CN109790851A - Air inlet shell and corresponding motor vehicles heating, ventilation and/or air-conditioning device - Google Patents
Air inlet shell and corresponding motor vehicles heating, ventilation and/or air-conditioning device Download PDFInfo
- Publication number
- CN109790851A CN109790851A CN201780056326.8A CN201780056326A CN109790851A CN 109790851 A CN109790851 A CN 109790851A CN 201780056326 A CN201780056326 A CN 201780056326A CN 109790851 A CN109790851 A CN 109790851A
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- China
- Prior art keywords
- air
- air inlet
- deflector
- spiral case
- inlet shell
- 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
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00457—Ventilation unit, e.g. combined with a radiator
- B60H1/00471—The ventilator being of the radial type, i.e. with radial expulsion of the air
-
- 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
- F04D29/26—Rotors specially for elastic fluids
- F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
- F04D29/281—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers
- F04D29/282—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers the leading edge of each vane being substantially parallel to the rotation axis
- F04D29/283—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers the leading edge of each vane being substantially parallel to the rotation axis rotors of the squirrel-cage type
-
- 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
- F04D29/422—Discharge tongues
Abstract
The present invention relates to a kind of air inlet shell (1), especially it is used for motor vehicles heating, ventilation and/or air-conditioning device, it include: at least one air intake, at least one air outlet slit (21), and-spiral case (17): it is configured to receive the impeller of motor-driven fan unit, the impeller is configured to suck the air stream from air intake, and has and start simultaneously evolution until the profile of air outlet slit (21) with spiral case nose (19).According to the present invention, the air inlet shell (1) further includes at least one deflector (29), it extends in the extendible portion of the wall (18) of spiral case (17) from spiral case nose (19), and-the deflector (29) has conical by its shape.The invention further relates to a kind of heating, ventilations and/or air-conditioning device including this air inlet shell (1).
Description
Technical field
The invention belongs to divulge information, heat and/or air-conditioning device field.The present invention is more particularly directed to a kind of air inlet shell,
Especially it is used for this device.
Background technique
In automotive field, usually vehicle is equipped with ventilation, heating and/or air-conditioning device, to pass through the passenger compartment in vehicle
Middle distribution air come control include air in vehicle's passenger compartment gas thermal parameter.
This device includes air inlet shell, equipped with air intake, also referred to as air inlet, to allow at least one
Air stream enters air inlet shell.This can be the extraneous air stream outside vehicle's passenger compartment or comes from interior passenger compartment
Recirculation air flow.
Heating, ventilation and/or air-conditioning device further include motorized fan unit, also referred to as air blower.Motorized fan unit is special
The blast fan that Bao Kuo be placed in the spiral case of air inlet shell and the motor for being designed to rotate blast fan, so as to
Suck the air stream of the air intake from air inlet shell.No matter the air stream is from external or recycling, peace
Setting the blast fan in spiral case all flows the air from corresponding air intake.
In known manner, the spiral case of air inlet shell is had and is started with spiral case nose and evolve to air outlet slit
Profile, one or more annealing device pneumatic communications of the air outlet slit usually with heating, ventilation and/or air-conditioning device.From sky
By spiral case, then pass through one or more annealing devices is discharged to vehicle to the air that gas inlet housing comes out first
Passenger compartment.More specifically, air inlet shell has lasso, formation enters for any one air from air inlet shell
The air inlet of at least one air stream of mouth, the air inlet and the seat pneumatic communication comprising blast fan.
According to known solution, air inlet shell the lasso and be placed between the blast fan in spiral case
There are spaces.
The implementation of blast fan and motor and/or the air stream as caused by blast fan generate vibration.These vibrations are led
Undesirable noise and vibration are caused, they are traveled in passenger compartment by the structural detail of pipeline and vehicle, thus to vehicle
Occupant cause noise nuisance.
Caused undesirable noise is the function for allowing access into the property of air stream of air inlet shell, that is, is depended on
In the air stream for allowing access into air inlet shell be recirculation air flow or extraneous air stream.Therefore, work as extraneous air stream
The first undesirable noise, and the production when recirculation air flow enters air inlet shell are generated when into air inlet shell
Raw second undesirable noise.
It is worth noting that, the first undesirable noise occurred in outside air supply model may be than recycling
The undesirable noise of second occurred in air supply model is bigger.This is because forming the air of the air inlet for air stream
There are caused by space between the lasso and blast fan of inlet housing, radial discharge is emptied with what is flowed towards air outlet slit
Air-flow tends to leak through the blast fan, is flowed back to by blast fan, rather than is drawn towards the air outlet slit of air inlet shell
It leads.In fact, the air blower pressure to be overcome is lower than outside air due to the back pressure in recirculation air flow circuit.
Therefore, especially when heating, ventilation and/or air-conditioning device are from using the supply for being derived from the recirculation air of passenger compartment
Acoustic difference multiplying for vehicle when pattern switching is to outside air supply model, between the first and second undesirable noises
It is perceptible for member, and this may result in discomfort.
Known solution is related at the air inlet of air inlet shell air inlet shell being equipped with acoustics mask
Or barrier, air stream are inhaled by the air inlet of air inlet shell.However, the solution reduces air inlet shell
Air inlet and increase pressure drop.
Summary of the invention
Therefore, the present invention is directed to especially be used for ventilation, the heating of motor vehicles by proposing a kind of air inlet shell
And/or air-conditioning device, at least partly overcome these problems in the prior art, is intended to reduce by being placed in air intake shell
The operation of intracorporal blast fan and the undesirable noise generated.
Another object of the present invention be propose it is a kind of including this air inlet shell for motor vehicles heating,
Ventilation and/or air-conditioning device.
For this purpose, the present invention relates to a kind of air inlet shells, it to be especially used for motor vehicles heating, ventilation and/or air-conditioning
Device, comprising:
At least one air intake,
At least one air outlet slit, and
Spiral case is designed to accommodate the impeller of motorized fan unit, and the Impeller Design is at sucking from air intake
Air stream, and there is the profile for starting and evolving to air outlet slit with spiral case nose.
According to the present invention,
The air inlet shell further includes at least one deflector, at least one described deflector prolongs from spiral case nose
The wall of spiral case is stretched, and
The deflector has conical by its shape.
This deflector prevents from being sucked by blast fan and then being discharged to flow to the air stream of air outlet slit and flow back into wind
In Vane wheel.In addition, the arrangement of deflector will not generate any additional pressure drop.
Air inlet shell also can have one of following characteristics, use alone or in combination:
Deflector is at least partly substantially curved, and deflector preferably has substantially hyperbolic shape,
The height of deflector reduces from spiral case nose,
The maximum height of deflector is about 15mm to 25mm,
Deflector includes
First side extends the first side wall for being intended to be arranged to the spiral case towards the impeller,
Second side extends from the second sidewall for the spiral case for limiting air outlet slit, and
Link the joint face of the first and second sides,
Spiral case restriction is substantially spiral-shaped since spiral case nose, and the first side of deflector has restriction
Extend the top edge of spiral-shaped semicircle,
- the first and second sides are respectively provided with substantially curved lower edge, such as with substantially hyperbolic shape,
Joint face is substantially curved, such as substantially hyp,
Second side is upwardly extended in the side that the direction with first side intersects,
The width of joint face reduces from spiral case nose, such as joint face is configured to end at a bit,
Deflector is made of the single component with air inlet shell or deflector is attached to air intake shell
The component of the spiral case of body,
Deflector extends in length in the range of 40mm to 60mm.
The invention further relates to a kind of heating, ventilations and/or air-conditioning device for motor vehicles, which is characterized in that it is wrapped
Include at least one air inlet shell as described above and motorized fan unit comprising impeller, impeller are placed in air intake
In the spiral case of shell and it is designed to suck the air stream of the air intake from air inlet shell.
The heating, ventilation and/or air-conditioning device can also include one of following characteristics, use either individually or in combination:
Air inlet shell has lasso, and the lasso forms the air inlet of the air stream for being sucked by the impeller,
The impeller has multiple blades, and the multiple blade links at one end through connection strap,
The height of deflector reduces between lasso and connection strap, from the maximum height at least partly covering connection strap
Minimum constructive height is reduced to,
At its maximum height, deflector at least covers the half of connection strap height,
The impeller has closure wall, such as the wall of substantially bowl-type,
The blade of the impeller basically bowl-shaped portion periphery edge expose,
Connection strap is arranged in the opposite side of closure wall.
Detailed description of the invention
The description provided below by way of non-limiting example and attached drawing is read, other features and advantages of the present invention will become
It is clearer, in which:
- Fig. 1 is the perspective view of the air inlet shell according to the present invention comprising blast fan,
- Fig. 2 a is the cross-sectional view of the air inlet shell in Fig. 1, and it includes blast fans, is also schematically shown
Air baffle,
- Fig. 2 b is the signal enlarged drawing of the deflector of the air inlet shell in Fig. 2 a,
- Fig. 3 is bottom, cross-sectional view, the spiral case of the air inlet shell in Fig. 1 to Fig. 2 b is shown, equipped with water conservancy diversion
Plate,
- Fig. 4 a is the first perspective view, shows the deflector for extending spiral case wall,
- Fig. 4 b is the second perspective view, shows the deflector for extending spiral case wall,
- Fig. 5 is another schematic diagram, shows the deflector for being arranged to extend the spiral case comprising blast fan, and
- Fig. 6 is the sound level and peace for comparing the operation blast fan being mounted in air inlet shell according to prior art
The curve graph of the sound level of operation blast fan in air inlet shell according to the present invention.
In these figures, make that identical element is presented with like reference characters.
Specific embodiment
Following embodiment is example.Although description is related to one or more embodiments, this does not necessarily mean that each
With reference to referring to that identical embodiment or feature be only applicable to one embodiment.It can also combine or exchange different embodiments
Each feature to provide other embodiments.
Certain elements in specification can be numbered, such as the first wall and the second wall or the first face and the second face.This
In the case of, which is only used for distinguishing and identifying similar but different element.The number is not meant to an element priority
In another element, because of the range that such description can be exchanged simply without therefore exceeding this specification.
Fig. 1 is mounted in the schematic diagram of a part of heating, ventilation and/or air-conditioning device on motor vehicles comprising
Air inlet shell 1 and motorized fan unit 3, also referred to as air blower, as shown in part in Fig. 1 and 2 a.Therefore, air intake shell
Body 1 is designed to comprising motorized fan unit 3.
Component including air inlet shell 1 and relevant motorized fan unit 3 can also be formed heating, ventilation and/or
The air propulsion device of air-conditioning device.
Motorized fan unit 3 is designed to mount in air inlet shell 1 to cause air to flow.This can be from passenger
The extraneous air stream of cabin external suction or the air stream aspirated from interior passenger compartment, referred to as recycling or recycled air stream, or
The even mixing of extraneous air stream and recirculation air flow.In operation, the motorized fan being mounted in air inlet shell 1
Unit 3 directs air flow to the pipeline (not shown) of heating, ventilation and/or air-conditioning device, which arrives air flow distribution
Outlet (not shown) enters the passenger compartment of vehicle.
For this purpose, motorized fan unit 3 has motor 5 and impeller 7, impeller 7 is also referred to as blast fan or blower wheel,
It is designed to drive the movement to ensure air stream by motor 5.Motor 5 is designed to driving fan impeller 7 around rotation axis A
Rotation.
Blast fan 7 is generally substantial cylindrical, has opening face.Blast fan 7, which has, limits blast fan 7
The last week of the edge 8 in the opening face.Blast fan 7 is designed to that, by opening face sucking air stream, arrow F1 as shown in figure 1 illustrates
Shown in property, the air stream is then discharged by side, i.e., radially with respect to rotation axis A, the schematic institute of arrow F2 as shown in figure 1
Show.
Embodiment according to figure 1, blast fan 7 also have closure wall or the part at the rear portion for forming blast fan 7
9, the wall is for example substantially bowl-type.The part 9 is hereinafter referred to as bowl 9.Bowl 9 is substantially protrusion,
It is raised towards the inside of blast fan 7.Bowl 9 is arranged to opposite with the opening face of blast fan 7 and therefore and upper periphery
Edge 8 is opposite.
Blast fan 7 also has wheel hub 11, which is arranged substantially at the center of bowl 9 in this case
Place is designed to receive the free end of the transmission shaft of motor 5, as shown schematically in Fig. 2 a, so as to mechanically by blast fan 7
It is connected to motor 5.
Blast fan 7 can have multiple blades 13 or fin.In this case, blade 13 is being arranged essentially parallel to rotation
Extend on the direction of axis A from the periphery of bowl 9.Therefore, these blades 13 expose from the periphery edge of bowl 9.Change sentence
It talks about, according to embodiment shown in Fig. 1 and 2 a, the periphery edge that blade 13 is longitudinally away from bowl 9 extends.In addition, with
The opposite side of bowl 9, blade 13 are attached in its free end by connection strap 15.Connection strap 15 is therefore in blast fan
On 7 opening face and the side of upper peripheral edge 8.
It is described in more detail below air inlet shell 1.
Air inlet shell 1 has at least one air intake (not shown), in particular at least one outside air inlet
(not shown) allows extraneous air stream (also referred to as fresh air) to enter air inlet shell 1 outside passenger compartment.In modification
Or in supplement, this can be recycling or recircilated air intake, and recirculation air flow is allowed to enter air intake from passenger compartment
Shell 1.
As shown in Figure 1, air cabinet 1 has spiral case 17, motorized fan unit 3 is designed to mount in spiral case 17, to draw
Lead the air stream generated by motorized fan unit 3.
In this example, spiral case 17 is substantially spiral.The profile of spiral case 17 is in the area for being known as " spiral case nose " 19
Start in domain.Spiral case nose 19 can also be defined as towards or penetrate the region of the inner space of air inlet shell 1.Spiral case 17
The spiral-shaped air outlet slit 21 that air inlet shell 1 is evolved to from spiral case nose 19.
In other words, spiral case 17, which has, follows spiral-shaped the first side wall 18, since spiral case nose 19 and leads to
It crosses and defines air outlet slit 21 and terminate.This is the inner wall 18 of spiral case 17, i.e., on the side of the internal capacity limited by spiral case 17.
Spiral case 17 also have second sidewall 20, be located on the other side of spiral case nose 19 relative to the first side wall 18 and
It cooperates with the end of the first side wall 18 and defines air outlet slit 21.
In the example shown, element 22, such as annealing device, especially heat exchanger can be arranged in air and go out
At mouth 21.
In order to accommodate blast fan 7, spiral case 17 defines that seat 23, blast fan 7 can dispose in present 23.The seat 23
Such as centered on rotation axis A.When blast fan is placed in spiral case 17, the first side wall 18 of spiral case 17 limits the seat 23 simultaneously
Therefore towards blast fan 7.
In addition, air inlet shell 1 has air inlet 25, which can be realized seat 23 and air inlet shell 1
One or more air intake (not shown), such as the pneumatic communication between outside air or recirculation air entrance.
Blast fan 7 is designed in placement present 23, so that in this example, bowl 9 is located at opposite with air inlet 25
Side, the connection strap 15 in the opening face of blast fan 7, especially connection blade 13 is located at the side of air inlet 25.Therefore, empty
Gas inlet housing 1 has open air inlet face.When the blast fan 7 being placed in spiral case 17 is driven to rotate, via air inlet
Face is to suck via air inlet 25 and the air stream that is recycled by blast fan 7 is for example, by being connected to heating, ventilation and/or air-conditioning
The air outlet slit 21 of the pipeline (not shown) of device and aspirated from air inlet shell 1.
The face of the air inlet shell 1 opposite with including the air inlet face of air inlet 25 is usually by the electricity of motorized fan unit 3
Motivation supporting element is closed.
In addition, air inlet shell 1 can have the lasso 27 for limiting air inlet 25.In addition, in the last week of blast fan 7
Usually there is space between side edge 8 and the lasso 27 of air inlet shell 1, as schematically shown in Fig. 2 a.
Air inlet shell 1 also has at least one deflector 29, schematically shows in Fig. 2 a and 2b, and scheming
It is significantly more shown in 3 to 5.
Deflector 29 is arranged to deviate air stream to direct it towards air outlet slit 21.More specifically, due to lasso 27 and leaf
Space between the upper peripheral edge of wheel 8, deflector 29 are arranged to the air stream for preventing from being sucked by blast fan 7 and being radially discharged
Flow back into blast fan 7.
For this purpose, deflector 29 is placed close to spiral case nose 19.More specifically, deflector 29 extends at spiral case nose 19
Or from its extension, extend the wall of spiral case 17.With reference to Fig. 1, when the impeller is arranged in spiral case 17, deflector 29 extends spiral case
17 the first side wall 18 is the wall tangent with blast fan 7.
More specifically, deflector 29 has the shape of evolution according to the embodiment.In other words, the shape of deflector 29
Shape evolution or variation between spiral case nose 19 and one end 31 opposite with spiral case nose 19 of deflector 29.Therefore, deflector
29 shape is not constant.
With one or more suddenly changes in shape on the contrary, the evolution of the shape of deflector 29 be, for example, it is gentle gradually
Into.Evolution is, for example, that the size of deflector 29 reduces.Preferably, deflector 29 has conical by its shape, such as pointed shape, especially
It is there is widest portion at spiral case nose 19, and there is most narrow or most nose part at the end of deflector 29 31.
Particularly, the width of deflector 29 reduces between spiral case nose 19 and end 31.
In addition, the exemplary embodiment according to shown in, the height h of deflector 29 reduces from spiral case nose 19.In other words,
Deflector 29 has minimum high with maximum height at spiral case nose 19 and at its end 31 opposite with spiral case nose 19
Degree.
Specific example shown in a according to fig. 2, deflector 29 extend between lasso 27 and connection strap 15.In deflector
In the case that 29 are in maximum height, deflector 29 at least partly covers connection strap 15, preferably at least the one of connection strap 15
Half height.As non-limiting example, maximum height is about 15mm to 25mm.Therefore, deflector 29 extends a small distance simultaneously
And the blade 13 of blast fan 7 will not be hidden.Therefore, deflector 29, which is not constituted, interferes blast fan 7 correctly to suck and be discharged
The barrier of air stream.
In addition, it is contemplated that the arrangement of the element in Fig. 2 a, deflector 29 is arranged only in the top of spiral case 17.
In addition, with reference to Fig. 2 b and 3, deflector 29 extends long enough on length l, so as to effectively deviate fan leaf
The air stream that wheel 7 sucks again, without interfering circulation of the air stream towards air outlet slit 21.Advantageously, deflector 29 is in 40mm
Extend on length l in the range of to 60mm.
In addition, deflector 29 is at least partly substantially curved, and preferably there is substantially hyp shape
Shape.
Preferably, the shape of deflector 29 is designed to continue the spiral-shaped song of spiral case 17 on the side towards seat 23
Line, it is described to flank Vane wheel 7 of calling prisoners in after letting them out for exercise, it is referred to alternatively as the inside of deflector 29.In opposite side, (it is referred to alternatively as deflector 29
Outside) on, the shape of deflector 29 is advantageously designed to guidance air stream towards air outlet slit 21.
Particularly, with reference to Fig. 3,4a and 4b and according to illustrated embodiment, deflector 29 includes:
First side 291, extend spiral case 17 towards seat 23 and be accordingly used in the first side wall towards blast fan 7
18,
Second side 292 extends from the second sidewall 20 for the spiral case 17 for limiting air outlet slit 21, and
Link the joint face 293 of first side 291 and second side 292.
First side 291 has top edge 291a and lower edge 291b.Similarly, second side 292 has top edge
292a and lower edge 292b.With reference to the arrangement of the element as shown in Fig. 1,2a and 5, used here as term " on " and "lower".First
It is located on lasso 27 with the top edge 291a and 292b of second side 291 and 292.First and second sides 291 and 292 it is following
Edge 291a and 292b are located at the side opposite with lasso 27.
In addition, limiting the substantially spiral-shaped embodiment, the top edge 291a of first side 291 according to spiral case 17
(Fig. 4 a), which is defined, extends spiral-shaped semicircle.Therefore, the top edge 291a of first side 291 is curved.
In addition, the lower edge 291b of first side 291 is substantially curved, and for example with substantially hyperbola
Shape.The lower edge 291b and joint face 293 of first side 291 link.
Second side 292 (Fig. 4 b) is arranged to the second sidewall 20 of connection spiral case 17, at the end of deflector 29 31
Limit air outlet slit 21.
More specifically, the exemplary embodiment according to shown in, first side 291 extends in the direction of extension, in this feelings
It is substantially round under condition, and second side 292 is upwardly extended in the side that the extending direction with first side 291 intersects.Cause
This in this example, the top edge 292a of second side 292 extends along which half in the top edge 291a with first side 291
The side that circle intersects upwardly extends.
Similar to first side 291, the lower edge 292b of second side 292 is also substantially curved, and for example has
There is substantially hyperbolic shape.The lower edge 292b of second side 292 also links with joint face 293.
Therefore, according to illustrated embodiment, link the connection of the inner side and outer side side 291 and 292 Ji Liangge of deflector 29
The side edge in face 293 is substantially hyp.In general, therefore joint face 293 has substantially hyperbolic shape.
In addition, the width of joint face 293 shown in Fig. 3 to Fig. 4 b reduces from spiral case nose 19.In other words, joint face
293 have the shape for ending at a bit.The point is the end 31 of deflector 29.In addition, deflector 29 can be with air intake shell
Single component is made in body 1, or in modification, can be attached to the component of spiral case 17, such as by overmolded.
Finally, the interference during blast fan 7 is run to air stream in order to prevent, enters when the impeller is placed in air
When in the seat 23 of mouth shell 1, deflector 29 is advantageously arranged in the distance of the about 3mm to 4mm of the outer peripheral edge away from blast fan 7
Place.
As described above, have evolution shape, more specifically conical by its shape and be arranged to extend spiral case nose 19 sky
Conductance flowing plate 29 prevents from blowing to the recycling of the air stream of blast fan 7, to reduce and use heating, ventilation and/or air-conditioning
The related undesirable noise of device.
This is modeled by the curve graph in Fig. 6, and this graph illustrate for giving air velocity as caused by blast fan 7
The blast fan 7 being placed in the air inlet shell 1 with and without deflector 29 according to the present invention the operation phase
Between the acoustic measurement of noise that generates.Therefore, curve graph 6 show in Y-axis be with decibel dB (A) unit noise level
Variation, as in X-axis with hertz (Hz) be unit sound frequency function.More specifically, to be related to the mankind audible for curve graph 6
The acoustic measurement of frequency in range, i.e., from 20Hz to 20kHz.
In the curve graph of Fig. 6, complete curve C1 is not using acoustic measurement of the invention, and dashed curve C2 is using this
The acoustic measurement of invention.
As shown, the present invention leads to the acoustics gain in 80Hz to 200Hz frequency band, the i.e. reduction of noise level.It is real
On border, in this band, in the operation for being placed in the blast fan 7 in the spiral case 17 with deflector 29 according to the present invention
The noise level (curve C2) of perception is less than in the spiral case according to prior art 17 for being placed in no this deflector 29
The noise level (curve C1) perceived during the operation of blast fan 7.The acoustics gain can be greater than 10dB (A), such as
Frequency close to 100Hz is likely to be breached 12dB (A).This decline helps to reduce the acoustics discomfort that human ear is felt.
In addition, present inventor have determined that aerodynamic loss of the invention is reduced close to 75%.In fact, in the prior art
In solution, use without the deflector 29 with evolution shape but at air inlet include acoustics mask spiral case 17,
The volume of aerodynamic loss can reach 20m3/h.On the contrary, wherein spiral case 17 has using air inlet shell 1 according to the present invention
The air baffle 29 with evolution shape arranged as described above, the volume of aerodynamic loss drop to 5m3/h。
Therefore, with solution in the prior art (spiral case comprising blast fan do not have such deflector 29) phase
Than by limiting the recycling of air stream, according to the present invention gradual or evolved air baffle 29 reduces and uses
Heating, ventilation and/or the related aerodynamic loss of air-conditioning device and undesirable noise.
Therefore deflector 29 forms bend (chicane), which offsets the lasso that air stream passes through air inlet shell 1
The trend that space between 27 and the upper peripheral edge 8 of blast fan 7 is flowed back to.
In addition, its conical by its shape is not invasive, therefore any additional aerodynamic loss will not be generated.Particularly, even
The hyperbolic shape for tying the joint face 293 of two sides 291 and 292 of deflector 29 is a kind of acoustics compromise, it is invasive compared with
It is small and have the smallest aerodynamic loss, simultaneously effective reduce the undesirable noise generated by blast fan 7.
Claims (12)
1. a kind of air inlet shell (1) is especially used for motor vehicles heating, ventilation and/or air-conditioning device, comprising:
At least one air intake,
At least one air outlet slit (21), and
Spiral case (17):
It is designed to accommodate the impeller (7) of motorized fan unit (3), the impeller (7) is designed to suck from air intake
Air stream, and
With starting and evolve to the profiles of air outlet slit (21) with spiral case nose (19),
It is characterized by:
The air inlet shell (1) also have at least one deflector (29), at least one described deflector (29) from
Spiral case nose (19) extends the wall (18) of spiral case (17), and
The deflector (29) has conical by its shape.
2. air inlet shell (1) as described in claim 1, wherein the deflector (29) is at least partly substantially
It is curved, and the deflector (29) preferably has substantially hyperbolic shape.
3. air inlet shell (1) as described in any one of the preceding claims, wherein the height of the deflector (29) from
The spiral case nose (19) reduces.
4. air inlet shell (1) as described in any one of the preceding claims, wherein the deflector (29) includes
First side (291) extends the first side wall (18) for being intended to be arranged to the spiral case (17) towards the impeller (7),
Second side (292) extends from the second sidewall (20) for the spiral case (17) for limiting air outlet slit (21), and
Link the joint face (293) of first side (291) and second side (292).
5. air inlet shell (1) as claimed in claim 4, wherein the spiral case (17) limits and opens from spiral case nose (19)
What is begun is substantially spiral-shaped, and wherein, and it is spiral-shaped that there is the first side (291) of the deflector (29) restriction to extend
Semicircle top edge (291a).
6. the air inlet shell (1) as described in any one of claim 4 or 5, wherein first and second side
(291,292) are respectively provided with substantially curved lower edge (291b, 292b), such as with substantially hyperbolic shape.
7. the air inlet shell (1) as described in any one of claim 4 to 6, wherein the second side (292) with
The side that the extending direction of the first side (291) intersects upwardly extends.
8. air inlet shell (1) as claimed in claim 7, wherein the width of the joint face (293) is from spiral case nose
(19) reduce, such as joint face (293) is configured to end at a bit.
9. air inlet shell (1) as described in any one of the preceding claims, wherein the deflector (29) is free by band
The single component of gas inlet housing (1) is made or the deflector (29) is attached to the spiral case of air inlet shell (1)
(17) component.
10. air inlet shell (1) as described in any one of the preceding claims, wherein the deflector (29) is in 40mm
Extend in length (l) in the range of to 60mm.
11. a kind of heating, ventilation and/or air-conditioning device for motor vehicles, which is characterized in that it includes at least one as before
State air inlet shell described in any one of claim (1) and motorized fan unit (3), the motorized fan unit (3)
Including impeller (7), the impeller (7) is placed in the spiral case (17) of air inlet shell (1) and is designed to sucking from sky
The air stream of the air intake of gas inlet housing (1).
12. heating, ventilation as claimed in claim 11 and/or air-conditioning device, in which:
The air inlet shell (1) has lasso (27), and the lasso (27) is formed for being sucked by the impeller (7)
The air inlet (25) of air stream, wherein
The impeller (7) has multiple blades (13), and the multiple blade (13) links at one end through connection strap (15), and
And wherein,
The height of the deflector (29) reduces between lasso (27) and connection strap (15), from least partly covering connection
The maximum height of item (15) is reduced to minimum constructive height, and the maximum height is preferably at least the one of the height of connection strap (15)
Half.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1658718A FR3056287B1 (en) | 2016-09-19 | 2016-09-19 | AIR INTAKE HOUSING AND HEATING, VENTILATION AND / OR AIR CONDITIONING INSTALLATION FOR A CORRESPONDING MOTOR VEHICLE |
| FR1658718 | 2016-09-19 | ||
| PCT/FR2017/052438 WO2018051015A1 (en) | 2016-09-19 | 2017-09-13 | Air inlet housing and corresponding motor vehicle heating, ventilation and/or air-conditioning installation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109790851A true CN109790851A (en) | 2019-05-21 |
Family
ID=57190190
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201780056326.8A Pending CN109790851A (en) | 2016-09-19 | 2017-09-13 | Air inlet shell and corresponding motor vehicles heating, ventilation and/or air-conditioning device |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP3516239A1 (en) |
| JP (1) | JP2019529226A (en) |
| CN (1) | CN109790851A (en) |
| FR (1) | FR3056287B1 (en) |
| WO (1) | WO2018051015A1 (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4313617C1 (en) * | 1993-04-26 | 1994-05-11 | Kreis Truma Geraetebau | Radial blower giving low noise level - has spiral housing which on housing tongue extending its cover starts with edge at its free end, which determines outlet aperture of housing with end area of housing cover |
| JPH07217598A (en) * | 1994-01-31 | 1995-08-15 | Matsushita Electric Works Ltd | Multiblade fan and hair drier using the fan |
| US6039532A (en) * | 1996-07-18 | 2000-03-21 | Iowa State University Research Foundation, Inc. | Blower fan blade passage rate noise control scheme |
| US6463230B1 (en) * | 2001-08-20 | 2002-10-08 | Xerox Corporation | Office machine including a blower having a blower noise reducing device |
| CN204003618U (en) * | 2014-08-20 | 2014-12-10 | 保山昌宁红茶业集团有限公司 | The noise reducing casing assembly of centrifugal blower |
| WO2015064272A1 (en) * | 2013-10-31 | 2015-05-07 | 株式会社Ihi | Centrifugal compressor and supercharger |
| EP2944826A3 (en) * | 2014-05-16 | 2016-01-13 | Regal Beloit America, Inc. | Centrifugal blower housing having surface structures, system, and method of assembly |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE319721C (en) * | 1920-03-15 | Ludwig Hartwagner | Centrifugal fan with worm housing | |
| JPH0893695A (en) * | 1994-09-22 | 1996-04-09 | Daikin Ind Ltd | Fan casing |
| JP3512870B2 (en) * | 1994-11-14 | 2004-03-31 | 東芝キヤリア株式会社 | Centrifugal blower |
| KR100420518B1 (en) * | 2001-08-28 | 2004-03-02 | 엘지전자 주식회사 | A fan housing |
| FR2875560B1 (en) * | 2004-09-23 | 2006-12-01 | Renault Sas | REDUCED NOISE CENTRIFUGAL FAN FOR A VENTILATION SYSTEM OF A MOTOR VEHICLE |
| DE102008051362A1 (en) * | 2008-10-15 | 2010-04-22 | Behr Gmbh & Co. Kg | Radial blower housing |
| JP6494022B2 (en) * | 2014-04-25 | 2019-04-03 | サンデンホールディングス株式会社 | Blower |
-
2016
- 2016-09-19 FR FR1658718A patent/FR3056287B1/en not_active Expired - Fee Related
-
2017
- 2017-09-13 CN CN201780056326.8A patent/CN109790851A/en active Pending
- 2017-09-13 JP JP2019515342A patent/JP2019529226A/en active Pending
- 2017-09-13 EP EP17780804.5A patent/EP3516239A1/en not_active Withdrawn
- 2017-09-13 WO PCT/FR2017/052438 patent/WO2018051015A1/en unknown
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4313617C1 (en) * | 1993-04-26 | 1994-05-11 | Kreis Truma Geraetebau | Radial blower giving low noise level - has spiral housing which on housing tongue extending its cover starts with edge at its free end, which determines outlet aperture of housing with end area of housing cover |
| JPH07217598A (en) * | 1994-01-31 | 1995-08-15 | Matsushita Electric Works Ltd | Multiblade fan and hair drier using the fan |
| US6039532A (en) * | 1996-07-18 | 2000-03-21 | Iowa State University Research Foundation, Inc. | Blower fan blade passage rate noise control scheme |
| US6463230B1 (en) * | 2001-08-20 | 2002-10-08 | Xerox Corporation | Office machine including a blower having a blower noise reducing device |
| WO2015064272A1 (en) * | 2013-10-31 | 2015-05-07 | 株式会社Ihi | Centrifugal compressor and supercharger |
| EP2944826A3 (en) * | 2014-05-16 | 2016-01-13 | Regal Beloit America, Inc. | Centrifugal blower housing having surface structures, system, and method of assembly |
| CN204003618U (en) * | 2014-08-20 | 2014-12-10 | 保山昌宁红茶业集团有限公司 | The noise reducing casing assembly of centrifugal blower |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2018051015A1 (en) | 2018-03-22 |
| EP3516239A1 (en) | 2019-07-31 |
| FR3056287A1 (en) | 2018-03-23 |
| JP2019529226A (en) | 2019-10-17 |
| FR3056287B1 (en) | 2019-05-10 |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190521 |