CN211019721U

CN211019721U - PCBA subassembly and electric flame kitchen

Info

Publication number: CN211019721U
Application number: CN201921202044.7U
Authority: CN
Inventors: 卢驭龙
Original assignee: Shenzhen Yulong Electric Flame Technology Co ltd
Current assignee: Electric fire technology (Suzhou) Co.,Ltd.
Priority date: 2019-07-26
Filing date: 2019-07-26
Publication date: 2020-07-14
Anticipated expiration: 2029-07-26
Also published as: WO2021017865A1

Abstract

The utility model discloses a PCBA component, which comprises a metal shell with a holding cavity and a printed circuit board which is arranged in the holding cavity and connected with the metal shell; the metal shell is provided with an air inlet and an air outlet, the air inlet and the air outlet are respectively positioned at two opposite ends of the metal shell, and the air inlet and the air outlet are both communicated with the accommodating cavity; and the air inlet and/or the air outlet are/is provided with a cooling fan. The utility model also discloses an electric flame kitchen that contains above-mentioned PCBA subassembly. Because printed circuit board installs in metal casing's holding intracavity, consequently printed circuit board has metal casing's shielding effect all around, and the high pressure that the transformer of electric flame kitchen produced can't produce the influence to circuit and components and parts on the printed circuit board in the metal casing owing to there is metal casing's shielding, and then has guaranteed PCBA subassembly's normal work.

Description

PCBA subassembly and electric flame kitchen

Technical Field

The utility model relates to an electrical heating field especially relates to a PCBA subassembly and electric flame kitchen.

Background

The principle of the electric flame stove is that high pressure generates electric flame to work, and the inventor finds that when the electric flame stove works, a PCBA (Printed Circuit Board + Assembly) component in the electric flame stove often works unstably, so that normal use of the electric flame stove is influenced, the electric flame stove cannot normally control a transformer to generate proper high pressure, and further cannot generate required electric flame.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a PCBA subassembly aims at solving prior art, and the electric flame kitchen is at the during operation, and the PCBA subassembly frequent work unstable problem in it.

To achieve the purpose, the utility model adopts the following technical proposal:

the PCBA assembly comprises a metal shell with an accommodating cavity and a printed circuit board arranged in the accommodating cavity and connected with the metal shell; the metal shell is provided with an air inlet and an air outlet, the air inlet and the air outlet are respectively positioned at two opposite ends of the metal shell, and the air inlet and the air outlet are both communicated with the accommodating cavity; and the air inlet and/or the air outlet are/is provided with a cooling fan.

Furthermore, the metal shell is provided with a first connecting through hole, the printed circuit board is provided with a first threaded hole, a first connecting screw is arranged between the printed circuit board and the metal shell, and the first connecting screw penetrates through the first connecting through hole and is in threaded connection with the first threaded hole.

Furthermore, the metal shell is provided with an installation block, and the installation block is provided with an installation hole.

Further, the metal shell comprises a first shell and a second shell connected with the first shell; the second shell and the first shell enclose to form the accommodating cavity.

Furthermore, a second connecting through hole is formed in the first shell, a second threaded hole is formed in the second shell, a second connecting screw is arranged between the first shell and the second shell, and the second connecting screw penetrates through the second connecting through hole and is in threaded connection with the second threaded hole.

Further, first shell is equipped with first joint spare, the second shell be equipped with the second joint spare of first joint spare looks joint.

Furthermore, the metal shell is provided with a wire harness hole.

Further, the metal shell is an aluminum shell.

Another object of the present invention is to provide an electric flame stove, which comprises a case, a transformer disposed in the case, and the above-mentioned PCBA assembly; the PCBA component is arranged in the case, and the transformer is electrically connected with the PCBA component; the metal shell is arranged between the printed circuit board and the transformer.

Furthermore, a connecting wire is arranged between the transformer and the printed circuit board, and a metal shielding layer is sleeved outside the connecting wire.

The utility model has the advantages that: because printed circuit board installs in metal casing's holding intracavity, consequently printed circuit board has metal casing's shielding effect all around, and the high pressure that the transformer of electric flame kitchen produced can't produce the influence to circuit and components and parts on the printed circuit board in the metal casing owing to there is metal casing's shielding, and then has guaranteed PCBA subassembly's normal work.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a schematic structural view of a PCBA assembly in an embodiment of the present invention;

FIG. 2 is a cross-sectional view of a PCBA assembly in an embodiment of the invention;

fig. 3 is a schematic structural diagram of a first housing according to an embodiment of the present invention;

fig. 4 is a schematic structural view of the inside of a case of an electric flame cooker according to an embodiment of the present invention;

in the figure:

1. a metal housing; 11. an accommodating cavity; 12. an air inlet; 13. an air outlet; 14. mounting blocks; 141. mounting holes; 15. a first housing; 16. a second housing; 17. a second connection screw; 18. a wire harness hole; 2. a printed circuit board; 3. a heat radiation fan; 4. a first connection screw; 5. a chassis; 6. a transformer; 700. a PCBA component.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention.

Furthermore, the terms "first", "second" and "first" are used 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. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

The following describes the implementation of the present invention in detail with reference to specific embodiments.

Through a plurality of experiments, the inventor finds that the reason that the PCBA component is unstable in operation is that the PCBA component is easily influenced by high-voltage electromagnetism generated by a transformer and cannot stably operate.

As shown in fig. 1-4, an embodiment of the present invention provides a PCBA assembly 700, which includes a metal housing 1 having a receiving cavity 11, and a printed circuit board 2 disposed in the receiving cavity 11 and connected to the metal housing 1; an air inlet 12 and an air outlet 13 are formed in the metal shell 1, the air inlet 12 and the air outlet 13 are respectively located at two opposite ends of the metal shell 1, and the air inlet 12 and the air outlet 13 are both communicated with the accommodating cavity 11; the intake opening 12 and/or the outtake opening 13 are/is provided with a heat radiation fan 3.

The utility model discloses an in the embodiment, when PCBA subassembly 700 was applied to the electric flame kitchen (PCBA subassembly 700 air intake 12 and air outlet 13 all not facing to transformer 6), because printed circuit board 2 installs in metal casing 1's holding chamber 11, consequently printed circuit board 2 has metal casing 1's shielding effect all around, the high pressure that transformer 6 of electric flame kitchen produced is owing to there is metal casing 1's shielding, can't produce the influence to circuit and components and parts on the printed circuit board 2 in the metal casing 1, and then guaranteed PCBA subassembly 700's normal work. Meanwhile, the circuit and the components on the printed circuit board 2 of the PCBA assembly 700 are ensured not to influence other electronic elements and circuits, so that the electric flame stove can work stably.

Meanwhile, as the metal shell 1 is provided with the air inlet 12 and the air outlet 13, and the heat radiation fan 3 is installed on the air inlet 12 and/or the air outlet 13, the heat radiation fan 3 can perform ventilation effect on the accommodating cavity 11 when the PCBA assembly 700 works, so that heat in the accommodating cavity 11 is timely emitted outwards, and the phenomenon that the normal work of the electric flame stove is influenced due to the overhigh local temperature of the PCBA assembly 700 is avoided.

Further, please refer to fig. 2, as another embodiment of the PCBA assembly 700 provided by the present invention, a first connecting through hole is formed in the metal housing 1, a first threaded hole is formed in the printed circuit board 2, a first connecting screw 4 is disposed between the printed circuit board 2 and the metal housing 1, and the first connecting screw 4 penetrates through the first connecting through hole and is in threaded connection with the first threaded hole. That is, the printed circuit board 2 is fixedly mounted on the metal housing 1 by the first connection screw 4. Of course, in other embodiments, the detachable connection manner such as snap connection may be adopted.

Further, referring to fig. 1, as another embodiment of the PCBA assembly 700 provided by the present invention, a mounting block 14 is disposed on the metal housing 1, and the mounting block 14 is provided with a mounting hole 141. Mounting holes 141 on mounting block 14 facilitate mounting and securing of PCBA assembly 700, such as to be fixedly attached to case 5 of a flame burner when PCBA assembly 700 is mounted to the flame burner.

Further, referring to fig. 2, as another embodiment of the PCBA assembly 700 provided by the present invention, the metal shell 1 includes a first shell 15 and a second shell 16 connected to the first shell 15; the second housing 16 and the first housing 15 enclose to form the accommodating cavity 11. The metal shell 1 is formed by connecting the first shell 15 and the second shell 16, so that the metal shell 1 can be disassembled to facilitate the installation of the printed circuit board 2 and the replacement and maintenance of components.

Further, please refer to fig. 2, as another embodiment of the PCBA assembly 700 provided in the present invention, the first housing 15 has a second connecting through hole, the second housing 16 has a second threaded hole, a second connecting screw 17 is disposed between the first housing 15 and the second housing 16, and the second connecting screw 17 penetrates through the second connecting through hole and is in threaded connection with the second threaded hole. The first housing 15 and the second housing 16 are connected by the second connecting screw 17, so that the printed circuit board 2 and the related components can be quickly disassembled and assembled.

Further, as the utility model provides a PCBA subassembly 700's another kind of embodiment, first shell 15 is equipped with first joint spare, and second shell 16 is equipped with the second joint spare with first joint spare looks joint. The first clamping piece and the second clamping piece can be respectively a clamping groove and a clamping bulge.

Further, referring to FIG. 1, as another embodiment of a PCBA assembly 700 in accordance with the present invention, a wire harness hole 18 is formed in metal housing 1. Routing of the PCBA assembly 700, for example, to electrically connect with devices such as the transformer 6 within the electric flame stove, is facilitated.

Further, referring to fig. 1, as another embodiment of the PCBA assembly 700 provided by the present invention, the metal housing 1 is an aluminum housing. The metal casing 1 may be an aluminum case, which has the characteristics of light weight and good shielding effect.

As shown in fig. 4, an embodiment of the present invention provides an electric flame stove, which is characterized by comprising a case 5, a transformer 6 disposed in the case 5, and a PCBA assembly 700 in the above embodiment; the PCBA assembly 700 is arranged in the case 5, and the transformer 6 is electrically connected with the PCBA assembly 700; the printed circuit board 2 and the transformer 6 have a metal housing 1 therebetween. During installation, the metal shell 1 is located between the transformer 6 and the printed circuit board 2, and the air inlet 12 or the air outlet 13 is not opposite to the transformer 6, so that the best shielding effect of the metal shell 1 on the printed circuit board 2 is ensured, and meanwhile, the PCBA assembly 700 can be cooled. Because inside temperature is higher when the electric flame kitchen uses, the work that PCBA subassembly 700 can be stable has greatly been guaranteed in radiator fan 3's setting. It will be appreciated that the electric flame stove also comprises a burner electrically connected to the transformer 6, the ion needle of the burner generating the electric flame.

Further, refer to fig. 4, as the utility model provides a another kind of embodiment of electric flame stove is equipped with the connecting wire between transformer 6 and the printed circuit board 2, and the outside cover of connecting wire is equipped with metallic shield layer, and then avoids the connecting wire between transformer 6 and the printed circuit board 2 to receive the highly compressed electromagnetic influence that transformer 6 produced.

It is to be understood that aspects of the present invention may be practiced otherwise than as specifically described.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

The PCBA component is characterized by comprising a metal shell with an accommodating cavity and a printed circuit board arranged in the accommodating cavity and connected with the metal shell; the metal shell is provided with an air inlet and an air outlet, the air inlet and the air outlet are respectively positioned at two opposite ends of the metal shell, and the air inlet and the air outlet are both communicated with the accommodating cavity; and the air inlet and/or the air outlet are/is provided with a cooling fan.
2. The PCBA assembly as recited in claim 1, wherein the metal shell defines a first connecting through hole, the printed circuit board defines a first threaded hole, and a first connecting screw extends through the first connecting through hole and is in threaded engagement with the first threaded hole.
3. The PCBA assembly as recited in claim 1, wherein the metal shell is provided with a mounting block, the mounting block defining a mounting hole.
4. The PCBA assembly as recited in claim 1, wherein the metal shell includes a first shell and a second shell connected to the first shell; the second shell and the first shell enclose to form the accommodating cavity.
5. The PCBA assembly as recited in claim 4, wherein the first housing defines a second connection through-hole, the second housing defines a second threaded hole, and a second connection screw is disposed between the first housing and the second housing, the second connection screw extending through the second connection through-hole and being in threaded connection with the second threaded hole.
6. The PCBA assembly as recited in claim 4, wherein the first housing is provided with a first snap member, and the second housing is provided with a second snap member that snaps with the first snap member.
7. The PCBA assembly as recited in claim 1, wherein the metal shell is provided with a wire harness aperture.
8. A PCBA component as claimed in any of claims 1 to 7, in which the metal housing is an aluminium casing.
9. An electric flame stove comprising a cabinet, a transformer disposed within the cabinet, and a PCBA assembly as claimed in any one of claims 1-8; the PCBA component is arranged in the case, and the transformer is electrically connected with the PCBA component; the metal shell is arranged between the printed circuit board and the transformer.
10. The electric flame stove according to claim 9, wherein a connecting wire is arranged between the transformer and the printed circuit board, and a metal shielding layer is sleeved outside the connecting wire.