Apparatus to control gas burner for stir-fry cooking
An apparatus and system for controlling gas burner, either by knee or by hand, to achieve a desirable timing and volume of heat during the process of Chinese stir-fry cooking.
1. Field of the Invention
The present invention relates generally to an apparatus that features a mechanism for controlling gas burner, either by knee or by hand, to achieve a desirable timing and volume of heat during the process of Chinese stir-fry cooking.
2. Description of the Prior Art
Gas valve switch structure are widely used in homes and restaurants to provide control over gas appliances. Commonly, the valves to open and allow gas to flow to the gas burners are controlled manually by hand.
However, the conventional gas valve switch is not convenient for Chinese cooking, particularly, for making stir-fry dishes in kitchens of Chinese restaurants. Chinese stir-fry cooking is a unique way of cooking that requires the dish ingredients to be placed in hot oil over intense heat with rapid tossing and short cooking time. Generally, stir-fry cooking is a “two hands” work performed by a Chinese chef, who uses one hand to toss a wok, while using another hand to hold a frying accessory such as a spoon to assist. It is evident that, during stir-fry cooking, it is inconvenient and difficult for a chef to switch on/off the gas burner every time when a dish is prepared, especially during his busy time. However, a chef has to do so since it is not a good idea to heat an empty wok on such intensive heat.
In addition, the traditional gas valve switch structure used in Chinese stir-fry cooking gas burner has the following disadvantages: due to the inconvenience in turning off the gas immediately after stir-fry cooking, the resulting gas burning and exposed flame with extremely high temperature and heavy smokes cause a unpleasant and unsafe working environment. It is also the major factor for grease accumulation on hood and resulting in the hood damages sometimes.
Some efforts have been made for automatic stir-fry machines. Examples can be found in the prior arts, such as U.S. Pat. Nos. 6,647,864 and 4,503,502. U.S. Pat. No. 6,647,864 uses the gas burner control and safety system, which include automatic gas valve unit, automatic gas shut-off device, and cooking chamber temperature sensor units. However, these findings and derived systems are often too complicated to be used in the restaurants for practical stir-fry cooking uses and the cost for building an automatic stir-fry machine is usually high.
To address the above problems and drawbacks, the current invention introduces an apparatus, operated either automatically through magnets or manually by hand, to replace the hand-operating-only gas valve switch currently used in the commercial products, to achieve the required gas control for burners used in stir-fry cooking.
SUMMARY OF INVENTIONThe primary objective of the present invention is to provide an apparatus and a mechanism for controlling gas burner used for stir-fry cooking.
It is yet another objective of the present invention to provide an apparatus for controlling the gas burner, which could be operated either by knee or by hand.
It is a further objective of the present invention to provide an apparatus for controlling the gas burner, which can be adjustably mounted for operator's convenience and comfort.
To achieve the above objectives, the present invention discloses an apparatus, comprising a magnetic band, a sensor board, a relay, an electromagnetic valve, a hand control handle and a circuit box. Using this apparatus, one can control gas supply either manually or automatically through a magnetic object.
A preferred sample embodiment is disclosed. For its simplicity in structure and ease in fabrication, the invented apparatus for controlling gas burner used for stir-fry cooking provides substantial benefits over current commercial gas burner control systems which are operated only by hands. The invented apparatus is potentially useful at restaurants, especially Chinese restaurants, where stir-fry dishes are served frequently.
BRIEF DESCRIPTION OF DRAWINGSThe detailed description, not intended to limit the present invention solely thereto, will best be understood in conjunction with the accompanying drawings, where similar elements will be represented by the same reference symbol, in which:
Although specific embodiments of the present invention will now be described with reference to the drawings, it should be understood that such embodiments are by way of example only and merely illustrative of but a small number of the many possible specific embodiments which can represent applications of the principles of the present invention. Various changes and modifications obvious to one skilled in the art to which the present invention pertains are deemed to be within the spirit, scope and contemplation of the present invention as further defined in the appended claims.
Described in general, the present invention is an gas control apparatus, which can be operated either manually or automatically through magnets. When a person wearing a magnetic band stands close to the sensor board, the electromagnetic valve will open to allow gas pass through to a gas burner. When the person moves the magnetic band away from the sensor board, the electromagnetic valve will shut down to block gas supply.
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In the preferred embodiment, the valve box 21 is sealed to prevent any gas leaky. The electric circuit of the magnetic control unit is also placed in a sealed box to prevent any potential sparks created by the electric circuit from leaky gas.
Of course the present invention is not intended to be restricted to any particular form or arrangement, or any specific embodiment, or any specific use, disclosed herein, since the same may be modified in various particulars or relations without departing from the spirit or scope of the claimed invention hereinabove shown and described of which the apparatus shown is intended only for illustration and disclosure of an operative embodiment and not to show all of the various forms or modifications in which this invention might be embodied or operated.
The present invention has been described in considerable detail in order to comply with the patent laws by providing full public disclosure of at least one of its forms. However, such detailed description is not intended in any way to limit the broad features or principles of the present invention, or the scope of the patent to be granted. Therefore, the invention is to be limited only by the scope of the appended claims.
Claims
1. An apparatus, for controlling gas in a gas burner used for stir-fry cooking to achieve a desirable timing and volume of heat, is operated either manually by hand or automatically through magnets.
2. An apparatus in claim 1, comprising:
- a magnetic control unit, which comprises at least a magnetic object, a sensor board, a relay and an electromagnetic valve;
- a hand control unit, which comprises at least a handle and a hand control valve;
- a valve box, which harbors the said electromagnetic valve, the said hand control valve and a gas passing channel.
3. The said magnetic object in claim 2, comprises at least one magnet.
4. The said sensor board in claim 2, comprises at least one magnetic detecting device.
5. The said magnetic detecting device in claim 4, comprises at least one reed switch.
6. A method to use the said apparatus in claim 1 in stir-fry cooking, comprises:
- turning on the device power;
- a person wearing the said magnetic band on his knee;
- placing the said magnetic band close to the said sensor board, which trigger the said reed switch and turn on the said relay, as a result, the said electromagnetic valve is open to allow gas to flow to a gas burner;
- moving the said magnetic band away from the said sensor board, which release the said reed switch and turn off the said relay, as a result the said electromagnetic valve is close to block gas flowing to a gas burner;
- alternatively turning the said handle to open/close the said hand control valve to allow/block gas to flow to a gas burner, respectively.
7. A stir-fry cooking system, comprising at least one apparatus in claim 1.
Type: Application
Filed: Apr 13, 2004
Publication Date: Oct 13, 2005
Inventor: Hengsheng Li (Ozone Park, NY)
Application Number: 10/709,094