WO2017206389A1

WO2017206389A1 - Coil pipe fan structure

Info

Publication number: WO2017206389A1
Application number: PCT/CN2016/098489
Authority: WO
Inventors: 林炎虎; 谭财胜; 官金仁
Original assignee: 中山大洋电机股份有限公司
Priority date: 2016-05-30
Filing date: 2016-09-08
Publication date: 2017-12-07

Abstract

Disclosed is a coil pipe fan structure, comprising an air blower (1), a fan box (2) and a heat exchanger (3). The air blower comprises a volute (11), a wind wheel (12) and an electric motor (13); the wind wheel is mounted in a first cavity (111) of the volute; the volute is provided with a first air inlet (112) and a first air outlet (113); an output shaft of the electric motor extends into the first cavity to be connected to and mounted to the wind wheel; the fan box is provided with a second cavity (21); a second air inlet (22) is provided on one side of the fan box, and a second air outlet (23) is provided on the other side of the fan box; the heat exchanger is mounted in the second cavity and is located between the second air inlet and the second air outlet; and a volute tongue part at the first air outlet of the volute is connected to a static pressure recovery plate (4) which is arranged in an inclined manner, the higher end of the static pressure recovery plate is connected to the volute tongue at the air outlet of the volute, and the lower end of the static pressure recovery plate extends towards the heat exchanger. With the coil pipe fan structure, the operating efficiency of the fan can be effectively improved, thereby reducing losses and saving energy.

Description

Coil fan structure

Technical field:

The utility model relates to a coil fan structure.

Background technique:

The existing coil fan structure is as shown in FIG. 1 , FIG. 2 and FIG. 3 , and includes a blower 100 , a wind box body 200 and a heat exchanger 300 . The blower 100 includes a volute 101 , a wind wheel 102 and a motor 103 . The wind wheel 102 is mounted inside the first cavity 104 of the volute 101. The volute 101 is provided with a first air inlet 105 and a first air outlet 106, a first air inlet 105 and a first air outlet 106 and a first cavity 104. The output shaft of the motor 103 extends into the first cavity 104 and is connected to the wind wheel 102. The wind chamber body 200 is provided with a second cavity 201, and the wind chamber body 200 is provided with a second air inlet 202, the wind chassis. A second air outlet 203 is disposed on the other side of the body 200. The heat exchanger 300 is mounted inside the second cavity 201 and located between the second air inlet 202 and the second air outlet 203.

Since the cross section of the wind enclosure body 200 is a rectangular parallelepiped structure, the heat exchanger 300 is vertically mounted. The structure has the following problem: when the first air outlet 106 of the volute 101 enters the wind enclosure body 200, in the lower left corner of the wind enclosure body 200 The region forms a volute, and the wind blown by the blower 100 does not directly reach the heat exchanger 300 at the vent outlet, which may cause peeling, which may affect the efficiency of the fan.

Summary of the invention:

The purpose of the utility model is to provide a coil fan structure, which can effectively improve the operating efficiency of the fan, reduce losses and save electrical energy.

The purpose of the utility model is achieved by the following technical solutions:

A coil fan structure includes a blower, a wind casing body and a heat exchanger, wherein the blower comprises a volute, a wind wheel and a motor, the wind wheel is installed in the first cavity of the volute, and the volute is provided with the first The air inlet and the first air outlet, the output shaft of the motor extends into the first cavity and is connected with the wind wheel, the wind chamber body is provided with a second cavity, and the wind chamber body is provided with a second air inlet, the wind box body The second side air outlet is disposed on the other side, and the heat exchanger is installed in the second cavity and located between the second air inlet and the second air outlet, wherein the first air outlet of the volute is connected to the volute tongue Static pressure return plate, static pressure return plate tilt setting, The high end of the static pressure recovery plate is connected with the volute tongue of the volute air outlet, and the low end of the static pressure recovery plate extends toward the heat exchanger.

The above-mentioned static pressure recovery plate has an inclination angle of 75°>a>30°, and the volute parameter setting satisfies the following conditions: Hscmax>(Hex1+Hex2); Hex1/D2≥0.112; Hex2/D2≤0.685, where Hscmax is The vertical distance from the center of the wind wheel to the highest point of the volute; Hex1 is the vertical distance from the top of the air outlet to the apex of the volute tongue, Hex1 is the vertical distance from the apex of the volute tongue to the center of the rotor; D2 is the diameter of the wind wheel.

The static pressure recovery plate described above is a flat plate, the second air inlet is located at an upper portion of one side of the wind casing body, and the second air outlet is located at an upper portion of the other side of the wind casing body.

The wind enclosure body described above comprises a top panel, a bottom panel, a rear panel and a side panel. The bottom panel comprises a lower left panel and a guiding panel connected to the lower left panel. The guiding panel is arranged obliquely upward, and the high-end connection of the guiding panel To the bottom of the second air outlet, wherein the top panel, the lower left panel, the rear panel and the side panel are enclosed in a rectangular structure, and the second air inlet is disposed at the top of the rear panel.

The heat exchanger described above is installed vertically or obliquely, and the upper and lower ends of the heat exchanger are connected with the top plate and the bottom plate, and the lower end of the static pressure recovery plate is connected with the bottom plate of the wind casing body.

The static pressure recovery plate described above is provided with a plurality of through holes, and a sound absorbing material is mounted in the third cavity on the lower side of the static pressure recovery plate.

The wind enclosure body described above comprises a top plate, a bottom plate, a rear plate and a side plate, and the second air inlet is arranged on the rear plate, and the bottom plate is connected by a static pressure recovery plate, a middle plate and a guide plate. The lower end of the static pressure recovery plate is connected to one end of the middle plate of the wind casing body, the guide plate is disposed obliquely upward, the high end of the guide plate is connected to the bottom of the second air outlet, and the second air outlet is provided by the side plate and the top plate It is surrounded by the high end of the guide plate.

The middle plate and the top plate are arranged in parallel, and the heat exchanger is installed vertically or obliquely, and the upper and lower ends of the heat exchanger are connected with the top plate and the middle plate.

The static pressure recovery plate described above is made of a sound absorbing material.

The air blower described above comprises two volutes, two wind wheels and one motor, and two wind inlets are arranged on one side of the wind box body, and two volutes are respectively located on two sides of the motor, and the wind wheel is disposed Inside the volute, The motor has two shaft extension ends respectively connected to the two sides of the wind wheel, and the first air outlets of the two volutes are respectively connected with two second air inlets on one side of the wind box body.

The static pressure recovery plate 4 described above is a curved plate, the heat exchanger 3 is installed obliquely, and the static pressure recovery plate 4 is inclined in the same direction as the heat exchanger 3.

Compared with the prior art, the utility model has the following effects:

1) The volute tongue portion of the first air outlet of the volute of the present invention is connected to a static pressure recovery plate, and the static pressure recovery plate is inclined, and the high end of the static pressure recovery plate is connected with the volute tongue of the volute air outlet. The lower end of the static pressure recovery plate extends in the direction of the heat exchanger, so that the blower is directly blown to the heat exchanger, effectively avoiding the phenomenon of vortex flow, improving efficiency, and also reducing the pressure loss of the air passing through the heat exchanger; It is said that if the same amount of air is output, the input power of the motor is now lower than the original. More energy saving.

2) After a large number of experiments, the inclination angle of the static pressure recovery plate is a>30°, and the volute parameter setting satisfies the following conditions: Hscmax>(Hex1+Hex2); Hex1/D2≥0.112; Hex2/D2≤0.685, energy saving effect More ideal, 5%-10% higher efficiency than traditional coil fans.

3) The bottom plate of the wind chassis body is connected by the static pressure recovery plate, the middle plate and the guide plate in sequence, and the lower end of the static pressure recovery plate is connected with one end of the middle plate of the wind chassis body, and the guide plate is inclined upwardly, and the guide plate is arranged The high-end connection to the second air outlet further simplifies the structure and saves manufacturing costs.

4) The static pressure recovery plate is made of sound absorbing material, which can effectively reduce noise.

5) The wind enclosure body comprises a top panel, a bottom panel, a front panel, a rear panel and a side panel, wherein the top panel, the bottom panel, the front panel and the rear panel enclose a parallelogram structure, and the second air inlet is disposed at the top of the rear panel The second air outlet is located at the top of the front plate, and the heat exchanger is installed vertically or obliquely. The upper and lower ends of the heat exchanger are connected with the top plate and the bottom plate, and the low end of the static pressure recovery plate and the bottom plate of the wind chassis body. The connection and the static pressure recovery plate are provided with a plurality of through holes, and the sound absorbing material is installed in the third cavity on the lower side of the static pressure recovery plate; the noise can be effectively reduced.

6) The static pressure recovery plate 4 is a curved plate, the heat exchanger 3 is installed obliquely, and the static pressure recovery plate 4 is inclined in the same direction as the heat exchanger 3, and such a setting is also lower than when there is no static pressure recovery plate. The efficiency is 10% higher.

BRIEF DESCRIPTION OF THE DRAWINGS:

Figure 1 is an exploded view showing the structure of a conventional coil fan;

Figure 2 is a plan view showing the structure of a conventional coil fan;

Figure 3 is a cross-sectional view taken along line A-A of Figure 2;

Figure 4 is a perspective view of the first embodiment of the present invention;

Figure 5 is an angular exploded view of the first embodiment of the present invention;

Figure 6 is another perspective exploded view of the first embodiment of the present invention;

Figure 7 is a plan view of the first embodiment of the present invention;

Figure 8 is a cross-sectional view taken along line B-B of Figure 7;

Figure 9 is a schematic diagram of the parameter design of the utility model;

Figure 10 is an experimental comparison diagram of the present invention;

Figure 11 is a cross-sectional view showing the structure of the second embodiment of the present invention;

Figure 12 is a cross-sectional view showing the structure of the third embodiment of the present invention;

Figure 13 is a view taken along line C of Figure 12;

Figure 14 is an exploded view of the third embodiment of the present invention;

Figure 15 is a cross-sectional view showing the structure of the fourth embodiment of the present invention;

Figure 16 is a cross-sectional view showing the structure of the fifth embodiment of the present invention.

detailed description:

The present invention will be further described in detail below through the specific embodiments and the accompanying drawings.

Embodiment 1 As shown in FIG. 4 to FIG. 9 , a coil fan structure includes a blower 1 , a wind casing body 2 and a heat exchanger 3 , and the blower 1 includes a volute 11 , a wind wheel 12 and a motor 13 . The wind wheel 12 is mounted inside the first cavity 111 of the volute 11. The volute 11 is provided with a first air inlet 112 and a first air outlet 113. The output shaft 131 of the motor 13 extends into the first cavity 111 and the wind. The wheel 12 is connected and installed, the wind chamber body 2 is provided with a second cavity 21, the wind chamber body 21 is provided with a second air inlet 22, and the other side of the wind box body 2 is provided with a second air outlet 22, and the heat exchanger 3 is installed. Inside the second cavity 21 and between the second air inlet 22 and the second air outlet 23, the volute portion of the first air outlet 113 of the volute 11 is connected to a static pressure recovery plate 4, and the static pressure recovery plate 4 is inclined. Provided, the high end of the static pressure recovery plate 4 and the first air outlet of the volute 11 The volute 110 of the port 113 is connected, and the lower end of the static pressure recovery plate 4 extends in the direction of the heat exchanger 3. The static pressure recovery plate 4 is a flat plate, the second air inlet 22 is located at an upper portion of the side of the wind casing 2, and the second air outlet 23 is located at the upper portion of the other side of the wind casing 2

The wind enclosure body 2 includes a top panel 24, a bottom panel, a rear panel 27 and a side panel 28. The top panel 24, the bottom panel, the rear panel 27 and the side panel 28 enclose a second cavity 21, and the second air inlet 22 is disposed. On the rear plate 27, the bottom plate is sequentially connected by the static pressure recovery plate 4, the middle plate 25, and the guide plate 26. The lower end of the static pressure recovery plate 4 is connected to one end of the middle plate 25 of the wind chassis body 2, The guide plate 26 is disposed obliquely upward, and the high end of the guide plate 26 is connected to the bottom of the second air outlet 23, and the second air outlet 23 is surrounded by the high end of the side plate 28, the top plate 24 and the guide plate 26. The middle plate 25 is disposed in parallel with the top plate 24, and the heat exchanger 3 is vertically installed, and the upper and lower ends of the heat exchanger 3 are connected to the top plate 24 and the middle plate 25. The static pressure recovery plate 4 is made of a sound absorbing material.

The air blower 1 includes two volutes 11, two wind wheels 12 and one motor 13, and two wind inlets 22 are disposed on one side of the wind box body 2, and two volutes 11 are respectively located on the motor 13. On both sides, the wind wheel 12 is placed inside the volute 11 , and the motor 13 has two shaft extending ends 131 respectively connected to the two side wind wheels 12 , and the first air outlets 113 of the two volutes 11 are respectively connected to the side of the wind box body 2 Two second air inlets 22 are provided to be connected.

As shown in FIG. 9, the inclination angle of the static pressure recovery plate 4 is 75°>a>30°, and the parameter setting of the volute 11 satisfies the following conditions: Hscmax>(Hex1+Hex2); Hex1/D2≥0.112; Hex2/ D2 ≤ 0.685, wherein the vertical distance from the center of the Hscmax wind wheel 12 to the highest point of the volute 11; Hex1 is the vertical distance from the top of the first air outlet 113 to the apex of the volley 110, and Hex1 is the apex of the volute 110 to the center of the wind wheel 12 Vertical distance; D2 is the diameter of the wind wheel 12. Tested, the angle of inclination a = 30 °, a = 35 °, a = 40 °, a = 45 °, a = 50 °, a = 60 °, a = 75 ° effect is ideal. As shown, under the objective conditions of Table 1, under the objective conditions of Table 1, the experimental comparisons of Table 2, Table 3 and Table 4, and a set of data were also tested without static pressure recovery plates, see Table 5, which is shown The curves of the four sets of experiments respectively show four curves A1, A2, A3 and A4. As can be seen from Fig. 10, the curve A1 satisfies the condition Hscmax>(Hex1+Hex2); Hex1/D2≥0.055; Hex2/D2≤0.883 Condition; curve A2 and curve A3 are Under critical conditions, it is clear that curve A1 is most efficient at an output air volume of less than 10 units. The A4 curve described in Table 5 without a static pressure recovery plate has the lowest efficiency.

Table 1

Table 2

table 3

Table 4

table 5

Embodiment 2: As shown in FIG. 11 , this embodiment is a modification based on the first embodiment. The main improvement is that the heat exchanger 3 is installed obliquely, and the upper and lower ends of the heat exchanger 3 are connected to the top plate 24 and the middle portion. The plates 25 are connected and the heat exchanger 3 is no longer perpendicular to the top plate 24 and the middle plate 25.

Embodiment 3: As shown in FIG. 12 to FIG. 14 , this embodiment is a modification based on the first embodiment: the main modification is the wind chassis body 2, and the wind enclosure body 2 includes a top panel 24 and a bottom panel. The rear plate 27 and the side plate 28 are enclosed. The bottom plate includes a left lower panel 29 and a lower guide plate 26 connected to the lower left panel 29. The guide plate 26 is disposed obliquely upward, and the high end of the guide plate 26 is connected to the bottom of the second air outlet 23. The top plate 24, the lower left panel 29, the rear plate 27 and the side plate 28 enclose a rectangular structure, and the second air inlet 23 is disposed at the top of the rear plate 27.

The heat exchanger 3 is vertically installed, and the upper and lower ends of the heat exchanger 3 are connected to the top plate 24 and the lower left panel 29, and the lower end of the static pressure recovery plate 4 is connected to the bottom plate of the wind casing body 2.

The static pressure recovery plate 4 is provided with a plurality of through holes 41, and a sound absorbing material is attached to the third cavity 42 on the lower side of the static pressure recovery plate 4.

Embodiment 4: As shown in FIG. 15, this embodiment is a modification on the basis of Embodiment 3. The main improvement is that the heat exchanger 3 is installed obliquely.

Embodiment 5: As shown in FIG. 15, this embodiment is a modification on the basis of Embodiment 4. The main improvement is that the heat exchanger 3 is installed obliquely, and the static pressure recovery plate 4 is curved in the middle depression. The plate and heat exchanger 3 are inclined in the same direction as the inclination direction of the static pressure recovery plate 4, and are inclined in one direction.

The above embodiments are preferred embodiments of the present invention, but the embodiments of the present invention are not limited thereto, and any other changes, modifications, substitutions, combinations, and simplifications made without departing from the spirit and principles of the present invention. Equivalent replacement means are included in the scope of protection of the present invention.

Claims

A coil fan structure comprising a blower (1), a wind casing (2) and a heat exchanger (3), the blower (1) comprising a volute (11), a wind wheel (12) and a motor (13) The wind wheel (12) is mounted inside the first cavity (111) of the volute (11), and the volute (11) is provided with a first air inlet (112) and a first air outlet (113), and the motor (13) The output shaft (131) extends into the first cavity (111) and is connected to the wind wheel (12). The wind casing body (2) is provided with a second cavity (21), and the wind casing body (21) The second air inlet (22) is disposed on the side, the second air outlet (22) is disposed on the other side of the wind chamber body (2), and the heat exchanger (3) is installed in the second cavity (21) and located at the second air inlet Between (22) and the second air outlet (23), the volute portion of the first air outlet (113) of the volute (11) is connected to a static pressure recovery plate (4), and the static pressure recovery plate ( 4) Tilt setting, the high end of the static pressure recovery plate (4) is connected with the volute tongue of the vent of the volute (11), and the lower end of the static pressure recovery plate (4) is directed to the heat exchanger (3) extend.
The coil fan structure according to claim 1, characterized in that: the inclination angle of the static pressure recovery plate (4) is 75°>a>30°, and the parameter setting of the volute (11) satisfies the following conditions: Hscmax>(Hex1+Hex2); Hex1/D2≥0.112; Hex2/D2≤0.685, where Hscmax is the vertical distance from the center of the wind wheel (12) to the highest point of the volute (11); Hex1 is the top of the air outlet to the volute tongue The vertical distance of the apex, Hex1 is the vertical distance from the apex of the volute tongue to the center of the wind wheel (12); D2 is the diameter of the wind wheel (12).
A coil fan structure according to claim 1 or 2, wherein the static pressure returning plate (4) is a flat plate, and the second air inlet (22) is located at an upper portion of the side of the wind casing (2), The second air outlet (23) is located on the upper side of the other side of the wind casing (2).
A coil fan structure according to claim 3, wherein the wind casing body (2) comprises a top plate (24), a bottom plate, a rear plate (27) and a side plate (28). The bottom plate comprises a left lower panel (29) and a guiding plate (26) connected to the lower left panel (29). The guiding plate (26) is arranged obliquely upward, and the high end of the guiding plate (26) is connected to the second air outlet (23). The bottom portion, wherein the top plate (24), the lower left panel (29), the rear plate (27) and the side plate (28) are surrounded by a rectangular structure, and the second air inlet (23) is disposed at the top of the rear plate (27).
A coil fan structure according to claim 4, wherein the heat exchanger (3) is vertical Straight or inclined installation, the upper and lower ends of the heat exchanger (3) are connected to the top plate (24) and the bottom plate, and the lower end of the static pressure return plate (4) is connected to the bottom plate of the wind casing body (2).
A coil fan structure according to claim 5, wherein the static pressure returning plate (4) is provided with a plurality of through holes (41) on the lower side of the static pressure returning plate (4). A sound absorbing material is installed in the three cavities (42).
A coil fan structure according to claim 3, wherein the wind casing body (2) comprises a top plate (24), a bottom plate, a rear plate (27) and a side plate (28). The second air inlet (22) is disposed on the rear plate (27), and the bottom plate is sequentially connected by a static pressure recovery plate (4), a middle plate (25) and a guide plate (26), and the static pressure recovery plate ( 4) The lower end is connected to one end of the middle plate (25) of the wind casing body (2), the guide plate (26) is inclined upward, and the high end of the guide plate (26) is connected to the bottom of the second air outlet (23). The second air outlet (23) is surrounded by the high end of the side panel (28), the top panel (24) and the guiding panel (26).
A coil fan structure according to claim 7, wherein the middle plate (25) is arranged in parallel with the top plate (24), and the heat exchanger (3) is installed vertically or obliquely, and the heat exchanger (3) The upper and lower ends are connected to the top plate (24) and the middle plate (25).
A coil fan structure according to claim 7 or 8, wherein the static pressure recovery plate (4) is made of a sound absorbing material.
A coil fan structure according to claim 3, wherein said blower (1) comprises two volutes (11), two wind wheels (12) and one motor (13). Two second air inlets (22) are arranged on one side of the wind chamber body (2), two volutes (11) are respectively located on two sides of the motor (13), and the wind wheel (12) is placed on the volute (11) Inside, the motor (13) has two shaft extension ends connected to the two side wind wheels (12), and the first air outlets (113) of the two volutes (11) are respectively disposed on the side of the wind box body (2) The second air inlet (22) is connected.
A coil fan structure according to claim 1 or 2, characterized in that the static pressure recovery plate (4) is a curved plate, the heat exchanger (3) is installed obliquely, and the static pressure recovery plate (4) It is inclined in the same direction as the heat exchanger (3).