CN202883493U - Direct-current (DC) draught fan and heat dissipation device of electrical appliance - Google Patents
Direct-current (DC) draught fan and heat dissipation device of electrical appliance Download PDFInfo
- Publication number
- CN202883493U CN202883493U CN201220487695.7U CN201220487695U CN202883493U CN 202883493 U CN202883493 U CN 202883493U CN 201220487695 U CN201220487695 U CN 201220487695U CN 202883493 U CN202883493 U CN 202883493U
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- CN
- China
- Prior art keywords
- fan
- circuit board
- silica gel
- shell
- draught fan
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Lifetime
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Abstract
The utility model discloses a direct-current (DC) draught fan, and a heat dissipation device, comprising the DC draught fan, of an electrical appliance. The DC draught fan comprises a shell which is provided with a containing cavity used for fixing a circuit board, wherein a clearance between the containing cavity and the circuit board is sealed through a silica gel layer made of high-temperature resistant and oil resistant silica gel. The DC draught fan and the heat dissipation device of the electrical appliance can prevent oil smoke and water vapor from contacting the circuit board, and therefore the service life of the DC draught fan is prolonged.
Description
Technical field
The utility model relates to the heat dissipation technology field of electrical equipment, the particularly sink of a kind of dc fan and electrical equipment.
Background technique
In the prior art, dc fan is the main heat-dissipating part of the more abominable kitchen appliance of oil smoke, water vapour environment.Because the dc fan long-term work is in oil smoke, water vapour environment, and the circuit board in the dc fan often directly is fixed on the shell, there is the gap between this shell and the circuit board, therefore oil smoke, steam will contact with components and parts on the circuit board through this gap, cause damaging components and parts, thereby affect the life-span of the use of dc fan.
The model utility content
Main purpose of the present utility model is to provide a kind of oil smoke, steam of preventing to contact the dc fan that can increase the service life with circuit board.
To achieve these goals, the utility model provides a kind of dc fan, this dc fan comprises shell, and described shell is provided with the accommodating cavity for fixing circuit board, and the gap between this accommodating cavity and the circuit board seals by the layer of silica gel that high temperature resistant oil resistance silica gel forms.
Preferably, described shell also is provided with the wire lead slot that passes described shell for the external connection with described circuit board, and described silica gel also is arranged in the wire lead slot, with the external connection that seals described circuit board and the gap between the wire lead slot.
Preferably, described dc fan also comprises fan main body, and this fan main body comprises blower fan line bag, and this blower fan line bag is fixedly connected with described circuit board, and this circuit board is between described shell and blower fan line bag.
Preferably, the end face that described circuit board is relative with blower fan line bag is provided with components and parts, and described layer of silica gel also is arranged on the end face of described circuit board, to seal the components and parts of this end face.
Preferably, described dc fan is anti-flabellum dc fan.
The utility model also provides a kind of sink of electrical equipment, this sink comprises dc fan, this dc fan comprises shell, described shell is provided with the accommodating cavity for fixing circuit board, and the gap between this accommodating cavity and the circuit board seals by the layer of silica gel that high temperature resistant oil resistance silica gel forms.
Preferably, the sink of described electrical equipment also comprises the temperature transducer for detection of the electrical equipment temperature, and the controller of controlling described dc fan rotating speed according to the temperature that this temperature transducer detects.
The utility model seals gap between accommodating cavity and the circuit board by layer of silica gel is set, thereby is conducive to prevent that extraneous oil smoke, steam from contacting with components and parts on the circuit board, and then the working life of prolongation dc fan.
Description of drawings
Fig. 1 is the blasting type structural representation of the utility model dc fan preferred embodiment;
Fig. 2 is the plan view of Fig. 1 housing.
The realization of the utility model purpose, functional characteristics and advantage are described further with reference to accompanying drawing in connection with embodiment.
Embodiment
Should be appreciated that specific embodiment described herein only in order to explaining the utility model, and be not used in restriction the utility model.
With reference to Fig. 1, Fig. 1 is the blasting type structural representation of the utility model dc fan preferred embodiment.The dc fan that present embodiment provides comprises shell 10, and this shell 10 is provided with the accommodating cavity 101 for fixing circuit board 20, and the gap between this accommodating cavity 101 and the circuit board 20 seals by the layer of silica gel that high temperature resistant oil resistance silica gel forms.
In the present embodiment, the gap between above-mentioned accommodating cavity 101 and the circuit board 20 comprises the inwall of accommodating cavity 101 and the gap between the circuit board 20, and the gap between the bottom surface of accommodating cavity 101 (being shell 10) and the circuit board 20.Particularly, there are certain gap in the inwall of accommodating cavity 101 and circuit board 20, put into accommodating cavity 101 to make things convenient for circuit board 20; Circuit board 20 and shell 10 relative bottom surfaces are provided with components and parts, because the effect of the components and parts of circuit board 20 bottom surfaces, so that the bottom surface of circuit board 20 bottom surfaces and accommodating cavity 101 generation certain interval.
Particularly, above-mentioned dc fan also comprises fan main body 30, this fan main body 30 comprises blower fan line bag 301, fan leaf 302 and bearing 303, and wherein blower fan line bag 301 is fixedly connected with circuit board 20, and this circuit board 20 is between shell 10 and blower fan line bag 301; Fan leaf 302 is rotationally connected by bearing 303 and shell 10.
For example above-mentioned blower fan line bag 301 is extended with two buttons that relatively arrange to circuit board 20 directions, and circuit board 20 is provided with the draw-in groove adaptive with described button, and described button and draw-in groove cooperate, thereby circuit board 20 is fixed on the blower fan line bag 301.Then circuit board 20 is placed in the above-mentioned accommodating cavity 101, then inject with the silica gel of liquid form and fill gap between accommodating cavity 101 and the circuit board 20, thereby formation seals the sealing layer in the gap between accommodating cavity 101 and the circuit board 20 after the silica gel of liquid state solidifies.
The utility model seals gap between accommodating cavity 101 and the circuit board 20 by layer of silica gel is set, thereby is conducive to prevent that extraneous oil smoke, steam from contacting with components and parts on the circuit board 20, and then the working life of prolongation dc fan.
Should be noted that circuit board in above-described embodiment 20 and blower fan line bag 301 fixing modes are the mode that buckle and draw-in groove are fixed, can also circuit board 20 be fixedly connected with blower fan line bag 301 for the mode of fastened by screw among other embodiments.
Further, in conjunction with reference to Fig. 2, Fig. 2 is the plan view of Fig. 1 housing.Above-mentioned shell 10 also is provided with the wire lead slot 102 that passes shell 10 for the external connection with circuit board 20, and silica gel also is arranged in the wire lead slot 102, with the external connection of potted circuit plate 20 and the gap between the wire lead slot 102.
In the present embodiment, because the gap between the external connection of wire lead slot 102 and circuit board 20 is sealed by silica gel, can prevent effectively that oil smoke, steam from entering in the shell 10 of dc fan, thereby prevent that further oil smoke, steam from contacting with components and parts on the circuit board 20, improve the Security of dc fan, prolonged the working life of blower fan.
Particularly, foregoing circuit plate 20 and blower fan line bag 301 relative end faces are provided with components and parts, and above-mentioned silica gel also is arranged on the end face of circuit board 20, to seal the components and parts of this end face.
In the present embodiment, foregoing circuit plate 20 and blower fan line bag 301 relative end faces also can be provided with a small amount of components and parts, by injecting proper silica gel, thus the components and parts of potted circuit plate 20 end faces.Particularly, can inject proper silica gel so that the end face of circuit board 20 forms a layer of silica gel, thus the components and parts of the end face of potted circuit plate 20; Also can carry out a glue encapsulation process to single components and parts, so that all form a layer of silica gel on the single components and parts, with the consumption of minimizing silica gel, thus the manufacture cost of reduction dc fan.
Further, dc fan is anti-flabellum dc fan.Present embodiment can avoid oil smoke to enter the axle center of dc fan when adopting the work of anti-flabellum dc fan, thereby prolongs the dc fan life-span.
The utility model also provides a kind of sink of electrical equipment, and this sink comprises dc fan, and the structure of this dc fan does not repeat them here with reference to aforementioned.Owing to adopted aforementioned dc fan, therefore improve the working life of dc fan, thereby improved the performance of sink, more be suitable for the user and use.
Should be noted that above-mentioned electrical equipment is oil smoke, the more abominable kitchen appliance of water vapour environment, such as electromagnetism stove, electromagnetic steam cabinet etc.
Based on above-described embodiment, in the present embodiment, sink also can intelligence be regulated the rotating speed of dc fan, thereby reduces the loss of electric energy.Particularly, this sink comprises the temperature transducer for detection of the electrical equipment temperature, and the controller of controlling the dc fan rotating speed according to the temperature that this temperature transducer detects.The temperature of temperature transducer Real-Time Monitoring electrical equipment, and export this temperature to controller, this controller can be according to the rotating speed of the certain pulse-width signal of the temperature output duty cycle of electrical equipment with the control dc fan.
Should be noted that in the present embodiment that the mode that controller is regulated the rotating speed of dc fan can arrange according to actual needs, do not limit when not doing at this further.For example, one threshold value is set in controller, and the temperature that detects when temperature transducer is during less than this threshold value, and controller will be controlled the dc fan half capacity operation, the temperature that detects when temperature transducer is during greater than described threshold value, and controller will be controlled the dc fan oepration at full load.
It below only is preferred embodiment of the present utility model; be not so limit claim of the present utility model; every equivalent structure or equivalent flow process conversion that utilizes the utility model specification and accompanying drawing content to do; or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present utility model.
Claims (7)
1. a dc fan comprises shell, and described shell is provided with the accommodating cavity for fixing circuit board, it is characterized in that: the gap between described accommodating cavity and the circuit board seals by the layer of silica gel that high temperature resistant oil resistance silica gel forms.
2. dc fan as claimed in claim 1, it is characterized in that: described shell also is provided with the wire lead slot that passes described shell for the external connection with described circuit board, described silica gel also is arranged in the wire lead slot, with the external connection that seals described circuit board and the gap between the wire lead slot.
3. dc fan as claimed in claim 1, it is characterized in that: this dc fan also comprises fan main body, and this fan main body comprises blower fan line bag, and this blower fan line bag is fixedly connected with described circuit board, and this circuit board is between described shell and blower fan line bag.
4. dc fan as claimed in claim 3, it is characterized in that: the end face that described circuit board is relative with blower fan line bag is provided with components and parts, and described layer of silica gel also is arranged on the end face of described circuit board, to seal the components and parts of this end face.
5. such as each described dc fan in the claim 1 to 4, it is characterized in that: described dc fan is anti-flabellum dc fan.
6. the sink of an electrical equipment is characterized in that: comprise such as each described dc fan in the claim 1 to 5.
7. the sink of electrical equipment as claimed in claim 6 is characterized in that: also comprise the temperature transducer for detection of the electrical equipment temperature, and the controller of controlling described dc fan rotating speed according to the temperature that this temperature transducer detects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220487695.7U CN202883493U (en) | 2012-09-21 | 2012-09-21 | Direct-current (DC) draught fan and heat dissipation device of electrical appliance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220487695.7U CN202883493U (en) | 2012-09-21 | 2012-09-21 | Direct-current (DC) draught fan and heat dissipation device of electrical appliance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202883493U true CN202883493U (en) | 2013-04-17 |
Family
ID=48074926
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220487695.7U Expired - Lifetime CN202883493U (en) | 2012-09-21 | 2012-09-21 | Direct-current (DC) draught fan and heat dissipation device of electrical appliance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202883493U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105114361A (en) * | 2015-08-24 | 2015-12-02 | 德清县创达电子科技有限公司 | Novel fan |
| CN106065875A (en) * | 2016-08-03 | 2016-11-02 | 安庆市沁之源电器有限公司 | One is easy to hard-wired fan |
| CN109072942A (en) * | 2016-04-28 | 2018-12-21 | 日本电产伺服有限公司 | air supply device |
| CN112797013A (en) * | 2020-12-31 | 2021-05-14 | 广东美的厨房电器制造有限公司 | Fan assembly and cooking utensil |
-
2012
- 2012-09-21 CN CN201220487695.7U patent/CN202883493U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105114361A (en) * | 2015-08-24 | 2015-12-02 | 德清县创达电子科技有限公司 | Novel fan |
| CN109072942A (en) * | 2016-04-28 | 2018-12-21 | 日本电产伺服有限公司 | air supply device |
| CN109072942B (en) * | 2016-04-28 | 2020-07-03 | 日本电产伺服有限公司 | Air supply device |
| CN106065875A (en) * | 2016-08-03 | 2016-11-02 | 安庆市沁之源电器有限公司 | One is easy to hard-wired fan |
| CN112797013A (en) * | 2020-12-31 | 2021-05-14 | 广东美的厨房电器制造有限公司 | Fan assembly and cooking utensil |
| CN112797013B (en) * | 2020-12-31 | 2023-08-18 | 广东美的厨房电器制造有限公司 | Fan assembly and cooking utensil |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130417 |