CN105673567B - Range hood and its fan assembly - Google Patents
Range hood and its fan assembly Download PDFInfo
- Publication number
- CN105673567B CN105673567B CN201610092204.1A CN201610092204A CN105673567B CN 105673567 B CN105673567 B CN 105673567B CN 201610092204 A CN201610092204 A CN 201610092204A CN 105673567 B CN105673567 B CN 105673567B
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- CN
- China
- Prior art keywords
- spiral case
- chamber body
- cowling panel
- range hood
- panel
- 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.)
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Classifications
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- 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
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
- F04D29/4226—Fan casings
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- 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
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/44—Fluid-guiding means, e.g. diffusers
- F04D29/441—Fluid-guiding means, e.g. diffusers especially adapted for elastic fluid pumps
-
- 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
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/663—Sound attenuation
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- 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
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/667—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps by influencing the flow pattern, e.g. suppression of turbulence
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C15/00—Details
- F24C15/20—Removing cooking fumes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2240/00—Components
- F05D2240/10—Stators
- F05D2240/12—Fluid guiding means, e.g. vanes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2240/00—Components
- F05D2240/10—Stators
- F05D2240/14—Casings or housings protecting or supporting assemblies within
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2260/00—Function
- F05D2260/96—Preventing, counteracting or reducing vibration or noise
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The present invention provides a kind of range hood and its fan assemblies.Wherein, the fan assembly of range hood includes the spiral case with left chamber body and right chamber body, be respectively received in left chamber body and the impeller in right chamber body, with the coaxially connected motor of impeller and the check-valves at volute outlet, the end of snail shell coiling molded line is equipped with the cowling panel extended to volute outlet direction, left chamber body and right chamber body set up separately in cowling panel both sides, and are connected to form left air-out passage and right air-out passage with volute outlet respectively；Cowling panel includes the left arc panel being connected to each other and right arc panel, along the end of snail shell coiling molded line to volute outlet direction, horizontal distance between left arc panel and right arc panel first gradually increases, after be gradually reduced so that cowling panel is in integrally fusiformis.The fan assembly of range hood provided by the invention reduces left side air-flow and right side gas flows converge at volute outlet and the pneumatic microseismic noise that generates under the premise of not reducing spiral case entirety guide performance.
Description
Technical field
The present invention relates to kitchen utensils fields, more specifically, are related to a kind of fan assembly of range hood and including should
The range hood of fan assembly.
Background technology
With the promotion of people's quality of the life, user is increasingly paid close attention to it using range hood and runs noise level, simultaneously
It is domestic also range hood operation noise management and control standard receive sternly；And current market sales of two fans range hood is general
The store-through problem big in noise, the reason is that two fans smoke machine or so motor speed is different and leads to left and right rotation speed of fan not
Together, and then left and right air-flow carries out friction when air outlet position converges and generates larger pneumatic microseismic noise.
For the big problem of above-mentioned noise, generally use improves the consistency of left and right motor speed at present, to reduce noise,
But the manufacturing process of current motor can only accomplish ± 30 turns of difference, cause noise reduction undesirable；Or using reduction motor
Rotating speed slows down the aerodynamic noise that brings of friction, but can substantially reduce compressor flow in this way, leads to the smoke discharging effect of range hood
Difference.
Invention content
The present invention is directed at least solve one of the technical problems existing in the prior art.
For this purpose, the purpose of one aspect of the present invention is, a kind of effective fume-exhausting for reducing pneumatic microseismic noise is provided
The fan assembly of machine.
The purpose of another aspect of the present invention is, provides a kind of range hood including above-mentioned fan assembly.
To achieve the above object, the embodiment of one aspect of the present invention provides a kind of fan assembly of range hood,
Include spiral case with left chamber body and right chamber body, be respectively received in the left chamber body and the impeller in the right chamber body, with it is described
The coaxially connected motor of impeller and the check-valves at the volute outlet of the spiral case, the end of the snail shell coiling molded line
End is equipped with the cowling panel extended to the volute outlet direction, and the left chamber body and the right chamber body set up separately in the cowling panel two
Side, and be connected to form left air-out passage and right air-out passage with the volute outlet respectively；Wherein, the cowling panel includes phase
The left arc panel and right arc panel of docking, along the end of the snail shell coiling molded line to the volute outlet direction, the left arc
Horizontal distance between shape plate and the right arc panel first gradually increases, after be gradually reduced so that the cowling panel is in integrally shuttle
Shape.
The above embodiment of the present invention provide range hood fan assembly, by spiral case be equipped with separate left chamber body and
The cowling panel of right chamber body separates the left and right air-flow blown out in spiral case, reduces left and right air-flow to a certain extent in spiral case
Converge the noise that friction generates in exit；Cowling panel is to be connected to each other the fusiformis structure formed by left arc panel and right arc panel, this
Sample wheel rotation drives the air-flow in left chamber body and right chamber body to be flowed along internal chamber wall, when air-flow flows to left arc panel and right arc
It will continue to move ahead along this arc panel when plate, since cowling panel is in integrally fusiformis, increases the distance that air-flow flows through and make to bring about the desired sensation
Stream has one section of climbing distance, to make the flow velocity close to air-flow at cowling panel substantially reduce, i.e., so that left and right air-flow is before converging
Notable reduction of speed, to significantly reduce left and right air-flow converge at volute outlet and the pneumatic microseismic noise that generates；In other words,
The fan assembly for the range hood that the above embodiment of the present invention provides, under the premise of not reducing spiral case entirety guide performance, i.e.,
In the case where not reducing motor and wheel speed in spiral case, the exit velocity near the cavity centre position of left and right is reduced, from
And reduce left and right air-flow converge at volute outlet and the pneumatic microseismic noise that generates, improve the quality of range hood.
In addition, the fan assembly for the range hood that the above embodiment of the present invention provides also has following additional technical feature：
According to one embodiment of present invention, there is the Drainage Section being successively smoothly connected, flow control on the cowling panel
Section and unhurried current section, one end of the Drainage Section is connected smoothly with the flow control section, the other end of the Drainage Section with it is described
The end of snail shell coiling molded line is connected smoothly.
In above-described embodiment, cowling panel Drainage Section and the end of snail shell coiling molded line are connected smoothly, and such impeller turns
When the dynamic air-flow driven in left chamber body and right chamber body is flowed along internal chamber wall, reduces gas shock, do not changing the original stream of air-flow
In the case of speed so that air-flow reaches the flow control section of cowling panel, and air-flow can be divided into two parts in flow control section, and a part of air-flow continues
It is flowed along flow control section, and gradually reduction of speed flows to the unhurried current section of cowling panel, to make the air-flow of cowling panel unhurried current section compare rectification
The air-flow of plate Drainage Section, flow velocity are effectively reduced, to which flow velocity obtains significantly when left and right air-flow being made to converge at volute outlet
It reduces, to be substantially reduced pneumatic microseismic noise, and another part air-flow is then along the tangential direction of Drainage Section to away from cowling panel
Direction flow away, to compared with the spiral case inlet pressure of not cowling panel, the air-flow near spiral case median plane is disperseed, and kinetic energy is in snail
Shell exit is more evenly distributed.
According to one embodiment of present invention, the spiral case has spiral case median plane, the left chamber body and the right chamber body
The interior motor is symmetrical about the spiral case median plane, and the cowling panel is located on the spiral case median plane, the left arc
Plate and the right arc panel are symmetrical about the spiral case median plane.
In above-described embodiment, the motor in left chamber body and right chamber body is symmetrical about spiral case median plane, so that being located at left chamber
Internal lobus sinister wheel and the lobus dexter wheel in right chamber body rotate in mutually opposite directions, and rectification using spiral case median plane as symmetry axis
The left arc panel and right arc panel of plate are symmetrical about spiral case median plane, to reduce the left side air-flow that is blown out by left chamber body and by right chamber
The phase difference and speed difference of the right side gas flows of body blowout produce to reduce left side air-flow and right side gas flows when volute outlet converges
Raw pneumatic microseismic noise.
According to one embodiment of present invention, the spiral case has the volute tongue set up separately in the cowling panel both sides, the snail
The inner surface of tongue is to the most flood between the shortest distance L1, the left arc panel and the right arc panel of the spiral case median plane
Flat distance L2 and the inner surface of the volute tongue are to the relationship between the shortest distance L3 of the outer surface of the cowling panel：L1=
0.5L2+L3。
According to one embodiment of present invention, at the shortest distance away from the spiral case median plane on the inner surface of the volute tongue
Line with the maximum distance apart away from the spiral case median plane on the outer surface of the cowling panel is perpendicular to the spiral case median plane.
In above-described embodiment so that the plane where the shortest distance of the outer surface of the inner surface of volute tongue to cowling panel and snail
Shell median plane is vertical, in this way, when the flow control section of air motion to cowling panel, air-flow is biased to volute tongue by volute tongue and cowling panel control
Wall flow, when air-flow flows through the shortest distance of the volute tongue inner surface to cowling panel outer surface, as air-flow shuts off the expansion in face,
Air-flow starts reduction of speed unhurried current, is flowed at volute outlet until along the unhurried current section of cowling panel, left side air-flow and right side gas flows are in snail
Shell exit is converged, due to left side air-flow and right side gas flows before converging notable reduction of speed, significantly reduce because of left side
The pneumatic microseismic noise that air-flow is generated with right side gas flows there are phase difference and speed difference.
According to one embodiment of present invention, the shortest distance of the inner surface of the volute tongue to the outer surface of the cowling panel
L3 and the impeller are to the relationship between the shortest distance L4 of the spiral case median plane：1.2L4≤L3≤1.5L4.
In above-described embodiment, the shortest distance L3 of inner surface to the outer surface of cowling panel of volute tongue is more than in impeller to spiral case
The shortest distance L4 in heart face, so that when the air-flow in left chamber body and right chamber body flow through impeller to spiral case median plane most short distance
From rear, air-flow face of shutting off is gradually expanded, and to slowly reduce flow velocity when air-flow flows at volute outlet, reduces pneumatic pulsation and makes an uproar
Sound；And control 1.2L4≤L3≤1.5L4, to avoid L3 values it is excessive and cause the flow velocity at volute outlet it is too low, influence oil suction
The case where exhaust effect of smoke machine, occurs.
According to one embodiment of present invention, the spiral case includes spiral case coaming plate, spiral case foreboard and spiral case backboard, the snail
Shell foreboard and the spiral case backboard are connected with the both ends of the surface of the spiral case coaming plate respectively, and the cowling panel is connected to the spiral case
On coaming plate.
According to one embodiment of present invention, the cowling panel and the spiral case coaming plate integrated molding.
In above-described embodiment, cowling panel and spiral case coaming plate integrated molding so that the molding work of cowling panel and spiral case coaming plate
Skill is simple, easy to process, and reduces installation steps, improves production efficiency.
According to one embodiment of present invention, it is respectively equipped in the both ends of the surface of the spiral case coaming plate towards the spiral case foreboard
With the insert sheet for positioning of the spiral case backboard, it is respectively equipped with and the insert sheet for positioning pair on the spiral case foreboard and the spiral case backboard
The positioning jack answered.
In above-described embodiment, the location and installation by the way of grafting between spiral case coaming plate and spiral case foreboard, spiral case backboard,
And, using welding manner, can realize being fixedly secured between spiral case coaming plate and spiral case foreboard, spiral case backboard after location and installation,
It is simple in structure, it is easy for installation.
The embodiment of another aspect of the present invention provides a kind of range hood, including described in any of the above-described embodiment
The fan assembly of range hood, and the advantageous effect of the fan assembly with the range hood described in any of the above-described embodiment.
The additional aspect and advantage of the present invention will become apparent in following description section, or practice through the invention
Recognize.
Description of the drawings
The above-mentioned and/or additional aspect and advantage of the present invention will become in the description from combination following accompanying drawings to embodiment
Obviously and it is readily appreciated that, wherein：
Fig. 1 is the decomposition texture schematic diagram of fan assembly described in one embodiment of the invention；
Fig. 2 is the decomposition texture schematic diagram of spiral case in fan assembly shown in Fig. 1；
Fig. 3 is the dimensional structure diagram after section components assembly in fan assembly shown in Fig. 1, wherein the curve in diagram
Arrow indicates the flow direction of air-flow；
Fig. 4 is the main structure diagram after section components assembly in fan assembly shown in Fig. 1.
Wherein, the correspondence in Fig. 1 to Fig. 4 between reference numeral and component names is：
10 spiral cases, 101 volute outlets, the end of 102 snail shell coiling molded line, 103 spiral case median planes, 104,105 volute tongues, 11
Cowling panel, 111 left arc panels, 112 right arc panels, 113 Drainage Sections, 114 flow control sections, 115 unhurried current sections, 12 spiral case coaming plates, 121 is fixed
Position inserted sheet, 13 spiral case foreboards, 131 positioning jacks, 14 spiral case backboards, 141 positioning jacks, 21 lobus sinister wheels, 22 lobus dexter wheels, 31 left electricity
Machine, 32 right motors, 40 check-valves, 51 left locking nuts, 52 right locking nuts, 61 left Inlet Networks, 62 right Inlet Networks.
Specific implementation mode
To better understand the objects, features and advantages of the present invention, below in conjunction with the accompanying drawings and specific real
Mode is applied the present invention is further described in detail.It should be noted that in the absence of conflict, the implementation of the application
Feature in example and embodiment can be combined with each other.
Many details are elaborated in the following description to facilitate a thorough understanding of the present invention, still, the present invention may be used also
By using other, different from implementing in a manner of described here, therefore, protection scope of the present invention is not by following public tool
The limitation of body embodiment.
The fan assembly and range hood of range hood according to some embodiments of the invention are described with reference to the accompanying drawings.
As shown in Figures 1 to 4, the fan assembly of the range hood provided according to some embodiments of the invention, including have
The spiral case 10 of left chamber body and right chamber body, the lobus sinister wheel 21 being contained in left chamber body and the lobus dexter wheel 22 being contained in right chamber body, with
The coaxially connected left motor 31 of lobus sinister wheel 21 and the right motor 32 coaxially connected with lobus dexter wheel 22 and the spiral case mounted on spiral case 10
Export the check-valves 40 at 101.
Wherein, the end 102 of snail shell coiling molded line is equipped with the cowling panel 11 extended to 101 direction of volute outlet, left chamber body
Set up separately in 11 both sides of cowling panel with right chamber body, and is connected with volute outlet 101 to form left air-out passage and right outlet air is logical respectively
Road；
As depicted in figs. 1 and 2, cowling panel 11 includes the left arc panel 111 being connected to each other and right arc panel 112, along spiral case spiral shell
The end 102 of molded line is revolved to 101 direction of volute outlet, and the horizontal distance between left arc panel 111 and right arc panel 112 is first gradual
Increase, after be gradually reduced so that it is in fusiformis that cowling panel 11 is whole.
The fan assembly for the range hood that the above embodiment of the present invention provides separates left chamber body by being equipped on spiral case 10
With the cowling panel 11 of right chamber body, the left and right air-flow blown out in spiral case 10 is separated, reduces left and right air-flow to a certain extent
Converge the noise that friction generates at volute outlet 101；Cowling panel 11 is to be connected to each other by left arc panel 111 and right arc panel 112
The fusiformis structure of formation, such wheel rotation drives the air-flow in left chamber body and right chamber body to be flowed along internal chamber wall, when air-flow stream
It will continue to move ahead along this arc panel when to left arc panel 111 and right arc panel 112, be in fusiformis since cowling panel 11 is whole, increase
Distance that big air-flow flows through simultaneously makes air-flow have one section of climbing distance, to make close to air-flow at cowling panel 11 flow velocity significantly
It reduces, i.e., so that left and right air-flow notable reduction of speed before converging, converges to significantly reduce left and right air-flow at volute outlet 101
The pneumatic microseismic noise closed and generated；In other words, the fan assembly for the range hood that the above embodiment of the present invention provides, is not dropping
Under the premise of the whole guide performance of low spiral case 10, i.e., in the case where not reducing motor and wheel speed in spiral case 10, reduce
Exit velocity near the cavity centre position of left and right converges at volute outlet 101 and is generated to reduce left and right air-flow
Pneumatic microseismic noise improves the quality of range hood.
As shown in Figure 1, the fan assembly of the range hood further includes：For lobus sinister wheel 21 to be fixed on left motor 31
Left locking nut 51 on motor shaft and the right locking nut 52 for being fixed on lobus dexter wheel 22 on the motor shaft of right motor 32,
And mounted on lobus sinister wheel 21 air inlet left Inlet Network 61 and air inlet mounted on lobus dexter wheel 22 right Inlet Network 62.
In one embodiment of the present of invention, has be successively smoothly connected as shown in Figure 3 and Figure 4, on cowling panel 11
Drainage Section 113, flow control section 114 and unhurried current section 115, one end and the flow control section 114 of Drainage Section 113 are connected smoothly, Drainage Section
The end 102 of 113 other end and snail shell coiling molded line is connected smoothly.
In above-described embodiment, 11 Drainage Section 113 of cowling panel and the end of snail shell coiling molded line are connected smoothly, such leaf
When wheel rotation drives the air-flow in left chamber body and right chamber body to be flowed along internal chamber wall, reduce gas shock, does not change air-flow original
In the case of having flow velocity so that air-flow reaches the flow control section 114 of cowling panel 11, and air-flow can be divided into two parts in flow control section 114, such as
Air current flow direction shown in curve arrow in Fig. 3, a part of air-flow continues to flow along flow control section 114, and gradual deceleration flow
It moves to the unhurried current section 115 of cowling panel 11, to make the air-flow of the unhurried current section 115 of cowling panel 11 compared to 11 Drainage Section 113 of cowling panel
Air-flow, flow velocity are effectively reduced, to which flow velocity is significantly reduced when left and right air-flow being made to converge at volute outlet 101, from
And it is substantially reduced pneumatic microseismic noise, and another part air-flow is then along the tangential direction of Drainage Section 113 to away from cowling panel 11
Direction flows away, to which compared with 10 molded line of spiral case of no cowling panel 11, the air-flow near 10 median plane of spiral case is disperseed, kinetic energy
Being more evenly distributed at volute outlet 101.
In one embodiment of the present of invention, as shown in figure 4, spiral case 10 has spiral case median plane 103, left motor 31 and right electricity
Machine 32 is symmetrical about spiral case median plane 103, and cowling panel 11 is located on spiral case median plane 103, left arc panel 111 and right arc panel
112 is symmetrical about spiral case median plane 103.
In above-described embodiment, left motor 31 and right motor 32 are symmetrical about spiral case median plane 103, so that 21 He of lobus sinister wheel
Lobus dexter wheel 22 is symmetry axis with spiral case median plane 103, is rotated in mutually opposite directions, and the left arc panel 111 of cowling panel 11 and right arc
Shape plate 112 is symmetrical about spiral case median plane 103, to reduce the left side air-flow blown out by left chamber body and the right side blown out by right chamber body
The phase difference and speed difference of air-flow, to reduce left side air-flow and right side gas flows generated when volute outlet 101 converges it is pneumatic
Microseismic noise.
In one embodiment of the present of invention, as shown in Figure 3 and Figure 4, spiral case 10 has the snail set up separately in 11 both sides of cowling panel
Tongue 104,105, the shortest distance L1, left arc panel 111 and right arc of the inner surface of volute tongue 104,105 to spiral case median plane 103
Shortest distance L3 of the inner surface of maximum horizontal range L2 and volute tongue 104,105 between plate 112 to the outer surface of cowling panel 11
Between relationship be：L1=0.5L2+L3.
Preferably, as shown in figure 4, on the inner surface of volute tongue 104,105 at the shortest distance away from spiral case median plane 103 with it is whole
The line of maximum distance apart away from spiral case median plane 103 on the outer surface of flowing plate 11 is perpendicular to spiral case median plane 103.
In above-described embodiment so where the shortest distance of the inner surface of volute tongue 104,105 to the outer surface of cowling panel 11
Plane it is vertical with spiral case median plane 103, in this way, when the flow control section 114 of air motion to cowling panel 11, air-flow is by volute tongue
104,105 and the control of cowling panel 11 be biased to volute tongue 104,105 wall flows, when air-flow flows through volute tongue 104,105 inner surfaces to whole
When the shortest distance of 11 outer surface of flowing plate, as air-flow shuts off the expansion in face, air-flow starts reduction of speed unhurried current, until along cowling panel
11 unhurried current section 115 flows at volute outlet 101, and left side air-flow and right side gas flows converge at volute outlet 101, due to left side
Air-flow and the right side gas flows notable reduction of speed before converging, therefore significantly reduce that there are phases with right side gas flows because of left side air-flow
Difference and speed difference and the pneumatic microseismic noise that generates.
In one embodiment of the present of invention, as shown in figure 4, the inner surface of volute tongue 104,105 is to the outer surface of cowling panel 11
Shortest distance L3 and impeller be to the relationship between the shortest distance L4 of spiral case median plane 103：1.2L4≤L3≤1.5L4.
In above-described embodiment, the shortest distance L3 of inner surface to the outer surface of cowling panel 11 of volute tongue 104,105 is more than leaf
Take turns to the shortest distance L4 of spiral case median plane 103, so that when the air-flow in left chamber body and right chamber body flows through impeller to spiral case
After the shortest distance of median plane 103, air-flow face of shutting off is gradually expanded, when being flowed at volute outlet 101 to slowly reduce air-flow
Flow velocity, reduce pneumatic microseismic noise；And 1.2L4≤L3≤1.5L4 is controlled, it is excessive and lead to volute outlet to avoid L3 values
Flow velocity at 101 is too low, influences the case where exhaust effect of range hood occurs.
In one embodiment of the present of invention, as depicted in figs. 1 and 2, spiral case 10 includes spiral case coaming plate 12,13 and of spiral case foreboard
Spiral case backboard 14, spiral case foreboard 13 and spiral case backboard 14 are connected with the both ends of the surface of spiral case coaming plate 12 respectively, and cowling panel 11 connects
On spiral case coaming plate 12.
Preferably, cowling panel 11 and 12 integrated molding of spiral case coaming plate.
In above-described embodiment, cowling panel 11 and 12 integrated molding of spiral case coaming plate so that cowling panel 11 and spiral case coaming plate 12
Moulding process it is simple, it is easy to process, and reduce installation steps, improve production efficiency, certainly, clamping or spiral shell can also be used
It the connection types such as connects cowling panel 11 is mounted on spiral case coaming plate 12, can achieve the object of the present invention.
Further, as shown in Figures 2 and 3, it is respectively equipped in the both ends of the surface of spiral case coaming plate 12 towards spiral case foreboard 13 and snail
Positioning corresponding with insert sheet for positioning 121 is respectively equipped on the insert sheet for positioning 121 of shell backboard 14, spiral case foreboard 13 and spiral case backboard 14
Jack 131,141.
In above-described embodiment, determined between spiral case coaming plate 12 and spiral case foreboard 13, spiral case backboard 14 by the way of grafting
Position installation, and can after location and installation, using welding manner, realize spiral case coaming plate 12 and spiral case foreboard 13, spiral case backboard 14 it
Between be fixedly secured, it is simple in structure, it is easy for installation.
The embodiment of another aspect of the present invention provides a kind of range hood (not shown), including any of the above-described
The fan assembly of range hood described in embodiment, and the whole of the fan assembly with the range hood described in above-described embodiment
Advantageous effect, details are not described herein.
In conclusion the fan assembly for the range hood that the above embodiment of the present invention provides, is divided by being equipped on spiral case
Every the cowling panel of left chamber body and right chamber body, and cowling panel is to be connected to each other the fusiformis structure formed by left arc panel and right arc panel,
It will continue to move ahead along this arc panel when air-flow flows to left arc panel and right arc panel in this way, since cowling panel is in integrally shuttle
Shape increases the distance that air-flow flows through and air-flow is made to have one section of climbing distance, to make the flow velocity close to air-flow at cowling panel
It substantially reduces, i.e., so that left and right air-flow notable reduction of speed before converging, to significantly reduce left and right air-flow at volute outlet
The pneumatic microseismic noise converged and generated, under the premise of not reducing spiral case entirety guide performance, reduce left and right air-flow
The pneumatic microseismic noise converged at volute outlet and generated improves the quality of range hood.
In the description of the present invention, unless otherwise prescribed or explanation, term " connection ", " connected " etc. should all do broad sense reason
Solution, for example, " connection " may be fixed connection or may be dismantle connection, or integral connection, or electrical connection；Can be
It is connected directly, it can also be indirectly connected through an intermediary.It for the ordinary skill in the art, can be according to specific
Situation understands the concrete meaning of above-mentioned term in the present invention.
In the description of this specification, the description of term " one embodiment ", " some embodiments " etc. means to combine the reality
The particular features, structures, materials, or characteristics for applying example or example description are included at least one embodiment or example of the invention.
In the present specification, schematic expression of the above terms are not necessarily referring to identical embodiment or example.Moreover, description
Particular features, structures, materials, or characteristics can be combined in any suitable manner in any one or more of the embodiments or examples.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, any made by repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of fan assembly of range hood, includes spiral case with left chamber body and right chamber body, is respectively received in the left chamber
Body and impeller in the right chamber body, with the coaxially connected motor of the impeller and at the volute outlet of the spiral case
Check-valves, which is characterized in that
The end of the snail shell coiling molded line is equipped with the cowling panel that extends to the volute outlet direction, the left chamber body and described
Right chamber body sets up separately in the cowling panel both sides, and is connected with the volute outlet to form left air-out passage and right outlet air is logical respectively
Road；
Wherein, the cowling panel includes the left arc panel being connected to each other and right arc panel, along the end of the snail shell coiling molded line to
The volute outlet direction, the horizontal distance between the left arc panel and the right arc panel first gradually increase, gradually subtract afterwards
It is small, so that the cowling panel is in integrally fusiformis.
2. the fan assembly of range hood according to claim 1, which is characterized in that
There is the Drainage Section being successively smoothly connected, flow control section and unhurried current section, one end of the Drainage Section on the cowling panel
It is connected smoothly with the flow control section, the other end of the Drainage Section and the end of the snail shell coiling molded line seamlessly transit company
It connects.
3. the fan assembly of range hood according to claim 1, which is characterized in that
The spiral case has spiral case median plane, and the motor in the left chamber body and the right chamber body is about the spiral case center
Face is symmetrical, and the cowling panel is located on the spiral case median plane, and the left arc panel and the right arc panel are about the spiral case
Median plane is symmetrical.
4. the fan assembly of range hood according to claim 3, which is characterized in that
The spiral case, which has, sets up volute tongue in the cowling panel both sides separately, the inner surface of the volute tongue to the spiral case median plane
The inner surface of maximum horizontal range L2 and the volute tongue between shortest distance L1, the left arc panel and the right arc panel arrive
Relationship between the shortest distance L3 of the outer surface of the cowling panel is：L1=0.5L2+L3.
5. the fan assembly of range hood according to claim 4, which is characterized in that
Away from institute at the shortest distance away from the spiral case median plane on the inner surface of the volute tongue and outer surface of the cowling panel
The line of the maximum distance apart of spiral case median plane is stated perpendicular to the spiral case median plane.
6. the fan assembly of range hood according to claim 4, which is characterized in that
Shortest distance L3 and the impeller to the spiral case center of the inner surface of the volute tongue to the outer surface of the cowling panel
Relationship between the shortest distance L4 in face is：1.2L4≤L3≤1.5L4.
7. the fan assembly of range hood according to any one of claim 1 to 6, which is characterized in that
The spiral case includes spiral case coaming plate, spiral case foreboard and spiral case backboard, the spiral case foreboard and the spiral case backboard respectively with
The both ends of the surface of the spiral case coaming plate are connected, and the cowling panel is connected on the spiral case coaming plate.
8. the fan assembly of range hood according to claim 7, which is characterized in that
The cowling panel and the spiral case coaming plate integrated molding.
9. the fan assembly of range hood according to claim 8, which is characterized in that
The insert sheet for positioning towards the spiral case foreboard and the spiral case backboard, institute are respectively equipped in the both ends of the surface of the spiral case coaming plate
It states and is respectively equipped with positioning jack corresponding with the insert sheet for positioning on spiral case foreboard and the spiral case backboard.
10. a kind of range hood, which is characterized in that include the wind turbine of range hood as claimed in any one of claims 1-9 wherein
Component.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610092204.1A CN105673567B (en) | 2016-02-18 | 2016-02-18 | Range hood and its fan assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610092204.1A CN105673567B (en) | 2016-02-18 | 2016-02-18 | Range hood and its fan assembly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105673567A CN105673567A (en) | 2016-06-15 |
| CN105673567B true CN105673567B (en) | 2018-11-13 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610092204.1A Active CN105673567B (en) | 2016-02-18 | 2016-02-18 | Range hood and its fan assembly |
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| Country | Link |
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| CN (1) | CN105673567B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107023867A (en) * | 2017-05-03 | 2017-08-08 | 广东美的厨房电器制造有限公司 | Oil smoke flow guiding structure and two fans range hood applied to two fans range hood |
| CN107270354A (en) * | 2017-07-31 | 2017-10-20 | 广东美的厨房电器制造有限公司 | Fan assembly and range hood |
| CN110274279B (en) * | 2018-03-16 | 2024-01-23 | 宁波方太厨具有限公司 | Range hood with parallel fans |
| CN112664479B (en) | 2020-10-20 | 2022-04-19 | 宁波方太厨具有限公司 | Fume exhaust fan |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204648615U (en) * | 2015-03-23 | 2015-09-16 | 上海习智环保科技有限公司 | Air purifier fan assembly lower cover |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19809559A1 (en) * | 1998-03-05 | 1999-09-09 | Bosch Siemens Hausgeraete | Extractor hood |
| DE10008014A1 (en) * | 2000-02-22 | 2001-08-23 | Bsh Bosch Siemens Hausgeraete | Vapor extractor hood, e.g. for kitchen, with central region of underside in inverted vee shape |
| CN1506622A (en) * | 2002-12-09 | 2004-06-23 | 上海开心电器有限公司 | Duplex centrifugal blower with great wind rate and less noise for kitchen ventilator |
| CN102261690A (en) * | 2011-09-09 | 2011-11-30 | 宁波舜韵电子有限公司 | External exhaust and internal circulation type thin smoke exhaust ventilator |
| CN104913359B (en) * | 2015-07-06 | 2017-07-28 | 宁夏康诚机电产品设计有限公司 | Double volute lampblack absorber |
| CN105090121B (en) * | 2015-09-08 | 2017-10-27 | 广东美的厨房电器制造有限公司 | Spiral case for range hood |
| CN205383089U (en) * | 2016-02-18 | 2016-07-13 | 广东美的厨房电器制造有限公司 | Range hood and fan subassembly thereof |
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2016
- 2016-02-18 CN CN201610092204.1A patent/CN105673567B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204648615U (en) * | 2015-03-23 | 2015-09-16 | 上海习智环保科技有限公司 | Air purifier fan assembly lower cover |
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| CN105673567A (en) | 2016-06-15 |
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