CN106438405A - Coil pipe fan structure - Google Patents
Coil pipe fan structure Download PDFInfo
- Publication number
- CN106438405A CN106438405A CN201610842173.7A CN201610842173A CN106438405A CN 106438405 A CN106438405 A CN 106438405A CN 201610842173 A CN201610842173 A CN 201610842173A CN 106438405 A CN106438405 A CN 106438405A
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- Prior art keywords
- plate
- air
- spiral case
- air outlet
- static pressure
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/26—Rotors specially for elastic fluids
- F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
- F04D29/281—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
- F04D29/4226—Fan casings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/663—Sound attenuation
- F04D29/664—Sound attenuation by means of sound absorbing material
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a coil pipe fan structure which comprises an air blower, a fan box and a heat exchanger. The air blower comprises a volute, an air wheel and a motor, the air wheel is mounted in a first cavity of the volute, and the volute is provided with a first air inlet and a first air outlet. An output shaft of the motor stretches into the first cavity to be connected with the air wheel in a mounted manner, the fan box is provided with a second cavity, a second air inlet is formed in one side of the fan box, and a second air outlet is formed in the other side of the fan box. The heat exchanger is mounted in the second cavity and located between the second air inlet and the second air outlet, a volute tongue part of the first air outlet of the volute is connected with an inclined plate, the higher end of the inclined plate is connected with a volute tongue of the volute air outlet, and the lower end of the inclined plate obliquely extends downwards in the direction close to the heat exchanger. A static pressure reset device is arranged on the first air outlet of the volute, on the basis of the static pressure reset device, volute parameter setting meets the following condition that 1.65>=2*b2/D2>=1.45, the operating efficiency of the motor and the operating efficiency of the fan can be effectively improved, and noise of the fan can be reduced.
Description
Technical field：
The present invention relates to a kind of coiler fan structure.
Background technology：
Existing coiler fan structure as shown in Figure 1, Figure 2, Figure 3 shows, including air blast 100, fan box 200 and heat exchanger
300, described air blast 100 includes spiral case 101, wind wheel 102 and motor 103, and wind wheel 102 is arranged on the first sky of spiral case 101
Inside chamber 104, spiral case 101 is provided with the first air inlet 105 and the first air outlet 106, the first air inlet 105 and the first air outlet
106 are connected with the first cavity 104, and the output shaft of motor 103 is stretched into be connected with wind wheel 102 inside the first cavity 104 and installs,
Fan box 200 is provided with the second cavity 201, and fan box 200 side arranges the second air inlet 202, and fan box 200 is another
Side arranges the second air outlet 203, and heat exchanger 300 is arranged on the second cavity 201 the inside and goes out positioned at the second air inlet 202 and second
Between air port 203.
Because the parameter logistic design between spiral case 101 and wind wheel 102 is unreasonable, the efficiency of impact blower fan and generation are made an uproar
Sound, reduces motor operation efficiency.
Content of the invention：
It is an object of the invention to provide a kind of coiler fan structure, it can effectively improve motor operation efficiency and blower fan
Operational efficiency is moreover it is possible to reduce fan noise.
The purpose of the present invention is achieved by following technical proposals.
A kind of coiler fan structure, including air blast, fan box and heat exchanger, described air blast includes spiral case, wind
Wheel and motor, wind wheel is arranged on inside the first cavity of spiral case, and spiral case is provided with the first air inlet and the first air outlet, motor
Output shaft is stretched into be connected with wind wheel inside the first cavity and installs, and fan box is provided with the second cavity, fan box side
Second air inlet is set, and fan box opposite side arranges the second air outlet, heat exchanger is arranged on inside the second cavity and is located at the
Between two air inlets and the second air outlet, the snail tongue portion of the first air outlet of spiral case connects a swash plate, and the high-end and spiral case of swash plate goes out
The snail tongue in air port connects, and the low side of described swash plate is close to heat exchanger orientation and extends obliquely downward, on the first air outlet of spiral case
It is provided with static pressure return mechanism, on the basis of static pressure return mechanism, spiral case parameter setting meets following condition：1.65 >=2*b2/
D2 >=1.45, b2 is wind wheel effective width；D2 is wind wheel external diameter.
The effective width of wind wheel described above and the width ratio of spiral case：0.98 >=2*b2/B2 >=0.845, B2 is snail
Shell width.
The arc radius of the first air inlet of spiral case described above and wind wheel external diameter ratio：0 ＜ r/D2≤0.069, r is
The arc radius of the first air inlet.
Static pressure return mechanism described above be the first air outlet of spiral case both sides be respectively mounted one static pressure reply plate.
The bottom that static pressure described above replys plate is connected with the both sides of swash plate, and static pressure replys the stage casing that plate extends to swash plate
Position, and static pressure replys plate and swash plate extend in the second cavity.
It is two vertical plates that static pressure described above replys plate, and the second air inlet is located at the top of fan box side, second
The top of air outlet position fan box opposite side.
Fan box described above includes top board, base plate, back plate and side plate and is surrounded, and described base plate includes lower-left face
Plate and the guide plate being connected with lower-left panel, guide plate tilts upward setting, high-end second air outlet that is connected to of guide plate
Bottom, wherein top board, lower-left panel, back plate and side plate surround rectangle structure, and the second described air inlet is arranged on rear top of the plate
Portion.
Heat exchanger described above is in vertically-mounted or tilts to install, and heat exchanger upper and lower ends are connected with top board, base plate.
Lower-left panel described above is be arranged in parallel with top board, and heat exchanger is in vertically or to tilt to install, and heat exchanger is upper and lower
Two ends are connected with top board, base plate.
Air blast described above includes two spiral cases, two wind wheels and 1 motor, and described fan box side is arranged
2 the second air inlets, two spiral cases are located at the both sides of motor respectively, and wind wheel is placed in inside spiral case, and motor has two axle stretch end to divide
Not Lian Jie both sides wind wheel, the first air outlet of two spiral cases arranges 2 the second air inlets with fan box side respectively and is connected.
The present invention compared with prior art, has the effect that：
1) it is provided with static pressure return mechanism on the first air outlet of spiral case, on the basis of static pressure return mechanism, spiral case (11)
Parameter setting meets following condition：1.65 >=2*b2/D2 >=1.45, b2 is wind wheel (12) effective width；D2 is for wind wheel (12) outward
Footpath, effectively improves motor operation efficiency and the operation effect of blower fan；
2) width ratio of the effective width of wind wheel and spiral case：0.98 >=2*b2/B2 >=0.845, B2 is Casing width,
Effectively improve motor operation efficiency and the operational efficiency of blower fan further；
3) arc radius of the first air inlet of spiral case and wind wheel external diameter ratio：0 ＜ r/D2≤0.069, r is the first air intake
The arc radius of mouth, effectively improve motor operation efficiency and the operational efficiency of blower fan；
4) described static pressure return mechanism be the first air outlet of spiral case both sides be respectively mounted one static pressure reply plate, described
The bottom that static pressure replys plate is connected with the both sides of swash plate, and static pressure replys the middle section position that plate extends to swash plate, and static pressure is replied
Plate and swash plate extend in the second cavity, and it is sound-absorbing material manufacture that static pressure replys plate, can effective noise-decreasing.
Brief description：
Fig. 1 is the exploded view of existing coiler fan structure；
Fig. 2 is the top view of existing coiler fan structure；
Fig. 3 is the sectional view of the A-A of Fig. 2；
Fig. 4 is the stereogram of the present invention；
Fig. 5 is an angle decomposition figure of the present invention；
Fig. 6 is another angle decomposition figure of the present invention；
Fig. 7 is the top view of the present invention；
Fig. 8 is the B-B sectional view of Fig. 7；
Fig. 9 is the front view of the spiral case of the present invention；
Figure 10 is the C-C sectional view of Fig. 9；
Figure 11 is the experiment contrast figure of the present invention.
Specific embodiment：
Below by specific embodiment and combine accompanying drawing the present invention is described in further detail.
As shown in Fig. 4 to Figure 10, the present invention is a kind of coiler fan structure, including air blast 1, fan box 2 and heat exchange
Device 3, described air blast 1 includes spiral case 11, wind wheel 12 and motor 13, and wind wheel 12 is arranged in the first cavity 111 of spiral case 11
Face, spiral case 11 is provided with the first air inlet 112 and the first air outlet 113, and the output shaft 131 of motor 13 stretches into the first cavity 111
The inside is connected with wind wheel 12 and installs, and fan box 2 is provided with the second cavity 21, fan box 21 side setting the second air intake
Mouth 22, fan box 2 opposite side arranges the second air outlet 22, and heat exchanger 3 is arranged on the second cavity 21 the inside and enters positioned at second
Between air port 22 and the second air outlet 23, the snail tongue 110 of the first air outlet 113 of spiral case 11 connects a swash plate 4, the height of swash plate 4
End is connected with the snail tongue 110 of spiral case 11 air outlet, and the low side of described swash plate 4 is close to heat exchanger 3 direction and extends obliquely downward, snail
It is provided with static pressure return mechanism on first air outlet of shell 11.
Described static pressure return mechanism be the first air outlet 113 of spiral case 11 both sides be respectively mounted one static pressure reply plate 5.
The bottom that described static pressure replys plate 5 is connected with the both sides of swash plate 4, and static pressure replys the middle section that plate 5 extends to swash plate 4
Put, and static pressure replys plate 5 and swash plate 4 extend in the second cavity 21.
It is two vertical plates that described static pressure replys plate 4, and the second air inlet 22 is located at the top of fan box 2 side, and second goes out
The top of 23 fan box 2 opposite sides in air port.
Described fan box 2 includes top board 24, base plate, back plate 27 and side plate 28 and is surrounded, and described base plate includes a left side
Lower panel 25 and the guide plate 26 being connected with lower-left panel 25, guide plate 26 tilts upward setting, the high-end connection of guide plate 26
To the bottom of the second air outlet 23, wherein top board 24, lower-left panel 25, back plate 27 and side plate 28 surrounds rectangle structure, described
The second air inlet 23 be arranged on back plate 27 top.
Heat exchanger 3 is in vertically-mounted or tilts to install, and heat exchanger 3 upper and lower ends are connected with top board 24, base plate.
Lower-left panel 25 is be arranged in parallel with top board 24, and heat exchanger 3 is in vertically or to tilt to install, heat exchanger 3 upper and lower ends
It is connected with top board 24, lower-left panel 25.
Described air blast 1 includes 11, two wind wheels 12 of two spiral cases and 1 motor 13, described fan box 2 side
2 the second air inlets 22 of setting, two spiral cases 11 are located at the both sides of motor 13 respectively, and wind wheel 12 is placed in inside spiral case 11, motor
13 have two axle stretch end to connect both sides wind wheel 12 respectively, the first air outlet 113 of two spiral cases 11 respectively with fan box 2 side
2 the second air inlets 22 of setting are connected.
As described in Figure 11, on the basis of static pressure return mechanism, spiral case 11 parameter setting meets following condition：1.65 >=2*
B2/D2 >=1.45, b2 is wind wheel 12 effective width；D2 is wind wheel 12 external diameter.The effective width of described wind wheel 12 and spiral case 11
Width ratio：0.98 >=2*b2/B2 >=0.845, B2 is spiral case 11 width.The circular arc of the first air inlet 112 of described spiral case 11
Radius and wind wheel 12 external diameter ratio：0 ＜ r/D2≤0.069, r is the arc radius of the first air inlet 112.According to above-mentioned data warp
Experimental test：Carry out experimental verification under the objective condition of table 1 setting：
Experiment parameter in table 2 is chosen as：2b2/D2=1.2625,2b2/B2=0.796, r/D2=0.075；Through reality
Test, obtain the corresponding efficiency value in the case of different air quantity, and described point fits to curve A1 in fig. 11；
Experiment parameter in table 3 is chosen as：2b2/D2=1.4296,2b2/B2=0.796, r/D2=0.1096；Through
Experiment, obtains the corresponding efficiency value in the case of different air quantity, and described point fits to curve A2 in fig. 11；
Experiment parameter in table 4 is chosen as：2b2/D2=1.43,2b2/B2=0.832, r/D2=0.163；Through reality
Test, obtain the corresponding efficiency value in the case of different air quantity, and described point fits to curve A3 in fig. 11；
Experiment parameter in table 5 selects：2b2/D2=1.45,2b2/B2=0.845, r/D2=0.069；Through experiment,
Obtain the corresponding efficiency value in the case of different air quantity, and described point fits to curve A4 in fig. 11；
Experiment parameter in table 6 selects：2b2/D2=1.45,2b2/B2=0.874, r/D2=0.055；Through experiment,
Obtain the corresponding efficiency value in the case of different air quantity, and described point fits to curve A5 in fig. 11；
Experiment parameter in table 7 selects：2b2/D2=1.48,2b2/B2=0.894, r/D2=0.047；Through experiment,
Obtain the corresponding efficiency value in the case of different air quantity；
Experiment parameter in table 8 selects：2b2/D2=1.65,2b2/B2=0.98, r/D2=0.03；Through experiment, obtain
Corresponding efficiency value in the case of different air quantity；
Figure 11 curve map being described by wherein 6 groups above-mentioned experimental datas, describes curve A1, curve A2, curve respectively
A3, curve A4, curve A5, can be seen that A4 curve by the curve map of Figure 11 and A5 curve curve meet spiral case 11 parameter and sets
Put condition：1.65 >=2*b2/D2 >=1.45,0.98 >=2*b2/B2 >=0.845,0 ＜ r/D2≤0.069, in discharge quantity of fan be
In the case of 0-10 unit interval, efficiency is higher, and curve A1, curve A2, curve A3 are unsatisfactory for above-mentioned condition, in output wind
It is relatively low for measuring as efficiency in the case of 0-10 unit interval.In addition, being joined with table 6 experiment according to the experiment parameter of table 7 and table 8
Number is compared, and table 7 and table 8 are in hgher efficiency in the case of discharge quantity of fan is for 0-10 unit interval, when defeated in actual Fan Product
The in most cases interval operation between 0-10 unit of the scope of air output, the area therefore between 0-10 unit
Between select peak efficiency operational factor be we invention core element.
Table 1
Table 2
Table 3
Table 4
Table 5
Table 6
Table 7
Table 8
Above example is the better embodiment of the present invention, but embodiments of the present invention not limited to this, other are any
Without departing from Spirit Essence and the change made under principle, modification, the replacement of the present invention, combine, simplify, being equivalent displacement side
Formula, is included within protection scope of the present invention.
Claims (10)
1. a kind of coiler fan structure, including air blast (1), fan box (2) and heat exchanger (3), described air blast (1) wraps
Include spiral case (11), wind wheel (12) and motor (13), wind wheel (12) is arranged on inside first cavity (111) of spiral case (11), spiral case
(11) it is provided with the first air inlet (112) and the first air outlet (113), the output shaft (131) of motor (13) stretches into the first cavity
(111) it is connected with wind wheel (12) inside and installs, fan box (2) is provided with the second cavity (21), fan box (21)
Side arranges the second air inlet (22), and fan box (2) opposite side arranges the second air outlet (22), and heat exchanger (3) is arranged on second
Inside cavity (21) and be located between the second air inlet (22) and the second air outlet (23) it is characterised in that：The of spiral case (11)
Snail tongue (110) portion of one air outlet (113) connects a swash plate (4), the snail tongue of high-end and spiral case (11) air outlet of swash plate (4)
(110) connect, the low side of described swash plate (4) is close to heat exchanger (3) direction and extends obliquely downward, the first air-out of spiral case (11)
It is provided with static pressure return mechanism, on the basis of static pressure return mechanism, spiral case (11) parameter setting meets following condition on mouthful：1.65
>=2*b2/D2 >=1.45, b2 is wind wheel (12) effective width；D2 is wind wheel (12) external diameter.
2. a kind of coiler fan structure according to claim 1 it is characterised in that：The effective width of described wind wheel (12) with
The width ratio of spiral case (11)：0.98 >=2*b2/B2 >=0.845, B2 is spiral case (11) width.
3. a kind of coiler fan structure according to claim 2 it is characterised in that：First air inlet of described spiral case (11)
(112) arc radius and wind wheel (12) external diameter ratio：0 ＜ r/D2≤0.069, r is the circular arc half of the first air inlet (112)
Footpath.
4. a kind of coiler fan structure according to claim 1 or 2 or 3 it is characterised in that：Described static pressure return mechanism is
The both sides of first air outlet (113) of spiral case (11) are respectively mounted a static pressure and reply plate (5).
5. a kind of coiler fan structure according to claim 4 it is characterised in that：Described static pressure replys the bottom of plate (5)
Connect with the both sides of swash plate (4), static pressure is replied plate (5) and extended to the middle section position of swash plate (4), and static pressure reply plate (5) and
It is inner that swash plate (4) extend into the second cavity (21).
6. a kind of coiler fan structure according to claim 5 it is characterised in that：It is vertical that described static pressure replys plate (5)
Flat board, the second air inlet (22) is located at the top of fan box (2) side, and it is another that the second air outlet (23) is located at fan box (2)
The top of side.
7. a kind of coiler fan structure according to claim 4 it is characterised in that：Described fan box (2) includes top
Plate (24), base plate, back plate (27) and side plate (28) are surrounded, described base plate include lower-left panel (25) and with lower-left panel
(25) guide plate (26) being connected, guide plate (26) tilts upward setting, and the high-end of guide plate (26) is connected to the second air outlet
(23) bottom, wherein top board (24), lower-left panel (25), back plate (27) and side plate (28) surround rectangle structure, described
Second air inlet (23) is arranged on back plate (27) top.
8. according to a kind of coiler fan structure described in claim 4 it is characterised in that：Heat exchanger (3) is in vertically-mounted or inclines
Tiltedly install, heat exchanger (3) upper and lower ends are connected with top board (24), base plate.
9. a kind of coiler fan structure according to claim 8 it is characterised in that：Base plate is be arranged in parallel with top board (24),
Heat exchanger (3) is in vertically or to tilt to install, and heat exchanger (3) upper and lower ends are connected with top board (24), base plate.
10. a kind of coiler fan structure according to claim 4 it is characterised in that：Described air blast (1) includes two
Spiral case (11), two wind wheels (12) and 1 motor (13), described fan box (2) side arranges 2 the second air inlets
(22), two spiral cases (11) are located at the both sides of motor (13) respectively, and wind wheel (12) is placed in inside spiral case (11), and motor (13) has two
Individual axle stretch end connects both sides wind wheel (12) respectively, first air outlet (113) of two spiral cases (11) respectively with fan box (2)
Side arranges 2 the second air inlets (22) and is connected.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610842173.7A CN106438405B (en) | 2016-09-22 | 2016-09-22 | A kind of coiler fan structure |
| PCT/CN2017/077699 WO2018054027A1 (en) | 2016-09-22 | 2017-03-22 | Coil draught fan structure |
| US15/866,442 US10865798B2 (en) | 2016-05-30 | 2018-01-09 | Fan coil unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610842173.7A CN106438405B (en) | 2016-09-22 | 2016-09-22 | A kind of coiler fan structure |
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| Publication Number | Publication Date |
|---|---|
| CN106438405A true CN106438405A (en) | 2017-02-22 |
| CN106438405B CN106438405B (en) | 2019-04-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610842173.7A Active CN106438405B (en) | 2016-05-30 | 2016-09-22 | A kind of coiler fan structure |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106870458A (en) * | 2017-03-01 | 2017-06-20 | 重庆市耕爵环保科技有限公司 | The assembling guiding subassembly of air cleaning facility |
| CN107420996A (en) * | 2017-09-07 | 2017-12-01 | 中山大洋电机股份有限公司 | Machine in a kind of new and effective HVAC |
| CN107504568A (en) * | 2017-08-29 | 2017-12-22 | 奥普家居股份有限公司 | Air conditioner used in kitchen |
| CN107605802A (en) * | 2017-09-04 | 2018-01-19 | 广东顺威精密塑料股份有限公司 | The spiral case of coiler |
| WO2018054027A1 (en) * | 2016-09-22 | 2018-03-29 | 中山大洋电机股份有限公司 | Coil draught fan structure |
| CN109442583A (en) * | 2018-10-25 | 2019-03-08 | Tcl空调器(中山)有限公司 | A kind of window air conditioner |
| CN109539526A (en) * | 2018-11-19 | 2019-03-29 | 珠海格力电器股份有限公司 | Air conditioner and its control method |
| US10865798B2 (en) | 2016-05-30 | 2020-12-15 | Zhongshan Broad-Ocean Motor Co., Ltd. | Fan coil unit |
| CN113074457A (en) * | 2021-04-16 | 2021-07-06 | 瑞美(中国)热水器有限公司 | Heat pump type water heater |
| CN113137400A (en) * | 2020-01-19 | 2021-07-20 | 广东美的环境电器制造有限公司 | Bladeless air supply device |
| CN113187749A (en) * | 2021-05-31 | 2021-07-30 | 佛山市南海九洲普惠风机有限公司 | High-efficiency air conditioner fan |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10865798B2 (en) | 2016-05-30 | 2020-12-15 | Zhongshan Broad-Ocean Motor Co., Ltd. | Fan coil unit |
| WO2018054027A1 (en) * | 2016-09-22 | 2018-03-29 | 中山大洋电机股份有限公司 | Coil draught fan structure |
| CN106870458A (en) * | 2017-03-01 | 2017-06-20 | 重庆市耕爵环保科技有限公司 | The assembling guiding subassembly of air cleaning facility |
| CN106870458B (en) * | 2017-03-01 | 2019-11-19 | 重庆耕爵科技有限公司 | The assembling guiding subassembly of air cleaning facility |
| CN107504568A (en) * | 2017-08-29 | 2017-12-22 | 奥普家居股份有限公司 | Air conditioner used in kitchen |
| CN107605802A (en) * | 2017-09-04 | 2018-01-19 | 广东顺威精密塑料股份有限公司 | The spiral case of coiler |
| CN107420996A (en) * | 2017-09-07 | 2017-12-01 | 中山大洋电机股份有限公司 | Machine in a kind of new and effective HVAC |
| CN109442583A (en) * | 2018-10-25 | 2019-03-08 | Tcl空调器(中山)有限公司 | A kind of window air conditioner |
| CN109539526A (en) * | 2018-11-19 | 2019-03-29 | 珠海格力电器股份有限公司 | Air conditioner and its control method |
| CN109539526B (en) * | 2018-11-19 | 2023-09-08 | 珠海格力电器股份有限公司 | Air conditioner and control method thereof |
| CN113137400A (en) * | 2020-01-19 | 2021-07-20 | 广东美的环境电器制造有限公司 | Bladeless air supply device |
| CN113074457A (en) * | 2021-04-16 | 2021-07-06 | 瑞美(中国)热水器有限公司 | Heat pump type water heater |
| CN113187749A (en) * | 2021-05-31 | 2021-07-30 | 佛山市南海九洲普惠风机有限公司 | High-efficiency air conditioner fan |
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