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 magnetic ring comprises an inserting part, the inserting part is inserted into the connecting piece, and the inserting part is inserted into the connecting piece. And the contact area of the inserting part and the connecting piece is not greater than 4812 mm < 2 >. The contact area of the inserting part of the magnetic ring and the connecting piece is set to be not greater than 4812mm < 2 >, so that the contact area of the magnetic ring and the connecting piece is as small as possible under the condition that the magnetic ring and the connecting piece have enough connecting areas, the weak magnetic area of the magnetic ring is reduced as small as possible, and the influence of the weak magnetic area on the performance of the motor is reduced.

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, 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. SUMMARY

[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 the fan axial direction, wherein the magnetic ring comprises a plug-in part, the plug-in part being plugged in the connecting piece, and the contact area between the plug-in part and the connecting piece is not greater than 4812mm 2 .

[0005] Optionally, the contact area between the plug-in part and the connecting piece is not less than 2143mm 2 .

[0006] Optionally, the plug-in part comprises an axial section, the axial section being axially matched with the connecting piece, and the contact area between the axial section and the connecting piece is 1913mm 2 ~2812mm 2 .

[0007] Optionally, the axial section is configured as a ring structure.

[0008] Optionally, the plug-in part comprises a radial section, the radial section being radially protruded from the axial section and radially matched with the connecting piece, and the contact area between the radial section and the connecting piece is 230mm 2 ~2000mm 2 .

[0009] Optionally, the radial section is configured as protruding inwardly and / or outwardly radially from the axial section.

[0010] Optionally, the radial section is configured as a ring structure.

[0011] Optionally, the radial section is configured as a plurality of circumferentially spaced protrusions.

[0012] Optionally, the cross section of the plug-in part is configured as a T shape or an inverted L shape.

[0013] According to a second aspect of the embodiments of the present disclosure, an indoor unit of an air conditioner is provided, which comprises the fan assembly provided by the present disclosure.

[0014] The technical solutions provided by the embodiments of the present disclosure can have the following beneficial effects: the contact area of the plug-in part of the magnetic ring and the connecting piece is set to be not greater than 4812mm 2 In the case that the magnetic ring and the connecting piece have sufficient connection area, the contact area of the magnetic ring and the connecting piece is as small as possible, so as to reduce the magnetic field weakening area of the magnetic ring as much as possible, and reduce the influence of the magnetic field weakening area on the performance of the motor.

[0015] 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

[0016] 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.

[0017] Figure 1 is a partial structural exploded view of a fan assembly according to an exemplary embodiment;

[0018] Figure 2 is a structural schematic view of a magnetic ring according to an exemplary embodiment;

[0019] Figure 3 is a partial structural cross-sectional view of a fan assembly according to an exemplary embodiment;

[0020] Figure 4 is a cross-sectional schematic view of a magnetic ring according to an exemplary embodiment;

[0021] Figure 5 is a partial structural cross-sectional view of a fan assembly according to an exemplary embodiment;

[0022] Figure 6 is a cross-sectional schematic view of a magnetic ring according to an exemplary embodiment;

[0023] Figure 7 is a partial structural cross-sectional view of a fan assembly according to an exemplary embodiment;

[0024] Figure 8 is a partial structural cross-sectional view of a fan assembly according to an exemplary embodiment;

[0025] Figure 9 is a partial structural cross-sectional view of a fan assembly according to an exemplary embodiment;

[0026] Figure 10is a partial structural sectional view of a fan assembly according to an exemplary embodiment.

[0027] BRIEF DESCRIPTION OF DRAWINGS

[0028] 10 - fan end cover, 11 - end face part, 20 - connecting piece, 22 - shoulder part, 23 - grooved part, 30 - magnetic ring, 31 - insertion part, 311 - axial section, 312 - radial section. DETAILED DESCRIPTION

[0029] The exemplary embodiments will be described in detail herein with reference to the accompanying drawings. In the following description, unless otherwise indicated, like numbers in the different drawings represent similar or analogous elements. The following exemplary embodiments described therein represent implementations consistent with the present disclosure. They are not meant to be all inclusive in terms of implementations consistent with the present disclosure. Rather they are merely examples of apparatus consistent with some aspects of the present disclosure as detailed in the appended claims.

[0030] The fan end cover of the cross-flow magnetic fan blade assembly is connected with the magnet structure, 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. The area where the magnetic ring and the connecting piece are connected is prone to become a weak magnetic area, the greater the contact area, the more weak magnetic areas, which affects the waveform of the magnetic ring and thus the performance of the motor.

[0031] To this end, the embodiments of the present disclosure provide a fan assembly, referring to Figure 1 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, i.e., 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 magnetic ring 30 includes an insertion part 31 inserted in the connecting piece 20, and the magnetic ring 30 and the connecting piece 20 can be integrally injection molded. Here, the contact area between the insertion part 31 and the connecting piece 20 is not greater than 4812 mm 2 , that is, the contact area between the part of the magnetic ring 30 inserted into the connecting piece 20 and the connecting piece 20 is not greater than 4812 mm 2 .

[0032] Through the above technical solution, the contact area between the insertion part of the magnetic ring 30 and the connecting piece 20 is set to be not greater than 4812 mm 2 , so that the contact area between the magnetic ring 30 and the connecting piece 20 is as small as possible under the condition that the magnetic ring 30 and the connecting piece 20 have sufficient connection area, so as to minimize the weak magnetic area of the magnetic ring 30 and reduce the influence of the weak magnetic area on the performance of the motor.

[0033] In the embodiments of the present disclosure, the contact area of the plug-in part 31 with the connecting piece 20 is not less than 2143mm 2 , so that the connection of the plug-in part 31 with the connecting piece 20 is more stable.

[0034] Referring to Figures 2 to 6 , the plug-in part 31 can include an axial segment 311, which is used for axial cooperation with the connecting piece 20, that is to say, the axial segment 311 is used for axial insertion into the connecting piece 20, and the axial segment 311 can limit the radial relative displacement of the connecting piece 20 and the magnetic ring 30. In the embodiments of the present disclosure, the contact area of the axial segment 311 with the connecting piece 20 can be 1913mm 2 ~2812mm 2 , so as to have sufficient axial cooperation area, improve the connection stability, and avoid the magnetic ring 30 from generating a larger magnetic field weakening area.

[0035] As shown in Figure 2 , the axial segment 311 can be configured as a ring structure, so that the contact area in the circumferential direction is uniform, and deformation due to local large stress is avoided, which affects the fixing effect of the magnetic ring 30.

[0036] In the embodiments of the present disclosure, referring to Figures 2 to 6 , the plug-in part 31 can include a radial segment 312, which is radially protruded from the axial segment 311 and radially cooperates with the connecting piece 20, that is to say, the radial segment 312 is radially inserted into the connecting piece 20 from the axial segment 311, and the radial segment 312 can at least limit the axial relative displacement of the connecting piece 20 and the magnetic ring 30. In the embodiments of the present disclosure, the contact area of the radial segment 312 with the connecting piece 20 can be 230mm 2 ~2000mm 2 , so as to have sufficient radial cooperation area, improve the connection stability, and avoid the magnetic ring 30 from generating a larger magnetic field weakening area.

[0037] The radial segment 312 can be configured to protrude radially inward from the axial segment 311, or, as shown in Figure 5 and Figure 6 , 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 part of the axial segment 311 and protrude radially outward from part of the axial segment 312, so as to ensure better limiting effect.

[0038] 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 due to local large 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 play a role in limiting the axial position of the connecting piece 20 and the magnetic ring 30.

[0039] In an embodiment, as shown in Figure 1 and Figure 2 , the radial segment 312 can be configured as a plurality of circumferentially spaced protrusions. Arranging the radial segment 312 as a circumferentially spaced structure can not only limit the connection between the connecting piece 20 and the magnetic ring 30 in the axial direction, but also limit the connection between 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.

[0040] Referring to Figure 3 and Figure 4 , the cross section of the plug-in part 31 can be configured as a T shape, that is, the radial segment 312 is configured to protrude radially inward and radially outward from the axial segment 311. Referring to Figure 5 and Figure 6 , the cross section of the plug-in part 31 can be configured as an inverted L shape, that is, the radial segment 312 is configured to protrude radially inward or outward from the axial segment 311. The T shape and the inverted L shape are easier to form than other heterogeneous structures, and can have higher fixing effect.

[0041] 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 welding of the connecting piece with the fan end cover consume a lot of cost. Therefore, the fan end cover 10 of the fan assembly provided in the embodiments of the present disclosure includes an end face part 11 facing the connecting piece 20 in the axial direction, and the connecting piece 20 is in contact with the end face part 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 part 11 is at least greater than 1419mm 2 .

[0042] By the above technical solution, the contact area of the connecting piece 20 and the end face part 11 of the fan end cover 10 is set to be at least greater than 1419mm 2 , so as to ensure that the connecting piece 20 and the end face part 11 have sufficient contact area for fixed connection, and the welding is performed with the smallest possible contact area, so as to save the welding process and welding material cost.

[0043] 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 , so as to achieve the purpose of saving the welding cost as much as possible.

[0044] Referring to Figures 7 to 10The fan end cover 10 can include a protrusion 12 extending from the end face portion 11 in the axial direction towards the connecting piece 20, and the protrusion 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.

[0045] In one embodiment, referring to Figure 5 , Figure 7 to / 9, at least part of the contact surface of the connecting piece 20 and the end face portion 11 can be configured to extend radially outward from the radially outer side of the protrusion 12, and the protrusion 12 contacts the connecting piece on the radially outer side, which facilitates the positioning stability of the protrusion 12, and on the radially outer side, it can facilitate the welding operation and reduce the difficulty of welding.

[0046] Referring to Figure 5 and Figure 10 , the protrusion 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 portion 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 embodiments of the present disclosure, the contact surface of the connecting piece 20 and the end face portion 11 can also be configured to be arranged around the positioning columns.

[0047] Referring to Figure 7 and Figure 8 , the connecting piece 20 can contact the fan end cover 10 at the radially outer edge of the end face portion 11. In the figure, the connecting piece 20 and the end face portion 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 the connecting piece 20 contacting the fan end cover 10 at the radially outer edge of the end face portion 11, and it can also be understood that the connecting piece 20 can also be arranged in axial alignment with the end face portion 11. When the connecting piece 20 is contacted at the radially outer edge of the end face portion 11, the airflow will flow along the outer edge of the connecting piece 20 when the fan rotates, avoiding the generation of vortexes to affect stability or generate noise.

[0048] In some embodiments, as Figures 9 to 10 , the contact surface of the connecting piece 20 and the end face portion 11 is configured to be radially spaced from the radially outer edge of the end face portion 11, that is, there is no connecting piece 20 arranged at the radially outer edge of the end face portion 11, which can make the operation space at the outer edge larger and improve the operation convenience.

[0049] The connecting piece 20 can include a shoulder 22, which can be arranged opposite to the end face 11 in the axial direction. The shoulder 22 facing the end face 11 can be formed by the contact surface of the connecting piece 20 and the radially outer edge of the end face 11 being arranged radially spaced apart. The shoulder 22 can be marked, for example, with angle marks around the shoulder 22, to provide an identification for subsequent balance tests and facilitate observation by the user. The shoulder 22 can be configured in a rounded corner structure, which can provide a better observation angle.

[0050] In the embodiments of the present disclosure, as shown in Figure 5 、 Figure 7 and Figure 10 , the contact surface of the connecting piece 20 and the end face 11 can be arranged radially spaced apart, i.e., the contact surface is divided into several sections, so as to facilitate connection at different positions, ensure the connection effect, and minimize the contact area to save costs.

[0051] Referring to Figure 8 , the connecting piece 20 can include a grooved portion 23 between the two axial ends of the connecting piece 20. The grooved portion 23 can reduce the wall thickness of the connecting piece 20 in the axial direction at the corresponding position, so as to match the axial thickness of the connecting piece 20 occupied by the magnetic ring 30, avoid uneven wall thickness of the connecting piece 20 causing a large shrinkage rate, and cause the magnetic ring 30 to be unstable during installation. In the embodiments of Figure 7 , the wall thickness can be reduced by the spacing between the two contact surfaces, and in the embodiments of Figure 5 、 Figure 9 and Figure 10 , the wall thickness can be reduced by the spacing between the contact surface and the radially outer edge of the end face 11.

[0052] 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 here.

[0053] 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.

[0054] 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.

[0055] 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.

[0056] 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.

[0057] 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.

[0058] 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.

[0059] 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.”

[0060] 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 disclosure can be implemented with respect to other implementations that incorporate the particular feature, and that implement other features as disclosed herein, and each of the various implementations have a reasonable expectation of support. Furthermore, to the extent that the terms "includes", "including", "has", "have", "having", or variants thereof are used in either the detailed description or the claims, such terms are intended to be inclusive in a manner similar to the term "comprising".

[0061] 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 specifically intended that the present disclosure include all such modifications and alterations in the application, matter, and scope of the disclosure as fall within the usual practice of the art and are equated with the principles of the disclosure. The specification and examples are to be considered exemplary only, with the true scope and spirit of the disclosure being indicated by the following claims.

[0062] It is to be understood that the present disclosure is not limited to the precise construction described and shown herein and that changes can be made in various embodiments without departing from the scope of the disclosure. The scope of the present disclosure is limited only by the claims appended hereto.

Claims

1. A fan assembly comprising: The fan end cover, the connecting piece and the magnetic ring are included, the connecting piece is connected between the fan end cover and the magnetic ring along the fan axis, wherein the magnetic ring includes a plug-in part, the plug-in part is plugged in the connecting piece, the contact area of the plug-in part with the connecting piece is not more than 4812mm 2 .

2. The fan assembly of claim 1, wherein, The contact area of the plug-in part with the connecting piece is not less than 2143mm 2 .

3. The fan assembly of claim 1, wherein, The spigot comprises an axial segment which axially cooperates with the connector, the contact area of the axial segment with the connector being 1913 mm 2 2812 mm 2 .

4. The fan assembly of claim 3, wherein, The axial segments are configured as annular structures.

5. The fan assembly of claim 3, wherein, The plug-in portion includes a radial segment that projects radially from the axial segment and that radially cooperates with the connection, the contact area of the radial segment with the connection being 230 mm 2 ~2000 mm 2 .

6. The fan assembly of claim 5, wherein, The radial segments are configured to project radially inwards and / or radially outwards from the axial segments.

7. The fan assembly of claim 5, wherein, The radial segments are configured as annular structures.

8. The fan assembly of claim 5, wherein, The radial segments are configured as a plurality of circumferentially spaced projections.

9. The fan assembly of claim 1, wherein, The cross-section of the spigot is configured as a T-shape or an inverted L-shape.

10. An air conditioner indoor unit characterized by comprising: A fan assembly comprising any of the features of claims 1-9.

Images