Central air-conditioning air guide fan

Abstract

The utility model discloses an air guide fan of a central air conditioner, and relates to the field of air conditioner accessories. Comprising a fan head and a rotating shaft assembly connected with the fan head, and a plurality of flow guide fan blades and a plurality of air return fan blade sets are arranged on the fan head along the circumferential side. The flow guide fan blades drive the fan head to rotate in the circumferential direction of the rotating shaft assembly and enable the air return fan blade set to form air flow blowing towards the air return opening of the air conditioner, a large amount of generated air enters the air return opening of the air conditioner, the interior of the air conditioner does not need to consume a large amount of energy for air return, energy consumption is reduced, the flow guide fan blades evenly guide and disperse air at the air outlet of the air conditioner, and the service life of the air conditioner is prolonged. And direct blowing is prevented.

Description

Technical Field

[0001] This utility model relates to the field of air conditioning accessories, and in particular to a central air conditioning deflector fan. Background Technology

[0002] Central air conditioning, as a highly efficient, comfortable, and aesthetically pleasing air conditioning system, is widely used in various building types. Its complex system composition and diverse classification methods meet the air conditioning requirements of different environments and needs. However, central air conditioning systems typically have a large air volume and a single air outlet direction, which can easily lead to localized overcooling or overheating, making them unsuitable for use and resulting in a poor user experience.

[0003] The prior art disclosed in CN 211345522 U is an auxiliary guide fan for an air conditioner exhaust vent. This utility model uses the guide fan blades to evenly guide and disperse the airflow from the air conditioner exhaust vent, preventing direct blowing. However, this utility model does not include a return air device. The lack of a return air device leads to a significant loss of air conditioner energy, which is not conducive to energy conservation. Utility Model Content

[0004] This utility model aims to overcome the shortcomings of existing central air conditioning duct fans that do not have a return air device. The lack of a return air device leads to a large loss of air conditioning energy, which is not conducive to energy saving. Therefore, this utility model provides a central air conditioning duct fan.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A central air conditioning deflector fan includes a fan head and a rotating shaft assembly connected to the fan head. The fan head is provided with a return fan blade group and a plurality of guide fan blades along its circumference. When the air conditioner blows the guide fan blades, the guide fan blades drive the fan head to rotate circumferentially along the rotating shaft assembly and cause the return fan blade group to form an airflow blowing towards the air conditioner return air inlet.

[0007] As described above, in a central air conditioning fan, a plurality of the guide fan blades are distributed along the outer periphery of the return fan blade assembly.

[0008] As described above, in the central air conditioning fan, the end of the air guide blade away from the fan head is provided with an air guide wedge. The air guide wedge is curved, and the distance from one end of the air guide wedge to the fan head is greater than the distance from the other end of the air guide wedge to the fan head.

[0009] As described above, the central air conditioning fan has multiple guide strips on the upper surface of the guide blades, and the guide strips are spaced apart from one end near the guide plate to one end near the fan head.

[0010] The central air conditioning guide fan as described above includes a fixing assembly fixed to the fan head. The fixing assembly includes a fixing rod. One end of the fixing rod extends to the outside of the return fan blade assembly and is fixed to the guide fan blade. A fixing post is provided at one end of the fixing rod away from the guide fan blade. One end of the fan head is provided with an upper cover. The upper cover and the fan head cooperate to form a fixing groove. The fixing groove cooperates with the fixing post for fixation.

[0011] As described above, the central air conditioning fan has a limiting post on the side wall of the fixed column. The fixed groove includes a limiting channel at the bottom of the fixed groove and a limiting opening on the side wall of the fixed groove. A protrusion is provided on the side wall of the limiting opening. The limiting channel communicates with the limiting opening. When the limiting post moves along the limiting channel to the limiting opening, the protrusion cooperates with the limiting post to fix it.

[0012] As described above, in the central air conditioning fan, the rotating shaft assembly includes a connecting rod, and a sleeve is provided on the fan head. The connecting rod is sleeved on the sleeve to allow the fan head to rotate circumferentially along the connecting rod.

[0013] As described above, the central air conditioning fan shaft assembly further includes a bearing sleeved on the connecting rod, with the outer ring of the bearing engaging and fixed to the inner wall of the sleeve.

[0014] As described above, the central air conditioning fan has two bearings, which are respectively located at both ends of the sleeve.

[0015] As described above, the central air conditioning duct fan has a hanging assembly at one end of the rotating shaft assembly away from the fan head. The hanging assembly includes an upper mounting base and a locking member that can move axially along the rotating shaft assembly. The upper mounting base and the locking member cooperate to clamp and fix the central air conditioning duct fan to the central air conditioning unit.

[0016] Compared with existing technologies, the beneficial effects of this technical solution are as follows:

[0017] 1. With the structure of this utility model, since the fan head is equipped with multiple guide fan blades and return fan blade groups, when the air from the air conditioner outlet blows the guide fan blades, the guide fan blades drive the fan head to rotate circumferentially along the rotating shaft assembly and make the return fan blade group form an airflow blowing towards the air conditioner return air inlet. The generated air enters the air conditioner return air inlet in large quantities, so that the air conditioner does not need to consume a lot of energy for return air, saving energy consumption. In addition, the guide fan blades evenly guide and disperse the air from the air conditioner outlet, preventing direct blowing.

[0018] 2. With the adoption of the structure of this utility model, due to the use of a double bearing structure, the fan head rotates more smoothly when it rotates axially relative to the rotating shaft assembly.

[0019] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is an exploded view of the present invention;

[0022] Figure 2 This is a cross-sectional view of the present invention;

[0023] Figure 3 This is a schematic diagram of the fan head structure of this utility model;

[0024] Figure 4 yes Figure 3 A partial structural diagram;

[0025] Figure 5 This is a schematic diagram of the flow guide fan blade structure of this utility model. Figure 1 ;

[0026] Figure 6 This is a schematic diagram of the flow guide fan blade structure of this utility model. Figure 2 ;

[0027] Figure 7 This is a schematic diagram of the upper cover structure of this utility model;

[0028] Figure 8 yes Figure 7 A partial structural diagram of B;

[0029] Figure 9 This is a schematic diagram of the three-dimensional structure of this utility model. Figure 1 ;

[0030] Figure 10 This is a schematic diagram of the three-dimensional structure of this utility model. Figure 2 ;

[0031] Figure 11 This is a three-dimensional structural diagram of the present invention installed in a central air conditioning system. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] like Figures 1 to 11 The central air conditioning deflector fan shown includes a fan head 1 and a rotating shaft assembly 3 connected to the fan head 1. The fan head 1 is provided with a return fan blade assembly 11 and multiple guide fan blades 2 along its circumference. When the air conditioner blows the guide fan blades 2, the guide fan blades 2 drive the fan head 1 to rotate circumferentially along the rotating shaft assembly 3, causing the return fan blade assembly 11 to form a wind directed towards the air conditioner return air inlet 61. With the structure of this utility model, since the fan head is provided with guide fan blades and return fan blade assembly, when the air from the air conditioner outlet 62 blows the guide fan blades, the guide fan blades 2 drive the fan head 1 to rotate circumferentially along the rotating shaft assembly 3, causing the return fan blade assembly 11 to form a wind directed towards the air conditioner return air inlet 61. The generated air enters the air conditioner return air inlet in large quantities, so that the air conditioner does not need to consume a lot of energy for return air, saving energy consumption. In addition, the guide fan blades evenly guide and disperse the air from the air conditioner outlet, preventing direct blowing.

[0034] Furthermore, multiple guide fan blades 2 are distributed along the outer periphery of the return fan blade assembly 11. Additionally, the return fan blade assembly 11 can be configured as a detachable structure, allowing for replacement if damaged.

[0035] As a specific implementation method and not a limitation, in order to match the air conditioner and ensure that the guide fan blades can evenly guide and disperse the airflow from the air conditioner's outlet, a fixing component 4 is included, which is fixed to the fan head 1. The fixing component 4 includes a fixing rod 41, one end of which extends to the outside of the return fan blade assembly 11 and is fixed to the guide fan blade 2. One end of the fixing component 4 is fixed to the fan head 1, and the other end is fixed to the guide fan blade 2. The guide fan blade 2 is positioned directly opposite the air conditioner's outlet 62, so that when the air conditioner is started, the airflow from the air conditioner's outlet 62 can blow the guide fan blade 2, thereby evenly guiding and dispersing the airflow and preventing direct blowing.

[0036] Furthermore, to facilitate the fixing or disassembly of the guide fan blade 2, a fixing post 42 is provided at one end of the fixing rod 41 away from the guide fan blade 2, and an upper cover 13 is provided at one end of the fan head 1. The upper cover 13 and the fan head 1 cooperate to form a fixing groove 14, and the fixing groove 14 cooperates with the fixing post 42 for fixation. A limiting post 421 is provided on the side wall of the fixing post 42. The fixing groove 14 includes a limiting channel 141 at the bottom of the fixing groove 14 and a limiting opening 142 on the side wall of the fixing groove 14. A protrusion 1421 is provided on the side wall of the limiting opening 142. The limiting channel 141 communicates with the limiting opening 142. When the limiting post 421 moves along the limiting channel 141 to the limiting opening 142, the protrusion 1421 cooperates with the limiting post 421 for fixation. The fan head 1 has multiple mounting slots 14 for mounting multiple guide fan blades 2. For quick installation of the guide fan blades 2, simply align the limiting post 421 on the mounting post 42 with the limiting channel 141 on the mounting slot 14 and insert it into the mounting slot 14. When the limiting post 421 moves to align with the limiting port 142, rotate the mounting post 42 to engage and fix the limiting post 421 with the limiting port 142, preventing the mounting post from falling off. For disassembly of the guide fan blades 2, rotate the mounting post 42 to disengage the limiting post 421 from the limiting port 142, thereby removing the mounting post 42 from the mounting slot 14 and disassembling the guide fan blades 2. The additional protrusion 1421 is a curved protrusion. When the limiting post 421 is engaged with the limiting port 142, the protrusion 1421 is used to restrict the movement of the limiting post 421, so as to prevent the guide fan blade 2 from swinging easily when the central air conditioning guide fan is blown, and to fix it more tightly and stably.

[0037] As a specific implementation and not a limitation, in order to better drive the fan head to rotate when the air from the air conditioner outlet 62 blows the guide fan blade 2, a guide vane 21 is provided at the end of the guide fan blade 2 away from the fan head 1. The guide vane 21 is curved, and the distance from one end of the guide vane 21 to the fan head 1 is greater than the distance from the other end of the guide vane 21 to the fan head 1. Because the guide vane 21 is curved and the distance from one end of the guide vane 21 to the fan head 1 is greater than the distance from the other end of the guide vane 21 to the fan head 1, when the air from the air conditioner outlet 62 blows the guide fan blade 2, the guide vane 21 can effectively guide the airflow, causing the guide fan blade 2 to drive the fan head 1 to rotate counterclockwise, thereby creating airflow aligned with the air conditioner return air outlet 61 by the return fan blade assembly 11. Figure 5 As shown, the tilt angle of the guide rocker 21 is b, and the included angle b is 50°-60°, preferably 60°.

[0038] Furthermore, to better guide the airflow of the guide fan blade 2 and to make it more robust, multiple guide strips 22 are provided on the upper surface of the guide fan blade 2. These guide strips 22 are spaced apart from one end near the guide rocker plate 21 to the end near the fan head 1. Because the multiple guide strips 22 are located on the upper surface of the guide fan blade 2 and are raised, they effectively reinforce the guide fan blade 2. When air conditioning air blows onto the guide fan blade 2, the airflow moves along the gap between the two guide strips 22, providing excellent guidance and reducing noise.

[0039] As a specific implementation and not a limitation, in order to enable the fan head 1 to rotate around the circumference of the rotating shaft assembly 3, the rotating shaft assembly 3 includes a connecting rod 31, and the fan head 1 is provided with a sleeve 12. The connecting rod 31 is sleeved on the sleeve 12 to allow the fan head 1 to rotate circumferentially along the connecting rod 31. Since the connecting rod 31 is sleeved on the sleeve 12, when the connecting rod 31 is fixed, the fan head 1 can rotate circumferentially along the connecting rod 31.

[0040] Furthermore, to make the fan head 1 rotate more smoothly around the connecting rod 31, the shaft assembly 3 also includes a bearing 32 sleeved on the connecting rod 31, with the outer ring of the bearing 32 fixedly fitted to the inner wall of the sleeve 12. This type of bearing can be a deep groove ball bearing, a self-aligning ball bearing, a thrust needle roller bearing, an angular contact ball bearing, etc., preferably an NSK626ZZ bearing. Because the friction is low during rotation, the outer ring of the bearing 32 is fixed to the inner wall of the sleeve 12, while the inner ring of the bearing 32 is fixed to the connecting rod 31, resulting in even lower friction. Therefore, the fan head 1 rotates more smoothly around the connecting rod 31.

[0041] As a specific implementation and not a limitation, in order to make the fan head 1 more stable when rotating along the shaft assembly 3, two bearings 32 are provided, respectively located at both ends of the sleeve 12.

[0042] Furthermore, referring to Figure 11To facilitate the installation of the central air conditioning duct fan, a hanging assembly 5 is provided at the end of the rotating shaft assembly 3 away from the fan head 1. The hanging assembly 5 includes an upper mounting base 51 and a locking member 52 that can move axially along the rotating shaft assembly 3. The upper mounting base 51 and the locking member 52 cooperate to clamp and fix the central air conditioning duct fan to the central air conditioning unit. The locking member 52 is threadedly engaged with the connecting rod 31. When the central air conditioning duct fan needs to be installed, the air conditioning grille 63 needs to be disassembled, the connecting rod 31 is inserted into the air conditioning grille 63, the upper mounting base 51 is fixed to the end of the connecting rod 31, and then the locking member 52 is rotated to clamp and fix the air conditioning grille 63 between the locking member 52 and the upper mounting base 51. When the central air conditioning duct fan needs to be disassembled, only the upper mounting base 51 needs to be disassembled to install the central air conditioning duct fan.

[0043] Furthermore, the bottom of the fan head 1 is provided with a lower cover 15.

[0044] The specific working principle of this utility model is as follows:

[0045] When installing a central air conditioning duct fan, the air conditioning grille 63 needs to be disassembled, the connecting rod 31 inserted into the air conditioning grille 63, the upper mounting base 51 fixed to the end of the connecting rod 31, and then the locking member 52 rotated to clamp and fix the air conditioning grille 63 between the locking member 52 and the upper mounting base 51. Figure 1 As shown, after the air conditioner is turned on, the air from the air conditioner's outlet blows the guide fan blades 2, which in turn direct and disperse the air from the air conditioner's outlet 62, causing the fan head 1 to rotate counterclockwise. At the same time, the return fan blades and guide fan blades 2 rotate counterclockwise simultaneously, creating an airflow direction from bottom to top, aligned with the air conditioner's return air inlet 61. The return air path is as follows: Figure 7 As shown by arrow C, a large amount of the generated air enters the air conditioner's return air vent, so that the air conditioner does not need to consume a lot of energy for return air, saving energy. In addition, the guide fan blades evenly guide and disperse the air from the air conditioner's outlet, preventing direct blowing.

[0046] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A central air conditioning guide fan, comprising a fan head (1) and a rotating shaft assembly (3) connected to the fan head (1), characterized in that, The fan head (1) is provided with a return fan blade group (11) and multiple guide fan blades (2) along its periphery. When the air conditioner blows the guide fan blades (2), the guide fan blades (2) drive the fan head (1) to rotate circumferentially along the rotating shaft assembly (3) and make the return fan blade group (11) form an airflow that blows toward the air conditioner return air inlet (61).

2. The central air conditioning deflector fan according to claim 1, characterized in that, Multiple of the guide fan blades (2) are distributed along the outer periphery of the return fan blade group (11).

3. The central air conditioning guide fan according to claim 1, characterized in that, The guide fan blade (2) is provided with a guide rocker plate (21) at one end away from the fan head (1). The guide rocker plate (21) is curved. The distance from one end of the guide rocker plate (21) to the fan head (1) is greater than the distance from the other end of the guide rocker plate (21) to the fan head (1).

4. The central air conditioning guide fan according to claim 3, characterized in that, The upper surface of the guide fan blade (2) is provided with multiple guide strips (22), which are distributed at intervals from one end near the guide rocker plate (21) to one end near the fan head (1).

5. The central air conditioning guide fan according to claim 1, characterized in that, The device includes a fixing assembly (4) that is fixed to the fan head (1). The fixing assembly (4) includes a fixing rod (41). One end of the fixing rod (41) extends to the outside of the return fan blade assembly (11) and is fixed to the guide fan blade (2). The end of the fixing rod (41) away from the guide fan blade (2) is provided with a fixing post (42). One end of the fan head (1) is provided with a top cover (13). The top cover (13) cooperates with the fan head (1) to form a fixing groove (14). The fixing groove (14) cooperates with the fixing post (42) for fixation.

6. The central air conditioning guide fan according to claim 5, characterized in that, The side wall of the fixed column (42) is provided with a limiting column (421). The fixed groove (14) includes a limiting channel (141) at the bottom of the fixed groove (14) and a limiting opening (142) on the side wall of the fixed groove (14). The side wall of the limiting opening (142) is provided with a protrusion (1421). The limiting channel (141) communicates with the limiting opening (142). When the limiting column (421) moves along the limiting channel (141) to the limiting opening (142), the protrusion (1421) cooperates with the limiting column (421) to fix it.

7. The central air conditioning guide fan according to claim 1, characterized in that, The rotating shaft assembly (3) includes a connecting rod (31), and a sleeve (12) is provided on the fan head (1). The connecting rod (31) is sleeved on the sleeve (12) to allow the fan head (1) to rotate circumferentially along the connecting rod (31).

8. The central air conditioning guide fan according to claim 7, characterized in that, The rotating shaft assembly (3) also includes a bearing (32) sleeved on the connecting rod (31), the outer ring of the bearing (32) being fixed in conjunction with the inner wall of the sleeve (12).

9. The central air conditioning guide fan according to claim 8, characterized in that, Two bearings (32) are provided, respectively located at both ends of the sleeve (12).

10. The central air conditioning deflector fan according to claim 1, characterized in that, The shaft assembly (3) has a hanging assembly (5) at one end away from the fan head (1). The hanging assembly (5) includes an upper mounting base (51) and a locking member (52) that can move axially along the shaft assembly (3). The upper mounting base (51) and the locking member (52) cooperate to clamp and fix the central air conditioning guide fan to the central air conditioning unit.

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