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Electronically-frequency-controlled voltage adjustment device and method for retaining freshness of foods by using the sameRelated Patent Categories: Refrigeration, Automatic Control, Refrigeration Producer, Compressor Or Its Drive ControlledElectronically-frequency-controlled voltage adjustment device and method for retaining freshness of foods by using the same description/claimsThe Patent Description & Claims data below is from USPTO Patent Application 20050279112, Electronically-frequency-controlled voltage adjustment device and method for retaining freshness of foods by using the same. Brief Patent Description - Full Patent Description - Patent Application Claims
FIELD OF THE INVENTION [0001] The present invention relates to voltage adjustment devices, and in particular to an electronically-frequency-controlled voltage adjustment device which is used to retain the freshness of foods in unfreezing or frying. The present invention also relates to a method for retaining the freshness of foods by using the same. BACKGROUND OF THE INVENTION [0002] Currently, technologies for retaining freshness of foods and unfreezing foods use electrostatic technology. In that, transformers are used to boost the voltages and then resistance at output end is limited. In unfreezing process, voltages are applied to the foods. However there is a big trouble in the unfreezing process, that is a very long time period is necessary, for example, 8 to 10 hours are necessary to unfreeze foods from -6.degree. C. to -2.degree. C. Not only time is consumed, but also power is wasted. Thereby the quality of the food is deteriorated in the unfreezing process. [0003] In U.S. Pat. No. 5,034,236A, a method for unfreezing food is provided, in that high voltage negative electrons are applied to foods. Then the foods can be unfroze at the temperature ranger of -3.degree. C. to 3.degree. C. However it also needs time period of 8 to 10 hours from publication documents or even a longer time period is necessary. Furthermore, the voltage in that method is unchanged, it is a fixed value. SUMMARY OF THE INVENTION [0004] Accordingly, the primary object of the present invention is to provide an electronically-frequency-controlled voltage adjustment device which is used to retain the freshness of foods in unfreezing or fried. The present invention also relates to a method for retaining the freshness of foods by using the same. [0005] To achieve above objects, the present invention provides An electronically-frequency-controlled voltage adjustment device comprises a power supply for providing voltages to an object; a temperature sensor for sensing temperatures of the object; a temperature control unit receiving temperature signals from the temperature sensor and outputting temperature variation signals; a voltage adjustment unit for adjusting output voltages of the power supply based on the temperature variation signals from the temperature control unit; and a frequency generator for generating oscillating current intermittently. [0006] Furthermore, a method for unfreezing and retaining the freshness of foods is also provided. The method comprises the steps of: supply voltages by using a power supply; placing electrodes in an isolating space; providing the voltages to a food to be process through the electrodes from the power supply; sensing temperatures of the food by using a temperature sensor; receiving temperature signals from the temperature sensor and outputting temperature variation signals by using a temperature control unit; and adjusting the supply voltages based on the signals from the temperature control unit by using a voltage adjustment unit. [0007] The various objects and advantages of the present invention will be more readily understood from the following detailed description when read in conjunction with the appended drawing. BRIEF DESCRIPTION OF THE DRAWINGS [0008] FIG. 1 shows the electronically-frequency-controlled voltage adjustment device of the present invention. [0009] FIG. 1-1 shows a schematic view about the principle of the present invention. [0010] FIG. 2 shows the box of the electronically-frequency-controlled voltage adjustment device of the present invention. [0011] FIG. 3 shows the bottom plate of the present invention. [0012] FIG. 4 shows a block diagram of the present invention. [0013] FIG. 5 shows that the electronically-frequency-controlled voltage adjustment device of the present invention is applied to a refrigerator. [0014] FIG. 6 shows that the electronically-frequency-controlled voltage adjustment device of the present invention is applied to a cake freezer. [0015] FIG. 7 shows that the electronically-frequency-controlled voltage adjustment device of the present invention is applied to a seafood freeze. [0016] FIG. 8 shows that the electronically-frequency-controlled voltage adjustment device of the present invention is applied to a juicy machine. [0017] FIG. 9 shows that the electronically-frequency-controlled voltage adjustment device of the present invention is applied to an unfreezing box. [0018] FIG. 10 shows that the electronically-frequency-controlled voltage adjustment device of the present invention is applied to an oven. [0019] FIG. 11 shows that the electronically-frequency-controlled voltage adjustment device of the present invention is applied to an open type refrigerator. [0020] FIG. 12 shows that the electronically-frequency-controlled voltage adjustment device of the present invention is applied to a freezer. Continue reading about Electronically-frequency-controlled voltage adjustment device and method for retaining freshness of foods by using the same... Full patent description for Electronically-frequency-controlled voltage adjustment device and method for retaining freshness of foods by using the same Brief Patent Description - Full Patent Description - Patent Application Claims Click on the above for other options relating to this Electronically-frequency-controlled voltage adjustment device and method for retaining freshness of foods by using the same 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. 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