Motor support for centrifugal fan, fan assembly and air treatment equipment

Abstract

The utility model provides a motor support for a centrifugal fan, a fan assembly and air processing equipment, which can improve the heat dissipation effect of a motor. The motor support for the centrifugal fan is used for supporting a motor, the motor is provided with a motor body and a rotating shaft extending in the axial direction, the motor support for the centrifugal fan comprises a containing part and a base part, and the containing part is provided with a first opening and contains the motor body; the cover cap is arranged above the first opening in a covering mode, the cover cap is connected with at least one of the containing part and the base part so that the motor can be fixed to the containing part, the containing part is provided with a side wall, and a side wall opening is formed in the side wall.

Description

Technical Field

[0001] The utility model relates to a motor bracket for a centrifugal fan, a fan assembly and an air handling device. Background Art

[0002] A known motor bracket for an air handling device is fixedly installed inside the housing of the air handling device. For the purpose of stably supporting the motor, etc., the motor is wrapped in the installation sheet metal, which will cause insufficient heat dissipation and may lead to problems such as reduced motor life. Summary of the Utility Model

[0003] The present utility model is completed in view of the above problems, and aims to provide a motor bracket for a centrifugal fan, a fan assembly and an air handling device, which can improve the heat dissipation effect of the motor.

[0004] To achieve the above object, a first aspect of the present utility model provides a motor bracket for a centrifugal fan, which is used to support a motor. The motor has a motor main body and a rotating shaft extending along the axial direction, and includes: a receiving part and a base part. The receiving part has a first opening and receives the motor main body; and a cover is arranged above the first opening, and the motor is fixed to the receiving part by connecting the cover with at least one of the receiving part and the base part. The receiving part has a side wall, and a side wall opening is provided on the side wall.

[0005] According to the motor bracket for a centrifugal fan of the present utility model, a side wall opening is provided on the side wall of the receiving part of the motor bracket, which is beneficial to improving the heat dissipation effect of the motor.

[0006] In addition, in the motor bracket for a centrifugal fan of the present utility model, it may also be that the base part is connected to the receiving part, and the base part has base heat dissipation holes. Thus, after the air flow enters, it goes from bottom to top, taking away the heat of the motor.

[0007] In addition, in the motor bracket for a centrifugal fan of the present utility model, it may also be that cover heat dissipation holes are provided on the cover. Thus, the heat dissipation effect of the motor can be further improved.

[0008] In addition, in the motor bracket for a centrifugal fan of the present utility model, it may also be that there is a gap between the outer peripheral edge of the cover and the inner wall surface of the side wall. Thus, the heat dissipation effect of the motor can be further improved.

[0009] In addition, in the motor bracket for a centrifugal fan of the present utility model, it may also be that the receiving part has a bottom wall, and a bottom wall opening is provided on the bottom wall. Thus, the heat dissipation effect of the motor can be further improved.

[0010] A second aspect of the present utility model provides a fan assembly, comprising: any one of the above motor brackets for centrifugal fans; and a centrifugal fan, the centrifugal fan comprising a volute and an impeller, the volute being used for accommodating the impeller, the impeller being driven by the motor, and the centrifugal fan being disposed on one side of the axial direction of the accommodating portion.

[0011] In addition, in the above fan assembly, it may also be that there is a gap between the inner wall surface of the side wall and the motor body. Thus, the heat dissipation effect of the motor can be further improved, and it can also prevent the motor from directly contacting the inner wall surface of the accommodating portion and generating noise due to vibration during the operation of the motor, which can play a role in noise reduction.

[0012] In addition, in the above fan assembly, it may also be that the volute is provided with a volute fixing portion, and the volute is fixedly connected to the motor bracket for the centrifugal fan through the volute fixing portion. Thus, the centrifugal fan can be directly fixed on the housing of the air handling device through the motor bracket for the centrifugal fan, which can reduce the assembled parts and simplify the installation steps.

[0013] A third aspect of the present utility model provides an air handling device, comprising any one of the above fan assemblies. The air handling device is one of a total heat exchanger, a humidifying device, a fresh air machine, and a blower.

[0014] In addition, in the above air handling device, it may also be that it further comprises a heat exchange core body, and the side wall opening is disposed on one side of the air outlet surface facing the heat exchange core body. Thus, when the air flow flowing out from the heat exchange core body passes through the side wall opening, it can quickly take away the heat dissipated by the motor, and can further improve the heat dissipation effect of the motor. Description of the Drawings

[0015] Figure 1 is a schematic perspective view of an air handling device according to an embodiment of the present utility model.

[0016] Figure 2 is a schematic bottom view of an air handling device according to an embodiment of the present utility model, with the bottom plate of the housing omitted.

[0017] Figure 3 is a schematic perspective view of a fan assembly included in an air handling device according to an embodiment of the present utility model.

[0018] Figure 4 is a schematic cross-sectional view of a fan assembly included in an air handling device according to an embodiment of the present utility model.

[0019] Figure 5 is a schematic perspective view of a motor bracket for a centrifugal fan accommodating a motor body.

[0020] Figure 6It is a cross-sectional view schematically showing a motor bracket for a centrifugal fan that houses a motor body.

[0021] Figure 7 It is a perspective view of a cover.

[0022] Figure 8 It is a bottom view of a motor bracket for a centrifugal fan.

[0023] Figure 9 It is a perspective view schematically showing a motor bracket for a centrifugal fan of another embodiment.

[0024] Figure 10 It is a bottom view schematically showing a motor bracket for a centrifugal fan of another embodiment.

[0025] (Reference Signs)

[0026] 1 Air handling equipment

[0027] 10 Fan assembly

[0028] 12 Centrifugal fan

[0029] 111 Motor

[0030] 112, 112A Motor brackets for centrifugal fans

[0031] 122 Volute

[0032] 122b1 Volute fixing part

[0033] 1122, 1122A Covers

[0034] DZ, DZA Base parts

[0035] H1, HA1 Side wall openings

[0036] H4 Base heat dissipation holes

[0037] H5 Cover heat dissipation holes

[0038] SN, SNA Receiving parts

[0039] SN1, SNA1 Side walls

[0040] SN3 First opening

[0041] SP Receiving space Detailed implementation manners

[0042] Hereinafter, with reference to the accompanying drawings, the technical solutions of the embodiments and modified examples of the present utility model will be described. In addition, the scope of the present utility model is not limited to the following embodiments and modified examples, and can be arbitrarily changed within the scope of the technical idea of the present utility model. In addition, in the following drawings, in order to facilitate the understanding of each structure, the actual structure may sometimes be different from the scale, quantity, etc. in each structure.

[0043] In the following description, the direction parallel to the axis L of the rotating shaft 1111 is referred to as the "axial direction". In addition, in the following description, the radial direction centered on the axis L is simply referred to as the "radial direction", and the circumferential direction centered on the rotation axis is simply referred to as the "circumferential direction".

[0044] Here, for convenience of description, three mutually orthogonal directions are set as the X direction, the Y direction, and the Z direction, and the Z direction is parallel to the axis L of the rotating shaft 1111. And one side of the X direction is set as X1, the other side of the X direction is set as X2, one side of the Y direction is set as Y1, the other side of the Y direction is set as Y2, one side of the Z direction is set as Z1, and the other side of the Z direction is set as Z2.

[0045] For convenience, sometimes the Z1 direction is defined as the upward direction and the Z2 direction is described as the downward direction. However, the above definition of the up and down directions does not limit the actual orientation and positional relationship of each structural element of the air handling device 1.

[0046] <Embodiment 1>

[0047] (Overall Structure of Air Handling Device)

[0048] Figure 1 is a perspective view schematically showing the air handling device 1 of the present embodiment. Figure 2 is a bottom view schematically showing the air handling device 1 of the present embodiment, in which the bottom plate of the housing is omitted.

[0049] The air handling device 1 is, for example, one of a total heat exchanger, a humidifying device, a fresh air blower, and a blower. As Figure 1 and Figure 2 shown, the air handling device 1 includes a fan assembly 10, a heat exchange core HX, another fan assembly 20, and a housing KT. The fan assembly 10, the heat exchange core HX, and another fan assembly 20 are housed inside the housing KT.

[0050] The housing KT has a top plate, a bottom plate KT1 spaced apart from the top plate, and side plates extending from the periphery of the top plate to the periphery of the bottom plate KT1 (the side plates can be formed separately from the top plate and the bottom plate, or integrally formed with the top plate and the bottom plate). An air inlet JF, an air supply outlet SF, a return air inlet HF, and an exhaust outlet PF are respectively formed on the side plates of the housing KT. Inside the housing KT, there can be formed, for example, an air supply path from the air inlet JF to the air supply outlet SF, an exhaust path from the return air inlet HF to the exhaust outlet PF, or an internal circulation path from the return air inlet HF to the air supply outlet SF. The air inlet JF and the exhaust outlet PF lead to the outside, and the air supply outlet SF and the return air inlet HF lead to the inside. The air inlet JF and the air supply outlet SF can be located at two corner portions of the housing KT arranged opposite each other along one diagonal, and the return air inlet HF and the exhaust outlet PF can be located at two corner portions of the housing KT arranged opposite each other along the other diagonal.

[0051] The heat exchange core HX is located between the air inlet JF and the air supply outlet SF, and between the return air inlet HF and the exhaust outlet PF. The total heat exchange core HX has a plurality of stacked chips to form a first air flow channel constituting the air supply path; and a second air flow channel constituting the exhaust path, and the air flowing through the first air flow channel can exchange heat and water vapor with the air flowing through the second air flow channel.

[0052] The fan assembly 10 is disposed in the air supply path inside the housing KT. Another fan assembly 20 is disposed in the exhaust path inside the housing KT. The outdoor air is sucked into the air inlet JF under the action of the fan assembly 10, flows through the heat exchange core HX, and then enters the room through the air supply outlet SF. The indoor air is sucked into the return air inlet HF under the action of the other fan assembly 20, flows through the heat exchange core HX, and is then discharged to the outside through the exhaust outlet PF. Thus, the air from the outside and the air from the inside form a cross flow in the heat exchange core HX, and heat exchange and water vapor exchange occur between them.

[0053] In addition, at least one of the bottom plate KT1 and the top plate of the housing KT is provided with an installation and maintenance opening through which the total heat exchange core HX can enter and exit, and an installation and maintenance cover plate KT2 for opening and closing the installation and maintenance opening.

[0054] (Structure of the fan assembly)

[0055] Figure 3 is a perspective view schematically showing the fan assembly 10 included in the air handling device 1 of the present embodiment. Figure 4 is a cross-sectional view schematically showing the fan assembly 10, showing a view cut along a plane passing through the axis L. Figure 5 is a perspective view schematically showing the motor bracket and the motor. Figure 6 is a cross-sectional view schematically showing the motor bracket and the motor, showing a view cut along a plane passing through the axis L. Figure 7It is a perspective view showing the cover 1122. Figure 8 It is a bottom view showing the motor bracket 112 for a centrifugal fan as viewed from the Z1 side.

[0056] As Figure 3 and Figure 4 shown, the fan assembly 10 includes a motor bracket for a centrifugal fan (sometimes simply referred to as a "motor bracket") 112 for supporting a motor, a motor 111, and a centrifugal fan 12. In addition, another fan assembly 20 may have the same structure as the fan assembly 10.

[0057] The centrifugal fan 12 is provided on the axial side (Z2 side) of the motor bracket 112 for a centrifugal fan (the following housing portion SN). The centrifugal fan 12 includes an impeller 121, a volute 122, and an air outlet 123 formed in the volute 122. The impeller 121 of the centrifugal fan 12 is driven by the motor 111. The motor 111 has a motor body 111a and a rotating shaft 1111 extending in the axial direction. The motor body 111a is, for example, a DC motor and has a stator and a rotor that rotates relative to the stator. The rotating shaft 1111 is provided on the rotor. The volute 122 is used to house the impeller 121. The volute 122 surrounds the impeller 121 and is fixedly connected to the motor bracket 112 for a centrifugal fan. The air outlet 123 is provided corresponding to the air supply port SF.

[0058] The volute 122 is generally composed of an upper volute 122a and a lower volute 122b. An air inlet for sucking air is provided in the central portion of the upper volute 122 and the lower volute 122b. This air inlet is formed by opening a central opening on the upper and lower surfaces of the volute 122 and making the edge on the inner diameter side of the opening smoothly protrude into the interior of the volute 122.

[0059] The lower volute 122b is for fixedly connecting the motor bracket 112 for a centrifugal fan. The lower volute 122b is provided with a plurality of volute fixing portions 122b1 arranged circumferentially ( Figure 4 ). The volute fixing portion 122b1 is, for example, a through hole that axially penetrates the lower volute 122b. By inserting a bolt into the through hole 122b1 and threadedly fastening it to the following outer column P2 of the motor bracket 112 for a centrifugal fan, the motor bracket 112 for a centrifugal fan is fixed to the volute 122. That is, the volute 122 is provided with a volute fixing portion 122b1, and the volute 122 is fixedly connected to the motor bracket 112 for a centrifugal fan through the volute fixing portion 122b1. In addition, a protruding edge protruding toward the Z1 side can be provided at the Z1 side edge of the through hole that serves as the volute fixing portion 122b1 to guide the fixing of the outer column P2 of the motor bracket 112 for a centrifugal fan and the volute 122.

[0060] The rotating shaft 1111 of the motor 111 extends into the volute 122 and is connected to the impeller 121. The upper volute 122a and the lower volute 122b cover the impeller 121 from both sides in the axial direction of the impeller 121, and together enclose an air duct. When the centrifugal fan 12 operates, air flows into the air duct formed by the volute 122 from the air inlets of the lower volute 122b and the upper volute 122a, and is blown out from the air outlet 123 after being pressurized.

[0061] A part of the Z2 side (the centrifugal fan 12 side) of the motor bracket 112 for the centrifugal fan (the accommodation part SN and a part of the motor 111) extends into the interior of the impeller 121, which helps to reduce the size of the fan assembly in the axial direction, is beneficial to the overall miniaturization and thinning of the fan assembly, and thus is beneficial to the overall miniaturization and thinning of the air handling equipment. In addition, a part of the motor bracket 112 for the centrifugal fan is exposed from the volute 122.

[0062] (Structure of the motor bracket for the centrifugal fan)

[0063] In this embodiment, the motor bracket 112 for the centrifugal fan is fixedly installed on the top plate of the housing KT. The motor bracket 112 for the centrifugal fan is fixedly connected to the volute 122.

[0064] The motor bracket 112 for the centrifugal fan includes a bracket main body part 1121 and a cover 1122. For example, the bracket main body part 1121 is an integrally formed resin part, which can achieve lightweight, reduce the number of components, and simplify the assembly. The cover 1122 is fixedly attached to the bracket main body part 1121 in a detachable manner, and a motor installation position is formed between the bracket main body part 1121 and the cover 1122.

[0065] The bracket main body part 1121 includes: an annular base part DZ; and an accommodation part SN. The accommodation part CN has a first opening SN3 and accommodates the motor main body 111a. The base part DZ is connected to the accommodation part SN. The accommodation part SN is provided on the base part DZ and forms an accommodation space SP for accommodating the motor main body 111a. The accommodation part SN is cylindrical, having a side wall SN1 and a bottom wall SN2.

[0066] In this embodiment, there is a gap between the inner wall surface of the side wall SN1 and the motor main body 111a, which is beneficial to dissipating heat from the motor 111, and at the same time can prevent the motor 111 from contacting the side wall SN1 of the accommodation part SN, playing a role in noise reduction.

[0067] As Figure 5As shown, a side wall opening H1 is provided on the side wall SN1, which is beneficial to improving the heat dissipation effect of the motor 111. In this embodiment, the side wall opening H1 is formed by a notch formed by cutting off a part of the circumference of the side wall SN1, and the notch extends from the Z2-side end of the accommodating portion SN toward the Z1-side end of the accommodating portion SN. Preferably, the side wall opening H1 is provided on the side facing the air outlet surface of the heat exchange core HX (for example, the air outlet direction of the heat exchange core HX can be referred to Figure 2 in the arrow). In this way, the side wall opening H1 is provided on the windward surface of the motor bracket 112 for the centrifugal fan, so that the side wall opening can be provided at a position with a large flow rate, accelerating the heat dissipation speed of the motor 111 and further improving the heat dissipation effect of the motor 111.

[0068] In addition, although not shown, a bottom wall opening may be provided on the bottom wall SN2 of the accommodating portion, thereby further improving the heat dissipation effect of the motor 111. The bottom wall opening penetrates the bottom wall SN2 in the axial direction. The shape of the bottom wall opening is not particularly limited and may be circular, polygonal, or irregular.

[0069] The bottom wall SN2 is provided at the Z1-side end of the accommodating portion SN, extends radially inward from the Z1-side end of the inner peripheral surface of the side wall SN1, and a first hole portion H2 is formed in the center. The hole wall of the first hole portion H2 is formed to protrude toward the other side (Z1 side) in the axial direction from the bottom wall SN2. A part of the upper rubber ring R1 is inserted into the first hole portion H2, and a bearing for supporting the Z1-side end side of the rotating shaft 1111 is fitted in the center of the upper rubber ring R1. The upper rubber ring R1 is provided, for example, at the other end (Z1 side) in the axial direction of the motor main body 111a, and may have a flange (large-diameter portion) that expands radially outward from the end portion on the axial side (Z2 side), and the outer diameter of the flange is larger than the inner diameter of the first hole portion H2 to be clamped to the periphery of the first hole portion H2. One or more ridges may be provided on the inner wall surface of the first hole portion H2 for engaging with the upper rubber ring R1.

[0070] The accommodating portion SN has a first opening SN3 at the Z2-side end ( Figure 6 ). The cover 1122 is provided above the first opening SN3. The motor 111 is fixed to the accommodating portion SN by connecting the cover 1122 to at least one of the accommodating portion SN and the base DZ portion. In this embodiment, the cover 1122 is connected to the accommodating portion SN. As Figures 5 to 7As shown, the cover 1122 is generally plate-shaped and has a main body portion ZT and a mounting portion AZ. The main body portion ZT is annular, and a second opening H3 through which the rotating shaft 1111 of the motor 111 passes is formed in the center. When observed along the axial direction, the second opening H3 is circular. A part of the lower rubber ring R2 is inserted into the second opening H3, and a bearing for supporting the middle portion of the rotating shaft 1111 in the axial direction is fitted in the center of the lower rubber ring R2. The lower rubber ring R2 is provided, for example, at the axial one side (Z2) end of the motor main body 111a, and may have a flange extending radially outward from the axial other side (Z1 side) end, and the outer diameter of the flange is larger than the inner diameter of the second opening H3 to be clamped to the peripheral edge of the second opening H3.

[0071] In addition, as Figure 5 shown, the side wall SN1 of the storage portion SN is provided with a plurality of (three in this embodiment) inner columns P1 arranged at equal intervals in the circumferential direction on the outer peripheral surface. Each inner column P1 is provided with an internal threaded hole at the Z2 side end, for example, for screwing and fastening the cover 1122. In addition, the plurality of inner columns P1 may be arranged at unequal intervals.

[0072] The mounting portion AZ of the cover 1122 projects radially outward from the outer peripheral edge of the main body portion ZT, and a plurality of them are arranged at intervals in the circumferential direction corresponding to the inner columns P1. For example, the mounting portion AZ is provided with a hole portion for connecting to the Z2 side end of the inner column P1 through a connecting member such as a screw.

[0073] When observed along the axial direction, there is a gap between the outer peripheral edge of the cover 1122 and the inner wall surface of the side wall SN1, thereby further improving the heat dissipation effect of the motor 111. When observed along the axial direction, the size of the main body portion ZT of the cover 1122 is smaller than the size of the side wall SN1 of the storage portion SN, and the outer peripheral edge of the main body portion ZT of the cover 1122 is closer to the radial inner side than the inner wall surface of the side wall SN1.

[0074] In addition, a hem ZB1 may be provided on the periphery of the cover 1122 to improve the strength of the cover 1122. More specifically, a hem ZB1 that is bent axially is continuously provided at the main body portion ZT and the connecting portion between the main body portion ZT and the mounting portion AZ ( Figure 7 ). For example, the hem ZB1 is bent axially from the cover 1122 to the axial one side (Z2 side). In addition, the cover 1122 is made of, for example, a metal material, plastic, etc. In addition, a hem ZB2 that contacts the small diameter portion of the lower rubber ring R2 may be provided on the peripheral edge of the second opening H3. The hem ZB2 is bent axially from the peripheral edge of the second opening H3 to the axial one side (Z2 side).

[0075] The storage portion SN is provided on the base portion DZ. The base portion DZ is in a substantially frustum cone shape that expands radially outward from the middle of the axial direction of the side wall SN1 of the storage portion SN. The outer peripheral portion of the base portion DZ may extend axially to a position substantially the same as the bottom SN2 (the first hole portion H2) of the storage portion SN.

[0076] In addition, the base portion DZ of the motor bracket 112 for the centrifugal fan further includes a plurality of outer columns P2 arranged circumferentially. The plurality of outer columns P2 extend from the outer peripheral portion of the base portion DZ toward one side in the axial direction and are arranged at equal intervals (or may be arranged at unequal intervals) in the circumferential direction. The motor bracket 112 for the centrifugal fan is fixed to the volute 122 through the volute fixing portion 122b1 of the volute 122 and the outer column P2. For example, the outer column P2 is provided with an internal threaded hole at one end (Z2 side) in the axial direction, and a bolt is inserted into the through hole of the volute 122 serving as the volute fixing portion 122b1 and is threadedly fastened to the internal threaded hole.

[0077] In addition, in the axial direction of the base portion DZ, a part of the accommodation space SP overlaps with the base portion DZ (that is, the accommodation space SP is formed to a position overlapping with the base portion DZ in the axial direction). In the present embodiment, the base portion DZ extends radially outward and toward the Z1 side (the other side in the axial direction) from the middle in the axial direction of the side wall SN1 of the accommodation portion SN. Thus, a part of the Z1 side of the accommodation portion SN overlaps with the setting area of the base portion DZ in the axial direction, which can reduce the axial dimension of the motor bracket 112 for the centrifugal fan, is beneficial to the overall miniaturization and thinning of the fan assembly, and thus is beneficial to the overall miniaturization and thinning of the air handling device. In addition, preferably, the outer peripheral surface of the base portion DZ is smoothly connected to the outer peripheral surface of the side wall SN1 of the accommodation portion SN, so that the air flow can smoothly pass through the outer surface of the motor bracket 112 for the centrifugal fan and enter the centrifugal fan.

[0078] In addition, as Figure 5 shown, the base portion DZ may be provided with a wire groove GX. The position of the wire groove GX in the circumferential direction is substantially the same as that of the side wall opening H1 of the accommodation portion SN. The wire groove GX opens toward one side (Z2 side) in the axial direction. Preferably, the wire groove GX communicates with the side wall opening H1, so that the wiring of wires and the like electrically connected to the motor coil can be easily performed.

[0079] In addition, a plurality of bracket mounting portions 112AZ are arranged circumferentially on the base portion DZ. The bracket mounting portions 112AZ are fixed to the housing KT of the air handling device 1 through fasteners such as bolts. In Figure 6 the example, the bracket mounting portion 112AZ is formed as a concave portion recessed from a position radially inside the outer column P2 of the base portion DZ toward the other side (Z1 side) in the axial direction. A through hole penetrating in the axial direction is formed at the bottom of the concave portion, and a bolt is inserted into the through hole and threadedly fastened to the housing KT. Preferably, as Figure 8 shown, a shock pad HC (for example, made of rubber) is provided on the Z1 side of the bracket mounting portion 112AZ, so that the vibration generated by the motor can be suppressed from being transmitted to the housing KT of the air handling device 1.

[0080] As described above, the base portion DZ is in the shape of a frustum of a cone that expands radially outward from the middle of the axial direction of the side wall SN1 of the storage portion SN. As a result, a cavity portion is formed inside the base portion DZ in the radial direction. As Figure 6 and Figure 8 shown, on the inner surface side of the bracket main body portion 1121 (the Z1 direction side in the illustrated example), reinforcing ribs JQ can be provided to enhance the strength of the motor bracket 112 for the centrifugal fan. The reinforcing ribs JQ include at least one of the first reinforcing rib JQA and the second reinforcing rib JQB. The first reinforcing rib JQA extends radially outward from the center side of the base portion DZ (in the illustrated example, a plurality of first reinforcing ribs JQA are provided at equal intervals in the circumferential direction, but it is not limited thereto). The second reinforcing rib JQB is in a ring shape surrounding the center of the base portion DZ (the second reinforcing rib JQB can be provided one in the radial direction or a plurality of them can be provided at a predetermined interval in the radial direction).

[0081] <Embodiment 2>

[0082] Figure 9 is a perspective view schematically showing the motor bracket of Embodiment 2. Figure 10 is a bottom view schematically showing the motor bracket 112A for the centrifugal fan of Embodiment 2 as viewed from the Z1 side. Hereinafter, mainly the differences from the above-described embodiment will be described, and sometimes the same reference numerals will be given to the same constituent elements as those in the above-described embodiment and the repeated description will be omitted.

[0083] The motor bracket 112A for the centrifugal fan is fixedly mounted on the top plate of the housing KT. The motor bracket 112A for the centrifugal fan is fixedly connected to the volute 122.

[0084] The motor bracket 112A for the centrifugal fan includes a bracket main body portion 1121A and a cover 1122A. The cover 1122A is fixedly attached to the bracket main body portion 1121A in a detachable manner, and a motor mounting position is formed between the bracket main body portion 1121A and the cover 1122A.

[0085] The bracket main body portion 1121A includes: an annular base portion DZA; and a storage portion SNA that is provided on the base portion DZA and forms a storage space for storing the motor main body 111a. When viewed along the axial direction, the storage space is circular.

[0086] The storage portion SNA is in a cylindrical shape and has a side wall SNA1 and a bottom wall. The side wall SNA1 is in a cylindrical shape. The motor main body 111a is stored in the storage portion SNA. As Figure 9As shown, a plurality of side wall openings HA1 are provided on the side wall SNA1, which is beneficial to improving the heat dissipation effect of the motor 111. In this embodiment, each side wall opening HA1 is constituted by a notch formed by cutting off a part of the circumference of the side wall SNA1, and the notch extends from the Z2-side end of the storage part SNA towards the Z1-side end of the storage part SAN. The bottom wall of the storage part SNA is provided at the Z1-side end of the storage part SNA.

[0087] On the outer peripheral surface of the side wall SNA1 of the storage part SNA, a plurality of (four in this embodiment) inner columns P1 are provided. Each inner column P1 is provided with an internal threaded hole at the Z2-side end, for example, for screw fastening of the cover 1122A.

[0088] The storage part SNA has a first opening at the Z2-side end. The cover 1122A is covered above the first opening. The cover 1122A is integrally plate-shaped. When observed along the axial direction, the cover 1122 has a circular outer contour as a whole, and a second opening H3 for the rotation shaft 1111 of the motor 111 to pass through is formed in the center. A plurality of mounting parts AZA are provided on the outer periphery of the cover 1122A.

[0089] The mounting part AZA has a part protruding radially outward from the outer periphery of the cover 1122A, and a plurality of them are provided corresponding to the inner columns P1. For example, the mounting part AZA is provided with a hole part for connecting to the Z2-side end of the inner column P1 through a connecting member such as a screw.

[0090] A hem ZBA may be provided on the periphery of the cover 1122A to improve the strength of the cover 1122A. When observed along the axial direction, the outer shape of the cover 1122A is slightly larger than the side wall SNA1 of the storage part SNA. The hem ZBA bends towards the other axial side (Z1-side) from the cover 1122 and is in contact with the side wall SNA1 of the storage part SNA, or faces the side wall SNA1 of the storage part SNA with a small gap therebetween in the radial outer side. In addition, the cover 1122A is made of a metal material, plastic, etc., for example.

[0091] In this embodiment, a cover heat dissipation hole H5 is further provided on the cover 1122A, which is beneficial to further improving the heat dissipation effect of the motor 111. The cover heat dissipation hole H5 extends in an arc shape, for example (but not limited to this, it may also be other shapes such as circular or rectangular). A plurality of cover heat dissipation holes H5 are arranged in the circumferential direction (but not limited to this, it may also be provided only one, or may be formed to be arranged in the radial direction).

[0092] The storage part SNA is provided on the base part DZA. The base part DZA is in the shape of a frustum of a cone that expands radially outward from the middle of the axial direction of the storage part SNA.

[0093] The base portion DZA of the centrifugal fan motor bracket 112A further includes a plurality of outer columns P2 arranged in a circumferential direction. The centrifugal fan motor bracket 112A is fixed to the volute 122 by the volute fixing portion 122b1 of the volute 122 and the outer columns P2.

[0094] Furthermore, the base portion DZA is provided with a plurality of bracket attachment portions 112AZ arranged in a circumferential direction. The bracket attachment portions 112AZ are fixed to the housing KT of the air handling device 1 by fasteners such as bolts.

[0095] In this embodiment, the base portion DZA has a base heat dissipation hole H4, so that the airflow can pass through the base heat dissipation hole H4 to take away the heat emitted by the motor, further improving the heat dissipation effect. There are multiple base heat dissipation holes H4 arranged in the circumferential direction (but not limited to this, only one can be provided, or multiple can be arranged in the radial direction). Figure 9 In the example of FIG. 1 , the base heat dissipation hole H4 is formed in the base portion DZA at a position radially inward of the outer column P2 and at a position different from the bracket mounting portion 112AZ.

[0096] The centrifugal fan motor bracket 112A also has a front reinforcing rib JQC. For example, the front reinforcing rib JQC rises from the outer surface of the base portion DZA toward the Z2 side and connects the inner column P1 and the outer column P2. By providing the front reinforcing rib JQC, the centrifugal fan motor bracket 112A can be reinforced and the strength of the centrifugal fan motor bracket 112A can be improved.

[0097] In this embodiment, a reinforcing rib JQ may be provided on the inner surface side (Z1 direction side in the example shown) of the base portion DZA to enhance the strength of the centrifugal fan motor bracket 112. The reinforcing rib JQ may include at least one of a first reinforcing rib JQA extending in the radial direction and a second reinforcing rib JQB extending in the circumferential direction ( Figure 10 ).

[0098] The present invention is described above by way of example in conjunction with the accompanying drawings. It is obvious that the specific implementation of the present invention is not limited to the above-mentioned embodiments.

[0099] For example, in the above-mentioned embodiment, the side wall openings H1 and HA1 are formed as notches extending from the Z2 side ends of the side walls SN1 and SNA1 of the storage parts SN and SNA toward the Z1 side ends. However, the invention is not limited thereto, and the side wall openings H1 and HA1 may also be formed in a form with a smaller axial dimension (the side wall openings H1 and HA1 may not extend to the axial ends of the side walls SN1 and SNA1), for example, may be formed as through holes penetrating the side walls SN1 and SNA1 of the storage parts SN and SNA, and the shape thereof is not particularly limited, and may be circular, polygonal, or irregular.

[0100] In addition, in the above-described embodiment, the storage portions SN and SNA have side walls SN1 and SNA1 that are circular when viewed axially, but are not limited thereto, and the side walls SN1 and SNA1 may be replaced by prism-shaped portions.

[0101] In addition, in the above-described embodiment, in the axial direction, a part of the storage space overlaps with the base portions DZ and DZA, but is not limited thereto, and the storage space may be formed such that the whole is on the Z2 side of the base portion.

[0102] In addition, in the above-described embodiment, the volute 122 is fixed to the housing KT (e.g., the top plate) via the centrifugal fan motor brackets 112 and 112A. However, it is not limited thereto, and the volute 122 may also be fixed to the housing KT (e.g., the top plate) via sheet metal or the like. Mounting feet may also be integrally formed on the volute 122 for mounting to the housing KT (e.g., the top plate).

[0103] In addition, in the above-described embodiment, the number and arrangement of the reinforcing ribs JQ can be changed as needed, and in some cases, the reinforcing ribs JQ may be omitted.

[0104] In addition, in the above-described Embodiment 1, the wire groove GX is provided in the base portion DZ, but is not limited thereto, and may also be provided in the storage portion SN, or may be provided in both the storage portion SN and the base portion DZ.

[0105] In addition, in the above-described Embodiment 1, a base heat dissipation hole may also be provided in the base portion DZ, and a cover heat dissipation hole may be provided in the cover 1122.

[0106] In addition, in the above-described Embodiment 1, the air treatment device 1 may also not include the other fan assembly 20 and the air return port HF. In this case, the heat exchange core HX may also be omitted.

[0107] The specific embodiments of the present utility model have been specifically described above in conjunction with the accompanying drawings. However, it can be understood that the above description does not limit the present utility model in any way, and the technical features in each embodiment can be combined with each other in any way to form new embodiments. In addition, after understanding the above specific embodiments, those skilled in the art can make various other modifications and changes to the present utility model as needed. These do not deviate from the essence of the present utility model.

Claims

1. A motor bracket for a centrifugal fan, which is used to support a motor. The motor has a motor body and a rotating shaft extending axially. It is characterized in that Comprising: A receiving portion and a base portion. The receiving portion has a first opening and receives the motor body. And A cover, which is arranged above the first opening. The motor is fixed to the receiving portion by connecting the cover with at least one of the receiving portion and the base portion. The receiving portion has a side wall, and a side wall opening is provided on the side wall.

2. The motor bracket for a centrifugal fan according to claim 1, wherein The base portion is connected to the receiving portion, and the base portion has base heat dissipation holes.

3. The motor bracket for a centrifugal fan according to claim 1, wherein Cover heat dissipation holes are provided on the cover.

4. The motor bracket for a centrifugal fan according to claim 1, wherein A gap is provided between the outer peripheral edge of the cover and the inner wall surface of the side wall.

5. The motor bracket for a centrifugal fan according to claim 1, wherein The receiving portion has a bottom wall, and a bottom wall opening is provided on the bottom wall.

6. A fan assembly, characterized in that, Comprising: The motor bracket for a centrifugal fan according to any one of claims 1 to 5; And A centrifugal fan, which includes a volute and an impeller. The volute is used to receive the impeller, and the impeller is driven by the motor. The centrifugal fan is arranged on one side of the axial direction of the receiving portion.

7. The fan assembly according to claim 6, wherein A gap is provided between the inner wall surface of the side wall and the motor body.

8. The fan assembly according to claim 6, wherein A volute fixing portion is provided on the volute, and the volute is fixedly connected to the motor bracket for a centrifugal fan through the volute fixing portion.

9. An air treatment device, characterized in that, Comprising the fan assembly according to any one of claims 6 to 8.

10. The air treatment device according to claim 9, wherein The air treatment device is one of a total heat exchanger, a humidifying device, a fresh air machine, and a blower.

11. The air treatment device according to claim 9, wherein It further includes a heat exchange core body, The side wall opening is arranged on the side of the air outlet surface facing the heat exchange core body.

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