Air conditioner outdoor unit

Abstract

The utility model discloses an air conditioner outdoor unit, and belongs to the technical field of air conditioners. The air conditioner outdoor unit comprises an outdoor unit shell; the outdoor fan is arranged in the outdoor unit shell; the electric control box is arranged in the outdoor unit shell; the outdoor control panel is accommodated in the electric control box, and the outdoor control panel comprises a fan driving module; and the common mode inductor is fixed on the outdoor control panel, and the common mode inductor is electrically connected between the fan driving module and the outdoor fan. In the utility model, aiming at the outdoor fan with an external drive, the common-mode inductor is electrically connected between the outdoor fan and the fan driving module, so that the common-mode noise between the fan driving module and the outdoor fan is effectively inhibited, the electromagnetic interference (EMl) to other electronic equipment is reduced, and the production cost is reduced while the electromagnetic compatibility of the air conditioning system is improved. The number of turns and the inductance value of the common mode inductor can be set according to the strength of disturbance energy, and the optimal EMl suppression effect is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of air conditioning, and in particular relates to an outdoor unit of an air conditioner. Background Art

[0002] Competition in the home appliance industry is increasingly fierce, and achieving better performance and lower costs is a common goal. Early outdoor fans were pre-assembled components, with the fan driver module built into the fan assembly. With the trend toward cost reduction, externalizing the fan driver can reduce costs by 1-2 RMB. When the fan driver is external, the fan driver module is installed on the outdoor control board inside the electrical control box and connected to the outdoor fan via a long fan cable. This setup generates interference power from the outdoor fan, making it more difficult to pass EMI testing.

[0003] In the related art, there are usually two measures to address the interference power of outdoor fans: one is to add a snap-on magnetic ring to the fan cable, and the other is to fix the magnetic ring to the fan cable and cover it with heat shrink tubing. In the first measure, production personnel need to clip the magnetic ring to the fan cable and then tighten it with a cable tie to the outside of the magnetic ring casing to ensure a closer contact between the two halves of the magnetic ring, which seriously affects production efficiency. In the second measure, the magnetic ring is pre-installed on the fan cable, usually with 2-4 turns, and then protected with heat shrink tubing, which also affects the production efficiency of outdoor fans.

[0004] Furthermore, in both of these measures, to speed production, the snap-on magnetic ring is typically wrapped around the fan cable with only one turn, while the pre-installed magnetic ring is typically wound two to four times. Both methods result in poor interference suppression. Furthermore, the magnetic ring is suspended in the air, making it susceptible to contact with the electrical control box or outdoor unit housing during mechanical vibration testing, potentially causing the magnetic ring to break. Utility Model Content

[0005] The present invention aims to solve at least one of the technical problems in the related art to a certain extent.

[0006] According to an embodiment of the present disclosure, there is provided an air conditioner outdoor unit, comprising:

[0007] outdoor housing;

[0008] an outdoor fan, disposed in the outdoor housing;

[0009] an electric control box, arranged in the outdoor housing;

[0010] an outdoor control panel housed in the electrical control box, the outdoor control panel including a fan drive module;

[0011] A common-mode inductor is fixed on the outdoor control board, and the common-mode inductor is electrically connected between the fan drive module and the outdoor fan.

[0012] This technical solution provides an air conditioner outdoor unit that drives an external outdoor fan. The fan drive module is mounted on the outdoor control board, and a common-mode inductor is electrically connected between the outdoor fan and the fan drive module. This effectively suppresses common-mode noise between the fan drive module and the outdoor fan, reducing electromagnetic interference (EMI) with other electronic devices, improving the electromagnetic compatibility of the air conditioning system, and lowering production costs. The number of turns and inductance of the common-mode inductor can be adjusted based on the intensity of the interference energy to achieve optimal EMI suppression, effectively resolving the EMI issue associated with an external outdoor fan drive.

[0013] According to an embodiment of the present disclosure, the outdoor control board includes a PCB board, and the common-mode inductor is welded on the PCB board, which facilitates installation and improves production efficiency and installation reliability.

[0014] According to an embodiment of the present disclosure, a fan socket is provided on the outdoor control panel, the output end of the fan drive module is electrically connected to the fan socket through the common-mode inductor, and the fan socket is connected to the outdoor fan through the fan UVW line; by providing the fan socket, the connection of the outdoor fan is more convenient, and when the outdoor fan needs to be maintained or replaced, it can be more convenient to disassemble and reconnect.

[0015] According to an embodiment of the present disclosure, the common-mode inductor includes a magnetic core and three coils, the magnetic core has a closed channel, the three coils are wound side by side in the same winding direction on the surface of the magnetic core, and the three-phase output end of the fan drive module is electrically connected to the outdoor fan through the three coils; the common-mode inductor under this structure is a three-wire common-mode inductor, and its three coils are wound side by side in the same winding direction, thereby improving production efficiency.

[0016] According to the embodiment of the present disclosure, the coil adopts three layers of insulated wire, which enhances its insulation performance and fully meets safety regulations.

[0017] According to an embodiment of the present disclosure, the common-mode inductor further includes a base, the magnetic core is mounted on the base, and both ends of the coil are connected to pins of the base, which are soldered to the PCB of the outdoor control board. By providing a base to secure the magnetic core to the base, the stability and reliability of the common-mode inductor during operation are ensured, preventing displacement or damage due to vibration or mechanical stress.

[0018] According to an embodiment of the present disclosure, the three coils have the same number of turns; this arrangement enhances the common-mode suppression capability, reduces electromagnetic mutual interference between coils, and improves the suppression effect and stability of the common-mode inductor on the common-mode signal.

[0019] According to an embodiment of the present disclosure, the material of the magnetic core is nickel-zinc magnetic material. The common-mode inductor using nickel-zinc magnetic material can effectively suppress the high-frequency common-mode noise generated when the outdoor fan is running, and effectively improve the electromagnetic compatibility and overall performance of the system.

[0020] According to an embodiment of the present disclosure, the outdoor fan includes a fan and a motor connected to the fan. The motor is configured to drive an external DC motor, which has the advantages of energy saving, high efficiency and lower noise.

[0021] According to an embodiment of the present disclosure, there is provided an air conditioner outdoor unit, comprising:

[0022] outdoor housing;

[0023] Driving an external outdoor fan, which is arranged in the outdoor housing;

[0024] an electric control box, arranged in the outdoor housing;

[0025] An outdoor control panel is housed in the electrical control box and is used to drive the outdoor fan. The outdoor control panel is provided with a fan drive module.

[0026] The common-mode inductor is fixed on the outdoor control board and connected in series with the three-phase input line of the outdoor fan to generate a magnetic field based on the common-mode current of the outdoor fan to suppress common-mode noise.

[0027] This technical solution provides an air conditioner outdoor unit that drives an external outdoor fan. By connecting a common-mode inductor in series with the three-phase input line of the outdoor fan, it effectively suppresses the common-mode noise generated during the operation of the outdoor fan, reducing electromagnetic interference (EMI) to other electronic equipment, improving the electromagnetic compatibility of the air conditioning system while reducing production costs. The number of turns and inductance of the common-mode inductor can be adjusted based on the intensity of the interference energy to achieve optimal EMI suppression, effectively resolving the EMI problem associated with external outdoor fan drivers. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 、 Figure 2 is a schematic structural diagram of an air-conditioning outdoor unit in different viewing angles according to an embodiment of the present disclosure;

[0029] Figure 3 A schematic structural diagram of an air conditioner outdoor unit omitting the air outlet grille according to an embodiment of the present disclosure;

[0030] Figure 4 Schematic diagram of the internal partial structure of the air conditioner outdoor unit according to an embodiment of the present disclosure Figure 1 ;

[0031] Figure 5 A schematic structural diagram of an outdoor fan according to an embodiment of the present disclosure;

[0032] Figure 6 System block diagram of an air conditioner outdoor unit according to an embodiment of the present disclosure;

[0033] Figure 7 This is a schematic diagram of the structure of the outdoor fan drive externally installed in the air conditioner outdoor unit according to the embodiment of the present disclosure. Figure 1 ;

[0034] Figure 8 1 is a schematic structural diagram of an outdoor control panel for driving an outdoor fan according to an embodiment of the present disclosure;

[0035] Figure 9 This is a schematic diagram of the structure of the outdoor fan drive externally installed in the air conditioner outdoor unit according to the embodiment of the present disclosure. Figure 2 ;

[0036] Figure 10 is a schematic structural diagram of a common-mode inductor according to an embodiment of the present disclosure;

[0037] Figure 11 Schematic diagram of the wiring of the common-mode inductor according to an embodiment of the present disclosure.

[0038] In the above figures: air conditioner outdoor unit 10; outdoor housing 1; outdoor air inlet 11; outdoor air outlet 12; air outlet grille 13; outdoor heat exchanger 2; outdoor fan 3; fan 31; motor 32; compressor 4; electrical control box 5; outdoor control board 51; fan drive module 52; fan UVW line 53; fan socket 54; common mode inductor 6; magnetic core 61; coil 62; base 63. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solutions and advantages of this application more clearly understood, the present application is described and illustrated below in conjunction with the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely used to explain this application and are not intended to limit this application. Based on the embodiments provided in this application, all other embodiments obtained by those of ordinary skill in the art without making any creative efforts are within the scope of protection of this application.

[0040] Obviously, the drawings described below are merely examples or embodiments of the present application. Those skilled in the art can, without inventive effort, apply the present application to other similar scenarios based on these drawings. Furthermore, it is also understood that, although the effort involved in such a development process may be complex and lengthy, for those skilled in the art related to the content disclosed in this application, changes in design, manufacturing, or production based on the technical content disclosed in this application are merely conventional technical means and should not be construed as an insufficiency of the content disclosed in this application.

[0041] References to "embodiments" in this application mean that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described in this application may be combined with other embodiments, unless there is a conflict.

[0042] The words "connect", "connected", "coupled" and the like involved in this application are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The "plurality" involved in this application refers to two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, "A and / or B" can mean: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the previous and next associated objects are in an "or" relationship. The terms "first", "second", "third" and the like involved in this application are merely to distinguish similar objects, and do not represent a specific ordering of objects.

[0043] The utility model provides an air-conditioning outdoor unit 10, which is described below with reference to Figures 1 to 11 The air-conditioning outdoor unit 10 provided in this application is described.

[0044] In an exemplary embodiment of the air-conditioning outdoor unit 10 provided by the present invention, Figures 1 and 2 The air conditioner outdoor unit 10 includes an outdoor casing 1 , which is installed outdoors and forms the overall appearance of the air conditioner outdoor unit 10 .

[0045] The outdoor housing 1 defines an accommodation space inside, and the accommodation space is used to install and fix various components of the air conditioner outdoor unit. The outdoor housing 1 has a top end and a bottom end, and the top end and the bottom end are two ends of the outdoor housing 1 that are oppositely arranged in the vertical direction.

[0046] The outdoor casing 1 may include an outdoor air inlet 11. The outdoor air inlet 11 communicates with the accommodating space and serves as an inlet for external air to flow into the outdoor casing 1.

[0047] The outdoor housing 1 may include an outdoor air outlet 12. The outdoor air outlet 12 is communicated with the accommodating space and serves as an outlet for the heat-exchanged air in the outdoor housing 1 to flow out.

[0048] Indoor air outside the outdoor casing 1 enters the interior of the outdoor casing 1 through the outdoor air inlet 11 and is finally discharged into the room through the outdoor air outlet 12 .

[0049] In some embodiments of the present application, the outdoor air inlet 11 can be provided on the rear side of the outdoor housing 1, and the outdoor air outlet 12 is located on the front side of the outdoor housing 1. Of course, in other embodiments, the outdoor air inlet 11 can also be provided on the side of the outdoor housing 1.

[0050] The outdoor air inlet 11 may be provided on only one side surface of the outdoor casing 1 or on both side surfaces of the outdoor casing 1 at the same time.

[0051] In some embodiments of the present application, the air-conditioning outdoor unit 10 may include an air outlet grille 13 , which is connected to the outdoor housing 1 and located at the outdoor air outlet 12 .

[0052] It should be noted that the direction described in the article is based on the direction in which the user is facing the air-conditioning outdoor unit. The side of the air-conditioning outdoor unit facing the user when in use is defined as the front side, the opposite side is defined as the rear side, and the left and right sides are distinguished based on the direction in which the user is facing the air-conditioning outdoor unit.

[0053] In some embodiments of the present application, the air-conditioning outdoor unit 10 may include an outdoor fan 3 , which is disposed in the accommodation space of the outdoor casing 1 .

[0054] refer to Figure 3 The outdoor fan 3 can be arranged toward the outdoor air outlet 12 , that is, the outdoor fan 3 is arranged on the inner side of the outdoor air outlet 12 .

[0055] The air-conditioning outdoor unit 10 may include an outdoor heat exchanger 2 , and the outdoor heat exchanger 2 is disposed in the accommodation space.

[0056] The outdoor heat exchanger 2 may be installed on the inner side of the outdoor air inlet 11 , that is, the outdoor heat exchanger 2 is located on the side of the outdoor fan 3 close to the outdoor air inlet 11 .

[0057] The outdoor fan 3 is installed between the outdoor heat exchanger 2 and the outdoor air outlet 12. Driven by the outdoor fan 3, outdoor air enters the accommodation space through the outdoor air inlet 11. There, the outdoor air exchanges heat with the outdoor heat exchanger 2. Driven by the outdoor fan 3, the heat-exchanged outdoor air is then discharged from the outdoor housing 1 through the outdoor air outlet 12.

[0058] The outdoor heat exchanger 2 may be a plate heat exchanger. In order to increase the heat exchange area of ​​the outdoor heat exchanger 2 while minimizing the size of the air-conditioning outdoor unit 10, the outdoor heat exchanger 2 may be configured as an L-shaped heat exchanger.

[0059] refer to Figure 4 The air-conditioning outdoor unit 10 may include a compressor 4, which is disposed in the accommodation space.

[0060] The air conditioner may include a throttling device for throttling. The throttling device may be arranged in the air conditioner indoor unit or the air conditioner outdoor unit.

[0061] An air conditioner may include a refrigerant circuit. Connecting piping connects the indoor and outdoor units of the air conditioner to form a refrigerant circuit. The air conditioner uses this refrigerant circuit to circulate through the compressor, condenser, throttling device, and evaporator, enabling indoor cooling or heating.

[0062] The air conditioner may include an air conditioner indoor unit including an indoor heat exchanger.

[0063] The indoor heat exchanger and the outdoor heat exchanger function as a condenser or an evaporator. When the indoor heat exchanger functions as a condenser, the air conditioner functions as a heater in heating mode, and when the indoor heat exchanger functions as an evaporator, the air conditioner functions as a cooler in cooling mode.

[0064] The refrigeration cycle and heating cycle include compression process, condensation process, expansion process and evaporation process. The refrigerant absorbs and releases heat to provide cooling or heat to the indoor space, thereby achieving temperature regulation of the indoor space.

[0065] The compressor compresses the refrigerant gas into a high-temperature and high-pressure state and discharges the compressed refrigerant gas, and the discharged refrigerant gas flows into the condenser.

[0066] The condenser condenses the compressed high-temperature and high-pressure gaseous refrigerant into liquid refrigerant, and the heat is released to the surrounding environment through the condensation process.

[0067] The liquid refrigerant flowing out of the condenser enters the throttling device, which expands the high-temperature and high-pressure liquid refrigerant condensed by the condenser into a low-pressure liquid refrigerant.

[0068] The low-pressure liquid refrigerant flowing out of the throttling device enters the evaporator. When the liquid refrigerant flows through the evaporator, it absorbs heat and evaporates into low-temperature and low-pressure refrigerant gas. The refrigerant gas in a low-temperature and low-pressure state returns to the compressor.

[0069] The evaporator can achieve a cooling effect by utilizing the latent heat of evaporation of the refrigerant to exchange heat with the material to be cooled. In the above-mentioned entire cycle, the air conditioner can adjust the temperature of the indoor space.

[0070] In some embodiments of the present application, reference is made to Figure 4 The air-conditioning outdoor unit 10 may include an electric control box 5 , which is disposed in a receiving space within the outdoor casing 1 .

[0071] In some embodiments of the present application, the air-conditioning outdoor unit 10 may include an outdoor control panel 51 , wherein the outdoor control panel 51 is housed in an electric control box.

[0072] The electric control box 5 protects the outdoor control panel 51 to prevent objects in the external space from contaminating the electrical components on the outdoor control panel 51, thereby improving safety.

[0073] Understandably, the reference Figure 6 The outdoor control board 51 is electrically connected to at least the indoor control board, the compressor 4, and the outdoor fan 3 of the air conditioner indoor unit, so that it controls the operation of the compressor 4 and the outdoor fan 3 according to the control instructions issued by the indoor control board.

[0074] refer to Figure 7 The outdoor control board 51 may include a fan driving module 52, which is electrically connected to the outdoor fan 3 and is used to drive the outdoor fan 3 to work according to a control signal.

[0075] The fan driving module 52 is provided on the outdoor control board 51 , that is, the outdoor fan 3 is an externally driven fan.

[0076] In the related art, the external outdoor fan 3 is directly connected to the fan driving module 52 on the outdoor control panel 51 through the fan UVW line 53, so that the fan driving module 52 drives and controls the outdoor fan 3.

[0077] When the outdoor fan 3 is working, since there is strong high-frequency noise at the output end of the fan driving module 52 and the fan UVW line 53, outdoor fan interference power is easily generated.

[0078] Outdoor fan interference power refers to the electromagnetic interference (EMI) power generated by outdoor fans during operation. This interference may affect surrounding electronic equipment, causing system performance degradation or other equipment failures.

[0079] In order to effectively suppress the electromagnetic interference of the outdoor fan 3, the following two methods are usually adopted in the relevant technology: Method 1: by installing a snap-on magnetic ring on the fan UVW line 53; Method 2: the magnetic ring is fixed on the fan UVW line 53.

[0080] Specifically, in the above-mentioned method 1, the process of installing the clip-on magnetic ring is usually arranged in the production link of the whole machine. The production personnel need to clip the magnetic ring on the UVW line 53 of the fan, and then use a cable tie to fasten it on the outside of the magnetic ring casing to make the two halves of the magnetic ring contact more closely, which seriously affects production efficiency.

[0081] To speed production, the magnetic ring is wrapped around the fan's UVW line 53 with only one turn (additional turns would affect production efficiency), resulting in poor interference suppression. Furthermore, the snap-on magnetic ring is suspended in the air, making it prone to hitting the electrical control box or outdoor housing 1 during mechanical vibration testing, potentially causing the magnetic ring to break.

[0082] In the second approach, the magnetic ring is pre-installed on the fan UVW cable 53, typically wound 2-4 times, and then protected with a heat shrink tubing. This affects the production efficiency of the outdoor fan 3 and limits the interference suppression effect. Furthermore, the magnetic ring is in a floating state, making it easy for it to strike the electrical control box or outdoor housing 1 during mechanical vibration testing, causing the magnetic ring to break.

[0083] In order to solve the above technical problems, in some embodiments of the present application, the air-conditioning outdoor unit 10 may include a common-mode inductor 6 .

[0084] refer to Figure 7 The common-mode inductor 6 is fixed on the outdoor control board 51 , wherein the common-mode inductor 6 is electrically connected between the fan drive module 52 and the outdoor fan 3 .

[0085] The air-conditioning outdoor unit provided in this embodiment drives an external outdoor fan 3, sets the fan drive module 52 on the PCB board of the outdoor control board 51, and electrically connects the common-mode inductor 6 between the outdoor fan 3 and the fan drive module 52, thereby effectively suppressing the common-mode noise between the fan drive module 52 and the outdoor fan 3, reducing electromagnetic interference (EMI) to other electronic devices, improving the electromagnetic compatibility of the air-conditioning system, and reducing production costs.

[0086] At the same time, the common-mode inductor 6 is fixed on the outdoor control board 51, which improves the installation firmness, protects the common-mode inductor 6 from physical damage such as bumps, and can maintain its electromagnetic characteristics, thereby more effectively suppressing electromagnetic interference, helping to maintain the stability and reliability of the system and ensure the normal operation of the system.

[0087] It is understandable that the number of turns and inductance of the common mode inductor 6 can be set according to the strength of the interference energy to achieve the best EMI suppression effect, effectively solving the EMI problem of the outdoor fan 3 driving the external device.

[0088] In some embodiments of the present application, the outdoor control panel 51 may include a PCB board, wherein the PCB board is housed in an electric control box.

[0089] The outdoor control panel 51 may include a plurality of electrical components, which are arranged on a PCB board for controlling related components to realize various predetermined functions.

[0090] In this embodiment, the common-mode inductor 6 is soldered on the PCB board, which is convenient for installation and improves production efficiency and installation reliability.

[0091] In some embodiments of this application, reference is made to Figure 8 、 Figure 9 A fan socket 54 is provided on the outdoor control panel 51 , and the fan socket 54 is connected to the outdoor fan 3 through a fan UVW line 53 .

[0092] The output end of the fan driving module 52 is electrically connected to the fan socket 54 through the common mode inductor 6. The fan socket 54 can be provided at one end of the PCB board.

[0093] In this embodiment, by providing the fan socket 54, the connection of the outdoor fan 3 is made more convenient, and when the outdoor fan 3 needs to be maintained or replaced, it can be more conveniently disassembled and reconnected, thereby improving the replacement and maintenance efficiency of the outdoor fan 3.

[0094] In some examples of this application, reference is made to Figure 10 The common mode inductor 6 may include a magnetic core 61 having a closed channel.

[0095] Magnetic core 61 is made of nickel-zinc magnetic material, which has high impedance characteristics. In this embodiment, the use of nickel-zinc magnetic material in common-mode inductor 6 effectively prevents common-mode noise from passing through the inductor, thereby effectively suppressing the high-frequency common-mode noise generated by the operation of outdoor fan 3, further improving the electromagnetic compatibility and overall performance of the system.

[0096] In some embodiments of the present application, the common-mode inductor 6 may include three coils 62 , and the three coils 62 are wound side by side in the same winding direction on the surface of the magnetic core 61 .

[0097] The common-mode inductor in the above structure is a three-wire common-mode inductor, and the three-phase output terminals (U phase, V phase, W phase) of the fan driving module 52 are electrically connected to the outdoor fan 3 through three coils 62 .

[0098] In this embodiment, the three coils 62 are wound side by side in the same winding direction, improving production efficiency, consistency, and stability, while also reducing production costs. Furthermore, the three coils 62 winding side by side in the same direction help to jointly act on common-mode noise, enhancing common-mode noise suppression and improving the overall electrical performance of the system.

[0099] In some examples of this application, reference is made to Figure 10 The three coils 62 have the same number of turns. This ensures that each coil 62 has consistent inductance and impedance when processing common-mode noise, thereby optimizing the overall common-mode suppression effect, reducing electromagnetic interference between coils 62, and improving the suppression effect and stability of the common-mode inductor 6 on common-mode signals.

[0100] In some embodiments of the present application, the coil 62 uses three layers of insulated wire.

[0101] Among them, the fan UVW line 53 is a high-voltage line, and the coil 62 adopts a three-layer insulation wire to enhance electrical isolation and protection, thereby enhancing its insulation performance and fully meeting safety regulations.

[0102] In some examples of this application, reference is made to Figure 11 The common mode inductor 6 may include a base 63 . The magnetic core 61 is mounted on the base 63 and both ends of the coil 62 are connected to pins of the base 63 . The pins of the base 63 are soldered to the PCB board of the outdoor control board 51 .

[0103] In this embodiment, by providing a base 63 welded on the PCB board and fixing the magnetic core 61 on the base 63, the stability and reliability of the common-mode inductor 6 during operation are ensured, and displacement or damage caused by vibration or mechanical stress is prevented.

[0104] Soldering the base 63 to the PCB can provide a more secure electrical connection, thereby improving electrical performance and overall system reliability.

[0105] In some embodiments of the present application, referring to 6, the outdoor fan 3 may include a fan 31, which rotates to drive outdoor air into the accommodation space from the outdoor air inlet 11, and is sent out from the outdoor air outlet 12 after heat exchange in the outdoor heat exchanger.

[0106] The outdoor fan 3 may include a motor 32. The motor 32 is connected to the fan 31 to drive the fan 31 to rotate. The motor 32 is configured to drive an external DC motor 32.

[0107] It can be understood that external driving means driving the motor 32 to work through a driving circuit (blower driving module 52) that is independently arranged outside the motor 32, that is, the driving circuit is designed to be external to the motor 32 itself.

[0108] Driving an external DC motor 32 offers advantages such as energy efficiency and low noise. This configuration allows the outdoor fan 3 to be used with different fan driver modules 52 to accommodate a variety of application requirements. Different drive circuits can be selected as needed to meet specific performance requirements.

[0109] In some other embodiments of the present application, the common-mode inductor 6 can be connected in series to the three-phase input line of the outdoor fan 3 to generate a magnetic field based on the common-mode current of the outdoor fan 3 to suppress common-mode noise.

[0110] The air conditioner outdoor unit provided in this embodiment drives an external outdoor fan 3. A common-mode inductor 6 is connected in series with the three-phase input lines of the outdoor fan 3. This effectively suppresses common-mode noise generated during the operation of the outdoor fan 3, reduces electromagnetic interference (EMI) to other electronic devices, improves the electromagnetic compatibility (EMC) of the air conditioner system, and reduces production costs. The number of turns and inductance of the common-mode inductor 6 can be set based on the intensity of the interference energy to achieve optimal EMI suppression, effectively resolving the EMI issue caused by the outdoor fan 3 driving the external device.

[0111] In some embodiments of the present application, the operating frequency of the outdoor fan 3 is 15kHz to 20kHz. 15kHz to 20kHz is generally selected as the operating frequency of the outdoor fan 3 to ensure electromagnetic compatibility and low noise while providing good performance.

[0112] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

[0113] For ease of explanation, the above description has been presented in conjunction with specific embodiments. However, the above exemplary discussion is not intended to be exhaustive or to limit the embodiments to the specific forms disclosed above. Based on the above teachings, various modifications and variations are possible. The above embodiments have been selected and described to better explain the principles and practical applications, thereby enabling those skilled in the art to better utilize the embodiments and various different variations of the embodiments suitable for specific use considerations.

Claims

1. An air conditioner outdoor unit, characterized in that: include: outdoor housing; an outdoor fan, disposed in the outdoor housing; an electric control box, arranged in the outdoor housing; an outdoor control panel housed in the electrical control box, the outdoor control panel including a fan drive module; A common-mode inductor is fixed on the outdoor control board, and the common-mode inductor is electrically connected between the fan drive module and the outdoor fan.

2. The air conditioner outdoor unit according to claim 1, characterized in that: The outdoor control board includes a PCB board, and the common-mode inductor is soldered on the PCB board.

3. The air conditioner outdoor unit according to claim 1, characterized in that: A fan socket is provided on the outdoor control panel, the output end of the fan driving module is electrically connected to the fan socket through the common mode inductor, and the fan socket is connected to the outdoor fan through a fan UVW line.

4. The air conditioner outdoor unit according to claim 1, characterized in that: The common-mode inductor includes a magnetic core and three coils. The magnetic core has a closed channel. The three coils are wound side by side on the surface of the magnetic core in the same winding direction. The three-phase output end of the fan drive module is electrically connected to the outdoor fan through the three coils.

5. The air conditioner outdoor unit according to claim 4, characterized in that: The coil adopts three layers of insulation wire.

6. The air conditioner outdoor unit according to claim 4 or 5, characterized in that: The common-mode inductor further includes a base, the magnetic core is mounted on the base, and both ends of the coil are connected to pins of the base, and the pins are welded to the PCB board of the outdoor control board.

7. The air conditioner outdoor unit according to claim 4 or 5, characterized in that: The three coils have the same number of turns.

8. The air conditioner outdoor unit according to claim 4 or 5, characterized in that: The material of the magnetic core is nickel-zinc magnetic material.

9. The air conditioner outdoor unit according to claim 1, characterized in that: The outdoor fan includes a fan and a motor connected to the fan, and the motor is configured to drive an external DC motor.

10. An air conditioner outdoor unit, characterized in that: include: outdoor housing; Driving an external outdoor fan, which is arranged in the outdoor housing; an electric control box, arranged in the outdoor housing; An outdoor control panel is housed in the electric control box and is electrically connected to the outdoor fan to drive the outdoor fan; The common-mode inductor is fixed on the outdoor control board and connected in series with the three-phase input line of the outdoor fan to generate a magnetic field based on the common-mode current of the outdoor fan to suppress common-mode noise.

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