CN201190677Y

CN201190677Y - Waterproof type radiator fan

Info

Publication number: CN201190677Y
Application number: CNU2008200937404U
Authority: CN
Inventors: 何文等
Original assignee: BAOAN DISTRICT LONGHUA KAIMEI MOTOR FACTORY
Current assignee: BAOAN DISTRICT LONGHUA KAIMEI MOTOR FACTORY
Priority date: 2008-04-28
Filing date: 2008-04-28
Publication date: 2009-02-04
Anticipated expiration: 2018-04-28

Abstract

The utility model relates to a watertight radiation fan which comprises a rotor, a stator and a fan outer frame. The rotor comprises an annular permanent magnet body fixed on the inner wall of a motor shell, a fan blade ring fixed on the radial outer wall of the motor shell, a rotor shaft fixed at the center of an axial end face of a fan blade ring and extending inwards, and two bearings fixed on the rotor shaft; the stator comprises a stator lamination, an upper insulating seat, a lower insulating seat, a stator winding wound on the upper insulating seat and the lower insulating seat , and a printed circuit board electrically connected with the stator winding; after assembled, the stator is placed into a mould and then forms a hollow cylindrical sealing whole through injection molding; two electrically connected input power supplying wires on the printed circuit board are led out from the sealing whole; the stator of the sealing whole is placed in the fan outer frame and sleeved outside a bearing structure at the bottom of the fan outer frame; then the rotor shaft fixed with the two bearings is inserted into the central space of the stator so that the two bearings are vertically fixed in the bearing structure at the bottom of the fan outer frame; thereby the radiation fan can be electrified for operation. The watertight radiation fan has the characteristics of low cost, good watertight effect, and the like.

Description

The waterproof type radiation fan

[technical field]

The utility model relates to the small-size shaft flow fan, relates in particular to the external rotor radiation fan that has water-proof function.

[background technique]

The prior art radiation fan lacks water-proof function; After moist local use or splashing water, parafunctional situation can be produced for a long time, the specific demand of client can't be satisfied product.

The prior art radiation fan is in order to obtain waterproofing effect, carrying out vacuum coating after the component that contact with water in the radiation fan and can conduct electricity are simultaneously fitted together handles, radiation fan after handling like this has waterproofing effect really, but the cost costliness of vacuum coating.And vacuum coating is handled when flaw is arranged, and just can't make the traditional heat-dissipating fan possess the function of complete waterproof.And the product after the vacuum coating, if the experience impact surfaces impaired with the naked eye be what be difficult to find, this is after just the traditional heat-dissipating fan carries out vacuum coating, why quality control is difficult to carry out the reason of control.

[model utility content]

The technical problems to be solved in the utility model is to avoid above-mentioned the deficiencies in the prior art part and proposes a kind of waterproof type radiation fan; It has characteristics such as cost is low, good water-proof effect.

The technological scheme that the utility model solve the technical problem employing is:

Propose a kind of waterproof type radiation fan, comprise rotor, stator and fan housing; Described rotor comprise the annular permanent magnet that is fixed in hollow cylindrical motor casing inwall and be fixed on this motor casing radial outer wall, radial flabellum ring, and be fixed in axial end center of this flabellum ring and the rotor shaft that inwardly stretches and be fixed in two bearings on this rotor shaft; Described stator comprises with described two bearings same central axial line, and contain the stator lasmination of the shared horizontal space of this two bearings and be arranged on the upper and lower insulation base of these stator lasmination both ends of the surface, and twine staor winding thereon and be located at this time insulation base following, with the printed circuit board that this staor winding is electrically connected, be electrically connected with two on the described printed circuit board and import supply lines; Described stator lasmination and upper and lower insulation base, and twine thereon staor winding and the printed circuit board below the following insulation base, put into mould after they are assembled, with engineering plastics injection moulding is that the hollow cylindrical sealing is whole, sealing integral waterproofing, fire-retardant, described two input supply lines are drawn in sealing integral body; Insert the fan housing with becoming the whole stator of described sealing, being enclosed within has same central axial line with described stator and is fixed on this fan outside of the bearing framework of frame bottom outward, again will be mount the rotor shaft of described two bearings insert the central space that has become the whole described stator of sealing, make the bearing framework internal fixation of this two bearings frame bottom outside standing on this fan, described radiation fan just can add electric operation.

Compare with prior art, the beneficial effects of the utility model are:

1, the utility model waterproof type radiation fan can be for a long time moist local the use, even the entire heat dissipation fan splashes water, even with its whole water of putting into, can both proper functioning, outstanding waterproofing effect is arranged;

2, the utility model waterproof type radiation fan is owing to fit together its inner component that will conduct electricity that contact with water injection moulding afterwards and become waterproof, fire-retardant sealing integral body, it is much lower that its injection moulding cost ratio carries out the vacuum coating processing, thereby good techno-economic effect is arranged.

[description of drawings]

Fig. 1 is the axonometric projection decomposing state schematic representation of prior art radiation fan;

Fig. 2 is the assembly structure schematic representation of described prior art radiation fan;

Fig. 3 is the axonometric projection decomposing state schematic representation of the utility model waterproof type radiation fan;

Fig. 4 is the assembly structure schematic representation of waterproof type radiation fan described in the utility model.

[embodiment]

Below in conjunction with accompanying drawing the utility model is described in further detail.

Referring to Fig. 1～Fig. 4, the utility model relates to a kind of radiation fan with waterproofing effect, comprises rotor 10, stator 20 and fan housing 30; Described rotor 10 comprise the annular permanent magnet 16 that is fixed in hollow cylindrical motor casing 15 inwalls and be fixed on these motor casing 15 radial outer wall, radial flabellum ring 11, and be fixed in 11 1 axial end centers of flabellum ring and rotor shaft 12 that inwardly stretches and the two

bearings

14,17 that is fixed on this rotor shaft 12, in bearing 14 and flabellum ring 11 axial ends, also be provided with spring 13 in the heart the rotor shaft 12, be provided with baffle ring 18 near bearing 17 places in rotor shaft 12 bottoms; Described stator 20 comprises with two

bearings

14,17 same central axial line, and contain the stator lasmination 28 of these two

bearings

14,17 shared horizontal spaces and be arranged on the upper and

lower insulation base

27,29 of these stator lasmination 28 both ends of the surface, and winding staor winding thereon and the printed circuit board 21 following, that be electrically connected with this staor winding that is located at down insulation base 29, be electrically connected with two input supply lines (not marking) on this printed circuit board 21; Described stator lasmination 28 and upper and

lower insulation base

27,29, and twine thereon staor winding and the following printed circuit board 21 of following insulation base 29, put into mould after they are assembled, with engineering plastics injection moulding be hollow cylindrical sealing whole 20 ', sealing integral body 20 ' waterproof, fire-retardant, described two the input supply lines from sealing integral body 20 ' in draw; Insert fan housing 30 with becoming the whole stator of sealing, be enclosed within the bearing framework outside that fan housing 30 bottoms of same central axial line are arranged with stator, again will be mount the rotor shaft 12 of two

bearings

14,17 insert the central space that has become the whole stator of sealing, make two

bearings

14,17 stand on the bearing framework internal fixation of these fan housing 30 bottoms, described radiation fan just can add electric operation.

Referring to Fig. 4, for easy-to-connect and fixed, be provided with two conductive base pins 22 that stretch vertically between following insulation base 29 and the printed circuit board 21, two conductive base pins, 22 two ends are separately fixed at down on insulation base 29 and the printed circuit board 21, staor winding is electrically connected with printed circuit board 21 by this two conductive base pin 22, described two conductive base pins 22 also be injection molding simultaneously be fixed on sealing integral body 20 ' in.

Fix, dispel the heat to reduce temperature rise, protection against the tide and to improve the integral insulation performance in order to make each parts on the described stator 20, described stator 20 assembles, puts into before the mould, palpus impregnating insulating varnish (English name is Varnish, and the country and the place that have are called varnish), and oven dry.

In order to make two input supply lines and sealing integral body a 20 ' sealability better, import supply lines and whole 26 white glues that also are coated with one deck waterproof of sealing for described two, this white glues can be a kind of hot melt adhesive.

The above embodiment has only expressed preferred implementation of the present utility model, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the utility model claim; Should be pointed out that for the person of ordinary skill of the art under the prerequisite that does not break away from the utility model design, can also make some distortion and improvement, these all belong to protection domain of the present utility model; Therefore, all equivalents and modifications of being done with the utility model claim scope all should belong to the covering scope of the utility model claim.

Claims

1. a waterproof type radiation fan comprises rotor (10), stator (20) and fan housing (30); Described rotor (10) comprise the annular permanent magnet (16) that is fixed in hollow cylindrical motor casing (15) inwall and be fixed on this motor casing (15) radial outer wall, radial flabellum ring (11), and be fixed in (11) axial end centers of described flabellum ring and the rotor shaft (12) that inwardly stretches and be fixed in two bearings (14,17) on this rotor shaft (12); Described stator (20) comprises with described two bearings (14,17) same central axial line, and contain the stator lasmination (28) of the shared horizontal space of this two bearings (14,17) and be arranged on the upper and lower insulation base (27,29) of this stator lasmination (28) both ends of the surface, and twine staor winding thereon and be located at the described printed circuit board following, that be electrically connected with this staor winding (21) of insulation base (29) down, be electrically connected with two input supply lines on the described printed circuit board (21); It is characterized in that:

Described stator lasmination (28) and upper and lower insulation base (27,29), and winding described staor winding and the following printed circuit board (21) of described insulation base (29) down thereon, put into mould after they are assembled, with engineering plastics injection moulding is hollow cylindrical sealing whole (20 '), sealing integral body (20 ') waterproof, fire-retardant, described two input supply lines are drawn in sealing integral body (20 '); Insert described fan housing (30) with becoming the whole stator of described sealing, be enclosed within the bearing framework outside that with described stator same central axial line is arranged and be fixed on this fan housing (30) bottom, again will be mount the rotor shaft (12) of described two bearings (14,17) insert the central space that has become the whole described stator of sealing, make described two bearings (14,17) at the bearing framework internal fixation that stands on this fan housing (30) bottom, described radiation fan just can add electric operation.

2. waterproof type radiation fan according to claim 1 is characterized in that:

Be provided with two conductive base pins (22) that stretch vertically between described insulation base (29) down and the described printed circuit board (21), described staor winding is electrically connected with described printed circuit board (21) by this two conductive base pin (22), and described two conductive base pins (22) also are injection molding simultaneously and are fixed in the sealing integral body (20 ').

3. waterproof type radiation fan according to claim 1 is characterized in that:

Baffle ring (18) is located to be provided with near described bearing (17) in described rotor shaft (12) bottom.

4. according to each described waterproof type radiation fan of claim 1～3, it is characterized in that:

Described stator (20) assembles, puts into before the mould, palpus impregnating insulating varnish, and oven dry.

5. according to each described waterproof type radiation fan of claim 1～3, it is characterized in that:

Also be coated with the white glues of one deck waterproof between described two input supply lines and sealing integral body (20 ').