CN107165840A - Centrifugal blower - Google Patents

Centrifugal blower Download PDF

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Publication number
CN107165840A
CN107165840A CN201611143595.1A CN201611143595A CN107165840A CN 107165840 A CN107165840 A CN 107165840A CN 201611143595 A CN201611143595 A CN 201611143595A CN 107165840 A CN107165840 A CN 107165840A
Authority
CN
China
Prior art keywords
motor
bearing
motor shaft
end cap
centrifugal blower
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201611143595.1A
Other languages
Chinese (zh)
Inventor
李庆山
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CN201611143595.1A priority Critical patent/CN107165840A/en
Publication of CN107165840A publication Critical patent/CN107165840A/en
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D25/0606—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/58—Cooling; Heating; Diminishing heat transfer
    • F04D29/5806—Cooling the drive system
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/10—Casings or enclosures characterised by the shape, form or construction thereof with arrangements for protection from ingress, e.g. water or fingers
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/18—Casings or enclosures characterised by the shape, form or construction thereof with ribs or fins for improving heat transfer
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
    • H02K9/04—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
    • H02K9/06—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium with fans or impellers driven by the machine shaft
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
    • H02K9/193—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil with provision for replenishing the cooling medium; with means for preventing leakage of the cooling medium

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

The present invention relates to a kind of centrifugal blower without transmission group, the blower fan omits transmission group part, and motor part is directly installed as one with impeller, motor underframe.The present invention is by motor, the motor-driven motor shaft, the bearing being engaged with the motor shaft, installed in the impeller of motor shaft one end, spiral case and motor underframe composition, bearing outside is on the outer face of electric motor end cap, bearing is fitted into bearing outside, and bearing gland is bolted on electric motor end cap；Sealing ring is housed at bearing gland axis hole position and motor shaft cooperation, and is bolted with sealing gland closing；Sealing ring is housed at end cap outer face dress bearing outside with motor shaft cooperation, sealing ring is housed at the axis hole position for the end cap being connected with electric machine casing and motor shaft cooperation.The present invention significantly saves equipment occupation space on the basis of lifting means reliability, makes both having can be used as normal temperature blower fan without transmission group centrifugal blower and also being used as high-temperature blower for same structure, reduces equipment production cost.

Description

Centrifugal blower
Technical field
The present invention relates to a kind of centrifugal blower, and in particular to a kind of centrifugal blower without transmission group.
Background technology
The centrifugal blower that currently there are, is by impeller, three major part compositions of transmission group and motor mostly.Wherein The effect of transmission group is the stress for sharing motor shaft and bearing, it is ensured that the reliability of whole blower fan structure, but transmission group this body Larger, the heavier-weight of product, and equipment production cost can be taken, therefore market occurs in that one kind by shortening propeller shaft length, and The Lightweight centrifugal fan that transmission group and electric motor stand are directly connected to, this centrifugal blower can reduce biography to a certain extent The space that dynamic group takes, and equipment production cost is reduced, but its essence is that transmission group unites two into one with electric motor stand, this group Although conjunction mode saves the space of transmission group occupancy, it is likely that cause the increase of electric motor stand space-consuming, and this design Omit transmission group part completely, institute can reduction space-consuming and production cost be than relatively limited.In the market There is a kind of Small Centrifugal Fan, this centrifugal blower eliminates transmission group part, directly motor is connected with impeller, but this The centrifugal blower of type is the normal temperature blower fan of low-power, and its bearing can not carry the work of high-power blower with motor shaft, pass through Cross practical application to learn, if the transmission group part of common centrifugal blower is removed, and without change directly by impeller and motor Connect, then motor shaft can be difficult to normal work with bearing because stress is excessive, equipment is produced quality problems.
The content of the invention
It is an object of the invention to provide a kind of centrifugal blower, the blower fan eliminates transmission group part completely, by changing electricity Machine end cover structure, can coordinate the motor shaft and the more bearing of big load amount of more large-diameter, and then realize with having biography The blower fan identical effect of dynamic group, on the basis of ensureing that equipment dependability and performance are constant, overcomes technical difficulty, significantly saves The space of hold facility has been saved, equipment production cost is reduced.
The technical scheme is that：A kind of centrifugal blower, by motor, the motor-driven motor shaft, with the electricity The bearing that arbor is engaged, installed in the impeller of motor shaft one end, spiral case and motor underframe composition, it is characterised in that eliminate Bearing is fitted into bearing outside by the transmission group part of blower fan, bearing outside on the outer face of electric motor end cap, after bearing loads Bearing gland is fixed on electric motor end cap by bolt, the electric motor end cap top is provided with oil filler point, end cover surface has connection Electric motor end cap, is fixed on electric machine casing, the motor is directly assembled into one with impeller, underframe by hole by connecting hole；For Prevent that dust enters bearing in work, at the axis hole position for the end cap being connected with electric machine casing and motor shaft cooperation, and axle Pressure cap axis hole position coordinates with motor shaft cooperation, being respectively provided with sealing ring, and in bearing gland axis hole position and motor shaft The sealing ring at place is externally provided with sealing gland, is connected by bolt with electric motor end cap；To prevent that dust enters motor in work End cap, sealing ring is equipped with electric motor end cap outer face dress bearing outside with motor shaft cooperation.Remove after transmission group, the electricity of blower fan Arbor and bearing directly will bear to come from the gravity of impeller, therefore the load capacity of bearing that is used of blower fan and motor shaft The diameter of axle should all make corresponding adjustment, to ensure that related accessory will not be because stress is excessive and deforms and is broken：The bearing of the blower fan According to different motor models use corresponding big load bearing, such as Y160M1, Y160M2, Y160L, Y180M type motor, then Using 6412 bearings, as motor model Y200L, Y225S, Y225M, then 6414 bearings should be used；The axle of the motor shaft Footpath is adjusted according to different motor models, for example, using a diameter of in Y160M1, Y160M2, Y160L, Y180M type motor 56mm motor shaft, a diameter of 66mm motor shaft is then used as motor model Y200L, Y225S, Y225M, larger Blower fan such as Y250M, Y280S, Y280M type, then need the corresponding motor shaft using 76mm；And because bearing outside is in motor side On the outer face of lid, electric motor end cap can be caused to have increased compared to common electric machine end cap, therefore need to be corresponding by motor shaft length Increase to meet assembling demand.It should be noted that bearing outside can not be also arranged on to the outer end of electric motor end cap in practice On face, and the load capacity of the diameter of axle and bearing simply by increase motor shaft, impeller and motor are directly connected to, but this wind Machine structure can be only applied in normal temperature blower fan, when as high-temperature blower, because temperature is higher at high-temperature blower impeller, from motor It is closer to the distance, it is unfavorable for bearing radiating if bearing is still placed in inside electric motor end cap, causes bearing running hot to trigger product matter Amount problem；Secondly, bearing outside being arranged on the outer face of electric motor end cap can increase between the bearing of motor rear and front end Distance, and then the pressure of bearing is shared, increase the reliability of equipment.Therefore this technology feature is on the basis of lifting means reliability On, the centrifugal blower without transmission group of same structure had both been may be used as normal temperature blower fan and be also used as high warm air Machine, with prominent substantive distinguishing features and significant progress.
Gusset is provided between the bearing outside and electric motor end cap, three is cast to become one structure, and the gusset is uniform It is distributed in the outer surface of bearing outside, this structure can be on the basis of bonding strength be ensured, by gusset by bearing outside A fixed gap is isolated between electric motor end cap, this space can prevent the temperature of bearing outside when high-temperature blower works from directly passing Being directed on electric machine casing causes equipment surface to overheat, and the area of gusset is smaller in addition, and the capacity of heat transmission is limited, therefore such a design can Further to mitigate the motor feels hot situation.
In view of the stability of connection, otherwise gusset quantity very few should not be connected there may be bearing outside with electric motor end cap Unstable situation, therefore gusset quantity is preferably 4 to 8.
When as high-temperature blower, because gas flow temperature is too high, the situation that motor may be caused not radiate, motor is in nothing Service life of equipment can be reduced by being worked long hours under conditions of method radiating or poor heat radiation, therefore can be in the electric motor end cap in axle The surface of overcoat position is held provided with two water cooling through holes, two through holes are communicated in cover internal, when as high-temperature blower, Two through holes can be connected with water inlet pipe and drainpipe respectively, current being capable of the warm with bearing running by the pipeline of cover internal Amount, plays a part of effective temperature-reducing.
Also can be outside Blower Housing with equipped with fan blade is dissipated, coordinating water cooling through hole can be at the motor shaft at motor connection position Strengthen radiating effect to a certain extent, scattered fan blade also can be individually used on the normal temperature blower fan without water cooling through hole, for motor Radiating.
The present invention can be greatly decreased equipment occupation space, reduce production cost, practical, wide market, with G4-73NO8D blower fans are matched somebody with somebody exemplified by Y160L, and length is 2396mm after the completion of blower fan assembling, after the completion of being assembled using motor of the present invention Blower fan total length is 1559mm, shortens 837mm, and blower fan weight is reduced to 660kg by 880kg, reduces weight 220kg, product drop 2000 yuan or so of low cost.
Subordinate list 1 is bearing and motor shaft Adjusted Option.
Subordinate list 1
Brief description of the drawings
Accompanying drawing 1 is blower fan assembly structure diagram.
Accompanying drawing 2 is the front view of electric motor end cap.
Accompanying drawing 3 is the right view of electric motor end cap.
Accompanying drawing 4 is motor assembling schematic diagram.
Embodiment
Embodiment 1, a kind of motor model Y90L centrifugal blower, by motor, the motor-driven motor shaft, with institute The bearing that motor shaft is engaged is stated, installed in the impeller of motor shaft one end, spiral case and motor underframe composition, this centrifugal blower is omitted Bearing (2) is loaded bearing outside (1) by the transmission group part of blower fan, bearing outside (1) on the outer face of electric motor end cap In, and bearing gland (4) is bolted on electric machine casing, the end cover surface has connecting hole, will by connecting hole Electric motor end cap is fixed on electric machine casing, and the motor is directly assembled into one with impeller, underframe；The bearing uses 6404 axles Hold, the motor shaft diameter of axle is 26mm；Sealing ring (5) is housed at bearing gland axis hole position and motor shaft cooperation, and with close Sealed cover (8) is bolted closing.Sealing ring (6) is housed at end cap outer face dress bearing outside with motor shaft cooperation, Sealing ring (7) is housed at the axis hole position for the end cap being connected with electric machine casing and motor shaft cooperation.
Embodiment 2, a kind of motor model Y100L1 centrifugal blower, by motor, the motor-driven motor shaft, with The bearing that the motor shaft is engaged, installed in the impeller of motor shaft one end, spiral case and motor underframe composition, this centrifugal blower is saved The transmission group part of blower fan is omited, bearing (2) is loaded bearing outside (1) by bearing outside (1) on the outer face of electric motor end cap In, and bearing gland (4) is bolted on electric machine casing；The end cover surface has connecting hole, will by connecting hole Electric motor end cap is fixed on electric machine casing, and the motor is directly assembled into one with impeller, underframe；The bearing uses 6408 axles Hold, the motor shaft diameter of axle is 36mm.Sealing ring (5) is housed at bearing gland axis hole position and motor shaft cooperation, and with close Sealed cover (8) is bolted closing；Sealing ring (6) is housed at end cap outer face dress bearing outside with motor shaft cooperation, Sealing ring (7) is housed at the axis hole position for the end cap being connected with electric machine casing and motor shaft cooperation；The bearing outside (1) with 4 gussets (3) are evenly distributed between electric motor end cap, three is cast to become one structure；With the company of motor outside impeller spiral case Equipped with scattered fan blade (10) at the motor shaft of socket part position.
Embodiment 3, a kind of motor model Y225M centrifugal blower, by motor, the motor-driven motor shaft, with The bearing that the motor shaft is engaged, installed in the impeller of motor shaft one end, spiral case and motor underframe composition, this centrifugal blower is saved The transmission group part of blower fan is omited, bearing (2) is loaded bearing outside (1) by bearing outside (1) on the outer face of electric motor end cap In, and bearing gland (4) is bolted on electric machine casing, the end cover surface has connecting hole, will by connecting hole Electric motor end cap is fixed on electric machine casing, and the motor is directly assembled into one with impeller, underframe；The bearing uses 6414 axles Hold, the motor shaft diameter of axle is 66mm；Sealing ring (5) is housed at bearing gland axis hole position and motor shaft cooperation, and with close Sealed cover (8) is bolted closing；Sealing ring (6) is housed at end cap outer face dress bearing outside with motor shaft cooperation, Sealing ring (7) is housed at the axis hole position for the end cap being connected with electric machine casing and motor shaft cooperation；The bearing outside (1) with 8 gussets (3) are evenly distributed between electric motor end cap, three is cast to become one structure；The electric motor end cap is in bearing outside The surface of position is communicated provided with two water cooling through holes (9), through hole (9) in cover internal；With motor outside impeller spiral case Equipped with scattered fan blade (10) at connecting portion motor shaft.

Claims (5)

1. a kind of centrifugal blower, by motor, the motor-driven motor shaft, the bearing being engaged with the motor shaft is installed Constituted in the impeller of motor shaft one end, spiral case and motor underframe, it is characterised in that：The transmission group part of blower fan is eliminated, it is described Motor is directly installed as one with impeller, motor underframe；Bearing is loaded bearing by bearing outside on the outer face of electric motor end cap In overcoat, and bearing gland is bolted on electric motor end cap；At bearing gland axis hole position and motor shaft cooperation Equipped with sealing ring, and it is bolted with sealing gland closing；At end cap outer face dress bearing outside with motor shaft cooperation Equipped with sealing ring, sealing ring is housed at the axis hole position for the end cap being connected with electric machine casing and motor shaft cooperation.
2. centrifugal blower as claimed in claim 1, it is characterised in that：There are gusset, three between the bearing outside and electric motor end cap The cast structure that forms as one of person.
3. centrifugal blower as claimed in claim 2, it is characterised in that：The gusset quantity is 4 to 8.
4. centrifugal blower as claimed in claim 1, it is characterised in that：Table of the electric motor end cap in bearing outside position Face is communicated provided with two water cooling through holes, two through holes in cover internal.
5. the centrifugal blower as described in any one in Claims 1-4, it is characterised in that：With motor outside impeller spiral case Equipped with scattered fan blade at connecting portion motor shaft.
CN201611143595.1A 2016-12-13 2016-12-13 Centrifugal blower Pending CN107165840A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201611143595.1A CN107165840A (en) 2016-12-13 2016-12-13 Centrifugal blower

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201611143595.1A CN107165840A (en) 2016-12-13 2016-12-13 Centrifugal blower

Publications (1)

Publication Number Publication Date
CN107165840A true CN107165840A (en) 2017-09-15

Family

ID=59849496

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201611143595.1A Pending CN107165840A (en) 2016-12-13 2016-12-13 Centrifugal blower

Country Status (1)

Country Link
CN (1) CN107165840A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107170312A (en) * 2017-07-26 2017-09-15 王�华 A kind of method and system of enquirement and answer in online teaching

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107170312A (en) * 2017-07-26 2017-09-15 王�华 A kind of method and system of enquirement and answer in online teaching

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PB01 Publication
PB01 Publication
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20170915

WD01 Invention patent application deemed withdrawn after publication