CN210531228U - Impeller of multi-wing centrifugal fan and bathroom heater - Google Patents
Impeller of multi-wing centrifugal fan and bathroom heater Download PDFInfo
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- CN210531228U CN210531228U CN201920956034.6U CN201920956034U CN210531228U CN 210531228 U CN210531228 U CN 210531228U CN 201920956034 U CN201920956034 U CN 201920956034U CN 210531228 U CN210531228 U CN 210531228U
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Abstract
The utility model provides an impeller and bathroom heater of multi-wing centrifugal fan, this impeller include wheel hub, with the wheel hub is connected and to the first rim plate of circumference extension, set up in the blade on the first rim plate, wherein, the first rim plate has first face and second face, the blade includes a plurality ofly from the first face of first rim plate is that the preset angle is outwards extended and along the first face blade of the circumference interval arrangement of wheel hub, a plurality of from the second face of first rim plate is that the preset angle is outwards extended and along the second face blade of the circumference interval arrangement of wheel hub; each first surface blade and each second surface blade are distributed in a staggered mode. Based on the technical scheme provided by the utility model, each first face blade is the staggered distribution with each second face blade on first rim plate for in the air current can be comparatively average gets into the runner of blade, with the vortex noise that reduces the impeller during operation production.
Description
Technical Field
The utility model relates to a bathroom technical field especially relates to a multi-wing centrifugal fan's impeller and bathroom heater.
Background
The impeller is a component for converting wind energy into mechanical energy, and is particularly used as a component for blowing air in electrical appliances. For traditional impeller, its drawback lies in that upper and lower layer blade corresponds the setting for the blade way inner flow channel of blade blocks up seriously, forms the vortex, influences the air-out, and produces great noise.
SUMMERY OF THE UTILITY MODEL
In view of the above, the present invention has been made in order to provide an impeller of a multi-wing centrifugal fan and a bath heater which overcome or at least partially solve the above problems.
According to one aspect of the present invention, there is provided an impeller for a multi-blade centrifugal fan, the impeller comprising a hub, a first wheel disc connected to the hub and extending circumferentially, and blades arranged on the first wheel disc, wherein,
the first wheel disc is provided with a first surface and a second surface, the blades comprise a plurality of first surface blades which extend outwards from the first surface of the first wheel disc at a preset angle and are arranged at intervals along the circumferential direction of the hub, and a plurality of second surface blades which extend outwards from the second surface of the first wheel disc at a preset angle and are arranged at intervals along the circumferential direction of the hub;
each first surface blade and each second surface blade are distributed in a staggered mode.
Optionally, the preset angle is 80.27-90 degrees.
Optionally, the height ratio of the first surface blade to the second surface blade in the radial direction is 0.48-0.5.
Optionally, the vanes are arcuate vanes.
Optionally, the vane has an arcuate face having an inlet side, an outlet side; wherein
The included angle between the tangential direction of the inlet side of the arc-shaped surface and the tangential direction of the inlet side of the arc-shaped surface on a circle taking the center of the hub as the center is 70-75 degrees;
the included angle between the tangential direction of the outlet side of the arc-shaped surface and the tangential direction of the outlet side of the arc-shaped surface on a circle with the center of the hub as the center is 110-115 degrees.
Optionally, a flow passage is formed between any two adjacent blades, a distance from an inlet side of an arc-shaped surface of each blade to the center of the hub is an inner diameter of the flow passage, a distance from an outlet side of the arc-shaped surface of each blade to the center of the hub is an outer diameter of the flow passage, and a ratio of the inner diameter to the outer diameter of the flow passage is 0.785-0.83.
Optionally, the width between two adjacent blades is the width of a flow channel, and the widths of at least two adjacent flow channels are not equal.
Optionally, the first face blades are 37-45 and the second face blades are 37-45.
According to another aspect of the present invention, there is also provided a super bath, comprising a motor, a bottom frame assembly, an upper cover plate assembly and an impeller of the multi-wing centrifugal fan as described in any one of the above; wherein the content of the first and second substances,
the impeller and the motor are positioned in a space formed by the bottom frame assembly and the upper cover plate assembly, and the impeller works under the driving of the motor.
The embodiment of the utility model provides an in, the impeller includes wheel hub, be connected and to the first rim plate of circumference extension with wheel hub, set up the blade on first rim plate, wherein, first rim plate includes first face, the second face, the blade includes that a plurality of first faces from first rim plate are the first face blade that preset angle outwards extended and followed wheel hub's circumference interval arrangement, a plurality of second faces from first rim plate are the second face blade that preset angle outwards extended and followed wheel hub's circumference interval arrangement, each first face blade is staggered distribution with each second face blade. Above-mentioned first face blade and second face blade are staggered distribution on first rim plate, can make the comparatively steady runner that gets into the blade of air current in, reduced the vortex noise that produces in the impeller working process.
The above description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented according to the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more obvious and understandable, the following detailed description of the present invention is given.
The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.
Drawings
Some specific embodiments of the present invention will be described in detail hereinafter, by way of illustration and not by way of limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:
fig. 1 shows a front view of an impeller according to a first embodiment of the invention;
fig. 2 shows a top view of an impeller according to a first embodiment of the invention;
fig. 3 shows a perspective view of an impeller according to a first embodiment of the invention;
figure 4 shows a front view of an impeller according to a second embodiment of the invention;
fig. 5 shows a top view of an impeller according to a second embodiment of the invention;
fig. 6 shows a perspective view of an impeller according to a second embodiment of the invention;
fig. 7 shows a front view of an impeller according to a third embodiment of the invention;
fig. 8 shows a top view of an impeller according to a third embodiment of the invention;
fig. 9 shows a perspective view of an impeller according to a third embodiment of the present invention;
fig. 10 shows a schematic disassembly diagram of the super bath according to the embodiment of the present invention.
Description of the drawings: 100. an impeller; 111. a shaft hole; 112. a channel; 120. a first wheel disc; 130. a blade; 130a, inlet side of the arc; 130b, the exit side of the arc; 131. a first face blade; 132. a second-side blade; 140. a second wheel disc;
200. a bath heater; 210. a motor; 220. a bottom frame assembly; 221. an air inlet; 230. an upper cover plate assembly; 231. an air outlet;
A. presetting an angle; b1, inlet angle; b2, exit angle.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
It should be noted that the technical features of the embodiments and the alternative embodiments of the present invention can be combined with each other without conflict.
In order to solve the technical problem, the embodiment of the utility model provides a multi-wing centrifugal fan's impeller, combine fig. 1-9 to show, impeller 100 includes impeller 100, be connected and to the first rim plate 120 of circumference extension with wheel hub 110, set up blade 130 on first rim plate 120, wherein, first rim plate 120 has first face, the second face, blade 130 includes that a plurality of first faces from first rim plate 120 are the first face blade 131 that predetermines angle A and outwards extend and follow wheel hub 110's circumference interval arrangement, a plurality of second faces from first rim plate 120 are the second face blade 132 that predetermines angle A and outwards extend and follow wheel hub 110's circumference interval arrangement, each first face blade 131 is the staggered distribution with each second face blade 132.
The embodiment of the utility model provides an in, first face blade 131 is staggered on first rim plate 120 with second face blade 132, can make the comparatively steady runner of entering impeller of air current in, has reduced the vortex noise that produces in the impeller working process.
In this embodiment, the hub 110 of the impeller 100 is centrally provided with a shaft hole 111 for connecting with a driving device for driving the impeller 100 to operate, for example, a driving motor, a motor shaft of the driving motor can be fixedly connected with the impeller 100 based on the shaft hole 111 to drive the impeller 100 to rotate, the impeller 100 preferably further includes a second wheel disc 140, and the second face blade 132 is disposed between the first wheel disc 120 and the second wheel disc 140.
And, still be formed with a plurality of passageways 112 on impeller 100's the wheel hub 110, a plurality of passageways 112 can increase the rotational speed of impeller 100 during operation, promote the ventilation efficiency of the affiliated equipment of impeller 100, and the affiliated equipment of impeller 100 can be the fan, the utility model discloses do not specifically limit it.
In a preferred embodiment, each of the first face blades 131 and the second face blades 132 is disposed on the first wheel disc 120 at a predetermined angle a with respect to the first wheel disc 120, and preferably, the predetermined angle a may be 80.27 to 90 degrees, for example, 80.27, 82, 85, 88, and 90 degrees.
In a preferred embodiment, the ratio of the height of the first surface blade 131 to the height of the second surface blade 132 in the radial direction is 0.48 to 0.5.
In a preferred embodiment, the blades 130 are arcuate blades. Specifically, compared with non-arc-shaped blades, the wind speed of the impeller 100 during operation is obviously enhanced, and the working efficiency of equipment to which the impeller belongs is greatly improved.
In a preferred embodiment, the vane 130 has an arc-shaped surface having an inlet side 130a and an outlet side 130B, and the angle between the tangential direction of the inlet side 130a of the arc-shaped surface and the tangential direction of the inlet side 130a of the arc-shaped surface on a circle centered on the center of the hub 110 is 70 ° to 75 ° relative to the inlet angle B1 of the vane 130; the angle between the tangential direction of the outlet side 130B of the arc-shaped face and the tangential direction of the outlet side 130B of the arc-shaped face on a circle centered on the center of the hub 110 is 110 ° to 115 ° of the outlet angle B2 of the blade 130. The larger the inlet angle B1 of the blade 130 is, the larger the air volume of the equipment to which the impeller 100 belongs is, and multiple tests show that when the inlet angle B1 of the blade 130 is 70-75 degrees, the outlet angle B2 is 110-115 degrees, comprehensive factors such as comprehensive air volume, pressure, energy efficiency and the like are used, the performance of the impeller is optimal.
In a preferred embodiment, a flow channel is formed between any two adjacent blades 130, the distance from the inlet side 130a of the arc-shaped surface of the blade 130 to the center of the hub 110 is the inner diameter of the flow channel, the distance from the outlet side 130b of the arc-shaped surface of the blade 130 to the center of the hub 110 is the outer diameter of the flow channel, and the ratio of the inner diameter to the outer diameter of the flow channel is 0.785-0.83. Wherein, the outer diameter of the flow channel is preferably 160-165 mm.
In a preferred embodiment, the width between two adjacent blades is the width of the flow channel, and the widths of at least two adjacent flow channels are not equal. Specifically, the widths of at least two partially adjacent flow channels formed by the first-surface blades 131 are not equal, and the widths of at least two partially adjacent flow channels formed by the second-surface blades 132 are not equal. The widths of the adjacent flow channels are unequal, so that the frequency of the air struck by the blades in rotation is different, the noise can be dispersed, and the effect of reducing the noise is further achieved
In a preferred embodiment, the first surface blades are 37-45 blades, and the second surface blades are 37-45 blades.
Based on the above, the present invention provides three preferred embodiments, as follows:
example one
Referring to fig. 1 to 3, in the present embodiment, the first face blades 131 and the second face blades 132 are respectively disposed on the first face and the second face of the first wheel disc 120 and are staggered from the first wheel disc 120 by a preset angle a, the preset angle a is 82 degrees, a height ratio B1/B2 of the first face blades 131 to the second face blades 132 in the radial direction is 0.48, an inner-outer diameter ratio D1/D2 of the flow channel is 0.785, widths of at least part of two adjacent flow channels are unequal, the number of the first face blades 131 and the number of the second face blades 132 are equal to 45, an inlet angle B1 of the blades is 72 °, and an outlet angle B2 is 113 °.
In this embodiment, the interlaced design of the first face blades 131 and the second face blades 132 on the first wheel disc 120 can reduce the eddy noise generated when the impeller 100 works, the preset angle a between the first face blades 131 and the first face blades 132 and the first wheel disc 120 is 82 °, so that when the impeller 100 rotates, the first face blades 131 and the second face blades 132 exert an acting force on the airflow away from the first wheel disc 120, the gas is prevented from gathering near the first wheel disc 120, the flow velocity of the gas near the first wheel disc 120 is reduced, the flow velocity of the gas in the flow channel of the impeller 100 is more uniform, the noise generated during the working process of the impeller 100 is further reduced, and the working efficiency of the equipment to which the impeller belongs is also improved The performance of the impeller can reach the optimum by comprehensive factors such as an outlet angle, comprehensive pressure, energy efficiency and the like.
Example two
Referring to fig. 4 to 6, in the present embodiment, the first face blade 131 is disposed on the first face of the first wheel disc 120 at a preset angle a80.27 °, the second face blade 132 is disposed on the second face of the first wheel disc 120 at a preset angle a80.27 °, the first face blade and the second face blade are distributed in a staggered manner, a height ratio B1/B2 of the first face blade 131 to the second face blade 132 in the radial direction is 0.5, an inner-outer diameter ratio D1/D2 of the flow channel is 0.82, widths of at least some adjacent two flow channels are unequal, the first face blade 131 and the second face blade 132 are 37 pieces, an inlet angle B1 of the blade is 72 °, and an outlet angle B2 is 113 °.
In this embodiment, the first face blades 131 and the second face blades 132 are distributed in a staggered manner on the first wheel disc 120 to reduce the eddy noise generated when the impeller 100 works, and the first face blades 131 and the second face blades 132 are arranged on the first wheel disc 120 at a preset angle a80.27 ° with respect to the first wheel disc 120, so that when the impeller 100 rotates, the first face blades 131 and the second face blades 132 exert an acting force on the airflow away from the first wheel disc 120 to prevent the gas from gathering near the first wheel disc 120, further reduce the noise generated by the impeller 100 in the working process, and improve the working efficiency of the equipment to which the impeller 100 belongs at the same time, in this embodiment, the inner-outer diameter ratio value of the flow channel formed by the first face blades 131 and the second face blades 132 matches with the preset angle value, the radial height ratio value, the number of the blades, the inlet angle and the outlet angle of the blades, the comprehensive pressure and energy efficiency and other comprehensive factors, the performance of the impeller can be optimized.
EXAMPLE III
Referring to fig. 7 to 9, in the present embodiment, the first face blades 131 and the second face blades 132 are respectively disposed on the first face and the second face of the first wheel disc 120 and are distributed in a staggered manner, the preset angle a is 90 °, the inner-outer diameter ratio D1/D2 of the flow channel is 0.8, the widths of at least part of two adjacent flow channels are not equal, the height ratio B1/B2 of the first face blades 131 and the second face blades 132 in the radial direction is 0.5, the first face blades 131 and the second face blades 132 are 45, the inlet angle B1 of the blades is 72 °, and the outlet angle B2 of the blades is 113 °.
In this embodiment, the staggered design of the first surface blades 131 and the second surface blades 132 can reduce the eddy noise generated by the impeller 100 during operation, at least part of the adjacent flow channels are unequal in width, so that the frequency of the air hit by the blades in rotation during operation of the impeller 100 is different, the noise can be dispersed, and the effect of reducing the noise can be further achieved.
Above-mentioned three embodiment is based on the utility model provides a numerical range gives better embodiment, and the field technical personnel are based on the utility model provides a multiple impeller can also be designed to above-mentioned numerical range, the utility model discloses technical scheme is not limited to above-mentioned three embodiment.
Based on the same inventive concept, as shown in fig. 10, the present invention further provides a bathroom heater 200, which includes a motor 210, a bottom frame assembly 220, an upper cover plate assembly 230, and an impeller 100 as described in any of the above embodiments, wherein the impeller 100 and the motor 210 are located in a space formed by the bottom frame assembly 220 and the upper cover plate assembly 230, and the impeller 100 is driven by the motor 210 to operate.
Specifically, the super bath 200 is further provided with a heating device such as a PTC heating device, the upper cover plate assembly is provided with an air outlet 231, and the PTC assembly is located at one side of the air outlet 231; an air inlet 221 is formed in a side wall of the bottom frame assembly 220, a fluid guide channel is formed by the air inlet 221 and the air outlet 231, and air fluid generated by the impeller 100 flows out of the air outlet 231 after being heated by the PTC heating device through the fluid guide channel.
Above-mentioned impeller 100 except being applied to the bathroom heater, can also be applied to scavenger fan, cabinet air conditioner, lampblack absorber etc. the utility model discloses do not any restriction to above-mentioned impeller 100's application scene.
Based on the above technical scheme, through optimizing the blade molded lines and the spatial layout of impeller, reduced the noise that produces in the impeller work to promote the ventilation efficiency of the affiliated equipment of impeller, improved user experience greatly.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments can be modified or some or all of the technical features can be equivalently replaced within the spirit and principles of the present invention; such modifications and substitutions do not depart from the scope of the present invention.
Claims (9)
1. An impeller of a multi-wing centrifugal fan is characterized by comprising a hub, a first wheel disc which is connected with the hub and extends towards the circumferential direction, and blades arranged on the first wheel disc, wherein,
the first wheel disc is provided with a first surface and a second surface, the blades comprise a plurality of first surface blades which extend outwards from the first surface of the first wheel disc at a preset angle and are arranged at intervals along the circumferential direction of the hub, and a plurality of second surface blades which extend outwards from the second surface of the first wheel disc at a preset angle and are arranged at intervals along the circumferential direction of the hub;
each first surface blade and each second surface blade are distributed in a staggered mode.
2. The impeller according to claim 1, characterized in that said predetermined angle is 80.27-90 degrees.
3. The impeller according to claim 1 or 2, characterized in that the ratio of the height of the first face blades to the height of the second face blades in the radial direction is 0.48-0.5.
4. The impeller according to claim 1 or 2, characterized in that said blades are arcuate blades.
5. The impeller of claim 4, wherein said vanes have arcuate faces having an inlet side, an outlet side; wherein
The included angle between the tangential direction of the inlet side of the arc-shaped surface and the tangential direction of the inlet side of the arc-shaped surface on a circle taking the center of the hub as the center is 70-75 degrees;
the included angle between the tangential direction of the outlet side of the arc-shaped surface and the tangential direction of the outlet side of the arc-shaped surface on a circle with the center of the hub as the center is 110-115 degrees.
6. The impeller according to claim 5, wherein a flow passage is formed between any two adjacent blades, the distance from the inlet side of the arc-shaped surface of the blade to the center of the hub is the inner diameter of the flow passage, the distance from the outlet side of the arc-shaped surface of the blade to the center of the hub is the outer diameter of the flow passage, and the ratio of the inner diameter to the outer diameter of the flow passage is 0.785-0.83.
7. The impeller according to claim 5, wherein the width between two adjacent blades is the width of a flow channel, and the widths of at least some of the adjacent flow channels are not equal.
8. The impeller according to claim 1 or 2, characterized in that said first face blades are 37-45 blades and said second face blades are 37-45 blades.
9. A super bath comprising a motor, a bottom frame assembly, an upper cover plate assembly and an impeller of a multi-wing centrifugal fan according to any one of claims 1 to 8; wherein the content of the first and second substances,
the impeller and the motor are positioned in a space formed by the bottom frame assembly and the upper cover plate assembly, and the impeller works under the driving of the motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920956034.6U CN210531228U (en) | 2019-06-24 | 2019-06-24 | Impeller of multi-wing centrifugal fan and bathroom heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920956034.6U CN210531228U (en) | 2019-06-24 | 2019-06-24 | Impeller of multi-wing centrifugal fan and bathroom heater |
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| Publication Number | Publication Date |
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| CN210531228U true CN210531228U (en) | 2020-05-15 |
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| CN201920956034.6U Active CN210531228U (en) | 2019-06-24 | 2019-06-24 | Impeller of multi-wing centrifugal fan and bathroom heater |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111734675A (en) * | 2020-06-16 | 2020-10-02 | 泛仕达机电股份有限公司 | Backward centrifugal wind wheel and centrifugal fan |
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2019
- 2019-06-24 CN CN201920956034.6U patent/CN210531228U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111734675A (en) * | 2020-06-16 | 2020-10-02 | 泛仕达机电股份有限公司 | Backward centrifugal wind wheel and centrifugal fan |
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