JPH0436755Y2 - - Google Patents

Description

[Detailed explanation of the idea]

[Industrial Application Field] The present invention relates to an air-type thermos for boiling hot water in which hot water is boiled in a vacuum double container equipped with a heating element, and the hot water is flowed out of a spout using compressed air from an air pump. [Prior art] Conventionally, as a device of this kind, Utility Model Application No. 61-41635
The electric pot of No. 1 is known. As shown in FIG.
Outer cylinders 62 and 63 are provided, and a heating element 64 heats and keeps the liquid in the inner cylinder 62 warm, and the heating element 64 is turned on and off by sensing the liquid or atmospheric air in the inner cylinder 62.
A heating element 64 is fixed to the bottom of the inner cylinder 62 from the lower end opening of the inner cylinder 62, and a screw ring 67 is connected to the inside of the lower end of the exterior body 66 surrounding the inner cylinder 62. A tightening member 68 for pushing up the bottom of the inner cylinder 62 is screwed onto the ring 67, and a bottom plate 69 surrounding the tightening member 68 is attached to the lower end of the tightening member 68 with a gap between the tightening member 68 and the tightening member 68.
A lid body 71 containing an air pump 70 is provided above the upper opening. In addition, a vacuum layer is provided between the inner cylinder and the outer cylinder, and a heating element is used to boil the liquid such as water in the inner cylinder, and an air pump is operated to heat the liquid through a pumping channel whose one end communicates with the inside of the inner cylinder. A pot disclosed in Japanese Utility Model Application Publication No. 61-54730 is known as an air-powered thermos for pouring hot water from a pouring spout. This pot has a vacuum double container made of metal with vacuum insulation inside and outside, and a heater is installed at the bottom of this container to heat and keep the liquid inside the container warm, and the liquid inside the container is discharged to the outside. A cover plate is provided to fix the discharge member and cover the mouth of the metal container, a cover body with a built-in bellows pump is provided, a cover plate with a central opening that covers the lower surface of the cover body and communicates with the bellows pump is provided, It is equipped with a temperature regulator that detects the boiling temperature and heat retention temperature. In addition, in Japanese Utility Model Publication No. 60-28346, a heater dedicated to heating and keeping warm is wound around the outer circumference of the lower end of a single tank to boil water and keep it warm, and an inlet communicating with the inside of the tank is placed at one end, and a pot is placed at the other end. A steam escape passage having a steam hole facing the outside from a certain position is provided, and an opening/closing body is provided to open and close this steam escape passage in response to the movement of the bellows, and the generated steam is released from the steam hole provided in the upper cover near the pushing body An air-type water boiling pot is disclosed in which an appropriate amount of hot water in the container is taken out from the spout by discharging the water and compressing the bellows. [Problems with the Prior Art] By the way, in the case where the lid 71 is provided above the mouth 61A of the vacuum double container 61 as described above, the heat insulating plate 72, such as a metal plate, covers the mouth 61A.
This is to insulate the upper part of the vacuum double container 61. However, such a heat insulating means using the heat insulating plate 72 has a problem that the heat insulating effect is low and the heat retention is poor. Furthermore, a heat insulating plate 7 is attached to the mouth 61A of the vacuum double container.
1, and a lid 71 containing an air pump 70 is provided above the heat insulating plate 71, which results in a relatively high overall height, resulting in problems such as poor stability. In the case of Utility Model Application Publication No. 61-54730, a large amount of steam generated by boiling water passes through the inner stopper, passes through the bellows, and is discharged from the steam vent hole provided at the top of the pushing body. The problem of thermal deterioration arises. In addition, since steam is discharged from the top of the pusher, there is a risk of accidental contact with the steam and burns. Furthermore, the lid made of stainless steel located under the bellows is used to secure the inner stopper, and no consideration is given to heat damage at the mouth, and the hot water is kept warm by a heat-retaining heater. In addition, the air-type water kettle disclosed in Japanese Utility Model Publication No. 60-28346 is equipped with an opening/closing body that controls the steam passageway to prevent the rise in pressure within the container due to generated steam and to prevent thermal deterioration of the bellows. Since the discharged steam is discharged from the steam hole provided in the upper cover near the pusher, there is a risk of burns if touched accidentally when the pusher is operated. In addition, since the pot consists of a single container with no insulation structure and a lid with no insulation structure, the temperature of the hot water will drop unless the heater is constantly energized, which is uneconomical. . [Means for Solving the Problems] The present invention consists of a metal vacuum double container with a mouth formed at the upper end, a heating element for heating a liquid provided in the vacuum double container, and the vacuum double container described above. a lid removably installed at the mouth of the container; a bellows-type air pump installed inside the lid for pumping air into the vacuum double container;
a stainless steel cover provided on the lower surface of the lower part of the lid; and a stainless steel cover provided inside the lid and outside the air pump, one end connected to the lower part of the lid, and the other end opened into the spout cover. A steam exhaust path, a steam detector provided in the middle of the steam exhaust path or outside the exhaust port to control power supply to the heating element, one end connected to the bottom of the vacuum double container and the other end connected to the spout. and an opening/closing body that opens and closes the steam discharge passage in response to the air pump, and the lower end of the lid body is inserted into the mouth part, and the lower end of the air pump is connected to the upper edge of the mouth part. The steam exhaust passage and at least a part of the opening/closing body are provided below the upper edge of the mouth. [Function] The lower part of the lid is deeply recessed into the mouth of the vacuum double container, which increases the heat conduction distance.
The heat retention effect can be increased. [Example] Hereinafter, an example of the present invention will be described based on the accompanying drawings. In the figure, 1 is a vacuum double container, which consists of an inner cylinder 2 with a stainless steel bottom and an outer cylinder 3.
A vacuum layer 4 is provided between the inner cylinder 2 and the outer cylinder 3. The bottoms of the inner cylinder 2 and the outer cylinder 3 are connected by a Π (inverted cup)-shaped connecting member 5. The bottom surface of the connecting member 5 is brazed in contact with the bottom outer surface of the inner cylinder 2, and the mouth edge of the connecting member 5 penetrates the outer cylinder 3 and is brazed to the outer cylinder 3. A plate-shaped heater 6 which is a heating element having a neck is provided inside the inner cylinder 2, and the neck of the heater 6 is passed through the inner cylinder 2 and the outer cylinder 3, and is attached watertightly with a nut 7. There is. 6A is a thermostat for keeping warm, and 8 is a packing. Note that the heater 6 is connected to a power source at a predetermined location. Further, a communication pipe 9 passing through the inner cylinder 2 and outer cylinder 3 is attached to the inner cylinder 2 and the outer cylinder 3 in a watertight manner by welding. Inner cylinder 2 of this communication pipe 9
One inner end of the heater 6 is located a predetermined distance above the upper surface of the heater 6, and the other end projects outside the outer cylinder 3.
Both ends of the communication pipe 9 are gently tapered to a slightly smaller diameter than the middle part of the communication pipe 9, so that they can be easily fitted into the inner cylinder 2 and the outer cylinder 3 during manufacturing, and are connected to the lower end of the communication pipe 9. It is made easy to fit into the elbow 10. Reference numeral 11 denotes an exterior body that houses the vacuum double container 1. A transparent glass pipe 14 rising upward is guided and connected to the communication pipe 9 via elbows 10 and 12 made of silicone rubber and a stainless steel pipe 13 so as to extend along the side surface of the outer cylinder 3.
A water stop mechanism 16 is connected to the upper end of the glass pipe 14 via a joint 15 above the water level when the water in the inner cylinder 2 is at its maximum level. The elbows 10, 12, stainless steel pipe 13, glass pipe, etc. 14 form a pumping channel 18 leading to a spout 17, which will be described later. A water pipe 20 is connected to the upper end of the water stop mechanism 16 via an elbow 19 made of silicone rubber.
It communicates with a pouring spout 17 which is formed in and opens downward. A window 21 made of transparent acrylic is provided at a position of the exterior body 11 corresponding to the glass pipe 14, and the water level in the glass pipe 14, which indicates the amount of water in the inner tube 2, can be seen through this window 21. There is. Further, a lid 23 made of synthetic resin is removably provided on the mouth 22 of the vacuum double container 1, and a lower part 24 of the lid 23 is attached to the upper edge 22 of the mouth of the vacuum double container 1.
Fits below A. This lid body 23 is the exterior body 1
A female screw 25 is formed on the circumference near the upper edge of the lid body 23, and a male screw 26 is formed on the outer peripheral surface of the lid body 23, and the lid body 23 is attached by these screws 25 and 26. A stainless steel cover 23A is provided on the outer surface of the lower part 24 of this lid body 23.
Attach. A base plate 27 is installed horizontally in the middle of the lid 23, a movable plate 28 is horizontally installed above the base plate 27, and a bellows-type air pump 29 that is freely expandable and retractable is provided between the movable plate 28 and the base plate 27. A return spring 30 is installed inside the bellows type air pump 29. On the movable plate 28 is a pusher body 31 in the shape of an inverted cylinder with a bottom that appears on the top surface of the lid body 23.
is inserted into the recess 32 so as to be vertically movable. and 33
is interposed between the movable plate 28 and the pusher 31, and the pusher 31
This is a spring that urges the Also, press body 3
A cylindrical body 34 is installed vertically at the center of the back side of 1, and this cylindrical body 3
4, the opening/closing body 35 is inserted so as to be vertically movable. This opening/closing body 35 has a cylindrical shaft portion 36 at the top and an opening/closing main body 37 at the bottom. 37A is the opening/closing main body part 37
It is a packing that has been fitted into the. This opening/closing main body part 3
7 is located below the mouth upper edge 22A. Reference numeral 38 denotes an edge fixedly provided inside the lower end of the cylindrical body 34, and 39 denotes a locking protrusion formed outside the upper end of the cylindrical shaft portion 36 and capable of locking with the edge 38. Further, a pressing spring 40 is provided between the bottom of the cylindrical shaft portion 36 and the back surface of the pushing body 31. At the lower part 24 of the lid body 23, one end is connected to a communication port 41 opened in the lower part 24, and the other end is connected to an exhaust port 43 facing inside the spout cover 42, so that a steam exhaust path 4 is provided.
form 4. Further, an L-shaped partition wall 45 is formed above the communication port 41, and this partition wall 45
A communication hole 46 for communicating the communication port 41 and the steam exhaust path 44 is formed in the horizontal portion 45A, and a ventilation hole for communicating the communication port 41 with the inside of the bellows type air pump 29 is formed in the vertical portion 45B. 47 and further faces the communication hole 46.
A guide hole 48 is provided at a portion 7 for guiding the opening/closing main body 37 so that the communication hole 46 can be opened and closed. That is, regarding the opening/closing main body part 37, the communication hole 46, and the ventilation hole 47, the ventilation hole 47 is normally closed by the opening/closing main body part 37 and the packing 37A, while the communication hole 46 is opened to discharge the steam S. On the other hand, press body 31
When pressed, the opening/closing main body 37 closes the communication hole 4.
6 is closed, the vent hole 47 is opened, and air can be pumped into the vacuum double container 1 by compression by the bellows type air pump 29. Further, a heat insulating material 49 is provided near the inner lower portion 24 of the lid body 23. This insulation material 49 is the vacuum double container 1
The lower end 29A of the bellows type air pump 29, the lower part of the steam exhaust passage 44, the opening/closing main body 37, and the packing 37A are set below the upper edge 22A of the mouth. It is possible to increase the heat retention effect by reducing the amount of heat. Furthermore, by inserting not only the lower part 24 of the lid body 23 but also the lower end 29A of the bellows type air pump 29 at a position below the upper edge 22A of the mouth part,
Overall height can be lowered and stability can be improved. Also, a bellows type air pump 2 provided on the lid body 23
By inserting the lower part of the opening/closing body 35, the packing 37A, and the guide hole 48 that respond to the operation of step 9 into a position below the upper edge 22A of the mouth of the vacuum double container 1,
Overall height can be lowered and stability can be improved. Moreover, by inserting not only the lower part 24 of the lid 23 but also the lower end 29A of the bellows type air pump 29 at a position lower than the upper edge 22A of the mouth part, the thickness of the lid 23 is increased and the lower part 24 of the lid 23 is inserted. By installing the heat insulating material 49 inside, the heat insulating material 4
9 can exhibit the insulation effect at the mouth part 22,
Higher heat retention is possible. In addition, a stainless steel cover 2 is attached to the lower part 24 of the lid body 23.
By attaching 3A, the lower part 24 of the lid body 23
Thermal deterioration of the synthetic resin member forming the holder can be prevented, limescale etc. are less likely to adhere, improving sanitary conditions, and the steam generated during boiling can be discharged into the spout cover 42, making it possible to avoid contact with steam when the presser body 31 is installed. It can be used safely without causing burns. Next, experimental results related to the present invention will be explained. condition

【table】

[Table] As shown above, high heat retention can be achieved by setting the heat conduction distance L to 10 mm or more.

[Table] As shown above, by setting the heat conduction distance L to 10 mm or more, the heat retention capacity is approximately half that of the 35W power consumption of a single-layer container during heat retention. [Effects of the invention] The present invention comprises a metal vacuum double container with a mouth formed at the upper end, a heating element for heating the liquid provided in the vacuum double container, and a heating element provided in the mouth of the vacuum double container. a removably installed lid; a bellows-type air pump installed inside the lid for pumping the vacuum double container; a stainless steel cover installed on the lower surface of the lid; A steam exhaust path is provided on the outside of the air pump, one end is connected to the lower part of the lid body, and the other end is opened inside the spout cover, and a steam exhaust path is provided in the middle of this steam exhaust path or outside the exhaust port, and a steam detector that controls the power supply of the
A pumping channel has one end connected to the bottom of the vacuum double container and the other end connected to the spout, and an opening/closing body that opens and closes the steam exhaust channel in response to the air pump, and the lower part of the lid body is connected to the The air pump is inserted into the mouth, the lower end of the air pump is provided below the upper edge of the mouth, and at least a part of the steam exhaust passage and the opening/closing body are provided below the upper edge of the mouth. Compared to the above, it is possible to improve heat retention by increasing the heat conduction distance at the spout, and also to provide a compact and highly stable air-type water boiling thermos flask.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view of the present invention, and FIG. 2 is a longitudinal sectional view of a conventional example. 1... Vacuum double container, 6... Heater, 17...
Outlet, 18... Pumping channel, 22... Mouth, 22A
... Upper edge of mouth, 23 ... Lid body, 23A ... Stainless steel cover, 24 ... Lower part, 29 ... Bellows type air pump, 29A ... Lower end, 35 ... Opening/closing body, 44 ... Steam exhaust path , 49...Insulating material, 50
...Thermostat (steam detector), L...Heat conduction distance, S...Steam, W...Water.

Claims (1)

[Claims for Utility Model Registration] (1) A metal vacuum double container with a mouth formed at the upper end, a heating element for heating a liquid provided in the vacuum double container, and an opening of the vacuum double container. a bellows-type air pump that is installed inside the lid and pumps air to the vacuum double container; a stainless steel cover that is installed on the lower surface of the bottom of the lid; and a steam exhaust passage provided outside the air pump, one end of which is connected to the lower part of the lid body and the other end of which is open inside the spout cover; , a steam detector that controls the power supply to the heating element, a pumping channel whose one end is connected to the bottom of the vacuum double container and the other end to the spout, and which opens and closes the steam exhaust channel in response to the air pump. the lower end of the lid body is inserted into the mouth, the lower end of the air pump is provided below the upper edge of the mouth, and at least a part of the steam exhaust path and the opening and closing body are inserted into the mouth. An air-type water boiling thermos characterized by being installed below the upper rim. (2) The air-type water boiling thermos flask according to claim 1, which is a utility model registered claim, characterized in that the lid body is protected by installing a heat insulating material in the lower part thereof.