CN111121169A - Fan motor heat radiation structure of air conditioner indoor unit - Google Patents
Fan motor heat radiation structure of air conditioner indoor unit Download PDFInfo
- Publication number
- CN111121169A CN111121169A CN201911293536.6A CN201911293536A CN111121169A CN 111121169 A CN111121169 A CN 111121169A CN 201911293536 A CN201911293536 A CN 201911293536A CN 111121169 A CN111121169 A CN 111121169A
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- China
- Prior art keywords
- driving motor
- fan blade
- air conditioner
- centrifugal fan
- blade
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0007—Indoor units, e.g. fan coil units
- F24F1/0018—Indoor units, e.g. fan coil units characterised by fans
- F24F1/0025—Cross-flow or tangential fans
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
- H02K9/04—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
- H02K9/06—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium with fans or impellers driven by the machine shaft
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a fan motor heat dissipation structure of an air conditioner indoor unit, which comprises a through-flow blade for pushing air, a driving motor for providing power for the rotation of the through-flow blade and a centrifugal fan blade for dissipating heat of the driving motor, wherein the centrifugal fan blade is arranged between the through-flow blade and the driving motor, and an air suction end faces towards the driving motor; the cross-flow blade is fixedly connected and isolated with the centrifugal fan blade, and the rotation center of the cross-flow blade is collinear with that of the centrifugal fan blade; and an output shaft of the driving motor is coaxially connected to the air suction end of the centrifugal fan blade. This fan motor heat radiation structure can dispel the heat to the motor when the motor carries out rotary drive, reduces the temperature rise of motor effectively, obtains better radiating effect.
Description
Technical Field
The invention relates to an air conditioner indoor unit, in particular to a fan motor heat dissipation structure of the air conditioner indoor unit.
Background
Among the current air conditioner internal unit, the fan of air supply adopts cross-flow fan mostly, and driving motor sets up the one end at the cross-flow fan blade coaxially, and in long-time use, driving motor can produce a large amount of heats, and cross-flow fan sets up the inside at the internal unit, is difficult to distribute away the heat fast conveniently, so can lead to driving motor's driveability to descend for a long time, reduction in service life.
In order to dispel the heat to the driving motor of air conditioner indoor unit, some technologies that can dispel the heat are proposed to the fan motor of air conditioner indoor unit among the prior art, for example, the utility model discloses an air conditioner indoor unit that the grant bulletin number is CN 209054655U, this air conditioner indoor unit mainly install on the base and be fixed with motor gland, motor, support group, the motor gland with be formed with the cavity that holds the motor between the base, support group is used for fixing the afterbody of motor, set up on the support group and supply the interior heat of cavity to scatter into external a plurality of louvres, can distribute away the heat of motor afterbody, let whole motor heat dissipation even. However, tests and practical use find that when the load of the motor is too large, the temperature rise of the motor still exceeds the standard control range, a good heat dissipation effect is difficult to obtain, peculiar smell is easy to generate, and the service life is easy to reduce.
Disclosure of Invention
The invention aims to overcome the existing problems and provides a fan motor heat dissipation structure of an air conditioner indoor unit, which can dissipate heat of a motor while the motor is driven to rotate, so that the temperature rise of the motor is effectively reduced, and a better heat dissipation effect is obtained.
The purpose of the invention is realized by the following technical scheme:
a fan motor heat radiation structure of an air conditioner indoor unit comprises a through-flow blade for pushing air, a driving motor for providing power for the rotation of the through-flow blade and a centrifugal fan blade for radiating heat of the driving motor, wherein the centrifugal fan blade is arranged between the through-flow blade and the driving motor, and an air suction end faces towards the driving motor; the cross-flow blade is fixedly connected and isolated with the centrifugal fan blade, and the rotation center of the cross-flow blade is collinear with that of the centrifugal fan blade; and an output shaft of the driving motor is coaxially connected to the air suction end of the centrifugal fan blade.
The working principle of the fan motor heat dissipation structure is as follows:
when the centrifugal fan blade is in work, the driving motor drives the centrifugal fan blade to rotate, and the centrifugal fan blade is fixedly connected with the through-flow blade, so that the through-flow blade synchronously rotates along with the centrifugal fan blade. In the rotating process, the cross-flow fan blade conveys cold air or hot air generated by the air conditioner external unit and is used for adjusting the indoor temperature; and the inside of the centrifugal fan blade forms negative pressure, thus outside air is sucked from the air suction end and blown out from the circumferential surface of the centrifugal fan blade, in the process, the air suction end of the centrifugal fan blade faces the driving motor, so that the air around the driving motor can be sucked into the inside of the centrifugal fan blade, continuous heat dissipation air flow is formed and continuously blown to the driving motor, the heat of the driving motor is taken away, the effect of accelerating heat dissipation is achieved, and the blown air and the air of the cross-flow fan blade are mixed and then blown out together.
According to a preferable scheme of the invention, a support frame is arranged at the air suction end of the centrifugal fan blade, and the center of the support frame is fixedly connected with the driving motor.
Preferably, the support frame is formed by a plurality of support ribs, and the driving motor is connected to the junction of the support ribs. Through the structure, the driving motor can drive the through-flow fan blade and the centrifugal fan blade to rotate, and can generate negative pressure to dissipate heat of the driving motor.
The invention further discloses a mounting cover plate for mounting and fixing the driving motor on the shell of the indoor unit of the air conditioner, and the other end of the cross-flow fan blade is rotatably connected to the shell of the indoor unit of the air conditioner through a rotating shaft. Through the structure, the driving motor and the cross-flow fan blade can be limited in the shell of the air conditioner indoor unit.
Preferably, the mounting cover plate is provided with a sealing skirt extending to the direction of the centrifugal fan blade, and the sealing skirt forms a relatively sealed space in a region where the output shaft of the driving motor is connected with the centrifugal fan blade. Therefore, a relatively closed space is formed among the sealing skirt, the centrifugal fan blade and the mounting cover body, and negative pressure is conveniently formed inside the centrifugal fan blade.
Preferably, the mounting cover plate and the shell of the air conditioner indoor unit are provided with air suction channels, and the air suction channels are positioned between the centrifugal blades and the driving motor; when negative pressure is formed inside the centrifugal fan blade, the negative pressure enters the inside of the centrifugal fan blade through the air suction channel.
Further, the suction channel is provided with two.
Preferably, the mounting cover plate and the casing of the air conditioner internal unit are provided with heat dissipation holes at positions surrounding the driving motor, when negative pressure is formed inside the centrifugal fan blade, airflow around the driving motor can be sucked into the centrifugal fan blade, the part of the airflow firstly enters the mounting area of the driving motor through the heat dissipation holes, the driving motor is cooled by the airflow, and then the airflow carries heat to enter the inside of the centrifugal fan blade from the air suction channel.
Furthermore, the heat dissipation holes are provided with a plurality of heat dissipation holes, so that the heat dissipation of the driving motor can be accelerated.
According to a preferable scheme of the invention, the cross-flow fan blade and the centrifugal fan blade are of an integrated structure, and other structures are not required, so that the optimization of the structure of the air conditioner indoor unit is facilitated.
Compared with the prior art, the invention has the following beneficial effects:
1. the fan motor heat dissipation structure can dissipate heat while the driving motor is driven to rotate, so that the temperature rise of the motor is effectively reduced, and a better heat dissipation effect is obtained.
2. By utilizing the power of the driving motor, pressure difference is formed while the cross-flow fan blade rotates, so that radiating airflow is formed, the heat of the driving motor is taken away, and the effect of accelerating heat radiation is achieved.
3. The centrifugal blade and the through-flow blade are directly arranged together, other structures are not needed, and the optimization of the structure of the air conditioner indoor unit is facilitated.
Drawings
Fig. 1-2 are schematic perspective views illustrating a first embodiment of a heat dissipation structure of a fan motor of an air conditioner indoor unit according to the present invention.
Fig. 3 is a schematic perspective view of a cross-flow blade and a centrifugal fan blade according to the present invention.
Fig. 4 is a schematic perspective view of a housing of the air conditioner indoor unit in fig. 1.
Fig. 5 is a schematic perspective view of a housing and a mounting cover of the air conditioner indoor unit in fig. 1.
Fig. 6 is a perspective view of a second embodiment of the present invention.
Fig. 7 is a perspective view of a third embodiment of the present invention.
Detailed Description
In order to make those skilled in the art understand the technical solutions of the present invention well, the following description of the present invention is provided with reference to the embodiments and the accompanying drawings, but the embodiments of the present invention are not limited thereto.
Example 1
Referring to fig. 1 to 5, the fan motor heat dissipation structure of an air conditioner internal unit in the present embodiment includes a cross-flow blade 1 for pushing air, a driving motor 2 for providing power for rotation of the cross-flow blade 1, and a centrifugal fan blade 3 for dissipating heat of the driving motor 2, wherein the centrifugal fan blade 3 is disposed between the cross-flow blade 1 and the driving motor 2, and an air suction end faces the driving motor 2; the cross-flow blade 1 is fixedly connected and isolated with the centrifugal fan blade 3, and the rotation center of the cross-flow blade is collinear with that of the centrifugal fan blade 3; and an output shaft of the driving motor 2 is coaxially connected to the air suction end of the centrifugal fan blade 3.
Referring to fig. 1-5, a support frame 4 is arranged at the air suction end of the centrifugal fan blade 3, and the center of the support frame 4 is fixedly connected with the driving motor 2. Further, the support frame 4 is formed by a plurality of support ribs, and the driving motor 2 is connected to the junction of the support ribs. Through the structure, the driving motor 2 can drive the cross-flow fan blade and the centrifugal fan blade 3 to rotate, and can generate negative pressure to dissipate heat of the driving motor 2.
Referring to fig. 1-5, the air conditioner further comprises a mounting cover plate 6 for mounting and fixing the driving motor 2 on the casing 5 of the air conditioner internal unit, and the other end of the cross-flow fan blade is rotatably connected to the casing 5 of the air conditioner internal unit through a rotating shaft. Through the structure, the driving motor 2 and the cross-flow fan blade can be limited in the shell 5 of the air conditioner indoor unit.
Further, the installation cover plate 6 is provided with a sealing skirt 7 extending to the direction of the centrifugal fan blade 3, and the sealing skirt 7 forms a relatively sealed space in an area where the output shaft of the driving motor 2 is connected with the centrifugal fan blade 3. Therefore, a relatively closed space is formed among the sealing skirt 7, the centrifugal fan blade 3 and the mounting cover body, and negative pressure is conveniently formed inside the centrifugal fan blade 3.
Referring to fig. 1-5, the mounting cover plate 6 and the casing 5 of the air conditioner internal unit are provided with air suction channels 8, and the air suction channels 8 are positioned between the centrifugal blades and the driving motor 2; when negative pressure is formed inside the centrifugal fan blade 3, the negative pressure enters the centrifugal fan blade 3 through the air suction channel 8.
Further, the suction channels 8 are provided in two.
Referring to fig. 1-5, heat dissipation holes 9 are formed in the positions, surrounding the driving motor 2, of the mounting cover plate 6 and the casing 5 of the air conditioner internal unit, when negative pressure is formed inside the centrifugal fan blade 3, airflow around the driving motor 2 is sucked into the centrifugal fan blade 3, the airflow enters the mounting area of the driving motor 2 through the heat dissipation holes 9, at the moment, the airflow performs air cooling heat dissipation on the driving motor 2, and then the airflow carries heat to enter the inside of the centrifugal fan blade 3 from the air suction channel 8.
Further, the heat dissipation holes 9 are provided in plurality, which is beneficial to accelerating the heat dissipation of the driving motor 2. Specifically, the heat radiation hole 9 is located outside the circumferential side surface of the drive motor 2.
Referring to fig. 1, the cross-flow fan blade and the centrifugal fan blade 3 are of an integrated structure, and other structures are not required, so that the optimization of the structure of the air conditioner indoor unit is facilitated.
Referring to fig. 1 to 5, the working principle of the heat dissipation structure of the fan motor in the embodiment is as follows:
when the centrifugal fan blade is in work, the driving motor 2 drives the centrifugal fan blade 3 to rotate, and the centrifugal fan blade 3 is fixedly connected with the through-flow blade 1, so that the through-flow blade 1 rotates synchronously along with the centrifugal fan blade 3. In the rotating process, the cross-flow fan blade conveys cold air or hot air generated by the air conditioner external unit and is used for adjusting the indoor temperature; and the inside of the centrifugal fan blade 3 forms negative pressure, thus outside air is sucked from the end of induced drafting, blow out from the periphery of the centrifugal fan blade 3, in this process, because the end of induced drafting of the centrifugal fan blade 3 faces the driving motor 2, so can suck the air around the driving motor 2 into the inside of the centrifugal fan blade 3, thus form the continuous heat dissipation wind current, blow to the driving motor 2 continuously and go on, take away the heat of the driving motor 2, play a role in accelerating the heat dissipation, blow out the wind and blow out together after mixing with the wind of the through-flow fan blade blown out.
Example 2
Referring to fig. 6, unlike embodiment 1, the heat radiation holes 9 in this embodiment are located outside the end surface of the drive motor 2.
Example 3
Referring to fig. 7, the heat radiation holes 9 in the present embodiment are all opened outside the end surface and the circumferential surface of the drive motor 2.
The present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents and are included in the scope of the present invention.
Claims (10)
1. A fan motor heat dissipation structure of an air conditioner indoor unit is characterized by comprising a through-flow blade for pushing air, a driving motor for providing power for rotation of the through-flow blade and a centrifugal fan blade for dissipating heat of the driving motor, wherein the centrifugal fan blade is arranged between the through-flow blade and the driving motor, and an air suction end faces towards the driving motor; the cross-flow blade is fixedly connected and isolated with the centrifugal fan blade, and the rotation center of the cross-flow blade is collinear with that of the centrifugal fan blade; and an output shaft of the driving motor is coaxially connected to the air suction end of the centrifugal fan blade.
2. The fan motor heat dissipation structure of an internal unit of an air conditioner as claimed in claim 2, wherein a support frame is provided at a suction end of the centrifugal fan blade, and a center of the support frame is fixedly connected to the driving motor.
3. The fan motor heat dissipation structure of an internal unit of an air conditioner according to claim 3, wherein the support frame is formed by a plurality of support ribs joined together, and the driving motor is connected to the junction of the support ribs.
4. The fan motor heat dissipation structure of an air conditioner indoor unit as claimed in claim 1, further comprising a mounting cover plate for mounting and fixing the driving motor on the casing of the air conditioner indoor unit, wherein the other end of the cross-flow fan blade is rotatably connected to the casing of the air conditioner indoor unit through a rotating shaft.
5. The fan motor heat dissipation structure of an internal unit of an air conditioner as claimed in claim 4, wherein the mounting cover plate is provided with a sealing skirt extending in the direction of the centrifugal fan blade, and the sealing skirt forms a relatively sealed space in a region where the output shaft of the driving motor is connected with the centrifugal fan blade.
6. The fan motor heat dissipation structure of an air conditioner indoor unit as claimed in claim 4, wherein the mounting cover plate and the casing of the air conditioner indoor unit are provided with air suction channels, and the air suction channels are located between the centrifugal blades and the driving motor; when negative pressure is formed inside the centrifugal fan blade, the negative pressure enters the inside of the centrifugal fan blade through the air suction channel.
7. The fan motor heat dissipation structure of an internal unit of an air conditioner according to claim 6, wherein there are two suction passages.
8. The fan motor heat dissipation structure of an air conditioner internal unit according to claim 4, wherein heat dissipation holes are formed in the mounting cover plate and the casing of the air conditioner internal unit at positions surrounding the driving motor, when negative pressure is formed inside the centrifugal fan blade, airflow around the driving motor is sucked into the inside of the centrifugal fan blade, the airflow enters the mounting area of the driving motor through the heat dissipation holes, and the airflow carries heat from the air suction channel to the inside of the centrifugal fan blade.
9. The fan motor heat dissipation structure of an internal unit of an air conditioner according to claim 8, wherein the heat dissipation hole is provided in plurality.
10. The fan motor heat dissipation structure of an internal unit of an air conditioner according to any one of claims 1 to 9, wherein the cross-flow blade and the centrifugal blade are of an integrated structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911293536.6A CN111121169A (en) | 2019-12-16 | 2019-12-16 | Fan motor heat radiation structure of air conditioner indoor unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911293536.6A CN111121169A (en) | 2019-12-16 | 2019-12-16 | Fan motor heat radiation structure of air conditioner indoor unit |
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| Publication Number | Publication Date |
|---|---|
| CN111121169A true CN111121169A (en) | 2020-05-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911293536.6A Pending CN111121169A (en) | 2019-12-16 | 2019-12-16 | Fan motor heat radiation structure of air conditioner indoor unit |
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| Country | Link |
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| CN (1) | CN111121169A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112161327A (en) * | 2020-09-24 | 2021-01-01 | Tcl空调器(中山)有限公司 | Air conditioner and motor heat radiation structure thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1159090A (en) * | 1995-11-27 | 1997-09-10 | 株式会社日立制作所 | Totally-enclosed type motor |
| DE102008033196A1 (en) * | 2007-07-16 | 2009-01-22 | Hamilton Sundstrand Corporation, Windsor Locks | Integrated housing arrangement for a blower and a non-return flow check valve |
| CN104235955A (en) * | 2014-09-11 | 2014-12-24 | 美的集团武汉制冷设备有限公司 | Air conditioner indoor unit and air conditioner |
| CN208046389U (en) * | 2018-01-31 | 2018-11-02 | 东莞洁澳思精密科技股份有限公司 | A kind of series machine structure |
-
2019
- 2019-12-16 CN CN201911293536.6A patent/CN111121169A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1159090A (en) * | 1995-11-27 | 1997-09-10 | 株式会社日立制作所 | Totally-enclosed type motor |
| DE102008033196A1 (en) * | 2007-07-16 | 2009-01-22 | Hamilton Sundstrand Corporation, Windsor Locks | Integrated housing arrangement for a blower and a non-return flow check valve |
| CN104235955A (en) * | 2014-09-11 | 2014-12-24 | 美的集团武汉制冷设备有限公司 | Air conditioner indoor unit and air conditioner |
| CN208046389U (en) * | 2018-01-31 | 2018-11-02 | 东莞洁澳思精密科技股份有限公司 | A kind of series machine structure |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112161327A (en) * | 2020-09-24 | 2021-01-01 | Tcl空调器(中山)有限公司 | Air conditioner and motor heat radiation structure thereof |
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Application publication date: 20200508 |
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