A hot exhaust centrifugal fan for photovoltaic production

Abstract

The utility model discloses a kind of hot exhaust centrifugal fan for photovoltaic production, including volute, the air inlet and air outlet are provided on the volute;Driving motor, the driving motor is set on volute, the output shaft of driving motor extends to volute interior through volute;Impeller, the impeller is set in volute interior, and is connected with the output shaft of driving motor;Current collector, the current collector is set on the air inlet of volute;Wherein, driving motor uses permanent magnet motor, motor terminal box is provided on driving motor, frequency conversion module is integrated in the inside of motor terminal box.Using permanent magnet motor, the same rated power and the common motor speed efficiency of number of poles are all high, volume reduces, improves the overall efficiency of fan.Fixed function frequency conversion module is integrated into motor terminal box, save a lot of space.

Description

Technical Field

[0001] This utility model relates to the field of ventilation fan technology, and mainly to a centrifugal fan for heat exhaust in photovoltaic production. Background Technology

[0002] Benefiting from the increasing global demand for high-performance elastic yarns, the demand for centrifugal fans used in photovoltaic (PV) production for heat exhaust continues to grow in the PV industry. Traditional centrifugal fans for heat exhaust in PV production use mechanical throttle valves or variable frequency motors and inverters to adjust fan speed and airflow. The former leads to reduced fan efficiency and increased energy consumption, while the latter requires higher equipment configuration, resulting in higher overall costs and a larger footprint. In summary, traditional centrifugal fans for heat exhaust in PV production suffer from low fan efficiency, high energy consumption, and a large footprint. Utility Model Content

[0003] This utility model aims to solve some problems existing in the prior art. Therefore, the purpose of this utility model is to propose a centrifugal fan for heat exhaust in photovoltaic production, which improves the overall efficiency of the equipment, reduces the space occupied by the equipment, and enhances the stability of the equipment through design.

[0004] To achieve the above objectives, this utility model employs the following technical solution: A centrifugal fan for heat exhaust in photovoltaic production, comprising: A volute, wherein an air inlet and an air outlet are provided on the volute; A drive motor is mounted on a volute, and the output shaft of the drive motor extends through the volute and into the interior of the volute. An impeller, which is disposed inside the volute and connected to the output shaft of the drive motor; A collector, wherein the collector is disposed on the air inlet of the volute; The drive motor is a permanent magnet motor, and a motor junction box is provided on the drive motor, which integrates a frequency conversion module.

[0005] Furthermore, the impeller includes an arc-shaped front plate, several blades, and a flat rear plate. The several blades are evenly distributed in an involute manner along the circumference of the arc-shaped front plate and the flat rear plate, and the front end of the blades is close to the axis of the impeller, while the rear end is far away from the axis of the impeller.

[0006] Furthermore, the front section of the blade is arc-shaped, and the rear section is straight.

[0007] Furthermore, the angle α between the front end of the blade and the extension line of the front end of the blade is 30°-50°, and the angle β between the rear end of the blade and the extension line of the rear end of the blade is 40°-60°.

[0008] Furthermore, the volute is provided with feet in multiple directions along its outer periphery, and each foot is composed of two support members, which are respectively provided on both sides of the volute.

[0009] Furthermore, the support member includes a support plate and a connecting plate, the support plate and the connecting plate being perpendicular to each other, and the connecting plate being connected to the volute.

[0010] Furthermore, the centrifugal fan for heat exhaust in photovoltaic production also includes a filter screen, which is disposed between the collector and the air inlet.

[0011] Compared with the prior art, the beneficial effects of this utility model are: Using a permanent magnet motor, the speed efficiency is higher than that of ordinary motors with the same rated power and number of poles, the size is reduced, and the overall efficiency of the fan is improved.

[0012] Integrating a fixed-function frequency converter module into the motor junction box saves a significant amount of space.

[0013] The volute has feet in multiple directions, allowing the fan to be installed in a direction that can be adjusted according to actual conditions, making it more versatile.

[0014] The features and advantages of this utility model will be described in detail through embodiments in conjunction with the accompanying drawings. Attached Figure Description

[0015] Figure 1 This is the front view of the present invention; Figure 2 This is a partial sectional view of the present invention from a side view. Figure 3 This is a cross-sectional view of the impeller of this utility model; Figure 4 This is a schematic diagram of the impeller structure of this utility model.

[0016] Figure label: 1. Volute; 101. Air inlet; 102. Air outlet; 2. Drive motor; 201. Motor junction box; 3. Impeller, 301. Arc-shaped front plate, 302. Blade, 303. Flat rear plate; 4. Current collector; 5. Support components, 501. Support plate, 502. Connecting plate; 6. Filter screen. Detailed Implementation

[0017] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0018] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses consistent with some aspects of this application as detailed in the appended claims.

[0019] The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. Unless otherwise defined, the technical or scientific terms used in this application should be understood in their ordinary sense by one of ordinary skill in the art to which this utility model pertains. The words “a” or “one” and similar terms used in this application specification and claims do not indicate a limitation of quantity, but rather indicate the presence of at least one. “A plurality” includes two, equivalent to at least two. The words “comprising” or “including” and similar terms mean that the element or object preceding “comprising” or “including” covers the element or object listed following “comprising” or “including” and its equivalents, and does not exclude other elements or objects. The words “connected” or “linked” and similar terms are not limited to physical or mechanical connections and can include electrical connections, whether direct or indirect. The singular forms “a,” “the,” and “the” used in this application specification and appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0020] like Figure 1-4 As shown, a preferred embodiment of the photovoltaic production heat exhaust centrifugal fan of this application will be disclosed and described in the following description.

[0021] A centrifugal fan for heat exhaust in photovoltaic production includes a volute 1, a drive motor 2, an impeller 3, and a collector 4. Specifically, the volute 1 is provided with an air inlet 101 and an air outlet 102; the drive motor 2 is mounted on the volute 1, and the output shaft of the drive motor 2 extends through the volute 1 into its interior; the impeller 3 is located inside the volute 1 and connected to the output shaft of the drive motor 2; and the collector 4 is located on the air inlet 101 of the volute 1. Thus, the drive motor 2 drives the impeller 3 to rotate at high speed. The impeller 3 performs work on the gas through rotation, converting mechanical energy into gas kinetic energy and pressure energy, drawing external gas from the air inlet 101 into the volute 1 and discharging it from the air outlet 102 of the volute 1. The specific gas flow is: collector 4 → air inlet 101 → impeller 3 → volute 1 → air outlet 102.

[0022] In this embodiment, the drive motor 2 is a permanent magnet motor, which has higher speed efficiency and smaller size than ordinary motors with the same rated power and number of poles, thus improving the overall efficiency of the fan.

[0023] In this embodiment, a motor junction box 201 is provided on the drive motor 2. The motor junction box 201 integrates a frequency converter module. The frequency converter module is integrated into the motor junction box 201 and can be connected to the enterprise's central control system as needed to upload parameters (which can be transmitted through the data transmission module) to achieve automatic control and intelligent operation and maintenance.

[0024] In this embodiment, the impeller 3 includes an arc-shaped front plate 301, a plurality of blades 302 and a flat rear plate 303. The plurality of blades 302 are evenly distributed in an involute manner along the circumferential direction of the arc-shaped front plate 301 and the flat rear plate 303, and the front end of the blades 302 is close to the axis of the impeller 3, while the rear end is far away from the axis of the impeller 3.

[0025] In this embodiment, the front section of the blade 302 is arc-shaped and the rear section is straight. The arc-shaped front section matches the arc-shaped front plate 301, and the straight section matches the flat rear plate 303, making it simpler to manufacture and lower in cost.

[0026] In this embodiment, the angle α between the leading edge of blade 302 and its extended leading edge line is 30°-50°, and the angle β between the trailing edge of blade 302 and its extended trailing edge line is 40°-60°. Angle α is preferably 41°, and angle β is preferably 49°. This angle design allows the airflow to transition smoothly along blade 302 during actual operation, reducing eddies and separation phenomena, and minimizing turbulence losses.

[0027] In this embodiment, the volute 1 is provided with feet in multiple directions along its outer periphery, allowing the fan to be installed in a more flexible and adaptable manner depending on the actual situation. Specifically, the volute 1 is provided with feet on the top, bottom, and right side, but not on the side of the air outlet 102. The length of each foot is at least one-third of the length of the volute 1 in that direction, and the feet should be centered as much as possible to ensure stable support for the volute 1.

[0028] In this embodiment, the base consists of two support members 5, which are respectively disposed on both sides of the volute 1. The bottom of the two support members 5 is horizontal, supporting the volute 1.

[0029] In this embodiment, the support member 5 includes a support plate 501 and a connecting plate 02. The support plate 501 and the connecting plate 02 are perpendicular to each other. The support plate 501 and the connecting plate 02 are L-shaped steel plates. The support member 5 is connected to the volute 1 through the connecting plate 02.

[0030] In this embodiment, the top edge of the connecting plate 02 is an arc-shaped edge that runs in the same direction as the volute 1.

[0031] In this embodiment, a centrifugal fan for heat exhaust in photovoltaic production also includes a filter screen 6. The filter screen 6 is disposed between the collector 4 and the air inlet 101. The filter screen 6 can block large particles of dust, hair and other solid pollutants, protect the impeller 3 from wear and extend the fan's life.

[0032] In this embodiment, the collector 4, the air inlet 101 and the air outlet 102 are all provided with flanges.

[0033] It should be noted that all standard parts used in this application can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A centrifugal fan for heat exhaust in photovoltaic production, characterized in that, include: A volute, wherein an air inlet and an air outlet are provided on the volute; A drive motor is mounted on a volute, and the output shaft of the drive motor extends through the volute and into the interior of the volute. An impeller, which is disposed inside the volute and connected to the output shaft of the drive motor; A collector, wherein the collector is disposed on the air inlet of the volute; The drive motor is a permanent magnet motor, and a motor junction box is provided on the drive motor, which integrates a frequency conversion module.

2. The centrifugal fan for heat exhaust in photovoltaic production according to claim 1, characterized in that, The impeller includes an arc-shaped front plate, several blades, and a flat rear plate. The blades are evenly distributed in an involute manner along the circumference of the arc-shaped front plate and the flat rear plate, and the front end of each blade is close to the axis of the impeller, while the rear end is far from the axis of the impeller.

3. The centrifugal fan for heat exhaust in photovoltaic production according to claim 2, characterized in that, The front section of the blade is arc-shaped, and the rear section is straight.

4. The centrifugal fan for heat exhaust in photovoltaic production according to claim 3, characterized in that, The angle α between the front end of the blade and the extension line of the front end of the blade is 30°-50°, and the angle β between the rear end of the blade and the extension line of the rear end of the blade is 40°-60°.

5. The centrifugal fan for heat exhaust in photovoltaic production according to claim 4, characterized in that, The volute is provided with feet in multiple directions along its outer periphery. Each foot is composed of two support members, which are respectively located on both sides of the volute.

6. The centrifugal fan for heat exhaust in photovoltaic production according to claim 5, characterized in that, The support member includes a support plate and a connecting plate, which are perpendicular to each other, and the connecting plate is connected to the volute.

7. The centrifugal fan for heat exhaust in photovoltaic production according to any one of claims 1-6, characterized in that, The centrifugal fan for heat exhaust in photovoltaic production also includes a filter screen, which is disposed between the collector and the air inlet.

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