Microwave generation assembly and cooking equipment

Abstract

The embodiment of the invention provides a microwave generating assembly and cooking equipment, and the microwave generating assembly comprises a magnetron which is used for generating microwaves; the at least one waveguide tube is connected with the magnetron, microwaves generated by the magnetron pass through the waveguide tube, the waveguide tube is provided with at least one first microwave outlet and at least one second microwave outlet, and the first microwave outlet is provided with an adjusting piece with a variable on-off state; wherein the adjusting part is in a first state, the microwaves pass through the second microwave outlet, the adjusting part is in a second state, and the microwaves pass through the first microwave outlet and the second microwave outlet. According to the technical scheme, the output path of the microwave is switched through the adjusting piece, the electromagnetic field distribution in the microwave oven cavity is changed, and therefore the more uniform heating effect is achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of microwave technology, and in particular, to a microwave generating assembly and a cooking device. BACKGROUND

[0002] At present, microwave ovens have become common kitchen appliances. The heating uniformity of a flat plate type microwave oven is poor when it is in operation. In the related art, a stirring system is built in the microwave oven, and a physical method is used to stir the microwaves by driving an antenna to rotate by a motor. However, the structure of the system occupies a large space, and thus the volume rate of the whole machine is low. SUMMARY

[0003] The present application is directed to at least one of the problems existing in the prior art or related art.

[0004] Therefore, an embodiment of the first aspect of the present application provides a microwave generating assembly.

[0005] An embodiment of the second aspect of the present application provides a cooking device.

[0006] In order to achieve the above-mentioned purpose, an embodiment of the first aspect of the present application provides a microwave generating assembly, comprising: a magnetron, the magnetron being configured to generate microwaves; at least one waveguide, connected to the magnetron, the microwaves generated by the magnetron passing through the waveguide, the waveguide being provided with at least one first microwave outlet and at least one second microwave outlet, and the first microwave outlet being provided with an adjusting member with variable on-off states; wherein, when the adjusting member is in a first state, the microwaves pass through the second microwave outlet, and when the adjusting member is in a second state, the microwaves pass through the first microwave outlet and the second microwave outlet.

[0007] The microwave generating assembly according to the present application can switch the output path of the microwaves by using the adjusting member on the waveguide, change the electromagnetic field distribution in the cavity of the microwave oven, and thus achieve a more uniform heating effect. It can be understood that, compared with the traditional stirring motor system, this scheme uses a simple adjusting member, and the control of the microwave path can be realized by switching the state of the adjusting member itself, which reduces the mechanical components, reduces the cost and the maintenance difficulty. Further, by accurately controlling the output of the microwaves, the energy waste can be reduced, and the energy efficiency of the microwave oven can be improved.

[0008] Specifically, the microwave generating assembly includes a magnetron, a waveguide, and an adjusting member. The magnetron generates microwave energy, which is the core of the entire microwave generating assembly and provides the necessary energy source for the heating process. The waveguide transmits the microwaves generated by the magnetron to the microwave oven cavity, ensuring efficient transmission of microwave energy and reducing energy loss. By providing two outlets on the waveguide, namely a first microwave outlet and a second microwave outlet, as a channel for microwave energy to enter the microwave oven cavity. By controlling the on-off state of the two outlets, the propagation path of the microwaves in the cavity can be changed. Among them, the adjusting member is arranged at the first microwave outlet, which can control whether the microwaves are fed through the first microwave outlet. Specifically, in the first state, the microwaves only pass through the second microwave outlet, forming a single heating area, and in the second state, the microwaves pass through the first microwave outlet and the second microwave outlet at the same time, forming a more complex electromagnetic field distribution, improving the heating uniformity.

[0009] The application utilizes the adjusting member arranged at the first microwave outlet to adjust the feeding path of the microwaves by changing the state of the adjusting member itself, thereby improving the heating uniformity in a smaller space.

[0010] In some technical solutions, optionally, the adjusting member is a diode. When the diode is in a conducting state, the microwaves pass through the second microwave outlet, and when the diode is in a cut-off state, the microwaves pass through the first microwave outlet and the second microwave outlet.

[0011] In this technical solution, the adjusting member is selected as a diode, and those skilled in the art can understand that when the diode receives a forward voltage (such as 3.3V), it will be in a conducting state. In this state, the diode is equivalent to a closed circuit, which is equivalent to short-circuiting the intermediate metal of the first microwave outlet, forming a cut-off state, thereby preventing the microwaves from passing through the first microwave outlet. Therefore, the microwaves can only enter the cavity of the microwave oven through the second microwave outlet. When the diode does not receive a forward voltage or receives a reverse voltage, it will be in a cut-off state. In this state, the diode is equivalent to an open circuit, allowing the microwaves to pass through the first microwave outlet and the second microwave outlet at the same time.

[0012] By controlling the on-off state of the diode, the output path of the microwaves can be changed, thereby affecting the electromagnetic field distribution in the cavity.

[0013] The control of the on-off state of the diode can be realized by a specific circuit, and can also be realized by a set program or hardware structure.

[0014] In some technical solutions, optionally, the control circuit is further provided, and the diode is connected in series with the control circuit, and the control circuit is used to control the conduction and cut-off of the diode.

[0015] In the technical solution, the control circuit is arranged in series with the diode, and the control circuit can control the on and off states of the diode. The control circuit can receive instructions from a user interface or an automatic control system, and send corresponding voltage signals to the diode according to the received instructions. The control circuit ensures that the diode is turned on (receives a forward voltage) or turned off (receives no voltage or a reverse voltage) when needed.

[0016] The on and off states of the diode determine the propagation path of the microwaves, thereby affecting the heating mode in the microwave oven. The diode can quickly switch states according to the signal of the control circuit, thereby realizing dynamic adjustment of the microwave output path.

[0017] In a specific embodiment, a user sets heating parameters or selects an automatic mode through a user interface. The control circuit determines the output path of the microwaves according to the user settings or an automatic control algorithm. The control circuit sends forward or reverse voltage signals to the diode. The diode is turned on or turned off according to the received signals.

[0018] In some technical solutions, the adjusting member includes a metal sheet arranged at the first microwave outlet and a driving structure in driving connection with the metal sheet, the driving structure being configured to drive the metal sheet to move to the first position or the second position. When the metal sheet moves to the first position, the metal sheet is in contact with the first microwave outlet, and the adjusting member is in the first state. When the metal sheet moves to the second position, the metal sheet is spaced apart from the first microwave outlet, and the adjusting member is in the second state.

[0019] In the technical solution, the adjusting member includes a metal sheet and a driving structure. The metal sheet is arranged at the first microwave outlet, and the relative positions between the metal sheet and the first microwave outlet can be changed. When the metal sheet is in the first position, the metal sheet is attached to the first microwave outlet, and the metal sheet forms a short circuit or an off state at the first microwave outlet. The microwaves cannot pass through the first microwave outlet and can only enter the cavity through the second microwave outlet. When the metal sheet moves to the second position, there is a gap of a certain length between the metal sheet and the first microwave outlet, so that the microwaves can pass through the first microwave outlet smoothly. At this time, the microwaves pass through the first microwave outlet and the second microwave outlet for feeding.

[0020] In some technical solutions, the driving structure includes a push rod and a driving source. One end of the push rod is connected to the metal sheet, and the other end of the push rod is connected to the driving source. The driving source is configured to drive the push rod to move, so that the metal sheet moves to the first position or the second position.

[0021] In the technical solution, the driving structure includes a push rod and a driving source. The two ends of the push rod are connected to the metal sheet and the driving source, respectively. Under the action of the driving source, the push rod can effectively drive the metal sheet to move, thereby controlling the output path of the microwaves and affecting the heating mode in the microwave oven.

[0022] Further, the driving source is an electromagnetic valve, which can be controlled by the mainboard program, and when powered on, the electromagnetic attraction can be used to push the push rod to move forward by 10mm, so that the metal sheet is away from the first microwave outlet, which is equivalent to the opening of the first microwave outlet, and at this time, the microwave can enter the cavity from the first microwave outlet and the second microwave outlet.

[0023] In some embodiments, the first microwave outlet is in the form of a strip, and a projection of the adjusting member on a plane in which the first microwave outlet is located is located in a range of 35% to 65% of the first microwave outlet in the first direction.

[0024] In this embodiment, by limiting the strip-shaped first microwave outlet and setting the adjusting member in the range of 35% to 65% of the first microwave outlet in the first direction, when the adjusting member is in the first state, a blockage, specifically a short circuit, is formed in the adjusting member, thereby preventing the microwave from passing through the first microwave outlet, and when the adjusting member is in the second state, the microwave is allowed to pass through the entire strip-shaped outlet, i.e., the microwave can be fed in through the first microwave outlet and the second microwave outlet.

[0025] It can be understood that in the first state, the first microwave outlet is divided into two small slits with smaller width, and according to the waveguide cutoff wavelength theory, the smaller the slit, the higher the microwave frequency that can pass through, specifically, the first microwave outlet forms two 40mm small slits in the first state, and the lowest frequency microwave fc≥3.75GHz, so that the two slit openings cannot pass through 2.45GHz microwave after short circuit, and the microwave can only be fed in through the second microwave outlet.

[0026] In some embodiments, the first microwave outlet is in the form of a rectangular hole, the first microwave outlet includes a first direction and a second direction perpendicular to each other, the size of the first microwave outlet in the first direction is 60mm to 140mm, and the size of the first microwave outlet in the second direction is not less than 10mm.

[0027] In this embodiment, the first microwave outlet is designed in the form of a rectangular hole, which helps to more accurately control the propagation direction and energy distribution of the microwave. The size of the first microwave outlet is limited, specifically, the size of the first microwave outlet in the first direction is 60mm to 140mm, so as to cut off the microwave of the first microwave outlet when the adjusting member is in the first state, and in addition, the size in the second direction is not less than 10mm, thereby meeting the requirements of microwave transmission and safety.

[0028] The adjusting member is located in the middle of the first microwave outlet and can control the microwave propagation path by closing or disconnecting. By changing the dimension in the first direction, the radiation angle and coverage range of the microwave can be adjusted, affecting the heating mode. The dimension in the second direction is not less than 10 mm, thus ensuring the effective transmission of the microwave and avoiding risks such as air breakdown.

[0029] Furthermore, the dimension of the first microwave outlet in the first direction is 67 mm to 130 mm.

[0030] In some technical solutions, optionally, the first microwave outlet includes a first direction and a second direction that are perpendicular to each other. When the adjusting member is in the first state, the first microwave outlet is divided into multiple sub-ports by the adjusting member, and the dimension of each sub-port in the first direction is not greater than 40 mm.

[0031] In this technical solution, when the adjusting member is in the first state, the first microwave outlet will be divided into multiple small openings, that is, sub-ports. By restricting the opening dimension of each sub-port, restricting its dimension in the first direction to be less than or equal to 40 mm, the microwave of 2.45 GHz cannot pass through this opening, so that the microwave can only pass through the second microwave outlet.

[0032] In some technical solutions, optionally, the shapes of the first microwave outlet and the second microwave outlet are different.

[0033] In this technical solution, by designing different shapes for the first microwave outlet and the second microwave outlet, more flexibility and adaptability can be provided for the microwave oven to meet the heating needs of different users. Specifically, since the shapes of the two microwave outlets are different, it will affect the radiation mode and coverage area of the microwave. For example, a rectangular outlet may generate a more concentrated microwave beam, while a circular outlet may cause the microwave to spread more evenly. In addition, outlets with different shapes will generate different electromagnetic field distributions inside the microwave oven cavity, thus affecting the uniformity of food heating.

[0034] An embodiment of the second aspect of the present application provides a cooking device, including: a box body, a cooking cavity is provided inside the box body; a microwave generating component, which is provided inside the box body and is used to generate microwaves fed into the cooking cavity.

[0035] According to the cooking device provided by the present application, including a box body and a microwave generating component, the box body is the outer shell of the microwave oven, usually made of metal, to protect users from microwave radiation and provide a structure to accommodate internal components. The cooking cavity is located inside the box body and is the space in the microwave oven for placing food for heating. It is usually metal, which helps with the reflection and distribution of microwaves.

[0036] Since the cooking equipment includes any of the aforementioned microwave generating components, it has the beneficial effects of any of the aforementioned microwave generating components, which will not be elaborated further here.

[0037] In some technical solutions, optionally, the microwave generating component has multiple waveguides, which are disposed on at least two walls of the cooking cavity.

[0038] In this technical solution, multiple waveguides are positioned at different locations on two or more walls of the cooking cavity. By placing the waveguides on different walls, microwave energy can be distributed more effectively, preventing some areas from overheating while others are underheated. Multiple waveguides can send microwaves to different areas of the cooking cavity, helping to reduce hot and cold spots and thus improving heating uniformity. The design of multiple waveguides provides greater flexibility, allowing the microwave output to be adjusted according to different types of food and cooking needs.

[0039] Additional aspects and advantages of the invention will become apparent in the following description or may be learned by practice of the invention. Attached Figure Description

[0040] Figure 1 A schematic diagram of a microwave generating assembly according to an embodiment of the present invention is shown;

[0041] Figure 2 A schematic diagram of a waveguide according to an embodiment of the present invention is shown;

[0042] Figure 3 A schematic diagram of a waveguide according to an embodiment of the present invention is shown;

[0043] Figure 4 A schematic diagram of a control circuit according to an embodiment of the present invention is shown;

[0044] Figure 5 A schematic diagram of the structure of a cooking apparatus according to an embodiment of the present invention is shown;

[0045] Figure 6 A schematic diagram of the structure of a cooking apparatus according to an embodiment of the present invention is shown;

[0046] Figure 7 A schematic diagram of the distribution of the microwave thermal field in a first state is shown, according to an embodiment of the present invention.

[0047] Figure 8 A schematic diagram of the distribution of the microwave thermal field when the adjusting member is in a second state according to an embodiment of the present invention is shown;

[0048] Figure 9A schematic diagram of the structure of a cooking apparatus according to an embodiment of the present invention is shown;

[0049] Figure 10 A schematic diagram of the structure of a cooking apparatus according to an embodiment of the present invention is shown;

[0050] Figure 11 A schematic diagram showing the current and voltage characteristics of a diode is provided.

[0051] Figure 12 A schematic diagram of the structure of a cooking apparatus according to an embodiment of the present invention is shown;

[0052] Figure 13 A diagram of a reconfigurable waveguide structure for a diode is shown.

[0053] Figure 14 The diagram shows the waveform signals of a diode being controlled to be turned on and off.

[0054] in, Figures 1 to 14 The correspondence between the reference numerals and component names in the attached drawings is as follows:

[0055] 100: Microwave generating assembly; 102: Magnetron; 104: Waveguide; 1042: First microwave outlet; 1043: Sub-port; 1044: Second microwave outlet; 106: Adjustment component; 108: Control circuit; 1102: Metal sheet; 1104: Drive structure; 1106: Push rod; 1108: Drive source;

[0056] 200: Cooking equipment; 202: Cabinet; 2022: Cooking cavity. Detailed Implementation

[0057] To better understand the above-described objectives, features, and advantages of the embodiments of the present invention, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0058] Many specific details are set forth in the following description in order to provide a full understanding of this application. However, embodiments of the invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of this application is not limited to the specific embodiments disclosed below.

[0059] The following reference Figures 1 to 14 Some embodiments of the present invention are described.

[0060] like Figure 1As shown, the microwave generating component 100 proposed in this embodiment can switch the microwave output path using the adjusting element 106 on the waveguide 104, thereby changing the electromagnetic field distribution within the microwave oven cavity and achieving a more uniform heating effect. It can be understood that compared to traditional stirring motor systems, this solution uses a simple adjusting element 106, and the microwave path can be controlled simply by switching the state of the adjusting element 106 itself, reducing mechanical parts and lowering costs and maintenance difficulty. Furthermore, by precisely controlling the microwave output, energy waste can be reduced, improving the energy efficiency of the microwave oven.

[0061] Specifically, the microwave generating assembly 100 includes a magnetron 102, a waveguide 104, and an adjustment component 106. The magnetron 102 generates microwave energy and is the core of the entire microwave generating assembly 100, providing the necessary energy source for the heating process. The waveguide 104 transmits the microwaves generated by the magnetron 102 to the microwave oven cavity, ensuring efficient microwave energy transmission and reducing energy loss. Two outlets are provided on the waveguide 104, such as... Figure 2 As shown, the first microwave outlet 1042 and the second microwave outlet 1044 serve as channels for microwave energy to enter the microwave oven cavity. By controlling the on / off state of these two outlets, the propagation path of microwaves within the cavity can be altered. For example... Figure 3 As shown, an adjustment element 106 is provided at the first microwave outlet 1042, which can control whether microwaves are fed in through the first microwave outlet 1042. Specifically, in the first state, microwaves only pass through the second microwave outlet 1044 to form a single heating area. In the second state, microwaves pass through both the first microwave outlet 1042 and the second microwave outlet 1044 to form a more complex electromagnetic field distribution and improve heating uniformity.

[0062] This application utilizes an adjustment member 106 located at the first microwave outlet 1042. By changing the state of the adjustment member 106 itself, the microwave feed path can be adjusted, thereby improving heating uniformity while occupying a small space.

[0063] In some embodiments, optionally, such as Figure 13 As shown, the regulating element 106 is selected as a diode 1062, as those skilled in the art will understand. Figure 11 As shown, when the forward voltage received by diode 1062 reaches V BR For example, at 3.3V, it will conduct, and the circuit current will increase. Conversely, when the voltage is reversed, the diode 1062 will be open, and the current cannot flow.

[0064] The switching of diode 1062 between conduction and cutoff can be achieved through methods such as... Figure 14 The square signal waveform shown is implemented.

[0065] In the ON state, diode 1062 is equivalent to a closed circuit, effectively short-circuiting the intermediate metal of the first microwave outlet 1042, thus preventing microwaves from passing through it. Therefore, microwaves can only enter the microwave oven cavity through the second microwave outlet 1044. When diode 1062 does not receive a forward voltage or receives a reverse voltage, it will be in the OFF state. In this state, diode 1062 is equivalent to an open circuit, allowing microwaves to pass through both the first microwave outlet 1042 and the second microwave outlet 1044 simultaneously.

[0066] By controlling the on / off state of diode 1062, the output path of microwaves can be changed, thereby affecting the electromagnetic field distribution inside the cavity.

[0067] The on / off state of diode 1062 can be controlled by a specific circuit, or by a set program or hardware structure.

[0068] It should be added that, such as Figure 4 As shown, a control circuit 108 is configured and connected in series with a diode 1062. This control circuit 108 can control the conduction and cutoff states of the diode 1062. The control circuit 108 can receive commands from a user interface or an automatic control system. Based on the received commands, the control circuit 108 sends a corresponding voltage signal to the diode 1062 connected in series. Ultimately, the control circuit 108 ensures that the diode 1062 is either turned on (receiving forward voltage) or cut off (no voltage or receiving reverse voltage) when needed.

[0069] The on / off state of diode 1062 determines the propagation path of microwaves, thereby affecting the heating mode inside the microwave oven. Diode 1062 can quickly switch states according to the signal from control circuit 108 to achieve dynamic adjustment of the microwave output path.

[0070] In one specific embodiment, the user sets heating parameters or selects an automatic mode via a user interface. The control circuit 108 determines the microwave output path based on the user settings or an automatic control algorithm. The control circuit 108 sends a forward or reverse voltage signal to the diode 1062. The diode 1062 turns on or off according to the received signal.

[0071] In some embodiments, the regulating member 106 optionally employs a switch structure, controlling the microwave output path by switching between a closed state and an open state, thereby affecting the heating mode within the microwave oven. Specifically, when the switch structure is in the closed state, it is equivalent to forming a short circuit or cutoff state at the first microwave outlet 1042, preventing microwaves from passing through the first microwave outlet and allowing them to enter the cavity only through the second microwave outlet 1044. When the switch structure is in the open state, both the first microwave outlet 1042 and the second microwave outlet 1044 are open to microwaves, allowing microwaves to enter the cavity simultaneously through both outlets, thereby altering the electromagnetic field distribution within the cavity and improving the uniformity of heating.

[0072] Furthermore, the switching structure can be a traditional switch, or a linear motor, a phase change metal material (conducting at 60°C), or other small displacement devices that can switch between open and short circuit states.

[0073] Furthermore, such as Figure 9 As shown, the switch structure can be a metal sheet 1102 and a driving structure 1104. The metal sheet 1102 is disposed at the first microwave outlet 1042, and the relative position between the metal sheet 1102 and the first microwave outlet 1042 can change, such as... Figure 10 As shown, when the metal plate 1102 is in the first position, it is attached to the first microwave outlet 1042. At this time, the metal plate 1102 effectively forms a short circuit or cutoff state at the first microwave outlet 1042, preventing microwaves from passing through and allowing them to enter the cavity only through the second microwave outlet 1044. When the metal plate 1102 moves to the second position, a certain length of gap exists between it and the first microwave outlet 1042, allowing microwaves to pass smoothly through the first microwave outlet 1042. At this time, microwaves are fed in through both the first and second microwave outlets 1042 and 1044.

[0074] The drive structure 1104 includes a push rod 1106 and a drive source 1108. The two ends of the push rod 1106 are connected to the metal plate 1102 and the drive source 1108, respectively. Under the action of the drive source 1108, the push rod 1106 can be effectively driven to move the metal plate 1102, thereby controlling the output path of the microwave and thus affecting the heating mode inside the microwave oven.

[0075] Furthermore, the driving source 1108 is a solenoid valve, which can be controlled by the motherboard program. When powered on, it can use electromagnetic attraction to push the push rod 1106 forward by 10mm, thereby moving the metal plate 1102 away from the first microwave outlet 1042, which is equivalent to opening the first microwave outlet 1042. At this time, microwaves can enter the cavity from the first microwave outlet 1042 and the second microwave outlet 1044.

[0076] In one specific embodiment, a strip-shaped first microwave outlet is restricted, and an adjustment member is disposed in a first direction at 35% to 65% of the first microwave outlet. When the adjustment member is in a first state, it forms a blockage, specifically a short circuit, thereby preventing microwaves from passing through the first microwave outlet 1042. When the adjustment member 106 is in a second state, microwaves are allowed to pass through the entire strip-shaped outlet, that is, microwaves can be fed in through the first microwave outlet 1042 and the second microwave outlet 1044.

[0077] Furthermore, the first microwave outlet 1042 is restricted in a strip shape, and the adjusting member 106 is positioned in the middle of the first microwave outlet 1042. When the adjusting member 106 is in the first state, a blockage is formed in the middle of the strip-shaped outlet.

[0078] When the adjustment component is in the first state, the first microwave outlet 1042 is divided into multiple small openings, namely sub-ports 1043. By limiting the size of each sub-port 1043, its size in the first direction is limited to less than or equal to 40mm, so that 2.45GHz microwaves cannot pass through the opening, thus allowing microwaves to pass only through the second microwave outlet.

[0079] Understandably, in the first state, the first microwave outlet 1042 will split into two smaller slits. According to the waveguide cutoff wavelength theory, the smaller the slit, the higher the microwave frequency that can pass through. Specifically, in the first state, the first microwave outlet 1042 will form two 40mm slits, through which the lowest frequency microwave fc ≥ 3.75GHz can pass. Therefore, after short-circuiting, the two slit openings cannot pass through 2.45GHz microwaves, and the microwave can only be fed in through the second microwave outlet 1044.

[0080] In another specific embodiment, the first microwave outlet 1042 adopts a rectangular aperture design, which helps to more accurately control the propagation direction and energy distribution of microwaves. The dimensions of the first microwave outlet 1042 are defined; specifically, the dimension of the first microwave outlet 1042 in the first direction is 60mm to 140mm, so as to cut off the microwaves from the first microwave outlet 1042 when the adjusting member 106 is in the first state. Furthermore, the dimension in the second direction is not less than 10mm, thereby meeting microwave transmission and safety requirements.

[0081] The adjusting element 106 is located in the middle of the first microwave outlet 1042 and can control the microwave propagation path by closing or opening it. By changing the dimension in the first direction, the radiation angle and coverage of the microwave can be adjusted, affecting the heating mode. The dimension in the second direction is not less than 10mm, thereby ensuring that the microwave can be transmitted effectively and avoiding risks such as air breakdown.

[0082] Furthermore, the first microwave outlet 1042 has a dimension of 67mm to 130mm in the first direction.

[0083] like Figure 7 and Figure 8 As shown, Figure 7 The microwave thermal field distribution diagram is shown when the adjustment element is in the first state. Figure 8 The diagram shows the microwave thermal field distribution when the adjustment element is in its second state. The shades of color in the diagram are related to temperature; generally, darker colors indicate higher temperatures. Figure 7 and Figure 8 It can be seen that, as Figure 7 As shown, when diode 1062 is in the conducting state, the area slightly to the left of the center is hotter, while the area at the lower right corner is relatively cooler. Figure 8 As shown, when diode 1062 is in the off state, the left side is relatively hot and the lower right corner is also relatively hot, which complements the hot and cold hot spots of the previous state shape, which is beneficial to improving uniformity.

[0084] In one specific embodiment, optionally, different shapes can be designed for the first microwave outlet 1042 and the second microwave outlet 1044, providing the microwave oven with greater flexibility and adaptability to meet the heating needs of different users. Specifically, since the two microwave outlets have different shapes, it will affect the microwave radiation pattern and coverage area. For example, a rectangular outlet may produce a more concentrated microwave beam, while a circular outlet may result in more uniform microwave diffusion. In addition, outlets of different shapes will generate different electromagnetic field distributions inside the microwave oven cavity, thereby affecting the uniformity of food heating.

[0085] This application provides another embodiment of a cooking device 200, such as... Figure 5 and Figure 12 As shown, the cooking appliance 200 includes a housing 202 and a microwave generating assembly 100. The housing 202 is the outer shell of the microwave oven, typically made of metal, used to protect the user from microwave radiation and providing a structure to house the internal components. Figure 6 As shown, the cooking cavity 2022 is located inside the enclosure 202 and is the space in the microwave oven used to place food for heating. It is usually made of metal to help reflect and distribute microwaves.

[0086] Among them, cooking equipment 200 includes microwave ovens, microwave ovens, microwave-steam-grill combos, and other similar equipment.

[0087] In some embodiments, optionally, multiple waveguides 104 are provided at different locations. These waveguides 104 are disposed on two or more walls of the cooking cavity 2022. By distributing the waveguides 104 on different walls, microwave energy can be distributed more effectively, preventing some areas from overheating while others are underheated. Multiple waveguides 104 can send microwaves to different areas of the cooking cavity 2022, helping to reduce hot and cold spots and thus improving heating uniformity. The design of multiple waveguides 104 provides greater flexibility, allowing the microwave output to be adjusted according to different types of food and cooking needs.

[0088] In one specific embodiment, a microwave oven is proposed, comprising a housing 202. The housing 202 has a feed port connected to a waveguide port. Two slits (i.e., a first microwave outlet 1042 and a second microwave outlet 1044) are opened on the surface of the feed port to ensure that the microwave output and energy efficiency are qualified. At the first slit (i.e., the first microwave outlet 1042), a voltage-resistant diode structure (i.e., an adjustment component 106) is added. This diode can be controlled by a computer board signal to turn on and off. When a forward voltage of 3.3V is applied, the diode conducts, which is equivalent to a short circuit in the middle of the first slit. According to the microwave transmission principle, the wavelength of 2.45GHz microwave is 12cm. After the short circuit, the first waveguide port is separated into two small slits with a width of 40mm. According to the waveguide cutoff wavelength theory, the lowest frequency microwave fc ≥ 3.75GHz can pass through the two 40mm small slits. Therefore, after the short circuit, the two slits cannot pass through the 2.45GHz microwave. At this time, the microwave is fed into the cavity from the second slit, thereby achieving the purpose of microwave control.

[0089] By controlling the diode's on / off state through a square wave signal circuit, complementary superposition of microwave field strengths is achieved, ultimately resulting in uniform heating. Compared to traditional stirring motor methods, this reduces the space at the bottom of the cavity and mitigates factors such as poor mechanical structure reliability and wear. Uniform heating is achieved by electrically regulating the microwaves. A waveguide 104 is mounted on the cavity, and a magnetron 102 is mounted on it. The outlet of the waveguide 104 is located on the metal surface on the right side of the cavity. The waveguide has two or more microwave outlets. A 2000V high-voltage diode switch is mounted in the middle of one of the outlets. This switch can control the diode's on / off state by different signals from the control circuit 108. When the diode is on, the metal in the middle of the microwave oven's first microwave outlet is short-circuited, creating a cutoff state, allowing microwave energy to pass only through other outlets. When the diode is off, the first microwave outlet opens, allowing microwaves to enter the cavity from the first and second microwave outlets. This changes the electromagnetic field distribution within the cavity. By controlling the diode's on / off state, microwave uniformity is adjusted.

[0090] The core parameters are as follows: the width of the first microwave outlet is 67mm≤W≤130mm, there is no requirement for the outlet height, but according to the microwave air breakdown voltage technology under normal atmospheric pressure, the outlet height must be greater than or equal to 10mm, and the diode must be placed in the middle of the opening gap symmetrically so as to ensure that the 2.45GHz microwave is in the cut-off state when the diode is conducting.

[0091] In addition, a microwave oven can have two or more waveguide vents and can be equipped with multiple diodes to control the microwave field intensity through no-load switching.

[0092] According to the microwave generating assembly provided by the present invention, the output path of the microwave is switched by the adjustment component, thereby changing the electromagnetic field distribution in the microwave oven cavity and achieving a more uniform heating effect.

[0093] In this invention, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; the term "multiple" refers to two or more unless otherwise explicitly defined. The terms "install," "connect," "link," and "fix" should be interpreted broadly. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "link" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0094] In the description of this invention, it should be understood that the terms "upper," "lower," "left," "right," "front," "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or unit referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0095] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0096] The above are merely preferred embodiments of the present invention and are not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A microwave generating component, characterized in that, include: A magnetron used to generate microwaves; At least one waveguide is connected to the magnetron, and the microwaves generated by the magnetron pass through the waveguide. The waveguide is provided with at least one first microwave outlet and at least one second microwave outlet, and the first microwave outlet is provided with an adjustment element with a variable on / off state. In one state, the adjusting member is in a first state and the microwave passes through the second microwave outlet; in another state, the adjusting member is in a second state and the microwave passes through both the first microwave outlet and the second microwave outlet.

2. The microwave generating assembly according to claim 1, characterized in that, The regulating element is a diode. When the diode is in the on state, the microwave passes through the second microwave outlet. When the diode is in the off state, the microwave passes through both the first microwave outlet and the second microwave outlet.

3. The microwave generating assembly according to claim 2, characterized in that, Also includes: A control circuit is provided, wherein the diode is connected in series in the control circuit, and the control circuit is used to control the conduction and cutoff of the diode.

4. The microwave generating assembly according to claim 1, characterized in that, The adjusting element includes: A metal sheet is disposed at the first microwave outlet; A driving structure is connected to the metal sheet in a transmission manner, and the driving structure is used to drive the metal sheet to move to a first position or to move to a second position; In this configuration, the metal sheet moves to the first position, where it contacts the first microwave outlet, and the adjusting member is in the first state. Then, the metal sheet moves to the second position, where it is spaced apart from the first microwave outlet, and the adjusting member is in the second state.

5. The microwave generating assembly according to claim 4, characterized in that, The driving structure includes: A push rod, one end of which is connected to the metal sheet; A drive source is connected to the other end of the push rod, and the drive source is used to drive the push rod to move so that the metal piece moves to the first position or the second position.

6. The microwave generating assembly according to claim 1, characterized in that, The first microwave outlet is strip-shaped, and the projection of the adjusting member onto the plane where the first microwave outlet is located is within 35% to 65% of the first microwave outlet in the first direction.

7. The microwave generating assembly according to claim 6, characterized in that, The first microwave outlet is a rectangular hole. The first microwave outlet includes a first direction and a second direction that are perpendicular to each other. The size of the first microwave outlet in the first direction is 60mm to 140mm, and the size of the first microwave outlet in the second direction is not less than 10mm.

8. The microwave generating assembly according to claim 1, characterized in that, The first microwave outlet includes a first direction and a second direction that are perpendicular to each other. The adjusting member is in the first state. The first microwave outlet is divided into multiple sub-ports by the adjusting member. The size of each sub-port in the first direction is no greater than 40 mm.

9. The microwave generating assembly according to claim 1, characterized in that, The first microwave outlet and the second microwave outlet have different shapes.

10. A cooking device, characterized in that, include: The box body, wherein a cooking cavity is provided inside the box body; The microwave generating assembly as described in any one of claims 1 to 9 is disposed within the housing, and the microwave generating assembly is used to generate microwaves fed into the cooking cavity.

11. The cooking apparatus according to claim 10, characterized in that, The microwave generating component has multiple waveguides, which are disposed on at least two walls of the cooking cavity.

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