the rib portion, the engaging portion of the top plate engages with the through hole formed in the rib portion from the opposite side to the center of the top plate, The through hole communicating with the internal space of the top plate is provided on the opposite side of the center of the top plate with respect to the engagement portion of the top plate.

5. The cooking water heater according to claim 3 or 4.

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