JP3275618B2 - pot - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pot for heating and cooling a liquid such as water.

[0002]

2. Description of the Related Art In some cases, boiling water, such as green tea or gyokuro, is used after being cooled to a predetermined temperature. Therefore, a pot that can boil water and cool the boiling water to a desired temperature is desired. It is rare.

Conventionally, this type of pot has a configuration shown in FIG. 5, and the configuration will be described below. That is, a container 103 for storing water 102 is provided in the main body 101. The heater 104 is attached to the bottom of the container 2 and the container 1
This is a configuration for heating the water in 03. Further, a suction pump side is provided with an outlet pump 105 communicating with the inside of the bottom of the container 103,
The water 103 in the container 102 is led out to the water outlet 106 by the outlet pump 105, and the distal end of the water outlet 106 is connected to the main body 1.
01 and the container 1
The water in 03 is led out from the outlet 107. Discharge pump 1
The operation knob 108 provided on the upper surface of the main body 101 is operated to operate the operation unit 05.

Further, a circulation pump 109 having a suction port communicating with the inside of the bottom of the container 103 is provided, and a circulation path 110 communicating with an upper portion of the container 103 is provided at a discharge port of the circulation pump 109.
Is connected so that the water in the container 103 passes through the heat exchanger 111 arranged in the middle of the circulation path 110. The heat exchanger 111 is configured to be cooled by cooling air from a cooling fan 112. Further, the container 1 of the circulation path 110
A water purification unit 113 containing a water purification agent such as activated carbon is attached to the outlet on the 03 side. A temperature sensor 1 for detecting the temperature of water in the container 103 is provided at the bottom of the container 103.
14 are provided.

In the above-described pot, when tap water is put into the container 102 and heated, the heater 104 is energized to heat the water in the container 103 from the bottom. Heater 1
When the temperature sensor 114 detects that the water in the container 103 reaches the boiling temperature by the use of 04, the boiling state is maintained for several minutes to remove unnecessary components (kalky, musty odor, trihalomethane, etc.) contained in the tap water to some extent. . Thereafter, the power supply to the heater 104 is stopped, and the circulation pump 109 and the cooling fan 112 are operated to remove heat from the water circulating in the heat exchanger 111 to forcibly cool the temperature of the water 102 in the container 103. During this cooling operation, the container 1
The water 102 in 03 circulates and further removes unnecessary components of water circulating in the water purification section 113 attached to the outlet of the circulation path 110 (such as lime, musty odor, and trihalomethane).
When the temperature sensor 114 detects that the water in the container 103 has dropped to a predetermined temperature, the operation of the circulation pump 109 and the cooling fan 112 is stopped.

[0006]

However, in the conventional pot, the water 102 in the container 103 is heated by the heater 104 attached to the bottom of the container 103.
In the case where a heat insulating material is provided on the outer wall of the container 103 to prevent heat radiation from the inside of the container 103, the heat insulating material must have high heat resistance that can withstand the heat of the heater 104. In addition, the cooling operation is performed after the heating operation. However, if the container 103 is covered with a heat insulating material, the heat from the heater 104 is difficult to escape, and the cooling effect is reduced.

SUMMARY OF THE INVENTION In view of the above problems, an object of the present invention is to provide a structure for applying a heat insulating material to a container, and to increase the heating and cooling efficiency.

[0008]

A first object of the present invention for achieving the above object is to provide a container for storing a liquid such as water, a lid for opening and closing the upper part of the container, and
Heating means for heating the liquid in the container, a water purification section for purifying the liquid in the container, cooling means for cooling the liquid in the container, and supplying the liquid in the container to the heating means or cooling means. Circulating means for returning heated or cooled liquid into the container, wherein the circulating means circulates the liquid between the heating means and the container, and circulates the liquid between the cooling means and the container. And a circulating pump for supplying the liquid in the container to each path, and the heating means includes a liquid in the container.
A heating vessel placed in the middle of the body circulation
A heater for heating the vessel, and
Copper brazing to the outer wall of the container
Are formed by brazing a plurality of parts with nickel brazing .

A second problem solving means, the pressurizing heat means, a heating vessel arranged in the middle of the path for circulating the liquid in the container, consist of a heater for heating the heating vessel, the upper part of the heating vessel A plate is provided for suppressing the ripples on the water surface of the boiling liquid.

A third problem solving means, the pressurizing heat means, a heating vessel arranged in the middle of the path for circulating the liquid in the container, consist of a heater for heating the heating vessel, in the heating vessel the heating vessel It is provided with a vapor outlet for discharging the vapor and a liquid outlet for discharging the heated liquid in the heating vessel.

According to a fourth aspect of the present invention, there is provided the above-described third aspect of the invention, further comprising a steam pipe connecting the steam outlet of the heating vessel and the inside of the vessel.

[0012] The fifth means for solving problems is provided with a liquid outlet for liquid from the heating vessel in the third means for solving problems to flow out into the container, a vapor outlet for flowing the steam pipe in the container The liquid outlet is disposed above the vapor outlet.

[0013]

According to the first means for solving the above problems, when heating the liquid in the container, the circulation pump and the heating means are operated to guide the liquid in the container to the heating means outside the container, and the heating means is used. Heat the liquid back into the container. With this configuration, the container can be covered with a heat-insulating material having low heat resistance without providing a heating means on the outer wall of the container. When cooling the liquid in the container, the circulation pump and the cooling unit are operated to guide the liquid in the container to the cooling unit, and the liquid is cooled by the cooling unit and returned into the container. In addition, the heating vessel
The heater is fixed to the outer wall with copper brazing.
Heat can be efficiently transferred to the outer wall of the heating vessel.
Wear. In addition, each part constituting the heating vessel is made of nickel brazing.
To increase corrosion resistance and remove rust
It is prevented from dissolving in the liquid inside the vessel.

According to the second means for solving the problems, when the liquid in the heating vessel starts to boil, the water surface of the liquid in the heating vessel is depressed. Can be prevented from scattering.

According to the third means for solving the problems, when the liquid in the heating vessel starts boiling, the boiling liquid and the vapor are mixed in the heating vessel. The liquid and the vapor are separated, and the liquid is taken out from the liquid outlet and the vapor is taken out from the vapor outlet.

According to the fourth means for solving the problems, the steam generated in the heating vessel is led out into the vessel through the steam pipe. Therefore, the steam does not flow out of the main body directly,
Acts to heat the container, increasing heating efficiency.

According to the fifth means for solving the problems, the liquid and vapor boiled in the heating vessel flow into the vessel from the respective outlets. Since the vapor is discharged from below where the liquid flows, the vapor is prevented from flowing upward to some extent by the liquid, and the vapor can be more effectively applied to the heating of the container.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An overall configuration of a pot showing an embodiment of the present invention will be described below with reference to FIG. In the figure, reference numeral 1 denotes a main body, in which a container 2 having an open upper surface is housed. The upper opening of the container 2 is openably and closably covered with a lid 3. At the bottom of the container 2, an electric pump (hereinafter referred to as a discharge pump) 4 for discharging the liquid (generally tap water) in the container 2 to the outside of the container is disposed. Driven by the first motor 5.

The suction port 6 of the discharge pump 4 communicates with the bottom of the container 2, and its discharge port 7 communicates with a discharge port 9 provided on the upper front surface of the main body 1 via a discharge path 8. ing. A switch 10 for controlling the operation of the first motor 5 is provided above the outlet 9, and the switch 10 is provided with an external operation knob 1 protruding from the upper surface on the front side of the main body 1.
It is linked with 1. By turning the external operation knob 11, the switch 10 is operated to control the number of rotations of the first pump to adjust the amount of liquid drawn out from the outlet pump 4 to the outlet 9; A deriving operation unit 12 configured to control the amount of liquid to be discharged from the inside of the container 2 by the external operation knob 11 or the like.

The upper part of the outlet path 8 branches into an outlet pipe 13 communicating with the outlet 9 side and a return pipe 14 communicating with the upper side inside the container 2. And the liquid from the outlet path 8 to the outlet 9
It is configured to selectively switch between the side and the inside of the container 2 to flow.

An electric pump (hereinafter referred to as a circulation pump) 16 for circulating the liquid in the container 2 is disposed at the bottom of the container 2, and the circulation pump 16 is driven by a second motor 17. The suction port 18 of the circulation pump 16 communicates with the bottom of the container 2 and the discharge port 19 thereof is connected to the first water channel 2.
0 and communicates with the circulation side switching valve 21.

The circulation-side switching valve 21 branches into a second water passage (a circulation passage on the heating side) 22 and a third water passage (a circulation passage on the cooling side) 23. , And is poured into a water purification section 24 attached to an upper portion in the container 2.

An electric heater 26 is wound around the outer wall of the heating vessel 25 arranged in the middle of the second water passage 22 to heat the liquid passing through the heating vessel 25. The heater 26 and the heating vessel 25 serve to heat the liquid 2.
7 (hereinafter referred to as boiler). A vapor outlet 38 and a liquid outlet 39 for separating vapor and liquid from the heating vessel 25 and flowing out are provided. The liquid outlet 39 has a second water passage 22 which is a circulation path on the heating side.
The steam outlet 38 is connected to a steam pipe 40, and the outlet of the steam pipe 40 faces the inside of the container 2.

A cooling means for cooling the liquid is provided in the middle of the third water passage 23, and this cooling means is specifically constituted by a heat exchanger 28. The heat exchanger 28 is a water container 2
9, a thermoelectric element 30 by the Peltier effect, a heat dissipating member 31, and the like.
The heat radiation side is attached to the heat radiation member 31 by pressing. The heat dissipating member 26 attached to the thermoelectric element 30 is cooled by a blower 32 disposed below the heat dissipating member 26. And exhausts the air out of the main body 1 again.

The water purification section 24 provided in the container 2 contains a water purification agent 33 such as activated carbon, and a mineral additive containing calcium carbonate and magnesium carbonate as main components. The water purification agent 33 is located below the outlet of the second water channel 22, and the cooled liquid flows out of the outlet of the third water channel 23. As shown in FIG.
The outlet 52 of the water channel 23 is horizontally arranged in parallel with the outlet 51 of the second water channel 22, and the outlet 50 of the steam pipe 40 is disposed below the outlet 51 of the second water channel 22. A mineral additive is located in the water purification section 24 below the outlet of the third water channel 23. The heated liquid is purified by the purifying agent 33, and the cooled liquid whose temperature has decreased is a mineral additive. And the mineral dissolves in the liquid that has passed. In particular, when the liquid temperature is high, it is difficult for the mineral to flow into the liquid. Therefore, the mineral is disposed at the outlet from which the cooled liquid flows, so that the mineral can be efficiently dissolved into the liquid.

Heating is performed by circulating the liquid in the container 2 through the second water passage 22, cooling is performed by circulating the liquid in the third water passage 23, and heating or cooling the liquid in the container 2 is performed. However, a temperature sensor 35 for detecting the temperature of the liquid in the container 2 is attached to the outer bottom surface of the container 2 so that the liquid in the container 2 can be heated or cooled to a predetermined temperature by heating or cooling. A container-side heat insulating material 34 made of hard urethane is attached to the outer wall of the container 2 to prevent dew condensation on the outer wall of the container 2.

A pump-side heat insulating material 36 made of hard urethane foam is attached so as to cover the lead-out pump 4 and the circulation pump 16 disposed on the bottom side of the container 2, so that dew condensation occurs on the outer walls of the pumps 4 and 16. Has been prevented. The inside of the lid 3 is also filled with a lid-side heat insulating material 37 made of rigid urethane foam to prevent dew condensation on the outer wall of the lid 3. Further, the heat insulating materials 34, 36, and 37 can prevent the occurrence of dew condensation during cooling as described above, but suppress the heat radiation from the container 2, the lid 3, and the circulation pump 16 during heating, and increase the heating efficiency. .

Next, the operation of the above-described pot will be briefly described. First, when the liquid in the container 2 is once boiled to remove the calcium component contained in the liquid, the circulation side switching valve 21 is switched to the second water passage 22 side, the circulation pump 16 is operated, and the heater 26 is turned on. And the liquid in the container 2 is heated by the boiler 25 while the second
2. Circulate in the container 2. That is, the liquid in the container 2 is sucked from the suction port 18 of the circulation pump 16 and
9 and is returned into the container 2 through the first water passage 20 and the second water passage 22. At this time, the liquid is
Is heated by the heater 20 when passing through, and by continuing this operation, the temperature of the liquid in the container 2 rises and reaches the boiling point. At this time, since the liquid passes through the water purification agent 33, removal of the chlorine component such as chlorine is promoted.

In order to cool the boiling liquid to the heat retaining temperature, the circulation side switching valve 21 is switched to the third water passage 23 side, the circulation pump 16 is operated, and the thermoelectric element 25 is cooled.
And the blower 27 is operated. That is, the thermoelectric element 2
5, the temperature of the heat absorbing side pressed against the water passage container 24 decreases due to the Peltier effect, so that the liquid passing through the water passage container 24 is deprived of heat, and the heat radiating member 2 pressed against the heat radiating side.
6 and the heat is forcibly exhausted to the outside of the main body 1 by the blowing of the blower 27. By continuing this operation, the third waterway 23
The liquid passing through the heat exchanger 28 disposed in the middle of the process is cooled and refluxed into the container 2, whereby the liquid is quickly cooled to the set temperature. The cooling operation is performed by a cooling temperature (for example, a cooling temperature set by a temperature detected by the temperature sensor 30).
Continue until the temperature reaches 10 ° C. and 16 ° C.).

In order to keep the boiling water at a high temperature, for example, around 95 ° C., the same operation as that of the boiling operation is performed until the temperature reaches a predetermined keeping temperature in accordance with a decrease in the temperature of the liquid in the container 2. Well, the cooled liquid can be cooled to a low temperature, e.g.
In order to keep the temperature at about 0 ° C., the same operation as that in the cooling operation may be performed until the temperature reaches a predetermined temperature according to the rise in the temperature of the liquid in the container 2.

Further, the operation on the derivation side will be briefly described.
When heating the liquid in the container 2, the outlet side switching valve 15
Is switched to the reflux pipe 14 side, and the discharge pump 4 is operated in a state where the path between the bottom part and the upper part of the container 2 is communicated, that is, in a state where the circulation path is formed, the liquid in the discharge path 8 Can be circulated and replaced, and unnecessary components in the liquid that are not heated in the outlet path 8 can also be removed.

When the liquid in the container 2 is drawn out from the outlet 9 by the external operation knob 11, the discharge side switching valve 15 is switched to the reflux pipe side in the same manner as described above before the liquid is drawn out.
When the discharge pump 4 is operated, the liquid in the discharge path 8 is circulated and replaced, and the temperature of the liquid in the discharge path 8 is changed to the container 2.
Temperature is almost equal to the inside temperature. After this circulation operation is completed, the outlet switching valve 15 is switched to the outlet pipe 13 side, and the liquid is discharged from the outlet 9. By operating the above-mentioned outlet side switching valve 15, even when a small amount of liquid is drawn out, that is, even when the liquid in the outlet path 8 is drawn out, the liquid or atmosphere temperature kept at a high temperature is maintained. The liquid kept at a low temperature of (outside air temperature) or lower is not discharged.

In addition, if the temperature is kept low at a low temperature for a long period of time, there is a possibility that germs may propagate in the lead-out route 8. By circulating the high-temperature liquid, the circulation path 8 and the inside of the reflux pipe 14 can be sterilized, which is sanitary.

Since the boiler 22 is located at a position higher than the highest water level in the container 2, for example, a full position (water level A in the figure), the liquid is cooled and kept cool to a temperature lower than the ambient temperature. Even when the boiler 22 is operated, the temperature in the boiler 22 is not reduced because the liquid in the container 2 does not flow into the boiler 22 and the boiler 22 is not exposed to cold water.
It is possible to simplify the installation of a heat insulating material for preventing dew condensation. Furthermore, since the boiler 22 is located above the heat exchanger 28, the cooling effect of the heat exchanger 28 during operation can be reduced.

Next, the detailed configuration of the boiler will be described with reference to FIGS. As shown in the figure, the heater 26 is wound around and attached to the body 44 of the heating vessel 25.
Moreover, the heater 26 is brazed to the body 44 of the heating vessel 25. In brazing, copper brazing is used.
The part is the brazing part. The reason why the copper brazing is used is to increase the heat transfer coefficient transmitted from the heater 26 to the body 44 of the heating vessel 25 and efficiently heat the body 44.

The upper portion of the heating vessel 25 is formed to protrude horizontally from the body 44, that is, to have an L-shaped cross section. The upper portion of the body portion 44 is formed of a case made of a separate component, and is brazed with nickel brazing to attach and fix the body portion 44 and the case (part F in the figure).
The case forms an upper space 41 of the heating container 25, and the upper part is closed by a lid cap 42. That is, the lid cap 42 and the case are brazed by nickel brazing (part G in the figure). In this way, the components that make up the heating vessel are brazed with nickel braze to increase corrosion resistance,
Rust and the like are prevented from being dissolved in the liquid in the heating container 25. Each component of the heating container 25 is made of stainless steel.

In the upper space 41, a lid cap 42 is provided.
Is formed on the uppermost surface of the plate 43 so that a gap is formed between
5 are formed. This plate 43 is, as shown in FIG.
It is made sufficiently larger than the inner diameter of the body 44 to prevent the liquid heated and boiled by the body of the heating vessel 25 from splashing upward or the water surface of the liquid from waving due to boiling. Further, in order to form a bubble reservoir 53 slightly larger than the body of the heating container 25, a part of the plate 43 is projected upward.

The plate body 43 is bent downward at its periphery, the bent lower end thereof is brought into contact with the inner bottom surface of the upper space 41, and the projection 45 provided on the uppermost surface is brought into contact with the back surface of the lid cap 42. 43 is fixed, and is prevented from being moved by the force of the liquid and vapor rising from the body 44 of the heating container 25. A bottom portion is formed at the bottom of the upper space 41 of the heating vessel 25, and a liquid outlet 46 is provided at the bottom. Further, the steam extraction pipe 47 is projected from the bottom into the upper space 41 to a position slightly lower than the uppermost surface of the plate 23, and a steam outlet 4 is provided above the steam extraction pipe 47.
8 is opened.

The operation of the boiler having the above configuration will be described.
During the heating operation, the liquid in the container 2 is sent from the liquid inlet 49 into the heating container 25 by the circulation pump 16 (arrow C). The liquid sent into the heating container 25 is heated by the heater 26 of the body 44. When the liquid is heated to a boiling state, bubbles are generated on the inner surface of the body of the heating vessel 25,
These bubbles rise toward the upper space 41 side. The air bubbles are accumulated in the air bubble accumulating portion 53 as vapor,
It flows into the steam outlet 48 of the steam take-out pipe 47 through the gap between the steam outlet pipe 47 and the cover cap 42 (arrow E).

On the other hand, the liquid also moves to the upper space, and the scattering of the liquid and the ripples on the upper surface are suppressed by the plate 43, and the liquid and the vapor are separated smoothly. That is,
The liquid that has proceeded to the upper space 41 is turned in the horizontal direction from above by the plate 43, and is returned into the container 2 from the liquid outlet 46 as shown by the arrow D. In particular, the plate 43
Suppresses the water surface of the liquid from waving, so that the liquid surface can be prevented from flowing over the vapor outlet 48 of the vapor extraction pipe 47 due to the waving, and the liquid and the vapor can be separated. It can be done reliably. Therefore, the liquid and the vapor are not spouted into the container 2 in a mixed form, so that the liquid can be prevented from being scattered in the container 2.
Flowing into the water channel 23 can be prevented.

The liquid and vapor separated by the boiler flow out of the outlets 50 and 51 into the container 2. The liquid that has flowed out of the outlet 51 can prevent the steam flowing from below the outlet 51 from jumping upwards, and the steam can directly flow into the lid 3.
, And does not blow out from the vapor outflow path 54 provided in the lid. Further, the residence time of the vapor in the container 2 can be prolonged to contribute to the heating of the container 2. In addition, even if the liquid outlet 46 is clogged with foreign matter for some reason, the liquid and the vapor can be returned to the container 2 through the vapor outflow pipe 47.

When the heating operation is completed, the operations of the circulation pump 16 and the heater 26 are stopped, but the liquid accumulated in the upper space 41 of the heating vessel 25 naturally flows to the bottom, and
The liquid in the upper space 41 can be smoothly returned from the liquid outlet 46 into the container 2.

[0043]

As is clear from the above description, according to the first means for solving the problems of the present invention, the heat is applied to the outer wall of the heating vessel.
Since the heater is brazed and fixed with copper brazing, the heat of the heater is
It can be efficiently transmitted to the outer wall of the heating container. Ma
The components that make up the heating vessel are brazed with nickel brazing.
This improves corrosion resistance and removes rust from the liquid in the heating vessel.
Prevents melting into the body.

According to the second object of the present invention, when the liquid in the heating vessel starts to boil, the liquid surface of the liquid in the heating vessel is depressed, but the wave of the liquid surface is suppressed by the plate. Thus, splashing of the liquid can be prevented. Therefore, the boiling sound in the heating vessel can be reduced, and the liquid and the vapor can be easily separated.

According to the third means for solving the problem of the present invention, when the liquid in the heating vessel starts to boil, the boiling vessel and the vapor are mixed in the heating vessel. Liquid can be withdrawn from the liquid outlet and vapor can be withdrawn from the vapor outlet. Therefore,
Liquids and vapors do not squirt into the container in a mixed form, preventing the liquid from splashing inside the container and preventing the splashed liquid from flowing into the cooling means through the outlet of the cooling-side circulation path. it can.

According to the fourth means for solving the problems of the present invention, since the steam generated in the heating vessel is led out into the vessel through the steam pipe, the steam does not flow out of the main body directly, Acts to heat, and the heating efficiency can be increased.

According to the fifth means for solving the problems of the present invention, the liquid and the vapor boiled in the heating vessel flow into the vessel from the respective outlets, but the vapor is discharged from below where the liquid flows. Thus, it is possible to suppress the upward movement to some extent, and to make the steam more effectively act on the heating of the inside of the container.

[Brief description of the drawings]

FIG. 1 is a sectional view of a pot showing one embodiment of the present invention.

FIG. 2 is a layout view of each outlet as viewed from the inner surface of the container of the pot.

FIG. 3 is a sectional view of the boiler.

FIG. 4 is a plan view of the boiler with a lid cap removed.

FIG. 5 is a sectional view of a conventional pot.

[Explanation of symbols]

 Reference Signs List 2 container 3 lid 4 lead-out pump 16 circulation pump 22 second water path (heating-side circulation path) 23 third water path (cooling-side circulation path) 24 water purification unit 25 heating container 26 heater 27 boiler (heating means) 28 Heat exchanger (cooling means) 43 Plate 46 Liquid outlet 48 Steam outlet 50 Outlet (steam outlet) 51 Outlet (liquid outlet)

────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Katsuyuki Aihara 1006 Kazuma Kadoma, Kazuma, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (56) References JP-A-6-38877 (JP, A) JP-A-6-38877 70850 (JP, A) (58) Field surveyed (Int. Cl. ⁷ , DB name) A47J 27/21 101

Claims (5)

(57) [Claims] 1. A container for storing a liquid such as water, a lid for opening and closing the upper part of the container, a heating means for heating the liquid in the container, and a water purification unit for purifying the liquid in the container. A cooling unit that cools the liquid in the container; and a circulating unit that supplies the liquid in the container to the heating unit or the cooling unit, and returns the heated or cooled liquid to the inside of the container. A path for circulating the liquid between the heating means and the container, a path for circulating the liquid between the cooling means and the container, and a circulation pump for supplying the liquid in the container to each path, wherein the heating means is a container And a heater for heating the heating container, brazing the heater to the outer wall of the heating container with copper brazing, and connecting the heating container to a plurality of parts with nickel. Brazing Pot composed with. 2. A container for storing a liquid such as water, a lid for opening and closing the upper part of the container, a heating means for heating the liquid in the container, and a water purification unit for purifying the liquid in the container. A cooling unit that cools the liquid in the container; and a circulating unit that supplies the liquid in the container to the heating unit or the cooling unit, and returns the heated or cooled liquid to the inside of the container. A path for circulating the liquid between the heating means and the container, a path for circulating the liquid between the cooling means and the container, and a circulation pump for supplying the liquid in the container to each path, wherein the heating means is a container A heating vessel arranged in the middle of a path for circulating the liquid, and a heater for heating the heating vessel, and a plate body for suppressing the waving of the water surface of the boiling liquid is provided at an upper portion in the heating vessel. pot. 3. A container for storing a liquid such as water, a lid for opening and closing the upper part of the container, a heating means for heating the liquid in the container, and a water purification unit for purifying the liquid in the container. A cooling unit that cools the liquid in the container; and a circulating unit that supplies the liquid in the container to the heating unit or the cooling unit, and returns the heated or cooled liquid to the inside of the container. A path for circulating the liquid between the heating means and the container, a path for circulating the liquid between the cooling means and the container, and a circulation pump for supplying the liquid in the container to each path, wherein the heating means is a container A heating vessel arranged in the middle of a path for circulating the liquid, and a heater for heating the heating vessel.The heating vessel has a vapor outlet for flowing out the vapor in the heating vessel and a heated liquid in the heating vessel. Set up an outflow liquid outlet Kettle pot. 4. The pot according to claim 3, further comprising a steam pipe connecting a steam outlet of the heating vessel and the inside of the vessel. 5. A liquid outlet from which a liquid from a heating container flows out into the container, and a vapor outlet for allowing a vapor pipe to flow into the container, wherein the liquid outlet is disposed above the vapor outlet. 3. The pot according to 3 .