CN103322619A - Indoor unit of duct air conditioner - Google Patents
Indoor unit of duct air conditioner Download PDFInfo
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- CN103322619A CN103322619A CN2013102514151A CN201310251415A CN103322619A CN 103322619 A CN103322619 A CN 103322619A CN 2013102514151 A CN2013102514151 A CN 2013102514151A CN 201310251415 A CN201310251415 A CN 201310251415A CN 103322619 A CN103322619 A CN 103322619A
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- flow fan
- cross flow
- acoustical lining
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Abstract
The invention discloses an indoor unit of a duct air conditioner. The indoor unit comprises a shell, a cross-flow fan, a heat exchanger, sound absorbing layers, a first sound-absorbent partition, and a second sound-absorbent partition. The shell comprises a front board, a rear board, a top board, and a bottom board. The cross-flow fan, the heat exchanger, the sound absorbing layer, the first sound-absorbent partition and the second sound-absorbent partition are disposed in the shell. An air passage is formed between an air inlet and a lower return air hole. The cross-flow fan is disposed in the left air passage above the lower return air hole. The heat exchanger is disposed in the left air passage of the cross-flow fan. One sound absorbing layer is attached to the surface of the inner wall of a right top board of the cross-flow fan, and the first sound-absorbent partition is disposed on the inner wall of the top board on the upper left of the lower return air hole. The other sound absorbing layer is attached to the surface of the inner wall of a right bottom board of the cross-flow fan, and the second sound-absorbent partition is disposed on the inner wall of the bottom board adjacent to the left of the lower return air hole. The indoor unit in application has the advantages that air conditioner noise can be reduced, pressure loss of airflow in the air passage can be reduced and air conditioner efficiency can be improved.
Description
Technical field
The present invention relates to air-conditioning technical field, relate in particular to a kind of air duct type air conditioning indoor machine.
Background technology
Because air duct type air conditioning indoor machine can circulate by driving room air, thereby the higher indoor refrigeration of implementation efficiency or heat is installed in the places such as hotel that indoor environment is had relatively high expectations, school, office building more.But because air duct type air conditioning indoor machine is in when operation, the noise of generation easily affects the user, thereby, in the design of air duct type air conditioning indoor machine, improve equipment by optimization, reduce the noise that air duct type air conditioning indoor machine produces and just seem particularly important.
The noise of air duct type air conditioning indoor machine mainly comes from the aerodynamic noise of cross flow fan, by impeller and drive cross flow fan that the motor of this wheel rotation forms be usually located at lower return air inlet directly over, when air duct type air conditioning indoor machine adopts lower air return method operation, noise is easy to propagate into indoor by lower return air inlet, and simply with under the position deviation cross flow fan of lower return air inlet, can not produce obvious noise reduction.
At present, mainly adopt the mode that in housing, increases many group dividing plates to reduce the noise of air-conditioning during the air duct type air conditioning indoor machine design, for example, in patent CN2336261Y " noise control ventilation blower ", proposition utilizes the polylith dividing plate to be crisscross arranged and form the mode of S shape passage in Blower Housing, reach the purpose that reduces noise, but when air-flow is organized the housing of dividing plates by being mounted with more, easily cause serious stream pressure loss, cross flow fan for the not strong air duct type air conditioning indoor machine of boost capability, serious stream pressure loss can affect the performance of whole air-conditioning, so that air-conditioner efficiency is not high.
Summary of the invention
Goal of the invention of the present invention is to provide a kind of air duct type air conditioning indoor machine, reduces stream pressure loss in the air channel, promotes air-conditioner efficiency.
An aspect provides a kind of air duct type air conditioning indoor machine according to an embodiment of the invention, comprising: housing, cross flow fan, heat exchanger, sound absorbing layer, the first acoustical lining, the second acoustical lining; Described cross flow fan be used for the indoor wind of part is sucked by the lower return air inlet of offering on the described housing, and the indoor wind that will suck is delivered to described heat exchanger; Described heat exchanger after being used for carrying out heat exchange by the indoor wind that described cross flow fan is carried, is sent into indoor by the air outlet of offering on the housing; Described sound absorbing layer is attached to the surface of described the first acoustical lining, described the second acoustical lining and described inner walls, is used for absorbing the partial noise that described cross flow fan operation produces; Described the first acoustical lining after being used for described sound absorbing layer by surface attachment and absorbing the partial noise that described cross flow fan produces, reflexes to described inner walls with unabsorbed noise; Described the second acoustical lining after being used for described sound absorbing layer by surface attachment and absorbing the partial noise that described cross flow fan produces, reflexes to described inner walls with unabsorbed noise.
Preferably, described cross flow fan, described heat exchanger, described sound absorbing layer, described the first acoustical lining and described the second acoustical lining are built in the described housing, form the air channel between described air outlet and the described lower return air inlet.
Preferably, described housing further comprises: header board, rear plate, top board, base plate; Described header board forms the front portion of described housing, offers for the described air outlet to indoor air-supply; Described rear plate forms the rear portion of described housing, the described sound absorbing layer of the surface attachment of described rear plate inwall; Described top board forms the top of described housing, at the described sound absorbing layer of surface attachment of the described top board inwall that is positioned at described cross flow fan right side, and being positioned at next time the described top board inwall of upper left side, air port arranges described the first acoustical lining; Described base plate, form the bottom of described housing, offer described lower return air inlet, at the described sound absorbing layer of surface attachment of the described plate inner wall that is positioned at described cross flow fan right side, and the described plate inner wall in return air inlet left side arranges described the second acoustical lining under the next-door neighbour.
Preferably, described cross flow fan is arranged in the left air path of described lower return air inlet top, being positioned at described cross flow fan left air path, described heat exchanger is set.
Preferably, described the first acoustical lining is inclined at described top board inwall, and described the second acoustical lining is inclined at described plate inner wall.
Preferably, the angle of described the first acoustical lining and described top board inwall formation is less than the angle of described the second acoustical lining and the formation of described plate inner wall.
Preferably, the angle that described the first acoustical lining and described top board inwall form is 140 degree, and the angle that described the second acoustical lining and described plate inner wall form is in 150 to 160 degree scopes.
Preferably, described the first acoustical lining is not less than 50mm along the distance of placement direction and described cross flow fan, and the vertical range of described rear plate and described cross flow fan is not less than 200mm.
Preferably, the ratio of the height of the width of described lower return air inlet and described rear plate is greater than 0.55.
By as seen above-mentioned, in the technical scheme of the embodiment of the invention, by covering sound-absorbing material in enclosure interior, and be obliquely installed a dividing plate that covers sound-absorbing material at top board, be obliquely installed the dividing plate reduction air-conditioning noise that another piece covers sound-absorbing material equally at base plate, not only simple in structure, can also reduce stream pressure loss in the air channel, promote air-conditioner efficiency.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, below will do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art.Apparently, the accompanying drawing in below describing only is some embodiments of the present invention, for those of ordinary skills, can also obtain according to these accompanying drawing illustrated embodiments other embodiment and accompanying drawing thereof.
Fig. 1 is the structural representation of embodiment of the invention air duct type air conditioning indoor machine.
The specific embodiment
For making purpose of the present invention, technical scheme and advantage clearer, referring to accompanying drawing and enumerate preferred embodiment, the present invention is described in more detail.Yet, need to prove, many details of listing in the specification only are in order to make the reader to one or more aspects of the present invention a thorough understanding be arranged, even if there are not these specific details also can realize these aspects of the present invention.
At present, air duct type air conditioning indoor machine generally adopts the mode of settling many group dividing plates in housing, the noise that reduction is produced by cross flow fan, but when air duct type air conditioning indoor machine adopts lower air return method operation, when the room air air-flow in the suction casing passes through multistage dividing plate, can cause the serious pressure loss, be not very strong cross flow fan for boost capability, the serious pressure loss can affect the performance of whole air duct type air conditioning indoor machine.
In embodiments of the present invention, proposed a kind of air duct type air conditioning indoor machine, by covering sound-absorbing material in enclosure interior, and two same dividing plates that cover sound-absorbing materials are set have reduced air-conditioning noises, not only simple in structure, can also reduce stream pressure loss in the air channel, promote air-conditioner efficiency.
Fig. 1 is the structural representation of embodiment of the invention air duct type air conditioning indoor machine.Referring to Fig. 1, comprising: lower return air inlet 101, cross flow fan 102, heat exchanger 103, air outlet 104, sound absorbing layer 105, the first acoustical lining 106, the second acoustical lining 107, housing 108; Wherein,
In the embodiment of the invention, air duct type air conditioning indoor machine adopts lower air return method operation, after cross flow fan 102 starts, by lower return air inlet 101, wind in the suction chamber, and change indoor distinguished and admirable speed and the flow direction that sucks, increase the indoor wind pressure that sucks, then, the indoor wind that sucks is delivered to heat exchanger 103.
In the embodiment of the invention, heat exchange is included in cools off in the heat exchanger 103 or heats.Cool off or heat treated after, send into indoor by air outlet 104.
Room air is sucked by cross flow fan 102, sends into indoorly after over-heat-exchanger 103 is processed again, and constantly circulation reaches and reduces or the effect of rising indoor temperature.
In embodiments of the present invention, in the housing 108 stably air-flow interrupted by the blade of the rotation in the cross flow fan 102, occur to accelerate and the speed turnover, so that the mobile deterioration of the entry zone of impeller produces noise, the noise sound wave be radial along all directions in housing 108 interior propagation, when being transmitted to sound absorbing layer 105, partially absorbed by sound absorbing layer 105, be transmitted to indoor noise thereby weaken by lower return air inlet 101.
The first acoustical lining 106 after the partial noise for sound absorbing layer 105 absorption cross flow fans 102 generations of passing through surface attachment, reflexes to housing 108 inwalls with unabsorbed noise;
The second acoustical lining 107 after the partial noise for sound absorbing layer 105 absorption cross flow fans 102 generations of passing through surface attachment, reflexes to housing 108 inwalls with unabsorbed noise.
Preferably, the air channel that is communicated with for being formed by housing 108 between lower return air inlet 101 and the air outlet 106, cross flow fan 102 is arranged in the lower return air inlet 101 top left air path, cross flow fan 102 is comprised of the motor of impeller and this wheel rotation of driving, be provided for heat exchanger 103 that air is cooled off or heats being positioned at cross flow fan 102 left air path, the top board 108c inwall of 101 upper left sides, air port arranges the first acoustical lining 106 being positioned at next time, the first acoustical lining 106 is obliquely installed, the obtuse angle that forms with top board 108c inwall is α, and puigging 105 is attached to the surface of top plate 108c inwall.The base plate 108d inwall in return air inlet 101 left sides arranges the second acoustical lining 107, the second acoustical linings 107 and is obliquely installed under the next-door neighbour, and the obtuse angle that forms with base plate 108d inwall is β, and puigging 105 is attached to the surface of base plate 108d inwall.
Further, the obtuse angles beta that the obtuse angle alpha that the first acoustical lining 106 and top board 108c inwall form, the second acoustical lining 107 and base plate 108d inwall form, the first acoustical lining 106 along the ratio Q of the height H of the width C of the distance A of placement direction and cross flow fan 102, lower return air inlet 101 and rear plate 108b and, the vertical range B of rear plate 108b and cross flow fan 102 all affects the noise reduction of air duct type air conditioning indoor machine, intake and the pressure loss of air-flow in the air channel of cross flow fan 102.
Wherein, the first acoustical lining 106 is along the effect of the vertical range B major effect noise abatement of the distance A of placement direction and cross flow fan 102 and rear plate 108b and cross flow fan 102; The first acoustical lining 106 and obtuse angle alpha and the second acoustical lining 107 and the obtuse angles beta that base plate 108d inwall forms that top board 108c inwall forms affect the pressure loss of air-flow in the air channel; The ratio Q of the height H of the width C of lower return air inlet 101 and rear plate 108b affects the intake of cross flow fan 102.
In actual applications, by adjusting above-mentioned parameter numerical value, test the contrast experiment of its intake on air duct type air conditioning indoor machine noise, cross flow fan 102, the air-flow pressure loss impact in the air channel, can obtain the concrete numerical value of the parameter of one group of optimum, to guarantee to tilt with α angle and top board 108c inwall when the first acoustical lining 106, when the second acoustical lining 107 tilts with β angle and base plate 108d inwall, the first acoustical lining 106 and the second acoustical lining 107 are in effective absorption of noise sound wave, and be little to the loss of the stream pressure in the air channel.For example, when the ratio of the height H of the width C of return air inlet 101 and rear plate 108b adopts the Q value of optimizing instantly, intake impact on cross flow fan 102 is little, as distance the A for optimize of the first acoustical lining 106 along placement direction and cross flow fan 102, when the vertical range of rear plate 108b and cross flow fan 102 was the B that optimizes, sound absorbing layer 105 can effectively absorb the noise sound wave that is produced by cross flow fan 102.
Preferably, in embodiments of the present invention, the obtuse angles beta that the obtuse angle alpha that the first acoustical lining 106 and top board 108c inwall form forms less than the second acoustical lining 107 and base plate 108d inwall, and α is about 140 degree, β is in 150～160 degree scopes, the first acoustical lining 106 is not less than 50mm with the beeline A of cross flow fan 102, the vertical range B ultrasonic of rear plate 108b and cross flow fan 102 is crossed 200mm, the ratio Q of the height H of the width C of return air inlet 101 and rear plate 108b is not less than 0.55, adopt above-mentioned setting, because only the inwall at housing arranges acoustical lining in both sides up and down, stream pressure loss in the air channel of air duct type air conditioning indoor machine is little, intake impact on cross flow fan 102 is little, so that the cross flow fan of the not strong air duct type air conditioning indoor machine of boost capability, can effectively drive room air and circulate, ensure the performance of air duct type air conditioning indoor machine, effectively promote air-conditioner efficiency; Simultaneously, by adhering to sound absorbing layer in inner walls and acoustical lining, can effectively reduce the noise that is produced by cross flow fan 102.
The air duct type air conditioning indoor machine operation principle of the embodiment of the invention: air-conditioning adopts lower air return method operation, motor-driven wheel rotation in the cross flow fan 102, by lower return air inlet 101, by wind in the suction chamber of impeller inlet zone, and indoor distinguished and admirable speed and the flow direction of change suction, increase the indoor wind pressure that sucks, then, the indoor wind that sucks is delivered to the heat exchanger 103 that is positioned at cross flow fan 102 left sides, heat exchanger 103 will be sent into indoor by air outlet 104 after will carrying out heat exchange by the indoor wind that cross flow fan 102 is carried.Simultaneously, the noise sound wave that produces in cross flow fan 102 runnings be radial along all directions in housing 108 interior propagation, wherein, the noise sound wave part that is transmitted to top board 108c is absorbed by the sound absorbing layer 105 of the surface attachment of top board 108c inwall, the noise sound wave part that is transmitted to rear plate 108b is absorbed by the sound absorbing layer 105 of the surface attachment of rear plate 108b inwall, the noise sound wave part that is transmitted to base plate 108d is absorbed by the sound absorbing layer 105 of the surface attachment of base plate 108d inwall, the noise sound wave part that is transmitted to the first dividing plate 106 is absorbed by the sound absorbing layer 105 of the first dividing plate 106 surface attachment, unabsorbed noise sound wave is reflexed to housing 108 inwalls by the first dividing plate 106, the noise sound wave part that is transmitted to second partition 107 is absorbed by the sound absorbing layer 105 of second partition 107 surface attachment, unabsorbed noise sound wave is reflexed to housing 108 inwalls by second partition 107, by sound absorbing layer 105, the first acoustical lining 106, the processing of the second acoustical lining 107 weakens by lower return air inlet 101 being transmitted to indoor noise.
The above is preferred embodiment of the present invention only, is not for restriction protection scope of the present invention.Within the spirit and principles in the present invention all, any modification of doing, be equal to and replace and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. an air duct type air conditioning indoor machine is characterized in that, comprising: housing, cross flow fan, heat exchanger, sound absorbing layer, the first acoustical lining, the second acoustical lining; Wherein,
Cross flow fan be used for the indoor wind of part is sucked by the lower return air inlet of offering on the housing, and the indoor wind that will suck is delivered to heat exchanger;
Heat exchanger after being used for carrying out heat exchange by the indoor wind that cross flow fan is carried, is sent into indoor by the air outlet of offering on the housing;
Sound absorbing layer is attached to the surface of the first acoustical lining, the second acoustical lining and inner walls, is used for absorbing the partial noise that the cross flow fan operation produces;
The first acoustical lining after the partial noise for the sound absorbing layer absorption cross flow fan generation of passing through surface attachment, reflexes to inner walls with unabsorbed noise;
The second acoustical lining after the partial noise for the sound absorbing layer absorption cross flow fan generation of passing through surface attachment, reflexes to inner walls with unabsorbed noise.
2. air duct type air conditioning indoor machine according to claim 1 is characterized in that,
Described cross flow fan, described heat exchanger, described sound absorbing layer, described the first acoustical lining and described the second acoustical lining are built in the described housing, form the air channel between described air outlet and the described lower return air inlet.
3. air duct type air conditioning indoor machine according to claim 2 is characterized in that, described housing further comprises: header board, rear plate, top board, base plate,
Header board, the front portion of formation housing offers for the described air outlet to indoor air-supply;
Rear plate, the rear portion of formation housing, the surface attachment sound absorbing layer of described rear plate inwall;
Top board forms the top of housing, at the surface attachment sound absorbing layer of the described top board inwall that is positioned at the cross flow fan right side, and being positioned at next time the described top board inwall of upper left side, air port arranges described the first acoustical lining;
Base plate, the bottom of formation housing offers described lower return air inlet, and at the surface attachment sound absorbing layer of the described plate inner wall that is positioned at the cross flow fan right side, and the described plate inner wall in return air inlet left side arranges described the second acoustical lining under the next-door neighbour.
4. air duct type air conditioning indoor machine according to claim 2 is characterized in that,
Described cross flow fan is arranged in the left air path of described lower return air inlet top, being positioned at described cross flow fan left air path, described heat exchanger is set.
5. according to claim 1 to 4 each described air duct type air conditioning indoor machines, it is characterized in that, described the first acoustical lining is inclined at described top board inwall.
6. air duct type air conditioning indoor machine according to claim 5 is characterized in that, described the second acoustical lining is inclined at described plate inner wall.
7. air duct type air conditioning indoor machine according to claim 6 is characterized in that, the angle that described the first acoustical lining and described top board inwall form is less than the angle of described the second acoustical lining and the formation of described plate inner wall.
8. air duct type air conditioning indoor machine according to claim 7 is characterized in that, the angle that described the first acoustical lining and described top board inwall form is 140 degree, and the angle that described the second acoustical lining and described plate inner wall form is in 150 to 160 degree scopes.
9. according to claim 3 or 4 described air duct type air conditioning indoor machines, it is characterized in that, described the first acoustical lining is not less than 50mm along the distance of placement direction and described cross flow fan, and the vertical range of described rear plate and described cross flow fan is not less than 200mm.
10. according to claim 3 or 4 described air duct type air conditioning indoor machines, it is characterized in that, the ratio of the width of described lower return air inlet and the height of described rear plate is greater than 0.55.
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| CN201310251415.1A CN103322619B (en) | 2013-06-21 | 2013-06-21 | Air duct type air conditioning indoor machine |
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| CN201310251415.1A CN103322619B (en) | 2013-06-21 | 2013-06-21 | Air duct type air conditioning indoor machine |
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| CN103322619A true CN103322619A (en) | 2013-09-25 |
| CN103322619B CN103322619B (en) | 2016-01-13 |
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Cited By (8)
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| CN104566626A (en) * | 2013-10-12 | 2015-04-29 | 珠海格力电器股份有限公司 | Duct type air conditioner |
| CN105588192A (en) * | 2015-06-09 | 2016-05-18 | 青岛海信日立空调***有限公司 | Embedded air conditioner indoor unit |
| CN106968987A (en) * | 2017-04-12 | 2017-07-21 | 深圳市上羽科技有限公司 | A kind of special cross flow fan for radiating and noise being reduced of air-conditioning |
| CN107101353A (en) * | 2017-05-27 | 2017-08-29 | 远大洁净空气科技有限公司 | A kind of new blower fan of low noise |
| CN108132701A (en) * | 2018-01-26 | 2018-06-08 | 郑州云海信息技术有限公司 | It is a kind of that there is the heat dissipation wind channel of sqouynd absorption lowering noise |
| CN109386910A (en) * | 2018-11-26 | 2019-02-26 | 科希曼电器有限公司 | A kind of air source heat pump outdoor heat exchange device of low noise |
| CN109720172A (en) * | 2017-10-27 | 2019-05-07 | 郑州宇通客车股份有限公司 | Air conditioning air outlet denoising structure |
| CN110779094A (en) * | 2019-11-01 | 2020-02-11 | 珠海格力电器股份有限公司 | Air conditioner with rotatable filtering mechanism |
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| CN109386910A (en) * | 2018-11-26 | 2019-02-26 | 科希曼电器有限公司 | A kind of air source heat pump outdoor heat exchange device of low noise |
| CN109386910B (en) * | 2018-11-26 | 2023-08-11 | 科希曼电器有限公司 | Low-noise outdoor heat exchange device of air source heat pump |
| CN110779094A (en) * | 2019-11-01 | 2020-02-11 | 珠海格力电器股份有限公司 | Air conditioner with rotatable filtering mechanism |
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| CN103322619B (en) | 2016-01-13 |
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