Fan and air handler unit comprising same
By placing the controller at the air inlet end of the air handling unit's fan and maintaining an appropriate distance, the problem of excessively high controller temperature caused by fan outlet heating was solved, ensuring normal operation of the controller and smooth airflow, and improving the safety and reliability of the system.
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- ZHONGSHAN BROAD OCEAN
- Filing Date
- 2025-06-03
- Publication Date
- 2026-06-04
AI Technical Summary
The heating wire at the air outlet of the air handling unit's fan causes the controller temperature to become too high, posing a safety risk and accelerating performance failure.
The controller is placed at the air inlet end of the support structure, away from the heating components at the air outlet end, and a gap is maintained between the air inlet end and the circular opening to avoid the controller being affected by heat. At the same time, the air guide ring is used to form an air guide channel to ensure smooth airflow.
This effectively avoids performance failure caused by overheating of the controller, ensures the normal operation of the controller, does not affect airflow, and improves the safety and reliability of the system.
Smart Images
Figure CN2025098823_04062026_PF_FP_ABST
Abstract
Description
Fans and air handling units including them Technical Field
[0001] This application relates to the technical field of fans, and specifically proposes a fan and an air handling unit including the fan. Background Technology
[0002] An air handling unit (AHU) is a type of centralized air handling system, specifically a heating and ventilation system that distributes air through ducts. It is generally used in industrial air conditioning equipment in machinery manufacturing, power plants, and light chemical industries.
[0003] In related technologies, the air handling unit fan needs to have a heating wire structure added at the air outlet to heat the air; however, the air outlet area is generally equipped with a motor and controller. Therefore, the heating wire will radiate to the controller, causing the controller temperature to be too high, which may pose a safety risk and accelerate the failure of the controller performance. Summary of the Invention
[0004] The purpose of this application is to solve at least some of the technical problems mentioned above, and this purpose is achieved through the following technical solutions:
[0005] In a first aspect, this application proposes a fan, which includes a support structure, a fan wheel, and an electrically connected motor and controller; the two ends of the support structure along the Z direction are an air inlet end and an air outlet end, respectively, and the support structure forms a receiving space between the air inlet end and the air outlet end, the receiving space containing the fan wheel, the motor is located at the air outlet end of the support structure, and the power output shaft of the motor is connected to the rotating shaft of the fan wheel; the air inlet end of the support structure has a circular opening, the controller is located at the air inlet end of the support structure, and there is a gap between the controller and the circular opening.
[0006] In some embodiments, the support structure includes a first support plate, a second support plate, and a bracket. The first support plate and the second support plate are spaced apart along the Z direction, and the bracket is connected between the first support plate and the second support plate. The first support plate, the second support plate, and the bracket form an accommodating space. The first support plate has a 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 dimensions of the first support plate along the X and Y directions are A and B, respectively, the distance between the first support plate and the second support plate along the Z direction is H, and the diameter of the wind turbine is D; the controller is a cylinder with a diameter of d, a dimension along the Z direction of h, and a distance of its center from the edge of the first support plate of s, then 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 provided corresponding to the impeller along the Z-direction.
[0010] In some embodiments, the support structure further includes an air guide ring, which is installed between the circular opening of the first support plate and the impeller. The inner wall of the air guide ring has a smooth curved surface and encloses an air guide channel.
[0011] In some embodiments, the throat of the air guide ring is located at its minimum diameter in the Z-direction projection, the radius of the throat is R, and the distance between the center of the air guide ring and the center of the controller is N, then satisfying: N≥R+0.5d+0.1D.
[0012] In some embodiments, the area of the second support plate is smaller than the area of the first support plate; there are multiple brackets, which are spaced apart along the circumference of the impeller, and the area between two adjacent brackets and the area where the second support plate is smaller than the first support plate constitutes an air outlet channel.
[0013] In some embodiments, the motor has a first connecting wire with a first connector at one end, and the controller has a second connecting wire with a second connector at one end; the first support plate has a clearance hole, the second connecting wire passes through the clearance hole, and the first connector and the second connector are electrically connected.
[0014] Secondly, this application proposes an air handling unit that includes the fan of the first aspect.
[0015] The technical solution proposed in this application has at least the following technical effects:
[0016] In this application, the controller is located at the air inlet end of the support structure, thereby keeping it away from the heating element at the air outlet end. This prevents the controller from overheating and failing due to the influence of the heating element. In addition, there is a gap between the controller and the circular opening at the air inlet end, thereby preventing the controller from obstructing the airflow and eliminating the impact of changing the controller's position. Attached Figure Description
[0017] To better integrate the content illustrated in the accompanying drawings with the description of the specific embodiments, a brief introduction to the drawings is provided below. It is understood that the accompanying drawings mentioned below are merely schematic illustrations of some embodiments of the relevant technical solutions and the technical solutions of this application. Without creative effort, those skilled in the art can create drawings illustrating other embodiments.
[0018] Specifically, the annotations for the accompanying drawings are as follows:
[0019] Figure 1 is a first isometric view of a fan described in some embodiments of this application;
[0020] Figure 2 is a second isometric schematic diagram of a fan described in some embodiments of this application;
[0021] Figure 3 is a cross-sectional view of a portion of the structure of an air handling unit described in some embodiments of this application.
[0022] Specifically, the annotations of the reference numerals in the accompanying drawings are as follows: 100, fan; 110, support structure; 120, impeller; 130, motor; 140, controller; 150, air guide ring; 111, first support plate; 112, second support plate; 113, bracket; 1111, circular opening; 1112, clearance hole; 131, first connecting line; 132, first connector; 141, second connecting line; 142, second connector; 151, throat; F1, air inlet; F2, air outlet; 200, heating element. Detailed Implementation
[0023] To make the embodiments of this application clearer, they will be described below in conjunction with the accompanying drawings. It is to be understood that the content mentioned below is only a partial embodiment of this application, while the complete list of all embodiments is provided. Therefore, other embodiments obtained based on the following embodiments without any inventive effort all fall within the protection scope of this application.
[0024] It should be understood that the terminology used herein is for the purpose of describing specific embodiments only and is not intended to impose strict limitations on the technical solutions unless the context clearly indicates otherwise. For example, the use of "a," "an," and "the" to modify a feature does not preclude the possibility that the feature may be plural in other embodiments.
[0025] It should be understood that the terms "comprising," "including," and "having" are open-ended, indicating the presence of the stated features but not excluding the possibility of other features in the embodiment. Similarly, the use of terms such as "first," "second," etc., to describe multiple features only indicates the distinction between one feature and another, and such terms do not imply order or sequence unless explicitly stated in the context.
[0026] It should be understood that, unless the context clearly indicates otherwise, the terms "setup," "connection," and "installation" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integrated connection; they can refer to a direct connection or an indirect connection via a medium. Those skilled in the art will understand the specific meaning of these terms in this document based on the specific circumstances.
[0027] In addition, for ease of description, the text will use terms of spatial relative relationship to describe the position of one feature relative to another feature, such as "inner", "outer", "end", "side", "upper", "middle", "lower", "high", "low", "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 besides those shown in the accompanying drawings of the specification.
[0028] The embodiments of this application will now be described with reference to the accompanying drawings.
[0029] In a first aspect, referring to Figures 1 and 2, this application proposes a fan 100, which includes a support structure 110, a fan wheel 120, and an electrically connected motor 130 and 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. The support structure 110 forms a receiving space between the air inlet end F1 and the air outlet end F2, and the fan wheel 120 is placed in the receiving space. The motor 130 is located 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 fan wheel 120. The air inlet end F1 of the support structure 110 is provided with a circular opening 1111, and the controller 140 is located 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.
[0030] In this application, the controller 140 is located at the air inlet F1 of the support structure 110, thereby keeping it away from the heating element 200 at the air outlet F2, so as to avoid the controller 140 from being affected by the heating element 200 and causing its own temperature to be too high and its performance to fail; in addition, there is a gap between the controller 140 and the circular opening 1111 of the air inlet F1, thereby preventing the controller 140 from obstructing the airflow and eliminating the impact of changing the position of the controller 140.
[0031] In some embodiments, the support structure 110 includes 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, and 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 form an accommodating space. The first support plate 111 has a 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. In some embodiments, the projection of the first support plate 111 along the Z-direction is rectangular, 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.
[0032] In some embodiments, 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; the diameter of the impeller 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 of its center from the edge of the first support plate 111 of s. Then, the following conditions are met: 1.1D≤B<A; 0.3D≤H≤D; d≤0.45D; h≤0.4H; s≥0.5d+10mm.
[0033] Specifically, d and h do not have lower limits, and their values can be determined by the integration level of the controller 140.
[0034] In some embodiments, the circular opening 1111 is disposed corresponding to the impeller 120 along the Z-direction. In some embodiments, the support structure 110 further includes an air guide ring 150, which is installed between the circular opening 1111 of the first support plate 111 and the impeller 120. The inner wall of the air guide ring 150 has a smooth curved surface and forms an air guide channel. In some embodiments, the smallest 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, which satisfies: N≥R+0.5d+0.1D.
[0035] In practice, the impact of the proposed solution on the fan performance is verified using an embodiment. Specifically, the corresponding model is placed in the air handling unit of the embodiment. Under the same conditions, the impact of having or not having a separate controller on the airflow field and performance at the fan inlet is compared (the comparison solution has the motor and controller integrated, while the proposed solution has the motor and controller separate).
[0036] In the calculation model, the Z-axis is used as the center of rotation, and the actual operating conditions of the fan 100 in the load system of the embodiment are used as the calculation input conditions. For example, the speed is set to 2000 rpm, and the system flow rate is 1870 CFM (3180 m³ / h). 3 The calculation results are listed below: / h).
[0037] The calculation results show that when the split controller is placed at the air inlet of the fan using the scheme of this application, the impact on the fan performance is minimal.
[0038] In some embodiments, the area of the second support plate 112 is smaller than the area of the first support plate 111; there are multiple brackets 113, which are spaced apart circumferentially along the impeller 120, and the area between two adjacent brackets 113 and the area of the second support plate 112 smaller than the first support plate 111 constitutes an air outlet channel. 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 has a clearance hole 1112, the second connecting line 141 passes through the clearance hole 1112, and the first connector 132 and the second connector 142 are electrically connected.
[0039] In the above embodiment, referring to FIG3, the controller 140 can control the motor 130 to work through the circuit, thereby driving the impeller 120 to rotate and disturb the airflow, so that fresh gas enters the air guide ring 150 from the circular opening 1111 of the air inlet end F1, and then flows through the impeller 120 to the gap between the adjacent brackets 113 and the area of the second support plate 112 that is smaller than the first support plate 111, and then flows out of the fan 100. The air outlet end F2 of the fan 100 is provided with a heating component 200 to heat the airflow. At the same time, the motor 130 can also generate heat to assist in heating through operation.
[0040] Understandably, the second connecting line 141 of the controller 140 is fixed using the clearance hole 1112 on the first support plate 111, and additional fasteners can be 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 wirelessly connected, which is also within the protection scope of this application.
[0041] Secondly, referring to FIG3, this application proposes an air handling unit, which includes 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 its specific technical effects will not be described in detail here.
[0042] The embodiments of this application only illustrate the structure of the air handling unit in relation to the improvements of this application in the second aspect, but do not mean that it does not have other structures. For example, the air handling unit also includes power supply equipment, ventilation ducts, etc. Other structures will not be described in detail here.
[0043] In particular, the term "and / or" in this application should be understood as follows:
[0044] In the first case, the term “and / or” located between the first subject and the second subject includes any of the following meanings: (1) only the first subject; (2) only the second subject; and (3) both the first subject and the second subject.
[0045] In the second case, the term "and / or" between the last two of three or more subjects means including at least any one of the subjects. For example, "first subject, second subject and / or third subject" has the same meaning as "first subject and / or second subject and / or third subject", specifically including the following combinations: (1) only the first subject; (2) only the second subject; (3) only the third subject; (4) the first subject and the second subject and no third subject; (5) the first subject and the third subject and no second subject; (6) the second subject and the third subject and no first subject; and (7) the first subject, the second subject and the third subject.
[0046] Furthermore, the character " / " in this application generally indicates that the objects before and after it are in an "or" relationship.
[0047] In particular, although the embodiments of this application have been described above in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the concept of this application, and such modifications and variations all fall within the scope of protection of this application.
Claims
1. A fan, characterized in that, It includes a support structure (110), a wind turbine (120), and an electrically connected motor (130) and controller (140); The support structure (110) has an air inlet (F1) and an air outlet (F2) at its two ends along the Z direction. The support structure (110) forms a receiving space between the air inlet (F1) and the air outlet (F2). The receiving space contains a wind turbine (120). The motor (130) is located at the air outlet (F2) of the support structure (110), and the power output shaft of the motor (130) is connected to the rotating shaft of the wind turbine (120). The air inlet (F1) of the support structure (110) is provided with a circular opening (1111), the controller (140) is provided at the air inlet (F1) of the support structure (110), and there is a gap between the controller (140) and the circular opening (1111).
2. The fan according to claim 1, characterized in that, The support structure (110) includes 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) form the accommodating space. The first support plate (111) has the 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).
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. The diameter of the wind turbine (120) is D. The controller (140) is a cylinder with a diameter of d, a dimension of h along the Z direction, and a distance s from its center to the edge of the first support plate (111). Then, the following conditions are met: 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) is arranged in a Z-direction corresponding to the wind turbine (120).
6. The fan according to claim 5, characterized in that, The support structure (110) also includes an air guide ring (150), which is installed between the circular opening (1111) of the first support plate (111) and the wind wheel (120). The inner wall of the air guide ring (150) has a smooth curved surface and forms an air guide channel.
7. The fan according to claim 6, characterized in that, The smallest 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, which satisfies: 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); The bracket (113) is multiple, and the multiple brackets (113) are arranged at intervals along the circumference of the impeller (120). The area between two adjacent brackets (113) and the area where the second support plate (112) is smaller than the first support plate (111) constitute an air outlet channel.
9. The fan according to claim 2, characterized in that, The motor (130) has a first connecting line (131) with a first connector (132) at the end of the first connecting line (131), and the controller (140) has a second connecting line (141) with a second connector (142) at the end of the second connecting line (141). The first support plate (111) has a clearance hole (1112), the second connecting line (141) passes through the clearance hole (1112), and the first connector (132) is electrically connected to the second connector (142).
10. An air handling unit, characterized in that, Includes the fan (100) as described in any one of claims 1 to 9.