CN116136222A

CN116136222A - Fan, fresh air system and air conditioner

Info

Publication number: CN116136222A
Application number: CN202310240237.6A
Authority: CN
Inventors: 胡慧冬; 蒋婷婷; 罗常; 方佳旗; 郑礼成; 吴迪
Original assignee: Guangdong Welling Motor Manufacturing Co Ltd; Welling Wuhu Motor Manufacturing Co Ltd
Current assignee: Guangdong Welling Motor Manufacturing Co Ltd; Welling Wuhu Motor Manufacturing Co Ltd
Priority date: 2023-03-14
Filing date: 2023-03-14
Publication date: 2023-05-19

Abstract

The invention provides a fan, a fresh air system and an air conditioner. The fan comprises a fan body and a first shell; the fan body is provided with a first air inlet, and air can enter the fan body through the first air inlet; the first shell is connected with the fan body, a flow channel is arranged around the fan body, and the flow channel is communicated with the first air inlet; the first shell is provided with a second air inlet, the second air inlet is connected with the flow channel, and the width of the flow channel is reduced from one side close to the second air inlet to one side close to the first air inlet.

Description

Fan, fresh air system and air conditioner

Technical Field

The invention relates to the technical field of fans, in particular to a fan, a fresh air system and an air conditioner.

Background

At present, an air conditioner with a fresh air function is provided with a fresh air system, and the fresh air system is used for conveying outdoor air into a room through a pipeline, so that the effect of refreshing the air is achieved.

In the related art, a flow channel is arranged on a fresh air system, and outdoor air can enter the flow channel from one end of the flow channel and enter a fan from the other end of the flow channel through the flow channel, so that the outdoor air is conveyed indoors. However, the air is easy to generate vortex when flowing in the flow channel, so that the flow of the air is reduced, and the ventilation effect of the fresh air system is affected.

Disclosure of Invention

The present invention aims to solve at least one of the technical problems existing in the prior art or related art.

To this end, a first aspect of the invention proposes a fan.

A second aspect of the present invention provides a fresh air system.

A third aspect of the present invention provides an air conditioner.

In view of the above, a first aspect of the present invention provides a fan, including a fan body and a first housing; the fan body is provided with a first air inlet, and air can enter the fan body through the first air inlet; the first shell is connected with the fan body, a flow channel is arranged around the fan body, and the flow channel is communicated with the first air inlet; the first shell is provided with a second air inlet, the second air inlet is connected with the flow channel, and the width of the flow channel is reduced from one side close to the second air inlet to one side close to the first air inlet.

The utility model provides a fan, including fan body and first casing, first casing and fan body coupling, enclose with the fan body and establish out the runner, the fan body is provided with first air inlet, first casing is provided with the second air inlet, first air inlet and second air inlet all communicate with the runner, after the fan body begins the work, the fan body can inhale the inside of fan body with the gas in the runner through first air inlet, after the runner internal pressure reduces, can inhale the runner with the outside gas of fan through the second air inlet, for example with outdoor air suction runner, and send into indoor through the fan, and then realize gaseous transport. Because the width of runner reduces by being close to one side that the second air inlet is close to one side of first air inlet, and then makes the gas in the runner when flowing, the inner wall of runner can lead gas, reduces the resistance of runner to gas, and then reduces the probability that produces the vortex in the runner, promotes the flow of gas in the runner, promotes fresh air system's ventilation effect.

Specifically, the width of the flow channel is reduced from one side close to the second air inlet to one side close to the first air inlet, so that the cross section of the flow channel forms a structure similar to a triangle, the width of the flow channel at the first air inlet is smaller due to the triangular structure of the flow channel, excessive corners are not generated in the circumferential direction of the first air inlet, the probability of generating vortex at the corners of the flow channel by gas is reduced, and the flow rate of the gas in the flow channel is effectively improved.

Further, the fresh air system further comprises a pipeline, the first end of the pipeline is connected with the second air inlet, and the second end of the pipeline extends to the outside of the room, so that outdoor air can enter the flow channel.

Further, the external shape of the first housing is adapted to the shape of the flow channel, that is, the first housing is a housing with uniform thickness, and the width of the external shape of the first housing is reduced from a side close to the second air inlet to a side close to the first air inlet.

Further, the fan also comprises a rotating shaft, the rotating shaft can be electrolyzed with the driving motor, and the impeller is arranged on the rotating shaft, so that the impeller can be driven to rotate in the volute by the driving motor.

Further, the space inside the first housing satisfies the screen installation.

Specifically, the direction in which the gas flows from the second inlet to the first inlet is a first direction, the width of the flow passage means the dimension of the flow passage in a second direction, the second direction is perpendicular to the axial direction of the blower, and the second direction is perpendicular to the first direction.

The utility model provides a fan, emulation analysis, under equal size scope and emulation setting, the flow of the fan that this application provided promotes 7.5% amount of wind than the fan of square casing, can effectively reduce diffusion device afterbody separation, improves the leaf way vortex to effectively reduce flow loss, reduce pneumatic noise.

In addition, the fan in the technical scheme provided by the invention can also have the following additional technical characteristics:

in one aspect of the invention, the first housing includes a side wall, a transition portion, and a top wall; the first side of the side wall is connected with the fan body; the first side of the transition part is connected with the second side of the side wall; the top wall is connected to the second side of the transition portion.

In this technical scheme, first casing includes lateral wall, transition portion and roof, and the lateral wall is connected with the fan body, and the roof passes through transition portion and is connected with the lateral wall, and the runner is enclosed to the surface that roof, transition portion, lateral wall and fan body and lateral wall are connected. The transition part is arranged between the side wall and the top wall, so that the transition between the side wall and the top wall is smoother, the corner between the top wall and the side wall of the first shell is reduced, the probability of forming vortex at the corner between the top wall and the side wall of the first shell is reduced, and the flow of gas in the flow channel is further improved.

In one aspect of the present invention, the transition portion extends in an arc shape from the first side to the second side, and a radius of the transition portion is 20 mm or more and 40 mm or less.

In the technical scheme, the transition part extends in an arc shape from the first side to the second side, so that the transition part can guide the flow of gas along the axial direction of the fan, the probability of generating vortex in the flow passage is further reduced, and the flow in the flow passage is further improved. And by adjusting the radius of the transition part, the flow guiding effect of the transition part is improved, and the sectional area of the first cavity in the second direction is adjusted. The radius of the transition part is set to be 20-40 mm, so that the transition part can guide gas more effectively, and the transition part can be prevented from occupying too much space of the side wall and the top wall, so that the flow channel has a certain sectional area in the second direction, and the influence on the flow rate of the gas in the flow channel due to the too small sectional area of the flow channel is avoided.

Specifically, the transition part extends in an arc shape from the first side to the second side, so that the flow direction of air is converted from flowing along the surface of the fan body to flowing along the axial direction of the fan, flow separation is effectively improved, fluid performance is improved, and the air quantity of a system is increased.

In particular, the radius of the transition may be 20 millimeters.

The radius of the transition may also be 30 mm.

The radius of the transition may also be 32.5 mm.

The radius of the transition may also be 40 mm.

In one embodiment of the present invention, a side of the sidewall adjacent to the first air inlet extends in an arc shape, and a radius of the side of the sidewall adjacent to the first air inlet is greater than or equal to 40 mm and less than or equal to 80 mm.

In this technical scheme, the side that the lateral wall is close to first air inlet is the arcuation and extends for the lateral wall is close to one side of first air inlet and can lead the flow of gas better, further reduces the probability that produces the vortex in the runner, and then promotes the flow in the runner. And the radius of one side of the side wall close to the first air inlet is adjusted, so that the diversion effect of one side of the side wall close to the first air inlet is improved. The radius of one side of the side wall close to the first air inlet is set to be 40-80 mm, so that the side wall close to the first air inlet can guide gas more effectively, interference between one side of the side wall close to the first air inlet and the first air inlet can be avoided, the flow guiding effect of one side of the side wall close to the first air inlet is improved, and the gas in the flow channel can be ensured to enter the fan body from the first air inlet more smoothly.

In particular, the radius of the side wall adjacent to the first air inlet may be 40 mm.

The radius of the side wall on the side adjacent the first air inlet may also be 52.5 mm.

The radius of the side wall on the side adjacent to the first air inlet may also be 60 mm.

The radius of the side wall on the side adjacent to the first air inlet may also be 80 mm.

In one aspect of the present invention, an angle between the intake direction of the second intake port and the center line of the first housing is 0 degrees or more and 90 degrees or less.

In the technical scheme, the second air inlet and the gas fluidity in the flow channel are adjusted by adjusting the included angle between the air inlet direction of the second air inlet and the central line of the first shell. And the included angle between the air inlet direction of the second air inlet and the central line of the first shell is set to be 0-90 degrees, so that an excessive included angle between the air inlet direction of the second air inlet and the flowing direction of the air in the flow channel can not exist, the air can pass through the second air inlet and the flow channel more smoothly, the flow in the flow channel is further improved, and the probability of vortex occurrence in the flow channel is reduced.

Specifically, the center line is the center line of the shell in the flowing direction of the gas in the flow channel, and an included angle between the part of the center line, which is positioned on the first side of the second gas inlet, and the gas inlet direction of the second gas inlet is 0-90 degrees. The included angle between the part of the central line positioned on the second side of the second air inlet and the air inlet direction of the second air inlet is 90-180 degrees.

The first side of the second air inlet is the side of the second air inlet away from the first air inlet.

The second side of the second air inlet is the side of the second air inlet close to the first air inlet, namely, the part of the center line on the second side of the second air inlet is the part of the center line between the first air inlet and the second air inlet.

Specifically, the included angle between the air inlet direction of the second air inlet and the center line of the first housing may be 0 degrees.

The included angle between the air inlet direction of the second air inlet and the central line of the first shell can be 45 degrees.

The included angle between the air inlet direction of the second air inlet and the central line of the first shell can be 90 degrees.

In one technical scheme of the invention, the fan body comprises a second shell, a volute and an impeller, wherein a first side of the second shell is connected with the first shell; the volute is connected with the second shell, is positioned at the second side of the second shell and is enclosed with the second shell to form a mounting cavity; the impeller is disposed within the mounting cavity.

In this technical scheme, fan body includes second casing, volute and impeller second casing and volute enclose and establish out the installation cavity, and the impeller is located the installation cavity, and when clicking the drive impeller and rotating, the impeller can drive gas flow, and then realizes the air supply.

Further, the impeller is a centrifugal impeller.

In one aspect of the present invention, the second housing is provided with a first air inlet through which the flow passage communicates with the installation cavity.

In this technical scheme, the runner communicates with the installation cavity through the first air inlet that sets up on the second casing, and then makes the gas in the runner enter into the installation cavity more smoothly to be convenient for carry gas through the cooperation of impeller and volute.

In one technical scheme of the invention, the fan body further comprises a flow collecting part which is annularly arranged along the circumferential direction of the first air inlet, is connected with the second shell and extends in an arc shape along the axial direction of the impeller into the mounting cavity.

In this technical scheme, the fan body still includes the mass flow part, and the mass flow part sets up in first air inlet department to be the arcuation along the axial of impeller to the installation intracavity and extend, make the mass flow part can lead the gas through first air inlet, make gas can move to impeller department after passing through first air inlet, reduce the probability that gas enters into the clearance between impeller and the second casing after passing through first air inlet, and then promote the efficiency of impeller, further promote the flow of fan.

In one aspect of the present invention, the height of the flow collecting member in the axial direction of the impeller is greater than 0 and equal to or less than 6 mm.

In the technical scheme, the flow guiding effect of the flow collecting part is adjusted by adjusting the height of the flow collecting part in the axial direction of the impeller. The height of the current collecting part in the axial direction of the impeller is set to be 0-6 mm, so that the current guiding effect of the chicken fillet part can be further improved while interference between the current collecting part and the impeller is avoided.

Specifically, the height of the collecting member in the axial direction of the impeller may be 2 mm.

The height of the collecting member in the axial direction of the impeller may also be 4 mm.

The height of the collecting member in the axial direction of the impeller may also be 6 mm.

In one technical scheme of the invention, the angle of the inlet angle of the blade of the impeller is more than or equal to 50 degrees and less than or equal to 90 degrees.

In the technical scheme, the adjustment of the impeller driving gas capacity is realized by adjusting the angle of the inlet angle of the blades of the impeller. And the inlet angle of the blades of the impeller is set to be 50-90 degrees, so that the flow of the fan is improved, and the ventilation rate of the fresh air system is further improved.

Specifically, the angle of entry angle of the blades of the impeller may be 50 degrees.

The angle of entry of the blades of the impeller may also be 80 degrees.

The angle of entry angle of the blades of the impeller may also be 90 degrees.

Specifically, the inlet angle of a blade of the impeller is the angle between the tangential direction of the circle on the side of the blade that is closer to the impeller axis and the side of the blade that is closer to the impeller axis.

In one aspect of the present invention, the angle of the outlet angle of the vane of the impeller is 150 degrees or more and 170 degrees or less.

In the technical scheme, the adjustment of the impeller driving gas capacity is realized by adjusting the angle of the outlet angle of the blades of the impeller. And the angle of the outlet angle of the blade of the impeller is set to be 150-170 degrees, so that the flow of the fan is improved, and the ventilation rate of the fresh air system is further improved.

Specifically, the angle of the outlet angle of the blades of the impeller may be 150 degrees.

The angle of the exit angle of the blades of the impeller may also be 160 degrees.

The angle of the exit angle of the blades of the impeller may also be 170 degrees.

Specifically, the outlet angle of a blade of the impeller is the angle between the tangent of the circle at which the side of the blade that is away from the impeller axis and the side of the blade that is away from the impeller axis.

In one technical scheme of the invention, the volute is provided with an air outlet, and the fan body further comprises a first grid and a second grid. The first grille is connected with the volute and is positioned at the air outlet; the second grille is connected with the second shell and is positioned at the first air inlet.

In this technical scheme, first grid is connected with the volute, is located gas outlet department, and the second grid is connected with the second casing, is located first air inlet department, and accessible first grid and second grid are adjusted the air current of air inlet and gas outlet department, and then reduce the air current noise of air inlet and gas outlet department. And through setting up first grid at the gas outlet, set up the second grid at the air inlet, still can avoid debris to enter into the fan body by air inlet and/or gas outlet department, and then ensure the stability of impeller in the course of the work.

In one aspect of the present invention, the height of the first housing in the axial direction of the fan body is 40 mm or more and 80 mm or less.

In this technical scheme, the first casing is 40 millimeters to 80 millimeters in the axial of fan body highly, when promoting the amount of wind of runner, reduces the volume of fan, promotes the stability of fan in the course of the work.

Specifically, the height of the first housing in the axial direction of the blower body may be 40 millimeters.

The height of the first housing in the axial direction of the blower body may also be 60 mm.

The first housing may also have a height of 80 millimeters in the axial direction of the fan body.

The second aspect of the invention provides a fresh air system comprising a fan according to any of the above-described aspects, so that the fresh air system comprises all the beneficial effects of the fan according to any of the above-described aspects.

The third aspect of the invention provides an air conditioner, which comprises the fan according to any one of the above technical schemes or the fresh air system according to any one of the above technical schemes, so that the air conditioner has all the beneficial effects of the fan according to any one of the above technical schemes or the fresh air system according to any one of the above technical schemes.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Drawings

The foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

FIG. 1 illustrates one of the schematic diagrams of a blower according to one embodiment of the invention;

FIG. 2 illustrates an exploded view of a blower according to one embodiment of the invention;

FIG. 3 shows one of the schematic views of the first housing according to one embodiment of the invention;

FIG. 4 shows a second schematic view of a first housing according to one embodiment of the invention;

FIG. 5 illustrates a second schematic diagram of a blower in accordance with an embodiment of the invention;

FIG. 6 shows a third schematic view of the first housing according to one embodiment of the invention;

FIG. 7 shows a schematic view of a second housing according to an embodiment of the invention;

FIG. 8 illustrates a schematic view of a blower body according to one embodiment of the invention;

fig. 9 shows a schematic view of an impeller according to an embodiment of the invention.

Wherein, the correspondence between the reference numerals and the component names in fig. 1 to 9 is:

100 fan body, 110 first inlet, 120 second casing, 130 volute, 140 mounting cavity, 150 impeller, 160 collector component, 170 first grille, 180 second grille, 200 first casing, 210 second inlet, 220 side wall, 230 transition, 240 top wall.

Detailed Description

In order that the above-recited objects, features and advantages of the present invention will be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments may be combined with each other.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those described herein, and therefore the scope of the present invention is not limited to the specific embodiments disclosed below.

A fan, a fresh air system, and an air conditioner according to some embodiments of the present invention are described below with reference to fig. 1 to 9.

In one embodiment of the present invention, as shown in fig. 1 and 2, there is provided a blower including a blower body 100 and a first housing 200; the fan body 100 is provided with a first air inlet 110, and air can enter the fan body 100 through the first air inlet 110; the first shell 200 is connected with the fan body 100, and encloses an outlet flow passage with the fan body 100, and the flow passage is communicated with the first air inlet 110; wherein the first housing 200 is provided with a second air inlet 210, the second air inlet 210 is connected with a flow passage, and the width of the flow passage is reduced from a side near the second air inlet 210 to a side near the first air inlet 110.

In this embodiment, the fan includes a fan body 100 and a first housing 200, the first housing 200 is connected with the fan body 100, and encloses a flow channel with the fan body 100, the fan body 100 is provided with a first air inlet 110, the first housing 200 is provided with a second air inlet 210, both the first air inlet 110 and the second air inlet 210 are communicated with the flow channel, after the fan body 100 starts to work, the fan body 100 can suck the air in the flow channel into the fan body 100 through the first air inlet 110, after the pressure in the flow channel is reduced, the air outside the fan can be sucked into the flow channel through the second air inlet 210, for example, the air outside the fan is sucked into the flow channel, and the air is sent into a room through the fan, thereby realizing the conveying of the air. Because the width of the runner is reduced from the side close to the second air inlet 210 to the side close to the first air inlet 110, when the gas in the runner flows, the inner wall of the runner can guide the gas, so that the resistance of the runner to the gas is reduced, the probability of generating vortex in the runner is further reduced, the flow of the gas in the runner is improved, and the ventilation effect of the fresh air system is improved.

Specifically, the width of the flow channel is reduced from the side close to the second air inlet 210 to the side close to the first air inlet 110, so that the cross section of the flow channel forms a triangle-like structure, the width of the flow channel at the first air inlet 110 is smaller due to the triangular structure of the flow channel, so that excessive corners are not generated in the circumferential direction of the first air inlet 110, the probability of generating vortex at the corners of the flow channel by the gas is reduced, and the flow rate of the gas in the flow channel is effectively improved.

Further, the fresh air system further includes a pipeline, a first end of the pipeline is connected to the second air inlet 210, and a second end of the pipeline extends to the outside, so that the outdoor air can enter the flow channel.

Further, the outer shape of the first housing 200 is adapted to the shape of the flow channel, i.e., the first housing 200 is a housing having a uniform thickness, and the width of the outer shape of the first housing 200 is reduced from the side near the second air inlet 210 to the side near the first air inlet 110.

Further, the fan further includes a rotating shaft, which can be electrolyzed with the driving motor, and the impeller 150 is disposed on the rotating shaft, so that the impeller 150 can be driven by the driving motor to rotate in the scroll 130.

Further, the first housing 200 has an internal space for the filter screen installation.

Specifically, the direction in which the gas flows from the second gas inlet 210 to the first gas inlet 110 is a first direction X, the width of the flow channel refers to the dimension of the flow channel in a second direction Y, the second direction Y is perpendicular to the axial direction of the blower, and the second direction Y is perpendicular to the first direction X.

As shown in fig. 4, the width of the flow channel decreases from the side near the second air inlet 210 to the side near the first air inlet 110, or from the point a to the point B.

The present embodiment provides a blower, and further includes the following technical features in addition to the technical features of the above embodiment.

As shown in fig. 3, the first housing 200 includes a side wall 220, a transition 230, and a top wall 240; a first side of the sidewall 220 is connected to the blower body 100; a first side of the transition 230 is connected to a second side of the sidewall 220; the top wall 240 is connected to a second side of the transition 230.

In this embodiment, the first housing 200 includes a side wall 220, a transition portion 230, and a top wall 240, the side wall 220 is connected to the fan body 100, the top wall 240 is connected to the side wall 220 through the transition portion 230, and the top wall 240, the transition portion 230, the side wall 220, and the surface of the fan body 100 connected to the side wall 220 enclose a flow path. The transition part 230 is arranged between the side wall 220 and the top wall 240, so that the transition between the side wall 220 and the top wall 240 is smoother, the corner between the top wall 240 and the side wall 220 of the first shell 200 is further reduced, the probability of forming vortex at the corner between the top wall 240 and the side wall 220 of the first shell 200 is reduced, and the flow rate of gas in the flow channel is further improved.

As shown in fig. 3, the transition portion 230 extends from the first side to the second side in an arc shape, and a radius R1 of the transition portion 230 is greater than or equal to 20 mm and less than or equal to 40 mm.

In this embodiment, the transition portion 230 extends from the first side to the second side in an arc shape, so that the transition portion 230 can guide the flow of the gas along the axial direction of the fan, further reduce the probability of generating vortex in the flow channel, and further improve the flow rate in the flow channel. And by adjusting the radius R1 of the transition portion 230, the flow guiding effect of the transition portion 230 is improved and the cross-sectional area of the first cavity in the second direction Y is adjusted. By setting the radius R1 of the transition portion 230 to 20 mm to 40 mm, the transition portion 230 can guide the gas more effectively, and also can avoid the transition portion 230 occupying too much space of the side wall 220 and the top wall 240, so that the flow channel has a certain cross-sectional area in the second direction Y, and further avoid affecting the flow of the gas in the flow channel due to too small cross-sectional area of the flow channel.

Specifically, the transition portion 230 extends from the first side to the second side in an arc shape, so that the flow direction of the air is converted from flowing along the surface of the fan body 100 to flowing along the axial direction of the fan, which effectively improves the flow separation, thereby improving the fluid performance and increasing the system air volume.

Specifically, the radius R1 of the transition 230 may be 20 millimeters.

The radius R1 of the transition 230 may also be 30 millimeters.

The radius R1 of the transition 230 may also be 32.5 millimeters.

The radius R1 of the transition 230 may also be 40 millimeters.

As shown in fig. 4, a side of the sidewall 220 adjacent to the first air inlet 110 extends in an arc shape, and a radius R2 of the side of the sidewall 220 adjacent to the first air inlet 110 is greater than or equal to 40 mm and less than or equal to 80 mm.

In this embodiment, the side wall 220 near the first air inlet 110 extends in an arc shape, so that the side wall 220 near the first air inlet 110 can better guide the flow of the gas, further reduce the probability of generating vortex in the flow channel, and further improve the flow rate in the flow channel. And by adjusting the radius R2 of the side wall 220 near the first air inlet 110, the flow guiding effect of the side wall 220 near the first air inlet 110 is improved. By setting the radius R2 of the side wall 220 near the first air inlet 110 to be 40 mm to 80 mm, the side wall 220 near the first air inlet 110 can guide the air more effectively, and interference between the side wall 220 near the first air inlet 110 and the first air inlet 110 can be avoided, so that the air in the flow channel can be ensured to enter the fan body 100 from the first air inlet 110 more smoothly while improving the flow guiding effect of the side wall 220 near the first air inlet 110.

Specifically, the radius R2 of the side wall 220 on the side near the first air inlet 110 may be 40 mm.

The radius R2 of the side wall 220 on the side adjacent to the first air inlet 110 may also be 52.5 mm.

The radius R2 of the side wall 220 on the side near the first air inlet 110 may also be 60 mm.

The radius R2 of the side wall 220 on the side adjacent to the first air inlet 110 may also be 80 mm.

As shown in fig. 4, the angle a1 between the intake direction of the second intake port 210 and the center line of the first housing 200 is 0 degrees or more and 90 degrees or less.

In this embodiment, the adjustment of the fluidity of the gas in the flow passage and the second gas inlet 210 is achieved by adjusting the angle between the inlet direction of the second gas inlet 210 and the center line of the first housing 200. And the included angle a1 between the air inlet direction of the second air inlet 210 and the center line of the first housing 200 is set to 0 to 90 degrees, so that an excessive included angle between the air inlet direction of the second air inlet 210 and the flowing direction of the gas in the flow channel does not exist, and the gas is smoother when passing through the second air inlet 210 and the flow channel, so that the flow rate in the flow channel is further improved, and the probability of vortex occurrence in the flow channel is reduced.

Specifically, the center line is the center line of the housing in the flow direction of the gas in the flow channel, and the included angle a1 between the portion of the center line located on the first side of the second gas inlet 210 and the gas inlet direction of the second gas inlet 210 is 0 to 90 degrees. The angle between the portion of the center line located at the second side of the second air inlet 210 and the air inlet direction of the second air inlet 210 is 90 degrees to 180 degrees.

The first side of the second air inlet 210 is a side of the second air inlet 210 remote from the first air inlet 110.

The second side of the second air inlet 210 is a side of the second air inlet 210 adjacent to the first air inlet 110, i.e., a portion of the center line located on the second side of the second air inlet 210 is a portion of the center line located between the first air inlet 110 and the second air inlet 210.

Specifically, as shown in fig. 5 and 6, an included angle a1 between the intake direction of the second intake port 210 and the center line of the first housing 200 may be 0 degrees, that is, the second intake port 210 is arranged along the first direction X.

The included angle a1 between the intake direction of the second intake port 210 and the center line of the first housing 200 may also be 45 degrees.

As shown in fig. 4, the included angle a1 between the intake direction of the second intake port 210 and the center line of the first housing 200 may also be 90 degrees, i.e., the second intake port 210 is arranged along the second direction Y.

As shown in fig. 2, the fan body 100 includes a second housing 120, a scroll 130, and an impeller 150, a first side of the second housing 120 being connected with the first housing 200; the volute 130 is connected with the second shell 120, is positioned on the second side of the second shell 120, and encloses an installation cavity 140 with the second shell 120; the impeller 150 is disposed within the mounting cavity 140.

In this embodiment, the fan body 100 includes a second housing 120, a volute 130, and an impeller 150, where the second housing 120 and the volute 130 enclose a mounting cavity 140, the impeller 150 is located in the mounting cavity 140, and when the impeller 150 is driven to rotate by clicking, the impeller 150 can drive gas to flow, so as to realize air supply.

Further, the impeller 150 is a centrifugal impeller.

As shown in fig. 2, the second housing 120 is provided with a first air inlet 110, and the flow passage communicates with the mounting chamber 140 through the first air inlet 110.

In this embodiment, the flow passage communicates with the installation cavity 140 through the first air inlet 110 provided on the second housing 120, so that the air in the flow passage can more smoothly enter the installation cavity 140, so that the air is conveniently conveyed through the cooperation of the impeller 150 and the scroll 130.

As shown in fig. 7 and 8, the fan body 100 further includes a collecting member 160, and the collecting member 160 is annularly disposed along the circumferential direction of the first air inlet 110, is connected to the second casing 120, and extends in an arc shape into the mounting chamber 140 along the axial direction of the impeller 150.

In this embodiment, the fan body 100 further includes a collecting component 160, where the collecting component 160 is disposed at the first air inlet 110 and extends in an arc shape along the axial direction of the impeller 150 into the mounting cavity 140, so that the collecting component 160 can guide the air passing through the first air inlet 110, so that the air can move to the impeller 150 after passing through the first air inlet 110, the probability that the air enters the gap between the impeller 150 and the second casing 120 after passing through the first air inlet 110 is reduced, and further the efficiency of the impeller 150 is improved, and the flow rate of the fan is further improved.

The height of the collecting member 160 in the axial direction of the impeller 150 is greater than 0 and less than or equal to 6 mm.

In this embodiment, the adjustment of the flow guiding effect of the flow collecting member 160 is achieved by the adjustment of the height of the flow collecting member 160 in the axial direction of the impeller 150. And the height of the current collecting part 160 in the axial direction of the impeller 150 is set to 0 to 6 mm, so that the current guiding effect of the chicken fillet part can be further improved while interference between the current collecting part 160 and the impeller 150 is avoided.

Specifically, the height of the collecting member 160 in the axial direction of the impeller 150 may be 2 mm.

The height of the collecting member 160 in the axial direction of the impeller 150 may also be 4 mm.

The height of the collecting member 160 in the axial direction of the impeller 150 may also be 6 mm.

As shown in fig. 9, the angle of the inlet angle β2 of the vane of the impeller 150 is 50 degrees or more and 90 degrees or less.

In this embodiment, the adjustment of the ability of the impeller 150 to drive gas is achieved by adjusting the angle of the inlet angle of the blades of the impeller 150. And by setting the inlet angle beta 2 of the blades of the impeller 150 to be 50-90 degrees, the flow of the fan is improved, and the ventilation rate of the fresh air system is further improved.

Specifically, the angle of entry angle β2 of the blades of impeller 150 may be 50 degrees.

The angle of entry angle β2 of the blades of impeller 150 may also be 80 degrees.

The angle of entry angle β2 of the blades of impeller 150 may also be 90 degrees.

Specifically, the inlet angle of the blades of the impeller 150 is the angle between the side of the blades near the axis of the impeller 150 and the tangent to the circle on which the side of the blades near the axis of the impeller 150 is located.

As shown in fig. 9, the angle of the outlet angle β1 of the vane of the impeller 150 is 150 degrees or more and 170 degrees or less.

In this embodiment, the adjustment of the impeller 150's ability to drive gas is achieved by adjusting the angle of the outlet angle β1 of the impeller 150's blades. And the angle of the outlet angle beta 1 of the blade of the impeller 150 is set to 150-170 degrees, so that the flow of the fan is improved, and the ventilation rate of the fresh air system is further improved.

Specifically, the angle of the outlet angle β1 of the blades of the impeller 150 may be 150 degrees.

The angle of the outlet angle β1 of the blades of the impeller 150 may also be 160 degrees.

The angle of the outlet angle β1 of the blades of the impeller 150 may also be 170 degrees.

Specifically, the outlet angle of the blades of the impeller 150 is the angle between the side of the blades away from the axis of the impeller 150 and the tangent to the circle on which the side of the blades away from the axis of the impeller 150 is located.

As shown in fig. 8, the scroll 130 is provided with an air outlet, and the fan body 100 further includes a first grill 170 and a second grill 180. The first grille 170 is connected with the scroll 130 and is positioned at the air outlet; the second grill 180 is coupled to the second housing 120 at the first air inlet 110.

In this embodiment, the first grille 170 is connected to the scroll 130 at the air outlet, the second grille 180 is connected to the second housing 120 at the first air inlet 110, and the air flow at the air inlet and the air outlet can be adjusted by the first grille 170 and the second grille 180, thereby reducing the air flow noise at the air inlet and the air outlet. And by arranging the first grille 170 at the air outlet and arranging the second grille 180 at the air inlet, sundries can be prevented from entering the fan body 100 from the air inlet and/or the air outlet, and the stability of the impeller 150 in the working process is further ensured.

As shown in fig. 3, the height H1 of the first housing 200 in the axial direction of the fan body 100 is 40 mm or more and 80 mm or less.

In this embodiment, the height H1 of the first housing 200 in the axial direction of the fan body 100 is 40 to 80 mm, and the volume of the fan is reduced while the air volume of the flow passage is increased, thereby improving the stability of the fan during operation.

Specifically, the height H1 of the first housing 200 in the axial direction of the blower body 100 may be 40 millimeters.

The height H1 of the first housing 200 in the axial direction of the blower body 100 may also be 60 millimeters.

The height H1 of the first housing 200 in the axial direction of the blower body 100 may also be 80 millimeters.

In one embodiment of the present invention, a fresh air system is provided that includes a blower as in any of the embodiments described above, and therefore includes all of the benefits of a blower as in any of the embodiments described above.

In one embodiment of the present invention, an air conditioner is provided, which includes the blower of any one of the embodiments described above or the fresh air system of any one of the embodiments described above, so that the air conditioner has all the advantages of the blower of any one of the embodiments described above or the fresh air system of any one of the embodiments described above.

In the claims, specification and drawings of the present invention, the term "plurality" means two or more, unless explicitly defined otherwise, the orientation or positional relationship indicated by the terms "upper", "lower", etc. are based on the orientation or positional relationship shown in the drawings, only for the convenience of describing the present invention and making the description process easier, and not for the purpose of indicating or implying that the device or element in question must have the particular orientation described, be constructed and operated in the particular orientation, and therefore such description should not be construed as limiting the present invention; the terms "connected," "mounted," "secured," and the like are to be construed broadly, and may be, for example, a fixed connection between a plurality of objects, a removable connection between a plurality of objects, or an integral connection; the objects may be directly connected to each other or indirectly connected to each other through an intermediate medium. The specific meaning of the terms in the present invention can be understood in detail from the above data by those of ordinary skill in the art.

In the claims, specification, and drawings of the present invention, the descriptions of terms "one embodiment," "some embodiments," "particular embodiments," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In the claims, specification and drawings of the present invention, the schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A blower, comprising:

the fan body is provided with a first air inlet through which air can enter the fan body;

the first shell is connected with the fan body, a flow passage is arranged around the fan body, and the flow passage is communicated with the first air inlet;

the first shell is provided with a second air inlet, the second air inlet is connected with the flow channel, and the width of the flow channel is reduced from one side close to the second air inlet to one side close to the first air inlet.

2. The blower of claim 1, wherein the first housing comprises:

the first side of the side wall is connected with the fan body;

a transition portion, a first side of the transition portion being connected to a second side of the sidewall;

and the top wall is connected with the second side of the transition part.

3. The fan of claim 2, wherein the transition extends in an arc from the first side to the second side, and wherein the radius of the transition is 20 mm or more and 40 mm or less.

4. The fan of claim 2, wherein a side of the sidewall adjacent the first air inlet extends in an arc shape, and a radius of the side of the sidewall adjacent the first air inlet is greater than or equal to 40 millimeters and less than or equal to 80 millimeters.

5. The fan according to claim 1, wherein an angle of an included angle between an intake direction of the second intake port and a center line of the first housing is 0 degrees or more and 90 degrees or less.

6. The blower of claim 1, wherein the blower body comprises:

a second housing, a first side of the second housing being connected to the first housing;

the volute is connected with the second shell, is positioned at the second side of the second shell and encloses a mounting cavity with the second shell;

the impeller is arranged in the installation cavity.

7. The fan of claim 6, wherein the second housing is provided with the first air inlet, and the flow passage communicates with the mounting cavity through the first air inlet.

8. The blower of claim 7, wherein the blower body further comprises:

the flow collecting part is annularly arranged along the circumferential direction of the first air inlet, is connected with the second shell, and extends in an arc shape along the axial direction of the impeller into the mounting cavity.

9. The fan according to claim 8, wherein a height of the flow collecting member in an axial direction of the impeller is greater than 0 and equal to or less than 6 mm.

10. The fan of claim 6, wherein the angle of the inlet angle of the blades of the impeller is 50 degrees or more and 90 degrees or less.

11. The fan of claim 6, wherein the angle of the outlet angle of the blades of the impeller is 150 degrees or more and 170 degrees or less.

12. The fan of claim 6, wherein the scroll is provided with an air outlet, the fan body further comprising:

the first grille is connected with the volute and is positioned at the air outlet;

and the second grille is connected with the second shell and is positioned at the first air inlet.

13. The fan according to any one of claims 1 to 12, wherein a height of the first housing in the axial direction of the fan body is 40 mm or more and 80 mm or less.

14. A fresh air system comprising a fan according to any one of claims 1 to 13.

15. An air conditioner comprising a fan according to any one of claims 1 to 13, or a fresh air system according to claim 14.