JPH0516991Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Field of Application> The present invention relates to a kettle that utilizes air pressure to discharge liquid within an inner container using air pressure.

<Conventional technology> Conventionally, a water kettle pot using air pressure has a bottomed cylindrical inner wall with a wide opening at the upper end and a narrow opening at the front of the lower end, and a band heater is stretched around the bottom outer periphery of this inner wall. An outer wall is provided on the circumferential side of the upper inner wall to form a double inner and outer wall vacuum inner container, and a shoulder member is attached to the upper end of the outer case surrounding the inner container,
A bottom member is attached to the lower end of the outer case, and a lid body with a built-in bellows pump that covers the wide mouth of the inner container and supplies pressurized air into the inner container by pressing is detachably attached to the upper end of the shoulder member. A liquid discharge mechanism is provided to heat the liquid inside with a band heater and discharge the liquid to the outside.The liquid discharge port of this liquid discharge mechanism is communicated with the narrow opening of the inner wall, and a vapor temperature detection device is installed at the rear of the shoulder member. A first thermistor and a second thermistor for liquid temperature detection are provided outside the center of the bottom of the inner wall,
Both thermistors were used to turn the heater on and off, but in this type of water kettle, the heater, liquid outlet, and second thermistor are installed far apart from each other, and the liquid outlet is located at the lowest point in the inner container. Since the heater was provided at the front of the lower end of the inner wall at the bottom of the heater to indicate the temperature, and the second thermistor was provided outside the center of the bottom of the inner wall, the second thermistor, which does not directly sense the liquid temperature, senses not only the inner wall temperature but also the outside temperature at the same time. The temperature of the liquid to be sensed is greatly affected by the external temperature, making it very difficult to select the second thermistor and making it impossible to measure the stability of the product. Further, since the second thermistor and the liquid outlet are separated from each other, the liquid is directly affected by the temperature range of the liquid in the inner container, and the liquid is discharged at the lowest temperature.

<Purpose of the invention> The object of the invention is to provide a water boiling pot that utilizes air pressure and eliminates the above-mentioned disadvantages through simple improvements.

<Structure of the invention> The present invention is a metal cap-shaped container in which a hollow liquid ejection tube communicating with a liquid discharge mechanism is tightly attached to the narrow opening at the center of the lower end of the inner container, and a second thermistor is tightly installed inside the inner container. The objective is to be achieved only by providing a cap-shaped container from the lower end of the liquid take-out cylinder, passing through the inside of the liquid take-out cylinder and vertically extending it into the inner container in a watertight manner.

<Embodiments of the invention> Hereinafter, embodiments of the invention will be described based on the drawings. A water kettle pot 1 that uses air pressure includes a wide-mouthed inner container 2 and an outer case 3 that houses the inner container 2.
and a shoulder member 4 attached to the upper end of this exterior case 3.
and a bottom member 5 attached to the lower end of the exterior case 3.
a lid body 6 that freely covers the wide mouth of the inner container 2;
A heater 8 that heats the liquid in the inner container 2, a liquid discharge mechanism 9 that discharges the liquid in the inner container 2, a first thermistor 10 that detects the temperature of boiled steam in the inner container 2, and an inner container 2. The second thermistor 11 detects the temperature of the liquid inside.

The inner container 2 has a double wall structure consisting of an inner wall 2a and an outer wall 2b made of thin stainless steel plates, etc., and provides vacuum insulation between the inner and outer walls.

The inner container 2 has a wide opening at the upper end and a narrow opening opening vertically at the center of the lower end.

The exterior case 3 is made by bending a thin metal plate into a cylindrical shape, with its upper end bent inward in steps and its lower end curled inward.

The shoulder member 4 has a central opening, and has a ring-shaped receiving portion 12 placed on the step of the outer case 3, a pivot portion 13 for a lid body 6, which will be described later, on the back side, and a beak portion 14 on the front side. It is set up. A decorative member 15 is connected to the lower part of the beak portion 14, and a transparent window portion extending in the vertical direction is formed in the decorative member 15.

The bottom member 5 is attached to the lower curled part of the outer case 3, and includes a bottom body 16 with an open center, and a bottom body 16 that is open at the center.
It consists of a bottom bottom 17 that closes the central opening of the bottom.

18 is a power plug.

The lid body 16 is formed into a hollow block body by a bowl-shaped lower lid 19 made of synthetic resin that is loosely fitted into the shoulder member 4, and an upper lid 20 that covers the upper part of the lower lid 19. The lid is pivoted to the pivot of the member 4 via a pivot, and the lid is rotatable about the pivot, thereby allowing the wide mouth of the inner container 2 to be opened. It should be noted that a locking/disengaging mechanism 22 is provided on the front side of the lid body 6, and is connected to and disconnected from the shoulder member 4.

A bellows pump 23 is provided inside the lid 6, and the cylindrical lower edge of the bellows pump 23 is welded to the upper surface of the lower lid 19, and the peripheral edge of an upper edge plate 24 is fixed to the cylindrical upper edge. ing. The upper end plate 24 forms a guide cylinder part 25 that projects into the bellows pump 23, and a valve cylinder 26 is slidably inserted into the guide cylinder part 25.

The lower end of the valve cylinder 26 is inserted into a central pressurized air supply port provided in the lower lid 19, and a valve body 28 made of an elastic body that expands to a large diameter below the pressurized air supply port is inserted into this insertion end. It is equipped with

Inside the bellows pump 23, the lower lid 19
A bellows pump return member 29 made of a compression coil spring is interposed between the upper end plate 24 and the upper end plate 24, and always pushes up the upper end plate 24 and urges the bellows pump 23 in a direction to expand. The valve cylinder 26 is provided with a locking part that is locked to the guide cylinder part 25 in an extended state, and presses the valve body against the pressurized air supply port of the lower lid 19 when the bellows pump 23 is expanded.

A pusher body 31 is slidably inserted into an open cylindrical portion located above the upper end plate 24 and opened in the upper lid 20. When the locking pawl formed on the outer peripheral edge of the lower end of the pusher body 31 is engaged with the lower edge of the opening cylindrical portion, the pusher body 31
The top surface of is substantially flush with the top surface of the upper lid 20, and the pusher body 31 does not protrude further upward.

On the other hand, a locking member 32 is rotatably fitted on the outer periphery of the opening cylindrical portion, and when the locking member 32 is rotated in one direction via the knob 33, the lower end locking pawl of the locking member 32 is pushed. It can be locked to the lower surface of the locking claw of the body 31 to make it impossible to push down the pusher body 31.

On the other hand, when the locking member 32 is rotated in the other direction, the locking pawl is unlocked and the pushing body 31 can be pushed down.

A contact portion is formed at the lower part of the push body 31, and a push body return member 34 made of a compression coil spring having a spring constant smaller than that of the bellows pump return member 29 is provided between the contact portion and the bottom surface of the valve cylinder 26. is interposed,
The pushing body 31 is always urged upward.

Reference numeral 7 denotes a steam exhaust flow path, and a flow path configuration first member 35 in which a supply/exhaust flow path and a first flow path for steam exhaust are formed.
is attached to the support tube around the pressurized air supply port connected to the lower surface side of the lower lid 19, with the steam inlet of the first flow path having a small gap directly below the valve body 28. On the other hand, on the inner container 2 side of the lid 6, a cover 37 made of stainless thin steel plate or the like is provided on the lid 6, except for the air inlet of the air supply/exhaust flow path, and is removably attached to the lid 6 with screws. The lid body 6
This forms a depressurized space that communicates with the inner container 2 via the supply/exhaust flow path and the first flow path, and a second steam exhaust flow path that communicates this depressurized space with the outside of the lid body 6. The second member forming the flow path is provided on the opening/closing base side of the lid 6.

According to this configuration of the steam exhaust passage 7, the inner container 2
The steam generated inside is introduced into the depressurized space through the supply/exhaust flow path and the first flow path of the first member 35 forming the flow path, and then passes through the second flow path of the second member 35 forming the flow path to the lid body. The pressure of this steam is expanded and decompressed twice: when it is introduced into the depressurized space and when it is discharged to the outside of the lid 6.

In addition, in conjunction with the initial pressure on the bellows pump 23, the bellows pump 23 is reversibly pressed.
The pressurized air supply port of the first flow path is opened and, at about the same time, the steam inlet of the first flow path is closed.

Reference numeral 39 denotes a drain passage connected to the second member constituting the flow passage, and this drain passage 39 is formed into a cylindrical shape from an elastic material such as rubber, and the tail end of this cylindrical portion is connected to the second member constituting the flow passage. The cylindrical part is inserted into an insertion hole formed on the back of the cylindrical part in a watertight manner, and the tip of this cylindrical part is fitted into an insertion hole formed in the upright wall of the lower cover 19 for insertion.
The tip opening edge of this cylindrical portion is made to protrude from the back of the upstanding wall. Therefore, when the lid body 6 is closed, the tip opening edge of the drain flow path 39 touches the receiving part 12 of the shoulder member 4.
It is brought into close contact with the inner circumferential wall of the rear end, and is configured to have a positional relationship that closes the tip opening of the drain flow path 39 in a watertight manner.

That is, at the time of this closure, the edge of the tip opening is elastically compressed and deformed and comes into close contact with the inner circumferential wall of the shoulder member 4 in a watertight manner, so that steam from the second member constituting the flow path flows out from the edge of the tip opening of the drain channel 39. However, the inner circumferential wall of the receiving portion 12 of the shoulder member 4 and the area around the pivot shaft will not get wet.

On the other hand, it is preferable that the tip opening edge of the drain flow path 39 is provided as far as possible below the pivot of the lid 6, so that when the lid 6 is opened with the pivot as a fulcrum, the lid 6 The inner container 2 faces downward and opens into the upper space of the inner container 2 . That is, when the lid is opened, it is most desirable that the tip opening edge be located in the space above the upper opening of the inner container 2, and at least be located above the central opening of the shoulder member 4, and within the second member constituting the flow path. When the water accumulated in the pot drips from the edge of the opening through the drain channel 39, it is sufficient that the water droplets are in a position where they can return to the inner container 2 without overflowing to the outside of the pot.

A valve body receiving material 40' is incorporated in the water stop valve chamber of the second member constituting the flow path, and a valve body 41' formed in a block shape from a heavy material such as stainless steel is attached to the valve body receiving material 40'. It has been inserted. That is, the set of component parts of the valve body receiver 40' and the valve body 41' is the same as the set of component parts of the valve body receiver 40 and the valve body 41 provided in the liquid discharge mechanism 9, which will be described later. The same one is still used. Therefore, a narrow passage is formed between the outer periphery of the valve body 41' and the valve body receiving member 40' by the ribs in the radial direction, and normally the steam in the steam discharge passage 7 is discharged from the valve body. The water passes from the lower inlet of the receiving member 40' through the narrow passage to the water stop valve chamber and is discharged from the outside air port, while when the pot falls over, the valve element 41' moves inside the valve element receiving member 40'. By moving and closing the outside air port, a large amount of liquid in the inner container 2 is prevented from leaking out from the outside air port via the vapor discharge channel 7.

The liquid discharge mechanism 9 includes a liquid ejection tube 4 that is watertightly attached to the inner container 2 so as to pass through the lower narrow opening of the inner container 2.
2, a lower first elbow tube 43 that communicates with the liquid extraction tube 42, a horizontal tube 44 that communicates with the lower first elbow tube 43, a lower second elbow tube 45 that communicates with the horizontal tube 44, and a lower second elbow tube. A water pumping pipe 46 that communicates with the pipe 45 and an upper elbow pipe 4 that communicates with the water pumping pipe 46.
7, and a valve body receiving member 40 that communicates with the upper elbow pipe 47.
, an upper valve chamber 49 communicating with the valve body receiving material 40 , a discharge cylinder 48 communicating with the upper valve chamber 49 , and a valve body receiving material 4
0 and a valve body 41 inserted between the valve chamber 49 and the upper valve chamber 49.

The liquid take-out cylinder 42 is connected to the inner container 2 as shown in FIG.
It is formed into a hollow body that can be inserted through the narrow opening at the center of the bottom of the holder, and has a flange portion 51 extending outwardly at the upper end, and a screw is cut into the lower outer circumferential wall. This liquid extraction cylinder 42 is inserted from inside the inner container 2 toward the opening, and a first seal packing 5 is attached to the lower end of the flange portion 51.
2 is in tight contact with the inside of the inner wall 2a of the inner container 2 in a stretched state, and a nut 53 is screwed onto the outer circumferential wall of the liquid take-out cylinder 42 from outside the inner container 2.
4. Outer wall 2b of inner container 2 via washer 56
It is tightly fixed on the outside.

Lower first elbow tube 43, lower second elbow tube 4
5. The upper elbow tube 47 is made of an elastic material.

The water pump cylinder 46 is installed at the rear of a vertically extending transparent window of the decorative member 15, and displays the amount of liquid in the inner container 2.

A narrow passage is formed between the outer circumference of the valve body 41 and the inner circumference of the valve body receiving member 40 by ribs in the radial direction. When air is supplied, the liquid in the inner container 2 reaches the lower inlet of the valve body receiving member 40 through various cylinders, passes through the upper valve chamber 49 through the narrow passage from here, and enters the discharge cylinder 48. It is poured out from.

On the other hand, when the pot falls over, the valve body 41 moves within the valve body receiving member 40 and closes the water outlet of the upper valve chamber 49, so that the liquid in the inner container 2 passes through the liquid discharge mechanism 9 and exits from the discharge cylinder 48. Prevent large amounts of leakage.

A heater 8 for heating the liquid in the inner container 2 is provided on the lower surface of the bottom of the inner wall 2a of the inner container 2, and a lead wire of the heater 8 passes through the outer wall 2b in an airtight manner and is connected to the power plug 18. . This heater 8
has an output of about 500 W when fully heated and about 18 W when kept warm, and together with the vacuum double container structure of the inner and outer walls 2a and 2b, when keeping the temperature after boiling, the liquid is suitably kept warm.

The first one detects the temperature of boiling steam in the inner container 2.
The thermistor 10 is loaded into a metal cap body, and in this state, the outer peripheral wall and inner peripheral wall of the rear part of the receiving part 12 of the shoulder member 4 are inserted, and the tip of the cap body of the detection part of the first thermistor 10 is inserted. It protrudes into the inside of the edge of the opening at the tip of the drain flow path 39 . The rear part of the cap body of the first thermistor 10 is held by a cover member 50, and by fitting the cover member 50 to the rear end of the shoulder member 4, there is a gap between the outer peripheral wall of the rear part of the receiving part 12 and the cover member 50. keeping. The lead wire of the first thermistor 10 passes between the outer peripheral edge of the shoulder member 4 and the cover member 50 and further hangs down to be indirectly connected to the power plug 18.

The second thermistor 11 that detects the heating temperature of the liquid in the inner container 2 is loaded in a metal cap-shaped container 55, and the lower end of this cap-shaped container is connected to the liquid extraction tube of the lower first elbow tube 43. 42 in a watertight manner, and the upper end of the cap-shaped container 55 passes through the liquid take-out cylinder 42 and projects above the liquid take-out cylinder 42. and,
A lead wire of this second thermistor 11 is connected to a power plug 18.

When the liquid in the inner container 2 is heated by the heater 8, the second thermistor 11 directly heats the liquid in the inner container 2.
detecting the temperature of the liquid inside the inner container 2, and detecting the temperature of the boiling steam inside the inner container 2 by the first thermistor 10;
When an abnormal temperature is detected by both thermistors 11 and 10, the heating of the heater 8 is controlled to maintain the temperature of the liquid in the inner container 2 at a constant temperature.

<Effects of the invention> In the present invention, the second thermistor is housed inside the cap-like container, and this second thermistor is placed directly into the liquid in the inner container via the cap-like container, so that external heat is not absorbed. Since the temperature of the liquid inside the inner container can be sensed without being affected by any influence, the difference in sensing temperature is small, making it easy to select the thermistor, making it possible to measure the stability of the product, and always keeping the temperature within a narrow range. can eject liquid.

Furthermore, the second thermistor can be replaced extremely simply by simply removing the cap-shaped container from the lower end of the liquid extraction cylinder.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view of an embodiment of the present invention, and FIG. 2 is an exploded perspective view showing the main parts of the present invention. 1...Kettle pot, 2...Inner container, 2a...
...Inner wall, 2b...Outer wall, 3...Exterior case, 4...
... Shoulder member, 5 ... Bottom member, 6 ... Lid, 8 ... Heater, 9 ... Liquid discharge mechanism, 10 ... First thermistor, 11 ... Second thermistor, 18 ... Power plug, 23 . . . Bellows pump, 42 .
Watsiyah.

Claims (1)

[Scope of utility model registration request] An inner container with a wide mouth at the center of the upper end and a narrow opening at the center of the lower end has double inner and outer vacuum walls, a shoulder member is attached to the upper end of the outer case surrounding the inner container, and a bottom member is attached to the lower end of the outer case. A lid with a built-in bellows pump that covers the wide mouth of the inner container and supplies pressurized air into the inner container when pressed is attached to the upper end of the shoulder member, and a heater that heats the liquid in the inner container is installed. A liquid discharge mechanism is installed between the inner and outer walls of the vacuum double wall, and discharges the liquid inside the inner container to the outside through a narrow opening at the center of the lower end of the inner container. In a water boiling pot that uses air pressure to turn on and off the heater with a second thermistor, a hollow liquid ejection tube communicating with the liquid discharge mechanism is tightly attached to the narrow opening at the center of the lower end of the inner container; A metal cap-like container is provided in which a second thermistor is tightly housed, and the cap-like container is watertightly placed vertically from the lower end of the liquid take-out cylinder through the inside of the liquid take-out cylinder and into the inner container. A kettle that uses air pressure to heat water.