CN110762622B

CN110762622B - Air conditioner

Info

Publication number: CN110762622B
Application number: CN201911086325.5A
Authority: CN
Inventors: 董明珠; 黄鑫; 吴俊鸿; 李树云; 李业强; 何博; 肖洪力; 陈英强; 田雅颂; 刘江驰; 高智强; 李建建; 张兴钰; 翟振坤; 向新贤; 曹睿; 熊绍森; 徐耿彬; 张守信; 魏剑
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2019-11-08
Filing date: 2019-11-08
Publication date: 2024-07-02
Anticipated expiration: 2039-11-08
Also published as: CN110762622A

Abstract

The application provides an air conditioner. The air conditioner comprises an air conditioner shell (10), wherein a first air opening (11) is formed in the upper end of the air conditioner shell (10), a second air opening (12) is formed in the lower end of the air conditioner shell (10), a fan and a heat exchanger (14) are arranged between the first air opening (11) and the second air opening (12), the heat exchanger (14) is arranged at one air opening, the fan is arranged between the heat exchanger (14) and the other air opening, a first flow guiding device is arranged at one end, far away from the fan, of the heat exchanger (14), the first flow guiding device is arranged on the inner side of the heat exchanger (14) and provided with a flow guiding surface which is transited from a first direction to a second direction, and a preset included angle is formed between the first direction and the second direction. According to the air conditioner disclosed by the application, the air flow can be guided, the turbulence in the heat exchanger is weakened, and the air outlet speed of the air outlet is more uniform.

Description

Air conditioner

Technical Field

The application relates to the technical field of air conditioning, in particular to an air conditioner.

Background

Most of the existing cabinet air conditioners are centrifugal cabinets or through-flow cabinets, the air supply mode is single, cold air and hot air are blown out from the same air port, the air direction is deflected only by virtue of an air guide mechanism, most of hot air begins to float up when the air outlet is far away from the ground or the roof in a heating mode, most of cold air begins to sink when the air does not reach the roof in a cooling mode, so that the room temperature distribution is uneven, the user comfort is poor, and the heat exchange time is long.

In the working process of the cabinet air conditioner, the air flow must be changed in a speed direction of 90 degrees from the inside of the heat exchanger to the air outlet at the lower end, namely, the air flow enters the heat exchanger in an axial direction and is blown out in a radial direction of the heat exchanger, when the speed is too high, the air flow can impact the shell at the lower end surface of the heat exchanger due to inertia, the flow is disturbed, the air outlet speed at the lower end of the heat exchanger is increased, and the air speed distribution at the air outlet is uneven.

Disclosure of Invention

Therefore, the technical problem to be solved by the application is to provide the air conditioner which can guide the airflow, weaken the turbulence in the heat exchanger and enable the air outlet velocity of the air outlet to be more uniform.

In order to solve the problems, the application provides an air conditioner, which comprises an air conditioner shell, wherein a first air port is arranged at the upper end of the air conditioner shell, a second air port is arranged at the lower end of the air conditioner shell, a fan and a heat exchanger are arranged between the first air port and the second air port, the heat exchanger is arranged at one air port, the fan is arranged between the heat exchanger and the other air port, a first flow guiding device is arranged at one end of the heat exchanger far away from the fan, the first flow guiding device is arranged at the inner side of the heat exchanger and provided with a flow guiding surface which transits from a first direction to a second direction, and a preset included angle is formed between the first direction and the second direction.

Preferably, the preset included angle alpha is in the range of 45 degrees less than or equal to alpha less than or equal to 90 degrees.

Preferably, the first flow guiding device is a first flow guiding cone.

Preferably, the bus of the first guide cone is a smooth transition curve.

Preferably, the bus of the first diversion cone is a single arc line; or, the bus of the first diversion cone is a plurality of sections of arc lines.

Preferably, when the generating line of the first diversion cone is a multi-segment arc line, in an axial section of the first diversion cone, the circle centers of the multi-segment arc line of the first diversion cone are located on the same side of the generating line, or the circle centers of the multi-segment arc line of the first diversion cone are located on different sides of the generating line.

Preferably, the axial height of the first diversion cone is L3, and the height of the heat exchanger in the axial direction of the first diversion cone is L2, wherein l3= (30% -75%) L2; and/or the maximum diameter of the first diversion cone is D4, the maximum distance between the inner wall surfaces of the heat exchanger is D1, wherein D4= (50% -100%) D1.

Preferably, the bottom surface of the first diversion cone is flush with the end surface of the heat exchanger at the end of the first diversion cone; and/or the central axis of the first diversion cone coincides with the central axis of the fan.

Preferably, a filter screen is arranged at the first air port and/or the second air port.

Preferably, a filter screen is movably arranged at the first air port, and the filter screen is provided with a first position for opening the first air port and a second position for blocking the first air port; and/or a filter screen is movably arranged at the second air opening, and the filter screen is provided with a first position for opening the second air opening and a second position for blocking the second air opening.

Preferably, the heat exchanger is arranged at the second air port, and the second diversion cone is arranged at the first air port.

Preferably, the fan is a counter-rotating axial flow fan.

Preferably, the air conditioning shell is a polygon prism, and the air conditioning shell comprises a front panel, a first side plate and a second side plate, wherein the first side plate and the second side plate are adjacent to the front panel, the first side plate is located on the first side of the front panel, the second side plate is located on the second side of the front panel, and the first air port is located on the top ends of the first side plate, the front panel and the second side plate.

Preferably, the number of the second air openings is two, one of the second air openings is arranged on the first side plate, the other second air opening is arranged on the second side plate, and the two second air openings are spaced by the front panel.

Preferably, a second flow guiding device is arranged in the air duct between the heat exchanger and the fan, the second flow guiding device comprises a flow guiding ring and a flow guiding plate arranged in the flow guiding ring, the flow guiding plate extends along the axial direction of the flow guiding ring, two sides of the flow guiding plate are connected to the inner wall of the flow guiding ring, and the flow guiding plate divides a flow guiding channel of the flow guiding ring into at least two flow guiding areas.

The application provides an air conditioner, which comprises an air conditioner shell, wherein a first air opening is formed in the upper end of the air conditioner shell, a second air opening is formed in the lower end of the air conditioner shell, a fan and a heat exchanger are arranged between the first air opening and the second air opening, the heat exchanger is arranged at one air opening, the fan is arranged between the heat exchanger and the other air opening, a first flow guiding device is arranged at one end of the heat exchanger, which is far away from the fan, and is arranged at the inner side of the heat exchanger and provided with a flow guiding surface which is transited from a first direction to a second direction, and a preset included angle is formed between the first direction and the second direction. The air conditioner is provided with the first flow guiding device for changing the flow direction of the air flow on the inner side of the heat exchanger, the forced air flow guiding can be carried out on the air flow flowing through the heat exchanger by the first flow guiding device, so that the air flow is stably deflected in the speed direction, the turbulence inside the heat exchanger is weakened, the air outlet speed of the air outlet is more uniform, and the efficiency of the whole air conditioner is improved.

Drawings

Fig. 1 is a schematic perspective view of a second flow guiding device of an air conditioner according to an embodiment of the present application;

fig. 2 is a schematic cross-sectional view of a second flow guiding device of an air conditioner according to an embodiment of the present application;

FIG. 3 is an enlarged schematic view of the structure at A of FIG. 2;

fig. 4 is a perspective view of an air conditioner according to an embodiment of the present application;

fig. 5 is a cross-sectional structural view of an air conditioner according to an embodiment of the present application;

FIG. 6 is a diagram illustrating a lower air inlet and upper air outlet of an air conditioner according to an embodiment of the present application;

FIG. 7 is a diagram showing the structure of an air conditioner according to an embodiment of the present application when air is supplied from the upper side and discharged from the lower side;

Fig. 8 is a first structural schematic diagram of a first guide cone of an air conditioner according to a first embodiment of the present application;

fig. 9 is a schematic view showing a second structure of a first guide cone of an air conditioner according to a first embodiment of the present application.

The reference numerals are expressed as:

1. A guide ring; 2. a rectifying plate; 3. a first sound deadening hole; 4. a first inner cylinder; 5. a first outer cylinder; 6. a second inner cylinder; 7. a second outer cylinder; 8. a transverse baffle; 9. a second sound deadening hole; 10. an air-conditioning case; 11. a first tuyere; 12. a second tuyere; 13. a disrotatory axial flow fan; 14. a heat exchanger; 15. a first diversion cone; 16. a second diversion cone; 17. a front panel; 18. a first side plate; 19. a second side plate; 20. and (5) a base.

Detailed Description

Referring to fig. 1 to 9 in combination, according to an embodiment of the present application, an air conditioner includes an air conditioner case 10, a first air port 11 is provided at an upper end of the air conditioner case 10, a second air port 12 is provided at a lower end of the air conditioner case 10, a blower and a heat exchanger 14 are provided between the first air port 11 and the second air port 12, the heat exchanger 14 is provided at one of the air ports, the blower is provided between the heat exchanger 14 and the other air port, a first flow guiding device is provided at an end of the heat exchanger 14 away from the blower, the first flow guiding device is provided at an inner side of the heat exchanger 14 and has a flow guiding surface transiting from a first direction to a second direction, and a predetermined angle is formed between the first direction and the second direction.

The air conditioner is provided with the first flow guiding device for changing the flow direction of the air flow on the inner side of the heat exchanger 14, the forced air flow guiding can be carried out on the air flow flowing through the heat exchanger 14 through the first flow guiding device, so that the air flow is stably deflected in the speed direction, the turbulence inside the heat exchanger is weakened, the air outlet speed of the air outlet is more uniform, and the efficiency of the whole air conditioner is improved.

Preferably, the range of the preset included angle alpha is 45 degrees or more and 90 degrees or less, so that the first flow guiding device can be used for adjusting the flow direction of the air flow more obviously, turbulent flow of the air flow at the baffling position in the heat exchanger 14 is reduced more effectively, adverse influence of turbulent flow on air outlet at the heat exchanger 14 is avoided, uniformity of air outlet at the heat exchanger 14 is improved, uniformity of room temperature distribution is improved, and comfort level of a user is improved.

In one embodiment, the first guiding device is the first guiding cone 15, which has a simple structure, and can guide the airflow flowing through the heat exchanger 14 from the whole circumferential direction, so that 360-degree dead-angle-free guiding is formed, smoothness and continuity in the airflow flowing process are improved, airflow flowing loss is reduced, and airflow flowing efficiency is improved. Specifically, in the axial section of the first cone 15, the first direction is the tangential direction of the generatrix of the first cone 15 at the radially outer edge position, the second direction is the tangential direction of the generatrix of the first cone 15 at the axially end position, and the included angle between the first direction and the second direction is the included angle formed by the tangents at the two positions.

The bus of the first diversion cone 15 is, for example, a smooth transition curve, so that in the process of flowing the air flow along the surface of the first diversion cone 15, the generated fluctuation is smaller, the flowing is smoother, the flowing speed fluctuation is smaller, and the uniformity of the flowing of the air flow is further improved.

The bus of the first diversion cone 15 is a single arc line; or, the bus of the first diversion cone 15 is a plurality of sections of circular arcs.

When the generating line of the first guiding cone 15 is a multi-segment arc line, in an axial section of the first guiding cone 15, the circle centers of the multi-segment arc line of the first guiding cone 15 are located on the same side of the generating line, or the circle centers of the multi-segment arc line of the first guiding cone 15 are located on different sides of the generating line.

Through the structural style of flexible adjustment generating line, can select the structural style of first water conservancy diversion awl 15 as required for the structure of first water conservancy diversion awl 15 can better with the structure phase-match of heat exchanger 14 and air conditioner casing 10, further improves air current flow efficiency, reduces the air current flow loss, reduces the air current flow noise.

The axial height of the first diversion cone 15 is L3, the axial height of the heat exchanger 14 in the first diversion cone 15 is L2, where l3= (30% -75%) L2, preferably l3= 0.5L2, which can ensure that the first diversion cone 15 has a sufficient axial length, and can reduce the variation amplitude of the bus, further reduce the variation amplitude of the airflow flow, realize the stable flow direction change of the airflow, further reduce the flow loss of the airflow, and reduce the noise generated in the airflow steering process.

The maximum diameter of the first cone 15 is D4, and the maximum distance between the inner wall surfaces of the heat exchanger 14 is D1, where d4= (50% -100%) D1. Preferably, d4=d1 can guide the whole end of the heat exchanger 14, so as to avoid the occurrence of dead angle of guide, improve the guide efficiency, and more effectively avoid the generation of turbulent flow.

The bottom surface of the first diversion cone 15 is level with the end surface of the heat exchanger 14 at the end; and/or the central axis of the first diversion cone 15 coincides with the central axis of the fan.

A filter screen is arranged at the first air port 11 and/or the second air port 12.

A filter screen is movably arranged at the first air opening 11, and is provided with a first position for opening the first air opening 11 and a second position for blocking the first air opening 11; and/or the second air port 12 is movably provided with a filter screen, and the filter screen is provided with a first position for opening the second air port 12 and a second position for blocking the second air port 12.

In the present embodiment, the heat exchanger 14 is provided at the second tuyere 12, and the second guide cone 16 is provided at the first tuyere 11. The second guiding cone 16 can form effectual water conservancy diversion effect to the air inlet or the air-out of first wind gap 11 department, improves the flow efficiency of air current, simultaneously, when first wind gap 11 uses as the air outlet, second guiding cone 16 can make the air-out direction horizontal direction blow off, enlarges the air supply distance of first wind gap 11 department, can realize shower type air-out simultaneously when refrigerating, improves user's use experience.

Preferably, the fan is a counter-rotating axial fan 13. The counter-rotating axial flow fan 13 comprises an upper axial flow fan blade and a lower axial flow fan blade, and the air supply directions of the upper axial flow fan blade and the lower axial flow fan blade are consistent.

In this embodiment, the air conditioning case 10 is a polygonal column, the air conditioning case 10 includes a front panel 17, a first side plate 18 and a second side plate 19, the first side plate 18 and the second side plate 19 are adjacent to the front panel 17, the first side plate 18 is located on a first side of the front panel 17, the second side plate 19 is located on a second side of the front panel 17, and the first tuyere 11 is located at top ends of the first side plate 18, the front panel 17 and the second side plate 19.

The number of second tuyeres 12 is two, one of the second tuyeres 12 being provided on the first side plate 18 and the other second tuyeres 12 being provided on the second side plate 19, the two second tuyeres 12 being spaced apart by the front panel 17.

A second flow guiding device is arranged in the air duct between the heat exchanger 14 and the fan, the second flow guiding device comprises a flow guiding ring 1 and a flow guiding plate 2 arranged in the flow guiding ring 1, the flow guiding plate 2 extends along the axial direction of the flow guiding ring 1, two sides of the flow guiding plate 2 are connected to the inner wall of the flow guiding ring 1, and the flow guiding plate 2 divides the flow guiding channel of the flow guiding ring 1 into at least two flow guiding areas.

The guide ring 1 is located between the fan and the heat exchanger 14, and is used for guiding the airflow in the internal air duct, on one hand, guiding and rectifying the airflow flowing through the guide ring 1, and on the other hand, silencing the airflow flowing through the guide ring 1, reducing airflow flowing noise and improving airflow flowing efficiency. The internal air passages described above are respectively communicated with the first air port 11 and the second air port 12.

In the present embodiment, the upper edge of the deflector ring 1 extends onto the top surface of the base 20, and the lower edge of the deflector ring 1 extends to the end surface of the heat exchanger 14 and corresponds to the inner edge of the heat exchanger 14.

This second guiding device has set up rectification board 2 in water conservancy diversion circle 1, because rectification board 2 is located inside the water conservancy diversion circle 1 to separate into two at least rectification regions through water conservancy diversion circle 1, consequently, not only can utilize water conservancy diversion circle 1 itself to rectify the air current of water conservancy diversion circle 1 inner periphery side, but also can utilize rectification board 2 to rectify the air current that is close to rectification board 2 region through water conservancy diversion circle 1, consequently can carry out the rectification of a greater range and a greater region to the air current that flows through water conservancy diversion circle 1, make the air current that flows through water conservancy diversion circle 1 all can effectively rectify, consequently can reduce the flow loss that the air current is in the wind channel disordered flow and causes to a greater extent, improve air current flow efficiency, improve the water conservancy diversion effect of water conservancy diversion circle 1.

The rectifying plate 2 is straight along the axial extension line, so that the rectifying plate 2 can be prevented from bending in the process of extending along the axial direction, a more effective rectifying effect can be achieved, the air flow entering the guide ring 1 can form regular straight-line air flow under the rectifying action of the rectifying plate 2, and the flow loss generated in the air flow flowing process in the air duct can be effectively reduced.

The rectifying plate 2 is a straight plate or an arc plate. In this embodiment, the rectifying plate 2 is a straight plate or an arc plate, specifically, on the basis that an extension line of the rectifying plate along the axial direction is a straight line, the rectifying plate is a straight line or an arc line in a section perpendicular to the extension line. The rectification plate formed under the condition, whether the rectification plate is an arc plate or a straight plate, has a straight rectification effect on the airflow in the flowing direction of the airflow, has good rectification effect, and reduces the flowing resistance of the airflow.

Preferably, the number of the rectifying plates 2 is plural, and the plurality of rectifying plates 2 are parallel or intersected in the guide ring 1. The internal flow channel of the guide ring 1 can be divided into a plurality of rectifying areas by the plurality of rectifying plates 2, so that the flow rate of gas flowing through each rectifying area is limited, and therefore, the rectifying plates 2 on the periphery of each area have more obvious rectifying effect on the gas flow flowing through the area, and the gas flow in the center and the periphery of the guide ring 1 can be effectively rectified, so that better rectifying effect is achieved.

Preferably, the rectifying plate 2 includes at least two straight plates, wherein the two straight plates are perpendicularly intersected, and an intersection line is located on a central axis of the guide ring 1, so that an air flow located in a centremost area and not easily rectified by an inner peripheral wall of the guide ring 1 can be guaranteed, and the air flow can be rectified by the straight plate-shaped rectifying plate 2, so that effective rectification can be guaranteed in each area of a guide channel of the guide ring 1, and the rectifying effect is further improved.

In this embodiment, the number of rectifying plates 2 is plural, the number of rectifying plates 2 is divided into two groups, each rectifying plate 2 in the first group of rectifying plates 2 is parallel to each other, each rectifying plate 2 in the second group of rectifying plates 2 is parallel to each other, and the first group of rectifying plates 2 is perpendicular to the second group of rectifying plates 2.

In this embodiment, each group of rectifying plates 2 includes three rectifying plates 2, and six rectifying plates 2 are matched with the guide ring 1 in total, so that the guide channel of the guide ring 1 is divided into 16 rectifying areas, when the fan blows out rotating and irregular air flow, the air flow is guided by the guide ring 1 to flow from the 16 rectifying areas to form regular straight-line air flow, thereby playing the role of an air rectifier and reducing flow loss caused by disordered flow of the air flow in the air duct.

Preferably, the inner peripheral wall of the deflector ring 1 is provided with a first sound deadening hole 3. By arranging the silencing holes on the guide ring 1, the air flow passing through the guide ring 1 can be silenced by utilizing the silencing Kong Duiliu on the guide ring 1, so that the pneumatic noise of the air flow flowing through the guide ring 1 is reduced.

Preferably, the aperture of the first sound deadening holes 3 is between 0.5 and 1.5mm, and the interval between adjacent first sound deadening holes 3 is 6mm in the section perpendicular to the central axis, so that a microporous sound deadening cylinder can be formed, which has sound deadening characteristics of wide frequency band, small volume, high efficiency, and the above aperture size is selected, which can also be easily processed and is not easily blocked in use.

The water conservancy diversion circle 1 includes first inner tube 4 and first urceolus 5, and first inner tube 4 is located the inner periphery side of first urceolus 5, is provided with first amortization hole 3 on the first inner tube 4. A silencing cavity communicated with the first silencing hole 3 is formed between the first inner cylinder 4 and the first outer cylinder 5, and the silencing cavity can be utilized to further strengthen the noise reduction effect of the guide ring 1.

Preferably, a transverse baffle plate 8 is further arranged between the first inner cylinder 4 and the first outer cylinder 5, the transverse baffle plate 8 is arranged along the circumferential direction of the guide ring 1, and a cavity enclosed by the first inner cylinder 4 and the first outer cylinder 5 is divided into at least two along the axial direction. Through setting up transverse baffle 8, can effectively prevent to take place along the sound wave propagation of the axial direction of pipe in the cavity between first inner tube 4 and the first urceolus 5, further improve amortization noise reduction effect.

Preferably, the transverse baffle 8 has a thickness of 3mm.

A second inner cylinder 6 is also arranged between the first inner cylinder 4 and the first outer cylinder 5, and a first silencing hole 3 is arranged on the second inner cylinder 6.

A second outer cylinder 7 is arranged between the second inner cylinder 6 and the first outer cylinder 5, and a first silencing hole 3 is arranged on the second outer cylinder 7. Through increasing second inner tube 6 and second outer section of thick bamboo 7, and all set up the first amortization hole 3 that link up on second inner tube 6 and second outer section of thick bamboo 7, can form the multilayer and perforate a section of thick bamboo to form multilayer amortization noise reduction structure on the section of thick bamboo wall of water conservancy diversion circle 1, play better amortization noise reduction effect.

Preferably, the thickness of the second inner cylinder 6 is greater than the thickness of the second outer cylinder 7. Specifically, in this embodiment, the thickness of the second inner tube 6 is 4mm, and the thickness of the second outer tube 7 is 2mm, so that the occupation of the tube body to the tube wall space of the guide ring 1 can be reduced, thereby more effectively forming a silencing cavity and improving the silencing effect.

In the present embodiment, the thickness of the second outer cylinder 7 is smaller than that of the second inner cylinder 6, because the second inner cylinder 6 is closer to the air flow, so that the influence of vibration generated when the air flow flows on the second inner cylinder 6 is greater, if the thickness of the second inner cylinder 6 is too small, the second inner cylinder 6 is caused to vibrate along with the flow of the air flow, resulting in a reduction in vibration and noise reduction effect of the second inner cylinder 6 on the air flow.

Preferably, the rectifying plate 2 is provided with a second silencing hole 9.

The rectifying plate 2 is made of sound absorbing material.

When the airflow flows through the rectifying plate 2, the rectifying plate 2 can not only rectify the airflow, but also can play a silencing role, so that the airflow flowing loss can be reduced, and the airflow flowing noise can be reduced.

When the inner wall of the guide ring 1 and the rectifying plate 2 are provided with the silencing holes, the guide ring and the rectifying plate are combined to be silenced, so that pneumatic noise and wind cavity resonance can be reduced to the greatest extent.

It will be readily appreciated by those skilled in the art that the above advantageous ways can be freely combined and superimposed without conflict.

The foregoing description of the preferred embodiments of the application is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the application. The foregoing is merely a preferred embodiment of the present application, and it should be noted that it will be apparent to those skilled in the art that modifications and variations can be made without departing from the technical principles of the present application, and these modifications and variations should also be regarded as the scope of the application.

Claims

1. The utility model provides an air conditioner, its characterized in that includes air conditioning case (10), the upper end of air conditioning case (10) is provided with first wind gap (11), the lower extreme of air conditioning case (10) is provided with second wind gap (12), first wind gap (11) with be provided with fan and heat exchanger (14) between second wind gap (12), heat exchanger (14) set up in one of them wind gap department, the fan sets up between heat exchanger (14) and another one wind gap, heat exchanger (14) are kept away from the one end of fan is provided with first guiding device, first guiding device set up in heat exchanger (14) inboard to have the guide surface from first direction transition to the second direction, first direction with form the contained angle of predetermineeing between the second direction.

2. An air conditioner according to claim 1, wherein the predetermined included angle α is in a range of 45 ° or more and 90 ° or less.

3. An air conditioner according to claim 1, wherein the first flow guiding device is a first flow guiding cone (15).

4. An air conditioner according to claim 3, wherein the generatrix of the first guide cone (15) is a rounded transition curve.

5. The air conditioner according to claim 4, wherein the generatrix of the first diversion cone (15) is a single arc line; or, the bus of the first diversion cone (15) is a multi-section circular arc line.

6. The air conditioner according to claim 5, wherein when the generatrix of the first diversion cone (15) is a plurality of circular arcs, in an axial section of the first diversion cone (15), the circle centers of the plurality of circular arcs of the first diversion cone (15) are located on the same side of the generatrix, or the circle centers of the plurality of circular arcs of the first diversion cone (15) are located on different sides of the generatrix.

7. An air conditioner according to claim 3, wherein the axial height of the first guide cone (15) is L3, and the height of the heat exchanger (14) in the axial direction of the first guide cone (15) is L2, wherein l3= (30% -75%) L2; and/or the maximum diameter of the first diversion cone (15) is D4, and the maximum distance between the inner wall surfaces of the heat exchanger (14) is D1, wherein D4= (50% -100%) D1.

8. An air conditioner according to claim 3, wherein the bottom surface of the first guide cone (15) is flush with the end surface of the heat exchanger (14) at the end thereof; and/or the central axis of the first diversion cone (15) coincides with the central axis of the fan.

9. Air conditioner according to claim 1, characterized in that a filter screen is provided at the first air opening (11) and/or the second air opening (12).

10. The air conditioner according to claim 9, wherein the filter screen is movably arranged at the first air port (11), and the filter screen has a first position for opening the first air port (11) and a second position for blocking the first air port (11); and/or the second air port (12) is movably provided with the filter screen, and the filter screen is provided with a first position for opening the second air port (12) and a second position for blocking the second air port (12).

11. An air conditioner according to claim 1, wherein the heat exchanger (14) is arranged at the second air port (12), and the first air port (11) is provided with a second flow guiding cone (16).

12. An air conditioner according to claim 1, characterized in that the fan is a counter-rotating axial fan (13).

13. The air conditioner according to claim 1, wherein the air conditioner case (10) is a polygonal column, the air conditioner case (10) includes a front panel (17), a first side plate (18) and a second side plate (19), the first side plate (18) and the second side plate (19) are adjacent to the front panel (17), the first side plate (18) is located at a first side of the front panel (17), the second side plate (19) is located at a second side of the front panel (17), and the first tuyere (11) is located at top ends of the first side plate (18), the front panel (17) and the second side plate (19).

14. An air conditioner according to claim 13, wherein the number of the second air openings (12) is two, one of the second air openings (12) is provided on the first side plate (18), the other second air opening (12) is provided on the second side plate (19), and the two second air openings (12) are spaced apart by the front panel (17).

15. The air conditioner according to claim 1, wherein a second flow guiding device is arranged in an air duct between the heat exchanger (14) and the fan, the second flow guiding device comprises a flow guiding ring (1) and a flow guiding plate (2) arranged in the flow guiding ring (1), the flow guiding plate (2) extends along the axial direction of the flow guiding ring (1), two sides of the flow guiding plate (2) are connected to the inner wall of the flow guiding ring (1), and the flow guiding plate (2) divides a flow guiding channel of the flow guiding ring (1) into at least two flow guiding areas.