CN220654661U - Radio frequency thawing apparatus and electrical equipment - Google Patents

Abstract

The application discloses a radio frequency thawing apparatus and electrical equipment belongs to electrical equipment's technical field. The radio frequency thawing device comprises a box assembly, a drawer assembly, a polar plate and a power amplifier module. The box body assembly comprises a shielding piece and a shielding cover, wherein the shielding piece is provided with a first shielding cavity, and the shielding piece is connected with the shielding cover to form a second shielding cavity; the drawer assembly is arranged in the first shielding cavity and used for accommodating articles to be thawed; the polar plate is arranged in the first shielding cavity and used for radiating radio frequency energy to the drawer assembly so as to defrost the articles to be defrosted; the power amplifier module is arranged in the second shielding cavity and is electrically connected with the polar plate and the shielding piece.

Description

Radio frequency thawing apparatus and electrical equipment

Technical Field

The application belongs to the technical field of electrical equipment, and particularly relates to a radio frequency thawing device and electrical equipment.

Background

During storage, the food is frozen to maintain quality and prevent spoilage, however frozen food is thawed prior to processing or consumption. The radio frequency thawing technology has the advantages of high thawing rate, large penetration depth, uniform heating and the like, has been gradually valued in the industry, and a radio frequency thawing device is added into a plurality of electrical equipment to thaw frozen foods, so that the multifunctional requirements of the electrical equipment are met.

In the related art, the radio frequency thawing device includes a shield, a drawer assembly and a plate, the drawer assembly is disposed between the shield and the plate, and a tuning capacitor is formed between the shield and the plate, and the tuning capacitor is used for radiating radio frequency energy to the drawer assembly to thaw food. The shield is grounded as one pole of the capacitor, however, in order to prevent the shield from being oxidized, a non-conductive protective layer is arranged on the shield, so that the shield is difficult to be grounded, and the common ground design requirement of the radio frequency system is affected.

Disclosure of Invention

The shielding element is used for solving the technical problem that the shielding element is difficult to be grounded due to the fact that the shielding element is provided with the non-conductive shielding layer. For this reason, the application provides a radio frequency thawing apparatus and electrical equipment.

In a first aspect, an embodiment of the present application provides a radio frequency thawing apparatus, which includes:

the box body assembly comprises a shielding piece and a shielding cover, wherein the shielding piece is provided with a first shielding cavity, and the shielding piece is connected with the shielding cover to form a second shielding cavity;

the drawer assembly is arranged in the first shielding cavity and used for accommodating articles to be thawed;

the polar plate is arranged in the first shielding cavity and used for radiating radio-frequency energy to the drawer assembly so as to defrost the article to be defrosted;

and the power amplifier module is arranged in the second shielding cavity and is electrically connected with the polar plate and the shielding piece.

In the radio frequency thawing device that this application embodiment provided, the shield has first shielding chamber, the shield with the shield cover is connected, forms the second shielding chamber, and drawer subassembly and polar plate set up in first shielding chamber, and the shield forms tuning capacitor with the polar plate, and drawer subassembly sets up between shield and polar plate to make tuning capacitor radiate radio frequency energy to drawer subassembly, thawing food, power amplifier module setting is in the second shielding chamber, and drawer subassembly, polar plate and power amplifier module all set up in the box subassembly promptly, and power amplifier module all is connected with polar plate and shield electricity, because power amplifier module contains the circuit, thereby can realize good common ground requirement after making shield and power amplifier module electricity be connected, in order to guarantee tuning capacitor's radiating effect.

In some embodiments, the shielding member comprises a shielding body and a protective layer, the shielding body comprises a first area and a second area, the protective layer is wrapped on the first area, and the second area is electrically connected with the power amplifier module.

In some embodiments, the second region is provided with a conductive layer electrically connecting the power amplifier module and the shielding body.

In some embodiments, the second region is disposed within the second shielded cavity.

In some embodiments, the second region is in surface contact with the power amplifier module to electrically connect the second region with the power amplifier module.

In some embodiments, the radio frequency thawing device further comprises a metal connector that electrically connects the shield and the power amplifier module.

In some embodiments, the plurality of metal connectors are provided, and the plurality of metal connectors are annularly arranged on the power amplifier module and the box body assembly.

In some embodiments, the shield member includes a shield spacer, a shield body, and an upper cover, the upper cover is connected with the shield body, the shield spacer is connected with the shield upper cover and one end of the shield body, the shield spacer, the shield body, and the upper cover form the first shield cavity, the shield spacer and the shield cover form the second shield cavity, and the power amplifier module is electrically connected with the shield spacer.

In some embodiments, the power amplifier module includes a shielding cover, a circuit board and a heat sink, the circuit board is fixed on the heat sink, the shielding cover is connected with the heat sink, and the shielding cover is electrically connected with the shielding partition.

In a second aspect, an embodiment of the present application provides an electrical apparatus, including a main body and the radio frequency thawing device described above, where the main body has a mounting cavity, and the radio frequency thawing device is disposed in the mounting cavity.

The electrical device provided in the second aspect has the same beneficial effects as the radio frequency thawing device provided in the first aspect, and will not be described here again.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 shows a block diagram of a radio frequency thawing apparatus;

fig. 2 shows a schematic diagram of a radio frequency thawing device;

FIG. 3 shows an exploded view of FIG. 2;

fig. 4 shows a second schematic structural diagram of the rf thawing apparatus;

fig. 5 shows a third schematic structural diagram of the rf thawing apparatus;

FIG. 6 shows a cross-sectional view of FIG. 4;

FIG. 7 shows an exploded view of FIG. 4;

fig. 8 shows a schematic structural diagram of an electrical device.

Reference numerals:

10-electrical equipment, 100-radio frequency thawing device, 110-cabinet assembly, 112-first shielding cavity, 112 a-tuning cavity, 112 b-thawing cavity, 112 c-splitter plate, 112 d-opening, 113-second shielding cavity, 114-shield, 114 a-upper cover, 114 b-shield splitter plate, 114 c-shield body, 114 f-shield body, 1148-first area, 1149-second area, 114 g-shield layer, 114 e-connector, metal connector-114 i, 1141-first side plate, 1142-bottom plate, 1143-second side plate, 115-boss, 115 a-mounting plate, 115 b-connecting plate, 117-shield, 120-drawer assembly, 130-plate, 140-tuning inductor, 150-radio frequency generating assembly, 152-power module, 154-power amplifier module, 154 a-signal source, 154 b-power amplifier circuit, 154 c-detector circuit, 154 d-shield cover, 154 e-circuit board, 154 f-connector, 156-control module, 180-connector, body connector, 200-181-mounting hole, and heat sink.

Detailed Description

The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.

It should be noted that all the directional indicators in the embodiments of the present application are only used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture, and if the specific posture is changed, the directional indicators are correspondingly changed.

In the present application, unless explicitly specified and limited otherwise, the terms "coupled," "secured," and the like are to be construed broadly, and for example, "secured" may be either permanently attached or removably attached, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.

In addition, descriptions such as those related to "first," "second," and the like, are provided for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated in this application. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be regarded as not exist and not within the protection scope of the present application.

Referring to fig. 1, the radio frequency thawing device and the electrical equipment provided in the embodiments of the present application are disposed in the electrical equipment, so as to quickly thaw frozen food in the electrical equipment, thereby meeting the multifunctional requirements of the electrical equipment. As shown in the figure, the radio frequency thawing device comprises a radio frequency generating assembly 150 and a tuning module, the radio frequency generating assembly 150 comprises a power module 152, a power amplification module 154 and a control module 156, the power module 152, the power amplification module 154 and the control module 156 are all electrically connected, the power module 152 is used for supplying power to the power amplification module 154 and the control module 156, the power amplification module 154 is used for generating an initial signal with a set frequency, and the control module 156 is used for controlling the circuits in the power module 152 and the power amplification module 154 to work; when the output power of the power amplifier module 154 needs to be adjusted, the control module 156 calculates an adjustment control command based on an internal algorithm and sends the adjustment control command to the power module 152, and the power module 152 adjusts the voltage to change the output voltage of the power module 152.

The power amplification module 154 comprises a signal source 154a, a power amplification circuit 154b and a detection circuit 154c, wherein the signal source 154a is used for generating an initial signal with a set frequency (40.68 MHz), the power amplification circuit 154b is used for amplifying the power of the initial signal, enhancing the power of the initial signal and outputting a power amplification signal; the detection circuit 154c is used for detecting the output power of the power amplifier signal and the reflected power reflected by the tuning module, and feeding back the reflected power to the control module 156.

The tuning module comprises a tuning inductor 140 and a polar plate 130, the tuning inductor 140 is electrically connected with the polar plate 130 and is electrically connected with the power amplifier module 154 through the tuning inductor 140, and after receiving a power amplifier signal, the tuning module radiates radio frequency energy to food to quickly defrost the food.

In the related art, the radio frequency thawing device includes a shield, a drawer assembly and a plate, the drawer assembly is disposed between the shield and the plate, and a tuning capacitor is formed between the shield and the plate, and the tuning capacitor is used for radiating radio frequency energy to the drawer assembly to thaw food. The shield is required to be grounded as one pole of the capacitor, however, in order for the shield not to be oxidized, a non-conductive shield layer is provided on the shield, resulting in difficulty in grounding the shield.

In order to solve the problems existing in the related art to a certain extent, the radio frequency thawing provided by the embodiment of the application can achieve good common-ground requirements so as to ensure the radiation effect of the tuning capacitor.

The present application is described below with reference to specific embodiments in conjunction with the accompanying drawings:

with reference to fig. 2 to fig. 7, an embodiment of the present application provides a radio frequency thawing device 100, where the radio frequency thawing device 100 provided by the implementation of the present application can achieve a good common-ground requirement, so as to ensure a radiation effect of a tuning capacitor.

The radio frequency thawing device 100 provided in the embodiment of the application includes a box assembly 110, a drawer assembly 120, a polar plate 130 and a power amplifier module 154. The housing assembly 110 includes a shield 114 and a shield cover 117, the shield 114 having a first shield cavity 112, the shield 114 and the shield cover 117 being connected to form a second shield cavity 113; the drawer assembly 120 is disposed in the first shielding cavity 112, and is used for accommodating the articles to be thawed; the polar plate 130 is disposed in the first shielding cavity 112, and is used for radiating radio frequency energy to the drawer assembly 120 to defrost the articles to be defrosted; the power amplifier module 154 is disposed in the second shielding cavity 113 and is electrically connected to the pole plate 130 and the shielding member 114.

The box assembly 110 is a basic component of the rf thawing device 100 of the present application, and the box assembly 110 can provide a mounting base for other at least partial components of the rf thawing device 100 and can also serve the purpose of protecting the other at least partial components of the rf thawing device 100. The shield 114 has a first shield cavity 112, the drawer assembly 120 and the plate 130 are disposed in the first shield cavity 112, the shield 114 and the plate 130 form a tuning capacitance, and the drawer assembly 120 is disposed between the shield 114 and the plate 130 such that the tuning capacitance radiates radio frequency energy to the drawer assembly 120 to defrost food in the drawer assembly 120. The shield 114 cooperates with the drawer assembly 120 to form a shielded chamber to shield radiant energy from energy leakage.

The power amplification module 154 is configured to generate an initial signal with a set frequency, and includes a signal source 154a, a power amplification circuit 154b and a detection circuit 154c, where the signal source 154a is configured to generate the initial signal with the set frequency (40.68 MHz), and the power amplification circuit 154b is configured to power amplify the initial signal, enhance the power of the initial signal, and output a power amplification signal; the detection circuit 154c is used for detecting the output power of the power amplifier signal and the reflected power reflected by the tuning module, and feeding back the reflected power to the control module 156. The shielding cover 117 is connected with the shielding member 114 to form a second shielding cavity 113, the power amplification module 154 is arranged in the second shielding cavity 113 and is electrically connected with the pole plate 130 and the shielding member 114, and the power amplification module 154 comprises a circuit, so that the shielding member 114 can be grounded after being electrically connected with the power amplification module 154, and good common-ground requirements are achieved.

In addition, since the drawer assembly 120 and the polar plate 130 are disposed in the first shielding cavity 112 of the box assembly 110, and the power amplifier module 154 is disposed in the second shielding cavity 113 of the box assembly 110, that is, the drawer assembly 120, the polar plate 130 and the power amplifier module 154 are disposed in the box assembly 110, the rf thawing apparatus 100 forms a whole, so that the rf thawing apparatus 100 is more convenient to install and has lower installation cost.

Moreover, since the shielding member 114 has the first shielding cavity 112, the second shielding cavity 113 is formed by connecting the shielding cover 117 with the shielding member 114, that is, the first shielding cavity 112 and the second shielding cavity 113 are separated by the shielding member 114, the first shielding cavity 112 and the second shielding cavity 113 are mutually independent, so that even if the drawer assembly 120, the polar plate 130 and the power amplification module 154 are all arranged in the box assembly 110, the influence of the power amplification module 154 on the radio frequency energy of the polar plate 130 can be avoided to a certain extent, and the mutual interference between the power amplification module 154 and the polar plate 130 can not be caused.

In some embodiments, the shielding 114 includes a shielding body 114f and a shielding layer 114g, the shielding body 114f includes a first region 1148 and a second region 1149, and the shielding layer 114g is wrapped around the first region 1148, and the second region 1149 is electrically connected to the power amplifier module 154.

The pole plate 130 and the drawer assembly 120 are both mounted in the first shielding cavity 112, and the shielding body 114f is configured to cooperate with the drawer assembly 120 to form a shielding cavity and form a tuning capacitor with the pole plate 130. The shielding body 114f is made of a metal material, so that in order to prevent the shielding body 114f from oxidizing and rusting and prolong the service life of the shielding member 114, a protective layer 114g needs to be arranged on the outer surface of the shielding body 114f to isolate the shielding body 114f from air and avoid oxidization. In particular, the protective layer 114g may be a corrosion-resistant coating or similar corrosion-resistant finish.

The shielding body 114f includes a first region 1148 and a second region 1149, the protective layer 114g is coated on the first region 1148, the second region 1149 is electrically connected with the power amplifier module 154, and since the shielding body 114f is made of a metal material, the second region 1149 not coated with the protective layer 114g has a conductive function and can be directly electrically connected with the power amplifier module 154. In order to ensure the protection effect on the shielding body 114f, the area of the first region 1148 needs to be far greater than the area of the second region 1149, that is, most of the area of the shielding body 114f needs to be provided with the protection layer 114g, and the area of the second region 1149 only needs to ensure that the shielding body 114f can be electrically connected with the power amplifier module 154, so that the shielding body 114f can be grounded.

In some embodiments, the second region 1149 is provided with a conductive layer electrically connecting the power amplifier module 154 and the shield body 114f to ground the shield body 114 f.

The conductive layer can electrically conduct to realize the electrical connection between the shielding body 114f and the power amplifier module 154, and can insulate the second region 1149 from air, so as to prevent the second region 1149 from oxidation, thereby prolonging the service life of the whole shielding body 114 f.

Specifically, the conductive layer may be formed by using conductive glue, that is, the conductive glue is directly applied to the second region 1149. Of course, the conductive layer may be made of other materials with good conductivity and air isolation, which is not limited.

In some embodiments, the second region 1149 is disposed within the second shielded cavity 113.

Because the power amplifier module 154 is disposed in the second shielding cavity 113, the second region 1149 is also disposed in the second shielding cavity 113, so that the second region 1149 is closer to the power amplifier module 154, and the electrical connection between the shielding body 114f and the power amplifier module 154 is more convenient, thereby achieving a good common-ground effect of the shielding body 114 f.

In some embodiments, the second region 1149 is in surface contact with the power amplifier module 154 such that the second region 1149 is electrically connected to the power amplifier module 154.

That is, the second area 1149 is electrically connected to the power amplifier module 154 through direct contact, and the second area 1149 is a surface, and the second area 1149 is in surface contact with the power amplifier module 154, so that a contact area between the second area 1149 and the power amplifier module 154 can be ensured, and an electrical connection effect between the shielding body 114f and the power amplifier module 154 can be ensured, so that a good common-ground effect is achieved for the shielding body 114 f.

Specifically, the shape of the second region 1149 may be rectangular, triangular, circular, etc., which is not limited thereto.

Of course, in other embodiments, the rf thawing apparatus 100 further comprises a metal connector 180, and the metal connector 180 electrically connects the shielding member 114 and the power amplifier module 154.

That is, the second region 1149 and the power amplifier module 154 may be electrically connected by the metal connection element 180, that is, one end of the metal connection element 180 contacts the second region 1149, and the other end contacts the power amplifier module 154, and since the metal connection element 180 may be electrically conductive, the electrical connection between the shielding element 114 and the power amplifier module 154 may be realized, and the shielding element 114 may be grounded.

Specifically, the metal connection member 180 may be a screw, that is, a screw may be swaged on the shielding member 114 to connect the screw with the shielding member 114, and the screw is connected to the power amplifier module 154, so that the shielding member 114 and the power amplifier module 154 may be electrically connected to ground.

In some embodiments, the plurality of metal connectors 180 is provided, and the plurality of metal connectors 180 are disposed around the power amplifier module 154 and the housing assembly 110.

The plurality of metal connectors 180 can increase the connection area between the shielding member 114 and the power amplifier module 154, thereby ensuring the electrical connection effect between the shielding body 114f and the power amplifier module 154 and realizing a good common-ground effect of the shielding body 114 f.

In some embodiments, the shielding member 114 includes a shielding partition 114b, a shielding main body 114c, and an upper cover 114a, the upper cover 114a is connected to the shielding main body 114c, the shielding partition 114b is connected to one ends of the shielding upper cover 114a and the shielding main body 114c, the shielding partition 114b, the shielding main body 114c, and the upper cover 114a form the first shielding cavity 112, the shielding partition 114b and the shielding cover 117 form the second shielding cavity 113, and the power amplifier module 154 is electrically connected to the shielding partition 114 b.

The upper cover 114a is fixedly connected with the shielding main body 114c, the shielding main body 114c is in an integrated structure so as to ensure the structural strength of the shielding main body 114c, and the shielding partition plate 114b is arranged at one end of the upper cover 114a and one end of the shielding main body 114c and is fixedly connected with at least one of the upper cover 114a and the shielding main body 114c, so that the shielding main body 114c and the upper cover 114a are surrounded to form the first shielding cavity 112.

The shielding partition 114b may be connected to the upper cover 114a, or may be connected to the shielding main body 114c, or may be connected to both the upper cover 114a and the shielding main body 114c, so as to further secure structural strength, and the shielding partition 114b may be connected to the shielding main body 114 c/the upper cover 114a by welding, screwing, or the like, which is not limited.

In some embodiments, the shield body 114c includes a first side plate 1141, a bottom plate 1142, and a second side plate 1143, the first side plate 1141 and the second side plate 1143 are connected to two sides of the bottom plate 1142, respectively, the upper cover 114a is connected to a side of the first side plate 1141 and the second side plate 1143 remote from the bottom plate 1142, and the shield partition 114b is connected to one end of the upper cover 114a, the first side plate 1141, the bottom plate 1142, and the second side plate 1143, thereby enclosing the first shield cavity 112.

The first side plate 1141 and the second side plate 1143 are respectively connected to two sides of the bottom plate 1142, so that the whole shielding main body 114c forms a substantially "U" shape structure. The first side plate 1141, the bottom plate 1142 and the second side plate 1143 may be integrally formed, that is, the shielding main body 114c is a unitary structure, so that when the shielding main body 114c is assembled with the upper cover 114a and the shielding partition 114b, the first side plate 1141, the bottom plate 1142 and the second side plate 1143 do not need to be assembled, so that the overall installation of the box assembly 110 is more convenient.

The first shielded cavity 112 also has an opening 112d for movement of the drawer assembly 120 relative to the housing assembly 110, and a shielding partition 114b is disposed opposite the opening 112d, i.e., the first and second shielded cavities 112, 113 are disposed side-by-side. The drawer assembly 120 is movably connected with the box assembly 110, and can slide into or slide out of the thawing cavity 112b from the opening 112d to achieve food taking and placing, and when the drawer assembly 120 slides into the thawing cavity 112b, the drawer assembly 120 and the first shielding cavity 112 form a sealed shielding cavity together to shield radiant energy, so that energy leakage is avoided.

Specifically, the first shielding chamber 112 and the second shielding chamber 113 are disposed in a front-to-rear direction, so that when the radio frequency thawing device 100 is disposed in the electrical equipment 10, a space occupying the width direction in the electrical equipment 10 can be reduced, so that additional space in the width direction in the electrical equipment 10 can accommodate other members, and an accommodating space of the electrical equipment 10 can be increased.

In some embodiments, the rf thawing apparatus 100 further comprises a tuning inductor 140, wherein the tuning inductor 140 is electrically connected to the power amplifier module 154 and the pole plate 130, and the tuning inductor 140 is mounted in the second shielding cavity 113.

The power amplifier module 154 is configured to output a power amplifier signal, and in a thawing process, when an oscillation frequency of an oscillating circuit formed by the tuning inductor 140 and the polar plate 130 is the same as a resonance frequency carried in the power amplifier signal, food can absorb radio frequency energy radiated by the polar plate 130 to achieve a thawing purpose.

In some embodiments, the rf thawing apparatus 100 further comprises a connector 180, and the shielding partition 114b is provided with a connecting hole 181, and the connector 180 is disposed through the connecting hole 181.

The tuning inductor 140 and the power amplifier module 154 are mounted in the same chamber together, so that the tuning inductor 140 and the power amplifier module 154 can be directly electrically connected. Since the tuning inductor 140 and the pole plate 130 are in different chambers, the distance between the tuning inductor 140 and the pole plate 130 is far, and the difficulty of directly and electrically connecting the tuning inductor 140 and the pole plate 130 is relatively high, so as to facilitate the connection between the tuning inductor 140 and the pole plate 130, the tuning inductor 140 and the pole plate 130 can be electrically connected through the connecting piece 180.

Specifically, the connecting member 180 is disposed through the connecting hole 181, and one end of the connecting member 180 may be located in the first shielding cavity 112 to connect with the pole plate 130, and the other end may be located in the second shielding cavity 113 to connect with the tuning inductor 140, so as to electrically connect the tuning inductor 140 with the pole plate 130.

Because the shielding shell, the shielding partition 114b and the shielding cover 117 are made of metal materials, the distance between the inner wall of the connecting hole 181 and the connecting piece 180 needs to be set at intervals, that is, the connecting piece 180 cannot be in direct contact with the inner wall of the connecting hole 181, so that the electric connection between the connecting piece 180 and the shielding partition 114b is avoided, and the functions of the polar plate 130 are affected.

It should be noted that, since the distance between the inner wall of the connection hole 181 and the connection member 180 needs to be set at intervals, that is, the size of the connection hole 181 needs to be larger than that of the connection member 180, but the size of the connection hole 181 should not be set too large, so as to avoid the influence of the power amplifier module on the rf energy of the polar plate 130. The connector 180 may employ an antenna connection tab.

Of course, in other embodiments, the tuning inductor 140 may also be mounted in the first shielding cavity 112, and of course, the tuning inductor 140 is disposed in the tuning cavity 112a. The tuning inductor 140 may be disposed near the polar plate 130 or near the second shielding cavity 113, and the tuning inductor 140 may be directly electrically connected to the polar plate 130 and the power amplifier module 154 through the connection member 180, or may be directly electrically connected to the power amplifier module 154 and the polar plate 130 through the connection member 180, which is not limited.

In some embodiments, the power amplifier module includes a shield cover 154d, a circuit board 154e, and a heat sink 154f, the circuit board 154e is secured to the heat sink 154f, the shield cover 154d is connected to the heat sink 154f, and the shield cover 154d is electrically connected to the shield partition 114 b.

The shielding cover 154d and the heat sink 154f are made of a metal material which is not easily rusted, and thus the shielding cover 154d and the heat sink 154f are electrically conductive. Since the circuit board 154e is fixed to the heat sink 154f, the shielding cover 154d is connected to the heat sink 154f, and the shielding cover 154d is electrically connected to the shielding partition 114b, so that the shielding partition 114b is electrically connected to the circuit board 154e through the conduction between the shielding member 114 and the heat sink 154f, and the shielding member 114 is electrically connected to the circuit board 154e, and the circuit board 154e is grounded, so that the shielding member 114 is grounded.

The heat dissipation element 154f may be disposed between the shielding cover 154d and the circuit board 154e, and the circuit board 154e of the power amplification module 154 includes the power amplification circuit 154b and the detection circuit 154c as described above, and the heat dissipation element 154f is used for dissipating heat from the circuit board 154 e. Specifically, the heat sink 154f may be a finned heat sink.

In some embodiments, the first shielding cavity includes a tuning cavity and a thawing cavity, the drawer assembly is disposed in the thawing cavity, the pole plate is disposed in the tuning cavity, the housing assembly 110 further includes a boss 115 protruding from the shield 114 away from the thawing cavity 112b, and the tuning cavity 112a is disposed within the boss 115.

The protruding portion 115 protrudes towards a direction away from the thawing cavity 112b, so that the space of the thawing cavity 112b is not occupied, the tuning cavity 112a is arranged in the protruding portion 115, so that more space can be reserved in the shielding piece 114 to serve as the thawing cavity 112b, the volume of the drawer assembly 120 can be increased, more food can be contained in the drawer assembly 120, further, the radio frequency thawing device 100 can thaw more food at one time, and the thawing efficiency of the radio frequency thawing device 100 is improved.

In some embodiments, the boss 115 is disposed at the bottom of the shield 114.

The polar plate 130 may be disposed in the tuning cavity 112a through a support frame, and in order to facilitate the disposition of the support frame, the tuning cavity 112a and the thawing cavity 112b are stacked, and the tuning cavity 112a is disposed below the thawing cavity 112b, so that the protruding portion 115 is disposed at the bottom of the shielding member 114.

Specifically, the protruding portion 115 is disposed on the bottom plate 1142 of the shielding main body 114c, and protrudes in a direction away from the upper cover 114 a.

In some embodiments, the boss 115 includes a mounting plate 115a and a web 115b, the web 115b being disposed around the mounting plate 115a and coupled to the shield 114 such that the mounting plate 115a, the web 115b, and the shield 114 form a tuning cavity 112a in which the support bracket and the pole plate 130 are mounted, the support bracket being secured to the mounting plate 115a to mount the pole plate 130. The connection plate 115b may be disposed obliquely to enhance the structural strength of the boss 115.

Specifically, the connection plate 115b may be disposed obliquely in a direction away from the center of the mounting plate 115a to increase the volume of the tuning cavity 112a. The shielding member 114, the connection plate 115b, and the mounting plate 115a may be integrally formed to further secure the structural strength of the boss 115.

In some embodiments, the shield 114 is provided with a connection port 114e, and the connection plate 115b of the boss 115 is connected to the connection port 114e, i.e., the tuning chamber 112a communicates with the thawing chamber 112b through the connection port 114e, so that the plate 130 can radiate energy to the drawer assembly 120.

The connection plate 115b of the protruding portion 115 may be connected to the edge of the connection port 114e, that is, the protruding portion 115 and the connection port 114e completely correspond to each other, the projection of the protruding portion 115 on the shielding member 114 completely coincides with the connection port 114e, and the whole tuning cavity 112a is communicated with the defrosting cavity 112b, so that the energy radiated by the polar plate 130 can be maximally introduced into the defrosting cavity 112b, so as to improve the defrosting efficiency.

Of course, in other embodiments, the projection of the boss 115 onto the shield 114 may cover the connection port 114e, so long as the tuning chamber 112a is guaranteed to communicate with the defrosting chamber 112b, and the energy radiated by the plate 130 may enter the defrosting chamber 112 b.

It should be noted that, the protruding portion 115 may serve as the tuning cavity 112a to accommodate the electrode plate 130, and may also serve to strengthen the structural strength of the shielding member 114, so as to reduce the occurrence probability of the magnetic leakage caused by the damage of the shielding member 114 to some extent.

The box assembly 110 further includes a separation plate 112c, where the separation plate 112c is disposed on the connection port 114e to separate the tuning cavity 112a from the thawing cavity 112b, so that the tuning cavity 112a and the thawing cavity 112b are disposed independently of each other, thereby isolating the polar plate 130 from food, and avoiding damage to the polar plate 130 caused by water vapor generated during thawing of the food.

It should be noted that, since the energy radiated from the electrode plate 130 needs to enter the defrosting chamber 112b through the partition plate 112c, the partition plate 112c cannot be made of a material having an electromagnetic shielding effect, and in particular, the partition plate 112c may be made of plastic.

In the radio frequency thawing device 100 provided by the embodiment of the application, the shielding member 114 is provided with the first shielding cavity 112, the shielding member 114 is connected with the shielding cover 117 to form the second shielding cavity 113, the drawer assembly 120 and the pole plate 130 are arranged in the first shielding cavity 112, the shielding member 114 and the pole plate 130 form a tuning capacitor, the drawer assembly 120 is arranged between the shielding member 114 and the pole plate 130 so that the tuning capacitor radiates radio frequency energy to the drawer assembly 120, food is thawed, the power amplifier module 154 is arranged in the second shielding cavity 113, namely, the drawer assembly 120, the pole plate 130 and the power amplifier module 154 are all arranged in the box assembly 110, and the power amplifier module 154 is electrically connected with the pole plate 130 and the shielding member 114.

Based on the same inventive concept, referring to fig. 4 to 8, an electrical apparatus 10 is provided in an embodiment of the present application, including a main body 200 and the radio frequency thawing device 100 described above, the main body 200 has a mounting cavity 210, and the radio frequency thawing device 100 is disposed in the mounting cavity 210. Wherein, the main body 200 is a basic component of the refrigerator, and the main body 200 can provide a mounting base for other at least partial components of the refrigerator and can also serve the purpose of protecting the other at least partial components of the refrigerator.

The electric device 10 may be a refrigerator, the main body 200 has a freezing chamber, a refrigerating chamber, and a temperature varying chamber, and the installation cavity 210 may be provided in any one of the freezing chamber, the refrigerating chamber, and the temperature varying chamber.

The installation cavity 210 is internally provided with an air duct, and the tuning cavity 112a is provided with an air inlet and an air outlet which are communicated with the air duct, so that air circulation is formed among the air duct, the air inlet, the air outlet and the thawing cavity 112b, and heat in the thawing cavity 112b can be continuously taken away by air in the flowing process, so that the temperature in the tuning cavity 112a is reduced, the damage to a high Wen Duidiao tuning module is avoided to a certain extent, and the performance of the tuning module is ensured.

In some embodiments, the protruding portion 115 is disposed in the air duct, so that the original installation space of the shielding member 114 in the installation cavity 210 is not occupied while the protruding portion 115 is disposed on the shielding member 114, and the protruding portion 115 is directly disposed in the air duct, so that the heat dissipation effect on the tuning cavity 112a can be enhanced.

In some embodiments, the raised portion 115 is spaced from the inner wall of the air tunnel to ensure that air flows between the raised portion 115 and the inner wall of the air tunnel, thereby ensuring that heat in the tuning cavity 112a is carried away by the air.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Further, one skilled in the art can engage and combine the different embodiments or examples described in this specification.

In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be regarded as not exist and not within the protection scope of the present application.

While embodiments of the present application have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the application, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. A radio frequency thawing device, comprising:

-a housing assembly (110) comprising a shield (114) and a shield (117), the shield (114) having a first shield cavity (112), the shield (114) and the shield (117) being connected to form a second shield cavity (113);

a drawer assembly (120) disposed in the first shielding cavity (112) for accommodating the articles to be thawed;

a plate (130) disposed in the first shielding cavity (112) for radiating radio frequency energy to the drawer assembly (120) to defrost the article to be defrosted;

and the power amplification module (154) is arranged in the second shielding cavity (113) and is electrically connected with the polar plate (130) and the shielding piece (114).

2. The radio frequency thawing device according to claim 1, wherein the shield (114) comprises a shield body (114 f) and a shielding layer (114 g), the shield body (114 f) comprises a first region (1148) and a second region (1149), the shielding layer (114 g) is wrapped around the first region (1148), and the second region (1149) is electrically connected to the power amplifier module (154).

3. The radio frequency thawing device according to claim 2, characterized in that the second region (1149) is provided with a conductive layer electrically connecting the power amplifier module (154) and the shielding body (114 f).

4. The radio frequency thawing device as defined in claim 2, wherein the second region (1149) is disposed within the second shielded cavity (113).

5. The radio frequency thawing device according to claim 2, characterized in that the second region (1149) is in surface contact with the power amplifier module (154) such that the second region (1149) is electrically connected to the power amplifier module (154).

6. The radio frequency thawing device as defined in claim 1, further comprising a metal connection (180), wherein the metal connection (180) electrically connects the shield (114) and the power amplifier module (154).

7. The rf thawing device as defined in claim 6, wherein the plurality of metal connectors (180) is provided, the plurality of metal connectors (180) being disposed around the power amplifier module (154) and the housing assembly (110).

8. The radio frequency thawing device according to any of claims 1-7, wherein the shield (114) comprises a shield spacer (114 b), a shield body (114 c) and an upper cover (114 a), the upper cover (114 a) is connected to the shield body (114 c), the shield spacer (114 b) is connected to the shield upper cover (114 a) and one end of the shield body (114 c), the shield spacer (114 b), the shield body (114 c) and the upper cover (114 a) form the first shield cavity (112), the shield spacer (114 b) and the shield cap (117) form the second shield cavity (113), and the power amplifier module (154) is electrically connected to the shield spacer (114 b).

9. The radio frequency thawing device according to claim 8, characterized in that the power amplifier module (154) comprises a shielding cover (154 d), a circuit board (154 e) and a heat sink (154 f), the circuit board (154 e) is fixed to the heat sink (154 f), the shielding cover (154 d) is connected to the heat sink (154 f), and the shielding cover (154 d) is electrically connected to the shielding partition (114 b).

10. An electrical apparatus comprising a radio frequency thawing device (100) as claimed in any of claims 1-9.