Air duct assembly and cabinet air conditioner

Abstract

The present application relates to air duct assembly and air conditioner cabinet. Air duct assembly includes: heat exchanger; Fan assembly, fan assembly includes air duct shell located at the rear side of heat exchanger and fan arranged in air duct shell, air duct shell is provided with left suction air inlet and right suction air inlet respectively located at the left and right sides of fan; Fan assembly further includes left air deflector and right air deflector, left air deflector is located at the left side of left suction air inlet, and right air deflector is located at the right side of right suction air inlet; Wherein, external airflow is guided to left suction air inlet by left air deflector and right suction air inlet by right air deflector under the action of centrifugal force generated by fan rotation after heat exchange by heat exchanger. Fan assembly of the present application forms left and right double suction, cooperates with left air deflector and right air deflector, avoids that low pressure area generated by fan inlet directly acts on part of heat exchanger surface, and then promotes wind speed distribution uniformity of entire heat exchanger surface, increases heat exchange area, and greatly improves heat exchange efficiency.

Description

Technical Field

[0001] This invention relates to the field of air conditioning technology, and in particular to a fan assembly and an air conditioning unit. Background Technology

[0002] The heat exchange efficiency of a heat exchanger is one of the important factors affecting the cooling / heating effect and operating energy consumption of an air conditioner. Uniform airflow velocity distribution throughout the heat exchanger is key to enhancing heat exchange efficiency. Currently, the centrifugal fan intake in vertical air conditioners is directly facing the heat exchanger. Figure 1 As shown), the low-pressure area at the centrifugal fan inlet will directly affect the middle area of ​​the heat exchanger. Figure 2 As shown), this will cause uneven distribution of the windward velocity in the heat exchanger. Figure 3 As shown in the figure, this leads to low heat exchange efficiency in the heat exchanger. To solve this problem, traditional methods include using a rectifier structure to split the airflow, making the airflow velocity distribution in the heat exchanger uniform, or adjusting the refrigerant flow rate in different flow paths of the heat exchanger to improve the heat exchanger efficiency. However, the rectifier structure increases the duct resistance, resulting in a loss of the air conditioner's total air volume, and adjusting the refrigerant flow rate in different flow paths of the heat exchanger cannot fully utilize the heat exchanger's heat exchange performance. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a fan assembly and an air conditioning unit.

[0004] This invention provides a duct assembly, comprising:

[0005] The outer casing is equipped with a rear air inlet and upper and lower air outlets;

[0006] A fan assembly is disposed within the housing. The fan assembly includes a duct housing and a centrifugal fan unit disposed within the duct housing. The rotation axis of the centrifugal fan unit is perpendicular to the height direction of the housing. The duct housing is provided with a left air intake and a right air intake located on the left and right sides of the fan, respectively.

[0007] The heat exchanger is disposed between the outer casing and the duct casing, opposite to the rear air inlet.

[0008] The fan assembly also includes a left guide plate and a right guide plate. The left guide plate is located to the left of the left air intake, and the right guide plate is located to the right of the right air intake. Under the action of the centrifugal force of the fan assembly, the external airflow is drawn in through the rear air inlet and heat-exchanged by the heat exchanger. Part of the airflow is guided to the left air intake by the left guide plate and the duct housing, and part of the airflow is guided to the right air intake by the right guide plate and the duct housing.

[0009] In some embodiments, the left air guide plate and the air duct shell form an expansion space at the left air inlet of the fan group; and the right air guide plate and the air duct shell form another expansion space at the right air inlet of the fan group.

[0010] In some embodiments, the heat exchanger, the left air guide plate, the right air guide plate and the outer wall of the air duct shell form a third cavity, external air flow enters the third cavity through the heat exchanger under the action of the rotating centrifugal force of the fan, and is guided by the left air guide plate and the right air guide plate to the left air inlet and by the right air guide plate to the right air inlet.

[0011] In some embodiments, the left air guide plate is fixed to the left side of the air duct shell and covers the left air inlet, and the right air guide plate is fixed to the right side of the air duct shell and covers the right air inlet; wherein the inner surface of the rear side of the left air guide plate is located outside the outer surface of the left side of the heat exchanger, and the inner surface of the rear side of the right air guide plate is located outside the outer surface of the right side of the heat exchanger.

[0012] In some embodiments, the air duct shell is provided with an upper air outlet and a lower air outlet, and the fan assembly further comprises an upper support plate and a lower water pan, the upper support plate is fixed to the upper air outlet of the air duct shell, the lower water pan is fixed to the lower air outlet of the air duct shell, the upper ends of the left air guide plate and the right air guide plate are fixed to the air duct shell through the upper support plate respectively, and the lower ends of the left air guide plate and the right air guide plate are fixed to the air duct shell through the lower water pan or directly fixed to the air duct shell.

[0013] In some embodiments, the cross sections of the left air guide plate and the right air guide plate are arc-shaped, wherein the inner arc surface of the left air guide plate faces the left air inlet, and the inner arc surface of the right air guide plate faces the right air inlet.

[0014] In some embodiments, the height of the heat exchanger is h, and the height of the rotating shaft of the fan is h / 2.

[0015] In some embodiments, the third cavity comprises a third upper half cavity and a third lower half cavity, the volume of the third upper half cavity is Vs, and the volume of the third lower half cavity is Vx, wherein Vs / Vx=0.9~1.1, and the third upper half cavity and the third lower half cavity are bounded by the rotating shaft of the fan.

[0016] In some embodiments, the third cavity further comprises a third left half cavity and a third right half cavity, a volume of the third left half cavity is Wz, a volume of the third right half cavity is Wy, wherein Wz / Wy=0.9~1.1, the third left half cavity and the third right half cavity are bounded by a perpendicular bisector of a rotation axis of the fan.

[0017] In some embodiments, a minimum distance from the air duct shell to the heat exchanger is a, a is in a range of 10mm~30mm, a maximum distance from the air duct shell to the heat exchanger is b, b is in a range of 450mm~350mm; and / or, a maximum distance from a right side of the air duct shell to the right air deflector is c, c is in a range of 70mm~90mm, and / or, a maximum distance from a left side of the air duct shell to the left air deflector is also c, c is in a range of 70mm~90mm; and / or, a diameter of the left air suction port and the right air suction port is d, d is in a range of 180mm~250mm, and / or, a width of an inner cavity of the air duct shell is e, e is in a range of 150mm~230mm; and / or, a width of the fan is f, f is in a range of 155mm~175mm, and / or, a radius of the fan is r, r is in a range of 115mm~145mm.

[0018] In some embodiments, the centrifugal fan group is composed of double centrifugal fans.

[0019] The application further provides an air conditioner cabinet, comprising the air duct assembly according to any one of the above embodiments.

[0020] After the above technical solution is adopted, the application has the following beneficial effects compared with the prior art:

[0021] The fan assembly of the application forms left and right double suction, cooperates with the left air deflector and the right air deflector, avoids the low pressure area generated by the fan inlet (the left air suction port and the right air suction port) from directly acting on part of the surface of the heat exchanger, and further promotes the uniformity of the wind speed distribution of the whole heat exchanger surface, increases the heat exchange area, and greatly improves the heat exchange efficiency.

[0022] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the application. BRIEF DESCRIPTION OF DRAWINGS

[0023] The drawings are part of the application, which are used to provide further understanding of the application, the schematic embodiments of the application and the description thereof are used to explain the application, but cannot be used to limit the application. Obviously, the drawings in the following description are only some embodiments, and other drawings can be obtained by those skilled in the art without creating laborious work. In the drawings:

[0024] Figure 1 is a streamline diagram of a centrifugal fan air suction port directly opposite a heat exchanger in the related art;

[0025] Figure 2 is Figure 1 is a pressure distribution diagram of a wind channel cavity section in the middle;

[0026] Figure 3 is Figure 1 is a heat exchanger surface velocity distribution diagram in the middle;

[0027] Figure 4 is an exploded view of a wind channel assembly according to an exemplary embodiment of the present application;

[0028] Figure 5 is a cross-sectional view of a wind channel assembly according to an exemplary embodiment of the present application;

[0029] Figure 6 is another perspective cross-sectional view of a wind channel assembly according to an exemplary embodiment of the present application;

[0030] Figure 7 is a schematic diagram of a wind channel assembly structure parameter according to an exemplary embodiment of the present application; Figure 5 is a schematic diagram of internal air flow of a wind channel assembly according to an exemplary embodiment of the present application;

[0031] Figure 8 is a schematic diagram of internal air flow of a wind channel assembly according to an exemplary embodiment of the present application; Figure 6 is a schematic diagram of internal air flow of a wind channel assembly according to an exemplary embodiment of the present application;

[0032] Figure 9 and Figure 10 is a schematic diagram of a wind channel assembly structure parameter according to an exemplary embodiment of the present application;

[0033] Figure 11 is a streamline diagram of internal air flow of a fan assembly according to an exemplary embodiment of the present application;

[0034] Figure 12 is a pressure distribution diagram in a third cavity according to an exemplary embodiment of the present application;

[0035] Figure 13 is a heat exchanger surface velocity distribution diagram according to an exemplary embodiment of the present application;

[0036] Figure 14 is a cross-sectional velocity nephogram using a straight air deflector and an arc-shaped air deflector, respectively;

[0037] It should be noted that these drawings and written descriptions are not intended to limit the scope of the inventive concept in any way, but to illustrate the inventive concept to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0038] In the description of the present application, it should be noted that the terms "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0039] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "contact", "communication" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium. For those skilled in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0040] The present application provides a kind of air duct assembly, by optimizing the position layout of air duct structure and each component to avoid the low pressure area generated by centrifugal fan inlet directly acts on part of heat exchanger surface, simultaneously control cavity volume ratio and distance a parameter range, so that the pressure of centrifugal fan inlet low pressure area is self-adapting dispersion in cavity, low pressure is relatively uniformly acted on the entire heat exchanger surface, to promote the uniformity of wind speed distribution of the entire heat exchanger surface. At the same time, adopt arc line type air deflector to reduce air duct resistance, improve the wind speed of inlet, to increase the air volume of whole machine.

[0041] As Figures 4-14 The air duct assembly of the present application includes a heat exchanger 10 and a fan assembly.

[0042] The fan assembly includes an outer shell, which is provided with a rear inlet and upper and lower outlets (not shown in the figure);

[0043] The fan assembly is arranged in the outer shell, and the fan assembly includes an air duct shell 21 and a centrifugal fan set arranged in the air duct shell. The rotational axis of the centrifugal fan set is preferably perpendicular to the height direction of the outer shell. The air duct shell is provided with a left suction inlet 211 and a right suction inlet 212 on the left and right sides of the fan, respectively.

[0044] The heat exchanger 10 is arranged between the shell and the air duct shell body opposite to the rear air inlet of the shell; the fan assembly is preferably composed of double centrifugal fans and forms double air suction. In one example, the air duct shell body 21 can further include an upper air outlet 213 and a lower air outlet 214, the upper air outlet corresponds to the upper air outlet of the shell, the lower air outlet corresponds to the lower air outlet of the shell, and the upper air outlet 213 and the lower air outlet 214 are communicated with the left air suction port 211 and the right air suction port 212. Thus, the fan assembly forms a double-suction double-exhaust air duct. More specifically, the air duct shell body 21 can include a first cavity 215 and a second cavity 216, the upper air outlet 213 is formed in the first cavity 215, and the lower air outlet 214 is formed in the second cavity 216.

[0045] The fan assembly further includes a left air guide plate 22 and a right air guide plate 23, the left air guide plate 22 is located on the left side of the left air suction port 211, and the right air guide plate 23 is located on the right side of the right air suction port 212; wherein the external airflow is guided by the left air guide plate 22 to the left air suction port 211 and guided by the right air guide plate 23 to the right air suction port 212 after being heated by the heat exchanger 10 under the action of the rotating centrifugal force of the fan 24.

[0046] The fan assembly of the present application forms left and right double suction, cooperates with the left air guide plate 22 and the right air guide plate 23, avoids the low pressure area generated by the fan inlet (the left air suction port 211 and the right air suction port 212) from directly acting on part of the surface of the heat exchanger, thereby promoting the uniformity of the wind speed distribution of the entire heat exchanger surface, increasing the heat exchange area, and greatly improving the heat exchange efficiency.

[0047] In some embodiments, the left air guide plate and the air duct shell form an expansion space at the left air suction port of the fan group; the right air guide plate and the air duct shell form another expansion space at the right air suction port of the fan group, thereby reducing the turbulent loss and noise generated when the air from the heat exchanger is guided by the left and right air guide plates to the left and right air suction ports.

[0048] In some embodiments, the heat exchanger 10, the left air guide plate 22, the right air guide plate 23, and the outer wall of the air duct shell 21 enclose a third cavity 30, the external airflow enters the third cavity 30 after being heated by the heat exchanger 10 under the action of the rotating centrifugal force of the fan 24, and is guided by the left air guide plate 22 and the right air guide plate 23 to the left air suction port 211 and guided by the right air guide plate to the right air suction port 212.

[0049] The heat exchanger 10, the left air guide plate 22, the right air guide plate 23, and the outer wall of the air duct shell 21 of the present application enclose a third cavity 30, which guides the airflow at the fan inlet (the left air suction port 211 and the right air suction port 212), increases the heat exchange area, and allows more hot air to enter the left air suction port 211 and the right air suction port 212, thereby improving the air suction efficiency.

[0050] In some embodiments, asFigure 7 and Figure 8 As shown, the left air guide plate 22 is fixed to the left side of the air duct housing 21 and covers the left air intake 211, and the right air guide plate 23 is fixed to the right side of the air duct housing 21 and covers the right air intake 212; wherein, the inner surface 221 of the rear side of the left air guide plate 22 is located outside the outer surface 101 of the left side of the heat exchanger 10, and the inner surface of the rear side of the right air guide plate 23 is located outside the outer surface of the right side of the heat exchanger. This ensures the sealing of the third cavity 30 and prevents airflow from escaping from the gap between the air guide plate and the heat exchanger.

[0051] In some embodiments, such as Figure 1 As shown, the fan assembly also includes an upper support plate 26 and a lower water tray 25. The upper support plate 26 is fixed to the upper air outlet 213 of the air duct housing 21, and the lower water tray 25 is fixed to the lower air outlet 214 of the air duct housing 21. The upper ends of the left guide plate 22 and the right guide plate 23 are respectively fixed to the air duct housing 21 via the upper support plate 26. The lower ends of the left guide plate 22 and the right guide plate 23 are respectively fixed to the air duct housing 21 via the lower water tray 25 or directly fixed to the air duct housing 21.

[0052] In some embodiments, the cross-sections of the left guide plate 22 and the right guide plate 23 are both arc-shaped, wherein the inner arc surface of the left guide plate 22 faces the left air intake 211, and the inner arc surface of the right guide plate 23 faces the right air intake 212. The arc-shaped cross-sections of the left guide plate 22 and the right guide plate 23, compared to straight sections, reduce duct resistance and increase the airflow velocity in the lower tip area, thereby improving the overall airflow (e.g., ...). Figure 14 (As shown). In one example, the heat exchanger 10 can have a U-shaped cross-section, and the left air guide plate 22 and the right air guide plate 23 can be arc-shaped. This design can also make the air conditioner look more rounded and beautiful, thus improving the aesthetics of the air conditioner.

[0053] like Figure 9 and Figure 10 As shown, in some embodiments, the height of the heat exchanger 10 is h, and the height of the fan's rotating shaft is h / 2. The value of h can range from 1.2m to 0.5m, preferably h=0.9m. The rotating axis O of the centrifugal fan is on the same horizontal plane as half the height h / 2 of the heat exchanger 10.

[0054] In some embodiments, such as Figure 7 and Figure 8As shown, the third cavity 30 includes a third upper half cavity and a third lower half cavity, the volume of the third upper half cavity is Vs, the volume of the third lower half cavity is Vx, wherein Vs / Vx = 0.9~1.1, the third upper half cavity and the third lower half cavity are bounded by the rotation axis O of the fan 24. The third cavity is divided into the third upper half cavity and the third lower half cavity by the horizontal plane at the height of the rotation axis O of the centrifugal fan. The volume of the third upper half cavity is Vs, the volume of the third lower half cavity is Vx, the volume ratio v of the third upper half cavity to the third lower half cavity is Vs / Vx, and v ranges from 0.9 to 1.1, and the best value is v = 1. This is more conducive to ensuring the uniformity of the wind speed of the upper half and the lower half of the heat exchanger, and is more conducive to improving the uniformity of the wind speed distribution on the surface of the entire heat exchanger.

[0055] In some embodiments, the third cavity further includes a third left half cavity and a third right half cavity, the volume of the third left half cavity is Wz, the volume of the third right half cavity is Wy, wherein Wz / Wy = 0.9~1.1, the third left half cavity and the third right half cavity are bounded by the perpendicular bisector E of the rotation axis O of the fan. The third cavity is divided into the third left half cavity and the third right half cavity by the perpendicular bisector E, the volume of the third left half cavity is Wz, and the volume of the third right half cavity is Wy. The volume ratio w of the third left half cavity to the third right half cavity is Wz / Wy, and w ranges from 0.9 to 1.1, and the best value is w = 1. This is more conducive to ensuring the uniformity of the wind speed of the left half and the right half of the heat exchanger, and is more conducive to improving the uniformity of the wind speed distribution on the surface of the entire heat exchanger.

[0056] In some embodiments, as shown in Figure 9 and Figure 10 As shown, the minimum distance a from the air duct shell 21 to the heat exchanger 10 is 10mm~30mm, and the best value is a = 12mm. The smaller the distance a, the closer the air duct shell is to the heat exchanger, which will cause the wind speed in the area of the heat exchanger 10 near the air duct shell to decrease, and the wind speed distribution on the surface of the entire heat exchanger will be uneven, which will reduce the heat exchange efficiency. At the same time, the air duct resistance in the third cavity will increase, which will reduce the air volume of the air conditioner. The larger the distance a, the farther the air duct shell is from the heat exchanger. Due to the size limitation of the air conditioner, the impeller radius will be compressed and reduced, and the efficiency of the fan of the air conditioner will be reduced. Moreover, due to the space limitation of the shape of the air conditioner, the distance a cannot be too large. Therefore, after comprehensive analysis, the best value range of the distance a is 10~30mm. And / or,

[0057] The maximum distance from the air duct shell 21 to the heat exchanger 10 is b, b is in the range of 450mm-350mm, preferably b=380mm;And / or, the maximum distance from the right side of the air duct shell 21 to the right air deflector 23 is c, c is in the range of 70mm-90mm, preferably c=85mm;And / or, the maximum distance from the left side of the air duct shell 21 to the left air deflector is also c, c is in the range of 70mm-90mm, preferably c=85mm;And / or, the diameter of the left air inlet and the right air inlet is d, d is in the range of 180mm-250mm, preferably d=210mm;And / or, the width of the inner cavity of the air duct shell 21 is e, e is in the range of 150mm-230mm, preferably e=190mm;And / or, the width of the fan 24 is f, f is in the range of 155mm-175mm, preferably f=160mm;And / or, the radius of the fan is r, r is in the range of 115mm-145mm, preferably r=130mm.

[0058] By optimizing the relative position layout and parameters of the air duct shell (air duct shell 21), the heat exchanger 10, the double-suction centrifugal fan 24, the left air deflector 22, the right air deflector 23, the lower water pan 25 and the upper support plate 26, the control cavity volume ratio and the distance a parameter range, the pressure in the low pressure area of the centrifugal fan inlet is self-adaptively dispersed in the third cavity, and the low pressure is relatively uniformly applied to the entire heat exchanger surface, thereby promoting the uniformity of the wind speed distribution of the entire heat exchanger surface, as shown in Figure 12 and 13

[0059] The application also provides an air conditioner cabinet, comprising the air duct assembly of any one of the above embodiments.

[0060] It can be further understood that "multiple" in the present disclosure means two or more, and other quantifiers are similar. "And / or" describes the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B can represent: A exists alone, A and B exist together, and B exists alone. The character " / " generally represents an "or" relationship between the associated objects before and after it. The singular forms "a", "said" and "the" are also intended to include the plural forms, unless the context clearly indicates otherwise.

[0061] ​It will be further appreciated that terms, such as "first", "second", etc., are used to describe various information, but the information should not be limited to such terms. These terms are used only to distinguish one piece of information from another piece of information of the same type, and do not indicate a particular order or a particular importance. In fact, the expressions "first", "second", etc. can be used interchangeably. For example, the first information can also be referred to as the second information, and similarly, the second information can also be referred to as the first information, without departing from the scope of the present disclosure.

[0062] It will be further understood that, although the operations of the presently disclosed embodiments are described in a particular, sequential order for convenient presentation, unless otherwise specified, the operations can be performed in any order so as to be properly and efficiently carried out. Accordingly, it is not required that all operations be performed in the described order, but rather, the order of certain operations can be rearranged.

[0063] Other embodiments of the present disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present disclosure following, in general, the principles of the present disclosure and including such departures from the present disclosure that come within known or customary practice in the art to which the present disclosure pertains. The specification and examples are to be regarded as illustrative only, and the true scope and spirit of the present disclosure are indicated by the following claims.

[0064] It should be understood that the present disclosure is not limited to the precise structures herein described and illustrated in the drawings, and that various modifications and changes can be made without departing from the scope thereof. The scope of the present disclosure is limited only by the claims that follow.

Claims

1. An air duct assembly for a top and bottom air outlet cabinet machine, characterized in that, It comprises: a shell provided with a rear air inlet and upper and lower air outlets; a fan assembly arranged in the shell, the fan assembly comprising a duct shell and a centrifugal fan set arranged in the duct shell, the rotation axis of the centrifugal fan set being perpendicular to the height direction of the shell, the duct shell being provided with a left air suction port and a right air suction port respectively located at the left and right sides of the centrifugal fan set; a heat exchanger arranged between the shell and the duct shell opposite to the rear air inlet; the fan assembly further comprises a left air guide plate and a right air guide plate, the left air guide plate being located at the left side of the left air suction port, and the right air guide plate being located at the right side of the right air suction port; wherein external air flow is sucked from the rear air inlet under the action of the centrifugal force of the rotating centrifugal fan set, and after heat exchange in the heat exchanger, a part is guided to the left air suction port by the left air guide plate and the duct shell, and another part is guided to the right air suction port by the right air guide plate and the duct shell; the rear ends of the left air guide plate and the right air guide plate are connected with the heat exchanger, and the front ends of the left air guide plate and the right air guide plate are connected with the front end of the duct shell, the heat exchanger, the left air guide plate, the right air guide plate and the outer wall of the duct shell form a third cavity, and the external air flow enters the third cavity after heat exchange in the heat exchanger under the action of the centrifugal force of the fan, and is guided to the left air suction port by the left air guide plate and to the right air suction port by the right air guide plate; the third cavity comprises a third upper half cavity and a third lower half cavity, the volume of the third upper half cavity is Vs, and the volume of the third lower half cavity is Vx, wherein Vs / Vx = 0.9-1.1, the third upper half cavity and the third lower half cavity are bounded by the rotation axis of the fan; the third cavity further comprises a third left half cavity and a third right half cavity, the volume of the third left half cavity is Wz, and the volume of the third right half cavity is Wy, wherein Wz / Wy = 0.9-1.1, the third left half cavity and the third right half cavity are bounded by the perpendicular bisector of the rotation axis of the fan.

2. The air duct assembly according to claim 1, wherein the left air guide plate and the duct shell form an expansion space at the left air suction port of the fan set, and the right air guide plate and the duct shell form another expansion space at the right air suction port of the fan set.

3. The air duct assembly according to claim 1, wherein the left air guide plate is fixed to the left side of the duct shell and covers the left air suction port, and the right air guide plate is fixed to the right side of the duct shell and covers the right air suction port; wherein the inner surface of the rear side of the left air guide plate is located outside the outer surface of the left side of the heat exchanger, and the inner surface of the rear side of the right air guide plate is located outside the outer surface of the right side of the heat exchanger.

4. The air duct assembly according to claim 3, wherein the cross sections of the left air guide plate and the right air guide plate are both arc-shaped, wherein the inner arc surface of the left air guide plate faces the left air suction port, and the inner arc surface of the right air guide plate faces the right air suction port.

5. The air duct assembly according to claim 1, wherein The height of the heat exchanger is h, and the height of the rotating shaft of the fan is h / 2.

6. The air duct assembly according to claim 1, wherein, The minimum distance between the air duct housing and the heat exchanger is a, and a is in the range of 10mm to 30mm, and the maximum distance between the air duct housing and the heat exchanger is b, and b is in the range of 450mm to 350mm; and / or, The maximum distance between the right side of the air duct housing and the right air deflector is c, and c is in the range of 70mm to 90mm, and / or, the maximum distance between the left side of the air duct housing and the left air deflector is in the range of 70mm to 90mm; and / or, The diameter of the left air inlet and the right air inlet is d, and d is in the range of 180mm to 250mm, and / or, the width of the inner cavity of the air duct housing is e, and e is in the range of 150mm to 230mm; and / or, The width of the fan is f, and f is in the range of 155mm to 175mm, and / or, the radius of the fan is r, and r is in the range of 115mm to 145mm.

7. The air duct assembly according to claim 1, wherein, The air duct housing is provided with an upper air outlet and a lower air outlet, The fan assembly further comprises an upper support plate and a lower water collecting tray, the upper support plate is fixed to the upper air outlet of the air duct housing, and the lower water collecting tray is fixed to the lower air outlet of the air duct housing, The upper ends of the left air deflector and the right air deflector are fixed to the air duct housing through the upper support plate, and the lower ends of the left air deflector and the right air deflector are fixed to the air duct housing through the lower water collecting tray or directly fixed to the air duct housing.

8. The air duct assembly according to any one of claims 1-7, wherein, The centrifugal fan assembly is composed of double centrifugal fans.

9. An air conditioner cabinet machine, characterized in that, It comprises: The air duct assembly according to any one of claims 1-8.

Images