CN115434946A - Centrifugal fan impeller and centrifugal fan - Google Patents
Centrifugal fan impeller and centrifugal fan Download PDFInfo
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- CN115434946A CN115434946A CN202211177759.8A CN202211177759A CN115434946A CN 115434946 A CN115434946 A CN 115434946A CN 202211177759 A CN202211177759 A CN 202211177759A CN 115434946 A CN115434946 A CN 115434946A
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- bottom plate
- blades
- centrifugal fan
- blade
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- 238000003466 welding Methods 0.000 claims abstract description 68
- 238000000034 method Methods 0.000 abstract description 28
- 230000000694 effects Effects 0.000 description 12
- 229910000679 solder Inorganic materials 0.000 description 6
- 238000007788 roughening Methods 0.000 description 5
- 238000005476 soldering Methods 0.000 description 4
- 230000002349 favourable effect Effects 0.000 description 2
- 206010010904 Convulsion Diseases 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000003486 chemical etching Methods 0.000 description 1
- 230000036461 convulsion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/26—Rotors specially for elastic fluids
- F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
- F04D29/281—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers
- F04D29/282—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers the leading edge of each vane being substantially parallel to the rotation axis
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
- F04D17/08—Centrifugal pumps
- F04D17/16—Centrifugal pumps for displacing without appreciable compression
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/26—Rotors specially for elastic fluids
- F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
- F04D29/30—Vanes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/60—Mounting; Assembling; Disassembling
- F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
- F04D29/624—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The application discloses a centrifugal fan impeller and a centrifugal fan, wherein a bottom plate assembly comprises a bottom plate inner plate and a bottom plate outer plate which are arranged in a laminated mode, and the bottom plate outer plate is connected to the outer side surface of the bottom plate inner plate at least in a welding mode; the top plate assembly comprises a top plate inner plate and a top plate outer plate which are arranged in a laminated mode, and the top plate outer plate is connected to the outer side surface of the top plate inner plate at least in a welding mode; the two ends of the blade in the length direction penetrate into the bottom plate assembly and the top plate assembly respectively, the connection mode of the two ends of the blade in the length direction with the bottom plate inner plate and the top plate inner plate at least comprises clamping, and the connection mode of the two ends of the blade in the length direction with the bottom plate outer plate and the top plate outer plate at least comprises welding; according to the centrifugal fan impeller and the centrifugal fan provided by the invention, the welding positions of the centrifugally classified blades are adjusted, the bottom plate assembly is separated into the bottom plate inner plate and the bottom plate outer plate, and the top plate assembly is separated into the top plate inner plate and the top plate outer plate, so that the problem that the blades are blocked mutually in the welding process is solved.
Description
Technical Field
The invention relates to the field of centrifugal fan structures, in particular to a centrifugal fan impeller and a centrifugal fan.
Background
The impeller of a centrifugal fan often comprises a bottom fixed plate and a top fixed plate, with a plurality of blades arranged between the top fixed plate and the bottom fixed plate. Through the rotation of impeller, the effect of convulsions and air supply can be played to the blade. The two ends of the blade are connected to the inner side of the top fixing plate and the inner side of the bottom fixing plate by welding. The mutual blocking between the blades makes the welding process difficult to realize, and the welding efficiency is low.
Disclosure of Invention
The invention mainly aims to provide a centrifugal fan impeller and a centrifugal fan, and aims to solve the problems that in the welding process of blades, the blades are easy to block and the welding efficiency is low.
In order to achieve the above object, the present invention provides a centrifugal fan impeller comprising:
the bottom plate assembly comprises a bottom plate inner plate and a bottom plate outer plate which are arranged in a laminated manner, and the bottom plate outer plate is connected to the outer side surface of the bottom plate inner plate at least in a welding manner;
the top plate assembly comprises a top plate inner plate and a top plate outer plate which are arranged in a laminated mode, and the top plate outer plate is connected to the outer side surface of the top plate inner plate at least in a welding mode;
a plurality of blades encircle and arrange, blade length direction's both ends penetrate respectively the bottom plate subassembly and the roof subassembly, blade length direction both ends with the bottom plate inner panel and the connected mode of roof inner panel includes the joint at least, blade length direction both ends with the bottom plate planking and the connected mode of roof planking is including the welding at least.
Furthermore, a plurality of bottom plate inner plate holes corresponding to the plurality of blades are formed in the bottom plate inner plate, the bottom plate inner plate holes are in consistent fit or interference fit with the blades at the bottom plate inner plate holes, a plurality of bottom plate outer plate holes corresponding to the plurality of blades are formed in the bottom plate outer plate, and the width direction sizes of the bottom plate outer plate holes are in clearance fit with the thickness direction of the blades at the bottom plate outer plate holes;
the blade is characterized in that a plurality of top plate inner plate holes corresponding to a plurality of blades are formed in the top plate inner plate, the top plate inner plate holes are in shape consistent fit or shape interference fit with the blades at the positions of the top plate inner plate holes, a plurality of top plate outer plate holes corresponding to the blades are formed in the top plate outer plate, and the width direction of the top plate outer plate holes is in clearance fit with the thickness direction of the blades at the positions of the top plate outer plate holes.
Further, the blade comprises a middle area and a bottom connecting area and a top connecting area which are respectively positioned at the two ends of the middle area in the length direction;
the width direction dimension of the middle area at the bottom connecting area position is larger than the width of the bottom connecting area, so that bottom shoulder areas are formed at two sides of the bottom connecting area in the width direction, and the shape of the bottom shoulder areas is matched with that of the bottom plate inner plate at the corresponding position;
the middle section has a width-directional dimension at the top joint section position larger than the width of the top joint section, so that bottom shoulder sections are formed on both sides of the top joint section in the width direction, the shape of the top shoulder sections matching the top panel inner panel at the corresponding position.
Further, when the blades are connected with the top plate inner plate and the top plate outer plate, the blades sink to the surface of the top plate outer plate far away from the top plate inner plate; when the blades are connected with the inner plate of the bottom plate and the outer plate of the bottom plate, the blades sink to the surface of the outer plate of the bottom plate, which is far away from the inner plate of the bottom plate.
Furthermore, the two end faces of the blade in the length direction are both provided with an undulating structure.
Furthermore, both ends of the blade in the length direction are subjected to roughening treatment.
Furthermore, a plurality of first protruding structures are arranged on the inner plate of the bottom plate, a plurality of first through holes corresponding to the first protruding structures are arranged on the outer plate of the bottom plate, and the first protruding structures and the first through holes form alignment structures; the roof plate is characterized in that a plurality of second protruding structures are arranged on the roof plate inner plate, a plurality of second through holes corresponding to the second protruding structures are arranged on the roof plate outer plate, and the second protruding structures and the second through holes form alignment structures.
Furthermore, the plurality of first protruding structures form a plurality of ferrule arrangements taking the center of the bottom plate inner plate as the center, and when the first protruding structures and the first through holes form corresponding structures, the first protruding structures sink or are flush with the surface of the bottom plate outer plate far away from the bottom plate inner plate; the plurality of second protruding structures form a plurality of ferrule arrangements taking the circle center of the top plate inner plate as the center, and when the second protruding structures and the second through holes form corresponding structures, the second protruding structures sink or are flush with the surface of the top plate outer plate far away from the top plate inner plate.
Furthermore, the base plate outer plate is annularly spliced by 2-6 independent sub-base plates, and a first deformation joint is arranged between every two adjacent sub-base plates; the top plate outer plate is composed of 2-6 independent sub-top plates, and a second deformation joint is arranged between every two adjacent sub-top plates.
The invention also provides a centrifugal fan which comprises the centrifugal fan impeller.
According to the centrifugal fan impeller and the centrifugal fan provided by the invention, the welding positions of the centrifugally classified blades are adjusted, the bottom plate assembly is separated into the bottom plate inner plate and the bottom plate outer plate, and the top plate assembly is separated into the top plate inner plate and the top plate outer plate, the two ends of the blades in the length direction are at least clamped with the bottom plate inner plate and the top plate inner plate, and the two ends of the blades in the length direction are at least welded with the bottom plate outer plate and the top plate outer plate in a connecting mode, so that the problem that the blades are mutually blocked in the welding process is solved. The blade welding device has the advantages that the blade welding process is facilitated, and meanwhile the position accuracy of the blade fixed before welding is improved.
Drawings
FIG. 1 is a schematic view of an inner plate of a bottom plate of a centrifugal fan impeller according to an embodiment of the present invention;
FIG. 2 is a schematic view of the outer plate of the bottom plate of the impeller of the centrifugal fan according to one embodiment of the present invention;
FIG. 3 is a schematic view of a centrifugal fan impeller blade in accordance with an embodiment of the present invention;
FIG. 4 is a schematic view of a plurality of wraps around a centrifugal fan wheel in accordance with an embodiment of the present invention;
FIG. 5 is a schematic view of the inner plate of the top plate of the centrifugal fan impeller according to one embodiment of the present invention;
FIG. 6 is a schematic view of the outer plate of the top plate of the centrifugal fan impeller in accordance with one embodiment of the present invention;
FIG. 7 is a schematic view of an assembly process for a centrifugal fan impeller according to an embodiment of the present invention;
FIG. 8 is an assembled schematic view of a centrifugal fan impeller according to an embodiment of the present invention;
FIG. 9 is a schematic view of a welding structure of a blade in the impeller of the centrifugal fan according to the embodiment of the present invention;
FIG. 10 is a schematic view of the outer plate of the bottom plate of the centrifugal fan impeller according to the second embodiment of the present invention;
fig. 11 is a schematic view of the outer plate of the top plate of the centrifugal fan impeller according to the second embodiment of the present invention.
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
It should be understood that the specific embodiments described herein are merely illustrative of the invention and do not limit the invention.
As used herein, the singular forms "a", "an", "the" and "the" include plural referents unless the content clearly dictates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, units, modules, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, units, modules, components, and/or groups thereof. It will be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may also be present. Further, "connected" or "coupled" as used herein may include wirelessly connected or wirelessly coupled. As used herein, the term "and/or" includes all or any element and all combinations of one or more of the associated listed items.
It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
Referring to fig. 1-9, in one embodiment of the present invention, a centrifugal fan impeller comprises:
the bottom plate assembly 100 comprises a bottom plate inner plate 110 and a bottom plate outer plate 120 which are arranged in a laminated mode, wherein the bottom plate outer plate 120 is connected to the outer side surface of the bottom plate inner plate 110 at least in a welding mode;
the roof plate assembly 200 comprises a roof plate inner plate 210 and a roof plate outer plate 220 which are arranged in a laminated manner, wherein the roof plate outer plate 220 is connected to the outer side surface of the roof plate inner plate 210 at least in a welding manner;
a plurality of blades 300 encircle and arrange, the both ends of blade 300 length direction penetrate respectively bottom plate subassembly 100 and roof subassembly 200, the blade 300 length direction both ends with bottom plate inner panel 110 and roof inner panel 210's connected mode includes the joint at least, the blade 300 length direction both ends with bottom plate planking 120 and roof planking 220's connected mode includes the welding at least.
Taking the bottom plate assembly 100 as an example, by decomposing the bottom plate assembly 100 into the bottom plate inner plate 110 and the bottom plate outer plate 120, the welding process is performed from the outer side of the bottom plate outer plate 120, that is, the welding of the blade 300 is performed from the outer side of the centrifugal fan impeller, so that the difficulty of welding the blade 300 is reduced, and a space for deformation is provided in the length direction of the blade 300; during the initial installation of the blade 300, the clamping effect between the blade 300 and the inner plate 210 of the top plate supports the fixed blade 300, and provides support for the accuracy of the welding position of the blade 300. When the blade 300 is welded to the base plate outer plate 120, the base plate outer plate 120 can be welded to the base plate inner plate 110 at the same time, for example, the base plate inner plate 110 is provided with the base plate inner plate hole 111, the base plate outer plate 120 is provided with the base plate outer plate hole 121, the area of the base plate outer plate hole 121 is large and the base plate outer plate hole 121 covers the base plate inner plate hole 111, and therefore, in the process of welding the blade 300, the base plate outer plate 120 is also welded to the base plate inner plate 110 at the position of the base plate outer plate hole 121; besides the blades 300 are clamped and fixed through the inner plate holes 111 of the bottom plate, the inner plate 110 of the bottom plate also has the effect of welding and fixing the blades 300; in the welding process, when the solder 400 is less and does not overflow the bottom plate outer plate hole 121, the blade 300 is welded and fixed to the inner side wall of the bottom plate outer plate hole 121, and when the solder 400 is more and overflows the bottom plate outer plate hole 121, the blade 300 is also welded and fixed to the outer side surface of the top plate outer plate 220. The thickness of the bottom plate inner plate 110 and the top plate inner plate 210 is 2 to 4 mm, the thickness of the bottom plate outer plate 120 and the top plate outer plate 220 is 1 to 3 mm, especially when the area of the bottom plate outer plate hole 121 is large and covers the bottom plate inner plate hole 111, the bottom plate inner plate 110 is thick, on one hand, the effect of clamping and fixing the blade 300 in the bottom plate inner plate hole 111 can be improved, and on the other hand, the fixing effect of welding the blade 300 to the bottom plate inner plate 110 can be improved.
In summary, according to the centrifugal fan impeller and the centrifugal fan provided by the invention, by adjusting the welding position of the centrifugally classified blades 300, and simultaneously separating the bottom plate assembly 100 into the bottom plate inner plate 110 and the bottom plate outer plate 120 and separating the top plate assembly 200 into the top plate inner plate 210 and the top plate outer plate 220, the two ends of the blades 300 in the length direction are at least clamped with the bottom plate inner plate 110 and the top plate inner plate 210, and the two ends of the blades 300 in the length direction are at least welded with the bottom plate outer plate 120 and the top plate outer plate 220 in a connecting manner, so that the problem that the blades 300 are blocked with each other in the welding process is solved. The above arrangement facilitates the welding process of the blade 300 and also improves the positional accuracy of the blade 300 to be fixed before welding.
Referring to fig. 7 to 9, in an embodiment, a plurality of bottom plate inner plate holes 111 corresponding to a plurality of blades 300 are disposed on the bottom plate inner plate 110, the bottom plate inner plate holes 111 and the blades 300 at the bottom plate inner plate holes 111 form a shape-conforming fit or a shape-interference fit, a plurality of bottom plate outer plate holes 121 corresponding to a plurality of blades 300 are disposed on the bottom plate outer plate 120, and a width dimension of the bottom plate outer plate holes 121 and a thickness dimension of the blades 300 at the bottom plate outer plate holes 121 form a clearance fit;
be provided with on the roof inner panel 210 and correspond a plurality of roof inner panel holes 211 of blade 300, roof inner panel hole 211 with the roof inner panel hole 211 department the blade 300 forms shape uniform fit or shape interference fit, be provided with on the roof planking 220 and correspond a plurality of the outer panel hole 221 of a plurality of roof of blade 300, the width direction size in the outer panel hole 221 of roof with the outer panel hole 221 department of blade 300 thickness direction forms clearance fit.
In the process of fixing the blade 300, the blade 300 is clamped and fixed by the bottom plate inner plate hole 111 at the bottom plate inner plate 110, and the blade 300 is clamped and fixed by the top plate inner plate hole 211 at the top plate inner plate 210. The plurality of blades 300, the bottom plate inner plate 110 and the top plate inner plate 210 can form a stable primary fixing structure, and particularly, the stability of the primary fixing structure is better when the bottom plate inner plate hole 111 and the top plate inner plate hole 211 form an interference size fit in the thickness direction and the width direction of the blade 300.
In the present invention, the final fixing manner of the blade 300 is soldering, and the bottom plate outer plate hole 121 and the top plate outer plate hole 221 enhance the fixing area of soldering and give a flowing space for the solder 400. In this embodiment, the bottom plate outer plate hole 121 and the top plate outer plate hole 221 form a clearance fit in the thickness direction of the blade 300, so that the welding area between the blade 300 and the top plate outer plate 220 is increased (the first welding area 220a is increased), and meanwhile, since the bottom plate inner plate hole 111 is narrower than the bottom plate outer plate hole 121, the bottom plate inner plate 110 and the bottom plate outer plate 120 can form a welding fixing effect together in the process of welding the blade 300. Accordingly, since the top plate inner plate hole 211 is narrower than the top plate outer plate hole 221, the top plate inner plate 210 and the top plate outer plate 220 can form a welding fixing effect together (through the second welding region 210 b) during the welding process of the blade 300. Taking top plate outer-plate hole 221 as an example, solder 400 is confined in top plate outer-plate hole 221, forming a more regular shape; when the amount of the solder 400 is large and overflows into the top plate outer plate hole 221, the third soldering area 220b is added, so that the soldering effect of the blade 300 is improved.
Referring to fig. 3 and 7, in one embodiment, the blade 300 includes a middle region 310 and a bottom connection region 320 and a top connection region 330 at both ends of the middle region 310 in a length direction;
the width-directional dimension of the middle region 310 at the position of the bottom connection region 320 is larger than the width of the bottom connection region 320, so that bottom shoulder regions 321 are formed at both sides of the bottom connection region 320 in the width direction, the shape of the bottom shoulder regions 321 matching the floor inner panel 110 at the corresponding position;
the width-directional dimension of the middle region 310 at the top connection region 330 is larger than the width of the top connection region 330, so that bottom shoulder regions 321 are formed at both sides of the top connection region 330 in the width direction, and the shape of the top shoulder region 331 matches the top panel inner panel 210 at the corresponding position.
In the present invention, the final fixing manner of the blade 300 is welding, and thus the fixing effect of the blade 300 and the simplification of the fixing manner are important to the assembling process of the centrifugal fan impeller during the welding process. In the present embodiment, by the shape design of the vane 300, a bottom shoulder area 321 and a top shoulder area 331 are formed on the end portions of the middle area 310 in the length direction, and the movement of the vane 300 in the length direction thereof is restricted by the bottom shoulder area 321 and the top shoulder area 331 abutting against the bottom plate inner plate 110 and the top plate inner plate 210, respectively; at this moment, at the bottom plate inner plate 110, the bottom plate inner plate hole 111 and the top plate inner plate 210 also form a clamping and fixing effect on the blade 300 at the same time, and the movement of the blade 300 in the thickness direction and the width direction is limited, so that the better primary mechanical fixing of the blade 300 is completed, and the welding position of the blade 300 is accurate.
In one embodiment, when the blade 300 is connected to the top plate inner plate 210 and the top plate outer plate 220, the blade 300 is sunk to the surface of the top plate outer plate 220 away from the top plate inner plate 210; when the blade 300 is connected to the inner bottom plate 110 and the outer bottom plate 120, the blade 300 sinks to the surface of the outer bottom plate 120 away from the inner bottom plate 110.
The flatness of the outer surface of the top plate inner panel 210 and the bottom plate inner panel 110 is facilitated. Taking the example of arc welding of the blade 300 at the position of the top plate outer plate hole 221, the welding process may proceed along the width direction trend of the blade 300 on the end surface in the length direction of the blade 300, and at this time, the solder 400 may be confined in the top plate outer plate hole 221. If the two end surfaces of the blade 300 in the length direction are protruded, the two side surfaces of the blade 300 may need to be welded, which reduces the processing efficiency, is not favorable for the flatness of the top plate inner plate 210 and the bottom plate inner plate 110, and is not favorable for the welding material solidification process specification.
Referring to fig. 3 and 8, in one embodiment, the blade 300 has an undulation structure 340 formed on both end surfaces in a length direction thereof.
The welding surface area of the two end faces of the blade 300 with square length is refreshed through the undulating structure 340, and the welded fixing effect of the blade 300 is improved. The undulation 340 may be in the form of a sawtooth, a battlement, a wave, or the like. The preferred single sawtooth that is trapezoidal sawtooth structure of undulation structure, above-mentioned trapezoidal structure can promote the welding fixation face by a great extent, and the manufacturing of the mold processing of blade 300 of also being convenient for is convenient for two terminal surfaces and the exterior structure butt of blade 300 length direction (in the preliminary fixed in-process of blade 300 and bottom plate subassembly 100 and roof subassembly 200).
In one embodiment, the two ends of the blade 300 in the length direction are roughened.
The roughening process is not limited to the roughening process on both longitudinal end surfaces of the blade 300, and the outer peripheral surfaces of both longitudinal end surfaces of the blade 300 (i.e., the positions of the regions necessary for welding the blade 300) may be roughened at the same time. By roughening the blade 300, the weldability of the blade 300 at this location can be enhanced, which in turn can improve the secured stability of the blade 300. The roughening treatment may be performed by physical blasting or chemical etching.
Referring to fig. 1 to 8, in an embodiment, a plurality of first protruding structures 112 are disposed on the inner floor panel 110, a plurality of first through holes 122 corresponding to the first protruding structures 112 are disposed on the outer floor panel 120, and the first protruding structures 112 and the first through holes 122 form an alignment structure; the top plate inner plate 210 is provided with a plurality of second protruding structures 212, the top plate outer plate 220 is provided with a plurality of second through holes 222 corresponding to the second protruding structures 212, and the second protruding structures 212 and the second through holes 222 form an alignment structure.
Taking the inner floor panel 110 and the outer floor panel 120 as an example, the inner floor panel 110 and the outer floor panel 120 can be initially aligned by aligning and matching the first protrusion structure 112 and the first through hole 122; the positional accuracy of the inner floor panel 110 and the outer floor panel 120 is improved when the final fixed connection is formed. It should be noted that the first protrusion structure 112 and the first through hole 122 not only can perform the function of preliminary position alignment, but also can limit the deformation of the relative position between the inner floor panel 110 and the outer floor panel 120 due to the matching of the first protrusion structure 112 and the first through hole 122 during the final fixing process of the inner floor panel 110 and the outer floor panel 120. The first protruding structure 112 forms an interference fit with the first through hole 122 in the circumferential direction, so the bonding strength between the inner floor panel 110 and the outer floor panel 120 is improved.
In one embodiment, the first protrusion structure 112 is welded to the first through hole 122, and the second protrusion structure 212 is welded to the second through hole 222. The above welding manner enhances the degree of connection between the bottom plate inner panel 110 and the bottom plate outer panel 120, and the degree of connection between the top panel inner panel 210 and the top panel outer panel 220.
In one embodiment, the plurality of first protruding structures 112 form a plurality of ferrule arrangements centered at the center of the bottom plate inner plate 110, and when the first protruding structures 112 and the first through holes 122 form corresponding structures, the first protruding structures 112 are sunken or flush with the surface of the bottom plate outer plate 120 away from the bottom plate inner plate 110; the plurality of second protruding structures 212 form a plurality of collar arrangements centered on the center of the top plate inner plate 210, and when the second protruding structures 212 and the second through holes 222 form corresponding structures, the second protruding structures 212 are sunken or flush with the surface of the top plate outer plate 220 away from the top plate inner plate 210.
Due to the size limitation of the first protruding structure 112 and the second protruding structure 212, the flatness of the outer side surfaces of the bottom plate outer plate 120 and the top plate outer plate 220 is not affected, the situations of accidental scratch and the like of the bottom plate outer plate 120 and the top plate outer plate 220 in the rotating process are avoided, and the accidental operation is avoided. Taking the bottom plate inner plate 110 as an example, due to the property of ferrule arrangement, the first protruding structures 112 are arranged at intervals in the diameter direction of the bottom plate inner plate 110, so that the first protruding structures 112 and the first through holes 122 can be arranged more uniformly on the bottom plate inner plate 110, the alignment effect of the bottom plate inner plate 110 and the bottom plate outer plate 120 is improved, and the bottom plate inner plate 110 and the bottom plate outer plate 120 can limit deformation with each other. In particular, the first protrusion structure 112 and the first through hole 122 can be formed together during the stamping process of the inner floor panel 110 and the outer floor panel 120 by adjusting the shape of the mold.
Referring to fig. 10 and 11, in one embodiment, the floor outer panel 120 is annularly spliced by 2 to 6 independent sub-floors 123, and a first deformation joint 124 is disposed between the adjacent sub-floors 123; the top plate outer plate 220 is composed of 2 to 6 independent sub top plates 223, and a second deformation joint 224 is arranged between the adjacent sub top plates 223.
In the prior art, the top plate and the bottom plate of the impeller are all of an integrated structure, but in the invention, because the bottom plate assembly 100 comprises the bottom plate inner plate 110 and the bottom plate outer plate 120, and the top plate assembly 200 comprises the top plate inner plate 210 and the top plate outer plate 220, the welding mainly acts on the bottom plate outer plate 120 and the top plate outer plate 220, the bottom plate inner plate 110 and the top plate inner plate 210 can be completely used as structural supports, the bottom plate outer plate 120 is divided into 2 to 6 independent sub-bottom plates 123, the top plate outer plate 220 is divided into 2 to 6 independent sub-top plates 223, and the bottom plate outer plate 120 or the top plate outer plate 220 is finally formed into an integrated structure through welding. The first deformation joint 124 may provide a forming space during the welding of the sub bottom plate 123, and the second deformation joint 224 may provide a forming space during the welding of the sub top plate 223; in one embodiment, the alignment of the first protrusion 112 with the first through hole 122 ensures the initial position accuracy of the sub-bottom plate 123, and the alignment of the second protrusion 212 with the second through hole 222 ensures the initial position accuracy of the sub-top plate 223. It should be noted that, taking the floor outer panel 120 as an example, since it is composed of a plurality of sub-floors 123, in the welding of the whole floor outer panel 120, the welding can be performed in a circle-shaped sequence instead of a symmetrical welding, and the shape error or welding deformation of the sub-floors 123 themselves can be compensated by the first deformation joint 124, so that the ineffective rotation of the floor outer panel 120 for following the welding symmetry principle in the welding process is avoided, and the operation efficiency is improved.
The invention also provides a centrifugal fan which comprises the centrifugal fan impeller.
The centrifugal analysis comprises a volute and a centrifugal fan impeller, the centrifugal fan impeller is arranged in the volute, and a motor is connected with and drives the centrifugal fan impeller to rotate. The centrifugal fan impeller is simple to machine, stable in structure and stable in operation in the volute.
In summary, according to the centrifugal fan impeller and the centrifugal fan provided by the present invention, by adjusting the welding position of the centrifugally classified blades 300, and simultaneously separating the bottom plate assembly 100 into the bottom plate inner plate 110 and the bottom plate outer plate 120 and separating the top plate assembly 200 into the top plate inner plate 210 and the top plate outer plate 220, the two ends of the blades 300 in the length direction are at least clamped with the bottom plate inner plate 110 and the top plate inner plate 210, and the two ends of the blades 300 in the length direction are at least welded with the bottom plate outer plate 120 and the top plate outer plate 220, so that the problem that the blades 300 block each other in the welding process is solved. The above arrangement facilitates the welding process of the blade 300 and also improves the position accuracy of the blade 300 to be fixed before welding.
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 equivalent structures or equivalent processes performed by the present invention or directly or indirectly applied to other related technical fields will be covered by the scope of the present invention.
Claims (10)
1. A centrifugal fan impeller comprising:
the bottom plate assembly comprises a bottom plate inner plate and a bottom plate outer plate which are arranged in a laminated manner, and the bottom plate outer plate is connected to the outer side surface of the bottom plate inner plate at least in a welding manner;
the top plate assembly comprises a top plate inner plate and a top plate outer plate which are arranged in a laminated mode, and the top plate outer plate is connected to the outer side surface of the top plate inner plate at least in a welding mode;
a plurality of blades encircle and arrange, blade length direction's both ends penetrate respectively the bottom plate subassembly and the roof subassembly, blade length direction both ends with the bottom plate inner panel and the connected mode of roof inner panel includes the joint at least, blade length direction both ends with the bottom plate planking and the connected mode of roof planking is including the welding at least.
2. The centrifugal fan impeller of claim 1,
a plurality of bottom plate inner plate holes corresponding to the plurality of blades are formed in the bottom plate inner plate, the bottom plate inner plate holes are in shape-consistent fit or shape-interference fit with the blades at the positions of the bottom plate inner plate holes, a plurality of bottom plate outer plate holes corresponding to the plurality of blades are formed in the bottom plate outer plate, and the width direction sizes of the bottom plate outer plate holes are in clearance fit with the thickness direction of the blades at the positions of the bottom plate outer plate holes;
the blade is characterized in that a plurality of top plate inner plate holes corresponding to a plurality of blades are formed in the top plate inner plate, the top plate inner plate holes are in shape-consistent fit or shape-interference fit with the blades at the positions of the top plate inner plate holes, a plurality of top plate outer plate holes corresponding to the blades are formed in the top plate outer plate, and the width direction of each top plate outer plate hole is in clearance fit with the thickness direction of the blades at the positions of the top plate outer plate holes.
3. The centrifugal fan impeller of claim 2 wherein the blade comprises a central region and a bottom attachment region and a top attachment region at each end of the central region in the direction of the length;
the width direction size of the middle area at the position of the bottom connecting area is larger than the width of the bottom connecting area, so that bottom shoulder areas are formed at two sides of the bottom connecting area in the width direction, and the shape of the bottom shoulder areas is matched with that of the inner bottom plate at the corresponding position;
the middle section has a width-directional dimension at the top joint section position larger than the width of the top joint section, so that bottom shoulder sections are formed on both sides of the top joint section in the width direction, the shape of the top shoulder sections matching the top panel inner panel at the corresponding position.
4. The centrifugal fan wheel as claimed in claim 1 wherein, when the blades are attached to the top plate inner plate and the top plate outer plate, the blades are recessed from the surface of the top plate outer plate remote from the top plate inner plate; when the blades are connected with the inner plate of the bottom plate and the outer plate of the bottom plate, the blades sink to the surface of the outer plate of the bottom plate, which is far away from the inner plate of the bottom plate.
5. The centrifugal fan impeller as claimed in claim 1, wherein both end surfaces in the length direction of the blade are formed with undulations.
6. The centrifugal fan impeller as claimed in claim 5, wherein both ends of the blade in the longitudinal direction are roughened.
7. The centrifugal fan impeller as claimed in any one of claims 1 to 6, wherein a plurality of first protruding structures are provided on the inner bottom plate, a plurality of first through holes corresponding to the first protruding structures are provided on the outer bottom plate, and the first protruding structures and the first through holes form alignment structures; the roof plate is characterized in that a plurality of second protruding structures are arranged on the roof plate inner plate, a plurality of second through holes corresponding to the second protruding structures are arranged on the roof plate outer plate, and the second protruding structures and the second through holes form alignment structures.
8. The impeller of claim 7, wherein the plurality of first protruding structures form a plurality of ferrule arrangements centered at the center of the inner bottom plate, and when the first protruding structures and the first through holes form corresponding structures, the first protruding structures are sunken or flush with the surface of the outer bottom plate away from the inner bottom plate; the plurality of second protruding structures form a plurality of ferrule arrangements taking the circle center of the top plate inner plate as the center, and when the second protruding structures and the second through holes form corresponding structures, the second protruding structures sink or are flush with the surface of the top plate outer plate far away from the top plate inner plate.
9. The centrifugal fan impeller as claimed in any one of claims 1 to 6, wherein the outer plate of the base plate is annularly spliced by 2 to 6 independent sub-base plates, and a first deformation joint is arranged between the adjacent sub-base plates; the top plate outer plate is composed of 2-6 independent sub-top plates, and a second deformation joint is arranged between every two adjacent sub-top plates.
10. A centrifugal fan comprising a centrifugal fan impeller according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211177759.8A CN115434946A (en) | 2022-09-27 | 2022-09-27 | Centrifugal fan impeller and centrifugal fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211177759.8A CN115434946A (en) | 2022-09-27 | 2022-09-27 | Centrifugal fan impeller and centrifugal fan |
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| Publication Number | Publication Date |
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| CN115434946A true CN115434946A (en) | 2022-12-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211177759.8A Pending CN115434946A (en) | 2022-09-27 | 2022-09-27 | Centrifugal fan impeller and centrifugal fan |
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| Country | Link |
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| CN (1) | CN115434946A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112268013A (en) * | 2020-11-12 | 2021-01-26 | 上海全颉环境设备有限公司 | Forward-bending centrifugal impeller |
| CN112564370A (en) * | 2019-09-26 | 2021-03-26 | 日本电产株式会社 | Motor and air supply device |
| CN113606632A (en) * | 2021-09-13 | 2021-11-05 | 广东东方麦田工业设计股份有限公司 | Portable desktop cigarette machine |
| CN114696518A (en) * | 2020-12-28 | 2022-07-01 | 江苏莱克智能电器有限公司 | Air blower and heat exchange system |
| CN217481589U (en) * | 2022-02-23 | 2022-09-23 | 芜湖美的智能厨电制造有限公司 | Impeller of centrifugal fan, centrifugal fan and range hood |
-
2022
- 2022-09-27 CN CN202211177759.8A patent/CN115434946A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112564370A (en) * | 2019-09-26 | 2021-03-26 | 日本电产株式会社 | Motor and air supply device |
| CN112268013A (en) * | 2020-11-12 | 2021-01-26 | 上海全颉环境设备有限公司 | Forward-bending centrifugal impeller |
| CN114696518A (en) * | 2020-12-28 | 2022-07-01 | 江苏莱克智能电器有限公司 | Air blower and heat exchange system |
| CN113606632A (en) * | 2021-09-13 | 2021-11-05 | 广东东方麦田工业设计股份有限公司 | Portable desktop cigarette machine |
| CN217481589U (en) * | 2022-02-23 | 2022-09-23 | 芜湖美的智能厨电制造有限公司 | Impeller of centrifugal fan, centrifugal fan and range hood |
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