CN115493212A - Air conditioner outer unit casing and air conditioner outer unit - Google Patents

Air conditioner outer unit casing and air conditioner outer unit Download PDF

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Publication number
CN115493212A
CN115493212A CN202110667431.3A CN202110667431A CN115493212A CN 115493212 A CN115493212 A CN 115493212A CN 202110667431 A CN202110667431 A CN 202110667431A CN 115493212 A CN115493212 A CN 115493212A
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CN
China
Prior art keywords
air
guiding ring
wind
air conditioner
flow
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Pending
Application number
CN202110667431.3A
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Chinese (zh)
Inventor
木田琢己
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Aux Air Conditioning Co Ltd
Ningbo Aux Electric Co Ltd
Original Assignee
Aux Air Conditioning Co Ltd
Ningbo Aux Electric Co Ltd
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Application filed by Aux Air Conditioning Co Ltd, Ningbo Aux Electric Co Ltd filed Critical Aux Air Conditioning Co Ltd
Priority to CN202110667431.3A priority Critical patent/CN115493212A/en
Publication of CN115493212A publication Critical patent/CN115493212A/en
Pending legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
    • F24F1/56—Casing or covers of separate outdoor units, e.g. fan guards
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
    • F24F1/40—Vibration or noise prevention at outdoor units
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
    • F24F1/46—Component arrangements in separate outdoor units
    • F24F1/48—Component arrangements in separate outdoor units characterised by air airflow, e.g. inlet or outlet airflow
    • F24F1/50—Component arrangements in separate outdoor units characterised by air airflow, e.g. inlet or outlet airflow with outlet air in upward direction

Abstract

The invention provides an air conditioner outdoor unit casing and an air conditioner outdoor unit, and belongs to the technical field of air conditioners. The second air guide ring can effectively restrain radial flow components in the air flow flowing out of the first air guide ring so as to restrain turbulence of the air flow, and therefore noise generated when the air flow flows out of the air outlet is effectively reduced, and noise generated when the air conditioner external unit operates is further effectively reduced. The air conditioner external unit adopts the air conditioner external unit casing, so that the air conditioner external unit casing has the characteristic of low operation noise.

Description

Air conditioner outer unit casing and air conditioner outer unit
Technical Field
The invention relates to the technical field of air conditioners, in particular to an air conditioner outer unit casing and an air conditioner outer unit.
Background
Air conditioners, air conditioners (Air conditioners), are devices that manually adjust and control parameters such as temperature, humidity, and flow rate of ambient Air in a building or structure, and generally include an Air Conditioner external unit and at least one Air Conditioner internal unit.
However, the air conditioner external unit in the related art, especially the air conditioner external unit adopting the top-outlet structure, generally has a problem of large noise during operation.
Disclosure of Invention
The invention improves the problem that the noise is high when the air conditioner external unit in the related art operates.
In order to improve the above-mentioned problems,
in a first aspect, the present invention provides an air conditioner external unit casing, including:
the side wall of the shell is provided with an air inlet, and the top wall of the shell is provided with an air outlet;
the first air guide ring is arranged at the position, corresponding to the air outlet, of the shell, and one end, far away from the shell, of the first air guide ring is a first air outlet end;
the second air guide ring is arranged on the shell and surrounds the outer side of the first air guide ring, one end, far away from the shell, of the second air guide ring is a second air outlet end, and the second air outlet end is higher than the first air outlet end.
According to the air conditioner external unit casing, the second air guide ring is additionally arranged on the outer side of the first air guide ring, the top end (namely the second air outlet end) of the second air guide ring is higher than the top end (namely the first air outlet end) of the first air guide ring, the flowing distance of air flow at the air outlet can be increased, after the air flow flows out of the first air guide ring, the air flow can also flow out of the second air guide ring after being attached to the inner wall of the second air guide ring for a distance, and in the process that the air flow flows along the second air guide ring, the second air guide ring can effectively inhibit radial flow components in the air flow to inhibit the turbulence of the air flow, so that the noise generated when the air flow flows out of the air outlet is effectively reduced, and the noise generated when the air conditioner external unit operates is further effectively reduced.
In an alternative embodiment, the axis of the second wind-guiding ring is located on a side of the axis of the first wind-guiding ring away from the wind inlet.
In an alternative embodiment, the axis of the second wind-guiding ring is located between the axis of the first wind-guiding ring and a position of the casing without the wind inlet.
In an optional embodiment, the first air outlet end is disposed obliquely with respect to a horizontal plane, and a portion of the first air outlet end, which is far away from the air inlet, is higher than a portion of the first air outlet end, which is close to the air inlet.
In an alternative embodiment, the second air guiding ring and the first air guiding ring are arranged at an interval so that a relaxation space for relaxing the turbulent air flow flowing out of the first air guiding ring is formed therebetween.
In an alternative embodiment, the first wind-guiding ring and the second wind-guiding ring are both connected to the top wall.
In an alternative embodiment, the first wind-guiding ring is integrally formed with the top wall.
In an alternative embodiment, the first wind-guiding ring is connected with the top wall through an arc-shaped partition plate.
In an alternative embodiment, the second wind-guiding ring is detachably connected to the top wall.
In a second aspect, the present invention provides an outdoor unit of an air conditioner, including the casing of the outdoor unit of an air conditioner in any one of the foregoing embodiments.
The air conditioner external unit has the characteristic of low operation noise due to the adoption of the air conditioner external unit casing.
Drawings
Fig. 1 is a sectional view of an air conditioner outdoor unit according to a first embodiment of the present invention;
fig. 2 is a schematic structural view of an air conditioner external unit according to a first embodiment of the present invention;
fig. 3 is a schematic airflow diagram of an outdoor unit of an air conditioner according to a first embodiment of the present invention;
fig. 4 is a sectional view of an outdoor unit of an air conditioner according to a second embodiment of the present invention;
fig. 5 is a sectional view of an outdoor unit for an air conditioner according to a third embodiment of the present invention.
Description of reference numerals:
10-an air conditioner outdoor unit; 100-air conditioner external unit casing; 110-a housing; 112-an air inlet; 114-an air outlet; 116-a side wall; 118-a top wall; 119-arc partition board; 120-a first wind-guiding ring; 122-a first air outlet end; 130-a second wind-guiding ring; 140-a relief space; 132-a second air outlet end; 200-axial flow fan; 210-a motor; 220-a hub; 230-a blade; 300-a heat exchanger; 400-a machine room; 500-compressor.
Detailed Description
Air conditioners (Air conditioners) are devices that manually adjust and control parameters such as temperature, humidity, and flow rate of ambient Air in a building or structure, and generally include an Air Conditioner external unit and at least one Air Conditioner internal unit.
In the related art, an air conditioner external unit adopting a top-outlet structure generally has an air inlet on a side wall, an air outlet on a top wall, and an air guide ring at a position corresponding to the air outlet. A flow channel is formed between the air inlet and the air outlet, and under the driving of the axial flow fan, airflow enters from the air inlet, flows through the flow channel, flows out from the air outlet, and enters into external air after being attached to the inner wall of the air guide ring for a certain distance.
Because the air-conditioning fan is also internally provided with components such as a compressor and the like, and the components occupy the space between the air inlet and the air outlet, so that a flow channel between the air inlet and the air outlet is shielded, the flow channel is irregular in bending, the ventilation area is reduced, and the wind resistance is increased, so that the axial flow fan needs to operate under the condition of high static pressure (the static pressure refers to the pressure for overcoming the resistance of a pipeline, and the static pressure is more than 100Pa and is called high static pressure). Under the condition of high static pressure, the flow velocity of the airflow at the outer periphery of the axial flow fan is higher than that of the airflow at the inner periphery, so that turbulence is generated to form turbulence (the turbulence is a flow state of the airflow, the airflow irregularly flows, and when a partial velocity vertical to the axial direction of the flow pipe is generated, the flow state is called turbulence, when the turbulence is formed, radial flow components are contained in the airflow except for an axial flow part, the larger the proportion of the radial flow components is, the more serious the airflow turbulence is, the turbulence collides with the inner wall of the air guide ring after flowing out of the air outlet, and more turbulent turbulence is formed to increase noise. When the air flows out of the air guide ring and enters the outside air, the turbulent flow velocity is rapidly reduced to cause pressure loss, thereby further increasing turbulence and noise.
In view of the above situation, an embodiment of the present invention provides an air conditioner outdoor unit, where an air outlet at a top of a casing of the air conditioner outdoor unit employs a dual air guiding ring (a first air guiding ring and a second air guiding ring) structure, the second air guiding ring surrounds an outer side of the first air guiding ring, and a top end of the second air guiding ring is higher than a top end of the first air guiding ring, so that a flowing distance of an air flow at the air outlet can be increased, and after the air flow flows out from the first air guiding ring, the air flow also adheres to an inner wall of the second air guiding ring for a certain distance and then flows out from the second air guiding ring.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
The first embodiment:
referring to fig. 1 and 2, an outdoor unit 10 of an air conditioner according to an embodiment of the present invention includes an outdoor unit casing 100, and an axial flow fan 200, a heat exchanger 300, and a machine room 400 disposed in the outdoor unit casing 100.
The casing 100 of the outdoor unit of the air conditioner includes a casing 110, a first wind guiding ring 120 and a second wind guiding ring 130. The side walls 116 of the housing 110 are provided with air intakes 112 and the top wall 118 of the housing 110 is provided with air outlets 114. The first wind guiding ring 120 is disposed at a position of the casing 110 corresponding to the wind outlet 114, and an end of the first wind guiding ring 120 away from the casing 110 is a first wind outlet end 122. The second wind-guiding ring 130 is disposed on the casing 110 and surrounds the outer side of the first wind-guiding ring 120. One end of the second wind guiding ring 130 away from the casing 110 is a second wind outlet end 132, and the second wind outlet end 132 is higher than the first wind outlet end 122.
The second wind-guiding ring 130 is additionally arranged on the outer side of the first wind-guiding ring 120, and the top end (i.e., the second wind-out end 132) of the second wind-guiding ring 130 is higher than the top end (i.e., the first wind-out end 122) of the first wind-guiding ring 120, so that the flowing distance of the airflow at the air outlet 114 can be increased, after the airflow flows out from the first wind-guiding ring 120, the airflow is attached to the inner wall of the second wind-guiding ring 130 for a certain distance and then flows out from the second wind-guiding ring 130, and in the process that the airflow flows along the inner wall of the second wind-guiding ring 130, the second wind-guiding ring 130 can effectively inhibit radial flow components in the airflow to inhibit the turbulence of the airflow, so that the noise generated when the airflow flows out of the air outlet 114 is effectively reduced, and the noise generated when the air conditioner outdoor unit 10 operates is effectively reduced.
In detail, the outlet mouth 114 is substantially circular and is located substantially in the central region of the top wall 118, the axis of the outlet mouth 114 extending substantially in a vertical direction. A flow passage for air flow is formed between the air outlet 114 and the air inlet 112, and the flow passage is located inside the casing 100 of the outdoor unit of the air conditioner.
The first air guiding ring 120 is substantially cylindrical and has an axis coinciding with an axis of the air outlet 114. First wind-guiding ring 120 is connected to top wall 118 of casing 110, and in detail, first wind-guiding ring 120 is integrally formed with top wall 118 of casing 110 for processing. Further, the first wind guiding ring 120 is connected to the top wall 118 through the arc-shaped partition 119, and the first wind guiding ring 120, the arc-shaped partition 119 and the top wall 118 are integrally formed. The arc-shaped partition 119 is annular and serves as a transition structure at the joint of the first wind-guiding ring 120 and the top wall 118, so that the mechanical property of the first wind-guiding ring 120 and the top wall 118 after connection can be optimized.
The second wind-guiding ring 130 is substantially cylindrical and has a larger diameter than the first wind-guiding ring 120. The second air guide ring 130 and the first air guide ring 120 are spaced apart from each other to form a moderating space 140 therebetween for moderating the turbulent air flow flowing out of the first air guide ring 120. The moderating space 140 can effectively moderate the turbulence of the air flow flowing out of the first air guiding ring 120, effectively suppress turbulence, and reduce the proportion of radial flow components in the air flow, and after the air flow moderated by the moderating space 140 is attached to the inner wall of the second air guiding ring 130, the turbulence of the air flow is further reduced, thereby reducing noise generated by turbulence. Also, the moderating space 140 may buffer pressure pulsation of the turbulent flow, enhancing noise attenuation of the turbulent flow, thereby further reducing the generation of noise.
The second wind-guiding ring 130 is connected to the top wall 118, and further, the second wind-guiding ring 130 is detachably connected to the top wall 118. The second wind-guiding ring 130 may be connected to the top wall 118 in different connection manners as required, in this embodiment, the second wind-guiding ring 130 may be connected to the top wall 118 by screws, a plurality of screws are arranged at intervals in the circumferential direction of the second wind-guiding ring 130, and each screw penetrates through the second wind-guiding ring 130 and the top wall 118 in sequence, so as to connect the second wind-guiding ring 130 to the top wall 118. In other embodiments, the second wind guiding ring 130 can be connected to the top wall 118 by a snap connection or a screw connection.
The axial flow fan 200 is disposed inside the casing 110 at a position corresponding to the air outlet 114. The axial flow fan 200 includes a motor 210, a hub 220 and a plurality of blades 230, the motor 210 is vertically disposed, and a rotation shaft axis of the motor 210 extends along a vertical direction and coincides with an axis of the air outlet 114 or the first air guiding ring 120. The hub 220 is sleeved on the rotating shaft of the motor 210, and the plurality of blades 230 are uniformly arranged on the outer circumferential surface of the hub 220 at intervals along the circumferential direction of the hub 220.
The heat exchanger 300 is disposed on an inner wall of the housing 110 at a position corresponding to the air inlet 112, and is used for exchanging heat (heating or cooling) for the air flow entering the housing 110 from the air inlet 112. The machine room 400 is disposed on an inner wall of the housing 110 and includes a compressor 500, an electronic control box (not shown), and the like.
In this embodiment, the air inlet 112 is disposed only on one side of the side wall 116 of the housing 110, so the heat exchanger 300 is also disposed only on one side of the interior of the housing 110, and the machine room 400 is disposed on the other side of the interior of the housing 110 and is opposite to the heat exchanger 300 or the air inlet 112. In other embodiments, the air inlet 112 may be disposed on multiple sides of the side wall 116 of the casing 110, and accordingly, the heat exchanger 300 may also be disposed on multiple sides inside the casing 110 to form a ring structure with a notch, in which case the machine room 400 is disposed inside the casing 110 at a position corresponding to the notch.
The working principle and the process of the air conditioner outdoor unit 10 are as follows:
referring to fig. 1 again, when the air conditioner external unit 10 is required to operate, the axial flow fan 200 is started, specifically, the rotating shaft of the motor 210 starts to rotate, so as to drive the hub 220 and the plurality of blades 230 on the hub 220 to rotate, so that negative pressure is generated below the axial flow fan 200, and positive pressure is generated above the axial flow fan, thereby providing power for the flow of the air flow. Under the driving of the axial flow fan 200, the external air may form an airflow, which enters the inside of the casing 110 from the air inlet 112 on the side wall 116 of the casing 110, and enters the flow channel in the casing 110 after flowing through the heat exchanger 300, and in the process of flowing through the heat exchanger 300, the airflow may exchange heat with the refrigerant discharged from the compressor 500 and flowing through the heat exchanger 300, so as to be heated to raise the temperature (when the air conditioner operates in a cooling mode) or cooled to lower the temperature (when the air conditioner operates in a heating mode), then the airflow after heat exchange flows to the air outlet 114 along the flow channel, then flows out from the first air outlet 122 of the first air guide ring 120 after attaching to the inner wall of the first air guide ring 120 for a distance, then passes through the relaxation space 140 and then attaches to the inner wall of the second air guide ring 130 for a distance, and finally flows out from the second air outlet 132 of the second air guide ring 130 to enter the external air.
Referring to fig. 3, during the operation of the air conditioner external unit 10, the airflow flowing at a high speed at the outer circumference of the axial flow fan 200 is disturbed to form a turbulent flow B, which includes a radial flow component having a serious disturbance in addition to an axial flow component (i.e., a component flowing along the axial direction of the first wind-guiding ring 120 or the second wind-guiding ring 130). When the turbulent flow B flows out from the top ends of the plurality of blades 230, the turbulent flow B is temporarily attached to the inner wall of the first wind-guiding ring 120 and then flows out from the first wind-outlet end 122 of the first wind-guiding ring 120. Without the second wind-guiding ring 130 and the moderating space 140 between the second wind-guiding ring 130 and the first wind-guiding ring 120, the turbulent flow B containing the severely turbulent radial flow component directly enters the outside air, and generates a large noise. In the solution provided by the embodiment of the present invention, by providing the second wind-guiding ring 130 and the buffering space 140, the turbulent flow B flowing out from the first wind-out end 122 of the first wind-guiding ring 120 flows into the buffering space 140 first, then adheres to the inner wall of the second wind-guiding ring 130, and finally flows into the external air.
The moderating space 140 can effectively moderate the degree of turbulence of the turbulent flow B, effectively suppress the increase in the turbulent flow B, so that the radial flow component ratio in the turbulent flow B is reduced, and the moderating space 140 can also buffer the pressure pulsation of the turbulent flow B, enhance the noise attenuation of the turbulent flow B, and further reduce the noise. When the turbulent flow B relaxed by the relaxation space 140 adheres to the inner wall of the second air guiding ring 130, the diameter of the second air guiding ring 130 is larger than the diameter of the first air guiding ring 120 and surrounds the outer side of the first air guiding ring 120, so that the second air guiding ring 130 can suppress the radial flow component in the turbulent flow B, the ratio of the radial flow component is reduced, the turbulence degree of the turbulent flow B is further reduced, and the noise generated by the flow is further reduced.
In addition, since the cross-sectional area of the second wind-guiding ring 130 (i.e., the projected area of the second wind-guiding ring 130 on the plane perpendicular to the axis of the second wind-guiding ring 130) is slightly larger than the cross-sectional area of the first wind-guiding ring 120 (i.e., the projected area of the first wind-guiding ring 120 on the plane perpendicular to the axis of the first wind-guiding ring 120), the cross-sectional area of the flow passage of the turbulent flow B is gradually enlarged in the process of flowing from the first wind-guiding ring 120 to the second wind-guiding ring 130, and accordingly, the flow velocity of the turbulent flow B is gradually reduced, so that the static pressure characteristic is improved, and the air blowing performance is also improved.
In summary, in the casing 100 of the outdoor unit 10 of the air conditioner, the second air-guiding ring 130 is additionally disposed on the outer side of the first air-guiding ring 120, and the second air-outlet end 132 is higher than the first air-outlet end 122, so that the flowing distance of the air flow at the air outlet 114 can be effectively increased, after the air flow flows out from the first air-guiding ring 120, the air flow can also flow out from the second air-guiding ring 130 after being attached to the inner wall of the second air-guiding ring 130 for a certain distance, and in the process of flowing along the second air-guiding ring 130, the second air-guiding ring 130 can effectively suppress radial flow components in the air flow to improve the turbulence of the air flow, thereby effectively reducing the noise generated when the air flow flows out of the air outlet 114, and further effectively reducing the noise generated when the outdoor unit 10 of the air conditioner operates.
Finally, the outdoor air conditioner casing 100 of the present embodiment may be applied to other outdoor air conditioners 10 besides the outdoor air conditioner 10 of the present embodiment.
Second embodiment:
referring to fig. 4, an air conditioner outdoor unit 10 according to an embodiment of the present invention has substantially the same overall structure, operation principle and technical effect as the air conditioner outdoor unit 10 according to the first embodiment, except for the relative positions of the second wind guiding ring 130 and the first wind guiding ring 120.
In this embodiment, the axis L2 of the second wind-guiding ring 130 is located on a side of the axis L1 of the first wind-guiding ring 120 away from the air inlet 112, that is, the axis L2 of the second wind-guiding ring 130 is offset by a preset distance S in a direction away from the air inlet 112 or in a direction close to the machine room 400 relative to the axis L1 of the first wind-guiding ring 120.
Since the heat exchanger 300 is provided on one side and the machine chamber 400 is provided on the other side in the casing 110, the air flow C flowing through the flow path close to the heat exchanger 300 has a relatively short flow path length, so that the ventilation resistance is relatively small, and the axial flow component of the corresponding portion in the axial flow fan 200 is large and the circumferential component (i.e., the component flowing in the circumferential direction of the first air guide ring 120 or the second air guide ring 130) is small, so that the axial flow component of the air flow flowing out of the axial flow fan 200 is also large, and the air blowing efficiency is high. In contrast, the airflow D flowing through the flow path far from the heat exchanger 300 or near the machine room 400 has a relatively large ventilation resistance due to a relatively long length of the flow path, and the axial flow component is small and the circumferential component is large at the corresponding portion in the axial flow fan 200. Therefore, the airflow flowing out of the axial fan 200 also has a large circumferential flow component, and the air blowing efficiency is low.
In the air conditioner outdoor unit 10 provided in this embodiment, the axis L2 of the second air guiding ring 130 is offset by the preset distance S in the direction away from the heat exchanger 300 or in the direction close to the machine chamber 400, relative to the axis L1 of the first air guiding ring 120, so that the difference between the air supply efficiencies of the two flow channels can be effectively reduced, the air supply efficiencies of the two flow channels are uniform, and the air supply effect of the whole air conditioner outdoor unit 10 is improved. The principle is as follows:
setting the radius of the first air guiding ring 120 as R1 and the radius of the second air guiding ring 130 as R2, the cross-sectional width expansion rate TA1 of the air guiding structure (formed by the first air guiding ring 120 and the second air guiding ring 130 together) on the side where the air flow C flowing in the flow channel close to the heat exchanger 300 with high air supply efficiency is defined as:
TA1＝(R2－S)/R1；
the cross-sectional width expansion rate TA2 of the air guide structure on the side where the air flow D flowing in the flow passage far from the heat exchanger 300 or near the machine room 400, in which the air blowing efficiency is low, is defined as:
TA2＝(R2+S)/R1；
as is clear from the above two formulas, the cross-sectional width expansion rate TA2 of the air guide structure on the side of the air flow D having low air blowing efficiency flowing through the flow passage far from the heat exchanger 300 or near the machine room 400 is greater than the cross-sectional width expansion rate TA1 of the air guide structure of the air flow C having high air blowing efficiency flowing through the flow passage near the heat exchanger 300.
Generally, the larger the expansion ratio of the cross-sectional area of the air guide structure (proportional to the square of the expansion ratio TA1 of the cross-sectional width of the air guide structure) is on the air outlet side (i.e., above) of the axial flow fan 200, the higher the air blowing efficiency is. In the air conditioner external unit 10 provided in this embodiment, the expansion rate of the air duct area of the air guiding structure (approximately equal to the expansion rate of the cross-sectional area of the air guiding structure) is adjusted, and when there is partial imbalance of the wind resistance at the air inlet side (i.e., below) of the axial flow fan 200, the air outlet loss of the airflow D flowing through the flow passage far from the heat exchanger 300 or near the mechanical chamber 400 can be effectively reduced by increasing the expansion rate of the air duct area of the air guiding structure corresponding to the flow passage with higher wind resistance (i.e., the flow passage where the airflow D is located), so as to increase the air supply efficiency of the airflow D flowing through the flow passage far from the heat exchanger 300 or near the mechanical chamber 400, which has relatively lower air supply efficiency, thereby making the air supply efficiency of the airflow (including the airflow C and the airflow D) flowing through each flow passage in the casing 110 more uniform, further optimizing the air outlet effect, and reducing air outlet noise.
It should be noted that, if the air inlet 112 is disposed on multiple sides of the side wall 116 of the casing 110, and the heat exchanger 300 is also disposed on multiple sides inside the casing 110 to form a ring-shaped structure with a notch, the axis L2 of the second wind guiding ring 130 may be located between the axis L1 of the first wind guiding ring 120 and a portion of the casing 110 without the air inlet 112.
The third embodiment:
referring to fig. 5, an embodiment of the present invention provides an air conditioner external unit 10, which has substantially the same overall structure, operation principle, and technical effects as the air conditioner external unit 10 provided in the first embodiment, except for the structural configuration of the first air outlet 122.
In this embodiment, the first air outlet end 122 is disposed to be inclined with respect to a horizontal plane, and a portion of the first air outlet end 122 far from the air inlet 112 is higher than a portion of the first air outlet end 122 near the air inlet 112, that is, the first air outlet end 122 is inclined with respect to the horizontal plane in a direction far from the air inlet 112 or near the machine room 400.
Since the heat exchanger 300 is provided on one side in the casing 110 and the machine chamber 400 is provided on the other side opposite to the one side, the air flow E flowing in the flow path close to the heat exchanger 300 has a relatively short flow path length, so that the ventilation resistance is relatively small, and the axial flow component of the corresponding portion in the axial flow fan 200 is large and the circumferential component is small, so that the axial flow component of the air flow flowing out of the axial flow fan 200 is also large, and the air blowing efficiency is high. In contrast, the airflow F flowing through the flow path far from the heat exchanger 300 or near the machine room 400 has a relatively large ventilation resistance due to a relatively long length of the flow path, and the axial flow component is small and the circumferential component is large at the corresponding portion in the axial flow fan 200. Therefore, the circumferential flow component of the air flow flowing out from the axial fan 200 is also large, and the air blowing efficiency is low.
In the air conditioner external unit 10 provided in this embodiment, the first air outlet end 122 of the first air guiding ring 120 is obliquely disposed, and the side thereof away from the air inlet 112 is higher than the side thereof close to the air inlet 112, so that the difference between the air supply efficiencies of the two flow channels can be effectively reduced, the air supply efficiencies of the two flow channels are uniformized, and the air supply effect is improved. The principle is as follows:
the height of the portion of the first air outlet end 122 close to the heat exchanger 300 is set to RH1, the height of the portion of the first air outlet end 122 far from the heat exchanger 300 or close to the machine room 400 is set to RH2, and the relationship between RH1 and RH2 is as follows: RH1 < RH2, that is, the height of the portion of the first wind outlet end 122 close to the heat exchanger 300 is less than the height of the portion of the first wind outlet end 122 far from the heat exchanger 300 or close to the machine room 400. Correspondingly, in the portion of the first air outlet end 122 close to the heat exchanger 300, the overlapping size of the blade 230 of the axial flow fan 200 and the first air guiding ring 120 is also RH1, and in the portion of the first air outlet end 122 far from the heat exchanger 300 or close to the machine room 400, the overlapping size of the blade 230 of the axial flow fan 200 and the first air guiding ring 120 is RH2.
Generally, when the wind resistance of the flow channel on the air inlet side of the axial flow fan 200 is high, the larger the overlapping size between the first wind guiding ring 120 and the blade 230 of the axial flow fan 200 is, the higher the static pressure is, and conversely, when the wind resistance of the flow channel on the air inlet side of the axial flow fan 200 is low, the larger the overlapping size between the first wind guiding ring 120 and the blade 230 is, the more the gas turbulence is caused by the mutual interference between the tip of the blade 230 and the first wind outlet end 122 of the first wind guiding ring 120.
Therefore, in the air conditioner external unit 10 provided in this embodiment, when there is an imbalance of wind resistance on the air intake side of the axial flow fan 200, the overlapping size of the first wind guiding ring 120 and the axial flow fan 200 is enlarged by increasing the height of the portion of the first wind guiding ring 120 corresponding to the flow channel with high wind resistance (i.e., the flow channel where the airflow F is located), so that the air supply efficiency can be effectively prevented from deteriorating. By reducing the height of the second air guiding ring 130 at the position corresponding to the flow channel with low wind resistance (i.e., the flow channel where the air flow E is located), the turbulence caused by the interference between the outer circumference of the blades 230 of the axial flow fan 200 and the inner wall of the first air guiding ring 120 can be reduced, thereby reducing the turbulence degree of the air flow.
Finally, it should be noted that the second embodiment and the third embodiment may be combined, that is, the second wind guiding ring 130 is disposed in an offset manner with respect to the first wind guiding ring 120 while the first wind outlet end 122 of the first wind guiding ring 120 is disposed in an inclined manner, so that turbulence of the airflow can be more effectively suppressed, and noise of the airflow flowing out of the casing 110 can be reduced.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.

Claims (10)

1. An air conditioner external unit casing (100), comprising:
the air conditioner comprises a shell (110), wherein an air inlet (112) is formed in a side wall (116) of the shell (110), and an air outlet (114) is formed in a top wall (118) of the shell (110);
the first air guiding ring (120), the first air guiding ring (120) is arranged at a position of the shell (110) corresponding to the air outlet (114), and one end of the first air guiding ring (120) far away from the shell (110) is a first air outlet end (122);
the second air guiding ring (130) is arranged on the shell (110) and surrounds the outer side of the first air guiding ring (120), one end, far away from the shell (110), of the second air guiding ring (130) is a second air outlet end (132), and the second air outlet end (132) is higher than the first air outlet end (122).
2. The outdoor unit casing (100) of an air conditioner according to claim 1, wherein the axis of the second wind guiding ring (130) is located on a side of the axis of the first wind guiding ring (120) away from the wind inlet (112).
3. The outdoor unit casing (100) of an air conditioner according to claim 1, wherein the axis of the second wind guiding ring (130) is located between the axis of the first wind guiding ring (120) and a portion of the casing (110) without the wind inlet (112).
4. The outdoor unit casing (100) of claim 1, wherein the first air outlet end (122) is disposed obliquely with respect to a horizontal plane, and a portion of the first air outlet end (122) away from the air inlet (112) is higher than a portion of the first air outlet end (122) close to the air inlet (112).
5. The outdoor unit casing (100) of an air conditioner according to claim 1, wherein the second air guiding ring (130) is spaced apart from the first air guiding ring (120) to form a moderating space (140) therebetween for moderating the turbulent air flowing out of the first air guiding ring (120).
6. The outdoor unit casing (100) of air conditioner according to any one of claims 1 to 5, wherein the first wind-guiding ring (120) and the second wind-guiding ring (130) are both connected to the top wall (118).
7. The outdoor unit casing (100) of an air conditioner according to claim 6, wherein the first wind guide ring (120) is integrally formed with the top wall (118).
8. The outdoor unit casing (100) of an air conditioner according to claim 6, wherein the first wind guide ring (120) is connected to the top wall (118) by an arc-shaped partition (119).
9. The outdoor unit casing (100) of air conditioner according to claim 6, wherein the second wind guide ring (130) is detachably attached to the top wall (118).
10. An outdoor unit (10) of an air conditioner, comprising the casing (100) of any one of claims 1 to 9.
CN202110667431.3A 2021-06-17 2021-06-17 Air conditioner outer unit casing and air conditioner outer unit Pending CN115493212A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110667431.3A CN115493212A (en) 2021-06-17 2021-06-17 Air conditioner outer unit casing and air conditioner outer unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110667431.3A CN115493212A (en) 2021-06-17 2021-06-17 Air conditioner outer unit casing and air conditioner outer unit

Publications (1)

Publication Number Publication Date
CN115493212A true CN115493212A (en) 2022-12-20

Family

ID=84464172

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110667431.3A Pending CN115493212A (en) 2021-06-17 2021-06-17 Air conditioner outer unit casing and air conditioner outer unit

Country Status (1)

Country Link
CN (1) CN115493212A (en)

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