CN205401197U - Low noise axial -flow fan - Google Patents
Low noise axial -flow fan Download PDFInfo
- Publication number
- CN205401197U CN205401197U CN201620144565.1U CN201620144565U CN205401197U CN 205401197 U CN205401197 U CN 205401197U CN 201620144565 U CN201620144565 U CN 201620144565U CN 205401197 U CN205401197 U CN 205401197U
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- Prior art keywords
- output shaft
- shaft
- master body
- wheel shaft
- low noise
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Abstract
The utility model relates to a low noise axial -flow fan, including casing, impeller, motor and power, the impeller includes shaft and blade, and the motor has the output shaft that is linked together with the shaft and output shaft and takes turns the betweencenters and passes through the coupling joint. The output shaft is equipped with the mid -game towards the terminal surface of shaft with one heart, to the mid -game include the master body, the laser emitter that sets up in the master body central point department of putting and locate the internal control circuit board of master, control circuit board and laser emitter be electric be connected and with the power radio connection, all be equipped with a plurality of screw thread through -holes along the circumference on the radial terminal surface of the master body, correspond on the radial terminal surface of output shaft and be equipped with a plurality of screw thread blind holes, still include a plurality of locking screw, locking screw correspond pass the screw thread through -hole and the spiro union in the screw thread blind hole, be equipped with along axially extended centering passageway and its the central axis and the coincidence of shaft the central axis the coaxial centering passageway that runs through of light beam that laser emitter sent in the shaft. This structure can be carried out real -time laser centering and ensured the diaxon concentricity to reduce the noise.
Description
Technical field
This utility model relates to blower fan and manufactures field, particularly relates to a kind of low noise axial fan.
Background technology
Axial flow blower is a kind of mechanical energy relying on input, improves gas pressure and supplies gas side by side the machinery of body, is widely used in the fields such as the ventilation of factory, mine, tunnel, cooling tower, vehicle, boats and ships and building, dust discharge and cooling.But a lot of users reflect that the noise that axial flow blower operationally impeller produces is relatively big, sometimes can have a strong impact on the productive life of people, bring very big inconvenience to the life of people, so noise problem is the problem must paid attention in axial flow blower design process.Research finds, the concentricity situation between motor output shaft and impeller wheel shaft is relatively big on the impact of fan noise, when both concentricitys exist severe deviations, not only brings serious vibration noise, and the operation stability and safety to blower fan has a strong impact on.
Utility model content
Technical problem to be solved in the utility model is in that to overcome the problems referred to above, and a kind of low noise axial fan carrying out real time laser centering is provided, can effectively guarantee the concentricity between motor output shaft and wheel shaft, effectively reduce the noise owing to Concentricity tolerance brings.
The technical solution of the utility model is:
A kind of low noise axial fan described in the utility model, including casing, it is arranged on the impeller of casing internal, motor and power supply, described impeller includes wheel shaft and around the radially-arranged multiple blades of wheel shaft, described motor is had an output shaft being connected with wheel shaft and is connected by shaft coupling between described output shaft and wheel shaft, it is characterised in that:
Described output shaft is provided with one to mid-game with one heart towards the radial end face of wheel shaft, described mid-game including master body, the laser beam emitting head being arranged on master body center position and the control circuit plate being arranged in master body, described control circuit plate electrically connects with laser beam emitting head and electrically connects with power supply wireless；Wherein, the radial end face of described master body circumferentially uniformly offers multiple tapped through hole, on the radial end face of described output shaft, correspondence offers multiple tapped blind hole, also includes multiple lock-screw, and described lock-screw one_to_one corresponding is screwed onto in tapped blind hole through tapped through hole；
Described axle interior offers the central axis of a centering passage axially extended and described centering passage and is completely superposed with wheel shaft central axis, and the light beam that described laser beam emitting head sends coaxially runs through centering passage.
Above structure, this utility model can monitor between motor output shaft with wheel shaft whether concentric installation in real time when fan operation, it is ensured that blower fan remains under the state that concentricity is higher, it is possible to effectively reduce running noises, it is ensured that safe handling.If Concentricity tolerance is excessive, then the light beam that laser beam emitting head is launched cannot pass from the centering passage of wheel shaft, does not namely observe light beam output on wheel axle end surface, now then can substantially point out user to carry out alignment.
Further, in low noise axial fan described in the utility model, also having compressed a damping pad between described master body and output shaft, described damping pad is provided with installs through hole one to one with output shaft tapped blind hole.Described damping pad is at master body buffer structure together with increasing between output shaft, further the transmission of decay noise.
Further, in low noise axial fan described in the utility model, the quantity of described tapped through hole is no less than three, it is ensured that each to degree of firmly installing.
Further, in low noise axial fan described in the utility model, the outfan of described laser beam emitting head does not protrude from the master body radial end face towards wheel shaft, protects laser beam emitting head better.
Further, in low noise axial fan described in the utility model, the external diameter of described master body is less than the external diameter of output shaft.
The beneficial effects of the utility model are: the alignment function of the laser beam that this utility model is exported by laser beam emitting head, it is ensured that can remain at operating under height concentric condition between motor output shaft and wheel shaft, it is to avoid the vibration noise that concentricity causes；And user can be played the effect of real-time inspection declaration, it is simple to finding in time and adjust, safety in operation and the stability of blower fan are ensured；It is simple in construction, reasonable in design, it is easy to accomplish.
Accompanying drawing explanation
Fig. 1 is cut-away illustration of the present utility model.
Fig. 2 is the close-up schematic view of Fig. 1.
Fig. 3 is that local of the present utility model splits schematic diagram.
Detailed description of the invention
In conjunction with accompanying drawing, this utility model is further described:
With reference to shown in Fig. 1, Fig. 2, a kind of low noise axial fan described in the present embodiment, including casing, it is arranged on the impeller 1 of casing internal, motor 2 and power supply (not shown), described impeller 1 includes wheel shaft 3 and around the radially-arranged multiple blades of wheel shaft, and described motor 2 is had an output shaft being connected with wheel shaft 4 and is connected by shaft coupling between described output shaft 4 with wheel shaft 3.
Described output shaft 4 is provided with one to mid-game 5 with one heart towards the radial end face of wheel shaft 3, the laser beam emitting head 7 described mid-game 5 is included master body 6, being arranged on master body 6 center position and the control circuit plate 8 being arranged in master body 6, described control circuit plate 8 electrically connects with laser beam emitting head 7 and electrically connects with power supply wireless.
Wherein, the connected mode between master body 6 with output shaft 4 is described as follows in conjunction with Fig. 2 and Fig. 3: circumferentially uniformly offering multiple tapped through hole 6-1 on the radial end face of described master body 6, the quantity of tapped through hole 6-1 described in the present embodiment is no less than three；On the radial end face of described output shaft 4, correspondence offers multiple tapped blind hole 4-1, a damping pad 9 has also been compressed between described master body 6 and output shaft 4, described damping pad 9 is provided with installs through hole 9-1 one to one with output shaft 4 tapped blind hole 4-1, also including multiple lock-screw 10, described lock-screw 10 one_to_one corresponding is screwed onto in tapped blind hole 4-1 through tapped through hole 6-1, installation through hole 9-1.
The internal central axis offering a centering passage 3-1 axially extended and described centering passage 3-1 of described wheel shaft 3 is completely superposed with wheel shaft 3 central axis, and the light beam that described laser beam emitting head 7 sends coaxially runs through centering passage 3-1.
In the present embodiment, the outfan of described laser beam emitting head 7 does not protrude from the master body 6 radial end face towards wheel shaft 3, namely sinks in master body 6 in laser beam emitting head 7, it is possible to protection laser beam emitting head 7 better.
In order to avoid the normal operation to output shaft 4, shaft coupling of installing of master body 6 interferes, the external diameter of described master body 6 is less than the external diameter of output shaft 4.
The principle that this utility model is based in geometric optics light linearly to be propagated in uniform dielectric of the same race, when switching on power, during fan starting operating, power supply wireless drives control circuit plate 8 to make laser beam emitting head 7 launch light beam, when output shaft 4 and wheel shaft 3 keep coaxial concentric time, light beam can pass centering passage 3-1 just, namely light beam spot be can be observed on wheel shaft 3 outer face；Otherwise then do not observe, it should carry out maintenance in time and adjust.Thus this utility model can adopt the mode of above-mentioned indicating reminders, it is ensured that height concentricity, the vibration noise owing to concentricity difference causes can be avoided as far as possible, reduce the purpose of noise.
Specific embodiment described herein only illustrative principle of the present utility model and effect thereof, not for restriction this utility model.Above-described embodiment all under spirit of the present utility model and category, can be modified or change by any those skilled in the art.Therefore, as long as art has all equivalence modification or changes that usually intellectual completes under the spirit disclosed without departing from this utility model with technological thought, must be contained by claim of the present utility model.
Claims (5)
1. a low noise axial fan, including casing, it is arranged on the impeller of casing internal, motor and power supply, described impeller includes wheel shaft and around the radially-arranged multiple blades of wheel shaft, described motor is had an output shaft being connected with wheel shaft and is connected by shaft coupling between described output shaft and wheel shaft, it is characterised in that:
Described output shaft is provided with one to mid-game with one heart towards the radial end face of wheel shaft, described mid-game including master body, the laser beam emitting head being arranged on master body center position and the control circuit plate being arranged in master body, described control circuit plate electrically connects with laser beam emitting head and electrically connects with power supply wireless；Wherein, the radial end face of described master body circumferentially uniformly offers multiple tapped through hole, on the radial end face of described output shaft, correspondence offers multiple tapped blind hole, also includes multiple lock-screw, and described lock-screw one_to_one corresponding is screwed onto in tapped blind hole through tapped through hole；
Described axle interior offers the central axis of a centering passage axially extended and described centering passage and is completely superposed with wheel shaft central axis, and the light beam that described laser beam emitting head sends coaxially runs through centering passage.
2. low noise axial fan according to claim 1, it is characterised in that: also having compressed a damping pad between described master body and output shaft, described damping pad is provided with installs through hole one to one with output shaft tapped blind hole.
3. low noise axial fan according to claim 1, it is characterised in that: the quantity of described tapped through hole is no less than three.
4. low noise axial fan according to claim 1, it is characterised in that: the outfan of described laser beam emitting head does not protrude from the master body radial end face towards wheel shaft.
5. low noise axial fan according to claim 1, it is characterised in that: the external diameter of described master body is less than the external diameter of output shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620144565.1U CN205401197U (en) | 2016-02-26 | 2016-02-26 | Low noise axial -flow fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620144565.1U CN205401197U (en) | 2016-02-26 | 2016-02-26 | Low noise axial -flow fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205401197U true CN205401197U (en) | 2016-07-27 |
Family
ID=56424121
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620144565.1U Expired - Fee Related CN205401197U (en) | 2016-02-26 | 2016-02-26 | Low noise axial -flow fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205401197U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111934486A (en) * | 2020-07-02 | 2020-11-13 | 南京铁道职业技术学院 | Axial flow motor device for subway |
| CN113983961A (en) * | 2021-10-14 | 2022-01-28 | 中国长江动力集团有限公司 | Laser radiation inspection device |
-
2016
- 2016-02-26 CN CN201620144565.1U patent/CN205401197U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111934486A (en) * | 2020-07-02 | 2020-11-13 | 南京铁道职业技术学院 | Axial flow motor device for subway |
| CN111934486B (en) * | 2020-07-02 | 2021-11-05 | 南京铁道职业技术学院 | Axial flow motor device for subway |
| CN113983961A (en) * | 2021-10-14 | 2022-01-28 | 中国长江动力集团有限公司 | Laser radiation inspection device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160727 Termination date: 20170226 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |