Patent Application
20080257166
This invention generally relates to cooking apparatuses. More specifically, this invention relates to a modular cooking apparatus that includes an interchangeable serve-safe cooking pan.
Traditional cooking appliances have a full housing to house a cooking vessel sitting on a heater that is installed inside the housing. Examples of such appliances include deep fryers, hot pots, slow cookers, rice cookers, etc. Consumers have to buy different cooking appliances for various applications. The problem is that consumers have limited kitchen space for these appliances in their home. The high cost associated with buying these appliances is another issue. Therefore, there is a need for kitchen appliance consolidation, such that consumers do not have to buy many appliances for their cooking needs. Various appliances can share one universal or common base and consumers simply buy different cooking vessels for specific uses. Base sharing of cooking appliances will save kitchen space and buying cost for consumers. Varying the depth or the upper diameter of a cooking pan may result in a new appliance for a different use. Such accessories include slow cooking pans, hot pots, fondue pots, kitchen kettles, deep-frying pans, skillet pans, woks, grill pans, etc. While different pans are used, the universal base remains the same.
Consumers also desire a cooking pan that is serve-safe, that's, a cooking pan that can directly sit on a dinning table without the risk of overheating the same. Serve-safe cooking pan wilt save consumers' effort in unloading food after cooking and reduce the use of tableware for serving food, resulting in less tableware for cleaning after meals.
Therefore, it remains desirable to provide a modular cooking apparatus that is innovative in design, such that it has a modular cooking pan that can fit onto a universal or common base and that is serve-safe, that's, a cooking pan that can be used as tableware for serving food after being used for cooking.
Accordingly, the present invention is a modular cooking apparatus. This modular cooking apparatus comprises a container having an open top and a sidewall for holding and cooking food, a lid for closing the open top of the container, a heating tube fixedly installed on the bottom of the container for heating food, a universal base disposed underneath the container for supporting the container, an adapting member fixedly engaged with the tower portion of the container and extended downward to a predetermined distance for adapting the container to removably stand on the universal base, and a thermostat installed on the universal base and adapted to detect and control the temperature of the bottom of the container. As the container is installed in position on the universal base, the heating tube is operationally connected with an electrical port on the universal base for supplying electrical power to the heating tube.
Accordingly, the followings are some of the objects, features, and advantages of the present invention.
It is an object of the present invention to provide a modular cooking apparatus that allows a use to change the cooking pan for various cooking applications.
It is another object of the present invention to provide a modular cooking apparatus that has a serve-safe cooking pan.
It is a feature of the present invention that this modular cooking apparatus includes an adapting member for supporting a container. The upper end of the adapting member is fixedly engaged with the periphery of the bottom portion of the container and the lower end is extended downward to a predetermined distance for adapting the container to stand on a universal base for use of cooking or on a horizontal surface for use of serving food.
It is another feature of the present invention that the container includes an upper portion made from a non-metal material, preferably, transparent, such that a user can consume food directly from the container, which acts as a serving bowl, and a lower portion made from a metal material of high thermal conductivity, such that a heater can be attached thereon for heating food.
It is a further more feature of the present invention that the heating tube is fixedly installed on the bottom of the container. By directly installing the heating tube on the bottom of the container heating efficiency is significantly enhanced and the cost for manufacturing is significantly reduced.
It is an advantage of the present invention that various cooking pans share one common base, such that consumers do not have to buy many appliances for their cooking needs. Consumers buy only one universal base and multiple cooking pan accessories for various applications.
it is another advantage of the present invention that a user can use the cooking pan accessory as a pan for cooking food, as tableware for serving food, or even as a serving bowl for direct food consumption.
Further more features and advantages of the present invention will be readily appreciated, as the same becomes better understood after reading the subsequent description when considered in connection with the non-limiting accompanying drawings.
Reference is made to
A container 102, having an open top and a sidewall, is provided for holding and cooking food. The sidewall of container 102 is slightly tapered with a larger diameter on the top and a smaller diameter on the bottom. Container 102 includes an upper portion 102a, which is made from a non-metal material, and a lower portion 102b, which is made from a metal material of high thermal conductivity. Upper portion 102a and lower portion 102b are fixedly and sealingly engaged with each other using a super glue of high heat resistance. Other manufacturing processes are readily applicable for this application, as known to those skilled in the art. The separation line or interface is disposed at a predetermined distance away from a heating element on the bottom of container 102, such that the separation interface and upper portion 102a are not overheated with heat transferred from lower portion 102b. Upper portion 102a is preferably made from a transparent material, such that a use can see through for observation of cooking processes. Lower portion 102b is preferably coated with a non-stick material for ease of cleaning after use.
A lid 104 is provided for closing the open top of container 102. Lid 104 is, preferably, made from a transparent material.
A grasp handle 106 and a lift handle 108 are fixedly installed on the upper portion of the sidewall of container 102 for use of handling container 102. Handle 106 can be either generally straight or curved, like a handle for a pitcher, based on specific design or application requirements, as known to those skilled in the art.
An adapting member 110 having a generally tapered hollow cylindrical configuration, is provided for supporting container 102. The upper end of member 110 is fixedly engaged with the periphery of the bottom portion of container 102 and the lower end is extended downward to a predetermined distance, such that container 102 is adapted to stand on a universal base 112 for cooking purposes, or on a horizontal countertop or a dinning table for serving food. Member 110 is, preferably, made from a non-metal material of low thermal conductivity, such that container 102 can directly stand on a dinning table without the risk of overheating the same. Since the upper end of member 110 is engaged with the bottom portion of container 102, the material for member 110 should be of high heat resistance. However, other materials are readily applicable, such as metal materials, as known to those skilled in the art and suggested by this invention disclosure. Member 110 is provided also for enclosing the space underneath the bottom of container 102 into a protected space for safety consideration. A window or slot, designated as 114, may be opened on member 110 for venting heated air to reduce the heating load of member 110 and the neighboring components.
An electrical heating tube 116, having a generally circular configuration, is provided for heating food disposed inside container 102. Heating tube 116 is fixedly installed on the outside surface of the bottom of container 102, inserted into a groove formed on the bottom, and disposed close to the periphery of the bottom with a predetermined distance. The two electrical terminals of heating tube 116 are extended downward to a predetermined distance and are adapted to removably engage with an electrical power supply, as container 102 is installed in position on base 112. There are significant advantages of installing heating tube 116 directly on the bottom of container 102. These advantages include saving a significant amount of material for building a full heater that has a thermal diffusion plate, resulting in space and cost saving, higher heat transfer efficiency, etc. Other heating mechanisms are readily applicable, such as induction heating, as known to those skilled in the art and suggested by this invention disclosure.
A thermo plate 120, made from a metal material of high thermal conductivity, is fixedly installed on the bottom of container 102, at a location substantially close to heating tube 116, for removably engaging a thermostat 122. Thermostat 122 is installed on base 112 and removably engaged with thermo plate 120 for detecting the temperature of the bottom of container 102, as container 102 is installed in position on base 112. Such temperature is used to control the electrical power to heating tube 116. The upper end of thermostat 122 protrudes upward above the upper surface of base 112 with pre-loading, e.g., biased via a spring member 122a. Thermostat 122 can be a digital sensor, such as a NTC or PTC, or an adjustable thermostat, or simply a temperature switch, as known to those skilled in the art and suggested by this invention disclosure.
Container 102 is adapted to stand on base 112 to be used as a pan for cooking food. As container 102 is properly installed in position on base 112, thermostat 122 is engaged with thermo plate 120, or directly with the bottom of container 102, and the electrical terminals of heating tube 116 are connected with an electrical port 112c that is installed on base 112.
Detector 128 is disposed at the bottom of base guide 112b. The upper end of detector 128 protrudes a predetermined distance above the bottom of guide 112b, such that when container 102 is installed in position on base 112, the tower end of position guide 110b would press with a force on detector 128 to confirm that container 102 is well positioned. Detector 128 is a switch device, which deactivates heating tube 116 if container 102 is not property installed on base 112.
Container 102 can have various designs, varying the depth, or the upper diameter, or both, to be adapted for various applications, such as designed as slow cooking pans, fondue pots, hot pots, kitchen kettles, deep-frying pans, skillet pans, woks, grill pans, etc. While different pans are used, base 112 remains the same.
Accordingly, readers will see that this cooking apparatus of the present invention includes a modular cooking pan that can be adapted to stand on a universal base for cooking purposes and that can be used as a pan for cooking food, as tableware for serving food, or even as a serving bowl for direct food consumption by a user. The container is removable from the universal base, such that the cooking pan is convenient for cleaning after use and dishwasher safe. Many cooking pans of various applications share one common base, such that consumers do not have to buy many appliances for their cooking needs, and instead, they are able to buy various cooking pans, as accessories, which are much less expensive than full appliances.
The present invention has been described in an illustrative manner. It is to be understood that the terminology, which has been used, is intended to be in the nature of words of description rather than of limitation.
Although this invention has been described in its preferred forms and structures with a certain degree of particularity, these should not be construed as limiting the scope of the invention but as merely providing illustrations of some of the presently preferred embodiments of this invention.
Thus it is understood that the present disclosure of the preferred forms can be changed in the details of construction and in the combination and arrangement of parts without departing from the spirit and the scope of the invention as hereinafter claimed.
