JP2007275165A - Heat insulation structure of lid of electric hot water storage container - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve the heat insulation property of an electric hot water storage container by increasing the cover rate at the upper part of a container body opening and filling rate into a lid of a heat insulating material. <P>SOLUTION: In the heat insulation structure of the lid 13 of an electric hot water storage container comprising a lid upper member 201 made of a resin, a lid lower member 202 made of the resin, a metallic inner lid member 203 provided below the lid lower member 202, a pressurizing member 204 provided on the almost center of the lid upper member 201, and bellows 50 provided under the pressurizing member 204 and pressurized by the pressurizing member 204 for blowing air from an air supply port 501 projecting downwards, supplying the air into the container body 1 of the electric hot water storage container, pressurizing and dispensing a contained liquid, the heat insulating material 205 is provided around the side periphery of the bellows 50 and around the air supply port 50a at the lower part of the bellows 50 or around the air supply port 50a and an air supply path 50b continued from the air supply port. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention provides a lid for an electric hot water storage container that heats and heats the content liquid in the container, and pressurizes and discharges the stored liquid by a bellows built in the lid of the container. It relates to a heat insulating structure.

This type of electric hot water storage container and its lid are already widely known as electric water heaters, electric pots and the like (see, for example, Patent Documents 1 and 2). The heat retention performance of these electric hot water storage containers greatly affects the power consumption in keeping the content liquid at a predetermined temperature. Therefore, the container that heats and retains the contents liquid has been built for a long time to have a heat insulating structure such as incorporating a heat insulating material or adopting a vacuum double container as described in Patent Document 2, The heat retention performance has been remarkably enhanced by the adoption of a vacuum double container. On the other hand, the upward escape of heat through the lid cannot be suppressed by the heat insulation structure on the body side, and a bellows is attached to the lid regardless of whether the body is equipped with an electric pump as in the case of Patent Document 2. By incorporating the bellows, as disclosed in Patent Document 2, there is almost no circulation of air when not in use, so that the structure described in Patent Documents 1 and 2 has a heat insulating material in the lid. In order to further improve the heat insulation performance.
Japanese Patent No. 2502671 Japanese Patent No. 36060312

  However, the bellows described in Patent Documents 1 and 2 are provided on the lower lid member and its lower side because the lower end is welded to a resin lid lower member that forms the periphery of the lower surface of the lid. A heat insulating material is provided around a steam passage for vapor discharge formed between the metal inner lid member, and the one described in Patent Document 2 is a cover in which the heat insulating material extends upward to the periphery of the bellows. Although the filling rate of the heat insulating material is increased, the covering rate of the heat insulating material above the opening of the vessel is still small in the ones described in Patent Documents 1 and 2. In the thing of patent document 1, there is no heat insulating material around the side periphery of a bellows, and the filling rate of the heat insulating material in a lid | cover is small compared with the thing described in patent document 2. FIG.

  Therefore, the present inventor researched to increase the covering rate of the heat insulating material above the container opening and the filling rate into the lid and engaged in technical development, while changing the lid structure and bellows structure, the covering rate of the heat insulating material It was realized to further enhance.

  The object of the present invention is to achieve the heat insulation of the lid of the electric hot water storage container, which has a high coverage rate above the opening of the body of the heat insulating material and a high filling rate into the lid and can improve the heat retention of the electric hot water storage container. To provide a structure.

  In order to achieve the above object, the heat insulation structure of the lid of the electric hot water storage container of the present invention includes a resin lid upper member that forms the periphery of the lid upper surface, a resin lid lower member that forms the periphery of the lid lower surface, A metal inner lid member provided on the lower side of the lid lower member, a pressing member provided at substantially the center of the lid upper member, and a downward operation performed by the pressing member provided below the pressing member. In the heat insulation structure of the lid of the electric hot water storage container with the bellows that blows air from the air supply port protruding to the inside of the electric hot water storage container and pressurizes and discharges the content liquid, A heat insulating material is provided around the air supply port or around the air supply port and the subsequent air supply passage.

  In such a configuration, a heat insulating material is provided around the side periphery of the bellows built in the lid and around the air supply port or the air supply port that projects downward from the lower surface of the bellows and the air supply passage that follows it. The cover ratio of the upper part of the container closing the cover and the filling ratio into the cover are higher than those described in Patent Documents 1 and 2, and the upper end opening of the container is closed to the upper part by that amount. The heat insulation effect with respect to heat dissipation is enhanced.

The heat insulating material around the air supply port under the bellows is provided between the lower surface of the bellows and the lower lid member, and the air supply port supplies air into the chamber through the air supply passage from the lower lid member to the inner lid member. Further configuration in which the vapor in the body spreads between the inner lid member and the lower lid member and is released to the upper surface of the lid through a vapor passage that rises up to the lid upper member at a part of the hinge connecting portion to the rear part of the lid body. Then
The heat insulating material around the air supply port under the bellows is independent of the steam passage formed between the lower cover member and the lower inner cover member between the lower surface of the bellows and the lower cover member. The steam passage is provided with only the influence of avoiding the rising part, and the steam passage uses a large space that is not obstructed by the heat insulating material under the lid member. It is possible to sufficiently lengthen the time for flowing out without being bulky.

The steam passage has at least an annular detour passage between the lower lid member and the inner lid member for receiving the incoming steam from the body on the side of the front of the body and distributing the left and right to the rising part at the rear of the body. In a further configuration,
A steam passage provided using a wide space between the lower lid member and the inner lid member distributes the left and right guides to the rising part at the rear of the body by receiving the incoming steam from the body on the front side of the body By providing at least one annular bypass passage, it is possible to sufficiently delay the time until the content liquid that flows in when the body rolls over flows out to the outside through the steam passage. It can also be combined with detours and pool spaces arranged above.

In the further configuration, the air supply passage and the steam passage are switched to the inside of the container in conjunction with the pressing operation of the bellows and the release of the pressing operation.
Along with the function of the air supply passage and the steam passage that are connected to the inside of the vessel at different times, the air supply passage and the steam passage are switched to the inside of the vessel in conjunction with the pressing operation of the bellows and the release of the pressing operation. The liquid content is pressurized and discharged without escaping into the passage, and the steam inside the container is allowed to flow only into the steam passage and be discharged outside without entering the air inlet side except during the pressing operation of the bellows.

In the switching, the air supply passage is formed by an elastic member and fitted into the opening of the lid lower member from above so that it can be attached / detached and expanded / contracted to the inner lid member side. Connecting and disconnecting the lower end of the air supply passage to and from the air passage communicating with both the air supply passage and the steam passage of the inner lid member at the lower end of the valve rod that moves up and down in conjunction with In the further configuration, which is performed by opening and closing the air supply port in conjunction with the connection and disconnection with an on-off valve provided in the middle of the valve rod,
The air supply passage of the inner lid member is expanded and contracted between the lower lid member and the inner lid member by an operation of one valve rod interlocking with the pressing operation of the bellows to extend and contract the air supply passage made of an elastic member following the air inlet of the bellows. In addition, by switching between connection and disconnection for the vent hole leading to the steam passage, and at the same time switching the opening and closing of the air supply port with an on-off valve in the middle of the valve, the above-mentioned necessity is achieved without any special valve chamber or partition wall. Can be switched easily.

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

  According to the heat insulation structure of the lid of the electric hot water storage container of the present invention, there is a circumference around the side of the bellows built in the lid, and around the air supply port or the air supply port projecting downward from the lower surface of the bellows and the subsequent air supply passage. With the heat insulating material, both the opening upper covering rate of the heat insulating material body and the filling rate in the lid are high, and the heat insulating effect and heat retention performance of the upper part of the heat storing body are enhanced, and the resource and energy savings are excellent.

  Insulation material around the air inlet under the bellows is provided with a small covering rate loss that is independent of the steam path and avoids the rising part of the steam path, and the steam path is a large space that is not obstructed by the heat insulation material. The content liquid flowing into the steam passage at the time of rollover can be sufficiently delayed without being bulky, and the lid can be kept low.

  The steam passage has at least one annular bypass passage for receiving the inflowing steam from the inside of the body on the front side of the body and distributing and guiding it left and right up to the rising part at the back of the body, and the liquid flowing in when the body rolls over Is sufficiently delayed to flow out to the outside through the steam passage, and the delay effect can be enhanced while being low in combination with a detour passage or a storage space on the same plane using the pre-space.

  The air supply passage and the steam passage function reliably without any air supply leakage and steam leakage to the other by switching to the inside of the container in conjunction with the pressing operation of the bellows and the release of the pressing operation.

  With one operation of the valve rod linked to the pressing operation of the bellows, the air supply passage following the air supply opening is switched between connection and disconnection with respect to the air passage leading to the air supply passage and the steam passage of the inner lid member, At the same time, by switching the opening and closing of the air supply port with an opening / closing valve in the middle of the valve rod, the switching can be performed with a simple and low-profile structure without a special valve chamber or partition.

  Hereinafter, embodiments according to the present invention will be described in detail with reference to FIGS. 1 to 7 for the understanding of the present invention.

  This embodiment is an example of a household electric pot, and as shown in FIG. 1, a resin lid upper member 201 that forms the periphery of the lid upper surface and a resin lid that forms the periphery of the lid lower surface. A lower member 202, a metal inner lid member 203 provided below the lid lower member 202, a pressing member 204 provided substantially at the center of the lid upper member 201, and a lower member provided below the pressing member 204 An electric pot provided with a bellows 50 that is pressed by a pressing member 204 and blows air from an air supply port 50a protruding downward to supply air into the body 1 of the electric pot to pressurize and discharge the content liquid. The heat insulating structure of the lid 13, as shown in FIGS. 1 to 3, has a heat insulating material around the bellows 50 side and around the air supply port 50 a or the air supply port 50 a below the bellows 50 and the air supply passage 50 b. 205 It is provided. The heat insulating material 205 around the bellows 50 side and the heat insulating material 205 around the air supply port 50a under the bellows 50 are annular products integrated into an L-shaped cross section as shown in FIG. The annular space around the bellows 50 formed by the upper lid member 201 and the lower lid member 202 of the lid 13 is filled except for the portion that interferes with the internal arrangement member.

  Actually, the pressing member 204 covers the bellows 50 in a cap shape, and the peripheral wall 204a of the pressing member 204 moves up and down to the peripheral wall 201b extending downward from the opening 201a in which the pressing member 204 of the lid upper member 201 is fitted. The heat insulating material 205 around the side periphery of the bellows 50 is positioned around the side periphery of the peripheral wall 201b of the upper lid member 201 and is not seen from the opening 201a. There is no obstacle to the vertical movement and the expansion and contraction due to the bellows shape of the bellows 50. Moreover, the bellows 50 incorporates a restoring spring 206 as shown in FIGS. 1 to 3 and 5, and expands and contracts every time it is pressed by the pressing member 204, and the internal air is blown out from the air supply port 50 a to supply air. Each time the pressing operation is released, it is expanded and restored by the restoring spring 206. At that time, the outside air 211 is sucked from the upper inlet 50d as shown in FIG. The intake of the outside air 211 is performed by the valve body 5e applied to the valve body 50e formed integrally with the upper end of the valve rod 213 fitted to the intake port 50d so as to be able to move up and down slightly from above. The air supply port 50d is normally opened by the operation, and after the valve member 50e is pressed against the intake port 50d against the restoring spring 206 during the pressing operation by the pressing member 204 and the intake port 50d is closed, the bellows 50 2 starts to blow out the outside air 211 sucked into the bellows 50 from the air supply port 50a as shown in FIG. Accordingly, it is possible to repeatedly supply air into the body 1 through the air supply port 50a by repeating the pressing operation on the pressing member 204 and the release of the pressing operation, or through the air supply port 50a and the subsequent air supply passage 50b. However, the heat insulating material 205 may be divided and arranged in any way.

  As shown in FIG. 6, the pressing member 204 has protrusions 204b formed at three outer peripheral portions of the peripheral wall 204a and Γ-shaped concave portions 201c formed at three inner peripheral portions of the peripheral wall 201b of the lid upper member 201. At the same time, the valve body 50e that is prevented from coming off upward in the upward movement position and is urged upward by the restoring spring 206 is received from above, and when the valve body 50e is moved downward, the valve body 50e is pressed against the intake port 50d and then the bellows 50 Can be contracted by pressing. The concave portion 201c prevents the downward movement at the rotational position of the pressing member 204 where the convex portion 204b is positioned in the Γ-shaped upper horizontal concave portion 201c1, that is, prevents the pressing operation of the bellows 50 and continues to the vertical concave portion continuous with the one end of the Γ shape. In the rotational position of the pressing member 204 located at 201c2, the downward movement is allowed, that is, the pressing operation of the bellows 50 is allowed. Therefore, an operation convex portion 204c as shown in FIGS. 2 and 6 for rotating the pressing member 204 between the two positions is integrally formed at the eccentric position of the top surface of the pressing member 204. Further, the peripheral wall 204a of the pressing member 204 is provided with engaging pieces 204d such as a resin spring as shown in FIG. 6 in three circumferential directions, and when the pressing member 204 moves to the pressing operation blocking position. 6 is formed in the peripheral wall 201b of the lid upper member 201 and is elastically engaged with the engagement recess 201d as shown in FIG. Thereby, it can be avoided that the pressing member 204 is carelessly moved to the pressing operation allowable position due to an infant's mischief or the like.

  As described above, the heat insulating material 205 is provided around the side periphery of the bellows 50 built in the lid 13 and around the air supply port 50a or the air supply port 50a projecting downward from the bellows lower surface 50c and the air supply passage 50b subsequent thereto. By being provided, both the covering rate of the heat insulating material 205 above the opening 12 of the container 1 where the lid 13 is closed and the filling rate into the lid 13 are higher than those described in Patent Documents 1 and 2. Moreover, the heat insulation effect with respect to the heat dissipation to the upper part by the lid | cover 13 closing the upper end opening 12 of the container 1 is heightened so much. As a result, heat insulation is provided by the heat insulating material 205 around the side periphery of the bellows 50 built in the lid 13 and around the air supply port 50a or the air supply port 50a projecting downward from the lower surface 50c of the bellows and the air supply passage 50b. The covering ratio of the material 205 above the opening 12 of the container 1 and the filling rate in the lid 13 are high, and the heat insulation effect and heat retention performance of the upper part of the container 1 where hot water is stored can be enhanced, resulting in excellent resource and energy savings.

  Further, as shown in FIGS. 1 to 3, the heat insulating material 205 around the air supply port 50 a below the bellows 50 is provided between the bellows lower surface 50 c and the lid lower member 202, and the air supply port 50 a is the lid lower member 202. The air is supplied into the container 1 through the air supply passage 50 b extending from the inner cover member 203 to the inner lid member 203, and the steam 212 in the container body 1 spreads between the inner lid member 203 and the lower lid member 202, and the rear portion of the container 1 of the lid 13. It is made to discharge | release to the upper surface of the lid | cover 13 through the vapor | steam channel | path 125 which stands | starts up to the lid | cover upper member 201 in the hinge connection part side part by the hinge pin 120 to the front. Thereby, the heat insulating material 205 around the air supply port 50a under the bellows 50 is steam formed between the lower lid member 202 and the lower inner cover member 203 between the lower bellows lower surface 50c and the lower lid member 202. Independent of the passage 125, the steam passage 125 is provided with only the influence of avoiding the rising portion 125e, and the steam passage 125 uses a wide space that is not obstructed by the heat insulating material 205 under the lid lower member 202. It is possible to sufficiently lengthen the time for the content liquid flowing into the steam passage when the container rolls over to flow outside through the steam passage without being bulky. As a result, the heat insulating material 205 around the air supply port 50a under the bellows 50 is provided with a small covering rate loss that is independent of the steam passage 125 and avoids the rising portion 125e of the steam passage 125, and the steam passage 125 is provided with the heat insulating material. In a wide space that is not obstructed by 205, the content liquid flowing into the steam passage 125 when the container 1 rolls over is sufficiently delayed without flowing out through the steam passage 125, and the lid 13 is lowered. I can keep it.

  As shown in FIGS. 3 and 4, the steam passage 125 receives the inflowing steam 212 from the inside of the vessel body 1 on the front side of the vessel body 1 between the lower lid member 202 and the inner lid member 203. It is assumed that it has at least an annular detour passage 125f that guides left and right up to the rising portion 125e at the rear of the body 1. As a result, the steam passage 125 provided by utilizing a wide space between the lid lower member 202 and the inner lid member 203 is formed in the body 1 on the front side of the body 1 as shown in FIGS. By simply providing at least one annular bypass passage 125f that receives the inflowing steam 212 from the rear side and guides it to the left and right up to the rising part at the rear of the body 1, the content liquid that flows in when the body 1 rolls over flows out to the outside through the steam path 125. It is possible to sufficiently delay the time until it is done, and it is also possible to combine with a detour passage or a collecting space 125h arranged on the same plane using the reserved space. As a result, the steam passage 125 has at least one annular bypass passage 125f that receives the inflowing steam 212 from the inside of the container 1 on the front side of the container 1 and distributes and guides it to the rising part of the rear of the container 1 from side to side. Thus, the content liquid that flows in when the container rolls over is sufficiently delayed from flowing out through the vapor passage 125, and is low in combination with a detour passage on the same plane using the reserved space or a storage space 125h. The delay effect can be increased.

  Here, the air supply passage 50b and the steam passage 125 are switched in the container 1 in conjunction with the pressing operation of the bellows 50 and the release of the pressing operation. As a result, the air supply passage 50b and the steam passage 125 function in communication with the interior of the container 1 at different times, and are switched to the interior of the container 1 in conjunction with the pressing operation of the bellows 50 and the release of the pressing operation. Then, the supply air blown out of the outside air 211 by the pressing operation of the bellows 50 is discharged without pressurizing the content liquid to the steam passage 125, and the steam 212 in the body 1 is supplied to the air supply port except during the pressing operation of the bellows 50. Without entering the side, it is allowed to flow only into the steam passage and be released to the outside. As shown in FIGS. 2 and 3, the specific switching is performed by forming the air supply passage 50b by an elastic member and connecting it to the lower end of the air supply port 50a. The lower end member 202 is fitted into the opening 202f of the lower lid member 202 from above, and has a throttle port 50b2 that can be attached and detached and can be expanded and contracted toward the inner lid member 203 at the lower end, in conjunction with the pressing operation of the bellows 50 and the pressing operation release. 2 at the lower end 213a of the valve rod 213 that moves up and down, with respect to the vent hole 214 that connects the throttle port 50b2 at the lower end of the air supply passage 50b to both the air supply passage 50b and the steam passage 125 of the inner lid member 203. The connection state shown in FIG. 3, the connection release state shown in FIG. 3, and the opening / closing valve 213b provided in the middle of the valve rod 213 is opened and closed in conjunction with the connection and connection release. As a result, the operation of one valve rod 213 interlocked with the pressing operation of the bellows 50 allows the air supply passage 50b formed of an elastic member following the air supply port 50a of the bellows 50 to pass between the lid lower member 202 and the inner lid member 203. The vent hole 214 communicating with the air supply passage 50b and the steam passage 125 of the inner lid member 203 is expanded and contracted to switch between connection and disconnection, and at the same time, the air supply port 50a is opened by the opening / closing valve 213b in the middle of the valve rod 213. By switching between opening and closing, the necessary switching can be performed without any special valve chamber or partition. As a result, the operation of one valve rod 213 interlocked with the pressing operation of the bellows 50 causes the air supply passage 50b following the air supply port 50a to the air vent 214 communicating with the air supply passage 50b and the steam passage 125 of the inner lid member 203. On the other hand, switching between connection and disconnection is performed, and at the same time, opening / closing switching of the air supply port 50a is performed by the opening / closing valve 213b in the middle of the valve rod 213, thereby providing a simple and low-profile structure without a special valve chamber or partition wall. The switching can be performed. The valve rod 213 is provided with an expansion / contraction structure urged in the extension direction by the spring 216 so as to resist the interference with the spring 216 while moving up and down in conjunction with the pressing operation of the bellows 50 and releasing the pressing operation. So that it can be absorbed by contraction.

  The rising portion 125e of the steam passage 125 is located at the rear portion of the lid 13 and communicates with the steam discharge port 125g on the top surface of the lid 13, but a check valve 215 is provided immediately below it so that the contents liquid is externally transferred when the container 1 rolls over. To prevent it from leaking out as much as possible. The check valve 215 closes immediately inside the steam discharge port 125g even when the lid 13 is opened and tilted backward, so that the condensed water that has condensed on the rising portion 125e of the steam passage 125 flows out due to the backward tilt of the lid 13. Even if it tries, only the dew condensation water of the micro range by the side of the vapor | steam discharge port 125g from the non-return valve 215 will be object, and since it is trace amount, it will be easy to prevent flowing out. The check valve 215 at this position is a wide-mouth type in which the mouth 3a of the inner container such as the vacuum double container 3 has the same diameter as that of the body 3b of the vacuum double container 3 shown in FIGS. In addition to the above, there is an advantage that it is provided without obstructing the narrow-mouthed type narrowed to be smaller than the inner diameter of the body 3b of the vacuum double container 3 of the example shown in FIG. Therefore, if the rising portion 125e having the check valve 215 is an independent member connected to the lid upper member 201 and the lid lower member 202, it becomes a component that can be shared by the wide mouth type and the narrow mouth type. It should be noted that the heat insulating material 205 of the lid 13 extends almost to the outer shape of the body portion 3b of the vacuum double container 3 regardless of the size of the mouth 3a of the vacuum double container 3 as shown in FIGS. The heat insulation of the upper part of the container 1 is enhanced.

  5 and 6, the bellows 50 can be manufactured as an independent part from the upper end valve body 50e to the lower end air supply passage 50b, and the production cost of the lid is reduced. . Moreover, since it can be attached to and detached from the lid 13 alone, it is convenient for maintenance at the time of breakage.

  As shown in FIG. 1, the vessel body 1 has a heat insulating structure in which a vacuum double container 3 made of stainless steel is housed in an outer case 2 as an inner container for hot water storage, but is not limited thereto, and other heat insulating structures It is good. In this example, a copper foil 64 is provided in the heat insulating space 63 of the vacuum double container 3, and a heat insulating material 205 is disposed around the outer periphery of the vacuum double container 3 to further increase the heat insulating effect. An electric pot having a remarkably high heat retention is formed by a combination with the lid 13 held. Further, the heater 11 is applied to the single bottom portion 3c of the vacuum double container 3 so that the content liquid can be efficiently heated without being affected by the heat insulating structure, and the content liquid is discharged to the outside of the container body 1 to the single bottom portion 3c. A discharge path 25 is connected, the discharge path 25 rises between the vacuum double container 3 and the outer case 2, and a discharge port 25 d faces the front part of the container 1. An electric pump 26 is provided in the middle of the discharge passage 25 so that the content liquid can be discharged electrically. At the same time, the manual bellows 50 is pressed, and when the air is supplied into the container 1, specifically, into the vacuum double container 3, the liquid content is pressurized and discharged outside through the discharge passage 25. I am doing so.

  Here, the bellows 50 contributes to the heat insulation at the lid 13 and is used by manually discharging the content liquid in a state where the power source is not connected or in a hot water storage state only by heat retention in a place where there is no power source. Bring the convenience to the user. In order to prevent such pressure discharge and heat retention and inadvertent blowing of the steam 212, a seal that is sandwiched between the lower lid member 202 and the inner lid member 203 of the lid 13 and seals between them. The member 65 is pressed against the mouth 3a of the vacuum double container 3 so as to seal between the lid 13. Further, a lock member 21 is provided at the front portion of the lid 13 hinged to the rear portion of the container body 1 so as to engage with the engaging portion 19 on the shoulder member 6 side in the closed position and lock the lid 13 in the closed position. When the lid 13 is closed, the spring 22 is always urged to the locked position so that it automatically engages with the locking portion 19, and the lid 13 is inadvertently closed by this locking mechanism. I try not to loosen it. Correspondingly, the lid 13 is provided with a lock release member 23 for releasing the lock by retracting the lock member 21. As shown in FIG. 1, the unlocking member 23 is of a lever type pivotally supported on the lid 13 by a shaft 24. By pushing down the front end 23a with a thumb or the like and rotating it counterclockwise, the locking member 21 is spring-loaded. It is possible to lift the lid 13 which has been unlocked by lifting the rear end 23b raised by the unlocking operation with another finger and opening it.

  The electric pump 26 is a centrifugal pump provided at a position immediately below the vacuum double container 3, and feeds the content liquid flowing from the vacuum double container 3 to the discharge port 25 d facing the outside of the container 1 through the discharge path 25. The liquid is discharged from the discharge port 25d and used.

  Although not shown, the space between the bottom of the outer case 2 and the bottom of the vacuum double container 3 or between the body 2a of the outer case 2 and the body 3b of the vacuum double container 3, A control board for energizing and controlling the heater 11 together with the electric pump 26 is housed, and a temperature sensor is applied to the center of the single bottom portion 3c of the vacuum double container 3 from below to detect the temperature of the liquid content at that time. Thus, temperature information when the content liquid is controlled to be heated in the hot water heating or the heat retaining mode is obtained.

  An overhanging portion 31 is formed on the front portion of the shoulder member 6 of the container body 1 so as to project in a bowl shape. The upper surface of the overhanging portion 31 is an operation surface 30, and other operations for discharging operation members, mode setting, etc. A lamp display corresponding to various operations, or a liquid crystal display unit showing a selection state and an operation state. Below the operation surface 30 of the overhanging portion 31, that is, inside the operation surface 33, an operation board 33 for transmitting and receiving signals corresponding to the operation and display is provided and equipped with necessary switches and display units. To enable external operations and external display. The upper portion of the discharge passage 25 is a portion between the overhanging portion 31 of the container body 1 and the pipe cover portion 2d on the outer case 2 side, thereby forming an inverted U-shaped unit 25c. A valve 134a, a forward stop water stop valve 134b, and a discharge port 25d are provided. The discharge port 25d is opened downward through the pipe cover portion 2d.

  The rotary seat ring 37 is fitted in the downwardly facing recess 111a of the bottom member 111 of the outer case 2 so as to be able to rotate from below, and when the container 1 is placed on the table surface or the like, It is designed to change direction by lightly rotating above.

  The present invention is practically applied to an electric pot for home use, and the covering ratio of the heat insulating material above the body opening and the filling ratio into the lid are high, and the heat retaining property of the electric hot water storage container can be improved.

It is sectional drawing of the electric hot water storage container which concerns on this invention. It is sectional drawing which looked at the upper part of the electric hot water storage container of FIG. FIG. 2 is a cross-sectional view of the upper part in the same direction as FIG. 1. FIG. 2 is an internal bottom view of a steam passage between a lid lower member and an inner lid member of the lid of the electric hot water storage container of FIG. 1. It is sectional drawing of the bellows incorporated in the lid | cover of the electric hot water storage container of FIG. It is the perspective view which decomposed | disassembled the upper part of the electric hot water storage container of FIG. It is sectional drawing of the upper part which shows another example of the electric hot water storage container which concerns on this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Container 3 Vacuum double container 11 Heater 12 Opening 13 Cover 25 Discharge path 25d Discharge port 26 Electric pump 50 Bellows 50a Air supply port 50b Air supply path 50c Bellows lower surface 120 Hinge pin 125 Steam path 125e Rising part 125f Annular detour path 125g Steam Discharge port 201 Upper lid member 202 Lower lid member 203 Inner lid member 204 Pressing member 205 Heat insulating material 211 Outside air 212 Steam 213 Valve 213b On-off valve 214 Vent

Claims (5)

A resin lid upper member forming the periphery of the lid upper surface, a resin lid lower member forming the periphery of the lid lower surface, a metal inner lid member provided below the lid lower member, and the lid upper A pressure member provided substantially at the center of the member, and air is blown out from an air supply port provided below the pressure member and pressed downward by the pressure member to protrude downward, and is supplied into the body of the electric hot water storage container to contain the liquid. In the heat insulating structure of the lid of the electric hot water storage container provided with a bellows that pressurizes and discharges,
A heat insulation structure for a lid of an electric hot water storage container, characterized in that a heat insulating material is provided around the bellows side circumference and around the air supply opening or the air supply opening below the bellows and the air supply passage following it. The heat insulating material around the air supply port under the bellows is provided between the lower surface of the bellows and the lower lid member, and the air supply port supplies air into the chamber through the air supply passage from the lower lid member to the inner lid member. The steam in the body spreads between the inner lid member and the lower lid member and is discharged to the upper surface of the lid through a steam passage rising up to the lid upper member at a part of the hinge connecting portion to the rear part of the lid body. The heat insulation structure of the lid of the electric hot water storage container described in 1. The steam passage has at least an annular detour passage between the lower lid member and the inner lid member for receiving the incoming steam from the body on the side of the front of the body and distributing the left and right to the rising part at the rear of the body. The heat insulation structure of the lid of the electric hot water storage container according to claim 2. The heat insulation structure for a lid of an electric hot water storage container according to any one of claims 2 and 3, wherein the air supply passage and the steam passage are switched and communicated with the inside of the container in conjunction with the pressing operation of the bellows and the release of the pressing operation. In the switching, the air supply passage is formed by an elastic member and fitted into the opening of the lid lower member from above so that it can be attached / detached and expanded / contracted to the inner lid member side. Connecting and disconnecting the lower end of the air supply passage to and from the air passage communicating with both the air supply passage and the steam passage of the inner lid member at the lower end of the valve rod that moves up and down in conjunction with The heat insulation structure of the lid of the electric hot water storage container according to any one of claims 1 to 3, which is performed by opening and closing an air supply port in conjunction with the connection and disconnection by an on-off valve provided in the middle of the valve rod.

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