Efficient and energy-saving centrifugal fan

Abstract

The utility model discloses an efficient energy-saving centrifugal fan, which relates to the field of centrifugal fans, and comprises a driver, the side surface of the driver is connected with a fan shell, the air inlet of the fan shell is connected with a filter screen, a rotating mechanism comprises a bevel gear II, the bevel gear II rotates in a rotating groove II and a rotating groove I, and the bevel gear II is connected with the filter screen. The second bevel gear is connected to the side face of the first bevel gear in an engaged mode. According to the efficient and energy-saving centrifugal fan, when the rotating rod resets, the side face of the filter screen can be hammered, dust can be vibrated off through vibration generated after the filter screen is hammered, cleaning of the filter screen is achieved, the air inlet effect of the fan can be guaranteed after dust on the filter screen is cleaned, power consumption of the fan is reduced in a disguised mode, and energy saving is achieved; the cleaning plate and the rotating rod can clean dust on the filter screen at the same time, and the driver can rotate reversely, so that the air inlet of the fan shell starts to blow air, the effect of cleaning the filter screen by wind power is greatly improved, and the high efficiency and energy conservation of the fan are further improved.

Description

Technical Field

[0001] This utility model relates to the field of centrifugal fan technology, specifically to a high-efficiency and energy-saving centrifugal fan. Background Technology

[0002] A centrifugal fan is a mechanical device that uses the principle of centrifugal force to transport or pressurize gas. By rotating the impeller at high speed, the gas is thrown from the center of the impeller to the outer edge under the action of centrifugal force, thereby generating airflow and pressure.

[0003] Currently, centrifugal fans still have some shortcomings, such as the difficulty in cleaning the dust inside the dust cover, which increases the energy consumption of the centrifugal fan.

[0004] To overcome the problem of cleaning the dust cover of centrifugal fans, a Chinese patent (publication number: CN221442895U) discloses a high-efficiency and energy-saving centrifugal fan structure. A scraper is installed in the middle of the dust cover. The rotation of the scraper cleans the inside of the dust cover. Simultaneously, the rotation of the motor causes the fan blades to rotate in the opposite direction, blowing air out from the air inlet. This causes some of the dust on the inside to be blown to the outside, while the remaining dust falls into the collection box. Personnel then clean the dust on the outside, achieving both internal and external cleaning of the dust cover, enabling the centrifugal fan to operate efficiently and energy-savingly.

[0005] However, the centrifugal fans currently in use still have certain shortcomings. The document mentioned above suggests that cleaning the dust cover with a scraper can improve the energy efficiency of the fan, but the scraping method has large blind spots and it is difficult to clean the dust cover thoroughly. Furthermore, the dust that is not scraped off is relatively loose, and it is easier for the dust to enter the equipment during normal use, thereby increasing the power consumption of the fan. Therefore, the existing structure needs to be improved. Utility Model Content

[0006] The purpose of this invention is to provide a high-efficiency and energy-saving centrifugal fan to solve the problem mentioned in the background art that the filter screen of the centrifugal fan is inconvenient to clean dust.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a high-efficiency and energy-saving centrifugal fan, including a driver, a fan housing connected to the side of the driver, and a filter screen connected to the air inlet of the fan housing.

[0008] A fixing block is fixed to the side of the air inlet of the fan casing. A rotating groove is opened on the side of the fixing block. A rotating rod is rotatably connected inside the rotating groove. A knocking mechanism for cleaning the filter screen of the centrifugal fan is provided inside the fixing block.

[0009] The fan casing has a second rotating groove inside, and the second rotating groove is equipped with a rotating mechanism to improve the cleaning effect of the filter screen.

[0010] Furthermore, the striking mechanism includes an external block, which is fixed to the end of the rotating rod near the rotating groove, and the rotating groove has a rotating groove on its side.

[0011] Furthermore, a motor is installed inside the rotating groove, and a bevel gear is connected to the output end of the motor. A pressing block is fixed to the side of the bevel gear away from the motor, and a protrusion is fixed to the surface of the pressing block.

[0012] Furthermore, the rotating mechanism includes a second bevel gear, which rotates inside the second rotating groove and the first rotating groove. The second bevel gear is meshed with the side of the first bevel gear and is fixed to the side of the large gear.

[0013] Furthermore, the large gear rotates inside the second rotating groove, and the fan casing near the filter screen also has a third rotating groove, inside which a rotating block is rotatably connected.

[0014] Furthermore, a toothed ring is fixed to the side of the rotating block, and a filter screen is connected inside the toothed ring. The toothed ring is meshed with the side of the large gear. A cleaning plate is installed inside the fan housing, and the cleaning plate is attached to the side of the filter screen.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. This high-efficiency and energy-saving centrifugal fan can hammer the side of the filter screen when the rotating rod returns to its original position. The vibration generated by the hammering of the filter screen can shake off the dust, thus cleaning the filter screen. After the dust on the filter screen is cleaned, the air intake effect of the fan can be guaranteed, which indirectly reduces the power consumption of the fan and achieves energy saving. The cleaning plate and the rotating rod can clean the dust on the filter screen at the same time, and the driver can rotate in opposite directions, so that the air inlet of the fan casing starts to blow air, which greatly improves the effect of the air force on cleaning the filter screen and further enhances the high efficiency and energy saving of the fan.

[0017] 2. It is equipped with a rotating rod. By rotating the rod, the filter screen can be tapped. The tapping and vibration of the filter screen can achieve the dust removal effect and reduce the power consumption of the fan during operation.

[0018] 3. Equipped with a cleaning plate, which can improve the dust removal effect on the basis of cleaning the filter screen by rotating the rod, and can quickly clean the filter screen, thus improving the convenience of use.

[0019] 4. It is equipped with bevel gear one and bevel gear two. The meshing connection between bevel gear one and bevel gear two enables the rotating rod and the cleaning plate to clean the filter screen. One drive device achieves two effects, reducing the production cost of the device. Attached Figure Description

[0020] Figure 1This is a schematic diagram of the overall frontal three-dimensional structure of this utility model;

[0021] Figure 2 This is a side view of the overall three-dimensional structure of this utility model;

[0022] Figure 3 This is a magnified three-dimensional structural diagram of the filter screen of this utility model;

[0023] Figure 4 This is an enlarged three-dimensional structural diagram of the large gear of this utility model;

[0024] Figure 5 This is an enlarged three-dimensional structural diagram of the rotating rod of this utility model;

[0025] Figure 6 This is an enlarged three-dimensional structural diagram of the toothed ring of this utility model;

[0026] Figure 7 This is an enlarged three-dimensional structural diagram of the cleaning plate of this utility model.

[0027] In the diagram: 1. Driver; 2. Fan housing; 3. Filter screen; 201. Fixed block; 202. Rotating groove; 203. Rotating rod; 204. External block; 205. Rotating groove one; 206. Bevel gear one; 207. Extrusion block; 208. Rotating groove two; 209. Bevel gear two; 210. Large gear; 211. Rotating groove three; 212. Rotating block; 213. Gear ring; 214. Cleaning plate. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Example 1, such as Figures 1-5The present invention provides the following technical solution to address the problem of inconvenient dust cleaning of the centrifugal fan filter screen 3: a striking mechanism is disclosed, comprising a driver 1, a fan housing 2 connected to the side of the driver 1, a filter screen 3 connected to the air inlet of the fan housing 2, a fixing block 201 fixed to the side of the air inlet of the fan housing 2, a rotating groove 202 formed on the side of the fixing block 201, a rotating rod 203 rotatably connected inside the rotating groove 202, and a striking mechanism for cleaning the centrifugal fan filter screen 3 provided inside the fixing block 201. The striking mechanism includes an external block 204 fixed to the end of the rotating rod 203 near the rotating groove 202, a rotating groove 205 formed on the side of the rotating groove 202, a motor installed inside the rotating groove 205, a bevel gear 206 connected to the output end of the motor, a pressing block 207 fixed to the side of the bevel gear 206 away from the motor, and a protrusion fixed to the surface of the pressing block 207.

[0030] When the fan is in use, external air can be drawn in through the air inlet of the fan casing 2. When the air is drawn in, dust is filtered by the filter screen 3. To prevent dust accumulation on the filter screen 3 and increase power consumption, the motor can be started. When the motor starts, the output end can drive the bevel gear 206 to rotate. When the bevel gear 206 rotates, it can drive the pressing block 207 to rotate. When the pressing block 207 rotates, it can drive the protrusion to rotate to the side of the outer block 204 for pressing. When the outer block 204 is pressed, it can drive the rotating rod 203 to rotate. When rotating, it can rotate through the rotating groove 202. After the rotating rod 203 rotates to a certain angle, the bottom end can move away from the filter screen 3. When the protrusion of the pressing block 207 rotates out of the side of the outer block 204, the rotating rod 203 will quickly return to its original position under the action of gravity. When the rotating rod 203 returns to its original position, it can hammer the side of the filter screen 3. The vibration generated after the filter screen 3 is hammered can shake off the dust, thus cleaning the filter screen 3. After the dust in the filter screen 3 is cleaned, the air intake effect of the fan can be guaranteed, which indirectly reduces the power consumption of the fan and achieves energy saving.

[0031] Example 2, as follows Figure 3 , Figure 4 , Figure 6 and Figure 7The present invention provides the following technical solution to address the problem of insufficient cleaning effect of the centrifugal fan on the filter screen 3. Based on Embodiment 1, a rotating mechanism is disclosed: a second rotating groove 208 is provided inside the fan housing 2. A rotating mechanism to improve the cleaning effect of the filter screen 3 is installed inside the second rotating groove 208. The rotating mechanism includes a second bevel gear 209, which rotates within the second rotating groove 208 and the first rotating groove 205. The second bevel gear 209 is meshed with the side of the first bevel gear 206. The fan housing 2 has a bevel gear 209 fixed to the side of the large gear 210. The large gear 210 rotates inside the rotating groove 208. The fan housing 2 also has a rotating groove 3 211 inside near the filter screen 3. A rotating block 212 is rotatably connected inside the rotating groove 3 211. A gear ring 213 is fixed to the side of the rotating block 212. The filter screen 3 is connected inside the gear ring 213. The gear ring 213 is meshed with the side of the large gear 210. A cleaning plate 214 is installed inside the fan housing 2. The cleaning plate 214 is attached to the side of the filter screen 3.

[0032] The fan motor drives bevel gear 206 to rotate, which in turn drives bevel gear 209 to rotate. When bevel gear 209 rotates, it drives large gear 210 to rotate. When large gear 210 rotates, it can rotate through rotating groove 208. When large gear 210 rotates, it can mesh with and drive gear ring 213 to rotate. When gear ring 213 rotates, it drives rotating block 212 to rotate. When rotating block 212 rotates, it can rotate through rotating groove 211. When gear ring 213 rotates, it drives filter screen 3 to rotate. When filter screen 3 rotates, it can rub against the surface of cleaning plate 214. When cleaning plate 214 rubs against the filter screen 3, the dust on the surface of filter screen 3 can be cleaned. Cleaning plate 214 and rotating rod 203 can clean filter screen 3 at the same time. Moreover, the driver 1 can rotate in the opposite direction, so that the air inlet of the fan casing 2 starts to blow air, which greatly improves the effect of air force on cleaning filter screen 3 and further improves the efficiency and energy saving of the fan.

[0033] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An efficient and energy-saving centrifugal fan, comprising a driver (1), the driver (1) is connected with a fan shell (2) on the side, the fan shell (2) is connected with a filter screen (3) on the air inlet, characterized in that: The fan shell (2) is fixed with a fixed block (201) on the air inlet side, the fixed block (201) is provided with a rotating groove (202) on the side, the rotating groove (202) is rotatably connected with a rotating rod (203) inside, the fixed block (201) is provided with a knocking mechanism for cleaning the filter screen (3) of the centrifugal fan; The fan shell (2) is provided with a rotating groove two (208) inside, the rotating groove two (208) is provided with a rotating mechanism for improving the cleaning effect of the filter screen (3) inside.

2. A high efficiency, energy saving centrifugal fan as claimed in claim 1, wherein: The knocking mechanism comprises an external block (204), the external block (204) is fixed on the end of the rotating rod (203) close to the rotating groove (202), the rotating groove (202) is provided with a rotating groove one (205) on the side.

3. A high efficiency, energy saving centrifugal fan as claimed in claim 2, wherein: The rotating groove one (205) is provided with a motor inside, the motor output end is connected with a bevel gear one (206), the side away from the motor of the bevel gear one (206) is fixed with an extrusion block (207), the surface of the extrusion block (207) is fixed with a convex block.

4. The high efficiency and energy saving centrifugal fan according to claim 1, characterized in that: The rotating mechanism comprises a bevel gear two (209), the bevel gear two (209) rotates in the rotating groove two (208) and the rotating groove one (205) inside, the bevel gear two (209) is meshingly connected on the side of the bevel gear one (206), and the bevel gear two (209) is fixed on the side of the gear (210).

5. A high efficiency, energy saving centrifugal fan as claimed in claim 4, wherein: The gear (210) rotates in the rotating groove two (208) inside, the fan shell (2) is further provided with a rotating groove three (211) inside close to the filter screen (3), the rotating groove three (211) is rotatably connected with a rotating block (212) inside.

6. A high efficiency, energy saving centrifugal fan as claimed in claim 5, wherein: The rotating block (212) is fixed with a tooth ring (213) on the side, the tooth ring (213) is connected with a filter screen (3) inside, the tooth ring (213) is meshingly connected on the side of the gear (210), the fan shell (2) is provided with a cleaning plate (214) inside, the cleaning plate (214) is connected on the side of the filter screen (3).

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