CN110822547A - Variable air volume end device with noise reduction function and air conditioning system - Google Patents
Variable air volume end device with noise reduction function and air conditioning system Download PDFInfo
- Publication number
- CN110822547A CN110822547A CN201911083050.XA CN201911083050A CN110822547A CN 110822547 A CN110822547 A CN 110822547A CN 201911083050 A CN201911083050 A CN 201911083050A CN 110822547 A CN110822547 A CN 110822547A
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- Prior art keywords
- air
- sound
- variable
- air duct
- silencing
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Classifications
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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
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0007—Indoor units, e.g. fan coil units
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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
- F24F11/00—Control or safety arrangements
- F24F11/89—Arrangement or mounting of control or safety devices
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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
- F24F13/02—Ducting arrangements
- F24F13/06—Outlets for directing or distributing air into rooms or spaces, e.g. ceiling air diffuser
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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
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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
- F24F2013/242—Sound-absorbing material
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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
- F24F2013/247—Active noise-suppression
Abstract
The invention discloses a variable air volume end device with a noise reduction function and an air conditioning system, wherein the variable air volume end device comprises: the air conditioner comprises a shell, an air inlet, an air outlet and a fan, wherein the shell is provided with the air inlet and the air outlet, and the shell is also internally provided with an air duct communicated with the air inlet and the air outlet; the silencing component is arranged in the air duct, divides the air duct into a first air duct and a second air duct, the first air duct is communicated with the air inlet, the second air duct is communicated with the air outlet, the silencing component is provided with a silencing passage, and the first air duct is communicated with the second air duct through the silencing passage; and the air valve assembly is arranged at the position of the air inlet. The variable air volume end device of the invention achieves the purpose of reducing noise by arranging the silencing component in the air duct and arranging the air valve component at the position of the air inlet.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to an air quantity variable end device with a noise reduction function and an air conditioning system.
Background
The Variable Air Volume end device is one of the key devices of a Variable Air Volume Air conditioning System (Variable Air Volume System). The air conditioning system adjusts the primary air delivery rate through the end device, tracks load changes and maintains the room temperature. The tail end of the variable air volume of the air conditioner is used as a device which is closest to the user in distance of the air conditioning system, and noise generated during operation of the air conditioner can be directly transmitted to the user, so that the comfort of the user is greatly reduced.
Disclosure of Invention
The invention discloses a variable air volume end device with a noise reduction function and an air conditioning system, and solves the problems that noise generated during the operation of the existing variable air volume end device can be directly transmitted to a user, and the comfort of the user is greatly reduced.
According to an aspect of the present invention, there is disclosed a variable air volume terminal device, comprising: the air conditioner comprises a shell, an air inlet, an air outlet and a fan, wherein the shell is provided with the air inlet and the air outlet, and the shell is also internally provided with an air duct communicated with the air inlet and the air outlet; the silencing component is arranged in the air duct, divides the air duct into a first air duct and a second air duct, the first air duct is communicated with the air inlet, the second air duct is communicated with the air outlet, the silencing component is provided with a silencing passage, and the first air duct is communicated with the second air duct through the silencing passage; and the air valve assembly is arranged at the position of the air inlet.
Further, the variable air volume end device further comprises: and the wind speed detection device is arranged at the position of the air outlet.
Further, the acoustic assembly includes an impedance compounding acoustic silencer.
Further, the silencing passages are multiple and are arranged at intervals.
Further, the noise reduction assembly is a honeycomb structure, and the honeycomb structure comprises a plurality of honeycomb units, and each honeycomb unit is internally provided with one noise reduction channel.
Furthermore, the inner wall of the silencing channel is provided with an accommodating cavity, a silencing hole communicated with the accommodating cavity is formed in the inner wall surface of the silencing channel, and a sound absorption material is arranged in the accommodating cavity.
Further, the muffler assembly includes: the acoustic panel, the acoustic panel is a plurality of, and is a plurality of the acoustic panel interval sets up, form between the acoustic panel the amortization passageway.
Furthermore, the acoustical panel has and holds the chamber, it is provided with sound absorbing material to hold the intracavity, be provided with on the outer wall of acoustical panel with hold the bloop of chamber intercommunication.
Furthermore, the inner wall and/or the outer wall of the air duct are/is coated with sound insulation materials.
According to a second aspect of the invention, an air conditioning system is disclosed, comprising the variable air volume end device.
According to the variable air volume end device, the silencing component is arranged in the air duct, and the air valve component is arranged at the air inlet, so that noise generated when air passes through the air valve component and noise generated when the air valve component operates are absorbed through the silencing passage of the silencing component, and the purpose of reducing the noise is achieved.
Drawings
FIG. 1 is a schematic structural diagram of an end device with variable air volume according to an embodiment of the present invention;
FIG. 2 is a schematic structural view of a muffler assembly according to an embodiment of the present invention;
FIG. 3 is an enlarged view of a portion of FIG. 2;
legend: 10. a housing; 11. an air inlet; 12. an air outlet; 13. a first air duct; 14. a second air duct; 20. a noise reduction assembly; 21. a sound deadening passage; 211. a silencing hole; 22. a sound-absorbing panel; 30. an air valve assembly; 40. wind speed detection device.
Detailed Description
The present invention is further illustrated by the following examples, but is not limited to the details of the description.
As shown in fig. 1, the present invention discloses an end device of variable air volume, comprising: the silencer comprises a shell 10, a silencing assembly 20 and an air valve assembly 30, wherein the shell 10 is provided with an air inlet 11 and an air outlet 12, and an air channel communicated with the air inlet 11 and the air outlet 12 is further arranged in the shell 10; the silencing assembly 20 is arranged in the air duct, the silencing assembly 20 divides the air duct into a first air duct 13 and a second air duct 14, the first air duct 13 is communicated with the air inlet 11, the second air duct 14 is communicated with the air outlet 12, the silencing assembly 20 is provided with a silencing passage 21, and the first air duct 13 is communicated with the second air duct 14 through the silencing passage 21; the air valve assembly 30 is installed at the position of the air inlet 11, the air valve assembly 30 is used for controlling the air quantity in the air duct, and the silencing passage 21 is used for eliminating noise generated when the air passes through the air valve assembly 30. The variable air volume end device of the invention arranges the silencing component 20 in the air duct and arranges the air valve component 30 at the position of the air inlet 11, thereby absorbing the noise generated by the air passing through the air valve component 30 and the noise of the air valve component 30 when in operation through the silencing channel 21 of the silencing component 20, and further achieving the purpose of reducing the noise.
In the above-described embodiment, the muffler assembly 20 includes an impedance compounding muffler. The variable air volume end device of the invention is provided with the impedance composite silencer in the air duct, which is equivalent to a designed impedance composite silencing channel between the air inlet 11 and the air outlet 12, can effectively absorb the noise generated by the air passing through the air valve assembly 30 and the noise of the air passing through the air valve assembly 30 when in operation, and the flow field of the air is uniformly diffused after passing through the silencing channel 21, and the noise can not be transmitted to the outdoor through the air supply outlet, thereby achieving the purpose of reducing the noise.
In the above embodiment, the sound deadening channel 21 is plural, and the plural sound deadening channels 21 are provided at intervals. The variable air volume end device of the invention can absorb the noise generated by the air passing through the air valve component 30 and the noise of the air valve component 30 when in operation through the noise reduction channel 21 of the noise reduction component 20 by arranging the plurality of noise reduction channels 21 at intervals, thereby achieving the purpose of reducing the noise.
In the above embodiment, the sound-deadening assembly 20 has a honeycomb structure including a plurality of honeycomb units each having one sound-deadening channel 21 therein. The variable air volume end device of the invention can maximally utilize the internal space of the silencing component 20 by arranging the silencing component 20 into a honeycomb structure, and each honeycomb unit is internally provided with a silencing channel 21, and the honeycomb structure has good mechanical property, so that the noise generated when air passes through the air valve component 30 and the noise of the air valve component 30 during operation can be absorbed through the silencing channels 21, thereby achieving the purpose of reducing the noise, reducing the weight of the silencing component 20, ensuring the strength of the silencing component 20, saving the cost and improving the reliability.
Of course, in the above-described embodiment, the cross section of sound deadening channel 21 is hexagonal, and besides, the cross section of sound deadening channel 21 may be polygonal, circular, or the like.
In the above embodiment, the inner wall of the sound deadening channel 21 has the accommodating chamber, the sound deadening hole 211 communicating with the accommodating chamber is provided on the inner wall surface of the sound deadening channel 21, and the sound absorbing material is provided in the accommodating chamber. Preferably, the sound absorbing material envelopes the glass wool. The variable air volume end device has the advantages that the inner wall of the silencing channel 21 is provided with the containing cavity, and the glass wool is arranged in the containing cavity, so that an impedance composite silencing structure is formed, when sound enters the silencing channel 21, a part of sound energy is rubbed in pores of the glass wool and converted into heat energy to be dissipated, meanwhile, the impedance is changed in the sound transmission process through sudden change of the section of the silencing channel and a resonant cavity formed by a pipeline, so that reflection and interference of the sound energy are generated, the sound energy radiated outwards by the silencer is reduced, and the aim of silencing is fulfilled.
In the embodiment shown in FIG. 2, the acoustic abatement assembly 20 comprises: the silencing plate 22 is provided with a plurality of silencing plates 22, the plurality of silencing plates 22 are arranged at intervals, and the silencing passages 21 are formed among the silencing plates 22. The variable air volume end device of the invention achieves the purpose of reducing noise by arranging a plurality of sound deadening plates 22 and forming the sound deadening channel 21 between the sound deadening plates 22 so as to absorb the noise generated when air passes through the air valve assembly 30 and the noise of the air valve assembly 30 when the air valve assembly 30 runs through the sound deadening channel 21.
In the above embodiment, the sound-deadening plate 22 has the housing chamber in which the sound-absorbing material is disposed, and the sound-deadening hole 211 communicating with the housing chamber is disposed on the outer wall of the sound-deadening plate 22. Preferably, the sound absorbing material envelopes the glass wool. The variable air volume end device of the invention has the containing cavity as the sound-deadening plate 22 and the glass wool arranged in the containing cavity, thereby forming an impedance composite sound-deadening structure, when sound enters the sound-deadening channel 21, a part of sound energy rubs in the pores of the glass wool to be converted into heat energy to be dissipated, and meanwhile, the impedance is changed in the sound transmission process to generate reflection and interference of the sound energy through the sudden change of the air channel section and the resonant cavity formed by the pipeline, thereby reducing the sound energy radiated outwards by the sound-deadening device, and achieving the purpose of sound-deadening.
In the above embodiment, the variable air volume terminal device further includes: and the wind speed detection device 40 is arranged at the position of the air outlet 12. Preferably, the wind speed detecting device 40 includes a pitot tube for measuring the wind speed passing through the wind inlet 11 in real time. The air quantity variable end device of the invention is different from the traditional single-air-channel air quantity variable end device in that the air valve component 30 is arranged at the air inlet 11, the air speed detection device 40 is arranged at the air outlet 12, the air valve component and the air speed detection device are not arranged in the same air inlet any more, and a silencing channel is arranged between the air valve component and the air speed detection device, so that the air valve component and the air speed detection device can avoid serious turbulence to air at the same position, and the noise generated when the air passes through the air valve component and the air.
In the above embodiments, the inner wall and/or the outer wall of the air duct is further coated with a sound insulating material. According to the variable air volume end device, the sound insulation material is further coated on the inner wall and/or the outer wall of the air channel, so that the noise reduction effect can be further improved, and compared with the traditional variable air volume end device, the noise is reduced by 2 dB.
According to a second aspect of the invention, an air conditioning system is disclosed, comprising the variable air volume end device.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. Not all embodiments are exhaustive. All obvious changes and modifications which are obvious to the technical scheme of the invention are covered by the protection scope of the invention.
Claims (10)
1. A variable air volume terminal device, comprising:
the air conditioner comprises a shell (10), wherein an air inlet (11) and an air outlet (12) are formed in the shell (10), and an air duct communicated with the air inlet (11) and the air outlet (12) is further formed in the shell (10);
the noise reduction assembly (20) is arranged in the air duct, the noise reduction assembly (20) divides the air duct into a first air duct (13) and a second air duct (14), the first air duct (13) is communicated with the air inlet (11), the second air duct (14) is communicated with the air outlet (12), the noise reduction assembly (20) is provided with a noise reduction channel (21), and the first air duct (13) is communicated with the second air duct (14) through the noise reduction channel (21);
the air valve assembly (30), the air valve assembly (30) is installed at the position of the air inlet (11).
2. The variable air volume terminus device of claim 1 further comprising:
the wind speed detection device (40), wind speed detection device (40) set up in air outlet (12) position department.
3. The variable air volume terminus device of claim 1,
the acoustic attenuation assembly (20) includes an impedance compounding acoustic attenuator.
4. The variable air volume terminus device of claim 1,
the silencing passages (21) are arranged in a plurality, and the silencing passages (21) are arranged at intervals.
5. The variable air volume terminus device of claim 4,
the sound attenuation component (20) is a honeycomb structure which comprises a plurality of honeycomb units, and each honeycomb unit is internally provided with one sound attenuation channel (21).
6. The variable air volume terminus device of claim 4,
the inner wall of amortization passageway (21) has and holds the chamber, be provided with on the internal wall of amortization passageway (21) with hold the amortization hole (211) that the chamber communicates, it is provided with sound absorbing material to hold the intracavity.
7. Variable air volume terminal device according to claim 1, characterized in that the silencing assembly (20) comprises:
the sound-absorbing plates (22) are multiple, the sound-absorbing plates (22) are arranged at intervals, and the sound-absorbing channels (21) are formed among the sound-absorbing plates (22).
8. The variable air volume terminus device of claim 7,
the sound-absorbing plate (22) is provided with an accommodating cavity, a sound-absorbing material is arranged in the accommodating cavity, and a sound-absorbing hole (211) communicated with the accommodating cavity is formed in the outer wall of the sound-absorbing plate (22).
9. The variable air volume terminus device of claim 1,
the inner wall and/or the outer wall of the air duct are/is coated with sound insulation materials.
10. An air conditioning system characterized by comprising the variable air volume terminal device according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911083050.XA CN110822547A (en) | 2019-11-07 | 2019-11-07 | Variable air volume end device with noise reduction function and air conditioning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911083050.XA CN110822547A (en) | 2019-11-07 | 2019-11-07 | Variable air volume end device with noise reduction function and air conditioning system |
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| Publication Number | Publication Date |
|---|---|
| CN110822547A true CN110822547A (en) | 2020-02-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911083050.XA Pending CN110822547A (en) | 2019-11-07 | 2019-11-07 | Variable air volume end device with noise reduction function and air conditioning system |
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| CN (1) | CN110822547A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112432358A (en) * | 2020-10-29 | 2021-03-02 | 青岛海尔空调器有限总公司 | Amortization subassembly and air conditioning system |
-
2019
- 2019-11-07 CN CN201911083050.XA patent/CN110822547A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112432358A (en) * | 2020-10-29 | 2021-03-02 | 青岛海尔空调器有限总公司 | Amortization subassembly and air conditioning system |
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