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WO2018040339A1 - 微波炉控制设备、方法及微波炉 - Google Patents

微波炉控制设备、方法及微波炉 Download PDF

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Publication number
WO2018040339A1
WO2018040339A1 PCT/CN2016/108176 CN2016108176W WO2018040339A1 WO 2018040339 A1 WO2018040339 A1 WO 2018040339A1 CN 2016108176 W CN2016108176 W CN 2016108176W WO 2018040339 A1 WO2018040339 A1 WO 2018040339A1
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Prior art keywords
microwave oven
microwave
heated
food
unit time
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English (en)
French (fr)
Inventor
史龙
贾逾泽
张斐娜
刘民勇
刘建伟
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Midea Group Co Ltd
Guangdong Midea Kitchen Appliances Manufacturing Co Ltd
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Midea Group Co Ltd
Guangdong Midea Kitchen Appliances Manufacturing Co Ltd
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Publication of WO2018040339A1 publication Critical patent/WO2018040339A1/zh
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C7/00—Stoves or ranges heated by electric energy
    • F24C7/08—Arrangement or mounting of control or safety devices
    • F24C7/081—Arrangement or mounting of control or safety devices on stoves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C7/00—Stoves or ranges heated by electric energy
    • F24C7/02—Stoves or ranges heated by electric energy using microwaves
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/64—Heating using microwaves
    • H05B6/66—Circuits
    • H05B6/68—Circuits for monitoring or control
    • H05B6/687—Circuits for monitoring or control for cooking
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2206/00—Aspects relating to heating by electric, magnetic, or electromagnetic fields covered by group H05B6/00
    • H05B2206/04—Heating using microwaves
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers

Definitions

  • the present invention relates to the field of microwave technology, and in particular to a microwave oven control device, a microwave oven control method, and a microwave oven including the microwave oven control device.
  • Microwave is an electromagnetic wave
  • microwave oven is a modern cooking stove that uses microwave to heat food.
  • the microwave oven is composed of a power source, a magnetron, a control circuit, and a cooking chamber.
  • the power supply supplies approximately 4,000 volts of high voltage to the magnetron, and the magnetron continuously generates microwaves under excitation of the power source, and then passes through the waveguide system to couple into the cooking chamber to heat the food.
  • the power range of a microwave oven is generally 500 to 1000 watts.
  • the existing microwave oven uses a magnetron to emit microwaves, thereby heating the food using the microwave.
  • the conventional method is to heat the standard load per unit time according to the IEC standard, and then calculate the energy absorbed by the load according to the temperature rise of the standard load. Finally, the output energy of the microwave oven per unit time is calculated.
  • the inventors of the present application found that the output energy of the above-mentioned test microwave oven has the following defects in the process of implementing the present invention: 1) the existing microwave oven cannot calculate the output microwave energy when working; 2) the existing microwave oven cannot be used for the magnetic control The microwave energy output from the tube is accurately calculated, which requires indirect calculation of the microwave energy output from the magnetron by means of the temperature rise of the standard load.
  • An object of the embodiments of the present invention is to provide a microwave oven control device, a microwave oven control method, and a microwave oven including the microwave oven control device, which can accurately calculate the microwave energy outputted by the microwave oven during operation of the microwave oven and control the microwave oven according to the microwave energy. .
  • an embodiment of the present invention provides a microwave oven control method, the method comprising: determining energy required to be heated in a microwave oven; controlling the microwave oven to heat the food to be heated; detecting the The incident power of the microwave oven; detecting the reflected power of the microwave oven; calculating the microwave energy cumulatively outputted by the microwave oven according to the incident power and the reflected power; and obtaining the absorption of the microwave energy to be heated in the cumulative output
  • the microwave oven is controlled to stop heating.
  • the energy absorbed by the food to be heated in the microwave oven is determined according to the following formula:
  • the microwave energy of the cumulative output of the microwave oven is determined according to the following formula:
  • Cumulative output of microwave energy (sum of incident power per unit time - sum of reflected power per unit time) ⁇ heating time
  • the sum of the incident powers per unit time refers to the sum of the output powers of all microwave sources in the microwave oven per unit time; the sum of the reflected powers per unit time refers to the reception of all the microwave sources per unit time The sum of the power reflected back from the cavity.
  • the incident power and the reflected power per unit time are sampled and averaged as the incident power and the reflected power per unit time.
  • the shorter the unit time the better.
  • the present invention also provides a microwave oven control apparatus, the apparatus comprising: incident power detecting means for detecting incident power of the microwave oven; reflective power detecting means for detecting reflected power of the microwave oven; and control means For determining the energy required to be absorbed by the food to be heated in the microwave oven; controlling the microwave oven to heat the food to be heated; and calculating the cumulative output of the microwave oven according to the incident power and the reflected power Microwave energy; and in the case where the cumulative output microwave energy reaches the energy required to be absorbed by the food to be heated, the microwave oven is controlled to stop heating.
  • control device determines the energy absorbed by the food to be heated in the microwave oven according to the following formula:
  • control device determines the microwave energy outputted by the microwave oven according to the following formula:
  • Cumulative output of microwave energy (sum of incident power per unit time - sum of reflected power per unit time) ⁇ heating time
  • the sum of the incident powers per unit time refers to the sum of the output powers of all microwave sources in the microwave oven per unit time; the sum of the reflected powers per unit time refers to the reception of all the microwave sources per unit time The sum of the power reflected back from the cavity.
  • control device samples and averages the incident power and the reflected power per unit time as the incident power and the reflected power in the unit time.
  • the shorter the unit time the better.
  • the present invention also provides a microwave oven comprising the above microwave oven control device.
  • the output microwave power of the microwave oven can be quantitatively detected, and the detection of the output microwave energy can realize the precise control of the microwave output.
  • the microwave oven of the present invention it is possible to control the microwave oven to stop heating and realize intelligent cooking control without automatically setting the cooking time to automatically absorb the energy required to be heated.
  • FIG. 1 is a schematic structural view of a microwave oven according to an embodiment of the present invention.
  • FIG. 2 is a flowchart of a method for controlling a microwave oven according to an embodiment of the present invention.
  • FIG. 1 is a schematic structural diagram of a microwave oven according to an embodiment of the present invention.
  • an embodiment of the present invention provides a microwave oven including a microwave source 200 and a microwave oven control device.
  • the microwave source may be one or more for generating a microwave signal between 2.4 GHz and 2.5 GHz.
  • the microwave oven control device includes: an incident power detecting device 110 for detecting incident power of the microwave oven; a reflected power detecting device 120 for detecting reflected power of the microwave oven; and a control device 130, for example, a microcontroller An MCU, configured to: determine energy required to be heated in the microwave oven; control the microwave oven to heat the food to be heated; calculate cumulative output of the microwave oven according to the incident power and reflected power The microwave energy; and in the case where the cumulative output microwave energy reaches the energy required to be absorbed by the food to be heated, the microwave oven is controlled to stop heating.
  • the above microwave oven also includes other components, such as a microwave heating chamber, a power source, a rotary table, etc., but since these components are not related to the subject matter of the invention, they will not be described again.
  • the output microwave power of the microwave oven can be quantitatively detected, and the detection of the output microwave energy can realize the precise control of the microwave output.
  • the microwave oven of the present invention it is possible to control the microwave oven to stop heating without automatically setting the cooking time to automatically absorb the energy required to be heated by the microwave energy to be heated. Now intelligent cooking control.
  • the control device 130 can determine the energy required to be absorbed by the food to be heated in the microwave oven according to the following formula:
  • the kind of the food to be heated for example, water, milk, rice, meat, etc.
  • it can be manually input by operating a button on the microwave oven, or can be photographed by a camera in the microwave oven and determined by the image recognition by the control device. It can also be photographed by a camera in a microwave oven and sent to a remote server, and then recognized by the remote server to confirm that the type of food to be heated is returned to the microwave oven.
  • the control device knows the type of the food to be heated, the specific heat capacity can be determined according to the type. For example, a table reflecting the correspondence between the food type and the specific heat capacity can be pre-stored, which can be obtained by searching the table. Know the specific heat capacity of the food to be heated.
  • the weight of the food to be heated described above may be manually input by operating a button on the microwave oven, or may be determined by a weight sensor mounted on a rotating table of the microwave oven.
  • the temperature rise of the food to be heated may be calculated according to an initial temperature of the food to be heated and a temperature to be heated, and the initial temperature of the food to be heated may be assumed to be a normal temperature of 25 degrees Celsius, or a temperature just taken out from the refrigerator, for example 2 to 3 degrees Celsius, the temperature to be heated can be artificially input, and can also be assumed to be a habitual value. For example, for milk, it is generally expected to be heated to about 50 degrees Celsius.
  • the control device may determine the microwave energy of the cumulative output of the microwave oven according to the following formula:
  • Cumulative output of microwave energy (sum of incident power per unit time - sum of reflected power per unit time) ⁇ heating time
  • the control device 130 controls the microwave source to output a specified power, and the specified power can be adjusted according to an artificial one. For example, when a large firepower is required for rapid heating, a large power is output, and when a small firepower is required to heat slowly, a smaller power is output.
  • the control device 130 continuously reads the data detected by the incident power detecting device 110 and the reflected power detecting device 120, and averages the incident and reflected power data read in a unit time, and then multiplies the unit time to obtain a unit. The microwave energy output during the time is then accumulated to determine the microwave energy of the cumulative output.
  • FIG. 2 is a flowchart of a method for controlling a microwave oven according to an embodiment of the present invention. As shown in FIG. 2, a microwave oven control method according to an embodiment of the present invention includes:
  • step S210 the energy absorbed by the food to be heated in the microwave oven is determined.
  • the energy required to be heated in the microwave oven is determined according to the following formula:
  • Step S220 controlling the microwave oven to heat the food to be heated.
  • Step S230 detecting incident power of the microwave oven.
  • Step S240 detecting the reflected power of the microwave oven.
  • Step S250 calculating microwave energy cumulatively outputted by the microwave oven according to the incident power and the reflected power; if the cumulative output microwave energy reaches the energy required to be absorbed by the food to be heated, performing step S260, otherwise Continue to point to steps 230-250 above.
  • the microwave energy of the cumulative output of the microwave oven can be determined according to the following formula:
  • Cumulative output of microwave energy (sum of incident power per unit time - sum of reflected power per unit time) ⁇ heating time
  • the order of execution of the steps involved in the above method is not limited to the flowchart, and may be other sequences, such as detecting the incident power of the microwave oven and detecting the reflected power of the microwave oven.
  • the energy required to determine the food to be heated in the microwave oven is only required to be performed before the energy to be absorbed is compared with the microwave energy outputted by the microwave oven.
  • a program instructing related hardware may be completed by a program instructing related hardware, and the program is stored in a storage medium, and includes a plurality of instructions to make one (may be a single chip microcomputer, A chip or the like or a processor performs all or part of the steps of the method described in various embodiments of the present application.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electric Ovens (AREA)
  • Control Of High-Frequency Heating Circuits (AREA)

Abstract

一种微波炉控制设备、微波炉控制方法及包含该微波炉控制设备的微波炉。微波炉控制方法包括：确定微波炉内待加热食物所需吸收的能量；控制微波炉对待加热食物进行加热；检测微波炉的入射功率；检测微波炉的反射功率；根据入射功率及反射功率，计算微波炉累计输出的微波能量；以及在累计输出的微波能量达到待加热食物所需吸收的能量的情况下，控制微波炉停止加热。通过该控制方法、实现该控制方法的微波炉控制设备，可对包含该控制设备的微波炉的输出微波功率进行定量的检测，而通过对输出微波能量的检测，能够实现微波输出的精确控制。

Description

微波炉控制设备、方法及微波炉 技术领域
本发明涉及微波技术领域，具体地，涉及一种微波炉控制设备、微波炉控制方法及包含所述微波炉控制设备的微波炉。
背景技术
微波是一种电磁波，微波炉是一种用微波加热食品的现代化烹调灶具。微波炉由电源、磁控管、控制电路和烹调腔等部分组成。电源向磁控管提供大约4000伏高压，磁控管在电源激励下，连续产生微波，再经过波导系统，耦合到烹调腔内，从而加热食物。微波炉的功率范围一般为500～1000瓦。
现有微波炉是采用磁控管发射微波，从而利用该微波加热食物。在测试微波炉的输出能量时，常规的办法是根据IEC标准，在单位时间内对标准负载进行加热，然后根据标准负载的温升计算负载吸收的能量。最后经过计算得到单位时间内微波炉的输出能量。
然而，本申请发明人在实现本发明的过程中发现上述测试微波炉的输出能量存在以下缺陷：1)现有微波炉在工作时，不能计算输出的微波能量；2)现有微波炉并不能对磁控管输出的微波能量进行精确的计算，其需要借助标准负载的温升来间接计算磁控管输出的微波能量。
发明内容
本发明实施例的目的是提供一种微波炉控制设备、微波炉控制方法及包含所述微波炉控制设备的微波炉，其可在微波炉工作期间准确计算微波炉输出的微波能量并根据该微波能量对该微波炉进行控制。
为了实现上述目的，本发明实施例提供一种微波炉控制方法，该方法包括：确定所述微波炉内待加热食物所需吸收的能量；控制所述微波炉对所述待加热食物进行加热；检测所述微波炉的入射功率；检测所述微波炉的反射功率；根据所述入射功率及反射功率，计算所述微波炉累计输出的微波能量；以及在所述累计输出的微波能量达到所述待加热食物所需吸收的能量的情况下，控制所述微波炉停止加热。
可选的，根据以下公式确定所述微波炉内待加热食物所需吸收的能量：
Q＝cmΔt
其中，Q为待加热食物所需吸收的热量；c为所述待加热食物的比热容；Δt为所述待加热食物的温升；及m为所述待加热食物的重量。
可选的，根据以下公式确定所述微波炉累计输出的微波能量：
累计输出的微波能量＝(单位时间内的入射功率之和-单位时间内的反射功率之和)×加热时间
所述单位时间内的入射功率之和指代所述微波炉内所有微波源单位时间内的输出功率之和；所述单位时间内的反射功率之和指代所有所述微波源单位时间内接收到从腔体反射回来的功率之和。
可选的，对单位时间内的入射功率及反射功率进行采样并取平均值，以作为该单位时间内的入射功率及反射功率。
可选的，所述单位时间越短越好。
相应的，本发明还提供一种微波炉控制设备，该设备包括：入射功率检测装置，用于检测所述微波炉的入射功率；反射功率检测装置，用于检测所述微波炉的反射功率；以及控制装置，用于执行以下操作：确定所述微波炉内待加热食物所需吸收的能量；控制所述微波炉对所述待加热食物进行加热；根据所述入射功率及反射功率，计算所述微波炉累计输出的微波能量；以及在所述累计输出的微波能量达到所述待加热食物所需吸收的能量的情况下，控制所述微波炉停止加热。
可选的，所述控制装置根据以下公式确定所述微波炉内待加热食物所需吸收的能量：
Q＝cmΔt
其中，Q为待加热食物所需吸收的热量；c为所述待加热食物的比热容；Δt为所述待加热食物的温升；及m为所述待加热食物的重量。
可选的，所述控制装置根据以下公式确定所述微波炉累计输出的微波能量：
累计输出的微波能量＝(单位时间内的入射功率之和-单位时间内的反射功率之和)×加热时间
所述单位时间内的入射功率之和指代所述微波炉内所有微波源单位时间内的输出功率之和；所述单位时间内的反射功率之和指代所有所述微波源单位时间内接收到从腔体反射回来的功率之和。
可选的，所述控制装置对单位时间内的入射功率及反射功率进行采样并取平均值，以作为该单位时间内的入射功率及反射功率。
可选的，所述单位时间越短越好。
相应地，本发明还提供一种微波炉，该微波炉包含上述微波炉控制设备。
通过上述技术方案，可对微波炉的输出微波功率进行定量的检测，而通过对输出微波能量的检测，能够实现微波输出的精确控制。另外，通过采用本发明的微波炉，可无需设置烹饪时间，自动在累计输出的微波能量达到待加热食物所需吸收的能量的情况下，控制所述微波炉停止加热，实现智能化的烹饪控制。
本发明实施例的其它特征和优点将在随后的具体实施方式部分予以详细说明。
附图说明
附图是用来提供对本发明实施例的进一步理解，并且构成说明书的一部分，与下面的具体实施方式一起用于解释本发明实施例，但并不构成对本发明实施例的限制。在附图中：
图1为本发明一实施例提供的微波炉的结构示意图；以及
图2为本发明一实施例提供的微波炉控制方法的流程图。
具体实施方式
以下结合附图对本发明实施例的具体实施方式进行详细说明。应当理解的是，此处所描述的具体实施方式仅用于说明和解释本发明实施例，并不用于限制本发明实施例。
图1为本发明一实施例提供的微波炉的结构示意图。如图1所示，本发明一实施例提供了微波炉，该微波炉包含微波源200及微波炉控制设备。所述微波源可以是1个或多个，用于产生在2.4GHz～2.5GHz之间的微波信号。所述微波炉控制设备包含：入射功率检测装置110，用于检测所述微波炉的入射功率；反射功率检测装置120，用于检测所述微波炉的反射功率；以及控制装置130，例如可为微控制器MCU，用于执行以下操作：确定所述微波炉内待加热食物所需吸收的能量；控制所述微波炉对所述待加热食物进行加热；根据所述入射功率及反射功率，计算所述微波炉累计输出的微波能量；以及在所述累计输出的微波能量达到所述待加热食物所需吸收的能量的情况下，控制所述微波炉停止加热。当然，上述微波炉还包含其他部件，诸如微波加热腔室、电源、旋转工作台等等，但鉴于这些部件与发明的主旨关联不大，故于此不再赘述。
通过上述技术方案，可对微波炉的输出微波功率进行定量的检测，而通过对输出微波能量的检测，能够实现微波输出的精确控制。另外，通过采用本发明的微波炉，可无需设置烹饪时间，自动在累计输出的微波能量达到待加热食物所需吸收的能量的情况下，控制所述微波炉停止加热，实 现智能化的烹饪控制。
所述控制装置130可根据以下公式确定所述微波炉内待加热食物所需吸收的能量：
Q＝cmΔt
其中，Q为待加热食物所需吸收的热量；c为所述待加热食物的比热容；Δt为所述待加热食物的温升；及m为所述待加热食物的重量。
单位重量的负载(水、或不同的食物等)，因为特定负载的比热容是固定的，负载的初始温度一般为常温(25℃，或放在冰箱内的温度)，加热结束的温度也和负载种类有关。因此可以计算出在加热到一定温度时，单位重量的负载所需要吸收的热量。另一方面，在微波炉中，入射到腔体中的微波几乎全部被负载吸收转化为热量(少部分微波为腔体和空气吸收)，因此只要控制微波炉输出的微波能量，等于所要加热的负载升到一定温度所需要的热量即可完成烹饪。
对于上述待加热食物的种类(例如，水、牛奶、米饭、肉类等等)，可通过操纵微波炉上的按键而人工输入，亦可由微波炉内的摄像头进行拍摄并由控制装置进行图像识别来确定，还可由微波炉内的摄像头进行拍摄并发送至远端服务器、之后由该远端服务器识别确认待加热食物的种类回传至微波炉。所述控制装置在得知待加热食物的种类之后，可根据该种类确定其比热容，例如其内可预先存储有一反映食物种类与比热容之间的对应关系的表，其可通过查找该表而得知待加热食物的比热容。对于上述待加热食物的重量，可通过操纵微波炉上的按键而人工输入，亦可由安装至微波炉工作旋转台上的重量传感器感测确定。所述待加热食物的温升可根据待加热食物的初始温度及期望加热至的温度计算得出，而待加热食物的初始温度可假设为常温25摄氏度、或者刚从冰箱内取出时的温度，例如2～3摄氏度，期望加热至的温度可人为输入、亦可假定为一惯常值，比如对于牛奶而言，一般可期望被加热至50摄氏度左右。
所述控制装置可根据以下公式确定所述微波炉累计输出的微波能量：
累计输出的微波能量＝(单位时间内的入射功率之和-单位时间内的反射功率之和)×加热时间
所述单位时间内的入射功率之和指代所述微波炉内所有微波源单位时间内的输出功率之和，所述单位时间内的反射功率之和指代所有所述微波源单位时间内接收到从腔体反射回来的功率之和。
由于微波炉的输出功率可能会因各种原因(例如，环境温升、电压波动等)影响而出现波动，因此可以对单位时间内(如10秒或5秒，可以更短)的入射、反射功率进行采样平均，再计算单位时间内输出的能量，然后将每个单位时间内的输出能量累加。单位时间越短，采样的功率越贴近实际功率值，计算的输出能量会更准确。
现以具有两个微波源的半导体微波炉加热1kg水为例(按照一般情况从常温加热到沸腾)对本发明的技术方案进行说明。
1)首先设置负载为水，重量为1kg，启动半导体微波炉。
2)计算加热水所需要的热量。常温水25℃，加热至沸腾100℃；水的重量是1kg，水的比热容是4.2×103J/(kg*℃)；则加热这1L水所需要的热量为Q＝4.2×103×1×(100-25)J＝3.15×105J。
3)控制装置130控制微波源输出指定功率，该指定功率可根据人为调节，例如需要大火力快速加热时则输出较大的功率，需要小火力慢慢加热时则输出较小的功率。
4)控制装置130不断的读取入射功率检测装置110及反射功率检测装置120检测到的数据，并将单位时间内读取回来的入射、反射功率数据做平均，然后乘与单位时间，得到单位时间内输出的微波能量，然后累加求出累计输出的微波能量。
5)判断累计输出的微波能量，如果该累计输出的微波能量大于或等于Q，则结束烹调；否者继续执行上述步骤4)。
图2为本发明一实施例提供的微波炉控制方法的流程图。如图2所述，本发明一实施例提供的微波炉控制方法包括：
步骤S210，确定所述微波炉内待加热食物所需吸收的能量。
其中，根据以下公式确定所述微波炉内待加热食物所需吸收的能量：
Q＝cmΔt
其中，Q为待加热食物所需吸收的热量；c为所述待加热食物的比热容；Δt为所述待加热食物的温升；及m为所述待加热食物的重量。
步骤S220，控制所述微波炉对所述待加热食物进行加热。
步骤S230，检测所述微波炉的入射功率。
步骤S240，检测所述微波炉的反射功率。
步骤S250，根据所述入射功率及反射功率，计算所述微波炉累计输出的微波能量；在所述累计输出的微波能量达到所述待加热食物所需吸收的能量的情况下，执行步骤S260，否则继续指向上述步骤230-250。
可根据以下公式确定所述微波炉累计输出的微波能量：
累计输出的微波能量＝(单位时间内的入射功率之和-单位时间内的反射功率之和)×加热时间
所述单位时间内的入射功率之和指代所述微波炉内所有微波源单位时间内的输出功率之和；所述单位时间内的反射功率之和指代所有所述微波源单位时间内接收到从腔体反射回来的功率之和。
步骤S260，控制所述微波炉停止加热。
需要说明的是，上述微波炉控制方法的具体细节及益处可参阅上述针对微波炉控制设备的描述，于此不再赘述。另外，上述方法所涉及的步骤的执行顺序并不限于流程图所示，还可为其他的顺序，例如检测所述微波炉的入射功率以及检测所述微波炉的反射功率这两个步骤可以是同时进行的，确定所述微波炉内待加热食物所需吸收的能量仅需在将该所需吸收的能量与微波炉累计输出的微波能量进行比较之前执行即可。
以上结合附图详细描述了本发明例的可选实施方式，但是，本发明实施例并不限于上述实施方式中的具体细节，在本发明实施例的技术构思范围内，可以对本发明实施例的技术方案进行多种简单变型，这些简单变型均属于本发明实施例的保护范围。
另外需要说明的是，在上述具体实施方式中所描述的各个具体技术特征，在不矛盾的情况下，可以通过任何合适的方式进行组合。为了避免不必要的重复，本发明实施例对各种可能的组合方式不再另行说明。
本领域技术人员可以理解实现上述实施例方法中的全部或部分步骤是可以通过程序来指令相关的硬件来完成，该程序存储在一个存储介质中，包括若干指令用以使得一个(可以是单片机，芯片等)或处理器(processor)执行本申请各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(ROM，Read-Only Memory)、随机存取存储器(RAM，Random Access Memory)、磁碟或者光盘等各种可以存储程序代码的介质。
此外，本发明实施例的各种不同的实施方式之间也可以进行任意组合，只要其不违背本发明实施例的思想，其同样应当视为本发明实施例所公开的内容。

Claims (11)

  1. 一种微波炉控制方法，其特征在于，该方法包括：
    确定所述微波炉内待加热食物所需吸收的能量；
    控制所述微波炉对所述待加热食物进行加热；
    检测所述微波炉的入射功率；
    检测所述微波炉的反射功率；
    根据所述入射功率及反射功率，计算所述微波炉累计输出的微波能量；以及
    在所述累计输出的微波能量达到所述待加热食物所需吸收的能量的情况下，控制所述微波炉停止加热。
  2. 根据权利要求1所述的方法，其特征在于，根据以下公式确定所述微波炉内待加热食物所需吸收的能量：
    Q＝cmΔt
    其中，Q为待加热食物所需吸收的热量；c为所述待加热食物的比热容；Δt为所述待加热食物的温升；及m为所述待加热食物的重量。
  3. 根据权利要求1所述的方法，其特征在于，根据以下公式确定所述微波炉累计输出的微波能量：
    累计输出的微波能量＝(单位时间内的入射功率之和-单位时间内的反射功率之和)×加热时间
    所述单位时间内的入射功率之和指代所述微波炉内所有微波源单位时间内的输出功率之和；
    所述单位时间内的反射功率之和指代所有所述微波源单位时间内接收到从腔体反射回来的功率之和。
  4. 根据权利要求3所述的方法，其特征在于，对单位时间内的入射功率及反射功率进行采样并取平均值，以作为该单位时间内的入射功率及反射功率。
  5. 根据权利要求4所述的方法，其特征在于，所述单位时间越短越好。
  6. 一种微波炉控制设备，其特征在于，该设备包括：
    入射功率检测装置，用于检测所述微波炉的入射功率；
    反射功率检测装置，用于检测所述微波炉的反射功率；以及
    控制装置，用于执行以下操作：
    确定所述微波炉内待加热食物所需吸收的能量；
    控制所述微波炉对所述待加热食物进行加热；
    根据所述入射功率及反射功率，计算所述微波炉累计输出的微波能量；以及
    在所述累计输出的微波能量达到所述待加热食物所需吸收的能量的情况下，控制所述微波炉停止加热。
  7. 根据权利要求6所述的设备，其特征在于，所述控制装置根据以下公式确定所述微波炉内待加热食物所需吸收的能量：
    Q＝cmΔt
    其中，Q为待加热食物所需吸收的热量；c为所述待加热食物的比热容；Δt为所述待加热食物的温升；及m为所述待加热食物的重量。
  8. 根据权利要求6所述的设备，其特征在于，所述控制装置根据以下公式确定所述微波炉累计输出的微波能量：
    累计输出的微波能量＝(单位时间内的入射功率之和-单位时间内的反射功率之和)×加热时间
    所述单位时间内的入射功率之和指代所述微波炉内所有微波源单位时间内的输出功率之和；
    所述单位时间内的反射功率之和指代所有所述微波源单位时间内接收到从腔体反射回来的功率之和。
  9. 根据权利要求8所述的设备，其特征在于，所述控制装置对单位时间内的入射功率及反射功率进行采样并取平均值，以作为该单位时间内的入射功率及反射功率。
  10. 根据权利要求9所述的设备，其特征在于，所述单位时间越短越好。
  11. 一种微波炉，其特征在于，该微波炉包含根据权利要求6-10中任一项权利要求所述的微波炉控制设备。
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