WO2017096779A1 - 微波炉 - Google Patents
微波炉 Download PDFInfo
- Publication number
- WO2017096779A1 WO2017096779A1 PCT/CN2016/087164 CN2016087164W WO2017096779A1 WO 2017096779 A1 WO2017096779 A1 WO 2017096779A1 CN 2016087164 W CN2016087164 W CN 2016087164W WO 2017096779 A1 WO2017096779 A1 WO 2017096779A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- microwave oven
- air
- circuit board
- mounting base
- inverter circuit
- Prior art date
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Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/64—Heating using microwaves
- H05B6/642—Cooling of the microwave components and related air circulation systems
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/64—Heating using microwaves
- H05B6/6426—Aspects relating to the exterior of the microwave heating apparatus, e.g. metal casing, power cord
Definitions
- the present invention relates to the field of kitchen appliances, and more particularly to a microwave oven.
- the present invention aims to solve at least one of the technical problems existing in the prior art.
- an object of the present invention is to provide a microwave oven that not only solves the problem of insufficient installation space of the inverter circuit board, but also effectively controls the temperature rise of the inverter circuit board.
- embodiments of the present invention provide a microwave oven having a cooking chamber and an electric chamber located behind the cooking chamber, the electric chamber being provided with a magnetron, a frequency converter assembly, and a cooling fan.
- the frequency converter assembly includes: a mounting bracket mounted on a bottom plate of the microwave oven; a mounting base mounted obliquely on the mounting bracket; and a frequency converter circuit board mounted on the mounting base And being disposed obliquely with respect to the bottom plate of the microwave oven; and an air guiding cover disposed above the inverter circuit board for guiding cold air blown by the cooling fan to the inverter circuit board.
- the inverter circuit board is mounted on the tilting mounting base, that is, the inverter circuit board is installed on the bottom plate of the microwave oven through the mounting bracket and the mounting base, and the inverter circuit board is vertically placed.
- the height of the inverter circuit board is effectively reduced, and the installation space of the inverter circuit board is limited due to the small installation space of the microwave oven, and the installation space is insufficient, so that the structure of the product is more compact, and the height of the inverter circuit board is high.
- the microwave oven provided by the invention not only solves the problem of insufficient installation space of the inverter circuit board by obliquely installing the inverter circuit board, but also effectively controls the temperature rise of the inverter circuit board, thereby ensuring reliable operation of the product.
- Sexuality which is conducive to the miniaturization of the product; and the use of two parts of the mounting bracket and the mounting base to realize the tilting installation of the inverter circuit board, the structure is simple, the mold making and maintenance are simple.
- microwave oven provided by the above embodiment of the present invention further has the following additional technical features:
- the front end of the air hood is provided with an air guiding inlet disposed opposite to the air outlet of the cooling fan, and the end of the air hood is open to communicate with the air guiding inlet. Air outlet.
- the air guiding inlet on the air guiding hood is opposite to the air outlet of the cooling fan, so that the cold air blown by the cooling fan is directly blown to the inverter circuit board through the air guiding inlet on the air guiding hood, effectively controlling the frequency converter
- the circuit board is cooled to ensure the efficiency of cooling the inverter circuit board.
- the hot air after heat exchange by the inverter circuit board is blown out through the air guiding outlet on the air guiding hood.
- an air inlet passage is formed between a cover of the microwave oven and a sidewall of the cooking chamber, and an air inlet connected to the air inlet passage is defined in a bottom plate of the microwave oven.
- the air inlet of the cooling fan faces the air inlet passage.
- the air inlet of the cooling fan is disposed toward the air inlet passage, so that the external low temperature air is sucked into the air inlet passage formed between the outer cover and the side wall of the cooking chamber from the air inlet, and then cooled by the cooling fan.
- the air outlet is blown to the inverter circuit board, because the air guiding inlet on the air guiding hood is facing the cooling air
- the low temperature air enters the air hood, and the inverter circuit board located under the air hood is cooled and cooled, and the hot air after the heat exchange of the inverter circuit board is blown out through the air guiding outlet on the air hood to realize Effective cooling of the inverter board.
- the air hood includes two opposite side plates and a cover plate connected to the two side plates, the front end of the cover plate is open with the air guiding inlet, and The plate surface of the cover plate is gradually inclined upward from the rear to the front.
- the plate surface of the cover of the air hood is gradually inclined upward from the rear to the front, that is, the air guiding inlet on the cover gradually expands outward, thereby expanding the area of the air guiding inlet, thereby increasing the air guiding.
- the inlet enters the air volume in the air hood, and along the flow direction of the wind in the air hood, the surface of the cover plate gradually slopes downward, which is beneficial to improve the flow direction of the wind, so that the wind is directly blown under the air hood.
- On the inverter circuit board which improves the heat dissipation effect on the inverter board.
- the rear panel of the microwave oven is provided with an air outlet communicating with the air outlet, so that the hot air after heat exchange of the inverter circuit board is blown out through the air outlet. Thereafter, it is discharged to the outside of the microwave oven through the air outlet on the rear panel of the microwave oven.
- the mounting bracket is provided with a guiding inclined surface which is gradually inclined downward from the front to the rear, and the mounting base is supported on the guiding inclined surface.
- the end of the guiding bevel is provided with an upwardly extending inverted buckle, the end of the mounting base abuts against the inverted buckle, and the end of the mounting base is provided for limiting the installation A bump that moves left and right on the base.
- the mounting base is supported on the guiding inclined surface of the mounting bracket, and the buckle on the guiding inclined surface and the protrusion on the mounting base realize the limiting action on the mounting base, and the mounting base is ensured on the mounting bracket.
- the installation is robust; and the two parts of the mounting bracket and the mounting base are used to realize the technical solution of tilting the inverter circuit board, the structure is simple, the mold making and maintenance are simple.
- the mounting base is formed with an upper end opening mounting slot, the inverter circuit board is located in the mounting slot, and the air guiding cover is mounted above the mounting base, and The mounting base is snapped.
- the inverter circuit board is installed in the installation slot formed on the mounting base to ensure the firmness of the installation of the inverter circuit board; the air guiding cover is mounted on the mounting base by the fixing manner of the clamping, and the structure is simple and firm. .
- the electrical room is provided with a plurality of the magnetrons, a plurality of the frequency converter components, and a plurality of the magnetrons and a plurality of the frequency converter components for cooling A plurality of said cooling fans.
- an upper portion and a lower portion of the electric chamber are respectively provided with a magnetron, and a cooling fan is disposed on each side of the magnetron at the upper portion, and the magnetic portion is located at a lower portion.
- a drive assembly is disposed on each side of the control tube.
- FIG. 1 is a partial perspective structural view of a microwave oven according to an embodiment of the present invention.
- Figure 2 is a front view showing the structure of the inverter component of the microwave oven shown in Figure 1;
- FIG. 3 is a schematic exploded view of the frequency converter assembly of the microwave oven of FIG. 1.
- a microwave oven having a cooking chamber 10 and an electric chamber 11 behind the cooking chamber 10 is provided according to some embodiments of the present invention.
- the electric chamber 11 is provided with a magnetron 12 and a frequency converter assembly. 13 and cooling fan 14.
- the inverter component 13 includes a mounting bracket 131, a mounting base 132, a frequency converter circuit board 133, and an air guiding cover 134.
- the mounting bracket 131 is mounted on the bottom plate 15 of the microwave oven; the mounting base 132 is obliquely mounted on the mounting bracket 131; the inverter circuit board 133 is mounted on the mounting base 132 and disposed obliquely with respect to the bottom plate 15 of the microwave oven; The 134 is disposed above the inverter circuit board 133 for guiding the cold air blown by the cooling fan 14 to the inverter circuit board 133.
- the inverter circuit board 133 is mounted on the tilting mounting base 132, that is, the inverter circuit board 133 is mounted on the microwave oven bottom plate 15 through the mounting bracket 131 and the mounting base 132, and is vertical.
- the height of the inverter circuit board 133 is effectively reduced, and the installation space of the inverter circuit board 133 is limited due to the small installation space of the microwave oven, and the installation space is insufficient, so that the product structure is further improved.
- the cooling fan 14 located above the inverter circuit board 133 can pass through the inverter circuit board.
- the air guiding cover 134 above the 133 is effective for cooling the inverter circuit board 133, and avoids the problem that the performance of the inverter circuit board 133 is degraded due to excessive temperature rise when the inverter circuit board 133 is horizontally placed, thereby ensuring product operation. Reliability.
- the microwave oven provided by the present invention not only solves the problem of insufficient installation space of the inverter circuit board 133, but also effectively controls the temperature rise of the inverter circuit board 133 by tilting the inverter circuit board, thereby ensuring product work.
- the reliability of the product is also advantageous for miniaturization of the product; and the two components of the mounting bracket 131 and the mounting base 132 are used to realize the tilting installation of the inverter circuit board 133, the structure is simple, and the mold making and maintenance are simple.
- the front end of the air guiding cover 134 is provided with an air guiding inlet 1341 opposite to the air outlet of the cooling fan 14, and the end of the air guiding cover 134 is opened and guided.
- the air inlet 1342 is connected to the air inlet 1341.
- the air guiding inlet 1341 on the air guiding hood 134 is disposed opposite to the air outlet of the cooling fan 14, so that the cold air blown by the cooling fan 14 directly passes through the air guiding inlet 1341 on the air guiding hood 134. Blowing to the inverter circuit board 133, effectively cooling the inverter circuit board 133, ensuring the efficiency of cooling the inverter circuit board 133, and the hot air passing through the air conduction cover 134 after the heat exchange of the inverter circuit board 133 The outlet 1342 is blown out, as indicated by the thick arrow in Fig. 2, indicating the flow direction of the air.
- an air inlet passage 16 is formed between a casing (not shown) of the microwave oven and a side wall of the cooking chamber 10, and the bottom plate 15 of the microwave oven is open to communicate with the air inlet passage 16.
- the air inlet 151, the air inlet of the cooling fan 14 faces the air inlet duct 16.
- the air inlet of the cooling fan 14 is disposed toward the air inlet passage 16 such that the external low temperature air is sucked from the air inlet 151 into the air inlet passage 16 formed between the outer casing and the side wall of the cooking chamber 10, and then passed through the cooling fan 14. After that, the air outlet of the cooling fan 14 is blown toward the inverter circuit board 133. Since the air guiding inlet 1341 on the air guiding cover 134 faces the air outlet of the cooling fan 14, the low temperature air enters the air guiding cover 134, and the air is located in the air guiding cover 134.
- the inverter circuit board 133 under the cover 134 is cooled and cooled, and the hot air exchanged by the inverter circuit board 133 is blown out through the air outlet 1342 on the air hood 134, as indicated by the thick arrow in FIG.
- the flow direction realizes effective cooling of the inverter circuit board 133.
- the air guiding cover 134 includes two opposite side plates 1343 and a cover plate 1344 connected to the two side plates 1343.
- the front end of the cover plate 1344 is opened.
- the air inlet is 1341, and the plate surface of the cover 1344 is gradually inclined upward from the rear to the front.
- the plate surface of the cover plate 1344 of the air hood 134 is gradually inclined upward from the rear to the front, that is, the air guiding inlet 1341 on the cover plate 1344 is gradually expanded outward, thereby expanding the area of the air guiding inlet 1341, thereby increasing
- the air volume entering the air hood 134 from the air guiding inlet 1341 is increased, and along the flow direction of the wind in the air hood 134, the surface of the cover plate 1344 is gradually inclined downward, which is advantageous for improving the wind flow direction, so that the wind Directly blowing onto the inverter circuit board 133 located below the air guiding hood 134, thereby improving the heat dissipation effect on the inverter circuit board 133.
- an air exhaust port communicating with the air guiding outlet 1342 is opened on a rear plate (not shown) of the microwave oven, so that the hot air after heat exchange by the inverter circuit board 133 is blown out through the air guiding outlet 1342. After the cover 134, it is discharged to the outside of the microwave oven by the air discharge port on the rear panel of the microwave oven.
- the mounting bracket 131 is provided with a guiding inclined surface 1311 which is gradually inclined downward from the front to the rear, and the mounting base 132 is supported on the guiding inclined surface 1311.
- the end of the guiding slope 1311 is provided with an upwardly extending inverted buckle 1312.
- the end of the mounting base 132 abuts against the inverted buckle 1312, and the end of the mounting base 132 is provided.
- the mounting base 132 is supported on the guiding inclined surface 1311 of the mounting bracket 131, and the limiting position of the mounting base 132 is achieved by the undercut 1312 disposed on the guiding inclined surface 1311 and the protrusion 1321 on the mounting base 132.
- the securing of the mounting base 132 on the mounting bracket 131 is ensured; and the technical solution of tilting the inverter circuit board 133 by using the two components of the mounting bracket 131 and the mounting base 132 is adopted, the structure is simple, and the mold making and maintenance are simple.
- the mounting base 132 is formed with an upper opening opening slot 1322.
- the inverter circuit board 133 is located in the mounting slot 1322, and the air guiding cover 134 is mounted above the mounting base 132. And is engaged with the mounting base 132.
- the side wall of the mounting groove 1322 of the mounting base 132 is provided with a buckle 1323.
- the side plate 1343 of the air guiding cover 134 is provided with a card hole 1345, and the buckle 1323 is engaged with the card hole 1345.
- the inverter circuit board 133 is mounted in the mounting groove 1322 formed on the mounting base 132 to ensure the firmness of the installation of the inverter circuit board 133; the air guiding cover 134 is mounted on the mounting base 132 by the fastening manner of the clamping.
- the structure is simple and firm.
- the electrical room 11 is provided with a plurality of magnetrons 12, a plurality of frequency converter assemblies 13 and a plurality of cooling fans for cooling the plurality of magnetrons 12 and the plurality of frequency converter assemblies 13. 14.
- a magnetron 12 is disposed on an upper portion and a lower portion of the electric chamber 11, and a cooling fan 14 is disposed on each of the two sides of the magnetron 12 at the upper portion.
- a frequency converter assembly 13 is respectively disposed on both sides of the magnetron 12.
- the cooling fan 14 is provided with two or more air outlets, one of which is opposite to the air guiding inlet 1341 on the air guiding hood 134, and the cold air blown from the air outlet is used to cool the inverter circuit.
- the plate 133 has a second air outlet communicating with the magnetron 12, and the cold air blown from the air outlet is used to cool the magnetron 12, thereby simultaneously reducing the temperature of the magnetron 12 and the inverter assembly 13 at the same time. purpose.
- the microwave oven mounts the inverter circuit board on the tilting mounting base, that is, the inverter circuit board is installed on the microwave oven bottom plate through the mounting bracket and the mounting base, and is located in the inverter.
- the air hood above the circuit board effectively cools the inverter circuit board, which not only solves the problem of insufficient installation space of the inverter circuit board, but also effectively controls the temperature rise of the inverter circuit board, thereby ensuring product work.
- Reliability which is conducive to the miniaturization of products;
- the technical solution of tilting the inverter circuit board is realized by two parts of the mounting bracket and the mounting base, and the structure is simple, and the mold making and maintenance are simple.
- connection may be a fixed connection, a detachable connection, or an integral connection. , or electrical connection; can be directly connected, or indirectly connected through an intermediary.
- connecting may be a fixed connection, a detachable connection, or an integral connection. , or electrical connection; can be directly connected, or indirectly connected through an intermediary.
- the description of the terms “one embodiment”, “some embodiments”, “specific embodiments” and the like means that the specific features, structures, materials, or characteristics described in connection with the embodiments or examples are included in the present invention. At least one embodiment or example.
- the schematic representation of the above terms does not necessarily refer to the same embodiment or example.
- the particular features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples.
Abstract
Description
Claims (10)
- 一种微波炉,所述微波炉具有烹饪腔和位于所述烹饪腔后方的电气室,所述电气室内设有磁控管、变频器组件及冷却风扇,其特征在于,所述变频器组件包括:安装支架,安装在所述微波炉的底板上;安装底座,倾斜安装在所述安装支架上;变频器电路板,安装在所述安装底座上,并相对于所述微波炉的底板倾斜设置;和导风罩,罩设于所述变频器电路板上方,用于将所述冷却风扇吹出的冷风导流至所述变频器电路板。
- 根据权利要求1所述的微波炉,其特征在于,所述导风罩的前端开设有与所述冷却风扇的出风口相对设置的导风入口,所述导风罩的末端开设有与所述导风入口相连通的导风出口。
- 根据权利要求2所述的微波炉,其特征在于,所述微波炉的外罩与所述烹饪腔的侧壁之间形成有进风通道,所述微波炉的底板上开设有与所述进风通道相连通的进风口,所述冷却风扇的吸风口朝向所述进风通道。
- 根据权利要求2所述的微波炉,其特征在于,所述导风罩包括两相对设置的侧板和与两所述侧板相连接的盖板,所述盖板的前端开设有所述导风入口,且所述盖板的板面由后向前逐渐向上倾斜。
- 根据权利要求4所述的微波炉,其特征在于,所述微波炉的后板上开设有与所述导风出口相连通的排风口。
- 根据权利要求1所述的微波炉,其特征在于,所述安装支架上设有由前向后逐渐向下倾斜的导向斜面,所述安装底座支撑在所述导向斜面上。
- 根据权利要求6所述的微波炉,其特征在于,所述导向斜面的末端设有向上延伸的倒扣,所述安装底座的末端抵在所述倒扣上,且所述安装底座的末端设有用于限制所述安装底座左右运动的凸块。
- 根据权利要求7所述的微波炉,其特征在于,所述安装底座上形成有上端开口的安装槽,所述变频器电路板位于所述安装槽内,所述导风罩安装在所述安装底座的上方,并与所述安装底座卡接。
- 根据权利要求1至8中任一项所述的微波炉,其特征在于,所述电气室内设有多个所述磁控管、多个所述变频器组件和用于对多个所述磁控管和多个所述变频器组件降温的多个所述冷却风扇。
- 根据权利要求9所述的微波炉,其特征在于,所述电气室的上部和下部分别设有一所述磁控管,位于上部的所述磁控管的两侧分别设有一所述冷却风扇,位于下部的所述磁控管的两侧分别设有一所述变频器组件。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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JP2018528291A JP6602980B2 (ja) | 2015-12-08 | 2016-06-24 | 電子レンジ |
US15/997,682 US10805991B2 (en) | 2015-12-08 | 2018-06-04 | Microwave oven |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
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CN201510898286.4A CN105387492B (zh) | 2015-12-08 | 2015-12-08 | 微波炉 |
CN201521013277.4U CN205191665U (zh) | 2015-12-08 | 2015-12-08 | 微波炉 |
CN201510898286.4 | 2015-12-08 | ||
CN201521013277.4 | 2015-12-08 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US15/997,682 Continuation US10805991B2 (en) | 2015-12-08 | 2018-06-04 | Microwave oven |
Publications (1)
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WO2017096779A1 true WO2017096779A1 (zh) | 2017-06-15 |
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PCT/CN2016/087164 WO2017096779A1 (zh) | 2015-12-08 | 2016-06-24 | 微波炉 |
Country Status (3)
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US (1) | US10805991B2 (zh) |
JP (1) | JP6602980B2 (zh) |
WO (1) | WO2017096779A1 (zh) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
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US10904959B2 (en) * | 2016-11-30 | 2021-01-26 | Illinois Tool Works, Inc. | Apparatus and system for solid state oven electronics cooling |
CN106900099B (zh) * | 2017-02-28 | 2020-10-23 | 广东美的厨房电器制造有限公司 | 烹饪装置 |
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2018
- 2018-06-04 US US15/997,682 patent/US10805991B2/en active Active
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Also Published As
Publication number | Publication date |
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US10805991B2 (en) | 2020-10-13 |
JP2018536833A (ja) | 2018-12-13 |
US20180288834A1 (en) | 2018-10-04 |
JP6602980B2 (ja) | 2019-11-06 |
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