CN113187749A

CN113187749A - High-efficiency air conditioner fan

Info

Publication number: CN113187749A
Application number: CN202110601724.1A
Authority: CN
Inventors: 林志良; 唐秀文; 霍慧
Original assignee: Foshan City Nanhai Jiuzhou Popula Fan Co Ltd
Current assignee: Foshan City Nanhai Jiuzhou Popula Fan Co Ltd
Priority date: 2021-05-31
Filing date: 2021-05-31
Publication date: 2021-07-30
Anticipated expiration: 2041-05-31
Also published as: CN113187749B

Abstract

The invention discloses a high-efficiency air-conditioning fan, which comprises a scroll plate, side plates and an impeller, wherein the scroll plate is bent into an arc shape, the two side plates are respectively connected to two sides of the scroll plate, the two side plates and the scroll plate are enclosed to form a containing cavity, the impeller is positioned in the containing cavity, the side plates are provided with air inlets which are mutually communicated with the containing cavity, a support frame is arranged in the air inlets, the impeller is rotatably connected to the support frame, the scroll plate comprises a first air outlet section, a first arc-shaped section, a second arc-shaped section, a third arc-shaped section, a fourth arc-shaped section and a second air outlet section which are sequentially connected, an air outlet gap is arranged between the first air outlet section and the second air outlet section, the arc-shaped radius of the first arc-shaped section, the arc-shaped radius of the second arc-shaped section, the arc-shaped radius of the third arc-shaped section and the arc-shaped radius of the fourth arc-shaped section are respectively unequal, the invention can reduce the impact of air flow on the scroll tongue, reduce the noise, the volute formed by the scroll plate with unequal diameters is larger than the volute with equal diameters, the wind speed is reduced, and the whole body can be lifted from the full pressure and the static pressure.

Description

High-efficiency air conditioner fan

Technical Field

The invention relates to a non-variable-capacity pump, in particular to a high-efficiency air-conditioning fan.

Background

The fan is widely applied to daily life or production, such as the fan in an air conditioner, and along with the continuous improvement of social requirements on energy conservation, environmental protection and production working environment, the performance index of the air conditioner fan is also increasingly improved. The existing air conditioner fan blade is a single arc plate-shaped blade, the fan blade is not beneficial to wind generation, airflow is easy to separate at the position of a blade outlet, the existing air conditioner fan is low in flow, high in power consumption and high in noise, and the use energy consumption of an air conditioner is increased.

Disclosure of Invention

The invention aims to provide a high-efficiency air conditioner fan, which aims to solve one or more technical problems in the prior art and at least provides a beneficial choice or creation condition.

The solution of the invention for solving the technical problem is as follows:

a high-efficiency air-conditioning fan comprises a scroll plate, side plates and an impeller, wherein the scroll plate is bent into an arc shape, the two side plates are respectively connected to the two sides of the scroll plate, the two side plates and the scroll plate are enclosed to form an accommodating cavity, the impeller is positioned in the containing cavity, the side plate is provided with an air inlet communicated with the containing cavity, a support frame is arranged in the air inlet, the impeller is rotationally connected to the support frame, the volute plate comprises a first air outlet section, a first arc-shaped section, a second arc-shaped section, a third arc-shaped section, a fourth arc-shaped section and a second air outlet section which are sequentially connected, an air outlet gap is formed between the first air outlet section and the second air outlet section, and the arc radius of the first arc section, the arc radius of the second arc section, the arc radius of the third arc section and the arc radius of the fourth arc section are not equal.

The technical scheme at least has the following beneficial effects: the volute plate is bent to form a volute shape and is connected with the side plates on two sides, the volute plate is integrally enclosed to form a containing cavity, an air outlet gap between a first air outlet section and a second air outlet section on the volute plate and the two side plates form an air outlet, the impeller is positioned in the containing cavity, when the volute plate works, air is sucked from an air inlet on the side plates, air is discharged from the air outlet after entering the containing cavity, the volute plate mainly uses a first arc section, a second arc section, a third arc section and a fourth arc section which are different in diameter to bend out the arc shape of the volute, the distance between the formed volute tongue and the impeller is farther than that of the same diameter, so that the impact of air flow on the volute tongue can be reduced, the noise is reduced, the volute formed by the volute plate with different diameters is larger than that of the volute with the same diameter, the air flow area is larger, the air speed is reduced, and the whole body can be lifted from full pressure and static pressure.

As a further improvement of the above technical solution, the diameter of the impeller is D, the minimum distance between the second air outlet section and the impeller is a, and the ratio of a to D is 0.45 to 0.55. The minimum distance between the second air outlet section and the impeller is the opening degree of the casing, and the ratio of A to D is controlled within 0.45-0.55, so that the impact flow loss of an internal flow field can be reduced, and the noise of the fan is reduced.

As a further improvement of the technical proposal, a rectangular coordinate system is established by taking the central line of the impeller as the origin of coordinates, drawing an arc by taking the coordinate point (-0.09A ) as a first arc center and taking the radius of 0.5D as a first radius and forming a first arc, wherein the first arc segment is positioned on the first arc, drawing an arc and forming a second arc by taking the coordinate point (0.1A, -0.1A) as a second arc center and taking the radius as 0.6D as a second radius, wherein the second arc segment is positioned on the second arc, drawing an arc by taking the coordinate point (0.12A ) as a third arc center and taking the radius of 0.7D as a third radius and forming a third arc, wherein a third arc segment is positioned on the third arc, and drawing an arc by taking the coordinate point (-0.15A, 0.15A) as a fourth arc center and taking the radius of 0.9D as a fourth radius to form a fourth arc, wherein the fourth arc segment is positioned on the fourth arc. According to the coordinate point and the arc radius, an arc is drawn, the first arc, the second arc, the third arc and the fourth arc form unequal radius arc-shaped lines of the volute, the first arc section, the second arc section, the third arc section and the fourth arc section are respectively located on the first arc, the second arc, the third arc and the fourth arc, the volute formed in the way is gradually expanded outwards, the flow channel area is gradually increased, and the wind speed is reduced, so that the full-pressure efficiency of the fan is improved.

As a further improvement of the technical scheme, the distance between the two side plates is B, and the ratio of B to D is 1-1.5. The distance between the two side plates is the width of the volute and is controlled within the width range, so that the air outlet is further optimized.

As a further improvement of the above technical solution, a plane perpendicular to the second air outlet section is used as an air outlet plane, and an included angle between the first air outlet section and the air outlet plane is 52 to 58 degrees. The first air outlet section inclines to expand the air outlet, so that the air outlet diffusion is formed, and the efficiency of the fan is further improved.

As a further improvement of the technical scheme, the impeller comprises a connecting disc and a plurality of blades, and the blades are arrayed on the connecting disc in the central circumference of the connecting disc. In practical application, a plurality of blades are arranged between the two connecting discs which are arranged side by side, so that the stability of the whole structure is improved.

As a further improvement of the technical scheme, the outlet angle of the blade is 165-169 degrees. The blade can improve the air outlet total pressure and efficiency when the outlet angle is within the range value.

As a further improvement of the above technical solution, the inlet angle of the blade is 53 to 57 degrees. The inlet angle of the blade is within the range, so that the full pressure and efficiency of air outlet can be improved.

As a further improvement of the technical scheme, the length of the blade is L, and the ratio of L to D is 0.49. Within the range, the air outlet efficiency is ensured, the size of the blade can be controlled, and the weight of the blade is reduced.

Drawings

In order to more clearly illustrate the technical solution in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. It is clear that the described figures are only some embodiments of the invention, not all embodiments, and that a person skilled in the art can also derive other designs and figures from them without inventive effort.

FIG. 1 is an overall elevational view of the present invention;

FIG. 2 is an overall left side view of the present invention;

fig. 3 is a front view of the impeller of the present invention.

In the drawings: 100-worm plate, 200-side plate, 300-impeller, 310-connecting disc and 320-blade.

Detailed Description

The conception, the specific structure, and the technical effects produced by the present invention will be clearly and completely described below in conjunction with the embodiments and the accompanying drawings to fully understand the objects, the features, and the effects of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and those skilled in the art can obtain other embodiments without inventive effort based on the embodiments of the present invention, and all embodiments are within the protection scope of the present invention. In addition, all the connection relations mentioned herein do not mean that the components are directly connected, but mean that a better connection structure can be formed by adding or reducing connection accessories according to the specific implementation situation. All technical characteristics in the invention can be interactively combined on the premise of not conflicting with each other.

Referring to fig. 1 and 2, a high-efficiency air-conditioning fan includes a scroll 100, two side plates 200 and an impeller 300, the scroll 100 is bent into an arc shape, the two side plates 200 are respectively connected to two sides of the scroll 100, the two side plates 200 and the scroll 100 enclose to form a containing cavity, the impeller 300 is located in the containing cavity, an air inlet communicated with the containing cavity is arranged on the side plates 200, a support frame is arranged in the air inlet, the impeller 300 is rotatably connected to the support frame, the scroll 100 includes a first air outlet section, a first arc section, a second arc section, a third arc section, a fourth arc section and a second air outlet section which are sequentially connected, an air outlet gap is arranged between the first air outlet section and the second air outlet section, and an arc radius of the first arc section, an arc radius of the second arc section, an arc radius of the third arc section, a fan inlet air outlet air, The arc radii of the fourth arc segments are not equal. The volute plate 100 is bent to form a volute shape and is connected with the side plates 200 on two sides, the volute plate is integrally enclosed to form a containing cavity, an air outlet gap between a first air outlet section and a second air outlet section on the volute plate 100 and the two side plates 200 form an air outlet, the impeller 300 is positioned in the containing cavity, when the volute plate works, air is sucked from an air inlet on the side plates 200 and enters the containing cavity, and then air is discharged from the air outlet, the volute plate 100 mainly uses a first arc-shaped section, a second arc-shaped section, a third arc-shaped section and a fourth arc-shaped section which are different in diameter to bend out of the arc shape of the volute, the distance between the formed volute tongue and the impeller 300 is farther than that of the same diameter, so that the impact of air flow on the volute tongue can be reduced, the noise is reduced, the volute formed by the non-diameter volute plate 100 is larger than the gas through-flow area of the volute with the same diameter, the air speed is reduced, and the whole pressure can be improved.

In the first embodiment, a rectangular coordinate system is established with the center line of the impeller 300 as the origin of coordinates, drawing an arc with a coordinate point (-0.09A ) as a first arc center a1 and a radius of 0.5D as a first radius and forming a first arc R1, the first arc segment being located on the first arc, drawing an arc with the coordinate point (0.1A, -0.1A) as a second arc center a2 and with the radius of 0.6D as a second radius and forming a second arc R2, the second arc segment being located on the second arc, drawing an arc with the coordinate point (0.12A ) as a third arc center a3 and with the radius of 0.7D as a third radius and forming a third arc R3, the third arc segment being located on the third arc, and drawing an arc with the coordinate point (-0.15A, 0.15A) as a fourth arc center a4 and with the radius of 0.9D as a fourth radius and forming a fourth arc R4, wherein the fourth arc segment is positioned on the fourth arc. According to the coordinate point and the arc radius, an arc is drawn, the first arc, the second arc, the third arc and the fourth arc form unequal radius arc-shaped lines of the volute, the first arc section, the second arc section, the third arc section and the fourth arc section are respectively located on the first arc, the second arc, the third arc and the fourth arc, the volute formed in the way is gradually expanded outwards, the flow channel area is gradually increased, and the wind speed is reduced, so that the full-pressure efficiency of the fan is improved.

In the second embodiment, the diameter of the impeller 300 is D, the minimum distance between the second air outlet section and the impeller 300 is a, and the ratio of a to D is 0.45 to 0.55. The minimum distance between the second air outlet section and the impeller 300 is the opening degree of the casing, and the ratio of A to D is controlled within 0.45-0.55, so that the impact flow loss of an internal flow field can be reduced, and the noise of the fan is reduced.

The distance between the two side plates 200 is B, and the ratio of B to D is 1 to 1.5. The distance between the two side plates 200 is the width of the volute, and the width is controlled within the range, so that the air outlet is further optimized.

And taking a plane perpendicular to the second air outlet section as an air outlet plane, wherein an included angle c between the first air outlet section and the air outlet plane is 52-58 degrees. The first air outlet section inclines to expand the air outlet, so that the air outlet diffusion is formed, and the efficiency of the fan is further improved.

As shown in fig. 3, the impeller 300 includes a connecting plate 310 and a plurality of blades 320, and the plurality of blades 320 are arranged on the connecting plate 310 in a central circumferential array of the connecting plate 310. In practical application, a plurality of blades 320 are arranged between two connecting discs 310 arranged side by side, so that the stability of the whole structure is improved.

In the third embodiment, the outlet angle Q of the vane 320 is 165 to 169 degrees, and the inlet angle P of the vane 320 is 53 to 57 degrees. The blades 320 can improve the total pressure and efficiency of the outlet air when the outlet angle is within the range.

The blade 320 has a length L, and the ratio of L to D is 0.49. Within this range, the air outlet efficiency is ensured, the size of the blade 320 can be controlled, and the weight of the blade 320 is reduced.

In the above embodiments, the first embodiment is a change in the bent profile of the scroll 100 as a first variable, the second embodiment is a change in the opening of the casing as a second variable, and the third embodiment is a change in the inlet angle and the outlet angle of the blade 320 as a third variable.

In order to verify the working effect of the fan, a first group of experimental tests are carried out, the existing fan is tested and is connected with 8 air ducts, 8 different working conditions are obtained, and the obtained experimental data are shown in table 1:

table 1:

a second set of experimental tests were performed, in which the tested fan was connected to 8 air ducts with the profile of the scroll 100 changed according to the first embodiment, and none of the others changed, to obtain 8 different operating conditions, and the experimental data are shown in table 2:

table 2:

comparing table 1 and table 2, can knowing, current preceding curved fan flow is low, the static pressure is low, inefficiency, and the pipeline resistance is overcome to the static pressure, and the low tuber pipe of static pressure just will be short, just can't use when the pipeline is long, leads to user use cost height, wastes the electricity. After the bent molded line of the volute plate 100 is reshaped according to the first embodiment, the inequilateral volute plate 100 reduces the impact of airflow on the volute tongue, and reduces noise, and the inequilateral volute plate 100 expands the flow area of the equilateral gas, so that the wind speed is reduced, and according to the law of conservation of mass, the full pressure and the static pressure of the fan are improved, so that the efficiency of the fan in the first embodiment is obviously improved, but the power is also obviously increased, therefore, compared with the traditional fan, the first embodiment has higher full pressure efficiency, but the power consumption is increased.

On the basis of the first embodiment, the opening degree of the casing of the fan is changed according to the second embodiment, and the other parts are not changed, and the fan is connected with 8 air ducts to obtain 8 different working conditions, and the obtained experimental data are shown in table 3:

table 3:

comparing table 2 and table 3, it can be seen that the efficiency of the fan having the features of the first embodiment and the second embodiment is slightly increased compared to the fan having the features of the first embodiment, but the mutual impact loss of the air flows in the volute is reduced by the reasonable radial distance between the volute tongue and the impeller 300, so that the power is reduced, and the energy efficiency of the fan is improved.

On the basis of the first and second embodiments, the inlet angle and the outlet angle of the blade 320 are adjusted, when the outlet angle of the blade 320 is small, the situation that the flow rate and the pressure cannot be increased occurs, when the outlet angle of the blade 320 is large, the efficiency of the fan is reduced, and the power consumption is high, so that the inlet angle and the outlet angle need to be selected appropriately, the inlet angle and the outlet angle of the blade 320 are changed according to the third embodiment, and the others are not changed, and are connected with 8 air ducts to obtain 8 different working conditions, and the obtained experimental data are shown in table 4:

table 4:

comparing table 3 with table 4, it can be seen that, compared with the fan having the features of the first embodiment, the second embodiment and the third embodiment, the fan having the features of the first embodiment and the second embodiment has the advantages that the accumulated flows at the inlet and the outlet of the blade 320 are improved, the flow losses at two positions are reduced, the improvement deficiency in the second embodiment is made up, the effective flow range and efficiency of the fan are improved, the energy consumption of the fan is basically kept unchanged, the low-energy consumption operation of the fan is kept, and compared with the existing fan, the total pressure efficiency of the fan is improved by 6% to 7%, and the flow of the fan is improved by 15% to 20%.

In summary, in the preferred embodiment, the diameter of the impeller 300 is D, the outlet angle Q of the vane 320 is 167 degrees, the inlet angle P of the vane 320 is 54.9 degrees, the length of the vane 320 is 0.4904D, the number of the vanes 320 is 34 to 38, 36 are taken, the housing opening, i.e., the minimum distance a between the second air outlet section and the impeller 300, is 0.5032D, the angle c between the first air outlet section and the air outlet plane is 55.2 degrees, and the distance B between the two side plates 200, i.e., the width of the volute is 1.234.

While the preferred embodiments of the present invention have been illustrated and described, it will be understood by those skilled in the art that the present invention is not limited to the details of the embodiments shown and described, but is capable of numerous equivalents and substitutions without departing from the spirit of the invention as set forth in the claims appended hereto.

Claims

1. The utility model provides a high-efficient air conditioner fan which characterized in that: the novel vortex generator comprises a worm plate (100), side plates (200) and an impeller (300), wherein the worm plate (100) is bent into an arc shape, the two side plates (200) are respectively connected to two sides of the worm plate (100), the side plates (200) and the worm plate (100) are enclosed to form a containing cavity, the impeller (300) is located in the containing cavity, an air inlet communicated with the containing cavity is formed in each side plate (200), a supporting frame is arranged in the air inlet, the impeller (300) is rotatably connected onto the supporting frame, the worm plate (100) comprises a first air outlet section, a first arc section, a second arc section, a third arc section, a fourth arc section and a second air outlet section which are sequentially connected, an air outlet gap is formed between the first air outlet section and the second air outlet section, and the arc radius of the first arc section, the arc radius of the second arc section, the air outlet gap is formed between the first air outlet section and the second arc section, The arc radius of the third arc-shaped section and the arc radius of the fourth arc-shaped section are not equal.

2. The high-efficiency air conditioner fan as claimed in claim 1, wherein: the diameter of the impeller (300) is D, the minimum distance between the second air outlet section and the impeller (300) is A, and the ratio of A to D is 0.45-0.55.

3. The high-efficiency air conditioner fan as claimed in claim 2, wherein: a rectangular coordinate system is established by taking the central line of the impeller (300) as the origin of coordinates, coordinate points (-0.09A ) are taken as a first arc center, drawing an arc with the radius of 0.5D as a first radius and forming a first arc, wherein the first arc section is positioned on the first arc, drawing an arc and forming a second arc by taking the coordinate point (0.1A, -0.1A) as a second arc center and taking the radius as 0.6D as a second radius, wherein the second arc segment is positioned on the second arc, drawing an arc by taking the coordinate point (0.12A ) as a third arc center and taking the radius of 0.7D as a third radius and forming a third arc, wherein a third arc segment is positioned on the third arc, and drawing an arc by taking the coordinate point (-0.15A, 0.15A) as a fourth arc center and taking the radius of 0.9D as a fourth radius to form a fourth arc, wherein the fourth arc segment is positioned on the fourth arc.

4. The high-efficiency air conditioner fan as claimed in claim 2, wherein: the distance between the two side plates (200) is B, and the ratio of B to D is 1-1.5.

5. The high-efficiency air conditioner fan as claimed in claim 2, wherein: and a plane perpendicular to the second air outlet section is used as an air outlet plane, and an included angle between the first air outlet section and the air outlet plane is 52-58 degrees.

6. The high-efficiency air conditioner fan as claimed in claim 2, wherein: the impeller (300) comprises a connecting disc (310) and a plurality of blades (320), wherein the blades (320) are arrayed on the connecting disc (310) in a central circumference of the connecting disc (310).

7. The efficient air conditioner fan as claimed in claim 6, wherein: the exit angle of the blade (320) is 165 to 169 degrees.

8. The efficient air conditioner fan as claimed in claim 6, wherein: the inlet angle of the vane (320) is 53 to 57 degrees.

9. The efficient air conditioner fan as claimed in claim 6, wherein: the length of the blade (320) is L, and the ratio of L to D is 0.49.