CN218717652U - Energy-saving variable-frequency centrifugal fan - Google Patents
Energy-saving variable-frequency centrifugal fan Download PDFInfo
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- CN218717652U CN218717652U CN202222660263.8U CN202222660263U CN218717652U CN 218717652 U CN218717652 U CN 218717652U CN 202222660263 U CN202222660263 U CN 202222660263U CN 218717652 U CN218717652 U CN 218717652U
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Abstract
The utility model discloses an energy-saving frequency conversion centrifugal fan, including spiral case, collector and transmission assembly, the inside fixed impeller that is provided with of spiral case, spiral case one side is provided with the collector, the spiral case opposite side is provided with the transmission assembly, the collector is the awl arc type, the inside section of accelerating and the changeover portion of being connected with the section of accelerating of collector, collector one side is provided with the flange, the collector outward flange is provided with the reinforced rib board, the impeller includes arc front bezel, a plurality of hypsokinesis arc plate type blade and dull and stereotyped back plate, the import erection angle of hypsokinesis arc plate type blade is 20-30, the export erection angle of hypsokinesis arc plate type blade is 45-55. The utility model provides a collector and impeller link up well to make the reduction of gas flow loss under the cooperation of section and changeover portion with higher speed, make the motor can obtain more amount of wind and bigger wind pressure under same rotational speed, more energy-efficient.
Description
Technical Field
The utility model relates to a centrifugal fan field especially relates to an energy-saving variable frequency 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.
The traditional centrifugal fan adopts a wind shield or an air valve to cut off to adjust the air quantity, and the principle is to increase or reduce the pipeline resistance to ensure that the working point of the fan moves on a performance curve, but the extra resistance increases the loss of electric energy. Therefore, the development of an energy-saving centrifugal fan is imperative.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an energy-saving frequency conversion centrifugal fan, fan itself has higher efficiency, uses inverter motor as the power supply simultaneously, energy loss when having reduced air regulation, and the efficient of this fan, the amount of wind is big, the pressure of the wind is high, the noise is low, can be according to the reasonable adjustment consumption of different operating modes simultaneously, and is more energy-conserving.
To achieve the above object, the utility model provides a: an energy-saving variable-frequency centrifugal fan comprises a volute, a current collector and a transmission assembly, wherein an impeller is fixedly arranged in the volute, the current collector is arranged on one side of the volute, the transmission assembly is arranged on the other side of the volute, the current collector is in a conical arc shape, an accelerating section and a transition section connected with the accelerating section are arranged in the current collector, a flange is arranged on one side of the current collector, and reinforcing rib plates are arranged on the outer edge of the current collector.
Preferably, the included angle between the acceleration section and the horizontal is 10-30 degrees, the included angle between the transition section and the horizontal is 15-35 degrees, the acceleration section is located on the outer portion of the volute, and the transition section is located on the inner portion of the volute.
Preferably, the accelerating section is smoothly connected with the transition section.
Preferably, the impeller comprises an arc-shaped front disc, a plurality of backward inclined arc plate type blades and a flat plate rear disc, the inlet installation angle of the backward inclined arc plate type blades is 20-30 degrees, and the outlet installation angle of the backward inclined arc plate type blades is 45-55 degrees.
Preferably, an air inlet is formed in one side of the volute, an air outlet is formed in the top of the volute, and the collector is fixedly arranged on the air inlet.
Preferably, an air valve is arranged at the joint of the acceleration section and the transition section; be provided with the mechanism of keeping out the wind on the air outlet, the mechanism of keeping out the wind includes fixed frame, fixed frame inside is provided with the deep bead.
Preferably, the fixing frame is provided with an adjusting nut, and the wind shield is provided with a plurality of threaded holes matched with the adjusting nut for use.
Preferably, at least one sound insulation layer is fixedly arranged on the accelerating section, the inner side of the transition section and the inner wall of the volute, and the thickness of the sound insulation layer is 1-2cm.
Preferably, the soundproof layer is made of soundproof cotton.
Preferably, the transmission assembly comprises a transmission set, a belt pulley, a belt and a motor, an output shaft of the motor is connected with the belt, the belt is connected with the belt pulley, the belt pulley is connected with the transmission set, and the transmission set is connected with the impeller.
Preferably, energy-saving frequency conversion centrifugal fan still includes guide rail, pedestal and base, the motor sets up on the guide rail, the transmission group sets up on the pedestal, spiral case, guide rail and pedestal all set up on the base.
Optionally, the transmission set is fixed to the pedestal by bolts or welding, the motor is fixed to the guide rail by bolts or welding, and the volute is fixed to the base by bolts or welding.
Preferably, the motor is a variable frequency motor.
The utility model has the advantages that:
1. the utility model adopts the variable frequency motor (refer to the standard: YE3 series) as the power source, realizes the adjustment of different air volume and air pressure through the speed regulating function of the variable frequency motor, does not change the characteristic curve of the pipeline, greatly reduces the generated extra resistance loss, and is more energy-saving.
2. The utility model provides a collector well links up with the impeller to make the reduction of gas flow loss under the cooperation of accelerating section and changeover portion, make the motor can obtain more amount of wind and bigger wind pressure under same rotational speed, it is more energy-efficient.
3. The utility model discloses all be provided with the puigging in collector and spiral case, the fan can be absorbed by the puigging at the noise that the during operation produced, possesses the function of making an uproar of falling.
The features and advantages of the present invention will be described in detail by the embodiments with reference to the accompanying drawings.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
fig. 2 is a partial cross-sectional view of the present invention;
fig. 3 is a cross-sectional view of the current collector of the present invention;
fig. 4 is a front view of the current collector of the present invention;
fig. 5 is a sectional view of the impeller of the present invention;
fig. 6 is a partial cross-sectional view of the impeller of the present invention;
fig. 7 is a partial cross-sectional view of the impeller of the present invention;
fig. 8 is a partial sectional view of the impeller of the present invention.
In the figure: 1-volute, 2-impeller, 3-current collector, 4-transmission group, 5-belt pulley, 6-belt, 7-sound insulation layer, 8-motor, 9-guide rail, 10-pedestal, 11-base, 12-wind shielding mechanism, 13-air valve, 101-flange, 102-accelerating section, 103-transition section, 104-reinforcing rib plate, 105-air inlet, 106-air outlet, 107-fixing frame, 108-wind shielding plate, 109-adjusting nut, 110-threaded hole, 201-arc front disc, 202-rear inclined arc plate type blade and 203-flat plate rear disc.
Detailed Description
In order to make the utility model realize, the technical means, the creation characteristics, the achievement purpose and the efficacy are easy to understand and understand, the utility model is further explained by combining the specific implementation mode.
As shown in fig. 1 to 6, an energy-saving frequency conversion centrifugal fan includes a volute 1, a current collector 3 and a transmission assembly, the transmission assembly includes a transmission set 4, a belt pulley 5, a belt 6 and a motor 8, an output shaft of the motor 8 is connected with the belt 6, the belt 6 is connected with the belt pulley 5, the belt pulley 5 is connected with the transmission set 4, the transmission set 4 is connected with an impeller 2, the impeller 2 is fixedly disposed inside the volute 1 through the transmission set 4, the current collector 3 is disposed on one side of the volute 1, and the transmission assembly is disposed on the other side of the volute 1.
In this embodiment, the current collector 3 is a conical arc, the current collector 3 is hollow inside, the accelerating section 102 and the transition section 103 connected to the accelerating section 102 are arranged inside the current collector, the joint between the accelerating section 102 and the transition section 103 is smooth, specifically, both the accelerating section 102 and the transition section 103 are of an arc structure, the included angle between the accelerating section 102 and the horizontal is 12 degrees, the included angle between the transition section 103 and the horizontal is 20 degrees, the molded lines of the accelerating section 102 and the transition section 103 conform to the gas flow rule, so that the loss of gas generated when the gas flows into and flows out of the current collector 3 is small, the molded lines of the transition section 103 are well connected with the impeller 2, the gas smoothly flows into the impeller 2, the loss of the gas when the gas flows into the impeller 2 is reduced, and the energy saving and the efficiency is higher.
In this embodiment, a flange 101 is disposed on one side of the current collector 3, a reinforcing rib 104 is disposed on an outer edge of the current collector 3, the end of the current collector 3 where the flange 101 is located has a smaller caliber than that of the reinforcing rib 104, the current collector 3 is fixedly connected to the volute 1 through the cooperation of the reinforcing rib 104 and a bolt, and the reinforcing rib 104 reinforces the connection strength of the current collector 3, so that the current collector 3 can be stably fixed to the volute 1.
In this embodiment, the impeller 2 includes an arc front disk 201, a plurality of backward inclined arc plate type blades 202 and a flat rear disk 203, an inlet installation angle of the backward inclined arc plate type blades 202 is 25 °, an outlet installation angle of the backward inclined arc plate type blades 202 is 51 °, a flow passage formed by the arc front disk 201, the backward inclined arc plate type blades 202 and the flat rear disk 203 is a divergent type, and gradually expands from the center of the impeller 2 to the outer side, so that gas flow loss can be reduced; the molded line of the arc-shaped front disc 201 is well connected with the molded line of the transition section 103, so that gas smoothly flows into the impeller 2; the blades of the impeller 2 are arc-plate type blades, and compared with airfoil type blades, the blade is simpler to manufacture and lower in cost.
In this embodiment, an air inlet 105 is disposed at one side of the scroll casing 1, an air outlet 106 is disposed at the top of the scroll casing 1, the current collector 3 is fixedly disposed on the air inlet 105 and is communicated with the inside of the scroll casing 1, the acceleration section 102 is located outside the scroll casing 1, and the transition section 103 is located inside the scroll casing 1.
Further, in order to promote and fall the function of making an uproar, the utility model discloses all fix the puigging 7 that sets up the one deck on accelerating section 102, changeover portion 103 inboard and spiral case 1 inner wall, puigging 7 adopts soundproof cotton to make, the thickness of puigging 7 is 1cm, and the fan can be absorbed by puigging 12 at the noise that the during operation produced, makes it possess and fall the function of making an uproar.
Further, in order to control the size of air output, the utility model discloses the fixed mechanism 12 that keeps out the wind that is provided with on the air outlet, mechanism 12 that keeps out the wind includes fixed frame 107, is provided with square through hole in the middle of the fixed frame 107, and square through hole is unanimous with air outlet 106 area and is located air outlet 106 top, the inside deep bead 108 that is provided with of fixed frame 107, deep bead 108 swing joint is in fixed frame 107, be provided with adjusting nut 109 on the fixed frame 107, be provided with a plurality of screw holes 110 that use with adjusting nut 109 cooperation on the deep bead 108, can fix deep bead 108 in fixed frame 107 through adjusting nut 109 and screw hole 110's cooperation, can reach the purpose of opening air outlet 106 size through the position of adjusting deep bead 108 to reach the purpose of controlling the air output.
Further, in order to control the size of intake, the utility model discloses be provided with blast gate 13 in the junction of section 102 and changeover portion 103 with higher speed, blast gate 13 comprises a plurality of blades, blast gate 13 is still including the adjustment mechanism that is used for adjusting the blade and control adjustment mechanism's motor (adjustment mechanism and motor are prior art and do not mark in the picture), blade swing joint is in the junction of section 102 with higher speed and changeover portion 103, control blade's opening angle, can reach the purpose that changes the wind channel size, blast gate 13 can cooperate motor 8 to control the size of amount of wind together, reach energy-conserving purpose.
In this embodiment, energy-saving frequency conversion centrifugal fan still includes guide rail 9, pedestal 10 and base 11, motor 8 passes through welded fastening and sets up on guide rail 9, transmission group 4 passes through welded fastening and sets up on pedestal 10, spiral case 1, guide rail 9 and pedestal 10 all set up on base 11 through welded fastening.
In this embodiment, the motor 8 adopts a YE3 series variable frequency motor, and can carry out frequency conversion on the air volume of the fan.
The utility model relates to an energy-saving variable frequency centrifugal fan, its theory of operation is:
the motor 8 works to drive the belt 6 to rotate, the belt 6 rotates to drive the belt pulley 5 to rotate, the belt pulley 5 rotates to drive the transmission set 4 to rotate, the transmission set 4 rotates to drive the impeller 2 to rotate, the impeller 2 rotates to suck external wind from one end of the current collector 3 provided with the flange 101 and then enters the acceleration section 102, because the included angle between the profile of the acceleration section and the horizontal line is small, the length is moderate, the gas is gradually accelerated when entering the current collector 3, meanwhile, because the gas speed is gradually increased, the static pressure is gradually reduced, a pressure gradient is generated along the gas inflow direction, the gas flow loss is reduced, the profile of the transition section 103 of the current collector 3 is well connected with the profile of the arc front disc 201 of the impeller 2, the gas smoothly flows into the impeller 2, in a divergent flow channel formed by the arc front disc 201, the backward inclined arc plate type blades 202 and the flat back disc 203, the gas obtains mechanical energy through the centrifugal effect, the conversion of the pressure in the divergent volute is completed, the gas smoothly flows out from the air outlet 106, the gas flow loss is reduced, the novel fan adopts the YE3 series variable frequency motor as a power source, the speed regulation function of the variable frequency motor and the air pressure valve is matched with the additional variable-speed regulation curve 13, and the energy-saving pipeline, and the pipeline can greatly reduce the energy-saving pipeline.
The above description is only a preferred embodiment of the present invention, and should not be construed as limiting the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. The energy-saving variable-frequency centrifugal fan is characterized in that the current collector is conical-arc-shaped, an accelerating section and a transition section connected with the accelerating section are arranged in the current collector, a flange is arranged on one side of the current collector, and reinforcing rib plates are arranged on the outer edge of the current collector.
2. The energy-saving variable frequency centrifugal fan according to claim 1, wherein the angle between the accelerating section and the horizontal is 10-30 °, and the angle between the transition section and the horizontal is 15-35 °.
3. The energy-saving variable frequency centrifugal fan according to claim 2, wherein the impeller comprises an arc front disk, a plurality of back-inclined arc plate type blades and a flat back disk, the inlet installation angle of the back-inclined arc plate type blades is 20-30 degrees, and the outlet installation angle of the back-inclined arc plate type blades is 45-55 degrees.
4. The energy-saving variable frequency centrifugal fan according to claim 3, wherein an air inlet is formed at one side of the volute, an air outlet is formed at the top of the volute, and the collector is arranged on the air inlet.
5. The energy-saving variable frequency centrifugal fan according to claim 4, wherein an air valve is arranged at the joint of the accelerating section and the transition section; the air outlet is provided with a wind shielding mechanism, the wind shielding mechanism comprises a fixed frame, and a wind shield is arranged in the fixed frame.
6. The energy-saving variable frequency centrifugal fan according to claim 5, wherein the fixing frame is provided with an adjusting nut, and the wind screen is provided with a plurality of threaded holes matched with the adjusting nut.
7. The energy-saving variable frequency centrifugal fan according to claim 6, wherein at least one sound insulation layer is disposed on the accelerating section, the inner side of the transition section and the inner wall of the volute, and the thickness of the sound insulation layer is 1-2cm.
8. The energy-saving variable frequency centrifugal fan according to claim 7, wherein the transmission assembly comprises a transmission set, a belt pulley, a belt and a motor, an output shaft of the motor is connected with the belt, the belt is connected with the belt pulley, the belt pulley is connected with the transmission set, and the transmission set is connected with the impeller.
9. The energy-saving frequency conversion centrifugal fan according to claim 8, further comprising a guide rail, a pedestal and a base, wherein the motor is disposed on the guide rail, the transmission set is disposed on the pedestal, and the volute, the guide rail and the pedestal are disposed on the base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222660263.8U CN218717652U (en) | 2022-10-10 | 2022-10-10 | Energy-saving variable-frequency centrifugal fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222660263.8U CN218717652U (en) | 2022-10-10 | 2022-10-10 | Energy-saving variable-frequency centrifugal fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218717652U true CN218717652U (en) | 2023-03-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222660263.8U Active CN218717652U (en) | 2022-10-10 | 2022-10-10 | Energy-saving variable-frequency centrifugal fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218717652U (en) |
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2022
- 2022-10-10 CN CN202222660263.8U patent/CN218717652U/en active Active
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