WO2017103358A1 - Intake blower intended for a motor vehicle heating, ventilation and/or air conditioning device, and heating, ventilation and/or air conditioning device - Google Patents

Intake blower intended for a motor vehicle heating, ventilation and/or air conditioning device, and heating, ventilation and/or air conditioning device Download PDF

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Publication number
WO2017103358A1
WO2017103358A1 PCT/FR2016/052932 FR2016052932W WO2017103358A1 WO 2017103358 A1 WO2017103358 A1 WO 2017103358A1 FR 2016052932 W FR2016052932 W FR 2016052932W WO 2017103358 A1 WO2017103358 A1 WO 2017103358A1
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WO
WIPO (PCT)
Prior art keywords
air
flow
turbine
flap
blower
Prior art date
Application number
PCT/FR2016/052932
Other languages
French (fr)
Inventor
Yvan Lechat
Original Assignee
Valeo Systemes Thermiques
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 Valeo Systemes Thermiques filed Critical Valeo Systemes Thermiques
Publication of WO2017103358A1 publication Critical patent/WO2017103358A1/en

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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
    • F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
    • F04D17/08—Centrifugal pumps
    • F04D17/16—Centrifugal pumps for displacing without appreciable compression
    • F04D17/162—Double suction 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
    • B60H1/00007—Combined heating, ventilating, or cooling devices
    • B60H1/00021—Air flow details of HVAC devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
    • F04D27/002—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids by varying geometry within the pumps, e.g. by adjusting vanes
    • 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
    • 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
    • F04D29/424—Double entry casings
    • 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
    • F04D29/70—Suction grids; Strainers; Dust separation; Cleaning
    • F04D29/701—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps
    • F04D29/703—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps specially for fans, e.g. fan guards
    • 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
    • B60H1/00007—Combined heating, ventilating, or cooling devices
    • B60H1/00021—Air flow details of HVAC devices
    • B60H2001/00078—Assembling, manufacturing or layout details
    • B60H2001/00085—Assembling, manufacturing or layout details of air intake

Definitions

  • the present invention relates to a suction blower for a device for heating, ventilation and / or air conditioning of a motor vehicle and the heating, ventilation and / or air conditioning device comprising such a blower.
  • a motor vehicle has a passenger compartment into which the air typically comes from a heating, ventilation and / or air conditioning device.
  • the heating, ventilation and / or air conditioning system also known by its English name HVAC (for Heating, Ventilation and Air-Conditioning) can be supplied with either air outside the vehicle (also called fresh air), or with recirculation air, that is to say from the passenger compartment of the vehicle. It is important to be able to dissociate the air flows (outside air - recirculating air), in particular during the passage of said air flows through the heating, ventilation and / or air conditioning device, according to the needs of the occupants of the room. vehicle, or in other words during the thermal conditioning of the air flows. Indeed, the recycling air is already at a temperature close to the target temperature to reach, it is thus possible to quickly reach the temperature desired by the user.
  • HVAC Heating, Ventilation and Air-Conditioning
  • the recirculation air is more loaded with moisture than the air coming from outside the vehicle, so that if the recirculation air is directed near the windshield via air vents , located in front of the driver or front passenger, for example, or directly on the windshield. Moisture in the recirculated air condenses on the windshield and creates steam.
  • a known solution consists in thermally conditioning the outside air flow and sending it into the passenger compartment near or directly to the windshield, and thermally conditioning the flow of recirculating air and to the send in the cockpit remote from the windshields at the other air vents, such as vents at the feet of the driver or front passenger.
  • Known heating, ventilation and / or air conditioning devices comprise a cylindrical turbine capable of being rotated about its axis, separation means able to delimit a first air circulation channel allowing the flow of a first flow. air passage for passing through a first axial portion of the turbine and a second air flow channel allowing the flow of a second air flow for passing through a second axial portion of the turbine.
  • the separation means comprise a tubular member mounted at a first end of said turbine and defining an internal space forming a portion of the first air flow channel, the second air circulation channel extending to the outside the tubular organ.
  • the suction blower further comprises air intake means comprising a housing covering the first end of the turbine and the tubular member, and comprising air guiding means being adapted to direct a first flow of air. air in the first airflow channel, and to direct a second airflow into the second airflow channel.
  • Such a blower is called “mono-suction" because the air enters the blower on one side of the turbine, namely on the side where is located the housing and the tubular separation member.
  • the aforementioned blower can separate two streams of air, namely the recirculated air flow and the outside air flow.
  • a known solution consists in placing a filter upstream of the suction blower with a set of butterfly flaps and fixed partitions for dissociating the two incoming air flows.
  • such an installation is not well suited for the needs of air filtration.
  • the combination of the butterfly flaps and fixed partitions reduce the flow section of the air flow and This prevents the flow of air from passing through the entire filter surface, thus degrading the quality of the air.
  • the present invention aims to improve the quality of the air by ensuring that the flow of recirculating air is able to pass through the entire filter.
  • the invention proposes a suction blower for a heating, ventilation and / or air-conditioning device for a motor vehicle, the blower comprising a turbine that can be rotated about an axis, suitable separation means delimiting a first air circulation channel allowing the flow of a first air flow intended to pass through a first axial portion of the turbine and a second air circulation channel allowing the flow of a second flow of air for passing through a second axial portion of the turbine, said separating means comprising a tubular member mounted at one end of said turbine and defining an internal space forming at least a part of the first circulation channel of said turbine.
  • said blower further comprises a recirculating air inlet, an outside air inlet and guiding means. an airway adapted to direct a first flow of air into the first airflow channel, and to direct a second airflow into the second airflow channel, and a filter to be traversed by the first and the second air flow.
  • said air guiding means are capable of directing the flow of air entering through the recirculating air inlet over the entire surface of the filter.
  • the air guiding means can direct the flow of recirculation air over the entire surface of the filter.
  • the recirculation air is better filtered improving the quality of the air.
  • the air guiding means are such that they can increase the passage section of the air flow. This allows first of all that the entire filter is passed through the recirculating air stream and then, since the passage section of the recirculation air stream is increased so there is less of the pressure losses allowing a gain of up to 100 Pa.
  • said blower further comprises an additional box covering the first end of the turbine and the tubular member;
  • the air guiding means are included in the additional housing;
  • the air guiding means comprise at least a first and a second drum flap
  • drum flaps are arranged to completely close in one position the flow of air entering through the outside air inlet;
  • the air guiding means further comprises a butterfly flap
  • the second drum flap is arranged centrally in the additional housing, the butterfly flap and the first drum flap being arranged on either side of said second drum flap;
  • the additional housing comprises a fixed partition between the butterfly flap and the second drum flap, the butterfly flap being adapted to close the passage of the air flow between the walls of the additional housing and the fixed partition.
  • the invention also relates to a heating, ventilation and / or air conditioning device comprising a suction blower as described above.
  • FIG. 1 is a schematic view in axial section of a blower according to the invention and illustrates a first mode of operation
  • FIG. 2 is a schematic view in axial section of a blower of a blower according to the invention and illustrates another mode of operation;
  • FIG. 3 is a schematic view in axial section of a blower of a blower according to the invention and illustrates another mode of operation.
  • a suction blower 1, illustrated in Figure 1 comprises a turbine 2 of generally cylindrical shape, axis A.
  • the turbine has blades 3 at its radially outer periphery and internally defines a cylindrical space.
  • the turbine 2 comprises a first axial portion 5 extending from a first end 7 of the turbine 2 to an axially median zone, and a second axial portion 6 extending from said median zone to a second end 8, opposed to the first end 7 of the turbine 2.
  • a hub 9 is attached to the turbine 2 serving as a deflector for circulating air flows.
  • the hub 9 is in the form of a part of revolution of axis A, whose generator comprises a radially outer zone rounded, concavely or convexly, and which is turned upwards, that is to say in the direction of the end 8 of the turbine 2, the hub 9 further comprising a central zone 1 1 disc-shaped, or dome, perpendicular to the axis A, at which is fixed a rotary shaft of drive 12 of an electric motor 13.
  • the radially outer periphery of the hub 9 has a tangent extending in a radial plane and is fixed to the lower end 7 of the turbine 2.
  • the motor 13 drives in rotation the deflector 9 and the turbine 2.
  • the terms up and down are defined here with reference to the figures and are not limiting.
  • a tubular member 14 for separating the air flows is mounted within the blower and extends in part in the internal space of the turbine 2, from the central zone of the turbine 2 to a point beyond from the end 8.
  • This tubular member 14 has a cylindrical upper part 15 and a lower part 16 flaring downwards.
  • the cylindrical upper part extends between the end 8 and at least one inlet of an air flow, which will be described later, while the lower part 16 extends between the end 8 and the central zone of the turbine 2.
  • the lower portion 16 has a form of revolution of axis A, whose generator is rounded and has its concavity facing upwards.
  • the radially outer periphery of the lower part 16 of the tubular member 14 has a tangent extending in a radial plane.
  • the outer radial periphery of the hub 9 may be greater than or equal to the radial periphery of the blades 3 of the turbine 2, while the radial periphery of the lower part 16 is smaller than the radial periphery of the blades 3 of the turbine 2, so as not to hinder the rotation of the blades 3.
  • the housing 17 further comprises a wall annular separation 20 for defining the two channels 18, 19.
  • the tubular member 14 is fixed relative to the volute 17.
  • the volute 17 comprises an upper opening 22 for the passage of at least one air flow within of the blower 1 and the passage of the tubular member 14. Thus, the air flow can flow within the tubular member 14 and in the side passages between the outer surface of the tubular member 14 and the edge of the upper opening 22 of the volute 17.
  • the blower 1 further comprises an additional air inlet box 21, fixed above the upper opening 22 of the volute 17.
  • the additional box 21 delimits an internal space 23 so as to allow the entry of air. air in the tubular member 14 and / or in the turbine 2 via the upper opening 22.
  • the additional housing 21 comprises two air inlets 24, 26 for the flow of a recirculating air flow FR and d. an outside airflow FE within the blower. As illustrated in FIG. 1, the recirculating air inlet 24 corresponds to an orifice for the recirculating air flow FR whereas the external air inlet 26 corresponds to an orifice for the recirculation flow. outside air FE.
  • the additional box 21 further comprises air guiding means 28, 30, 31, 32, 33.
  • the air guiding means comprise here, a first flap drum 28, a second drum flap 30, a butterfly flap, or flag, 31, a fixed partition 32 and a fixed stop 33.
  • the first drum flap 28 is arranged at the outside air inlet 26 and more particularly at immediate proximity of the wall of the additional housing 21.
  • the second drum flap 30 is arranged between the recycling air inlet 24 and the inlet 26.
  • the butterfly flap 31 and the fixed partition 32 are arranged at the recycling air inlet 24 and more particularly in the immediate vicinity of the wall of the additional housing 21.
  • the second drum flap 30 is arranged centrally within the additional housing 21, with said butterfly flap 31 and the first drum flap 28 being located on either side of said second drum flap 30, located at center of the additional box 21.
  • the first drum flap 28 is able to partially close off the outside air inlet 26, and the combination of the first and second drum flaps 28, 30 allows the external air inlet 26 to be completely sealed as illustrated in FIG. figure 1 .
  • a fixed stop 33 arranged between the two drum flaps 28, 30 so that said drum flaps end their stroke against the fixed stop 33.
  • the butterfly flap 31 and the fixed partition. 32 which partially block the recirculation air inlet 24, and the combination of the butterfly flap 31, the fixed partition 32 and the second drum flap 30 completely closes the recirculation air inlet 24 as shown in FIG. Figure 2.
  • the fixed partition 32 is located between the butterfly flap 31 and the second central drum flap 30 so that said two flaps 30, 31 terminate their stroke abutting against the fixed partition 32.
  • the butterfly flap 31 is fit closing the passage of the recirculating air flow FR between the additional box 21 and the fixed partition 32.
  • the first drum flap 28 therefore has a stroke between two extreme positions, a first extreme position called “close” position, illustrated in Figure 1, where the drum flap 28 abuts against the wall of the additional housing 21, and a second extreme position called “open” position, illustrated in Figures 2 and 3, wherein the first drum flap 28 abuts against the wall of the fixed stop 33.
  • the first drum flap 28 comprises a wall 36 allowing the flow or drying of the flow of water. outside air FE, this wall 36 has two ends 38 and 39.
  • the first end 38 When the first drum flap 28 is in the "open" position, the first end 38 abuts against the fixed stop 33, the second end 39 may be awake. ntually abut against the filter 35.
  • the butted fixed 33 alone allows to maintain the first drum flap 28 in each end position.
  • the fixed stop 33 has a rounded edge, or curved, adapted to block the rotation of the first drum flap 28 for each end position without preventing the rotation of the drum flap 28 to move from one extreme position to the other .
  • the second drum flap 30 also has a stroke between two extreme positions, a first extreme position, illustrated in FIGS. 1 and 3, wherein said shutter partially closes the outside air inlet 26, the drum flap 30 abuts against the stop fixed 33, and a second extreme position, illustrated in Figure 2, wherein said shutter partially closes the recirculation air inlet 24, the drum flap 30 abuts against the fixed partition 32.
  • the additional box 21 further comprises a filter 35.
  • the filter 35 is mounted in the additional box 21 and occupies the entire surface of the air passage opening in view of the its position in the suction blower 1. Such a filter 35 can be easily removed, by opening or removing the additional housing 21 accessible for example from the glove box of the vehicle.
  • the filter 35 is mounted axially between the air inlets 24, 26 and the upper end of the tubular member 14 located in the lower part of the additional housing 21.
  • FIG. 1 illustrates a first mode of operation, in this mode of operation, called 100% recycling, only the recirculation air is sucked into the blower, so as to supply the heating, ventilation and / or air conditioning device with recirculation air.
  • a mode of operation can for example be used in case of air conditioning (for example in summer). Indeed, in such a case, the humidity in the air of the passenger compartment tends to condense during its passage through the evaporator for cooling the air. This recycling air is therefore not or little loaded with moisture and can be sent into the passenger compartment near the windshield.
  • the two drum flaps 28, 30 are in the so-called "closed” position for the outside air inlet 26, the latter being closed so that the outside air flow FE can not flow to the outside. within the blower 1.
  • said drum flaps 28, 30 terminate their respective stroke so as to abut against the fixed stop 33 to allow tight sealing of the outside air inlet 26.
  • the butterfly flaps 31 and drum 30 are in the so-called "open” position for the recycling air inlet 24, the latter being open so that the flow of recirculating air FR can flow within the blower 1.
  • the recycling air flow FR corresponding to the air taken from the passenger compartment, thus enters through the recirculating air inlet 24, passes through the filter 35 and the tubular member 14, the lower part 5 of the turbine 2, and enters the channel 18.
  • the recirculation air flow FR enters via the lateral passages located between the external surface of the tubular member 14 and the edge of the upper opening 22 of the volute 17 , the upper part 6 of the turbine 2 and enters the channel 19.
  • the recirculating air flow FR is directed by the corresponding surfaces of the deflector 9 and the tubular member 14 opposite the low axial portion 5 of the turbine 2. After passing through the blades 3 of the turbine 2 this air flow enters the channel 18, the latter opening into the passenger compartment of the vehicle away from the windshield. At the same time, the recirculating air flow FR is also sent outside the tubular member 14. This air flow is directed by the corresponding surface of the tubular member 14 opposite the high axial portion 6 of the tubular member 14. the turbine 2. After passing through the blades 3 of the turbine 2, this air flow enters the channel 19, the latter opening into the passenger compartment of the vehicle nearby or directly facing the windshield.
  • FIG. 2 illustrates a second mode of operation, in this mode of operation, called 100% fresh, only outside air is sucked into the blower, so as to supply the heating, ventilation and / or air conditioning device with air outside.
  • a mode of operation can for example be used in case of outside air heating (eg in winter or mid-season) while avoiding too much fogging on the windshield.
  • the two drum flaps 28, 30 are in the so-called "open” position for the outside air inlet 26, the latter being open so that the outside air flow FE can flow within the Pulser 1.
  • the butterfly flaps 31 and drum 30 are in the "closed” position for the recirculating air inlet 24, the latter being closed so that the recirculation air flow FR can not pass through the blower 1.
  • Said drum and butterfly flaps 30, 31 terminate their respective stroke abutting against the fixed partition 32 to allow sealing of the recirculation air inlet 24.
  • the external air flow FE also flows, via the outside of the tubular member 14, in the upper part 6 of the turbine 2 and enters the channel 19 the latter opening into the passenger compartment of the vehicle, for example near or directly next to the windshield.
  • Figure 3 illustrates a third mode of operation, in this mode of operation, called 50/50, outside air and recirculation air are sucked into the blower, so as to supply the heating device, ventilation and / or external air conditioning and recycling, the blower 1 to generate two separate air flows.
  • a mode of operation can for example be used in case of air heating (for example in winter or mid-season) and reduces the time required to reach a set temperature, the air temperature taken in the passenger compartment being higher than the temperature of the external air, without too much fog being formed on the windshield.
  • the first drum flap 28 is in the so-called "open” position, while the second drum flap 30 is called “close” position, for the outside air inlet 26 so that the flow of air FE outdoor air can flow into the blower 1.
  • the second drum flap 30 is in the so-called “Open”, while the butterfly flap 31 is in "closed” position, for the recirculation air inlet 24 so that the recirculation air flow FR can also flow into the blower 1.
  • the butterfly flap 31 and the fixed partition 32 directs the recirculating air flow FR towards the inside of the tubular member 14 while the drum flap 28 orients the outside air flow FE towards the outside of the organ tubular 14 as shown in Figure 3.
  • the recycling air flow FR passes through the filter 35 and the tubular member 14, the lower part 5 of the turbine 2, and enters the channel 18, the latter opening into the passenger compartment of the vehicle at a distance from the windshield.
  • the external air flow FE flows via the outside of the tubular member 14 into the upper part 6 of the turbine 2 and enters the channel 19, the latter opening into the passenger compartment of the vehicle in the vicinity or directly facing the windshield.

Abstract

The invention relates to an intake blower (1) for a motor vehicle heating, ventilation and/or air conditioning device, the blower (1) comprising a fan (2) able to be rotationally driven about an axis, separation means (14) able to delimit a first air circulation duct allowing for the flow of a first stream of air (FE, FR) intended to pass through a first axial part (5) of the fan (2), and a second air circulation duct allowing for the flow of a second stream of air (FE, FR) intended to pass through a second axial part (6) of the fan (2), the said separation means (14) comprising a tubular member (14) mounted at the location of a first end (8) of the said fan and delimiting an internal space forming at least part of the first air circulation duct, the second air circulation duct extending on the outside of the tubular component (14), the said blower further comprising a recirculating-air inlet (24), an external-air inlet (26), and air guiding means (28, 30, 31, 32, 33) which are able to direct a first stream of air (FE, FR) into the first air circulation duct and to direct a second stream of air(FE,FR) into the second air circulation duct, a filter (35) intended to have the first and second streams of air (FE, FR) passing through it. According to the invention, the said air guiding means (28, 30, 31, 32, 33) are able to direct the stream of air (FR) entering via the recirculating-air inlet (24) over the entire surface area of the filter (35).

Description

PULSEUR D'ASPIRATION DESTINE A UN DISPOSITIF DE CHAUFFAGE, VENTILATION ET/OU CLIMATISATION D'UN VEHICULE AUTOMOBILE ET DISPOSITIF DE CHAUFFAGE, VENTILATION ET/OU CLIMATISATION Domaine Technique de l'invention  SUCTION PULSER FOR A DEVICE FOR HEATING, VENTILATION AND / OR AIR CONDITIONING OF A MOTOR VEHICLE AND DEVICE FOR HEATING, VENTILATION AND / OR AIR CONDITIONING TECHNICAL FIELD OF THE INVENTION
La présente invention concerne un pulseur d'aspiration destiné à un dispositif de chauffage, ventilation et/ou climatisation d'un véhicule automobile ainsi que le dispositif de chauffage, ventilation et/ou climatisation comportant un tel pulseur. The present invention relates to a suction blower for a device for heating, ventilation and / or air conditioning of a motor vehicle and the heating, ventilation and / or air conditioning device comprising such a blower.
Etat de la technique antérieur State of the prior art
Un véhicule automobile comporte un habitacle dans lequel débouche de l'air issu classiquement d'un dispositif de chauffage, ventilation et/ou climatisation. A motor vehicle has a passenger compartment into which the air typically comes from a heating, ventilation and / or air conditioning device.
Le dispositif de chauffage, ventilation et/ou climatisation, également connu sous sa dénomination anglaise HVAC (pour Heating, Ventilation and Air-Conditioning) peut être alimenté soit en air extérieur au véhicule (également appelé air neuf), soit en air de recyclage, c'est-à-dire issu de l'habitacle du véhicule. Il est important de pouvoir dissocier les flux d'air (air extérieur - air de recyclage), en particulier lors du passage desdits flux d'air au travers du dispositif de chauffage, ventilation et/ou climatisation, en fonction des besoins des occupants du véhicule, ou en d'autres termes lors du conditionnement thermique des flux d'air. En effet, l'air de recyclage étant déjà à une température proche de la température de consigne à atteindre, il est ainsi possible d'atteindre rapidement la température souhaitée par l'utilisateur. Toutefois, l'air de recyclage est plus chargé en humidité que l'air provenant de l'extérieur du véhicule, si bien que si l'air de recyclage est dirigé à proximité du pare-brise par l'intermédiaire de bouches d'aération, situées en avant du conducteur ou du passager avant, par exemple, ou directement sur le pare-brise. L'humidité comprise dans l'air de recyclage se condense sur le pare-brise et crée de la buée. Une solution connue consiste à conditionner thermiquement le flux d'air extérieur et à l'envoyer dans l'habitacle à proximité du pare-brise ou directement sur celui-ci, et à conditionner thermiquement le flux d'air de recyclage et à l'envoyer dans l'habitacle à distance du pare-brise, au niveau des autres bouches d'aération, telles que des sorties de bouches d'aération situées au niveau des pieds du conducteur ou passager avant. The heating, ventilation and / or air conditioning system, also known by its English name HVAC (for Heating, Ventilation and Air-Conditioning) can be supplied with either air outside the vehicle (also called fresh air), or with recirculation air, that is to say from the passenger compartment of the vehicle. It is important to be able to dissociate the air flows (outside air - recirculating air), in particular during the passage of said air flows through the heating, ventilation and / or air conditioning device, according to the needs of the occupants of the room. vehicle, or in other words during the thermal conditioning of the air flows. Indeed, the recycling air is already at a temperature close to the target temperature to reach, it is thus possible to quickly reach the temperature desired by the user. However, the recirculation air is more loaded with moisture than the air coming from outside the vehicle, so that if the recirculation air is directed near the windshield via air vents , located in front of the driver or front passenger, for example, or directly on the windshield. Moisture in the recirculated air condenses on the windshield and creates steam. A known solution consists in thermally conditioning the outside air flow and sending it into the passenger compartment near or directly to the windshield, and thermally conditioning the flow of recirculating air and to the send in the cockpit remote from the windshields at the other air vents, such as vents at the feet of the driver or front passenger.
Des dispositifs de chauffage, ventilation et/ou climatisation connus comportent une turbine cylindrique apte à être entraînée en rotation autour de son axe, des moyens de séparation aptes à délimiter un premier canal de circulation d'air permettant l'écoulement d'un premier flux d'air destiné à traverser une première partie axiale de la turbine et un second canal de circulation d'air permettant l'écoulement d'un second flux d'air destiné à traverser une seconde partie axiale de la turbine. Les moyens de séparation comportent un organe tubulaire monté au niveau d'une première extrémité de ladite turbine et délimitant un espace interne formant une partie du premier canal de circulation d'air, le second canal de circulation d'air s'étendant à l'extérieur de l'organe tubulaire. Le pulseur d'aspiration comporte en outre des moyens d'arrivée d'air comprenant un boîtier recouvrant la première extrémité de la turbine et l'organe tubulaire, et comprenant des moyens de guidage d'air étant aptes à diriger un premier flux d'air dans le premier canal de circulation d'air, et à diriger un second flux d'air dans le second canal de circulation d'air. Known heating, ventilation and / or air conditioning devices comprise a cylindrical turbine capable of being rotated about its axis, separation means able to delimit a first air circulation channel allowing the flow of a first flow. air passage for passing through a first axial portion of the turbine and a second air flow channel allowing the flow of a second air flow for passing through a second axial portion of the turbine. The separation means comprise a tubular member mounted at a first end of said turbine and defining an internal space forming a portion of the first air flow channel, the second air circulation channel extending to the outside the tubular organ. The suction blower further comprises air intake means comprising a housing covering the first end of the turbine and the tubular member, and comprising air guiding means being adapted to direct a first flow of air. air in the first airflow channel, and to direct a second airflow into the second airflow channel.
Un tel pulseur est dénommé « mono-aspiration », car l'air pénètre dans le pulseur d'un seul côté de la turbine, à savoir du côté où est situé le boîtier et l'organe tubulaire de séparation. Le pulseur précité permet de séparer deux flux d'air, à savoir le flux d'air de recyclage et le flux d'air extérieur. Afin d'améliorer la qualité de l'air envoyé vers l'habitacle, il est nécessaire de filtrer les particules présentent dans l'air. Une solution connue consiste à placer un filtre en amont du pulseur d'aspiration avec un ensemble de volets papillons et de cloisons fixes permettant de dissocier les deux flux d'air entrants. Toutefois, une telle installation n'est pas bien adaptée pour les besoins en filtration de l'air. En effet, pour un mode 100 % recyclage où seul le flux d'air de recyclage est aspiré dans les deux canaux de circulation d'air, la combinaison des volets papillons et des cloisons fixes réduisent la section de passage du flux d'air et empêche ainsi le flux d'air de traverser l'intégralité de la surface du filtre dégradant ainsi la qualité de l'air. Such a blower is called "mono-suction" because the air enters the blower on one side of the turbine, namely on the side where is located the housing and the tubular separation member. The aforementioned blower can separate two streams of air, namely the recirculated air flow and the outside air flow. In order to improve the quality of the air sent to the cabin, it is necessary to filter the particles present in the air. A known solution consists in placing a filter upstream of the suction blower with a set of butterfly flaps and fixed partitions for dissociating the two incoming air flows. However, such an installation is not well suited for the needs of air filtration. Indeed, for a 100% recycling mode where only the recirculated air flow is sucked into the two air circulation channels, the combination of the butterfly flaps and fixed partitions reduce the flow section of the air flow and This prevents the flow of air from passing through the entire filter surface, thus degrading the quality of the air.
Exposé de l'invention Presentation of the invention
La présente invention vise à améliorer la qualité de l'air en s'assurant que le flux d'air de recyclage soit apte à traverser l'intégralité du filtre. The present invention aims to improve the quality of the air by ensuring that the flow of recirculating air is able to pass through the entire filter.
Pour cela l'invention propose un pulseur d'aspiration pour un dispositif de chauffage, ventilation et/ou climatisation d'un véhicule automobile, le pulseur comprenant une turbine apte à être entraînée en rotation autour d'un axe, des moyens de séparation aptes à délimiter un premier canal de circulation d'air permettant l'écoulement d'un premier flux d'air destiné à traverser une première partie axiale de la turbine et un second canal de circulation d'air permettant l'écoulement d'un second flux d'air destiné à traverser une seconde partie axiale de la turbine, lesdits moyens de séparation comportant un organe tubulaire monté à l'endroit d'une extrémité de ladite turbine et délimitant un espace interne formant au moins une partie du premier canal de circulation d'air, le second canal de circulation d'air s'étendant à l'extérieur de l'organe tubulaire, ledit pulseur comprend en outre une entrée d'air de recyclage, une entrée d'air extérieur et des moyens de guidage d'air aptes à diriger un premier flux d'air dans le premier canal de circulation d'air, et à diriger un second flux d'air dans le second canal de circulation d'air, et un filtre destiné a être traversé par le premier et le second flux d'air. Selon l'invention lesdits moyens de guidage d'air sont aptes à diriger le flux d'air entrant par l'entrée d'air de recyclage sur l'intégralité de la surface du filtre. For this purpose, the invention proposes a suction blower for a heating, ventilation and / or air-conditioning device for a motor vehicle, the blower comprising a turbine that can be rotated about an axis, suitable separation means delimiting a first air circulation channel allowing the flow of a first air flow intended to pass through a first axial portion of the turbine and a second air circulation channel allowing the flow of a second flow of air for passing through a second axial portion of the turbine, said separating means comprising a tubular member mounted at one end of said turbine and defining an internal space forming at least a part of the first circulation channel of said turbine. air, the second air flow channel extending outside the tubular member, said blower further comprises a recirculating air inlet, an outside air inlet and guiding means. an airway adapted to direct a first flow of air into the first airflow channel, and to direct a second airflow into the second airflow channel, and a filter to be traversed by the first and the second air flow. According to the invention, said air guiding means are capable of directing the flow of air entering through the recirculating air inlet over the entire surface of the filter.
Ainsi les moyens de guidage d'air peuvent diriger le flux d'air de recyclage sur l'intégralité de la surface du filtre. Il en résulte que l'air de recyclage est mieux filtré améliorant ainsi la qualité de l'air. De plus, pour un mode de fonctionnement où seul le flux d'air de recyclage est aspiré dans les deux canaux de circulation, les moyens de guidage d'air sont tels qu'ils peuvent augmenter la section de passage du flux d'air. Ceci permet tout d'abord que l'intégralité du filtre soit traversée par le flux d'air de recyclage puis, étant donné que la section de passage du flux d'air de recyclage est augmentée il y a donc moins de les pertes de charges permettant ainsi un gain allant jusqu'à 100 Pa. Thus, the air guiding means can direct the flow of recirculation air over the entire surface of the filter. As a result, the recirculation air is better filtered improving the quality of the air. In addition, for a mode of operation where only the flow of recirculating air is sucked into the two circulation channels, the air guiding means are such that they can increase the passage section of the air flow. This allows first of all that the entire filter is passed through the recirculating air stream and then, since the passage section of the recirculation air stream is increased so there is less of the pressure losses allowing a gain of up to 100 Pa.
Des modes de réalisations particuliers selon l'invention proposent que : Particular embodiments of the invention propose that:
- ledit pulseur comprend en outre un boîtier additionnel recouvrant la première extrémité de la turbine et l'organe tubulaire ;  said blower further comprises an additional box covering the first end of the turbine and the tubular member;
- les moyens de guidage d'air sont compris dans le boîtier additionnel ;  - The air guiding means are included in the additional housing;
- les moyens de guidage d'air comprennent au moins un premier et un second volet tambour ;  the air guiding means comprise at least a first and a second drum flap;
- lesdits volets tambours sont agencés de manière à obturer intégralement dans une position le flux d'air entrant par l'entré d'air extérieur ;  said drum flaps are arranged to completely close in one position the flow of air entering through the outside air inlet;
- les moyens de guidage d'air comprennent en outre un volet papillon ;  - The air guiding means further comprises a butterfly flap;
- le second volet tambour est agencé de manière centrale dans le boîtier additionnel, le volet papillon et le premier volet tambour étant agencés de part et d'autre dudit second volet tambour ;  - The second drum flap is arranged centrally in the additional housing, the butterfly flap and the first drum flap being arranged on either side of said second drum flap;
- le boîtier additionnel comprend une cloison fixe située entre le volet papillon et le second volet tambour, le volet papillon étant apte à obturer le passage du flux d'air entre les parois du boîtier additionnel et la cloison fixe. L'invention concerne également un dispositif de chauffage, ventilation et/ou climatisation comprenant un pulseur d'aspiration tel que décrit précédemment.  - The additional housing comprises a fixed partition between the butterfly flap and the second drum flap, the butterfly flap being adapted to close the passage of the air flow between the walls of the additional housing and the fixed partition. The invention also relates to a heating, ventilation and / or air conditioning device comprising a suction blower as described above.
Brève description des figures D'autres caractéristiques et avantages de l'invention ressortiront à la lecture de la description qui suit, en référence aux figures annexées, qui illustrent : BRIEF DESCRIPTION OF THE FIGURES Other characteristics and advantages of the invention will emerge on reading the description which follows, with reference to the appended figures, which illustrate:
- La figure 1 est une vue schématique selon une coupe axiale d'un pulseur selon l'invention et illustre un premier mode de fonctionnement ;  - Figure 1 is a schematic view in axial section of a blower according to the invention and illustrates a first mode of operation;
- La figure 2 est une vue schématique selon une coupe axiale d'un pulseur d'un pulseur selon l'invention et illustre un autre mode de fonctionnement ;  - Figure 2 is a schematic view in axial section of a blower of a blower according to the invention and illustrates another mode of operation;
- La figure 3 est une vue schématique selon une coupe axiale d'un pulseur d'un pulseur selon l'invention et illustre un autre mode de fonctionnement. Description détaillée des modes de réalisation - Figure 3 is a schematic view in axial section of a blower of a blower according to the invention and illustrates another mode of operation. Detailed Description of the Embodiments
Un pulseur 1 d'aspiration, illustré à la figure 1 , comporte une turbine 2 de forme générale cylindrique, d'axe A. La turbine comporte des pales 3 à sa périphérie radialement externe et délimite intérieurement un espace cylindrique. La turbine 2 comporte une première partie axiale 5 s'étendant depuis une première extrémité 7 de la turbine 2 jusqu'à une zone axialement médiane, et une seconde partie axiale 6 s'étendant depuis ladite zone médiane jusqu'à une seconde extrémité 8, opposé à la première extrémité 7, de la turbine 2. Un moyeu 9 est fixé à la turbine 2 servant de déflecteur pour les flux d'air circulant. Le moyeu 9 se présente sous la forme d'une pièce de révolution d'axe A, dont la génératrice comporte une zone radialement externe arrondie, de manière concave ou convexe, et qui est tournée vers le haut, c'est-à-dire en direction de l'extrémité 8 de la turbine 2, le moyeu 9 comportant en outre une zone centrale 1 1 en forme de disque, ou de dôme, perpendiculaire à l'axe A, au niveau de laquelle est fixé un arbre rotatif d'entraînement 12 d'un moteur électrique 13. La périphérie radialement externe du moyeu 9 a une tangente s'étendant dans un plan radial et est fixée à l'extrémité basse 7 de la turbine 2. En fonctionnement, le moteur 13 entraîne en rotation le déflecteur 9 et la turbine 2. Les termes haut et bas sont définis ici par référence aux figures et n'ont pas de caractère limitatif. A suction blower 1, illustrated in Figure 1, comprises a turbine 2 of generally cylindrical shape, axis A. The turbine has blades 3 at its radially outer periphery and internally defines a cylindrical space. The turbine 2 comprises a first axial portion 5 extending from a first end 7 of the turbine 2 to an axially median zone, and a second axial portion 6 extending from said median zone to a second end 8, opposed to the first end 7 of the turbine 2. A hub 9 is attached to the turbine 2 serving as a deflector for circulating air flows. The hub 9 is in the form of a part of revolution of axis A, whose generator comprises a radially outer zone rounded, concavely or convexly, and which is turned upwards, that is to say in the direction of the end 8 of the turbine 2, the hub 9 further comprising a central zone 1 1 disc-shaped, or dome, perpendicular to the axis A, at which is fixed a rotary shaft of drive 12 of an electric motor 13. The radially outer periphery of the hub 9 has a tangent extending in a radial plane and is fixed to the lower end 7 of the turbine 2. In operation, the motor 13 drives in rotation the deflector 9 and the turbine 2. The terms up and down are defined here with reference to the figures and are not limiting.
Un organe tubulaire 14 de séparation des flux d'air est monté au sein du pulseur et s'étend en partie dans l'espace interne de la turbine 2, depuis la zone médiane de la turbine 2 jusqu'à un point situé au-delà de l'extrémité 8. A tubular member 14 for separating the air flows is mounted within the blower and extends in part in the internal space of the turbine 2, from the central zone of the turbine 2 to a point beyond from the end 8.
Cet organe tubulaire 14 comporte une partie haute 15 cylindrique et une partie basse 16 s'évasant vers le bas. La partie haute 15 cylindrique s'étend entre l'extrémité 8 et au moins une entrée d'un flux d'air, qui sera décrite ultérieurement, tandis que la partie basse 16 s'étend entre l'extrémité 8 et la zone médiane de la turbine 2. La partie basse 16 présente une forme de révolution d'axe A, dont la génératrice est arrondie et a sa concavité tournée vers le haut. Tout comme pour le moyeu 9, la périphérie radialement externe de la partie basse 16 de l'organe tubulaire 14 a une tangente s'étendant dans un plan radial. Toutefois la périphérie radiale externe du moyeu 9 peut être supérieure ou égale à la périphérie radiale des pales 3 de la turbine 2, tandis que la périphérie radiale de la partie basse 16 est inférieure à la périphérie radiale des pâles 3 de la turbine 2, de manière à ne pas gêner la rotation des pâles 3. This tubular member 14 has a cylindrical upper part 15 and a lower part 16 flaring downwards. The cylindrical upper part extends between the end 8 and at least one inlet of an air flow, which will be described later, while the lower part 16 extends between the end 8 and the central zone of the turbine 2. The lower portion 16 has a form of revolution of axis A, whose generator is rounded and has its concavity facing upwards. As for the hub 9, the radially outer periphery of the lower part 16 of the tubular member 14 has a tangent extending in a radial plane. However, the outer radial periphery of the hub 9 may be greater than or equal to the radial periphery of the blades 3 of the turbine 2, while the radial periphery of the lower part 16 is smaller than the radial periphery of the blades 3 of the turbine 2, so as not to hinder the rotation of the blades 3.
Un boîtier, communément appelé volute 17, entoure la turbine 2 et le moteur 13, ladite volute 17 comporte deux canaux 18, 19 s'étendant respectivement en regard des parties 5, 6 de la turbine 2. Le boîtier 17 comporte en outre une paroi de séparation annulaire 20 permettant de délimiter les deux canaux 18, 19. L'organe tubulaire 14 est fixe par rapport à la volute 17. La volute 17 comprend une ouverture supérieure 22 permettant le passage d'au moins un flux d'air au sein du pulseur 1 ainsi que le passage de l'organe tubulaire 14. Ainsi, les flux l'air peuvent s'écouler au sein de l'organe tubulaire 14 ainsi que dans les passages latéraux situés entre la surface externe de l'organe tubulaire 14 et le bord de l'ouverture supérieure 22 de la volute 17. A housing, commonly called volute 17, surrounds the turbine 2 and the motor 13, said volute 17 has two channels 18, 19 respectively extending opposite the parts 5, 6 of the turbine 2. The housing 17 further comprises a wall annular separation 20 for defining the two channels 18, 19. The tubular member 14 is fixed relative to the volute 17. The volute 17 comprises an upper opening 22 for the passage of at least one air flow within of the blower 1 and the passage of the tubular member 14. Thus, the air flow can flow within the tubular member 14 and in the side passages between the outer surface of the tubular member 14 and the edge of the upper opening 22 of the volute 17.
Le pulseur 1 comprend en outre un boîtier additionnel 21 d'entrée d'air, fixé au- dessus de l'ouverture supérieure 22 de la volute 17. Le boîtier additionnel 21 délimite un espace interne 23 de manière à permettre l'entrée d'air dans l'organe tubulaire 14 et/ou dans la turbine 2 via l'ouverture supérieure 22. Le boîtier additionnel 21 comprend deux entrées d'air 24, 26 permettant l'écoulement d'un flux d'air de recyclage FR et d'un flux d'air extérieur FE au sein du pulseur. Telles qu'illustrées à la figure 1 , l'entrée d'air de recyclage 24 correspond à un orifice pour le flux d'air de recyclage FR tandis que l'entrée d'air extérieur 26 correspond à un orifice pour le flux d'air extérieur FE. The blower 1 further comprises an additional air inlet box 21, fixed above the upper opening 22 of the volute 17. The additional box 21 delimits an internal space 23 so as to allow the entry of air. air in the tubular member 14 and / or in the turbine 2 via the upper opening 22. The additional housing 21 comprises two air inlets 24, 26 for the flow of a recirculating air flow FR and d. an outside airflow FE within the blower. As illustrated in FIG. 1, the recirculating air inlet 24 corresponds to an orifice for the recirculating air flow FR whereas the external air inlet 26 corresponds to an orifice for the recirculation flow. outside air FE.
Afin de gérer l'entrée des différents flux d'air, le boîtier additionnel 21 comprend en outre des moyens de guidage d'air 28, 30, 31 , 32, 33. Les moyens de guidage d'air comprennent ici, un premier volet tambour 28, un second volet tambour 30, un volet papillon, ou drapeau, 31 , une cloison fixe 32 et une butée fixe 33. Le premier volet tambour 28 est agencé au niveau de l'entrée d'air extérieur 26 et plus particulièrement à proximité immédiate de la paroi du boîtier additionnel 21 . Le second volet tambour 30 est agencé entre l'entrée d'air de recyclage 24 et l'entrée d'air extérieur 26. Le volet papillon 31 et la cloison fixe 32 sont agencés au niveau de l'entrée d'air de recyclage 24 et plus particulièrement à proximité immédiate de la paroi du boîtier additionnel 21 . En d'autres termes, le second volet tambour 30 est agencé de manière centrale au sein du boîtier additionnel 21 , avec ledit volet papillon 31 et le premier volet tambour 28 étant situé de part et d'autre dudit second volet tambour 30, situé au centre du boîtier additionnel 21 . In order to manage the inlet of the different air flows, the additional box 21 further comprises air guiding means 28, 30, 31, 32, 33. The air guiding means comprise here, a first flap drum 28, a second drum flap 30, a butterfly flap, or flag, 31, a fixed partition 32 and a fixed stop 33. The first drum flap 28 is arranged at the outside air inlet 26 and more particularly at immediate proximity of the wall of the additional housing 21. The second drum flap 30 is arranged between the recycling air inlet 24 and the inlet 26. The butterfly flap 31 and the fixed partition 32 are arranged at the recycling air inlet 24 and more particularly in the immediate vicinity of the wall of the additional housing 21. In other words, the second drum flap 30 is arranged centrally within the additional housing 21, with said butterfly flap 31 and the first drum flap 28 being located on either side of said second drum flap 30, located at center of the additional box 21.
Selon cet agencement, le premier volet tambour 28 est apte à obturer partiellement l'entrée d'air extérieur 26, et la combinaison des premier et second volets tambour 28, 30 permet obturer intégralement l'entrée d'air extérieur 26 comme illustré à la figure 1 . Il est aussi possible de prévoir une butée fixe 33 agencée entre les deux volets tambour 28, 30 de manière à ce que lesdits volets tambour terminent leur course contre la butée fixe 33. Il en est de même pour le volet papillon 31 et la cloison fixe 32 qui obturent partiellement l'entrée d'air de recyclage 24, et la combinaison du volet papillon 31 , de la cloison fixe 32 et du second volet tambour 30 permet d'obturer intégralement l'entrée d'air de recyclage 24 comme illustré à la figure 2. La cloison fixe 32 est située entre le volet papillon 31 et le second volet tambour 30 central de manière à ce que lesdits deux volets 30, 31 terminent leur course en butant contre la cloison fixe 32. Le volet papillon 31 est apte à obturer le passage du flux d'air de recyclage FR entre le boîtier additionnel 21 et la cloison fixe 32. According to this arrangement, the first drum flap 28 is able to partially close off the outside air inlet 26, and the combination of the first and second drum flaps 28, 30 allows the external air inlet 26 to be completely sealed as illustrated in FIG. figure 1 . It is also possible to provide a fixed stop 33 arranged between the two drum flaps 28, 30 so that said drum flaps end their stroke against the fixed stop 33. It is the same for the butterfly flap 31 and the fixed partition. 32 which partially block the recirculation air inlet 24, and the combination of the butterfly flap 31, the fixed partition 32 and the second drum flap 30 completely closes the recirculation air inlet 24 as shown in FIG. Figure 2. The fixed partition 32 is located between the butterfly flap 31 and the second central drum flap 30 so that said two flaps 30, 31 terminate their stroke abutting against the fixed partition 32. The butterfly flap 31 is fit closing the passage of the recirculating air flow FR between the additional box 21 and the fixed partition 32.
Le premier volet tambour 28 a donc une course entre deux positions extrêmes, une première position extrême dite position « close », illustrée à la figure 1 , où le volet tambour 28 bute contre la paroi du boîtier additionnelle 21 , et une seconde position extrême dite position « ouverte », illustrée aux figures 2 et 3, où le premier volet tambour 28 bute contre la paroi de la butée fixe 33. Autrement dit, le premier volet tambour 28 comprend une paroi 36 permettant l'écoulement ou le tarissement du flux d'air extérieur FE, cette paroi 36 présente deux extrémités 38 et 39. Lorsque le premier volet tambour 28 est en position « close » telle qu'illustrée à la figure 1 , la première extrémité 38 bute contre la paroi du boîtier additionnel 21 et la deuxième extrémité 39 bute contre la butée fixe 33. Lorsque le premier volet tambour 28 est en position « ouverte », la première extrémité 38 bute contre la butée fixe 33 la deuxième extrémité 39 peut éventuellement buter contre le filtre 35. Toutefois la buté fixe 33 permet à elle seule de maintenir le premier volet tambour 28 dans chaque position extrême. Pour cela, la butée fixe 33 présente un bord arrondi, ou incurvé, adapté pour bloquer la rotation du premier volet tambour 28 pour chaque position extrême sans pour autant empêcher la rotation du volet tambour 28 pour passer d'une position extrême à l'autre. The first drum flap 28 therefore has a stroke between two extreme positions, a first extreme position called "close" position, illustrated in Figure 1, where the drum flap 28 abuts against the wall of the additional housing 21, and a second extreme position called "open" position, illustrated in Figures 2 and 3, wherein the first drum flap 28 abuts against the wall of the fixed stop 33. In other words, the first drum flap 28 comprises a wall 36 allowing the flow or drying of the flow of water. outside air FE, this wall 36 has two ends 38 and 39. When the first drum flap 28 is in the "closed" position as illustrated in Figure 1, the first end 38 abuts against the wall of the additional housing 21 and the second end 39 abuts against the fixed stop 33. When the first drum flap 28 is in the "open" position, the first end 38 abuts against the fixed stop 33, the second end 39 may be awake. ntually abut against the filter 35. However the butted fixed 33 alone allows to maintain the first drum flap 28 in each end position. For this, the fixed stop 33 has a rounded edge, or curved, adapted to block the rotation of the first drum flap 28 for each end position without preventing the rotation of the drum flap 28 to move from one extreme position to the other .
Le deuxième volet tambour 30 a aussi une course entre deux positions extrêmes, une première position extrême, illustrée aux figures 1 et 3, où ledit volet obture partiellement l'entrée d'air d'extérieur 26, le volet tambour 30 butant contre la butée fixe 33, et une seconde position extrême, illustrée à la figure 2, où ledit volet obture partiellement l'entrée d'air de recyclage 24, le volet tambour 30 butant contre la cloison fixe 32. The second drum flap 30 also has a stroke between two extreme positions, a first extreme position, illustrated in FIGS. 1 and 3, wherein said shutter partially closes the outside air inlet 26, the drum flap 30 abuts against the stop fixed 33, and a second extreme position, illustrated in Figure 2, wherein said shutter partially closes the recirculation air inlet 24, the drum flap 30 abuts against the fixed partition 32.
Afin d'améliorer la qualité de l'air, le boîtier additionnel 21 comprend en outre un filtre 35. Le filtre 35 est monté dans le boîtier additionnel 21 et occupe toute la surface de l'ouverture de passage de l'air compte tenu de sa position dans le pulseur 1 d'aspiration. Un tel filtre 35 peut être démonté facilement, en ouvrant ou en retirant le boîtier additionnel 21 accessible par exemple depuis la boîte à gants du véhicule. Le filtre 35 est monté axialement entre les entrées d'air 24, 26 et l'extrémité supérieure de l'organe tubulaire 14 située en partie inférieure du boîtier additionnel 21 . In order to improve the quality of the air, the additional box 21 further comprises a filter 35. The filter 35 is mounted in the additional box 21 and occupies the entire surface of the air passage opening in view of the its position in the suction blower 1. Such a filter 35 can be easily removed, by opening or removing the additional housing 21 accessible for example from the glove box of the vehicle. The filter 35 is mounted axially between the air inlets 24, 26 and the upper end of the tubular member 14 located in the lower part of the additional housing 21.
La figure 1 illustre un premier mode de fonctionnement, dans ce mode de fonctionnement, appelé 100% recyclage, seul l'air de recyclage est aspiré au sein du pulseur, de manière à alimenter le dispositif de chauffage, ventilation et/ou de climatisation en air de recyclage. Un tel mode de fonctionnement peut par exemple être utilisé en cas de climatisation de l'air (par exemple en été). En effet, dans un tel cas, l'humidité présente dans l'air de l'habitacle a tendance à se condenser lors de son passage dans l'évaporateur permettant le refroidissement de l'air. Cet air de recyclage n'est donc pas ou peu chargé en humidité et peut être envoyé dans l'habitacle à proximité du pare-brise. FIG. 1 illustrates a first mode of operation, in this mode of operation, called 100% recycling, only the recirculation air is sucked into the blower, so as to supply the heating, ventilation and / or air conditioning device with recirculation air. Such a mode of operation can for example be used in case of air conditioning (for example in summer). Indeed, in such a case, the humidity in the air of the passenger compartment tends to condense during its passage through the evaporator for cooling the air. This recycling air is therefore not or little loaded with moisture and can be sent into the passenger compartment near the windshield.
Dans ce mode de fonctionnement, les deux volets tambours 28, 30 sont en position dite « close » pour l'entrée d'air extérieur 26 cette dernière étant obturée de sorte que le flux d'air extérieur FE ne puisse pas s'écouler au sein du pulseur 1 . Lesdits volets tambour 28, 30 terminent leur course respective de manière à être en butée contre la butée fixe 33 pour permettre une obturation étanche de l'entrée d'air extérieur 26. Les volets papillon 31 et tambour 30 sont en position dite « ouverte » pour l'entrée d'air de recyclage 24, cette dernière étant ouverte de sorte que le flux d'air de recyclage FR puisse s'écouler au sein du pulseur 1 . In this operating mode, the two drum flaps 28, 30 are in the so-called "closed" position for the outside air inlet 26, the latter being closed so that the outside air flow FE can not flow to the outside. within the blower 1. said drum flaps 28, 30 terminate their respective stroke so as to abut against the fixed stop 33 to allow tight sealing of the outside air inlet 26. The butterfly flaps 31 and drum 30 are in the so-called "open" position for the recycling air inlet 24, the latter being open so that the flow of recirculating air FR can flow within the blower 1.
Le flux d'air de recyclage FR, correspondant à l'air prélevé dans l'habitacle, pénètre donc par l'entrée d'air de recyclage 24, traverse le filtre 35 et l'organe tubulaire 14, la partie basse 5 de la turbine 2, et pénètre dans le canal 18. Parallèlement, le flux d'air de recyclage FR pénètre, via les passages latéraux situés entre la surface externe de l'organe tubulaire 14 et le bord de l'ouverture supérieure 22 de la volute 17, la partie haute 6 de la turbine 2 et pénètre dans le canal 19. The recycling air flow FR, corresponding to the air taken from the passenger compartment, thus enters through the recirculating air inlet 24, passes through the filter 35 and the tubular member 14, the lower part 5 of the turbine 2, and enters the channel 18. At the same time, the recirculation air flow FR enters via the lateral passages located between the external surface of the tubular member 14 and the edge of the upper opening 22 of the volute 17 , the upper part 6 of the turbine 2 and enters the channel 19.
Autrement dit, le flux d'air de recyclage FR est dirigé par les surfaces correspondantes du déflecteur 9 et de l'organe tubulaire 14 en regard de la partie axiale basse 5 de la turbine 2. Après avoir traversé les pales 3 de la turbine 2, ce flux d'air pénètre dans le canal 18, ce dernier débouchant dans l'habitacle du véhicule à distance du pare-brise. Parallèlement, le flux d'air de recyclage FR est envoyé également à l'extérieur de l'organe tubulaire 14. Ce flux d'air est dirigé par la surface correspondante de l'organe tubulaire 14 en regard de la partie axiale haute 6 de la turbine 2. Après avoir traversé les pales 3 de la turbine 2, ce flux d'air pénètre dans le canal 19, ce dernier débouchant dans l'habitacle du véhicule à proximité ou directement en regard du pare-brise. II est donc possible avec un tel agencement, et notamment en raison des deux volets tambour 28, 30 qui permettent le passage du flux d'air de recyclage FR, de diriger le flux d'air de recyclage FR sur l'intégralité de la surface du filtre 35 garantissant ainsi une meilleure filtration ainsi qu'une réduction des pertes de charges. La figure 2 illustre un deuxième mode de fonctionnement, dans ce mode de fonctionnement, appelé 100% frais, seul l'air extérieur est aspiré au sein du pulseur, de manière à alimenter le dispositif de chauffage, ventilation et/ou de climatisation en air extérieur. Un tel mode de fonctionnement peut par exemple être utilisé en cas de chauffage de l'air extérieur (par exemple en hiver ou à la mi-saison) tout en évitant que trop de buée ne se forme sur le pare-brise. In other words, the recirculating air flow FR is directed by the corresponding surfaces of the deflector 9 and the tubular member 14 opposite the low axial portion 5 of the turbine 2. After passing through the blades 3 of the turbine 2 this air flow enters the channel 18, the latter opening into the passenger compartment of the vehicle away from the windshield. At the same time, the recirculating air flow FR is also sent outside the tubular member 14. This air flow is directed by the corresponding surface of the tubular member 14 opposite the high axial portion 6 of the tubular member 14. the turbine 2. After passing through the blades 3 of the turbine 2, this air flow enters the channel 19, the latter opening into the passenger compartment of the vehicle nearby or directly facing the windshield. It is therefore possible with such an arrangement, and in particular because of the two drum flaps 28, 30 which allow the passage of the recirculating air flow FR, to direct the recirculation air flow FR over the entire surface. filter 35 thus ensuring better filtration and a reduction in pressure losses. FIG. 2 illustrates a second mode of operation, in this mode of operation, called 100% fresh, only outside air is sucked into the blower, so as to supply the heating, ventilation and / or air conditioning device with air outside. Such a mode of operation can for example be used in case of outside air heating (eg in winter or mid-season) while avoiding too much fogging on the windshield.
Dans ce mode de fonctionnement, les deux volets tambours 28, 30 sont en position dite « ouverte » pour l'entrée d'air extérieur 26 cette dernière étant ouverte de sorte que le flux d'air extérieur FE puisse s'écouler au sein du pulseur 1 . Les volets papillon 31 et tambour 30 sont en position dite « close » pour l'entrée d'air de recyclage 24, cette dernière étant obturée de sorte que le flux d'air de recyclage FR ne puisse pas traverser le pulseur 1 . Lesdits volets tambour et papillon 30, 31 terminent leur course respective en butant contre la cloison fixe 32 pour permettre une obturation étanche de l'entrée d'air de recyclage 24. In this operating mode, the two drum flaps 28, 30 are in the so-called "open" position for the outside air inlet 26, the latter being open so that the outside air flow FE can flow within the Pulser 1. The butterfly flaps 31 and drum 30 are in the "closed" position for the recirculating air inlet 24, the latter being closed so that the recirculation air flow FR can not pass through the blower 1. Said drum and butterfly flaps 30, 31 terminate their respective stroke abutting against the fixed partition 32 to allow sealing of the recirculation air inlet 24.
Dans ce cas, le flux d'air extérieur FE entrant traverse le filtre 35 et l'organe tubulaire 14, la partie basse 5 de la turbine 2, et pénètre dans le canal 18 ce dernier débouchant dans l'habitacle du véhicule, par exemple à distance du pare-brise. Parallèlement, le flux d'air extérieur FE s'écoule également, via l'extérieur de l'organe tubulaire 14, dans la partie haute 6 de la turbine 2 et pénètre dans le canal 19 ce dernier débouchant dans l'habitacle du véhicule, par exemple à proximité ou directement en regard du pare-brise. In this case, the outside air flow FE entering through the filter 35 and the tubular member 14, the lower part 5 of the turbine 2, and enters the channel 18 the latter opening into the passenger compartment of the vehicle, for example away from the windshield. Meanwhile, the external air flow FE also flows, via the outside of the tubular member 14, in the upper part 6 of the turbine 2 and enters the channel 19 the latter opening into the passenger compartment of the vehicle, for example near or directly next to the windshield.
La figure 3 illustre un tierce mode de fonctionnement, dans ce mode de fonctionnement, appelé 50/50, de l'air extérieur et de l'air de recyclage sont aspirés au sein du pulseur, de manière à alimenter le dispositif de chauffage, ventilation et/ou de climatisation en air extérieur et de recyclage, le pulseur 1 permettant de générer deux flux d'air distincts. Un tel mode de fonctionnement peut par exemple être utilisé en cas de chauffage de l'air (par exemple en hiver ou à la mi-saison) et permet de réduire le temps nécessaire pour atteindre une température de consigne, la température de l'air prélevé dans l'habitacle étant supérieure à la température de l'air externe, sans que trop de buée ne se forme sur le pare-brise. Figure 3 illustrates a third mode of operation, in this mode of operation, called 50/50, outside air and recirculation air are sucked into the blower, so as to supply the heating device, ventilation and / or external air conditioning and recycling, the blower 1 to generate two separate air flows. Such a mode of operation can for example be used in case of air heating (for example in winter or mid-season) and reduces the time required to reach a set temperature, the air temperature taken in the passenger compartment being higher than the temperature of the external air, without too much fog being formed on the windshield.
Dans ce mode de fonctionnement, le premier volet tambour 28 est en position dite « ouverte », tandis que le second volet tambour 30 est position dite « close », pour l'entrée d'air extérieur 26 de manière à ce que le flux d'air extérieur FE puisse s'écouler au sein du pulseur 1 . Le second volet tambour 30 est en position dite « ouverte », tandis que le volet papillon 31 est en position « close », pour l'entrée d'air de recyclage 24 de manière à ce que le flux d'air de recyclage FR puisse également s'écouler dans le pulseur 1 . Le volet papillon 31 et la cloison fixe 32 oriente le flux d'air de recyclage FR vers l'intérieur de l'organe tubulaire 14 tandis que le volet tambour 28 oriente le flux d'air extérieur FE vers l'extérieur de l'organe tubulaire 14 comme illustré à la figure 3. In this operating mode, the first drum flap 28 is in the so-called "open" position, while the second drum flap 30 is called "close" position, for the outside air inlet 26 so that the flow of air FE outdoor air can flow into the blower 1. The second drum flap 30 is in the so-called "Open", while the butterfly flap 31 is in "closed" position, for the recirculation air inlet 24 so that the recirculation air flow FR can also flow into the blower 1. The butterfly flap 31 and the fixed partition 32 directs the recirculating air flow FR towards the inside of the tubular member 14 while the drum flap 28 orients the outside air flow FE towards the outside of the organ tubular 14 as shown in Figure 3.
Dans ce cas, le flux d'air de recyclage FR traverse le filtre 35 et l'organe tubulaire 14, la partie basse 5 de la turbine 2, et pénètre dans le canal 18 ce dernier débouchant dans l'habitacle du véhicule à distance du pare-brise. Parallèlement, le flux d'air extérieur FE s'écoule, via l'extérieur de l'organe tubulaire14, dans la partie haute 6 de la turbine 2 et pénètre dans le canal 19 ce dernier débouchant dans l'habitacle du véhicule à proximité ou directement en regard du pare-brise. In this case, the recycling air flow FR passes through the filter 35 and the tubular member 14, the lower part 5 of the turbine 2, and enters the channel 18, the latter opening into the passenger compartment of the vehicle at a distance from the windshield. At the same time, the external air flow FE flows via the outside of the tubular member 14 into the upper part 6 of the turbine 2 and enters the channel 19, the latter opening into the passenger compartment of the vehicle in the vicinity or directly facing the windshield.

Claims

Revendications claims
Pulseur (1 ) d'aspiration pour un dispositif de chauffage, ventilation et/ou climatisation d'un véhicule automobile, le pulseur (1 ) comprenant une turbine (2) apte à être entraînée en rotation autour d'un axe, des moyens de séparation aptes à délimiter un premier canal de circulation d'air permettant l'écoulement d'un premier flux d'air destiné à traverser une première partie axiale (5) de la turbine (2) et un second canal de circulation d'air permettant l'écoulement d'un second flux d'air destiné à traverser une seconde partie axiale (6) de la turbine (2), lesdits moyens de séparation comportant un organe tubulaire (14) monté à l'endroit d'une première extrémité (8) de ladite turbine et délimitant un espace interne formant au moins une partie du premier canal de circulation d'air, le second canal de circulation d'air s'étendant à l'extérieur de l'organe tubulaire (14), ledit pulseur comprend en outre une entrée d'air de recyclage (24), une entrée d'air extérieur (26), et des moyens de guidage d'air (28, 30, 31 , 32, 33) aptes à diriger un premier flux d'air dans le premier canal de circulation d'air, et à diriger un second flux d'air dans le second canal de circulation d'air, un filtre (35) destiné a être traversé par le premier et le second flux d'air, caractérisé en ce que lesdits moyens de guidage d'air (28, 30, 31 , 32, 33) sont aptes à diriger le flux d'air (FR) entrant par l'entrée d'air de recyclage (24) sur l'intégralité de la surface du filtre (35). Suction blower (1) for a heating, ventilation and / or air-conditioning device of a motor vehicle, the blower (1) comprising a turbine (2) capable of being driven in rotation about an axis, means for separation capable of delimiting a first air circulation channel allowing the flow of a first air flow intended to pass through a first axial portion (5) of the turbine (2) and a second air circulation channel allowing the flow of a second air flow intended to pass through a second axial portion (6) of the turbine (2), said separation means comprising a tubular member (14) mounted at the location of a first end ( 8) of said turbine and delimiting an internal space forming at least a part of the first air circulation channel, the second air circulation channel extending outside the tubular member (14), said pulsator further comprises a recirculation air inlet (24), an air intake ext (26), and air guiding means (28, 30, 31, 32, 33) adapted to direct a first flow of air into the first air flow channel, and to direct a second flow of air. air in the second air circulation channel, a filter (35) for passing through the first and second air streams, characterized in that said air guiding means (28, 30, 31, 32, 33) are adapted to direct the flow of air (FR) entering through the recirculating air inlet (24) over the entire surface of the filter (35).
Pulseur (1 ) d'aspiration selon la revendication 1 , caractérisé en ce que ledit pulseur comprend en outre un boîtier additionnel (21 ) recouvrant la première extrémité (8) de la turbine (2) et l'organe tubulaire (14). Pulseur (1) suction according to claim 1, characterized in that said blower further comprises an additional housing (21) covering the first end (8) of the turbine (2) and the tubular member (14).
Pulseur (1 ) d'aspiration selon la revendication 2, caractérisé en ce que les moyens de guidage d'air (28, 30, 31 , 32, 33) sont compris dans le boîtier additionnel (21 ). Suction pump (1) according to claim 2, characterized in that the air guiding means (28, 30, 31, 32, 33) are included in the additional housing (21).
4. Pulseur (1 ) d'aspiration selon l'une quelconque des revendications 1 à 3, caractérisé en ce que les moyens de guidage d'air (28, 30, 31 , 32, 33) comprennent au moins un premier et un second volet tambour (28, 30). 4. Pulseur (1) suction according to any one of claims 1 to 3, characterized in that the air guiding means (28, 30, 31, 32, 33) comprise at least a first and a second drum flap (28, 30).
5. Pulseur (1 ) d'aspiration selon la revendication 4, caractérisé en ce que lesdits volets tambours (28, 30) sont agencés de manière à obturer intégralement dans une position le flux d'air (FE) entrant par l'entré d'air extérieur (26). 5. Pulseur (1) suction according to claim 4, characterized in that said drum flaps (28, 30) are arranged to completely close in one position the air flow (FE) entering through the inlet d outside air (26).
6. Pulseur (1 ) d'aspiration selon l'une des revendications 4 ou 5, caractérisé en ce que les moyens de guidage d'air (28, 30, 31 , 32, 33) comprennent en outre un volet papillon (31 ). 6. Pulseur (1) suction according to one of claims 4 or 5, characterized in that the air guiding means (28, 30, 31, 32, 33) further comprises a butterfly flap (31) .
7. Pulseur (1 ) d'aspiration selon la revendication 6, caractérisé en ce que le second volet tambour (30) est agencé de manière centrale dans le boîtier additionnel (21 ), le volet papillon (31 ) et le premier volet tambour (28) étant agencés de part et d'autre dudit second volet tambour (30). 7. suction blower (1) according to claim 6, characterized in that the second drum flap (30) is arranged centrally in the additional housing (21), the butterfly flap (31) and the first drum flap ( 28) being arranged on either side of said second drum flap (30).
8. Pulseur (1 ) d'aspiration selon l'une quelconque des revendications 6 ou 7, caractérisé en ce que le boîtier additionnel (21 ) comprend une cloison fixe (32) située entre le volet papillon (31 ) et le second volet tambour (30), le volet papillon (31 ) étant apte à obturer le passage du flux d'air (FR) entre les parois du boîtier additionnel (21 ) et la cloison fixe (32). 8. Pulseur (1) suction according to any one of claims 6 or 7, characterized in that the additional housing (21) comprises a fixed partition (32) located between the butterfly flap (31) and the second drum flap (30), the butterfly flap (31) being adapted to close the passage of the air flow (FR) between the walls of the additional housing (21) and the fixed partition (32).
9. Dispositif de chauffage, ventilation et/ou climatisation caractérisé en ce qu'elle comprend un pulseur (1 ) d'aspiration selon l'une des revendications 1 à 8. 9. Heating, ventilation and / or air conditioning device characterized in that it comprises a suction blower (1) according to one of claims 1 to 8.
PCT/FR2016/052932 2015-12-17 2016-11-10 Intake blower intended for a motor vehicle heating, ventilation and/or air conditioning device, and heating, ventilation and/or air conditioning device WO2017103358A1 (en)

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FR1562583 2015-12-17
FR1562583A FR3045741B1 (en) 2015-12-17 2015-12-17 SUCTION PULSER FOR A DEVICE FOR HEATING, VENTILATION AND / OR AIR CONDITIONING OF A MOTOR VEHICLE AND DEVICE FOR HEATING, VENTILATION AND / OR AIR CONDITIONING

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FR3045741A1 (en) 2017-06-23
FR3045741B1 (en) 2019-04-05

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