CN209586801U - A kind of pressure fan - Google Patents

A kind of pressure fan Download PDF

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Publication number
CN209586801U
CN209586801U CN201822096086.9U CN201822096086U CN209586801U CN 209586801 U CN209586801 U CN 209586801U CN 201822096086 U CN201822096086 U CN 201822096086U CN 209586801 U CN209586801 U CN 209586801U
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China
Prior art keywords
fan
air
outlet
pressure fan
filter
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CN201822096086.9U
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Chinese (zh)
Inventor
杨旭阳
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Hebei Zhonglang Communication Technology Co Ltd
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Hebei Zhonglang Communication Technology Co Ltd
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Priority to CN201822096086.9U priority Critical patent/CN209586801U/en
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Abstract

The utility model discloses a kind of pressure fan, belong to ventilation blower technical field, comprising: fan shroud has air-supply outlet;Centrifugal blower is mounted in the fan shroud, has fan inlet and fan outlet;Between the fan outlet and the air-supply outlet, it is provided with filtration channel, on the side wall of the filtration channel, it is provided with the annular filter structure for accommodating dustiness, the air-flow being discharged from the fan outlet, in a manner of along the rotation of the inner wall of the filtration channel, flowed towards the air-supply outlet;The pressure fan of the utility model, between the fan outlet of centrifugal blower and the air-supply outlet of fan shroud, it is connected to by filtration channel, on the side wall of filtration channel, it is provided with annular filter structure, since annular filter structure does not stop air-flow, when the amount that annular filter structure absorbs dustiness reaches the upper limit, will not plug filter channel, therefore will not influence the ventilation quantity of pressure fan.

Description

A kind of pressure fan
Technical field
The utility model belongs to ventilation blower technical field, and in particular to a kind of pressure fan.
Background technique
In factory or family, indoor ventilation is to be sent into enough fresh skies to the interior space using ventilation blower Gas, while the foul atmosphere that interior does not meet hygienic requirements is discharged, so that room air is met hygienic requirements and production process need It wants, wherein be known as pressure fan to the ventilation blower of indoor air-supply.
Existing pressure fan, is only provided with filtering screen at fan inlet, for stopping to compared with bigger material, in order to Guarantee that pressure fan from the indoor air of outdoor feeding, can satisfy certain cleanliness, it generally need to be in the air outlet of pressure fan Filter plant is arranged in rear, for being filtered to the air that pressure fan is discharged, makes to be finally fed to indoor air to reach and want Seek standard.
However, being filtered using filter plant, the sundries being filtered out is easy plug filter mouth, causes to divulge information ineffective, Therefore it needs periodically to safeguard filter plant, in the case where some outdoor weathers are severe, frequency of maintenance increases, and is easy to lead Cause increasing for maintenance cost.
Utility model content
Therefore, the technical problem to be solved by the present invention is to overcome pressure fan in the prior art to set at air outlet The filter plant set is easy to block exit passageway, causes pressure fan to divulge information ineffective defect, to provide a kind of pressure fan.
Pressure fan provided by the utility model, comprising:
Fan shroud has air-supply outlet;
Centrifugal blower is mounted in the fan shroud, has fan inlet and fan outlet;
Between the fan outlet and the air-supply outlet, it is provided with filtration channel, in the side wall of the filtration channel On, it is provided with the annular filter structure for accommodating dustiness, the air-flow being discharged from the fan outlet, along the filtration channel Inner wall rotation mode, towards the air-supply outlet flow.
Preferably, the annular filter structure includes passing through the inner wall of circular filter net and the fan shroud, shape At for accommodating the annular housing of dustiness.
Preferably, the annular filter structure further includes that setting is intracorporal in the annular chamber, for adsorbing dirt Dirty adsorbent material.
Preferably, the adsorbent material is filter cotton.
Preferably, the side of the centrifugal impeller surfaces of revolution is arranged in the fan outlet of the centrifugal blower.
Preferably, the centrifugal blower is equipped with drawing for annular between Blower Housing and the outer ring of centrifugal impeller Wind guide channel, the outlet in the guidance air duct, towards the stretching in the opposite direction with the fan inlet, the guidance air duct Export mixes described in fan outlet.
Preferably, the import in the guidance air duct, is set on the air inlet outer wall of the centrifugal impeller.
Preferably, between the outer wall in the guidance air duct and the inner wall of the fan shroud, it is provided with sealing plate.
Preferably, the sealing plate is supported on the raised line being arranged on the inner wall of the fan shroud.
Preferably, filter screen is equipped on the air-supply outlet and the fan inlet.
Technical solution provided by the utility model, has the advantages that
1, pressure fan provided by the utility model, between the fan outlet of centrifugal blower and the air-supply outlet of fan shroud, It is connected to by filtration channel, on the side wall of filtration channel, is provided with annular filter structure, since annular filter structure is not right Air-flow is stopped, when the amount that annular filter structure absorbs dustiness reaches the upper limit, will not plug filter channel, therefore will not Influence the ventilation quantity of pressure fan.
The air-flow being discharged from fan outlet flows, In in a manner of along the rotation of the inner wall of filtration channel towards air-supply outlet During air-flow flows, the annular filter structure on filtration channel side wall is set, the dustiness in air-flow can be inhaled It receives, to be filtered to air-flow, the filter device for the filtering of subsequent further progress reduces the heavy burdens.
2, pressure fan provided by the utility model, the fan outlet of the centrifugal blower of use, setting are rotated in centrifugal impeller The side in face is centrifuged the air-flow thrown away from centrifuge blade outer ring, during flowing towards fan outlet, additionally it is possible to used Property power under the action of keep rotation, thus, make the air-flow being discharged from fan outlet, can be to rotate along the inner wall of filtration channel Mode is flowed towards air-supply outlet.
3, pressure fan provided by the utility model guides the import in air duct, is set in centrifugal impeller on centrifugal blower On air inlet outer wall, the import in guidance air duct is blocked by the outer wall of air inlet, prevents from getting rid of from the outer ring of centrifugal impeller Air-flow out, the entrance leakage in guidance air duct.
4, pressure fan provided by the utility model is provided with close between the outer wall in guidance air duct and the inner wall of fan shroud Sealing plate, for stopping the air-flow from the outlet discharge in guidance air duct to flow towards fan inlet direction.
5, pressure fan provided by the utility model can be used in fresh air system, be arranged on the inlet conduits of new blower, Pre-filtering can be carried out to the air for entering new blower, avoid all relying on filter plant to the filtering of outside air, reduce The burden for filtering equipment, reduces the cleaning frequency of filter plant.
Detailed description of the invention
It, below will be right in order to illustrate more clearly of specific embodiment of the present invention or technical solution in the prior art Specific embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, it is described below In attached drawing be that some embodiments of the utility model are not paying creativeness for those of ordinary skill in the art Under the premise of labour, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the stereochemical structure perspective view of the explosion of the utility model.
Fig. 2 is the schematic perspective view of the utility model.
Fig. 3 is the main view schematic perspective view of centrifugal impeller.
Fig. 4 is the rear view three-dimensional structure of centrifugal impeller.
Fig. 5 is the rear view three-dimensional structure of centrifugal impeller.
Description of symbols:
1, fan shroud;101, air-supply outlet;2, centrifugal blower;201, fan inlet;202, fan outlet;203, it is centrifuged leaf Wheel;204, Blower Housing;3, filtration channel;4, annular housing;5, circular filter net;6, sealing plate;7, raised line.
Specific embodiment
The technical solution of the utility model is clearly and completely described below in conjunction with attached drawing, it is clear that described Embodiment is the utility model a part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, originally Field those of ordinary skill every other embodiment obtained without making creative work belongs to practical Novel protected range.
In the description of the present invention, it should be noted that term " on ", "lower", "left", "right", "vertical", " water It is flat ", "inner", the instructions such as "outside" orientation or positional relationship be to be based on the orientation or positional relationship shown in the drawings, merely to just In description the utility model and simplify description, rather than the device or element of indication or suggestion meaning there must be specific side Position is constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally Connection;It can be mechanical connection, be also possible to be electrically connected;Can be directly connected, can also indirectly connected through an intermediary, It can be the connection inside two elements.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition The concrete meaning of language in the present invention.
In addition, as long as technical characteristic involved in the utility model different embodiments disclosed below is each other Not constituting conflict can be combined with each other.
As shown in Fig. 1~5, pressure fan provided in this embodiment, comprising: fan shroud 1 and centrifugal blower 2,
The centrifugal blower 2 includes: centrifugal impeller 203 and Blower Housing 204, the rotary shaft end of the centrifugal impeller 203 End, is connected on the crossbeam of 204 outlet end of Blower Housing, has between the outer ring and Blower Housing 204 of the centrifugal impeller 203 Have annular guidance air duct, it is described guidance air duct outlet towards and the fan inlet 201 stretching in the opposite direction, To form the fan outlet 202 of the centrifugal blower 2, it is, the setting of fan outlet 202 of the centrifugal blower 2 from The side of 203 surfaces of revolution of lobus cardiacus wheel;The import in the guidance air duct towards with the fan inlet 201 towards identical direction It stretches out, the import in the guidance air duct is set on the air inlet outer wall of the centrifugal impeller 203, and in order to make centrifugal impeller 203 can smoothly rotate in Blower Housing 204, guide and set between the import in air duct and the air inlet outer wall of centrifugal impeller 203 There is gap.
The centrifugal blower 2 is mounted in the fan shroud 1, and the fan inlet 201 of centrifugal blower 2 passes through from inside to outside The centrifugal blower of the fan shroud 1 passes through hole and extendes back outward.
Also there is air-supply outlet 101,202 phase of fan outlet of air-supply outlet 101 and centrifugal blower 2 on the fan shroud 1 It is right, between the fan outlet 202 and the air-supply outlet 101, it is provided with filtration channel 3, in the side of the filtration channel 3 On wall, it is provided with the annular filter structure for accommodating dustiness, the air-flow being discharged from the fan outlet 202, along the mistake The mode for filtering the inner wall rotation in channel 3, flows towards the air-supply outlet 101.
The annular filter structure includes: annular housing 4 and adsorbent material, and the annular housing 4 is by 5 He of circular filter net The inner wall of fan shroud 1 is formed, and the adsorbent material is filter cotton, is arranged in the annular housing 4, annular filter structure is used for Accommodate dustiness.
Sealing plate 6 is additionally provided between the centrifugal blower 2 and the fan shroud 1.The setting of sealing plate 6 is in guidance air duct Outer wall and the fan shroud 1 inner wall between, specifically, the outer of the sealing plate 6 is supported on the inner wall of the fan shroud 1 On the raised line 7 of upper setting, the interior edge of the sealing plate 6 is set on the outer wall of the Blower Housing 204.
Filter screen is equipped on the air-supply outlet 101 and the fan inlet 201.
Working principle
Using pressure fan towards when indoor air-supply, external air flow first pass around the filter screen at fan inlet 201 enter from Inside lobus cardiacus wheel 203, the centrifugal force generated by the rotation of centrifugal impeller 203, by air-flow to the outer outlets of centrifugal impeller 203 It throws away, enters air-flow in guidance air duct with rotation status, under the guidance in guidance air duct, air-flow is towards fan outlet 202 Direction flowing;After fan outlet 202 is discharged in air-flow, under the action of inertia force, continue to pass through filtration channel 3 with rotation status, Dustiness is got rid of in annular housing 4 in filtration channel 3, clean gas flow from air-supply outlet 101 be discharged, hence into arrive room It is interior.
Obviously, the above embodiments are merely examples for clarifying the description, and does not limit the embodiments.It is right For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of variation or It changes.There is no necessity and possibility to exhaust all the enbodiments.And it is extended from this it is obvious variation or It changes among the protection scope created still in the utility model.

Claims (10)

1. a kind of pressure fan, comprising:
Fan shroud (1) has air-supply outlet (101);
Centrifugal blower (2) is mounted in the fan shroud (1), has fan inlet (201) and fan outlet (202);
It is characterized in that, filtration channel (3) are provided between the fan outlet (202) and the air-supply outlet (101), On the side wall of the filtration channel (3), it is provided with the annular filter structure for accommodating dustiness, from the fan outlet (202) air-flow being discharged flows in a manner of along the rotation of the inner wall of the filtration channel (3) towards the air-supply outlet (101) It is dynamic.
2. pressure fan according to claim 1, which is characterized in that the annular filter structure includes passing through annular filter The inner wall of net (5) and the fan shroud (1), the annular housing (4) for being used to accommodate dustiness of formation.
3. pressure fan according to claim 2, which is characterized in that the annular filter structure further includes being arranged described In annular housing (4), for adsorbing the adsorbent material of dustiness.
4. pressure fan according to claim 3, which is characterized in that the adsorbent material is filter cotton.
5. pressure fan according to claim 1, which is characterized in that the fan outlet (202) of the centrifugal blower (2) is arranged In the side of centrifugal impeller (203) surfaces of revolution.
6. pressure fan according to claim 5, which is characterized in that the centrifugal blower (2), Blower Housing (204) with Between the outer ring of centrifugal impeller (203) be equipped with annular guidance air duct, it is described guidance air duct outlet, towards with the blower into The stretching in the opposite direction of mouthful (201), fan outlet (202) described in the export mixes in the guidance air duct.
7. pressure fan according to claim 6, which is characterized in that the import in the guidance air duct is set in the centrifugation On the air inlet outer wall of impeller (203).
8. pressure fan according to claim 7, which is characterized in that the outer wall in the guidance air duct and the fan shroud (1) Inner wall between, be provided with sealing plate (6).
9. pressure fan according to claim 8, which is characterized in that the sealing plate (6) is supported on the fan shroud (1) On the raised line (7) being arranged on inner wall.
10. pressure fan according to claim 1, which is characterized in that the air-supply outlet (101) and the fan inlet (201) filter screen is equipped on.
CN201822096086.9U 2018-12-13 2018-12-13 A kind of pressure fan Active CN209586801U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201822096086.9U CN209586801U (en) 2018-12-13 2018-12-13 A kind of pressure fan

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201822096086.9U CN209586801U (en) 2018-12-13 2018-12-13 A kind of pressure fan

Publications (1)

Publication Number Publication Date
CN209586801U true CN209586801U (en) 2019-11-05

Family

ID=68349275

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201822096086.9U Active CN209586801U (en) 2018-12-13 2018-12-13 A kind of pressure fan

Country Status (1)

Country Link
CN (1) CN209586801U (en)

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