Impeller, centrifugal fan and air conditioner

Abstract

The application provides a kind of impeller, centrifugal fan and air conditioner.The impeller includes hub, rotating member and multiple blades, the hub includes first annular frame and second annular frame, the first annular frame, the second annular frame and the rotating member are sequentially arranged parallel to each other, and the multiple blades are arranged between the first annular frame and the second annular frame and are arranged along the circumference of the first annular frame;One end of each blade is rotatably connected to the first annular frame, and the other end of each blade is provided with a connecting column, the connecting column is rotatably provided in the second annular frame and connected to the rotating member, and the rotating member can drive the multiple blades to rotate relative to the hub.The impeller provided by the application can drive the multiple blades to rotate synchronously by controlling the rotation of the rotating member, thereby realizing synchronous adjustment of the angle of the multiple blades, and further adjusting the air output of the impeller to meet different air supply requirements.

Description

Technical Field

[0001] This application belongs to the field of air conditioning technology, and in particular relates to an impeller, a centrifugal fan and an air conditioner. Background Technology

[0002] Centrifugal fans are a commonly used air supply device in the field of air conditioning technology. The working principle of a centrifugal fan is to use a high-speed rotating impeller to accelerate the gas, then decelerate it and change its flow direction, so that kinetic energy is converted into potential energy, and potential energy forms air pressure to form a high-speed airflow.

[0003] However, the blades of the impellers of existing centrifugal fans are usually fixed, which has the technical defect of not being able to adjust the blade angle, thus making it impossible to adjust the air volume of the impeller to meet different air supply requirements. Utility Model Content

[0004] This application provides an impeller, a centrifugal fan, and an air conditioner to solve the problem that the blade angle of existing impellers is not adjustable.

[0005] In a first aspect, embodiments of this application provide an impeller, the impeller including a hub, a rotating component, and a plurality of blades. The hub includes a first annular frame and a second annular frame, the first annular frame, the second annular frame, and the rotating component are arranged in parallel to each other in sequence. The plurality of blades are disposed between the first annular frame and the second annular frame and are arranged at circumferential intervals along the first annular frame. One end of each blade is rotatably connected to the first annular frame, and the other end of each blade is provided with a connecting post. The connecting post is rotatably inserted through the second annular frame and connected to the rotating component. The rotating component can drive the plurality of blades to rotate relative to the hub.

[0006] Optionally, the rotating component has a ring of teeth along its circumference, and each connecting post has a gear at the end away from the blade. The axis of the gear is parallel to the rotation axis of the connecting post, and the gear meshes with the teeth.

[0007] Optionally, the rotating component is annular, and the teeth are disposed on the inner or outer ring of the annular rotating component; or, the rotating component is disc-shaped, and the teeth are disposed on the outer circumferential surface of the disc-shaped rotating component.

[0008] Optionally, the impeller further includes multiple connecting rods, one end of each connecting rod being hinged to the rotating member, and the other end of each connecting rod being hinged to a corresponding connecting post. The hinge axes of the connecting rods, the rotating member, and the connecting posts are all parallel to the rotation axis of the connecting posts.

[0009] Optionally, the first annular frame is provided with a shaft hole, and one end of the blade is provided with a rotating shaft, which is rotatably inserted into the shaft hole.

[0010] Optionally, the impeller further includes a first driving member, which can drive the rotating member to rotate the plurality of blades relative to the hub.

[0011] Optionally, the impeller further includes a connecting rod, one end of which is connected to the rotating component, and the other end of which is connected to the output end of the first driving component. The first driving component can drive the connecting rod to rotate the rotating component relative to the hub; and / or, the first driving component is a first motor, and the motor shaft of the first motor is connected to the rotating component.

[0012] Optionally, the blade has an outer edge facing outward from the impeller, and the outer edge is covered with a flexible material.

[0013] Secondly, this application embodiment also provides a centrifugal fan, the centrifugal fan including a volute and the aforementioned impeller, the volute being provided with a first air inlet and a first air outlet, and the impeller being disposed inside the volute.

[0014] Thirdly, embodiments of this application also provide an air conditioner, the air conditioner including a casing and a fresh air module, the fresh air module including the centrifugal fan described above, the centrifugal fan being disposed on the casing.

[0015] Optionally, the air conditioner further includes a cross-flow fan and a second drive unit. The housing is provided with an air duct, and the housing is provided with a second air inlet and a second air outlet that are respectively connected to the air duct. The cross-flow fan is disposed in the air duct, and the second drive unit can drive the impellers of the cross-flow fan and the centrifugal fan to rotate synchronously.

[0016] Optionally, the impeller is connected to one end of the cross-flow fan and coaxially arranged with the cross-flow fan, the second drive member is located at the end of the cross-flow fan away from the impeller, and the output end of the second drive member is connected to the cross-flow fan; or, the impeller is connected to one end of the cross-flow fan and coaxially arranged with the cross-flow fan, the second drive member is located at the end of the impeller away from the cross-flow fan, and the output end of the second drive member is connected to the impeller.

[0017] Optionally, the second driving component is a second motor, and the motor shaft of the second motor is connected to the cross-flow fan or the impeller.

[0018] The impeller, centrifugal fan, and air conditioner provided in this application embodiment are achieved by rotatably connecting one end of each blade to a first annular frame and providing a connecting post at the other end of each blade. The connecting post is rotatably inserted through a second annular frame and connected to a rotating component. The rotating component can drive multiple blades to rotate relative to the hub. Thus, by controlling the rotation of the rotating component, multiple blades can be driven to rotate synchronously, thereby synchronously adjusting the angle of multiple blades and adjusting the air volume of the impeller to meet different air supply requirements. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of this application. Those skilled in the art can obtain other drawings based on these drawings without creative effort. In the following description, the same reference numerals denote the same parts.

[0020] Figure 1 This is a schematic diagram of a first structure of an impeller provided in an embodiment of this application.

[0021] Figure 2 This is a schematic diagram of a second structure of the impeller provided in an embodiment of this application.

[0022] Figure 3 This is a schematic diagram of the structure of a centrifugal fan provided in an embodiment of this application.

[0023] Figure 4 for Figure 3 The diagram shows the exploded structure of an air conditioner.

[0024] Figure 5 A schematic diagram of the structure of the centrifugal fan, the cross-flow fan, and the second drive component provided in the embodiments of this application.

[0025] Figure 6 for Figure 5 The diagram shows a cross-sectional view of the centrifugal fan, the cross-flow fan, and the second drive component.

[0026] Figure 7 for Figure 5 The diagram shows an exploded view of the centrifugal fan, the cross-flow fan, and the second drive component.

[0027] Figure 8 for Figure 5 The diagram shows a structural schematic of the centrifugal fan, cross-flow fan, and second drive unit from another perspective.

[0028] Figure 9 A schematic diagram of the impeller, cross-flow fan, and second drive component provided in the embodiments of this application.

[0029] Figure 10 for Figure 9 The diagram shows another perspective of the impeller, cross-flow fan, and second drive component.

[0030] Explanation of icon numbers: 100 Impeller; 110 Hub; 111 First annular frame; 112 Second annular frame; 120 Rotating component; 121 Tooth; 130 Blade; 140 Connecting column; 141 Gear; 150 First driving component; 160 Connecting rod; 200 Volute; 201 First air inlet; 202 First air outlet; 210 First housing; 220 Second housing; 300 Housing; 301 Second air inlet; 302 Fresh air outlet; 310 Base; 320 Middle frame; 330 Panel; 400 Cross-flow fan; 500 Second driving component; 600 Air guide plate; 700 Filter screen. Detailed Implementation

[0031] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0032] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0033] In this application, the term "exemplary" is used to mean "used as an example, illustration, or illustration." Any embodiment described as "exemplary" in this application is not necessarily to be construed as being more preferred or advantageous than other embodiments. The term "and / or" includes any and all combinations of one or more of the associated listed items.

[0034] This application provides an impeller 100, such as... Figure 1 As shown, the impeller 100 includes a hub 110, a rotating component 120, and multiple blades 130. The hub 110 includes a first annular frame 111 and a second annular frame 112. The first annular frame 111, the second annular frame 112, and the rotating component 120 are arranged parallel to each other in sequence. Multiple blades 130 are arranged between the first annular frame 111 and the second annular frame 112 and are spaced apart circumferentially along the first annular frame 111. One end of each blade 130 is rotatably connected to the first annular frame 111, and the other end of each blade 130 is provided with a connecting post 140. The connecting post 140 is rotatably inserted through the second annular frame 112 and connected to the rotating component 120. The rotating component 120 can drive the multiple blades 130 to rotate relative to the hub 110.

[0035] Specifically, the rotating component 120, the first annular frame 111, and the second annular frame 112 are all annular structures, and the rotation axis of the blade 130 is parallel to the axial direction of the first annular frame 111 and the second annular frame 112. "The first annular frame 111, the second annular frame 112, and the rotating component 120 are arranged in parallel to each other in sequence" means that the axial directions of the first annular frame 111, the second annular frame 112, and the rotating component 120 are parallel to each other, and the first annular frame 111, the second annular frame 112, and the rotating component 120 are arranged in sequence along the axial direction.

[0036] The impeller 100 provided in this application embodiment has one end of each blade 130 rotatably connected to the first annular frame 111, and the other end of each blade 130 is provided with a connecting post 140. The connecting post 140 is rotatably inserted through the second annular frame 112 and connected to the rotating member 120. The rotating member 120 can drive multiple blades 130 to rotate relative to the hub 110. Thus, the user can control the rotation of the rotating member 120 to drive multiple blades 130 to rotate synchronously, realize the synchronous adjustment of the angle of multiple blades 130, and thereby adjust the air volume of the impeller 100 to meet different air supply requirements and improve the adaptability of the impeller 100.

[0037] In some embodiments of this application, a ring of teeth 121 is provided on the rotating member 120 along the circumference of the rotating member 120. Each connecting post 140 has a gear 141 at the end away from the blade 130. The axis of the gear 141 is parallel to the rotation axis of the connecting post 140, and the gear 141 meshes with the teeth 121. Since the gear 141 meshes with the teeth 121, when the rotating member 120 rotates, it will drive each gear 141 meshing with the teeth 121 to rotate simultaneously through the teeth 121. When each gear 141 rotates, it will drive the connecting post 140 connected to it to rotate, thereby driving multiple blades 130 to rotate relative to the hub 110. In this way, the rotating member 120 can drive multiple blades 130 to rotate relative to the hub 110.

[0038] Optionally, the rotating member 120 can be annular, meaning the rotating member 120 has a circular structure, and the teeth 121 can be disposed on the inner or outer ring of the annular rotating member 120. Alternatively, the rotating member 120 can also be disc-shaped, meaning the rotating member 120 has a disc-shaped structure, and the teeth 121 are disposed on the outer circumferential surface of the disc-shaped rotating member 120, such as... Figure 2 As shown.

[0039] Alternatively, in other embodiments, the impeller further includes multiple connecting rods, one end of which is hinged to the rotating member 120, and the other end of which is hinged to a plurality of connecting posts 140 corresponding to each other. The hinge axis between the connecting rod and the rotating member 120 is parallel to the rotation axis of the connecting post 140, and the hinge axis between the connecting rod and the connecting post 140 is also parallel to the rotation axis of the connecting post 140. With this configuration, when the rotating member 120 rotates, it will drive each connecting post 140 hinged to the connecting rod to rotate simultaneously. When each connecting post 140 rotates, it will drive the blades 130 connected to it to rotate relative to the hub 110. This also achieves the effect of the rotating member 120 driving multiple blades 130 to rotate relative to the hub 110.

[0040] Optionally, the first annular frame 111 is provided with a shaft hole, and the end of the blade 130 away from the connecting post 140 is provided with a rotating shaft, which is rotatably inserted into the shaft hole. With this configuration, the end of the blade 130 away from the connecting post 140 can be rotatably connected to the first annular frame 111.

[0041] In some embodiments of this application, such as Figure 1 As shown, the impeller 100 also includes a first driving member 150, which drives the rotating member 120 to rotate multiple blades 130 relative to the hub 110. By setting the first driving member 150, the rotation of the rotating member 120 can be automatically controlled, thereby automatically adjusting the angle of the blades 130. Of course, in other embodiments, the user can also manually adjust the angle of the blades 130, and this application does not limit this.

[0042] Optionally, the rotating component 120 is annular, and the impeller 100 also includes a connecting rod 160. One end of the connecting rod 160 is connected to the rotating component 120, and the other end is connected to the output end of the first driving component 150. The first driving component 150 can drive the connecting rod 160 to rotate the rotating component 120 relative to the hub 110. By setting the connecting rod 160, it is convenient to drive the first driving component 150 and the annular rotating component 120 to rotate, so as to realize that the rotating component 120 is driven to rotate by the first driving component 150. Specifically, when the first driving component 150 drives the rotating component 120 to rotate, the rotating component 120 will drive multiple blades 130 to rotate relative to the hub 110, so as to synchronously adjust the angle of the multiple blades 130.

[0043] Optionally, the first driving component 150 is a first motor, and the motor shaft of the first motor is connected to the rotating component 120. Specifically, when the blade 130 also includes a connecting rod 160, one end of the connecting rod 160 is connected to the rotating component 120, and the other end of the connecting rod 160 is connected to the motor shaft of the first motor. When the motor shaft of the first motor rotates, it drives the connecting rod 160 to rotate. When the connecting rod 160 rotates, it drives the rotating component 120 to rotate. In turn, the rotating component 120 can drive multiple blades 130 to rotate relative to the hub 110, so as to synchronously adjust the angle of multiple blades 130.

[0044] In some embodiments of this application, the blade 130 has an outer edge facing outwards from the impeller 100, and the outer edge is covered with a flexible material. By covering the outer edge of the blade 130 with a flexible material, the flexible material can effectively buffer the vibration of the impeller 100 during rotation, reduce noise, and improve structural stability. Optionally, the flexible material can be a flexible polymer material.

[0045] This application also provides a centrifugal fan, such as... Figures 5-8 As shown, the centrifugal fan includes a volute 200 and an impeller 100. The specific structure of the impeller 100 is as described in the above embodiments. The volute 200 is provided with a first air inlet 201 and a first air outlet 202, and the impeller 100 is disposed inside the volute 200. Since this centrifugal fan adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0046] Specifically, when the impeller 100 rotates inside the volute 200, the driving airflow enters the interior of the impeller 100 from the first air inlet 201, then flows out from the gap between two adjacent blades 130 to the first air outlet 202, and finally flows out from the first air outlet 202 to the outside of the volute 200.

[0047] Optionally, the volute 200 includes a first housing 210 and a second housing 220, which are distributed along the axial direction of the impeller 100. The first housing 210 and the second housing 220 are detachably connected and together form a wind cavity, thereby improving the assembly efficiency of the centrifugal fan. The impeller 100 is disposed in the first housing 210, the first air inlet 201 is disposed on the second housing 220 and communicates with the wind cavity, and the first air outlet 202 is disposed on the first housing 210 and communicates with the wind cavity.

[0048] This application also provides an air conditioner, such as... Figures 3-4 As shown, the air conditioner includes a housing 300 and a fresh air module. The fresh air module includes the centrifugal fan mentioned above, which is mounted on the housing 300.

[0049] Specifically, the fresh air module is used to introduce outdoor fresh air into the room. The first air inlet 201 can be connected to the outside through a fresh air duct. By controlling the rotation of the impeller 100, outdoor fresh air can be introduced into the volute 200 through the first air inlet 201 and then flow into the room through the first air outlet 202.

[0050] Optionally, the housing 300 is provided with a fresh air outlet 302, which is connected to the first air outlet 202 so that outdoor fresh air flows into the room through the first air outlet 202.

[0051] In some embodiments of this application, such as Figures 4-10 As shown, the air conditioner also includes a cross-flow fan 400 and a second drive unit 500. An air duct is provided inside the casing 300, and the air duct is isolated from the internal space of the volute 200. The casing 300 has a second air inlet 301 and a second air outlet, both connected to the air duct. The cross-flow fan 400 is disposed within the air duct, and the second drive unit 500 can drive the cross-flow fan 400 and the centrifugal fan to rotate synchronously. This application saves one drive unit by using a single drive unit to simultaneously drive the cross-flow fan 400 and the centrifugal fan, thereby simplifying the overall structure of the air conditioner and reducing its production cost.

[0052] Optionally, the second air inlet 301 is located at the top of the housing 300, and the second air outlet is located at the front of the housing 300 and near the bottom of the housing 300, that is, the second air outlet is located at the lower front side of the housing 300; the cross-flow fan 400 extends along the length of the housing 300. When the cross-flow fan 400 rotates, it introduces indoor air into the housing 300 from the second air inlet 301 for heat exchange. Then, the air in the housing 300 after heat exchange flows through the air duct to the second air outlet, and finally flows out of the second air outlet into the room.

[0053] In some embodiments of this application, the impeller 100 of the centrifugal fan is connected to one end of the cross-flow fan 400 and is coaxially arranged with the cross-flow fan 400. The second drive member 500 is located at the end of the cross-flow fan 400 away from the impeller 100, and the output end of the second drive member 500 is connected to the cross-flow fan 400, thereby achieving convenient installation and improving assembly efficiency. Alternatively, the impeller 100 of the centrifugal fan is connected to one end of the cross-flow fan 400 and is coaxially arranged with the cross-flow fan 400. The second drive member 500 is located at the end of the impeller 100 away from the cross-flow fan 400, and the output end of the second drive member 500 is connected to the impeller 100. This also achieves convenient installation and improves assembly efficiency. Optionally, the second drive unit 500 is a second motor, and the motor shaft of the second motor is connected to the cross-flow fan 400 or the impeller 100.

[0054] In some embodiments of this application, such as Figures 3-4As shown, the housing 300 includes a base 310, a middle frame 320 and a panel 330. The base 310 is connected to the middle frame 320, and the panel 330 is located on the front side of the middle frame 320. An air duct is formed on the base 310, and the second air inlet 301 and the second air outlet are both located on the middle frame 320.

[0055] Optionally, the air conditioner also includes an air guide plate 600 and a filter 700. The air guide plate 600 is rotatably disposed at the second air outlet to open or close the second air outlet. The filter 700 is disposed at the second air inlet 301 and is used to filter and purify the indoor air flowing to the second air inlet 301 to prevent impurities and lint mixed in the indoor air from entering the casing 300.

[0056] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0057] The impeller, centrifugal fan, and air conditioner provided in the embodiments of this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. An impeller, characterized in that, The impeller (100) includes a hub (110), a rotating component (120), and a plurality of blades (130). The hub (110) includes a first annular frame (111) and a second annular frame (112). The first annular frame (111), the second annular frame (112), and the rotating component (120) are arranged parallel to each other in sequence. The plurality of blades (130) are disposed between the first annular frame (111) and the second annular frame (112) and are arranged at intervals along the circumference of the first annular frame (111). One end of each blade (130) is rotatably connected to the first annular frame (111), and the other end of each blade (130) is provided with a connecting post (140). The connecting post (140) is rotatably inserted through the second annular frame (112) and connected to the rotating member (120). The rotating member (120) can drive multiple blades (130) to rotate relative to the hub (110).

2. The impeller according to claim 1, characterized in that, The rotating component (120) has a ring of teeth (121) along its circumference. Each connecting post (140) has a gear (141) at one end away from the blade (130). The axis of the gear (141) is parallel to the rotation axis of the connecting post (140), and the gear (141) meshes with the teeth (121).

3. The impeller according to claim 2, characterized in that, The rotating member (120) is annular, and the teeth (121) are disposed on the inner or outer ring of the annular rotating member (120). Alternatively, the rotating member (120) is disc-shaped, and the teeth (121) are disposed on the outer peripheral surface of the disc-shaped rotating member (120).

4. The impeller according to claim 1, characterized in that, The impeller (100) also includes a plurality of connecting rods, one end of which is hinged to the rotating member (120), and the other end of which is hinged to a plurality of connecting columns (140) in a corresponding manner. The hinge axes of the connecting rods and the rotating member (120) and the connecting columns (140) are both parallel to the rotation axis of the connecting columns (140).

5. The impeller according to claim 1, characterized in that, The first annular frame (111) is provided with a shaft hole, and one end of the blade (130) is provided with a rotating shaft, which is rotatably inserted into the shaft hole; And / or, the blade (130) has an outer edge facing outward of the impeller (100), the outer edge being covered with a flexible material.

6. The impeller according to any one of claims 1 to 5, characterized in that, The impeller (100) further includes a first drive member (150), which can drive the rotating member (120) to drive the plurality of blades (130) to rotate relative to the hub (110).

7. The impeller according to claim 6, characterized in that, The rotating component (120) is annular. The impeller (100) also includes a connecting rod (160). One end of the connecting rod (160) is connected to the rotating component (120), and the other end of the connecting rod (160) is connected to the output end of the first driving component (150). The first driving component (150) can drive the connecting rod (160) to make the rotating component (120) rotate relative to the hub (110). And / or, the first drive member (150) is a first motor, and the motor shaft of the first motor is connected to the rotating member (120).

8. A centrifugal fan, characterized in that, The centrifugal fan includes a volute (200) and an impeller (100) as described in any one of claims 1 to 7. The volute (200) is provided with a first air inlet (201) and a first air outlet (202), and the impeller (100) is disposed inside the volute (200).

9. An air conditioner, characterized in that, The air conditioner includes a housing (300) and a fresh air module, the fresh air module including the centrifugal fan as described in claim 8, the centrifugal fan being disposed on the housing (300).

10. The air conditioner according to claim 9, characterized in that, The air conditioner also includes a cross-flow fan (400) and a second drive unit (500). The housing (300) is provided with an air duct. The housing (300) is provided with a second air inlet (301) and a second air outlet that are respectively connected to the air duct. The cross-flow fan (400) is disposed in the air duct. The second drive unit (500) can drive the impeller (100) of the cross-flow fan (400) and the centrifugal fan to rotate synchronously.

11. The air conditioner according to claim 10, characterized in that, The impeller (100) is connected to one end of the cross-flow fan (400) and is coaxially arranged with the cross-flow fan (400). The second drive member (500) is arranged at one end of the cross-flow fan (400) away from the impeller (100). The output end of the second drive member (500) is connected to the cross-flow fan (400). Alternatively, the impeller (100) is connected to one end of the cross-flow fan (400) and is coaxially arranged with the cross-flow fan (400), and the second drive member (500) is arranged at the end of the impeller (100) away from the cross-flow fan (400), and the output end of the second drive member (500) is connected to the impeller (100).

12. The air conditioner according to claim 11, characterized in that, The second drive unit (500) is a second motor, and the motor shaft of the second motor is connected to the cross-flow fan (400) or the impeller (100).

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