Cross-flow fan and air conditioner

Abstract

The utility model belongs to the technical field of household appliances, and particularly relates to a cross-flow fan and an air conditioner. The cross-flow fan comprises an impeller assembly. The heating assembly is used for heating air near the impeller assembly; the rotating assembly comprises a rotating piece and a fixing piece, the rotating piece is rotationally arranged on the fixing piece, the heating assembly is arranged on the fixing piece, the impeller assembly is connected with the rotating piece, and the rotating piece drives the impeller assembly to rotate. And the service life of the heating assembly in the cross-flow fan is prolonged.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of air conditioners, and particularly relates to a cross-flow fan and an air conditioner. BACKGROUND

[0002] The cross-flow fan is widely applied to the air duct system of an air conditioner due to its unique structure and performance. The cross-flow fan can generate flat and columnar airflow through the long cylindrical impeller formed by the circumferential arrangement of the long strip-shaped blades, and the airflow is slowly spread, which is suitable for the air supply requirement of the air conditioner.

[0003] In the related art, in order to improve the auxiliary heating capacity of the air conditioner, a heating device is installed on the cross-flow fan of the air conditioner. The heating device usually adopts an electric heating mode, generates heat through an electric heating element, and combines with the airflow of the cross-flow fan to achieve rapid heating.

[0004] However, the heating device installed in the cross-flow fan rotates with the cross-flow fan, and is easily damaged in the long-term use of the cross-flow fan. UTILITY MODEL CONTENT

[0005] The application provides a cross-flow fan and an air conditioner to solve the problem that the heating device is arranged in the cross-flow fan, the heating device rotates with the cross-flow fan, and is easily damaged.

[0006] In a first aspect, the application provides a cross-flow fan, comprising:

[0007] an impeller assembly;

[0008] a heating assembly configured to heat air around the impeller assembly;

[0009] a rotating assembly comprising a rotating member and a fixed member, the rotating member being rotationally arranged on the fixed member, the heating assembly being arranged on the fixed member, the impeller assembly being connected to the rotating member, and the rotating member driving the impeller assembly to rotate.

[0010] In a possible design, the rotating member comprises an annular portion and a gear portion, the impeller assembly is connected to the annular portion, the annular portion is sleeved on the fixed member, and the gear portion is arranged on the annular portion and configured to drive the impeller assembly to rotate.

[0011] In a possible design, the gear portion comprises a main body portion and a plurality of tooth portions, the main body portion is arranged at one end of the annular portion away from the impeller assembly, and the tooth portions are circumferentially arranged on the outer circle of the main body portion.

[0012] In a possible design, the outer diameter of the gear portion is smaller than the outer diameter of the annular portion.

[0013] In a possible design, the rotating assembly further comprises a bearing, the impeller assembly is rotationally connected to the to-be-mounted member through the bearing, and the bearing is arranged at one end of the impeller assembly away from the fixed member.

[0014] In a possible design, the impeller assembly comprises two mounting discs and a plurality of blowing blades arranged in the circumferential direction between the mounting discs, and any mounting disc is sleeved on the rotating member.

[0015] In a possible design, the heating assembly comprises a heating rod, the heating rod is arranged on the fixed member, and the heating rod extends towards the inside of the impeller assembly.

[0016] In a possible design, the heating assembly further comprises a plurality of heat dissipation blades, and the heat dissipation blades are arranged on the heating rod.

[0017] In a possible design, the heating rod has two oppositely arranged mounting surfaces, and the heat dissipation blades are arranged on the mounting surfaces, respectively.

[0018] In a second aspect, the application provides an air conditioner, comprising an air conditioner body and a cross-flow fan arranged in the air conditioner body.

[0019] The cross-flow fan and the air conditioner provided in the application have the following beneficial effects: the impeller assembly is arranged on the rotating member, the heating assembly is arranged on the fixed member, and the rotating member is rotationally arranged on the fixed member, so that the impeller assembly rotates relative to the heating assembly, the damage of the heating assembly caused by the rotation of the cross-flow fan is reduced, and the service life of the heating assembly is prolonged. BRIEF DESCRIPTION OF DRAWINGS

[0020] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and serve to explain the principles of the application together with the specification.

[0021] Figure 1 A structural schematic diagram of the cross-flow fan provided in the embodiments of the application is shown in the following figure.

[0022] Figure 2 A structural schematic diagram of the cross-flow fan provided in the embodiments of the application is shown in the following figure. Figure 1 A partial structural schematic diagram of the cross-flow fan provided in the embodiments of the application is shown in the following figure.

[0023] Figure 3 A structural schematic diagram of the cross-flow fan provided in the embodiments of the application is shown in the following figure. Figure 1 A sectional view of the cross-flow fan provided in the embodiments of the application is shown in the following figure.

[0024] Figure 4 A structural schematic diagram of the cross-flow fan provided in the embodiments of the application is shown in the following figure. Figure 3 An enlarged structural schematic diagram of part A in the cross-flow fan provided in the embodiments of the application is shown in the following figure.

[0025] Figure 5 An enlarged structural schematic diagram of part A in the cross-flow fan provided in the embodiments of the application is shown in the following figure. Figure 3Enlarged structural schematic view of middle B part.

[0026] Legend of reference signs:

[0027] 100, impeller assembly; 110, mounting disc; 120, blowing blade; 130, reinforcing ring;

[0028] 200, heating assembly; 210, heating rod; 211, mounting surface; 212, connecting head; 220, heat dissipation blade;

[0029] 300, rotating assembly; 310, rotating piece; 311, annular part; 312, gear part; 3121, main body part; 3122, tooth part; 320, fixing piece; 330, bearing; 331, inner ring; 332, outer ring; 340, cylindrical roller.

[0030] The specific embodiments of the present application have been shown and described in the above drawings, and will be described in more detail hereinafter. These drawings and the written description are not intended to restrict the scope of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical scheme and advantages of the present application more clear, the technical scheme of the present application will be described clearly and completely in the following by referring to the drawings in the present application. Obviously, the described embodiments are part of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0032] The terms "first", "second", "third", "fourth" and the like in the description, claims and drawings of the present application (if any) are used to distinguish similar objects, and do not necessarily indicate a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein.

[0033] In the embodiments of the present application, the words "exemplary" or "for example" are used to mean example, instance, or illustration. Any embodiment or design scheme described as "exemplary" or "for example" in the present application should not be interpreted as more preferred or advantageous than other embodiments or design schemes. Rather, the use of "exemplary" or "for example" is intended to present relevant concepts in a concrete manner.

[0034] Cross-flow fans are widely used in air conditioning duct systems due to their unique structure and performance. Through their elongated cylindrical impeller formed by long, narrow blades arranged circumferentially, cross-flow fans can generate a straight, columnar airflow. This airflow disperses slowly, making it suitable for the air delivery requirements of air conditioners.

[0035] In related technologies, to improve the auxiliary heating capacity of air conditioners, heating devices are installed on the cross-flow fans. These heating devices typically use electric heating, generating heat through electric heating elements, which combines with the airflow of the cross-flow fan to achieve rapid heating.

[0036] However, the heating device installed in the cross-flow fan will rotate with the cross-flow fan, which can easily cause damage to the heating device during long-term use of the cross-flow fan.

[0037] To address the aforementioned issues, this application provides a cross-flow fan and an air conditioner. The cross-flow fan mounts an impeller assembly on a rotating component and a heating component on a fixed component. The rotating component is rotatably mounted on the fixed component, causing the impeller assembly to rotate relative to the heating component. This reduces damage to the heating component during the rotation of the cross-flow fan and improves the service life of the heating component.

[0038] The technical solutions of this application and how they solve the aforementioned technical problems are described in detail below with specific embodiments. These specific embodiments may exist independently or in combination with each other. Identical or similar concepts or processes may not be repeated in some embodiments. The embodiments of this application will now be described with reference to the accompanying drawings.

[0039] This application provides a cross-flow fan, with reference to... Figure 1 , Figure 2 and Figure 3 The cross-flow fan includes an impeller assembly 100, a heating assembly 200, and a rotating assembly 300.

[0040] The rotating impeller assembly 100 forms an airflow.

[0041] The heating element 200 is used to heat the air near the impeller assembly 100.

[0042] The rotating assembly 300 includes a rotating member 310 and a fixed member 320. The rotating member 310 is rotatably mounted on the fixed member 320. The heating assembly 200 is mounted on the fixed member 320. The impeller assembly 100 is connected to the rotating member 310, and the rotating member 310 drives the impeller assembly 100 to rotate.

[0043] The impeller assembly 100 is mounted on the rotating member 310, and the heating component 200 is mounted on the fixed member 320. The rotating member 310 is rotatably mounted on the fixed member 320 so that the impeller assembly 100 rotates relative to the heating component 200. This reduces the need for a rotating structure in the heating component 200, thereby preventing damage to the heating component 200 due to rotational wear during rotation and improving the service life of the heating component 200.

[0044] The impeller assembly 100 includes two mounting disks 110 and a plurality of blowing blades 120 disposed between the mounting disks 110. The blowing blades 120 are circumferentially fixed on the two mounting disks 110, and any one of the mounting disks 110 is fixedly sleeved on the rotating member 310. This arrangement allows the mounting disks 110 and the blowing blades 120 to jointly form a cylinder, with a gap between adjacent blowing blades 120. The impeller assembly 100 rotates along the axis of the mounting disks 110. During the rotation of the impeller assembly 100, it drives the airflow near and inside the cylinder.

[0045] For example, refer to Figure 1 The impeller assembly 100 also includes multiple reinforcing rings 130, which are coaxially arranged with the mounting plates 110 and located between two mounting plates 110. The reinforcing rings 130 are connected to the blowing blades 120, providing support for the blowing blades 120 and reducing the possibility of deformation during rotation. This improves the strength of the impeller assembly 100.

[0046] For example, ten reinforcing rings 130 are evenly distributed between the two mounting plates 110 to reduce deformation of the blower blades 120. In other embodiments, different numbers of reinforcing rings 130 can be used depending on actual needs. Further details are omitted here.

[0047] For example, the blower blade 120 is an arc-shaped blade. The cross-section of the blower blade 120 along the direction perpendicular to the axis of the mounting plate 110 is arc-shaped. This allows the blower blade 120 to guide airflow more effectively, making the airflow smoother, reducing airflow resistance, and thus improving the operating efficiency of the fan. In addition, it also helps to reduce the generation of eddies and turbulence, thereby reducing operating noise and making the fan quieter during operation.

[0048] The rotating component 310 is fixedly connected to the mounting plate 110 at one end of the cross-flow fan. The rotating component 310 is rotatably sleeved on the fixed component 320, and the rotating component 310 and the mounting plate 110 are arranged coaxially.

[0049] The rotating component 310 is connected to the drive device so that the drive device can drive the rotating component 310 to rotate around the fixed component 320, thereby driving the impeller assembly 100 to rotate.

[0050] When the cross-flow fan is used as an internal component of the air conditioner, the fastener 320 is used for fixed connection with the air conditioner.

[0051] When the cross-flow fan is used as a component of other equipment or installed separately, the mounting bracket 320 is fixedly connected to the equipment or mounting base.

[0052] For example, the retainer 320 and the swivel 310 can be the inner and outer rings of a bearing.

[0053] In one possible design, refer to Figure 2 The rotating member 310 includes an annular portion 311 and a gear portion 312. The impeller assembly 100 is connected to the annular portion 311. The annular portion 311 is rotatably sleeved on the fixed member 320. The gear portion 312 is disposed on the annular portion 311 and is used to drive the impeller assembly 100 to rotate.

[0054] The annular portion 311 is fixedly connected to the mounting plate 110 at one end of the impeller assembly 100. The gear portion 312 is disposed on the annular portion 311 and has teeth for meshing with an external drive structure to drive the rotating component 310 to rotate.

[0055] Compared to related technologies that directly connect the motor's output shaft to the mounting plate 110, where the motor's output shaft needs to be on the rotation axis of the impeller assembly 100 to drive the impeller assembly 100 to rotate, this application connects to the mounting plate 110 via an annular portion 311. The annular portion 311 is rotatably sleeved on the fixing member 320, changing the motor's mounting position and reducing the length of the cross-flow fan.

[0056] In addition, the diameter of the fixing member 320 can be increased to increase the connection area between the fixing member 320 and the annular portion 311, and between the annular portion 311 and the mounting plate 110, so as to improve the stability of the impeller assembly 100, reduce the shaking during the rotation of the impeller assembly 100, and reduce the output torque of the motor.

[0057] For example, the rotating member 310 also includes a driving member that meshes with the gear part 312. The driving member drives the gear part 312 to rotate, and the gear part 312 drives the impeller assembly 100 to rotate on the fixed member 320 through the annular part 311.

[0058] For example, the driving component may be a motor gear structure that meshes with the gear of the gear section 312.

[0059] For example, the annular portion 311 and the gear portion 312 are integrally formed.

[0060] For example, the fixing member 320 is a circular fixing block, and the middle of the fixing block has an installation groove for the heating component 200 to be installed on the fixing block.

[0061] For example, a plurality of cylindrical rollers 340 are provided between the fixed block and the annular portion 311, so that the fixed member 320, the cylindrical rollers 340 and the rotating member 310 form a cylindrical roller 340 bearing structure. This facilitates the rotation of the impeller assembly 100 and reduces the friction between the fixed member 320 and the rotating member 310.

[0062] Furthermore, the fixed member 320 and the rotating member 310 have arc-shaped raceways on adjacent sides. This structure results in a larger contact area between the rollers and the raceways, enabling them to withstand larger radial loads. This improves their ability to withstand heavy loads and impact loads, thus accommodating the long-term rotation of the impeller assembly 100.

[0063] In one possible design, the gear portion 312 includes a main body portion 3121 and a plurality of teeth portions 3122. The main body portion 3121 is disposed at one end of the annular portion 311 away from the impeller assembly 100, and the teeth portions 3122 are circumferentially disposed on the outer ring of the main body portion 3121.

[0064] The gear 3122 of the gear part 312 is provided on the outer side wall of the main body part 3121 so that the drive member is provided on the outer side of the gear part 312. The rotation axis of the drive member is misaligned with the rotation axis of the impeller assembly 100, which is conducive to changing the position of the drive member, thereby changing the structural layout of the cross-flow fan to adapt to the structural layout installation of the air conditioner in a small space.

[0065] In one possible design, refer to Figure 3 and Figure 4 The outer diameter of the gear portion 312 is smaller than the outer diameter of the ring portion 311, so that a step is formed between the gear portion 312 and the ring portion 311.

[0066] The outer diameter of the gear portion 312 is smaller than the outer diameter of the ring portion 311, so that a step is formed between the gear portion 312 and the ring portion 311. When the gear of the driving member meshes with the gear portion 312, the step between the gear portion 312 and the ring portion 311 restricts the position of the gear, which plays a role in limiting the gear in the driving member and reduces the possibility of the gear moving toward the impeller assembly 100.

[0067] In one possible design, refer to Figure 3 and Figure 5 The rotating assembly 300 also includes a bearing 330, through which the impeller assembly 100 is rotatably connected to the part to be installed. The bearing 330 is located at the end of the impeller assembly 100 away from the fixed part 320.

[0068] The rotating component 310 is connected to the mounting plate 110 at one end of the impeller assembly 100, and the bearing 330 is connected to the mounting plate 110 at the other end of the impeller assembly 100 to provide support for both ends of the impeller assembly 100. The component to be installed can be a mounting structure for a cross-flow fan, an air conditioner, etc.

[0069] For example, when a cross-flow fan is installed inside an air conditioner, the bearing 330 is connected to the air conditioner to support the impeller assembly 100.

[0070] In one possible design, refer to Figure 4 and Figure 5 The heating assembly 200 includes a heating rod 210, which is disposed on the fixing member 320 and extends toward the interior of the impeller assembly 100.

[0071] The heating rod 210 is fixed to the fixing member 320 and extends into the interior of the impeller assembly 100, directly heating the air inside the impeller assembly 100. Compared to installing the heating component 200 outside the impeller assembly 100, in this application, the heating component 200 is located inside the impeller assembly 100, allowing it to directly act on the air inside the impeller, reducing energy loss during heat transfer and significantly improving heating efficiency. Secondly, because the heating process is closer to the core area of ​​airflow, it ensures that the air is rapidly and evenly heated after entering the impeller assembly 100, thereby improving the uniformity and quality of the hot air. In addition, this design optimizes the heat transfer path, avoiding heat loss and temperature unevenness caused by external heating, further improving the heating effect and the stability of hot air output.

[0072] For example, the end of the heating rod 210 is provided with a connector 212, which is used to connect to an external power source to power the heating rod 210. The connector 212 is fixed to the end of the heating rod 210.

[0073] In one possible design, the bearing 330 includes an inner ring 331 and an outer ring 332, with the outer ring 332 rotatably mounted on the inner ring 331, the impeller assembly 100 mounted on the outer ring 332, and the heating rod 210 connected to the inner ring 331.

[0074] For example, when the cross-flow fan is installed inside the air conditioner, the inner ring 331 is connected to the air conditioner, thus forming a support for the impeller assembly 100 together with the fixing member 320. One end of the heating rod 210 is connected to the inner ring 331, and the other end is connected to the fixing member 320, so that the heating rod 210 penetrates the impeller assembly 100 to heat the air inside the impeller assembly 100, making the heating more uniform. In addition, the heating rod 210 also serves to support the mounting plates 110 at both ends of the impeller assembly 100, further improving the strength of the impeller assembly 100 and reducing the deformation of the impeller assembly 100.

[0075] For example, the connector 212 has an edge that abuts against the inner ring 331, and the edge is bolted to the inner ring 331.

[0076] The heating rod 210 is heated by electric heating, and the heating rod 210 has an electric heating resistance wire inside.

[0077] In one possible design, the heating assembly 200 also includes several heat dissipation blades 220, which are disposed on the heating rod 210.

[0078] The heat dissipation blades 220 have good thermal conductivity; for example, the heat dissipation blades 220 can be metal blades. The heat dissipation blades 220 increase the contact area between the heating assembly 200 and the air inside the impeller assembly 100, thereby improving the heating efficiency of the heating assembly 200 in heating the air.

[0079] For example, the heat dissipation blade 220 is an arc-shaped blade. This further increases the contact area with the air and improves the heating effect on the air.

[0080] In one possible design, the heating rod 210 has two oppositely arranged mounting surfaces 211, and heat dissipation blades 220 are respectively arranged on the mounting surfaces 211.

[0081] The heating rod 210 has a rectangular cross-section along the direction perpendicular to the axis of the impeller assembly 100, and the heat dissipation blades 220 are installed on opposite sides of the rectangular cross-section. This is to increase the contact area between the heat dissipation blades 220 and the air, and also to facilitate the manufacturing of the heat dissipation blades 220.

[0082] For example, the heating rod 210 can also be circular, with heat dissipation blades 220 circumferentially arranged around the heating rod 210.

[0083] This application also provides an air conditioner, including an air conditioner body and a cross-flow fan disposed within the air conditioner body.

[0084] The cross-flow fan in this embodiment has the same structure as the cross-flow fan provided in any of the above embodiments and can bring the same or similar technical effects. It will not be described in detail here. For details, please refer to the description of the above embodiments.

[0085] The air conditioner provided in this application, by setting the impeller assembly 100 on the rotating member 310 and setting the heating member 200 on the fixed member 320, and rotatably setting the rotating member 310 on the fixed member 320, so that the impeller assembly 100 rotates relative to the heating member 200, reduces the damage to the heating member 200 caused by the cross-flow fan during rotation and improves the service life of the heating member 200.

[0086] The technical solutions of this application have been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it is readily understood by those skilled in the art that the scope of protection of this application is obviously not limited to these specific embodiments. The above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A cross-flow fan characterized by, The application relates to a cross-flow fan, which comprises the following components: a vane assembly (100); a heating assembly (200) for heating air near the vane assembly (100); a rotating assembly (300) comprising a rotating part (310) and a fixed part (320), the rotating part (310) being rotatably arranged on the fixed part (320), the heating assembly (200) being arranged on the fixed part (320), and the vane assembly (100) being connected with the rotating part (310), and the rotating part (310) driving the vane assembly (100) to rotate.

2. The crossflow fan according to claim 1, characterized by, The rotating part (310) comprises an annular part (311) and a gear part (312), the vane assembly (100) being connected with the annular part (311), the annular part (311) being sleeved on the fixed part (320), and the gear part (312) being arranged on the annular part (311) and used for driving the vane assembly (100) to rotate.

3. The crossflow fan according to claim 2, characterized by, The gear part (312) comprises a main body part (3121) and a plurality of tooth parts (3122), the main body part (3121) being arranged at one end of the annular part (311) away from the vane assembly (100), and the tooth parts (3122) being circumferentially arranged on the outer ring of the main body part (3121).

4. The crossflow fan of claim 2, wherein, The outer diameter of the gear part (312) is smaller than the outer diameter of the annular part (311).

5. The crossflow fan according to any one of claims 1 to 4, characterized in that, The rotating assembly (300) further comprises a bearing (330), the vane assembly (100) being rotatably connected with a to-be-mounted part through the bearing (330), and the bearing (330) being arranged at one end of the vane assembly (100) away from the fixed part (320).

6. The crossflow fan according to any one of claims 1 to 4, characterized in that, The vane assembly (100) comprises two mounting discs (110) and a plurality of blowing blades (120) circumferentially arranged between the mounting discs (110), and any mounting disc (110) is sleeved on the rotating part (310).

7. The crossflow fan according to claim 6, characterized by The heating assembly (200) comprises a heating rod (210), the heating rod (210) being arranged on the fixed part (320) and extending towards the inside of the vane assembly (100).

8. The crossflow fan of claim 7, wherein, The heating assembly (200) further comprises a plurality of heat dissipation blades (220), the heat dissipation blades (220) being arranged on the heating rod (210).

9. The crossflow fan of claim 8, wherein, The heating rod (210) has two oppositely arranged mounting surfaces (211), and the heat dissipation blades (220) are arranged on the mounting surfaces (211) respectively.

10. An air conditioner characterized by comprising: The application further relates to an air conditioner body and a cross-flow fan as claimed in any one of claims 1-9 arranged in the air conditioner body.

Images