CN112020167B - Radio frequency heating equipment - Google Patents

Abstract

The application relates to a radio frequency heating apparatus comprising: a radio frequency module configured to heat an object; the main heat dissipation piece is arranged to be in contact connection with the radio frequency module; an auxiliary heat sink provided to be connected with the main heat sink; and the heat conduction piece is arranged to connect the main heat dissipation piece and the auxiliary heat dissipation piece so that the main heat dissipation piece and the auxiliary heat dissipation piece can dissipate heat together. According to the embodiment of the disclosure, through the combination of the main radiating piece, the auxiliary radiating piece and the like, the radiating area of the radio frequency heating equipment is increased, the radiating efficiency is improved, a good radiating effect can be obtained under the condition of a low-air-volume fan, and the influence of increased noise caused by the improvement of the fan specification in the prior art is avoided.

Description

RF heating equipment

technical field

The present application relates to the technical field of microwave heating, for example, to a radio frequency heating device.

Background technique

At present, due to the advantages of low cost and small size of semiconductor solid-state radio frequency sources, and the technical advantages of good controllability of radio frequency signals emitted by semiconductor solid-state radio frequency sources, more and more radio frequency heating equipment uses solid-state radio frequency sources to generate radio frequency for heating energy signal. The output power of the solid-state radio frequency source can be adjusted within the set frequency range to meet the heating needs of different items.

In many radio frequency heating devices, such as household embedded radio frequency ovens, the air inlet and outlet areas for heat dissipation are very limited, and the installation position and allowable volume of the radio frequency source are also limited. At the same time, the oven itself generates heat during operation, causing radio frequency The ambient temperature of the source is high. In order to achieve the required heat dissipation power, it is usually necessary to select a high air volume fan.

In the process of implementing the embodiments of the present disclosure, it is found that there are at least the following problems in the related art: the high-volume fan of the radio frequency heating device usually has relatively high noise.

Contents of the invention

In order to provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is presented below. The summary is not intended to be an extensive overview nor to identify key/important elements or to delineate the scope of these embodiments, but rather serves as a prelude to the detailed description that follows.

An embodiment of the present disclosure provides a radio frequency heating device to solve the problem of a high-volume fan of the radio frequency heating device and high noise.

In some embodiments, the radio frequency heating device includes:

a radio frequency module configured to heat the object;

a main heat sink configured to be in contact with the radio frequency module;

an auxiliary heat sink configured to be connected to the main heat sink;

The heat conduction element is configured to connect the main heat dissipation element and the auxiliary heat dissipation element, so that the main heat dissipation element and the auxiliary heat dissipation element jointly dissipate heat.

The radio frequency heating equipment provided by the embodiments of the present disclosure can achieve the following technical effects:

The embodiment of the present disclosure increases the heat dissipation area of the radio frequency heating equipment and improves the heat dissipation efficiency by combining multiple heat dissipation elements such as the main heat dissipation element and the auxiliary heat dissipation element, and can also obtain a good heat dissipation effect in the case of a low air volume fan, avoiding In the prior art, the impact of increasing the noise caused by increasing the specification of the fan.

The foregoing general description and the following description are exemplary and explanatory only and are not intended to limit the application.

Description of drawings

One or more embodiments are exemplified by the corresponding drawings, and these exemplifications and drawings do not constitute a limitation to the embodiments. Elements with the same reference numerals in the drawings show similar elements, The drawings are not limited to scale and in which:

Fig. 1 is a schematic structural diagram of a radio frequency heating device provided by an embodiment of the present disclosure;

Fig. 2 is a schematic structural diagram of a radio frequency heating device provided by an embodiment of the present disclosure;

Fig. 3 is a schematic structural diagram of a radio frequency heating device provided by an embodiment of the present disclosure.

Reference signs:

101: RF module; 102: main heat sink; 103: auxiliary heat sink; 104: heat conduction; 105: air duct; 1051: air inlet; 1052: air outlet; 106: fan; 107: heat insulation layer; 108: shell.

Detailed ways

In order to understand the characteristics and technical content of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure will be described in detail below in conjunction with the accompanying drawings. The attached drawings are only for reference and description, and are not intended to limit the embodiments of the present disclosure. In the following technical description, for purposes of explanation, numerous details are set forth in order to provide a thorough understanding of the disclosed embodiments. However, one or more embodiments may be practiced without these details. In other instances, well-known structures and devices may be shown simplified in order to simplify the drawings.

The radio frequency module mentioned in this article includes modules such as a radio frequency source for transmitting radio frequency signals and a power amplifier for processing radio frequency signals. The RF heating equipment will generate heat during the heating process, which will cause the temperature of the working environment of the RF module to rise. If the temperature is too high, the working efficiency of the RF module will be reduced. In the related art, heat dissipation is accelerated by setting a high-volume fan, so as to prevent the working environment temperature of the radio frequency module from being too high. The embodiments of the present disclosure provide a different solution for improving the heat dissipation efficiency of the radio frequency heating device, and a good heat dissipation effect can also be obtained in the case of a fan with a low air volume.

As shown in Figure 1, an embodiment of the present disclosure provides a radio frequency heating device, including:

The radio frequency module 101 is configured to heat an object.

The main heat sink 102 is configured to be in contact with the radio frequency module 101 .

The auxiliary heat sink 103 is configured to be connected to the main heat sink 102 .

The heat conduction element 104 is arranged to connect the main heat dissipation element 102 and the auxiliary heat dissipation element 103, so that the main heat dissipation element 102 and the auxiliary heat dissipation element 103 can dissipate heat together, so as to increase the heat dissipation area of the heat dissipation element and avoid the main heat dissipation that is connected with the radio frequency module 101. The temperature of the component 102 is too high, the heat dissipation pressure is high, and the heat dissipation is not timely, which will affect the radio frequency module 101 and reduce the working efficiency of the radio frequency module 101 .

The embodiment of the present disclosure increases the heat dissipation area of the radio frequency heating equipment and improves the heat dissipation efficiency by combining multiple heat dissipation elements such as the main heat dissipation element and the auxiliary heat dissipation element, and can also obtain a good heat dissipation effect in the case of a low air volume fan, avoiding In the prior art, the impact of increasing the noise caused by increasing the specification of the fan.

In some embodiments, the heat conducting element 104 is a heat conducting plate or a capillary tube.

Wherein, the heat conduction element 104 is a heat conduction plate or a capillary tube, which has a large heat exchange area and high heat exchange efficiency, and can quickly conduct heat from the main heat dissipation element 102 to the auxiliary heat dissipation element 103, improving the heat dissipation efficiency of the radio frequency heating device.

In some embodiments, when the heat conduction element 104 is a capillary tube, in order to quickly conduct heat from the main heat sink 102 to the auxiliary heat sink 103 , the heat conduction element 104 includes a plurality of capillary tubes. Optionally, a plurality of capillaries form a capillary network. On the basis of thin capillary walls and good thermal conductivity, the overlapping of multiple capillaries increases the heat dissipation area, speeds up the heat transfer between the main heat sink 102 and the auxiliary heat sink 103, and improves the heat dissipation efficiency of the radio frequency heating device.

In different embodiments, the positions of the main heat sink 102 and the auxiliary heat sink 103 are different.

In some embodiments, as shown in FIG. 2 , the main heat sink 102 is disposed at the air outlet 1052 of the air duct 105 .

Wherein, the main heat sink 102 is in contact with the radio frequency module 101, and the main heat sink 102 and the radio frequency module 101 are arranged at the air outlet 1052 of the ventilation duct 105, so as to ensure that part of the heat generated during the operation of the radio frequency module 101 is directly dissipated from the air outlet 1052 to outside the radio frequency heating equipment.

Part of the heat generated during the operation of the radio frequency module 101 causes the temperature of the surrounding air to rise, and the temperature of the air will rise.

In some embodiments, in order to dissipate heat, as shown in FIG. 2 , the air outlet 1052 is provided at a position close to the top of the radio frequency heating device. The arrow direction in FIG. 2 is the air flow direction in the ventilation duct 105 .

In some embodiments, as shown in FIG. 3 , the air outlet 1052 is disposed on the top of the radio frequency heating device. The arrow direction in FIG. 3 is the air flow direction in the ventilation duct 105 .

Wherein, the air outlet 1052 is arranged on the top of the radio frequency heating device, and the main cooling element 102 is correspondingly arranged on the top of the radio frequency heating device, so that the high temperature gas can be quickly dissipated to the outside of the radio frequency heating device, so as to improve the heat dissipation efficiency of the radio frequency heating device.

In some embodiments, as shown in FIG. 2 or FIG. 3 , the auxiliary heat sink 103 is disposed at the air inlet 1051 of the air duct 105 .

Wherein, the gas temperature at the air inlet 1051 of the air duct 105 is relatively low, and the auxiliary heat sink 103 is arranged at the air inlet 1051 of the air air duct 105, so as to prevent the local temperature from being too high due to the close distance between the auxiliary heat sink 103 and the main heat sink 102 Reduce the working efficiency of radio frequency heating equipment. The auxiliary heat sink 103 and the main heat sink 102 are respectively arranged at the air inlet 1051 and the air outlet 1052 of the ventilation duct 105, which is beneficial to the uniform distribution of temperature in the ventilation duct 105, reduces the operating pressure of the low air volume fan, and improves the radio frequency heating equipment. cooling efficiency.

In some embodiments, the air inlet 1051 is disposed at more than one of the side wall of the radio frequency heating device or the bottom of the radio frequency heating device.

The air inlet 1051 is set on the side wall of the radio frequency heating equipment or the bottom of the radio frequency heating equipment, so that the air inlet 1051 is lower than the air outlet 1052, so that the gas with a higher temperature can be smoothly distributed from the higher air inlet 1051 to the outside of the radio frequency heating equipment .

In some embodiments, the main heat sink 102 and the auxiliary heat sink 103 are finned heat sinks.

Among them, the finned heat sink increases the heat dissipation area, which helps to improve the heat dissipation efficiency of the radio frequency heating equipment.

In some embodiments, the heat dissipation fins of the main heat dissipation element 102 and the auxiliary heat dissipation element 103 are arranged parallel to the gas flow direction in the ventilation duct 105, so as to reduce the resistance of the heat dissipation fins to the gas and speed up the ventilation. The gas flow speed in the air duct 105 improves the heat dissipation efficiency of the radio frequency, and prevents the heating equipment from not cooling in time, resulting in excessive internal temperature of the radio frequency heating equipment and reducing the operating efficiency of the radio frequency module 101.

In some embodiments, the heat dissipation area of the auxiliary heat sink 103 is greater than the heat dissipation area of the main heat sink 102 .

Optionally, the auxiliary heat sink 103 includes more than two, and the total heat dissipation area of the auxiliary heat sink 103 is larger than the heat dissipation area of the main heat sink 102 . Optionally, only one auxiliary heat sink 103 is included, and the heat dissipation area of this heat sink is larger than that of the main heat sink 102 .

Wherein, the main heat sink 102 is in contact with the radio frequency module 101, and in the process of conducting heat from the main heat sink 102 to the auxiliary heat sink 103, the heat is dissipated, so it is convenient to transfer more heat to the lower temperature At the air inlet 1051 , the total heat dissipation area of the auxiliary heat sink 103 is larger than the heat dissipation area of the main heat sink 102 .

In some embodiments, the ventilation duct 105 is surrounded by the heat insulation layer 107 and the casing 108 of the radio frequency heating device.

During the heating process of the radio frequency heating equipment, the working temperature in the heating chamber reaches 180°C to 250°C, so as to avoid damage to the radio frequency module 101 caused by excessive temperature, or damage to surrounding objects. The radio frequency heating equipment is provided with a heat insulation layer 107 outside the heating chamber , A ventilation duct 105 is formed between the heat insulation layer 107 and the casing 108, which facilitates the heat dissipation of the radio frequency module 101.

In some embodiments, as shown in FIG. 2 and FIG. 3 , the radio frequency heating device further includes: a fan 106 . In FIG. 2 and FIG. 3 , the fan 106 is disposed at the air outlet 1052 of the air duct 105 .

Optionally, the fan 106 is disposed at more than one of the air inlet 1051 of the ventilation duct 105 , inside the ventilation duct 105 or the air outlet 1052 of the ventilation duct 105 .

Wherein, a fan 106 is provided at the air inlet 1051 of the air duct 105 for adjusting the air volume entering the air inlet 1051 . A fan 106 is provided at the air outlet 1052 for adjusting the air volume of the exhaust ventilation duct 105 . A fan 106 is provided in the ventilation duct 105 for adjusting the air velocity in the ventilation duct 105 .

In some embodiments, more than two fans 106 are used to speed up the flow speed of the air in the ventilation duct 105 to improve heat dissipation efficiency. Wherein, more than two fans 106 are arranged in different positions.

The above description and drawings sufficiently illustrate specific embodiments herein to enable those skilled in the art to practice them. Portions and features of some embodiments may be included in or substituted for those of other embodiments. The scope of the embodiments herein includes the full scope of the claims, and all available equivalents of the claims. Herein, the terms "first", "second", etc. are only used to distinguish one element from another element without requiring or implying any actual relationship or order between these elements. In fact the first element can also be called the second element and vice versa. Furthermore, the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a structure, means or apparatus comprising a series of elements includes not only those elements but also other elements not expressly listed elements, or also elements inherent in the structure, device or equipment. Without further limitations, an element defined by the phrase "comprising a" does not preclude the presence of additional identical elements in the structure, device or equipment comprising said element. Various embodiments herein are described in a progressive manner, each embodiment focuses on the differences from other embodiments, and the same and similar parts of the various embodiments may be referred to each other.

The terms "vertical", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", " The orientation or positional relationship indicated by "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing this text and simplifying the description, rather than indicating or implying that the referred device or element must Having a particular orientation, being constructed in a particular orientation, and operating in a particular orientation, therefore, are not to be construed as limitations of the present disclosure. In the description herein, unless otherwise stipulated and limited, the terms "installation", "connection" and "connection" should be interpreted in a broad sense, for example, it can be a mechanical connection or an electrical connection, and it can also be the internal communication of two components, It may be directly connected or indirectly connected through an intermediary, and those skilled in the art can understand the specific meanings of the above terms according to specific situations.

The present disclosure is not limited to the structures that have been described above and shown in the drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims (7)

1. A radio frequency heating device, characterized in that, comprising: a radio frequency module configured to heat the object; a main heat sink configured to be in contact with the radio frequency module; an auxiliary heat sink configured to be connected to the main heat sink; A heat conduction element configured to connect the main heat dissipation element and the auxiliary heat dissipation element so that the main heat dissipation element and the auxiliary heat dissipation element can dissipate heat together; The heat conduction element is a heat conduction plate or a capillary tube, so as to quickly transfer the heat of the main heat dissipation element to the auxiliary heat dissipation element; Wherein, when the heat conduction element is a capillary tube, the heat conduction element includes a plurality of capillary tubes, and the plurality of capillary tubes form a capillary network, and the overlapping of the plurality of capillary tubes increases the heat dissipation area, so as to speed up the contact between the main heat dissipation element and the heat dissipation element. The heat transfer between the auxiliary heat sinks; The main cooling element is arranged at the air outlet of the ventilation duct, the auxiliary cooling element is arranged at the air inlet of the ventilation duct, and the heat dissipation area of the auxiliary cooling element is larger than that of the main cooling element. 2. The device according to claim 1, wherein the air outlet is arranged on the top of the radio frequency heating device. 3. The device according to claim 1, characterized in that, the air inlet is arranged at more than one of the side wall or the bottom of the radio frequency heating device. 4. The device according to any one of claims 1 to 3, wherein the main heat sink and the auxiliary heat sink are finned heat sinks. 5 . The device according to claim 4 , wherein the heat dissipation fins of the main heat dissipation element and the auxiliary heat dissipation element are arranged parallel to the direction of gas flow in the ventilation duct. 6 . 6. The device according to any one of claims 1 to 3, characterized in that the ventilation duct is surrounded by a heat insulation layer and a casing of the radio frequency heating device. 7. The device according to claim 6, further comprising: The fan is arranged at one or more of the air inlet of the ventilation duct, the inside of the ventilation duct, or the air outlet of the ventilation duct.

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