CN102588335B - Energy-saving draught fan with high temperature resistance and double effect - Google Patents

Energy-saving draught fan with high temperature resistance and double effect Download PDF

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Publication number
CN102588335B
CN102588335B CN201210058185.2A CN201210058185A CN102588335B CN 102588335 B CN102588335 B CN 102588335B CN 201210058185 A CN201210058185 A CN 201210058185A CN 102588335 B CN102588335 B CN 102588335B
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runner
blade
casing
impeller
leaf dish
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CN201210058185.2A
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CN102588335A (en
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林钧浩
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Yantai top fan manufacturing Co., Ltd.
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林钧浩
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Abstract

The invention discloses an energy-saving draught fan with high temperature resistance and double effect. The energy-saving draught fan has the characteristics that a blade is in the double-layer clamp wall type; a blade inner side flow channel is formed by the double-layer clamp wall; a blade inner side flow channel inlet which is communicated with an impeller rear side air inlet is arranged at the radial front end of the blade inner side flow channel; a blade inner side flow channel outlet is arranged at the radial rear part of the blade inner side flow channel; a bladed disc air outlet is arranged at the radial rear part of a bladed disc; and the bladed disc air outlet is communicated with the blade inner side flow channel outlet which is not communicated with an impeller flow channel. According to the energy-saving draught fan, a plurality of high-temperature materials with higher temperature can be directly sucked and discharged, and the sucked and discharged various high-temperature materials have higher wind pressure and stronger discharge capacity, therefore, the energy-saving blower with high temperature resistance and double effect is suitable for the use demands that the high-temperature materials can be sucked and discharged and transmitted by people by using a long pipeline in a long distance.

Description

High temperature resistant dual-effect energy-saving blower fan
Technical field
The present invention relates to a kind of high temperature resistant dual-effect energy-saving blower fan, belong to gas field of mechanical technique.
Background technique
Rear flow fan that now people use, synchronous rear flow fan, isolation shunting material discharging machine etc. can only the general high-temperature materials of suction, although and the high corrosion materials discharging machine of high temperature can the multiple higher temperature high-temperature material of suction, but owing to being isolated the restriction of shunt, when the various high-temperature material of suction, material discharge gate outlet blast is low, discharge capacity is poor, conveying high-temperature gas high-temp solid material ability, lift is near, can not suitable remote long pipeline conveying high-temperature gas material and the needs of high-temp solid material.
Summary of the invention
The invention reside in the shortcoming that overcomes above-mentioned prior art, and provide a kind of directly high-temperature material of the multiple higher temperature of suction, the various high-temperature materials that can ensure again suction have higher blast, there is stronger discharge capacity, can adapt to the high temperature resistant dual-effect energy-saving blower fan of the abundant suction of people and remote long pipeline conveying high-temperature material use needs.
Object of the present invention can reach by following technical measures:
A kind of high temperature resistant dual-effect energy-saving blower fan, comprise casing, casing axial front side intake grill, the axial rear side intake grill of casing, casing is anterior interior side runner axially, the axial posterior medial runner of casing, casing is anterior interior side runner exhaust outlet axially, the axial posterior medial runner of casing exhaust outlet, impeller, leaf dish, blade, impeller rear side intake grill, impeller channel, impeller channel import, impeller channel outlet, be characterized in, blade is Double-layer clamp wall type, double-deck double wall forms side runner in blade, in blade, side runner radial front end is provided with side runner import in blade, in blade, side runner import is communicated with impeller rear side intake grill, side runner is radially provided with runner exit inside blade in rear portion in blade, impeller leaf disc radial rear portion is provided with the leaf dish exhaust outlet of Way out towards axial rearward direction, leaf dish exhaust outlet is communicated with runner exit inside blade, be not communicated with impeller channel, impeller rear side intake grill is not communicated with impeller channel, in blade, side runner is not directly communicated with impeller channel.
In order further to realize the object of the invention, leaf dish is Double-layer clamp wall construction formula, double-deck double wall forms side runner in leaf dish, in leaf dish, side runner is radially provided with side runner import in leaf dish in front portion, in leaf dish, side runner import is communicated with impeller rear side intake grill, side runner is radially provided with runner exit inside leaf dish in rear portion in leaf dish, and runner exit is communicated with leaf dish exhaust outlet inside leaf dish.
In order further to realize the object of the invention, the double wall of blade is provided with blade double wall air hole, and blade double wall air hole inner side is communicated with side runner in blade, and outside is communicated with impeller channel.
In order further to realize the object of the invention, leaf dish exhaust outlet outer circular edge is provided with the leaf dish exhaust outlet outer rim wall that keeps out the wind, and leaf dish exhaust outlet inner circle edge is provided with the leaf dish exhaust outlet inner edge wall that keeps out the wind.
In order further to realize the object of the invention, the axial posterior medial runner of casing is located at the space position of internal side of shell impeller shaft to rear side, and the axial posterior medial runner of the casing exhaust outlet of the axial posterior medial runner of casing radial extremity is radial.
In order further to realize the object of the invention, the axial posterior medial runner of casing is located at the space position of internal side of shell impeller shaft to rear side, and the axial posterior medial runner of the casing exhaust outlet of the axial posterior medial runner of casing radial extremity is axial type.
In order further to realize the object of the invention, casing is Double-layer clamp wall type, double-deck double wall forms side runner in enclosure wall, and in enclosure wall, side runner is provided with in enclosure wall runner exit inside side runner import and enclosure wall, is provided with side runner guide plate in enclosure wall in enclosure wall in side runner.
In order further to realize the object of the invention, casing is Double-layer clamp wall type, double-deck double wall forms side runner in enclosure wall, side runner is provided with in enclosure wall runner exit inside side runner import and enclosure wall in enclosure wall, inside enclosure wall runner exit with the following current of the axial posterior medial runner of casing exhaust outlet to connection.
In order to narrate conveniently, express accurately, first explain several correlation words at this:
Impeller side or sidewall, casing side or sidewall that impeller medial axis is pointed to are called axial sides or axial side wall;
Impeller or body are axial rear side towards motor (or other a power units) side, and corresponding opposite side is axial front side with it, and the rest may be inferred for axial rearward direction and axially front denotion;
Be that impeller is radially anterior near impeller axle center place, its anterior end is impeller radial front end, is radially rear portion of impeller near impeller cylindrical place, and its outer circular edge is impeller radial extremity (the rest may be inferred for the denotion of casing region of interest);
Vane rotary direction is circumferentially, forward vane rotary direction for rotation front or week forwards, carry vane rotary direction and be rear swivel or week rearward, the rest may be inferred in the denotion of other region of interest of body;
Censure in casing intake grill orientation: the import of casing intake grill is front, and after casing intake grill exports and is, in casing intake grill, the rest may be inferred in other orientation denotions;
Impeller channel import of the present invention refers to the middle intake grill of impeller, or the sideways negative pressure of impeller shaft gap, or the sideways synchronous concurrent intake grill of impeller shaft.
Casing of the present invention is various centrifugal fan casings, and impeller comprises various centrifugal fan impellers.
The structure working principle of high temperature resistant dual-effect energy-saving blower fan is such: blade is Double-layer clamp wall type, double-deck double wall forms side runner in blade, in blade, side runner is provided with its import and export, in blade, side runner import is communicated with impeller rear side intake grill, inside blade, runner exit is communicated with leaf dish exhaust outlet, is communicated with the axial posterior medial runner of casing.In blade, side runner is not directly communicated with impeller channel.Impeller channel import is with the connection of impeller front side intake grill, and impeller channel outlet is communicated with the axial anterior interior side runner of casing.When work, exported by the flow through impeller channel import, impeller channel, impeller channel of the high-temperature gas of impeller front side intake grill inspiration, arrange side runner in casing is axially anterior, then side runner exhaust outlet discharge body in axially anterior by casing.When work, by the cryogenic gas of impeller rear side intake grill inspiration flow through runner exit inside side runner in side runner import in impeller, blade, blade, leaf dish exhaust outlet, arrange in the axial posterior medial runner of casing, then discharge body by the axial posterior medial runner of casing exhaust outlet.In working procedure, the high-temperature gas of the cryogenic gas of side runner and the impeller channel of flowing through in the blade of flowing through, isolated operation along separate routes, each other can not the mutual blending of phase mutual interference.In running, impeller channel high-temperature gas conducts the heat to side runner in blade double wall, blade, can be given output body by the absorption of the cryogenic gas (cold wind) of side runner in the blade of flowing through at any time, can ensure that blade double wall obtains fully cooling, ensure that whole blade has enough intensity and normally works.
In working procedure, the high-temperature gas of the impeller channel of flowing through can not mix cold wind, and not cooling, does not change its purity, axially anterior through casing in side runner exhaust outlet discharge body, can directly draw do special.In working procedure, in the blade of flowing through, the cryogenic gas of side runner has absorbed heat becomes cooling down high-temperature gas, and cooling down high-temperature gas is discharged body through the axial posterior medial runner of casing exhaust outlet, can directly draw and be used as him, waste heat recycling, turns waste into wealth, and saves the energy.The flow through cooling cryogenic gas of side runner in blade, can need to regulate arbitrarily according to cooling its flow and pressure.
The present invention adopt rear flow fan impeller and synchronous rear flow fan impeller effect best, the old-fashioned centrifugal blower fan blade wheel effect of leaf dish is the poorest before and after single wall blade band, does not generally adopt.Adopt the only rear flow fan with posterior lobe dish, synchronous rear flow fan impeller, processing and fabricating is very convenient.Rear flow fan impeller relies on negative pressure gap, synchronous rear flow fan relies on synchronous concurrent intake grill radially from the front high-temperature gas that then aspirates, the two is all to rely on side runner low-temperature cold wind in blade radially then to carry out cooling to blade from front, the high-temperature hot-air of suction and the low-temperature cold wind of cooling wheel radially then synchronously carry out from front along impeller, can ensure that high-temperature gas purity is constant, air quantity is large, blast is high, can make again blade obtain fully cooling, adopt rear flow fan impeller and synchronous rear flow fan impeller to be convenient to very much again, for impeller, high-temperature hot-air runner and low-temperature cold wind runner are set, be convenient to arrange axially anterior inner side hot blast runner and the axial posterior medial cold wind of casing runner of casing.
In order to obtain better cooling effect, ensure that impeller bulk strength is constant, the present invention can also be leaf dish (rear flow fan and synchronous rear flow fan posterior lobe dish, leaf dish before and after general centrifugal blower) make Double-layer clamp wall type, double-deck double wall forms side runner in leaf dish, in leaf dish, side runner import is communicated with impeller rear side intake grill, its outlet is communicated with leaf dish exhaust outlet, in leaf dish side runner from impeller shaft to intake grill inspiration cold wind radially from cooling leaf dish then, after the cooling leaf dish of cold wind, then discharge impeller by leaf dish exhaust outlet.
Cooling more fully in order to ensure that blade can obtain; ensure that blade appearance is not gone bad by heat etching; the present invention can also arrange fine and closely woven air hole on the double-deck double wall of blade; blade double wall air hole inner side is communicated with side runner in blade; outside is communicated with impeller channel; blade double wall air hole oozes in blade outer surface from side runner draw in cold wind in blade, makes blade outside form one deck air film protective layer, and air film protective layer can intercept high-temperature hot-air and directly corrode blade surface.
For ensure leaf dish exhaust outlet discharge cooling down high-temperature gas can not mix impeller channel exhaust outlet discharge special-purpose high temperature hot blast in go, the present invention can also add the outer rim wall that keeps out the wind in leaf dish exhaust outlet outer circular edge, add the inner edge wall that keeps out the wind at leaf dish exhaust outlet inner circle edge, by the keep out the wind obstruct of wall of interior outer rim, can make cooling down high-temperature gas that in blade, in side runner and leaf dish, side runner is discharged can not excessively mix in the special-purpose high temperature gas that impeller channel discharges and go.
For ensure the axial posterior medial runner of casing can discharge merely and all leaf dish exhaust outlet discharge cooling down high-temperature gas, the axial posterior medial runner of casing of the present invention will be located at the space position of impeller shaft to rear side.This structural type, axial casing posterior medial runner radial extremity can be arranged to radial exhaust outlet, the axial posterior medial runner of casing exhaust outlet, also can arrange axial type exhaust outlet in the axial posterior medial runner of casing radial extremity.The axial posterior medial runner of radial casing exhaust outlet is convenient to external pipe, is convenient to cooling blower fan hot blast to draw, and waste heat recycling, dual-use, simplified apparatus, saves the energy.
In order to ensure whole Fans suction high temperature material, can keep for a long time its stable performance, suction is effective, and efficiency is high, and the present invention can also arrange casing double wall runner.Casing is designed to Double-layer clamp wall type, and double-deck double wall forms side runner in enclosure wall, and in enclosure wall, side runner is provided with in enclosure wall runner exit inside side runner import and enclosure wall, is provided with side runner guide plate in enclosure wall in enclosure wall in side runner.Enclosure wall inner side is the interior side runner guide plate water conservancy diversion direction difference of enclosure wall of runner everywhere, by side runner guide plate in enclosure wall, the cold wind water conservancy diversion of being introduced by side runner import in enclosure wall can be transported to and need cooling each position of casing to go, to ensure that casing can obtain cooling fully, the cold wind that internal side of shell runner needs, can not lean on and himself aspirate from the external world, and must to side runner in enclosure wall, be blowed by external world's runner import inside enclosure wall.
A casing can all be established side runner in enclosure wall in its entirety, also can need, on cooling position, side runner in enclosure wall is set at casing, as the radial sidewalls of casing, the rear axial side wall of casing is heated gently, temperature is not high, does not need coolingly, and side runner in enclosure wall usually need not be set.Inside enclosure wall, runner exit can be open, discharges cooling hot blast arbitrarily to casing outer space, and runner exit can be several inside such enclosure wall, even tens.Inside enclosure wall, runner exit also can seal, and only from a certain position to a direction air draft, runner exit can arrange one or several inside such enclosure wall.The cooling hot blast that such exhaust outlet is discharged can draw is used as him, waste heat recycling; Also can be communicated with flowing to the axial posterior medial runner exit of casing, the cooling hot blast of discharging with the axial posterior medial runner of casing is drawn and is used as him together, and waste heat recycling, saves the energy.
Below in conjunction with drawings and Examples, the present invention is done at length and explained.
Brief description of the drawings
Fig. 1-the first mode of execution structural representation of the present invention;
Fig. 2-the first mode of execution Double-layer clamp wall type blade impeller structural representation of the present invention;
The A of Fig. 3-Fig. 2 is to schematic diagram;
The double-deck double wall blade structure of Fig. 4-the first mode of execution of the present invention schematic diagram;
The B of Fig. 5-Fig. 4 is to structural representation;
Fig. 6-the second mode of execution structural representation of the present invention;
Fig. 7-the second mode of execution Double-layer clamp wall type blade of the present invention, double-deck double wall leaf dish structural representation;
The C of Fig. 8-Fig. 7 is to structural representation;
The third mode of execution structural representation of Fig. 9-the present invention;
The third mode of execution Double-layer clamp wall type casing structure schematic diagram of Figure 10-the present invention;
The E of Figure 11-Figure 10 is to structural representation.
The explanation of accompanying drawing drawing:
1 casing, 2 casing axial front side intake grills, the axial rear side intake grill of 3 casing, 4 casings are anterior interior side runner axially, the axial posterior medial runner of 5 casing, 6 casings are anterior interior side runner exhaust outlet axially, the axial posterior medial runner of 7 casing exhaust outlet, 8 impellers, 9 leaf dishes, 10 blades, 11 impeller rear side intake grills, 12 impeller channels, 13 impeller channel imports, 14 impeller channel outlets, side runner in 15 blades, side runner import in 16 blades, runner exit inside 17 blades, 18 leaf dish exhaust outlets, side runner in 19 leaf dishes, side runner import in 20 leaf dishes, runner exit inside 21 leaf dishes, 22 blade double wall air holes, the 23 leaf dish exhaust outlet outer rims wall that keeps out the wind, the 24 leaf dish exhaust outlet inner edges wall that keeps out the wind, 25 leaf dish exhaust outlets axially export, 26 leaf dish exhaust outlets radially export, side runner in 27 enclosure walls, side runner import in 28 enclosure walls, runner exit inside 29 enclosure walls, side runner guide plate in 30 enclosure walls, 31 blade thrust walls, 32 blade negative pressure partitioning walls, 33 internal side of shells intercept separator, 34 impeller front seal leaf dishes, 35 motors.
Embodiment
Embodiment 1, with reference to figure 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, high temperature resistant dual-effect energy-saving blower fan, includes casing 1, casing axial front side intake grill 2, the axial rear side intake grill 3 of casing, casing is anterior interior side runner 4 axially, the axial posterior medial runner 5 of casing, casing is anterior interior side runner exhaust outlet 6 axially, the axial posterior medial runner of the casing exhaust outlet 7 of radial, rear flow fan impeller 8, lateral lobe dish 9 after impeller, be provided with the blade 10 of negative pressure partitioning wall 31 and thrust wall 32, impeller rear side intake grill 11, impeller channel 12, impeller channel import (negative pressure gap) 13, impeller channel outlet 14, the negative pressure partitioning wall 32 of blade 10 and thrust wall 31 are all Double-layer clamp wall types, negative pressure partitioning wall double wall space and thrust wall double wall space interconnect, negative pressure partitioning wall double wall space and thrust wall double wall space form side runner 15 in blade jointly, in blade, side runner 15 radial front end are provided with side runner import 16 in blade, in blade, side runner import 16 is communicated with impeller rear side intake grill 11, side runner 15 is radially provided with runner exit 17 inside blade in rear portion in blade, impeller posterior lobe dish 9 radially rear portion is provided with leaf dish exhaust outlet 18, and be provided with Way out towards the axially outlet 25 of the leaf dish exhaust outlet of axial rearward direction, leaf dish exhaust outlet 18 inside and outside circle edges are respectively equipped with inner edge wall 23 and the outer rim wall 24 that keeps out the wind that keeps out the wind, leaf dish exhaust outlet 18 is communicated with runner exit 17 inside blade, be not communicated with impeller channel 12, side runner 15 is not directly communicated with impeller channel 12 by the obstruct of blade double wall in blade, the axial posterior medial runner 5 of casing is located at the axial rear side of impeller 8, between the axial anterior interior side runner 4 of casing and the axial posterior medial runner 5 of casing, be provided with internal side of shell and intercept separator 33, motor 35.
Its suction superhigh temperature for this example (more than 600 DEG C) combustion gas and conveying High Temperature High Pressure hot blast.
When work, the 13(impeller channel outlet of rear flow fan impeller negative pressure gap) enter impeller channel 12 to being processed into high velocity air by the 2 inspiration part superhigh temperature combustion gas of casing axial front side intake grill, this high velocity air forms strong suction function and continues the superhigh temperature combustion gas that sucking machine shell axial front side intake grill 2 rows come in again.High negative pressure effect make to be again sucked into high-temperature fuel gas form strong whirlwind, and then be rotated discharge impeller, then in axially anterior by casing, side runner exhaust outlet 6 is discharged body.In whole working procedure, by the superhigh temperature combustion gas of casing front side intake grill inspiration body, major part is not entered impeller channel, major part is to be all rotated discharge body in impeller front side, impeller channel is not entered in most of superhigh temperature combustion gas, can ensure that blade absorbs heat few, temperature rise can be too not high.
In working procedure, in blade, side runner import 16 is aspirated cold wind by the effect of centrifugal force from impeller rear side intake grill 11, the axial rear side intake grill 3 of casing and is entered side runner 15 in blade, cold wind is side runner 15 in the front blade of then flowing through radially, arranged in leaf dish exhaust outlet 18 by runner exit 17 inside blade again, axially export 25 by leaf dish exhaust outlet again and arrange in the axial posterior medial runner 5 of casing, finally discharge body by the axial posterior medial runner of casing exhaust outlet 7 again.The heat to side runner in blade double wall and blade is conducted in the cold wind superhigh temperature combustion gas that constantly absorbs the impeller channel 12 of flowing through in blade in side runner process of flowing through, impel the blade double wall increasing extent of temperature that is heated very little, whole blade keeps intensity constant because heat up low, thereby just can guarantee that whole impeller operation is steady, stable performance.Cold wind is flowed through after the interior side runner of blade, owing to constantly absorbing heat, temperature raises becomes cooling down high-temperature hot blast, this cooling down high-temperature hot blast air quantity is large, and blast is high, and heat content is large, discharging body through casing axial posterior medial runner exhaust outlet 7 draws and is used as him, residual heat and energy recycling, had both simplified equipment, had greatly saved again the energy.
This example is owing to there being the obstruct of the double-deck double wall of blade, there is internal side of shell to intercept the obstruct of separator 33, there is keep out the wind wall and outer rim of leaf dish exhaust outlet inner edge to keep out the wind stopping up of wall, in whole working procedure, the high-temperature fuel gas that enters impeller channel is all to shunt synchronous operation at isolated each other space runner with the cooling-air that enters side runner in blade from start to finish, do not interfere with each other each other not blending mutually, both ensured purity and the temperature of high-temperature fuel gas, and ensured again that cooling down high-temperature hot blast is not contaminated and can directly have been drawn and be used as him.
This routine dual-use, the superhigh temperature of suction simultaneously gas, simultaneously for equipment or environment are carried the cooling hot blast of pure High Temperature High Pressure.
Embodiment 2, with reference to figure 6, Fig. 7, Fig. 8, this example is substantially the same with example 1, difference is that this routine posterior lobe dish 9 is Double-layer clamp wall type, double-deck double wall forms side runner 19 in leaf dish, and in leaf dish, side runner 19 is radially provided with side runner import 20 in leaf dish in front portion, and in leaf dish, side runner import 20 is communicated with impeller rear side intake grill 11, side runner 19 is radially provided with runner exit 21 inside leaf dish in rear portion in leaf dish, and runner exit 21 is communicated with leaf dish exhaust outlet 18 inside leaf dish.With second difference of example 1, be that the double-deck double wall of this routine blade is provided with some fine and closely woven blade double wall air holes 22, blade double wall air hole 22 inner sides are communicated with side runner 15 in blade, and outside is communicated with impeller channel 12.The 3rd difference is that this routine leaf dish exhaust outlet outside is provided with leaf dish exhaust outlet and radially exports 26.
When work; because posterior lobe dish is provided with side runner 19 in leaf dish; it is cooling fully that the cooling-air of side runner 19 of flowing through in leaf dish can make Ye Panbi obtain; again owing to establishing fine and closely woven blade double wall air hole 22 on the double-deck double wall of blade; blade double wall air hole 22 aspirates cooling-air and permeates in blade double wall appearance in blade side runner; form one deck blade double wall air film protective layer, can stop the upright erosion impeller that connects of the impeller channel high temperature substrate of flowing through by this road air film protective layer.
This routine ratio 1 is more high temperature resistant, high-temperature corrosion resistance, and the high etchant gas solid matter of the multiple high temperature of suitable suction, cooling down high-temperature hot blast is same pure pollution-free, can draw and be used as him equally.
Embodiment 3, with reference to figure 9, Figure 10, Figure 11, this example is substantially the same with example 2, difference is that this routine casing radial sidewalls is Double-layer clamp wall construction formula, bilateral double wall forms side runner 27 in enclosure wall, side runner 27 is provided with in enclosure wall runner exit 29 inside side runner import 28 and enclosure wall in enclosure wall, 27 li of side runners are provided with side runner guide plate 30 in enclosure wall in enclosure wall, inside enclosure wall, runner exit 29 is with 7 following currents of the axial posterior medial runner of casing exhaust outlet to connection, and in enclosure wall, wind pipeline and blower connection are followd in side runner import 28.
When work, by blower and supply air duct from runner import 28 inside enclosure wall to enclosure wall in side runner 27 advertise cold wind, after the cooling casing radial sidewalls of cold wind, eject from runner exit 29 inside enclosure wall, enter the axial posterior medial runner of casing exhaust outlet 7 along the axial posterior medial runner 5 of casing again, the cooling down high-temperature hot blast of following the axial posterior medial runner discharge of casing is drawn and is used as him together.
This routine casing radial sidewalls obtains cooling fully, thereby makes casing radial sidewalls have the performance of the high corrosion of high temperature resistance.The high corrosive deposit of this routine ratio 2 suction high temperature preferably uses.This routine cooling down high-temperature hot blast air quantity is large, and preferably being extracted flows to relevant environment or relevant devices, and residual heat and energy re-uses, more dual-effect energy-saving.

Claims (8)

1. high temperature resistant dual-effect energy-saving blower fan, comprises casing (1), casing axial front side intake grill (2), the axial rear side intake grill of casing (3), casing is anterior interior side runner (4) axially, the axial posterior medial runner of casing (5), casing is anterior interior side runner exhaust outlet (6) axially, the axial posterior medial runner of casing exhaust outlet (7), impeller (8), leaf dish (9), blade (10), impeller rear side intake grill (11), impeller channel (12), impeller channel import (13), impeller channel outlet (14), it is characterized in that, blade is Double-layer clamp wall type, double-deck double wall forms side runner (15) in blade, in blade, side runner radial front end is provided with side runner import (16) in blade, in blade, side runner import (16) is communicated with impeller rear side intake grill (11), side runner is radially provided with runner exit (17) inside blade in rear portion in blade, leaf dish (9) radially rear portion is provided with the leaf dish exhaust outlet (18) of Way out towards axial rearward direction, leaf dish exhaust outlet (18) is communicated with runner exit (17) inside blade, be not communicated with impeller channel (12), impeller rear side intake grill (11) is not communicated with impeller channel (12), and in blade, side runner (15) is not directly communicated with impeller channel (12).
2. high temperature resistant dual-effect energy-saving blower fan according to claim 1, it is characterized in that, leaf dish (9) is Double-layer clamp wall construction formula, double-deck double wall forms side runner (19) in leaf dish, in leaf dish, side runner is radially provided with side runner import (20) in leaf dish in front portion, side runner import (20) is communicated with impeller rear side intake grill (11) in leaf dish, and in leaf dish, side runner is radially provided with runner exit (21) inside leaf dish in rear portion, and runner exit (21) is communicated with leaf dish exhaust outlet (18) inside leaf dish.
3. high temperature resistant dual-effect energy-saving blower fan according to claim 1, it is characterized in that, on the double wall of blade (10), establish blade double wall air hole (22), blade double wall air hole (22) inner side is communicated with side runner (15) in blade, and outside is communicated with impeller channel (12).
4. high temperature resistant dual-effect energy-saving blower fan according to claim 1, it is characterized in that, leaf dish exhaust outlet (18) outer circular edge is provided with the leaf dish exhaust outlet outer rim wall (23) that keeps out the wind, and leaf dish exhaust outlet (18) inner circle edge is provided with the leaf dish exhaust outlet inner edge wall (24) that keeps out the wind.
5. high temperature resistant dual-effect energy-saving blower fan according to claim 1, it is characterized in that, the axial posterior medial runner of casing (5) is located at the space position of internal side of shell impeller shaft to rear side, and the axial posterior medial runner of the casing exhaust outlet (7) of the axial posterior medial runner of casing (5) radial extremity is radial.
6. high temperature resistant dual-effect energy-saving blower fan according to claim 1, it is characterized in that, the axial posterior medial runner of casing (5) is located at the space position of internal side of shell impeller shaft to rear side, and the axial posterior medial runner of the casing exhaust outlet (7) of the axial posterior medial runner of casing (5) radial extremity is axial type.
7. high temperature resistant dual-effect energy-saving blower fan according to claim 1, it is characterized in that, casing (1) is Double-layer clamp wall type, double-deck double wall forms side runner (27) in enclosure wall, side runner (27) is provided with in enclosure wall runner exit (29) inside side runner import (28) and enclosure wall, the inner interior side runner guide plate (30) of enclosure wall that is provided with of side runner (27) in enclosure wall in enclosure wall.
8. high temperature resistant dual-effect energy-saving blower fan according to claim 7, is characterized in that, inside enclosure wall runner exit (29) with the axial posterior medial runner of casing exhaust outlet (7) following current to connection.
CN201210058185.2A 2012-03-07 2012-03-07 Energy-saving draught fan with high temperature resistance and double effect Expired - Fee Related CN102588335B (en)

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