CN216143829U - Fresh air outlet mechanism for air conditioner indoor unit and air conditioner indoor unit - Google Patents
Fresh air outlet mechanism for air conditioner indoor unit and air conditioner indoor unit Download PDFInfo
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- CN216143829U CN216143829U CN202121146363.8U CN202121146363U CN216143829U CN 216143829 U CN216143829 U CN 216143829U CN 202121146363 U CN202121146363 U CN 202121146363U CN 216143829 U CN216143829 U CN 216143829U
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Abstract
The utility model provides a fresh air outlet mechanism for an air conditioner indoor unit and the air conditioner indoor unit, wherein a fresh air port for discharging fresh air flow to the indoor environment where the air conditioner indoor unit is located is formed on the fresh air outlet mechanism; and the fresh air outlet mechanism is also provided with a fresh air baffle which is controlled to be rotationally arranged at the fresh air port so as to open and close the fresh air port. The fresh air opening is opened and closed by the fresh air baffle plate in a controlled rotating mode, so that the air conditioner indoor unit can reduce or avoid the situation that outdoor environment air flows backwards such as indoor environment under the condition that the fresh air mode is closed, the use experience of users is favorably improved, and the air conditioner indoor unit has the advantage of simple structure.
Description
Technical Field
The utility model relates to air conditioning equipment, in particular to a fresh air outlet mechanism for an air conditioner indoor unit and the air conditioner indoor unit.
Background
Part of air conditioner indoor units in the prior art are provided with fresh air systems, and fresh air flows are provided for indoor environments by the fresh air systems in a fresh air mode, so that circulation and ventilation between indoor ambient air and outdoor ambient air are realized.
However, when the user need not open the new trend mode, if there is the negative pressure between indoor environment and the outdoor environment, if the atmospheric pressure of outdoor ambient air is greater than indoor ambient air's atmospheric pressure promptly, outdoor ambient air can flow backward indoor environment through new trend system, influences user's use and experiences.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome at least one technical defect in the prior art and provides a fresh air outlet mechanism for an air conditioner indoor unit and the air conditioner indoor unit.
It is a further object of the present invention to reduce or prevent backflow of outdoor ambient air into, for example, an indoor environment in the event that the fresh air mode is turned off.
A further object of the present invention is to improve the structural stability of the indoor unit of an air conditioner.
Another further object of the present invention is to simplify the structure of the indoor unit of an air conditioner.
Particularly, according to an aspect of the present invention, a fresh air outlet mechanism for an indoor unit of an air conditioner is provided, wherein a fresh air port for discharging fresh air flow to an indoor environment where the indoor unit of the air conditioner is located is formed on the fresh air outlet mechanism; and the fresh air outlet mechanism is also provided with a fresh air baffle which is controlled to be rotatably arranged at the fresh air opening so as to open and close the fresh air opening.
Optionally, the fresh air outlet mechanism for the indoor unit of the air conditioner further comprises a motor arranged on one side of the fresh air baffle, and an output shaft of the motor is in transmission connection with the fresh air baffle and used for driving the fresh air baffle to rotate.
Optionally, the output shaft of the motor is coaxial with the axis of rotation of the fresh air baffle.
Optionally, the fresh air inlet is positioned at the lower part of the front side of the fresh air outlet mechanism; and the fresh air outlet mechanism is formed with articulated portion above the fresh air inlet for being articulated with the fresh air baffle, so that the fresh air baffle can be rotationally arranged on the fresh air outlet mechanism.
According to another aspect of the present invention, there is also provided an indoor unit of an air conditioner, including: the fresh air outlet mechanism for the indoor unit of the air conditioner comprises a fan.
Optionally, the air conditioner indoor unit further comprises: the control device is in data connection with the motor of the fresh air outlet mechanism and used for sending a first signal to the motor when the air conditioner indoor unit starts a fresh air mode so as to indicate the motor to drive the fresh air baffle to rotate and open the fresh air port, and also used for sending a second signal to the motor when the air conditioner indoor unit closes the fresh air mode so as to indicate the motor to drive the fresh air baffle to rotate and close the fresh air port.
Optionally, the air conditioner indoor unit further comprises: the air outlet end of the fresh air channel is used for being communicated with the fresh air port and is configured to guide fresh air flow flowing through the fresh air channel to the fresh air port; and the fresh air outlet mechanism is positioned at the lower part of the front side of the shell.
Optionally, the fresh air opening extends in a transverse direction of the housing; the rotation axis of the fresh air baffle extends along the transverse direction of the shell; and the rotation axis of the fresh air baffle is positioned at the top of the fresh air baffle and is higher than the fresh air port.
Optionally, the air conditioner indoor unit further comprises: the fresh air fan is arranged in the fresh air duct, is provided with an air outlet communicated with the fresh air port and is used for promoting the formation of fresh air flow which flows through the fresh air duct and sequentially flows through the air outlet and the fresh air port; and new trend air-out mechanism still includes: the air outlet part extends along the transverse direction of the shell and forms a hollow air outlet duct inside; the air outlet part is provided with a plurality of air outlet holes on the peripheral surface of the outer side of the air outlet duct and used as fresh air ports; the air guide part is connected to the transverse end part of the air outlet duct, extends upwards from the top of the air outlet duct and is communicated with an air outlet of the fresh air fan; and the inside of the air guiding part defines an air guiding duct communicated with the air outlet duct and used for guiding the fresh air flow flowing through the air outlet to the air outlet duct.
Optionally, the number of the air guiding parts is two, and the two air guiding parts are respectively connected to one transverse end part of the air outlet duct; and new trend air-out mechanism still includes: two connecting portions upwards extend to the casing from the horizontal one side of air-out portion respectively to be connected with the casing, in order to be fixed in the casing with new trend air-out mechanism.
According to the fresh air outlet mechanism for the air conditioner indoor unit and the air conditioner indoor unit, the fresh air outlet mechanism forms the fresh air baffle which is controlled to be rotatably arranged at the fresh air opening, so that the air conditioner indoor unit can utilize the fresh air baffle to open and close the fresh air opening through controlled rotation, the situation that outdoor environment air flows backwards like an indoor environment under the condition that a fresh air mode is closed can be reduced or avoided, the use experience of a user is favorably improved, and the fresh air outlet mechanism has the advantage of simple structure.
Furthermore, according to the fresh air outlet mechanism for the air conditioner indoor unit and the air conditioner indoor unit, the hinge part is formed above the fresh air opening of the fresh air outlet mechanism and is used for being hinged with the fresh air baffle, so that the fresh air baffle is rotatably arranged on the fresh air outlet mechanism, the fresh air baffle is favorably reduced or prevented from being separated from the fresh air outlet mechanism in the controlled rotating process, and the structural stability of the air conditioner indoor unit is improved.
Furthermore, according to the fresh air outlet mechanism for the air conditioner indoor unit and the air conditioner indoor unit, the output shaft of the motor for driving the fresh air baffle plate to rotate is coaxial with the rotation axis of the fresh air baffle plate, so that the transmission difficulty in the transmission process can be reduced, and the output shaft of the motor can be directly connected to the rotation axis of the fresh air baffle plate, so that any transmission mechanism does not need to be additionally arranged between the output shaft of the motor and the fresh air baffle plate, the structure of the air conditioner indoor unit is facilitated to be simplified, and the manufacturing cost is reduced.
The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.
Drawings
Some specific embodiments of the utility model will be described in detail hereinafter, by way of illustration and not limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:
fig. 1 is a schematic view of an indoor unit of an air conditioner according to an embodiment of the present invention;
fig. 2 is a schematic view of a part of the internal structure of the indoor unit of the air conditioner shown in fig. 1;
fig. 3 is a schematic view of a fresh air outlet mechanism for an indoor unit of an air conditioner according to an embodiment of the present invention;
fig. 4 is another schematic view of the fresh air outlet mechanism for the indoor unit of the air conditioner shown in fig. 3;
FIG. 5 is an enlarged view of a portion of FIG. 4 at A;
fig. 6 is a schematic block diagram of an air conditioner indoor unit according to an embodiment of the present invention.
Detailed Description
Fig. 1 is a schematic diagram of an air conditioner indoor unit 10 according to one embodiment of the present invention. The air conditioner indoor unit 10 may generally include a fresh air outlet mechanism 200, and may further include a housing 100 and a fresh air blower 400. Fig. 2 is a schematic diagram of a part of the internal structure of the air conditioner indoor unit 10 shown in fig. 1, in which a housing 100, a fresh air blower 400 and a fresh air outlet mechanism 200 are shown.
Fig. 3 is a schematic view of a fresh air outlet mechanism 200 for the indoor unit 10 of the air conditioner according to an embodiment of the present invention. The fresh air outlet mechanism 200 may be formed with an air duct for guiding the fresh air flow from the outdoor environment and flowing through the inside of the casing 100 to the fresh air port 231.
The fresh air outlet mechanism 200 may be detachably connected to the housing 100.
The fresh air outlet mechanism 200 is formed with a fresh air port 231 for discharging fresh air flow to the indoor environment where the indoor unit 10 of the air conditioner is located. And the fresh air outlet mechanism 200 further has a fresh air baffle 210 controlled to be rotatably disposed at the fresh air opening 231 to open and close the fresh air opening 231. That is, the air conditioner indoor unit 10 has the fresh air inlet 231 and the fresh air baffle 210, and the fresh air inlet 231 and the fresh air baffle 210 are both disposed on the fresh air outlet mechanism 200.
Because the new trend air-out mechanism 200 is formed with the controlled new trend baffle 210 that rotationally sets up in new trend 231 department for air conditioner 10 can utilize this new trend baffle 210 to open and close new trend 231 through controlled rotation, thereby can reduce or avoid outdoor ambient air to flow backward like indoor environment under the condition that the new trend mode was closed, this use that is favorable to improving the user is experienced, and possesses simple structure's advantage.
Because new trend baffle 210 sets up in new trend 231 department, new trend baffle 210 direct exposure is in indoor environment, and this is favorable to reducing new trend baffle 210's the installation degree of difficulty and the maintenance degree of difficulty.
Fig. 4 is another schematic view of the fresh air outlet mechanism 200 for the indoor unit 10 of the air conditioner shown in fig. 3, and fig. 5 is a partially enlarged view of a portion a in fig. 4.
In some embodiments, the fresh air outlet mechanism 200 may further include a motor 220 disposed on one side of the fresh air baffle 210, and an output shaft of the motor is in transmission connection with the fresh air baffle 210 for driving the fresh air baffle 210 to rotate. The motor 220 of the present embodiment may be a micro-stepping motor 220. In some further embodiments, two motors 220 may be provided, and are respectively disposed on two sides of the fresh air baffle 210, which is beneficial to reducing the rotation difficulty of the fresh air baffle 210.
In some optional embodiments, the fresh air outlet mechanism 200 may not be provided with the motor 220. The indoor unit 10 of the air conditioner may have a heat exchange air outlet for discharging a heat exchange air flow to an indoor environment, an air guide plate disposed at the heat exchange air outlet, and an air guide motor 220 for driving the air guide plate to rotate. The fresh air baffle 210 can be in transmission connection with the air guide motor 220 through a transmission mechanism, so that the fresh air baffle 210 can be driven by the air guide motor 220 to rotate in a controlled manner, which is beneficial to simplifying the structure of the indoor unit 10 of the air conditioner.
Fig. 6 is a schematic block diagram of an air conditioner indoor unit 10 according to an embodiment of the present invention. The air conditioner indoor unit 10 of the present embodiment may further include a control device 300, which is in data connection with the motor 220, and is configured to send a first signal to the motor 220 when the air conditioner indoor unit 10 starts the fresh air mode, so as to instruct the motor 220 to drive the fresh air baffle 210 to rotate, thereby opening the fresh air port 231, and is further configured to send a second signal to the motor 220 when the air conditioner indoor unit 10 closes the fresh air mode, so as to instruct the motor 220 to drive the fresh air baffle 210 to rotate, thereby closing the fresh air port 231.
That is to say, when the air conditioner 10 starts the fresh air mode, the control device 300 can instruct the motor 220 to drive the fresh air baffle 210 to open the fresh air opening 231, and when the air conditioner 10 closes the fresh air mode, the control device 300 can instruct the motor 220 to drive the fresh air baffle 210 to close the fresh air opening 231.
The control device 300 may be a main control board and is disposed in the casing 100. As for the manner of establishing the data connection between the control device 300 and the motor 220, it should be easily known by those skilled in the art based on the understanding of the present embodiment, and the detailed description thereof is omitted here.
The fresh air inlet 231 is located at the lower front side of the fresh air outlet mechanism 200. And the fresh air outlet mechanism 200 is formed with a hinge portion (not shown) above the fresh air inlet 231 for being hinged with the fresh air baffle 210, so that the fresh air baffle 210 is rotatably disposed in the fresh air outlet mechanism 200. That is, the fresh air outlet mechanism 200 is connected to the fresh air baffle 210 by a hinge portion, so as to rotatably connect the fresh air baffle 210 to the fresh air outlet mechanism 200.
Because the fresh air outlet mechanism 200 is further provided with a hinge part above the fresh air inlet 231 for being hinged with the fresh air baffle 210, the fresh air baffle 210 is rotatably arranged on the fresh air outlet mechanism 200, which is beneficial to reducing or avoiding the separation of the fresh air baffle 210 from the fresh air outlet mechanism 200 in the controlled rotating process, thereby improving the structural stability of the air conditioner indoor unit 10.
The hinge portion can be hinged to the middle section of the fresh air baffle 210, for example, the hinge portion can be connected to the fresh air baffle 210, so that the fresh air baffle 210 can be suspended on the fresh air outlet mechanism 200, and the fresh air baffle 210 can be prevented from shaking in the rotating process.
The inside of the casing 100 of the indoor unit 10 of the air conditioner defines a fresh air duct, and an air outlet end of the fresh air duct is used for communicating with the fresh air inlet 231 and configured to guide the fresh air flow passing through the fresh air duct to the fresh air inlet 231. And fresh air outlet mechanism 200 is located the front side lower part of casing 100, and this makes fresh air inlet 231 be located the front side lower part of casing 100 to be favorable to fresh air current to indoor environment diffusion. For example, the air conditioner indoor unit 10 may be connected to the outdoor environment by a fresh air duct, and the fresh air duct may extend from the air outlet end of the fresh air duct to the fresh air outlet 231. Since the arrangement of the fresh air duct and the fresh air duct is easy to be known by those skilled in the art, further description is omitted here.
In this embodiment, the housing 100 may have a substantially rectangular parallelepiped shape. The fresh air port 231 may extend in a lateral direction of the housing 100. The size and the appearance of new trend baffle 210 can be with the size and the appearance looks adaptation of new trend 231, for example, the size of new trend baffle 210 can be slightly more than the size of new trend 231, and this makes new trend baffle 210 can seamless shield new trend 231 to improve and prevent flowing backward the effect.
The fresh air baffle 210 may rotate in a pivoting manner. The axis of rotation of the fresh air baffle 210 extends in the transverse direction of the housing 100. And the rotation axis of new trend baffle 210 is located the top of new trend baffle 210 to be higher than new trend mouth 231, so set up, can reduce or avoid new trend baffle 210 to disturb the new trend air current when opening new trend mouth 231 and carry to indoor environment, guarantee the effective air-out area of new trend mouth 231. For example, the fresh air baffle 210 may be substantially rectangular, with its length direction parallel to the lateral extension of the housing 100, and the rotation axis of the fresh air baffle 210 may be collinear with the upper edge of the fresh air baffle 210.
In some embodiments, the output shaft of the motor 220 may be coaxial with the axis of rotation of the fresh air baffle 210. That is, the output shaft of the motor 220 may be aligned with the rotation axis of the fresh air baffle 210.
Because the output shaft of the motor 220 for driving the fresh air baffle 210 to rotate is coaxial with the rotation axis of the fresh air baffle 210, the transmission difficulty in the transmission process can be reduced, and the output shaft of the motor 220 can be directly connected to the rotation axis of the fresh air baffle 210, so that any transmission mechanism does not need to be additionally arranged between the output shaft of the motor 220 and the fresh air baffle 210, the structure of the indoor unit 10 of the air conditioner is simplified, and the manufacturing cost is reduced.
The fresh air blower 400 may be disposed in the fresh air duct, and has an air outlet for communicating with the fresh air port 231, for facilitating formation of a fresh air flow flowing through the fresh air duct and sequentially flowing through the air outlet and the fresh air port 231. The fresh air fan 400 of this embodiment may be a centrifugal fan, and an air outlet of the centrifugal fan may be directly opposite to the air guiding duct 241 of the air guiding portion 240.
Through set up new trend fan 400 in new trend wind channel, be favorable to utilizing new trend fan 400 to improve the flow and the velocity of flow of new trend air current to improve new trend air current's emission efficiency.
In some embodiments, the fresh air outlet mechanism 200 may further include an air outlet portion 230 and an air guiding portion 240.
The air outlet portion 230 extends along the transverse direction of the housing 100, and a hollow air outlet duct is formed therein. That is, the air outlet part 230 may have a substantially hollow cylindrical shape. The air outlet portion 230 has a plurality of air outlets formed on an outer circumferential surface of the air outlet duct as a fresh air outlet 231.
The air guiding portion 240 is connected to the transverse end of the air outlet duct and extends upward from the top of the air outlet duct to communicate with the air outlet of the fresh air fan 400. And the inside of the air guiding portion 240 defines an air guiding duct 241 communicated with the air outlet duct for guiding the fresh air flow flowing through the air outlet to the air outlet duct.
That is to say, the air outlet duct of the air guiding portion 240 is communicated with the air outlet of the fresh air blower 400 on the one hand, and is communicated with the air outlet duct of the air outlet portion 230 on the other hand. The air outlet duct of the air guiding portion 240 is used to communicate the air outlet of the fresh air fan 400 with the air outlet duct of the air outlet portion 230, so as to facilitate convergence of the fresh air flow flowing out of the air outlet of the fresh air fan 400.
In some embodiments, two of the wind guide portions 240 may be respectively connected to one lateral end of the wind outlet duct. And fresh air outlet mechanism 200 can further include two connecting portions 250, upwards extend to casing 100 from the horizontal one side of air outlet portion 230 respectively to be connected with casing 100, in order to be fixed in casing 100 with fresh air outlet mechanism 200.
In this embodiment, the air outlet portion 230, the air guiding portion 240 and the connecting portion 250 may be integrally formed, so that the whole fresh air outlet mechanism 200 may form a U shape. For example, each of the connection portions 250 may extend substantially along a longitudinal direction of the casing 100 and be fixedly connected to two lateral ends of the lower portion of the front side of the casing 100, the air outlet portion 230 may be disposed between the two connection portions 250, the air guiding portions 240 may be disposed in one-to-one contact with the connection portions 250, and one air guiding portion 240 is disposed in one contact with one side of one connection portion 250 facing the other connection portion 250.
The fresh air outlet mechanism 200 and the air conditioner indoor unit 10 for the air conditioner indoor unit 10 of this embodiment, because the fresh air outlet mechanism 200 is formed with the controlled new air baffle 210 that rotationally sets up in new air port 231 department, make the air conditioner indoor unit 10 can utilize this new air baffle 210 to open and close new air port 231 through controlled rotation, thereby can reduce or avoid outdoor environment air to flow backward like indoor environment under the condition that the new air mode was closed, this is favorable to improving user's use and experiences, and possesses simple structure's advantage.
Thus, it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the utility model have been illustrated and described in detail herein, many other variations or modifications consistent with the principles of the utility model may be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the utility model. Accordingly, the scope of the utility model should be understood and interpreted to cover all such other variations or modifications.
Claims (10)
1. A fresh air outlet mechanism for an indoor unit of an air conditioner is characterized in that,
a fresh air outlet for discharging fresh air flow to the indoor environment where the indoor unit of the air conditioner is located is formed on the fresh air outlet mechanism; and the fresh air outlet mechanism is also provided with a fresh air baffle which is controlled to be rotationally arranged at the fresh air port so as to open and close the fresh air port.
2. The fresh air outlet mechanism for the indoor unit of the air conditioner as claimed in claim 1, further comprising:
the motor, set up in one side of new trend baffle, and its output shaft with new trend baffle transmission is connected, is used for the drive the new trend baffle rotates.
3. The fresh air outlet mechanism for an indoor unit of an air conditioner as claimed in claim 2,
the output shaft of the motor is coaxial with the rotation axis of the fresh air baffle.
4. The fresh air outlet mechanism for an indoor unit of an air conditioner as claimed in claim 1,
the fresh air inlet is positioned at the lower part of the front side of the fresh air outlet mechanism; and is
The fresh air outlet mechanism is provided with a hinge part above the fresh air inlet and is used for being hinged with the fresh air baffle, so that the fresh air baffle is rotatably arranged on the fresh air outlet mechanism.
5. An indoor unit for an air conditioner, comprising:
the fresh air outlet mechanism for the indoor unit of the air conditioner as claimed in any one of claims 1 to 4.
6. An indoor unit for an air conditioner according to claim 5, further comprising:
and the control device is in data connection with the motor of the fresh air outlet mechanism, is used for sending a first signal to the motor when the air conditioner indoor unit starts a fresh air mode so as to indicate the motor to drive the fresh air baffle to rotate so as to open the fresh air port, and is also used for sending a second signal to the motor when the air conditioner indoor unit closes the fresh air mode so as to indicate the motor to drive the fresh air baffle to rotate so as to close the fresh air port.
7. An indoor unit for an air conditioner according to claim 5, further comprising:
the air outlet end of the fresh air channel is used for being communicated with the fresh air port and is configured to guide fresh air flow flowing through the fresh air channel to the fresh air port; and is
The fresh air outlet mechanism is positioned at the lower part of the front side of the shell.
8. An indoor unit of an air conditioner according to claim 7,
the fresh air opening extends along the transverse direction of the shell;
the rotation axis of the fresh air baffle extends along the transverse direction of the shell; and the rotation axis of the fresh air baffle is positioned at the top of the fresh air baffle and is higher than the fresh air port.
9. An indoor unit for an air conditioner according to claim 7, further comprising:
the fresh air fan is arranged in the fresh air duct, is provided with an air outlet communicated with the fresh air port and is used for promoting the formation of fresh air flow which flows through the fresh air duct and sequentially flows through the air outlet and the fresh air port; and is
Fresh air outlet mechanism still includes:
the air outlet part extends along the transverse direction of the shell and forms a hollow air outlet duct inside; the air outlet part is provided with a plurality of air outlet holes on the peripheral surface of the outer side of the air outlet duct and used as the fresh air port; and
the air guide part is connected to the transverse end part of the air outlet duct, extends upwards from the top of the air outlet duct and is communicated with an air outlet of the fresh air fan; and the inside of the air guide part defines an air guide duct communicated with the air outlet duct and used for guiding fresh air flow flowing through the air outlet to the air outlet duct.
10. An indoor unit of an air conditioner according to claim 9,
the two air guide parts are respectively connected with one transverse end part of the air outlet duct; and is
Fresh air outlet mechanism still includes:
two connecting portions, follow respectively the horizontal one side of air-out portion upwards extends to the casing, and with the casing is connected, in order to incite somebody to action fresh air outlet mechanism is fixed in the casing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121146363.8U CN216143829U (en) | 2021-05-26 | 2021-05-26 | Fresh air outlet mechanism for air conditioner indoor unit and air conditioner indoor unit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121146363.8U CN216143829U (en) | 2021-05-26 | 2021-05-26 | Fresh air outlet mechanism for air conditioner indoor unit and air conditioner indoor unit |
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| CN216143829U true CN216143829U (en) | 2022-03-29 |
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| CN202121146363.8U Active CN216143829U (en) | 2021-05-26 | 2021-05-26 | Fresh air outlet mechanism for air conditioner indoor unit and air conditioner indoor unit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114738954A (en) * | 2022-03-30 | 2022-07-12 | 青岛海尔空调器有限总公司 | Control method and system for fresh air fan of air conditioner |
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2021
- 2021-05-26 CN CN202121146363.8U patent/CN216143829U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114738954A (en) * | 2022-03-30 | 2022-07-12 | 青岛海尔空调器有限总公司 | Control method and system for fresh air fan of air conditioner |
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