48results about How to "Good thawing effect" patented technology

The invention discloses a food defrosting method for a microwave oven, wherein a sensor probe of the microwave oven measures the temperature of a food by using a plurality of sampling points. The method comprises the following steps of: initializing a temperature sensor and a controller, measuring the temperature from the plurality of sampling points by using the temperature sensor, obtaining thehighest temperature and the lowest temperature by contrast, comparing the highest temperature and the lowest temperature with a set upper limit temperature and a set lower limit temperature, controlling the running of the microwave oven according to the comparison result, and if the measured highest temperature is lower than the upper limit temperature and the measured lowest temperature is also lower than the lower limit temperature, continuing defrosting the food until the defrosting is stopped by regulating the power level of the microwave oven according to the lowest temperature to re-measure the temperate from the plurality of sampling points, so that the object can be defrosted with the optimum effect.

The invention discloses a microwave oven food thawing control method and a microwave oven. The microwave oven comprises a rotatable heating antenna. The food thawing control method comprises the following steps: S1, detecting the temperatures of multiple temperature points on to-be-thawed food in the microwave oven; S2, determining the heating angle of the heating antenna according to the temperatures of the multiple temperature points; S3, controlling the rotating of the heating antenna according to the heating angle. According to the microwave oven food thawing control method, the to-be-thawed food is thawed according to the temperatures of the multiple temperature points on the to-be-thawed food, such as meat, so that the thawing effect is great.

The invention provides a solar-heat pump combined food air thawing system and a solar-heat pump combined food air thawing method and belongs to the technical field of food air thawing. The system comprises an air circulation subsystem, a solar hot water circulation heat exchange subsystem and a refrigerating medium circulating subsystem. The air circulation subsystem comprises a food thawing chamber (1), a fan (12), an air electric heater (11), an air volume regulating valve (10), an atmospheric condenser (6), an air volume regulating valve (16) and an evaporator (14); the solar hot water circulation heat exchange subsystem comprises a solar heat collector (2), a water flow regulating valve (3), a water-water heat exchanger (13) and a water supply pump (14); and the refrigerating medium circulating subsystem comprises a refrigerating fluid container (8), the atmospheric condenser (6), a refrigerating expansion valve (5), the evaporator (4) and a refrigerating compressor (7). The system has the advantages of quick thawing, high thawing quality, simple process, obvious energy conservation and the like.

The present invention discloses a thawing device for food detection and a thawing method, and aims to solve a problem that the thawing device for the food detection is slow in thawing rate of food, poor in thawing effects and inconvenient in the food detection. The thawing device comprises an ice breaking groove, a material shaking plate and a thawing water groove; the lower end of the ice breaking groove is hinged with a material discharge cover that can be opened downward; a pop-up ice breaking mechanism is arranged above the ice breaking groove; a plurality of screen holes are densely arranged in the material shaking plate; the material shaking plate is inclinedly arranged under the material discharge cover; a shaking mechanism for driving shaking of the shaking plate is arranged underthe material shaking plate; a position of the thawing water groove is provided with a water-bath thawing conveyor belt, a hot-air thawing conveyor belt and a hot-air blower; the near middle part of the water-bath thawing conveyor belt is arranged in the thawing water groove; the bottom surface of the thawing water groove is provided with a temperature sensor and a plurality of one-way blow heads;and the upper side of the hot-air thawing conveyor belt is successively provided with a first-stage hot-air thawing device, a second-stage hot-air thawing device, a third-stage hot-air thawing deviceand a material taking mechanism.

This disclosure discloses a heat pump air-conditioning system and an electric vehicle. The system includes a HVAC assembly, a compressor, and an outdoor heat exchanger. The HVAC assembly includes an indoor condenser, an indoor evaporator, and a damper mechanism. The damper mechanism selectively opens ventilation channels of the indoor condenser and / or the indoor evaporator. An outlet of the compressor communicates to an inlet of the indoor condenser. An outlet of the indoor condenser communicates to an inlet of the outdoor heat exchanger selectively through a first throttle branch or a first through-flow branch. An outlet of the outdoor heat exchanger communicates to an inlet of the indoor evaporator selectively through a second throttle branch or a second through-flow branch. Both an outlet of the indoor evaporator, the outlet of the indoor condenser, and the outlet of the outdoor heat exchanger communicate to an inlet of the compressor.

The invention discloses thawing equipment for food detection and a thawing method, and aims at overcoming the defects of the thawing equipment for food detection that the thawing speed is low, the thawing effect is poor, and the food detection is inconvenient. The thawing equipment comprises an ice breaking groove, a material shaking plate and a thawing water groove, wherein the lower end of the ice crushing groove is hinged to a discharging cover capable of being downwards opened; an ejection ice crushing mechanism is arranged above the ice crushing groove; a plurality of sieve holes are densely distributed in the material shaking plate; the material shaking plate is slantwise arranged under the discharging cover; a shaking mechanism for driving the material shaking plate to shake is arranged under the material shaking plate; a hot air blower and a plurality of hot air pipes are arranged above the material shaking plate; the hot air pipes are communicated with the hot air blower; a plurality of air spraying heads are arranged on each hot air pipe at intervals; a water bath thawing conveying belt and a hot air thawing conveying belt are arranged in the thawing water groove position; the part, near the middle, of the water bath thawing conveying belt is arranged in the thawing water groove; a hot air thawing device and a material taking mechanism are arranged above the hot air thawing conveying belt; the hot air thawing device blows hot air to the hot air thawing conveying belt.

The invention relates to a frozen food unfreezing method. The method comprises the steps that frozen food is placed into a microwave container, and water with the weight being 0.5-1 time that of the frozen food is added into the container; the microwave container is arranged in a microwave oven for microwave unfreezing. According to the frozen food unfreezing method, various kinds of daily frozen food can be rapidly and evenly unfrozen only by utilizing a common domestic microwave oven instead of a special large microwave unfreezing device, adding water according to a certain ratio for water-bath microwaving and reasonably controlling the capacity ratio of the frozen food container to the microwave oven and the microwave power and time in the microwaving process, the unfreezing efficiency is improved, the original appearance, texture, nutritional quality and flavor of the frozen food can be kept to the greatest degree, low energy consumption, high quality and high efficiency of the unfreezing technology are achieved, and the device is simple, convenient to operate, wide in application range, easy to popularize and high in life practicability.

The invention discloses a refrigerator preservation box, a refrigerator and a food fresh keeping control method, belongs to the technical field of refrigerators and control method thereof, and aims to solve the problems that the existing refrigerator is poor in fresh keeping effect during refrigeration and short in storage cycle during cold storage. The refrigerator preservation box comprises a preservation box body, a heating device in the preservation box body, a cool air adjustment structure arranged at the rear of the preservation box body and a temperature detection element, wherein the cool air adjustment structure is used for enabling foods in the preservation box body to enter and be kept in an excessive cooling state; the temperature detection element is used for detecting temperature in the preservation box body; and the heating device is used for heating the foods in the preservation box body to a preset temperature. The refrigerator disclosed by the invention comprises a chill compartment and the refrigerator preservation box and is excellent in fresh keeping effect and user experience. The invention further provides the food fresh keeping control method based on the refrigerator, and with adoption of the method, the foods are kept fresh within at least one week.

The invention discloses rapid unfreezing equipment based on food processing, and relates to the technical field of food processing equipment. The equipment comprises a cylinder body, shells and supporting legs, the shells are fixedly connected to two sides of the cylinder body, and the supporting legs are fixedly connected to the bottoms of the two shells; and a frame body is fixedly connected tothe bottom of the inner wall of the cylinder body, a motor is fixedly connected to the bottom of the inner wall of the frame body, and a first bevel gear is fixedly connected to one end of the outputshaft of the motor through a coupler. According to the rapid unfreezing equipment based on food processing, the frame body is fixedly connected to the bottom of the inner wall of the cylinder body, the bottom of the inner wall of the frame body is fixedly connected with the motor, when frozen products are unfrozen, the frozen products are heated more evenly, time is saved, the unfreezing effect isbetter, the unfreezing efficiency is improved, and through the fact that the top of a supporting plate is fixedly connected with an air pump, the frozen products are heated more evenly, the heating effect is better, the unfreezing is faster, and the use is convenient.

The invention discloses a microwave oven food thawing control method and a microwave oven. The microwave oven comprises a microwave generator. The food thawing control method comprises the following steps: S1, detecting the temperatures of multiple temperature points on to-be-thawed food in the microwave oven; S2, controlling the starting of the microwave generator, and thawing the to-be-thawed food according to the temperatures of the multiple temperature points on the to-be-thawed food. According to the microwave oven food thawing control method, the to-be-thawed food is thawed according to the temperatures of the multiple temperature points on the to-be-thawed food, so that the thawing effect is great.

The invention belongs to the technical field of radio frequency unfreezing, and discloses a radio frequency unfreezing device. The radio frequency unfreezing device comprises an unfreezing cavity, a housing, a radio frequency source, a radio frequency power amplifier and a radio frequency antenna, wherein the radio frequency source and the radio frequency power amplifier are arranged between the unfreezing cavity and the housing; the radio frequency source is connected with the radio frequency power amplifier, and is used for amplifying the radio frequency power produced by the radio frequencysource to a set power; the radio frequency antenna is arranged on the inner wall of the unfreezing cavity; and the radio frequency antenna is connected with the radio frequency power amplifier, and is used for radiating the radio frequency produced by the radio frequency source to the unfreezing cavity. Through the adoption of the radio frequency unfreezing device provided by the embodiment of the invention, the inner side and the outer side of the food to be unfrozen are smoothly heated, the heating of the food to be unfrozen is guaranteed to be uniform, and the unfreezing effect is improved.

The invention discloses a multifunctional thawing and spin-drying apparatus for food. The multifunctional thawing and spin-drying apparatus comprises a stirring motor and a tank, wherein a sealing device is arranged between the stirring motor and the tank and fixedly connected with the tank; the output shaft of the stirring motor penetrates the sealing device; the sealing device comprises a shell; cylindrical space is formed in the shell; an annular column is arranged in the shell; the outer circle surface and inner circle surface of the annular column are cooperated with each other, and the inner wall of the annular column is arranged to be a conical surface; a sealing ring is arranged in the annular column and is cooperated with the annular column via the conical surface; a spring is arranged between the sealing ring and the inner wall of the shell; and the sealing ring is in seal fit with the output shaft of the stirring motor. The multifunctional thawing and spin-drying apparatus for food can improve work efficiency.

The invention aims at providing a sleeve-fish processing device with an unfreezing function. The sleeve-fish processing device with the unfreezing function is used for solving the technical problems of sleeve-fish processing, and comprises a control system, an unfreezing heat treatment system, a material conveying system and a wire pulling system, wherein the unfreezing heat treatment system, thematerial conveying system and the wire pulling system are electrically connected with the control system. The sleeve-fish processing device has the beneficial effects that the unfreezing heat treatment system can perform unfreezing cooking treatment on the sleeve-fish; the unfreezing effect is good; the material conveying system realizes stepwise conveyance on the sleeve-fish through a first material conveying mechanism and a second material conveying mechanism, so that the uniform flat laying movement transportation on the sleeve-fish can be realized; the wire pulling system can realize the wire pulling treatment on the sleeve-fish, so that the sleeve-fish can be better dried in the air.

The invention discloses a swine frozen semen thawing liquid, a preparation method thereof and a thawing method thereof, and relates to the technical field of swine frozen semen. The swine frozen sementhawing liquid includes glucose, sodium citrate, Tris, citric acid, potassium dihydrogen phosphate and cysteine. The thawing liquid adopted to thaw the swine frozen semen has a good thawing effect, so that the pig semen can maintain good vigor.

The invention relates to the technical field of cell recovery, in particular to a cell culture recovery device, and solves the problems that time is wasted by single operation, and injury accidents may occur if liquid nitrogen is poured into test tubes, the test tubes are easy to break by manual operation in the prior art. The cell culture recovery device comprises a shell, wherein an upper coveris arranged at the top of the shell, a placing tray is arranged inside the shell, lifting mechanisms are arranged between the placing tray and the shell, and a plurality of test tube clamps centrallysymmetrically distributed are arranged on the surface of the placing tray; and supporting legs are arranged at the bottom of the shell, and a driving mechanism is arranged between the supporting legsand the shell. A plurality of test tubes are clamped simultaneously by the test tube clamps, and can be placed into a solution at a time without manual placement, so that time is saved, and personnelsafety is guaranteed.

The invention discloses a method for preparing marinated duck intestines. The method comprises the following steps: unfreezing in hot water, cleaning and sterilizing; trimming and cutting; performingfrying and decontaminating treatment on spices; marinating and decontaminating; selecting and removing impurities; performing vacuum infiltration and inhibiting bacteria; performing staged rapid cooling and antibacterial treatment, modified atmosphere packaging and the like. The method disclosed by the invention breaks the routine, the duck intestines are cleaned and sterilized by adopting hot-water unfreezing under the condition that the water temperature and time are strictly controlled, the unfreezing effect is excellent, microbes in the duck intestines can be killed by 80% or higher, and compared with the traditional process of slowly unfreezing at the temperature of 0-4 DEG C, the method disclosed by the invention has the advantage that the working efficiency is greatly improved.

The invention discloses a water bath vibration type household food defrosting device, which is characterized in that the water bath vibration type household food defrosting device comprises a water bath box. A first screen plate is slidably connected into the water bath box along a vertical direction; a plurality of guide rods are also fixed into the water bath box; the water bath box is rotatablyconnected with a round bar on the lower part of the first screen plate; a cam is fixed onto the round bar and is driven by a servo motor; a push plate also slides in the water bath box along a horizontal direction; a screw rod is also in threaded connection onto the water bath box; one end of the screw rod is rotatably connected onto the push plate; a handle is fixed to one end, far away from thepush plate, of the screw rod; a second screen plate is also fixed to one end, close to the push plate, of the first screen plate; a water outlet hole is formed in a part, close to a box bottom of thewater bath box, of the water bath box; a plug is inserted into the water outlet hole; a resistance heating wire is also arranged on the bottom part of the water bath box. The defrosting device has afavorable defrosting effect.

The invention discloses an antifreezing suction coarse water filter which comprises a casing, a filter disc, a locking buckle, a filter core, an upper cover and a branch pipe. The casing is a container with a bottom, wherein the container is provided with an upper cover. Two flange connecting pipes are arranged on the left side and the right side of a longitudinal inner cavity respectively to be communicated with the inner cavity. The filter disc is horizontally placed at the bottom of the inner cavity of the casing, and the filter core is vertically placed on the filter disc and is in limited connection through the upper cover and the locking buckle jointly to form a filter structure with the filter core serving as the edge. The flange connecting pipes located on the two sides of the filter core are respectively communicated with the inner cavity of the casing, and the branch pipe communicated with the inner cavity is arranged on one side of the left side flange connecting pipe on the upper portion of a casing wall. The branch pipe is externally connected with a valve to be connected with a steam pipeline; when the air temperature is low in winter, the valve is opened to inject steam into the casing, the steam has the effect of heating and ice melting, and a ship water supply system can run normally.

The invention belongs to the technical field of quick-frozen food processing, and particularly relates to a quick-frozen conditioning grilled fish stick and a preparation method thereof. The quick-frozen conditioning grilled fish stick provided by the invention comprises stuffing and wrappers; and the preparation method comprises the following steps: carrying out microwave unfreezing on pork and chicken breast and cleaning, and cutting and mincing the pork; adding starch, ice water, phosphate, white sugar, table salt, aginomoto, black pepper, plant haematochrome and edible flavor and fragrance, and chopping to prepare the stuffing; carrying out vacuum unfreezing on fresh water fish, chicken and pork and cleaning, and cutting and mincing the pork; adding starch, emulsion paste, ice water, phosphate, salt, white sugar, aginomoto, plant haematochrome and edible flavor and fragrance, and chopping to prepare the stuffing and the wrappers; and molding the stuffing and the wrappers, stewing, quickly freezing, and packing to prepare the quick-frozen conditioning grilled fish stick.

The invention discloses a cell freezing device. The cell freezing device is used for freezing biological living cells subpackaged in feed liquor bottles and comprises a shell and a plurality of feed liquor bottle containing baskets, wherein a feeding hole is formed in the surface of the shell, the shell is internally provided with a reaction cavity used for containing the feed liquor bottles and being filled with a cold medium, a motor driving zone is also formed in the shell, and at least one rotary driving motor is arranged in the motor driving zone; the reaction cavity is internally provided with a sample frame used for placing the feed liquor bottles, a plurality of supporting shafts which are arranged in parallel are rotatably fixedly arranged on the sample frame, the supporting shafts and the rotary driving motor are connected by virtue of a rotary transmission mechanism; and a plurality of feed liquor bottle containing baskets sleeve the feed liquor bottles under a working condition, are arranged on the supporting shafts and synchronously rotate along with the supporting shafts. The invention also discloses a corresponding cell freezing method. By adopting the cell freezing device and method, a quick freezing effect can be realized, and the uniformity and the stability of feed liquor frozen by the cell freezing device can also be guaranteed, so that a good unfreezing effect can be realized.

The invention aims at providing a donkey-hide processing apparatus for producing donkey-hide gelatin, which is used for solving the technical problem about processing the donkey hide in the donkey-hide gelatin production procedure. The donkey-hide processing apparatus comprises a control system, as well as a thawing heat treatment system, a feeding system, a perforating system and a pulping extruding system which are electrically connected with the control system. The donkey-hide processing apparatus has the beneficial effects that the thawing heat treatment system can thaw and cook the donkeyhide, and the thawing effect is good; the feeding system can realize the uniform laying and transportation of the donkey hide by transporting the donkey hide; the perforating system can perforate thedonkey hide, so that the donkey hide can be better pulped; and the pulping system can sufficiently pulp and extrude the donkey hide.

The invention provides a blood plasma thawing apparatus and a blood plasma thawing automatic control method. The blood plasma thawing apparatus comprises a thawing device, a constant-temperature cold water machine set and a controller, wherein after being heated in the constant-temperature cold water machine set, water forms an external circulation together with the thawing device; temperature sensors are arranged in the simulation blood plasma bag of the thawing device and the constant-temperature cold water machine set for monitoring the treatment process and thawing condition of the thawed blood plasma in real time; the operation time and temperature are recorded and displayed; cold water and hot water prepared by the professional constant-temperature cold water machine set are supplied to the thawing device; an advanced and reliable intelligent control method is adopted, so the thawing process is safe and effectively; and thus, a complete blood plasma thawing quality management system can be constructed conveniently. The entire apparatus adopts a modular structure, the parts of the apparatus have high specialty and stable performance, and thus, the conventional product can be upgraded and the cost of a user is reduced; and because a plurality of heating program modules are arranged according to the specifications and quantity of blood plasma bags and requirements of a thawing process, the thawing is more specific, the operation is intelligent and more convenient and reliable, and energy consumption is greatly reduced.

The invention relates to the technical field of vehicle-mounted refrigerators, in particular to an energy storage plate refrigeration passive vehicle-mounted refrigerator with a rapid unfreezing function. The energy storage plate refrigeration passive vehicle-mounted refrigerator comprises a box body, wherein a refrigeration box and an unfreezing box are arranged in the box body in a sleeved mode.Gaps are formed between the cold closet and the left side and the right side of the box body, the left end and the right end of the refrigeration box are provided with heat conduction surfaces, and the lower end of the refrigeration box is provided with a heat insulation surface. The unfreezing box is arranged at the lower end of the refrigeration box and is provided with heat conduction liquid.Rotating shafts are arranged at the upper ends of the left sides and the right sides of the gaps, the rotating shafts are fixedly connected to the box body and the heat conduction surfaces, handles ofthe rotating shafts are arranged on the outer side of the box body, the rotating shafts are fixedly connected with connecting wires, the other ends of the connecting wires are fixedly connected withphase-change constant-temperature material bags, and phase-change constant-temperature materials are arranged in the phase-change constant-temperature material bags. Heat insulation flexible surfacesare arranged at the left end and the right end of the heat insulation surface. The device is good in refrigeration effect, good in unfreezing effect, simple in structure, and environment-friendly andenergy-saving, and has a wide application prospect.

The invention provides a high-frequency thawing device and a high-frequency thawing method. The high-frequency thawing device comprises a thawing cabin, the thawing cabin comprises a thawing area, thethawing area comprises a positive electrode plate group and a negative electrode plate which are parallel to one another, wherein the positive electrode plate group comprises two or more positive electrode plates, the anode of a high-frequency generator is connected to the positive electrode plates of the positive electrode plate group, and both the cathode and the negative electrode plate of thehigh-frequency generator are connected to ground. The high-frequency generator applies high-frequency electric energy to the positive electrode plates and the negative electrode plate to thaw the frozen foods, wherein the distance between each positive electrode plate and the negative electrode plate can be adjusted. In the invention, the plate surfaces of the positive electrode plates and the negative electrode plate are smaller than the cross section of the frozen food along the plate surface direction, and the corners of the positive electrode plates have arc transition so as to reduce fringe effect. The edge of the positive electrode plates can be bent upwards so as to reduce fringe effect too, and to achieve the purpose of uniform thawing.

The invention discloses a high-efficiency food quick-thawing machine. According to the high-efficiency food quick-thawing machine disclosed by the invention, a transmitting mechanism and a conveying mechanism can be driven under control of a motor braking device, so that, frozen foods after water bath are provided with independent thawing space, and are further conveyed to the next procedure; thetemperature of a heating plate can be controlled by an electromagnetic control device; moreover, a cooperating mechanism and a rotating mechanism act on a fan radiator, so that, hot air circulation isformed under the cooperation of the fan radiator and the heating plate so as ensure continuous food thawing effects on foods being thawed. And thus, the whole thawing process is free of manual operation, namely, automation is realized; moreover, uniform heating on the whole foods being thawed is realized with thawing time and water consumption greatly reduced under the effects of the water bath and the hot air circulation, and thus, thawing efficiency is improved with texture of foods ensured.

The invention discloses a porcine frozen semen unfreezing liquid as well as a preparation method and an unfreezing method thereof, and relates to the technical field of porcine frozen semens. The porcine frozen semen comprises the following components: glucose, sodium citrate, Tris, citric acid, monopotassium phosphate and cysteine. The porcine frozen semen unfreezing liquid has a good unfreezingeffect, so that the porcine semens can keep reactively good activity.

This disclosure discloses a heat pump air-conditioning system and an electric vehicle. The system includes a HVAC assembly, a compressor, and an outdoor heat exchanger. The HVAC assembly includes an indoor condenser, an indoor evaporator, and a damper mechanism. The damper mechanism selectively opens ventilation channels of the indoor condenser and / or the indoor evaporator. An outlet of the compressor communicates to an inlet of the indoor condenser. An outlet of the indoor condenser communicates to an inlet of the outdoor heat exchanger selectively through a first throttle branch or a first through-flow branch. An outlet of the outdoor heat exchanger communicates to an inlet of the indoor evaporator selectively through a second throttle branch or a second through-flow branch. Both an outlet of the indoor evaporator, the outlet of the indoor condenser, and the outlet of the outdoor heat exchanger communicate to an inlet of the compressor.

The invention discloses a thawing device for food detection, comprising a base, wherein two supporting rods are fixed on the base, the top ends of the two supporting rods are connected with a supporting rail, the rail is buckled with two mutually matched thawing covers in a sliding manner, one of the thawing covers is internally fixed with a permanent magnet, the other thawing cover is internallyfixed with two electromagnets with opposite winding, the magnetic pole of the opposite ends of the two electromagnets and the magnetic pole of the opposite ends of the permanent magnet are the same and opposite respectively, a needle tubing is arranged in each thawing cover, a steam pipe is inserted into the needle tubing and is connected with an external steamer, and heating wires are arranged inthe thawing covers. The thawing device provided by the invention is novel in structure and simple to operate, the food can be thawed both internally and externally, the thawing is complete, the thawing speed is high, the structure stability is high, and the service life is long.

The invention provides a heat-tracing heat preservation type water pipe, belongs to the technical field of pipeline heating and heat preservation, and effectively solves the problem that unfreezing is inconvenient after the interior of a water pipe is frozen in winter. According to the technical scheme, the heat-tracing heat preservation type water pipe comprises a water pipe, the water pipe is partially sleeved with a heating mechanism, one side of the heating mechanism is rotationally connected with a fan blade ring, the fan blade ring is connected with a driving mechanism, the heating mechanism communicates with a telescopic pipe, the heating mechanism comprises an annular steam layer close to the periphery of the outer portion of the water pipe, a water storage layer is arranged on the outer side of the steam layer, and a self-heating material layer is arranged on the outer side of the water storage layer and connected with a propelling component. The heat-tracing heat preservation type water pipe has the beneficial effects that the heat-tracing heat preservation type water pipe does not depend on a power source, frozen ice in the water pipe can be quickly unfrozen, and heat can be continuously preserved.

The invention discloses a food defrosting method for a microwave oven, wherein a sensor probe of the microwave oven measures the temperature of a food by using a plurality of sampling points. The method comprises the following steps of: initializing a temperature sensor and a controller, measuring the temperature from the plurality of sampling points by using the temperature sensor, obtaining the highest temperature and the lowest temperature by contrast, comparing the highest temperature and the lowest temperature with a set upper limit temperature and a set lower limit temperature, controlling the running of the microwave oven according to the comparison result, and if the measured highest temperature is lower than the upper limit temperature and the measured lowest temperature is also lower than the lower limit temperature, continuing defrosting the food until the defrosting is stopped by regulating the power level of the microwave oven according to the lowest temperature to re-measure the temperate from the plurality of sampling points, so that the object can be defrosted with the optimum effect.