CN210980123U - An air conditioner outdoor unit - Google Patents

Abstract

The utility model provides an air condensing units, it includes off-premises station main part, fan, fresh air pipeline, radiator and the piece that generates heat, the fan sets up inside the off-premises station main part, fresh air pipeline installs in the off-premises station main part and communicate external with the fan side, the radiator is installed in the fresh air pipeline, just generate heat the piece with radiator fixed connection. The outdoor unit of the air conditioner can achieve the heat dissipation effect by utilizing the advantages of the external environment to the maximum extent, increase the heat exchange area of the heat radiator, improve the heat exchange efficiency and reduce the energy loss.

Description

An air conditioner outdoor unit

technical field

The utility model relates to the technical field of air conditioners, in particular to an outdoor unit of an air conditioner.

Background technique

An air conditioner is a device that uses the refrigerant inside to perform the compression process, condensation process, expansion process and evaporation process to complete the refrigeration or heating cycle. Existing air conditioners usually include an indoor unit and an outdoor unit. The indoor unit and the outdoor unit are connected by refrigerant pipes. Depending on the type of compressor installed inside the outdoor unit, the air conditioners can be divided into ordinary air conditioners, inverter air conditioners, and inverter air conditioners. The main unit of the air conditioner is automatically infinitely variable. It can automatically provide the required cooling capacity according to the room conditions. When the indoor temperature reaches the desired value, the air conditioner main unit runs at a constant speed that can accurately maintain this temperature, thereby ensuring the stability of the ambient temperature. . During the working process of the air conditioner, since the electronic control components will generate a lot of heat, if the heat cannot be discharged in time, the temperature inside the electronic control components will continue to rise under the long-term operation of the air conditioner, which will cause the internal circuit to be damaged. burn. The existing solution is usually to install heat sinks on the electronic control components, but because the area of the heat sinks is small, when the temperature is high, the heat dissipation effect of the heat sinks is not obvious; The air ducts of the heating components allow the cold air to pass directly through the heating components to cool down, but it is easy to cause the fresh air in the air duct to bring in dust and harmful substances and attach to the electronic control components, which may easily cause safety hazards.

Utility model content

Based on the above-mentioned deficiencies of the prior art, the purpose of the present utility model is to provide an air conditioner outdoor unit, which can utilize the advantages of the external environment to the greatest extent to achieve the heat dissipation effect, increase the heat exchange area of the radiator, and improve the heat exchange rate. efficiency, reducing energy loss.

Based on this, the technical solution of the present invention is as follows: an air conditioner outdoor unit, which includes an outdoor unit main body, a fan, a fresh air duct, a radiator and a heating element, wherein the fan is arranged inside the outdoor unit main body, and the fresh air duct The radiator is installed in the main body of the outdoor unit and communicates with the outside world and the fan side, the radiator is installed in the fresh air duct, and the heating element is fixedly connected to the radiator.

Optionally, the top of the fresh air duct is provided with an opening, and the radiator extends into the interior of the fresh air duct from the opening, and the radiator is sealed with the fresh air duct, and the heating element is located in the fresh air duct. Inside the fresh air duct.

Optionally, the radiator includes a support member and a plurality of fins that are parallel to each other, each of the fins is fixedly connected to the side surface of the support member, and the heat generating member is fixedly connected to the support member. On the sides opposite to the fins, the fins protrude into the fresh air duct from the openings, and the support members are sealingly connected to the openings.

Optionally, the arrangement direction of the fins is parallel to the airflow direction of the fresh air in the fresh air duct.

Optionally, a partition is arranged inside the main body of the outdoor unit, the partition divides the main body of the outdoor unit into a first chamber and a second chamber, and the fan is installed in the first chamber, The second chamber is provided with an electronic control assembly and a compressor;

An air inlet is provided on the side wall of the outdoor unit main body, an air outlet corresponding to the air inlet is arranged on the partition, and the fresh air duct communicates with the air inlet and the air outlet.

Optionally, the fresh air duct includes a first connecting part, a cooling part and a second connecting part which are connected in sequence, the first connecting part is connected with the air outlet, and the second connecting part is connected with the air outlet. The air inlets are communicated with each other, the radiator is located in the cooling part, and the inner diameter of the end of the first connecting part that is far away from the cooling part is larger than the inner diameter of the cooling part, and the second connecting part is far away from the cooling part. The inner diameter at the end of the cooling portion is larger than the inner diameter of the cooling portion.

Optionally, the first connecting portion is smoothly connected to the cooling portion, and the inner diameter of the first connecting portion gradually increases from an end close to the cooling portion to an end close to the air outlet;

The second connecting portion is smoothly connected with the cooling portion, and the inner diameter of the second connecting portion gradually increases from an end close to the cooling portion to an end close to the air inlet.

Optionally, on the longitudinal section of the fresh air duct, the angle α between the outer contour line of the first connecting portion and the extension line of the outer contour line of the cooling portion ranges from 10° to 10°. 80°, the value range of the included angle β between the outer contour line of the second connecting portion and the extension line of the outer contour line of the cooling portion is 10°˜80°.

Optionally, an air intake grill is installed on the outer side wall of the outdoor unit main body at a position relative to the air inlet.

Optionally, the value range of the length L of the fresh air duct is 100-300 mm;

The value range of the cross-sectional area S of the fresh air duct is 1 to 20 cm ²

Implementing the embodiment of the present utility model has the following beneficial effects:

The air conditioner outdoor unit of the present invention comprises an outdoor unit main body, a fan, a fresh air duct, a radiator and a heating element, the fan is arranged inside the outdoor unit main body, and the fresh air duct is installed in the outdoor unit main body and communicates with the outside world On the side of the fan, the radiator is installed in the fresh air duct, and the heating element is fixedly connected to the radiator. In this way, the radiator and the heating element are arranged inside the fresh air duct to realize the independent arrangement of the heating element, which can effectively isolate the heat radiation generated between the heating element and the condenser or compressor, and prevent the heating element from being subjected to heat radiation. Therefore, the efficiency of the radiator in cooling the heating element is improved, and the heat exchange area of the radiator located in the fresh air duct can be correspondingly increased, thereby improving the heat exchange efficiency. The fresh air duct connects the outside and the fan side. When the fan starts to rotate, it can generate negative air pressure in the outdoor unit of the air conditioner, and bring the fresh air outside the main body of the outdoor unit into the fresh air duct, so as to realize the radiator and heating elements inside the fresh air duct. The cooling effect of the air conditioner enables the fresh air with a lower temperature outside the main body of the outdoor unit to cool the heating element and the radiator in the shortest distance, the largest flow rate and the most direct way, thereby ensuring the normal operation of the electric control components of the outdoor unit of the air conditioner. performance and service life. The use of fresh air for heat dissipation can maximize the use of the advantages of the external environment to achieve the best heat dissipation effect, effectively reducing the energy loss of the system to a minimum. The fresh air duct and the electronic control components are isolated from each other, and the fresh air that cools the heating element and the radiator passes through the fresh air duct, so as to avoid dust and harmful substances brought in by the fresh air flow from adhering to the electronic control components, preventing potential safety hazards and improving air conditioning. Reliability of outdoor unit work.

Description of drawings

1 is a schematic structural diagram of the overall fresh air flow direction of an outdoor unit of an air conditioner according to an embodiment of the present invention;

2 is a schematic diagram of the axonometric structure of the outdoor unit of the air conditioner according to the embodiment of the present invention;

3 is a schematic structural diagram of a fresh air duct of an outdoor unit of an air conditioner according to an embodiment of the present invention;

FIG. 4 is a schematic diagram of the matching structure of the fresh air duct and the radiator of the outdoor unit of the air conditioner according to the embodiment of the present invention.

Description of reference numbers:

1. Main body of outdoor unit, 11, first chamber, 12, second chamber, 2, fan, 3, fresh air duct, 31, first connection part, 32, cooling part, 33, second connection part, 4, Radiator, 41, support piece, 42, fin, 5, partition plate, 51, air outlet, 6, compressor, 7, air inlet, 8, air inlet grille.

Detailed ways

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the implementations. example. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. is based on the orientation or positional relationship shown in the accompanying drawings, only In order to facilitate the description of the present invention and simplify the description, it is not indicated or implied that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

1 to 4 , the air conditioner outdoor unit according to the preferred embodiment of the present invention includes an outdoor unit main body 1, a fan 2, a fresh air duct 3, a radiator 4 and a heating element, and the fan 2 is arranged on the outdoor unit Inside the main body 1, the fresh air duct 3 is installed in the outdoor unit main body 1 and communicates with the outside world and the side of the fan 2, the radiator 4 is installed in the fresh air duct 3, and the heating element is connected to the The radiator 4 is fixedly connected.

Based on the above structure, when the outdoor unit of the air conditioner is working, the fan 2 can rotate to form a negative air pressure inside the outdoor unit of the air conditioner, and the fresh air outside the main body 1 of the outdoor unit is brought into the fresh air duct 3, so as to pass the fresh air from the outside to the fresh air. The heating element in the pipe 3 and the radiator 4 are cooled, and the use of fresh air to complete the cooling work can maximize the use of the advantages of the external environment to achieve the best heat dissipation effect. This cooling method is different from refrigerant heat dissipation or system heat dissipation. No loss, effective energy saving. The structure of the radiator 4 and the heating element are completely placed inside the fresh air duct 3, which can increase the heat exchange area to a certain extent, so that the radiator 4 and the heating element can fully contact the fresh air entering the fresh air duct 3, thereby improving the efficiency of the ventilation. heat transfer efficiency. And the independent placement of the heating element and the radiator 4 inside the fresh air duct 3 can isolate the two from the condenser or compressor 6 in the outdoor unit of the air conditioner, thereby preventing the influence of heat radiation. The fresh air with a lower temperature can be unaffected, and the heating element and the radiator 4 can be cooled in the shortest distance, the largest flow rate, and the most direct way, so as to ensure the reliability and service life of the electronic control components, and prevent the internal components of the electronic control components. The temperature continues to rise after the air conditioner works for a long time, so as to avoid burning the internal circuit; on the other hand, the radiator 4 and the heating element are independent of the heat source of the compressor 6 or the condenser, which can improve the heat dissipation efficiency inside the fresh air duct 3, Ensure the reliability of cooling the outdoor unit of the air conditioner. The structure design of the whole air conditioner outdoor unit is very simple. The fresh air duct 3 can effectively isolate the fresh air from the electric control components while realizing the cooling effect of the radiator 4 and the heating element, so as to prevent the fresh air from bringing dust and harmful substances into the air conditioner. Inside the outdoor unit, it is attached to the electronic control components, thereby preventing potential safety hazards and improving the reliability of the entire outdoor unit of the air conditioner.

Wherein, the top of the fresh air duct 3 is provided with an opening, and the radiator 4 extends into the interior of the fresh air duct 3 from the opening, and the radiator 4 is sealed with the fresh air duct 3, and the heating element is located at the top of the fresh air duct 3. 3. When assembling, the opening at the top of the fresh air duct 3 is not only convenient for positioning the fresh air duct 3 in the outdoor unit body 1, but also for the installation of heat dissipation. The radiator 4 is inserted into the fresh air duct 3 from the opening for installation, and the heating element is Connected to the radiator 4, when the radiator 4 is inserted into the fresh air duct 3, the heating element is connected to the top of the radiator 4 and is located on the outside of the fresh air duct 3, the connection structure is simple and the operation is convenient, in the fresh air duct 3. The top of the positioned radiator 4 is sealed with the opening of the fresh air duct 3, thereby ensuring the airtightness of the fresh air duct 3 and preventing the leakage of the fresh air with a lower temperature entering the interior of the fresh air duct 3, thereby ensuring the fresh air and heat dissipation. The full contact of the device 4 improves the heat exchange efficiency. The heat sink 4 includes a support member 41 and a plurality of fins 42 that are parallel to each other. Each fin 42 is vertically and fixedly connected to the side surface of the support member 41, and the heating member is fixedly connected to the support member 41 and the fins 42 opposite to each other. On the side, the fins 42 protrude into the fresh air duct 3 from the opening, and the support 41 is sealed at the opening, the heating element is fixedly connected to the top of the support 41, and the support 41 is arranged at the opening in the horizontal direction. , so that the fresh air duct 3 forms a complete airtight structure, as the main channel for fresh air in and out, this closed channel has better heat dissipation effect than the open channel on the market, and ensures the fresh air volume and flow rate entering the fresh air duct 3. The fins 42 are vertically connected to the bottom of the support member 41, and the heat-generating member is connected to the top of the support member 41, so that the fins 42 and the heat-generating member are arranged on opposite sides of each other through the support member 41, and the heat-dissipating member is located in the fresh air duct 3. Inside, the heating element is located outside the fresh air duct 3, the fins 42 of the radiator 4 can share the heat on the heating element, and the fresh air introduced into the fresh air duct 3 can quickly cool down the heat on each fin 42, Thereby increasing the cooling effect. The arrangement direction of the fins 42 is parallel to the airflow direction of the fresh air in the fresh air duct 3 , and the fins 42 are evenly arranged at equal intervals in the width direction of the fresh air duct 3 , so that the space between each adjacent two fins 42 . The formed gaps can be used for fresh air to pass through, that is, a small fresh air channel is formed between each adjacent two fins 42, thereby greatly improving the heat exchange area of the radiator 4, and effectively ensuring that the fresh air is connected to the fins 42. The heat exchange efficiency of the radiator 4 .

In addition, the interior of the outdoor unit main body 1 is provided with a partition plate 5, and the partition plate 5 divides the interior of the outdoor unit main body 1 into a first chamber 11 and a second chamber 12, the fan 2 is installed in the first chamber 11, and the first chamber 11 is installed. The second chamber 12 is provided with an electric control assembly (not shown in the figure) and the compressor 6 , the fresh air duct 3 is arranged in the second chamber 12 , the side wall of the outdoor unit main body 1 is provided with an air inlet 7 , and the partition plate 5 is provided with an air outlet 51 corresponding to the air inlet 7, the fresh air duct 3 is connected to the air inlet 7 and the air outlet 51, the fresh air duct 3 is arranged in the second chamber 12, and one end of the fresh air duct 3 is connected to the main body 1 of the outdoor unit. The air inlet 7 on the side wall of the outdoor unit is connected, the other end of the fresh air duct 3 extends into the first chamber 11 through the air outlet 7 on the partition 5, and the fresh air duct 3 is located on the top of the main body 1 of the outdoor unit, so that the outdoor The internal structure design of the main body 1 is more compact, and the space utilization rate is higher. The fresh air duct 3 reliably isolates the electronic control components, the compressor 6 from the radiator 4 and the heating element, and can also prevent the outdoor fresh air from being trapped inside the outdoor unit main body 1. The high-temperature components are heated to effectively ensure the heat dissipation effect inside the fresh air duct 3. One end of the fresh air duct 3 is fixedly connected with the air inlet 7, and the other end extends into the first chamber 11 through the air outlet 51, so that the outdoor fresh air can flow rapidly into the fresh air duct 3 by the negative pressure of the rotation of the fan 2 , thereby improving the cooling effect.

Further, the fresh air duct 3 includes a first connecting part 31 , a cooling part 32 and a second connecting part 33 which are connected in sequence, the first connecting part 31 is connected with the air outlet 51 , and the second connecting part 33 is connected with the air inlet 7 . The radiator 4 is located in the cooling part 32, and the inner diameter of the end of the first connection part 31 away from the cooling part 32 is larger than the inner diameter of the cooling part 32, and the end of the second connection part 33 away from the cooling part 32 has an inner diameter. The inner diameter is larger than the inner diameter of the cooling part 32, so that the cross-sectional area of the air inlet end and the air outlet end of the fresh air duct 3 is larger than the cross-sectional area of the cooling part 32, which effectively improves the flow speed of the fresh air in the cooling part 32, thereby improving the cooling effect. . The first connecting portion 31 is fixedly connected to the air outlet 51 , and the second connecting portion 33 is fixedly connected to the air inlet 7 . The fixed connection may be welding, riveting, screw connection or snap connection. It should be noted here that, in this embodiment, the cooling portion 32 has a cuboid structure, the first connecting portion 31 and the cooling portion 32 are connected by a smooth transition, and the second connecting portion 33 and the cooling portion 32 are connected by a smooth transition. The smooth transition can be It is a gradual transition, or an arc transition, which is conducive to the smooth passage of the fresh air through the cooling part 32; the inner diameter of the first connecting part 31 gradually increases from the end close to the cooling part 32 to the end close to the air outlet 51, and the first connecting part 31 gradually increases. The inner diameters of the two connecting parts 33 gradually increase from the end close to the cooling part 32 to the end close to the air inlet 7 , that is, the first connecting part 31 and the second connecting part 33 are both designed as conical structures, so that the air inlet end and The larger cross-sectional area of the air outlet can facilitate the passage of more fresh air, while the smaller cross-sectional area of the cooling part 32 can increase the flow rate of the fresh air inside, thereby facilitating the rapid cooling of the heat on the radiator 4 and the heating element. It can effectively improve the heat dissipation efficiency. However, in other embodiments, the structural shape of the cooling part 32, the structural shape of the first connecting part 31 and the second connecting part 33 are not limited by this embodiment. needs to make an appropriate choice. Referring to FIG. 4, on the longitudinal section of the fresh air duct 3, the angle α between the outer contour line of the first connecting portion 31 and the extension line of the outer contour line of the cooling portion 32 ranges from 10° to 80°, The value range of the angle β between the outer contour line of the second connecting portion 33 and the extension line of the outer contour line of the cooling portion 32 is 10° to 80°, which is beneficial to the input and output of fresh air and increases the intake of fresh air. The flow velocity in the cooling part 32 improves the heat dissipation effect.

Further, an air inlet grille 8 is installed on the outer side wall of the main body 1 of the outdoor unit relative to the air inlet 7, and the air inlet grille 8 can effectively block the air inlet 7, which can ensure the smooth input of fresh air. , it can also prevent the large volume of impurities from entering the fresh air duct 3 through the air inlet 7, and then into the outdoor unit main body 1, preventing pollution to the internal environment of the outdoor unit main body 1 or blocking the fresh air duct 3, ensuring the entire Reliability and safety of structural quality. The air inlet grille 8 is arranged on the handle on the side wall of the main body 1 of the outdoor unit, and is integrated with the handle, which is more convenient for installation and after-sales maintenance, but the installation position of the air inlet grille 8 is not affected by this embodiment. The restriction can also be set at other positions such as the right side or the rear side of the right side panel, the front side of the front panel, the top of the top cover, etc., mainly to ensure that it is connected to the air inlet 7 . The value range of the designed length L of the fresh air duct 3 is 100-300mm, and the designed value range of the cross-sectional area S of the fresh air duct 3 is 1 to 20 cm ² . In this embodiment, the length of the fresh air duct 3 is 250 mm, It can provide sufficient space for the arrangement of the radiator 4 and the heating element, effectively connect the outside with the fan 2 side, and reliably ensure the heat exchange area of the radiator 4 inside the fresh air duct 3, save manufacturing materials and improve heat exchange efficiency. , cost saving and reliable effect.

The air conditioner outdoor unit of the present invention includes an outdoor unit main body 1, a fan 2, a fresh air duct 3, a radiator 4 and a heating element, the fan 2 is arranged inside the outdoor unit main body 1, and the fresh air duct 3 is installed in the The main body 1 of the outdoor unit communicates with the outside and the side of the fan 2 , the radiator 4 is installed in the fresh air duct 3 , and the heating element is fixedly connected to the radiator 4 . In this way, the radiator 4 and the heating element are arranged inside the fresh air duct 3 to realize the independent arrangement of the heating element, which can effectively isolate the heat radiation generated between the heating element and the condenser or compressor 6, and prevent the heating element from being affected by Influence of heat radiation, thereby improving the efficiency of the radiator 4 in cooling the heating element, and the heat exchange area of the radiator 4 located in the fresh air duct 3 can be correspondingly increased, thereby improving the heat exchange efficiency. The fresh air duct 3 is connected to the outside and the side of the fan 2. When the fan 2 starts to rotate, a negative air pressure can be generated in the outdoor unit of the air conditioner, and the fresh air from the outside of the main body 1 of the outdoor unit is brought into the interior of the fresh air duct 3, so as to realize the inside of the fresh air duct 3. The cooling effect of the radiator 4 and the heat-generating parts, so that the fresh air with a lower temperature outside the main body of the outdoor unit 1 can cool the heat-generating parts and the heat-generating parts 4 in the shortest distance, the largest flow rate and the most direct way, so as to ensure the outdoor unit of the air conditioner. The reliability and service life of the normal operation of the electronic control components. The use of fresh air for heat dissipation can maximize the use of the advantages of the external environment to achieve the best heat dissipation effect, effectively reducing the energy loss of the system to a minimum. The fresh air duct 3 and the electronic control components are isolated from each other, and the fresh air that cools the heating element and the radiator 4 passes through the fresh air duct 3, so as to prevent the dust and harmful substances brought in by the fresh air flow from adhering to the electronic control components and prevent potential safety hazards. , Improve the reliability of the outdoor unit of the air conditioner.

It should be understood that the terms "first", "second", etc. are used to describe various information in the present invention, but the information should not be limited to these terms, and these terms are only used to distinguish the same type of information from each other. For example, "first" information may also be referred to as "second" information, and similarly, "second" information may also be referred to as "first" information without departing from the scope of the present invention.

The above is the preferred embodiment of the present invention, it should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and deformations can also be made. These improvements and deformations It is also regarded as the protection scope of the present invention.

Claims (10)

1. The outdoor unit of the air conditioner is characterized by comprising an outdoor unit main body, a fan, a fresh air pipeline, a radiator and a heating piece, wherein the fan is arranged inside the outdoor unit main body, the fresh air pipeline is arranged in the outdoor unit main body and is communicated with the outside and the fan side, the radiator is arranged in the fresh air pipeline, and the heating piece is fixedly connected with the radiator.

2. The outdoor unit of claim 1, wherein an opening is formed at a top of the fresh air duct, the heat sink extends into the fresh air duct from the opening, the heat sink is hermetically connected to the fresh air duct, and the heat generating member is disposed at the top of the fresh air duct.

3. The outdoor unit of claim 2, wherein the heat sink includes a support member and a plurality of fins parallel to each other, the fins are fixedly coupled to side surfaces of the support member, the heat generating member is fixedly coupled to side surfaces of the support member opposite to the fins, the fins extend into the fresh air duct from the opening, and the support member is sealingly coupled to the opening.

4. The outdoor unit of claim 3, wherein the fins are arranged in a direction parallel to an air flow direction of fresh air in the fresh air duct.

5. The outdoor unit of any one of claims 1 to 4, wherein a partition is provided inside the outdoor unit main body, the partition dividing the inside of the outdoor unit main body into a first chamber in which the fan is installed and a second chamber in which an electric control unit and a compressor are provided;

an air inlet is formed in the side wall of the outdoor unit main body, an air outlet corresponding to the air inlet is formed in the partition plate, and the fresh air pipeline is communicated with the air inlet and the air outlet.

6. The outdoor unit of claim 5, wherein the fresh air duct includes a first connection portion, a cooling portion, and a second connection portion sequentially connected to each other, the first connection portion is connected to the air outlet, the second connection portion is connected to the air inlet, the heat sink is disposed in the cooling portion, an inner diameter of an end portion of the first connection portion, which is far from the cooling portion, is larger than an inner diameter of the cooling portion, and an inner diameter of an end portion of the second connection portion, which is far from the cooling portion, is larger than an inner diameter of the cooling portion.

7. The outdoor unit of claim 6, wherein the first connecting portion is smoothly transitionally connected to the cooling portion, and an inner diameter of the first connecting portion is gradually increased from an end near the cooling portion to an end near the outlet;

the second connecting portion with the cooling portion smooth transition connects, just the internal diameter of second connecting portion is for following be close to the one end of cooling portion is to being close to the one end of air intake increases gradually.

8. The outdoor unit of claim 7, wherein an angle α between the outer contour line of the first connecting portion and the extension line of the outer contour line of the cooling portion ranges from 10 ° to 80 °, and an angle β between the outer contour line of the second connecting portion and the extension line of the outer contour line of the cooling portion ranges from 10 ° to 80 °, in a longitudinal cross section of the fresh air duct.

9. The outdoor unit of claim 5, wherein an air inlet grill is installed on an outer side wall of the outdoor unit main body at a position opposite to the air inlet.

10. The outdoor unit of any one of claims 1 to 4, wherein a length L of the fresh air duct has a value ranging from 100 to 300 mm;

the value range of the cross section area S of the fresh air pipeline is 1-20 cm²。

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