| Control system for the operation of a kitchen oven -> Monitor Keywords |
|
|
  Control system for the operation of a kitchen ovenUSPTO Application #: 20070117058Title: Control system for the operation of a kitchen oven Abstract: A control system for the operation of a kitchen oven comprising a cooking chamber (11) lodging a heat source (20) and a temperature sensor (30); and a thermostatic control device (40) for controlling the energy supplied to the heat source (20) as a function of a selected operating temperature and of the temperature sensed by the temperature sensor (30). The control system further comprises a decoder (50) for producing a digital signal for each temperature of a scale (45) preset in the thermostatic control device (40); and an electronic control module (M) comprising a processing unit (60) and an audible alarm (80). The processing unit (60) receives from the decoder (50) and processes a digital signal indicative of the activation of the oven and of the operating temperature selected in the thermostatic control device (40), in order to activate the audible alarm (80) when a pre-established initial heating time has elapsed, so that the cooking chamber (11) reaches the selected operating temperature. (end of abstract) Agent: Darby & Darby P.C. - New York, NY, US Inventors: Luciano Leite Furuti, Paulo Manoel Razaboni, Rose de Cassia Rogerio, Massimo Banzato USPTO Applicaton #: 20070117058 - Class: 431281000 (USPTO) Related Patent Categories: Combustion, Separately Supplied Or Controlled, Physically Related Flame Holders, E.g., Diverse Fuels, Pilot And Main, Etc., Correlated Controls The Patent Description & Claims data below is from USPTO Patent Application 20070117058. Brief Patent Description - Full Patent Description - Patent Application Claims
FIELD OF THE INVENTION [0001] The present invention refers to a system developed to allow the electronic control of the operating times of a kitchen oven, as a function of the cooking temperature conditions pre-selected by the user. The present control system can be applied to gas or electric ovens, mounted in single cabinets or which are combined with kitchen stoves comprising a cook top provided with one or more burners or heaters. PRIOR ART [0002] The instructions provided with the packages of most food products of fast preparation, such as the frozen food products, recommend the consumer to preheat the oven before he/she introduces the food product therein to start cooking. Preheating the kitchen oven is thus an important step in the cooking process. [0003] In the known kitchen ovens, the consumer has to use a clock or chronometer, which is provided separate from or incorporated in the cabinet of the oven, in order to be informed by the visual/audible alarm of the clock that the oven is already in the desired operating temperature, which is generally preset by the user in a thermostatic valve or in an also thermostatic energization control. [0004] Even in the case the user is informed about the heating time of the oven for each selected temperature level, he/she has to analyze a table indicative of the operating temperature and the preheating time, in order to have the definition of the time to be adjusted in the clock or chronometer. This procedure is laborious and requires certain cares with which the user is not familiar, i.e., different from those procedures directly related to the preparation of the food product. The preheating time has to be calculated and adjusted in an auxiliary device (clock). [0005] There are also known the oven operation control systems which use one or more temperature sensors associated with electronic commands, which process the signals received from the sensors, instructing the gas or electric supply adjusting means, as well as visual and audible alarm means associated with timers, to operate as a function of the temperature and time conditions adjusted by the user. [0006] This system with electronic sensors allows a precise operational control of the oven to be obtained, without requiring additional cares or procedures from the user, except the simple actuation of the command button of the oven for the position indicative of the desired operating temperature. However, these systems present a high cost, which substantially increases the final cost of the oven or stove associated therewith. [0007] There are well known from the art the kitchen ovens comprising a cooking chamber, inside which are mounted at least one heat source in the form of a gas burner or of an electric resistance, and a temperature sensor; and a thermostatic control device, which controls the energization of the heat source, in the form of a thermostatic valve for controlling the gas flow, or in the form of a thermostat, and which is operatively associated with a scale of the oven operating temperatures and with the temperature sensor, in order to adjust the energy supplied to the heat source, as a function of the temperature set in said device upon the activation of the oven and of the temperature sensed by the temperature sensor inside the cooking chamber. This known construction allows the user to control the operating temperature of the oven, upon completion of the preheating phase. [0008] Nevertheless, there still persists the difficulty in providing, at a low cost, a control system which is able to determine and automatically inform the user about the end of the preheating phase, with the cooking chamber being in the desired operating temperature. OBJECTS OF THE INVENTION [0009] As a function of the limitations related to operation and cost presented by the known control systems, it is an object of the present invention to provide a system of the type exemplified above, which is able to supply the user, by means of a relatively simple construction, with an automatic visual and audible indication that the cooking chamber of the oven has reached the operating temperature which has been set upon the activation of the oven. [0010] It is a more specific object of the present invention to provide a control system such as mentioned above, which has its operation automatically started when the user switches on the oven. [0011] It is a further object of the present invention to provide a control system as defined above, which can be operatively associated with other functions, such as time control and operational safety of the oven, as well as other heat sources of a stove associated therewith. DISCLOSURE OF THE INVENTION [0012] In order to attain the above-mentioned objects, the invention is applied to a control system for the operation of a kitchen oven as defined above, which comprises, besides the usually known control elements, a decoder which is operatively associated with the thermostatic control device in order to produce a digital signal for each temperature preset in the thermostatic control device; and an electronic control module comprising a processing unit, an initial heating timer, a digital display and an audible alarm, operatively associated with each other. [0013] The processing unit is connected to the decoder so as to receive therefrom and to process a digital signal indicative of the activation of the oven and of the selected operating temperature, in order to activate the audible alarm when a pre-established initial heating time has elapsed, so that the cooking chamber can reach the selected operating temperature. [0014] The basic construction proposed herein allows the user to be informed about the moment in which the oven is in a pre-selected temperature condition, without requiring any additional operation for activating the oven, such as moving the thermostatic control device toward the open position at the desired temperature. BRIEF DESCRIPTION OF THE DRAWINGS [0015] The invention will be described below, with reference to the enclosed drawing, given by way of example of a possible embodiment of the present system and in which: [0016] FIG. 1 is a schematic diagram of the present control system, applied to a kitchen oven associated with a cook top, and in which the heat sources of both the oven and the cook top are defined by gas burners. DESCRIPTION OF THE INVENTION [0017] As mentioned above and illustrated in the single figure of the enclosed drawing, the present control system is applied to a kitchen oven 10 of the type which comprises a cooking chamber 11, within which a heat source 20 and a temperature sensor 30 are lodged. The oven 20 can be defined in a single cabinet, or mounted in a cabinet, on which upper portion is defined a stove cook top, comprising one or more heat sources 20 for cooking. [0018] The control system of the invention is applied to ovens presenting gas or electric burners and whose operation is determined by a thermostatic control device 40, external to the cooking chamber and which is operatively associated with an energy source 1, with the heat source 20 of the cooking chamber 11, and with the temperature sensor 30, in order to control the energy supplied to the heat source 20 as a function of the operating temperature to which it has been selectively adjusted and of the temperature detected by the temperature sensor 30. Continue reading... Full patent description for Control system for the operation of a kitchen oven Brief Patent Description - Full Patent Description - Patent Application Claims Click on the above for other options relating to this Control system for the operation of a kitchen oven patent application. ###  How KEYWORD MONITOR works... a FREE service from FreshPatents1. Sign up (takes 30 seconds). 2. Fill in the keywords to be monitored. 3. Each week you receive an email with patent applications related to your keywords. Start now! - Receive info on patent apps like Control system for the operation of a kitchen oven or other areas of interest. ### Previous Patent Application: Combustion head for a gas burner Next Patent Application: Controlled mechanical heating - wax skin therapy and aromatherapy Industry Class: Combustion ### FreshPatents.com Support Thank you for viewing the Control system for the operation of a kitchen oven patent info. IP-related news and info Results in 1.9849 seconds Other interesting Feshpatents.com categories: Computers: Graphics , I/O , Processors , Dyn. Storage , Static Storage , Printers |
||
