Fan and air handling unit comprising same
By placing the controller at the air inlet end of the air handling unit's fan and keeping it spaced apart from the heating components at the air outlet end, combined with the air guide ring design, the problem of the controller overheating due to heat radiation is solved, ensuring stable performance of the fan and smooth airflow.
Patent Information
- Application Number
- CN202422932427.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-28
- Publication Date
- 2025-10-14
- Estimated Expiration
- 2034-11-28
AI Technical Summary
The radiation from the heating components at the fan outlet of the air handling unit causes the controller to overheat, posing a safety risk and accelerating performance failure.
The controller is set at the air inlet end of the support structure and kept at a distance from the heating component at the air outlet end. The support structure design is used to avoid the influence of heat radiation. At the same time, an air guide ring is set at the air inlet end to form an air guide channel to ensure smooth airflow.
It effectively avoids the controller from overheating due to heat radiation, reduces the risk of performance failure, ensures smooth and unobstructed airflow, and has little impact on fan performance.
Smart Images
Figure CN223434501U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The application relates to the technical field of a fan, and particularly discloses a fan and an air handling unit comprising the same. BACKGROUND
[0002] The air handling unit (AHU) belongs to a centralized air handling system, specifically a heating and ventilation system that distributes air through air pipes, and is generally applied to industrial air conditioning equipment such as mechanical manufacturing, power stations and light chemical industry.
[0003] In the related art, the fan of the air handling unit needs to be provided with a heating wire structure at the air outlet end to heat air. However, the air outlet end is generally provided with a motor and a controller, so that the heating wire radiates to the controller, thereby causing the temperature of the controller to be too high, which may cause a safety risk and accelerate performance failure of the controller. UTILITY MODEL CONTENT
[0004] The application aims to solve at least part of the technical problems mentioned above, and the aim is achieved by the following technical solutions:
[0005] In a first aspect, the application provides a fan, which comprises a support structure, a wind wheel, and an electrically connected motor and controller. The two ends of the support structure along the Z direction are respectively an air inlet end and an air outlet end, and the support structure forms an accommodation space between the air inlet end and the air outlet end. The wind wheel is arranged in the accommodation space. The motor is arranged at the air outlet end of the support structure, and the power output shaft of the motor is connected with the rotating shaft of the wind wheel. The air inlet end of the support structure is provided with a circular opening, and the controller is arranged at the air inlet end of the support structure and has a spacing with the circular opening.
[0006] In some embodiments, the support structure comprises a first support plate, a second support plate and a support frame. The first support plate and the second support plate are arranged at intervals along the Z direction, and the support frame is connected between the first support plate and the second support plate. The first support plate, the second support plate and the support frame enclose the accommodation space. The first support plate is provided with the circular opening, the controller is mounted on the first support plate, and the motor is mounted on the second support plate.
[0007] In some embodiments, the projection of the first support plate along the Z direction is a rectangle, the circular opening is located at the geometric center of the rectangle, and the controller is located at one corner of the rectangle.
[0008] In some embodiments, the first support plate has a size of A and B along the X direction and the Y direction respectively, the distance between the first support plate and the second support plate along the Z direction is H, the diameter of the wind wheel is D; the controller is a cylinder, and the diameter thereof is d, the size thereof along the Z direction is h, and the distance between the center of the controller and the edge of the first support plate is s, and the following conditions are met: 1.1D≤B<A; 0.3D≤H≤D; d≤0.45D; h≤0.4H; s≥0.5d+10mm.
[0009] In some embodiments, the circular opening is arranged corresponding to the wind wheel along the Z direction.
[0010] In some embodiments, the support structure further comprises a wind guide ring, which is installed between the circular opening of the first support plate and the wind wheel, and the inner wall of the wind guide ring has a smooth curved surface and encloses a wind guide channel.
[0011] In some embodiments, the minimum diameter of the wind guide ring in the Z direction projection is the throat thereof, the radius of the throat is R, and the distance between the center of the wind guide ring and the center of the controller is N, and the following conditions are met: N≥R+0.5d+0.1D.
[0012] In some embodiments, the area of the second support plate is smaller than that of the first support plate; the support has a plurality of supports, and the plurality of supports are arranged at intervals along the circumference of the wind wheel, and the outflow channel is formed between the adjacent two supports and the area smaller than the first support plate of the second support plate.
[0013] In some embodiments, the motor has a first connecting line, and the end of the first connecting line is provided with a first connector; the controller has a second connecting line, and the end of the second connecting line is provided with a second connector; the first support plate is provided with a relief hole, the second connecting line passes through the relief hole, and the first connector and the second connector are electrically connected.
[0014] In the second aspect, the application provides an air handling unit, which comprises the fan of the first aspect.
[0015] The technical scheme provided by the application has at least the following technical effects:
[0016] In the application, the controller is arranged at the air inlet end of the support structure, away from the heating component at the air outlet end, so as to avoid the controller from being affected by the heating component and causing the temperature of the controller to be too high and the performance of the controller to be invalid; in addition, the controller has a space with the circular opening at the air inlet end, so as to avoid the controller from blocking the air flow and eliminating the influence of changing the position of the controller. BRIEF DESCRIPTION OF DRAWINGS
[0017] In order to better combine the content shown in the drawings of the specification with the content described in the detailed description, the drawings of the specification are briefly introduced as follows. It can be understood that the drawings of the specification mentioned below only schematically show the related technical solutions and some embodiments of the technical solutions of the present application, and the drawings showing other embodiments can be made by those skilled in the art without creative labor on the premise that the drawings do not fall within the scope of the present application.
[0018] Specifically, the annotations of the drawings of the specification are as follows:
[0019] Figure 1 The first axial schematic view of the fan described in some embodiments of the present application;
[0020] Figure 2 The second axial schematic view of the fan described in some embodiments of the present application;
[0021] Figure 3 The sectional view of the partial structure of the air handling unit described in some embodiments of the present application.
[0022] Specifically, the annotations of the drawings of the specification are as follows:
[0023] 100, fan; 110, support structure; 120, wind wheel; 130, motor; 140, controller; 150, air guide ring; 111, first support plate; 112, second support plate; 113, bracket; 1111, circular opening; 1112, avoidance hole; 131, first connecting line; 132, first connector; 141, second connecting line; 142, second connector; 151, throat; F1, air inlet end; F2, air outlet end; 200, heating component. DETAILED DESCRIPTION
[0024] In order to make the content of the embodiments of the present application more clear, the following will be described in conjunction with the drawings of the specification. It can be understood that the content mentioned below is only some embodiments of the present application, and all the embodiments are not exhaustively listed. Therefore, other embodiments obtained based on the following embodiments also fall within the protection scope of the present application without creative labor.
[0025] It should be understood that the terms used herein are only for the purpose of describing specific embodiments and are not intended to strictly limit the technical solutions, unless the context clearly indicates otherwise. For example, the terms "one", "a" and "said" used herein to modify the features do not exclude that the features can also be plural in other embodiments.
[0026] It should be understood that the terms "include," "comprising," and "having" are open-ended, indicating the presence of the stated features but not excluding the possibility of additional features in the embodiment. Similarly, when terms such as first, second, etc. are used herein to describe multiple features, they are merely used to distinguish one feature from another and do not imply a sequence or order unless the context clearly indicates otherwise.
[0027] It should be understood that, unless the context clearly indicates otherwise, the terms "disposed," "connected," and "installed" should be interpreted broadly. For example, they may refer to fixed, detachable, or integral connections; they may be directly connected or indirectly connected through a medium. Those skilled in the art will understand the specific meanings of these terms in the context of the text based on the specific circumstances.
[0028] In addition, for the convenience of description, the text will use terms of spatial relative relationships to illustrate the position of one feature relative to another feature, such as "inside", "outside", "end", "side", "upper", "middle", "lower", "high", "lower", "axial", "circumferential", "radial", "horizontal", "vertical", "Z direction", "second direction", etc. It can be understood that the spatial relative relationship between two features should include other specific situations in addition to those shown in the drawings of the specification.
[0029] The embodiments of the present application are described below with reference to the accompanying drawings.
[0030] First, refer to Figure 1 and Figure 2 The present application proposes a wind turbine 100, which includes a support structure 110, a wind wheel 120, and an electrically connected motor 130 and a controller 140; the two ends of the support structure 110 along the Z direction are an air inlet end F1 and an air outlet end F2, respectively, and the support structure 110 forms an accommodating space between the air inlet end F1 and the air outlet end F2, and the wind wheel 120 is accommodated in the accommodating space, the motor 130 is arranged at the air outlet end F2 of the support structure 110, and the power output shaft of the motor 130 is connected to the rotating shaft of the wind wheel 120; the air inlet end F1 of the support structure 110 is provided with a circular opening 1111, and the controller 140 is arranged at the air inlet end F1 of the support structure 110, and there is a gap between the controller 140 and the circular opening 1111.
[0031] In the present application, the controller 140 is arranged at the air inlet end F1 of the support structure 110, so as to be away from the heating component 200 at the air outlet end F2, so as to prevent the controller 140 from being affected by the heating component 200, causing its own temperature to be too high and performance failure; in addition, there is a gap between the controller 140 and the circular opening 1111 of the air inlet end F1, so as to prevent the controller 140 from obstructing the incoming air flow and eliminate the impact of the change of position of the controller 140.
[0032] In some embodiments, the support structure 110 comprises a first support plate 111, a second support plate 112, and a bracket 113, the first support plate 111 and the second support plate 112 are spaced apart along the Z direction, the bracket 113 is connected between the first support plate 111 and the second support plate 112, and the first support plate 111, the second support plate 112, and the bracket 113 enclose an accommodation space; the first support plate 111 is provided with a circular opening 1111, the controller 140 is installed on the first support plate 111, and the motor 130 is installed on the second support plate 112. In some embodiments, the projection of the first support plate 111 along the Z direction is a rectangle, the circular opening 1111 is located at the geometric center of the rectangle, and the controller 140 is located at one corner of the rectangle.
[0033] In some embodiments, the first support plate 111 has a size of A along the X direction and a size of B along the Y direction, the distance between the first support plate 111 and the second support plate 112 along the Z direction is H, and the diameter of the wind wheel 120 is D; the controller 140 is a cylinder, and has a diameter of d, a size of h along the Z direction, and a distance of s from the edge of the first support plate 111, and the following conditions are met: 1.1D≤B<A; 0.3D≤H≤D; d≤0.45D; h≤0.4H; and s≥0.5d+10mm.
[0034] In particular, d and h do not have lower limit values, which can be determined by the integration degree of the controller 140.
[0035] In some embodiments, the circular opening 1111 is arranged corresponding to the wind wheel 120 along the Z direction. In some embodiments, the support structure 110 further comprises a guide ring 150, which is installed between the circular opening 1111 of the first support plate 111 and the wind wheel 120, and the inner wall of the guide ring 150 has a smooth curved surface and encloses a guide channel. In some embodiments, the minimum diameter of the guide ring 150 in the Z direction projection is the throat 151 thereof, the radius of the throat 151 is R, the distance between the center of the guide ring 150 and the center of the controller 140 is N, and the following condition is met: N≥R+0.5d+0.1D.
[0036] In practice, the influence of the scheme of the application on the performance of the fan is verified by placing the corresponding model in the air handling unit of the embodiment, and the influence of the split type controller on the flow field and performance of the fan at the inlet is compared under the same state (the comparison scheme is that the motor and the controller are integrally arranged, and the scheme of the application is that the motor and the controller are split arranged).
[0037] In the calculation model, the Z axis is taken as the rotation center, and the actual working condition of the fan 100 in the load system of the embodiment is taken as the calculation input condition, for example, the rotational speed is set to 2000 rpm, the system flow rate is 1870 CFM (3180 m 3 / h), and the calculation result list is as follows:
[0038] Computing scheme Rotational speed rpm Flow rate m 3 / h]] Static pressure rise Pa Shaft power W Static pressure efficiency % Present application scheme 2000 3180 331.19 476.61 61.38 Comparative scheme 2000 3180 331.27 475.90 61.49
[0039] From the calculation result, it is known that the influence on the performance of the fan is very small when the split controller is arranged at the air inlet end of the fan using the scheme of the application.
[0040] In some embodiments, the area of the second support plate 112 is smaller than the area of the first support plate 111; the support 113 has a plurality, and the plurality of supports 113 are arranged at intervals along the circumference of the wind wheel 120, and the outflow channel is formed between the adjacent two supports 113 and the area of the second support plate 112 smaller than the first support plate 111. In some embodiments, the motor 130 has a first connecting line 131, and the end of the first connecting line 131 is provided with a first connector 132; the controller 140 has a second connecting line 141, and the end of the second connecting line 141 is provided with a second connector 142; the first support plate 111 is provided with a relief hole 1112, the second connecting line 141 passes through the relief hole 1112, and the first connector 132 and the second connector 142 are electrically plugged.
[0041] In the above embodiments, with reference to Figure 3 , the controller 140 can control the motor 130 to work through the line, and then drive the wind wheel 120 to rotate to disturb the airflow, so that the fresh gas enters the air guide ring 150 from the circular opening 1111 of the air inlet end F1, and then flows out of the fan 100 through the gap between the adjacent supports 113 and the area of the second support plate 112 smaller than the first support plate 111; the air outlet end F2 of the fan 100 is provided with a heating component 200 to heat the airflow, and at the same time, the motor 130 can also generate heat to assist heating by working.
[0042] It can be understood that the second connecting line 141 of the controller 140 is fixed by using the relief hole 1112 on the first support plate 111, and a fixing member can also be additionally provided to fix the first connecting line 131 and the second connecting line 141; it should be noted that the motor 130 and the controller 140 can also be connected wirelessly, which also belongs to the protection scope of the application.
[0043] Secondly, with reference to Figure 3 , the application provides an air handling unit, which comprises the fan 100 of the first aspect. Therefore, the air handling unit of the second aspect has at least all the technical effects of the fan 100 of the first aspect, and the specific technical effects will not be described here.
[0044] The embodiments of the application only illustrate the structure of the air handling unit of the second aspect related to the improvement points of the application, but it does not mean that it does not have other structures, for example, the air handling unit also comprises a power supply device, a ventilation pipeline and the like, and other structures will not be described here.
[0045] In particular, the term "and / or" as used in the application is to be interpreted to mean any of the following:
[0046] In a first case, the term "and / or" between two subjects Z and Y is intended to encompass any of the following meanings: (1) Z alone; (2) Y alone; and (3) Z and Y.
[0047] In a second case, the term "and / or" between the last two subjects Z and Y of a plurality of subjects is intended to encompass at least any one of the plurality of subjects. For example, "a first subject, a second subject, and / or a third subject" has the same meaning as "a first subject and / or a second subject and / or a third subject", and specifically encompasses the following combinations: (1) only the first subject; (2) only the second subject; (3) only the third subject; (4) the first and second subjects and not the third subject; (5) the first and third subjects and not the second subject; (6) the second and third subjects and not the first subject; and (7) the first, second, and third subjects.
[0048] Furthermore, the character " / " in the application generally indicates that the associated objects before and after it are in an "or" relationship.
[0049] In particular, although the above describes the embodiments of the application in conjunction with the drawings, various modifications and changes can be made by those skilled in the art without departing from the spirit and scope of the application, and such modifications and changes are intended to fall within the scope of the application.
Claims
1. A fan, characterized in that: It includes a support structure (110), a wind wheel (120), and an electrically connected motor (130) and a controller (140); The two ends of the support structure (110) along the Z direction are respectively an air inlet end (F1) and an air outlet end (F2); the support structure (110) forms an accommodation space between the air inlet end (F1) and the air outlet end (F2); a wind wheel (120) is accommodated in the accommodation space; the motor (130) is provided at the air outlet end (F2) of the support structure (110), and a power output shaft of the motor (130) is connected to a rotating shaft of the wind wheel (120); The air inlet end (F1) of the support structure (110) is provided with a circular opening (1111); the controller (140) is provided at the air inlet end (F1) of the support structure (110), and a gap is provided between the controller (140) and the circular opening (1111).
2. The fan according to claim 1, characterized in that The support structure (110) comprises a first support plate (111), a second support plate (112) and a bracket (113); the first support plate (111) and the second support plate (112) are spaced apart along the Z direction; the bracket (113) is connected between the first support plate (111) and the second support plate (112); the first support plate (111), the second support plate (112) and the bracket (113) enclose the accommodation space; The first support plate (111) is provided with the circular opening (1111), the controller (140) is mounted on the first support plate (111), and the motor (130) is mounted on the second support plate (112).
3. The fan according to claim 2, characterized in that The projection of the first support plate (111) along the Z direction is a rectangle, the circular opening (1111) is located at the geometric center of the rectangle, and the controller (140) is located at one corner of the rectangle.
4. The fan according to claim 3, characterized in that The dimensions of the first support plate (111) along the X direction and along the Y direction are A and B respectively, the distance between the first support plate (111) and the second support plate (112) along the Z direction is H, and the diameter of the wind wheel (120) is D; The controller (140) is a cylinder with a diameter of d, a dimension along the Z direction of h, and a distance s between the center of the circle and the edge of the first support plate (111), and the following conditions are satisfied: 1.1D≤B<A; 0.3D≤H≤D; d≤0.45D; h≤0.4H; s≥0.5d+10mm.
5. The fan according to claim 4, characterized in that: The circular opening (1111) and the wind wheel (120) are arranged correspondingly along the Z direction.
6. The fan according to claim 5, characterized in that The support structure (110) further comprises an air guide ring (150), wherein the air guide ring (150) is installed between the circular opening (1111) of the first support plate (111) and the wind wheel (120), and the inner wall of the air guide ring (150) has a smooth curved surface and encloses an air guide channel.
7. The fan according to claim 6, characterized in that The minimum diameter of the air guide ring (150) in the Z-direction projection is its throat (151), the radius of the throat (151) is R, and the distance between the center of the air guide ring (150) and the center of the controller (140) is N, then the following condition is satisfied: N≥R+0.5d+0.1D.
8. The fan according to claim 2, characterized in that: The area of the second support plate (112) is smaller than the area of the first support plate (111); There are a plurality of brackets (113), and the plurality of brackets (113) are arranged at intervals along the circumference of the wind wheel (120), and an air outlet channel is formed between two adjacent brackets (113) and in an area where the second support plate (112) is smaller than the first support plate (111).
9. The fan according to claim 2, characterized in that: The motor (130) has a first connecting line (131), an end of which is provided with a first connector (132); the controller (140) has a second connecting line (141), an end of which is provided with a second connector (142); The first support plate (111) is provided with an avoidance hole (1112), the second connecting line (141) passes through the avoidance hole (1112), and the first connector (132) and the second connector (142) are electrically plugged into each other.
10. An air handling unit, characterized in that: The wind turbine (100) comprises the wind turbine (100) according to any one of claims 1 to 9.