CN201972972U

CN201972972U - Bladeless fan device

Info

Publication number: CN201972972U
Application number: CN2010206854370U
Authority: CN
Inventors: 任文华
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-12-28
Filing date: 2010-12-28
Publication date: 2011-09-14
Anticipated expiration: 2020-12-28

Abstract

A bladeless fan device relates to a fan device, and is characterized by comprising a spray nozzle (2) and a component used for generating airflow flowing through the spray nozzle. The spray nozzle comprises an inner channel (3), an exhaust opening (4), a flow guiding wall (11) and a spacing wall (12), the spacing wall is arranged between the exhaust opening and the flow guiding wall, and the exhaust opening and the flow guiding wall are spaced at a certain distance (D) in a direction perpendicular to an axis (X). The bladeless fan device has the advantages of low noise, high efficiency and the like.

Description

No blade fan device

Technical field

The utility model relates to a kind of fan assembly.

Background technique

The Chinese patent application that on May 6th, 2009, publication number was CN 101424279A (application number: 200810177844.8) disclose a kind of no blade fan device that is used to produce air stream, described fan assembly comprises nozzle and the member that is used to produce by the air-flow of described nozzle, described nozzle comprises the inner passage, be used to receive from the relief opening of the air-flow of described inner passage and the coanda surface that is close to described relief opening location, described relief opening is set to steering flow and flows through described coanda surface, described nozzle limits an opening, and described fan assembly air outside is entrainmented from the air-flow that relief opening sprayed by this opening.

This kind fan assembly is close to the coanda Surface runoff of next-door neighbour's relief opening location from the quick air-flow that relief opening sprayed, or inject directly on the described coanda surface, violent rubbing action between the air-flow of its rapid movement and the described coanda surface not only causes the energy loss of the air-flow that is sprayed, and produces very big noise.

Summary of the invention

The utility model aims to provide a kind of improved fan assembly to overcome above-mentioned defective of the prior art.The purpose of this utility model is will provide-kind of noise is low, efficient is high no blade fan device.

In order to achieve the above object, the technical solution adopted in the utility model is: the no blade fan device that is used to produce air stream, described fan assembly comprises: nozzle and the member that is used to produce by the air-flow of described nozzle, described nozzle comprises the inner passage that is used to receive air-flow, be used to receive relief opening from the air-flow of described inner passage, be used for the training wall of steering flow and the spacing wall that is used to locate, wherein, described spacing wall is arranged between described relief opening and the described training wall, makes described relief opening and described training wall in the certain spacing of being separated by perpendicular to the direction of axis.

Described nozzle can not limit opening, described relief opening can be arranged on nozzle around on the wall, entrainmented by the air-flow that relief opening sprayed of wall around be positioned at from described fan assembly air outside; Described nozzle can limit at least one opening, is entrainmented from the air-flow that relief opening sprayed by described opening from described fan assembly air outside.

Described relief opening and described training wall in the spacing of being separated by perpendicular to the direction of described axis usually between 1 millimeter to 15 millimeters, preferably between 3 millimeters to 10 millimeters.

The Way out of described relief opening and the angle of described axial direction are usually between 0 degree is spent to 30, preferably between 0 degree is spent to 20.

Described relief opening is generally slot-shaped relief opening, described relief opening at the width in its outlet port usually between 1 millimeter to 10 millimeters, preferably between 1 millimeter to 6 millimeters.

Along on the cross section of described axis, described training wall can be one section curve, also can be one section straight line, the angle of described straight line and described axis usually at 0 degree between 20 degree.

Described nozzle along the size of described axial direction usually between 50 millimeters to 350 millimeters, preferably between 60 millimeters to 250 millimeters.

Described training wall along the size of described axial direction usually between 50 millimeters to 300 millimeters, preferably between 50 millimeters to 150 millimeters.

Described member can comprise AC induction motor, also can comprise dc brushless motor.

The utlity model has following good effect:

Because the utility model is not close to the coanda surface of relief opening location, the quick air-flow that sprays from relief opening can not take place because and the violent rubbing action between next-door neighbour's the coanda surface cause energy loss and the very big noise of generation.The utility model is provided with the spacing wall setting between relief opening and training wall, make relief opening and training wall in the certain spacing of being separated by perpendicular to the direction of axis, like this from air-flow that relief opening sprayed, not being close to training wall at its air-flow of incipient stage flows, the air-flow in this stage has the feature of free jet, can not produce very big noise and energy loss; In follow-up phase, the air-flow that air-flow that is sprayed and quilt are entrainmented is because the existence of training wall is just mobile near training wall gradually.Therefore, the utility model greatly reduces the noise that is produced and has reduced frictional loss.

Description of drawings

Fig. 1 is a no blade fan schematic representation of apparatus of the present utility model;

Fig. 2 is a no blade fan device shown in Figure 1 generalized section along axis;

Fig. 3 is the partial cutaway schematic along axis of the amplification of no blade fan device shown in Figure 1;

Fig. 4 is another embodiment's of the no blade fan device of the present utility model generalized section along axis.

Embodiment

Fig. 1 is a no blade fan schematic representation of apparatus of the present utility model.As seen from the figure, the utility model comprises: pedestal 1 and the nozzle 2 that is installed in the circle on the pedestal 1, and referring to figs. 2 and 3, in pedestal 1, be provided with the member that is used to produce by the air-flow of nozzle 2, described member comprises motor cabinet 8, motor 6 and the impeller 7 that is fixed on the motor rotation axis, motor 6 is fixed on the fixed block 9, fixed block 9 is fixing with motor cabinet 8, nozzle 2 comprises the inner passage 3 that is used to receive air-flow, be used to receive the relief opening 4 of air-flow, be used for the training wall 11 of steering flow and the spacing wall 12 that is used to locate, wherein, spacing wall 12 is arranged between relief opening 4 and the training wall 11, make relief opening 4 and training wall 12 at the certain spacing D of being separated by perpendicular to the direction of axis X, in the present embodiment, space D is 6 millimeters, and nozzle 2 defines an opening 5.

When this kind fan assembly uses, it is positioned at the member operation work of the generation air-flow of pedestal 1, air can be drawn into from the intake grill 10 of the outer casing underpart that is positioned at pedestal 1, send in the inner passage 3 of nozzle 2 through after boosting, and be deflated mouthfuls 4 ejections, the streamline 13 of the air-flow from Fig. 2 as can be seen, air-flow is from the incipient stage of relief opening 4 ejections, its air-flow is not close to training wall 11 and is flowed, the air-flow in this stage has the feature of free jet, constantly entrainment its ambient air and make air-flow obtain amplifying, and noise that produces and the mobile energy that is lost are all very little; In the follow-up phase of gas flow downstream, the air-flow that air-flow that is sprayed and quilt are entrainmented is because the existence of training wall is just mobile near training wall gradually; Air-flow that is sprayed from relief opening 4 and the air-flow that entrainmented flow process flow out opening 5 together like this, to produce the total air flow that penetrates forward from nozzle 2.

Fig. 4 shows another embodiment of no blade fan device of the present utility model.As can be seen from the figure, the utility model comprises: nozzle 2 and be arranged on nozzle 2 inside be used to produce member by the air-flow of described nozzle, described member comprises motor 6 and the impeller 7 that is fixed on the motor rotation axis, nozzle 2 comprises inner passage 3, be arranged on relief opening 4, the training wall 11 on the wall and the spacing wall 12 that is used to locate around the nozzle, wherein, spacing wall 12 is arranged between relief opening 4 and the training wall 11, makes relief opening and training wall in the certain spacing of being separated by perpendicular to the direction of axis X.

When this kind fan assembly uses, it is positioned at the member operation work of the generation air-flow of nozzle 2 inside, air can be drawn into from the intake grill at the rear portion that is positioned at nozzle 2, send in the inner passage 3 of nozzle 2 through after boosting, and be deflated mouthfuls 4 ejections, the air-flow that is ejected constantly entrainments its ambient air makes air-flow obtain amplifying, and the air-flow that is sprayed from relief opening 4 reaches the combination of the air-flow that is entrainmented to produce the total air flow that penetrates forward from nozzle 2 flow process.In the present embodiment, air-flow is from the incipient stage of relief opening 4 ejections, its air-flow is not close to training wall 11 yet and is flowed, the noise of its generation and the mobile energy that is lost are all very little, follow-up phase in gas flow downstream, the air-flow that air-flow that is sprayed and quilt are entrainmented is because the existence of training wall is just mobile near training wall gradually.

Although showed and described and thought preferred embodiment of the present utility model at present, apparent, those skilled in the art can carry out various changes and improvements, and does not deviate from the scope of the present utility model that is limited by appended claims.

Claims

1. no blade fan device that is used to produce air stream, it is characterized in that, described fan assembly comprises: nozzle (2) and be used to produce member by the air-flow of described nozzle, described nozzle comprises the inner passage (3) that is used to receive air-flow, be used to receive relief opening (4) from the air-flow of described inner passage, be used for the training wall (11) of steering flow and the spacing wall (12) that is used to locate, wherein, described spacing wall is arranged between described relief opening and the described training wall, makes described relief opening and described training wall in the certain spacing (D) of being separated by perpendicular to the direction of axis (X).

2. no blade fan device as claimed in claim 1 is characterized in that described nozzle limits at least one opening (5), is entrainmented from the air-flow that described relief opening sprayed by described opening from described fan assembly air outside.

3. as the described no blade fan device of one of claim 1 to 2, it is characterized in that, described relief opening and described training wall in the spacing of being separated by perpendicular to the direction of described axis between 1 millimeter to 10 millimeters.

4. as the described no blade fan device of one of claim 1 to 2, it is characterized in that the Way out of described relief opening and the angle of described axial direction are between 0 degree is spent to 20.

5. as the described no blade fan device of one of claim 1 to 2, it is characterized in that described relief opening is slot-shaped relief opening, described relief opening at the width in its outlet port between 1 millimeter to 6 millimeters.

6. as the described no blade fan device of one of claim 1 to 2, it is characterized in that along on the cross section of described axis, described training wall is one section straight line, the angle of described straight line and described axis at 0 degree between 20 degree.

7. as the described no blade fan device of one of claim 1 to 2, it is characterized in that along on the cross section of described axis, described training wall is one section curve.

8. as the described no blade fan device of one of claim 1 to 2, it is characterized in that, described nozzle along the size of described axial direction between 60 millimeters to 250 millimeters.

9. as the described no blade fan device of one of claim 1 to 2, it is characterized in that, described training wall along the size of described axial direction between 50 millimeters to 150 millimeters.

10. as the described no blade fan device of one of claim 1 to 2, it is characterized in that described member comprises AC induction motor.