CN112283809A - Outdoor air conditioner - Google Patents
Outdoor air conditioner Download PDFInfo
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- CN112283809A CN112283809A CN202011197712.9A CN202011197712A CN112283809A CN 112283809 A CN112283809 A CN 112283809A CN 202011197712 A CN202011197712 A CN 202011197712A CN 112283809 A CN112283809 A CN 112283809A
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- sound
- sound insulation
- cavity
- air
- air conditioner
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Images
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
- F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
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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
- F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
- F24F1/08—Compressors specially adapted for separate outdoor units
- F24F1/12—Vibration or noise prevention thereof
-
- 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
- F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
- F24F1/14—Heat exchangers specially adapted for separate outdoor units
- F24F1/16—Arrangement or mounting thereof
-
- 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
- F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
- F24F1/56—Casing or covers of separate outdoor units, e.g. fan guards
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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
- F24F2013/242—Sound-absorbing material
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Compressor (AREA)
Abstract
The invention relates to the technical field of air conditioners, and discloses an outdoor air conditioner, which comprises: a housing; a compressor disposed within the housing; further comprising: the sound insulation cover is arranged on the shell; the sound insulation cap is connected to the sound insulation cover, a placing cavity is formed among the sound insulation cover, the sound insulation cap and the shell, and the compressor is arranged in the placing cavity; the sound-proof cover and the sound-proof cap comprise: the air resonant cavity is used for absorbing sound waves generated when the compressor works; the sound attenuation unit is used for limiting the sound waves to be transmitted from the placing cavity to the outside of the sound insulation cover; the low-frequency noise is effectively absorbed, the physical and mental health of a user is protected, and the user experience when the air conditioner is used is improved.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to an outdoor air conditioner.
Background
Noise pollution is the first of seven public harms in the world, and low-frequency noise is chronic injury to human bodies and cannot be ignored. The low-frequency noise can reach the ear bone of the human body directly and can cause sympathetic nerve tension, tachycardia, blood pressure rise and endocrine dyscrasia of the human body. People are forced to accept the noise and are easily annoyed, irritated and even lose their mind. If the pregnant woman suffers from low-frequency noise for a long time, various neurosis such as neurasthenia, insomnia, headache and the like can be easily caused, and even the fetus in the abdomen of the pregnant woman is affected. The attitude of many people holding the arms is quite incorrect.
At present, the sound insulation cover of the air conditioner compressor generally adopts a design mode of porous sound absorption materials (such as felt or glass wool and the like) + PVC to absorb the high-frequency noise of the compressor. And to the low frequency noise in the compressor, there is basically no absorption effect, so the brand-new sound-proof cover design is urgently needed, the good sound absorption effect of full frequency range is realized, and the sound absorption performance of the sound-proof cover of the compressor is improved.
Disclosure of Invention
In some embodiments of the application, an outdoor air conditioner is provided, the outdoor air conditioner sets up the compressor on the casing, and the peripheral cover of compressor is equipped with sound insulation cover and sound insulation cap, has effectively reduced the spread of compressor during operation noise has promoted user experience.
In some embodiments of the application, a sound insulation cover and a sound insulation cap of an outdoor air conditioner are improved, so that noise generated when the compressor works is obviously reduced or even eliminated through the treatment of the sound insulation cover and the sound insulation cap, and particularly, the sound insulation cover and the sound insulation cap have a remarkable effect on low-frequency noise which is difficult to treat by an existing air conditioner sound insulation device.
In some embodiments of the present application, an air resonance cavity is additionally arranged between the sound insulation cover and the adjacent sound insulation plate of the sound insulation cap, and the air resonance cavity communicated with the interior is formed through specific structure and size design, when the compressor sound wave is transmitted into the air resonant cavity from the passing part of the sound insulation plate, the air resonant cavity is easy to resonate, under the resonance frequency, the air in the air resonance cavity oscillates back and forth, the internal friction among air molecules is oscillated, and the friction between the air molecules and the inner wall of the first layer of sound insulation board or the second layer of sound insulation board, the sound energy is converted into heat energy, the resonance sound absorption effect is achieved, and the oscillation frequency of the gas molecules in each air resonance cavity is different, and the oscillation frequency of the gas molecules in any air resonance cavity is the same, so that a plurality of resonance sound absorption frequencies are formed.
In some embodiments of the present application, a sound-deadening unit is additionally provided, the through portions and the air resonant cavities oppositely disposed on two adjacent sound-insulating panels are formed with a cross-sectional difference, so as to form the sound-deadening unit, the sound-deadening unit is a reactive sound-deadening unit, the reactive sound-deadening unit is formed by combining a pipe and a chamber having a cross-sectional difference interface, the through portion corresponds to the pipe having the cross-sectional difference interface, and the air resonant cavity corresponds to the chamber having the cross-sectional difference interface, when sound waves including various frequency components enter the first through portion, only sound waves of certain frequencies near the natural frequency of the first air resonant cavity can pass through the first air resonant cavity to reach the second through portion, while sound waves of other frequencies cannot pass through the air resonant cavity and can only be reflected back and forth in the air resonant cavity, so that a proper pipe and chamber are selected for combination, the noise of certain frequency components can be filtered out, so that the aim of silencing is fulfilled.
In some embodiments of the present application, there is provided an outdoor air conditioner including: a housing; a compressor disposed within the housing; it is characterized by also comprising: the sound insulation cover is arranged on the shell; the sound insulation cap is connected to the sound insulation cover, a placing cavity is formed among the sound insulation cover, the sound insulation cap and the shell, and the compressor is arranged in the placing cavity; the sound-proof cover and the sound-proof cap comprise: the air resonant cavity is used for absorbing sound waves generated when the compressor works; the sound attenuation unit is used for limiting the sound waves to be transmitted from the placing cavity to the outside of the sound insulation cover.
In some embodiments of this application, work as the sound wave transmits when the air resonance chamber, the sound wave arouses the gas molecule in the air resonance chamber vibrates, in order to convert the sound wave does the internal energy of the gas molecule in the air resonance chamber, or the gas molecule in the air resonance chamber with the internal energy of sound proof cover, wherein the gas molecule produces the looks mutual friction, gas molecule with the inner wall looks mutual friction of sound proof cover consumes partial sound wave, in order to reduce the noise that the compressor during operation produced reaches the effect of making an uproar.
In some embodiments of the present application, the number of the air resonant cavities is set to be a plurality of, and the frequency of the gas molecules in each air resonant cavity oscillating is different, or the frequency of the gas molecules in any air resonant cavity oscillating is the same, so as to eliminate the sound pressure of different frequencies by generating different resonant frequencies, thereby achieving an excellent noise reduction effect.
In some embodiments of the present application, the sound attenuation unit is formed by the passing portion and the air resonant cavity which are oppositely disposed on two adjacent sound insulation plates, and a cross-sectional difference a is formed in the sound attenuation unit, so that the sound pressure generated by the sound wave passing through one end of the sound attenuation unit adjacent to the placing cavity is greater than the sound pressure generated by the sound wave passing through one end of the sound attenuation unit adjacent to the sound attenuation cover and the outside of the sound attenuation cap, the sound attenuation unit generates a cross-sectional difference by using the passing portion and the cross-sectional abrupt change of the air resonant cavity, and causes the change of impedance in the sound transmission process to generate the reflection and interference of sound energy, thereby reducing the sound pressure radiated outwards by the sound attenuation unit, so as to achieve the purpose of sound attenuation.
In some embodiments of the present application, the air resonance cavity is filled with a sound absorbing material; preferably, the sound absorption material is acrylonitrile needle felt or glass wool.
In some embodiments of the present application, the sound-proof enclosure and the sound-proof cap further comprise: the first sound insulation plate is arranged adjacent to the placing cavity, and a plurality of first passing parts are arranged on the first sound insulation plate; the third sound insulation plate is arranged adjacent to the sound insulation cover and the sound insulation cap; the second sound insulation plate is arranged between the first sound insulation plate and the third sound insulation plate, a plurality of second through parts are arranged on the second sound insulation plate, and the first through parts and the second through parts are arranged in a one-to-one opposite mode; the first sound insulation board with be formed with the first chamber that holds between the second sound insulation board, the second sound insulation board with be formed with the second between the third sound insulation board and hold the chamber.
In some embodiments of the present application, the muffler unit includes the first accommodation chamber and the first and second passing portions that are disposed opposite to each other; the air resonance cavity includes a first air resonance cavity and a second air resonance cavity, and the first air resonance cavity includes the first accommodating cavity and a plurality of the first through portions, and the second air resonance cavity includes the second accommodating cavity and a plurality of the second through portions.
In some embodiments of the present application, the number of the second sound insulation plates is set to be plural, and a plurality of third accommodating cavities are formed between the plural second sound insulation plates; the second through parts on two adjacent second sound insulation plates are arranged oppositely one by one; the silencing unit further comprises any third accommodating cavity and a pair of second passing parts positioned on two sides of the third accommodating cavity; the resonance cavity further comprises a plurality of third air resonance cavities, and each third air resonance cavity comprises any one third accommodating cavity and a plurality of second through parts which are positioned on one side of the placing cavity and adjacent to the third accommodating cavity.
According to some embodiments of the present application, the material of the first, second and third sound-proof panels is hard metal, plastic or rubber; preferably, the hard metal is a galvanized plate, a copper plate, a lead plate or an aluminum foil, the plastic is polyvinyl chloride, polypropylene or acrylonitrile-butadiene-styrene copolymer, and the rubber is natural rubber.
According to some embodiments of the present application, the thickness T1 of the first sound-insulating plate, the thickness T2 of the second sound-insulating plate, and the thickness T3 of the third sound-insulating plate are in the range of: T1-T2-T3-30 mm with the thickness of 0.001 mm-T; the distance D1 between the first sound insulation plate and the second sound insulation plate, the distance D2 between the second sound insulation plate and the third sound insulation plate, and the distance D3 between the second sound insulation plates are in the range: d1 ═ D2 ═ D3 ≤ 300 mm; the range of the aperture L1 of each first through part and the aperture L2 of each second through part is: l1 is not less than 0.01mm and not more than L2 and not more than 10 mm; the distance C1 between the first passing parts and the distance C2 between the second passing parts are in the range: 1.01 × L ≦ C1 ≦ C2 ≦ 50 × L.
Drawings
FIG. 1 is a perspective view of an outdoor air conditioner according to an embodiment of the present invention;
FIG. 2 is a schematic view of the interior of an outdoor air conditioner according to an embodiment of the present invention;
FIG. 3 is a schematic view of a sound insulation unit of an outdoor air conditioner according to an embodiment of the present invention;
FIG. 4 is a cross-sectional view of an outdoor air conditioner sound-proof cover or cap according to an embodiment of the present invention;
FIG. 5 is one of the schematic views of an outdoor air conditioner receiving chamber according to an embodiment of the present invention;
FIG. 6 is one of the schematic views of the air resonance cavity of the outdoor air conditioner according to the embodiment of the present invention;
FIG. 7 is one of the schematic views of an outdoor air conditioner receiving chamber according to an embodiment of the present invention;
FIG. 8 is one of the schematic views of the air resonance cavity of the outdoor air conditioner according to the embodiment of the present invention;
FIG. 9 is a schematic view of a sound insulation unit of an outdoor air conditioner according to an embodiment of the present invention;
fig. 10 is a front view of the sound-proof plate of the outdoor air conditioner according to the embodiment of the present invention.
In the figure, 100, an outdoor air conditioner; 110. a compressor; 120. a housing; 130. a column; 140. A fixing sheet;
200. a sound insulating cover; 210. an air resonant cavity; 211. a first accommodating chamber; 212. a second accommodating chamber; 213. a third accommodating chamber; 214. a third air resonant cavity; 220. a first sound insulating panel; 230. a second sound insulating panel; 240. a third sound-insulating panel; 250. a sound attenuation unit; 260. a first passage section; 270. a second passage section; 280. a first air resonant cavity; 290. a second air resonant cavity;
300. a sound insulation cap;
400. a placement chamber.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
In the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present application.
The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless otherwise specified.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
As shown in fig. 1, an outdoor air conditioner 100 according to a preferred embodiment of the present invention performs a refrigeration cycle of the air conditioner by using a compressor 110, a condenser, an expansion valve, and an evaporator. The refrigeration cycle includes a series of processes involving compression, condensation, expansion, and evaporation, and supplies refrigerant to the air that has been conditioned and heat-exchanged.
The compressor 110 is disposed in the casing 120, and the compressor 110 compresses a refrigerant gas in a high-temperature and high-pressure state and discharges the compressed refrigerant gas. The discharged refrigerant gas flows into the condenser. The condenser condenses the compressed refrigerant into a liquid state, and heat is released to the surrounding environment through the condensation process.
The expansion valve expands the liquid-phase refrigerant in a high-temperature and high-pressure state condensed in the condenser into a low-pressure liquid-phase refrigerant. The evaporator evaporates the refrigerant expanded in the expansion valve and returns the refrigerant gas in a low-temperature and low-pressure state to the compressor 110. The evaporator can achieve a cooling effect by heat-exchanging with a material to be cooled using latent heat of evaporation of a refrigerant. The air conditioner can adjust the temperature of the indoor space throughout the cycle.
The outdoor unit of the air conditioner refers to a portion of a refrigeration cycle including the compressor 110 and the outdoor heat exchanger, the indoor unit of the air conditioner includes the indoor heat exchanger, and the expansion valve may be provided in the indoor unit or the outdoor unit.
The outdoor heat exchanger and the indoor heat exchanger function as an evaporator or a condenser. When the indoor heat exchanger is used as a condenser, the air conditioner is used as a heater in a heating mode, and when the indoor heat exchanger is used as an evaporator, the air conditioner is used as a cooler in a cooling mode.
As shown in fig. 2 and 3, according to some embodiments of the present disclosure, the bottom plate of the housing 120 extends upward to form the upright 130, the bottom plate of the housing 120 extends outward to form the fixing plate 140, and the upright 130 and the fixing plate 140 are provided with screw holes.
The upright 130 on the bottom plate of the housing 120 is used for fixing the compressor 110, so that the compressor 110 is kept stable during operation; the fixing sheet 140 on the bottom plate of the housing 120 is used for fixing the air conditioner, so that the air conditioner is kept stable in the working process; the motion amplitude of the air conditioner is reduced, and the noise generated in the working process of the air conditioner is reduced.
As shown in fig. 2 and 3, according to some embodiments of the present application, the sound-proof cover 200 has a ring shape, the sound-proof cover 200 includes a top surface, a bottom surface, an outer surface and an inner surface, and the sound-proof cover 200 is formed by a plurality of sound-proof plates and air resonance chambers 210 between the adjacent sound-proof plates.
The sound insulation cover 200 is disposed on the housing 120, the sound insulation cover 200 covers the entire side of the compressor 110, and the sound insulation cover 200 is hermetically connected to the bottom plate.
The shape of the sound-proof cap 300 is identical to the top surface of the sound-proof cover 200, and the sound-proof cap 300 is formed by a plurality of sound-proof plates and air resonance cavities 210 between adjacent sound-proof plates.
A sound-proof cap 300 is attached to the top surface of the sound-proof housing 200, and the sound-proof cap 300 covers the top surface of the compressor 110.
A placing cavity 400 is formed among the sound insulation cover 200, the sound insulation cap 300 and the shell 120, and the compressor 110 is arranged in the placing cavity 400 so as to reduce sound waves emitted by the compressor 110 during operation through the silencing effect of the sound insulation cover 200 and the sound insulation cap 300.
As shown in fig. 6, according to some embodiments of the present application, when the sound wave is transmitted to the air resonant cavity 210, the sound wave causes the gas molecules in the air resonant cavity 210 to oscillate, so as to convert the sound wave into the internal energy of the gas molecules in the air resonant cavity 210, or the gas molecules in the air resonant cavity 210 and the internal energy of the sound-insulating cover 200, wherein the gas molecules rub against each other, and the gas molecules rub against the inner wall of the sound-insulating cover 200, consuming part of the sound wave, so as to reduce the noise generated when the compressor 110 operates, thereby achieving the effect of reducing the noise.
The number of the air resonant cavities 210 is set to be plural, and the frequency of the gas molecules in each air resonant cavity 210 is different, or the frequency of the gas molecules in any air resonant cavity 210 is the same.
When the sound waves are transmitted, the frequency of the gas molecules in each air resonant cavity 210 is different, or the frequency of the gas molecules in any air resonant cavity 210 is the same, for example, when the number of the air resonant cavities 210 is 2, X, Y represents two air resonant cavities 210, and the number of the formed resonance combinations is 3{ (X), (Y), (X, Y) }; when the number of the air resonators 210 is 3, X, Y, Z represents two air resonators 210, the number of the resonance combinations is 7{ (X), (Y), (Z), (X, Y), (X, Z), (Y, Z), (X, Y, Z) }, and so on, by generating different resonance frequencies, the sound pressures of different frequencies are eliminated, and the excellent noise reduction effect is achieved.
As shown in fig. 4, according to some embodiments of the present application, a cross-sectional difference a is formed in the sound-deadening unit 250 so that a sound pressure generated when the sound wave passes through an end of the sound-deadening unit 250 adjacent to the placement chamber 400 is greater than a sound pressure generated when the sound wave passes through an end of the sound-deadening unit 250 adjacent to the exterior of the sound-deadening cover and the sound-deadening cap.
The silencing unit 250 utilizes the abrupt change of the cross section of the passing part (the first passing part and the second passing part) and the air resonant cavity 210 to generate the cross section difference, and the impedance is changed in the sound wave transmission process to generate the reflection and interference of sound energy, so that a part of sound waves cannot enter the next passing part and are continuously reflected or reflected into the placing cavity 400 in the air resonant cavity 210, and the sound pressure emitted outwards by the silencing unit 250 is reduced, thereby achieving the purpose of silencing.
According to some embodiments of the present application, the air resonance chamber 210 is filled with a sound absorbing material, which is acrylonitrile needle felt or glass wool.
The acrylonitrile needle felt or the glass wool in the air resonant cavity 210 is made of flexible material, when sound waves enter the air resonant cavity 210 through the passing part, due to the action of the noise elimination unit 250, part of the sound waves cannot enter the next passing part, the part of the sound waves are left in the air resonant cavity 210 to be reflected, and the acrylonitrile needle felt or the glass wool can absorb the part of the sound waves more quickly, so that a better sound absorption effect is achieved.
As shown in fig. 6, in some embodiments according to the present application, the sound-proof cover 200 and the sound-proof cap 300 include: the first sound insulation plate 220 is arranged adjacent to the placing cavity 400, and a plurality of first passing parts 260 are arranged on the first sound insulation plate 220; a third sound-proof plate 240, the third sound-proof plate 240 being disposed adjacent to the sound-proof cover 200 and the sound-proof cap 300; a second sound-insulating panel 230, the second sound-insulating panel 230 being disposed between the first sound-insulating panel 220 and the third sound-insulating panel 240,
the second sound insulation plate 230 is provided with a plurality of second passing parts 270, and the plurality of first passing parts 260 and the plurality of second passing parts 270 are arranged in a one-to-one opposite manner; a first receiving chamber 211 is formed between the first and second sound-insulating panels 220 and 230, and a second receiving chamber 212 is formed between the second and third sound-insulating panels 230 and 240.
Referring to fig. 4 and 5, according to some embodiments of the present application, the muffler unit 250 includes a first receiving chamber 211 and a first through-part 260 and a second through-part 270 disposed opposite to each other, the air resonance chamber 210 includes a first air resonance chamber 280 and a second air resonance chamber 290, and the first air resonance chamber 280 includes the first receiving chamber 211 and the plurality of first through-parts 260, and the second air resonance chamber 290 includes the second receiving chamber 212 and the plurality of second through-parts 270.
Through the above-mentioned structural design, two air resonance cavities 210 (a first air resonance cavity and a second resonance air) are formed, and after the sound wave of the compressor 110 is transmitted into the two air resonance cavities 210 from the passing portions (the first passing portion 260 and the second passing portion 270) of the first sound-insulating plate 220 and the second sound-insulating plate 230, each or two air resonance cavities 210 are caused to resonate, and under the same or different resonance frequencies, the air in each air resonance cavity 210 oscillates back and forth, so that the friction between the molecules of the oscillating air, and the friction between the molecules of the air and the inner wall of the first sound-insulating plate 220, the second sound-insulating plate 230 or the third sound-insulating plate 240 convert the sound energy into internal energy, thereby achieving the effect of resonant sound absorption.
The first air resonant cavity 280 resonates with a first-order resonant frequency, the second air resonant cavity 290 resonates with a second-order resonant frequency, and the first air resonant cavity 280 and the second air resonant cavity 290 resonate simultaneously with a third-order resonant frequency, so that the design scheme of communicating the two air resonant cavities 210 at least has a resonant sound absorption frequency.
Referring to fig. 7, 8 and 9, according to further embodiments of the present application, sound-proof enclosure 200 and sound-proof cap 300 comprise: the first sound insulation plate 220 is arranged adjacent to the placing cavity 400, and a plurality of first passing parts 260 are arranged on the first sound insulation plate 220; a third sound-proof plate 240, the third sound-proof plate 240 being disposed adjacent to the sound-proof cover 200 and the sound-proof cap 300; the second sound insulation plate 230, the second sound insulation plate 230 is arranged between the first sound insulation plate 220 and the third sound insulation plate 240, the second sound insulation plate 230 is provided with a plurality of second passing parts 270, and the plurality of first passing parts 260 and the plurality of second passing parts 270 are arranged in a one-to-one opposite manner; a first receiving chamber 211 is formed between the first and second sound-insulating panels 220 and 230, and a second receiving chamber 212 is formed between the second and third sound-insulating panels 230 and 240.
In addition, the number of the second sound insulation plates 230 is set to be plural, and a plurality of third accommodation cavities 213 are formed between the plurality of second sound insulation plates 230; and the second through parts 270 of two adjacent second sound insulation plates 230 are arranged opposite to each other.
The muffler unit 250 further includes any one of the third receiving chambers 213 and a pair of second passing portions 270 located at both sides of the third receiving chamber 213.
The resonant cavity further includes a plurality of third air resonant cavities 214, and each of the third air resonant cavities 214 includes any one of the third receiving cavities 213 and a plurality of second pass-through portions 270 located on the side of the placement cavity 400 and adjacent to the third receiving cavity 213.
Through the above-mentioned structural design, a plurality of air resonance cavities 210 are formed, and after the sound waves of the compressor 110 are transmitted into the plurality of air resonance cavities 210 from the through portions (the first through portion 260 and the second through portion 270) of the first sound-insulating plate 220 and the plurality of second sound-insulating plates 230, each air resonance cavity 210 is caused to resonate or the plurality of air resonance cavities 210 resonate together, and at the same or different resonance frequencies, the air in each air resonance cavity 210 oscillates back and forth, so that the friction between the oscillating air molecules and the friction between the air molecules and the inner walls of the first sound-insulating plate 220, the third sound-insulating plate 240 or the plurality of second sound-insulating plates 230 convert the sound energy into internal energy, thereby achieving the resonant sound absorption effect.
When the number of the air resonant cavities 210 is 2, the X, Y indicates two air resonant cavities 210, the number of the formed resonance combinations is 3{ (X), (Y), (X, Y) }, and when the number of the air resonant cavities 210 is 3, the X, Y, Z indicates two air resonant cavities 210, the number of the formed resonance combinations is 7{ (X), (Y), (Z), (X, Y), (X, Z), (Y, Z), (X, Y, Z) }), multiple resonance frequencies are generated to absorb sound waves together, thereby achieving the sound absorption and noise reduction effects.
According to some embodiments of the present application, the material of the first, second, and third sound-insulating panels 220, 230, and 240 is hard metal, plastic, or rubber.
According to some embodiments of the present application, the hard metal is galvanized sheet, copper sheet, lead sheet or aluminum foil, the plastic is polyvinyl chloride, polypropylene or acrylonitrile-butadiene-styrene copolymer, and the rubber is natural rubber.
Referring to fig. 5 and 8, according to some embodiments of the present application, the thickness T1 of the first sound barrier 220, the thickness T2 of the second sound barrier 230, and the thickness T3 of the third sound barrier 240 are in the range of: T1-T2-T3-30 mm with the thickness of 0.001 mm-T; the distance D1 between the first sound-insulating plate 220 and the second sound-insulating plate 230, the distance D2 between the second sound-insulating plate 230 and the third sound-insulating plate 240, and the distance D3 between the plurality of second sound-insulating plates 230 are in the range of: d1 ═ D2 ═ D3 ≤ 300 mm; the range of the aperture L1 of each first passing portion 260 and the aperture L2 of each second passing portion 270 is: l1 is not less than 0.01mm and not more than L2 and not more than 10 mm; the distance C1 between the first plurality of passing portions 260 and the distance C2 between the second plurality of passing portions 270 range from: 1.01 × L is less than or equal to C, and 1 × C2 is less than or equal to 50 × L.
According to the first concept of the application, the sound insulation cover and the sound insulation cap of the outdoor air conditioner are improved, the compressor is completely closed by the sound insulation cover, the sound insulation cap and the shell, when noise sound waves generated during the operation of the compressor are transmitted to the sound insulation cover and the sound insulation cap, the noise sound waves are obviously reduced and even eliminated through the treatment of the sound insulation cover and the sound insulation cap, particularly, the low-frequency noise which is difficult to treat by the existing air conditioner sound insulation device is obviously reduced, the sound insulation cover and the sound insulation cap can be installed on the whole machine, the OA (over all) value of the whole machine noise is reduced by 3dBA, the low-frequency single peak value is reduced by more than 11dBA, the noise of the whole machine is effectively reduced, and the low-frequency single peak value.
According to the second concept of the application, the air resonant cavity is additionally arranged between the sound insulation cover and the adjacent sound insulation plates of the sound insulation cap, when sound waves are transmitted to the air resonant cavity, air in the air resonant cavity vibrates back and forth at the resonant frequency, the air molecules vibrate with each other, and the air molecules rub with the inner wall of the inner layer or the middle layer sound insulation plate, sound energy is converted into heat energy, a resonant sound absorption effect is achieved, the sound waves with partial frequency are absorbed, the frequency of the gas molecules in each air resonant cavity is different, the frequency of the gas molecules in any air resonant cavity is the same, a plurality of resonant sound absorption frequencies are formed, the frequency of the absorbable sound waves is increased, the noise sound waves are absorbed to a greater extent, and the user experience is improved.
According to the third concept of the application, the silencing unit is additionally arranged and consists of the passing parts and the air resonant cavities which are oppositely arranged on the two adjacent sound insulation plates, when sound waves containing various frequency components enter the first passing part, only sound waves with certain frequencies near the natural frequency of the first air resonant cavity can pass through the first air resonant cavity to reach the second passing part, and sound waves with other frequencies cannot pass through the air resonant cavity, and the sound waves can be reflected back and forth in the air resonant cavity until the sound waves are eliminated, so that the noise sound waves with partial frequencies are thoroughly eliminated, the noise sound waves generated in the working process of the air conditioner are reduced, a user cannot be influenced by low-frequency noise when the air conditioner is used, and the body and mind health of the user is facilitated.
According to the fourth concept of the present application, the acrylonitrile needle felt or the glass wool is filled in the air resonant cavity, and when the sound wave collides with the acrylonitrile needle felt or the glass wool, the acrylonitrile needle felt and the glass wool are both flexible materials, so that the vibration or the vibration frequency is not extremely low along with the sound wave, and the sound wave reflected in the air resonant cavity is rapidly absorbed.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.
Claims (10)
1. An outdoor air conditioner comprising:
a housing;
a compressor disposed within the housing;
it is characterized by also comprising:
the sound insulation cover is arranged on the shell;
the sound insulation cap is connected to the sound insulation cover, a placing cavity is formed among the sound insulation cover, the sound insulation cap and the shell, and the compressor is arranged in the placing cavity;
the sound-proof cover and the sound-proof cap comprise:
the air resonant cavity is used for absorbing sound waves generated when the compressor works;
the sound attenuation unit is used for limiting the sound waves to be transmitted from the placing cavity to the outside of the sound insulation cover.
2. The outdoor air conditioner as claimed in claim 1, wherein when the sound wave is transmitted to the air resonance cavity, the sound wave causes the gas molecules in the air resonance cavity to oscillate so as to convert the sound wave into the internal energy of the gas molecules in the air resonance cavity or the internal energy of the gas molecules in the air resonance cavity and the sound insulation cover.
3. The outdoor air conditioner according to claim 2, wherein the number of the air resonance chambers is plural, and the resonance frequency of the gas molecular oscillation in each of the air resonance chambers is different or the resonance frequency of the gas molecular oscillation in any one of the air resonance chambers is the same.
4. The outdoor air conditioner according to claim 1, wherein a difference in cross section is formed in said sound attenuation unit so that a sound pressure generated by said sound wave passing through an end of said sound attenuation unit adjacent to said placing chamber is greater than a sound pressure generated by said sound wave passing through an end of said sound attenuation unit adjacent to an outside of said sound attenuation cover and said sound attenuation cap.
5. The outdoor air conditioner according to claim 3, wherein said air resonance chamber is filled with a sound absorbing material;
preferably, the sound absorption material is acrylonitrile needle felt or glass wool.
6. The outdoor air conditioner according to any one of claims 1 to 5, wherein said sound-proof cover and said sound-proof cap further comprise:
the first sound insulation plate is arranged adjacent to the placing cavity, and a plurality of first passing parts are arranged on the first sound insulation plate;
the third sound insulation plate is arranged adjacent to the sound insulation cover and the sound insulation cap;
the second sound insulation plate is arranged between the first sound insulation plate and the third sound insulation plate, a plurality of second through parts are arranged on the second sound insulation plate, and the first through parts and the second through parts are arranged in a one-to-one opposite mode;
the first sound insulation board with be formed with the first chamber that holds between the second sound insulation board, the second sound insulation board with be formed with the second between the third sound insulation board and hold the chamber.
7. The outdoor air conditioner according to claim 6, wherein the muffler unit includes the first accommodation chamber and the first and second passing portions which are disposed oppositely;
the air resonance cavity includes a first air resonance cavity and a second air resonance cavity, and the first air resonance cavity includes the first accommodating cavity and a plurality of the first through portions, and the second air resonance cavity includes the second accommodating cavity and a plurality of the second through portions.
8. The outdoor air conditioner according to claim 7, wherein the number of the second sound-insulating panels is provided in plural, and plural third receiving chambers are formed among the plural second sound-insulating panels;
the second through parts on two adjacent second sound insulation plates are arranged oppositely one by one;
the silencing unit further comprises any third accommodating cavity and a pair of second passing parts positioned on two sides of the third accommodating cavity;
the resonance cavity further comprises a plurality of third air resonance cavities, and each third air resonance cavity comprises any one third accommodating cavity and a plurality of second through parts which are positioned on one side of the placing cavity and adjacent to the third accommodating cavity.
9. The outdoor air conditioner according to claim 8, wherein the material of said first sound-insulating panel, said second sound-insulating panel and said third sound-insulating panel is a hard metal, plastic or rubber;
preferably, the hard metal is a galvanized plate, a copper plate, a lead plate or an aluminum foil, the plastic is polyvinyl chloride, polypropylene or acrylonitrile-butadiene-styrene copolymer, and the rubber is natural rubber.
10. The outdoor air conditioner of claim 8, wherein the thickness T1 of the first sound-insulating plate, the thickness T2 of the second sound-insulating plate, and the thickness T3 of the third sound-insulating plate are in the range of: T1-T2-T3-30 mm with the thickness of 0.001 mm-T;
the distance D1 between the first sound insulation plate and the second sound insulation plate, the distance D2 between the second sound insulation plate and the third sound insulation plate, and the distance D3 between the second sound insulation plates are in the range: d1 ═ D2 ═ D3 ≤ 300 mm;
the range of the aperture L1 of each first through part and the aperture L2 of each second through part is: l1 is not less than 0.01mm and not more than L2 and not more than 10 mm;
the distance C1 between the first passing parts and the distance C2 between the second passing parts are in the range: 1.01 × L ≦ C1 ≦ C2 ≦ 50 × L.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011197712.9A CN112283809A (en) | 2020-10-30 | 2020-10-30 | Outdoor air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011197712.9A CN112283809A (en) | 2020-10-30 | 2020-10-30 | Outdoor air conditioner |
Publications (1)
| Publication Number | Publication Date |
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| CN112283809A true CN112283809A (en) | 2021-01-29 |
Family
ID=74352887
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|---|---|---|---|
| CN202011197712.9A Pending CN112283809A (en) | 2020-10-30 | 2020-10-30 | Outdoor air conditioner |
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