CN102149228A - Microwave heater - Google Patents

Abstract

Translated fromChinese

本发明提供一种微波加热器，该微波加热器包括：微波产生电路，产生微波信号；波导，与所述的微波产生电路相耦接，接收所述的微波信号，并在所述微波信号的作用下共振，以产生能量；热产生元件，与所述的波导耦接，当从所述的波导接收能量时，向外辐射红外线；热量输出耦合模块，与所述的热产生元件连接，对液体进行加热；所述的微波产生电路以第一频率向所述的波导提供过耦合能量，以第二频率将维持所述热产生元件产生的热量。该微波加热器对微波的吸收能力强，能够快速地利用电磁能量加热液体。

The present invention provides a microwave heater, which includes: a microwave generating circuit, which generates a microwave signal; a waveguide, which is coupled to the microwave generating circuit, receives the microwave signal, and resonates under the action of the microwave signal to generate energy; a heat generating element, which is coupled to the waveguide, radiates infrared rays outward when receiving energy from the waveguide; a heat output coupling module, which is connected to the heat generating element, and heats the liquid; the microwave generating circuit provides over-coupling energy to the waveguide at a first frequency, and maintains the heat generated by the heat generating element at a second frequency. The microwave heater has a strong ability to absorb microwaves and can quickly use electromagnetic energy to heat the liquid.

Description

Translated fromChinese

一种微波加热器A microwave heater

交叉引用cross reference

本申请要求申请号为10101429.7，申请日为2010年2月8日的香港短期专利申请的优先权，其内容被合并与此作为参考。This application claims priority from Hong Kong Short-Term Patent Application No. 10101429.7 filed 8 February 2010, the contents of which are incorporated herein by reference.

技术领域technical field

本发明是关于微波谐振技术，特别是关于一种微波加热技术，具体是关于一种微波加热器。The present invention relates to microwave resonance technology, in particular to a microwave heating technology, in particular to a microwave heater.

背景技术Background technique

现有技术中，在利用波导加热的微波加热器中，矩形波导在多个点被弯折，整体呈现出绕组形式，波导的宽度一般是确定的。然而，这种类型的微波加热器电磁能的浓度低，所以对于被加热物体，尤其是那些介质损耗小的被加热物体来说，提供的能量不能够被有效的利用。并且这种类型的微波加热器的尺寸相对较大，而波导的介电常数较小，很难进行快速加热。In the prior art, in microwave heaters heated by waveguides, the rectangular waveguide is bent at multiple points, presenting a winding form as a whole, and the width of the waveguide is generally determined. However, this type of microwave heater has a low concentration of electromagnetic energy, so for heated objects, especially those heated objects with low dielectric loss, the provided energy cannot be effectively utilized. Moreover, the size of this type of microwave heater is relatively large, and the dielectric constant of the waveguide is small, so it is difficult to perform rapid heating.

发明内容Contents of the invention

本发明的目的在于提供一种微波加热器，以快速地利用电磁能量加热液体。The object of the present invention is to provide a microwave heater to rapidly heat liquid with electromagnetic energy.

为了实现上述目的，本发明提供一种微波加热器，该微波加热器包括：微波产生电路，产生微波信号；波导，与所述的微波产生电路相耦接，接收所述的微波信号，并在所述微波信号的作用下共振，以产生能量；热产生元件，与所述的波导耦接，当从所述的波导接收能量时，向外辐射红外线；热量输出耦合模块，与所述的热产生元件连接，对液体进行加热；所述的微波产生电路以第一频率向所述的波导提供过耦合能量，以第二频率将维持所述热产生元件产生的热量。In order to achieve the above object, the present invention provides a microwave heater, which includes: a microwave generating circuit for generating a microwave signal; a waveguide coupled with the microwave generating circuit for receiving the microwave signal, and Resonate under the action of the microwave signal to generate energy; the heat generating element is coupled with the waveguide, and when receiving energy from the waveguide, radiates infrared rays outward; the heat output coupling module is connected with the heat waveguide The generating element is connected to heat the liquid; the microwave generating circuit provides overcoupling energy to the waveguide at the first frequency, and maintains the heat generated by the heat generating element at the second frequency.

本发明的有益技术效果：该微波加热器对微波的吸收能力强，能够有效地利用电磁能量加热液体。Beneficial technical effects of the present invention: the microwave heater has strong microwave absorption ability and can effectively use electromagnetic energy to heat liquid.

附图说明Description of drawings

图1为本发明实施例微波加热器示意图；Fig. 1 is the schematic diagram of the microwave heater of the embodiment of the present invention;

图2为本发明实施例微波加热器的结构示意图；Fig. 2 is the structural representation of the microwave heater of the embodiment of the present invention;

图3为本发明实施例图2微波产生电路的结构示意图；Fig. 3 is the schematic structural diagram of Fig. 2 microwave generating circuit of the embodiment of the present invention;

图4为本发明另一实施例微波加热器的结构示意图；Fig. 4 is a schematic structural view of a microwave heater according to another embodiment of the present invention;

图5为本发明另一实施例图4的微波产生电路的结构示意图。FIG. 5 is a schematic structural diagram of the microwave generating circuit shown in FIG. 4 according to another embodiment of the present invention.

具体实施方式Detailed ways

本发明提供一种微波加热器，以快速地利用电磁能量加热，下面结合附图进行详细说明。The present invention provides a microwave heater for rapid heating with electromagnetic energy, which will be described in detail below with reference to the accompanying drawings.

图1为本发明实施例微波加热器示意图，如图1所示，所述的微波加热器包括：微波产生电路101，波导102，热产生元件103及热量输出耦合模块104。FIG. 1 is a schematic diagram of a microwave heater according to an embodiment of the present invention. As shown in FIG. 1 , the microwave heater includes: amicrowave generating circuit 101 , awaveguide 102 , a heat generatingelement 103 and a heatoutput coupling module 104 .

微波产生电路101产生微波信号并输出微波信号。波导102由固体介电材料制成，固体介电材料的介电常数大于或等于2。波导102与所述的微波产生电路101相耦接，接收所述的微波信号，并在所述微波信号的作用下共振，以产生能量；热产生元件103与所述的波导101耦接，当从所述的波导101接收能量时，向外辐射红外线；热量输出耦合模块104与所述的热产生元件103连接，对液体进行加热。所述的热量输出耦合模块104可以为圆筒形、矩形、多边形或者它们的结合。液体可以放在热量输出耦合模块104中进行加热，也可以在热量输出耦合模块104的表面进行加热，本发明不限于此。Themicrowave generating circuit 101 generates microwave signals and outputs microwave signals. Thewaveguide 102 is made of a solid dielectric material having a dielectric constant greater than or equal to two. Thewaveguide 102 is coupled with themicrowave generating circuit 101, receives the microwave signal, and resonates under the action of the microwave signal to generate energy; the heat generatingelement 103 is coupled with thewaveguide 101, when When energy is received from thewaveguide 101, infrared rays are radiated outward; the heatoutput coupling module 104 is connected with the heat generatingelement 103 to heat the liquid. The heatoutput coupling module 104 may be cylindrical, rectangular, polygonal or a combination thereof. The liquid can be placed in the heatoutput coupling module 104 for heating, or can be heated on the surface of the heatoutput coupling module 104, the present invention is not limited thereto.

微波加热器为矩形或者圆柱形等其他形状，本发明不依此为限。The microwave heater is in other shapes such as rectangle or cylinder, and the present invention is not limited thereto.

如图2所示，所述的波导102包括：输入耦合模块201及输入探头202，输入耦合模块201接收所述微波产生电路101产生的微波信号。输入探头202连接所述的输入耦合模块201与微波产生电路101，与微波产生电路101产生的微波信号将通过输入探头202传输到输入耦合模块201。输入探头201位于所述的输入耦合模块201中，并且靠近最小基本谐振模式的电场。As shown in FIG. 2 , thewaveguide 102 includes: aninput coupling module 201 and aninput probe 202 , and theinput coupling module 201 receives the microwave signal generated by themicrowave generating circuit 101 . Theinput probe 202 is connected to theinput coupling module 201 and themicrowave generation circuit 101 , and the microwave signal generated by themicrowave generation circuit 101 will be transmitted to theinput coupling module 201 through theinput probe 202 . Theinput probe 201 is located in theinput coupling module 201 and is close to the electric field of the minimum fundamental resonance mode.

微波产生电路101以第一频率向所述的波导提供过耦合能量，以第二频率将维持所述热产生元件产生的热量，第一频率及第二频率的取值范围为300MHz至10GHz，本发明不依此为限。Themicrowave generating circuit 101 provides overcoupling energy to the waveguide at the first frequency, and maintains the heat generated by the heat generating element at the second frequency. The value range of the first frequency and the second frequency is 300MHz to 10GHz. The invention is not limited thereto.

图3为本发明实施例图2的微波产生电路的结构示意图，如图3所示，所述的输入探头202与微波产生电路101相连接，微波产生电路101包括：微波信号源301，前置放大器302，信号衰减器303，中级功率放大器304，高级功率放大器305，滤波器306，反馈探头307及控制器308(CPU)。Fig. 3 is a schematic structural diagram of the microwave generating circuit shown in Fig. 2 according to an embodiment of the present invention. As shown in Fig. 3, theinput probe 202 is connected to themicrowave generating circuit 101, and themicrowave generating circuit 101 includes: amicrowave signal source 301, afront Amplifier 302,signal attenuator 303,mid-level power amplifier 304, high-level power amplifier 305,filter 306,feedback probe 307 and controller 308 (CPU).

前置放大器302，中级功率放大器304及高级功率放大器305组成放大器电路，对向所述波导提供的能量进行放大。Thepreamplifier 302, themid-level power amplifier 304 and the high-level power amplifier 305 form an amplifier circuit to amplify the energy provided to the waveguide.

微波信号源301产生的微波信号W1首先经过前置放大器302进行信号放大，生成微波信号W2，然后进入信号衰减器303衰减为微波信号W3，随后经过中级功率放大器304及高级功率放大器305进行功率放大，生成微波信号W4。微波信号W4通过滤波器306进行滤波，滤掉噪声信号，得到合适的微波信号，并将该微波信号发送给输入探头202，通过输入探头202传送给波导102的输入耦合模块201，微波信号将使得波导产生共振，波导的共振产生热量。热产生元件103从波导102吸收热量，然后将热量传输给热量输出耦合模块104，热量输出耦合模块104对被加热物体进行热处理。The microwave signal W1 generated by themicrowave signal source 301 is first amplified by thepreamplifier 302 to generate a microwave signal W2, then enters thesignal attenuator 303 to attenuate into a microwave signal W3, and then passes through theintermediate power amplifier 304 and theadvanced power amplifier 305 for power amplification , generating microwave signal W4. The microwave signal W4 is filtered by thefilter 306 to filter out the noise signal to obtain a suitable microwave signal, and the microwave signal is sent to theinput probe 202, and then transmitted to theinput coupling module 201 of thewaveguide 102 through theinput probe 202, and the microwave signal will make The waveguide resonates, and the resonance of the waveguide generates heat. Theheat generating element 103 absorbs heat from thewaveguide 102, and then transmits the heat to the heatoutput coupling module 104, and the heatoutput coupling module 104 performs heat treatment on the heated object.

在图3中，控制器308控制微波信号源301发出微波信号W1，控制信号衰减器303衰减微波信号，控制前置放大器302，中级功率放大器304及高级功率放大器305进行功率放大。经滤波器306滤波后的微波信号还要传输到反馈探头307，反馈探头307检测滤波后的信号是否合适，并将检测结果发送给控制器308，控制器308根据检测结果对微波产生电路中的元件进行调节控制，以得到适合输入到波导102的微波信号。In FIG. 3 , thecontroller 308 controls themicrowave signal source 301 to send out the microwave signal W1, controls thesignal attenuator 303 to attenuate the microwave signal, and controls thepreamplifier 302, theintermediate power amplifier 304 and the high-level power amplifier 305 to perform power amplification. The microwave signal filtered by thefilter 306 is also transmitted to thefeedback probe 307, thefeedback probe 307 detects whether the filtered signal is suitable, and sends the detection result to thecontroller 308, and thecontroller 308 controls the microwave generation circuit according to the detection result The components are adjusted and controlled to obtain microwave signals suitable for input into thewaveguide 102 .

图4为本发明另一实施例微波加热器的结构示意图；图4与图2的不同之处在于图4中的微波加热器包括反馈探头307，反馈探头307检测输入探头202发送到波导102中的信号是否合适，并将检测结果发送给控制器308，控制器308根据检测结果对微波产生电路中的元件进行调节控制，以得到适合输入到波导102的微波信号。Fig. 4 is a structural schematic diagram of a microwave heater according to another embodiment of the present invention; the difference between Fig. 4 and Fig. 2 is that the microwave heater in Fig. 4 includes afeedback probe 307, and thefeedback probe 307 detects that theinput probe 202 is sent to thewaveguide 102 The signal is suitable, and the detection result is sent to thecontroller 308, and thecontroller 308 adjusts and controls the components in the microwave generating circuit according to the detection result, so as to obtain a microwave signal suitable for inputting into thewaveguide 102.

图5为本发明另一实施例图4的微波产生电路的结构示意图；如图5所示，所述的输入探头202及反馈探头307与微波产生电路相连接。微波产生电路包括：微波信号源301，前置放大器302，信号衰减器303，中级功率放大器304，高级功率放大器305，滤波器306及控制器308(CPU)。FIG. 5 is a schematic structural diagram of the microwave generating circuit shown in FIG. 4 according to another embodiment of the present invention; as shown in FIG. 5 , theinput probe 202 and thefeedback probe 307 are connected to the microwave generating circuit. The microwave generating circuit includes: amicrowave signal source 301, apreamplifier 302, asignal attenuator 303, anintermediate power amplifier 304, anadvanced power amplifier 305, afilter 306 and a controller 308 (CPU).

前置放大器302，中级功率放大器304及高级功率放大器305组成放大器电路，对向所述波导提供的能量进行放大。Thepreamplifier 302, themid-level power amplifier 304 and the high-level power amplifier 305 form an amplifier circuit to amplify the energy provided to the waveguide.

输入探头202为波导102提供能量输入，反馈探头307将微波产生电路通过输入探头202输入到波导102的能量输出反馈给微波产生电路。反馈探头307将反馈信号输出给微波产生电路后，首先经过信号衰减器303，控制器308控制信号衰减器303将反馈信号衰减为微波信号W1′，并将微波信号W1′发送给微波信号源301和控制器308，控制器308根据接收到的反馈信号控制微波信号源301输出微波信号W2′，微波信号W2′依次经过前置放大器302，中级功率放大器304及高级功率放大器305后放大为微波信号W3′，微波信号W3经过输入探头202传送给波导102的输入耦合模块201，微波信号将使得波导产生共振，波导的共振产生热量。热产生元件103从波导102吸收热量，然后将热量传输给热量输出耦合模块104，热量输出耦合模块104加热盛放于其中或位于其表面的液体。Theinput probe 202 provides energy input for thewaveguide 102 , and thefeedback probe 307 feeds back the energy output of the microwave generation circuit input to thewaveguide 102 through theinput probe 202 to the microwave generation circuit. After thefeedback probe 307 outputs the feedback signal to the microwave generating circuit, it first passes through thesignal attenuator 303, and thecontroller 308 controls thesignal attenuator 303 to attenuate the feedback signal into a microwave signal W1', and sends the microwave signal W1' to themicrowave signal source 301 And thecontroller 308, thecontroller 308 controls themicrowave signal source 301 to output the microwave signal W2' according to the feedback signal received, and the microwave signal W2' passes through thepreamplifier 302, theintermediate power amplifier 304 and the high-level power amplifier 305, and then amplifies it into a microwave signal W3', the microwave signal W3 is transmitted to theinput coupling module 201 of thewaveguide 102 through theinput probe 202, the microwave signal will cause the waveguide to resonate, and the resonance of the waveguide will generate heat. The heat generatingelement 103 absorbs heat from thewaveguide 102, and then transmits the heat to the heatoutput coupling module 104, and the heatoutput coupling module 104 heats the liquid contained therein or on its surface.

图5中的微波产生电路还包括驱动探头501，当微波加热器启动后，驱动探头501将向控制器308发送启动信号，控制器308将控制微波信号源301发送微波信号，并根据信号衰减器303发来的反馈信号控制微波信号源301发送的微波信号的强度，同时控制前置放大器302，中级功率放大器304及高级功率放大器305对信号进行放大。The microwave generating circuit in Fig. 5 also includes adriving probe 501. When the microwave heater is started, thedriving probe 501 will send a starting signal to thecontroller 308, and thecontroller 308 will control themicrowave signal source 301 to send a microwave signal, and according to the signal attenuator The feedback signal sent by 303 controls the intensity of the microwave signal sent by themicrowave signal source 301, and at the same time controls thepreamplifier 302, theintermediate power amplifier 304 and theadvanced power amplifier 305 to amplify the signal.

本发明的有益技术效果：该微波加热器对微波的吸收能力强，能够快速地利用电磁能量加热液体。Beneficial technical effects of the present invention: the microwave heater has a strong ability to absorb microwaves, and can rapidly use electromagnetic energy to heat liquid.

本领域普通技术人员可以理解实现上述实施例方法中的全部或部分流程，可以通过计算机程序来指令相关的硬件来完成，所述的程序可存储于一计算机可读取存储介质中，该程序在执行时，可包括如上述各方法的实施例的流程。其中，所述的存储介质可为磁碟、光盘、只读存储记忆体(Read-Only Memory，ROM)或随机存储记忆体(Random Access Memory，RAM)等。Those of ordinary skill in the art can understand that all or part of the processes in the methods of the above embodiments can be realized by instructing related hardware through a computer program, and the program can be stored in a computer-readable storage medium. During execution, it may include the processes of the embodiments of the above-mentioned methods. Wherein, the storage medium may be a magnetic disk, an optical disk, a read-only memory (Read-Only Memory, ROM) or a random access memory (Random Access Memory, RAM), etc.

以上所述的具体实施方式，对本发明的目的、技术方案和有益效果进行了进一步详细说明，所应理解的是，以上所述仅为本发明的具体实施方式而已，并不用于限定本发明的保护范围，凡在本发明的精神和原则之内，所做的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。The specific embodiments described above have further described the purpose, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above descriptions are only specific embodiments of the present invention and are not intended to limit the scope of the present invention. Protection scope, within the spirit and principles of the present invention, any modification, equivalent replacement, improvement, etc., shall be included in the protection scope of the present invention.

Claims (9)

Translated fromChinese

1.一种微波加热器，其特征在于，所述的微波加热器包括：1. a microwave heater, is characterized in that, described microwave heater comprises:微波产生电路，产生微波信号；Microwave generating circuit to generate microwave signal;波导，与所述的微波产生电路相耦接，接收所述的微波信号，并在所述微波信号的作用下共振，以产生能量；The waveguide is coupled with the microwave generating circuit, receives the microwave signal, and resonates under the action of the microwave signal to generate energy;热产生元件，与所述的波导耦接，当从所述的波导接收能量时，向外辐射红外线；a heat generating element, coupled to the waveguide, radiates infrared rays outward when receiving energy from the waveguide;热量输出耦合模块，与所述的热产生元件连接，对液体进行加热；The heat output coupling module is connected with the heat generating element to heat the liquid;所述的微波产生电路以第一频率向所述的波导提供过耦合能量，以第二频率将维持所述热产生元件产生的热量。The microwave generating circuit provides overcoupling energy to the waveguide at a first frequency, and maintains heat generated by the heat generating element at a second frequency.2.如权利要求1所述的微波加热器，其特征在于，所述的波导包括输入耦合模块，接收所述微波产生电路产生的微波信号。2. The microwave heater according to claim 1, wherein the waveguide includes an input coupling module for receiving the microwave signal generated by the microwave generating circuit.3.如权利要求2所述的微波加热器，其特征在于，所述的微波加热器还包括：3. microwave heater as claimed in claim 2 is characterized in that, described microwave heater also comprises:输入探头，连接所述的输入耦合模块与微波产生电路。The input probe is connected to the input coupling module and the microwave generating circuit.4.如权利要求1所述的微波加热器，其特征在于，所述的微波产生电路包括：4. The microwave heater according to claim 1, wherein said microwave generating circuit comprises:微波信号源，产生所述的微波信号；A microwave signal source, generating the microwave signal;放大器电路，对所述的微波信号进行放大；An amplifier circuit, amplifying the microwave signal;滤波器，对经过所述放大器电路放大后的微波信号进行滤波；a filter for filtering the microwave signal amplified by the amplifier circuit;控制器，控制所述的微波产生电路向波导提供微波信号。A controller controls the microwave generating circuit to provide microwave signals to the waveguide.5.如权利要求3所述的微波加热器，其特征在于，所述的输入探头位于所述的输入耦合模块中，并且靠近最小基本谐振模式的电场。5. The microwave heater according to claim 3, wherein said input probe is located in said input coupling module and is close to the electric field of the smallest fundamental resonance mode.6.如权利要求1所述的微波加热器，其特征在于，所述第一频率的取值范围为300MHz至10GHz。6. The microwave heater according to claim 1, characterized in that, the value range of the first frequency is 300 MHz to 10 GHz.7.如权利要求1所述的微波加热器，其特征在于，所述的波导由固体介电材料制成。7. The microwave heater of claim 1, wherein said waveguide is made of a solid dielectric material.8.如权利要求1所述的微波加热器，其特征在于，所述固体介电材料的介电常数大于或等于2。8. The microwave heater according to claim 1, wherein the dielectric constant of the solid dielectric material is greater than or equal to 2.9.如权利要求1所述的微波加热器，其特征在于，所述的微波加热器为矩形或者圆柱形。9. The microwave heater according to claim 1, characterized in that, the microwave heater is rectangular or cylindrical.

Images