CN215860845U - Centrifugal fan and machine equipment - Google Patents
Centrifugal fan and machine equipment Download PDFInfo
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- CN215860845U CN215860845U CN202121339596.XU CN202121339596U CN215860845U CN 215860845 U CN215860845 U CN 215860845U CN 202121339596 U CN202121339596 U CN 202121339596U CN 215860845 U CN215860845 U CN 215860845U
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Abstract
The utility model discloses a centrifugal fan and machine equipment, wherein the centrifugal fan comprises a shell, an impeller and a motor; the shell is provided with an air inlet and an air outlet which are communicated with the ventilation cavity, and is also provided with a through hole which is communicated with the ventilation cavity and the installation cavity; the motor comprises a main body and an output shaft, the main body is arranged in the mounting cavity, and one end of the output shaft extends into the ventilation cavity through the through hole; the impeller is fixedly connected with one end of the output shaft, which extends into the ventilation cavity, so as to be rotatably arranged in the ventilation cavity; still communicate through the passageway of taking a breath between installation cavity and the ventilation cavity, the passageway of taking a breath supplies the air in the ventilation cavity and the air in the installation cavity to carry out the replacement. Through the setting, the motor cooling device can perform cooling treatment on the motor in the working process, and the service life of the motor is prolonged.
Description
Technical Field
The utility model relates to the technical field of centrifugal fans, in particular to a centrifugal fan and machine equipment.
Background
The fan is a machine which increases gas pressure and discharges gas by means of input mechanical energy, is a driven fluid machine and can be divided into the following parts according to the flowing direction of the gas: centrifugal fan, axial fan, diagonal fan, and crossflow fan.
The centrifugal fan drives the impeller to do circular motion through the motor so as to suck air from the air inlet and finally discharge the air from the air outlet. Usually, the motor is installed in relative confined space, so sets up, leads to the heat that produces to be difficult to the effluvium in the motor working process, and the radiating effect of motor is relatively poor for the motor burns out very easily after long-time continuous operation, has reduced centrifugal fan's life, and the demand for urgent need improves.
SUMMERY OF THE UTILITY MODEL
The utility model mainly aims to provide a centrifugal fan, which aims to perform heat dissipation treatment on a motor in a working process and prolong the service life of the motor.
In order to achieve the above object, the present invention provides a centrifugal fan, which includes a casing, an impeller and a motor; wherein the content of the first and second substances,
the shell is provided with a ventilation cavity and an installation cavity, the shell is provided with an air inlet and an air outlet, the air inlet and the air outlet are both communicated with the ventilation cavity, the shell is also provided with a through hole, and the through hole is communicated with the ventilation cavity and the installation cavity;
the motor comprises a main body and an output shaft, the main body is arranged in the mounting cavity, and one end of the output shaft extends into the ventilation cavity through the through hole;
the impeller and one end of the output shaft, which extends into the ventilation cavity, are fixedly connected so as to be rotatably arranged in the ventilation cavity;
the installation cavity with still communicate through the passageway of taking a breath between the ventilation cavity, the passageway of taking a breath supplies air in the ventilation cavity with the air in the installation cavity is replaced.
In some embodiments of the present invention, the housing is provided with a ventilation window, the ventilation window communicates with a side of the installation cavity and a side of the ventilation cavity close to each other, and the ventilation window forms the ventilation channel.
In some embodiments of the present invention, two opposite sides of the ventilation window are connected by a reinforcing rib.
In some embodiments of the present invention, the centrifugal fan further includes an end cap made of a heat conductive material, and the end cap abuts against a side of the main body away from the through hole.
In some embodiments of the present invention, a thermally conductive silicone is disposed between the body and the end cap.
In some embodiments of the utility model, a partition is disposed between a surface of the casing facing the end cover and the end cover, the partition divides the installation cavity into an installation area and an air cooling area which are independent of each other, the installation area is communicated with the through hole and used for installing the motor, and the air cooling area is communicated with the ventilation cavity through the ventilation channel.
In some embodiments of the utility model, a partition extending towards the end cap is provided protruding from a surface of the housing facing the end cap to form the partition, and a seal is provided between the partition and the end cap.
In some embodiments of the utility model, the side of the partition facing the end cap is provided with a protrusion, and the sealing member is provided with a groove cooperating with the protrusion.
In some embodiments of the present invention, the housing is provided with a slot structure surrounding the through hole, the slot structure is located in the mounting cavity, one axial end of the slot structure is communicated with the through hole, and the other axial end of the slot structure extends in a direction away from the through hole;
centrifugal fan still includes the sealing washer, the sealing washer includes first section and second section, the internal diameter of second section is less than the internal diameter of first section, first section with the draw-in groove structure cooperation, the inboard of second section with the periphery wall cooperation of main part.
In some embodiments of the present invention, a filling groove extending along a circumferential direction of the second section is recessed on an inner side of the second section, and a filling port communicating with the filling groove is provided on a side of the second section close to or far from the impeller, and the filling groove is used for filling waterproof grease.
The utility model also provides machine equipment which comprises a machine body and the centrifugal fan.
According to the technical scheme, when the centrifugal fan works, the main body of the motor rotates to drive the output shaft and the impeller to rotate, so that air in an external environment is sucked into the ventilation cavity from the air inlet and then discharged into the external environment from the air outlet, and part of the air sucked into the ventilation cavity is guided into the installation cavity through the ventilation channel, generates forced convection with the air in the installation cavity, performs heat exchange, and then flows back into the ventilation cavity through the ventilation channel.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic structural view of an embodiment of a centrifugal fan according to the present invention;
FIG. 2 is a schematic view of an exploded structure of an embodiment of the centrifugal fan of the present invention;
FIG. 3 is a schematic structural view of the lower housing of FIG. 2;
fig. 4 is an enlarged schematic view of a structure at a in fig. 1.
The reference numbers illustrate:
the implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
Referring to fig. 1 and fig. 2, the present invention provides a centrifugal fan 1000, where the centrifugal fan 1000 includes: a housing 100, a motor 200, and an impeller 300.
This casing 100 is formed with ventilation chamber 110 and installation cavity 120, and casing 100 is equipped with air intake 111 and air outlet 112, and air intake 111 and air outlet 112 all communicate with ventilation chamber 110, and casing 100 still is equipped with through-hole 121, and through-hole 121 all communicates with ventilation chamber 110 and installation cavity 120.
Specifically, the housing 100 includes an upper housing 100a and a lower housing 100b, with a ventilation cavity 110 formed between the upper housing 100a and the lower housing 100 b.
By way of example and not limitation, a chamber is formed at a side of the upper case 100a facing the lower case 100b, the lower case 100b is coupled with the upper case 100a and covers an open end of the chamber to form the ventilation chamber 110, the upper case 100a is provided with the intake vent 111 and the outtake vent 112, and the lower case 100b is provided with the mounting chamber 120 and the through hole 121. The upper casing 100a and the lower casing 100b are connected in many ways, the upper casing 100a and the lower casing 100b may be fixedly connected, for example, the upper casing 100a and the lower casing 100b are fixedly connected by bonding, welding, etc., the upper casing 100a and the lower casing 100b may also be detachably connected, for example, the upper casing 100a and the lower casing 100b are connected by screwing, clipping, etc., and the connection is not limited in this respect. In addition, the ventilation chamber 110 may be formed in such a manner that the ventilation chamber 110 may include two portions, which are respectively disposed on the upper case 100a and the lower case 100 b. In addition, a surface of the lower case 100b facing away from the upper case 100a forms a mounting cavity 120.
The motor 200 includes a main body 210 and an output shaft 220, the main body 210 is installed in the installation cavity 120, and one end of the output shaft 220 extends into the ventilation cavity 110 through the through hole 121. The main body 210 may be directly mounted on a wall of the mounting cavity 120, and the main body 210 may also be mounted on the wall of the mounting cavity 120 by an adapter, which is not limited herein.
The through hole 121 may be provided to be fitted to the output shaft 220, or the through hole 121 may be provided to be fitted to the outer peripheral wall of the body 210. Preferably, the through hole 121 is disposed to match with an outer peripheral wall of the main body 210, so that air in the ventilation cavity 110 can flow between the outer peripheral wall of the main body 210 and an inner wall of the through hole 121, thereby enhancing a heat dissipation effect of the main body 210.
The impeller 300 is fixedly connected to an end of the output shaft 220 extending into the ventilation chamber 110, so as to be rotatably installed in the ventilation chamber 110. The impeller 300 is a centrifugal blade, which is a blade that supplies air in the axial direction and discharges air in the radial direction, and applies work by using centrifugal force (depending on the rotation speed and the outer diameter) to increase the pressure of the air. Therefore, the air inlet 111 is opened in the cavity wall of the ventilation cavity 110 in the axial direction of the impeller 300, that is, the cavity wall of the ventilation cavity 110 facing the through hole 121, and the air outlet 112 is opened in the cavity wall of the ventilation cavity 110 in the circumferential direction of the impeller 300.
Specifically, this impeller 300 is equipped with the mounting hole, and the mounting hole and output shaft 220 interference fit, so set up, can make things convenient for the installation and the dismantlement of impeller 300, can strengthen the fixed strength of impeller 300 and output shaft 220 again. In addition, the impeller 300 and the output shaft 220 may be welded together. In addition, the casing 100 is further provided with a limiting groove 113 surrounding the air inlet 111, and one side of the impeller 300, which is back to the mounting cavity 120, is provided with a limiting ring 310 extending into the limiting groove 113, so that the impeller 300 can be limited from shaking during rotation.
The installation cavity 120 is communicated with the ventilation cavity 110 through a ventilation channel 130, and the ventilation channel 130 is used for exchanging air in the ventilation cavity 110 and air in the installation cavity 120. The number of the ventilation channels 130 may be one or more (two or more), the number of the ventilation channels 130 is set according to the sizes of the ventilation cavity 110 and the installation cavity 120, and when the ventilation cavity 110 and the installation cavity 120 are larger, the number of the ventilation channels 130 is increased appropriately; the number of the ventilation passages 130 is appropriately reduced when the ventilation chamber 110 and the installation chamber 120 are small. Obviously, the aperture of the ventilation channel 130 can also be adjusted according to the sizes of the ventilation cavity 110 and the installation cavity 120, and when the ventilation cavity 110 and the installation cavity 120 are large, the aperture of the ventilation channel 130 is appropriately increased; when the ventilation chamber 110 and the installation chamber 120 are small, the aperture of the ventilation passage 130 is appropriately reduced.
Through the above technical scheme, when the centrifugal fan 1000 works, the main body 210 of the motor 200 rotates to drive the output shaft 220 and the impeller 300 to rotate, so that air in the external environment is firstly sucked into the ventilation cavity 110 from the air inlet 111 and then discharged to the external environment from the air outlet 112, and a part of the air sucked into the ventilation cavity 110 is guided into the installation cavity 120 through the ventilation channel 130, and generates forced convection with the air in the installation cavity 120 to perform heat exchange, and then flows back to the ventilation cavity 110 through the ventilation channel 130, so that the heat dissipation treatment can be performed on the motor 200 in the working process by means of the wind generated in the working process of the centrifugal fan 1000, and the service life of the motor 200 is prolonged.
The forced convection is one of the convection heat transfer, that is, the convection of liquid or gas under the influence of external force. Convection refers to the relative flow of fluid due to different temperatures of each part, i.e. the process of transferring heat by the macroscopic flow of fluid (gas or liquid) through each part.
Referring to fig. 1, the ventilation channel 130 may be of various types, and in some embodiments of the present invention, the housing 100 is provided with a ventilation window, the ventilation window communicates with a side of the mounting cavity 120 and a side of the ventilation cavity 110, which are close to each other, and the ventilation window forms the ventilation channel, so that the ventilation channel 130 is integrated into the housing 100, thereby facilitating the formation of the ventilation channel 130.
In addition, the ventilation channel 130 may be a separate pipe structure, and both ends of the pipe structure are respectively communicated with the ventilation cavity 110 and the installation cavity 120.
Referring to fig. 1 to 3, in order to enhance the structural strength of the ventilation window, in some embodiments of the present invention, two opposite sides of the ventilation window are connected by a rib 140.
The number of the reinforcing ribs 140 may be one or more, the number of the reinforcing ribs 140 is set according to the size of the ventilation window, the number of the reinforcing ribs 140 is increased as appropriate when the ventilation window is large, and the number of the reinforcing ribs 140 is decreased as appropriate when the ventilation window is small. When the plurality of reinforcing ribs 140 are provided, the plurality of reinforcing ribs 140 may be arranged at regular intervals along the length direction of the ventilation window, or the plurality of reinforcing ribs 140 may be arranged at irregular intervals along the length direction of the ventilation window, which is not specifically limited herein.
Referring to fig. 1 and 2, in view of the limited heat dissipation effect of the motor 200 only through the ventilation channel 130, in some embodiments of the present invention, in order to enhance the heat dissipation effect of the motor 200, the housing 100 is provided with a mounting opening communicated with the mounting cavity 120, the centrifugal fan 1000 further includes an end cap 400, the end cap 400 is made of a heat conductive material, the end cap 400 covers the mounting opening, the end cap 400 abuts against a side of the main body 210 away from the through hole 121, such that, in the operation process of the motor 200, heat generated by the main body 210 of the motor 200 is conducted to the end cap 400, air in the ventilation cavity 110 is introduced into the mounting cavity 120 through the ventilation channel 130 and blown onto the end cap 400, forced convection is generated with air in the mounting cavity 120, heat exchange is performed, and then the air flows back into the ventilation cavity 110 through the ventilation channel 130, and a side of the end cap 400 opposite to the motor 200 is located in an external environment, also can play and carry out radiating effect to end cover 400, so set up, can cool down end cover 400 to reinforcing motor 200's radiating effect.
By way of example and not limitation, the end cap 400 may be formed from a variety of thermally conductive materials, such as aluminum, steel, iron, copper, and the like. In addition, considering that the thickness of the end cap 400 will determine the heat conduction speed of the end cap 400 and the heat dissipation speed of the end cap 400, the end cap 400 is made of a thin plate, i.e., the ratio of the width to the thickness of the end cap 400 is large, so that the heat conduction speed of the end cap 400 and the heat dissipation speed of the end cap can be increased.
The end cap 400 may be fixed to the housing 100 in various manners, for example, the end cap 400 and the housing 100 may be fixedly connected by bonding, welding, or the like, and the end cap 400 and the housing 100 may also be detachably connected, for example, the end cap 400 and the housing 100 are connected by screwing, bolting, clamping, or the like, which is not limited herein.
Referring to fig. 1, further, in order to ensure the sealing performance of the end cap 400 when the mounting opening is sealed, a clamping groove 150 surrounding the mounting opening is concavely arranged on the outer surface of the housing 100, the end cap 400 includes a cover plate 410 and an annular protrusion 420 convexly arranged on one surface of the cover plate 410, the annular protrusion 420 is matched with the clamping groove 150, and waterproof glue is further driven into the clamping groove 150, so that the sealing performance of the end cap 400 when the mounting opening is sealed can be ensured.
In addition, the mounting cavity 120 may be disposed on the end cap 400, and the mounting cavity 120 may include two parts, one part is disposed on the end cap 400, and the other part is disposed on the housing 100.
Referring to fig. 1, considering that the motor 200 directly abuts against the end cap 400 and the heat of the motor 200 is conducted to the end cap 400 at a relatively slow speed, in order to increase the heat of the motor 200 to be conducted to the end cap 400, in some embodiments of the utility model, a heat conductive silicone 500 is disposed between the main body 210 and the end cap 400.
The main purpose of the thermally conductive silicone 500 is to reduce the thermal contact resistance generated between the heat source surface and the heat spreader contact surface.
Specifically, one side of the main body 210, which faces away from the output shaft 220, is provided with a positioning column (not identified), and the heat-conducting silica gel 500 is provided with a positioning hole matched with the positioning column, so that the heat-conducting silica gel 500 is convenient to install and position.
Referring to fig. 1 and 2, in view of the fact that air in the ventilation cavity 110 is introduced into the installation cavity 120 through the ventilation channel 130, and moisture in the air may be brought into the installation cavity 120, and the moisture enters the installation cavity 120 and then enters the motor 200, so that the service life of the motor 200 is easily shortened, in order to prevent the moisture from entering the motor 200 after passing through the ventilation channel 130 and the installation cavity 120, in some embodiments of the present invention, a partition 600 is disposed between a surface of the casing 100 facing the end cover 400 and the end cover 400, the partition 600 partitions the installation cavity 120 into an installation area 120a and an air cooling area 120b which are independent of each other, the installation area 120a is communicated with the through hole 121 and used for installing the motor 200, and the air cooling area 120b is communicated with the ventilation cavity 110 through the ventilation channel 130.
The shape of the partition 600 is various, the section of the partition 600 on the axis of the vertical through hole 121 can be arranged in a linear type, a zigzag type or a wavy type, at this time, the partition 600 crosses the installation opening to divide the installation cavity 120 into an installation area 120a and a separation area which are arranged at intervals; the section of the partition 600 on the axis of the vertical through hole 121 can also be arranged in a closed loop, at this time, the partition 600 divides the installation cavity 120 into a first area and a second area surrounding the first area, at this time, one of the first area and the second area is the installation area 120a, and the other one of the first area and the second area is a cold air area; the cross section of the partition 600 along the axis of the vertical through hole 121 may also be in an arc shape or other shapes, which are not listed here.
Specifically, one side of the partition 600 away from the ventilation cavity 110 abuts against the end cover 400, and thus, the end cover 400 can be conveniently mounted and dismounted. In addition, the side of the partition 600 away from the ventilation chamber 110 may also be fixedly connected to the end cap 400, such as by bonding, welding, etc.
Through the technical scheme, in the working process of the motor 200, heat generated by the main body 210 of the motor 200 is firstly conducted to the part, located on the mounting area 120a, of the end cover 400 and then conducted to the part, located on the air cooling area 120b, of the end cover 400, air in the ventilation cavity 110 is guided into the air cooling area 120b through the ventilation channel 130 and blown to the part, located on the air cooling area 120b, of the end cover 400, forced convection is generated with the air in the air cooling area 120b, heat exchange is carried out, and then the air flows back to the ventilation cavity 110 through the ventilation channel 130.
Referring to fig. 1 and 2, considering that moisture in the air cooling area 120b may enter the mounting area 120a through a gap between the partition 600 and the end cap 400, in some embodiments of the present invention, a partition extending toward the end cap 400 is protruded on a surface of the casing 100 facing the end cap 400 to form the partition 600, and a sealing member 700 is disposed between the partition and the end cap 400, so as to prevent the moisture in the air cooling area 120b from entering the mounting area 120a through the gap between the partition 600 and the end cap 400.
Specifically, the material of the sealing member 700 may be rubber, plastic, silicon, etc., and is not limited herein.
Note that, the shape of the cross section of the seal member 700 along the axis of the vertical through hole 121 is adapted to the shape of the cross section of the partition 600 along the axis of the vertical through hole 121, for example: the sections of the partition 600 and the seal member 700 on the axis of the vertical through hole 121 are both arranged in a straight line, and the partition 600 and the seal member 700 are both arranged across the mounting opening; for another example: the partition 600 and the sealing member 700 are provided in a closed loop in cross section along the axis of the vertical through-hole 121, and in this case, the sealing member 700 is provided around the first region in the above-described embodiment.
It is worth mentioning that the partition may be a solid plate; this baffle also can be hollow core slab, so sets up, can reduce centrifugal fan 1000's weight, and at this moment, can be that the inside cavity of baffle forms hollowly, also can be that the baffle is towards or set up to form hollowly by the concave one side of back to the end cover.
Referring to fig. 1, further, a protrusion (not shown) is disposed on a side of the partition plate facing the end cap 400, and a groove (not shown) is disposed on the sealing member 700 to match with the protrusion, so that the sealing member 700 can be conveniently mounted and fixed, and the sealing property of the connection between the sealing member 700 and the separator 600 can be enhanced. The number of the protrusions is the same as that of the grooves, and the number of the protrusions and the number of the grooves may be one or more, which is not particularly limited herein.
Preferably, the protrusion and the groove are in interference fit, so that the fixing strength of the sealing member 700 and the separator 600 can be further enhanced, and the sealing performance of the joint of the sealing member 700 and the separator 600 can be further enhanced.
Referring to fig. 1 and 4, in view of the fact that water vapor in the air in the ventilation cavity 110 can enter the installation cavity 120 through the gap between the through hole 121 and the motor 200 and then enters the motor 200 after entering the installation cavity 120, the service life of the motor 200 is easily shortened, in some embodiments of the present invention, the housing 100 is provided with the slot structure 122 surrounding the through hole 121, the slot structure 122 is located in the installation cavity 120, one axial end of the slot structure 122 is communicated with the through hole 121, and the other axial end of the slot structure 122 extends in a direction away from the through hole 121; centrifugal fan 1000 still includes sealing washer 800, sealing washer 800 includes first section 810 and second section 820, the internal diameter of second section 820 is less than the internal diameter of first section 810, first section 810 cooperates with draw-in groove structure 122, the inboard of second section 820 and the cooperation of the periphery wall of main part 210, so set up, the periphery wall through sealing washer 800 sealing connection main part 210 and the inner wall of through-hole 121, thereby can prevent the steam in the air in ventilation cavity 110 to get into in the installation cavity 120 through the clearance between through-hole 121 and the motor 200, and, combine the settlement of taking a breath passageway 130, end cover 400 and separator 600 in the above-mentioned embodiment, realized the closed waterproof processing to motor 200 promptly, realized the thermal diffusivity to motor 200 again.
The slot structure 122 may be formed by recessing the wall of the mounting cavity 120 adjacent to the ventilation cavity 110, and the slot structure 122 may also be formed by surrounding two annular plates arranged at intervals inside and outside the mounting cavity 120 on the wall of the mounting cavity 120 adjacent to the ventilation cavity 110, which is not limited herein.
Preferably, the first section 810 is in interference fit with the slot structure 122, so as to enhance the connection strength between the first section 810 and the slot structure 122.
Furthermore, when the through hole 121 is engaged with the output shaft 220, by providing a seal ring between the through hole 121 and the output shaft 220, it is possible to prevent moisture in the air in the ventilation chamber 110 from entering the mounting chamber 120 through a gap between the through hole 121 and the output shaft 220.
Referring to fig. 1 and 4, in order to enhance the sealing performance between the sealing ring 800 and the main body 210, in some embodiments of the present invention, a filling groove 821 extending along the circumferential direction is recessed inside the second section 820, a filling port 822 communicating with the filling groove 821 is disposed on a side of the second section 820 close to or far from the impeller 300, and the filling groove 821 is used for filling waterproof grease.
Specifically, a filling port 822 communicated with the filling groove 821 is disposed on a side of the second section 820 away from the impeller 300, so that waterproof grease can be conveniently filled into the filling groove 821 through the filling port 822.
Referring to fig. 1 and 4, considering that the forming of the filling port 822 will affect the processing ease of the sealing ring 800, in view of the convenience of processing and forming the first sealing ring 800, in some embodiments of the present invention, the filling port 822 extends along the circumferential direction of the sealing ring 800 to be annular, and the filling port 822 further penetrates through the inner side of the sealing ring 800, so that the processing and forming of the first sealing ring 800 by a mold is facilitated. Further, the fill port 822 may also be a porous structure.
The utility model also proposes a machine arrangement (not shown) comprising a machine body (not shown) and a centrifugal fan 1000 as described above.
The specific structure of the centrifugal fan 1000 refers to the above embodiments, and since the machine equipment adopts all technical solutions of all the above embodiments, at least all the beneficial effects brought by the technical solutions of the above embodiments are achieved, and no further description is given here.
By way of example and not limitation, the machine apparatus may be a cleaning machine that may include at least one of: the floor cleaning robot comprises a floor sweeping robot, a floor sweeping and mopping integrated robot, a floor wiping robot, a handheld dust collector, a hand-push cleaning machine, a driving type cleaning machine and a cleaning base station.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (11)
1. A centrifugal fan is characterized by comprising a shell, an impeller and a motor; wherein the content of the first and second substances,
the shell is provided with a ventilation cavity and an installation cavity, the shell is provided with an air inlet and an air outlet, the air inlet and the air outlet are both communicated with the ventilation cavity, the shell is also provided with a through hole, and the through hole is communicated with the ventilation cavity and the installation cavity;
the motor comprises a main body and an output shaft, the main body is arranged in the mounting cavity, and one end of the output shaft extends into the ventilation cavity through the through hole;
the impeller and one end of the output shaft, which extends into the ventilation cavity, are fixedly connected so as to be rotatably arranged in the ventilation cavity;
the installation cavity with still communicate through the passageway of taking a breath between the ventilation cavity, the passageway of taking a breath supplies air in the ventilation cavity with the air in the installation cavity is replaced.
2. The centrifugal fan of claim 1 wherein the housing defines a breather window, the breather window communicating with a side of the mounting cavity adjacent the breather chamber, the breather window defining the breather passage.
3. The centrifugal fan according to claim 2, wherein the two opposite sides of the ventilation window are connected by a reinforcing rib.
4. The centrifugal fan of claim 1, further comprising an end cap made of a thermally conductive material, the end cap abutting a side of the body away from the through hole.
5. The centrifugal fan of claim 4, wherein a thermally conductive silica gel is disposed between the body and the end cap.
6. The centrifugal fan as claimed in claim 4, wherein a partition is disposed between a surface of the casing facing the end cover and the end cover, the partition dividing the installation cavity into an installation region and an air cooling region which are independent of each other, the installation region is communicated with the through hole and used for installing the motor, and the air cooling region is communicated with the ventilation cavity through the ventilation channel.
7. The centrifugal fan as claimed in claim 6, wherein a partition extending toward the end cap is protruded from a surface of the housing facing the end cap to form the partition, and a seal is provided between the partition and the end cap.
8. The centrifugal fan as claimed in claim 7, wherein a side of the baffle facing the end cap is provided with a protrusion, and the sealing member is provided with a groove engaged with the protrusion.
9. The centrifugal fan according to any one of claims 1 to 8, wherein the housing is provided with a slot structure surrounding the through hole, the slot structure being located in the mounting cavity, one axial end of the slot structure communicating with the through hole, and the other axial end of the slot structure extending away from the through hole;
centrifugal fan still includes the sealing washer, the sealing washer includes first section and second section, the internal diameter of second section is less than the internal diameter of first section, first section with the draw-in groove structure cooperation, the inboard of second section with the periphery wall cooperation of main part.
10. The centrifugal fan according to claim 9, wherein the second section has a filling groove recessed therein and extending in a circumferential direction thereof, and a side of the second section close to or away from the impeller has a filling port communicating with the filling groove, and the filling groove is filled with a waterproof grease.
11. A machine arrangement, characterized in that the machine arrangement comprises a machine body and a centrifugal fan according to any one of claims 1-10.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121339596.XU CN215860845U (en) | 2021-06-16 | 2021-06-16 | Centrifugal fan and machine equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121339596.XU CN215860845U (en) | 2021-06-16 | 2021-06-16 | Centrifugal fan and machine equipment |
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| CN215860845U true CN215860845U (en) | 2022-02-18 |
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| CN202121339596.XU Active CN215860845U (en) | 2021-06-16 | 2021-06-16 | Centrifugal fan and machine equipment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118019271A (en) * | 2024-04-09 | 2024-05-10 | 英飞同仁(江苏)风机有限公司 | Reinforcing radiating EC fan electron device protecting cover |
| CN118019271B (en) * | 2024-04-09 | 2024-06-21 | 英飞同仁(江苏)风机有限公司 | Reinforcing radiating EC fan electron device protecting cover |
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2021
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118019271A (en) * | 2024-04-09 | 2024-05-10 | 英飞同仁(江苏)风机有限公司 | Reinforcing radiating EC fan electron device protecting cover |
| CN118019271B (en) * | 2024-04-09 | 2024-06-21 | 英飞同仁(江苏)风机有限公司 | Reinforcing radiating EC fan electron device protecting cover |
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Address after: 518110 1701, building 2, Yinxing Zhijie, No. 1301-72, sightseeing Road, Xinlan community, Guanlan street, Longhua District, Shenzhen, Guangdong Province Patentee after: Shenzhen Yinxing Intelligent Group Co.,Ltd. Address before: 518110 Building A1, Yinxing Hi-tech Industrial Park, Guanlan Street Sightseeing Road, Longhua District, Shenzhen City, Guangdong Province Patentee before: Shenzhen Silver Star Intelligent Technology Co.,Ltd. |
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