WO2013089472A1

WO2013089472A1 - Heating device for a food cooker, and food cooker using same

Info

Publication number: WO2013089472A1
Application number: PCT/KR2012/010886
Authority: WO
Inventors: 박강수
Original assignee: Park Kang-Su
Priority date: 2011-12-14
Filing date: 2012-12-14
Publication date: 2013-06-20
Also published as: KR20130067521A

Abstract

The present invention relates to a heating device for a food cooker that uses steam, and to a food cooker using same. The heating device of the present invention comprises: a sealed water tank; a gas-water separating plate which, in the water tank, separates a water-accommodating space in which water is received from a steam-accommodating space in which steam is accommodated above the water-accommodating space, wherein a passage is disposed in the gas-water separating plate to connect the water-accommodating space to the steam accommodating space; and a heater immersed in the water in the water-accommodating space so as to heat the water in the water-accommodating space and fill the steam-accommodating space with the steam.

Description

Heating device for food cooker and food cooker using the same

The present invention relates to a heating device for a food cooker and a food cooker using the same, and more particularly, to a heating device for a food cooker using steam and a food cooking using the same.

In order to cook food, baking on a baking sheet is commonly used. In particular, in order to bake meat such as beef or pork on a baking sheet, it is necessary to heat the baking sheet. The method of heating the baking sheet directly on a gas burner or charcoal is commonly used.

However, when the grill is warmed on a gas burner or charcoal, the heating power is not easily controlled, and the grill is not evenly heated, and a well-baked portion and a hard-baked portion may occur even in one meat loaf. In addition, if a part of meat that is not grilled is grilled, a part that is already baked is often burned out.

In order to solve this problem, the inventor of the present application invents a steam cooker using superheated steam and has been registered with Patent No. 10-1081337, which utilizes the boiling point of water depending on the pressure.

Water boils at 100 ° C. at an absolute pressure of 1.03 kg / cm 2, but boils at 110 ° C. at an absolute pressure of 1.46 kg / cm 2. Further, when the absolute pressure is 3.68kg / cm 2, it boils at 140 ° C., and when the absolute pressure is 8.08kg / c cm 2, it boils at 170 ° C.

When water is heated in a closed container to generate steam, the generated steam cannot escape the closed container, and the pressure inside the container is gradually increased. As the pressure inside the vessel increases, the temperature at which the water boils exceeds 100 ° C and the temperature at which it breaks increases. It is well known that the boiling temperature and pressure of water have a constant proportionality. When steam generated by boiling water becomes high temperature and high pressure steam above 100 ° C., high temperature and high pressure steam is called superheated steam.

Patent No. 10-1081337 is invented and patented by the inventor of the present application. Patent No. 10-1081337 has a chamber to heat the roasting plate with superheated steam so that the heating device can heat up the superheated steam from the water tank to fill the surface of the cooking plate. Therefore, a steam cooker capable of cooking food using superheated steam disclosed in Patent No. 10-1081337 is limited in size of a cooking plate by the size of a chamber in which superheated steam is filled from a water tank.

When the superheated steam is filled in the chamber, high pressure steam is applied to the wall of the chamber, so the wall of the chamber must be designed to withstand the pressure of the high pressure steam. However, as the amount of superheated steam filled in the chamber increases, high pressure acts on the wall of the chamber, so that the wall of the chamber should be thicker. A chamber divided into a smaller space than a single space chamber can dissipate the pressure of the superheat steam so that the wall of the chamber can be thinned.

An object of the present invention is to provide a heating device for a food cooker capable of heating the cooking plate to a uniform temperature.

Another object of the present invention is to provide a heating device for a food cooker that can be heated uniformly below a temperature at which the entire cooking plate is not burned without being limited by the size of the cooking plate.

Another object of the present invention is to provide a heating device for a food cooker capable of manufacturing cooking plates of various sizes.

In addition, an object of the present invention is to provide a food cooker using a heating device for a food cooker that can be uniformly heated to below the temperature not burning the cooking plate.

The objects include a closed water tank of metal; A water separator separating the inside of the water tank into a water accommodating space in which water is accommodated and a steam accommodating space in which steam is accommodated above the water accommodating space, and a passage connecting the water accommodating space and the steam accommodating space; It is achieved by a heating apparatus for a food cooker comprising a heater that is submerged in the water filled in the water receiving space to heat the water in the water receiving space to fill the steam receiving space with steam.

The water tank made of metal may be used to close the front and the rear of the member having a space portion extending in a cross-section of the closed curve only so that the space is sealed. This structure makes it possible to manufacture various types of food cooking heaters without being limited in size.

The separator divides a metal water tank into a water receiving space for accommodating water and a steam accommodating space for accommodating steam above the water receiving space. The separation plate extends to the inner wall of the water tank, and a passage connecting the water receiving space and the steam receiving space is formed and is formed along the longitudinal direction of the water tank.

The water tank made of metal has a structure in which the cross section is composed of a smooth closed curve with no corners, for example, a circular or elliptical cross section, so as to disperse the hoop stress from the steam inside. It is desirable to have a structure that seals the space by blocking the front and rear of the body member. The space having a circular or elliptical cross section withstands the hoop stress of higher superheated steam with the same thickness compared to other cross-sectional structures.

When the metal water tank is structured to close the front and rear of the body member with a space part extending in a constant cross section to seal the space part, the separator plate separating the water receiving space and the steam containing space is integral with the body member. It extends from the front to the back. At this time, the material of the body member is preferably made of metal, preferably aluminum material, which is easily extruded into a circular or elliptical cross section. In addition, when the aluminum material is extruded into a circular or elliptical cross section to make a body member, it is possible to integrally form a water separator plate separating the water receiving space and the steam receiving space in the body member.

The water filled in the water tank is preferably filled downwards at regular intervals from the separator to prevent boiling water from entering the steam receiving space, which prevents the temperature of the surface of the cooking plate from lowering by the breaking water. Only to heat the cooking plate.

In the water tank, the separator plate is composed of a first brackish separation section extending from one side and a second brackish separation section extending from the other side to prevent steam from entering one side of the steam receiving space. It is preferable that the water separation section and the second water separation section be a passage between which the water receiving space and the steam receiving space communicate with each other.

In the water tank, the first brackish water separation section and the second brackish water separation section may extend at different heights so that water in the water receiving space does not easily enter the steam receiving space. In this case, an end of the first brackish separation section extends beyond the second brackish separation section so that a passage between the end of the first brackish separation section and the upper surface of the second brackish separation section communicates with the water receiving space and the steam receiving space. do. This is to prevent the water to be cut into the steam receiving space more difficult to prevent the temperature of the cooking plate is lowered by the water and to heat the cooking plate only with steam.

The top surface of the water tank may be flat so that the cooking plate may be installed directly on the heating device for food cooking, and the top surface of the water tank may be directly used as the cooking surface. For this purpose, it is preferable to make the upper surface of the body member in advance flat.

The food cooker having a heating device for cooking food includes: a cooking plate having a predetermined area for transferring heat to cook food; Located in the lower portion of the cooking plate, the body member having a space portion extending in an elliptical cross-section, located in the longitudinal direction in the space portion of the body member and divides the space portion into a water receiving space and a steam receiving space A radiator separating plate formed with a passage allowing the water receiving space and the steam receiving space to communicate with each other, and a front and rear cover member for blocking the space part of the body member to form a closed space to fill the water receiving space with water. A water tank consisting of; When the water receiving space is filled with water is located in the water of the water receiving space is heated to generate the steam by heating the water so that the steam containing space includes a heater to fill the steam.

The cooking plate may be installed on two or more food cooking heaters to increase the area of the cooking plate.

The cooking apparatus for a cooker according to the present invention can warm the entire cooking plate to a uniform temperature, and can make food cookers of various sizes without being limited by the size of the cooking plate.

1 is a perspective view of a heating device for a cooker according to the present invention.

2 is a partial exploded view of the first embodiment of the present invention.

3 is a cross-sectional view taken along the line III-III of FIG. 2.

4 is a partial exploded view of a second embodiment of the present invention.

5 is a cross-sectional view taken along the line V-V of FIG. 4.

FIG. 6 is a view of two cooking apparatuses for a cooker according to a second embodiment. FIG.

7 is a perspective view of a food cooker using a cooking apparatus heater according to the present invention.

8 is a partial exploded view of the food cooker of FIG. 7.

FIG. 9 is a partial exploded view of a cooking heater of the food cooker of FIG. 8.

10 is a cross-sectional view taken along the line X-X of FIG. 7.

11 is a cross-sectional view showing the form of the surface of the food cooker coated.

12 is a flowchart for explaining the operation of the cooking heater.

It is a flowchart for demonstrating the further operation | movement of the cooking apparatus heater.

1 shows a cooking apparatus for a cooker according to the present invention.

FIG. 2 is a partially exploded view of the first embodiment of the present invention, and FIG. 3 is a cross-sectional view taken along the line III-III of FIG. 2.

2 and 3, the water tank 110 made of metal has a space portion H extending in an elliptical cross section. The upper surface of the water tank 110 is flat and its area is wider by the

wings

117 and 119 extending to both sides. This is useful when using the upper surface of the water tank 110 directly as a cooking plate of the cooker. Although the water tank is shown in the figure in an elliptical cross section, the cross section may be a circular cross section of a closed curve with only a gentle curve, but of course, it will be described as an elliptical cross section for convenience.

The space H of the water tank 110 is divided into a water receiving space W and a steam receiving space S by the first and second brackish

water separation sections

113 and 115. In the cooking heater, the water receiving space W of the space H becomes a space filled with water. The steam accommodating space S becomes a space in which steam is filled.

In the space portion H of the water tank, the first rider separation section 113 extends from the right side wall at regular intervals toward the second rider separation section 115, and the second rider separation section 115 also includes a first separation section 115. 1 radix separation section 113 is extended to be spaced apart at regular intervals, the distance between the end of the first radix separation section 113 and the end of the second radix separation section 115 and the water receiving space (W) It becomes the passage (G) connecting the steam receiving space (S). Steam generated by heating the water filled in the water receiving space (W) of the space in the cooking heater enters the steam receiving space (S) of the space through the passage (G) to warm the upper surface of the water tank 110, steam Steam used to cover the upper surface of the water tank 110 in the receiving space (S) is returned to the water receiving space (W) through the passage. Here, the steam used to warm the upper surface of the water tank 110 may be water, or may be steam of a lower temperature than the steam in the water receiving space (W).

The space H of the water tank 110 becomes a closed space when blocking the front and rear of the body member 111 having the space therein. In addition, the space portion H is divided into a water receiving space W and a steam receiving space S by the first and second brackish

water separation sections

113 and 115.

The cover member 120 is made of a water tank 110 that can fill the water by closing the front and rear of the body member 111 having a space portion to make the space sealed. The cover member 120 is drilled with various holes to install a heater, a sensor, and the like in the water tank 110.

When the space H of the body member 111 is closed to form the water tank 110, the water is spaced slightly below the first and second

brackish separation sections

115 and 115. The water receiving space W is filled up to the set high water level. In the water receiving space (W) of the space portion of the water tank 110, the water is filled at some intervals below the first brackish separation section 113 and the second brackish water separation section 115. In order to prevent the water entering and entering the steam receiving space (S) easily through the steam storage space (S).

Under the water receiving space (W) of the space portion of the water tank 110,

heaters

131 and 133 for heating water to generate steam are positioned, and a low level detection sensor 141 for detecting a low level of water at a slightly higher position. ) Is located. The height of the low water level detection sensor is at least the height at which the

heaters

131 and 133 are submerged in water. When the water goes down to the height detected by the low water level detection sensor 141, the heater is exposed out of the water. When the heater is driven out of the water, the heater is overheated and a failure occurs. Thus, the low water level sensor 141 prevents the heater from being driven out of the water.

The high water level detection sensor 143 is located at a height corresponding to the high water level in the water receiving space W of the water tank 110. The high water level detection sensor 143 is not frequently generated, but when the user fills the water tank body with water, the high water level sensor 143 detects whether the water level is higher than the high water level so as not to be filled until the steam space S.

The pressure sensor 151 is located in the steam receiving space S of the water tank 110. The pressure sensor detects the pressure of steam in the steam receiving space (S). The temperature at which the water boils in the water tank 110 may be known as the pressure of steam detected by the pressure sensor 151.

4 is a partially exploded view of a second embodiment of the present invention, and FIG. 5 is a cross-sectional view taken along the line V-V of FIG. 4.

4 and 5, the water tank 210 made of metal has a space H extending in an elliptical cross section. The upper surface of the water tank 210 is flat and its area is wider by the

wings

217 and 219 extending to both sides.

The space H of the water tank 210 becomes a closed space when blocking the front and the rear of the body member 211 having the space therein. In addition, the space portion H is divided into a water receiving space W and a steam receiving space S by the first and second brackish

water separation sections

213 and 215. In the cooking heater, the water receiving space W of the space H becomes a space filled with water. The steam accommodating space S becomes a space in which steam is filled.

In the space portion H of the water tank 210, the first rider separation section 213 extends at a predetermined distance from the right side wall to the bottom of the second rider separation section 213, and the second rider separation section 215 extends further beyond the end of first radix section 213 at a slightly higher position than first radix section 213. Between the end of the second rider separation section 215 and the top surface of the first rider separation section 213 is a passage (G) connecting the water receiving space and the steam receiving space.

Steam generated by heating the water filled in the water receiving space (W) of the space in the cooking heater enters the steam receiving space (S) of the space through the passage (G) to warm the top surface of the water tank 210, steam Steam used to cover the upper surface of the water tank 210 in the receiving space (S) is returned to the water receiving space (W) through the passage. Here, the steam used to warm the upper surface of the water tank 210 may be water, or may be steam of a lower temperature than the steam in the water receiving space (W).

The cover member 220 is made of a water tank 210 that can fill the water by blocking the front and rear of the body member 211 to make the space of the body member 211 a closed space. At this time, the space portion of the body member 211 becomes the space portion H of the water tank 210. The cover member 220 has a plurality of holes drilled to install a heater, a sensor, and the like in the water tank 210.

The water is filled in the water receiving space (W) of the space (H) of the water tank 210 to the set high water level at a small interval below the first brackish water separation section (213). In the water receiving space W of the space H of the water tank 210, the water is filled at a small distance below the first brackish water separation section 213 so that steam is easily steamed through the passage G. The water entering and stopping the receiving space (S) is to prevent the entry into the steam receiving space (S).

The high water level detection sensor 243 is positioned at a height corresponding to the high water level in the water receiving space W of the water tank 210. The high level detection sensor 243 is not frequently generated, but when the user fills the water tank body with water, the high level detection sensor 243 detects whether the high level level is exceeded and informs the user so that the steam space S is not filled.

Under the water receiving space W of the space portion of the water tank 210,

heaters

231 and 233 for generating steam by heating water are located, and a low level detection sensor 241 for detecting a low level of water at a slightly higher position. ) Is located. The height of the low water level detection sensor is at least the height at which the

heaters

231 and 233 are submerged in water. When the water is lowered to the height sensed by the low water level sensor 241, the heater is exposed out of the water, the heater is broken when the heater is driven out of the water. Thus, the low water level sensor 141 prevents the heater from being driven out of the water.

The pressure sensor 251 is located in the steam receiving space S of the water tank 210. The pressure sensor detects the pressure of steam in the steam receiving space (S). The boiling temperature of water in the water tank 210 may be known as the pressure of steam detected by the pressure sensor 151.

In addition, a temperature sensor may be installed instead of the pressure sensor. This is because the temperature and pressure of boiling water have a constant proportionality.The temperature at which the water is cut is determined at a certain pressure, and the pressure is constant when the temperature at which the water is cut is constant. Because you can control.

A control operation of the cooker using superheated steam having the above structure will be described with reference to FIG. 12.

When the power switch is turned on to operate the cooker, the flow proceeds to step 503 to operate the low water

level detection sensors

141 and 241 for detecting the low water level indicating the water level in the water tank. The water detection signals of the low water

level detection sensors

141 and 241 are input to a microprocessor mounted on a circuit board. When the water detection signal is input from the low water level detection sensors 141 and 241 (step 505), the microprocessor determines that the

heaters

131, 133; 231 and 233 are submerged and proceeds to step 513.

However, if no water detection signal is input from the low water

level detection sensors

141 and 241, the microprocessor determines that the

heaters

131, 133; 231, 233 are exposed from the water (step 505), and the heater (step 505). 131, 133 and 231 and 233 are turned off, and the display device indicates that there is not enough water and waits until water is replenished.

When the water detection signal is input from the low water

level detection sensors

141 and 241 in step 505, the flow advances to step 513 to operate the high water

level detection sensors

143 and 243 informing the high water level of the water in the water tank. The water detection signals of the high water

level detection sensors

143 and 243 are input to a microprocessor mounted on the circuit board. When the water detection signal is input from the high

level detection sensors

143 and 243, the microprocessor determines that too much water is contained in the water tank (step 515), and the flow proceeds to step 517, where the

heaters

131, 133; 231, 233 Turn off the power supply and display too much water on the display.

If the water detection signal is not input from the high water

level detection sensors

143 and 243 in step 515, the flow proceeds to step 523 to measure the temperature in the water tank. In step 523 the temperature in the water tank is measured continuously as the device is driven.

The flow proceeds to step 525, and if the temperature in the water tank is equal to or higher than the set value, the flow proceeds to step 529 to turn off the heater. However, if the internal temperature is not greater than the set value in step 525, the process proceeds to step 527 to maintain the heater power ON, and the process returns to step 523 to repeat the process of measuring the internal temperature.

In step 529, the power of the heater is turned off, the flow advances to step 531 to determine whether the total power is turned off, and if the power is turned off, the flow advances to step 533 to end the operation. However, if the whole power supply is not OFF in step 531, the process returns to step 523 to repeat the internal temperature measurement.

In FIG. 12, the temperature is measured to control the temperature inside the water tank, but the temperature inside the water tank may be controlled by pressure. 13 is a flowchart for controlling the temperature inside the water tank by pressure.

When the power switch is turned on to operate the cooker, the flow proceeds to step 603 to operate the low water

level detection sensors

141 and 241 are input to a microprocessor mounted on a circuit board. When the water detection signal is input from the low water level detection sensors 141 and 241 (step 605), the microprocessor determines that the

heaters

131, 133; 231 and 233 are submerged in water and proceeds to step 613.

However, if the water detection signal is not input from the low water

level detection sensors

141 and 241, the microprocessor determines that the

heaters

131, 133; 231, 233 are exposed from the water (step 505), and the heater (step 607). 131, 133 and 231 and 233 are turned off, and the display device indicates that there is not enough water and waits until water is replenished.

When the water detection signal is input from the low water

level detection sensors

141 and 241 in step 605, the flow advances to step 513 to operate the high water

level detection sensors

143 and 243 are input to a microprocessor mounted on the circuit board. When the water detection signal is input from the high water

level detection sensors

143 and 243, the microprocessor determines that too much water is contained in the water tank (step 615), and the flow proceeds to step 617 to the

heaters

131, 133; 231, 233. Switch off the power supply, mark the display device too much water and drain the water.

If the water detection signal is not input from the high water

level detection sensors

143 and 243 in step 615, the flow advances to step 623 to measure the pressure in the water tank. In step 623 the pressure in the water tank is continuously measured as the device is driven.

If the pressure in the water tank is equal to or higher than the set value, the flow proceeds to step 629, where the power of the heater is turned off. However, if the internal pressure is not equal to or greater than the set value in step 625, the process proceeds to step 627 to maintain the heater power ON, and the process returns to step 623 to repeat the process of measuring the internal pressure.

In step 629, the power of the heater is turned OFF, and the flow proceeds to step 631, and it is determined whether or not the total power is turned off. However, if the entire power supply is not OFF in step 631, the process returns to step 623 to repeat the internal pressure measurement.

The cooking heater of the above configuration may be used in combination as shown in FIG. 6.

7 is a perspective view of a food cooker using the cooking apparatus for cooking according to the present invention, and FIG. 8 is a partial exploded view of the food cooker of FIG. 7.

Referring to FIGS. 7 and 8, the food cooker 300 is surrounded by a side plate 301 at the upper side of the cooking apparatus, and a power box 420 is installed at the front thereof. A power connection outlet is exposed on the side of the power box 420, and an electric circuit device and a control device are accommodated in the power box 420.

FIG. 9 is a partial exploded view of a cooking heater of the food cooker of FIG. 8. 10 is sectional drawing which cut | disconnected FIG. 7 by the cutting line X-X.

The food cooker 300 has two cooking devices. The two body members 211 constituting the two heating apparatuses 210 are blocked by one cover member 320 at the front and the rear thereof to fill the space of each body member 211 into a closed space to fill the water. It becomes the water tank 210 which can be put. In addition, the front and rear of the body member 211 is closed with a cover member 220, and then the fastening bolt 350 is fastened to make a space part of the body member 211 into a sealed space to fill the water tank 210 You can make

This structure is the same as that of the heater described above.

The food cooker may directly use the surface of the heating apparatus as a heating plate, as shown in FIG. 10, and if necessary, the upper surface of the heating plate may be coated with a material such as Teflon to which food is not pressed (301).

It is possible to provide an apparatus capable of heating the entire cooking plate to a uniform temperature at which food is not burned by using the cooking apparatus for the cooker having the above configuration.

Claims

A closed water tank;

Located in the water tank, the water tank is divided into a water receiving space in which water is accommodated and a steam receiving space in which steam is accommodated above the water receiving space, and a passage connecting the water receiving space and the steam receiving space. Radical separator is formed;

And a heater which is immersed in water filled in the water receiving space to heat the water in the water receiving space to fill the steam receiving space with steam.
A water tank, the inside of which extends long in a closed cross-section and whose front and rear sides are blocked to close the inside thereof;

Located in the water tank, formed in the longitudinal direction of the water tank is separated into a water containing space in which the water is accommodated and a steam containing space in which steam is accommodated above the water receiving space, the water containing space A radiator separator formed with a passage connecting the steam accommodating space;

And a heater which is immersed in water filled in the water receiving space to heat the water in the water receiving space to fill the steam receiving space with steam.
The method according to claim 2,

Cross section of the water tank is an elliptical or circular heating device for a food cooker.
The method according to claim 3,

And the radiator separator is extended from the inner wall of the water tank to be integral with the water tank.
The method according to claim 4,

The brackish separator consists of a first brackish separation section extending from one side of the inner wall of the water tank and a second brackish separation section extending from the other side of the water tank, wherein the first brackish separation section and the second brackish separation are provided. Heating device for a food cooker between the sections is a passage connecting the water receiving space and the steam receiving space.
The method according to claim 5,

The first rider separation section and the second rider separation section extend to have different heights, and an end of the first rider separation section extends beyond the second rider separation section so that Heating device for a food cooker is a passage connecting the water receiving space and the steam receiving space between the upper surface of the second brackish water separation section.
The method according to claim 6,

Heating device for a food cooker is the top surface of the water tank.
The method according to claim 7,

In the steam receiving space inside the water tank is a heating device for a food cooker is provided with a pressure sensor for detecting the pressure of the steam.
The method according to claim 8,

And a low water level detection sensor is installed in the water tank to detect a low water level so that the heater is submerged in water filled in the water receiving space.
The method according to claim 9,

And a high water level detecting sensor installed in the water tank to detect a high water level so that the water filled in the water receiving space does not block a passage connecting the water receiving space and the steam receiving space.
A closed water tank;

A water separator separating the inside of the water tank into a water accommodating space in which water is accommodated and a steam accommodating space in which steam is accommodated above the water accommodating space, and a passage connecting the water accommodating space and the steam accommodating space;

A heater submerged in the water filled in the water receiving space to heat the water in the water receiving space to fill the steam receiving space with steam;

A food cooker comprising a cooking plate installed on the water tank.
A cooking plate having a predetermined area for transferring heat to cook food;

Located in the lower portion of the cooking plate, the body member having a long spaced section extending in the cross section consisting of only a closed closed curve, located in the longitudinal direction in the space portion of the body member and the space portion to the water receiving space and steam receiving space A split separator plate having a passage through which the water receiving space and the steam receiving space communicate with each other, and a front and rear cover to fill the water receiving space with water by making the space part of the body member a closed space. A water tank made of a member;

And a heater which is positioned in the water of the water receiving space to generate steam by heating the water when water is filled in the water receiving space so that the steam receiving space is filled with steam.
The method according to claim 12,

Cross section consisting of only the closed curve is a food cooker of the oval shape.
The method according to claim 13,

Cross section consisting of only the closed curve is a food cooker of a circular shape.
The method according to claim 14,

The radix separator comprises a first radix separation section extending from one side of the body member and a second radix separation section extending from the other side of the body member, wherein the first radix separation section and the second radix separation section. And a food cooker between the water receiving space and the steam receiving space.
The method according to claim 15,

The first rider separation section and the second rider separation section each have a different height and extend from the body member, and an end of the first rider separation section extends beyond the second rider separation section to separate the first rider separation. And an end portion of the section and an upper surface of the second brackish water separation section, the passage connecting the water receiving space and the steam receiving space.
The method according to claim 16,

A food cooker having a flat top surface of the water tank.
The method according to claim 17,

A food cooker wherein a top surface of the flat water tank is a bottom surface of the cooking plate.
The method according to claim 18,

Heating device for a food cooker is installed in the steam receiving space of the water tank to detect the pressure of the steam.
The method according to claim 19,

And a low water level detection sensor is installed in the water tank to detect a low water level so that the heater is submerged in water filled in the water receiving space.
The method of claim 20,

And a high water level detecting sensor installed in the water tank to detect a high water level so that the water filled in the water receiving space does not block a passage connecting the water receiving space and the steam receiving space.