Fan assembly and air conditioner indoor unit

Abstract

The utility model relates to a draught fan assembly and an air conditioner indoor unit, the draught fan assembly comprises a draught fan end cover, a connecting piece and a magnetic ring, the connecting piece is connected between the draught fan end cover and the magnetic ring in the axial direction of a draught fan, the draught fan end cover comprises an end face part facing the connecting piece in the axial direction, and the end face part faces the magnetic ring. The contact area of the connecting piece and the end face part is at least larger than 1419 mm < 2 >. The contact area of the connecting piece and the end face part of the fan end cover is set to be at least larger than 1419mm < 2 > so as to ensure that the connecting piece and the end face part have enough contact area for fixed connection, and the contact area as small as possible is adopted for welding so as to save the welding process and the welding material cost.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of air conditioners, and in particular to a fan assembly and an air conditioner indoor unit. BACKGROUND

[0002] The fan end cover of the cross-flow magnetic fan blade assembly is connected with the magnet structure in cooperation, and the magnet structure is electromagnetically connected with the motor, so that the magnet structure drives the fan end cover to rotate after the motor is powered on, thereby driving the fan. In the related art, the magnetic ring is connected with the fan end cover through the connecting piece, and the magnetic ring and the connecting piece are integrally injection molded. CONTENT OF THE UTILITY MODEL

[0003] To overcome the problems in the related art, the present disclosure provides a fan assembly and an air conditioner indoor unit.

[0004] According to a first aspect of the embodiments of the present disclosure, a fan assembly is provided, comprising a fan end cover, a connecting piece and a magnetic ring, the connecting piece being connected between the fan end cover and the magnetic ring along an axial direction of the fan, wherein the fan end cover comprises an end face portion facing the connecting piece along the axial direction, and a contact area between the connecting piece and the end face portion is at least greater than 1419mm 2 .

[0005] Optionally, the contact area between the connecting piece and the end face portion is 1419mm 2 8960mm 2 .

[0006] Optionally, the fan end cover comprises a protruding portion extending from the end face portion towards the connecting piece along the axial direction, and the protruding portion is axially inserted into the connecting piece.

[0007] Optionally, at least part of the contact surface between the connecting piece and the end face portion is configured to extend radially outward from the radially outer side of the protruding portion.

[0008] Optionally, the protruding portion comprises a plurality of positioning columns arranged circumferentially along the fan end cover, and the contact surface between the connecting piece and the end face portion is configured to be arranged on both sides of the positioning columns in the radial direction.

[0009] Optionally, the connecting piece is in contact with the fan end cover at a radially outer edge of the end face portion.

[0010] Optionally, the contact surface between the connecting piece and the end face portion is configured to be arranged radially spaced apart from the radially outer edge of the end face portion.

[0011] Optionally, the connecting piece comprises a shoulder portion arranged opposite to the end face portion in the axial direction.

[0012] Optionally, the contact surface of the connecting piece and the end surface part is configured to be spaced apart in the radial direction.

[0013] Optionally, the connecting piece comprises a groove part between the two axial ends of the connecting piece.

[0014] According to a second aspect of the embodiments of the present disclosure, an indoor unit of an air conditioner is provided, comprising the fan assembly provided by the present disclosure

[0015] The technical solutions provided by the embodiments of the present disclosure can have the following beneficial effects: the contact area of the connecting piece and the end surface part of the fan end cover is set to be at least greater than 1419mm 2 to ensure that the connecting piece and the end surface part have sufficient contact area for fixed connection, and the smallest possible contact area is used for welding to save the welding process and welding material cost.

[0016] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present disclosure. BRIEF DESCRIPTION OF DRAWINGS

[0017] The accompanying drawings, which are incorporated into and form part of the specification, illustrate embodiments consistent with the present disclosure and, together with the specification, serve to explain the principles of the present disclosure.

[0018] Figure 1 is a partial structural exploded view of a fan assembly according to an exemplary embodiment;

[0019] Figure 2 is a partial structural cross-sectional view of a fan assembly according to an exemplary embodiment;

[0020] Figure 3 is a partial structural cross-sectional view of a fan assembly according to an exemplary embodiment;

[0021] Figure 4 is a partial structural cross-sectional view of a fan assembly according to an exemplary embodiment;

[0022] Figure 5 is a partial structural cross-sectional view of a fan assembly according to an exemplary embodiment;

[0023] Figure 6 is a partial structural cross-sectional view of a fan assembly according to an exemplary embodiment;

[0024] Figure 7 is a structural schematic view of a magnetic ring according to an exemplary embodiment;

[0025] Figure 8is a partial structural sectional view of a fan assembly according to an exemplary embodiment;

[0026] Figure 9 is a cross-sectional schematic view of a magnetic ring according to an exemplary embodiment;

[0027] Figure 10 is a cross-sectional schematic view of a magnetic ring according to an exemplary embodiment.

[0028] BRIEF DESCRIPTION OF DRAWINGS

[0029] 10 - fan end cover, 11 - end face portion, 12 - protruding portion, 20 - connecting piece, 22 - shoulder portion, 23 - grooved portion, 30 - magnetic ring, 31 - insertion portion, 311 - axial segment, 312 - radial segment. DETAILED DESCRIPTION

[0030] The exemplary embodiments will be described in detail herein with reference to the attached drawings. In the following description, like reference numerals refer to like elements unless indicated otherwise. The following exemplary embodiments described herein represent the best attempts at providing devices consistent with aspects of the present disclosure, but are not necessarily the only way to implement such devices. That is, the following exemplary embodiments are merely examples, not limitations, of the devices consistent with aspects of the present disclosure as detailed in the appended claims.

[0031] The fan end cover of the cross-flow magnetic fan blade assembly is connected with the magnet structure, and the magnet structure is electromagnetically connected with the motor, so that the magnet structure drives the fan end cover to rotate after the motor is powered on, thereby driving the fan. In the related art, the magnetic ring is connected with the fan end cover through the connecting piece, and the connecting piece is welded with the fan end cover. The welding process and welding material of the connecting piece and the fan end cover consume more cost. Therefore, the present disclosure provides a fan assembly, which is described with reference to Figures 1 to 6 The fan assembly includes a fan end cover 10, a connecting piece 20, and a magnetic ring 30. The connecting piece 20 is connected between the fan end cover 10 and the magnetic ring 30 along the axial direction of the fan, that is, in the axial direction shown in Figure 1 The connecting piece 20 is connected to the fan end cover 10, and the magnetic ring 30 is connected to the connecting piece 20, so that the magnetic ring 30 rotates synchronously with the fan. The fan end cover 10 includes an end face portion 11 facing the connecting piece 20 in the axial direction, and the connecting piece 20 is in contact with the end face portion 11 to be welded with the fan end cover 10. The welding method can be ultrasonic welding. Here, the contact area of the connecting piece 20 and the end face portion 11 is at least greater than 1419mm 2 .

[0032] By the above technical solution, the contact area of the connecting piece 20 and the end face portion 11 of the fan end cover 10 is set to be at least greater than 1419mm 2to ensure that the contact area of the connecting piece 20 and the end face part 11 is sufficient for fixed connection, and to use the smallest contact area for welding to save the welding process and welding material cost.

[0033] In an embodiment, the contact area of the connecting piece 20 and the end face part 11 is 1419mm 2 8960mm 2 In short, the contact area of the connecting piece 20 and the end face part 11 is greater than 1419mm 2 but less than 8960mm 2 to achieve the purpose of saving the welding cost as much as possible.

[0034] Referring to Figures 2 to 6 , the fan end cover 10 can include a protruding part 12 extending from the end face part 11 in the axial direction towards the connecting piece 20, and the protruding part 12 can be axially inserted into the connecting piece 20 so that the fan end cover 10 and the connecting piece 20 can be radially limited.

[0035] In an embodiment, referring to Figures 2 to 5 , at least part of the contact surface of the connecting piece 20 and the end face part 11 can be configured to extend radially outward from the radially outer side of the protruding part 12, and contact on the radially outer side of the protruding part 12, which facilitates to ensure the positioning stability effect of the protruding part 12, and on the radially outer side, it can facilitate the welding operation and reduce the welding difficulty.

[0036] Referring to Figure 5 and Figure 6 , the protruding part 12 can include a plurality of positioning columns arranged circumferentially along the fan end cover 10, and the contact surface of the connecting piece 20 and the end face part 11 is configured to be arranged on both the radially inner and outer sides of the positioning columns. The circumferential arrangement of the plurality of positioning columns can enhance the positioning effect. In the embodiment of the present disclosure, the contact surface of the connecting piece 20 and the end face part 11 can also be configured to be arranged around the positioning columns.

[0037] Referring to Figure 2 and Figure 3 , the connecting piece 20 can be in contact with the fan end cover 10 at the radially outer edge of the end face part 11. In the figure, the connecting piece 20 and the end face part 11 are slightly offset in the axial direction, which is intended to facilitate welding to ensure the welding effect, but it should be understood that the embodiment shown in the figure can be understood as that the connecting piece 20 is in contact with the fan end cover 10 at the radially outer edge of the end face part 11, and it can also be understood that the connecting piece 20 can also be arranged in axial alignment with the end face part 11. When the connecting piece 20 is in contact at the radially outer edge of the end face part 11, the airflow will flow along the outer edge of the connecting piece 20 when the fan rotates, avoiding the generation of vortex to affect the stability or generate noise.

[0038] In some embodiments, as Figures 4 to 6The contact surface of the connecting piece 20 and the end face part 11 is configured to be radially spaced from the radial outer edge of the end face part 11, that is, the connecting piece 20 is not arranged at the radial outer edge of the end face part 11, which can make the operation space at the outer edge larger and improve the operation convenience.

[0039] The connecting piece 20 can include a shoulder part 22 arranged axially opposite to the end face part 11. By arranging the contact surface of the connecting piece 20 and the end face part 11 radially spaced from the radial outer edge of the end face part 11, the shoulder part 22 facing the end face part 11 can be formed, and marks can be engraved on the shoulder part 22, for example, angle marks are engraved on the circumference of the shoulder part 22 to provide identification for subsequent balance testing and facilitate observation by the user. The shoulder part 22 can be configured in a rounded structure to provide a better observation angle.

[0040] As shown in Figure 2 , Figure 5 and Figure 6 , the contact surface of the connecting piece 20 and the end face part 11 can be configured to be radially spaced, that is, the contact surface is divided into several sections to facilitate connection at different positions and ensure the connection effect, while minimizing the contact area and saving costs.

[0041] Referring to Figure 3 , the connecting piece 20 can include a grooved part 23 between the two axial ends of the connecting piece 20. The grooved part 23 can reduce the wall thickness of the connecting piece 20 in the corresponding position in the axial direction, which can match the axial thickness of the connecting piece 20 occupied by the magnetic ring 30, and avoid the large shrinkage rate caused by the uneven wall thickness of the connecting piece 20, which can cause the magnetic ring 30 to be unstable. In the embodiments of Figure 2 , the wall thickness can be reduced by the interval between the two contact surfaces, and in the embodiments of Figure 4 , Figure 5 and Figure 6 , the wall thickness can be reduced by the interval between the contact surface and the radial outer edge of the end face part 11.

[0042] In the related art, the magnetic ring is connected to the fan end cover through the connecting piece, and the magnetic ring and the connecting piece are integrally injection molded. The area where the magnetic ring and the connecting piece are connected is prone to become a weak magnetic area, and the larger the contact area, the more weak magnetic areas, which affects the waveform of the magnetic ring and thus affects the performance of the motor.

[0043] Therefore, the magnetic ring 30 of the fan assembly provided in the embodiments of the present disclosure includes a plug-in part 31 plugged into the connecting piece 20, and the magnetic ring 30 and the connecting piece 20 can be integrally injection molded. Here, the contact area of the plug-in part 31 and the connecting piece 20 is not greater than 4812mm 2 , that is, the contact area of the part of the magnetic ring 30 inserted into the connecting piece 20 and the connecting piece 20 is not greater than 4812mm2 .

[0044] By the technical solution, the contact area of the plug-in part of the magnetic ring 30 and the connecting piece 20 is set to be not more than 4812mm 2 , so that the contact area of the magnetic ring 30 and the connecting piece 20 is as small as possible in the case that the magnetic ring 30 and the connecting piece 20 have sufficient connection area, so as to reduce the weak magnetic area of the magnetic ring 30 as much as possible, and reduce the influence of the weak magnetic area on the performance of the motor.

[0045] In the embodiment of the present disclosure, the contact area of the plug-in part 31 and the connecting piece 20 is not less than 2143mm 2 , so that the connection of the plug-in part 31 and the connecting piece 20 is more stable.

[0046] Referring to Figure 5 , Figures 7 to 10 , the plug-in part 31 can include an axial section 311, which is used for axial cooperation with the connecting piece 20, that is to say, the axial section 311 is used for axial insertion into the connecting piece 20, and the axial section 311 can limit the radial relative displacement of the connecting piece 20 and the magnetic ring 30. In the embodiment of the present disclosure, the contact area of the axial section 311 and the connecting piece 20 can be 1913mm 2 ~2812mm 2 , so as to have sufficient axial cooperation area, improve the connection stability, and avoid that the magnetic ring 30 generates a larger weak magnetic area.

[0047] As shown in Figure 7 , the axial section 311 can be configured as a ring structure, so that the contact area in the circumferential direction is uniform, and deformation caused by local large stress is avoided, which affects the fixing effect of the magnetic ring 30.

[0048] In the embodiment of the present disclosure, referring to Figure 5 , Figures 7 to 10 , the plug-in part 31 can include a radial section 312, which is radially protruded from the axial section 311 and radially cooperates with the connecting piece 20, that is to say, the radial section 312 is radially inserted into the connecting piece 20 from the axial section 311, and the radial section 312 can at least limit the axial relative displacement of the connecting piece 20 and the magnetic ring 30. In the embodiment of the present disclosure, the contact area of the radial section 312 and the connecting piece 20 can be 230mm 2 ~2000mm 2 , so as to have sufficient radial cooperation area, improve the connection stability, and avoid that the magnetic ring 30 generates a larger weak magnetic area.

[0049] The radial section 312 can be configured to protrude radially inward from the axial section 311, or, as Figure 5 and Figure 10As shown in Figs. 1 and 2, the radial segment 312 can be configured to protrude radially outward from the axial segment 311. In some embodiments, the radial segment 312 can be configured to protrude radially inward from the axial segment 311, and to protrude radially outward from the axial segment 312, so as to ensure better limiting effect.

[0050] In an embodiment, the radial segment 312 can be configured as a ring structure, so that the contact area in the circumferential direction is uniform, and deformation caused by local stress is avoided, which affects the fixing effect of the magnetic ring 30. When the radial segment 312 is a ring structure, the radial segment 312 can serve as an axial limiting part for the connecting piece 20 and the magnetic ring 30.

[0051] In an embodiment, as shown in Figs. 1 and 2, the radial segment 312 can be configured as a plurality of protrusions arranged at intervals in the circumferential direction. Arranging the radial segment 312 as a structure arranged at intervals in the circumferential direction can limit the connecting piece 20 and the magnetic ring 30 in the axial direction, and can also limit the connecting piece 20 and the magnetic ring 30 in the circumferential direction, so that the connection between the magnetic ring 30 and the connecting piece 20 is more reliable and stable. Figure 1 and Figure 7 As shown in Figs. 1 and 2, the radial segment 312 can be configured as a plurality of protrusions arranged at intervals in the circumferential direction. Arranging the radial segment 312 as a structure arranged at intervals in the circumferential direction can limit the connecting piece 20 and the magnetic ring 30 in the axial direction, and can also limit the connecting piece 20 and the magnetic ring 30 in the circumferential direction, so that the connection between the magnetic ring 30 and the connecting piece 20 is more reliable and stable.

[0052] Referring to Figs. 1 and 2, the cross section of the insertion part 31 can be configured as a T-shaped structure, i.e., the radial segment 312 is configured to protrude radially inward and radially outward from the axial segment 311. Figure 8 and Figure 9 Referring to Figs. 1 and 2, the cross section of the insertion part 31 can be configured as a T-shaped structure, i.e., the radial segment 312 is configured to protrude radially inward and radially outward from the axial segment 311. Figure 5 and Figure 10 Referring to Figs. 1 and 2, the cross section of the insertion part 31 can be configured as a T-shaped structure, i.e., the radial segment 312 is configured to protrude radially inward and radially outward from the axial segment 311.

[0053] According to a second aspect of the embodiments of the present disclosure, an air conditioner indoor unit is provided, which can include the above-mentioned fan assembly and has all the beneficial effects of the above-mentioned fan assembly, which will not be described herein again.

[0054] In the detailed description above, reference is made to the accompanying drawings, which form a part hereof, and in which are shown by way of illustration specific aspects in which the disclosure can be practiced. In this regard, directional terminology, such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and other commonly used terms, are used herein for the purpose of illustration only and are not intended to be limiting. Because the described devices can be positioned in a number of different orientations, the directional terminology can be used for illustration purposes only and is not limiting. It is to be understood that other aspects can be utilized and structural or logical changes can be made without departing from the scope of the present disclosure. The following detailed description, therefore, is not to be taken in a limiting sense.

[0055] It is to be understood that the features of the various aspects of the present disclosure described herein can be combined with each other, unless specifically noted otherwise. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items; similarly, "at least one of' includes any and all combinations of one or more of the associated listed items.

[0056] It should be understood that, unless otherwise specifically stated and limited, the terms "joined," "attached," "mounted," "connected," "linked," "fixed," and the like, as used herein, are to be construed broadly, e.g., as either fixed connections, or detachable connections, or integral; either mechanical, or electrical, or communicative with each other; either direct connections, or indirect connections through intermediaries; or internal communication or interaction between two elements, unless otherwise specifically limited. The specific meaning of the above terms in this context can be understood by those of ordinary skill in the art according to the specific circumstances.

[0057] Further, the word "over" as used in describing a component, element, or material layer "over" another component, element, or material layer in the surface "over" which it is formed or positioned can be used herein to mean that the component, element, or material layer is positioned "indirectly" on the surface, such that one or more additional components, elements, or layers are arranged between the surface and the component, element, or material layer. However, the word "over" as used in describing a component, element, or material layer "over" another component, element, or material layer in the surface "over" which it is formed or positioned can alternatively have the specific meaning that the component, element, or material layer is positioned "directly" on the surface, e.g., in direct contact with the surface.

[0058] Although terms such as “first,” “second,” and “third” may be used herein to describe various components, parts, regions, layers, or sections, these components, parts, regions, layers, or sections are not limited to these terms. Rather, these terms are used only to distinguish one component, part, region, layer, or section from another. Therefore, without departing from the teachings of the examples described herein, the first component, part, region, layer, or section mentioned in the examples may also be referred to as the second component, part, region, layer, or section. 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, a feature defined as “first” or “second” may explicitly or implicitly include at least one of that feature. In the description herein, “a plurality” means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0059] It should be understood that spatial relative terms, such as “above,” “upper,” “below,” and “lower,” are used herein to describe the relationship between one element and another shown in the figures. In addition to the orientation depicted in the figures, these spatial relative terms are also intended to encompass different orientations of the device in use or operation. For example, if the device in the figures is flipped, an element described as “above” or “upper” relative to another element would be “below” or “lower” relative to that other element. Thus, depending on the spatial orientation of the device, the term “above” encompasses both above and below orientations. Devices may have other orientations (e.g., rotated 90 degrees or in other orientations), and the spatial relative terms used herein should be interpreted accordingly.

[0060] Furthermore, the term “exemplary” is used herein to mean serving as an example, instance, or illustration. Any aspect or design described herein as “exemplary” is not necessarily to be construed as advantageous compared to other aspects or designs. Rather, the use of the term “exemplary” is intended to present the concept in a concrete manner. As used herein, the term “or” is intended to mean an inclusive “or” rather than an exclusive “or.” That is, unless otherwise specified or clear from the context, “X applies A or B” is intended to mean any of the natural inclusive arrangements. That is, “X applies A or B” satisfies any of the foregoing instances if X applies A; X applies B; or both X applies A and B. Additionally, unless otherwise specified or clear from the context to refer to the singular form, the articles “a” and “an” as used in this application and the appended claims are generally understood to mean “one or more.”

[0061] Likewise, although the present disclosure has been described and illustrated with respect to one or more implementations, equivalent alterations and modifications will become apparent to those skilled in the art that do not depart from the true spirit and scope of the disclosure. The present disclosure includes all such modifications and alterations and is limited only by the scope of the following claims. In particular regard to the various functions performed by the above described components (e.g., elements, resources, etc.), the terms (including a reference to a "means") used to describe such components are intended to correspond, unless otherwise indicated, to any component which performs the described function (e.g., a functional equivalent), even though not structurally equivalent to the disclosed structure. In addition, although a particular feature of the disclosure can have been disclosed with respect to only one of several implementations, other implementations can include the particular feature. For example, the features of one implementation can be combined with those of another implementation. Furthermore, to the extent that the terms "includes", "including", "has", "have", "having", "contains", "containing", or variants thereof are used in either the detailed description or the claims, these terms are intended to be inclusive in a manner similar to the term "comprising". It is intended that each of the claims is defined not only by the elements literally described, but also by equivalent elements falling within the scope of the claims.

[0062] Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the features of the disclosure disclosed herein. It is intended that the present disclosure be considered as including any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such steps, compositions, components, and / or elements known in the art to be appropriate. It is intended that the specification and examples be considered exemplary only, with the true scope and spirit of the disclosure being indicated by the following claims.

[0063] It is to be understood that the present disclosure is not limited to the precise construction described and illustrated above and that various modifications and changes can be made therein without departing from the scope of the present disclosure. The scope of the present disclosure is limited only by the claims that follow.

Claims

1. A fan assembly comprising: A fan end cover, a connecting piece and a magnetic ring are included, the connecting piece is connected between the fan end cover and the magnetic ring along a fan axial direction, wherein the fan end cover includes an end face part facing the connecting piece along the axial direction, a contact area between the connecting piece and the end face part is at least greater than 1419mm 2 .

2. The fan assembly of claim 1, wherein, The contact area of the connecting member with the end face portion is 1419 mm 2 8960 mm 2 .

3. The fan assembly of claim 1, wherein, The fan end cover includes a protrusion extending from the end face portion in the axial direction toward the connecting piece, the protrusion being axially inserted into the connecting piece.

4. The fan assembly of claim 3, wherein, At least a portion of the contact surface of the connecting piece with the end face portion is configured to extend radially outward from a radially outer side of the protrusion.

5. The fan assembly of claim 3, wherein, The protrusion includes a plurality of positioning posts arranged circumferentially along the fan end cover, the contact surface of the connecting piece with the end face portion being configured to be disposed on both radially inner and outer sides of the positioning posts.

6. The fan assembly of claim 1, wherein, The connecting piece is in contact with the fan end cover at a radially outer edge of the end face portion.

7. The fan assembly of claim 1, wherein, The contact surface of the connecting piece with the end face portion is configured to be disposed radially spaced from a radially outer edge of the end face portion.

8. The fan assembly of claim 7, wherein, The connecting piece includes a shoulder portion disposed opposite the end face portion in the axial direction.

9. The fan assembly of claim 1, wherein, The contact surface of the connecting piece with the end face portion is configured to be disposed radially spaced.

10. The fan assembly of claim 1, wherein, The connecting piece includes a notched portion between axial ends of the connecting piece.

11. An air conditioner indoor unit characterized by comprising: A fan assembly including the fan assembly according to any one of claims 1-10.

Images