CN104949175A - Tandem double-fan structure for extractor hood - Google Patents

Tandem double-fan structure for extractor hood Download PDF

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Publication number
CN104949175A
CN104949175A CN201410121401.2A CN201410121401A CN104949175A CN 104949175 A CN104949175 A CN 104949175A CN 201410121401 A CN201410121401 A CN 201410121401A CN 104949175 A CN104949175 A CN 104949175A
Authority
CN
China
Prior art keywords
blower fan
blower
air inlet
main
fan
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
CN201410121401.2A
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Chinese (zh)
Inventor
施旭娜
袁柯铭
朱逸
茅忠群
诸永定
王军元
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.)
Ningbo Fotile Kitchen Ware Co Ltd
Original Assignee
Ningbo Fotile Kitchen Ware Co Ltd
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 Ningbo Fotile Kitchen Ware Co Ltd filed Critical Ningbo Fotile Kitchen Ware Co Ltd
Priority to CN201410121401.2A priority Critical patent/CN104949175A/en
Publication of CN104949175A publication Critical patent/CN104949175A/en
Pending legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24CDOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C15/00Details
    • F24C15/20Removing cooking fumes

Abstract

The invention discloses a tandem double fan structure for an extractor hood. The tandem double fan structure comprises a primary blower and a secondary blower which are arranged in the outer cover of the blower, wherein an air outlet of the primary blower is communicated with phase fluid at an air inlet of the secondary blower. The tandem double fan structure is characterized in that the projection of the shell of the primary blower and the projection of the shell of the secondary blower are partly overlapped in the vertical direction, the lower edge of the air inlet of the secondary blower is positioned above the overlapping area, The tandem double fan structure for the extractor hood has the advantages that the primary blower and the secondary blower arranged in the outer cover of the blower have partially overlapped projection in the vertical projection, the lower edge of the air inlet of the secondary blower is positioned above the overlapped area, so that the height difference of the primary and secondary blowers in the vertical direction is not oversize, therefore, on the premise that the exhaust air flow of the blower is not influenced by the extractor hood, the height of the outer cover of the blower is shortened as far as possible, accordingly, after the extractor hood is installed, the outer cover of the blower is not close to a hearth, and the overall matching of the outer cover of the blower and a cabinet is more harmonious and beautiful.

Description

A kind of series connection two fans structure for range hood
Technical field
The present invention relates to a kind of range hood, especially relate to a kind of series connection two fans structure for range hood.
Background technology
Range hood air draft flow in a state of use depends primarily on the blast of cooking-fume exhauster blower system, and blast is larger, and air draft flow is also larger.The range hood of normal domestic use in use, oil smoke needs to be discharged by oil smoke by drag devices such as smoke exhaust pipe, check (non-return) valve and discharge flues, the existence of these drag devices, makes oil smoke there is certain back pressure at oil smoke outlet place, and the existence of back pressure can affect the air draft flow of lampblack absorber greatly.The discharge air flow of blast to range hood of blower fan system measures positive role, and the existence of back pressure then measures negative consequence to the discharge air flow of range hood.
In order to overcome the harmful effect that back pressure is brought as far as possible, people have devised the blower fan structure of a kind of two fans series connection.As application number for 201310248436.8(application publication number is CN103363563A) " a kind of lampblack absorber and control method thereof " disclosed in Chinese invention patent application, this lampblack absorber comprises casing, oil smoke import is provided with below casing, oil smoke outlet is provided with above casing, air intake vent and oil smoke inlet communication is provided with in casing, the blower fan system that air outlet is communicated with oil smoke exit passageway, this blower fan system includes the first centrifugal blower of air port and oil smoke inlet communication and the second centrifugal blower of air outlet and oil smoke outlet, and the connecting pipe bent by between the air outlet of the first centrifugal blower and the air intake vent of the second centrifugal blower is connected.This lampblack absorber increases the blast of blower fan system by mating two centrifugal blowers, make blower fan system in a state of use, even if there is larger back pressure also can obtain larger air draft flow, and the rotating speed of two centrifugal blowers is without the need to too high, noise is less, can meet the requirement of the efficient quiet suction of lampblack absorber.But, after above-mentioned lampblack absorber installs about two centrifugal blowers of connecting in casing, the height of blower hood will certainly be increased, and the height size of blower hood directly affects the overall appearance of range hood, be thus necessary to be further improved the installation site of two series connection centrifugal blowers on the basis of this existing lampblack absorber.
Summary of the invention
Technical problem to be solved by this invention is for above-mentioned prior art present situation, makes the series connection two fans structure for range hood that the height of blower hood reduces as far as possible under providing a kind of prerequisite not affecting blower fan air draft flow.
The present invention solves the problems of the technologies described above adopted technical scheme: this is used for the series connection two fans structure of range hood, comprise and be located at main blower fan in blower hood and secondary blower fan, the air outlet of described main blower fan and the air inlet configured in fluid communication of secondary blower fan, it is characterized in that: described main blower fan and secondary blower fan overlap in vertical projection, and along the top being positioned at described overlapping region under the air inlet of described secondary blower fan.
Preferably, the altitude range of described main blower fan and secondary blower fan overlapping region in vertical projection is 0 ~ 30mm.In above-mentioned scope, substantially can flow into secondary air inlet smoothly from the oil smoke of main frame fan outlet outflow and can not be intercepted.
Primary and secondary two-stage blower fan can have different position relationships, and preferably, described main blower fan and secondary blower fan vertically be arranged in parallel.
As a kind of preferred version that primary and secondary two-stage blower fan vertically be arranged in parallel, the air outlet of described main blower fan is connected by wind-guiding tube connector with the air inlet of secondary blower fan.Primary and secondary two-stage blower fan adopts wind-guiding tube connector, can promote the flow field of blower fan and reduce fan noise.
As the another kind of preferred version that primary and secondary two-stage blower fan vertically be arranged in parallel, between the air outlet of described main blower fan and the air inlet of secondary blower fan, be formed with the first closed chamber.Like this, the oil smoke flowed out from main frame fan outlet can enter secondary air inlet substantially, and is unlikely to flee in blower hood.
Further preferably, described main blower fan and secondary blower fan oblique parallel are arranged.
As a kind of preferred version that primary and secondary two-stage blower fan oblique parallel is arranged, the air outlet of described main blower fan is connected by wind-guiding tube connector with the air inlet of secondary blower fan.Primary and secondary two-stage blower fan adopts wind-guiding tube connector, can promote the flow field of blower fan and reduce fan noise.
As the another kind of preferred version that primary and secondary two-stage blower fan oblique parallel is arranged, described main blower fan and secondary blower fan dorsad separately the side of air inlet in blower hood, be formed with the second closed chamber respectively.By arrange the second closed chamber in blower hood after, the oil smoke flowed out from main frame fan outlet can enter secondary air inlet substantially, and is unlikely to flee in blower hood.
Compared with prior art, the invention has the advantages that: owing to being arranged on main blower fan in blower hood and secondary blower fan overlaps in vertical projection, and the lower edge of the air inlet of secondary blower fan is positioned at the top of described overlapping region, thus the upper-lower height difference of primary and secondary two-stage blower fan is unlikely to excessive, thus make range hood under the prerequisite not affecting blower fan air draft flow, the height of blower hood can shorten as far as possible, correspondingly, after range hood is installed, blower hood can not be too with the integral matching of cabinet more harmonious, attractive in appearance near the kitchen range top.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention one;
Fig. 2 is the structural representation of the embodiment of the present invention two;
Fig. 3 is the structural representation of the embodiment of the present invention three;
Fig. 4 is the structural representation of the embodiment of the present invention four.
Detailed description of the invention
Below in conjunction with accompanying drawing embodiment, the present invention is described in further detail.
Embodiment one:
As shown in Figure 1, the series connection two fans structure in the present embodiment comprises main blower fan 3 and secondary blower fan 4, and main blower fan 3 and secondary blower fan 4 are centrifugal blower and are arranged in blower hood 1, main fan outlet 32 and secondary air inlet 41 configured in fluid communication.In addition, main blower fan 3 and secondary blower fan 4 overlap in vertical projection, and secondary air inlet 41 times edges are positioned at the top of described overlapping region.
According to the difference of primary and secondary two-stage blower fan structure, the height of the overlapping region of above-mentioned vertical projection can change, in the present embodiment, the scope of the height h of this overlapping region is 0 ~ 30mm, optimum is 10 ~ 20mm, because secondary air inlet 41 times edges are positioned at the top of this overlapping region all the time, the oil smoke thus flowed out from main fan outlet 32 can enter smoothly in secondary air inlet 41 and substantially can not be intercepted.
In the present embodiment, main blower fan 3 and secondary blower fan 4 vertically be arranged in parallel in blower hood 1, and main fan outlet 32 is connected by wind-guiding tube connector 5 with secondary air inlet 41.
During range hood work, direction shown in arrow be oil smoke flow to, under the effect of primary and secondary two-stage blower fan, first, oil smoke is inhaled in main blower fan 3 by main air inlet 31, then, by being inhaled in secondary blower fan 4 after wind-guiding tube connector 5 after exhaust fume collecting hood 2 is collected, finally, flow in the discharge pipe (not shown) of range hood from secondary fan outlet 42.
Embodiment two:
As shown in Figure 2, the series connection two fans structure in the present embodiment forms the first closed chamber 61 between main fan outlet 32 and secondary air inlet 41.In the present embodiment, remaining blower fan structure is identical with the blower fan structure in embodiment one, does not launch to describe at this.
During range hood work, direction shown in arrow be oil smoke flow to, the oil smoke flowed out from main fan outlet 32 is directly entered in secondary blower fan 4 by this first closed chamber 61.Visible, form this first closed chamber 61 in blower hood 1 after, oil smoke can be avoided to flee in blower hood 1, to promote the flow field of blower fan and to reduce fan noise as far as possible.
Embodiment three:
As shown in Figure 3, the main blower fan 3 of the series connection two fans structure in the present embodiment and secondary blower fan 4 oblique parallel in blower hood 1 is arranged, and main fan outlet 32 is connected by wind-guiding tube connector 5 with secondary air inlet 41.The scope of the height h of main blower fan 3 and the overlapping region of secondary blower fan 4 in vertical projection is 0 ~ 30mm, and optimum is 10 ~ 20mm.The operation principle of the primary and secondary two-stage blower fan adopting wind-guiding tube connector 5 to connect is identical with the blower fan structure of embodiment one, does not launch to describe at this.
Embodiment four:
As shown in Figure 4, the side of the main blower fan 3 of the series connection two fans structure in the present embodiment main air inlet 31 is dorsad formed with the second closed chamber 62 in blower hood 1, and the side of secondary blower fan 4 secondary air inlet 41 is dorsad formed with the second closed chamber 62 in blower hood 1.In the present embodiment, remaining blower fan structure is identical with the blower fan structure in embodiment three, does not launch to describe at this.
During the work of range hood machine, direction shown in arrow be oil smoke flow to, first, oil smoke is inhaled in main blower fan 3 by main air inlet 31 after exhaust fume collecting hood 2 is collected, then, be inhaled in secondary blower fan 4 after entering blower hood 1, finally, flow in the discharge pipe (not shown) of range hood from secondary fan outlet 42.

Claims (8)

1. the series connection two fans structure for range hood, comprise and be located at main blower fan (3) in blower hood (1) and secondary blower fan (4), the air outlet of described main blower fan (3) and the air inlet configured in fluid communication of secondary blower fan (4), it is characterized in that: described main blower fan (3) and secondary blower fan (4) overlap in vertical projection, and along the top being positioned at described overlapping region under the air inlet of described secondary blower fan (4).
2. the series connection two fans structure for range hood according to claim 1, is characterized in that: the altitude range of described main blower fan (3) and secondary blower fan (4) overlapping region in vertical projection is 0 ~ 30mm.
3. the series connection two fans structure for range hood according to claim 1 and 2, is characterized in that: described main blower fan (3) and secondary blower fan (4) vertically be arranged in parallel.
4. the series connection two fans structure for range hood according to claim 3, is characterized in that: the air outlet of described main blower fan (3) is connected by wind-guiding tube connector (5) with the air inlet of secondary blower fan (4).
5. the series connection two fans structure for range hood according to claim 3, is characterized in that: be formed with the first closed chamber (61) between the air outlet of described main blower fan (3) and the air inlet of secondary blower fan (4).
6. the series connection two fans structure for range hood according to claim 1 and 2, is characterized in that: described main blower fan (3) and secondary blower fan (4) oblique parallel are arranged.
7. the series connection two fans structure for range hood according to claim 6, is characterized in that: the air outlet of described main blower fan (3) is connected by wind-guiding tube connector (5) with the air inlet of secondary blower fan (4).
8. the series connection two fans structure for range hood according to claim 6, is characterized in that: described main blower fan (3) and secondary blower fan (4) dorsad separately the side of air inlet in blower hood (1), be formed with the second closed chamber (62) respectively.
CN201410121401.2A 2014-03-27 2014-03-27 Tandem double-fan structure for extractor hood Pending CN104949175A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410121401.2A CN104949175A (en) 2014-03-27 2014-03-27 Tandem double-fan structure for extractor hood

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410121401.2A CN104949175A (en) 2014-03-27 2014-03-27 Tandem double-fan structure for extractor hood

Publications (1)

Publication Number Publication Date
CN104949175A true CN104949175A (en) 2015-09-30

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106482195A (en) * 2016-12-29 2017-03-08 宁波方太厨具有限公司 Series connection two fans noise reducing type range hood
CN106524268A (en) * 2016-12-30 2017-03-22 宁波方太厨具有限公司 Range hood with double series fans
CN106870425A (en) * 2016-11-14 2017-06-20 奇鋐科技股份有限公司 Tandem fan incline structure

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61184347A (en) * 1985-02-09 1986-08-18 Omron Tateisi Electronics Co Range hood
CN2511896Y (en) * 2001-08-14 2002-09-18 林官宝 Series connected cooker hood
CN202470170U (en) * 2012-02-17 2012-10-03 宁波方太厨具有限公司 Smoke exhauster with adaptively adjusted fan speed
CN103363563A (en) * 2013-06-21 2013-10-23 宁波方太厨具有限公司 Range hood and control method thereof
CN203321858U (en) * 2013-06-15 2013-12-04 吴钰 Relay flow fan and range hood equipped with relay flow fan
CN203810499U (en) * 2014-03-27 2014-09-03 宁波方太厨具有限公司 Serially-connecting double-air-blower structure for extractor hood

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61184347A (en) * 1985-02-09 1986-08-18 Omron Tateisi Electronics Co Range hood
CN2511896Y (en) * 2001-08-14 2002-09-18 林官宝 Series connected cooker hood
CN202470170U (en) * 2012-02-17 2012-10-03 宁波方太厨具有限公司 Smoke exhauster with adaptively adjusted fan speed
CN203321858U (en) * 2013-06-15 2013-12-04 吴钰 Relay flow fan and range hood equipped with relay flow fan
CN103363563A (en) * 2013-06-21 2013-10-23 宁波方太厨具有限公司 Range hood and control method thereof
CN203810499U (en) * 2014-03-27 2014-09-03 宁波方太厨具有限公司 Serially-connecting double-air-blower structure for extractor hood

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106870425A (en) * 2016-11-14 2017-06-20 奇鋐科技股份有限公司 Tandem fan incline structure
CN106482195A (en) * 2016-12-29 2017-03-08 宁波方太厨具有限公司 Series connection two fans noise reducing type range hood
CN106524268A (en) * 2016-12-30 2017-03-22 宁波方太厨具有限公司 Range hood with double series fans

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Application publication date: 20150930

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