Energy-saving high-performance fan

Abstract

The utility model discloses an energy-saving high-performance fan, which is applied to a fan filter unit, the high-performance fan comprises a shell, a volute is arranged in the shell, a plurality of volute tongue air outlet sections are communicated with the radial outer side wall of the volute, and the volute tongue air outlet sections are arranged at intervals along the circumferential direction; an impeller is concentrically arranged in the volute and is driven by a driving assembly to rotate to generate axial air to be conveyed into the volute; an arc-shaped baffle plate is arranged in the machine shell, is aligned to the air outlet position of the volute tongue air outlet section and is used for conveying air output from the volute tongue air outlet section to the outside in the axial direction. According to the high-performance fan, the air supply efficiency can be improved, and meanwhile the difficulty that a fan filter unit provided with the high-performance fan is installed on a suspended ceiling is not increased.

Description

Technical Field

[0001] The utility model relates to the technical field of fan filtering, in particular to an energy-saving high-performance fan. Background Art

[0002] FFU (Fan Filter Units), or fan filter unit, works on the principle that the centrifugal fan of the FFU draws air into the FFU, and passes through the air filter inside the FFU to adsorb the particles in the air in the filter, thus achieving the effect of purifying the air. It is currently widely used in semiconductor, liquid crystal manufacturing, electronics, biopharmaceuticals and other industries. The fan filter unit is usually installed on the ceiling for use, and the wind is axially transported to the inside of the fan filter unit for filtration before being axially output.

[0003] As an indispensable power unit in a fan filter unit, the fan's own indicators such as energy consumption, noise, vibration, static pressure and uniformity directly affect the performance of the entire filter unit. The fans currently used in fan filter units have low air supply efficiency and high energy consumption; in order to improve the air supply efficiency, some manufacturers use impellers and flow channels with large ventilation cross-sections, but this will increase the overall size of the fan, making the fan filter unit equipped with such a fan larger and more inconvenient to install on the ceiling. Utility Model Content

[0004] Therefore, the technical problem to be solved by the utility model is to overcome the defect of low air supply efficiency of the fan applied to the fan filter unit in the prior art, thereby providing an energy-saving high-performance fan.

[0005] According to the utility model, an energy-saving high-performance fan is provided, which is applied to a fan filter unit. The high-performance fan comprises:

[0006] chassis;

[0007] A volute is arranged in the casing, and a plurality of volute tongue air outlet sections are connected on the radial outer side wall of the volute, and the plurality of volute tongue air outlet sections are arranged at intervals along the circumferential direction;

[0008] An impeller is concentrically disposed in the volute and driven to rotate by a driving assembly to generate axial wind to be transported into the volute;

[0009] An arc-shaped baffle is arranged in the casing and aligned with the air outlet of the volute tongue air outlet section. The arc-shaped baffle is used to axially transport the wind output from the volute tongue air outlet section to the outside.

[0010] An energy-saving high-performance fan according to the utility model has at least the following technical effects:

[0011] By providing a volute concentrically outside the impeller, and connecting the outer wall of the volute with a volute tongue air outlet section, the volute with a higher degree of closure can increase the effect of the impeller generating wind pressure, thereby pressurizing the wind axially input into the volute and radially flowing out through the volute tongue air outlet section; at the same time, by providing an arc-shaped baffle at the air outlet of the volute tongue air outlet section, the arc-shaped baffle adjusts the wind direction of the wind radially output from the air outlet of the volute tongue air outlet section in an arc transition, so that the wind output from the volute tongue air outlet section is axially transported to the outside, satisfying the functions of axial air intake and axial air outlet of the fan filter unit; in the entire air supply process, the high-performance fan adopts a volute with a higher degree of closure to increase the effect of the impeller generating wind pressure, which can directly reduce the energy consumption required to generate the same air volume, thereby improving the air supply efficiency. Under the premise that the original product structure is basically unchanged, that is, the overall volume of the high-performance fan is basically unchanged compared with the volume of the original product structure, so that the difficulty of installing the fan filter unit equipped with the high-performance fan on the ceiling is not increased while the air supply efficiency is improved; and the high-performance fan does not need to change the drive components, impellers and control methods of the original product structure, thereby ensuring the energy-saving effect of the fan filter unit equipped with the high-performance fan without increasing the filter resistance.

[0012] Preferably, the arrangement direction of the volute tongue air outlet section is parallel to the tangent direction of the blade profile of the impeller.

[0013] Preferably, two volute tongue air outlet sections are provided, and the two volute tongue air outlet sections are arranged one hundred eighty degrees apart.

[0014] Preferably, the outer contour of the cross section of the volute perpendicular to the axial direction includes a first Archimedean involute and a second Archimedean involute, and the first Archimedean involute and the second Archimedean involute are arranged at intervals along the circumferential direction and connect the two volute tongue air outlet sections.

[0015] Preferably, the arc-shaped deflector includes a horizontal section, which is arranged parallel to a first direction, and the first direction is perpendicular to the axial direction; one end of the horizontal section away from the volute tongue air outlet section along the first direction is axially folded at a set angle to form an arc section.

[0016] Preferably, the arc-shaped baffle is arranged parallel to the second direction, and the first direction, the second direction and the axial direction are perpendicular to each other.

[0017] Preferably, both ends of the arc-shaped baffle along the second direction are provided with connecting ears, and the connecting ears are connected to the casing by fastening screws.

[0018] Preferably, a second baffle is arranged at intervals on the side of the arc-shaped baffle away from the snail tongue air outlet section, the arrangement direction of the air inlet end of the second baffle is parallel to the air outlet direction of the snail tongue air outlet section, and is used to receive the wind output by the snail tongue air outlet section; the end of the second baffle away from the snail tongue air outlet section is folded along the second direction at a set angle to form a first arc-shaped portion; a third baffle is aligned with the air outlet of the first arc-shaped portion, the third baffle is used to receive the wind output by the first arc-shaped portion, the end of the third baffle away from the first arc-shaped portion along the second direction is folded axially at a set angle to form a third arc-shaped portion, and the third arc-shaped portion is used to transport the wind output from the second baffle to the outside along the axial direction.

[0019] Preferably, the projection of the second baffle along the second direction at least partially overlaps with the volute tongue air outlet section, and the projection of the second baffle along the second direction does not fall within the range of the arc-shaped baffle.

[0020] Preferably, two second baffles are aligned and arranged at the air outlet of each volute tongue air outlet section, the side walls of the air inlet ends of the two second baffles abut against each other, and the abutment of the two second baffles overlaps with the center line of the volute air outlet section.

[0021] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 A schematic diagram of the three-dimensional structure of an energy-saving high-performance fan of this embodiment;

[0024] Figure 2 A schematic diagram of a top view of an energy-saving high-performance fan of this embodiment;

[0025] Figure 3 This is a schematic diagram of a cross-sectional front view of an energy-saving high-performance fan of this embodiment;

[0026] Figure 4 It is a schematic cross-sectional structural diagram of the volute and impeller assembly in this embodiment.

[0027] Description of reference numerals:

[0028] 1- housing, 11- arc-shaped baffle, 111- horizontal section, 112- arc-shaped section, 113- connecting ear, 114- fastening screw, 12- second baffle, 121- first arc-shaped portion, 13- third baffle, 131- third arc-shaped portion;

[0029] 2-volute, 21-volute tongue air outlet section, 22-first Archimedean involute, 23-second Archimedean involute;

[0030] 31- impeller, 32- driving assembly. DETAILED DESCRIPTION

[0031] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0033] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0035] like Figures 1 to 4The present embodiment shows an energy-saving, high-performance fan, which is applied to a fan filter unit. The high-performance fan includes a casing 1, wherein a volute 2 is arranged in the casing 1, and a plurality of volute tongue air outlet sections 21 are connected to the radial outer wall of the volute 2, and the plurality of volute tongue air outlet sections 21 are arranged at intervals in the circumferential direction; an impeller 31 is concentrically arranged in the volute 2, and the impeller 31 is driven to rotate by a driving assembly 32 to generate axial wind to be transported into the volute 2; an arc-shaped baffle 11 is arranged in the casing 1, and the arc-shaped baffle 11 is aligned with the air outlet of the volute tongue air outlet section 21, and is used to transport the wind output from the volute tongue air outlet section 21 axially to the outside. It can be understood that the axial direction of the present embodiment refers to Figure 1 Axial direction in.

[0036] The high-performance fan of this embodiment is provided with a volute 2 on the outer concentric cover of the impeller 31, and the outer wall of the volute 2 is connected to a volute tongue air outlet section 21. The volute 2 with a higher degree of closure can increase the effect of the impeller 31 on generating wind pressure, thereby pressurizing the wind axially input into the volute 2 and radially flowing out through the volute tongue air outlet section 21; at the same time, an arc-shaped baffle 11 is provided at the air outlet of the volute tongue air outlet section 21, and the arc-shaped baffle 11 can reduce the resistance to wind while adjusting the wind direction of the wind radially output from the air outlet of the volute tongue air outlet section 21 through an arc transition, so that the wind output from the volute tongue air outlet section 21 is axially transported to the outside, satisfying the functions of axial air intake and axial air outlet of the fan filter unit; in the whole air supply process, the high-performance fan of this embodiment adopts a volute 2 with a higher degree of closure to increase the effect of the impeller 31 on generating wind pressure, which can directly reduce the energy consumption required to generate the same air volume, thereby improving the air supply efficiency. The high-performance fan of this embodiment is under the premise of basically not changing the original product structure, that is, the overall volume of the high-performance fan of this embodiment is basically not increased compared with the volume of the original product structure, so that the difficulty of installing the fan filter unit equipped with the high-performance fan of this embodiment on the ceiling is not increased while the air supply efficiency is improved; and the high-performance fan of this embodiment does not need to change the drive component 32, impeller 31 and control method of the original product structure, thereby ensuring the energy-saving effect of the fan filter unit equipped with the high-performance fan of this embodiment without increasing the filter resistance.

[0037] Specifically, the gap t between the inner wall of the volute 2 and the outer wall of the impeller 31 is set to 0.03 to 0.06 times the diameter of the impeller 31. This ensures that the overall volume of the high-performance fan of this embodiment is substantially unchanged compared to the volume of the original product structure.

[0038] Specifically, the driving component 32 is configured as a motor, and the output shaft of the motor is connected to the impeller 31. The driving component 32 may be a driving component 32 in a conventional fan, and its specific structure is not limited, and it can drive the impeller 31 to rotate to realize the function of axial air intake.

[0039] like Figure 4 As shown, optionally, the arrangement direction of the volute tongue air outlet section 21 is parallel to the tangent direction of the blade profile of the impeller 31; the resistance in the process of radially outputting the wind axially delivered to the volute 2 from the volute tongue air outlet section 21 can be reduced, the energy loss in the air supply process can be reduced, and the air supply efficiency of the high-performance fan of this embodiment can be effectively improved.

[0040] Optionally, two volute tongue air outlet sections 21 are provided, and the two volute tongue air outlet sections 21 are arranged at an interval of 180 degrees. The two volute tongue air outlet sections 21 can simultaneously axially output wind from opposite sides of the volute 2 to the outside, thereby increasing the area of ​​air supply; at the same time, the wind output by the two volute tongue air outlet sections 21 arranged at an interval of 180 degrees will basically not interfere with each other, thereby improving the air supply effect of the high-performance fan of this embodiment.

[0041] In specific applications, the number of the volute tongue air outlet sections 21 can be reasonably increased or decreased according to the internal size of the casing 1 and the external size of the volute 2. For example, in other embodiments, the volute tongue air outlet sections 21 are provided with three, four, five or other numbers.

[0042] like Figure 4 As shown, optionally, the outer contour of the cross section of the volute 2 perpendicular to the axial direction includes a first Archimedean involute 22 and a second Archimedean involute 23, the first Archimedean involute 22 and the second Archimedean involute 23 are arranged at intervals along the circumferential direction, and connect the two volute tongue air outlet sections 21. The volute 2 with such a structure is more convenient for wind to flow inside the volute 2, reducing the energy loss of wind during the flow process.

[0043] like Figure 1 As shown, optionally, the arc-shaped deflector 11 includes a horizontal section 111, and the horizontal section 111 is arranged parallel to a first direction, and the first direction is perpendicular to the axial direction; one end of the horizontal section 111 away from the volute tongue air outlet section 21 along the first direction is axially folded at a set angle to form an arc section 112. The horizontal section 111 is arranged in parallel with the volute tongue air outlet section 21 to facilitate receiving the wind output from the outlet of the volute tongue air outlet section 21; at the same time, the connection between the arc section 112 and the horizontal section 111 is made into an arc transition, which can reduce the resistance in the process of adjusting the wind direction of the radially output wind from the outlet of the volute tongue air outlet section 21 to the axial direction, reduce the energy loss of the wind during the flow process, and improve the air supply efficiency of the high-performance fan of this embodiment. It can be understood that the first direction of this example refers to Figure 1 The first direction in .

[0044] Optionally, the arc-shaped baffle 11 is arranged parallel to the second direction, and the first direction, the second direction and the axial direction are perpendicular to each other. This arrangement can achieve the goal of fully reducing the resistance encountered by the wind during the adjustment of the wind direction on the basis of adjusting the wind direction output from the outlet of the volute tongue outlet section 21 to the axial direction, reducing the energy loss of the wind during the flow process, and improving the air supply efficiency of the high-performance fan of this embodiment. It can be understood that the angle formed by the outlet direction of the volute tongue outlet section 21 and the second direction is set to 65 degrees; the second direction of this embodiment refers to Figure 1 The second direction in .

[0045] like Figure 1 As shown, optionally, both ends of the arc-shaped baffle plate 11 along the second direction are provided with connecting ears 113, and the connecting ears 113 are connected to the housing 1 by fastening screws 114. The arc-shaped baffle plate 11 is detachably connected to the housing 1 by fastening screws 114, so that when the arc-shaped baffle plate 11 is damaged, it can be removed for replacement or repair without replacing the entire body, thereby reducing the repair cost.

[0046] like Figure 1 and Figure 2 As shown, optionally, a second baffle 12 is arranged at intervals on the side of the arc-shaped baffle 11 away from the volute tongue air outlet section 21, and the arrangement direction of the air inlet end of the second baffle 12 is parallel to the air outlet direction of the volute tongue air outlet section 21, and is used to receive the wind output by the volute tongue air outlet section 21; the end of the second baffle 12 away from the volute tongue air outlet section 21 is folded along the second direction at a set angle to form a first arc portion 121; a third baffle 13 is aligned with the air outlet of the first arc portion 121, and the third baffle 13 is used to receive the wind output by the first arc portion 121, and the end of the third baffle 13 away from the first arc portion 121 along the second direction is folded axially at a set angle to form a third arc portion 131, and the third arc portion 131 is used to transport the wind output from the second baffle 12 to the outside along the axial direction. The third baffle 13 and the arc-shaped baffle 11 are staggered in the first direction, and after receiving the wind output by the volute tongue air outlet section 21, the second baffle 12 first adjusts the wind direction to be along the first direction through the first arc-shaped portion 121 and transmits it to the third baffle 13, and then adjusts the wind direction of the wind input into the third baffle 13 along the first direction through the third arc-shaped portion 131 for a transition arc, so that the wind output from the volute tongue air outlet section 21 is axially transmitted to the outside through the third arc-shaped portion 131, thereby increasing the air supply area and improving the air supply effect of the high-performance fan of this embodiment; at the same time, the third baffle 13 and the arc-shaped baffle 11 realize zoned control of airflow flow to achieve diversion, so that the wind flow process tends to be smooth and stable, avoiding the generation of air flow dead zones or blockages.

[0047] Optionally, the projection of the second baffle 12 along the second direction overlaps at least partially with the volute tongue air outlet section 21, and the projection of the second baffle 12 along the second direction does not fall within the range of the arc-shaped baffle 11. This arrangement allows the second baffle 12 and the arc-shaped baffle 11 to be staggered in the axial direction, so that the wind output from the volute tongue air outlet section 21 is divided into two parts along the axial direction, one part is axially output through the arc-shaped baffle 11, and the other part is axially output through the second baffle 12 and the third baffle 13 in sequence, so as to achieve partitioned control of air flow and diversion, so that the wind flow process tends to be smooth and stable, and avoid the generation of air flow dead zones or blockages.

[0048] like Figure 1 and Figure 2 As shown, optionally, two second baffles 12 are aligned at the air outlet of each of the volute tongue air outlet sections 21, the side walls of the air inlet ends of the two second baffles 12 are abutted, and the abutment of the two second baffles 12 overlaps with the center line L of the air outlet section of the volute 2. This arrangement makes the amount of wind output from the volute tongue air outlet section 21 delivered to the two second baffles 12 respectively basically the same, so that the amount of wind output axially through the two third baffles 13 spaced apart along the second direction is basically the same, further improving the air supply effect of the high-performance fan of this embodiment.

[0049] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention of the utility model.

Claims

1. An energy-saving high-performance fan, applied to a fan filter unit, characterized in that: The high performance fan comprises: Housing (1); A volute (2) is arranged in the casing (1), a radial outer side wall of the volute (2) is connected to a plurality of volute tongue air outlet sections (21), and the plurality of volute tongue air outlet sections (21) are arranged at intervals along the circumferential direction; An impeller (31) is coaxially arranged in the volute (2) and driven to rotate by a driving assembly (32) to generate axial wind to be transported into the volute (2); An arc-shaped baffle plate (11) is arranged in the casing (1) and is aligned with the air outlet of the volute tongue air outlet section (21). The arc-shaped baffle plate (11) is used to transport the air output from the volute tongue air outlet section (21) to the outside in an axial direction.

2. The energy-saving high-performance fan according to claim 1, characterized in that: The arrangement direction of the volute tongue air outlet section (21) is parallel to the tangent direction of the blade profile of the impeller (31).

3. The energy-saving high-performance fan according to claim 1, characterized in that: Two volute tongue air outlet sections (21) are provided, and the two volute tongue air outlet sections (21) are arranged at an interval of 180 degrees.

4. The energy-saving high-performance fan according to claim 3, characterized in that: The outer contour of the cross section of the volute (2) perpendicular to the axial direction comprises a first Archimedean involute (22) and a second Archimedean involute (23); the first Archimedean involute (22) and the second Archimedean involute (23) are arranged at intervals in the circumferential direction and connect the two volute tongue air outlet sections (21).

5. The energy-saving high-performance fan according to claim 1, characterized in that: The arc-shaped deflector (11) comprises a horizontal section (111), the horizontal section (111) is arranged parallel to a first direction, and the first direction is perpendicular to the axial direction; one end of the horizontal section (111) facing away from the volute tongue air outlet section (21) along the first direction is folded along the axial direction at a set angle to form an arc-shaped section (112).

6. The energy-saving high-performance fan according to claim 5, characterized in that: The arc-shaped baffles (11) are arranged parallel to the second direction, and the first direction, the second direction and the axial direction are perpendicular to each other.

7. The energy-saving high-performance fan according to claim 6, characterized in that: The arc-shaped baffle plate (11) is provided with connecting ears (113) at both ends along the second direction, and the connecting ears (113) are connected to the housing (1) via fastening screws (114).

8. The energy-saving high-performance fan according to claim 5, characterized in that: A second baffle (12) is arranged at intervals on one side of the arc-shaped baffle (11) away from the volute tongue air outlet section (21); the arrangement direction of the air inlet end of the second baffle (12) is parallel to the air outlet direction of the volute tongue air outlet section (21), and is used to receive the wind output by the volute tongue air outlet section (21); one end of the second baffle (12) away from the volute tongue air outlet section (21) is folded along a second direction at a set angle to form a first arc-shaped portion (121); a third baffle (13) is arranged in alignment with the air outlet of the first arc-shaped portion (121), and the third baffle (13) is used to receive the wind output by the first arc-shaped portion (121); one end of the third baffle (13) away from the first arc-shaped portion (121) along the second direction is folded along an axial direction at a set angle to form a third arc-shaped portion (131), and the third arc-shaped portion (131) is used to transport the wind output from the second baffle (12) to the outside along the axial direction.

9. The energy-saving high-performance fan according to claim 8, characterized in that: The projection of the second baffle plate (12) along the second direction at least partially overlaps with the volute tongue air outlet section (21), and the projection of the second baffle plate (12) along the second direction does not fall within the range of the arc-shaped baffle plate (11).

10. The energy-saving high-performance fan according to claim 8, characterized in that: Two second baffles (12) are aligned and arranged at the air outlet of each volute tongue air outlet section (21), the side walls of the air inlet ends of the two second baffles (12) are abutted against each other, and the abutment point of the two second baffles (12) overlaps with the center line of the air outlet section of the volute (2).

Images