CN113586471B

CN113586471B - Novel cross-flow fan of multipurpose

Info

Publication number: CN113586471B
Application number: CN202110824601.4A
Authority: CN
Inventors: 谢盼盼; 沈国平; 湛达军; 张媛; 钟志浩
Original assignee: Hangzhou Weiguang Electronic Co Ltd
Current assignee: Hangzhou Weiguang Electronic Co Ltd
Priority date: 2021-07-21
Filing date: 2021-07-21
Publication date: 2023-03-28
Anticipated expiration: 2041-07-21
Also published as: CN113586471A

Abstract

The invention discloses a novel multipurpose cross-flow fan, which solves the problems that the existing cross-flow fan is poor in universality and heat dissipation, an impeller is easy to shift, an air duct is easy to deform, and a fixing structure of a motor shaft and the impeller is unreasonable. The fan includes the casing, and the casing includes left side board, right side board, bounding wall, hyoplastron, forms the wind channel between bounding wall and the hyoplastron, has connected the impeller in the casing, is provided with the motor on the right side board, is provided with a plurality of integrated into one piece's radiator vane on end links around motor rotor respectively, and radiator vane is radial evenly distributed around the terminal surface center, and the outside bending type of bounding wall one side has the reinforcing plate, forms hem transitional coupling between reinforcing plate and the bounding wall, and the hem is the broken line form. The heat dissipation blades are added, so that wind can be uniformly and non-dispersedly blown out to the periphery, and the temperature of a motor winding and an iron core is effectively reduced. The strength of the enclosing plate is improved, the flow field of the fan is optimized, wind can enter more stably and smoothly, the rotating speed of the fan is more stable during high-speed operation, and the surge phenomenon is effectively avoided.

Description

Novel cross-flow fan of multipurpose

Technical Field

The invention relates to the technical field of fans, in particular to a novel multipurpose cross-flow fan.

Background

The cross flow fan has the advantages of simple structure, small volume, large flow and low noise, and can be widely applied to equipment cooling and heat dissipation, fresh air systems, ventilation and ventilation, cold and warm rooms, air-conditioning wall-mounted units, display cabinets, air-cooled refrigerators, cooling fans, vertical air conditioners, warm air blowers, electric fireplaces, air curtains, clothes dryers, embedded ovens and other household appliances.

The existing cross-flow fan has some defects:

1. the conventional cross-flow fan has single use, poor universality and high customization, so that the cross-flow fan has multiple product models and is complicated;

2. the motor has no self-heat dissipation, and the temperature is increased, so that the service life of the product is short;

3. the air duct is easy to deform, and fluid at the air inlet is not smooth, so that the unstable and surging rotation speed of the fan is easy to cause;

4. the fan impeller is limited at one end, and is not limited at the end of the bearing seat, because the motor operates the shaft for a long time and conducts the heat of the motor, the contact part of the rubber/silica gel rubber plug and the shaft becomes soft, the wind wheel is easy to move after operating for a long time, and the blades and the side plates interfere to cause abnormal sound or jamming of the fan, thereby influencing the use;

5. the impeller middle supporting disk is connected with a motor shaft through a rubber plug, the supporting disk directly uses a direct cut surface to install the rubber plug, the structure is only suitable for a fan which is started and stopped frequently at a low rotating speed, when the fan is started frequently or the rotating speed and the torque are high, the cut surface can directly play a shearing role on the rubber plug, the rubber plug can be damaged and fall off, abnormal sound and stalling of the fan are caused, and final equipment fails. Or the metal shaft sleeve flange is fixed on the impeller and connected with the motor shaft, but the fixed water inlet shaft sleeve flange is only used on a fan with high rotating speed and large size, but the cost is high, the fixation is easy to deflect, a larger installation space is needed, and the fixed water inlet shaft sleeve flange is generally used on the fan with special purpose.

Disclosure of Invention

The invention mainly solves the problems that the existing cross-flow fan is poor in universality and heat dissipation, a fan impeller is easy to shift, an air duct is easy to deform, and a fixing structure of a motor shaft and the impeller is unreasonable, and provides the novel multi-purpose cross-flow fan.

The technical problem of the invention is mainly solved by the following technical scheme: the utility model provides a novel cross flow fan of multipurpose, includes the casing, and the casing includes left side board, right side board and is connected bounding wall, the hyoplastron between controlling the curb plate, forms the wind channel between bounding wall and the hyoplastron, is connected with the impeller at the casing internal rotation, is provided with drive impeller pivoted motor on the right side board, and the motor includes stator core, is fixed with stator core on the stator core and rotates and be connected with rotor, its characterized in that: the rotor is characterized in that a plurality of integrally formed radiating blades are arranged on the front end ring and the rear end ring of the rotor respectively, the radiating blades are radially and uniformly distributed around the center of the end face, the side edge of the enclosing plate, which is positioned at the air inlet of the air duct, is bent outwards to form a reinforcing plate, a folded edge transitional connection is formed between the reinforcing plate and the enclosing plate, and the folded edge is in a folded line shape. The invention adds the turbulence heat dissipation blades on the two end rings of the rotor, the heat dissipation blades are formed in one step when the rotor is subjected to die casting, other processes and materials are not added, the aluminum consumption of the end rings is not changed, only the appearance of the end rings is changed, and the performance of the motor is not influenced. Through the addition of the turbulence heat dissipation blades, the blades are optimized through CFD simulation, so that wind is uniformly and non-dispersedly blown out to the periphery, the temperature of a motor winding and an iron core is effectively reduced, and the service life of a product is greatly prolonged. According to the invention, the side edge of the enclosing plate positioned at the air inlet is bent to form the reinforcing plate, the folded edge similar to the reinforcing rib is formed between the reinforcing plate and the enclosing plate, the whole folded edge is in a triangular folded line shape, the strength of the enclosing plate is improved by optimizing the shape of the folded edge, the flow field of the fan can be optimized, the folded edge structure is optimized through CFD simulation, so that air enters the air inlet more stably and smoothly, the rotating speed is more stable when the fan runs at a high speed, and the surge phenomenon is effectively solved.

Preferably, the heat dissipating blade includes a front airfoil surface and a rear airfoil surface extending upward, the front airfoil surface is higher than the rear airfoil surface, an upper airfoil surface inclined downward toward the center of the end ring is formed between the front airfoil surface and the rear airfoil surface, the upper airfoil surface includes a horizontal section and an inclined section, and the horizontal section and the inclined section are connected by a cambered surface in a transition manner. The radiating blades are blades with high front wing surface ends and low rear wing surface ends, the upper wing surface inclines from the front wing surface to the rear wing surface, the upper wing surface comprises a horizontal section and an inclined section which inclines downwards, the horizontal section is in transitional connection with the inclined section through an arc surface, the horizontal section is connected with the upper wing surface, and the inclined section is connected with the rear wing surface. The structure of the radiating blade in the scheme can enable wind to be uniformly and non-dispersedly blown out to the periphery in the rotor rotating process, so that the temperature of a motor winding and an iron core is effectively reduced, and the service life of a product is greatly prolonged.

Preferably, the heat dissipating fins are uniformly arranged along the outer edge of the end ring, and the front airfoil surface is located on the side close to the outer edge of the end ring. The heat dissipation blades are distributed along the outer edge of the end ring and are provided with a plurality of heat dissipation blades, and each heat dissipation blade is positioned on the diameter line of the end ring.

As a preferred scheme, the folded edge is in transition connection with the coaming and the reinforcing plate through a fillet, and the bending angle of the folded edge is 120-170 degrees. Hem and bounding wall, reinforcing plate fillet transitional coupling, meet the process that the hem can be more smooth and easy after wind gets into the air intake, and the hem is the broken line shape, and wind is more steady during the process.

As a preferred scheme, the motor is fixed on the right side plate through a connecting plate, the connecting plate is circular, connecting wings are respectively formed at two radial ends of the connecting plate in a protruding mode, the edges of the connecting plate and the connecting wings are flanged inwards to form reinforcing edges, at least two adjustable mounting holes formed by communicating through holes are formed in the connecting wings, a plurality of fixing holes are symmetrically formed in the radial two sides of the connecting plate where the connecting wings are located, and a plurality of through holes are correspondingly formed in the right side plate. The edge of the connecting plate and the edge of the connecting wing are additionally provided with the reinforcing edges, so that the overall strength of the connecting plate is enhanced, and the connecting plate is less prone to deformation. The adjustable mounting holes are formed in the connecting wings and are at least formed by communicating two through holes, and more through holes can be formed, the through holes are located on the same straight line and are communicated with one another, motor mounting hole positions are added in the adjustable mounting holes, motors of more models can be matched and used, and product types are enriched so that customers can have more choices. The fixed orifices are used for fixing the connecting plate and the side plate, the fixed orifices are provided with a plurality of fixed orifices, the fixed orifices are symmetrically arranged relative to the radial straight line of the connecting wing, and are also symmetrically arranged relative to the straight line of the diameter perpendicular to the straight line, the formed fixed orifices are multi-station fixed orifices, so that no designated direction exists during installation of the mounting plate, the operation is more convenient and faster, and after the connecting plate is installed in place, fasteners such as bolts are connected in the fixed orifices and the through holes to fix the connecting plate on the right side plate.

As an optimal scheme strengthen along being provided with a plurality of calories of feet on the edge, the card foot includes along strengthening along the root that extends forward and connect the joint portion of radially outwards extending at the root front end correspond on the right side board and be provided with a plurality of draw-in grooves, the draw-in groove includes that the axial card goes into the groove and goes into the radial tangential groove of groove formation to one side rotation in the axial card bottom of the groove, joint portion is provided with the card protruding on the surface, is provided with two stuck points at the back of radial tangential groove upper portion right side board. The connecting plate is gone into the draw-in groove and is fixed a position after rotatory through the card foot card in this scheme. Wherein the size of the axial clamping groove is matched with the size of the clamping part, and the clamping part of each clamping groove is formed by rotating towards the same side. When the installation, the card foot joint portion inserts the axial card and goes into the groove earlier, until strengthening along supporting on right side board surface, the radial slot of cutting over to the card foot root, the rotatory right side board back to radial slot of cutting over upper portion of joint portion, the protruding card of card in the joint portion is gone into and is formed the location between two stuck points.

As a preferred scheme, the impeller comprises a left disc, a right disc and blades connected between the left disc and the right disc, the right disc is fixed with a rotating shaft of the motor, an impeller shaft is arranged on the left disc, and the impeller is connected to a left side plate through a bearing seat.

As an optimal scheme, the front end of the motor rotating shaft is fixed on the right disc through a rubber plug, a limiting groove is formed in the position, close to the outer end of the rubber plug, of the motor rotating shaft, a check ring is connected in a clamping mode in the limiting groove and pressed on the outer end of the rubber plug, the bearing block is connected to the left side plate in a clamping mode, a bearing is fixed in the bearing block, the impeller shaft penetrates into the bearing block and is connected with the bearing, a baffle is arranged on one side, away from the impeller, of the bearing block, and the baffle is perpendicular to the impeller shaft. This scheme has carried on spacingly to the impeller both ends, impeller one end sets up the retaining ring through motor shaft and carries on spacingly, impeller other end impeller shaft sets up in the bearing frame, it carries on spacingly to the impeller shaft to be provided with the baffle in the bearing frame, the degree of freedom of impeller has all been restricted at both ends about like this, prevent that the impeller from shifting after the operation, avoided taking place to interfere with the curb plate and cause abnormal sound or the dead problem of card, this scheme does not additionally increase material cost, be used for installing bearing frame waste material that punches a hole on the left side board for use of baffle. The original impeller mounting mode and mounting process are not changed, and the structure of the impeller mounting structure is high in universality and free of influence of temperature, humidity and dust.

As an optimal scheme, the inside bearing housing that holds the bearing that is provided with of bearing frame, first via hole has been seted up to impeller one side to the bearing housing, and the bearing housing is kept away from impeller one side and has been seted up the second via hole, and first via hole and second via hole are linked together with the bearing respectively, are provided with round baffle mounting groove in the second via hole, and the baffle is installed in the baffle mounting groove, and the ring curb plate mounting groove is provided with on the bearing frame outside in the surrounding, and the left side integrated circuit board is connected in the curb plate mounting groove. This scheme middle bearing frame has the through-hole structure of first via hole, bearing chamber, second via hole in proper order for the centre, and the bearing chamber is used for fixing bearing, and the impeller shaft penetrates by first via hole to be connected with the bearing, and the impeller shaft front end is fixed with the baffle towards the second via hole in the second via hole, keeps off before the impeller shaft. The baffle plate has the function of limiting the impeller shaft, and simultaneously, the baffle plate also serves as a support of the bearing seat, so that the load capacity and the service life of the bearing seat are improved.

As a preferred scheme, a square rubber plug mounting hole is formed in the center of the right plate, the side edges of the rubber plug mounting hole are respectively provided with a flanging, the flanging is perpendicular to the right plate, gaps are formed among the flanging, the rubber plug comprises a front end portion, a rear end portion and a hole penetrating portion, the hole penetrating portion is connected between the front end portion and the rear end portion, the shape of the front end portion is larger than that of the rubber plug mounting hole, the front end portion covers the rubber plug mounting hole, the hole penetrating portion penetrates into the rubber plug mounting hole, the rear end portion is square, the rear end portion is clamped in the range surrounded by the flanging, four corners of the rear end portion are respectively provided with supporting legs, and the supporting legs penetrate through the gaps and press the right plate. The right board passes through the plug to be connected with motor shaft, and the plug mounting hole is ordinary through-hole in the middle of traditional left side dish, and the plug is installed in the through-hole, and the plug is direct to contact with the through-hole incision, and its contact is line contact, and when the fan frequently started or the high moment of torsion of rotational speed was big, the incision can directly play the shearing action to the rubber plug, leads to the plug damage to drop for the fan produces abnormal sound, stall. The scheme is that the flanging is added on the edge of the rubber plug mounting hole, the flanging is contacted with the perforation part of the rubber plug after the rubber plug is mounted, the original line contact is changed into the surface contact, the generation of the shearing force is avoided, the rubber plug is not easy to be damaged, and the service life is prolonged. The right side dish after this scheme improvement still adopts original material and technology machine-shaping, only increases turn-ups terrace die mold core in newly-opened mould, does not increase material and cost of labor. The improved right disc can be used for various rotating speeds and frequent starting conditions, the service life of the product is prolonged, the application range of the product is expanded, and the core competitiveness of the product is improved.

Therefore, the invention has the advantages that:

1. the turbulence heat dissipation blades are added on the two end rings of the rotor, the heat dissipation blades are formed in one step during rotor die casting, other processes and materials are not added, the amount of aluminum used by the end rings is not changed, only the appearance of the end rings is changed, and the performance of the motor is not influenced. By adding the turbulence heat dissipation blades, the blades are optimized through CFD simulation, so that wind is uniformly and non-dispersedly blown out to the periphery, the temperature of a motor winding and an iron core is effectively reduced, and the service life of a product is greatly prolonged;

2. the hem that forms similar strengthening rib between reinforcing plate and the bounding wall, the hem is whole for the triangle broken line form, through optimizing the shape of hem, not only improves the intensity of bounding wall, can also optimize the fan flow field, and this hem structure is optimized through the CFD emulation for wind gets into more steady, smooth and easy of air intake, and the rotational speed is more stable when the high-speed operation of fan, effectively solves surge phenomenon.

3. The multipurpose connecting plate is adopted, the shape of the connecting plate is optimized, the strength of the connecting plate is improved, the cost is not increased, motor mounting hole positions are increased, fixing hole positions are optimized, motors with more models can be matched, the universality is stronger, and the product types are enriched so that users have more selectivity.

4. The impeller is limited at two ends, one end of the impeller is limited by the retainer ring arranged on the rotating shaft of the motor, the impeller shaft at the other end of the impeller is arranged in the bearing seat, the baffle plate arranged in the bearing seat limits the impeller shaft, the freedom degree of the impeller is limited at the left end and the right end, the impeller is prevented from shifting after operation, the problem of abnormal sound or blocking caused by interference with the side plate is avoided, the material cost is not additionally increased, and the baffle plate is used for mounting bearing seat punching waste on the left side plate. The original impeller mounting mode and mounting process are not changed, the structure universality is high, and the impeller is not influenced by temperature, humidity and dust.

5. The flanging is added on the edge of the rubber plug mounting hole, the flanging is contacted with the punching part of the rubber plug after the rubber plug is mounted, the original line contact is changed into surface contact, the generation of shearing force is avoided, the rubber plug is not easy to be damaged, and the service life is prolonged. The improved right disc can be used for various rotating speeds and frequent starting working conditions, the service life of the product is prolonged, the application range of the product is expanded, and the core competitiveness of the product is improved.

Drawings

FIG. 1 is a schematic diagram of a first embodiment of the present invention;

FIG. 2 is a schematic diagram of a second embodiment of the present invention;

FIG. 3 is a schematic view of a rotor according to the present invention;

FIG. 4 is a schematic view of a shroud according to the present invention;

FIG. 5 is a schematic view of a construction of the connection plate of the present invention;

FIG. 6 is a schematic view of a right side panel of the present invention;

FIG. 7 is a schematic view of a structure in which one end of an impeller is connected to a rotating shaft of a motor in the present invention;

FIG. 8 is a schematic view of the structure of the impeller of the present invention in which the rotating shaft of the impeller is connected to the bearing seat;

FIG. 9 is a schematic diagram of a right plate according to the present invention;

fig. 10 is a schematic view of the connection structure between the rubber plug and the right plate in the present invention.

1-left side plate 2-right side plate 3-coaming 4-tongue plate 5-impeller 6-motor 7-stator iron core 8-stator magnetic core 9-rotor 10-radiator blade 11-reinforcing plate 12-end ring 13-front wing surface 14-rear wing surface 15-upper wing surface 16-horizontal segment 17-inclined segment 18-hem 19-connecting plate 20-connecting wing 21-reinforcing edge 22-adjustable mounting hole 23-fixing hole 24-reinforcing rib 25-clamping foot 26-root 27-clamping part 28-clamping groove 29-axial clamping groove 30-radial cutting groove 31-clamping protrusion 32-clamping point 33-left disk 34-right disk 35-impeller shaft 36-bearing seat 37-limiting groove 38-motor rotating shaft 39-retaining ring 40-baffle plate 41-bearing cavity 42-first via hole 43-second via hole 44-baffle plate mounting groove 45-side plate mounting groove 46-rubber plug mounting hole 47-flanging 48-gap 49-50-rear end 51-supporting foot 52-front end.

Detailed Description

The technical scheme of the invention is further specifically described by the following embodiments and the accompanying drawings.

The embodiment is as follows:

the multipurpose novel cross-flow fan comprises a casing, wherein the casing comprises a left side plate 33, a right side plate 34, a coaming 3 and a tongue plate 4, the coaming 3 and the tongue plate are connected between the left side plate and the right side plate, and an air duct is formed between the coaming and the tongue plate. An impeller is rotatably connected between the left side plate and the right side plate in the casing, and a motor for driving the impeller to rotate is arranged on the right side plate.

The coaming is arc-shaped, an air duct air inlet is formed at the upper end of the impeller between the upper side of the coaming and the rear side of the tongue plate, and an air duct air outlet is formed at the front end of the impeller between the lower side of the coaming and the front side of the tongue plate. As shown in fig. 4, one side of the enclosing plate, which is located at the air inlet of the air duct, is bent outwards to form a reinforcing plate 11, and a folded edge 18 is formed between the reinforcing plate and the enclosing plate for transitional connection, and the folded edge is in a triangular folded line shape. Through optimizing the shape of hem, not only improve the intensity of bounding wall, can also optimize the fan flow field, this hem structure is optimized through CFD emulation for wind gets into more steady, smooth and easy of air intake, and the rotational speed is more stable when the high-speed operation of fan, effectively solves surge phenomenon.

The impeller 5 comprises a left disc 33, a right disc 34 and a plurality of blades connected between the left and right discs, as shown in fig. 7 and 8, the right disc is fixed with a motor rotating shaft 38, an impeller shaft 35 is arranged on the left disc, and the impeller is connected on a left side plate through a bearing seat 36. A plurality of middle discs are further arranged between the left disc and the right disc, and the blades penetrate through the middle discs to form support fixation with the middle discs. The motor rotating shaft is fixed with the right disc through a rubber plug 49, as shown in fig. 9, a square rubber plug mounting hole 46 is formed in the center of the right disc 34, flanges 47 are respectively arranged on four sides of the rubber plug mounting hole, the flanges are perpendicular to the surface of the right plate, and gaps 48 are formed between the flanges. As shown in fig. 7 and 10, the rubber plug 49 includes a front end portion 52, a rear end portion 50 and a perforated portion, the perforated portion is connected between the front end portion and the rear end portion, the front end portion is circular, the shape of the front end portion is larger than that of the rubber plug mounting hole, the front end portion covers the rubber plug mounting hole, the perforated portion penetrates into the rubber plug mounting hole, the rear end portion is square, the rear end portion is clamped in a range surrounded by a flanging, supporting legs 51 are respectively arranged at four corners of the rear end portion, the supporting legs penetrate through gaps and press on a right plate, the rubber plug is integrally clamped on the right plate, and a rotating shaft of a motor is inserted into the rubber plug and fixed with the rubber plug. The flanging is added on the edge of the rubber plug mounting hole in the structure, the flanging is contacted with the punching part of the rubber plug after the rubber plug is mounted, the original line contact is changed into surface contact, the generation of shearing force is avoided, the rubber plug is not easy to be damaged, and the service life is prolonged. The improved right disc is processed and formed by adopting the original materials and process, only a flanging male die core is added in a newly opened die, and the material cost and the labor cost are not increased. The improved right disc can be used for various rotating speeds and frequent starting conditions, the service life of the product is prolonged, the application range of the product is expanded, and the core competitiveness of the product is improved.

A limiting groove 37 is arranged on the motor rotating shaft and close to the outer end of the rubber plug, and a check ring 39 is clamped in the limiting groove and pressed on the outer end of the rubber plug. This retaining ring is C type structure, has a card entry, circles in the retaining ring and is provided with two elastic tanks for the retaining ring is more flexible, can carry out the dismouting with the spacing groove smoothly. The right side of the impeller is limited by arranging a check ring.

As shown in fig. 8, the bearing seat 36 is mounted on the left side plate 1, specifically, a circle of side plate mounting groove 45 is circumferentially arranged on the outer side of the bearing seat, and the left side plate is clamped in the side plate mounting groove. The bearing seat is internally provided with a bearing cavity 41 for accommodating a bearing, the bearing is fixed in the bearing cavity, a first via hole 42 is formed in the bearing cavity towards one side of the impeller, a second via hole 43 is formed in one side, away from the impeller, of the bearing cavity, the first via hole and the second via hole are respectively communicated with the bearing, the impeller shaft penetrates through the first via hole and then is connected with the bearing, the front end of the impeller shaft faces the second via hole, a circle of baffle mounting groove 44 is formed in the second via hole, a baffle 40 is installed in the baffle mounting groove, and the baffle is perpendicular to the impeller shaft and limits the position of the impeller shaft.

In this embodiment, it is spacing all to have carried out impeller both ends, wherein impeller one end sets up the retaining ring through motor shaft and carries on spacingly, the impeller other end sets up the impeller shaft in the bearing frame, it is spacing to carry out the impeller shaft to be provided with the baffle in the bearing frame, both ends have all restricted the degree of freedom of impeller about like this, prevent that the impeller from shifting after the operation, avoided taking place to interfere with the curb plate and cause abnormal sound or card dead problem, simultaneously also additionally increase material cost, wherein the baffle chooses for use to install bearing frame waste material that punches a hole on the left side board. The original impeller mounting mode and mounting process are not changed, the structure universality is high, and the impeller is not influenced by temperature, humidity and dust.

The motor 6 is fixed on the right side plate through a connecting plate 19, as shown in fig. 5, the connecting plate is circular, connecting wings 20 are formed at two radial ends of the connecting plate in a protruding mode respectively, edges of the connecting plate and the connecting wings are flanged inwards to form reinforcing edges 21, two adjustable mounting holes 22 formed by perforation and communication are formed in the connecting wings, two fixing holes 23 are formed in two sides, located on the connecting plate, of a radial straight line where the connecting wings are located respectively, two fixing holes are formed in one side of the connecting plate, two fixing holes are formed in the other side of the connecting plate, the two fixing holes are arranged in a symmetrical mode with the radial straight line where the connecting wings are located pairwise and oppositely, as shown in fig. 6, four through holes are formed in the right side plate correspondingly to the fixing holes, two reinforcing ribs 24 are arranged on the surface of the connecting plate in a protruding mode, the reinforcing ribs are in a zigzag mode, and are symmetrically arranged relative to the center. Strengthen along strengthening the connecting plate bulk strength with the strengthening rib for the connecting plate is more difficult for taking place to warp. Strengthen along 21 edge on the symmetric distribution be provided with four card feet 25, the card foot includes along strengthening along root 26 that extends forward and connect the joint portion 27 that extends outward in root front end radial direction, and the card foot is whole to be L shape. A plurality of clamping grooves 28 are correspondingly arranged on the right side plate, each clamping groove comprises an axial clamping groove 29 and a radial cutting groove 30 which is formed by rotating towards one side at the bottom of the axial clamping groove, a clamping protrusion 31 is arranged on the surface of the clamping portion, and two clamping points 32 are arranged on the back of the right side plate at the upper part of the radial cutting groove. When the connecting plate is installed, the clamping foot clamping portion is inserted into the axial clamping groove firstly, until the reinforcing edge is abutted to the surface of the right side plate, the connecting plate is rotated, the clamping foot root portion is rotated into the radial cut-in groove, the clamping portion is rotated to the back face of the right side plate on the upper portion of the radial cut-in groove, and the clamping convex card in the clamping portion is clamped between the two clamping points to form positioning. At the moment, the hole position of the fixing hole on the connecting plate is aligned with the hole position of the through hole on the right side plate, the bolt penetrates through the fixing hole and the through hole to be screwed and fixed, and the connecting plate is fixed with the right side plate. The motor front end cover is arranged on the connecting plate and provided with two fixing columns, the two fixing columns are respectively aligned to the adjustable mounting holes, the other ends of the fixing columns are propped against one side of the motor, the motor rear end cover is correspondingly arranged on the other side of the motor, and the bolt is fixedly connected with the connecting wing through the fixing columns at the motor rear end cover and the motor front end and the rear of the adjustable mounting holes to integrally fix the motor on the connecting plate. The adjustable mounting holes are formed in the connecting plate and are formed by communicating two through holes, more through holes can be formed, the through holes are located on the same straight line and communicated with one another, motor mounting hole positions are added in the adjustable mounting holes, motors of more models can be matched and used, and product types are enriched so that clients can select more types of motors. The fixing holes are arranged symmetrically relative to the radial straight line where the connecting wings are located and are also arranged symmetrically relative to the straight line where the diameter perpendicular to the straight line is located, and the formed fixing holes are multi-station fixing holes, so that the mounting plate is free of designated directions during mounting, and the mounting plate is convenient and rapid to operate.

The motor includes stator core 7, stator core is last to be fixed with stator core 8 and to rotate and be connected with rotor 9, wherein stator core one end has square notch, the rotor sets up the position near the square notch bottom on stator core, the stator core has been set up between direction breach both sides, leave out certain space formation square hole between stator core and the rotor, be provided with the skeleton around it on stator core, the winding has the winding on the skeleton, there is the glue shell at the outside lock of skeleton, it has glue to pour into in the glue shell, seal the winding, the protection function that soaks has, and can be able to bear or endure high and low temperature, winding heat dispersion is good. The rotor is fixedly connected with the motor rotating shaft, as shown in fig. 3, six integrally formed radiating blades 10 are respectively arranged on front and rear end rings 12 of the rotor, the radiating blades are radially and uniformly distributed around the center of the end face and uniformly arranged along the outer edges of the end rings, and the radiating blades are respectively spaced at an angle of 60 degrees. The cooling fin 10 comprises an upwardly extending front airfoil surface 13, which is higher than the rear airfoil surface, and an upper airfoil surface 15, which is inclined downwards towards the centre of the end ring, is formed between the front airfoil surface, which is located on the side towards the outer edge of the end ring, and the rear airfoil surface 14, which is located on the side towards the centre of the proximal ring. The upper wing surface comprises a horizontal section 16 and an inclined section 17 which are in transition connection through an arc surface. The turbulence heat dissipation blades are added on the two end rings of the rotor, the heat dissipation blades are formed in one step during rotor die casting, other processes and materials are not added, the amount of aluminum used by the end rings is not changed, only the appearance of the end rings is changed, and the performance of the motor is not influenced. Through increasing the turbulence radiating blade, the blade is optimized through CFD emulation for wind is evenly not dispersed blows off to around, has effectively reduced motor winding and iron core temperature, has greatly improved product life.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.

Although the terms left side plate, right side plate, shroud, tongue plate, impeller, etc. are used more often herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed as being without limitation to any additional limitations that may be imposed by the spirit of the present invention.

Claims

1. The utility model provides a novel cross flow fan of multipurpose, includes the casing, and the casing includes left side board, right side board and is connected bounding wall, the hyoplastron between controlling the curb plate, forms the wind channel between bounding wall and the hyoplastron, is connected with the impeller at the casing internal rotation, is provided with drive impeller pivoted motor on the right side board, and the motor includes stator core, is fixed with stator core on the stator core and rotates and be connected with rotor, its characterized in that: a plurality of integrally formed radiating blades (10) are respectively arranged on the front end ring and the rear end ring of the rotor (9), the radiating blades are uniformly distributed in a radial shape around the center of the end face, one side of the coaming (3) positioned at the air inlet of the air duct is bent outwards to form a reinforcing plate (11), a folded edge (18) is formed between the reinforcing plate and the coaming and is in transitional connection with the reinforcing plate, and the folded edge is in a folded line shape; the motor (6) is fixed on the right side plate through a connecting plate (19), the connecting plate is circular, connecting wings (20) are formed at two same radial ends of the connecting plate in a protruding mode respectively, the edges of the connecting plate and the connecting wings are flanged inwards to form reinforcing edges (21), at least two adjustable mounting holes (22) formed by perforation communication are formed in the connecting wings, a plurality of fixing holes (23) are formed in the connecting plate in a radial bilateral symmetry mode in the positions of the connecting wings, and a plurality of through holes are correspondingly formed in the right side plate.

2. A novel cross-flow fan of multipurpose type according to claim 1, characterized in that the cooling fin (10) comprises a front wing surface (13) and a rear wing surface (14) extending upwards, the front wing surface is higher than the rear wing surface, an upper wing surface (15) inclining downwards towards the center of the end ring is formed between the front wing surface and the rear wing surface, the upper wing surface comprises a horizontal section (16) and an inclined section (17), and the horizontal section and the inclined section are connected by a cambered surface.

3. A new cross-flow fan of multipurpose type according to claim 2, characterized in that said cooling fins (10) are uniformly arranged along the outer edge of the end ring, and the front airfoil surface is located on the side close to the outer edge of the end ring.

4. The novel cross-flow fan of claim 1, wherein the folded edge (18) is connected with the surrounding plate and the reinforcing plate through fillet transition, and the angle of folding the folded edge is 120-170 degrees.

5. The novel cross-flow fan of claim 1, characterized in that a plurality of clamping feet (25) are arranged on the edge of the reinforcing edge (21), each clamping foot comprises a root (26) extending forwards along the reinforcing edge and a clamping portion (27) connected with the front end of the root and extending outwards in the radial direction, a plurality of clamping grooves (28) are correspondingly arranged on the right side plate, each clamping groove comprises an axial clamping groove (29) and a radial cutting groove (30) formed by rotating towards one side at the bottom of the axial clamping groove, a clamping protrusion (31) is arranged on the surface of each clamping portion, and two clamping points (32) are arranged on the back of the right side plate at the upper part of the radial cutting groove.

6. The novel cross-flow fan of claim 1, characterized in that the impeller (5) comprises a left disk (33), a right disk (34) and blades connected between the left and right disks, the right disk is fixed with a motor rotating shaft (38), the left disk is provided with an impeller shaft (35), and the impeller is connected to the left side plate through a bearing seat (36).

7. The novel cross-flow fan of a multipurpose of claim 6, characterized in that the front end of the motor shaft is fixed on the right disc (34) through a rubber plug, a limiting groove (37) is arranged on the motor shaft near the outer end of the rubber plug, a retaining ring (39) is clamped in the limiting groove and pressed on the outer end of the rubber plug, the bearing seat (36) is clamped on the left side plate (1), a bearing is fixed in the bearing seat, the impeller shaft penetrates into the bearing seat and is connected with the bearing, a baffle (40) is arranged on one side of the bearing seat far away from the impeller, and the baffle is perpendicular to the impeller shaft.

8. The novel cross-flow fan of claim 7, characterized in that a bearing cavity (41) for accommodating a bearing is arranged inside the bearing seat (36), a first through hole (42) is formed in a side of the bearing cavity facing the impeller, a second through hole (43) is formed in a side of the bearing cavity away from the impeller, the first through hole and the second through hole are respectively communicated with the bearing, a circle of baffle installation groove (44) is formed in the second through hole, the baffle is installed in the baffle installation groove, a circle of side plate installation groove (45) is formed around the outer side of the bearing seat, and the left side plate is clamped in the side plate installation groove.

9. The novel cross-flow fan of a multipurpose of claim 7 or 8, characterized in that a square rubber plug mounting hole (46) is formed in the center of the right plate (34), the sides of the rubber plug mounting hole are respectively provided with a flange (47), the flanges are perpendicular to the right side plate, a gap (48) is formed between each flange, the rubber plug (49) comprises a front end part, a rear end part (50) and a perforation part, the perforation part is connected between the front end part and the rear end part, the shape of the front end part is larger than that of the rubber plug mounting hole, the front end part covers the rubber plug mounting hole, the perforation part penetrates into the rubber plug mounting hole, the rear end part is square, the rear end part is clamped in the range surrounded by the flanges, four corners of the rear end part are respectively provided with supporting legs (51), and the supporting legs penetrate through the gap and press on the right side plate.