CN108458468A - A kind of denoising device and air conditioner - Google Patents
A kind of denoising device and air conditioner Download PDFInfo
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- CN108458468A CN108458468A CN201810628059.3A CN201810628059A CN108458468A CN 108458468 A CN108458468 A CN 108458468A CN 201810628059 A CN201810628059 A CN 201810628059A CN 108458468 A CN108458468 A CN 108458468A
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- denoising device
- connect
- capacitance
- control panel
- air conditioner
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/24—Means for preventing or suppressing noise
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/24—Means for preventing or suppressing noise
- F24F2013/247—Active noise-suppression
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The present invention provides a kind of denoising device and air conditioner, the denoising device includes：Connecting terminal is connect with power input line；Denoising device ontology is connect with the connecting terminal, eliminates the low-order harmonic flowed through in electric current；Power supply output line is connect with the denoising device ontology, and the electric current for flowing through the denoising device ontology is exported；The air conditioner has denoising device described above.In this way, the low-order harmonic (predominantly triple-frequency harmonics) in power input line is effectively eliminated, is reduced by the low frequency noise that motor generates, achievees the purpose that noise reduction for the incentive action of motor to eliminate low-order harmonic in power grid.
Description
Technical field
The present invention relates to air-conditioning noise reduction technology field, more particularly to a kind of denoising device and air conditioner.
Background technology
At present in Domestic Air-condition side's cabinet machine (fan electromotor) powered and started by interior machine control panel, rotating speed etc.
Control, meanwhile, in domestic air-conditioning side cabinet commonly there is low frequency noise difference in machine.Traditional noise optimal way is to carry on the back
Damping block or optimization sheet metal structural are pasted on metal plate or electric machine structure is optimized.But often time-consuming for these methods,
It is of high cost, noise reduction is limited.
This allows for being badly in need of a kind of denoising device and air conditioner that can effectively reduce noise.
In view of drawbacks described above, creator of the present invention obtains the present invention finally by prolonged research and practice.
Invention content
In view of this, the present invention is directed to propose a kind of denoising device and air conditioner, are dropped with solving existing noise optimal way
The limited problem of effect of making an uproar.
In order to achieve the above objectives, the technical proposal of the invention is realized in this way：
A kind of denoising device comprising：
Connecting terminal is connect with power input line；
Denoising device ontology is connect with the connecting terminal, eliminates the low-order harmonic flowed through in electric current；
Power supply output line is connect with the denoising device ontology, and the electric current for flowing through the denoising device ontology is exported.
Further, the denoising device ontology includes：
Inductance, input terminal are connect with the connecting terminal, generate the corresponding induced electromotive force for hindering curent change；
Capacitance, one end are connect with the output end of the inductance, and the other end is connect with the connecting terminal；Wherein, described
The both ends of capacitance are also connect with the power supply output line respectively.
Further, the inductance size is 5-20mH, and the capacitance size is 60uF-300uF..
Further, the inductance size is 12-14mH.
Further, the capacitance size is 240-260uF.
Further, the denoising device further includes heat dissipation tank, accommodates the denoising device ontology, and dissipate to it
Heat.
Further, the capacitance is composed in parallel by three capacity cells.
Further, the capacitance of three capacity cells is of different sizes.
Compared with the existing technology, denoising device of the present invention has the advantage that：
(1) denoising device of the present invention carries out the low-order harmonic (mainly triple-frequency harmonics) in power input line
It effectively eliminates, is reduced by the low frequency noise that motor generates, is reached for the incentive action of motor to eliminate low-order harmonic in power grid
The purpose of noise reduction.
(2) denoising device of the present invention has reached 80% or more to the elimination factor of triple-frequency harmonics.So as to from listening
Reach noise reduction in feel.
Another object of the present invention is to propose a kind of air conditioner, asked so that existing noise optimal way noise reduction is limited
Topic.
In order to achieve the above objectives, the technical proposal of the invention is realized in this way：
A kind of air conditioner with denoising device described above further includes：
Interior machine control panel, setting on machine, are connect in cabinet with the denoising device；
Fan electromotor, setting in machine, are connect in the cabinet with the interior machine control panel.
Further, the air conditioner further includes：Control panel supply line, one end are connect with the denoising device, separately
One end is connect with the interior machine control panel, is powered to the interior machine control panel.
Further, the air conditioner further includes：Interior machine backboard, the fan electromotor are mounted on the interior machine backboard.
Possessed advantage is identical compared with the existing technology with above-mentioned denoising device for the air conditioner, and details are not described herein.
Description of the drawings
The attached drawing for constituting the part of the present invention is used to provide further understanding of the present invention, schematic reality of the invention
Example and its explanation are applied for explaining the present invention, is not constituted improper limitations of the present invention.In the accompanying drawings：
Fig. 1 is the schematic diagram of the denoising device described in the embodiment of the present invention；
Fig. 2 is the comparison diagram of curstomer's site noise after installing the application denoising device additional；
Fig. 3 is the corresponding specific noise decibel table of specific frequency in Fig. 2 block diagrams；
Fig. 4 be the embodiment of the present invention described in air-conditioner cabinet in machine structure chart.
Reference sign：
10- connecting terminals, 11- inductance, 12- capacitances, 13- capacity cells, machine control panel in 2-, 3- control panel supply lines
Road, machine control panel in 4-, 5- fans, machine backboard in 6-, 7- denoising device ontologies, 8- power input lines, 9- heat dissipation tanks.
Specific implementation mode
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the present invention can phase
Mutually combination.
The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
Current noise optimal way is damping block or optimization sheet metal structural to be pasted on back of the body metal plate or to electric machine structure
It optimizes, still, these are general noise reduction mode, bad for the noise reduction of machine in air-conditioning side's cabinet.
During -2013 years 2012, the application creator receives the noise about air-conditioning side's cabinet on a large scale and complains, but
When the reason of research noise occurs, but blank wall, can only re-replace air conditioner；Since 5 years, with it is similar complain by
Cumulative more, which has become industry problems.
Thoroughly to solve the problems, such as that the low frequency noise of machine generally existing in Domestic Air-condition side's cabinet, effective noise reduction first have to find
The main reason for low frequency noise generates, just can really realize noise reduction.But found in specific research process, due to
Noise Producing reason is varied, and the use environment of air-conditioning side's cabinet is complicated, and the generation of specific noise with usage time, make
It is changed correspondingly with place and using the difference of individual etc. so that it is difficult to effectively be analyzed.
The application creator is complained by studying client's noise, analyzes the mechanism of cabinet air-conditioner noise spectrum and its generation,
The uninterrupted research that have passed through 5 years, has put into a large amount of manpower and materials, has eventually found the root of air-conditioning internal machine noise generation,
As 3 subharmonic content of power grid is big, causes motor electromagnetic to vibrate and then machine backboard 6 in cabinet is caused to resonate, to make interior machine
Send out low frequency noise strongly.
On this basis, creator of the present invention has devised denoising device for the reason, realizes the purpose of noise reduction.
Embodiment 1
As shown in Fig. 1 combinations Fig. 4, it is；Wherein, the denoising device includes：
Connecting terminal 10 is connect with power input line 8；
Denoising device ontology 7 is connect with the connecting terminal 10, eliminates the low-order harmonic flowed through in electric current；
Power supply output line is connect with the denoising device ontology 7, and the electric current for flowing through the denoising device ontology 7 is defeated
Go out.
In this way, by the way that denoising device is arranged between power input line 8 and motor, thus will be low in power input line 8
Subharmonic (mainly triple-frequency harmonics) is effectively eliminated, to eliminate the incentive action of low-order harmonic in power grid to motor,
The low frequency noise that motor generates is reduced, achievees the purpose that noise reduction.
Wherein, the low-order harmonic refers to 5 harmonic components below of power grid.
According to experiment, which is presently the most effective noise-reduction method, if the anti-low order by improving motor
The ability of harmonic wave carrys out noise reduction, then can be difficult to complete due to design problem, the space problem etc. of motor itself.
In this way, by denoising device ontology 7, triple-frequency harmonics is effectively eliminated, realizes the purpose of noise reduction.
Wherein, the connecting terminal 10 can not be a part for the denoising device ontology 7, can also be the noise reduction
A part for device body 7, setting is at the denoising device ontology 7 and 8 link position of the power input line (in this kind of feelings
It is that the link position of denoising device ontology 7 and power input line 8 is directly considered as connecting terminal 10 under condition), such the latter is not required to
External special connecting terminal 10, it is simple and convenient.
Embodiment 2
Denoising device as described above, the present embodiment are different from place and are that the denoising device ontology 7 includes：
Inductance 11, input terminal are connect with the connecting terminal 10, and it is electronic to generate inducting for corresponding obstruction curent change
Gesture；
Capacitance 12, one end are connect with the output end of the inductance 11, and the other end is connect with the connecting terminal 10；Its
In, the both ends of the capacitance 12 are also connect with the power supply output line respectively.
In this way, the triple-frequency harmonics of electric current in power input line 8 is can effectively eliminate, it is humorous to effectively eliminate low order in power grid
Wave reduces the low frequency noise of interior machine, achievees the purpose that noise reduction to the incentive action of air conditioner motor (4/ air-conditioning internal machine of fan electromotor).
There is the relevant information of Harmonics elimination in the prior art, but it is mainly electrical network field, and be directed to
Higher harmonic cancellation in power grid.Harmonic wave in power grid is mainly higher hamonic wave, the wherein content of low-order harmonic less than 1%, because
This existing Harmonics elimination equipment is primarily directed to the elimination of higher hamonic wave, extremely inefficient to the elimination of low-order harmonic,
In, the best Harmonics elimination equipment of effect, 3% is also not higher than to the elimination factor of triple-frequency harmonics/low-order harmonic in the market.
And use in the environment of cabinet air-conditioner, the triple-frequency harmonics accounting in power grid has reached 19% or so, thus generates
Incentive action so that the noise of motor is very high.In order to achieve the purpose that noise reduction, the application creator pass through many experiments, hair
The elimination factor of triple-frequency harmonics is only now increased to 80% or more, could acoustically reach noise reduction.
Wherein, the power supply output line is connect with the input terminal of interior machine control panel 2.
In this way, being powered to fan electromotor 4 by interior machine control panel 2, while can effectively eliminate in power input line 8
The triple-frequency harmonics of electric current, to effectively eliminate excitation of the low-order harmonic to air conditioner motor (4/ air-conditioning internal machine of fan electromotor) in power grid
Effect reduces the low frequency noise of interior machine, achievees the purpose that noise reduction.
Wherein, which not only effectively eliminates the triple-frequency harmonics of electric current in power input line 8, can also have simultaneously
Effect eliminates five times or less harmonic components of electric current, prevents incentive action of the low-order harmonic to air-conditioning internal machine.
Wherein, the denoising device ontology 7 has reached 80% or more to the elimination factor of triple-frequency harmonics.So as to from the sense of hearing
On reach noise reduction.
Embodiment 3
Denoising device as described above, the present embodiment are different from place and are, 11 size of the inductance is 5-20mH,
12 size of the capacitance is 60uF-300uF, in this way, the eradicating efficacy to low-order harmonic can be improved, and then is improved in air-conditioning
The noise reduction of machine.
In this way, by being increased to 95% or more to the elimination factor of triple-frequency harmonics, so that the elimination to triple-frequency harmonics is imitated
Fruit is more preferable, further improves noise reduction.
Preferably, 11 size of the inductance is 12-14mH, 12 size of the capacitance is 240-260uF, in this way, can be into
One step improves the eradicating efficacy to low-order harmonic, and then further increases the noise reduction to air-conditioning internal machine.
Preferably, 11 size of the inductance is 13mH, 12 size of the capacitance is 250uF, in this way, can further increase
To the eradicating efficacy of low-order harmonic, and then further increase the noise reduction to air-conditioning internal machine.
Embodiment 4
Denoising device as described above, the present embodiment are different from place and are, the denoising device further includes heat dissipation
Case 9 accommodates the denoising device ontology 7, and radiates to it.
In this way, on the one hand 7 temperature of denoising device ontology can be prevented excessively high, influence to triple-frequency harmonics/low-order harmonic
Filter effect；On the other hand, the denoising device ontology 7 can also be protected and is fixed.
Embodiment 5
Denoising device as described above, the present embodiment are different from place and are that the denoising device ontology 7 can also
For other low-order harmonic filtering circuits, as long as effective filtering to low-order harmonic/triple-frequency harmonics may be implemented in it.
Embodiment 6
Denoising device as described above, the present embodiment are different from place and are that the capacitance 12 is by three capacitance members
Part 13 composes in parallel；In this way, the eradicating efficacy to triple-frequency harmonics is more preferable, the elimination factor to triple-frequency harmonics can be further increased,
Improve noise reduction.
Wherein, the capacitance 12 can also take the mode of 13 parallel connection of two or four or multiple capacity cells to form, this
Sample, can be more preferable to the eradicating efficacy of triple-frequency harmonics than the denoising device ontology 7 that single capacity cell 13 is constituted, still, by three
The denoising device ontology 7 that a capacity cell 13 composes in parallel capacitance 12 is best to the eradicating efficacy of triple-frequency harmonics, noise reduction
Most preferably.
Embodiment 7
Denoising device as described above, the present embodiment are different from place and are, the electricity of three capacity cells 13
It is of different sizes to hold 12 values.
Wherein, the 12 value size of capacitance of three capacity cells 13 can be identical, but with three capacity cells 13
12 value of capacitance is of different sizes to be compared, and the denoising device of the latter's composition is more preferable to the eradicating efficacy of triple-frequency harmonics, although the former also may be used
80% or more, but simultaneously non-best choice will be increased to the elimination factor of triple-frequency harmonics.
Certainly, in a particular application, the identical combination of three 13 sizes of capacity cell can also be selected according to actual conditions
Mode.
Embodiment 8
Denoising device as described above, the present embodiment is different from place and is, for installing the application denoising device additional
The comparison diagram of curstomer's site noise afterwards, as shown in Fig. 2, dark system indicates to install the noise of the different frequency before denoising device additional in figure
Block diagram, light color indicates to install the noise block diagram of the different frequency after denoising device additional in figure.As shown in figure 3, it is above-mentioned
The corresponding specific noise decibels of different frequency are corresponded in block diagram.By in figure it is found that install additional the application denoising device after client
On-site noise peak-fall 12.2dB, total value decline 6.4dB, and noise reduction is apparent.
Embodiment 9
Denoising device as described above, the present embodiment are different from, and are a kind of air conditioner, wherein the air conditioner packet
It includes：
The denoising device is connect with the power input line 8；
Interior machine control panel 2, setting on machine, are connect in cabinet with the denoising device；
Fan electromotor 4, setting in machine, are connect in the cabinet with the interior machine control panel 2.
In this way, the denoising device eliminates triple-frequency harmonics/low-order harmonic in power input line 8；The interior machine control panel 2
After receiving the electric current for eliminating triple-frequency harmonics/low-order harmonic, fan electromotor 4 is controlled and powered；Thus eliminating the need electricity
Low-order harmonic reduces the low frequency noise that motor generates, achievees the purpose that noise reduction to the incentive action of motor in net.
Embodiment 10
Air conditioner as described above, the present embodiment are different from place and are that the air conditioner further includes：Control panel supplies
Electric line 3, one end are connect with the denoising device, and the other end is connect with the interior machine control panel 2, to the interior machine control panel
2 are powered.
In this way, convenient for power supply.
Embodiment 11
Air conditioner as described above, the present embodiment are different from place and are that the air conditioner further includes：Interior machine backboard
6, the fan electromotor 4 is mounted on the interior machine backboard 6.
In this way, the fan electromotor 4 can be installed and be fixed by interior machine backboard 6；And it is easy to disassemble.
Embodiment 12
Air conditioner as described above, the present embodiment are different from place and are that the air conditioner further includes fan 5, institute
Fan 5 is stated on the fan electromotor 4, action is blowed by the driving of the fan electromotor 4.
Embodiment 13
Air conditioner as described above, the present embodiment are different from place and are, the heat dissipation tank 9 is mounted in the cabinet
Motor spindle is convenient for while not changing machine internal structure in cabinet, is effectively eliminated to low-order harmonic in this way, to reach drop
The purpose made an uproar, improves the experience of client, while saving production cost and design cost.
The application noise reduction process is：Client's power network current passes through power input line 8, and power grid is eliminated 5 times into denoising device
Interior machine control panel 2 is entered by control panel supply line 3 after following harmonic components, is powered to fan electromotor 4.
In this way, the characteristics of causing the resonance of motor metal plate to generate greatly for 3 subharmonic content of power grid, specially in air-conditioning fan electricity
One denoising device of machine 4 Front-end Design eliminates noise vibration driving source, realizes noise reduction purpose.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
With within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention god.
Claims (10)
1. a kind of denoising device, which is characterized in that including：
Connecting terminal (10) is connect with power input line (8)；
Denoising device ontology (7) is connect with the connecting terminal (10), eliminates the low-order harmonic flowed through in electric current；
Power supply output line is connect with the denoising device ontology (7), and the electric current that will flow through the denoising device ontology (7) is defeated
Go out.
2. denoising device according to claim 1, which is characterized in that the denoising device ontology (7) includes：
Inductance (11), input terminal are connect with the connecting terminal (10), and it is electronic to generate inducting for corresponding obstruction curent change
Gesture；
Capacitance (12), one end are connect with the output end of the inductance (11), and the other end is connect with the connecting terminal (10)；Its
In, the both ends of the capacitance (12) are also connect with the power supply output line respectively.
3. denoising device according to claim 2, which is characterized in that inductance (11) size is 5-20mH, the electricity
Appearance (12) size is 60uF-300uF.
4. denoising device according to claim 3, which is characterized in that inductance (11) size is 12-14mH.
5. denoising device according to claim 3, which is characterized in that capacitance (12) size is 240-260uF.
6. denoising device according to claim 1, which is characterized in that the denoising device further includes heat dissipation tank (9), is held
It receives the denoising device ontology (7), and radiates to it.
7. according to any denoising device in claim 2-6, which is characterized in that the capacitance (12) is by three capacitance members
Part (13) composes in parallel.
8. denoising device according to claim 7, which is characterized in that capacitance (12) value of three capacity cells (13)
It is of different sizes.
9. a kind of air conditioner with any denoising device in claim 1-8, which is characterized in that further include：
Interior machine control panel (2), setting on machine, are connect in cabinet with the denoising device；
Fan electromotor 4 (), setting in machine, are connect in the cabinet with the interior machine control panel (2).
10. denoising device according to claim 9, which is characterized in that the air conditioner further includes：Control panel supply line
(3), one end is connect with the denoising device, and the other end is connect with the interior machine control panel (2), to the interior machine control panel
(2) it is powered.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810628059.3A CN108458468A (en) | 2018-06-19 | 2018-06-19 | A kind of denoising device and air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810628059.3A CN108458468A (en) | 2018-06-19 | 2018-06-19 | A kind of denoising device and air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108458468A true CN108458468A (en) | 2018-08-28 |
Family
ID=63216225
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810628059.3A Withdrawn CN108458468A (en) | 2018-06-19 | 2018-06-19 | A kind of denoising device and air conditioner |
Country Status (1)
| Country | Link |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030161168A1 (en) * | 2000-03-17 | 2003-08-28 | Reiji Kawashima | Three-phase rectifier |
| CN201113893Y (en) * | 2007-08-31 | 2008-09-10 | 台达电子工业股份有限公司 | Fan system and fan |
| CN201846466U (en) * | 2010-07-16 | 2011-05-25 | 深圳市奋达科技股份有限公司 | USB loudspeaker box having function of eliminating low frequency noise |
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| CN208519957U (en) * | 2018-06-19 | 2019-02-19 | 奥克斯空调股份有限公司 | A kind of denoising device and air conditioner |
-
2018
- 2018-06-19 CN CN201810628059.3A patent/CN108458468A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030161168A1 (en) * | 2000-03-17 | 2003-08-28 | Reiji Kawashima | Three-phase rectifier |
| CN201113893Y (en) * | 2007-08-31 | 2008-09-10 | 台达电子工业股份有限公司 | Fan system and fan |
| CN201846466U (en) * | 2010-07-16 | 2011-05-25 | 深圳市奋达科技股份有限公司 | USB loudspeaker box having function of eliminating low frequency noise |
| CN105306636A (en) * | 2015-10-30 | 2016-02-03 | 努比亚技术有限公司 | Method, circuit and system for improving power supply noise |
| CN208519957U (en) * | 2018-06-19 | 2019-02-19 | 奥克斯空调股份有限公司 | A kind of denoising device and air conditioner |
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