CN202634164U - Noise reduction structure for motor cabin of handheld blowing-suction machine - Google Patents
Noise reduction structure for motor cabin of handheld blowing-suction machine Download PDFInfo
- Publication number
- CN202634164U CN202634164U CN 201220195766 CN201220195766U CN202634164U CN 202634164 U CN202634164 U CN 202634164U CN 201220195766 CN201220195766 CN 201220195766 CN 201220195766 U CN201220195766 U CN 201220195766U CN 202634164 U CN202634164 U CN 202634164U
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- CN
- China
- Prior art keywords
- motor
- noise
- motor cabin
- motor bin
- noise reduction
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- 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 - Fee Related
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- Motor Or Generator Frames (AREA)
- Motor Or Generator Cooling System (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model relates to a noise reduction structure for a motor cabin of a handheld blowing-suction machine, which is mainly used for reducing noises directly felt by operators and comprises a motor cabin for holding a motor and an air inlet for cooling the motor. The noise reduction structure is characterized in that the air inlet is arranged at the lower position of the motor cabin, a noise blocking plate is mounted in the motor cabin, an airflow channel is formed in the motor cabin by means of the noise blocking plate, one end of the airflow channel leads to the inside of the motor cabin, the other end of the airflow channel leads to the air inlet, the airflow channel is of a circuitous labyrinth structure, and noise absorption cotton is arranged on the inner wall of the airflow channel. The noise reduction structure for the motor cabin of the handheld blowing-suction machine has the advantages that mechanical noises produced by the working motor and noises produced by airflow disturbance are greatly attenuated by the actions such as reflection, absorption and the like of the airflow channel of the optimized motor cabin, most of the attenuated noises are led out of the air inlet at the lower portion of the motor cabin, the noises directly received by the operators are effectively reduced, the structure is simple, the cost is low, and the noise reduction structure is reliable and effective.
Description
Technical field
The utility model relates to a kind of hand-hold type blower that is used for foreign material such as pressure-vaccum leaf, fragment, particularly relates to the noise-reducing structure of this hand-hold type blower motor bin.
Background technology
The scope of application of hand-hold type blower is very extensive, is applicable to family's cleaning, highway maintenance construction, lawn and gardens cleaning etc.But the present big problem of hand-hold type blower ubiquity noise on the market; FORMAL PARAMETER is arbitrarily downgraded between 103 ~ 105db; Wherein motor bin partly is one of main noise source that produces noise; Because commercially available hand-hold type blower is on two sides of motor bin, to offer to be used for the air admission hole (common for gill type hole) of cooling motor, adopt the motor bin of this structure, the machinery noise that produces during machine operation can be directly passed to the operator through the air admission hole on the side with the noise of flow perturbation generation; Make the operator afford bigger noise pollution, make the operator produce discomfort easily.
Summary of the invention
The purpose of the utility model is, to the bigger problem of above-mentioned conventional motor bin noise, provides a kind of motor bin is carried out structure optimization, thereby can effectively reduce the motor bin noise-reducing structure of blower noise.
To achieve these goals, the technical scheme of the utility model employing is:
Hand-hold type blower motor bin noise-reducing structure comprises the motor bin and the air admission hole that is used for cooling motor that are used to hold motor, and it is characterized in that: described air admission hole is arranged at the lower position of motor bin.
Further, be provided with the resistance soundboard in the described motor bin, said resistance soundboard forms airflow path in motor bin, and said airflow path one end leads in the motor bin, and the other end leads to air admission hole.
Further, described airflow path is arranged to tortuous labyrinth type.
Further, described airflow path inwall is provided with acoustical cotton.
Adopt the hand-hold type blower of the motor bin noise-reducing structure of the utility model, have following beneficial effect:
1) noise that machinery noise that produces during machine operation and flow perturbation produce obtains bigger decay after through effects such as the reflection of the airflow path of the motor bin after optimizing, absorption; Noise major part after the decay derives from the air admission hole of motor bin bottom, and the noise that the operator directly receives will effectively be reduced.
2) simple in structure, with low cost, effectively reliable.
Description of drawings
The front schematic view of Fig. 1 the utility model motor bin noise-reducing structure.
Fig. 2 has the blower overall structure sketch map of the utility model motor bin noise-reducing structure.
Embodiment
Like Fig. 1, shown in 2; Blower 10 comprises chain-drive section 11 and airduct 12; Said chain-drive section 11 comprises left half shell 13 and right half shell (not shown), and left half shell 13 surrounds with right half shell and forms motor bin 14, in the said motor bin 14 the motor (not shown) is installed.
Be provided with air admission hole 3 in the bottom of motor bin 14; During machine operation, cooling air can get into motor bin 14 from air admission hole 3 under the suction function that the electric motor fan rotation produces; Flow out through the exhaust vent 5 of motor then, thereby realize giving the motor cooling purpose from motor bin 14.
Through air admission hole 3 being arranged on the lower position of motor bin 14, the noise that can be significantly the machinery noise and the flow perturbation of motor be produced through air admission hole 3 towards under direction derive, thereby the noise that the operator is directly experienced reduces.
In order further to reduce the noise that the operator experiences, in motor bin 14, be provided with resistance soundboard 1, said resistance soundboard 1 forms airflow path in motor bin 14, and said airflow path one end leads in the motor bin 14, and the other end leads to air admission hole 3.Preferably, said airflow path is arranged to tortuous labyrinth type.
In order further to reduce the noise that the operator experiences, also be provided with acoustical cotton on the described airflow path inwall, can further reduce noise.
Other undeclared parts that the utility model relates to are identical with prior art.
Claims (4)
1. hand-hold type blower motor bin noise-reducing structure comprises the motor bin and the air admission hole that is used for cooling motor that are used to hold motor, and it is characterized in that: described air admission hole is arranged at the lower position of motor bin.
2. motor bin noise-reducing structure according to claim 1 is characterized in that: be provided with the resistance soundboard in the described motor bin, said resistance soundboard forms airflow path in motor bin, and said airflow path one end leads in the motor bin, and the other end leads to air admission hole.
3. motor bin noise-reducing structure according to claim 2 is characterized in that: described airflow path is arranged to tortuous labyrinth type.
4. according to claim 2 or 3 described motor bin noise-reducing structures, it is characterized in that: described airflow path inwall is provided with acoustical cotton.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220195766 CN202634164U (en) | 2012-05-04 | 2012-05-04 | Noise reduction structure for motor cabin of handheld blowing-suction machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220195766 CN202634164U (en) | 2012-05-04 | 2012-05-04 | Noise reduction structure for motor cabin of handheld blowing-suction machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202634164U true CN202634164U (en) | 2012-12-26 |
Family
ID=47387309
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220195766 Expired - Fee Related CN202634164U (en) | 2012-05-04 | 2012-05-04 | Noise reduction structure for motor cabin of handheld blowing-suction machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202634164U (en) |
-
2012
- 2012-05-04 CN CN 201220195766 patent/CN202634164U/en not_active Expired - Fee Related
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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: 20121226 Termination date: 20150504 |
|
| EXPY | Termination of patent right or utility model |