Reversely-installed high-speed fan

Abstract

The utility model relates to the technical field of fans, and discloses a reversely-installed high-speed fan which comprises a fan shell, a turbine and a motor. The fan shell comprises a first side and a second side which are opposite to each other, and an air inlet through hole is formed in the first side; the turbine is arranged in the fan shell and located between the first side and the second side. The motor comprises a motor body and an output shaft which are connected with each other, the motor body is located on the first side, and the output shaft extends into the fan shell from the air inlet through hole and is in transmission connection with the turbine. The motor body and the air inlet through hole are arranged on the same side of the fan shell, and the output shaft penetrates through the air inlet through hole and is in transmission connection with the turbine, so that air flows through the motor body and the output shaft before entering the air inlet through hole, and heat dissipated by the motor body and the output shaft is taken away; and thus, effective heat dissipation of the motor is realized.

Description

Technical Field

[0001] The present disclosure relates to the technical field of fans, and in particular to a reverse-mounted high-speed fan. Background Art

[0002] CN220204158U discloses a dust-proof centrifugal fan, in which the motor is arranged on one side of the fan housing, and the air inlet is arranged on the other side of the fan housing. Since the air entering the fan housing from the air inlet directly flows out from the air outlet arranged on the upper part of the fan housing, it is not conducive to the heat dissipation of the motor.

[0003] Therefore, the prior art still needs to be improved. Summary of the Utility Model

[0004] In view of the defects of the prior art, the present disclosure provides a reverse-mounted high-speed fan, aiming to solve the technical problem that in the centrifugal fan in the related art, the motor is arranged on one side of the fan housing, and the air inlet is arranged on the other side of the fan housing. Since the air entering the fan housing from the air inlet directly flows out from the air outlet arranged on the upper part of the fan housing, it is not conducive to the heat dissipation of the motor.

[0005] The technical solutions adopted by the present disclosure to solve the above technical problems are as follows:

[0006] The present disclosure discloses a reverse-mounted high-speed fan, including:

[0007] A fan housing, including opposite first and second sides; the first side is provided with an air inlet through hole;

[0008] A turbine, arranged inside the fan housing and located between the first side and the second side; and

[0009] A motor, including a motor body and an output shaft connected to each other; the motor body is located on the first side, and the output shaft extends into the fan housing from the air inlet through hole and is in transmission connection with the turbine.

[0010] In some embodiments, a first flange is fixed to the first side, and the first flange is provided with the air inlet through hole; a second flange is fixed between the motor body and the output shaft, and the second flange is detachably connected to the first flange.

[0011] In some embodiments, there is a gap at the connection between the first flange and the second flange, and the gap communicates with the air inlet through hole.

[0012] In some embodiments, the second flange is provided with a flange through hole, and the flange through hole communicates with the air inlet through hole.

[0013] In some embodiments, the second flange is screwed to the first flange without a gap.

[0014] In some embodiments, one side of the turbine away from the second side abuts against a turbine bearing, and the turbine bearing abuts against the inner surface of the blower housing. The output shaft sequentially passes through the air inlet through hole, the turbine bearing, and the turbine.

[0015] In some embodiments, the turbine is provided with a turbine through hole, and the output shaft is in clearance fit with the turbine through hole.

[0016] In some embodiments, this reverse-mounted high-speed blower further includes:

[0017] An end cover, located on the second side and detachably connected to the blower housing; the end cover is provided with a support groove, and one end of the output shaft away from the motor body is located in the support groove and is in clearance fit with the support groove.

[0018] In some embodiments, a first bearing is fixed on the second side, and the first bearing is detachably connected to the end cover; alternatively, a second bearing is fixed on the end cover, and the second bearing is detachably connected to the second side.

[0019] In some embodiments, the support groove abuts against the turbine.

[0020] Advantageous effects: In the present disclosure, by arranging the motor body and the air inlet through hole on the same side of the blower housing, and setting the output shaft to pass through the air inlet through hole and be in transmission connection with the turbine, the air will flow through the motor body and the output shaft before entering the air inlet through hole, thereby taking away the heat dissipated by the motor body and the output shaft, and further realizing effective heat dissipation of the motor. Therefore, the present disclosure solves the technical problem in the related art that in a centrifugal blower, the motor is arranged on one side of the blower housing, and the air inlet is arranged on the other side of the blower housing. Since the air entering the blower housing from the air inlet directly flows out from the air outlet arranged on the upper part of the blower housing, it is not conducive to motor heat dissipation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the following will briefly introduce the drawings required for the embodiments. Obviously, the drawings in the following description are only some embodiments of the present disclosure. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0022] Figure 1 is an exploded structural schematic diagram of a reverse-mounted high-speed blower provided in some embodiments of the present disclosure.

[0023] Figure 2 is a three-dimensional structural schematic diagram of a reverse-mounted high-speed blower provided in some embodiments of the present disclosure.

[0024] Figure 3 It is a schematic plan view of an inverted high-speed fan provided by some embodiments in the present disclosure.

[0025] Explanation of reference numerals:

[0026] 41, First flange; 42, Second flange; 43, Gap; 44, Flange through-hole; 52, Support groove; 100, Fan housing; 110, First side; 111, Air inlet through-hole; 120, Second side; 130, Air outlet channel; 200, Turbine; 210, Turbine through-hole; 220, Turbine bearing; 300, Motor; 310, Motor body; 320, Output shaft; 500, End cover. Detailed implementation manners

[0027] Those skilled in the art can understand that, unless specifically stated otherwise, the singular forms "a", "above-mentioned", "afore-mentioned", "the", and "this" used herein may also include the plural forms. It should be further understood that the term "including" used in the specification of the present disclosure means the presence of the described features, integers, steps, operations, elements, and / or modules, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, modules, and / or their groups. It can be understood that when an element is referred to as "connected" or "coupled" to another element, it can be directly connected or coupled to other elements, or there may also be intermediate elements. In addition, the "connection" or "coupling" used herein may include wireless connection or wireless coupling. The phrase "and / or" used herein includes all or any unit and all combinations of one or more related listed items.

[0028] Those skilled in the art can understand that, unless otherwise defined, all terms (including technical terms and scientific terms) used herein have the same meaning as the general understanding of those of ordinary skill in the art to which the present disclosure belongs. It should also be understood that terms such as those defined in a general dictionary should be understood to have a meaning consistent with the meaning in the context of the prior art, and will not be interpreted with an idealized or overly formal meaning unless specifically defined as here.

[0029] Please refer to Figure 1 , the present disclosure provides an inverted high-speed fan, including: a fan housing 100, a turbine 200, and a motor 300.

[0030] The fan housing 100 (i.e., the volute) includes opposite first side 110 and second side 120. The first side 110 is provided with an air inlet through-hole 111 for air inlet (i.e., air suction), and the air inlet through-hole 111 communicates the inside and outside of the fan housing 100; in some embodiments, such as Figure 1As shown, a first flange 41 for connecting other devices (e.g., a flange) is fixed to the first side 110. The first flange 41 is provided with an air inlet through hole 111 (that is, the air inlet through hole 111 communicates the inside of the fan housing 100 and the outside of the first flange 41). The second side 120 may also be provided with a through hole for air inlet, which will not be elaborated here. In some embodiments, as Figure 1 shown, the top end of the fan housing 100 is located between the first side 110 and the second side 120, and an air outlet passage 130 for air outlet (i.e., exhaust air) is provided at the top end.

[0031] The turbine 200 (i.e., the impeller) is disposed inside the fan housing 100 and is located between the first side 110 and the second side 120. The motor 300 includes a motor body 310 and an output shaft 320 that are connected to each other (e.g., in a transmission connection). The motor body 310 is located on the first side 110; that is, the motor body 310 and the air inlet through hole 111 are provided on the same side of the fan housing 100. The output shaft 320 extends into the fan housing 100 from the air inlet through hole 111 and is in transmission connection with the turbine 200 (e.g., sleeved), so that the rotation of the output shaft 320 can drive the turbine 200 to rotate to suck air from the air inlet through hole 111 into the fan housing 100; in some embodiments, as Figure 1 shown, the turbine 200 is provided with a turbine through hole 210, and the output shaft 320 is in clearance fit with the turbine through hole 210, thereby realizing the transmission connection between the output shaft 320 and the turbine 200. The top end of the output shaft 320 passes through the turbine 200 and is located on the second side 120. In some embodiments, as Figure 1 shown, one side of the turbine 200 away from the second side 120 abuts against the turbine bearing 220, and the turbine bearing 220 abuts against the inner surface of the fan housing 100 to fix the turbine bearing 220 and the fan housing 100 together. The output shaft 320 sequentially passes through the air inlet through hole 111, the turbine bearing 220, and the turbine 200, so that the turbine bearing 220 can support the turbine 200 and effectively prevent the turbine 200 from displacing inside the fan housing 100.

[0032] For the reverse-mounted high-speed fan provided by the present disclosure, by arranging the motor body and the air inlet through hole on the same side of the fan housing and arranging the output shaft to pass through the air inlet through hole and be in transmission connection with the turbine, the air will flow through the motor body and the output shaft before entering the air inlet through hole, and will flow through the aforementioned turbine bearing after entering the air inlet through hole, thereby taking away the heat dissipated by the motor body, the output shaft, and the turbine bearing, and thus effectively dissipating the heat of the motor. Therefore, the present disclosure solves the technical problem in the related art that the motor of the centrifugal fan is disposed on one side of the fan housing and the air inlet is disposed on the other side of the fan housing. Since the air entering the fan housing from the air inlet directly flows out from the air outlet disposed at the upper part of the fan housing, it is not conducive to motor heat dissipation.

[0033] In some embodiments of the present disclosure, refer to Figure 1 , a second flange 42 for connecting other devices (such as a flange) is fixed between the motor body 310 and the output shaft 320 (that is, between the end of the motor body 310 close to the air inlet through hole 111 and the end of the output shaft 320 far from the air inlet through hole 111). The second flange 42 is detachably connected to the aforementioned first flange 41 (such as by screwing), so as to fix the motor 300 and the fan housing 100, effectively avoiding relative displacement between the motor 300 and the fan housing 100.

[0034] In one implementation of this embodiment, as Figure 3 shown, there is a gap 43 at the connection between the first flange 41 and the second flange 42 (that is, there is a gap 43 between the side surface of the second flange 42 far from the motor body 310 and the side surface of the first flange 41 far from the fan housing 100). The gap 43 communicates with the air inlet through hole 111, so that air can be sucked into the air inlet through hole 111 from the gap 43.

[0035] In another implementation of this embodiment, as Figure 2 shown, the second flange 42 is provided with a flange through hole 44 communicating with the air inlet through hole 111. The flange through hole 44 penetrates both sides of the second flange 42, so that air can be sucked into the air inlet through hole 111 from the side of the flange through hole 44 located at the motor body 310. In this implementation, the second flange 42 can be screwed to the first flange 41 without a gap, that is, the side surface of the second flange 42 far from the motor body 310 abuts against the side surface of the first flange 41 far from the fan housing 100 without a gap, so that air can only be sucked into the air inlet through hole 111 from the side of the flange through hole 44 located at the motor body 310.

[0036] In some embodiments of the present disclosure, refer to Figure 1 , this reverse-mounted high-speed fan further includes an end cover 500. The end cover 500 is located on the second side 120 and is detachably connected to the fan housing 100 (such as by clamping or screwing); in one implementation, a first bearing (or flange) is fixed on the second side 120, and the first bearing (not shown in the figure) is detachably connected to the end cover 500 (such as by clamping or screwing), so as to detachably fix the end cover 500 to the fan housing 100; in another implementation, the second bearing is not fixed on the second side 120, but is fixed on the end cover 500, and the second bearing is detachably connected to the second side 120 (such as by clamping or screwing), so as to detachably fix the end cover 500 to the fan housing 100. In addition, the end cover 500 and the second bearing can also be provided with through holes for air inlet to dissipate heat from the end cover 500, which will not be elaborated here.

[0037] In an implementation manner of this embodiment, as Figure 1 shown, a support groove 52 is formed on one side of the end cover 500 close to the fan housing 100. One end of the output shaft 320 away from the motor body 310 (i.e., the top end of the output shaft 320) is located in the support groove 52 and is in clearance fit with the support groove 52, thereby effectively preventing the output shaft 320 from having relative displacement with the fan housing 100 during rotation. In this implementation manner, the support groove 52 abuts against the turbine 200, so that the support groove 52 can support the turbine 200 and effectively prevent the turbine 200 from displacing within the fan housing 100. It should be noted that the support groove 52 is located on one side of the turbine 200, and the aforementioned turbine bearing 220 is located on the other side of the turbine 200. Both support the turbine 200 simultaneously, thereby being able to improve the first-order frequency of the turbine 200 to a certain extent during rotation.

[0038] It can be understood that in the present disclosure, the orientation or positional relationship indicated by terms such as "length", "width", "height", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "side", "bottom", "inner", and "outer" is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of description and simplification of the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation to the present disclosure.

[0039] It can be understood that in the present disclosure, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the embodiments of the present disclosure, the meaning of "a plurality" is two or more, unless otherwise specifically defined.

[0040] It can be understood that unless otherwise clearly specified and limited, the terms such as "arranged", "installed", "connected", "coupled", and "fixed" in the present disclosure should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0041] The above-mentioned embodiments are only used to illustrate the present disclosure, rather than to limit the scope of the present disclosure. All modifications or changes made without departing from the spirit of the present disclosure fall within the protection scope of the present disclosure.

Claims

1. A reverse-mounted high-speed fan, characterized in that, Comprising: A fan housing, including opposite first and second sides; an air inlet through hole is provided on the first side; A turbine, disposed within the fan housing and located between the first side and the second side; and A motor, including a motor body and an output shaft connected to each other; the motor body is located on the first side, the output shaft extends into the fan housing through the air inlet through hole, and is in transmission connection with the turbine.

2. The reverse-mounted high-speed blower according to claim 1, wherein A first flange is fixed on the first side, and the air inlet through hole is provided on the first flange; a second flange is fixed between the motor body and the output shaft, and the second flange is detachably connected to the first flange.

3. The reverse-mounted high-speed fan according to claim 2, characterized in that, A gap exists at the connection between the first flange and the second flange, and the gap communicates with the air inlet through hole.

4. The reverse-mounted high-speed blower according to claim 2, wherein, The second flange is provided with a flange through hole, and the flange through hole communicates with the air inlet through hole.

5. The reverse-mounted high-speed fan according to claim 4, characterized in that, The second flange is screwed to the first flange without a gap.

6. The reverse-mounted high-speed blower according to claim 1, characterized in that, One side of the turbine away from the second side abuts against a turbine bearing, the turbine bearing abuts against the inner surface of the fan housing, and the output shaft sequentially passes through the air inlet through hole, the turbine bearing, and the turbine.

7. The reverse-mounted high-speed blower according to claim 1, wherein The turbine is provided with a turbine through hole, and the output shaft is in clearance fit with the turbine through hole.

8. The reverse-mounted high-speed fan according to any one of claims 1-7, characterized in that, Further comprising: An end cover, located on the second side and detachably connected to the fan housing; the end cover is provided with a support groove, and one end of the output shaft away from the motor body is located in the support groove and is in clearance fit with the support groove.

9. The reverse-mounted high-speed blower according to claim 8, characterized in that, A first bearing is fixed on the second side, and the first bearing is detachably connected to the end cover; alternatively, a second bearing is fixed on the end cover, and the second bearing is detachably connected to the second side.

10. The reverse-mounted high-speed fan according to claim 8, wherein, The support groove abuts against the turbine.

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