JP3458802B2 - Electric hot water storage container - Google Patents

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to an electric hot water storage container having a boiling water function and a heat retaining function.

[0002]

2. Description of the Related Art The above-mentioned electric hot water storage container, so-called electric pot, includes a container body having an inner container for storing hot water, and a lid body detachably attached to the container body so as to cover the upper end opening of the inner container. And an electric heater is arranged along the lower surface of the inner container. Control is performed such that the water stored in the hot water storage space surrounded by the inner container is heated to a boiling point by the electric heating of the electric heater, and then held at a predetermined heat retention temperature.

On the other hand, in order to discharge hot water while keeping warm, an electric pot provided with a push plate at the center of the upper surface of the lid and a manual air type bellows pump below it, a so-called air type electric pot. An electric pot provided with an electric pump in a container body, a so-called electric electric pot, has been put into practical use.

In the former electric pot, while it is necessary to perform the operation of expanding and contracting the bellows pump by pushing the push plate several times until the desired hot water supply amount is obtained, in the latter electric pot. By simply pressing the electric hot water supply switch lightly, the electric pump is energized and hot water is supplied during this time, which facilitates the hot water supply operation. However, the electric electric pot operates only when the power source is connected, and therefore cannot be used, for example, by temporarily moving to a place without a power source to supply hot water.

Therefore, for example, in Japanese Unexamined Patent Publication No. 8-117102, both an air type bellows pump and an electric pump are provided, and when the power source is connected, the electric hot water supply switch is pressed to supply hot water by the electric pump. An electric pot is disclosed in which hot water supply by a manual operation of pushing the push plate can be performed independently of each other.

[0006]

However, in the electric pot described in the above publication, as an operation unit for hot water supply,
Two operation parts, a push plate and an electric hot water supply switch, are provided. Each time hot water supply operation is performed, it is confirmed whether the power supply is connected or not connected, and then these two operation parts are used properly. is necessary. Therefore, for example, it is likely that the electric hot water supply switch is pressed in a state where the power supply is not connected, and then an extra operation is performed such that the operation is changed to the push plate and the hot water is manually supplied. Therefore, in the configuration in which the two operation portions are provided as described above, there is a problem in that the operation becomes complicated and sufficient operability cannot be obtained.

The present invention has been made in view of the above-mentioned problems, and an object thereof is to provide an electric hot water storage container which can improve operability during hot water supply and which can further simplify the entire structure. Especially.

[0008]

Therefore, the first aspect of the present invention is described.
The electric hot water storage container is a heating means for heating hot water in the hot water storage space formed in the container body, an electric pump for supplying hot water in the hot water storage space, and air is supplied to the hot water storage space by manual contraction deformation. An electric hot water storage container provided with an air pump for pressurizing and supplying hot water, the detecting means detecting a displacement when the air pump is manually operated, and the electric motor based on a detection signal from the detecting means. An electric pump operation control means for operating the pump is provided.
A lid attached to the container body to cover the hot water storage space from above
The body is equipped with an air pump, and the lid is
Push plate that pushes the pump from above to cause contraction deformation
Is attached so that it can move up and down, and the downward movement of this push plate is
Formed so that the output means detects and outputs a detection signal.
In addition to providing the above detection means on the container body,
Displacement transmission that transmits the downward movement of the push plate to the container body side
It is characterized in that means are provided.

According to this construction, the operation of the electric pump also occurs in response to the manual operation of the air pump, and therefore, it is not necessary to use the two operation parts differently depending on whether the power source is connected or not as in the conventional case. Will be easier.

Then, the air pump as described above is stored.
Provided in the lid to be attached to the container body to cover the hot water space from above, also in the lid, in the configuration of attaching the pressing plate to cause contraction deformation by pressing the air pump from above vertically movable Therefore, soluble to form a downward movement of the push plate to emit a detection signal detected by the detection means
Become Noh.

[0011] Then, the detection means is provided on the container body, the lid body, since it is a configuration in which a displacement transmission means for transmitting the downward movement of the push plate to the container body side, the structure of the whole and simpler ones Become. That is, by providing the detecting means to the container body, because the lid is an electrical wiring connection without the components necessary construction, whereby, a lid which is openably mounted to the container body Since it is not necessary to provide an electrical connection mechanism or the like with the container lid, the overall configuration is simplified.

Further, in this case, as in claim 2 , a main driving member that descends together with the push plate on the lid, and a substantially horizontal direction toward the container body side by the lowering operation of the main driving member engaged with the main driving member. If a driven member that displaces in the direction is provided as the displacement transmission means, the lowering operation of the push plate can be detected by the detection means of the container body while keeping the vertical dimension of the lid as small as possible. The overall size can be reduced.

If the main driving member is formed integrally with the pressing plate as in the third aspect, the number of parts is further reduced and the entire structure is simplified.

Further, in the case where the detection means to the container body, as claimed in claim 4, the detection means, by providing a position recessed from the inner wall surface of the container body surrounding the lid, the reliability is improved To do. In other words, when the lid is opened for pouring water into the hot water storage space or the like, the detection means is exposed to the wall surface of the container body, and the electric pump may malfunction due to inadvertent touching with this, or There is a risk that the detection means will be damaged due to impact. Therefore, by providing the detecting means at the position recessed from the wall surface, the above-mentioned problems are reduced and the reliability is improved.

[0015]

[0016]

[0017]

[0018]

[0019]

The electric hot water storage container according to claim 5 is formed on the container body.
Heating means for overheating the hot and cold water in the hot water storage space formed,
An electric pump for supplying hot water in the hot water storage space and a manual
Air is supplied to the hot water storage space by contraction deformation and pressurized to supply hot water.
It is an electric hot water storage container equipped with an air pump for
The displacement of the air pump when it is manually operated.
Based on the detection means to be output and the detection signal from this detection means.
Electric pump operation control hand that operates the electric pump
And a hot water supply lock switch for the electric pump is provided, and when the hot water supply lock switch is set to the operation stop mode for the electric pump, the electric pump operation control means is provided with a detection signal from the detection means. It is characterized in that control is performed to keep the power supply to the electric pump stopped even in the input state.

According to this structure, the operation of the electric pump is also suppressed.
Since it occurs in response to manual operation of the air pump,
The two operation parts can be used depending on whether or not the power supply is connected.
It is easy to operate because it does not need to be heated , and the user can select hot water supply that uses an electric pump together with the air pump or water supply that uses only the air pump without operating the electric pump, further improving usability. improves.

[0022]

[0023]

[0024]

DESCRIPTION OF THE PREFERRED EMBODIMENTS [Embodiment 1] Next, an embodiment of the present invention will be described in detail with reference to the drawings. FIG. 2 shows an electric pot as an electric hot water storage container according to this embodiment. This electric pot is configured by providing a container body 1 in which a hot water storage space 1a is formed which is recessed from above, and a lid body 2 which covers the space 1a above.

The container body 1 has a bottomed cylindrical outer case 3 as an exterior body, an inner container 4 surrounding the hot water storage space 1a, and upper ends of the outer case 3 and the inner container 4 are connected to each other. The outer case 3 and the shoulder case 5 are made of synthetic resin. In addition, shoulder case 5
Has an outer peripheral shape integrally formed with the upper end of the outer case 3, and the shoulder case 5 constitutes an upper exterior body of the container body 1. Further, the upper front surface side of the container body 1 is formed as a pouring portion 1b which bulges forward (leftward in the figure) like a beak, and a pouring spout pipe described later is provided at the lower end side in the pouring portion 1b. 15e is attached.

The inner container 4 is formed by a metal inner cylinder 6 and an outer cylinder 7 which are each formed of a stainless steel plate or the like. The inner cylinder 6 includes a cylindrical body portion 6a and a bottom plate portion 6
It is formed in a bottomed cylindrical shape having b and the space surrounded by these 6a and 6b is the hot water storage space 1a described above. A throttle portion 6c having a trapezoidal cross section and recessed radially inward is provided on the upper end side of the body portion 6a. In addition, a full-water scale 6d is formed on the inner surface of the rear surface side (right side in the drawing) slightly below the throttle portion 6c. By providing the narrowed portion 6c as described above and making the opening area at this portion smaller than that of the hot water storage space 1a below it, heat radiation is suppressed upward and the heat retention is improved.

The outer cylinder 7 is a cylindrical body 7a surrounding the body 6a of the inner cylinder 6 from the outside and a position lower than the bottom plate 6b of the inner cylinder 6 and radially from the lower end of the body 7a. It is formed in a shape having a bent portion 7b that is bent inward. The inner end of the bent portion 7b is further bent upward so as to contact the outer peripheral side of the bottom plate portion 6 of the inner cylinder 6 from below, and the upper end thereof is welded to the bottom plate portion 6b of the inner cylinder 6 by, for example, welding or the like. Are airtightly joined by.

On the other hand, the upper end of the body portion 7a of the outer cylinder 7 is also
The upper end of the body portion 6a of the inner cylinder 6 is airtightly joined in the same manner as above. Thereby, the body portions 6a, 7a of the inner cylinder 6 and the outer cylinder 7 are
A closed space 8 is formed between the outer peripheral side of the bottom plate portion 6b of the inner cylinder 6 and the bent portion 7b of the outer cylinder 7.
Is evacuated, and this space serves as a vacuum heat insulation space. As described above, the electric pot of the present embodiment has excellent heat retention performance because the inner container 4 is formed in the vacuum double structure.

The bottom plate portion 6b of the inner cylinder 6 is formed so that the inner side of the outer peripheral side of the joint with the outer cylinder 7 is recessed upward in a stepped shape. On the lower surface of the central part,
A bottom sensor 9 composed of a thermistor or the like is arranged so as to abut from the lower side. With this bottom sensor 9, the inner cylinder 6
The temperature of the bottom plate portion 6b, that is, the temperature of the hot water stored in the hot water storage space 1a is detected. A heater unit (heating means) 10 having a shape surrounding the bottom sensor 9 is attached to the bottom plate portion 6b from the lower side in the stepped recessed portion. This heater unit 10
Is formed by providing a mica heater having a structure in which a resistance heating type heater wire is sandwiched between mica plates (mica plates).

A heat shield plate 11 is attached to the lower side of the heater unit 10 to cover the unit 10 from below. Under the heat shield plate 11, an electric pump 12 composed of a centrifugal pump and an electric component box 13 are arranged side by side in the front and rear. In the electric component box 13, a control circuit is installed in which a microcomputer that controls the entire boiling water operation and the warming operation described later and that also functions as an electric pump operation control unit that controls energization of the electric pump 12 is mounted. The substrate 14 is stored.

The first outlet pipe 15a is connected to the suction port 12a of the electric pump 12. This first outlet pipe 15
The letter a passes through the front notch holes in the heat shield plate 11 and the heater unit 10, and the upper end is connected to the bottom plate portion 6b of the inner cylinder 6. On the other hand, the discharge port 12b of the electric pump 12
The 2nd pouring pipe 15b which goes to the front side of container body 1 is connected to.

A liquid volume pipe 15c extending upward in the space on the front side between the outer case 3 and the inner container 4 is connected to the second pouring pipe 15b. This liquid pipe 15c
The third pouring pipe 15d, which is bent in the pouring portion 1b from the lower side to the front side, is connected to the upper end of the pouring portion 1b, and the lower end of the pouring portion 1b is attached to the tip of the third pouring pipe 15d. Is connected to a pouring port pipe 15e penetrating downward.

As a result, as shown by the arrow in the figure, the pouring passage 15 is formed from the bottom of the hot water storage space 1a to the pouring spout pipe 15e, and the electric pump 12 is operated as will be described later, so that the hot water is stored. The hot water in the space 1a is poured from the pouring port pipe 15e through the pouring passage 15. The liquid volume tube 15c is formed of a transparent tube, and a water level scale is printed on the outer peripheral surface thereof. The outer case 3 is transparently formed in a partial region along the water level scale so that the outer case 3 can be visually recognized from the front. In addition, the third pouring pipe 15d has a fall stop valve 16 that closes the pouring passage 15 when the container body 1 rolls over, and a tilting valve that closes the pouring passage 15 when the container body tilts forward. Each of the water shutoff valves 17 is provided.

As shown in FIG. 3, the lid body 2 includes an upper case 21 forming an upper surface exterior body, and a lower case 22 fixed to the upper case 21 so as to cover the lower side of the upper case 21.
And a lower molded body 23 attached from below to the substantially central portion of the lower case 22, and an inner lid 24 that covers the lower molded body 23 from below. The upper case 21, the lower case 22 and the lower molded body 23 are each made of synthetic resin, and the inner lid 24 is formed of, for example, a metal plate such as a stainless steel plate.

The upper case 21 has a substantially circular shape in plan view, and
It is formed with a cross-sectional shape that is gently curved upwardly. The upper case 21 is provided with a circular opening at substantially the center thereof, and a cylindrical wall 21a surrounding the opening is integrally formed in a downward hanging shape. A push plate 25 for pushing down a bellows 27 described later is provided in the cylindrical wall 21a.
However, it is inserted so that it can move up and down.

The push plate 25 has a circular upper wall surface 25a.
And a cylindrical wall 25b hanging downward from the peripheral edge thereof. On the outer surface of the cylindrical wall 25b, vertically extending projections 25c are provided at three locations in the circumferential direction. The pressing plate 25 is assembled by fitting these protruding portions 25c into the slit grooves formed on the inner surface of the cylindrical wall 21a of the upper case 21. As a result, the protrusions 25c are guided by the slit grooves to move up and down, and the upper end surfaces of the protrusions 25c come into contact with the end surfaces of the slit grooves from the lower side. The position is regulated. The upper wall surface 25a of the push plate 25 is also formed in a gently curved shape along the upper surface of the upper case 21 at the upper limit position (position shown in the figure).

The lower case 22 is fixed to the upper case 21 such that the outer peripheral edge of the lower case 22 is in close contact with the peripheral edge of the upper case 21 from below. A lower surface of the lower case 22 is formed in a downward convex shape, and a bellows pump (air pump) 26 is provided on a substantially central upper surface thereof. The bellows pump 26 has a lower case 2 with a lower end edge.
A bellows-like bellows 27 fixed to 2 by welding or the like
An upper plate 28 for closing the upper end surface of the bellows 27, an intake valve 29 vertically movably fitted in a through hole formed in the center of the upper plate 28, and a lower side of the intake valve 29. And a shaft body 30 arranged so as to be movable up and down, and a flow path switching valve 31 made of an elastic body is provided at a lower end of the shaft body 30.
It is attached as an on-off valve that opens and closes a steam passage 39 described later. Further, inside the bellows 27, a first spring 32 that biases the upper plate 28 upward and a second spring 33 that is compressed between the intake valve 29 and the shaft body 30 are arranged.

When the bellows pump 26 is in a non-operating state (state shown in the figure), the upper plate 28 is pushed up by the first spring 32 and held at its upper limit position. In this state, the intake valve 29 is in an open state in which it projects upward from the upper plate 28, that is, in a state where the inside of the bellows 27 communicates with the upper space of the upper plate 28 through a slit hole formed in the peripheral wall of the intake valve 29. Is held.

On the other hand, although not shown, the upper end side of the shaft body 30 engages with the lower end portion of the downwardly hanging wall surface 28a formed on the lower surface of the upper plate 28, and the shaft body 30 is Downward movement is blocked. In this state, the lower end side of the shaft body 30 projects downward through the central through hole of the lower case 22. An air discharge port is formed between the inner peripheral surface of the central through hole and the outer peripheral surface of the shaft body 30. The peripheral side of the flow path switching valve 31 at the lower end of the shaft body 30 is the lower case 2
The air discharge port is held in a closed state by the flow path switching valve 31 by closely contacting the lower surface of 2 from the lower side.

When the pushing plate 25 is pushed downward from this state, first, the intake valve 29 descends so that the upper wall surface of the intake valve 29 comes into close contact with the upper surface of the upper plate 28. The valve is closed with the communication with the upper space blocked. Next, as the upper plate 28 is lowered integrally with the push plate 25, the shaft body 30 urged downward by the second spring 33 is also lowered, whereby the flow path switching valve 31 at the lower end is moved. The air discharge port is opened from the lower surface of the lower case 22 so as to be spaced downward. Therefore, the air compressed in the bellows 27 is discharged downward through the air discharge port as the push plate 25 descends.

To cover this air discharge port from below,
The lower molded body 23 is assembled. The lower molded body 23 includes a substantially horizontal circular wall surface 23 a that forms a first passage 35 between the lower molded body 23 and the lower surface of the lower case 22. The center position of the circular wall surface 23a, that is, the flow path switching valve 31.
The first passage 35 is provided at a position concentric with the second passage 3 which will be described later.
8 is formed with a communication hole 23b, and an internal communication passage 36 that vertically penetrates the lower molded body 23 is provided at a position slightly rearward of the communication hole 23b. An upper end side of the in-container communication passage 36 communicates with the first passage 35, and a lower end side of the inner lid 24 covers the lower molded body 23 from below.
Through a plurality of through holes (not shown) formed in
It communicates with the hot water storage space 1a. A fall stop water valve 37 is mounted in the internal communication passage 36.

On the other hand, below the circular wall surface 23a, an enclosure wall 23c extending forward from below the communication hole 23b is provided, and a second passage 38 is formed by the enclosure wall 23c. The front end of the second passage 38 communicates with a steam passage 39 rearward of the internal communication passage 36 through a space along the outer edge of the lower molded body 23 partitioned from the first passage 35, and the steam passage 39 is located below. It extends through the case 2 and extends upward, and communicates with the outside through the steam holes 21 b formed in the upper case 21.

When the pushing operation of the push plate 25 is performed as described above, the flow path switching valve 31 is initially lowered, and this contacts the circular wall surface 23a from above to close the communication hole 23b. As a result, the first passage 35 is blocked from communicating with the outside through the second passage 38 and the steam passage 39,
The air compressed in the bellows 27 is supplied into the hot water storage space 1a from the first passage 35 through the internal communication passage 36. As a result, even if the electric pump 12 is not operated, the hot water stored in the hot water storage space 1a is poured into the pouring passage 1
5 is poured.

On the other hand, when the pressing plate 25 is not depressed as described above, the flow path switching valve 31 is held at a position for closing the air discharge port of the bellows pump 26 as shown in the figure. . Therefore, the first passage 35 communicates with the second passage 38 through the communication hole 23b. As a result, the inside of the hot water storage space 1a is connected to the internal communication passage 36 and the first passage 3
5. The state of being communicated with the outside through the second passage 38 and the steam passage 39 is maintained. As a result, the steam generated in the hot water storage space 1a is discharged to the outside through this communication path, and the rise of the internal pressure is prevented.

Incidentally, the above-mentioned cylindrical wall 21 of the upper case 21.
In a, a lock cylinder 41 for switching between a state where the push plate 25 can be pushed and a state where it is blocked,
It is fitted onto the cylindrical wall 21a so as to be rotatable along the cylindrical wall 21a. Although not shown, the locking cylinder 41 is provided on its inner surface with a locking portion that projects radially inward. On the other hand, the push plate 25 is provided with a locked projection protruding outward at a lower end of the cylindrical wall 25b through a notch opening (not shown) formed in the cylindrical wall 21a of the upper case 21. There is.

When the locked projection comes into contact with the locking portion from above, the pressing operation from the upper limit position of the push plate 25 is prevented, that is, the pouring lock state is achieved. On the other hand, when the locking cylinder 41 is rotated from this state by a predetermined angle, the position of the locking portion is moved in the circumferential direction, and thus the locking projection is displaced from the vertical movement path. , Is switched to the unlocked state in which the pushing operation of the push plate 25 is possible.

The lock cylinder 41 is integrally formed with an operating portion extending upward from the upper end surface on the front side of the drawing. At the upper end of the operating portion, pouring is provided in an opening described later in the upper case 21. A lock knob 41a is provided. As will be described later, when the lock knob 41a is manually slid, the above-described rotational movement of the locking cylinder 41 occurs integrally with the lock knob 41a, whereby the locked state and the unlocked state of the push plate 25 described above are generated. Switching to and from the state is performed.

The lid body 2 having the above-described structure has a hinge receiver 42 provided on the rear end side (the right end side in the drawing) of the shoulder case 5.
It is supported by hinge pins 43 so as to be openable / closable and detachable. On the other hand, on the front end side of the upper case 22, the lid 2 is in a closed position (position shown in the drawing) that covers the upper opening of the inner container 4.
A lid lock mechanism 44 for locking the container body 1 is provided. The lock mechanism 44 is provided in the upper case 22.
A lid opening / closing lever 45 attached along with, and a lock claw 46 arranged below the lid opening / closing lever 45 slidably in the front-rear direction,
A spring 47 that biases the lock claw 46 forward is provided.

The front end side of the lock claw 46 is the lower case 2.
By penetrating 2 and fitting it into an engaging hole (not shown) formed in the inner wall 1c of the pouring portion surrounding the front side of the lid 2, the lid 2 is locked in the closed state. On the other hand, the lid opening / closing lever 45 is attached to the upper case 21 so that the front side of the lid opening / closing lever 45 is pushed upward so that the rear side is flipped upward. A push claw 45a extending downward is integrally formed on the lower surface of the lid opening / closing lever 45, and the lower end side of the push claw 45a moves rearward with the above-described rotation. As a result, the lock claw 46 slides backward against the spring force of the spring 47, the tip end side is disengaged from the above-described engagement hole in the inner wall 1c of the pouring portion, and the lid 2 is unlocked. In this state, that is, when the lid opening / closing lever 45 is rotated obliquely, by lifting the lever 45 upward, the entire lid body 2 rotates around the hinge pin 43 on the rear end side. 2 can be opened.

On the other hand, in front of the lid body 2, that is,
The upper surface of the pouring part 1b in the container body 1 is formed as an operation mode setting part. A switch board 51 is arranged on the lower side of the upper wall surface in this portion, and on this switch board 51, as shown in FIG.
-Three operation switches, a heat retention selection switch 53 and a cupmen timer switch 54, are attached. Also,
A display unit 55 is provided at the center.

By repeating the operation of pressing the reboil switch 52 from above, each operation mode displayed on the left side of the display unit 55 is switched (the pilot lamps 55a ... Are switched on). By this operation, for example, when "boiling" at the top of the display unit 55 is selected, the operation of re-boiling the hot water during the warming operation to be described later is started, and immediately after boiling is detected, the warming operation is switched to. . When "descaling" is selected, the boiling state is continued for a predetermined time for descaling even after the reboiling operation is started and boiling is detected, and then the heat retaining operation is switched to. In addition, when the user re-boiling switch 52 is pressed after selecting a plug "not shown" and "Good night 6" or "Good night 9" is selected, a predetermined time elapses so that the hot water will boil after 6 hours or 9 hours. After that, control for automatically starting the boiling heating operation is performed.

On the other hand, the heat retention selection switch 53 is for selecting the operation mode of the heat retention operation after the boiling heating operation to be described later is completed, and by repeating the pressing operation of this switch 53, the heat retention in the display section 55 is performed. The operation mode is switched. For example, if "98" is selected, 9
When 8 ° C. or “90” is selected, the above-mentioned microcomputer controls the energization of the heater unit 10 so that the hot water temperature is maintained at each heat retention temperature of 90 ° C.

Further, since the electric pot of this embodiment has an excellent heat-retaining performance by making the inner container 4 have a vacuum double structure, the temperature of the hot water can be maintained without electricity to the heater unit 10 after boiling. Is sufficiently suppressed. Therefore,
"Vacuum" is the warming operation mode that the user can select.
There is a heat retention mode. When this is selected,
The energization heating by the heater unit 10 is not performed, and the operation is switched to the heat retention only by the heat retention effect of the vacuum double structure. Even if this is selected, the hot water temperature is kept sufficiently high for a long time, and the power consumption is greatly reduced.

The cup-men timer switch 54 has a built-in buzzer (not shown), for example, by pressing the switch three times.
Is activated after 3 minutes, and the user is notified by sound of elapse of the set time. As shown in the figure, a push plate 25 is provided substantially at the center of the lid body 2, and the pouring lock knob 41a is formed on the side of the push plate 25 on the upper case 21. It is provided so as to be slidable back and forth inside the substantially rectangular opening.

In the electric pot having the above structure, water is poured into the inner container 4, the lid 2 is closed, and the plug is connected to the outlet. As described above, "good night 6" and "good night 9" are set by the reboil switch 52. If there is no mode selection, the power supply to the heater unit 10 is immediately started,
The water in the inner container 4 is heated. Then, when boiling is detected, the boiling state is continued for a predetermined time to remove descaling, and after this time has elapsed, the buzzer is activated to notify that the boiling water operation has ended, and at the same time, the predetermined heat retention temperature. It is automatically switched to the heat retention operation that is maintained at.

At this time, when the user selects the above-mentioned "vacuum" heat retention operation mode, power supply to the container body 1 becomes unnecessary. Therefore, at this time, the plug can be removed from the container body 1 and the electric pot can be freely carried to any place. Hot water supply in such a power supply stopped state is performed by pressing the push plate 25. That is, the pouring lock knob 41a is slid forward from the locked position to the unlocked position to release the locked state of the push plate 25, and by pushing the push plate 25, the bellows pump 2
The inside of the hot water storage space 1a is pressurized by the air supplied from 6, and the hot water inside is supplied through the pouring passage 15.

On the other hand, the electric pot in this embodiment is
Even after the above-mentioned boiling water operation is completed, hot water is supplied by pressing the push plate 25 in the same manner as described above, without removing the plug from the container body 1, and thus when the power supply state is continued. The electric pump 12 is energized in conjunction with the pressing operation, whereby a pouring operation in which the hot water supply power of the electric pump 12 is also applied occurs. Hereinafter, in this way the electric pump 1
A configuration for linking the operation of No. 2 with the pressing operation of the push plate 25 will be described.

Therefore, as shown by the broken line in FIG. 4, the switch shaft 61 extending from the pushing plate 25 side toward the pouring portion 1b side in the lid 2 transmits the downward displacement of the pushing plate 25. It is provided as a driven member of the displacement transmitting means. Further, an interlocking switch (detecting means) 62 including a micro switch is provided in the pouring part 1b. FIG. 1 shows a cross-sectional view along these arrangement positions.

The switch shaft 61 is inserted through the through holes formed in the wall surface 22a on the front surface side of the lower case 22 and the standing wall 22b standing upright in the lower case 22, and is supported substantially horizontally. There is. In addition, on the rear end side of the switch shaft 61, there are provided detent portions 61a that vertically project in a flat plate shape. By inserting these into the through holes of the standing wall 22b, a supporting state in which a detent is provided is provided.

A compression coil spring 63 for urging the switch shaft 61 rearward is provided between the anti-rotation portion 61a and the front wall 22a of the lower case 22. As a result, the switch shaft 61 has the detent portion 61a.
The rear end face is held at the retracted position where it abuts the rear standing wall 22b. In this retracted position, the front end side of the switch shaft 61 penetrates the front wall 22a of the lower case 22, the end face of which is located close to the inner wall 1c of the pouring portion, while the rear end of the switch plate 61 is the front face of the push plate 25. Side cylindrical wall 2
This switch shaft 61 is formed with a length dimension located on the lower side of 5b.

On the outer surface of the cylindrical wall 25b of the pushing plate 25, a shaft pushing rib 25d protruding forward is used as a main driving member of the displacement transmitting means for transmitting the displacement of the pushing plate 25.
The push plate 25 is integrally formed. This rib 25d
The lower end sides of the cylindrical wall 25b and the cylindrical wall 25b are formed as inclined pushing surfaces 25e that are inclined rearward toward the lower side, and the rear end surface of the switch shaft 61 is also formed so as to be inclined in the same direction as described above. .

On the other hand, in the inner wall 1c of the pouring portion, a through hole is formed at a portion where the front end face of the switch shaft 61 faces, and the through hole is provided with a switch packing 64 made of an elastic body for closing the through hole. It is installed. The interlocking switch 62 is attached to the switch substrate 51 in the pouring part 1b of the container body 1, and the other end of the switch lever 62a having one end attached to the switch 62 has the switch packing 64. It is configured to be located so as to face the front end surface of the switch shaft 61 with being sandwiched therebetween.

The lower molded body 23 of the lid body 2
In the circular wall surface 23a, a communication hole 23d is formed slightly forward of the central communication hole 23b so that the first passage 35 above the circular wall surface 23a and the second passage 38 below can communicate with each other. The check valve (negative pressure prevention valve) 65 made of an elastic body that opens and closes the communication hole 23d is the circular wall surface 2
It is attached to 3a. That is, when the pressure inside the first passage 35 is equal to or higher than the pressure inside the second passage 38, the check valve 65
Is held in a closed state with the communication hole 23 closed, and the first passage 3
When the pressure in 5 becomes lower than the pressure in the second passage 38, the check valve 65 is elastically deformed according to this pressure difference, and the first passage 35 and the second passage 38 communicate with each other. Is configured.

In the above structure, when the push plate 25 is pushed down, the lower ends of the cylindrical wall 25b and the shaft pushing rib 25d contact the rear end of the switch shaft 61 during the lowering operation of the push plate 25. With the subsequent lowering operation, the switch shaft 61 is pushed forward by the inclined pushing surface 25e. At the same time, switch shaft 6
The front end face of 1 contacts the switch packing 64 and pushes it forward, which causes the switch lever 62a to pass through the switch packing 64 that elastically deforms forward.
Is pushed, and the interlocking switch 62 is turned on. This ON signal is input to the above-mentioned microcomputer, and as a result,
Energization of the electric pump 12 is started. Therefore, thereafter, the hot water in the bellows 27 is supplied to the hot water storage space 1a, and the hot water supply power of the electric pump 12 is added to the hot water supply power, so that the hot water in the hot water storage space 1a is poured into the pouring passage 1
Hot water is supplied through 5. As a result, the amount of hot water supplied per unit time (hereinafter, simply referred to as the amount of hot water supplied) increases, and it becomes possible to pour the required amount of hot water in a shorter time.

In this case, the switch shaft 61 is pushed by the shaft pushing rib 25d at a position where the pushing plate 25 is pushed down to some extent, and at this point, the hot water supply by the electric pump 12 is started. . Therefore, if the push plate 25 is lightly touched, the electric pump 12
Does not work. Therefore, at the beginning of the operation of the push plate 25, a large amount of hot water, which is not expected by the user, is prevented from being suddenly discharged, which increases the safety when hot water is discharged. Secured.

On the other hand, the bellows pump 26 and the electric pump 1
When the amount of hot water supply required in combination with 2 is not required, the push plate 25 may be pushed to a position where the micro switch 62 is turned on and the push plate 25 may be held at this position. As a result, thereafter, the hot water supply state is switched to the electric pump 12 only. That is, at this time, the push plate 25
It is not necessary to push the push plate 25 to its lower limit position. Therefore, the push plate 25 at this time can be operated with a light touch, and the push plate 25 can be pushed without repeating the push operation of the push plate 25. Since the constant hot water supply state can be continued until the required amount is reached simply by holding the pressed position, the hot water supply amount can be easily adjusted and the usability is improved.

At this time, at the initial stage of pushing down the push plate 25, the flow passage switching valve 31 closes the communication hole 23b at the center of the circular wall surface 23a of the lower molded body 23, so that the inside of the hot water storage space 1a is closed. The communication state with the outside through the communication hole 23b is blocked. In this state, the electric pump 1
When the hot water supply by 2 continues and the amount of hot water in the hot water storage space 1a decreases, the pressure in the hot water storage space 1a decreases and becomes a negative pressure. As a result, a pressure difference in the direction opposite to the hot water supply direction occurs across the electric pump 12, and if this pressure difference increases, the hot water supply power of the electric pump 12 may decrease and it may not be possible to supply hot water.

Therefore, in this embodiment, in order to prevent the inside of the hot water storage space 1a from becoming negative pressure as described above, the pressure on the hot water storage space 1a side is greater than the external pressure on the circular wall surface 23a of the lower molded body 23. Also, a check valve 65 is provided which opens when the pressure falls. As a result, the inside of the hot water storage space 1a communicates with the outside through the communication hole 23d formed in the circular wall surface 23a. As a result, negative pressure in hot water storage space 1a is suppressed, and thus a stable hot water supply state by electric pump 12 is maintained.

Further, in the electric pot configured to supply hot water only by the conventional electric pump, when high-temperature hot water near 100 ° C. flows in the electric pump, the pressure slightly decreases on the suction side of the electric pump. Therefore, there is a case where hot water boils at this portion to cause cavitation, which causes the electric pump to idle so that hot water cannot be supplied. On the other hand, in the electric pot of the present embodiment, when the electric pump 12 is operated, the air from the bellows pump 56 is pumped into the hot water storage space 1a at the same time. As described above, it is possible to suppress the pressure drop such that the hot water boils, and therefore, the electric pump 1 does not decrease the hot water supply power due to the occurrence of such cavitation.
It is possible to maintain a stable hot water supply state according to 2.

On the other hand, in the electric pot of the above-described embodiment, the interlocking switch 62 to which electric wiring is applied is provided on the container body 1 side, and there is no component on the lid 2 side that requires electric wiring connection. Has become. As a result, the lid body 2 that is detachably attached to the container body 1 and is detachable
Since it is not necessary to provide an electrical connection mechanism or the like between the container lid 1 and the container lid 1, the overall configuration is simpler.

Further, in this case, the push plate 25 is attached to the lid 2.
The shaft pushing rib 25d descending together with this rib 2
With the configuration in which the switch shaft 61 that engages with 5d and is displaced in the substantially horizontal direction toward the container body 1 side is provided, the vertical dimension of the lid body 2 is the same as that of the conventional case without providing these exclusive spaces. Since the downward movement of the push plate 25 is transmitted to the container body 1 side and can be detected by the interlocking switch 62, it is possible to configure more compactly without enlarging the lid shape. Is. Further, since the shaft pushing rib 25d is formed integrally with the pushing plate 25, this also reduces the number of parts and simplifies the overall construction.

On the other hand, when the interlocking switch 62 is provided on the pouring part 1b of the container body 1, the switch lever 62a thereof is provided.
The leading end side of is provided so as to be located at a position recessed from the inner wall 1c of the pouring portion. Thereby, for example, the lid 2
Even when the switch is opened, the switch lever 62a is inadvertently touched by the hand and the electric pump malfunctions.
The reliability is improved by preventing the risk of damage due to impact when the is closed.

An opening is formed in the inner wall 1c of the pouring portion for transmitting the displacement of the switch shaft 61 to the switch lever 62a. A switch packing 64 is attached to this portion and the packing 64 is attached. Motion is transmitted via the. Therefore, the packing 64 prevents hot and cold water from entering the inside of the molten metal pouring portion 1b in which the electric parts are arranged, which also maintains good electrical reliability.

In addition, the above electric pot has a hot water storage space 1b.
As described above, since the inner container 4 that encloses the container is formed as a vacuum double container, the temperature drop can be sufficiently suppressed without special heating for keeping heat, and therefore the power supply is not connected after boiling. As it can be carried to any position and hot water can be supplied by manual operation of the bellows pump 26, the range of use is widened and usability is improved.

[Second Embodiment] Next, another embodiment of the present invention will be described with reference to FIG. For convenience of explanation, members having the same functions as those shown in FIGS. 1 to 4 will be designated by the same reference numerals and detailed description thereof will be omitted. The same applies to other embodiments described later.

As shown in FIG. 5, the electric pot according to this embodiment has a shaft pushing rib 25d provided on the cylindrical wall 25b of the pushing plate 25, and the front side of the shaft pushing rib 25d is formed into a two-step shape. In the process of pushing down the push plate 25,
The forward movement of the switch shaft 61 is configured to occur in two stages.

On the other hand, in the pouring section 1b, the first interlocking switch 62, which is a micro switch as described above, is provided.
Two switches, A and a second interlocking switch 62B, are provided. Regarding these switches 62A and 62B, with respect to the switch lever 62a provided in the same manner as described above, the first interlocking switch 62A is first turned ON as the switch lever 62a rotates.
After that, the second interlocking switch 62B is arranged to be turned on.

That is, when the push plate 25 is depressed, first, the first interlocking switch 62A is moved in the process of the switch shaft 61 moving forward by the first inclined pushing surface 25e on the lower end side of the shaft pushing rib 25d. Turns on.
When the rear end of the switch shaft 61 is in contact with the vertical surface 25f above the first inclined pushing surface 25e, only the first interlocking switch 62A is held in the ON state. When the push plate 25 is further pushed down from this state, the second inclined push face 2 above the vertical face 25f is pushed.
The switch shaft 61 moves further forward by 5 g. In this process, the second interlocking switch 62B is configured to be turned on. Then, in the above-mentioned microcomputer, the first and second interlocking switches 62A,
When both 62B are ON, the first interlock switch 6
The amount of electricity supplied to the electric pump 12 is increased more than when only 2A is ON, and thereby control is performed to increase the amount of hot water supplied.

As described above, the electric pot of this embodiment is constructed so that the hot water supply amount is switched depending on the amount by which the push plate 25 is pushed down. In this case, the hot water supply operation unit is integrated in one position of the push plate 25, and the hot water supply amount can be switched by the push plate 25 as described above, so that the usability is further improved. Moreover, since the number of constituent parts required to enable the switching of the hot water supply amount is as small as possible, the overall structure is simpler, and the manufacturing cost is lower.

[Third Embodiment] Next, still another embodiment of the present invention will be described with reference to FIGS. 6 and 7. In the electric pot according to the present embodiment, as shown in FIG. 6, the switch shaft 61 provided in the same manner as in the first embodiment is formed of a plastic magnet. An interlocking switch 62, which is a reed switch that is turned on / off according to a magnetic field, is provided at a position facing the front end surface of the switch shaft 61 with the pouring portion inner wall 1c interposed therebetween.

Also in this configuration, as in the first embodiment, when the switch shaft 61 is moved forward due to the pressing operation of the push plate 25, the interlocking switch 62 is turned on in response to the magnetic force accompanying this. Then, the electric pump 12 is energized. As a result, this electric pump 1
Hot water supply by 2 is started.

According to this structure, since it is not necessary to form the opening hole in the inner wall 1c of the pouring portion, there is no intrusion of the pouring water into the pouring portion 1b in which various electric parts are arranged. , Electrical reliability will be higher. Further, since the above-mentioned switch packing 64 is unnecessary, the number of constituent parts is reduced, and the assembling becomes easy.
The overall production cost can be further reduced.

In this embodiment, as shown in FIG. 7, a hot water supply lock switch 66 is further provided in the operation mode setting portion on the upper surface of the pouring portion 1b. Each time the switch 66 is pressed, the locked state and the unlocked state are switched (displayed by switching on / off of the pilot lamp). In the unlocked state, the pouring lock knob 41a is slid to the unlocked side and then the push plate 25 is pushed down in the same manner as described above, so that the electric pump 12 is also operated and hot water is supplied in conjunction with this.

On the other hand, when selecting the locked state by the hot water supply lock switch, when the push plate 25 is pushed down, even if the interlocking switch 62 is turned on in the middle of the operation, the state where the power supply to the electric pump 12 is stopped is maintained. The hot water is supplied only by the bellows pump 26 by further pressing down the push plate 25. Therefore, according to this structure, the user can switch between hot water supply using the bellows pump 26 and the electric pump 12 together and hot water supply by the bellows pump 26 without operating the electric pump 12. For this reason, for example, when there is a person who is accustomed to hot water supply by a manual operation, such as when adjusting the amount of hot water discharged with a feeling of a hand when pushing the push plate 25, the hot water supply form according to each person's preference can be set. Since the user can select, the usability is further improved.

Further, in this case, since the double lock structure is provided, the safety is further improved. That is, even if you forget to slide the pouring lock knob 41a to the lock position after the hot water supply operation, if the hot water supply lock switch 62 is in the locked state, for example, an infant or the like touches the push plate 25 carelessly. However, this push plate 25
The molten metal does not come out of the pouring portion 1b unless it is pushed down to a certain depth. As a result, unintended hot water discharge is prevented, and safety is improved.

[Fourth Embodiment] Next, still another embodiment of the present invention will be described with reference to FIGS. In the electric pot according to the present embodiment, as shown in FIG. 8, a switch shaft 61 and an interlocking switch 62 including a micro switch are provided in substantially the same manner as in the first embodiment. A locking solenoid 67 is arranged adjacent to the interlocking switch 62.

As shown in FIG. 9, the switch shaft 61 is formed with a spring receiving portion 61b which projects in the radial direction at a substantially intermediate position in the axial direction. This spring receiving portion 61b
And the front wall 22a of the lower case 22, the first compression coil spring 63A, and the spring receiving portion 61b and the lower case 22.
The second compression coil springs 63B are respectively arranged between the second compression coil springs 63B and the vertical walls 22b. These springs 63A and 63B
The switch shaft 61 is held in a neutral position where the spring forces of the two are balanced with each other.

In this state, the pouring lock knob 4 described above is used.
When 1a is slid to the unlocked position and the push plate 25 is pressed, the switch shaft 61 moves forward from the neutral position in the same manner as in the first embodiment. Along with this, the interlock switch 62 is turned on to energize the electric pump 12, and hot water is supplied by the electric pump 12.

In the present embodiment, when hot water supply is completed, the hand is removed from the push plate 25, and the push plate returns to its upper limit position for a predetermined time (for example, 20 seconds),
So that this push plate 25 is locked at its upper limit position,
The lock cylinder 41, to which the pouring lock knob 41a is connected, is automatically rotated to the lock position.

Therefore, the locking solenoid 67 is provided adjacent to the interlocking switch 62. After hot water supply is completed, remove the hand from the push plate 25,
When the switch 5 returns to its upper limit position, the interlocking switch 62 is switched from the previous ON state to the OFF state. From this point, after a predetermined time has elapsed, the microcomputer 67 energizes the locking solenoid 67 for a short time.

Along with this, the plunger 67a of the solenoid 67 rotates the switch lever 62a in the direction opposite to the direction in which the interlocking switch 62 is turned on. Then, as the switch lever 62a rotates in the opposite direction, the switch packing 64 projects and deforms toward the switch shaft 61, whereby the switch shaft 61, which has been located in the neutral position until then, moves backward. Is pushed.

On the rear end side of the switch shaft 61,
As shown in FIG. 10, a flat plate-shaped locking pushing protrusion 61c having a rear end face inclined is formed. It is to be noted that the same drawing is a plan view of the periphery of the push plate 25 shown by omitting the upper case 21 for explanation. The lock cylinder 41 is provided so as to surround the push plate 25 with the cylindrical wall 21a of the upper case 21 interposed therebetween. At the above-mentioned neutral position, the rear end side of the switch shaft 61 penetrates the notch opening 41b of the locking cylinder 41 rearward at the above-mentioned neutral position, and the rear end surface of the switch shaft 61 has the rear end surface of the shaft pushing rib of the pushing plate 25. It is located below 25d. When the switch shaft 61 is pushed rearward from the neutral position by the lock solenoid 67, the lock pushing protrusion 61c causes the inclined surface at the rear end to move to the right side in the drawing in the cutout opening 41b. While sliding in contact with the end face, it enters into the notch opening 41b.

In this way, the locking cylinder 41 and the pouring lock knob 41a connected to it while the switch shaft 61 moves backward to the position shown by the chain double-dashed line in the figure are shown by the arrows in the figure. In this way, the lock release position is moved to the lock position that prevents the pressing operation of the push plate 25 from being held, and is held. The lock solenoid 67 is energized only for a short time. Therefore, after the lock cylinder 41 is caused to rotate as described above, the switch shaft 61 returns to the neutral position.

As described above, in the electric pot of the present embodiment, when a predetermined time elapses after the push plate 25 is pressed to perform the hot water supply operation, the push plate 25 itself is automatically locked to prevent the push plate 25 from being pushed down. As a result, the unintentional discharge of high-temperature hot water is further reliably prevented, and safety is improved.

The specific embodiments of the present invention have been described above, but the present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the present invention. For example, in the above description, the configuration in which the shaft pushing rib 25d and the switch shaft 61 are provided as the displacement transmitting means for detecting the downward movement of the pushing plate 25 by the interlocking switch 26 provided on the container body 1 side has been taken as an example. It is also possible to configure with other mechanical transmission mechanism such as gear type, and in addition to the configuration in which the magnetically sensitive interlocking switch 26 such as the reed switch described in the third embodiment is provided as the detection means, For example, it may be configured by using an optical detection mechanism using a light emitting / light receiving element.

In the above description, the electric container in which the inner container 4 has a vacuum double structure has been described as an example, but the present invention can be applied to other electric pots with heat insulation specifications. Is.

[0097]

As described above, in the electric hot water storage container according to the present invention, the operation of the electric pump is configured to be interlocked with the manual operation of the air pump. It is not necessary to properly use the two operation units, that is, the operation unit and the electric hot water supply switch for operating the electric pump, depending on whether the power supply is connected or not, and therefore the operation becomes easy.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of an essential part showing the configuration of an electric pot on the upper front surface side according to an embodiment of the present invention.

FIG. 2 is a vertical cross-sectional view showing the overall configuration of the electric pot.

FIG. 3 is an enlarged cross-sectional view of the upper side of the electric pot.

FIG. 4 is a plan view of the electric pot.

FIG. 5 is a cross-sectional view of an essential part showing the configuration of the upper front surface side of the electric pot in another embodiment of the present invention.

FIG. 6 is a cross-sectional view of an essential part showing the configuration of the upper front surface side of the electric pot in still another embodiment of the present invention.

FIG. 7 is a plan view of the electric pot shown in FIG.

FIG. 8 is a plan view of an electric pot according to still another embodiment of the present invention.

9 is a cross-sectional view of main parts showing a configuration of an upper front surface side of the electric pot shown in FIG.

FIG. 10 is a partially cutaway plan view showing the configuration around the pressing plate with the upper case omitted in the electric pot shown in FIG.

[Explanation of symbols]

1 container body 1a Hot water storage space 1c Inner wall of pouring part (inner wall of container body) 2 lid 4 inner container 10 Heater unit (heating means) 12 Electric pump 25 push plate 25d Shaft pushing rib (displacement transmission means, driving member) 26 Bellows pump (air pump) 31 Flow path switching valve (open / close valve) 39 Steam passage 61 Switch shaft (displacement transmission means, driven member) 62 Interlocking switch (detection means) 65 Check valve (Negative pressure prevention valve) 66 Hot water lock switch

─────────────────────────────────────────────────── ─── Continuation of the front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) A47J 27 / 21,41 / 00-41/02

Claims (5)

(57) [Claims] 1. Hot water in a hot water storage space formed in the container body
Electric hot water storage vessel comprising a heating means for pressurized heat, an electric pump for the hot water supply of the hot water in the hot water storage space, and air pump for hot water under pressure to supply air to the hot water storage space manually by contraction deformation A detection means for detecting displacement when the air pump is manually operated, and an electric pump operation control means for operating the electric pump based on a detection signal from the detection means are provided. An air pump is provided on a lid mounted on the container body so as to cover the hot water storage space from above, and a push plate for pressing the air pump from above to cause contraction deformation is attached to the lid so as to be vertically movable. It is formed so that the detecting means detects the descending operation of the push plate and outputs a detection signal.The detecting means is provided in the container body, and the descending operation of the push plate is performed in the lid body. Electric hot water storage vessel, characterized in that is provided with a displacement transmission means for transmitting to the vessel main body. To 2. A lid, a main drive member descends together with the push plate, and a driven member which is displaced in a substantially horizontal direction toward the container body side by the downward movement of the engagement with the main rotary members to the main driving member above The electric hot water storage container according to claim 1, wherein the electric hot water storage container is provided as displacement transmitting means. 3. The electric hot water storage container according to claim 2 , wherein the main driving member is formed integrally with the push plate. 4. The electric hot water storage container according to any one of claims 1 to 3, wherein the detection means is provided at a position recessed from an inner wall surface of a container body surrounding the lid. 5. Hot water in a hot water storage space formed in the container body
Electric hot water storage vessel comprising a heating means for pressurized heat, an electric pump for the hot water supply of the hot water in the hot water storage space, and air pump for hot water under pressure to supply air to the hot water storage space manually by contraction deformation A detection means for detecting displacement when the air pump is manually operated, and an electric pump operation control means for operating the electric pump based on a detection signal from the detection means are provided. When the hot water supply lock switch for the electric pump is provided and the hot water supply lock switch is set to the operation stop mode for the electric pump, the electric pump operation control means energizes the electric pump even when the detection signal from the detection means is input. An electric hot water storage container, which is controlled to maintain a stopped state.