Centrifugal wind wheel with energy-saving structure

Abstract

The utility model discloses a centrifugal wind wheel with an energy-saving structure, which belongs to the technical field of centrifugal fans and comprises an outer mounting ring, a rear mounting disc, impeller blades, a first extension portion and a second extension portion. The width of a second extension part is larger than that of a first extension part, so that the stress of the impeller blade is more uniform and reasonable, the conversion efficiency of wind energy is improved, the energy-saving effect is achieved, the impeller blade can be installed by inserting a plug-in lug in an installation assembly into a plug-in hole in an installation outer ring and a plug-in hole in an installation rear disc, and the installation efficiency of the impeller blade is improved. Different numbers of impeller blades can be installed according to actual conditions through the multiple inserting holes, the orientation of the impeller blades can be changed, so that the impeller blades are more convenient to install and disassemble, and adjustment can be conducted at any time according to needs.

Description

Technical Field

[0001] This utility model belongs to the field of centrifugal fan technology, specifically, it relates to a centrifugal impeller with an energy-saving structure. Background Technology

[0002] Multi-blade centrifugal fans are machines that rely on input mechanical energy to increase gas pressure and discharge gas; they are a type of driven fluid machinery. Centrifugal fans can use forward-curved or backward-curved blades, making them more adaptable to various airflow and pressure requirements. A forward-curved type refers to a fan with an impeller outlet angle greater than 90 degrees. A multi-blade centrifugal fan generally consists of a rotor, casing, collector, motor, and transmission components (such as the main shaft, pulleys, bearings, and V-belts). The impeller consists of a disc, blades (typically 8-16 blades), a cover, and a shaft disc. The casing consists of a volute, side plates, and support legs. Multi-blade centrifugal fans operate on the principle of converting kinetic energy into potential energy. They use a high-speed rotating impeller to accelerate the gas, then decelerate and change its flow direction, converting kinetic energy into potential energy (pressure). The difference between forward-curved and backward-curved types lies in the size of the impeller outlet angle. As shown in the figure, when the exit angle is greater than 90 degrees, it is called forward-leaning (forward-bending); when it is less than 90 degrees, it is called backward-leaning (backward-bending); and when it is equal to 90 degrees, it is called radial.

[0003] Chinese utility model patent CN203717384U discloses a forward-inclined multi-blade centrifugal fan, including a rotor comprising a front plate, a rear plate, and blades located between the front and rear plates. The rear plate has a shaft hole, and a ring-shaped reinforcing bulge protruding to the same side is stamped at the center of the rear plate. This reinforcing bulge and the shaft hole are arranged coaxially. In this utility model, by stamping the reinforcing bulge on the rear plate, the planar structure of the sheet metal part is altered, resulting in a ring-shaped reinforcing bulge on the rear plate. This significantly improves the overall impact resistance of the rear plate, making it less prone to bending and other forms of deformation. This reduces maintenance difficulty and costs to a certain extent, indirectly extending its service life.

[0004] The aforementioned existing technology also has the following drawbacks: the multiple blades on the wind turbine are of the same size and shape, but the force on each blade is smaller near the rear plate and larger far from the rear plate, resulting in uneven force distribution on the blades and thus lower wind energy conversion efficiency. Utility Model Content

[0005] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0006] To address the problem mentioned in the background art that multiple blades on a wind turbine are of the same size and shape, but the force on each blade is less near the rear disk and greater far from the rear disk, resulting in uneven force distribution on the blades and thus low wind energy conversion efficiency, this utility model adopts the following technical solution.

[0007] A centrifugal impeller with an energy-saving structure includes an outer mounting ring and a rear mounting plate arranged opposite to each other. Multiple impeller blades are detachably connected between the outer mounting ring and the rear mounting plate. Each impeller blade has a first extension and a second extension on the same side. The second extension is located on the outer wall of the impeller blade near the rear mounting plate, and the first extension is located on the outer wall of the impeller blade near the outer mounting ring. The width of the second extension is greater than the width of the first extension.

[0008] Preferably, an inclined surface is provided between the first extension and the second extension.

[0009] Preferably, the impeller blades, the outer mounting ring, and the rear mounting plate are provided with mounting components, which mount the impeller blades between the outer mounting ring and the rear mounting plate.

[0010] Preferably, a fixing component is installed between the outer mounting ring and the rear mounting plate, which tightens and fixes the rear mounting plate and the outer mounting ring.

[0011] Preferably, the mounting assembly includes insertion protrusions and insertion holes. Multiple insertion protrusions are fixedly connected to both ends of each impeller blade, and multiple insertion holes are provided on the mounting outer ring and the mounting rear plate. The multiple insertion protrusions at both ends of the impeller blade are respectively inserted into the insertion holes on the mounting outer ring and the mounting rear plate.

[0012] Preferably, the fixing assembly includes a connecting rod, a storage sleeve, a connector, a through hole, an internally threaded hexagonal head, and an external thread. A connecting plate is provided at the center of the mounting plate, and a drive shaft hole is provided at the center of the connecting plate and the mounting plate. The connecting plate has multiple second connecting holes, through which bolts pass to connect with the mounting plate. Multiple third connecting holes are provided on the connecting plate and the mounting outer ring. A connector is installed on the third connecting holes on the mounting outer ring and the connecting plate using bolts. The connector has a through hole, through which the bolt passes. A storage sleeve is fixedly connected to one side of the connector, and a connecting rod is fixedly connected to the other side of the connector. The connecting rod is inserted into the inside of the storage sleeve. An internally threaded hexagonal head is rotatably connected to the storage sleeve. The outer wall of the connecting rod has an external thread that is threaded to the internally threaded hexagonal head.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. The inclined surface design allows for a smooth transition between the first and second extensions. The width of the second extension is greater than that of the first extension, resulting in a more uniform and reasonable force distribution on the impeller blades. This improves the wind energy conversion efficiency and achieves energy-saving effects.

[0015] 2. The impeller blades can be installed by inserting the plug-in protrusions in the installation components into the plug-in holes on the outer ring and the rear plate. Multiple plug-in holes can be used to install different numbers of impeller blades according to the actual situation. The orientation of the impeller blades can also be changed to make installation and disassembly easier, and can be adjusted at any time as needed.

[0016] 3. The mounting outer ring and the mounting rear plate are fixed by the connecting rod, storage sleeve and connector in the fixed assembly, so as to fix the impeller blade. By rotating the internal thread hexagonal head and engaging the external thread, the connecting rod can be extended outward or retracted inward inside the storage sleeve, so as to adjust according to the length of the impeller blade, allowing the installation of impeller blades of different lengths. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of a centrifugal impeller structure with an energy-saving design according to this utility model;

[0018] Figure 2 This is a schematic diagram of the impeller blade structure in this utility model;

[0019] Figure 3 This is a schematic diagram of the rear disc installation structure in this utility model;

[0020] Figure 4 This is a schematic diagram of the fixing component structure in this utility model.

[0021] The correspondence between the labels and component names in the attached figures is as follows:

[0022] 100. Install outer ring; 101. Connecting plate; 102. Insertion hole; 104. Second connecting hole; 105. Third connecting hole; 106. Drive shaft hole; 107. Install rear plate;

[0023] 200. Impeller blade; 201. Insertion protrusion; 202. First extension; 203. Second extension;

[0024] 300. Connecting rod; 301. Storage sleeve; 302. Connector; 303. Through hole; 304. Internal thread hexagonal head; 305. External thread. Detailed Implementation

[0025] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0026] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0027] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments. The present invention provides the following embodiments.

[0028] like Figure 1 As shown, this is a schematic diagram of a centrifugal impeller with an energy-saving structure according to a preferred embodiment of the present invention. The centrifugal impeller with an energy-saving structure in this embodiment includes an outer mounting ring 100 and a rear mounting plate 107 arranged opposite to each other. A plurality of impeller blades 200 are detachably connected between the outer mounting ring 100 and the rear mounting plate 107. In this embodiment, by rotating the outer mounting ring 100, the connecting plate 101 and the impeller blades 200, the air can be transported in the same direction.

[0029] like Figure 2 As shown, this is a schematic diagram of the impeller blade structure in this embodiment. Each impeller blade 200 has a first extension 202 and a second extension 203 on the same side. The second extension 203 is located on the outer wall of the impeller blade 200 near the mounting rear disc 107, and the first extension 202 is located on the outer wall of the impeller blade 200 near the mounting outer ring 100. The width of the second extension 203 is greater than the width of the first extension 202, and an inclined surface is provided between the first extension 202 and the second extension 203. In this embodiment, the inclined surface makes the transition between the first extension 202 and the second extension 203 smooth. The fact that the width of the second extension 203 is greater than the width of the first extension 202 makes the force on the impeller blade 200 more uniform and reasonable, thereby improving the wind energy conversion efficiency and achieving energy saving.

[0030] like Figure 2 as well as Figure 3As shown, this is a schematic diagram of the installation component structure in this embodiment. Each impeller blade 200 has multiple insertion protrusions 201 fixedly connected to both ends. Multiple insertion holes 102 are provided on the mounting outer ring 100 and the mounting rear plate 107. The multiple insertion protrusions 201 at both ends of the impeller blade 200 are respectively inserted into the insertion holes 102 on the mounting outer ring 100 and the mounting rear plate 107. In this embodiment, the impeller blade 200 can be installed by inserting the insertion protrusions 201 into the insertion holes 102 on the mounting outer ring 100 and the mounting rear plate 107. Different numbers of impeller blades 200 can be installed according to the actual situation through the multiple insertion holes 102. The orientation of the impeller blades 200 can also be changed to make installation and disassembly easier, and can be adjusted at any time as needed.

[0031] It is worth noting that the aforementioned plug-in protrusion 201 and plug-in hole 102 are the mounting components in this embodiment. The mounting components include, but are not limited to, the plug-in protrusion 201 and plug-in hole 102. Any component that can connect the impeller blade 200 to the mounting outer ring 100 and the mounting rear disc 107 can be applied to this embodiment.

[0032] like Figure 3 as well as Figure 4 As shown, this is a schematic diagram of the fixing component structure in this embodiment. A connecting plate 101 is provided at the center of the mounting plate 107. A drive shaft hole 106 is provided at the center of both the connecting plate 101 and the mounting plate 107. Multiple second connecting holes 104 are provided on the connecting plate 101, through which bolts pass and connect to the mounting plate 107. Multiple third connecting holes 105 are provided on the connecting plate 101 and the mounting outer ring 100. Connecting heads 302 are bolted onto the third connecting holes 105 on the mounting outer ring 100 and the connecting plate 101. A through hole 303 is provided on the connecting head 302, through which bolts pass. A storage sleeve 301 is fixedly connected to one side of the connecting head 302, and the other side connects to... A connecting rod 300 is fixedly connected to the head 302. The connecting rod 300 is inserted into the inside of the receiving sleeve 301. An internally threaded hexagonal head 304 is rotatably connected to the receiving sleeve 301. The outer wall of the connecting rod 300 is provided with an external thread 305 that is threadedly connected to the internally threaded hexagonal head 304. In this embodiment, the mounting outer ring 100 and the mounting rear disc 107 are fixed together by the connecting rod 300, the receiving sleeve 301 and the connecting head 302, thereby fixing the impeller blade 200. By rotating the internally threaded hexagonal head 304 in conjunction with the external thread 305, the connecting rod 300 can be extended outward or retracted inward inside the receiving sleeve 301, thereby adjusting according to the length of the impeller blade 200, so that impeller blades 200 of different lengths can be installed.

[0033] It is worth noting that the connecting rod 300, the storage sleeve 301, the connector 302, the through hole 303, the internally threaded hexagonal head 304, and the external thread 305 are the fixing components in this embodiment. The fixing components include, but are not limited to, the connecting rod 300, the storage sleeve 301, the connector 302, the through hole 303, the internally threaded hexagonal head 304, and the external thread 305. Any component that can fix the impeller blade 200 can be used in this embodiment.

[0034] The above description, in conjunction with specific embodiments, provides a further detailed explanation of the present utility model. It should not be construed that the specific implementation of the present utility model is limited to these descriptions. For those skilled in the art, several simple deductions or substitutions can be made without departing from the concept of the present utility model, and all such deductions or substitutions should be considered to fall within the scope of protection defined by the claims submitted by the present utility model.

Claims

1. A centrifugal impeller with an energy-saving structure, comprising an outer mounting ring (100) and a rear mounting plate (107) arranged opposite to each other, wherein a plurality of impeller blades (200) are detachably connected between the outer mounting ring (100) and the rear mounting plate (107), characterized in that, Each impeller blade (200) has a first extension (202) and a second extension (203) on the same side. The second extension (203) is located on the outer wall of the impeller blade (200) near the mounting rear disc (107), and the first extension (202) is located on the outer wall of the impeller blade (200) near the mounting outer ring (100). The width of the second extension (203) is greater than the width of the first extension (202).

2. The centrifugal impeller with an energy-saving structure according to claim 1, characterized in that, An inclined surface is provided between the first extension (202) and the second extension (203).

3. The centrifugal impeller with an energy-saving structure according to claim 2, characterized in that, Mounting components are provided on the impeller blade (200), the mounting outer ring (100), and the mounting rear plate (107), which mount the impeller blade (200) between the mounting outer ring (100) and the mounting rear plate (107).

4. The centrifugal impeller with an energy-saving structure according to claim 3, characterized in that, A fixing component is installed between the mounting outer ring (100) and the mounting rear plate (107), which tightens and fixes the mounting rear plate (107) and the mounting outer ring (100).

5. The centrifugal impeller with an energy-saving structure according to claim 4, characterized in that, The mounting assembly includes insertion protrusions (201) and insertion holes (102). Multiple insertion protrusions (201) are fixedly connected to both ends of each impeller blade (200). Multiple insertion holes (102) are provided on the mounting outer ring (100) and the mounting rear plate (107). The multiple insertion protrusions (201) at both ends of the impeller blade (200) are respectively inserted into the insertion holes (102) on the mounting outer ring (100) and the mounting rear plate (107).

6. The centrifugal impeller with an energy-saving structure according to claim 5, characterized in that, The fixing assembly includes a connecting rod (300), a storage sleeve (301), a connector (302), a through hole (303), an internally threaded hexagonal head (304), and an external thread (305). A connecting plate (101) is located at the center of the mounting plate (107). A drive shaft hole (106) is located at the center of the connecting plate (101) and the mounting plate (107). Multiple second connecting holes (104) are provided on the connecting plate (101), through which bolts pass and connect to the mounting plate (107). Multiple third connecting holes (105) are provided on the connecting plate (101) and the mounting outer ring (100). The mounting outer ring (100) and the connecting... A connector (302) is bolted onto the third connecting hole (105) on the receiving plate (101). The connector (302) has a through hole (303). The bolt passes through the third connecting hole (105) and the through hole (303). A storage sleeve (301) is fixedly connected to one side of the connector (302), and a connecting rod (300) is fixedly connected to the other side of the connector (302). The connecting rod (300) is inserted into the inside of the storage sleeve (301). An internally threaded hexagonal head (304) is rotatably connected to the storage sleeve (301). The outer wall of the connecting rod (300) is provided with an external thread (305) that is threadedly connected to the internally threaded hexagonal head (304).

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