RU2778450C1 - Heating apparatus - Google Patents

Abstract

FIELD: heating.

SUBSTANCE: disclosed is a heating apparatus (100) including a cylindrical body (110) containing a loading and placement hole, a door frame (120) configured to open and close the loading and placement hole, and an electromagnetic wave generation system. At least part of the electromagnetic wave generation system is located in the cylindrical body (110) or is accessible in the cylindrical body (110) to generate electromagnetic waves in the cylindrical body (110) for heating the object subject to processing. The heating apparatus (100) additionally comprises plastic elements (130, 140) located in the path of propagation of electromagnetic waves, wherein the plastic elements comprise a container for supporting the object, configured to support the object subject to processing. The plastic elements (130, 140) are made of an opaque PP material in order to reduce the electromagnetic losses of electromagnetic waves on the plastic elements (130, 140) to indirectly increase the ratio of electromagnetic waves acting on the object subject to processing, thereby increasing the rate of heating the object subject to processing.

EFFECT: ensured heating by means of a new apparatus.

9 cl, 7 dwg

Description

The field of technology to which the invention belongs

The present invention relates to kitchen appliances, and specifically relates to a heating device using electromagnetic waves.

Background of the invention

The food freezing process preserves food quality, but frozen food must be thawed before being processed or eaten. In the prior art, food products are typically defrosted by a device using electromagnetic waves (such as a microwave oven).

In order to achieve cleaning of the device using electromagnetic waves, object holding containers such as trays are usually placed in the food holding heating chamber, but the ability of the object holding containers to absorb electromagnetic waves will indirectly affect the effectiveness of food defrosting. If the object support containers have a greater ability to absorb electromagnetic waves, the food will be exposed to less electromagnetic waves and the defrosting efficiency of the food will be lower. If the object holding containers have less ability to absorb electromagnetic waves, the food products will be exposed to more electromagnetic waves, and the defrosting efficiency of the food will be higher.

Brief description of the invention

It is an object of the present invention to provide an electromagnetic wave heating device in view of the above disadvantages in the prior art, wherein the plastic elements in the electromagnetic wave heating device have a relatively lower ability to absorb electromagnetic waves.

Another object of the present invention is to improve the assembly efficiency of the heating device.

Another object of the present invention is to improve the heating efficiency.

Specifically, the present invention describes a heating device including

a cylindrical body containing a hole for loading and placement;

a door body located on the loading and placing opening and configured to open and close the loading and placing opening; and

an electromagnetic wave generation system, at least a part of which is located in a cylindrical housing or is accessible in a cylindrical housing for generating electromagnetic waves in a cylindrical housing for heating an object to be processed, and the heating device further includes

plastic elements located in the path of propagation of electromagnetic waves and made of opaque PP material to reduce the amount of absorption of electromagnetic waves by plastic elements.

Optionally, plastic elements include

an object holding container configured to hold the object to be processed.

Optionally, the opening for loading and placement is formed in the front side wall of the cylindrical body; and

the object holding container is a front-to-back sliding drawer with an upward opening for convenient loading and placement of the object to be processed.

Optionally, the electromagnetic wave generation system includes

an electromagnetic wave generation module configured to generate an electromagnetic wave signal; and

a radiating antenna located in the cylindrical body and electrically connected to the electromagnetic wave generation module to generate electromagnetic waves of the appropriate frequency in the cylindrical body in accordance with the electromagnetic wave signal.

Optionally, plastic elements include

an antenna body configured to divide the interior of the cylindrical body into a heating chamber and an electrical appliance compartment, wherein the object to be processed and the radiating antenna are respectively located in the heating chamber and the electrical appliance compartment.

Optionally, the antenna housing is located at the bottom of the cylindrical housing, and the radiating antenna is horizontally fixed on the bottom surface of the antenna housing.

Optionally, the radiating antenna is located at a height of 1/3-1/2 of the cylindrical body.

Optionally, the radiating antenna includes a plurality of engagement holes; and

the antenna housing respectively comprises a plurality of brackets, and the plurality of brackets are configured to respectively pass through the plurality of engagement holes for engagement with the radiating antenna, wherein

each of the brackets consists of two notches located at a distance from each other and in mirror symmetry; or

each of the brackets consists of a fixing part perpendicular to the radiating antenna and having a hollow middle part, and an elastic part passing at an angle to the fixing part from the inner end edge of the fixing part to the radiating antenna.

Optionally, the heating device additionally includes

a signal processing, measurement and control circuit configured to be electrically connected to the electromagnetic wave generation module and located in the electrical appliance compartment on the rear side of the radiating antenna.

Optionally, the circuit for processing, measuring and controlling signals includes

a detection unit connected in series between the electromagnetic wave generation unit and the radiating antenna, and configured to detect specific parameters of the incident wave signal and the reflected wave signal passing through the detection unit;

a control unit configured to calculate the absorption rate of electromagnetic waves of the object to be processed, in accordance with specific parameters; and

a matching unit connected in series between the electromagnetic wave generation module and the radiating antenna and configured to adjust the load resistance of the electromagnetic wave generation module in accordance with the electromagnetic wave absorption rate.

Since the plastic elements in the heating device of the present invention are made of PP opaque material, the amount of absorption of electromagnetic waves by the plastic elements is reduced, and the ratio of electromagnetic waves acting on the object to be processed is indirectly increased, thereby improving the heating efficiency of the heating device.

Specifically, the inventor of the present application uses an opaque material to make plastic elements in a cylindrical body, thus overcoming the technical disadvantages of the prior art. For many years, it was believed by those skilled in the art that only plastic elements made of transparent materials would reduce the amount of absorption of electromagnetic waves by containers to support objects, which is only confirmed by the fact that all existing microwave ovens use transparent trays, transparent turntables etc., to maintain the objects to be processed.

In addition, the radiating antenna is covered and fixed with the antenna body in the heating device of the present invention, which not only can separate the object to be processed from the radiating antenna to prevent pollution or damage to the radiating antenna by accidental touching, but also can simplify the process of assembling the heating device to ensuring the location and installation of the radiating antenna.

In addition, in the present invention, the antenna body is located at a height of 1/3-1/2 of the cylindrical body, which not only can prevent damage to the antenna body and the radiating antenna due to the fact that the user places the object to be processed at a high height, but also can to cause the electromagnetic waves in the heating chamber to have a relatively high energy density, so that the object to be processed is quickly heated.

In addition, in the present invention, the load resistance of the electromagnetic wave generation unit is adjusted by the matching unit to increase the degree of correspondence between the output impedance and the load resistance of the electromagnetic wave generation unit, so that when foodstuffs with different fixed characteristics (such as type, weight, and volume) are placed in the heating chamber or when the food temperature changes, relatively more electromagnetic wave energy is emitted in the heating chamber.

In accordance with the following detailed descriptions of specific embodiments of the present invention in conjunction with the drawings, experts in the art will more clearly understand the above and other objects, advantages and features of the present invention.

Brief description of the drawings

Some specific embodiments of the present invention are described in detail below with reference to the drawings by way of example and not limitation. The same reference numbers throughout the drawings designate the same or similar elements or parts. Those skilled in the art will appreciate that these drawings are not necessarily drawn to scale. On the drawings

Fig. 1 is a schematic structural view of a heating device according to one embodiment of the present invention;

Fig. 2 is a schematic sectional view of the heating device as shown in Fig. 1, in which the electromagnetic wave generating unit and the power supply are omitted;

Fig. 3 is a schematic enlarged view of region A in Fig. 2;

4 is a schematic structural view of an appliance compartment according to one embodiment of the present invention;

Fig. 5 is a schematic enlarged view of region B in Fig. 4;

Fig. 6 is a schematic structural view of an electrical appliance compartment according to another embodiment of the present invention;

Fig. 7 is a schematic enlarged view of region C in Fig. 6.

Detailed description of the invention

FIG. 1 is a schematic structural view of a heating device 100 according to one embodiment of the present invention; FIG. 2 is a schematic sectional view of a heating device 100 as shown in FIG. . As shown in FIGS. 1 and 2, the heating device 100 may include a cylindrical body 110, a door body 120, an electromagnetic wave generation module, a power supply 162, and a radiating antenna 150.

The cylindrical body 110 may be configured to receive an object to be processed, and the front wall or top wall of the cylindrical body may include a loading and stowage opening for loading and accommodating the object to be processed. The door body 120 can be mounted together with the cylindrical body 110 in an appropriate manner such as sliding rail connection, hinge connection, etc., and is configured to open and close the loading and placement opening.

In some embodiments, barrel body 110 and door body 120 may respectively comprise electromagnetic shielding features such that door body 120 is conductively connected to barrel body 110 when the door body is in the closed position to prevent electromagnetic waves from leaking out.

The power supply unit 162 may be electrically connected to the electromagnetic wave generation unit 161 to supply electric power to the electromagnetic wave generation unit 161 so that the electromagnetic wave generation unit 161 generates electromagnetic wave signals. The radiating antenna 150 may be located in the cylindrical body 110 and electrically connected to the electromagnetic wave generation module 161 to generate electromagnetic waves of appropriate frequencies in accordance with the electromagnetic wave signals to heat the object to be processed in the cylindrical body 110.

In some embodiments, cylindrical housing 110 may be made of metals for use as a receiving contact for receiving electromagnetic waves generated by emitting antenna 150. receiving electromagnetic waves generated by the radiating antenna 150.

4 is a schematic structural view of an appliance compartment 112 in accordance with one embodiment of the present invention. 6 is a schematic structural view of an appliance compartment 112 according to another embodiment of the present invention. As shown in FIGS. 4 and 6, the peripheral edge of the radiating antenna 150 can be formed with smooth curves to realize a more even distribution of electromagnetic waves in the cylindrical body 110, thereby improving the temperature uniformity of the object to be treated. A smooth curve refers to a curve in which the first derivative of the equation of the curve is continuous, which means that the peripheral edge of the radiating antenna 150 does not have a sharp corner when constructed.

As shown in FIGS. 2 and 4, the heating device 100 may further include an antenna case 130 for separating the interior of the cylindrical body 110 into a heating chamber 111 and an electrical appliance compartment 112. The object to be processed and the radiating antenna 150 may be respectively disposed in the heating chamber 111 and the appliance compartment 112 to separate the object to be processed from the radiating antenna 150 to prevent contamination or damage to the radiating antenna 150 due to accidental touching.

In some embodiments, antenna housing 130 may be made of insulating plastic such that electromagnetic waves generated by radiating antenna 150 may pass through antenna housing 130 to heat the object to be treated.

In some embodiments, the antenna housing 130 may be located at the bottom of the cylindrical housing 110 to prevent damage to the antenna housing 130 and the emitting antenna 150 due to the user placing the object to be processed at a high height.

The radiating antenna 150 may be positioned horizontally at a height of 1/3-1/2, such as 1/3, 2/5, or 1/2 of the cylindrical body 110, so that the volume of the heating chamber 111 is relatively large, and the electromagnetic waves in heating chamber 111 have a relatively high energy density to effect rapid heating of the object to be treated.

In some embodiments, the implementation of the object to be processed may be directly placed on the body 130 of the antenna.

In some other embodiments, heating device 100 may further include an object support container configured to support an object to be processed. The container for supporting the object may be a tray. When a loading and stowage opening is formed in the front wall of the cylindrical body 110, the object holding container may be a plastic drawer 140 having an upward opening. The two transverse side plates of the drawer 140 can be movably connected to the cylindrical body 110 by sliding rails so that the drawer 140 can slide back and forth to conveniently load and position the object to be processed. The front wall of the drawer 140 may be configured to be rigidly connected to the door body 120.

Specifically, in the present invention, plastic elements such as antenna housing 130 and drawer 140 may be made of opaque (translucent or opaque) PP materials to reduce electromagnetic loss of electromagnetic waves on the plastic elements to indirectly increase the ratio of electromagnetic waves acting on the object to be processed, thus increasing the heating rate of the object to be processed.

For a further understanding of the present invention, preferred solutions for carrying out the present invention are described below in conjunction with more specific embodiments, but the present invention is not limited to these embodiments.

First Embodiment

The heating device includes a cylindrical body, a door body, a drawer, a radiating antenna, an electromagnetic wave generation module, and an antenna housing covering the antenna, and the radiating antenna is located at a height of 1/3 of the cylindrical body, wherein

both the drawer and the antenna housing are made of PP material manufactured by ExxonMobil Corp. with the addition of white concentrate (PP material model is AP3N, and the blended material is opaque and is commonly used to make drawer for refrigerator freezer compartment).

Second Embodiment

The difference from the first embodiment is that both the drawer and the antenna housing are made of PP material manufactured by ExxonMobil Corp. (PP material model is AP3N and the material is translucent).

Comparative Example 1

The difference from the first embodiment is that both the drawer and the antenna housing are made of PTFE material manufactured by Daikin Fluorochemicals Co., Ltd. (material model is M-139 and the material is opaque).

Comparative Example 2

The difference from the first embodiment is that both the drawer and the antenna body are made of a transparent polycarbonate material manufactured by Bayer Co., Ltd. (material model is 2805 and the material is transparent).

Comparative Example 3

The difference from the first embodiment is that both the drawer and the antenna housing are made of a transparent polystyrene material manufactured by BASF AG (material model is 165H and the material is transparent).

Comparative Example 4

The difference from the first embodiment is that both the drawer and the antenna housing are made of a polystyrene material manufactured by BASF AG (material model is 165H and the material is transparent).

Test specifications: edible vegetable oil of the same composition, respectively, placed in the drawers of each embodiment and each comparative example, measure the initial temperature of the edible oil; the electromagnetic wave generation module generates electromagnetic wave signals (40.68 MHz, 100 W) for 5 minutes, and then the final temperature of the edible oil is measured.

The test results according to the first embodiment to the second embodiment and comparative example 1-4 are shown in Table 1-6, respectively. In order to improve the accuracy of testing, two or three samples are respectively placed in the heating devices according to the first embodiment to the second embodiment and comparative example 1-4 for testing.

Table 1

Product under test (PP) Initial temperature (°C) Final temperature (°C) Temperature rise (°C) Sample 1 22.3 34.6 12.3 Sample 2 22.1 34.4 12.3 Mean / / 12.3

table 2

Product under test (PP) Initial temperature (°C) Final temperature (°C) Temperature rise (°C) Sample 1 22.3 34.6 12.3 Sample 2 22.2 34.4 12.2 Sample 3 22.3 34.6 12.3 Mean / / 12.27

Table 3

Test product (polytetrafluoroethylene) Initial temperature (°C) Final temperature (°C) Temperature rise (°C) sample 1 21.8 33.2 11.4 Sample 2 21.9 33.3 11.4 Mean / / 11.4

Table 4

Product under test (PC) Initial temperature (°C) Final temperature (°C) Temperature rise (°C) Sample 1 22.5 32.1 9.6 Sample 2 22.2 32.3 10.1 Sample 3 23.6 33.1 9.5 Mean / / 9.73

Table 5

Test product (PS) Initial temperature (°C) Final temperature (°C) Temperature rise (°C) Sample 1 22 33.9 11.9 Sample 2 22.6 34.8 12.2 Mean / / 12.05

Table 6

Test product (PS +PP) Initial temperature (°C) Final temperature (°C) Temperature rise (°C) Sample 1 22.6 34 11.4 Sample 2 23 33.8 10.8 Sample 3 22.6 33.6 eleven Mean / / 11.07

From the test results shown in Table 1-4, it can be seen that, provided that the heating time is the same, the increment temperature of the edible vegetable oil in the heating device, in which both the drawer and the antenna body are made of a translucent material of PP, and the temperature increment of the edible vegetable oil in the heating device, in which both the drawer and the antenna body are made of an opaque material of PP PTFE are much greater than the temperature increment of edible vegetable oil in a heating device in which both the drawer and the antenna housing are made of transparent polycarbonate material. That is, PP opaque material, PP translucent material, and PTFE opaque material have lower electromagnetic wave absorption capacity than polycarbonate transparent material, and electromagnetic waves have lower electromagnetic wave loss on PP opaque material, PP translucent material, and opaque material. from polytetrafluoroethylene.

From the test results shown in Table 1 and 5-6, it can be seen that, provided that the heating time is the same, there is a small difference between the temperature increment of the edible vegetable oil in the heating device in which both the drawer and the antenna housing are of PP opaque material, by increasing the temperature of the edible vegetable oil in the heating device, in which both the drawer and the antenna body are made of transparent polystyrene material, and by increasing the temperature of the edible vegetable oil in the heating device, in which the drawer and the antenna body are made respectively in transparent polystyrene material and opaque PP material. That is, the PP opaque material and the polystyrene transparent material have similar electromagnetic wave absorption capabilities.

In addition, during the processing of the drawer and the antenna case in Comparative Example 1, since the PTFE opaque material has poor injection molding properties, the manufacturing process of the drawer and the antenna case is complicated and expensive. After testing Comparative Example 3-4, the drawer and the antenna housing, which are made of a transparent polystyrene material, were significantly softened. It has been verified that the softening point of the transparent polystyrene material is about 80°C, that is, the heat resistance of the transparent polystyrene material is low. However, after testing the first embodiment to the second embodiment, both the drawer and the antenna housing have no visual or perceptible softening effect.

Antenna housing 130 may also be configured to mount a radiant antenna 150 to facilitate assembly of the heating device 100 and provide location and installation of the radiant antenna 150. Specifically, the antenna housing 130 may include a sheathing board 131 for separating the heating chamber 111 and compartment 112 for electrical appliance, and the enclosing part 132 rigidly connected to the inner wall of the cylindrical housing 110, and the radiating antenna 150 can be configured to be rigidly connected to the sheathing board 131.

In some embodiments, the implementation of the radiating antenna 150 may be configured to engage with the body 130 of the antenna. Fig. 5 is a schematic enlarged view of region B in Fig. 4. As shown in FIG. 5, the radiating antenna 150 may include a plurality of engagement holes 151, the antenna housing 130 may respectively comprise a plurality of brackets 133, and the plurality of brackets 133 are configured to respectively pass through the plurality of engagement holes 151 to engage with the radiating antenna 150.

In one embodiment of the present invention, each of the staples 133 may consist of two burrs spaced apart and in mirror symmetry.

Fig. 7 is a schematic enlarged view of region C in Fig. 6. As shown in FIG. 7, in another embodiment of the present invention, each of the brackets 133 may be composed of a locking portion perpendicular to the radiating antenna 150 and having a hollow middle portion, and an elastic portion extending at an angle to the locking portion from the inner end edge of the locking portion. to the antenna.

In some other embodiments, radiating antenna 150 may be configured to be secured to antenna housing 130 using a plating process.

The antenna housing 130 may further include a plurality of stiffening ribs, and the stiffening ribs are configured to connect the board 131 and the enclosure 132 to increase the structural strength of the antenna housing 130.

Fig. 3 is a schematic enlarged view of region A in Fig. 2. As shown in FIGS. 1-3, the heating device 100 may further include a signal processing, measurement, and control circuit 170. Specifically, the signal processing, measurement, and control circuit 170 may include a detection unit 171, a control unit 172, and a matching unit 173.

The detection unit 171 may be connected in series between the electromagnetic wave generation unit 161 and the radiating antenna 150, and is configured to detect in real time specific parameters of the incident wave signals and the reflected wave signals passing through the detection unit.

The control unit 172 may be configured to obtain specific parameters from the detection unit 171 and calculate the power of the incident waves and reflected waves in accordance with the specific parameters. In the present invention, the specific parameters may be voltage values and/or current values. Alternatively, the detection unit 171 may be a power meter for directly measuring the power of incident waves and reflected waves.

The control unit 172 may further calculate the electromagnetic wave absorption rate of the object to be processed according to the power of the incident waves and the reflected waves, compare the electromagnetic wave absorption rate with the predetermined absorption threshold, and issue an adjustment command to the matching unit 173 when the electromagnetic wave absorption rate is less than the predetermined absorption threshold. The predetermined absorption threshold may be 60%-80%, such as 60%, 70%, or 80%.

The matching unit 173 may be connected in series between the electromagnetic wave generation unit 161 and the radiating antenna 150, and is configured to adjust the load resistance of the electromagnetic wave generation unit 161 in accordance with the adjustment command of the control unit 172 to improve the degree of matching between the output impedance and the load resistance of the generation unit 161 electromagnetic waves, so that when foodstuffs with different fixed characteristics (such as type, weight, and volume) are placed in the heating chamber 111 or at the time of food temperature change, relatively more electromagnetic wave energy is emitted in the heating chamber 111, thus increasing the speed heating.

In some embodiments, the implementation of the heating device 100 may be used for defrosting. The control unit 172 may also be configured to calculate the rate of change of the imaginary part of the dielectric coefficient of the object to be processed, in accordance with the power of the incident waves and reflected waves, compare the rate of change of the imaginary part with a predetermined change threshold, and issue a stop command to the electromagnetic wave generation module 161 when the rate of change of the imaginary part of the dielectric coefficient of the object to be processed is greater than or equal to the predetermined change threshold, so that the electromagnetic wave generation unit 161 stops and the defrost program is terminated.

A predetermined change threshold can be obtained by testing the rate of change of the imaginary part of the dielectric coefficient of food products with different fixed characteristics at -3°C to 0°C, so that the food products have good shear strength. For example, when the object to be processed is raw beef, the predetermined change threshold may be set to 2.

The control unit 172 may also be configured to receive a user command and control the electromagnetic wave generation module 161 to start operation in accordance with the user's command, the control unit 172 being electrically connected to the power unit 162 to receive electrical power from the power unit 162 and is always in a waiting state.

In some embodiments, signal processing, measurement, and control circuitry 170 may be integral with a printed circuit board and positioned horizontally in appliance compartment 112 to provide an electrical connection between radiating antenna 150 and matching unit.

The antenna body 130 and the cylindrical body 110 may include heat dissipation holes 190, respectively, at positions corresponding to the matching block 173, so that heat generated by the matching block 173 during operation is removed through the heat dissipation holes 190.

In some embodiments, signal processing, measurement, and control circuitry 170 may be located on the rear side of radiating antenna 150. The back of the bottom wall of drawer 140 may be recessed upward to form an enlarged area at its bottom. Holes 190 for heat dissipation may be formed in the rear walls of the antenna housing 130 and the cylindrical housing 110.

In some embodiments, the metal barrel 110 may be configured to be grounded to drain electrical charges from it, thereby improving the safety of the heating device 100.

The heating device 100 may further include a metal bracket 180. The metal bracket 180 may be configured to couple the circuit board and the barrel 110 to support the circuit board and conduct electrical charges from the circuit board through the barrel 110. In some embodiments, the metal bracket 180 may consist of two parts perpendicular to each other.

In some embodiments, the electromagnetic wave generation module 161 and the power supply 162 may be located on the outside of the cylindrical housing 110. A portion of the metal bracket 180 may be located at the rear of the printed circuit board and extend vertically in the transverse direction and may contain two holes for wiring, so that the wiring terminal of the detection unit 171 (or matching unit) comes out of one wiring hole and is electrically connected to the electromagnetic wave generation unit 161, and the wiring clip of the control unit 172 comes out of another wiring hole and is electrically connected to the electromagnetic wave generation unit 161 and the unit 162 nutrition.

In some embodiments, the implementation of the heating device may be located in the storage compartment of the refrigerator to allow users to defrost food.

However, those skilled in the art should understand that while many embodiments of the present invention have been shown and described in detail herein without departing from the spirit and scope of the present invention, many other changes or modifications that are consistent with the principles of the present invention are still can be directly determined or derived from the content disclosed in the present invention. Therefore, the scope of the present invention should be understood and considered as including all these other changes or modifications.

Claims (28)

1. Heating device, containing: a cylindrical body containing a hole for loading and placement; a door body located on the loading and placing opening and configured to open and close the loading and placing opening; and an electromagnetic wave generation system, at least a part of which is located in a cylindrical housing or is accessible in a cylindrical housing for generating electromagnetic waves in a cylindrical housing for heating an object to be processed, characterized in that the heating device further comprises plastic elements located in the path of propagation of electromagnetic waves and made of opaque PP material to reduce the value of absorption of electromagnetic waves by plastic elements, moreover plastic elements contain an object holding container configured to hold the object to be processed. 2. The heating device according to claim 1, in which a loading and placement opening is formed in the front side wall of the cylindrical body; and the container for holding the object is a drawer that is slidable in a back and forth direction and has an upward opening for convenient loading and placement of the object to be processed. 3. The heating device according to claim 1, wherein the electromagnetic wave generation system comprises an electromagnetic wave generation module configured to generate an electromagnetic wave signal; and a radiating antenna located in the cylindrical body and electrically connected to the electromagnetic wave generation module to generate electromagnetic waves of the appropriate frequency in the cylindrical body in accordance with the electromagnetic wave signal. 4. Heating device according to claim 3, in which the plastic elements contain an antenna body configured to divide the interior of the cylindrical body into a heating chamber and an electrical appliance compartment, wherein the object to be processed and the radiating antenna are respectively located in the heating chamber and the electrical appliance compartment. 5. The heating device according to claim 4, in which the antenna body is located in the lower part of the cylindrical body and the radiating antenna is horizontally fixed on the bottom surface of the antenna body. 6. Heating device according to claim 5, in which the radiating antenna is located at a height of 1/3-1/2 of the cylindrical body. 7. Heating device according to claim 5, in which the radiating antenna contains a plurality of engaging holes; and the antenna housing respectively comprises a plurality of brackets, and the plurality of brackets are configured to respectively pass through the plurality of engagement holes for engagement with the radiating antenna, wherein each of the brackets consists of two burrs located at a distance from each other and in mirror symmetry; or each of the brackets consists of a fixing part perpendicular to the radiating antenna and having a hollow middle part, and an elastic part passing at an angle to the fixing part from the inner end edge of the fixing part to the radiating antenna. 8. Heating device according to claim 5, further comprising a signal processing, measurement and control circuit, made with the possibility of electrical connection with the electromagnetic wave generation module and located in the electrical appliance compartment and on the rear side of the radiating antenna. 9. The heating device according to claim 8, in which the circuit for processing, measuring and controlling signals contains a detection unit connected in series between the electromagnetic wave generation unit and the radiating antenna, and configured to detect specific parameters of the incident wave signal and the reflected wave signal passing through the detection unit; a control unit configured to calculate the electromagnetic wave absorption rate of the object to be processed according to specific parameters; and a matching unit connected in series between the electromagnetic wave generation module and the radiating antenna and configured to adjust the load resistance of the electromagnetic wave generation module in accordance with the electromagnetic wave absorption rate.

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