CN216812196U - High-efficient centrifugal fan - Google Patents
High-efficient centrifugal fan Download PDFInfo
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- CN216812196U CN216812196U CN202123156563.4U CN202123156563U CN216812196U CN 216812196 U CN216812196 U CN 216812196U CN 202123156563 U CN202123156563 U CN 202123156563U CN 216812196 U CN216812196 U CN 216812196U
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Abstract
The utility model relates to the technical field of centrifugal fans, in particular to a high-efficiency centrifugal fan. The high-efficiency centrifugal fan comprises a base, a shell, a fixed impeller, a rotating impeller and a motor; the shell is arranged on the base and can be provided with an air inlet and an air outlet; the shell is hinged with a side cover at the outer side of the air inlet, an opening is arranged in the middle of the side cover, and a filter plate is arranged in the opening; the fixed impeller is arranged in the shell; the rotary impeller is arranged in the middle of the fixed impeller and used for introducing air at the air inlet, and the side end of the rotary impeller is fixedly connected with a rotating shaft penetrating through the shell; the motor is fixedly connected to the base and used for driving the rotating shaft to rotate. The utility model solves the problem that the air sucked by the existing centrifugal fan can not be completely discharged from the air vent.
Description
Technical Field
The utility model relates to the technical field of centrifugal fans, in particular to a high-efficiency centrifugal fan.
Background
The centrifugal fan is a driven fluid machine which increases the pressure of gas and discharges the gas by means of input mechanical energy. Centrifugal fans are widely used in ventilation, dust removal and cooling of factories, mines, tunnels, cooling towers, vehicles, ships and buildings, ventilation and draught of boilers and industrial furnaces, cooling and ventilation in air conditioning equipment and household electrical appliances, drying and sorting of grains, wind tunnel wind sources and inflation and propulsion of air cushion boats, and the like.
The air sucked by the existing centrifugal fan has a backflow condition inside the machine body, namely, the air cannot be completely discharged from the vent, and the working efficiency of the centrifugal fan is influenced.
Therefore, it is necessary to provide a technical solution to solve the above problems
SUMMERY OF THE UTILITY MODEL
The utility model provides a high-efficiency centrifugal fan, aiming at solving the problem that the working efficiency of the centrifugal fan is influenced because air sucked by the existing centrifugal fan is not completely discharged from a vent under the condition of backflow in a machine body.
In order to achieve the above object, the present invention provides a high efficiency centrifugal fan, which comprises a base, a casing, a fixed impeller, a rotating impeller and a motor, wherein:
the shell is arranged on the base, an air inlet is formed in the side end of the shell, and an air outlet is formed in the top of the shell; the shell is hinged with a side cover at the outer side of the air inlet, an opening is formed in the middle of the side cover, and a filter plate is installed in the opening; the fixed impeller is arranged in the shell and comprises two annular baffles and a plurality of first blades obliquely arranged between the two annular baffles; the rotary impeller is arranged in the middle of the fixed impeller and comprises a first mounting plate, a second mounting plate and a plurality of second blades, the second blades are obliquely arranged, two ends of the second blades are fixedly connected with the first mounting plate and the second mounting plate respectively, the second mounting plate is arranged on one side far away from the air inlet, and the side end of the second mounting plate is fixedly connected with a rotating shaft penetrating through the casing; the motor is fixedly connected to the base and used for driving the rotating shaft to rotate.
More specifically, a limiting plate formed by extending towards the inside of the opening is arranged on one side of the side cover close to the air inlet, and an internal thread is arranged in the opening; the filter plate is arranged in the opening, and one end of the filter plate is attached to the limiting plate; and a connecting ring is arranged on one side of the filter plate, which is far away from the air inlet, and the connecting ring is in threaded connection with the opening.
More specifically, the connecting ring is provided with a twist control handle.
More specifically, a cover plate is arranged on one side of the side cover, which is far away from the hinged part of the side cover and the shell, a plurality of bolt plates are arranged on the cover plate, and corresponding jacks are formed in the bolt plates; the shell is provided with a fixing block, the fixing block is provided with an extending hole corresponding to the plug pin plate, the top of the fixing block extends to form a fixing plate, and the fixing plate is detachably connected with a plug pin corresponding to the jack.
More specifically, the quantity of first blade and second blade is not less than twenty, and the inclination diverse of first blade, the inclination diverse of second blade, and the inclination opposite of the two.
More specifically, the casing is provided with a plurality of clamping rods in the casing, the fixed impeller is provided with clamping grooves corresponding to the clamping rods, and the clamping rods are matched with the clamping grooves to fix the position of the fixed impeller.
More specifically, a placing seat is arranged on the base, an arc-shaped groove matched with the shell is arranged on the placing seat, and the shell is arranged on the arc-shaped groove; one side of the shell, which is far away from the air inlet, is fixedly connected with a gear; a positioning plate is fixedly connected to the outer side of the placing seat, a round hole corresponding to the gear is formed in the middle of the positioning plate, and the gear is placed in the round hole; the locating hole has been seted up in the outside of round hole, be equipped with spring and locating piece in the locating hole, spring one end fixed connection be in on the wall of locating hole, the locating piece is located the spring is close to the one end of gear, and with the other end fixed connection of spring, its one end that is close to the gear is equipped with and is used for the joint the location portion of gear.
More specifically, one side of the placing seat, which is far away from the positioning plate, is provided with a baffle plate, and the baffle plate is fixedly connected to the placing seat and is contacted with the machine shell in a sticking manner.
The utility model relates to a high-efficiency centrifugal fan, which has the technical effects that:
1. this application adopts the design of fixed impeller and rotatory impeller, and centrifugal fan during operation, and the rotatory impeller of motor drive rotates to the air that drives the air intake constantly flows in and flows out in the clearance by a plurality of second blades, and when in the clearance through first blade, the air has obtained the initial velocity of directional air outlet, avoids the emergence of the backward flow condition, makes work efficiency improve.
2. This application has set up the side cap that articulates on the casing, compares with bolted connection's side cap in the conventional art, when taking out the inside impeller of casing, need not to carry out the bolt and dismantles, provides convenient for the staff.
Drawings
FIG. 1 is a schematic structural diagram of a high-efficiency centrifugal fan according to the present invention;
FIG. 2 is an enlarged schematic view at A in FIG. 1;
FIG. 3 is a schematic structural diagram of another view angle of a high efficiency centrifugal fan according to the present invention;
fig. 4 is a schematic structural diagram of an open state of a side cover in the high-efficiency centrifugal fan according to the present invention;
FIG. 5 is an exploded view of a high efficiency centrifugal fan according to the present invention;
FIG. 6 is an enlarged schematic view at B of FIG. 5;
fig. 7 is an enlarged schematic view at C in fig. 5.
The labels in the figure are:
1-a base; 2, a machine shell; 3, fixing the impeller; 4-rotating the impeller; 5, a motor; 6-side cover;
101-placing seat; 102-an arc-shaped groove; 103-a positioning plate; 104-a circular hole; 105-positioning holes; 106-a spring; 107-positioning blocks; 108-a positioning section; 109-baffle plate;
201-air inlet; 202-air outlet; 203, fixing blocks; 204-an access hole; 205-fixing plate; 206-plug pin; 207-gear;
301 — an annular baffle; 302 — a first blade;
401 — a first mounting plate; 402-a second mounting plate; 403 — a second blade; 404-a rotating shaft;
601-opening; 602-a filter plate; 603, a limiting plate; 604-connecting ring; 605-twist grip; 606-cover plate; 607-bolt plate; 608-jack;
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present; when an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the description of the embodiments of the present invention, it should be understood that the orientations and positional relationships indicated by the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like are based on the orientations and positional relationships shown in the drawings and are only for convenience in describing the embodiments of the present invention and for simplicity in description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
In order to more clearly illustrate the technical solution of the present invention, a preferred embodiment is provided below. With particular reference to fig. 1-7. The utility model provides a high-efficient centrifugal fan, includes base 1, casing 2, fixed impeller 3, rotatory impeller 4 and motor 5, wherein:
the casing 2 is arranged on the base 1, an air inlet 101 is arranged at the side end of the casing, and an air outlet 102 is arranged at the top of the casing; the casing 2 is hinged with a side cover 6 at the outer side of the air inlet 101, an opening 601 is arranged in the middle of the side cover 6, and a filter plate 602 is arranged in the opening 601; the fixed impeller 3 is installed inside the casing 2 and comprises two annular baffles 109301 and a plurality of first blades 302 obliquely installed between the two annular baffles 109301; the rotary impeller 4 is arranged in the middle of the fixed impeller 3 and comprises a first mounting plate 401, a second mounting plate 402 and a plurality of second blades 403, the plurality of second blades 403 are obliquely arranged, two ends of the plurality of second blades are respectively fixedly connected with the first mounting plate 401 and the second mounting plate 402, the second mounting plate 402 is arranged on one side far away from the air inlet 101, and the side end of the second mounting plate is fixedly connected with a rotating shaft 404 penetrating through the casing 2; the motor 5 is fixedly connected to the base 1, and is configured to drive the rotating shaft 404 to rotate.
The working process of the high-efficiency centrifugal fan comprises the following steps:
the motor 5 drives the rotating shaft 404 to rotate, so as to drive the rotating impeller 4 to integrally rotate, under the rotating action of the second blades 403, the air in the air inlet 101 continuously flows in and flows out from the gaps of the second blades 403, and when passing through the gaps of the first blades 302, the air obtains an initial speed pointing to the air outlet 102; the design of the fixed impeller 3 avoids the occurrence of backflow, so that the working efficiency is improved.
As a preferable scheme of this embodiment, a limit plate 603 extending into the opening 601 is provided on one side of the side cover 6 close to the air inlet 101, and an internal thread is provided in the opening 601; the filter plate 602 is arranged in the opening 601, and one end of the filter plate is abutted to the limit plate 603; a connecting ring 604 is arranged on one side of the filter plate 602 away from the air inlet 101, and the connecting ring 604 is in threaded connection with the opening 601. The limiting plate 603 and the connection ring 604 are respectively opposite to the two ends of the filter plate 602, so that the position of the filter plate 602 is fixed, the filter plate 602 is used for avoiding external impurities from entering the air inlet 101, and the rotary impeller 4 is prevented from being damaged.
As a preferable scheme of this embodiment, a twist control handle 605 is mounted on the connection ring 604. The twist-control handle 605 can apply a force better to control the connection ring 604 to be assembled and disassembled.
As a preferable scheme of this embodiment, a cover plate 606 is disposed on one side of the side cover 6 away from the hinge joint with the casing 2, a plurality of pins 206 are disposed on the cover plate 606, and corresponding insertion holes 608 are disposed on the pins 206 and 607; the casing 2 is provided with a fixing block 203, the fixing block 203 is provided with an extending hole 204 corresponding to the plug 206 plate 607, the top of the fixing block extends to form a fixing plate 205, and the fixing plate 205 is detachably connected with a plug 206 corresponding to the jack 608. Specifically, when the centrifugal fan works, the side cover 6 is in a closed state, at this time, the plug 206 and the plate 607 extend into the extension hole 204 and extend out from the other end, then the plug 206 is installed into the fixing plate 205, and the plug 206 penetrates through the insertion hole 608 to fix the position of the side cover 6, so that the side cover 6 is prevented from being opened outwards when the centrifugal fan works. It should be noted that another fixing plate 205 is disposed at the bottom of the fixing block 203, a through hole is disposed on the fixing plate 205, the plug 206 is inserted into the through hole on the fixing plate 205 at the top and extends out of the through hole on the fixing plate 205 at the bottom, and a fixing member for fixing the plug 206 is disposed below the fixing plate 205.
As a preferable configuration of the present embodiment, the number of the first blades 302 and the second blades 403 is not less than twenty, and the inclination angles of the first blades 302 are different from each other, and the inclination angles of the second blades 403 are different from each other, and the inclination angles are opposite to each other. With reference to fig. 5, by setting the angle, i.e. the inclination direction, of the first blade 302 and the second blade 403, it is ensured that the rotating impeller 4 efficiently introduces air, and the air has an initial velocity directed to the air outlet 102 after passing through the fixed impeller 3.
It should be noted that the fixed impeller 3 and the rotating impeller 4 are not in contact with each other, but the gap between the fixed impeller 3 and the rotating impeller 4 is small, so that it is ensured that the air introduced by the rotating impeller 4 can pass through the gap between the first impellers on the fixed impeller 3, and the occurrence of air blockage and the gap between the fixed impeller 3 and the rotating impeller 4 is avoided.
As a preferred scheme of this embodiment, the casing 2 is provided with a plurality of clamping bars inside thereof, the fixed impeller 3 is provided with clamping grooves corresponding to the clamping bars, and the clamping bars are matched with the clamping grooves to fix the position of the fixed impeller 3.
As a preferable scheme of this embodiment, a placing seat 101 is arranged on the base 1, an arc-shaped groove 102 adapted to the housing 2 is arranged on the placing seat 101, and the housing 2 is arranged on the arc-shaped groove 102; a gear 207 is fixedly connected to one side of the casing 2 far away from the air inlet 101; a positioning plate 103 is fixedly connected to the outer side of the placing seat 101, a circular hole 104 corresponding to the gear 207 is formed in the middle of the positioning plate 103, and the gear 207 is placed in the circular hole 104; the outer side of the round hole 104 is provided with a positioning hole 105, a spring 106 and a positioning block 107 are arranged in the positioning hole 105, one end of the spring 106 is fixedly connected to the wall surface of the positioning hole 105, the positioning block 107 is arranged at one end, close to the gear 207, of the spring 106 and is fixedly connected with the other end of the spring 106, and a positioning portion 108 used for clamping the gear 207 is arranged at one end, close to the gear 207, of the positioning block. It should be noted that, the conventional centrifugal fans are all fixedly connected to the base 1, and the positions and the directions of the conventional centrifugal fans are fixed, so that when the direction is adjusted, the installation positions of the centrifugal fans and the base 1 need to be adjusted again after being detached. Therefore, in this embodiment, by adopting the design of the gear 207 and the positioning block 107, when the positioning block 107 is pressed downward to be out of the gap between the two teeth of the gear 207, the entire housing 2 can rotate, and after the air outlet 102 is adjusted to a proper position, the positioning block 107 is released, so that the spring 106 springs up the positioning block 107, and the positioning portion 108 is inserted into the gap between the two teeth of the gear 207 to limit the rotation of the gear 207, i.e., to limit the rotation of the housing 2, thereby completing the direction adjustment of the housing 2.
As a preferable solution of this embodiment, a baffle 109 is disposed on a side of the placing seat 101 away from the positioning plate 103, and the baffle 109 is fixedly connected to the placing seat 101 and contacts with the casing 2. The gear 207 is matched with the round hole 104 to limit the movement of the casing 2 in the front-back direction and the up-down direction, and the baffle 109 is matched with the positioning plate 103 to limit the movement of the casing 2 in the left-right direction, so that the whole position of the centrifugal fan is fixed, and the normal operation of the centrifugal fan is ensured.
As a preferable solution of this embodiment, the inside of the casing 2 may be filled with a sound-proof sponge. When the centrifugal fan works, the rotary impeller 4 keeps a rotary state, noise can be generated to a certain degree, and the sound insulation sponge is filled to effectively block the noise generated inside the casing 2.
The utility model relates to a high-efficiency centrifugal fan, which solves the problem that the working efficiency of the centrifugal fan is influenced because air sucked by the conventional centrifugal fan is not completely discharged from a vent under the condition of backflow in a machine body through reasonable structural arrangement.
The above description is only exemplary of the present invention, and the structure is not limited to the above-mentioned shapes, and any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The utility model provides a high-efficient centrifugal fan which characterized in that: including base, casing, fixed impeller, rotatory impeller and motor, wherein:
the shell is arranged on the base, an air inlet is formed in the side end of the shell, and an air outlet is formed in the top of the shell; the shell is hinged with a side cover at the outer side of the air inlet, an opening is formed in the middle of the side cover, and a filter plate is installed in the opening; the fixed impeller is arranged in the shell and comprises two annular baffles and a plurality of first blades obliquely arranged between the two annular baffles; the rotary impeller is arranged in the middle of the fixed impeller and comprises a first mounting plate, a second mounting plate and a plurality of second blades, the second blades are obliquely arranged, two ends of the second blades are fixedly connected with the first mounting plate and the second mounting plate respectively, the second mounting plate is arranged on one side far away from the air inlet, and the side end of the second mounting plate is fixedly connected with a rotating shaft penetrating through the casing; the motor is fixedly connected to the base and used for driving the rotating shaft to rotate.
2. The high-efficiency centrifugal fan according to claim 1, wherein: a limiting plate formed by extending the side cover into the opening is arranged on one side of the side cover close to the air inlet, and an internal thread is arranged in the opening; the filter plate is arranged in the opening, and one end of the filter plate is attached to the limiting plate; and a connecting ring is arranged on one side of the filter plate, which is far away from the air inlet, and the connecting ring is in threaded connection with the opening.
3. The high-efficiency centrifugal fan according to claim 2, wherein: and a twist control handle is arranged on the connecting ring.
4. The high-efficiency centrifugal fan according to claim 2, wherein: a cover plate is arranged on one side of the side cover, which is far away from the hinged part of the side cover and the shell, a plurality of bolt plates are arranged on the cover plate, and corresponding jacks are formed in the bolt plates; the shell is provided with a fixing block, the fixing block is provided with an extending hole corresponding to the plug pin plate, the top of the fixing block extends to form a fixing plate, and the fixing plate is detachably connected with a plug pin corresponding to the jack.
5. The high-efficiency centrifugal fan according to claim 1, wherein: the quantity of first blade and second blade is not less than twenty pieces, and the inclination of first blade is diverse, the inclination of second blade is diverse, and the inclination of the two is opposite.
6. The high-efficiency centrifugal fan according to claim 1, wherein: the casing is provided with a plurality of clamping rods in the casing, the fixed impeller is provided with clamping grooves corresponding to the clamping rods, and the clamping rods are matched with the clamping grooves to fix the position of the fixed impeller.
7. The high-efficiency centrifugal fan according to claim 1, wherein: the base is provided with a placing seat, the placing seat is provided with an arc-shaped groove matched with the shell, and the shell is arranged on the arc-shaped groove; one side of the shell, which is far away from the air inlet, is fixedly connected with a gear; a positioning plate is fixedly connected to the outer side of the placing seat, a round hole corresponding to the gear is formed in the middle of the positioning plate, and the gear is placed in the round hole; the locating hole has been seted up in the outside of round hole, be equipped with spring and locating piece in the locating hole, spring one end fixed connection be in on the wall of locating hole, the locating piece is located the spring is close to the one end of gear, and with the other end fixed connection of spring, its one end that is close to the gear is equipped with and is used for the joint the location portion of gear.
8. The high efficiency centrifugal fan of claim 7, wherein: one side of the placing seat, which is far away from the positioning plate, is provided with a baffle plate, and the baffle plate is fixedly connected to the placing seat and is attached to and contacted with the machine shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123156563.4U CN216812196U (en) | 2021-12-13 | 2021-12-13 | High-efficient centrifugal fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123156563.4U CN216812196U (en) | 2021-12-13 | 2021-12-13 | High-efficient centrifugal fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216812196U true CN216812196U (en) | 2022-06-24 |
Family
ID=82054161
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123156563.4U Active CN216812196U (en) | 2021-12-13 | 2021-12-13 | High-efficient centrifugal fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216812196U (en) |
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2021
- 2021-12-13 CN CN202123156563.4U patent/CN216812196U/en active Active
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