WO2017096779A1 - 微波炉 - Google Patents

微波炉 Download PDF

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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
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WO
WIPO (PCT)
Prior art keywords
microwave oven
air
circuit board
mounting base
inverter circuit
Prior art date
Application number
PCT/CN2016/087164
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English (en)
French (fr)
Inventor
李伟
安明波
凌奇宏
Original Assignee
广东美的厨房电器制造有限公司
美的集团股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Priority claimed from CN201510898286.4A external-priority patent/CN105387492B/zh
Priority claimed from CN201521013277.4U external-priority patent/CN205191665U/zh
Application filed by 广东美的厨房电器制造有限公司, 美的集团股份有限公司 filed Critical 广东美的厨房电器制造有限公司
Priority to JP2018528291A priority Critical patent/JP6602980B2/ja
Publication of WO2017096779A1 publication Critical patent/WO2017096779A1/zh
Priority to US15/997,682 priority patent/US10805991B2/en

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    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00Heating by electric, magnetic or electromagnetic fields
    • H05B6/64Heating using microwaves
    • H05B6/642Cooling of the microwave components and related air circulation systems
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00Heating by electric, magnetic or electromagnetic fields
    • H05B6/64Heating using microwaves
    • H05B6/6426Aspects 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

一种微波炉,包括烹饪腔(10)和电气室(11),电气室(11)内设有磁控管(12)、变频器组件(13)及冷却风扇(14),变频器组件(13)包括:安装在微波炉的底板(15)上的安装支架(131)、倾斜安装在安装支架(131)上的安装底座(132)、安装在安装底座(132)上并相对于微波炉的底板(15)倾斜设置的变频器电路板(133)以及罩设于变频器电路板(133)上方的导风罩(134),导风罩(134)用于将冷却风扇(14)吹出的冷风导流至变频器电路板(133)。该微波炉既能解决变频器电路板(133)安装空间不足的问题,又能有效控制变频器电路板(133)的温升。

Description

微波炉
本申请要求于2015年12月08日提交中国专利局、申请号为201510898286.4、发明创造名称为“微波炉”的中国专利申请的优先权,其全部内容通过引用结合在本申请中;同时本申请要求于2015年12月08日提交中国专利局、申请号为201521013277.4、发明创造名称为“微波炉”的中国专利申请的优先权,其全部内容通过引用结合在本申请中。
技术领域
本发明涉及厨房用具领域,更具体而言,涉及一种微波炉。
背景技术
现有的用于餐馆、便利店等需要快速加热的商用场所的微波炉,通常采用两个或两个以上个变频器,并在原高压变压器的位置上安装该变频器,以尽量不改动原有结构。然而,由于微波炉产品的安装空间较小,变频器的尺寸较大,变频器竖直放置所需安装空间较大,导致变频器安装空间不足,不利于产品的小型化;变频器水平放置不利于变频器的散热降温,而变频器温升过高会导致变频器性能下降。
发明内容
本发明旨在至少解决现有技术中存在的技术问题之一。
为此,本发明的目的在于,提供一种既解决变频器电路板安装空间不足的问题,又有效控制变频器电路板温升的微波炉。
为实现上述目的,本发明的实施例提供了一种微波炉,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,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。
本发明上述实施例提供的微波炉,将变频器电路板安装在倾斜放置的安装底座上,即将变频器电路板通过安装支架和安装底座倾斜安装在微波炉底板上,与竖直放置变频器电路板相比,有效降低了变频器电路板的高度,解决了因微波炉的安装空间较小导致变频器电路板安装空间局限、安装空间不足的问题,使得产品的结构更加紧凑,且变频器电路板高度的降低,利于产品的小型化;与水平放置的变频器电路板相比,使得位于变频器电路板上方的冷却风扇,能够通过位于变频器电路板上方的导风罩,来有效对变频器电路板进行降温,避免变频器电路板水平放置时因温升过高而导致变频器电路板性能下降的问题,保证了产品工作的可靠性。换言之,本发明提供的微波炉,通过将变频器电路板倾斜安装,既解决了变频器电路板安装空间不足的问题,又有效控制了变频器电路板的温升,从而既保证了产品工作的可靠性,又利于产品的小型化;并且采用安装支架和安装底座两个部件,来实现变频器电路板倾斜安装的技术方案,结构简单,模具制作及维修简易。
另外,本发明上述实施例提供的微波炉还具有如下附加技术特征:
根据本发明的一个实施例,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。
上述实施例中,导风罩上的导风入口与冷却风扇的出风口相对设置,使冷却风扇吹出的冷风,直接经导风罩上的导风入口吹向变频器电路板,有效对变频器电路板进行降温,保证了对变频器电路板降温的效率,经变频器电路板换热后的热风经导风罩上的导风出口吹出。
根据本发明的一个实施例,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。
上述实施例中,冷却风扇的吸风口朝向进风通道设置,使得外部低温空气从进风口吸入外罩与烹饪腔的侧壁之间形成的进风通道内,再经冷却风扇后,从冷却风扇的出风口吹向变频器电路板,由于导风罩上的导风入口正对冷却风 扇的出风口,低温空气进入导风罩内,对位于导风罩下方的变频器电路板进行冷却降温,经变频器电路板换热后的热风经导风罩上的导风出口吹出,实现对变频器电路板的有效降温。
根据本发明的一个实施例,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。
上述实施例中,导风罩的盖板的板面由后向前逐渐向上倾斜,即盖板上的导风入口逐渐向外扩张,扩大了导风入口的面积,从而增大了由导风入口进入导风罩内的风量,且沿着风在导风罩内的流动方向,盖板的板面逐渐向下倾斜,有利于改善风的流向,使得风直接吹向位于导风罩下方的变频器电路板上,从而提升了对变频器电路板的散热效果。
根据本发明的一个实施例,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,使得经变频器电路板换热后的热风,经导风出口吹出导风罩后,由微波炉的后板上的排风口排出至微波炉外部。
根据本发明的一个实施例,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。
根据本发明的一个实施例,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。
上述实施例中,安装底座支撑在安装支架的导向斜面上,并通过设在导向斜面上的倒扣和安装底座上的凸块,实现对安装底座的限位作用,保证安装底座在安装支架上安装的牢固性;并且采用安装支架和安装底座两个部件,实现变频器电路板倾斜安装的技术方案,结构简单,模具制作及维修简易。
根据本发明的一个实施例,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。
上述实施例中,变频器电路板安装在安装底座上形成的安装槽内,保证变频器电路板安装的牢固性;导风罩通过卡接的固定方式安装在安装底座上方,结构简单,固定牢固。
根据本发明的一个实施例,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。
根据本发明的一个实施例,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。
本发明的附加方面和优点将在下面的描述部分中变得明显,或通过本发明的实践了解到。
附图说明
本发明的上述和/或附加的方面和优点从结合下面附图对实施例的描述中将变得明显和容易理解,其中:
图1是本发明一个实施例所述的微波炉的局部立体结构示意图;
图2是图1所示微波炉中变频器组件的主视结构示意图;
图3是图1所示微波炉中变频器组件的分解结构示意图。
其中,图1至图3中附图标记与部件名称之间的对应关系为:
10烹饪腔,11电气室,12磁控管,13变频器组件,131安装支架,1311导向斜面,1312倒扣,132安装底座,1321凸块,1322安装槽,1323卡扣,133变频器电路板,134导风罩,1341导风入口,1342导风出口,1343侧板,1344盖板,1345卡孔,14冷却风扇,15底板,151进风口,16进风通道,图1和图2中的粗线箭头表示空气的流动方向。
具体实施方式
为了能够更清楚地理解本发明的上述目的、特征和优点,下面结合附图和具体实施方式对本发明进行进一步的详细描述。需要说明的是,在不冲突的情况下,本申请的实施例及实施例中的特征可以相互组合。
在下面的描述中阐述了很多具体细节以便于充分理解本发明,但是,本发明还可以采用其他不同于在此描述的方式来实施,因此,本发明的保护范围并不受下面公开的具体实施例的限制。
下面参照附图描述根据本发明一些实施例的微波炉。
如图1所示,根据本发明一些实施例提供的一种微波炉,所述微波炉具有烹饪腔10和位于烹饪腔10后方的电气室11,电气室11内设有磁控管12、变频器组件13及冷却风扇14。
其中,变频器组件13包括:安装支架131、安装底座132、变频器电路板133和导风罩134。
具体地,安装支架131安装在微波炉的底板15上;安装底座132倾斜安装在安装支架131上;变频器电路板133安装在安装底座132上,并相对于微波炉的底板15倾斜设置;导风罩134罩设于变频器电路板133上方,用于将冷却风扇14吹出的冷风导流至变频器电路板133。
本发明上述实施例提供的微波炉,将变频器电路板133安装在倾斜放置的安装底座132上,即将变频器电路板133通过安装支架131和安装底座132倾斜安装在微波炉底板15上,与竖直放置变频器电路板133相比,有效降低了变频器电路板133的高度,解决了因微波炉的安装空间较小导致变频器电路板133安装空间局限、安装空间不足的问题,使得产品的结构更加紧凑,且变频器电路板133高度的降低,利于产品的小型化;与水平放置的变频器电路板133相比,使得位于变频器电路板133上方的冷却风扇14,能够通过位于变频器电路板133上方的导风罩134,来有效对变频器电路板133进行降温,避免变频器电路板133水平放置时因温升过高而导致的变频器电路板133性能下降的问题,保证了产品工作的可靠性。换言之,本发明提供的微波炉,通过将变频器电路板倾斜安装,既解决了变频器电路板133安装空间不足的问题,又有效控制了变频器电路板133的温升,从而既保证了产品工作的可靠性,又利于产品的小型化;并且采用安装支架131和安装底座132两个部件,来实现变频器电路板133倾斜安装的技术方案,结构简单,模具制作及维修简易。
本发明的一些实施例中,如图1和图3所示,导风罩134的前端开设有与冷却风扇14的出风口相对设置的导风入口1341,导风罩134的末端开设有与导风入口1341相连通的导风出口1342。
上述实施例中,导风罩134上的导风入口1341与冷却风扇14的出风口相对设置,使经冷却风扇14吹出的冷风,直接经导风罩134上的导风入口1341 吹向变频器电路板133,有效对变频器电路板133进行降温,保证了对变频器电路板133降温的效率,经变频器电路板133换热后的热风经导风罩134上的导风出口1342吹出,如图2中粗线箭头所示,表示空气的流动方向。
进一步地,如图1所示,微波炉的外罩(图中未示出)与烹饪腔10的侧壁之间形成有进风通道16,微波炉的底板15上开设有与进风通道16相连通的进风口151,冷却风扇14的吸风口朝向进风通道16。
上述实施例中,冷却风扇14的吸风口朝向进风通道16设置,使得外部低温空气从进风口151吸入外罩与烹饪腔10的侧壁之间形成的进风通道16内,再经冷却风扇14后,从冷却风扇14的出风口吹向变频器电路板133,由于导风罩134上的导风入口1341正对冷却风扇14的出风口,低温空气进入导风罩134内,对位于导风罩134下方的变频器电路板133进行冷却降温,经变频器电路板133换热后的热风经导风罩134上的导风出口1342吹出,如图1中的粗线箭头所示,表示空气的流动方向,实现对变频器电路板133的有效降温。
本发明的一个具体实施例中,如图2和图3所示,导风罩134包括两相对设置的侧板1343和与两侧板1343相连接的盖板1344,盖板1344的前端开设有导风入口1341,且盖板1344的板面由后向前逐渐向上倾斜。
上述实施例中,导风罩134的盖板1344的板面由后向前逐渐向上倾斜,即盖板1344上的导风入口1341逐渐向外扩张,扩大了导风入口1341的面积,从而增大了由导风入口1341进入导风罩134内的风量,且沿着风在导风罩134内的流动方向,盖板1344的板面逐渐向下倾斜,有利于改善风的流向,使得风直接吹向位于导风罩134下方的变频器电路板133上,从而提升了对变频器电路板133的散热效果。
进一步地,微波炉的后板(图中未示出)上开设有与导风出口1342相连通的排风口,使得经变频器电路板133换热后的热风,经导风出口1342吹出导风罩134后,由微波炉的后板上的排风口排出至微波炉外部。
本发明的一些实施例中,如图2和图3所示,安装支架131上设有由前向后逐渐向下倾斜的导向斜面1311,安装底座132支撑在导向斜面1311上。
进一步地,如图1和图3所示,导向斜面1311的末端设有向上延伸的倒扣1312,安装底座132的末端抵在倒扣1312上,且安装底座132的末端设有 用于限制安装底座132左右运动的凸块1321。
上述实施例中,安装底座132支撑在安装支架131的导向斜面1311上,并通过设在导向斜面1311上的倒扣1312和安装底座132上的凸块1321,实现对安装底座132的限位作用,保证安装底座132在安装支架131上安装的牢固性;并且采用安装支架131和安装底座132两个部件实现变频器电路板133倾斜安装的技术方案,结构简单,模具制作及维修简易。
本发明的一个实施例中,如图3所示,安装底座132上形成有上端开口的安装槽1322,变频器电路板133位于安装槽1322内,导风罩134安装在安装底座132的上方,并与安装底座132卡接。
具体地,如图3所示,安装底座132的安装槽1322的侧壁上设有卡扣1323,导风罩134的侧板1343上设有卡孔1345,卡扣1323卡接在卡孔1345内。
上述实施例中,变频器电路板133安装在安装底座132上形成的安装槽1322内,保证变频器电路板133安装的牢固性;导风罩134通过卡接的固定方式安装在安装底座132上方,结构简单,固定牢固。
本发明的一些实施例中,电气室11内设有多个磁控管12、多个变频器组件13和用于对多个磁控管12和多个变频器组件13降温的多个冷却风扇14。
本发明的一个具体实施例中,如图1所示,电气室11的上部和下部分别设有一磁控管12,位于上部的磁控管12的两侧分别设有一冷却风扇14,位于下部的磁控管12的两侧分别设有一变频器组件13。
具体来讲,冷却风扇14设有两个或两个以上的出风口,其中一个出风口正对导风罩134上的导风入口1341,从该出风口吹出的冷空气用于冷却变频器电路板133,第二个出风口与磁控管12相连通,从该出风口吹出的冷空气用于冷却磁控管12,由此可以实现同时对磁控管12和变频器组件13同时降温的目的。
综上所述,本发明实施例提供的微波炉,将变频器电路板安装在倾斜放置的安装底座上,即将变频器电路板通过安装支架和安装底座倾斜安装在微波炉底板上,并通过位于变频器电路板上方的导风罩来有效对变频器电路板进行导风降温,既解决了变频器电路板安装空间不足的问题,又有效控制了变频器电路板的温升,从而既保证了产品工作的可靠性,又利于产品的小型化;并且采 用安装支架和安装底座两个部件实现变频器电路板倾斜安装的技术方案,结构简单,模具制作及维修简易。
在本发明的描述中,术语“多个”是指两个或两个以上。
在本说明书的描述中,除非另有规定或说明,术语“连接”、“安装”等均应做广义理解,例如,“连接”可以是固定连接,也可以是可拆卸连接,或一体地连接,或电连接;可以是直接相连,也可以通过中间媒介间接相连。对于本领域的普通技术人员而言,可以根据具体情况理解上述术语在本发明中的具体含义。
本说明书的描述中,需要理解的是,术语“上”、“下”、“前”、“后”、“左”、“右”等指示的方位或位置关系为基于附图所示的方位或位置关系,仅是为了便于描述本发明和简化描述,而不是指示或暗示所指的装置或单元必须具有特定的方向、以特定的方位构造和操作,因此,不能理解为对本发明的限制。
在本说明书的描述中,术语“一个实施例”、“一些实施例”、“具体实施例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或特点包含于本发明的至少一个实施例或示例中。在本说明书中,对上述术语的示意性表述不一定指的是相同的实施例或实例。而且,描述的具体特征、结构、材料或特点可以在任何的一个或多个实施例或示例中以合适的方式结合。
以上所述仅为本发明的优选实施例而已,并不用于限制本发明,对于本领域的技术人员来说,本发明可以有各种更改和变化。凡在本发明的精神和原则之内,所作的任何修改、等同替换、改进等,均应包含在本发明的保护范围之内。

Claims (10)

  1. 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。
  2. 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。
  3. 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。
  4. 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。
  5. 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。
  6. 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。
  7. 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。
  8. 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。
  9. 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。
  10. 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。
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