KR20090112618A - A cooker - Google Patents

Abstract

PURPOSE: A cooker is provided to increase the operating dependability and to use more safely. CONSTITUTION: A burner assembly(200) burns mixing gas in order to deliver the heat through a heat transfer medium to a heat object. A nozzle assembly(300) emits the gas to form the mixing gas. An intake flow path makes air move to make the mixing gas. The intake flow path and the exhaust channel are overlapped with top and bottom.

Description

Cooker {A cooker}

The present invention relates to a cooking appliance, and more particularly, to a cooking appliance for heating food by transferring the heat generated in the combustion process of the gas through a heat transfer medium.

Cooking appliances are home appliances that heat food using gas or electricity. In general, a plurality of burners are provided on an upper surface of a cooking apparatus using gas, and the food is directly heated by heating a container in which food is contained by a flame generated in the process of burning gas in the burner.

However, the following problems occur in the cooking apparatus according to the prior art.

First, in a conventional cooking appliance, a flame for cooking food is exposed to the outside. Therefore, the user may be burned by the flame during the use of the cooking appliance.

Meanwhile, in the process of cooking the food may overflow to the outside of the container containing the food. However, in the conventional cooking apparatus, since the flame is exposed to the outside, the flame is extinguished by the overflowing food water, so that cooking of the food may be stopped or gas may leak to the outside.

In addition, in a conventional cooking appliance, such as a burner or a trivet for cooking food, it is exposed to the outside of the upper surface. Therefore, if the upper surface of the cooking apparatus is contaminated by food in the process of cooking food, it is not easy to clean it.

The present invention is to solve the conventional problems as described above, the object of the present invention is to provide a cooking apparatus configured to be used more safely.

Another object of the present invention is to provide a cooking apparatus configured to be able to improve operation reliability.

Still another object of the present invention is to provide a cooking apparatus configured to be more simple to use.

According to an embodiment of the present invention for achieving the above object, the present invention, a burner assembly in which the mixed gas is burned to transfer heat to the heating material through the heat transfer medium; A nozzle assembly into which a gas forming the mixed gas is injected; An intake air passage through which air forming the mixed gas flows; And an exhaust passage through which the combustion gas generated by the combustion of the mixed gas flows. It includes, and the intake passage and the exhaust passage overlaps up and down, the air flowing through the intake passage and the combustion gas flowing through the exhaust passage flows in directions opposite to each other by convection caused by a temperature difference.

According to another embodiment of the present invention, the present invention, the intake hole is provided on one surface, the air is sucked for the combustion of the gas in the burner assembly; And an exhaust hole disposed on the one surface adjacent to the suction hole and spaced apart from the intake hole in the front and rear directions, and the combustion gas discharged from the combustion of the gas in the burner assembly. It includes, the intake of air through the intake and exhaust holes and the discharge of the combustion gas is made by convection by the temperature difference between the air and the combustion gas, through the air and the exhaust air sucked through the intake hole Exhaust combustion gases flow in opposite directions.

According to another embodiment of the present invention, the present invention is provided on one surface, the air intake air suction; An exhaust hole provided at a position where the intake hole is not intersected with the intake hole from side to side and in which air is discharged; An intake flow passage through which air sucked through the intake hole flows in a horizontal direction; And an exhaust passage through which air discharged through the exhaust hole flows in a horizontal direction opposite to the flow direction of air flowing through the intake passage; It includes.

According to the cooking apparatus according to the present invention, there is an advantage that the product can be used more safely and operation reliability is improved, and it can be used more simply.

Hereinafter, with reference to the accompanying drawings an embodiment of a cooking appliance according to the present invention will be described in detail.

1 is a perspective view showing an embodiment of a cooking appliance according to the present invention, Figure 2 is an exploded perspective view showing an embodiment of the present invention.

Referring to this, the cabinet 100 forms the appearance of the cooking appliance 10. The cabinet 100 is formed in a polyhedron shape such as a hexahedron having an upper surface opened. In addition, a plurality of cooling holes 110 are formed at the bottom surface of the cabinet 100. The cooling hole 110 is a place where air is input and output for cooling the components provided in the cabinet 100. Therefore, a cooling passage Pc (see FIG. 14) through which the air entering and exiting through the cooling hole 110 flows is provided in the cabinet 100.

In the present embodiment, the cooking appliance 10 is a built-in type installed in the cabinet 1. In detail, the cabinet 100 is installed above the installation space 3 of the cabinet 1 provided in the kitchen. In addition, the front of the furniture cabinet 1 is provided with a pair of doors (5) (7) for selectively opening and closing the installation space (3). The doors 5 and 7 are rotatably installed in the front and rear of the cabinet 1 with respect to one end thereof on the front surface of the cabinet 1.

2, a burner assembly 200, 200 ′, 200 ″, a nozzle assembly 300, and the burner assembly for mixing gas and air and burning a mixed gas in the cabinet 100. A control unit 400 for controlling the operation of the (200, 200 ', 200 ") is provided. The burner assemblies 200, 200 ′ and 200 ″ combust the mixed gas and guide the combustion gas generated in the combustion process of the air and the mixed gas to form the mixed gas. The nozzle assembly 300 Gas is supplied to form a mixed gas combusted in the burner assemblies 200, 200 ′ and 200 ″. The control unit 400 controls the operation of the burner assemblies 200, 200 ′, 200 ″ and the nozzle assembly 300.

The burner assemblies 200, 200 ′ and 200 ″ include three burner assemblies, that is, first to third burner assemblies 200 and 200 ′ and 200 ″. The first and second burner assemblies 200 and 200 ′ are installed at right and left sides of the cabinet 100, respectively. The third burner assembly 200 ″ is installed at a central portion of the inside of the cabinet 100 corresponding to the first and second burner assemblies 200 and 200 ′. The first to third burners The assemblies 200, 200 'and 200 "are divided according to their size. That is, the first burner assembly 200 is the largest size, the second burner assembly 200 'is the next size, and the third burner assembly 200 "is the smallest size. The burner assemblies 200, 200 ′ and 200 ″ include three burner assemblies, but are not limited thereto, and one or more burner assemblies may be installed in the cabinet 100.

Meanwhile, the first to third burner assemblies 200, 200 ′ and 200 ″ are fixed to the inside of the cabinet 100 with their rear ends fixed to the connection brackets 700, respectively. 700 includes a fixed portion 710 (see FIG. 11) formed in a long rectangular shape to the left and right, and a guide portion 720 (see FIG. 11) extending vertically from the rear end of the fixed portion 710. The fixing part 710 is where the first to third burner assemblies 200, 200 ′ and 200 ″ are fixed. The guide portion 720 serves to guide the front and at the same time to partition the air and combustion gas intake and exhaust through the vent grill 600 to be described below. An inclined guide part 730 (see FIG. 11) is provided at the tip of the guide part 720. The inclined guide part 730 extends upwardly inclined toward the front.

The nozzle assembly 300 is composed of three pieces corresponding to the number of burner assemblies 200, 200 ′ and 200 ″. The nozzle assembly 300 is configured to supply the gas supplied from an external gas supply source. It serves to supply to the first to third burner assemblies 200, 200 ', 200 ". To this end, the nozzle assembly 300 is installed at the inner rear end of the cabinet 100 corresponding to immediately after the first to third burner assemblies 200, 200 ′ and 200 ″, respectively.

The control unit 400 is installed at the inner front end of the cabinet 100 corresponding to the front of the first to third burner assemblies 200, 200 ′ and 200 ″. ), Three valve assemblies 410 are installed in the first to third burner assemblies 200, 200 ′ and 200 ″ to control whether the gas is supplied or not. Three valve assemblies 410 are provided corresponding to the first to third burner assemblies 200, 200 ′ and 200 ″. Knobs 420 are coupled to the valve assembly 410, respectively. The knob 420 is a part held by a user to manipulate the valve assembly 410. The valve assembly 410 is provided with a display lamp 430, respectively. On / off by the valve assembly 410 serves to indicate whether the first to third burner assemblies 200, 200 ', 200 "are ignited to the outside.

The top cover 500 forms an outer appearance of the upper surface of the cooking appliance 10. The top cover 500 substantially shields the top surface of the cabinet 100. The top cover 500 includes a top frame 510 and a top glass 520.

The top frame 510 is formed in a frame shape corresponding to the cabinet 100. The front end of the top frame 510 is provided with three knob through holes 511 through which the knob 420 of the valve assembly 410 passes. In addition, three lamp holes 513 are provided at the front end of the top frame 510 to be adjacent to the knob through hole 511, respectively. The lamp hole 513 penetrates the display lamp 430 of the valve assembly 410. In addition, a plurality of intake and exhaust openings 515 are provided at the rear end of the top frame 510. The intake / exhaust opening 515 serves as an inlet and outlet through which air for burning gas is sucked in the burner assemblies 200, 200 ′, 200 ″, and the combustion gas generated in the process of burning the gas is exhausted. Therefore, in the present embodiment, the three intake and exhaust openings 515 are provided corresponding to the burner assemblies 200, 200 ′ and 200 ″.

The top glass 520 is installed inside the top frame 510. The top glass 520 serves to transfer heat generated in the process of burning the mixed gas in the burner assemblies 200, 200 ′ and 200 ″ to food. A container in which food is placed is seated on an upper surface of the container. Also, a container is mounted on the top glass 520 to indicate a position at which a container corresponding to the burner assemblies 200, 200 ', 200 "is placed. A part (not shown) may be provided.

The vent grille 515 is provided with a vent grill 600. The vent grill 600 sucks air mixed with the gas burned in the burner assemblies 200, 200 ′ and 200 ″ and mixes air with the burner assemblies 200, 200 ′ and 200 ″. It serves to guide the discharge of the combustion gas generated in the process of burning the gas.

Hereinafter, a burner assembly constituting an embodiment of a cooking appliance according to the present invention will be described in more detail with reference to the accompanying drawings.

Figure 3 is an exploded perspective view showing a burner assembly constituting an embodiment of the present invention, Figure 4 is a perspective view showing a top surface of the burner assembly constituting an embodiment of the present invention, Figure 5 is a constituting an embodiment of the present invention Figure 6 is a perspective view showing the bottom of the burner assembly, Figure 6 is a perspective view showing a combustion preventing member constituting an embodiment of the present invention, Figure 7 is an exploded perspective view showing a plug assembly constituting an embodiment of the present invention, Figure 8 is A perspective view showing a thermocouple and a protective member constituting an embodiment of the present invention.

Referring to this, since the first to third burner assemblies 200, 200 ′, 200 ″ constituting an embodiment of the cooking appliance according to the present invention are all the same except for the size thereof, the first to third burner assemblies 200, 200 ′ and 200 ″ are configured to be the same. The first burner assembly 200 (hereinafter referred to as a burner assembly) among the third burner assemblies 200, 200 ′ and 200 ″ will be described. The burner assembly 200 includes a combustion unit, an ignition unit, a mixing unit, and an exhaust unit.

The combustion unit is a place where combustion of the mixed gas is performed, and includes a burner port 210, a port cover 220, and a combustion mat 230. The ignition unit is a place for generating a spark for burning the mixed gas in the combustion unit. In this embodiment, the plug assembly 240 constitutes an ignition unit. The mixing unit mixes gas and air and supplies the mixture to the combustion unit in the form of a mixed gas combusted in the combustion unit. The mixing portion includes a tube assembly 250 and an extension tube 259. The exhaust part serves to guide the exhaust of the combustion gas generated in the process of burning the gas in the combustion part. The exhaust unit includes a burner vane 260, an upper barrier 270, and a lower barrier 280.

The burner port 210 is formed in a polyhedral shape with an upper surface opened. In the present embodiment, the burner port 210 is formed in a cylindrical shape and a hexahedral shape whose front and rear ends are flat. The mixed gas is supplied into the burner port 210.

An inclined surface 211 is provided on the rear surface of the burner port 210. The inclined surface 211 is formed such that the rear surface of the burner port 210 is inclined downward toward the front. Five mixed gas supply holes 212 are formed in the inclined surface 211.

The port cover 220 shields the opened upper surface of the burner port 210. The port cover 220 has a mixed gas guide hole 221 for guiding the mixed gas supplied into the burner port 210 to the combustion mat 230. Substantially, the mixed gas guide hole 221 is formed by cutting a central portion of the port cover 220 into a substantially circular shape.

In addition, the port cover 220 is provided with a mat seating portion 222. The mat seating part 222 of the port cover 220 is formed by stepping a portion of the port cover 220 adjacent to the outer circumference of the mixed gas guide hole 221 downward.

The combustion mat 230 is where the combustion of the mixed gas is substantially made. To this end, the combustion mat 230 is the upper surface of the port cover 220 to shield the mixed gas guide hole 221, more specifically, the inner circumference of the bottom surface of the combustion mat 230 is the mat seating portion 222 It is seated on). In this case, the upper surface of the combustion mat 230 may be located on the same plane as the upper surface of the port cover 220. In addition, the combustion mat 230 may be formed of a ceramic material.

On the other hand, the combustion preventing member 231 is provided in the burner port 210. The combustion preventing member 231 is for preventing the combustion of the mixed gas at the central portion of the combustion mat 230. The prevention of combustion by the combustion preventing member 231 as described above is such that the top glass corresponding to the upper portion of the combustion mat 230 when cooking food contained in a container in which a bottom portion of the bottom surface is recessed upward, such as a casserole. Heat is concentrated in the space between 520 and the bottom of the container to prevent damage to the top glass 520 and / or the container. To this end, the combustion preventing member 231 may be in close contact with the central portion of the bottom surface of the combustion mat 230 or at least reduce the combustion of the mixed gas so as to prevent combustion of the mixed gas in the central portion of the combustion mat 230. So as to be adjacent to the central portion of the bottom of the combustion mat 230.

Referring to FIG. 6, the combustion preventing member 231 includes an obstruction part 232, a support part 233, and a fixing part 234. The obstruction portion 232 is formed in a disc shape. The obstruction 232 is substantially in close contact with the bottom center of the combustion mat 230 or spaced apart from the center of the bottom surface of the combustion mat 230 by a predetermined distance. That is, the obstruction 232 serves to substantially prevent the combustion of the mixed gas at the center of the combustion mat 230. The support part 233 extends downward from both sides of the obstruction part 232 facing each other to support the obstruction part 232 at a predetermined height. That is, the obstruction portion 232 is spaced apart from the bottom surface of the burner port 210 by a height corresponding to the length of the support portion 233. Therefore, the flow of the mixed gas supplied into the burner port 210 is not disturbed by the combustion preventing member 231. The fixing part 234 extends in a direction away from each other at the lower end of the support part 233. The fixing part 234 is fixed to the bottom surface of the burner port 210 by a separate fastener or welding. As described above, in the present embodiment, the combustion preventing member 231 is formed in a bridge shape having a circular upper surface as a whole, but the shape of the combustion preventing member 231 is not limited thereto.

A plurality of hot wires 235 are provided above the combustion mat 230. The hot wire 235 serves to easily identify to the outside whether the mixed gas is burned in the burner assembly 200. To this end, the hot wire 235 is discolored when the mixed gas is burned in the combustion mat 230 and the temperature is increased, so that the user can easily identify whether the combustion gas in the burner assembly 200 is burned. Will be. Both ends of the heating wire 235 is fixed to the upper surface of the first burner band 261. In addition, the heating wire 235 is fixed to the first burner band 261 in the tensioned state. This is to ensure that the heating wire 235 does not sag downward even if its length is increased by increasing the temperature.

7, the plug assembly 240 includes a spark plug 241, a plug target 242, and a plug holder 243. The spark plug 241 and the plug target 242 generate a spark for ignition of the mixed gas. To this end, power is selectively applied to the spark plug 241. The plug target 242 is formed of a metal material and is spaced apart from the spark plug 241 by a predetermined interval. Therefore, when power is applied to the spark plug 241, spark is generated between the spark plug 241 and the plug target 242.

First and second stopping protrusions 241a and 241b are formed on the spark plug 241. The first and second stopping protrusions 241a and 241b may prevent the spark plug 241 from being randomly moved in a state in which the spark plug 241 is seated in the plug seating groove 245 which will be described later. In the present embodiment, a part of the spark plug 241, more specifically, a part of the spark plug 241 seated in the plug seating groove 245 is relatively smaller than the rest of the spark plug 241. It is formed by reducing the volume.

In addition, the plug target 242 is provided with an insertion protrusion 242a. The insertion protrusion 242a is a place to be inserted into the target insertion hole 246 to be described later. In this embodiment, the insertion protrusion 242a is formed by bending a portion of the plug target 242.

To this end, the plug holder 243 includes a holder body 244 and a holder cover 247. The holder body 244, a plug insertion groove 245 in which one side of the spark plug 241 is seated and one end of the plug target 242, that is, a target insertion hole into which the insertion protrusion 242a is inserted ( 246 is formed. In the state where the spark plug 241 is seated in the plug seating groove 245, the first and second stopping protrusions 241a and 241b are respectively adjacent to the holder seating groove 245. In close contact with 244.

And the holder cover 247, the spark plug 241 is seated in the plug seating groove 245 and the plug target 242 is inserted into the target insertion hole 246, the spark plug ( The upper surface of the holder body 244 including the 241 and the plug target 242 is shielded. In this state, the fastener penetrating the holder cover 247 and the holder body 244 is fastened to one side of the first burner van 261, thereby substantially the spark plug 241 and the plug target 242. This is fixed to the first burner band 261.

In this embodiment, the plug holder 243 is formed of a metal material. Therefore, even if a separate ground wire is not used, the plug holder 243 into which the plug target 242 is inserted is fixed to the first burner van 261, thereby enabling grounding of the plug assembly 240.

The tube assembly 250 may include a plurality of mixing tubes 251, an air barrier 252, and an adhesion part 253. The mixing tube 251 serves to guide the mixed gas to the inside of the burner port 210 while the gas and air are substantially mixed. The mixing tube 251 is formed in a cylindrical shape having a diameter corresponding to the projection of the mixed gas supply hole 212 with respect to the vertical plane. In addition, five mixing tubes 251 are provided for each of the tube assemblies 250 corresponding to the mixed gas supply holes 212. And the front end of the mixing tube 251 is cut in a slope corresponding to the inclination of the inclined surface 211. The air barrier 252 is provided at the rear end of the mixing tube 251 long to the left and right. The air barrier 252 is composed of a pair spaced apart by a predetermined interval in the front and rear. In the air barrier 252, the air sucked into the cabinet 100 through the cooling hole 110 flows toward the nozzle assembly 300, thereby preventing the supply of gas and air to the mixing tube 251. It is to prevent the phenomenon. More specifically, referring to FIG. 1, in the process of opening and closing the doors 5 and 7 of the furniture cabinet 1, a large amount of air may be introduced into the installation space 3 at high pressure. As such, the air introduced into the installation space 3 flows toward the nozzle assembly 300 by the air barrier 252 even when the cooling hole 110 is introduced into the cabinet 100. This is to be avoided. The air barrier 252 also serves to substantially connect the mixing tube 251. The close contact portion 253 is provided at the front end of the mixing tube 251. Therefore, the close contact portion 253 has the same slope as the inclined surface 211, is in close contact with the inclined surface 211 is mixed through the mixing tube 251 is supplied to the interior of the burner port 210 It prevents the leakage of gas to the outside. The close contact portion 253 also serves to connect the mixing tube 251 in the same manner as the air barrier 252. The close contact portion 253 is fastened by a fastener (not shown) in close contact with the inclined surface 211. In addition, the tube assembly 250 is provided with a fastening rib 254. Two fastening ribs 254 of the tube assembly 250 are provided on the upper rear of the air barrier 252. Fastening holes 255 are formed in the fastening ribs 254 of the tube assembly 250, respectively. Guide protrusions 256 are provided on upper surfaces of the fastening ribs 254 of the tube assembly 250 adjacent to the fastening holes 255 of the tube assembly 250, respectively. The fastening hole 255 and the guide protrusion 256 of the tube assembly 250 are for fixing the tube assembly 250 and the nozzle assembly 300.

Although not shown, a gasket may be provided between the burner port 210 and the tube assembly 250 to be in close contact with each other, that is, between the inclined surface 211 and the close contact portion 253. The gasket serves to seal between the inclined surface 211 and the close contact portion 253 in order to prevent the mixed gas supplied to the burner assembly 200 from leaking to the outside through the tube assembly 250. Do it.

The extension tube 259 is substantially located inside the burner port 210. The extension tube 259 serves to increase the mixing efficiency of gas and air by extending the length of the mixing tube 251. In other words, by increasing the flow distance that the gas and air can be substantially mixed by the extension tube 259, the mixing efficiency of the gas and air is increased. The rear end of the extension tube 259 is formed to be inclined at the same angle as the front end of the mixing tube 251. In addition, the extension tube 259 is formed to have a maximum length in a range that does not overlap vertically with the combustion mat 230. That is, the extension tube 259 is positioned inside the burner port 210 except for the position corresponding to the projection of the horizontal surface of the combustion mat 230. This is to extend the distance that the gas and air can be mixed as much as possible while preventing the combustion of the mixed gas in the combustion mat 230 by the extension tube 259.

On the other hand, the burner vane 260 is provided above the combustion mat 230. The burner vant 260 includes a first burner vant 261 and a second burner vant 265. The first burner vant 261 serves to guide the combustion gas generated in the process of burning the mixed gas in the combustion mat 230 to the second burner vant 265. The second burner vant 265 serves to guide the combustion gas received from the first burner vant 261 to the vant grill 600. In addition, the first burner vant 261 may also be fixed to the port cover 220 to fix the combustion mat 230.

A heat transfer hole 262 is formed at a central portion of the first burner van 261 to transfer heat generated in the combustion mat 230 to burn the mixed gas to the top glass 520. The heat transfer hole 262 is preferably formed in a circular shape corresponding to the mixed gas guide hole 221.

On the other hand, the first burner band 261 is provided with a guide rib 263. The guide rib 263 of the first burner vant 261 does not substantially disperse the combustion gas generated in the process of burning the mixed gas in the combustion mat 230 to the outside, and the second burner vant 265 It serves as a guide. In addition, the guide rib 263 of the first burner van 261 is the tower corresponding directly to the combustion mat 230 without heat dissipated in the process of burning the mixed gas in the combustion mat 230. It serves to concentrate the glass 520. To this end, the guide rib 263 of the first burner vant 261 extends upward from the upper edge of the first burner vant 261 except for the rear end of the first burner vant 261.

The first burner band 261 is provided with a glass support rib 264. The glass support rib 264 of the first burner vant 261 is for supporting the rear surface of the top glass 520. The glass support rib 264 of the first burner vant 261 extends from the upper end of the guide rib 263 of the first burner vant 261 to the outside of the first burner vant 261.

The second burner vant 265 serves to guide the combustion gas received from the first burner vant 261 to the vant grill 600. The second burner vane 265 is connected to a rear end of the first burner van 261 that is not provided with the guide rib 263 of the first burner vane 261. The second burner vane 265 is formed in a plate shape having a predetermined length in front and rear. The second burner vane 265 may be integrally formed with the first burner vane 261 or separately formed and fixed to the second burner vane 265.

Guide ribs 266 are provided at both end portions of the second burner band 265, respectively. The guide ribs 266 of the second burner vane 265 are upward by a predetermined height at both ends of the second burner vane 265 by the same height as the guide ribs 263 of the first burner vane 261. Extends. Substantially, the guide ribs 266 of the second burner vane 265 are configured to guide the vane grill 600 without the combustion gas generated in the process of burning the mixed gas in the combustion mat 230 to the outside. Play a role.

The second burner vane 265 is provided with a glass support rib 267. The glass support ribs 267 of the second burner vant 267 extend from both ends of the guide ribs 266 of the second burner vant 265. The glass support rib 267 of the second burner vant 265 serves to support the top glass 520 in the same manner as the glass support rib 264 of the first burner vant 261.

In addition, a compartment rib 268 is provided at the rear end of the guide rib 266 of the second burner band 265. The partition rib 268 of the second burner vane 265 extends upwardly more than the guide rib 266 of the second burner vane 265. The compartment rib 268 of the second burner vant 265 serves to partition the combustion gases generated in the process of combusting the mixed gas in the combustion mat 230 of the burner assembly 200, respectively.

On the other hand, an intake flow path Pi (see FIG. 11) is provided below the burner vane 260 and more specifically, the second burner vane 265. Air is mixed in the intake flow path Pi to form a mixed gas combusted by the combustion mat 230. In the present embodiment, the intake flow path Pi is substantially formed by the bottom surface of the cabinet 100 and the bottom surface of the second burner band 265.

The upper barrier 270 is coupled to the upper portion of the second burner vane 265 and is substantially positioned between the top glass 520 and the second burner vane 265. The upper barrier 270 is formed in a c-shape which is opened downwardly so that the outer sides of the upper barriers 270 are in close contact with the inside of the guide ribs 266 of the second burner band 265, respectively. Accordingly, an exhaust flow path Po through which the combustion gas generated in the process of burning the mixed gas in the combustion mat 230 is formed by the second burner vane 265 and the upper barrier 270. However, the upper barrier 270 may be deleted, and the exhaust passage Po may be formed by the second burner band 265 and the top glass 520.

In addition, the upper barrier 270 allows only a part of the heat of the combustion gas flowing through the exhaust passage Po, more specifically, enough heat to be used to warm the food, is transferred to the top glass 520. Accordingly, a warm zone is formed on the top surface of the top glass 520 corresponding to the exhaust passage Po to heat food by the heat of combustion gas flowing through the exhaust passage Po. .

The lower barrier 280 is coupled to the bottom of the burner vane 260, more specifically, the second burner vane 265. Accordingly, the lower barrier 280 is substantially positioned between the second burner vant 265 and the tube assembly 250. The lower barrier 280 serves to prevent heat of the combustion gas flowing through the exhaust passage Po from being transferred to the tube assembly 250 and the nozzle assembly 300. The tube assembly 250 is formed in a U-shape which is opened in a substantially upward direction such that both inner sides thereof closely contact the outer sides of the guide ribs 266 of the second burner band 265.

In addition, gaskets G1 and G2 are respectively provided between the port cover 220 and the first burner vane 261 and between the second burner vane 265 and the lower barrier 280. The gaskets G1 and G2 prevent heat exchange between the port cover 220 and the first burner vant 261 and heat exchange between the second burner vant 265 and the lower barrier 280. .

In the present embodiment, the burner port 210 and the burner in a state in which the burner port 210, the port cover 220, the combustion mat 230, the gasket G1, and the burner vane 260 are stacked up and down. As the vent 260 is fixed by a fastener (not shown), the burner assembly 200 is coupled. At this time, the upper barrier 270 is seated on the upper surface of the burner vane 260, the lower barrier 280 is fixed to the bottom of the burner vane 260 by a fastener (not shown). Of course, the gasket G2 is provided between the burner band 260 and the lower barrier 280.

4 to 8, the first burner band 261 includes a thermocouple 291. The thermocouple 291 is installed so as to penetrate through the first burner van 261, and its front end is located inside the first burner van 261 and the remaining part is located outside the first burner van 261. do. The thermocouple 291 has a tip portion positioned inside the first burner van 261 and a remainder outside the first burner van 261 while the mixed gas is combusted in the combustion mat 230. The predetermined electromotive force is generated by the temperature difference between the parts. In addition, the valve assembly 410 which maintains an open state or opens the valve assembly 410 for supplying a gas forming a mixed gas combusted by the combustion mat 230 according to the electromotive force of the thermocouple 291. Shield).

8, the thermocouple 291 is surrounded by a protection member 293. The protection member 293 is for protecting a portion of the thermocouple 291 positioned substantially inside the first burner band 261. In other words, the protection member 293 is for preventing the thermocouple 291 from being damaged by the heat generated during the combustion of the combustion gas in the combustion mat 230. In this embodiment, an insulator formed of a ceramic material may be used to electrically insulate the thermocouple 291 by the protection member 293.

The protective member 293 is formed in a hexahedron shape having a predetermined length. The protection member 293 is formed with a through hole 294 through which the thermocouple 291 penetrates. One end of the protection member 293 adjacent to the tip of the thermocouple 291 positioned inside the first burner van 261 is formed in a substantially cylindrical shape. The thermocouple 291 and the protective member 293 which penetrate the through-hole 294 are connected to the first burner band 261 at one end of the protective member 293 having a cylindrical shape. The bracket 295 for fixing is seated.

Next, the nozzle assembly constituting the embodiment of the microwave oven according to the present invention will be described in more detail with reference to the accompanying drawings.

9 is an exploded perspective view showing a nozzle assembly constituting an embodiment of the present invention.

* Referring to this, the nozzle assembly 300 constituting the embodiment of the present invention serves to supply the gas to the burner assemblies 200, 200 ', 200 "to form the mixed gas to be burned. To this end, the nozzle assembly 300 is composed of all three, but since the configuration of the nozzle assembly 300 for supplying gas to the burner assemblies 200, 200 'and 200 "are all the same, the following one Only the nozzle assembly 300 will be described. The nozzle assembly 300 includes a nozzle body 310, a nozzle cover 320, a plurality of injection nozzles 330, and a nozzle gasket 340.

The nozzle body 310 forms the exterior of the nozzle assembly 300. The nozzle body 310 is formed to be long left and right at a length corresponding to the left and right widths of the burner assemblies 200, 200 ′ and 200 ″, and an upper surface of the nozzle body 310 is opened. For supply, a supply hole 311 to which one end of a gas hose (not shown) for connection with the valve assembly 410 is connected and a plurality of injection holes 312 to which the injection nozzles 330 are coupled are formed. The supply hole 311 is provided on one side of the nozzle body 310. The injection hole 312 is the nozzle body facing the rear end of the burner assembly (200, 200 ', 200 "). It is provided on the front of the 310. The injection holes 312 are formed in the number corresponding to the injection nozzle 330, respectively. The inner periphery of the supply hole 311 and the injection hole 312 is provided with a screw thread for coupling with the gas hose and the injection nozzle 330.

In addition, the nozzle body 310 is formed to minimize the thickness in the direction orthogonal to the direction in which the gas is injected through the injection hole 312 of the remaining portion other than the injection hole 312. This is to more efficiently mix the gas injected from the injection nozzle 330 and the air flowing through the intake flow path Pi. In detail, the thickness of the remaining portion of the nozzle body 310 except for the injection hole 312 is reduced, so that a larger amount of air is substantially supplied toward the injection nozzle 330. Therefore, the mixture of the gas and air injected from the injection nozzle 330, that is, the mixed gas is more efficiently formed.

In this embodiment, the nozzle body 310 is formed by die casting aluminum. The supply hole 311 and the injection hole 312 is formed by a tapping process. Therefore, compared with the case of forming the nozzle body 310 by extrusion molding, it is possible to expect a reduction in the amount of material used and labor.

The nozzle cover 320 serves to shield the upper surface of the nozzle body 310 to be opened. Therefore, a predetermined space is substantially formed between the nozzle body 310 and the nozzle cover 320. Such a space is in communication with the supply hole 311 and the injection hole 312.

The injection nozzle 330 is for injecting the gas delivered through the injection hole 312 at a high pressure toward the tube assembly 250, more specifically, the mixing tube 251. The injection nozzles 330 are respectively coupled to the injection holes 312, and the injection nozzles 330 are spaced apart from the rear end of the mixing tube 251 by a predetermined distance while being coupled to the injection holes 312. do. The injection nozzle 330 is screwed to the injection hole (312). To this end, a thread corresponding to the thread of the injection hole 312 is provided on the outer circumferential surface of the injection nozzle 330.

In addition, the nozzle assembly 300 is provided with a fastening rib 313. The fastening rib 313 of the nozzle assembly 300 is provided on the front upper end of the nozzle body 310. The fastening rib 313 of the nozzle assembly 300 is for fixing the tube assembly 250 and the nozzle assembly 300. To this end, through holes 314 and guide holes 315 are provided in the fastening ribs 313 of the nozzle assembly 300. The through hole 314 of the nozzle assembly 300 is a place where a fastener (not shown) fastened to the fastening hole 255 of the tube assembly 250 passes. The guide hole 315 of the nozzle assembly 300 is where the guide protrusion 256 of the tube assembly 250 is inserted. Therefore, the tube assembly 250 and the nozzle assembly 300 are inserted into the guide hole 315 of the nozzle assembly 300 by the guide protrusion 256 of the tube assembly 250, whereby their relative positions are determined. In the above, the fastener penetrating the through hole 314 of the nozzle assembly 300 is fixed by being fastened to the fastening hole 255 of the tube assembly 250.

The nozzle gasket 340 is provided between the nozzle body 310 and the nozzle cover 320. The nozzle gasket 340 serves to shield a gap between the nozzle body 310 and the nozzle cover 320. That is, the gas supplied through the supply hole 311 by the nozzle gasket 340 and injected through the nozzle hole 312 leaks through the gap between the nozzle body 310 and the nozzle cover 320. The phenomenon is prevented. In addition, the nozzle gasket 340 is provided with an identification rib 341. The identification rib 341 is for easily identifying whether the nozzle gasket 340 is installed in a state in which the nozzle body 310 and the nozzle cover 320 are coupled to each other. To this end, the identification rib 341 is formed between the nozzle body 310 and the nozzle cover 320 while the nozzle gasket 340 is installed between the nozzle body 310 and the nozzle cover 320. Exposed outside of the space.

Next, a valve assembly constituting an embodiment of the microwave oven according to the present invention will be described in more detail with reference to the accompanying drawings.

10 is a perspective view showing a valve assembly constituting an embodiment of the present invention.

Referring to this, the valve assembly 410 constituting the embodiment of the present invention selectively selects a gas into the nozzle assembly 300, substantially the first to third burner assemblies 200, 200 ′, 200 ″. At the same time, it serves to selectively flash the display lamp 430. To this end, the valve assembly 410 includes a valve 411, first and second driving levers 415, 416, and an ignition switch 417. And a flashing switch 418.

The valve 411 serves to control whether the gas delivered to the nozzle assembly 300 is supplied and the amount of gas supplied to the nozzle assembly 300. The valve 411 includes a valve body 412, a valve shaft 413, and an elastic member 414.

The valve body 412 is provided with a predetermined flow path (not shown) and a pair of connection holes (not shown) communicating with the flow path. One of the connection holes is connected to a gas hose (not shown) for connection with an external gas supply source (not shown), and the other one of the connection holes to the nozzle assembly 300 for connection with the nozzle assembly 300 The other end of the gas hose (not shown) connected to the supply hole 411 of the 300 is connected. And the inside of the valve body 412 is provided with a plug (not shown) for adjusting the opening and closing degree of the valve 411. Since the configuration for adjusting the opening and closing of the valve 411 by the plug is a well-known technique, detailed description thereof will be omitted.

The valve shaft 413 is rotatably installed through the valve body 412. The knob 420 and the plug are coupled to both ends of the valve shaft 413, respectively. Therefore, when the user presses the knob 420, the plug moves in the longitudinal direction of the valve shaft 413 to open the valve 411. When the user rotates the knob 420 clockwise or counterclockwise about the valve shaft 413, the plug controls the opening degree of the flow of the valve body 412. In the present embodiment, when the knob 420 rotates clockwise, the opening degree of the valve 411 by the plug is increased, and when the knob 420 rotates counterclockwise, the plug The opening degree of the valve 411 is reduced.

In addition, the elastic member 414 serves to give the valve shaft 413 an elastic force in a direction in which the plug shields the valve 411. Therefore, when the user removes the force pushing the knob 420 in the longitudinal direction of the valve shaft 413, the valve shaft 413 is moved by the elastic force of the elastic member 414, the valve 411 is Shielded by the plug.

The first and second driving levers 415 and 416 rotate in conjunction with the rotation of the valve shaft 413. The first and second driving levers 415 and 416 serve to turn on / off the ignition switch 417 and the flashing switch 418, respectively. That is, when the valve shaft 413 rotates, the first and second driving levers 415 and 416 rotate in synchronization with the valve shaft 413 to turn on or off the ignition switch 417 and the flashing switch 418, respectively. . In the present embodiment, the ignition switch 417 and the flashing switch 418 in a state in which the valve shaft 413 rotates clockwise in the drawing and the opening of the flow path of the valve body 412 is maximized by the plug. ) Is on.

The ignition switch 417 generates an electrical signal for generating sparks in the spark plug 241. That is, when the fixed terminal (not shown) and the mobile terminal 417 'contact with each other by the ignition switch 417 by the first driving lever 415, the current is applied to the ignition plug 241. Sparks for combustion of the mixed gas supplied to the first to third burner assemblies 200, 200 ′ and 200 ″ are generated.

The blinking switch 418 generates an electrical signal for blinking the display lamp 430. To this end, the flashing switch 418 is provided with a fixed terminal (not shown) and a mobile terminal 418 '. That is, the flashing switch 418 generates an electrical signal to turn on the display lamp 430 when the fixed terminal and the mobile terminal 418 'are turned off by being spaced apart from each other by the second driving lever 416. . In addition, the flashing switch 418 generates an electrical signal to turn off the display lamp 430 when the fixed terminal and the mobile terminal 418 'are brought into contact with each other by the second driving lever 416. .

Next, a vent grill constituting an embodiment of the microwave oven according to the present invention will be described in more detail with reference to the accompanying drawings.

11 is a longitudinal sectional view showing a part including a vent grill in an embodiment of the present invention.

Referring to this, the vent grill 600 is formed in a long and flat hexahedral shape to the left and right. The upper surface of the vent grill 600 is formed to be inclined downward toward the front, the rear surface of the vent grill 600 is formed to be inclined upward toward the front. A plurality of intake holes 610 and exhaust holes 620 are formed on the top surface of the vent grill 600. The intake hole 610 is a place where air mixed with gas to form a mixed gas combusted in the burner assemblies 200, 200 ′ and 200 ″ is sucked into the cabinet 100. 620 is a place where the combustion gas generated in the combustion process of the mixed gas in the burner assemblies 200, 200 ′, 200 ″ is discharged from the inside of the cabinet 100 through which the combustion gas is discharged. . In the present exemplary embodiment, the intake hole 610 is provided at the rear end of the upper surface of the vent grill 600, and the exhaust hole 620 is provided at the front end of the upper surface of the vent grill 600. The separation of the intake hole 610 and the exhaust hole 620 is made by the guide portion 720 of the connecting bracket 700. That is, the inlet hole 610 or the exhaust hole 620 is a hole formed in the front end or the rear end of the upper surface of the vent grill 600 corresponding to the rear or front of the guide portion 720, respectively. . In addition, the air sucked through the intake hole 610 serves as a kind of air curtain with respect to the combustion gas discharged through the exhaust hole 620. Therefore, the phenomenon that the surface of the kitchen cabinet 1 or the wall of the kitchen, which is the rear of the cooking apparatus 10, by the combustion gas discharged through the exhaust hole 620 is minimized. The intake hole 610 and the exhaust hole 620 communicate with the intake passage Pi or the exhaust passage Po, respectively. In the present embodiment, the intake hole 610 and the exhaust hole 620 are positioned to be spaced apart in front and rear so as not to cross left and right.

In addition, an auxiliary intake hole 630 is formed at the upper end of the back grill 600. The auxiliary intake hole 630 is also mixed with a gas to intake air forming the mixed gas combusted in the burner assemblies 200, 200 ′ and 200 ″. Accordingly, the intake hole 610 is substantially inhaled. And air sucked through the auxiliary intake hole 630 flows through the intake passage Pi to be mixed with the gas to form a mixed gas.

Next, the operation of an embodiment of a cooking appliance according to the present invention will be described in detail with reference to the accompanying drawings.

13 and 14 are operation state diagrams showing the on / off process of the valve assembly in the embodiment of the cooking appliance according to the present invention, Figure 14 is a longitudinal sectional view showing the flow of air in the embodiment of the cooking appliance according to the present invention. to be. Hereinafter, for convenience of description, a process of cooking food in the first burner assembly 200 among the first to third burner assemblies 200, 200 ′, 200 ″ will be described.

First, referring to FIG. 13, in a state where the valve 411 of the valve assembly 410 is shielded, the ignition switch 417 is turned off by the first driving lever 416. The flashing switch 418 maintains the on-operation state by the second driving lever 417. Therefore, no gas is supplied to the nozzle assembly 300 (see FIG. 10), no spark is generated in the spark plug 241 (see FIG. 3), and the display lamp 430 (see FIG. 1) is also turned off. Will be maintained.

Referring to FIG. 14, when the user rotates the knob 420 (see FIG. 1) clockwise to open the valve 411, the valve shaft 413 to which the knob 420 is coupled. Rotate clockwise on the drawing. Therefore, the valve 411 is opened to start supplying gas to the nozzle assembly 300. In addition, the gas supplied to the nozzle assembly 300 is mixed with air in the cabinet 100 and supplied to the first burner assembly 200 through the tube assembly 250 in the form of a mixed gas.

In addition, when the knob 420 continues to rotate clockwise in the drawing, the valve shaft 413 also rotates in the clockwise direction in the drawing. When the opening degree of the valve 411 is maximized by the rotation of the knob 420 in the clockwise direction and the rotation of the valve shaft 413 in the clockwise direction, the first drive is performed. The ignition switch 417 is turned on by the lever 415. Accordingly, a current is applied to the spark plug 241 to generate sparks, and the mixed gas supplied to the first burner assembly 200 is ignited and combusted. In addition, when the opening degree of the valve 411 is maximized, the flashing switch 418 is turned off. Accordingly, the display lamp 430 is turned on so that the user can recognize that the mixed gas is being burned in the first burner assembly 200.

As such, when the mixed gas supplied to the first burner assembly 200 is ignited by the spark generated from the spark plug 241, the knob 420 is rotated counterclockwise in the drawing to the valve 411. Adjust the degree of opening. Therefore, substantially the amount of the mixed gas supplied to the first burner assembly 200 is adjusted to control the fire power of the mixed gas combusted in the first burner assembly 200.

Referring to FIG. 14, heat generated while the mixed gas is ignited and combusted in the first burner assembly 200 and the combustion mat 230 is transferred to the top surface of the top glass 520 through the top glass 520. Delivered to a seated container. Thus, the container is heated to cook food contained in the container substantially.

At this time, the combustion of the mixed gas is hindered by the combustion preventing member 231 in the central portion of the combustion mat 230. Therefore, even when a container such as a casserole is seated on the top surface of the top glass 520, a phenomenon in which heat is transferred to a space between the top surface of the top glass 520 and the bottom of the container is prevented. Therefore, heat is concentrated in the space between the top surface of the top glass 520 and the bottom surface of the container, thereby preventing the top glass 520 from being damaged.

Meanwhile, high temperature combustion gas is generated while the mixed gas is burned in the combustion mat 230. Such combustion gas flows through a space formed by the second burner band 265 and the upper barrier 270, that is, through the exhaust flow path Po. The combustion gas is exhausted to the outside through the exhaust hole 620 of the vent grill 600 communicating with the exhaust passage Po. At this time, since the combustion gas is relatively high temperature, the exhaust flow path Po flows by convection and is discharged to the outside of the cabinet 100 through the exhaust hole 620 to the outside of the cabinet 100. The combustion gas discharged to the outside of the cabinet 100 through the exhaust hole 620 is guided forward by the guide part 720 of the connection bracket 700. Therefore, the phenomenon that the combustion gas discharged through the exhaust hole 620 contaminates the rear wall, that is, the wall of the kitchen is prevented.

In addition, the upper barrier 270 is a part of the heat of the combustion gas flowing through the exhaust passage (Po), that is, only the heat enough to heat the food to the top glass 520 corresponding to the upper portion of the exhaust passage (Po) Delivered. Therefore, food can be heated by using a warm zone formed in a part of the top glass 520 corresponding to the exhaust passage Po. In addition, a phenomenon in which heat of the combustion gas flowing through the exhaust passage Po is transferred to the tube assembly 250 by the lower barrier 280 is prevented.

In addition, when the combustion gas is discharged into the room through the exhaust hole 620, the pressure inside the cabinet 100 is relatively lowered. Therefore, the air in the room is formed between the bottom surface of the cabinet 100 and the bottom surface of the second burner vant 265 through the intake hole 610 and the auxiliary intake hole 630 of the vent grill 600. It flows into the cabinet 100 through a flow path Pi. As described above, the air flowing into the cabinet 100 is mixed with the gas injected from the nozzle assembly 300 and supplied to the first burner assembly 200 in the form of a mixed gas. . That is, in this embodiment, the supply of air for the combustion of the gas in the first burner assembly 200 and the discharge of the combustion gas are made by convection according to the temperature difference.

Meanwhile, referring to FIGS. 1 and 2, the air inside the installation space 3 of the cabinet 1 in which the cabinet 100 is installed is connected to the cabinet through the cooling holes 110 of the cabinet 100. Air is sucked into the interior of 100 to flow the cooling flow path Pc. As such, the air flowing through the cooling flow path Pc cools the various components constituting the control unit 400 and is discharged through the cooling hole 110.

In the process of opening and closing the doors 5 and 7 of the cabinet 1, a large amount of air may be introduced into the installation space 3 at high pressure. However, in the present embodiment, even though the air introduced into the installation space 3 is introduced into the cabinet 100 through the cooling hole 110, the nozzle assembly 300 is formed by the air barrier 252. The phenomenon of flowing toward the side is prevented. Therefore, the phenomenon that the gas injected from the nozzle assembly 300 is not accurately flowed toward the tube assembly 250 by the air introduced into the cabinet 100 through the cooling hole 110 is prevented.

Within the scope of the basic technical spirit of the present invention as well as many other modifications are possible to those skilled in the art, the scope of the present invention should be interpreted based on the appended claims. .

In the above-described embodiment, the cooker has been described as a built-in type installed in a furniture cabinet, but is not necessarily limited thereto. That is, of course, the cooking appliance is also applicable to the self-standing type.

In addition, in the above-described embodiment, there is no separate cooling fan for cooling the electric component including a control unit installed inside the cabinet. However, of course, a cooling fan may be provided for more efficient cooling of the electric component.

According to the cooking apparatus according to the present invention configured as described above, the following effects can be expected.

In the present invention, the intake flow path through which the air sucked for the formation of the mixed gas flows and the exhaust flow path through which the combustion gas generated and discharged by the combustion of the mixed gas flows between the cabinet and the burner assembly, and between the burner assembly and the top glass. Is formed. Therefore, the combustion of the mixed gas, the intake of air and the discharge of the combustion gas can be made simpler configuration.

Further, in the present invention, various components constituting the burner assembly are fastened and fastened by fasteners. This makes it easier to construct the burner assembly.

The burner assembly according to the present invention includes a combustion section, an ignition section, a mixing section, and an exhaust section. Therefore, the composition of the product is simplified by mixing, burning, igniting and exhausting the mixed gas by one burner assembly.

In the present invention, combustion of gas at the center of the combustion mat is prevented by the combustion preventing member. Therefore, when cooking food contained in a container in which the bottom of the bottom is inclined upward, such as a casserole, heat is prevented from being concentrated in the space between the top glass and the bottom of the container, thereby minimizing damage to the product or / and the container. You can do it.

On the other hand, in the present invention, the length of the mixing tube to mix the gas and air to form a mixed gas is substantially increased by the extension tube. Therefore, it is possible to reduce the size of the overall product while maintaining the mixing efficiency of the mixed gas.

In addition, in the present invention, a gasket is added to the close contact portion of the burner assembly and the tube assembly. Therefore, the phenomenon that the mixed gas supplied to the burner assembly is prevented from leaking to the outside through the gap between the burner assembly and the tube assembly is prevented, thereby increasing the safety of the product.

According to the present invention, a separate component such as a grounding wire for grounding the plug assembly is eliminated. Therefore, the product can be configured more simply, it can be expected to reduce the manufacturing cost of the product.

In addition, in the present invention, by one valve assembly, the supply of gas and the amount of the supplied gas are controlled, the operation of the spark plug and the blinking of the display lamp are made. Therefore, the number of parts constituting the product can be reduced.

Furthermore, according to the present invention, the nozzle body constituting the nozzle assembly is formed by die casting, and the supply hole and the injection hole are formed by tapping the nozzle body. Therefore, it is possible to reduce the amount of material and labor required for the manufacture of the product.

In the present invention, the thickness of the nozzle body is minimized except for the injection hole to which the injection nozzle is coupled. Therefore, the mixture of the gas injected from the injection nozzle and the air sucked into the cabinet, that is, the mixed gas can be formed more efficiently.

In the present invention, the thermocouple which generates an electromotive force for maintaining the open state of the valve assembly or shielding the opened valve assembly according to whether or not the mixed gas in the burner assembly is burned out is protected by the protection member. Therefore, the durability and operation reliability of the product are improved.

In the present invention, the intake of air for the formation of the mixed gas and the discharge of the combustion gas generated in the process of the mixed gas is combusted by the convection by the temperature difference between the air and the combustion gas. Therefore, a configuration such as a separate fan for the formation of the mixed gas and / or the discharge of the combustion gas is unnecessary, thereby simplifying the product.

In addition, in the present invention, the combustion gas discharged through the vent hole of the vant grill is discharged upwardly inclined toward the front. In addition, the air sucked through the intake hole of the vant grill serves as an air curtain to prevent the combustion gas discharged through the exhaust hole from coming into contact with the wall of the cabinet or kitchen provided at the rear of the cooking apparatus. Therefore, the phenomenon that the indoor pollution is minimized while the combustion gas is discharged.

1 is a perspective view showing an embodiment of a cooking appliance according to the present invention.

Figure 2 is an exploded perspective view showing an embodiment of the present invention.

Figure 3 is an exploded perspective view showing a burner assembly constituting an embodiment of the present invention.

Figure 4 is a perspective view showing the top of the burner assembly constituting an embodiment of the present invention.

5 is a perspective view showing the bottom of the burner assembly constituting an embodiment of the present invention.

6 is a perspective view showing a combustion preventing member constituting an embodiment of the present invention.

Figure 7 is an exploded perspective view showing a plug assembly constituting an embodiment of the present invention.

Figure 8 is a perspective view showing a thermocouple and a protective member constituting an embodiment of the present invention.

9 is an exploded perspective view showing a nozzle assembly constituting an embodiment of the present invention.

10 is a perspective view showing a valve assembly constituting an embodiment of the present invention.

Figure 11 is a longitudinal sectional view showing a portion including the vent grill in the embodiment of the present invention.

12 and 13 is an operation state showing the on / off process of the valve assembly in the embodiment of the cooking appliance according to the present invention.

Figure 14 is a longitudinal sectional view showing the flow of air in the embodiment of the cooking appliance according to the present invention.

Claims (11)

A burner assembly in which the mixed gas is combusted to transfer heat to the heating material through the heat transfer medium; A nozzle assembly into which a gas forming the mixed gas is injected; An intake air passage through which air forming the mixed gas flows; And An exhaust passage through which combustion gas generated by combustion of the mixed gas flows; Including, And the intake passage and the exhaust passage overlap vertically, and the air flowing through the intake passage and the combustion gas flowing through the exhaust passage flow in opposite directions by convection caused by a temperature difference. The method of claim 1, And a vent grill including an intake hole through which air flowing through the intake passage is sucked and an exhaust hole through which the combustion gas flowing through the exhaust passage is discharged. The method of claim 1, The intake passage is provided below the exhaust passage. The method of claim 1, And an intake port through which the air flowing through the intake flow path is sucked in and an exhaust port through which the combustion gas flowing through the exhaust flow path are discharged are spaced apart in front and rear so as not to cross left and right on the same plane. The method of claim 1, Cooking apparatus further comprising a connection bracket for connecting the burner assembly consisting of a plurality. The method of claim 5, wherein The connecting bracket includes a guide unit for partitioning the air sucked into the intake passage and the combustion gas discharged by flowing through the exhaust passage. The method of claim 6, The connecting bracket further includes an inclined guide part provided at an upper end of the guide part to guide the combustion gas flowing in the exhaust flow path to be inclined upwardly toward the front of the cabinet. An intake hole provided on one surface of which air is sucked for combustion of gas in the burner assembly; And An exhaust hole disposed on the one surface adjacent to the suction hole and spaced apart from the intake hole in the front and rear directions, and the combustion gas discharged from the burner assembly in the process of burning the gas; Including, Intake of air through the intake hole and the exhaust hole and discharge of the combustion gas are performed by convection due to a temperature difference between air and the combustion gas, and the air sucked through the intake hole and the combustion gas discharged through the exhaust hole. Are cooking appliances that flow in opposite directions. An intake hole provided on one surface and into which air is sucked; An exhaust hole provided at a position where the intake hole is not intersected with the intake hole from side to side and in which air is discharged; An intake flow passage through which air sucked through the intake hole flows in a horizontal direction; And An exhaust passage through which air discharged through the exhaust hole flows in a horizontal direction opposite to a flow direction of air flowing through the intake passage; Cooking appliance comprising a. The method according to claim 8 or 9, The intake hole and the exhaust hole is provided in the rear end of the upper cooking appliance. The method of claim 9, Air sucked through the intake hole flows from the rear to the front along the intake passage, Air exhausted through the exhaust hole flows from the front to the rear along the exhaust flow path.

Images