Patent Publication Number: US-2012037147-A1

Title: Cooking appliance

Description:
BACKGROUND OF THE INVENTION 
     1. Technical Field 
     The present disclosure relates to a cooking appliance, and more particularly, to the cooking appliance capable of cooking by a grill. 
     2. Description of the Related Art 
     The cooking appliance is one of electrical appliances cooking food by heating the food to be cooked to allow a user to eat. 
     Such a cooking appliances are classified depending on the type of heat sources heating the food to be cooked and forms to be disposed. 
     First, the cooking appliances are classified into a microwave oven and an oven depending on the type of heat sources heating the food to be cooked. Here, the microwave oven heats the food by supplying high-frequency to a shielded space accommodating the food and the oven cooks the food by heating air of the shielded space accommodating the food. 
     Further, the cooking appliances are classified into a gas cooking appliance and an electric cooking appliance depending on the type of heat sources heating the food to be cook. Here, the gas cooking appliance heats the food with a flame generated by burning the gas to be supplied and the electrical cooking appliance heats the food with a heater heated by electricity to be supplied. 
     The cooking appliances are classified into built-in type of cooking appliances, free-stand type of cooking appliances and wall-mounted type of cooking appliances depending on forms to be disposed. Here, the built-in type of cooking appliances are disposed between kitchen furnitures disposed at a kitchen space, the free-stand type of cooking appliances is disposed at any desired location in the kitchen, and the wall-mounted type of cooking appliances are disposed at a wall of the kitchen space. 
     Recently, various technologies are used to satisfy various requirements of the user. 
     Further, nowadays, various functions are added to satisfy various requirements of the user, and the added functions include function reducing cooking time required for cooking the food by complexly disposing heat sources or insulation function for stability improvement of the configuration accommodated in the kitchen furnitures, and reconfiguration of flow passage for discharge of the discharge gas generated when cooking the food and cooling of the product. 
     SUMMARY OF THE INVENTION 
     An object of the disclosure is to provide a cooking appliance capable of concentratedly heating. 
     Another object of the disclosure is to provide a cooking appliance having a wide cooking space. 
     The cooking appliance of the disclosure comprises a cavity, in which the top thereof has a curvature, providing cooking space of food; a first heat source positioned at the top of the cavity while having the curvature corresponding to the top surface of the cavity and heating interior space of the cavity; a first heat source positioned at the bottom of the cavity and heating interior space of the cavity; and a discharge port discharging the discharge gas into the exterior space. 
     The cooking appliance in another aspect of the disclosure comprises a cavity providing a cooking space of food; a separation plate partitioning interior space of the cavity into top space and bottom space; a first heat source disposed in the top of the cavity and heating the interior space of the cavity; and a second heat source disposed in the bottom of the cavity and heating the interior space of the cavity, wherein front cross sections of the top space and the bottom space of the cavity partitioned by the separation plate are different from each other. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is a perspective view showing shape of the cooking appliance according to an embodiment of the disclosure. 
         FIG. 2  is a side cross section view showing configuration of the cooking appliance according to an embodiment of the disclosure. 
         FIG. 3  is a front cross section view showing cavity of the cooking appliance according to an embodiment of the disclosure. 
         FIG. 4  schematically shows configuration for a first heat source disposed at top of the cavity of the cooking appliance according to an embodiment of the disclosure. 
         FIG. 5  is a front cross section view showing cavity of the cooking appliance according to another embodiment of the disclosure. 
     
    
    
     DESCRIPTION OF THE PREFERRED EMBODIMENTS 
     Hereinafter, a cooking appliance in the disclosure will be described in detail with reference to attached drawings. 
     However, an embodiment for an idea of the disclosure is not limited to the embodiment described below and one skilled in the art understanding an idea of the disclosure may easily propose another embodiment included within range the same idea by addition, change, deletion and the like of the constituents but they also will be included in an idea of the disclosure. 
     Further, an embodiment of the disclosure is described for a gas oven for ease of the descriptions but not limited to it and may be applied to all types of cooking appliance. 
     Further, the term used in the specifications or claims is the concept selected for ease of the descriptions and therefore, should be reasonably interpreted to be coincided to the technical idea of the disclosure so as to grasp the technical content of the disclosure. 
       FIG. 1  is a perspective view showing shape of the cooking appliance according to an embodiment of the disclosure, and  FIG. 2  is a side cross section view showing configuration of the cooking appliance according to an embodiment of the disclosure. 
     Further,  FIG. 3  is a front cross section view showing a cavity of the cooking appliance according to an embodiment of the disclosure. The cooking appliance, illustrated as a gas oven range, according to an embodiment of the disclosure will be described with reference to drawings shown. 
     The shape for the cooking appliance of the disclosure has overall roughly rectangular type. In the cooking appliance, a cooktop portion  100  is positioned at the upper to cook food by heating food placed in the top or the bowl of the food, and a oven portion  200  is positioned at the bottom of the cooktop portion  100  to cook the food by accommodating the food in the interior space and heating the space containing the food by a number of heat source. 
     A drawer portion  300  is positioned at the bottom the oven portion  200  to keep cooked food warm or form the space of relatively low temperature to cook the food by heating the food at low temperature. 
     Therefore, in the cooking appliance of the disclosure, the cooktop portion  100  is positioned at the upper, the drawer portion  300  is positioned at the lower, and the oven portion  200  having the largest volume is positioned at center the cooking appliance, that is, space between the cooktop portion  100  and the drawer portion  300 . 
     The cooktop portion  100  having the shape of roughly the rectangular forms a certain degree of the interior space and a plurality of top burner  110  is disposed in the interior space to cook food by heating food placed in the top or the bowl of the food. 
     The top surface of the cooktop portion  100  is formed by a top plate  120 , the top plate  120  having a certain degree of thickness has a square plank type and a number of burner holes having a certain degree of diameter is formed. The number of top burner  110  passing through the burner is disposed to be protruded upward at a certain degree from the top surface of the top plate  120 . 
     Further, a supporting member  130  supporting the bowl of the food is disposed at the top surface of the top plate  120 . The supporting member  130  is formed by material having a certain degree of strength to support the bowl of the food placed in the top surface thereof. 
     A controller  140  is positioned at front end of the cooktop portion  100  to control the cooktop portion  100 , the oven portion  200  and the drawer portion  300  by a user. In the controller  140 , an operation portion  150  directly operating the heat source is composed of a number of knob type when the user use the cooktop portion  100 , the oven portion  200  and the drawer portion  300  to cook the food, and a display portion  160  representing as screen or image, speech signal is disposed to check operating condition of the cooktop portion  100 , the oven portion  200  and the drawer portion  300 . 
     It is possible that the operation portion  150  operating directly the number of heat source is also composed of various type other than knob type, for example, button or wheel type. That is, if it is configured that the user may operate the number of heat source, some type of configuration will be also fine. 
     The oven portion  200  is positioned at the bottom of the cooktop portion  100 . The oven portion  200 , at which the front thereof is totally opened, has a certain degree of interior space, a cavity  210  is positioned at the interior space thereof to provide space cooking the food, and a number of heat source is disposed at the outside of the cavity  210 . 
     Likewise, the interior space of the cavity  210  is heated by the number of heat source composed outside of the cavity  210  and therefore, the food positioned at the interior space of the cavity  210  is heated and cook by hot air of the interior space of the cavity  210 . 
     In the cavity  210 , in which the top surface thereof has a constant curvature, having the interior space and opened front, the food to be cook or the cook food enter the interior space and the exterior space through the opened front and an oven door  220  is revolvably mounted in the front of the oven portion  200  to open and close the interior space of the cavity  210 . 
     The oven door  220  having a certain degree of thickness has a square plank type, and a perspective window  222  is formed in center of the oven door  220  to check cooking condition or operating condition of the food accommodated in the interior space of the cavity  210  without rotating the oven door  220  by the user. 
     The cavity  210  disposed at the interior space of the oven portion  200 , in which top surface thereof has curvature and its center has shape to be round upward, is provided as cooking space of the food, and the number of first heat source  230  is disposed at the top of the cavity  210  to heat the interior space of the oven portion  200 . 
     A door handle  224  easily rotating the oven door  220  is disposed at front of the oven door  220  when the user rotates the oven door  220 . It is possible to form the door handle  224  to be protruded forward from front of the oven door  220  and to form the door handle  224  to be depressed backward to allow the user to grasp. 
     That is, some type of the door handle  224  to allow the user to easily grasp when rotating the oven door  220  by the user will be fine, and since the cavity  210  perform function providing the space cooking the food in the interior space thereof, if the type of the cavity  210  may perform such a function, some type of the cavity will be fine. 
     Further, the drawer portion  300 , in which the top surface thereof is opened rectangular, includes a heat source disposed in the bottom thereof or the bottom side the interior space and heating the interior space of the drawer portion  300 , it is also possible that the heat source is disposed in majority and in a various type. 
     The drawer portion  300  is mounted to be sled back and forth to forward slide if necessary by the user and then, accommodates and keeps the food or the bowl of the food or cooks the food. The drawer handle  310  disposed in the front of the drawer portion  300  and for grasping to allow the user to slide the drawer portion  300  is disposed. 
     On the other hand, the oven portion  200  is formed by a heat storage member  226  storing heat to be applied to an outer wall. The heat storage member  226  is made of material of stone and the like and slowly radiates heat to be heated by the number of heat source disposed in the outside of the cavity  210  in the condition accumulated at a certain degree in the inside of the heat storage member  226 . 
     Hereinafter, the oven portion  200  will be described in more detail with reference to the attached drawings. 
     The cavity  210  seen forward has curvature to be rounded at the center of the top surface thereof, and a number of first heat source  230  heating the interior space of the cavity along with the top of the cavity  210  is disposed in the top of the cavity  210  having curvature to be rounded upward. 
     A surface burning burner generating flame while burning on the surface is used as the first heat source  230 . A ceramic burner is mainly used as the face burning burner, and it is also possible to use a different type of heat source. However, since location of the first heat source  230  is mounted in the top surface of the cavity  210 , it is preferable to mount the face burning burner. 
     Further, the first heat source  230  is mounted along with the top surface having curvature of the cavity  210  and therefore a contact portion between the first heat source  230  and the cavity  210  is formed to have the curvature corresponding to the top of the cavity  210 . Thus, it is preferable to closely mount the burning portion of the first heat source  230  in the top of the cavity  210 . 
     Of course, the burning portion of the first heat source  230  has not a certain degree of the curvature, composes a additional structure, that is, a fastening member, and may be formed to be closed with the top surface of the cavity  210  while fastening the fastening member having curvature corresponding to the top of the cavity  210  to the top of the cavity  210  or edge portion for burning portion of the first heat source  230 . 
     Likewise, forming the first heat source  230  and the top surface of the cavity  210  to be closed is to heat the interior space of the cavity  210  without leaking burning heat generating while burning gas in the first heat source  230  to the outside. 
     Hereinafter, configuration for a gas supply portion of the cooking appliance according to an embodiment of the disclosure will be described with reference to  FIG. 4 .  FIG. 4  schematically shows configuration for a gas supply portion of the cooking appliance according to an embodiment of the disclosure. 
     The gas supply portion  240  supplying mixture gas to the first heat source  230  is disposed at the back of the first heat source  230 . In the drawing, the gas supply portion  240  includes the gas mixture tube  241  generating mixture gas while simultaneously introducing gas and outer air. 
     The front edge portion of the gas mixture tube  241  is disposed to be communicated with a main mixture tube  242  at length disposed in the direction to be crossed with the gas mixture tube  241  and having circular pipe type with a certain degree of diameter. 
     As the gas mixture tube  241  goes toward the first heat source  230 , cross sectional area thereof is narrow and then wide. The main mixture tube  242  supplies the mixture gas mixed with gas and air while passing through the gas mixture tube  241  to each of the first heat source  230 . 
     The main mixture tube  242  is a circular pipe type to be lengthen horizontally and constantly partial mixed mixture in the gas mixture tube  241  is circulated in the interior space of the main mixture tube  242 . 
     The mixture gas guide tube  243  to allow the first heat source  230  and the main mixture tube  242  to communicate is positioned at the front of the main mixture tube  242 . The mixture gas guide tube  243 , in which one end thereof is communicated with the main mixture tube  242  and the other end is communicated with the first heat source  230 , guides the mixture gas to be moved to the first heat source  230 . 
     Accordingly, the gas and the air introduced into the gas mixture tube  241  is mixed at a certain degree while passing through the gas mixture tube  241  to form the mixture gas, and the mixture gas passing through the gas mixture tube  241  is more mixed while moving to the main mixture tube  242  to be communicated with the interior space of the gas mixture tube  241 . 
     The mixture gas moved to the main mixture tube  242  is more mixed while moving to the mixture gas guide tube  243 , the mixture passing through the mixture gas guide tube  243  ignites each of the first heat source  230  while circulating into the interior space of the first heat source  230 . Then, the mixture gas is burned to heat the interior space of the cavity  210 . 
     Likewise, the first heat source  230  is back and forth at length mounted in the top surface of the cavity  210  to heat the interior space of the cavity  210 . One of the first heat sources  230  is positioned at the center of the top positioned at upper end portion of the cavity  210  and each different first heat source  230  is positioned at both side. The first heat source  230  is positioned to be farthest spaced from the bottom of the cavity  210  than the first heat sources  230  positioned respectively at both sides. 
     At this time, the first heat sources  230  is mounted so that the portion to be burned while igniting gas faces the interior space of the cavity  210  and the interior space of the cavity  210  is heated by the burning heat. 
     A second heat source  250  is disposed at the bottom of the cavity  210  to heat into the interior space of the cavity  210 , and a separation plate  260  is disposed at the interior space of the cavity  210  to spatially partition the cavity  210  into top space and bottom space. 
     Accordingly, the interior space of the cavity  210  is partitioned into the top space and the bottom space by the separation plate  260 , and each discharge port  270  is formed in the back side of the top space and the bottom space partitioned by the separation plate  260  to move discharge gas to be generated when cooking the food in the interior space of the cavity  210  to the exterior space of the cavity  210 . 
     It is also possible that the discharge port  270  is formed to communicate with a main discharge duct  280  positioned at the back of the cavity  210 . The main discharge duct  280  discharges the discharge gas to be generated at the cooktop portion  100 , the oven portion  200  and the drawer portion  300  into the exterior space. The discharge gas is guided by the main discharge duct  280  to be discharged into the exterior space by communicating the main discharge duct  280  and the discharge port  270  with each other. 
     In addition, in the first heat sources  230 , each distance between the first heat source  230  positioned at the top surface center of the cavity  210  and the first heat source  230  positioned at the both sides have the same distance, and the first heat sources  230  are positioned side by side horizontally when viewed from the front. 
     Meanwhile, if the interior space of the cavity  210  is partitioned into the top space and the bottom space by the separation plate  260 , the front cross sections of the top space have shapes different from each other. 
     That is, the top surface of the cavity  210  having the curvature is formed to be rounded. Therefore, the top space formed by the separation plate  260  is formed by the front cross section in which the top thereof is rounded and the bottom space is formed by the front cross section of the rectangle. 
     Further, the top surface of the cavity  210  having the curvature is formed to be rounded, and therefore, when extending heating direction of each of the first source  230  mounted along with the top with imaginary extension lines, each of extension lines is crossed each other at any branch. 
     In detail, the heating directions of the first heat source  230  mounted in the top surface center of the cavity  210  face directly under the direction regardless of the curvature of the top of the cavity  210 , and the heating directions of the first heat source  230  mounted in the top left part when viewed in the drawing face downward toward the right direction. 
     Further, the heating directions of the first heat source  230  mounted in the top surface right part of the cavity  210  when viewed in the drawing face downward toward the left direction. 
     Accordingly, when drawing the heat directions of each of the first heat source  230  by the imaginary extension lines, the extension lines cross each other at any branch. 
     Therefore, the food placed in the center of the interior space of the cavity  210  is concentratedly heated, thereby reducing cooking time by concentrated heating. 
     Hereinafter, acting of the cooking appliance according to an embodiment of the disclosure configured as above will be described. 
     If the user cooks the food by using the oven portion  200 , the operation portion  150  disposed in the controller  140  is operated to supply the gas to the first heat source  230  mounted in the top surface of the cavity  210  and then, the oven portion  200  is ignited. At this time, if the user supplies the gas to the first heat source  230 , the gas is introduced into the gas mixture tube  241 . The introduced gas and air is mixed at a certain degree to form the mixture gas while passing through the gas mixture tube  241 . 
     The mixture gas passing through the gas mixture tube  241  is moved into the main mixture tube  242 , and the mixture gas moved into the main mixture tube  242  is guided by the mixture gas guide tube  243 , is introduced into the first heat source  230 , and is burned. 
     The first heat source  230  generates the burning heat and radiant heat by the first heat source  230 , and the interior space of the cavity  210  is heated by the burning heat and radiant heat to cook the food. 
     At this time, the first heat source  230  is mounted along with the top surface of the cavity  210  having the curvature in which the center thereof is rounded upward, and therefore, the burning heat and the radiant heat face toward the center of the interior space of the cavity  210 . So, more heat is transferred to the center of the interior space of the cavity  210  to reduce the cooking time of the food placed in the center of the interior space of the cavity  210 . 
     In the cooking appliance according to the disclosure configured as above, the food placed in the center of the cavity may be concentratedly heated, thereby reducing cooking time of the food. 
     Further, the top surface of the cavity is formed by the shape having the curvature, and therefore, there is an effect that the interior space of the cavity is wide. There is an effect that high-capacity food cooking is to be able due to widening of the interior space. 
     There is an effect that the various food may be cooked by allowing high-capacity food having large volume to cook and various requirements of the user may be satisfied. 
     Further, there is an effect that ease of use for the cooking appliance is maximized by allowing various food to cook. 
     In the cooking appliance according to the disclosure configured as above, the food placed in the center of the cavity may be concentratedly heated, thereby reducing cooking time of the food. 
     Further, the top surface of the cavity is formed by the shape having the curvature, and therefore, there is an effect that the interior space of the cavity is wide. There is an effect that high-capacity food cooking is to be able due to widening of the interior space. 
     These effects will be available enough for production industry and distribution industry producing and selling the cooking appliance.