CN203413720U - Air duct type air condition indoor unit - Google Patents
Air duct type air condition indoor unit Download PDFInfo
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- CN203413720U CN203413720U CN201320361942.3U CN201320361942U CN203413720U CN 203413720 U CN203413720 U CN 203413720U CN 201320361942 U CN201320361942 U CN 201320361942U CN 203413720 U CN203413720 U CN 203413720U
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- 238000005192 partition Methods 0.000 claims description 69
- 238000010521 absorption reaction Methods 0.000 claims description 31
- 238000004378 air conditioning Methods 0.000 description 13
- 230000000644 propagated effect Effects 0.000 description 9
- 239000011358 absorbing material Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 230000003434 inspiratory effect Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 241000886569 Cyprogenia stegaria Species 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
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Abstract
The utility model discloses an air duct type air condition indoor unit, which comprises a shell, a cross-flow fan, a heat exchanger, sound absorbing layers, a first sound absorbing clapboard and a second sound absorbing clapboard, wherein the shell further comprises a front plate, a rear plate, a top plate and a bottom plate, the cross-flow fan, the heat exchanger, the sound absorbing layers, the first sound absorbing clapboard and the second sound absorbing clapboard are built in the shell, an air channel is formed between an air supply port and a lower air return port, the cross-flow fan is arranged in the air channel at the left side above the lower air return port, the heat exchanger is arranged in the air channel at the left side of the cross-flow fan, one sound absorbing layer is attached to the surface of the inner wall of the top plate positioned at the right side of the cross-flow fan, the first sound absorbing clapboard is arranged on the inner wall of the top plate positioned at the left upper side of the lower air return port, the other sound absorbing layer is attached to the surface of the inner wall of the bottom plate positioned at the right side of the cross-flow fan, and the second sound absorbing clapboard is arranged on the inner wall of the bottom plate close to the left side of the lower air return port. After the air duct type air condition indoor unit is applied, the noise of an air condition is reduced, pressure loss of air current in the air channel is reduced, and the efficiency of the air condition is improved.
Description
Technical Field
The utility model relates to an air conditioning technology field especially relates to a machine in tuber pipe formula air conditioning.
Background
The air pipe type air conditioner indoor unit can circulate by driving indoor air, so that indoor refrigeration or heating with higher efficiency is realized, and the air pipe type air conditioner indoor unit is mostly installed in places with higher requirements on indoor environment, such as hotels, schools, office buildings and the like. However, since the noise generated by the air duct type air conditioner indoor unit is likely to affect users when the air duct type air conditioner indoor unit is in operation, it is very important to reduce the noise generated by the air duct type air conditioner indoor unit by optimizing and improving equipment in the design of the air duct type air conditioner indoor unit.
The noise of the air duct type air conditioner indoor unit mainly comes from aerodynamic noise of a cross-flow fan, the cross-flow fan consisting of an impeller and a motor driving the impeller to rotate is usually positioned right above a lower return air inlet, when the air duct type air conditioner indoor unit operates in a lower return air mode, the noise is easily transmitted to the indoor through the lower return air inlet, the position of the lower return air inlet is simply deviated from the position right below the cross-flow fan, and no obvious noise reduction effect can be generated.
At present, the design of the air duct type air conditioner indoor unit mainly adopts a mode of increasing a plurality of groups of clapboards in a shell to reduce the noise of the air conditioner, for example, in a noise-proof ventilator of patent CN2336261Y, a mode of forming an S-shaped channel in the fan shell by utilizing a plurality of clapboards in a staggered manner is proposed to achieve the purpose of reducing the noise, but when the airflow passes through the shell provided with the plurality of groups of clapboards, serious airflow pressure loss is easily caused, for the cross flow fan of the air duct type air conditioner indoor unit with weak boosting capacity, the serious airflow pressure loss can influence the performance of the whole air conditioner, so that the air conditioning efficiency is not high.
SUMMERY OF THE UTILITY MODEL
An embodiment of the utility model provides a machine in tuber pipe formula air conditioning reduces air current loss of pressure, promotes air conditioning efficiency in the wind channel.
In order to achieve the above object, an embodiment of the present invention provides an air duct type air conditioner indoor unit, including: the device comprises a shell, a cross flow fan, a heat exchanger, a sound absorption layer, a first sound absorption clapboard and a second sound absorption clapboard; the cross-flow fan is used for sucking partial indoor air through a lower air return opening formed in the shell and conveying the sucked indoor air to the heat exchanger; the heat exchanger is used for exchanging heat of indoor air conveyed by the cross flow fan and then sending the indoor air into a room through an air supply outlet formed in the shell; the sound absorption layer is attached to the surfaces of the first sound absorption partition plate, the second sound absorption partition plate and the inner wall of the shell and is used for absorbing part of noise generated by the operation of the cross flow fan; the first sound absorption partition plate is used for absorbing part of noise generated by the cross flow fan through the sound absorption layer attached to the surface and then reflecting the unabsorbed noise to the inner wall of the shell; and the second sound-absorbing partition plate is used for reflecting unabsorbed noise to the inner wall of the shell after the sound-absorbing layer attached to the surface absorbs part of noise generated by the cross-flow fan.
Preferably, the cross-flow fan, the heat exchanger, the sound absorbing layer, the first sound absorbing partition plate and the second sound absorbing partition plate are arranged in the casing, and an air duct is formed between the air supply opening and the lower air return opening.
Preferably, the housing further comprises: the front plate, the rear plate, the top plate and the bottom plate; the front plate forms the front part of the shell and is provided with the air supply outlet for supplying air to the indoor space; the rear plate forms the rear part of the shell, and the sound absorption layer is attached to the surface of the inner wall of the rear plate; the top plate forms the top of the shell, the sound absorption layer is attached to the surface of the inner wall of the top plate on the right side of the cross flow fan, and the first sound absorption partition plate is arranged on the inner wall of the top plate on the left upper side of the lower air return opening; the bottom plate forms the bottom of the shell, the lower air return opening is formed in the bottom plate, the sound absorbing layer is attached to the surface of the inner wall of the bottom plate on the right side of the cross-flow fan, and the second sound absorbing partition plate is arranged on the inner wall of the bottom plate close to the left side of the lower air return opening.
Preferably, the cross-flow fan is arranged in the left air duct above the lower air return inlet, and the heat exchanger is arranged in the left air duct of the cross-flow fan.
Preferably, the first sound-absorbing partition plate is obliquely arranged on the inner wall of the top plate, and the second sound-absorbing partition plate is obliquely arranged on the inner wall of the bottom plate.
Preferably, an included angle formed by the first sound-absorbing partition plate and the inner wall of the top plate is smaller than an included angle formed by the second sound-absorbing partition plate and the inner wall of the bottom plate.
Preferably, the included angle formed between the first sound-absorbing partition plate and the inner wall of the top plate is 140 degrees, and the included angle formed between the second sound-absorbing partition plate and the inner wall of the bottom plate is 150 to 160 degrees.
Preferably, the first sound absorbing partition plate is not less than 50mm away from the cross-flow fan in the placement direction, and the vertical distance between the rear plate and the cross-flow fan is not less than 200 mm.
Preferably, the ratio of the width of the lower air return opening to the height of the rear plate is greater than 0.55.
By the above, the utility model discloses among the technical scheme, through at the inside sound absorbing material that covers of casing to set up the baffle that covers sound absorbing material at the roof slope, set up another baffle that covers sound absorbing material equally at the bottom plate slope and reduce the air conditioner noise, not only simple structure can also reduce air current loss of pressure, promote air conditioning efficiency in the wind channel.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art further embodiments and drawings can be derived from the embodiments shown in the drawings.
Fig. 1 is a schematic structural view of an air duct type indoor unit of an air conditioner according to an embodiment of the present invention.
Detailed Description
The technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
At present, the mode of arranging a plurality of groups of partition plates in a shell is generally adopted by the air duct type air conditioner indoor unit, the noise generated by a cross-flow fan is reduced, however, when the air duct type air conditioner indoor unit operates in a downward return air mode, the serious pressure loss can be caused when indoor air flow sucked into the shell passes through the multi-stage partition plates, and the performance of the whole air duct type air conditioner indoor unit can be influenced due to the serious pressure loss of the cross-flow fan with not very strong boosting capacity.
The embodiment of the utility model provides an in, provide a machine in tuber pipe formula air conditioning, through covering sound absorbing material in the casing is inside to set up two baffles that cover sound absorbing material equally and reduce the air conditioner noise, not only simple structure can also reduce air current loss of pressure, promotion air conditioning efficiency in the wind channel.
Fig. 1 is a schematic structural view of an air duct type indoor unit of an air conditioner according to an embodiment of the present invention. Referring to fig. 1, comprising: a lower air return opening 101, a cross flow fan 102, a heat exchanger 103, an air supply opening 104, a sound absorbing layer 105, a first sound absorbing partition plate 106, a second sound absorbing partition plate 107, and a casing 108; wherein,
the cross-flow fan 102, the heat exchanger 103, the sound absorbing layer 105, the first sound absorbing partition 106 and the second sound absorbing partition 107 are arranged in a casing 108, the casing 108 is provided with a lower air return opening 101 and an air supply opening 104, and an air duct is formed between the air supply opening 104 and the lower air return opening 101.
And a cross flow fan 102, which is composed of an impeller and a motor for driving the impeller to rotate, for sucking a part of the indoor air through the lower air return opening 101 and delivering the sucked indoor air to the heat exchanger 103.
The embodiment of the utility model provides an in, return air mode operation under the adoption is adopted to the machine in air duct type air conditioning, and after cross-flow fan 102 started, through return air inlet 101 down, the indoor wind of suction to change inspiratory indoor wind velocity of flow and flow direction, increase inspiratory indoor wind pressure, then, carry inspiratory indoor wind to heat exchanger 103.
The heat exchanger 103 exchanges heat with the indoor air blown by the cross flow fan 102, and sends the air into the room through the air outlet 104.
In an embodiment of the invention, the heat exchange comprises cooling or heating in the heat exchanger 103. After cooling or heating, the air is blown into the room through the air blowing port 104.
Indoor air is sucked by the cross flow fan 102, processed by the heat exchanger 103 and then sent into the room to circulate continuously, so as to achieve the effect of reducing or increasing the indoor temperature.
And a sound absorbing layer 105 made of a sound absorbing material attached to the surfaces of the first sound absorbing partition 106, the second sound absorbing partition 107, and the inner wall of the casing 108, for absorbing a part of noise generated by the operation of the cross flow fan 102.
In the embodiment of the present invention, the smooth air flow in the casing 108 is interrupted by the rotating blades in the cross-flow fan 102, and the acceleration and speed turning occur, so that the flow in the inlet area of the impeller deteriorates and generates noise, and the noise sound wave is propagated in the casing 108 along each direction in a radial manner, and when propagated to the sound absorption layer 105, the noise is partially absorbed by the sound absorption layer 105, thereby weakening the noise propagated to the indoor through the lower air return opening 101.
The first sound absorption baffle 106 is used for reflecting unabsorbed noise to the inner wall of the shell 108 after absorbing part of noise generated by the cross flow fan 102 through the sound absorption layer 105 attached to the surface;
and a second sound-absorbing partition 107 for reflecting, after absorbing a part of the noise generated by the crossflow blower 102 by the sound-absorbing layer 105 attached to the surface thereof, the unabsorbed noise to the inner wall of the casing 108.
The housing 108 includes: front plate 108a, back plate 108b, top plate 108c, bottom plate 108 d. A front plate 108a forming the front part of the casing 108 and provided with an air supply port 104 for supplying air indoors; a rear plate 108b forming the rear part of the casing 108 and having a sound absorbing layer 105 attached to the surface of the inner wall thereof; a top plate 108c forming the top of the casing 108, wherein a sound absorbing layer 105 is attached to the surface of the inner wall of the top plate 108c positioned on the right side of the cross flow fan 102, and a first sound absorbing partition plate 106 is arranged on the inner wall of the top plate 108c positioned on the left upper side of the lower air return opening 101; and a bottom plate 108d forming the bottom of the casing 108, wherein a sound absorbing layer 105 is attached to the surface of the inner wall of the bottom plate 108d positioned on the right side of the cross flow fan 102, and a second sound absorbing partition plate 107 is provided on the inner wall of the bottom plate 108d positioned on the left side of the lower return air inlet 101.
Preferably, an air duct formed by a housing 108 is arranged between the lower air return opening 101 and the air supply opening 106, the cross flow fan 102 is arranged in the left air duct above the lower air return opening 101, the cross flow fan 102 is composed of an impeller and a motor driving the impeller to rotate, a heat exchanger 103 for cooling or heating air is arranged in the left air duct of the cross flow fan 102, a first sound absorption partition plate 106 is arranged on the inner wall of a top plate 108c positioned on the left upper side of the lower air return opening 101, the first sound absorption partition plate 106 is arranged in an inclined manner, an obtuse angle formed by the first sound absorption partition plate 106 and the inner wall of the top plate 108c is alpha, and the sound insulation layer 105 is attached to the surface of the inner wall. A second sound absorbing partition plate 107 is provided on the inner wall of the bottom plate 108d on the left side of the lower air return opening 101, the second sound absorbing partition plate 107 is disposed obliquely so that an obtuse angle β with the inner wall of the bottom plate 108d is formed, and the soundproof layer 105 is attached to the surface of the inner wall of the bottom plate 108 d.
Further, an obtuse angle α formed by the first sound-absorbing partition 106 and the inner wall of the top plate 108C, an obtuse angle β formed by the second sound-absorbing partition 107 and the inner wall of the bottom plate 108d, a distance a between the first sound-absorbing partition 106 and the cross-flow fan 102 along the placement direction, a ratio Q between a width C of the lower return air inlet 101 and a height H of the rear plate 108B, and a vertical distance B between the rear plate 108B and the cross-flow fan 102 all affect the noise reduction effect of the air duct type air conditioner indoor unit, the air intake amount of the cross-flow fan 102, and the pressure loss of the air flow in the air duct.
The distance A between the first sound-absorbing partition 106 and the cross-flow fan 102 along the placement direction and the vertical distance B between the rear plate 108B and the cross-flow fan 102 mainly influence the noise reduction effect; the obtuse angle alpha formed by the first sound-absorbing partition 106 and the inner wall of the top plate 108c and the obtuse angle beta formed by the second sound-absorbing partition 107 and the inner wall of the bottom plate 108d influence the pressure loss of the air flow in the air duct; the ratio Q of the width C of the lower return air inlet 101 to the height H of the rear plate 108b influences the intake amount of the cross-flow fan 102.
In practical application, by performing a comparison experiment for adjusting the above parameter values and testing the influence of the parameter values on the noise of the air duct type air conditioner indoor unit, the air intake of the cross-flow fan 102 and the pressure loss of the air flow in the air duct, a specific value of a set of optimal parameters can be obtained to ensure that when the first sound-absorbing partition plate 106 is inclined with the inner wall of the top plate 108c at an angle α and the second sound-absorbing partition plate 107 is inclined with the inner wall of the bottom plate 108d at an angle β, the pressure loss of the air flow in the air duct is small while the first sound-absorbing partition plate 106 and the second sound-absorbing partition plate 107 effectively absorb the noise sound wave. For example, when the ratio of the width C of the lower air return opening 101 to the height H of the rear plate 108B is an optimized Q value, the influence on the intake air amount of the cross-flow fan 102 is small, and when the distance between the first sound absorbing barrier 106 and the cross-flow fan 102 in the placement direction is an optimized a and the vertical distance between the rear plate 108B and the cross-flow fan 102 is an optimized B, the sound absorbing layer 105 can effectively absorb the noise sound wave generated by the cross-flow fan 102.
Preferably, in the embodiment of the present invention, the obtuse angle α formed by the first sound-absorbing partition 106 and the inner wall of the top plate 108C is smaller than the obtuse angle β formed by the second sound-absorbing partition 107 and the inner wall of the bottom plate 108d, and α is about 140 degrees, β is in the range of 150 to 160 degrees, the shortest distance a between the first sound-absorbing partition 106 and the cross-flow fan 102 is not less than 50mm, the perpendicular distance B between the back plate 108B and the cross-flow fan 102 exceeds 200mm, and the ratio Q between the width C of the air return opening 101 and the height H of the back plate 108B is not less than 0.55, with the above arrangement, because the sound-absorbing partitions are only arranged on the upper and lower sides of the inner wall of the casing, the air pressure loss in the air duct of the air duct type air conditioning indoor unit is small, the influence on the intake volume of the cross-flow fan 102 is small, so that the cross-flow fan of the air conditioning indoor unit with no strong pressure, the air conditioning efficiency is effectively improved; meanwhile, the sound absorbing layer is attached to the inner wall of the casing and the sound absorbing partition plate, so that noise generated by the cross flow fan 102 can be effectively reduced.
The utility model discloses machine theory of operation in tuber pipe formula air conditioning: the air conditioner operates in a down-return mode, a motor in the cross-flow fan 102 drives an impeller to rotate, indoor air is sucked from an inlet area of the impeller through a down-return air inlet 101, the flow speed and the flow direction of the sucked indoor air are changed, the pressure of the sucked indoor air is increased, the sucked indoor air is conveyed to a heat exchanger 103 positioned on the left side of the cross-flow fan 102, and the heat exchanger 103 exchanges heat with the indoor air conveyed by the cross-flow fan 102 and then conveys the indoor air into a room through an air supply outlet 104. Meanwhile, noise sound waves generated during the operation of the crossflow blower 102 are radially propagated in the casing 108 in all directions, wherein a noise sound wave portion propagated to the top plate 108c is absorbed by the sound absorbing layer 105 attached to the surface of the inner wall of the top plate 108c, a noise sound wave portion propagated to the rear plate 108b is absorbed by the sound absorbing layer 105 attached to the surface of the inner wall of the rear plate 108b, a noise sound wave portion propagated to the bottom plate 108d is absorbed by the sound absorbing layer 105 attached to the surface of the inner wall of the bottom plate 108d, a noise sound wave portion propagated to the first partition 106 is absorbed by the sound absorbing layer 105 attached to the surface of the first partition 106, unabsorbed noise sound waves are reflected to the inner wall of the casing 108 by the first partition 106, a noise sound wave portion propagated to the second partition 107 is absorbed by the sound absorbing layer 105 attached to the surface of the second partition 107, and unabsorbed noise sound waves are reflected to the inner wall of the casing 108 by the second partition 107, the first sound-absorbing partition 106 and the second sound-absorbing partition 107 are treated to reduce noise transmitted to the room through the lower air return opening 101.
It will be apparent to those skilled in the art that various changes and modifications may be made to the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention also encompasses these modifications and variations.
Claims (10)
1. An air duct type air conditioner indoor unit, comprising: the device comprises a shell, a cross flow fan, a heat exchanger, a sound absorption layer, a first sound absorption clapboard and a second sound absorption clapboard; wherein,
the cross flow fan is used for sucking partial indoor air through a lower air return port formed in the shell and conveying the sucked indoor air to the heat exchanger;
the heat exchanger is used for exchanging heat of indoor air conveyed by the cross-flow fan and then sending the indoor air into the room through an air supply outlet formed in the shell;
the sound absorption layer is attached to the surfaces of the first sound absorption partition plate, the second sound absorption partition plate and the inner wall of the shell and is used for absorbing part of noise generated by the operation of the cross flow fan;
the first sound absorption partition plate is used for reflecting unabsorbed noise to the inner wall of the shell after absorbing part of noise generated by the cross flow fan through the sound absorption layer attached to the surface;
and the second sound-absorbing partition board is used for reflecting the unabsorbed noise to the inner wall of the shell after absorbing part of the noise generated by the cross flow fan through the sound-absorbing layer attached to the surface.
2. The indoor unit of an air duct type air conditioner according to claim 1,
the cross-flow fan, the heat exchanger, the sound absorbing layer, the first sound absorbing partition plate and the second sound absorbing partition plate are arranged in the shell, and an air channel is formed between the air supply opening and the lower air return opening.
3. The indoor unit of an air duct type air conditioner according to claim 2, wherein the casing further comprises: a front plate, a back plate, a top plate and a bottom plate,
a front plate forming the front part of the housing and provided with the air supply outlet for supplying air to the indoor;
the rear plate forms the rear part of the shell, and a sound absorption layer is attached to the surface of the inner wall of the rear plate;
the top plate forms the top of the shell, a sound absorption layer is attached to the surface of the inner wall of the top plate on the right side of the cross flow fan, and the first sound absorption partition plate is arranged on the inner wall of the top plate on the left upper side of the lower air return inlet;
the bottom plate forms the bottom of the shell, the lower air return opening is formed in the bottom of the shell, the sound absorption layer is attached to the surface of the inner wall of the bottom plate on the right side of the cross flow fan, and the second sound absorption partition plate is arranged on the inner wall of the bottom plate close to the left side of the lower air return opening.
4. The indoor unit of an air duct type air conditioner according to claim 2,
the cross-flow fan is arranged in the left air duct above the lower air return inlet, and the heat exchanger is arranged in the left air duct of the cross-flow fan.
5. The indoor unit of an air duct type air conditioner according to any one of claims 1 to 4, wherein the first sound absorbing partition is provided obliquely to an inner wall of the ceiling plate.
6. The indoor unit of an air duct type air conditioner according to claim 5, wherein the second sound-absorbing partition plate is provided obliquely to the inner wall of the bottom plate.
7. The indoor unit of an air duct type air conditioner as claimed in claim 6, wherein an included angle formed between the first sound-absorbing partition plate and the inner wall of the top plate is smaller than an included angle formed between the second sound-absorbing partition plate and the inner wall of the bottom plate.
8. The indoor unit of an air duct type air conditioner as claimed in claim 7, wherein the first sound-absorbing partition plate forms an angle of 140 degrees with the inner wall of the top plate, and the second sound-absorbing partition plate forms an angle of 150 to 160 degrees with the inner wall of the bottom plate.
9. The indoor unit of an air duct type air conditioner according to claim 3 or 4, wherein the first sound absorbing partition is spaced from the cross-flow fan by a distance of not less than 50mm in a placement direction, and the rear plate is spaced from the cross-flow fan by a perpendicular distance of not less than 200 mm.
10. The indoor unit of an air duct type air conditioner as claimed in claim 3 or 4, wherein a ratio of a width of the lower return air inlet to a height of the rear plate is greater than 0.55.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320361942.3U CN203413720U (en) | 2013-06-21 | 2013-06-21 | Air duct type air condition indoor unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320361942.3U CN203413720U (en) | 2013-06-21 | 2013-06-21 | Air duct type air condition indoor unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203413720U true CN203413720U (en) | 2014-01-29 |
Family
ID=49976607
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320361942.3U Expired - Lifetime CN203413720U (en) | 2013-06-21 | 2013-06-21 | Air duct type air condition indoor unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203413720U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103322619A (en) * | 2013-06-21 | 2013-09-25 | 青岛海信日立空调***有限公司 | Indoor unit of duct air conditioner |
| CN107687671A (en) * | 2017-08-25 | 2018-02-13 | 珠海凌达压缩机有限公司 | Indoor set and air-conditioning system |
-
2013
- 2013-06-21 CN CN201320361942.3U patent/CN203413720U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103322619A (en) * | 2013-06-21 | 2013-09-25 | 青岛海信日立空调***有限公司 | Indoor unit of duct air conditioner |
| CN103322619B (en) * | 2013-06-21 | 2016-01-13 | 青岛海信日立空调***有限公司 | Air duct type air conditioning indoor machine |
| CN107687671A (en) * | 2017-08-25 | 2018-02-13 | 珠海凌达压缩机有限公司 | Indoor set and air-conditioning system |
| CN107687671B (en) * | 2017-08-25 | 2023-11-14 | 珠海凌达压缩机有限公司 | Indoor unit and air conditioning system |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140129 Effective date of abandoning: 20160113 |
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| C25 | Abandonment of patent right or utility model to avoid double patenting |