Crossflow fan and air conditioner having the same

Abstract

The present invention discloses a cross-flow fan and an air conditioner having the same. The cross-flow fan comprises: an impeller, which is a cylindrical structure; the impeller comprises a plurality of blades and a first mounting seat and a second mounting seat arranged on both sides of the plurality of blades; the plurality of blades are circumferentially distributed around the central axis of the impeller; the first mounting seat is connected to one end of the plurality of blades to form the first end of the cylindrical structure, and the second mounting seat is connected to the other end of the plurality of blades to form the second end of the cylindrical structure, wherein the second mounting seat is formed with a fan blade air inlet; an air guide structure, the air guide structure is arranged inside the cylindrical structure, and the air guide structure has an air guide wall that guides the incoming air to form an acute angle and / or a zero angle with the radial direction of the cylindrical structure.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioners, and in particular to a cross-flow fan and an air conditioner having the same. Background Art

[0002] At present, the indoor unit of the existing wall-mounted air conditioner generally inhales air from the air inlet above, then pressurizes it through the evaporator heat exchange and the air duct system, and finally blows it out from the air outlet below, so as to achieve the normal cooling, heating and air supply functions of the air conditioner. The existing wall-mounted air conditioner generally adopts a cross-flow duct system, which is mainly composed of cross-flow fan blades, fan blade motors, bottom shells, volute tongues, bearing rubber rings and other parts; the cross-flow fan blades are straight-cylinder structures, with both ends designed as closed end faces, and the outer ring of the fan blades is a grille-type blade distributed circumferentially along the fan blade axis; the bottom of the bottom shell is designed with a curved surface structure that envelops the cross-flow fan blades, and an air outlet for guiding the outlet air flow; the volute tongue is a long strip angular structure, and one side is designed as a curved surface that envelops the cross-flow fan blades. The volute tongue can pressurize the air flow in the air duct system through the curved surface structure. The volute tongue is fixedly installed on the bottom shell through multiple sets of buckles, and guides the outlet air flow together with the bottom shell outlet. Although the existing wall-mounted air conditioner has a relatively simple air duct structure and a high fan efficiency, it is limited by the air inlet and outlet method of the crossflow fan blades and the air inlet and outlet structure of the air duct system. The air conditioner can only take in air from the top and deliver air from the air outlet below. It is unable to effectively increase the air inlet area and air volume of the air conditioner, and improve the air supply method of the air conditioner and the user's comfort experience. Summary of the invention

[0003] In view of this, the present invention discloses a cross-flow fan and an air conditioner having the same, which are used to at least solve the problem of the existing air conditioner having limited air intake and affecting the air outlet effect.

[0004] In order to achieve the above-mentioned object, the present invention adopts the following technical solution:

[0005] The present invention discloses a cross flow fan, characterized in that the cross flow fan comprises:

[0006] The impeller is a cylindrical structure;

[0007] The impeller comprises a plurality of blades and a first mounting seat and a second mounting seat which are arranged at two ends of the plurality of blades in a relative manner;

[0008] The plurality of blades are circumferentially distributed around the central axis of the impeller;

[0009] The first mounting seat is connected to one end of the plurality of blades to form a first end of the cylindrical structure, and the second mounting seat is connected to the other end of the plurality of blades to form a second end of the cylindrical structure, wherein the second mounting seat is formed with a fan blade air inlet, and the fan blade air inlet allows the incoming air to flow axially into the interior of the cylindrical structure;

[0010] The wind guide structure is arranged inside the cylindrical structure, and has a wind guide wall formed around the axis of the cylindrical structure. The wind guide wall guides the incoming air along the radial direction of the cylindrical structure or in a direction forming an angle of 0 to 90 degrees with the radial direction of the cylindrical structure.

[0011] The wind guiding structure is arranged inside the cylindrical structure, and the wind guiding structure has a wind guiding wall that guides the incoming wind to form an acute angle and / or a zero angle with the radial direction of the cylindrical structure.

[0012] Further optionally, the first end of the wind guide structure is fixed on the first mounting seat, and the second end of the wind guide structure extends toward the second mounting seat;

[0013] Wherein, along the direction from the first end of the wind guiding structure to the second end of the wind guiding structure, the diameter of the outer peripheral wall of the wind guiding structure gradually decreases to form the wind guiding wall.

[0014] Further optionally, the air guide structure adopts a conical cylindrical structure, and a conical seat of the conical cylindrical structure is connected to the first mounting seat, and the conical tip of the conical cylindrical structure faces the second mounting seat.

[0015] Further optionally, wind guide ribs are provided on the conical surface of the conical cylindrical structure, and the wind guide ribs are spirally extended along the cone tip toward the cone seat, and the spiral extension direction of the wind guide ribs is opposite to the rotation direction of the crossflow fan.

[0016] Further optionally, a drive shaft mounting hole is provided at the second end of the air guide structure; and a first axial hole coaxial with the drive shaft mounting hole is provided on the first mounting seat.

[0017] Further optionally, the second mounting seat is provided with a protruding shaft structure,

[0018] The extended shaft structure is coaxially arranged with the drive shaft mounting hole and is used to be mounted to the corresponding external bearing rubber ring through-hole shaft to provide limiting support for the crossflow fan.

[0019] A second aspect of the present invention discloses an air conditioner, comprising: at least one cross-flow fan as described in any one of the above.

[0020] Further optionally, the air conditioner comprises:

[0021] A shell, wherein a first air inlet is provided on the left side of the shell, a second air inlet is provided on the right side of the shell, and an air outlet is provided on the front and / or top and / or bottom of the shell;

[0022] Two cross-flow fans are coaxially arranged on the left and right sides inside the shell, wherein the blade air inlet of one of the cross-flow fans is connected to the first air inlet correspondingly, and the blade air inlet of the other cross-flow fan is connected to the second air inlet correspondingly.

[0023] Further optionally, the air conditioner further comprises: a driving assembly arranged between the two crossflow fans,

[0024] The driving assembly includes: a fan blade motor; a first transmission shaft, one end of which is connected to the left side of the fan blade motor and the other end is assembled with the drive shaft mounting hole of one of the cross-flow fans; a second transmission shaft, one end of which is connected to the right side of the fan blade motor and the other end is assembled with the drive shaft mounting hole of another cross-flow fan.

[0025] Further optionally, the air conditioner further includes:

[0026] A first guide ring is arranged at the first air inlet, the first guide ring is provided with a first air passage with a gradually decreasing diameter, and the end with a smaller diameter of the first air passage faces the fan blade air inlet of the corresponding crossflow fan; and / or,

[0027] A second guide ring is arranged at the second air inlet, and the second guide ring is provided with a second air passage with a gradually decreasing diameter, and the end of the second air passage with a smaller diameter faces the fan blade air inlet of the corresponding crossflow fan.

[0028] Further optionally, the air conditioner further comprises: an evaporator,

[0029] The evaporator is formed with multiple sections of bent structures around the circumferential direction of the impeller, and at least one wind guide curved surface structure is provided on a side of the evaporator close to the impeller;

[0030] The wind guide curved surface structure is used to cooperate with the bottom shell of the housing to block and pressurize part of the airflow guided out by the cross-flow fan so that the airflow is sent out from the air outlet on the bottom shell.

[0031] Further optionally, the evaporator includes a first evaporator, a second evaporator, a third evaporator and a fourth evaporator connected in sequence,

[0032] The first evaporator and the second evaporator are located above the cross-flow fan, the third evaporator is located in front of the cross-flow fan, and the fourth evaporator is located between the bottom shell and the cross-flow fan.

[0033] There are two wind guide curved surface structures, which are respectively arranged on the second evaporator and the fourth evaporator.

[0034] Further optionally, the wind guide curved surface structure forms a wedge-shaped cross section in the radial cross-section direction of the impeller.

[0035] The wind-guiding curved surface structure arranged on the second evaporator has a wide end of its wedge-shaped cross-section close to the third evaporator side, and a narrow end of its wedge-shaped cross-section close to the first evaporator side; the wind-guiding curved surface structure arranged on the fourth evaporator has a wide end of its wedge-shaped cross-section located on the side away from the third evaporator, and a narrow end of its wedge-shaped cross-section located on the side close to the third evaporator.

[0036] Further optionally, the wide end of the wedge-shaped cross-section adopts an outwardly convex arc surface.

[0037] Beneficial effect: The present invention improves the structure of the air conditioner and designs a new cross-flow fan, which can not only realize the air intake function on the left and right sides of the air conditioner, effectively utilize and improve the side air intake area and air intake volume of the air conditioner, but also can realize the multi-outlet air supply function of the air conditioner by designing a new evaporator and a multi-directional air outlet structure of the air conditioner, improve the air supply mode of the air conditioner and enhance the user's comfort experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] The above and other objects, features and advantages of the present invention will become more apparent by describing in detail its exemplary embodiments with reference to the accompanying drawings. The accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other accompanying drawings can be obtained based on these accompanying drawings without creative work.

[0039] Figure 1 An exploded view of the overall structure of an air conditioner according to an embodiment is shown;

[0040] Figure 2 An exploded view of an air conditioner without a front panel structure according to an embodiment is shown;

[0041] Figure 3 A schematic diagram of the air inlet flow direction of an air conditioner according to an embodiment is shown;

[0042] Figure 4 Shows Figure 3 Middle AA section;

[0043] Figure 5 Shows Figure 3 Middle BB cross section;

[0044] Figure 6 Shows Figure 5 Enlarged view of parts C and D in the middle;

[0045] Figure 7 Shows Figure 4 Enlarged view of middle E part;

[0046] Figure 8 A schematic diagram of a crossflow blower according to an embodiment is shown;

[0047] Fig. 9 A schematic diagram of the structure of a guide ring according to an embodiment is shown.

[0048] In the figure: 1. panel body; 2. evaporator; 21. first evaporator; 22. second evaporator; 23. third evaporator; 24. fourth evaporator; 241. wide end of wedge-shaped cross section; 242. narrow end of wedge-shaped cross section; 3. second bearing rubber ring; 4. second guide ring; 5. second crossflow fan; 6. bottom shell; 7. lower air guide plate assembly; 8. fan blade motor; 9. first crossflow fan; 10. motor pressure plate; 11. first guide ring; 111. first air passage; 112. concave hole structure; 113. through hole structure; 12. first bearing rubber ring; 13. upper air guide plate assembly; 14. second end of tubular structure; 15. first end of tubular structure. DETAILED DESCRIPTION

[0049] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0050] The terms used in the embodiments of the present invention are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. The singular forms "a", "said" and "the" used in the embodiments of the present invention and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings, and "multiple" generally includes at least two, but does not exclude the inclusion of at least one.

[0051] It should be understood that the term "and / or" used in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0052] It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a product or system including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such a product or system. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the product or system including the elements.

[0053] At present, the air inlet of the existing air conditioner is set at the top of the air conditioner, and its air inlet is easily affected by the area and position of the air inlet, resulting in poor overall air supply effect of the air conditioner. The present invention improves the cross-flow fan and can be applied to air conditioners with air inlet on the left and right sides, and can also realize up and down air outlet control, thereby improving the air supply mode of the air conditioner and enhancing the user's comfort experience.

[0054] To further illustrate the technical solution of the present invention, Figure 1-Figure 9 As shown, the indoor unit of the air conditioner is taken as an example for explanation, and the following specific embodiments are provided accordingly.

[0055] like Figure 1-Figure 4 and Figure 8 As shown, in this embodiment, an air conditioner is provided, and the air conditioner includes:

[0056] A housing, a first air inlet is provided on the left side of the housing, a second air inlet is provided on the right side of the housing, and air outlets are provided at the front and / or top and / or bottom of the housing;

[0057] Two crossflow fans are coaxially arranged inside the housing, wherein the fan blade air inlet of one crossflow fan is connected to the first air inlet, and the fan blade air inlet of the other crossflow fan is connected to the second air inlet;

[0058] And a driving assembly arranged between the two cross-flow fans, the driving assembly includes: a fan blade motor 8; a first transmission shaft, one end of which is connected to the left side of the fan blade motor 8, and the other end is assembled with the driving shaft mounting hole of one cross-flow fan; a second transmission shaft, one end of which is connected to the right side of the fan blade motor 8, and the other end is assembled with the driving shaft mounting hole of another cross-flow fan.

[0059] In some optional embodiments, the air conditioner further includes a guide ring arranged at the air outlet. Preferably, the air conditioner includes: a first guide ring 11 arranged at the first air inlet, the first guide ring 11 is provided with a first air passage 111 with a gradually decreasing diameter, and the end of the first air passage 111 with a smaller diameter faces the fan blade air inlet of the corresponding cross-flow fan; and / or, a second guide ring 4 is arranged at the second air inlet, the second guide ring 4 is provided with a second air passage 111 with a gradually decreasing diameter, and the end of the second air passage 111 with a smaller diameter faces the fan blade air inlet of the corresponding cross-flow fan. Specifically, as Fig. 9 The figure shows the parts diagram of the guide ring of the wall-mounted air conditioner. Preferably: the guide ring is designed as a trumpet-shaped structure, and the trumpet-shaped constriction faces the fan blade, and a group of through holes are designed in the middle for assembly with the bearing rubber ring through the hole shaft, and the outer ring of the guide ring is designed with multiple groups of concave hole structures 112 for assembly with the elbow of the evaporator 2; the guide ring plays the role of sealing the air duct by assembling with the bottom shell 6, and the trumpet-shaped structure can guide the air flow entering from the outside of the air conditioner.

[0060] Specific: such as Figure 1 , Figure 2 As shown, it is a general exploded view of a wall-mounted air conditioner. The air conditioner in this embodiment mainly includes: a panel body 1, an evaporator 2, a second bearing rubber ring 3, a second guide ring 4, a second crossflow fan 5, a bottom shell 6, a lower air guide plate assembly 7, a fan motor 8, a first crossflow fan 9, a motor pressure plate 10, a first guide ring 11, a first bearing rubber ring 12, and an upper air guide plate assembly 13, wherein the bottom shell and the panel body 1 are surrounded to form the main part of the air conditioner housing. The structures of the second bearing rubber ring 3 and the first bearing rubber ring 12 are completely consistent, the structures of the second guide ring 4 and the first guide ring are mirror-symmetrical structures, and the structures of the second crossflow fan 5 and the first crossflow fan 9 are completely consistent. The motor pressure plate covers the fan motor and is fixed to the bottom shell with screws. The panel body 1 is designed with air inlet grilles on the left and right sides, and there are air outlets designed to guide the airflow on the top and bottom. The panel body 1 is fixed to the bottom shell with buckles and screws; the upper air guide plate assembly 13 and the lower air guide plate assembly 7 are assembled on the panel body 1 with a hole-shaft fit at one end and a shaft-hole fit at the other end. The air guide plate assembly is mainly used to guide the airflow. When the air conditioner is running, the fan motor of the air conditioner drives the fan blades to rotate, and forms a negative pressure inside the cylindrical structure surrounded by the fan blades, so that the air outside the air conditioner forms an air inlet airflow, and passes through the air inlet grilles and guide rings on the left and right sides of the air conditioner panel body 1 into the inside of the air conditioner shell. The air inlet airflow is guided by the fan blades and the heat exchange pressure of the evaporator 2, and finally forms an air outlet airflow that is blown out from the air outlet of the panel body 1 of the air conditioner, so that the air inlet on the left and right sides of the air conditioner is realized, and the air outlet in multiple directions is realized.

[0061] In some alternative embodiments, such as Figure 8 As shown, the crossflow fan includes: an impeller, which is a cylindrical structure. The impeller includes a plurality of blades and a first mounting seat and a second mounting seat relatively arranged at both ends of the plurality of blades. The plurality of blades are distributed around the central axis of the crossflow fan to form a cylindrical shape; the first mounting seat and the second mounting seat are relatively arranged, the first mounting seat is connected to one end of the plurality of blades to form a first end 15 of the cylindrical structure, and the second mounting seat is connected to the other end of the plurality of blades to form a second end 14 of the cylindrical structure, wherein the second mounting seat forms a fan blade air inlet; an air guide structure, the air guide structure is arranged inside the cylindrical structure, and the air guide structure has an air guide wall that guides the incoming air to an acute angle and / or a zero angle with the radial direction of the cylindrical structure. Based on a special air guide structure, the crossflow fan can suck in the supply air from the air inlet arranged in the axial direction and send it out in a radial or nearly radial direction.

[0062] Specifically, the first end of the wind guide structure is fixed on the first mounting seat, and the second end of the wind guide structure extends toward the second mounting seat; wherein the diameter of the outer peripheral wall of the wind guide structure gradually decreases along the direction from the first end of the wind guide structure to the second end of the wind guide structure to form an wind guide wall. Preferably, the wind guide structure adopts a conical cylindrical structure, the conical seat of the conical cylindrical structure is connected to the first mounting seat, and the conical tip of the conical cylindrical structure faces the second mounting seat. The second end of the wind guide structure is provided with a drive shaft mounting hole; the first mounting seat is provided with a first shaft hole coaxial with the drive shaft mounting hole. The second mounting seat is provided with an extended shaft structure. The extended shaft structure is coaxially arranged with the drive shaft mounting hole, and is used to be installed to the corresponding external bearing rubber ring through the hole shaft to provide limiting support for the crossflow fan. The wind guide wall formed by the conical cylindrical structure guides the incoming air along the radial direction of the cylindrical structure or in a direction forming an angle of 0 to 90° with the radial direction of the cylindrical structure.

[0063] The cylindrical structure formed by the multiple blades of the cross-flow fan can be designed as a straight cylindrical structure, or a trumpet-shaped structure that tapers from the second end 14 of the cylindrical structure to the first end 15 of the cylindrical structure.

[0064] like Figure 8 As shown, when the crossflow fan in the air conditioner adopts a straight-cylinder structure, one end face of the fan blade is designed as an open face and has a protruding shaft structure so as to be assembled with the bearing rubber ring through the hole shaft, and the other end face of the fan blade is designed as a streamlined wind guide wall, and a drive shaft mounting hole for assembling with the transmission shaft (the first transmission shaft and the second transmission shaft) is designed at the cone tip of the wind guide wall. The outer side of the crossflow fan is designed as a plurality of grille-type blades distributed circumferentially along the axis of the crossflow fan; transmission shafts are extended on both sides of the fan blade motor, which can be assembled with the drive shaft mounting hole on the fan blade wind guide wall; a new type of envelope is designed under the bottom shell The curved surface structure of the fan blade, the air outlet for guiding the outlet air flow, and the bottom shell are basically symmetrical on the left and right; the guide ring is designed as a trumpet-shaped structure, and the trumpet-shaped contraction faces the new fan blade. A group of through-hole structures 113 are also designed in the middle for assembly with the bearing rubber ring through the hole shaft. The outer ring of the guide ring is designed with multiple groups of concave hole structures 112 for assembly with the elbow of the evaporator 2. The guide ring mainly plays the role of closing the air duct and draining; the inner side of the evaporator 2 is designed with a convex curved surface structure, which is mainly used to pressurize the airflow in the air duct system, and guide the outlet airflow together with the bottom shell to realize multi-directional air outlet of the air conditioner.

[0065] like Figure 2-Figure 7As shown in the figure, the fan motor is placed in the motor slot of the bottom shell; one end of the air guide wall of the crossflow fan is assembled with the fan motor by using a hole-shaft combination; as shown in the partial enlarged figure E, the guide ring is assembled with the bearing rubber ring through the middle through-hole structure 113 through the hole-shaft combination, and the other end face of the new fan blade is assembled with the bearing rubber ring through the hole-shaft combination using an extended shaft structure; when the air conditioner is running, the fan motor drives the new fan blade to rotate and forms a negative pressure inside the new fan blade, so that the air outside the air conditioner forms an intake airflow and enters the air duct system through the guide rings on the left and right sides of the air conditioner. Figure 5-Figure 7 As shown, the partial enlarged views C and D are enlarged views of the curved surface structure protruding from the inner side of the evaporator 2. The inlet airflow is guided by the new fan blades, heat exchanged with the evaporator 2 and pressurized by the curved surface structure protruding from the inner side, and finally forms an outlet airflow that is blown out from the air outlet of the air conditioner. The present invention can not only realize the air intake function on the left and right sides of the air conditioner, effectively utilize and improve the air intake area and air intake volume on the side of the air conditioner, but also realize the multi-outlet air supply function of the air conditioner by designing the multi-directional air outlet structure of the evaporator 2 and the air conditioner, improve the air supply mode of the air conditioner and enhance the user's comfort experience.

[0066] In some alternative ways, such as Figure 5 , Figure 6 As shown, the evaporator 2 is formed with multiple sections of bent structures around the circumferential direction of the impeller, and at least one wind-guiding curved surface structure is provided on the side of the evaporator 2 close to the impeller; the wind-guiding curved surface structure is used to cooperate with the bottom shell of the shell to block and pressurize part of the airflow discharged by the cross-flow fan so that the airflow is sent out from the air outlet on the bottom shell.

[0067] Preferably, the evaporator 2 includes a first evaporator 21, a second evaporator 22, a third evaporator 23 and a fourth evaporator 24 which are connected in sequence, the first evaporator 21 and the second evaporator 22 are located above the cross-flow fan, the third evaporator 23 is located in front of the cross-flow fan, and the fourth evaporator 24 is located between the bottom shell and the cross-flow fan, wherein there are two air-guiding curved surface structures, which are respectively provided on the second evaporator and the fourth evaporator.

[0068] Preferably, the wind guide curved surface structure forms a wedge-shaped cross section in the radial cross section direction of the impeller, wherein the wind guide curved surface structure provided on the second evaporator 22 has a wide end of its wedge-shaped cross section close to the third evaporator 23, and a narrow end of its wedge-shaped cross section close to the first evaporator 21; the wind guide curved surface structure provided on the fourth evaporator has a wide end 241 of its wedge-shaped cross section located on the side away from the third evaporator 23, and a narrow end 242 of its wedge-shaped cross section located on the side close to the third evaporator 23. Further preferably, the wide end 241 of the wedge-shaped cross section adopts an arcuate surface convex outward.

[0069] like Figure 8As shown, in this embodiment, when multiple fan blades are surrounded by a straight cylindrical structure, the two ends are fixed by two mounting seats, and one end face of the fan blade is designed as an open face with a protruding shaft structure so as to be assembled with the bearing rubber ring through the hole shaft. Figure 8 As shown in the cross-sectional view AA, the other end face of the fan blade is designed as a streamlined wind guide wall, wherein the partial enlarged view B is an enlarged view of the top structure of the wind guide wall, and a hole structure for assembling with the fan blade motor shaft is designed at the top of the wind guide wall. The outer side of the new fan blade is designed as a grille-type blade distributed circumferentially along the fan blade axis; the fan blade motor drives the new fan blade to rotate, and forms a negative pressure inside the new fan blade, so that the air outside the air conditioner forms an intake airflow, and the wind guide wall at one end of the new fan blade can play a role in guiding the airflow entering the air duct system, so that the airflow organization can completely run through the entire air duct.

[0070] Further optionally, in order to enhance the disturbance suction of the airflow, wind guide ribs are provided on the conical surface of the conical cylindrical structure, and the wind guide ribs extend spirally from the cone tip toward the cone seat, and the spiral extension direction of the wind guide ribs is opposite to the rotation direction of the cross-flow fan.

[0071] It should be noted that when the air conditioner is running, the fan motor drives the new fan blade to rotate and forms a negative pressure inside the new fan blade, so that the air outside the air conditioner forms an inlet airflow, and enters the air duct system through the guide rings on the left and right sides of the air conditioner. The inlet airflow is guided by the new fan blade and pressurized by the heat exchange of the evaporator 2, and finally forms an outlet airflow and blows out from the air outlet of the air conditioner. Since the air conditioner in this embodiment has a special cross-flow fan, a new air duct system is designed for the air conditioner based on the cross-flow fan, which can not only realize the air intake function on the left and right sides of the air conditioner, effectively utilize and improve the air intake area and air intake volume of the side of the air conditioner, but also realize the multi-outlet air supply function of the air conditioner by designing the multi-directional air outlet structure of the evaporator and the air conditioner, improve the air supply method of the air conditioner and improve the user's comfort experience.

[0072] The exemplary embodiments of the present disclosure are specifically shown and described above. It should be understood that the present disclosure is not limited to the detailed structures, configurations or implementations described herein; on the contrary, the present disclosure is intended to cover various modifications and equivalent configurations included in the spirit and scope of the appended claims.

Claims

1. A crossflow fan, It is characterized in that The crossflow fan comprises: The impeller is a cylindrical structure; The impeller comprises a plurality of blades and a first mounting seat and a second mounting seat which are arranged at two ends of the plurality of blades in a relative manner; The plurality of blades are circumferentially distributed around the central axis of the impeller; The first mounting seat is connected to one end of the plurality of blades to form a first end of the cylindrical structure, and the second mounting seat is connected to the other end of the plurality of blades to form a second end of the cylindrical structure, wherein the second mounting seat is formed with a fan blade air inlet, and the fan blade air inlet allows the incoming air to flow axially into the interior of the cylindrical structure; An air guide structure, the air guide structure is arranged inside the cylindrical structure, and has an air guide wall formed around the axis of the cylindrical structure, the air guide wall guides the incoming air along the radial direction of the cylindrical structure or in a direction forming an angle of 0 to 90 degrees with the radial direction of the cylindrical structure; The first end of the wind guide structure is fixed on the first mounting seat, and the second end of the wind guide structure extends toward the second mounting seat; wherein the diameter of the outer peripheral wall of the wind guide structure gradually decreases along the direction from the first end of the wind guide structure to the second end of the wind guide structure to form the wind guide wall; the wind guide structure adopts a conical cylindrical structure, the conical seat of the conical cylindrical structure is connected to the first mounting seat, and the conical tip of the conical cylindrical structure faces the second mounting seat; The second end of the air guide structure is provided with a drive shaft mounting hole; the first mounting seat is provided with a first shaft hole coaxial with the drive shaft mounting hole; The second mounting seat is provided with a protruding shaft structure, which is coaxially arranged with the drive shaft mounting hole and is used for being mounted to the corresponding external bearing rubber ring through-hole shaft to provide limiting support for the crossflow fan.

2. The crossflow fan according to claim 1, It is characterized in that The conical surface of the conical cylindrical structure is provided with air guiding ribs, which extend spirally along the cone tip toward the cone seat, and the spiral extension direction of the air guiding ribs is opposite to the rotation direction of the crossflow fan.

3. An air conditioner, It is characterized in that The air conditioner comprises: at least one cross-flow fan according to any one of claims 1-2.

4. The air conditioner according to claim 3, It is characterized in that The air conditioner comprises: A shell, wherein a first air inlet is provided on the left side of the shell, a second air inlet is provided on the right side of the shell, and an air outlet is provided on the front and / or top and / or bottom of the shell; Two cross-flow fans are coaxially arranged on the left and right sides inside the shell, wherein the blade air inlet of one of the cross-flow fans is connected to the first air inlet correspondingly, and the blade air inlet of the other cross-flow fan is connected to the second air inlet correspondingly.

5. The air conditioner according to claim 4, It is characterized in that The air conditioner further comprises: a driving assembly disposed between the two crossflow fans, The driving assembly includes: a fan blade motor; a first transmission shaft, one end of which is connected to the left side of the fan blade motor and the other end is assembled with the drive shaft mounting hole of one of the cross-flow fans; a second transmission shaft, one end of which is connected to the right side of the fan blade motor and the other end is assembled with the drive shaft mounting hole of another cross-flow fan.

6. The air conditioner according to claim 5, It is characterized in that The air conditioner also includes: A first guide ring is arranged at the first air inlet, the first guide ring is provided with a first air passage with a gradually decreasing diameter, and the end with a smaller diameter of the first air passage faces the fan blade air inlet of the corresponding crossflow fan; and / or, A second guide ring is arranged at the second air inlet, and the second guide ring is provided with a second air passage with a gradually decreasing diameter, and the end of the second air passage with a smaller diameter faces the fan blade air inlet of the corresponding crossflow fan.

7. The air conditioner according to claim 6, It is characterized in that The air conditioner further comprises: an evaporator, The evaporator is formed with multiple sections of bent structures around the circumferential direction of the impeller, and at least one wind guide curved surface structure is provided on a side of the evaporator close to the impeller; The wind guide curved surface structure is used to cooperate with the bottom shell of the housing to block and pressurize part of the airflow guided out by the cross-flow fan so that the airflow is sent out from the air outlet on the bottom shell.

8. The air conditioner according to claim 7, It is characterized in that The evaporator comprises a first evaporator, a second evaporator, a third evaporator and a fourth evaporator which are connected in sequence. The first evaporator and the second evaporator are located above the cross-flow fan, the third evaporator is located in front of the cross-flow fan, and the fourth evaporator is located between the bottom shell and the cross-flow fan. There are two wind guide curved surface structures, which are respectively arranged on the second evaporator and the fourth evaporator.

9. The air conditioner according to claim 8, It is characterized in that The wind-guiding curved surface structure forms a wedge-shaped cross section in the radial cross section direction of the impeller. The wind-guiding curved surface structure arranged on the second evaporator has a wide end of its wedge-shaped cross-section close to the third evaporator side, and a narrow end of its wedge-shaped cross-section close to the first evaporator side; the wind-guiding curved surface structure arranged on the fourth evaporator has a wide end of its wedge-shaped cross-section located on the side away from the third evaporator, and a narrow end of its wedge-shaped cross-section located on the side close to the third evaporator.

10. The air conditioner according to claim 9, It is characterized in that The wide end of the wedge-shaped cross section adopts an outwardly convex arc surface.

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