CN2186319Y

CN2186319Y - Flow-over air feeder

Info

Publication number: CN2186319Y
Application number: CN 94207342
Authority: CN
Inventors: 殷久良
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-02-28
Filing date: 1994-02-28
Publication date: 1994-12-28
Anticipated expiration: 2004-02-28

Abstract

The utility model relates to a cross flow type air feeder used for air curtains, ventilating devices and air conditioners. The utility model mainly comprises a casing with an air inlet and an air outlet, a motor inside the casing, and a blowing impeller connected with the motor. The utility model is characterized in that the motor is an external rotor type motor whose crankshaft is fixedly installed, and the driven connection of the motor and the impeller is implemented through the disposable connection matching parts. The utility model has the advantages of favorable performance, small size, compact structure, easy installation, and easy production. The multistage speed regulation or the stepless speed regulation can be realized conveniently.

Description

Flow-over air feeder

The utility model relates to a kind of cross-flow type gas fan that is used for air curtain, ventilation and air-conditioning.

The air curtain and office, dwelling house, the ventilation in kitchen and the gas fan of air-conditioning that are used for refrigerated warehouse door, air-conditioned room door at present all adopt the cross-flow type gas fan.This cross-flow type gas fan generally all adopts medium-sized inner-rotor type motor, motor all is to adopt it to stretch out axle head to cooperate connecting mode with the hub disk axis hole with the connection of wind pushing impeller, assembling difficulty like this and the difficult concentricity of adjusting the impeller two ends, make troubles for manufacturing and maintenance, in addition, because this plain edition motor has the inner-rotor type formula, not only the motor axial dimension is big, so that the blower fan volume is bigger, and speed change difficulty or slewing range are less, thereby make the performance variation scope of blower fan narrower; Figure 17 illustrates a kind of cross-flow fan of this structure of typical prior art, is provided with two impeller 5A and 5B and the inner rotor motor 2A between them in this example.

The purpose of this utility model is the above-mentioned shortcoming that overcomes the cross-flow type gas fan of existing structure, provides that a kind of volume is little, compact structure, manufacturing is easy to maintenance and Applicable scope is bigger a kind of cross-flow fan.

Cross-flow type gas fan of the present utility model mainly comprises: one is provided with the casing into and out of the air port; One motor that in casing, axially is provided with; One is arranged on the impeller that connects with motor coaxial line ground by the one end in the casing, is bearing in the end cap bearing of the casing the other end its other end coaxial line; And be located at filter screen on the intake grill; Be characterized in, described motor is the motor of the hard-wired external rotor pattern of a kind of arbor, the transmission joint of it and described impeller is to realize by a soft coupling, and described soft coupling comprises a pair of coupling of scarf mutually that is located at respectively on motor and the impeller opposite end.

Cross-flow type gas fan of the present utility model, its characteristics also are, one of described coupling is provided with circular axial reentrant part and at least two circumferential uniform grooves along reentrant part, another coupling, its external diameter equals the female portion internal diameter and is provided with at least two corresponding to described groove and identical with its shape projection on its circumference, so that the mutual inserting of described two couplings; Described soft coupling can be arranged to: a coupling wherein is provided with at least two uniform caulking grooves at the periphery of one end, another coupling is treated the uniform vertically embedding tooth that is convexly equipped with at least two corresponding to described caulking groove and the circumference that equates with its number on the opposing end faces of scarf at it, so that the mutual scarf of described two plate-like couplings; Described soft coupling also can be arranged to: wherein a connecting piece is one with impeller the end face wheel disc of one to be installed, at uniform a plurality of pin-and-holes on the circle of the certain radius of taking turns disk center, another coupling is an end face of the rotational shell of outer rotor motor, axially stretch out in uniform way thereon corresponding to each pin-and-hole and a plurality of pins of equating with the pin-and-hole number, so that it directly inserts each relative pin-and-hole; Described impeller can be arranged to single-unit or more piece; Described impeller also can be provided with a wheel shaft reinforced structure with connecting of motor, and it comprises: be arranged on the supercentral projection of end face of rotational shell of outer rotor motor or recessed; With the supporting sleeve or the supporting axle of the lengthening that extends vertically of impeller coaxial line, so that be inserted in or insert in described projection or recessed; The blade of described impeller has the airfoil cross section of circular arc plate tee section or preceding marginal zone dome arc; Described inlets and putlets of ventilation is arranged to mutually every 90 ° or 180 ° of settings; Described soft coupling and impeller blade adopt engineering plastics one-step mould or injection molded to make respectively; Described filter screen is made by nonwoven cloth material.

This cross-flow type gas fan of the present utility model has following advantage: owing to adopt external-rotor motor, its axial dimension is little, therefore can make the shorten length of complete machine; The coiling of rotor coil is embedded easily, is convenient to realize that level or stepless speed regulation are arranged, and can be fit to user's request and select rational rotating speed to obtain best using effect and energy saving; This external rotor type.The stator that props up machine (as ceiling-fan motor) is that motor shaft is to fix with the chassis end panel, and an end of rotor (inner rotary part) is to adopt soft coupling device with connecting of hub disk end face, make easy accessibility like this, be easy to adjust the concentricity at impeller two ends again, avoid impeller and the caused flexural stress of motor rigid connection simultaneously, make running steadily, noise reduces and improve working life; Because soft coupling device is made up of a pair of inside and outside coupling scarf, therefore be installed on the end face of outer rotor motor or impeller convertibly; Adopt leading edge to have the wing blades of dome arc, not only improved the efficient of gas fan, and increased the integral rigidity of impeller, the vibration when reducing to turn round; Because flexible connection spare and impeller blade all can adopt plastics one-step mould or molding and forming to make, so manufacturing process is simple.

Now further specify characteristics of the present utility model and purpose by specific embodiment and accompanying drawing thereof.

Fig. 1 is an embodiment's of a cross-flow fan of the present utility model general assembly drawing;

Fig. 2 is the sectional view along A-A line among Fig. 1;

Fig. 3 is the connection schematic representation of the castellated soft coupling in a kind of plane of the present utility model;

Fig. 4 is the plane view of the coupling of one of castellated soft coupling in plane shown in Fig. 3;

Fig. 5 is the sectional view along B-B line among Fig. 4;

Fig. 6 is the plane view with another coupling of the coupling scarf shown in Fig. 4,5;

Fig. 7 is the sectional view along C-C line among Fig. 6;

Fig. 8 is the connection schematic representation of the soft coupling of another kind of plug-in type of the present utility model;

Fig. 9 is the plane view of the coupling of one of soft coupling of plug-in type shown in Fig. 8;

Figure 10 is the sectional view along D-D line among Fig. 9;

Figure 11 is and Fig. 9 the plane view of another coupling of the coupling inserting shown in 10;

Figure 12 is the sectional view along E-E line among Figure 11;

Figure 13 is the schematic representation of another soft coupling of the present utility model;

Figure 14 is the cross-sectional view of the impeller blade of a kind of circular arc plate shape of the present utility model;

Figure 15 is the cross-sectional view of a kind of airfoil impeller blade of the present utility model;

Figure 16 is an another embodiment's of the present utility model sectional elevation, the 180 ° of layouts of being separated by into and out of the air port shown in the figure;

Figure 17 is the structural representation of a kind of cross-flow fan of prior art.

Fig. 1 and 2 is depicted as an embodiment of the present utility model, and it comprises: a casing 1, and it has the intake grill 7 and the exhaust outlet 8 that extend vertically that is provided with on 90 ° the casing two frame faces of being separated by of casing; One outer rotor motor 2 that in casing 1, is provided with vertically in its left end, it comprise by an external part 9 be installed on the casing 1 left end wall as the arbor of stator with as the rotatable shell of rotor, described stator arbor and rotor case are embedded with stator coil and rotor coil (not shown) respectively; One be arranged in the casing 1 by its left end and the connection of described motor 2 coaxial line ground cylindric impeller 4 its right-hand members by the projecting shaft coaxial line be bearing in the bearing 5 on the casing right end cap, its radial surface set a plurality of blades 5 of extension vertically; The even part 3 of one soft connection comprises on a pair of shell right side that is located at motor 2 respectively and plate-like connecting piece 3a, the 3b of the mutual scarf on the left side of impeller 4, connects in order to the transmission that realizes impeller and motor; And be located at filter screen 6 on the face frame of intake grill 7.

Fig. 3 is to Figure 7 shows that a kind of flexible connection idol part with the castellated structure in plane of the present utility model, it comprises the plate-like connecting piece 3b and the 3a of two mutual scarves, connecting piece 3b wherein is on one end 11, the place is provided with two caulking grooves 10 symmetrically at diameter two ends, connecting piece 3a axially stretches out two embedding teeth 13 corresponding to caulking groove 10 on itself and end face 11 opposing end faces 12, though the groove 10 and the embedding tooth 13 of two mutual scarves only are shown among the figure, groove 10 and embedding tooth 13 more than three can be uniformly distributed along the circumference on plate-like connecting piece opposing end surface.

Fig. 8 to 12 illustrates the flexible connection idol part of another kind of inserting formula of the present utility model, it comprises the plate-like connecting piece 3B and the 3A of two mutual insertings, connecting piece 3B wherein is provided with circular axial reentrant part 14 and along circumferential alternate 90 ° of uniform cylindrical groove of reentrant part 14, Pei Dui connecting piece 3A with it, its external diameter equals the internal diameter of this reentrant part 14, the projection of uniform identical cylindricality corresponding to groove 15 on its circumference.The number of the cylindrical groove of described circumferential distribution can be two, more than three or five, looks concrete use condition and determine.

Be the another kind of structural type of flexible connection idol part of the present utility model as shown in figure 13, a plate-like connecting piece 3C wherein one is located at the wheel disc on the left end of impeller 4, leave uniform a plurality of pin-and-holes on the circle of center certain radius on it, another connecting piece 3D forms on the right-hand member of motor housing, is axially stretching out the pin 16 that the number of corresponding scarf in described each pin-and-hole equates on its end face.

Described impeller can be arranged to single-unit or more piece according to product requirement, for long more piece impeller, as shown in figure 13, also can be provided with a wheel shaft and strengthen structure, it comprises: be arranged on the supercentral projection 17 of outer rotor motor outer shell end and be inserted in a lengthening supporting sleeve 18 of described projection with axially extended its left ends of impeller 4 coaxial lines, its the other end and impeller right-hand member are connected and fixed (not shown), maybe can be arranged to recessed 17 ' in the center of described projection 17 groove is set to form) and insert described recessed 17 ' a lengthening supporting axle 19.

Figure 14 and 15 illustrates two kinds of blades that are embedded at the different types on the impeller; Blade as shown in figure 14 has the circular arc plate tee section, and Figure 15 shows that a kind of airfoil cross section of preceding marginal zone dome arc 20.

In addition, cross-flow type gas fan of the present utility model as shown in figure 16 also can be according to using needs to be arranged to into and out of the air port mutually every 180 °; Soft connecting piece of the present utility model and impeller blade can adopt engineering plastics one-step mould or injection molded to make respectively; Described filter screen can be made by nonwoven cloth material.

Claims

1, a kind of cross-flow type gas fan, it comprises: one is provided with the casing into and out of the air port; One motor that in casing, axially is provided with; One is arranged on the impeller that connects with motor coaxial line ground by the one end in the casing, in the end-cover axle that is bearing in the casing the other end is got its other end coaxial line; And be located at filter screen on the intake grill; It is characterized in that, described motor is the motor of the external rotor pattern of the fixed installation of a kind of arbor, the transmission joint of it and described impeller is to realize by a soft coupling, and described soft coupling comprises a pair of coupling of scarf mutually that is located at respectively on motor and the impeller opposite end.

2, cross-flow type gas fan as claimed in claim 1, it is characterized in that, one of described coupling is provided with circular axial reentrant part and at least two circumferential uniform grooves along reentrant part, another coupling, its external diameter equals the female portion internal diameter and is provided with at least two corresponding to described groove and the projection identical with its shape on its circumference, so that the mutual inserting of described two couplings.

3, cross-flow type gas fan as claimed in claim 1, it is characterized in that, one of described coupling is provided with at least two uniform caulking grooves at the periphery of one end, another coupling is treated the uniform vertically embedding tooth that is convexly equipped with at least two corresponding to described caulking groove and the circumference that equates with its number on the opposing end surface of scarf at it, so that the mutual scarf of described two couplings.

4, cross-flow type gas fan as claimed in claim 1, it is characterized in that, one of described coupling is one with impeller the end face wheel disc of one to be installed, at uniform a plurality of pin-and-holes on the circle of the certain radius of taking turns disk center, another coupling is an end face of the rotational shell of outer rotor motor, axially stretch out in uniform way thereon corresponding to each pin-and-hole and a plurality of pins of equating with the pin-and-hole number, so that it directly inserts each relative pin-and-hole.

5, cross-flow type gas fan as claimed in claim 1 is characterized in that, described impeller can be arranged to single-unit.

6, cross-flow type gas fan as claimed in claim 1 is characterized in that, described impeller can be arranged to more piece; Impeller also is provided with a wheel shaft reinforced structure with connecting of motor, and it comprises: the supercentral projection of end face of the rotational shell of outer rotor motor or recessed; Be located at axially extended supporting sleeve or the supporting axle that is inserted in or inserts lengthening in described projection or recessed on the impeller middle spindle line.

7, cross-flow type gas fan as claimed in claim 1 is characterized in that, the blade of described impeller has the circular arc plate tee section.

8, cross-flow type gas fan as claimed in claim 1 is characterized in that, the blade of described impeller has the airfoil cross section of preceding marginal zone dome arc.

9, cross-flow type gas fan as claimed in claim 1 is characterized in that, described into and out of the air port mutually every 90 ° of layouts.

10, cross-flow type gas fan as claimed in claim 1 is characterized in that, described into and out of the air port mutually every 180 ° of layouts.

11, cross-flow type gas fan as claimed in claim 1 is characterized in that, one of described at least soft coupling coupling adopts that engineering plastics are once molding formed to be made.

As claim 1 or 8 described cross-flow type gas fans, it is characterized in that 12, the blade of described impeller adopts the engineering plastics single injection-molded to make.

13, cross-flow type gas fan as claimed in claim 1 is characterized in that, described filter screen is made by nonwoven cloth material.