WO2020095563A1 - Centrifugal blower - Google Patents

Centrifugal blower Download PDF

Info

Publication number
WO2020095563A1
WO2020095563A1 PCT/JP2019/037980 JP2019037980W WO2020095563A1 WO 2020095563 A1 WO2020095563 A1 WO 2020095563A1 JP 2019037980 W JP2019037980 W JP 2019037980W WO 2020095563 A1 WO2020095563 A1 WO 2020095563A1
Authority
WO
WIPO (PCT)
Prior art keywords
air
casing
suction
outside air
fan
Prior art date
Application number
PCT/JP2019/037980
Other languages
French (fr)
Japanese (ja)
Inventor
顕治 岩本
Original Assignee
株式会社デンソー
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 株式会社デンソー filed Critical 株式会社デンソー
Publication of WO2020095563A1 publication Critical patent/WO2020095563A1/en

Links

Images

Classifications

    • 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
    • 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
    • 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
    • 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
    • F04D29/60—Mounting; Assembling; Disassembling
    • F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units

Definitions

  • the present disclosure relates to a centrifugal blower.
  • centrifugal blower applied to an inside / outside air two-layer type air conditioner for a vehicle
  • a centrifugal blower capable of simultaneously sucking air outside the vehicle compartment and air inside the vehicle cabin from one axial side of the fan axis.
  • Patent Document 1 discloses, as the above-mentioned centrifugal blower, one in which a separation cylinder is divided into upper and lower parts.
  • An object of the present disclosure is to provide a centrifugal blower capable of simplifying assembly work while suppressing the number of parts.
  • Centrifugal blower A centrifugal fan that blows out air taken in from one side in the axial direction of the fan axis toward the outside in the radial direction,
  • a fan casing accommodating the centrifugal fan and having an inlet through which air sucked into the centrifugal fan passes is formed on one side in the axial direction with respect to the centrifugal fan; It includes a tubular portion arranged inside the radial direction of the centrifugal fan, and separates air passing through the suction port into inner air flowing inside the tubular portion and outer air flowing outside the tubular portion.
  • a separation tube A suction casing which is arranged on one side in the axial direction with respect to the fan casing and which forms an air passage through which air introduced into the suction port passes
  • the suction casing is an assembly body in which a first suction division body and a second suction division body which are divided in the axial direction are assembled with each other
  • the separation cylinder is an assembly body in which a first cylinder division body and a second cylinder division body that are divided in the axial direction are assembled to each other, and the first cylinder division body is configured as an integral molding with the first suction division body.
  • the second cylinder divided body is configured as an integrally molded product with the second suction divided body.
  • the suction casing and the separation cylinder are composed of two parts such as the first cylinder divided body and the integrally formed product of the first suction divided body, and the second cylinder divided body and the second suction divided body. You can In such a centrifugal blower, the number of parts can be suppressed as compared with the case where the inside / outside air casing and the separation cylinder are formed as separate bodies and each is formed by a plurality of divided bodies.
  • suction casing and the separation cylinder are obtained by mutually assembling the integrally formed product of the first cylinder divided body and the first suction divided body and the integrally formed product of the second cylinder divided body and the second suction divided body.
  • the assembly work can be simplified.
  • FIG. 2 is a sectional view taken along line II-II in FIG. 1. It is a typical sectional view showing the state where the assembly of the fan casing was disassembled. It is a typical sectional view showing the assembled state of a fan casing. It is a typical sectional view showing the state where the assembly of the inside and outside air casing and the separation cylinder was disassembled.
  • FIG. 4 is a schematic cross-sectional view showing an assembled state of an inside / outside air casing and a separation cylinder. It is a typical exploded view of the centrifugal fan concerning an embodiment.
  • the centrifugal blower 1 is configured such that the outside air (hereinafter, also referred to as outside air) inside the vehicle compartment and the air (hereinafter, also referred to as inside air) inside the vehicle compartment can be blown out into the vehicle interior.
  • outside air hereinafter, also referred to as outside air
  • inside air air inside the vehicle compartment
  • Centrifugal blower 1 is located inside the instrument panel at the front of the passenger compartment. As shown in FIGS. 1 and 2, the centrifugal blower 1 includes a centrifugal fan 10, an electric motor 20, a fan casing 30, an inside / outside air switching unit 40, and a separation cylinder 50.
  • the centrifugal fan 10 is a fan that blows out air sucked from one side of the axial center DRa of the fan axis CL toward the outside in the radial direction DRr.
  • the centrifugal fan 10 is composed of a sirocco fan.
  • the centrifugal fan 10 is not limited to a sirocco fan, but may be a radial fan, a turbo fan, or the like.
  • the axial direction DRa is a direction extending along the fan axis CL.
  • the radial direction DRr is a direction that is orthogonal to the fan axis CL and extends radially around the fan axis CL.
  • the centrifugal fan 10 has a plurality of blades 11, a main plate 12, and a separation plate 13.
  • the plurality of blades 11 are arranged side by side around the fan axis CL.
  • Each of the plurality of blades 11 has a one-side blade tip 111 that is one end on the axial direction DRa and another blade tip 112 that is an end portion on the other side in the axial direction DRa.
  • An inter-blade air passage 110 through which air flows is formed between the plurality of blades 11.
  • the main plate 12 is composed of a disk-shaped member centered on the fan axis CL.
  • the rotating shaft 22 of the electric motor 20 is connected to the center of the main plate 12 so as not to rotate relative to it.
  • the other blade tip 112 of the plurality of blades 11 is fixed to the outer portion of the main plate 12 in the radial direction DRr.
  • the separation plate 13 separates air flowing between the plurality of blades 11 into air flowing on one side of the separation plate 13 in the axial direction DRa and air flowing on the other side of the separation plate 13 in the axial direction DRa. It is a member of. That is, the separating plate 13 is a member for dividing the inter-blade air passage 110 into the first blade passage 110A and the second blade passage 110B arranged on the other side of the first blade passage 110A in the axial direction DRa. Specifically, the separation plate 13 is formed of an annular plate-shaped member that intersects with each of the plurality of blades 11 and has the fan axis CL as the center. The separating plate 13 is fixed to the blade 11 at a portion intersecting with the blade 11.
  • the centrifugal fan 10 is configured as an integrally molded product in which a plurality of blades 11, a main plate 12, and a separation plate 13 are integrally molded by a molding technique such as injection molding.
  • a molding technique such as injection molding.
  • the plurality of blades 11, the main plate 12, and a part of the separation plate 13 may be formed separately.
  • the electric motor 20 is an electric drive device that rotates the centrifugal fan 10.
  • the electric motor 20 has a main body 21 that generates power, a rotating shaft 22 that rotates by the power of the main body 21, and a motor cover 23.
  • the rotary shaft 22 extends from the main body 21 toward one side in the axial direction DRa.
  • the rotating shaft 22 is fixed to the main plate 12 of the centrifugal fan 10 by a motor cap 24. As a result, when the rotary shaft 22 rotates, the centrifugal fan 10 rotates.
  • the motor cover 23 is a member that covers a portion of the main body 21 on the other side in the axial direction DRa.
  • the motor cover 23 is fixed to the fan casing 30 while holding the main body 21.
  • the fan casing 30 is a housing that houses the centrifugal fan 10 inside.
  • the fan casing 30 is formed with an intake port 31 through which air sucked into the centrifugal fan 10 passes.
  • the suction port 31 is formed at a portion located on one side of the centrifugal fan 10 in the axial direction DRa.
  • the fan casing 30 is provided with a fan insertion hole 32 for inserting the centrifugal fan 10 in a portion located on the other side of the centrifugal fan 10 in the axial direction DRa.
  • the fan casing 30 has a bell mouth 33, a mounting frame 34, an outlet passage forming portion 35, and a partition plate 36.
  • the bell mouth 33 constitutes a peripheral portion of the suction port 31 in the fan casing 30.
  • the bell mouth 33 has an arc-shaped cross section so that air can smoothly flow into the suction port 31.
  • the attachment frame 34 is a rectangular frame body for attaching the inside / outside air switching unit 40 to the fan casing 30.
  • the mounting frame 34 is provided in a portion of the fan casing 30 that is located on one side of the centrifugal fan 10 in the axial direction DRa.
  • the blow-out passage forming portion 35 is a member that forms a blow-out air passage 350 through which air blown out from the centrifugal fan 10 flows, outside the centrifugal fan 10 in the radial direction DRr.
  • the blowout air passage 350 is formed in a spiral shape around the centrifugal fan 10. That is, in the fan casing 30, the blowout air passage 350 is formed in a spiral shape around the centrifugal fan 10.
  • Such a fan casing 30 is also called a scroll casing.
  • the fan casing 30 may be formed of a casing other than the scroll casing.
  • the partition plate 36 is arranged inside the outlet passage forming portion 35.
  • the partition plate 36 is composed of an annular plate-shaped member centered on the fan axis CL.
  • the partition plate 36 partitions the blowout air passage 350 into a first blowout passage 350A on one side in the axial direction DRa and a second blowout passage 350B located on the other side in the axial direction DRa with respect to the first blowout passage 350A. There is.
  • the partition plate 36 has an outer portion in the radial direction DRr fixed to the inner wall of the blowout passage forming portion 35.
  • the partition plate 36 is arranged such that a portion inside the radial direction DRr faces a portion outside the radial direction DRr of the separation plate 13 in the radial direction DRr.
  • an air conditioning unit is connected to the outlet of the blowout air passage 350.
  • the air conditioning unit is a unit in which a cooling heat exchanger and a heating heat exchanger that adjust the temperature of the air blown into the vehicle compartment are housed inside an air conditioning casing that forms an air passage. The air blown out from the fan casing 30 by the rotation of the centrifugal fan 10 is adjusted to a desired temperature inside the air conditioning unit and then blown out into the passenger compartment.
  • the fan casing 30 is made of a resin (for example, polypropylene) that has some elasticity and is excellent in strength.
  • the fan casing 30 is actually composed of an assembled body in which a plurality of divided bodies are assembled for convenience of resin molding, assembly of built-in parts, or the like.
  • the plurality of divided bodies are fastened by fastening means such as screws and clips.
  • the fan casing 30 is composed of three divided bodies such as an upper divided body 30A, a lower divided body 30B, and a partition plate 36.
  • 30 A of upper side division bodies are division bodies which comprise the one part of the axial direction DRa in the fan casing 30.
  • the upper divided body 30A is provided with a suction port 31, a bell mouth 33, a mounting frame 34, and the like.
  • the lower side divided body 30B is a divided body that constitutes the other side portion of the fan casing 30 in the axial direction DRa.
  • a fan insertion hole 32 is formed in the lower divided body 30B.
  • the fan casing 30 is configured by assembling the respective divided bodies in a state where the upper divided body 30A, the partition plate 36, and the lower divided body 30B are stacked in the axial direction DRa. ing.
  • the inside / outside air switching unit 40 switches and introduces air from the inside and outside of the vehicle, and is attached to the mounting frame 34 in the fan casing 30.
  • the inside / outside air switching unit 40 has an inside / outside air casing 41 forming an outer shell.
  • the inside / outside air casing 41 is arranged on one side of the fan casing 30 in the axial direction DRa.
  • the inside / outside air casing 41 and the suction casing forming an air passage through which the air introduced into the inlet 31 passes.
  • the inside / outside air casing 41 has a certain degree of elasticity and is formed of a resin (for example, polypropylene) which is also excellent in strength.
  • the inside / outside air casing 41 is formed with an outside air inlet 411 for introducing outside air, a first inside air inlet 412 and a second inside air inlet 413 for introducing inside air.
  • the outside air introduction port 411, the first inside air introduction port 412, and the second inside air introduction port 413 are formed to be aligned in a predetermined direction orthogonal to the fan axis CL.
  • the inside air from the outside air introduction port 411 or the inside air from the first inside air introduction port 412 into which the inside air is introduced is introduced from the first introduction space 410A and the second inside air introduction port 413.
  • the second introduction space 410B is formed.
  • the inside / outside air casing 41 is formed with a communication passage 414 that connects the first introduction space 410A and the second introduction space 410B.
  • An air filter 42 is arranged inside the inside / outside air casing 41.
  • the air filter 42 is a filtering material that removes dust and the like in the air introduced into the inside / outside air casing 41.
  • the air filter 42 is made of a material having air permeability.
  • a non-woven fabric made of resin fibers such as PET and PP can be used as the material of the air filter 42.
  • the inside / outside air casing 41 is provided with an opening / closing member 43 for opening / closing the inlets 411, 412, 413 on the upstream side of the air flow of the air filter 42.
  • the opening / closing member 43 includes a first opening / closing door 431 for selectively opening / closing the outside air introducing port 411 and the first inside air introducing port 412, and a second opening / closing door 432 for selectively opening / closing the second inside air introducing port 413 and the communication passage 414. And have.
  • the first opening / closing door 431 is a rotary door that rotates around the first door shaft 431a.
  • the second opening / closing door 432 is configured by a rotary door that rotates around the second door shaft 432a, like the first opening / closing door 431.
  • a seal plate 44 is provided inside the inside / outside air casing 41 so as to come into contact with the second opening / closing door 432 when the second opening / closing door 432 is displaced to a position that closes the communication passage 414.
  • the seal plate 44 extends along the axis of the door shafts 431a and 432a.
  • the seal plate 44 is arranged adjacent to the air suction surface of the air filter 42.
  • the seal plate 44 is arranged so as to cross the internal space of the inside / outside air casing 41.
  • the inside / outside air switching unit 40 thus configured separates the inside air by opening the outside air introduction port 411 with the first opening / closing door 431 and opening the second inside air introduction port 413 with the second opening / closing door 432. It is possible to flow inside the tube 50 and inside the separation tube 50. That is, the inside / outside air casing 41 allows the inside air introduced from the second inside air introduction port 413 to flow inside the separation cylinder 50 and allows the outside air introduced from the outside air introduction port 411 to flow outside the separation cylinder 50. It is configured.
  • the separation cylinder 50 is a cylindrical member extending in the axial direction DRa. That is, the separation cylinder 50 extends along the axial direction DRa, and the portions located at both ends in the axial direction DRa are open.
  • the separation cylinder 50 includes a cylindrical portion arranged inside the centrifugal fan 10 in the radial direction DRr.
  • the separation cylinder 50 is made of a resin (for example, polypropylene) having a certain degree of elasticity and excellent strength.
  • At least a part of the separation cylinder 50 of the fan casing 30 is arranged so that the air passing through the suction port 31 is separated into inner air flowing inside the cylindrical portion and outer air flowing outside the cylindrical portion. It is located inside.
  • the separation cylinder 50 has an air introduction part 51 located inside the inside / outside air casing 41, an air lead-out part 52 located inside the fan casing 30, and an intermediate part 53 connecting the air introduction part 51 and the air lead-out part 52. is doing.
  • the air introduction portion 51 is a portion of the separation cylinder 50 that is connected to the inside / outside air casing 41.
  • the air introduction portion 51 has an upstream end opening toward the second introduction space 410B so that the air introduced into the second introduction space 410B of the inside / outside air casing 41 flows into the inside of the separation cylinder 50.
  • the air introduction portion 51 has a substantially rectangular outer shape when viewed from one side in the axial direction DRa.
  • the air introduction portion 51 has a size capable of covering a substantially half region of the bell mouth 33 of the fan casing 30.
  • the air outlet part 52 and the intermediate part 53 are parts for guiding the inner air flowing inside the separation cylinder 50 and the outer air flowing outside the separation cylinder 50 to the centrifugal fan 10.
  • the air outlet portion 52 has a shape that expands in the radial direction DRr toward the other side in the axial direction DRa in order to guide the inner air and the outer air between the plurality of blades 11. That is, the air outlet portion 52 has a diameter that increases toward the other side in the axial direction DRa.
  • At least a part of the intermediate portion 53 is inclined with respect to the axial direction DRa so that the central axis of the air outlet portion 52 coincides with the fan axis CL.
  • the cross-sectional area inside the intermediate portion 53 is smaller than that of the air introduction portion 51 and the air outlet portion 52.
  • the separation cylinder 50 is arranged such that the downstream end of the air outlet portion 52 faces the inner portion of the separation plate 13 of the centrifugal fan 10 in the radial direction DRr in the radial direction DRr.
  • the outside air flowing outside the separation cylinder 50 flows into the first blade passage 110A of the centrifugal fan 10, and the inside air flowing inside the separation cylinder 50 flows into the second blade passage 110B of the centrifugal fan 10.
  • the separation cylinder 50 has a different shape for the air introduction portion 51, the air discharge portion 52, and the intermediate portion 53, and the structure thereof is complicated. Therefore, it may be difficult to integrally form the separation cylinder 50 by a molding technique such as injection molding.
  • the inside / outside air casing 41 needs to have the seal plate 44 formed therein and the opening / closing member 43 disposed therein, and it is difficult to integrally form the casing 41 by a molding technique such as injection molding.
  • the inside / outside air casing 41 and the separation cylinder 50 are an assembly of a plurality of divided bodies, and the divided body of the inside / outside air casing 41 and the division body of the separation cylinder 50 are integrally molded. I am configuring.
  • the inside / outside air casing 41 is configured by an assembly body in which a first inside / outside air division body 41A and a second inside / outside air division body 41B divided along the axial direction DRa are assembled with each other.
  • the inside / outside air casing 41 is divided into a first inside / outside air divider 41A and a second inside / outside air divider 41B with a predetermined surface extending in the axial direction DRa as a dividing surface.
  • the first inside / outside air divided body 41A constitutes a first suction divided body
  • the second inside / outside air divided body 41B constitutes a second suction divided body.
  • the inside / outside air casing 41 is divided into a first inside / outside air division body 41A and a second inside / outside air division body 41B with a plane intersecting with the door shafts 431a, 432a and the seal plate 44 as a division plane. ..
  • the separation cylinder 50 is composed of an assembled body in which a first cylinder divided body 50A and a second cylinder divided body 50B divided in the axial direction DRa are assembled with each other.
  • segmentation bodies are comprised in the part which at least one part overlaps with 41 A of 1st inside / outside air division
  • the second tubular divided body 50B is configured by a portion of the separation tubular 50 at least partially overlapping the second inside / outside air divided body 41B in the axial direction DRa.
  • At least a cylindrical portion (for example, the air lead-out portion 52) in which it is necessary to ensure coaxiality with the fan axis CL has a division surface set on a surface including the axis of the portion. ..
  • an arbitrary surface extending in the axial direction DRa can be set as a division surface.
  • the first inside / outside air divided body 41A and the first cylinder divided body 50A are configured as an integrally molded product, and the second inside / outside air divided body 41B and the second cylinder divided body 50B are integrated. It is configured as a molded product.
  • first inside / outside air split body 41A and the first tubular split body 50A are integrally molded by a molding technique in which the axial direction DRa is the die cutting direction, but in this case, an undercut occurs due to the seal plate 44. I will end up.
  • a direction (for example, the radial direction DRr) intersecting the axial direction DRa is set as a die cutting direction so that the seal plate 44 does not cause an undercut. It is integrally molded by molding technology.
  • the second inside / outside air divided body 41B and the second cylinder divided body 50B are formed such that a direction crossing the axial direction DRa (for example, the radial direction DRr) is a die-cutting direction so that the seal plate 44 does not cause an undercut. It is integrally molded by technology.
  • the inside / outside air casing 41 and the separation cylinder 50 are an integrally molded product of the first inside / outside air divided body 41A and the first cylinder divided body 50A, the second inside / outside air divided body 41B and the second divided cylinder.
  • the body 50B and the integrally molded product are assembled in one direction intersecting with the axial direction DRa.
  • an integrally molded product of the first inside / outside air split body 41A and the first tubular divided body 50A and an integrally molded product of the second inside / outside air split body 41B and the second tubular divided body 50B are the radial direction DRr. Is installed in.
  • the integrally formed product of the first inside / outside air divided body 41A and the first cylinder divided body 50A and the integrally formed product of the second inside / outside air divided body 41B and the second cylinder divided body 50B extend in the seal plate 44. It is assembled in the same direction as the direction.
  • the centrifugal blower 1 is assembled by inserting the integrally molded product of the inside / outside air casing 41 and the separation cylinder 50 and the connected body of the centrifugal fan 10 and the electric motor 20 inside the fan casing 30, and assembling each element. Is obtained by fastening with a fastening means (not shown).
  • the centrifugal blower 1 configured in this manner can set the air suction mode to the outside air mode for sucking the outside air, the inside air mode for sucking the inside air, and the inside / outside air mode for separating the outside air and the inside air at the same time. ..
  • the outside air mode is a mode in which only the outside air is introduced into the inside / outside air casing 41.
  • the centrifugal blower 1 is configured such that, in the outside air mode, the first opening / closing door 431 is displaced to a position where the outside air introduction port 411 is opened, and the second opening / closing door 432 is displaced to a position where the communication passage 414 is opened.
  • the inside air mode is a mode in which only the inside air is introduced inside the inside / outside air casing 41.
  • the first opening / closing door 431 is displaced to a position where the first inside air introducing port 412 is opened, and the second opening / closing door 432 is displaced to a position where the second inside air introducing port 413 is opened. It is configured.
  • the inside / outside air mode is a mode for introducing outside air and inside air into the inside / outside air casing 41.
  • the centrifugal blower 1 is configured such that, in the inside / outside air mode, the first opening / closing door 431 is displaced to a position where the outside air introducing port 411 is opened, and the second opening / closing door 432 is displaced to a position where the second inside air introducing port 413 is opened. Has been done.
  • the outside air introduced into the first introduction space 410A is sucked into the first blade passage 110A of the centrifugal fan 10 via the outside of the separation cylinder 50.
  • the outside air sucked into the first blade passage 110A is blown out into the first outlet passage 350A.
  • the inside air introduced into the second introduction space 410B is sucked into the second blade passage 110B of the centrifugal fan 10 through the inside of the separation cylinder 50.
  • the outside air sucked into the second blade passage 110B is blown out into the second outlet passage 350B.
  • the outside air flowing through the first outlet passage 350A and the inside air flowing through the second outlet passage 350B are introduced into the air conditioning unit from the fan casing 30 and adjusted to a desired temperature inside the air conditioning unit, and then have different outlets. Is blown into the passenger compartment.
  • the inside / outside air casing 41 and the separation cylinder 50 are the integrally molded product of the first inside / outside air divided body 41A and the first cylinder divided body 50A, the second inside / outside air divided body 41B, and the second divided cylinder body. It is composed of two parts such as a 50B integrally molded product. According to this, compared to the case where the inside / outside air casing 41 and the separation cylinder 50 are formed as separate bodies and each is formed by a plurality of divided bodies, the number of parts can be suppressed.
  • inside / outside air casing 41 and the separation cylinder 50 mutually connect the first inner / outside air divided body 41A and the first cylinder divided body 50A integrally molded with the second inside / outside air divided body 41B and the second cylinder divided body 50B. Since it can be obtained by assembling, the assembling work can be simplified.
  • the inside / outside air casing 41 and the separation cylinder 50 are formed by integrally molding the first inside / outside air divided body 41A and the first cylinder divided body 50A, and the second inside / outside air divided body 41B and the second cylinder divided body 50B. It is assembled in one direction intersecting the axial direction DRa.
  • the inside / outside air divided bodies 41A, 41B forming the inside / outside air casing 41 and the cylinder divided bodies 50A, 50B forming the separation cylinder 50 can be assembled in the same direction without rotating, Assembling work can be simplified.
  • the inside / outside air casing 41 and the separation cylinder 50 have a joint between the divided bodies as compared with the case where the inside / outside air casing 41 and the separation cylinder 50 are formed as separate bodies and each is formed by a plurality of divided bodies. There are less parts to become. This is effective in suppressing the mixing of the outside air with the inside air in the inside / outside air casing 41 and the separation cylinder 50.
  • inside / outside air casing 41 is divided into a first inside / outside air division body 41A and a second inside / outside air division body 41B with a plane intersecting with the door shafts 431a, 432a of each opening / closing door 431, 432 as a division plane. ..
  • each opening / closing door with respect to the inside / outside air casing 41. It becomes possible to assemble 431 and 432. That is, when the first inside / outside air split body 41A and the second inside / outside air split body 41B are assembled, the opening / closing doors 431 and 432 can be assembled at the same time. This greatly contributes to simplification of the assembly work.
  • the centrifugal blower 1 of the present embodiment is a one-suction type centrifugal blower capable of simultaneously separating the outside air and the inside air from one side in the axial direction DRa and sucking the air to the other side in the axial direction DRa. It is not necessary to provide a flow path for suction. For this reason, it is possible to make the physical size of the axial direction DRa smaller than that of a double-suction type centrifugal blower that sucks the outside air from one side of the axial direction DRa and sucks the inside air from the other side of the axial direction DRa.
  • the centrifugal fan 10 is provided with the separation plate 13, but the invention is not limited to this.
  • the centrifugal fan 10 may have a structure in which the separation plate 13 is not provided, for example.
  • the fan casing 30 is constituted by three divided bodies such as the upper divided body 30A, the lower divided body 30B, and the partition plate 36, but the fan casing 30 is not limited to this.
  • the fan casing 30 may be composed of, for example, three or more divided bodies. Further, a part of the fan casing 30 may be divided in the axial direction DRa.
  • the inside / outside air casing 41 having one outside air introduction port and two inside air introduction ports is exemplified, but the present invention is not limited to this.
  • the inside / outside air casing 41 for example, one having one outside air introduction port and one inside air introduction port may be adopted as long as it can separate and inhale the outside air and the inside air.
  • the opening / closing member 43 is exemplified by the first opening / closing door 431 and the second opening / closing door 432.
  • the opening / closing member 43 may be composed of, for example, three or more opening / closing doors.
  • the opening / closing door forming the opening / closing member 43 is not limited to the rotary door, but may be a cantilever type plate door, a slide door, or the like.
  • the air filter 42 is arranged with respect to the inside / outside air casing 41, but the present invention is not limited to this.
  • the air filter 42 may be arranged on the connecting member.
  • the integrally molded product of the first inside / outside air divided body 41A and the first cylinder divided body 50A and the second inside / outside air divided body 41B and the second cylinder divided body 50B are arranged in one direction intersecting with the axial direction DRa.
  • attached was illustrated, it is not limited to this.
  • an integrally molded product of the first inside / outside air divided body 41A and the first cylinder divided body 50A and the second inside / outside air divided body 41B and the second cylinder divided body 50B are arranged in the axial direction DRa. May be assembled to.
  • the fan casing 30 and the inside / outside air casing 41 are directly connected, but the present invention is not limited to this.
  • the fan casing 30 and the inside / outside air casing 41 may be connected by a connecting member having an air passage through which air flows.
  • the first cylinder divided body 50A and the second cylinder divided body 50B may be configured as an integral molding with the division body of the connecting member instead of the inside / outside air casing 41.
  • the connecting member constitutes a suction casing forming an air passage through which air introduced into the suction port 31 of the fan casing 30 passes.
  • centrifugal blower 1 according to the present disclosure is applied to an inside / outside air two-layer type vehicle air conditioner
  • the present invention is not limited to this.
  • the centrifugal blower 1 of the present disclosure can be applied to devices other than the two-layer indoor / outside air type air conditioner for vehicles.
  • the centrifugal blower includes a centrifugal fan, a fan casing, a separation cylinder, and a suction casing.
  • the suction casing is an assembled body in which a first suction divided body and a second suction divided body which are divided along the axial direction are assembled with each other.
  • the separation cylinder is an assembly body in which a first cylinder division body and a second cylinder division body that are divided in the axial direction are assembled with each other, and the first cylinder division body is configured as an integral molding with the first suction division body.
  • the second cylinder divided body is configured as an integrally molded product with the second suction divided body.
  • the suction casing and the separation cylinder of the centrifugal blower are the integrally formed product of the first cylinder divided body and the first suction divided body, and the integrally formed product of the second cylinder divided body and the second suction divided body. Are assembled in one direction intersecting the axial direction. According to this, the divided body of the suction casing and the divided body of the separation cylinder can be assembled in the same direction, so that the assembling work can be simplified.
  • the suction casing of the centrifugal blower is an inside / outside air casing in which at least one outside air inlet for sucking in the outside air of the vehicle compartment and at least one inside air inlet for sucking in the air in the vehicle interior are formed.
  • This inside / outside air casing allows the air sucked from one of the outside air introduction port and the inside air introduction port to flow inside the separation cylinder and separates the air sucked from the other introduction port of the outside air introduction port and the inside air introduction port. It is configured to be able to flow to the outside of the cylinder.
  • the inside / outside air casing and the separation cylinder are configured as separate bodies and each is configured as a plurality of split bodies, the number of joints between the split bodies is reduced. This is effective in suppressing the mixing of the outside air with the inside air in the inside / outside air casing and the separation cylinder.
  • an opening / closing member for opening / closing the outside air inlet and the inside air inlet is arranged in the inside / outside air casing.
  • the opening / closing member includes an opening / closing door rotatably supported with respect to the inside / outside air casing.
  • the inside / outside air casing is divided into a first suction division body and a second suction division body with a plane intersecting the door axis of the opening / closing door as a division plane.
  • the opening / closing door interposed between the first suction divided body and the second suction divided body, the first suction divided body and the second suction divided body are assembled in the direction intersecting the door axis.
  • the opening / closing door can be attached to the inside / outside air casing. That is, when the first suction division body and the second suction division body are assembled, the opening / closing door can be assembled at the same time. This greatly contributes to simplification of the assembly work.
  • a centrifugal fan of a centrifugal blower has a plurality of blades arranged around a fan axis and an inter-blade air passage formed between the plurality of blades and a first blade passage. And a separation plate for dividing the blade passage into the second blade passage arranged on the other side in the axial direction.
  • the separation cylinder is arranged so as to guide the outer air to the first blade passage and the inner air to the second blade passage.
  • a blowout air passage through which air blown from the centrifugal fan flows is formed on the outer side in the radial direction with respect to the centrifugal fan.
  • a partition plate for partitioning the second outlet passage is provided. According to this, for example, when different kinds of air having different temperatures and humidities are sucked in from the suction casing, the different kinds of air can be blown out in a divided state.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Devices For Blowing Cold Air, Devices For Blowing Warm Air, And Means For Preventing Water Condensation In Air Conditioning Units (AREA)
  • Air-Conditioning For Vehicles (AREA)

Abstract

A centrifugal blower (1) is provided with: a centrifugal fan (10); a fan casing (30); a separation tube (50) including a cylindrical part disposed on the inside of the centrifugal fan in a radial direction; and a suction casing (41) disposed on one side of the fan casing in an axial direction. The suction casing is an assembly obtained by assembling a first suction divided body (41A) and a second suction divided body (41B), which are divided in the axial direction, to one another. The separation tube is an assembly obtained by assembling a first tube divided body (50A) and a second tube divided body (50B), which are divided in the axial direction, to one another, wherein the first tube divided body is configured as an integrated molding with the first suction divided body, and the second tube divided body is configured as an integrated molding with the second suction divided body.

Description

遠心送風機Centrifugal blower 関連出願への相互参照Cross-reference to related application
　本出願は、２０１８年１１月８日に出願された日本特許出願番号２０１８－２１０８１５号に基づくもので、ここにその記載内容が参照により組み入れられる。 This application is based on Japanese Patent Application No. 2018-210815 filed on November 8, 2018, the content of which is incorporated herein by reference.
　本開示は、遠心送風機に関する。 The present disclosure relates to a centrifugal blower.
　従来、内外気二層式の車両用空調装置に適用される遠心送風機として、ファン軸心の軸方向の一方側から車室外空気および車室内空気を同時に吸い込むことが可能なものが知られている（例えば、特許文献１参照）。 Conventionally, as a centrifugal blower applied to an inside / outside air two-layer type air conditioner for a vehicle, there is known a centrifugal blower capable of simultaneously sucking air outside the vehicle compartment and air inside the vehicle cabin from one axial side of the fan axis. (For example, refer to Patent Document 1).
　この種の遠心送風機は、遠心ファンの径方向の内側に配置され、遠心ファンに対して車室外空気と車室内空気とを区分して流す分離筒を備えている。具体的には、特許文献１には、上述の遠心送風機として、分離筒が上下に分割されたものが開示されている。 This type of centrifugal blower is arranged inside the centrifugal fan in the radial direction, and is equipped with a separation tube that separates the air outside the vehicle interior and the air inside the vehicle into the centrifugal fan. Specifically, Patent Document 1 discloses, as the above-mentioned centrifugal blower, one in which a separation cylinder is divided into upper and lower parts.
特開２０１８－１０９３８３号公報JP, 2008-109383, A
　ところで、特許文献１記載の遠心送風機の如く、分離筒が上下に分割されていると、部品点数が増加してしまう。また、分離筒が他の部品とは別体で構成されている場合、組付作業が複雑化してしまう。これらは、遠心送風機のコストアップを招く要因となることから好ましくない。
　本開示は、部品点数を抑えつつ、組付作業の簡易化を図ることが可能な遠心送風機を提供することを目的とする。 By the way, if the separation cylinder is divided into upper and lower parts as in the centrifugal blower described in Patent Document 1, the number of parts will increase. Further, when the separation cylinder is formed separately from other parts, the assembling work becomes complicated. These are not preferable because they cause a cost increase of the centrifugal blower.
An object of the present disclosure is to provide a centrifugal blower capable of simplifying assembly work while suppressing the number of parts.
　本開示の１つの観点によれば、
　遠心送風機は、
　ファン軸心の軸方向の一方側から吸入した空気を径方向の外側に向けて吹き出す遠心ファンと、
　遠心ファンを収容し、遠心ファンに対し軸方向の一方側に遠心ファンへ吸い込まれる空気が通過する吸入口が形成されたファンケーシングと、
　遠心ファンの径方向の内側に配置される筒状の部位を含み、吸入口を通過する空気を筒状の部位の内側を流れる内側空気と筒状の部位の外側を流れる外側空気とに分離する分離筒と、
　ファンケーシングに対し軸方向の一方側に配置されて吸入口に導入する空気が通過する空気通路を形成する吸込ケーシングと、を備え、
　吸込ケーシングは、軸方向に沿って分割された第１吸込分割体と第２吸込分割体とを相互に組み付けた組付体であり、
　分離筒は、軸方向に分割された第１筒分割体と第２筒分割体とを相互に組み付けた組付体であり、第１筒分割体が第１吸込分割体と一体成形物として構成され、第２筒分割体が第２吸込分割体と一体成形物として構成されている。 According to one aspect of the disclosure,
Centrifugal blower,
A centrifugal fan that blows out air taken in from one side in the axial direction of the fan axis toward the outside in the radial direction,
A fan casing accommodating the centrifugal fan and having an inlet through which air sucked into the centrifugal fan passes is formed on one side in the axial direction with respect to the centrifugal fan;
It includes a tubular portion arranged inside the radial direction of the centrifugal fan, and separates air passing through the suction port into inner air flowing inside the tubular portion and outer air flowing outside the tubular portion. A separation tube,
A suction casing which is arranged on one side in the axial direction with respect to the fan casing and which forms an air passage through which air introduced into the suction port passes,
The suction casing is an assembly body in which a first suction division body and a second suction division body which are divided in the axial direction are assembled with each other,
The separation cylinder is an assembly body in which a first cylinder division body and a second cylinder division body that are divided in the axial direction are assembled to each other, and the first cylinder division body is configured as an integral molding with the first suction division body. The second cylinder divided body is configured as an integrally molded product with the second suction divided body.
　これによると、吸込ケーシングおよび分離筒を、第１筒分割体および第１吸込分割体の一体成形物と第２筒分割体および第２吸込分割体の一体成形物といった２つの部品で構成することができる。このような遠心送風機は、内外気ケーシングと分離筒とが別体で構成されるとともにそれぞれが複数の分割体で構成される場合に比べて、部品点数を抑制することができる。 According to this, the suction casing and the separation cylinder are composed of two parts such as the first cylinder divided body and the integrally formed product of the first suction divided body, and the second cylinder divided body and the second suction divided body. You can In such a centrifugal blower, the number of parts can be suppressed as compared with the case where the inside / outside air casing and the separation cylinder are formed as separate bodies and each is formed by a plurality of divided bodies.
　加えて、吸込ケーシングおよび分離筒は、第１筒分割体および第１吸込分割体の一体成形物と第２筒分割体および第２吸込分割体の一体成形物を相互に組み付けることで得られるので、組付作業の簡易化を図ることができる。 In addition, since the suction casing and the separation cylinder are obtained by mutually assembling the integrally formed product of the first cylinder divided body and the first suction divided body and the integrally formed product of the second cylinder divided body and the second suction divided body. The assembly work can be simplified.
　なお、各構成要素等に付された括弧付きの参照符号は、その構成要素等と後述する実施形態に記載の具体的な構成要素等との対応関係の一例を示すものである。 Note that the reference numerals in parentheses attached to the respective constituent elements and the like indicate an example of a correspondence relationship between the constituent elements and the like and specific constituent elements and the like described in the embodiments described later.
実施形態に係る遠心送風機の模式的な軸方向断面図である。It is a schematic axial direction sectional view of a centrifugal fan concerning an embodiment. 図１のＩＩ－ＩＩ断面図である。FIG. 2 is a sectional view taken along line II-II in FIG. 1. ファンケーシングの組付体を分解した状態を示す模式的な断面図である。It is a typical sectional view showing the state where the assembly of the fan casing was disassembled. ファンケーシングの組付状態を示す模式的な断面図である。It is a typical sectional view showing the assembled state of a fan casing. 内外気ケーシングおよび分離筒の組付体を分解した状態を示す模式的な断面図である。It is a typical sectional view showing the state where the assembly of the inside and outside air casing and the separation cylinder was disassembled. 内外気ケーシングおよび分離筒の組付状態を示す模式的な断面図である。FIG. 4 is a schematic cross-sectional view showing an assembled state of an inside / outside air casing and a separation cylinder. 実施形態に係る遠心送風機の模式的な分解図である。It is a typical exploded view of the centrifugal fan concerning an embodiment.
　以下、本開示の一実施形態について図１～図７を参照して説明する。本実施形態では、本開示の遠心送風機１を、車室外空気（以下、外気とも呼ぶ。）と車室内空気（以下、内気とも呼ぶ。）を区分して車室内へ吹き出すことが可能な内外気二層式の車両用空調装置に適用した例について説明する。 Hereinafter, an embodiment of the present disclosure will be described with reference to FIGS. 1 to 7. In the present embodiment, the centrifugal blower 1 according to the present disclosure is configured such that the outside air (hereinafter, also referred to as outside air) inside the vehicle compartment and the air (hereinafter, also referred to as inside air) inside the vehicle compartment can be blown out into the vehicle interior. An example applied to a two-layer type vehicle air conditioner will be described.
　遠心送風機１は、車室内の前部のインストルメントパネルの内側に配置されている。図１および図２に示すように、遠心送風機１は、遠心ファン１０、電動モータ２０、ファンケーシング３０、内外気切替部４０、分離筒５０を含んで構成されている。 Centrifugal blower 1 is located inside the instrument panel at the front of the passenger compartment. As shown in FIGS. 1 and 2, the centrifugal blower 1 includes a centrifugal fan 10, an electric motor 20, a fan casing 30, an inside / outside air switching unit 40, and a separation cylinder 50.
　遠心ファン１０は、ファン軸心ＣＬの軸方向ＤＲａの一方側から吸い込んだ空気を径方向ＤＲｒの外側に向けて吹き出すファンである。遠心ファン１０は、シロッコファンで構成されている。なお、遠心ファン１０は、シロッコファンに限らず、ラジアルファン、ターボファン等で構成されていてもよい。 The centrifugal fan 10 is a fan that blows out air sucked from one side of the axial center DRa of the fan axis CL toward the outside in the radial direction DRr. The centrifugal fan 10 is composed of a sirocco fan. The centrifugal fan 10 is not limited to a sirocco fan, but may be a radial fan, a turbo fan, or the like.
　ここで、軸方向ＤＲａは、ファン軸心ＣＬに沿って延びる方向である。また、径方向ＤＲｒは、ファン軸心ＣＬに直交するとともに、ファン軸心ＣＬを中心として放射状に延びる方向である。 Here, the axial direction DRa is a direction extending along the fan axis CL. The radial direction DRr is a direction that is orthogonal to the fan axis CL and extends radially around the fan axis CL.
　具体的には、遠心ファン１０は、複数のブレード１１、主板１２、および分離板１３を有している。複数のブレード１１は、ファン軸心ＣＬの周りに並んで配置されている。複数のブレード１１それぞれは、軸方向ＤＲａの一方側の端である一方側翼端１１１と、軸方向ＤＲａの他方側の端部である他方側翼端１１２とを有する。複数のブレード１１の相互間には、空気が流れる翼間空気通路１１０が形成される。 Specifically, the centrifugal fan 10 has a plurality of blades 11, a main plate 12, and a separation plate 13. The plurality of blades 11 are arranged side by side around the fan axis CL. Each of the plurality of blades 11 has a one-side blade tip 111 that is one end on the axial direction DRa and another blade tip 112 that is an end portion on the other side in the axial direction DRa. An inter-blade air passage 110 through which air flows is formed between the plurality of blades 11.
　主板１２は、ファン軸心ＣＬを中心とする円盤状の部材で構成されている。主板１２の中心部には、電動モータ２０の回転軸２２が相対回転不能に連結されている。主板１２は、径方向ＤＲｒの外側の部分に、複数のブレード１１の他方側翼端１１２が固定されている。 The main plate 12 is composed of a disk-shaped member centered on the fan axis CL. The rotating shaft 22 of the electric motor 20 is connected to the center of the main plate 12 so as not to rotate relative to it. The other blade tip 112 of the plurality of blades 11 is fixed to the outer portion of the main plate 12 in the radial direction DRr.
　分離板１３は、複数のブレード１１の相互間に流れる空気を、分離板１３に対する軸方向ＤＲａの一方側を流れる空気と、分離板１３に対する軸方向ＤＲａの他方側を流れる空気とに分離するための部材である。すなわち、分離板１３は、翼間空気通路１１０を第１翼通路１１０Ａと第１翼通路１１０Ａに対して軸方向ＤＲａの他方側に配置された第２翼通路１１０Ｂに分けるための部材である。具体的には、分離板１３は、複数のブレード１１それぞれと交差するとともに、ファン軸心ＣＬを中心とする環状の板状部材で構成されている。分離板１３は、ブレード１１と交差する部分で、ブレード１１に固定されている。 The separation plate 13 separates air flowing between the plurality of blades 11 into air flowing on one side of the separation plate 13 in the axial direction DRa and air flowing on the other side of the separation plate 13 in the axial direction DRa. It is a member of. That is, the separating plate 13 is a member for dividing the inter-blade air passage 110 into the first blade passage 110A and the second blade passage 110B arranged on the other side of the first blade passage 110A in the axial direction DRa. Specifically, the separation plate 13 is formed of an annular plate-shaped member that intersects with each of the plurality of blades 11 and has the fan axis CL as the center. The separating plate 13 is fixed to the blade 11 at a portion intersecting with the blade 11.
　遠心ファン１０は、複数のブレード１１、主板１２、および分離板１３が、射出成形等の成形技術によって、一体に成形された一体成形物として構成されている。なお、遠心ファン１０は、複数のブレード１１、主板１２、分離板１３の一部が別体で構成されていてもよい。 The centrifugal fan 10 is configured as an integrally molded product in which a plurality of blades 11, a main plate 12, and a separation plate 13 are integrally molded by a molding technique such as injection molding. In the centrifugal fan 10, the plurality of blades 11, the main plate 12, and a part of the separation plate 13 may be formed separately.
　電動モータ２０は、遠心ファン１０を回転させる電動式の駆動装置である。電動モータ２０は、動力を発生させる本体部２１、本体部２１の動力によって回転する回転軸２２、モータカバー２３を有している。 The electric motor 20 is an electric drive device that rotates the centrifugal fan 10. The electric motor 20 has a main body 21 that generates power, a rotating shaft 22 that rotates by the power of the main body 21, and a motor cover 23.
　回転軸２２は、本体部２１から軸方向ＤＲａの一方側に向かって延伸している。回転軸２２は、モータキャップ２４によって遠心ファン１０の主板１２に固定されている。これにより、回転軸２２が回転すると、遠心ファン１０が回転する。 The rotary shaft 22 extends from the main body 21 toward one side in the axial direction DRa. The rotating shaft 22 is fixed to the main plate 12 of the centrifugal fan 10 by a motor cap 24. As a result, when the rotary shaft 22 rotates, the centrifugal fan 10 rotates.
　モータカバー２３は、本体部２１における軸方向ＤＲａの他方側の部位を覆う部材である。モータカバー２３は、本体部２１を保持した状態で、ファンケーシング３０に固定されている。 The motor cover 23 is a member that covers a portion of the main body 21 on the other side in the axial direction DRa. The motor cover 23 is fixed to the fan casing 30 while holding the main body 21.
　ファンケーシング３０は、内部に遠心ファン１０を収容する筐体である。ファンケーシング３０には、遠心ファン１０へ吸い込まれる空気が通過する吸入口３１が形成されている。吸入口３１は、遠心ファン１０に対して軸方向ＤＲａの一方側に位置する部位に形成されている。また、ファンケーシング３０には、遠心ファン１０に対して軸方向ＤＲａの他方側に位置する部位に遠心ファン１０を挿通させるためのファン挿通穴３２が形成されている。 The fan casing 30 is a housing that houses the centrifugal fan 10 inside. The fan casing 30 is formed with an intake port 31 through which air sucked into the centrifugal fan 10 passes. The suction port 31 is formed at a portion located on one side of the centrifugal fan 10 in the axial direction DRa. Further, the fan casing 30 is provided with a fan insertion hole 32 for inserting the centrifugal fan 10 in a portion located on the other side of the centrifugal fan 10 in the axial direction DRa.
　ファンケーシング３０は、ベルマウス３３、取付枠３４、吹出通路形成部３５、および仕切板３６を有している。ベルマウス３３は、ファンケーシング３０において吸入口３１の周縁部を構成する。ベルマウス３３は、吸入口３１に空気が円滑に流れるように、断面形状が円弧状に湾曲している。 The fan casing 30 has a bell mouth 33, a mounting frame 34, an outlet passage forming portion 35, and a partition plate 36. The bell mouth 33 constitutes a peripheral portion of the suction port 31 in the fan casing 30. The bell mouth 33 has an arc-shaped cross section so that air can smoothly flow into the suction port 31.
　取付枠３４は、ファンケーシング３０に対して内外気切替部４０を取り付けるための矩形状の枠体である。取付枠３４は、ファンケーシング３０のうち遠心ファン１０に対して軸方向ＤＲａの一方側に位置する部位に設けられている。 The attachment frame 34 is a rectangular frame body for attaching the inside / outside air switching unit 40 to the fan casing 30. The mounting frame 34 is provided in a portion of the fan casing 30 that is located on one side of the centrifugal fan 10 in the axial direction DRa.
　吹出通路形成部３５は、遠心ファン１０に対する径方向ＤＲｒの外側に、遠心ファン１０から吹き出された空気が流れる吹出空気通路３５０を形成する部材である。吹出空気通路３５０は、遠心ファン１０の周りに渦巻き状に形成されている。すなわち、ファンケーシング３０は、遠心ファン１０の周りに渦巻き状に吹出空気通路３５０が形成されている。このようなファンケーシング３０は、スクロールケーシングとも呼ばれる。なお、ファンケーシング３０は、スクロールケーシング以外のケーシングで構成されていてもよい。 The blow-out passage forming portion 35 is a member that forms a blow-out air passage 350 through which air blown out from the centrifugal fan 10 flows, outside the centrifugal fan 10 in the radial direction DRr. The blowout air passage 350 is formed in a spiral shape around the centrifugal fan 10. That is, in the fan casing 30, the blowout air passage 350 is formed in a spiral shape around the centrifugal fan 10. Such a fan casing 30 is also called a scroll casing. The fan casing 30 may be formed of a casing other than the scroll casing.
　仕切板３６は、吹出通路形成部３５の内側に配置されている。仕切板３６は、ファン軸心ＣＬを中心とする環状の板状部材で構成されている。仕切板３６は、吹出空気通路３５０を軸方向ＤＲａの一方側の第１吹出通路３５０Ａと、第１吹出通路３５０Ａに対して軸方向ＤＲａの他方側に位置する第２吹出通路３５０Ｂとに仕切っている。 The partition plate 36 is arranged inside the outlet passage forming portion 35. The partition plate 36 is composed of an annular plate-shaped member centered on the fan axis CL. The partition plate 36 partitions the blowout air passage 350 into a first blowout passage 350A on one side in the axial direction DRa and a second blowout passage 350B located on the other side in the axial direction DRa with respect to the first blowout passage 350A. There is.
　仕切板３６は、径方向ＤＲｒの外側の部位が吹出通路形成部３５の内壁に固定されている。仕切板３６は、径方向ＤＲｒの内側の部位が、径方向ＤＲｒにおいて分離板１３の径方向ＤＲｒの外側の部位と対向するように配置されている。これにより、遠心ファン１０の第１翼通路１１０Ａからの空気が第１吹出通路３５０Ａに流入し、遠心ファン１０の第２翼通路１１０Ｂからの空気が第２吹出通路３５０Ｂに流入する。 The partition plate 36 has an outer portion in the radial direction DRr fixed to the inner wall of the blowout passage forming portion 35. The partition plate 36 is arranged such that a portion inside the radial direction DRr faces a portion outside the radial direction DRr of the separation plate 13 in the radial direction DRr. As a result, the air from the first blade passage 110A of the centrifugal fan 10 flows into the first outlet passage 350A, and the air from the second blade passage 110B of the centrifugal fan 10 flows into the second outlet passage 350B.
　図示しないが、吹出空気通路３５０の出口には、空調ユニットが接続されている。空調ユニットは、空気の通風路を形成する空調ケーシングの内部に、車室内へ吹き出す空気の温度を調整する冷却用熱交換器および加熱用熱交換器が収容されたユニットである。遠心ファン１０の回転によりファンケーシング３０から吹き出された空気は、空調ユニットの内部で所望の温度に調整された後、車室内に吹き出される。 Although not shown, an air conditioning unit is connected to the outlet of the blowout air passage 350. The air conditioning unit is a unit in which a cooling heat exchanger and a heating heat exchanger that adjust the temperature of the air blown into the vehicle compartment are housed inside an air conditioning casing that forms an air passage. The air blown out from the fan casing 30 by the rotation of the centrifugal fan 10 is adjusted to a desired temperature inside the air conditioning unit and then blown out into the passenger compartment.
　ファンケーシング３０は、ある程度の弾性を有し、強度的にも優れた樹脂（例えば、ポリプロピレン）にて形成されている。ファンケーシング３０は、樹脂成形上の都合、または、内蔵部品の組付上の都合等から、実際には、複数の分割体を組み付けた組付体で構成されている。なお、複数の分割体は、ネジやクリップ等の締結手段によって締結される。 The fan casing 30 is made of a resin (for example, polypropylene) that has some elasticity and is excellent in strength. The fan casing 30 is actually composed of an assembled body in which a plurality of divided bodies are assembled for convenience of resin molding, assembly of built-in parts, or the like. The plurality of divided bodies are fastened by fastening means such as screws and clips.
　具体的には、図３に示すように、ファンケーシング３０は、上方側分割体３０Ａ、下方側分割体３０Ｂ、仕切板３６といった３つの分割体で構成されている。上方側分割体３０Ａは、ファンケーシング３０において軸方向ＤＲａの一方側の部位を構成する分割体である。上方側分割体３０Ａには、吸入口３１が形成されるとともに、ベルマウス３３、取付枠３４等が設けられている。下方側分割体３０Ｂは、ファンケーシング３０において軸方向ＤＲａの他方側の部位を構成する分割体である。下方側分割体３０Ｂには、ファン挿通穴３２が形成されている。 Specifically, as shown in FIG. 3, the fan casing 30 is composed of three divided bodies such as an upper divided body 30A, a lower divided body 30B, and a partition plate 36. 30 A of upper side division bodies are division bodies which comprise the one part of the axial direction DRa in the fan casing 30. The upper divided body 30A is provided with a suction port 31, a bell mouth 33, a mounting frame 34, and the like. The lower side divided body 30B is a divided body that constitutes the other side portion of the fan casing 30 in the axial direction DRa. A fan insertion hole 32 is formed in the lower divided body 30B.
　図４に示すように、ファンケーシング３０は、上方側分割体３０Ａ、仕切板３６、下方側分割体３０Ｂが軸方向ＤＲａに積層された状態で、各分割体が相互に組み付けられることで構成されている。 As shown in FIG. 4, the fan casing 30 is configured by assembling the respective divided bodies in a state where the upper divided body 30A, the partition plate 36, and the lower divided body 30B are stacked in the axial direction DRa. ing.
　図１、図２に戻り、内外気切替部４０は、車両の内外から空気を切替導入するもので、ファンケーシング３０における取付枠３４に取り付けられている。内外気切替部４０は、外殻を構成する内外気ケーシング４１を有する。 Returning to FIG. 1 and FIG. 2, the inside / outside air switching unit 40 switches and introduces air from the inside and outside of the vehicle, and is attached to the mounting frame 34 in the fan casing 30. The inside / outside air switching unit 40 has an inside / outside air casing 41 forming an outer shell.
　内外気ケーシング４１は、ファンケーシング３０に対して軸方向ＤＲａの一方側に配置されている。内外気ケーシング４１、吸入口３１に導入する空気が通過する空気通路を形成する吸込ケーシングを構成する。内外気ケーシング４１は、ある程度の弾性を有し、強度的にも優れた樹脂（例えば、ポリプロピレン）にて形成されている。 The inside / outside air casing 41 is arranged on one side of the fan casing 30 in the axial direction DRa. The inside / outside air casing 41 and the suction casing forming an air passage through which the air introduced into the inlet 31 passes. The inside / outside air casing 41 has a certain degree of elasticity and is formed of a resin (for example, polypropylene) which is also excellent in strength.
　内外気ケーシング４１には、外気を導入する外気導入口４１１、内気を導入する第１内気導入口４１２および第２内気導入口４１３が形成されている。外気導入口４１１、第１内気導入口４１２、および第２内気導入口４１３は、ファン軸心ＣＬに直交する所定の方向に並ぶように形成されている。 The inside / outside air casing 41 is formed with an outside air inlet 411 for introducing outside air, a first inside air inlet 412 and a second inside air inlet 413 for introducing inside air. The outside air introduction port 411, the first inside air introduction port 412, and the second inside air introduction port 413 are formed to be aligned in a predetermined direction orthogonal to the fan axis CL.
　ここで、内外気ケーシング４１の内側には、外気導入口４１１からの外気または第１内気導入口４１２からの内気が導入される第１導入空間４１０Ａと第２内気導入口４１３からの内気が導入される第２導入空間４１０Ｂとが形成されている。また、内外気ケーシング４１には、第１導入空間４１０Ａと第２導入空間４１０Ｂとを連通させる連通路４１４が形成されている。 Here, inside the inside / outside air casing 41, the inside air from the outside air introduction port 411 or the inside air from the first inside air introduction port 412 into which the inside air is introduced is introduced from the first introduction space 410A and the second inside air introduction port 413. The second introduction space 410B is formed. Further, the inside / outside air casing 41 is formed with a communication passage 414 that connects the first introduction space 410A and the second introduction space 410B.
　内外気ケーシング４１の内側には、エアフィルタ４２が配置されている。エアフィルタ４２は、内外気ケーシング４１に導入された空気中の粉塵等を取り除く濾過材である。エアフィルタ４２は、空気透過性を有する材料で構成されている。エアフィルタ４２の材料としては、例えば、ＰＥＴ、ＰＰ等の樹脂繊維からなる不織布を採用することができる。 An air filter 42 is arranged inside the inside / outside air casing 41. The air filter 42 is a filtering material that removes dust and the like in the air introduced into the inside / outside air casing 41. The air filter 42 is made of a material having air permeability. As the material of the air filter 42, for example, a non-woven fabric made of resin fibers such as PET and PP can be used.
　内外気ケーシング４１には、エアフィルタ４２の空気流れ上流側に各導入口４１１、４１２、４１３を開閉する開閉部材４３が配置されている。開閉部材４３は、外気導入口４１１および第１内気導入口４１２を選択的に開閉する第１開閉ドア４３１と、第２内気導入口４１３および連通路４１４を選択的に開閉する第２開閉ドア４３２と、を有している。 The inside / outside air casing 41 is provided with an opening / closing member 43 for opening / closing the inlets 411, 412, 413 on the upstream side of the air flow of the air filter 42. The opening / closing member 43 includes a first opening / closing door 431 for selectively opening / closing the outside air introducing port 411 and the first inside air introducing port 412, and a second opening / closing door 432 for selectively opening / closing the second inside air introducing port 413 and the communication passage 414. And have.
　第１開閉ドア４３１は、第１ドア軸４３１ａを中心に回動するロータリドアで構成されている。また、第２開閉ドア４３２は、第１開閉ドア４３１と同様に、第２ドア軸４３２ａを中心に回動するロータリドアで構成されている。 The first opening / closing door 431 is a rotary door that rotates around the first door shaft 431a. Further, the second opening / closing door 432 is configured by a rotary door that rotates around the second door shaft 432a, like the first opening / closing door 431.
　内外気ケーシング４１の内側には、第２開閉ドア４３２が連通路４１４を閉鎖する位置に変位した際に、第２開閉ドア４３２と当接するシール板４４が設けられている。このシール板４４は、各ドア軸４３１ａ、４３２ａの軸心に沿って延びている。シール板４４は、エアフィルタ４２の空気吸入面に隣接して配置されている。シール板４４は、内外気ケーシング４１の内部空間を横断するように配置されている。 A seal plate 44 is provided inside the inside / outside air casing 41 so as to come into contact with the second opening / closing door 432 when the second opening / closing door 432 is displaced to a position that closes the communication passage 414. The seal plate 44 extends along the axis of the door shafts 431a and 432a. The seal plate 44 is arranged adjacent to the air suction surface of the air filter 42. The seal plate 44 is arranged so as to cross the internal space of the inside / outside air casing 41.
　このように構成される内外気切替部４０は、第１開閉ドア４３１で外気導入口４１１を開放し、且つ、第２開閉ドア４３２で第２内気導入口４１３を開放することで、内気を分離筒５０の内側に流すとともに、分離筒５０の内側に流すことが可能になっている。すなわち、内外気ケーシング４１は、第２内気導入口４１３から導入された内気を分離筒５０の内側に流すとともに、外気導入口４１１から導入された外気を分離筒５０の外側に流すことが可能に構成されている。 The inside / outside air switching unit 40 thus configured separates the inside air by opening the outside air introduction port 411 with the first opening / closing door 431 and opening the second inside air introduction port 413 with the second opening / closing door 432. It is possible to flow inside the tube 50 and inside the separation tube 50. That is, the inside / outside air casing 41 allows the inside air introduced from the second inside air introduction port 413 to flow inside the separation cylinder 50 and allows the outside air introduced from the outside air introduction port 411 to flow outside the separation cylinder 50. It is configured.
　分離筒５０は、軸方向ＤＲａに延伸する筒状の部材である。すなわち、分離筒５０は、軸方向ＤＲａに沿って延びるとともに、軸方向ＤＲａの両端に位置する部位が開口している。分離筒５０は、遠心ファン１０の径方向ＤＲｒの内側に配置される筒状の部位を含んでいる。分離筒５０は、ある程度の弾性を有し、強度的にも優れた樹脂（例えば、ポリプロピレン）にて形成されている。 The separation cylinder 50 is a cylindrical member extending in the axial direction DRa. That is, the separation cylinder 50 extends along the axial direction DRa, and the portions located at both ends in the axial direction DRa are open. The separation cylinder 50 includes a cylindrical portion arranged inside the centrifugal fan 10 in the radial direction DRr. The separation cylinder 50 is made of a resin (for example, polypropylene) having a certain degree of elasticity and excellent strength.
　分離筒５０は、吸入口３１を通過する空気が筒状の部位の内側を流れる内側空気と筒状の部位の外側を流れる外側空気とに分離されるように、少なくとも一部がファンケーシング３０の内側に位置付けられている。 At least a part of the separation cylinder 50 of the fan casing 30 is arranged so that the air passing through the suction port 31 is separated into inner air flowing inside the cylindrical portion and outer air flowing outside the cylindrical portion. It is located inside.
　分離筒５０は、内外気ケーシング４１の内側に位置する空気導入部位５１、ファンケーシング３０の内側に位置する空気導出部位５２、空気導入部位５１と空気導出部位５２とを接続する中間部位５３を有している。 The separation cylinder 50 has an air introduction part 51 located inside the inside / outside air casing 41, an air lead-out part 52 located inside the fan casing 30, and an intermediate part 53 connecting the air introduction part 51 and the air lead-out part 52. is doing.
　空気導入部位５１は、分離筒５０のうち内外気ケーシング４１に対して接続される部位である。空気導入部位５１は、内外気ケーシング４１の第２導入空間４１０Ｂに導入された空気が分離筒５０の内側に流入するように、その上流側端部が第２導入空間４１０Ｂに向けて開口している。具体的には、空気導入部位５１は、軸方向ＤＲａの一方側から見た際の外形が略矩形状に形成されている。空気導入部位５１は、ファンケーシング３０のベルマウス３３の略半分の領域を覆うことが可能な大きさを有している。 The air introduction portion 51 is a portion of the separation cylinder 50 that is connected to the inside / outside air casing 41. The air introduction portion 51 has an upstream end opening toward the second introduction space 410B so that the air introduced into the second introduction space 410B of the inside / outside air casing 41 flows into the inside of the separation cylinder 50. There is. Specifically, the air introduction portion 51 has a substantially rectangular outer shape when viewed from one side in the axial direction DRa. The air introduction portion 51 has a size capable of covering a substantially half region of the bell mouth 33 of the fan casing 30.
　空気導出部位５２および中間部位５３は、分離筒５０の内側を流れる内側空気および分離筒５０の外側を流れる外側空気を遠心ファン１０に導くための部位である。空気導出部位５２は、内側空気と外側空気とを複数のブレード１１の相互間へ導くために、軸方向ＤＲａの他方側ほど径方向ＤＲｒへ拡がった形状になっている。すなわち、空気導出部位５２は、軸方向ＤＲａの他方側に向かって直径が拡大している。 The air outlet part 52 and the intermediate part 53 are parts for guiding the inner air flowing inside the separation cylinder 50 and the outer air flowing outside the separation cylinder 50 to the centrifugal fan 10. The air outlet portion 52 has a shape that expands in the radial direction DRr toward the other side in the axial direction DRa in order to guide the inner air and the outer air between the plurality of blades 11. That is, the air outlet portion 52 has a diameter that increases toward the other side in the axial direction DRa.
　中間部位５３は、空気導出部位５２の中心軸がファン軸心ＣＬと一致するように、少なくとも一部が軸方向ＤＲａに対して傾斜した状態になっている。中間部位５３は、その内側の断面積が空気導入部位５１および空気導出部位５２に比べて小さくなっている。 At least a part of the intermediate portion 53 is inclined with respect to the axial direction DRa so that the central axis of the air outlet portion 52 coincides with the fan axis CL. The cross-sectional area inside the intermediate portion 53 is smaller than that of the air introduction portion 51 and the air outlet portion 52.
　分離筒５０は、空気導出部位５２における下流側の端部が、径方向ＤＲｒにおいて遠心ファン１０の分離板１３の径方向ＤＲｒの内側の部位と対向するように配置されている。これにより、分離筒５０の外側を流れる外側空気が遠心ファン１０の第１翼通路１１０Ａに流入し、分離筒５０の内側を流れる内側空気が遠心ファン１０の第２翼通路１１０Ｂに流入する。 The separation cylinder 50 is arranged such that the downstream end of the air outlet portion 52 faces the inner portion of the separation plate 13 of the centrifugal fan 10 in the radial direction DRr in the radial direction DRr. As a result, the outside air flowing outside the separation cylinder 50 flows into the first blade passage 110A of the centrifugal fan 10, and the inside air flowing inside the separation cylinder 50 flows into the second blade passage 110B of the centrifugal fan 10.
　ここで、上述したように分離筒５０は、空気導入部位５１、空気導出部位５２、中間部位５３が異なる形状であり、その構造が複雑化している。このため、分離筒５０を射出成形等の成形技術によって一体成形することが困難となる虞がある。 Here, as described above, the separation cylinder 50 has a different shape for the air introduction portion 51, the air discharge portion 52, and the intermediate portion 53, and the structure thereof is complicated. Therefore, it may be difficult to integrally form the separation cylinder 50 by a molding technique such as injection molding.
　また、内外気ケーシング４１は、その内側にシール板４４を形成したり、開閉部材４３を配置したりする必要があり、射出成形等の成形技術によって一体成形することが困難である。 Further, the inside / outside air casing 41 needs to have the seal plate 44 formed therein and the opening / closing member 43 disposed therein, and it is difficult to integrally form the casing 41 by a molding technique such as injection molding.
　これらに対して、内外気ケーシング４１および分離筒５０それぞれを複数の分割体で構成することが考えられるが、この場合、遠心送風機１の部品点数が増加するとともに、煩雑な組付作業が増加することになってしまう。 On the other hand, it is conceivable to configure each of the inside / outside air casing 41 and the separation cylinder 50 with a plurality of divided bodies, but in this case, the number of parts of the centrifugal blower 1 increases and the complicated assembling work increases. It will be decided.
　これらを考慮し、本実施形態では、内外気ケーシング４１および分離筒５０を複数の分割体の組付体としつつ、内外気ケーシング４１の分割体と分離筒５０の分割体とを一体成形物で構成している。 In consideration of these, in the present embodiment, the inside / outside air casing 41 and the separation cylinder 50 are an assembly of a plurality of divided bodies, and the divided body of the inside / outside air casing 41 and the division body of the separation cylinder 50 are integrally molded. I am configuring.
　図５に示すように、内外気ケーシング４１は、軸方向ＤＲａに沿って分割された第１内外気分割体４１Ａと第２内外気分割体４１Ｂとを相互に組み付けた組付体で構成されている。すなわち、内外気ケーシング４１は、軸方向ＤＲａに拡がる所定の面を分割面として第１内外気分割体４１Ａと第２内外気分割体４１Ｂとに分割されている。本実施形態では、第１内外気分割体４１Ａが第１吸込分割体を構成し、第２内外気分割体４１Ｂが第２吸込分割体を構成する。 As shown in FIG. 5, the inside / outside air casing 41 is configured by an assembly body in which a first inside / outside air division body 41A and a second inside / outside air division body 41B divided along the axial direction DRa are assembled with each other. There is. That is, the inside / outside air casing 41 is divided into a first inside / outside air divider 41A and a second inside / outside air divider 41B with a predetermined surface extending in the axial direction DRa as a dividing surface. In the present embodiment, the first inside / outside air divided body 41A constitutes a first suction divided body, and the second inside / outside air divided body 41B constitutes a second suction divided body.
　具体的には、内外気ケーシング４１は、各ドア軸４３１ａ、４３２ａおよびシール板４４と交差する面を分割面として第１内外気分割体４１Ａと第２内外気分割体４１Ｂとに分割されている。 Specifically, the inside / outside air casing 41 is divided into a first inside / outside air division body 41A and a second inside / outside air division body 41B with a plane intersecting with the door shafts 431a, 432a and the seal plate 44 as a division plane. ..
　また、分離筒５０は、軸方向ＤＲａに分割された第１筒分割体５０Ａと第２筒分割体５０Ｂとを相互に組み付けた組付体で構成されている。第１筒分割体５０Ａは、分離筒５０のうち軸方向ＤＲａにおいて少なくとも一部が第１内外気分割体４１Ａと重なり合う部位で構成されている。また、第２筒分割体５０Ｂは、分離筒５０のうち軸方向ＤＲａにおいて少なくとも一部が第２内外気分割体４１Ｂと重なり合う部位で構成されている。 Further, the separation cylinder 50 is composed of an assembled body in which a first cylinder divided body 50A and a second cylinder divided body 50B divided in the axial direction DRa are assembled with each other. 50 A of 1st cylinder division | segmentation bodies are comprised in the part which at least one part overlaps with 41 A of 1st inside / outside air division | segmentations in the axial direction DRa in the separation cylinder 50. As shown in FIG. In addition, the second tubular divided body 50B is configured by a portion of the separation tubular 50 at least partially overlapping the second inside / outside air divided body 41B in the axial direction DRa.
　分離筒５０のうち、少なくともファン軸心ＣＬと同軸度を確保する必要がある筒状の部位（例えば、空気導出部位５２）は、当該部位の軸心を含む面に分割面が設定されている。なお、分離筒５０のうちファン軸心ＣＬと同軸度を確保する必要がない部位については、軸方向ＤＲａに延びる任意の面を分割面として設定することができる。 In the separation cylinder 50, at least a cylindrical portion (for example, the air lead-out portion 52) in which it is necessary to ensure coaxiality with the fan axis CL has a division surface set on a surface including the axis of the portion. .. In addition, with respect to the portion of the separation cylinder 50 that does not need to ensure the coaxiality with the fan axis CL, an arbitrary surface extending in the axial direction DRa can be set as a division surface.
　内外気ケーシング４１および分離筒５０は、第１内外気分割体４１Ａと第１筒分割体５０Ａとが一体成形物として構成され、第２内外気分割体４１Ｂと第２筒分割体５０Ｂとが一体成形物として構成されている。 In the inside / outside air casing 41 and the separation cylinder 50, the first inside / outside air divided body 41A and the first cylinder divided body 50A are configured as an integrally molded product, and the second inside / outside air divided body 41B and the second cylinder divided body 50B are integrated. It is configured as a molded product.
　第１内外気分割体４１Ａおよび第１筒分割体５０Ａは、軸方向ＤＲａを型抜き方向とする成形技術によって一体に成形することが考えられるが、この場合、シール板４４によってアンダーカットが生じてしまう。 It is considered that the first inside / outside air split body 41A and the first tubular split body 50A are integrally molded by a molding technique in which the axial direction DRa is the die cutting direction, but in this case, an undercut occurs due to the seal plate 44. I will end up.
　このため、第１内外気分割体４１Ａおよび第１筒分割体５０Ａは、シール板４４によってアンダーカットが生じないように軸方向ＤＲａに交差する方向（例えば、径方向ＤＲｒ）を型抜き方向とする成形技術によって一体に成形されている。 For this reason, in the first inside / outside air split body 41A and the first tubular split body 50A, a direction (for example, the radial direction DRr) intersecting the axial direction DRa is set as a die cutting direction so that the seal plate 44 does not cause an undercut. It is integrally molded by molding technology.
　また、第２内外気分割体４１Ｂおよび第２筒分割体５０Ｂは、シール板４４によってアンダーカットが生じないように軸方向ＤＲａに交差する方向（例えば、径方向ＤＲｒ）を型抜き方向とする成形技術によって一体に成形されている。 In addition, the second inside / outside air divided body 41B and the second cylinder divided body 50B are formed such that a direction crossing the axial direction DRa (for example, the radial direction DRr) is a die-cutting direction so that the seal plate 44 does not cause an undercut. It is integrally molded by technology.
　図６に示すように、内外気ケーシング４１および分離筒５０は、第１内外気分割体４１Ａと第１筒分割体５０Ａとの一体成形物と、第２内外気分割体４１Ｂと第２筒分割体５０Ｂとの一体成形物とが軸方向ＤＲａに交差する一方向に組み付けられて構成されている。具体的には、第１内外気分割体４１Ａと第１筒分割体５０Ａとの一体成形物と、第２内外気分割体４１Ｂと第２筒分割体５０Ｂとの一体成形物とが径方向ＤＲｒに組み付けられている。すなわち、第１内外気分割体４１Ａと第１筒分割体５０Ａとの一体成形物と、第２内外気分割体４１Ｂと第２筒分割体５０Ｂとの一体成形物とがシール板４４の延在方向と同じ方向に組み付けられている。 As shown in FIG. 6, the inside / outside air casing 41 and the separation cylinder 50 are an integrally molded product of the first inside / outside air divided body 41A and the first cylinder divided body 50A, the second inside / outside air divided body 41B and the second divided cylinder. The body 50B and the integrally molded product are assembled in one direction intersecting with the axial direction DRa. Specifically, an integrally molded product of the first inside / outside air split body 41A and the first tubular divided body 50A and an integrally molded product of the second inside / outside air split body 41B and the second tubular divided body 50B are the radial direction DRr. Is installed in. That is, the integrally formed product of the first inside / outside air divided body 41A and the first cylinder divided body 50A and the integrally formed product of the second inside / outside air divided body 41B and the second cylinder divided body 50B extend in the seal plate 44. It is assembled in the same direction as the direction.
　遠心送風機１は、図７に示すように、ファンケーシング３０の内側に、内外気ケーシング４１および分離筒５０の一体成形物および遠心ファン１０および電動モータ２０の連結体を挿入して組み付け、各要素を図示しない締結手段で締結することで得られる。 As shown in FIG. 7, the centrifugal blower 1 is assembled by inserting the integrally molded product of the inside / outside air casing 41 and the separation cylinder 50 and the connected body of the centrifugal fan 10 and the electric motor 20 inside the fan casing 30, and assembling each element. Is obtained by fastening with a fastening means (not shown).
　このように構成される遠心送風機１は、空気の吸込モードとして、外気を吸い込む外気モード、内気を吸い込む内気モード、および外気と内気とを区分して同時に吸い込む内外気モードに設定可能になっている。 The centrifugal blower 1 configured in this manner can set the air suction mode to the outside air mode for sucking the outside air, the inside air mode for sucking the inside air, and the inside / outside air mode for separating the outside air and the inside air at the same time. ..
　外気モードは、内外気ケーシング４１の内側に外気だけを導入するモードである。遠心送風機１は、外気モード時に、外気導入口４１１を開放する位置に第１開閉ドア４３１が変位し、連通路４１４を開放する位置に第２開閉ドア４３２が変位するように構成されている。 The outside air mode is a mode in which only the outside air is introduced into the inside / outside air casing 41. The centrifugal blower 1 is configured such that, in the outside air mode, the first opening / closing door 431 is displaced to a position where the outside air introduction port 411 is opened, and the second opening / closing door 432 is displaced to a position where the communication passage 414 is opened.
　内気モードは、内外気ケーシング４１の内側に内気だけを導入するモードである。遠心送風機１は、内気モード時に、第１内気導入口４１２を開放する位置に第１開閉ドア４３１が変位し、第２内気導入口４１３を開放する位置に第２開閉ドア４３２が変位するように構成されている。 The inside air mode is a mode in which only the inside air is introduced inside the inside / outside air casing 41. In the centrifugal blower 1, in the inside air mode, the first opening / closing door 431 is displaced to a position where the first inside air introducing port 412 is opened, and the second opening / closing door 432 is displaced to a position where the second inside air introducing port 413 is opened. It is configured.
　内外気モードは、内外気ケーシング４１の内側に外気および内気を導入するモードである。遠心送風機１は、内外気モード時に、外気導入口４１１を開放する位置に第１開閉ドア４３１が変位し、第２内気導入口４１３を開放する位置に第２開閉ドア４３２が変位するように構成されている。 The inside / outside air mode is a mode for introducing outside air and inside air into the inside / outside air casing 41. The centrifugal blower 1 is configured such that, in the inside / outside air mode, the first opening / closing door 431 is displaced to a position where the outside air introducing port 411 is opened, and the second opening / closing door 432 is displaced to a position where the second inside air introducing port 413 is opened. Has been done.
　遠心送風機１は、内外気モード時に電動モータ２０によって遠心ファン１０が回転すると、図１に示すように、外気導入口４１１から第１導入空間４１０Ａに外気が導入され、第２内気導入口４１３から第２導入空間４１０Ｂに内気が導入される。 In the centrifugal blower 1, when the centrifugal fan 10 is rotated by the electric motor 20 in the inside / outside air mode, as shown in FIG. 1, outside air is introduced from the outside air introduction port 411 into the first introduction space 410A and the second inside air introduction port 413. Inside air is introduced into the second introduction space 410B.
　第１導入空間４１０Ａに導入された外気は、分離筒５０の外側を介して遠心ファン１０の第１翼通路１１０Ａに吸い込まれる。第１翼通路１１０Ａに吸い込まれた外気は、第１吹出通路３５０Ａに吹き出される。 The outside air introduced into the first introduction space 410A is sucked into the first blade passage 110A of the centrifugal fan 10 via the outside of the separation cylinder 50. The outside air sucked into the first blade passage 110A is blown out into the first outlet passage 350A.
　一方、第２導入空間４１０Ｂに導入された内気は、分離筒５０の内側を介して遠心ファン１０の第２翼通路１１０Ｂに吸い込まれる。第２翼通路１１０Ｂに吸い込まれた外気は、第２吹出通路３５０Ｂに吹き出される。 Meanwhile, the inside air introduced into the second introduction space 410B is sucked into the second blade passage 110B of the centrifugal fan 10 through the inside of the separation cylinder 50. The outside air sucked into the second blade passage 110B is blown out into the second outlet passage 350B.
　図示しないが、第１吹出通路３５０Ａを流れる外気および第２吹出通路３５０Ｂを流れる内気は、ファンケーシング３０から空調ユニットに導入され、空調ユニットの内部で所望の温度に調整された後、異なる吹出口から車室内へ吹出される。 Although not shown, the outside air flowing through the first outlet passage 350A and the inside air flowing through the second outlet passage 350B are introduced into the air conditioning unit from the fan casing 30 and adjusted to a desired temperature inside the air conditioning unit, and then have different outlets. Is blown into the passenger compartment.
　以上説明した遠心送風機１は、内外気ケーシング４１および分離筒５０が、第１内外気分割体４１Ａおよび第１筒分割体５０Ａの一体成形物と第２内外気分割体４１Ｂおよび第２筒分割体５０Ｂの一体成形物といった２つの部品で構成されている。これによれば、内外気ケーシング４１と分離筒５０とが別体で構成されるとともにそれぞれが複数の分割体で構成される場合に比べて、部品点数を抑制することができる。 In the centrifugal blower 1 described above, the inside / outside air casing 41 and the separation cylinder 50 are the integrally molded product of the first inside / outside air divided body 41A and the first cylinder divided body 50A, the second inside / outside air divided body 41B, and the second divided cylinder body. It is composed of two parts such as a 50B integrally molded product. According to this, compared to the case where the inside / outside air casing 41 and the separation cylinder 50 are formed as separate bodies and each is formed by a plurality of divided bodies, the number of parts can be suppressed.
　加えて、内外気ケーシング４１および分離筒５０は、第１内外気分割体４１Ａおよび第１筒分割体５０Ａの一体成形物と第２内外気分割体４１Ｂおよび第２筒分割体５０Ｂとを相互に組み付けることで得られるので、組付作業の簡易化を図ることができる。 In addition, the inside / outside air casing 41 and the separation cylinder 50 mutually connect the first inner / outside air divided body 41A and the first cylinder divided body 50A integrally molded with the second inside / outside air divided body 41B and the second cylinder divided body 50B. Since it can be obtained by assembling, the assembling work can be simplified.
　具体的には、内外気ケーシング４１および分離筒５０は、第１内外気分割体４１Ａおよび第１筒分割体５０Ａの一体成形物と第２内外気分割体４１Ｂおよび第２筒分割体５０Ｂとが軸方向ＤＲａに交差する一方向に組み付けられている。 Specifically, the inside / outside air casing 41 and the separation cylinder 50 are formed by integrally molding the first inside / outside air divided body 41A and the first cylinder divided body 50A, and the second inside / outside air divided body 41B and the second cylinder divided body 50B. It is assembled in one direction intersecting the axial direction DRa.
　これによると、内外気ケーシング４１を構成する各内外気分割体４１Ａ、４１Ｂと分離筒５０を構成する各筒分割体５０Ａ、５０Ｂとを、回転させることなく、同じ方向で組み付けることができるので、組付作業の簡易化を図ることができる。 According to this, since the inside / outside air divided bodies 41A, 41B forming the inside / outside air casing 41 and the cylinder divided bodies 50A, 50B forming the separation cylinder 50 can be assembled in the same direction without rotating, Assembling work can be simplified.
　また、内外気ケーシング４１および分離筒５０は、内外気ケーシング４１と分離筒５０とが別体で構成されるとともにそれぞれが複数の分割体で構成される場合に比べて、分割体同士の継ぎ目となる部位が少なくなる。このことは、内外気ケーシング４１および分離筒５０での外気と内気との混合を抑制する上で有効である。 In addition, the inside / outside air casing 41 and the separation cylinder 50 have a joint between the divided bodies as compared with the case where the inside / outside air casing 41 and the separation cylinder 50 are formed as separate bodies and each is formed by a plurality of divided bodies. There are less parts to become. This is effective in suppressing the mixing of the outside air with the inside air in the inside / outside air casing 41 and the separation cylinder 50.
　また、内外気ケーシング４１は、各開閉ドア４３１、４３２のドア軸４３１ａ、４３２ａと交差する面を分割面として、第１内外気分割体４１Ａと第２内外気分割体４１Ｂとに分割されている。 Further, the inside / outside air casing 41 is divided into a first inside / outside air division body 41A and a second inside / outside air division body 41B with a plane intersecting with the door shafts 431a, 432a of each opening / closing door 431, 432 as a division plane. ..
　これによると、各内外気分割体４１Ａ、４１Ｂを組み付ける際に、各内外気分割体４１Ａ、４１Ｂの間に各開閉ドア４３１、４３２を介在させることで、内外気ケーシング４１に対して各開閉ドア４３１、４３２を組み付けることが可能となる。すなわち、第１内外気分割体４１Ａと第２内外気分割体４１Ｂとを組み付ける際に各開閉ドア４３１、４３２の組み付けも同時に行うことが可能になる。このことは、組付作業の簡易化に大きく寄与する。 According to this, at the time of assembling the inside / outside air divided bodies 41A, 41B, by interposing the opening / closing doors 431, 432 between the inside / outside air divided bodies 41A, 41B, each opening / closing door with respect to the inside / outside air casing 41. It becomes possible to assemble 431 and 432. That is, when the first inside / outside air split body 41A and the second inside / outside air split body 41B are assembled, the opening / closing doors 431 and 432 can be assembled at the same time. This greatly contributes to simplification of the assembly work.
　ところで、本実施形態の遠心送風機１は、軸方向ＤＲａの片側から外気および内気を区分して同時に吸い込むことが可能な片吸込型の遠心送風機になっており、軸方向ＤＲａの他方側に空気を吸い込むための流路を設ける必要がない。このため、軸方向ＤＲａの一方側から外気を吸い込み、軸方向ＤＲａの他方側から内気を吸い込む両吸込型の遠心送風機に比べて、軸方向ＤＲａの体格を小型にすることができる。 By the way, the centrifugal blower 1 of the present embodiment is a one-suction type centrifugal blower capable of simultaneously separating the outside air and the inside air from one side in the axial direction DRa and sucking the air to the other side in the axial direction DRa. It is not necessary to provide a flow path for suction. For this reason, it is possible to make the physical size of the axial direction DRa smaller than that of a double-suction type centrifugal blower that sucks the outside air from one side of the axial direction DRa and sucks the inside air from the other side of the axial direction DRa.
　（他の実施形態）
　以上、本開示の代表的な実施形態について説明したが、本開示は、上述の実施形態に限定されることなく、例えば、以下のように種々変形可能である。 (Other embodiments)
The representative embodiment of the present disclosure has been described above, but the present disclosure is not limited to the above-described embodiment, and various modifications can be made as follows, for example.
　上述の実施形態では、遠心ファン１０に対して分離板１３が設けられているものを例示したが、これに限定されない。遠心ファン１０は、例えば、分離板１３が設けられていない構造になっていてもよい。 In the above-mentioned embodiment, the centrifugal fan 10 is provided with the separation plate 13, but the invention is not limited to this. The centrifugal fan 10 may have a structure in which the separation plate 13 is not provided, for example.
　上述の実施形態では、ファンケーシング３０として、上方側分割体３０Ａ、下方側分割体３０Ｂ、仕切板３６といった３つの分割体で構成されているものを例示したが、これに限定されない。ファンケーシング３０は、例えば、３つ以上の分割体で構成されていたりしてもよい。また、ファンケーシング３０は、一部が軸方向ＤＲａに分割されていてもよい。 In the above-described embodiment, the fan casing 30 is constituted by three divided bodies such as the upper divided body 30A, the lower divided body 30B, and the partition plate 36, but the fan casing 30 is not limited to this. The fan casing 30 may be composed of, for example, three or more divided bodies. Further, a part of the fan casing 30 may be divided in the axial direction DRa.
　上述の実施形態では、１つの外気導入口と２つの内気導入口が形成された内外気ケーシング４１を例示したが、これに限定されない。内外気ケーシング４１は、外気と内気とを区分して吸入することが可能であれば、例えば、１つの外気導入口と１つの内気導入口とが形成されたものが採用されていてもよい。 In the above-described embodiment, the inside / outside air casing 41 having one outside air introduction port and two inside air introduction ports is exemplified, but the present invention is not limited to this. As the inside / outside air casing 41, for example, one having one outside air introduction port and one inside air introduction port may be adopted as long as it can separate and inhale the outside air and the inside air.
　上述の実施形態では、開閉部材４３が第１開閉ドア４３１および第２開閉ドア４３２で構成されるものを例示したが、これに限定されない。開閉部材４３は、例えば、３つ以上の開閉ドアで構成されていてもよい。また、開閉部材４３を構成する開閉ドアは、ロータリドアに限らず、例えば、片持式の板ドア、スライドドア等で構成されていてもよい。 In the above embodiment, the opening / closing member 43 is exemplified by the first opening / closing door 431 and the second opening / closing door 432. However, the present invention is not limited to this. The opening / closing member 43 may be composed of, for example, three or more opening / closing doors. Further, the opening / closing door forming the opening / closing member 43 is not limited to the rotary door, but may be a cantilever type plate door, a slide door, or the like.
　上述の実施形態では、内外気ケーシング４１に対してエアフィルタ４２が配置されているものを例示したが、これに限定されない。例えば、ファンケーシング３０と内外気ケーシング４１との間に各ケーシング３０、４１を連結するための連結部材が設けられている場合、当該連結部材にエアフィルタ４２が配置されていてもよい。 In the above embodiment, the air filter 42 is arranged with respect to the inside / outside air casing 41, but the present invention is not limited to this. For example, when a connecting member for connecting the casings 30 and 41 is provided between the fan casing 30 and the inside / outside air casing 41, the air filter 42 may be arranged on the connecting member.
　上述の実施形態では、第１内外気分割体４１Ａおよび第１筒分割体５０Ａの一体成形物と第２内外気分割体４１Ｂおよび第２筒分割体５０Ｂとが軸方向ＤＲａに交差する一方向に組み付けられているものを例示したが、これに限定されない。内外気ケーシング４１および分離筒５０は、例えば、第１内外気分割体４１Ａおよび第１筒分割体５０Ａの一体成形物と第２内外気分割体４１Ｂおよび第２筒分割体５０Ｂとが軸方向ＤＲａに組み付けられていてもよい。 In the above-described embodiment, the integrally molded product of the first inside / outside air divided body 41A and the first cylinder divided body 50A and the second inside / outside air divided body 41B and the second cylinder divided body 50B are arranged in one direction intersecting with the axial direction DRa. Although the thing assembled | attached was illustrated, it is not limited to this. In the inside / outside air casing 41 and the separation cylinder 50, for example, an integrally molded product of the first inside / outside air divided body 41A and the first cylinder divided body 50A and the second inside / outside air divided body 41B and the second cylinder divided body 50B are arranged in the axial direction DRa. May be assembled to.
　上述の実施形態では、ファンケーシング３０と内外気ケーシング４１とが直に連結されているものを例示したが、これに限定されない。ファンケーシング３０および内外気ケーシング４１は、空気が流れる空気通路が形成された連結部材によって連結されていてもよい。この場合、分離筒５０は、第１筒分割体５０Ａおよび第２筒分割体５０Ｂは、内外気ケーシング４１ではなく、連結部材の分割体と一体成形物として構成されていてもよい。なお、本例では、連結部材がファンケーシング３０の吸入口３１に導入する空気が通過する空気通路を形成する吸込ケーシングを構成する。 In the above-described embodiment, the fan casing 30 and the inside / outside air casing 41 are directly connected, but the present invention is not limited to this. The fan casing 30 and the inside / outside air casing 41 may be connected by a connecting member having an air passage through which air flows. In this case, in the separation cylinder 50, the first cylinder divided body 50A and the second cylinder divided body 50B may be configured as an integral molding with the division body of the connecting member instead of the inside / outside air casing 41. In this example, the connecting member constitutes a suction casing forming an air passage through which air introduced into the suction port 31 of the fan casing 30 passes.
　上述の実施形態では、本開示の遠心送風機１を内外気二層式の車両用空調装置に適用した例について説明したが、これに限定されない。本開示の遠心送風機１は、内外気二層式の車両用空調装置以外の装置にも適用可能である。 In the above-described embodiment, an example in which the centrifugal blower 1 according to the present disclosure is applied to an inside / outside air two-layer type vehicle air conditioner has been described, but the present invention is not limited to this. The centrifugal blower 1 of the present disclosure can be applied to devices other than the two-layer indoor / outside air type air conditioner for vehicles.
　上述の実施形態において、実施形態を構成する要素は、特に必須であると明示した場合および原理的に明らかに必須であると考えられる場合等を除き、必ずしも必須のものではないことは言うまでもない。 Needless to say, in the above-described embodiments, the elements constituting the embodiments are not necessarily essential unless explicitly stated as being essential or when it is apparently in principle essential.
　上述の実施形態において、実施形態の構成要素の個数、数値、量、範囲等の数値が言及されている場合、特に必須であると明示した場合および原理的に明らかに特定の数に限定される場合等を除き、その特定の数に限定されない。 In the above-described embodiment, when numerical values such as the number, numerical value, amount, range, etc. of the constituent elements of the embodiment are referred to, when explicitly stated as being indispensable and in principle limited to a specific number It is not limited to the specific number except for cases.
　上述の実施形態において、構成要素等の形状、位置関係等に言及するときは、特に明示した場合および原理的に特定の形状、位置関係等に限定される場合等を除き、その形状、位置関係等に限定されない。 In the above-described embodiments, when referring to the shapes and positional relationships of constituent elements and the like, the shapes and positional relationships are excluded unless otherwise specified and in principle limited to specific shapes and positional relationships. It is not limited to the above.
　（まとめ）
　上述の実施形態の一部または全部で示された第１の観点によれば、遠心送風機は、遠心ファンと、ファンケーシングと、分離筒と、吸込ケーシングと、を備える。吸込ケーシングは、軸方向に沿って分割された第１吸込分割体と第２吸込分割体とを相互に組み付けた組付体である。分離筒は、軸方向に分割された第１筒分割体と第２筒分割体とを相互に組み付けた組付体であり、第１筒分割体が第１吸込分割体と一体成形物として構成され、第２筒分割体が第２吸込分割体と一体成形物として構成されている。 (Summary)
According to the first aspect shown in part or all of the above-described embodiment, the centrifugal blower includes a centrifugal fan, a fan casing, a separation cylinder, and a suction casing. The suction casing is an assembled body in which a first suction divided body and a second suction divided body which are divided along the axial direction are assembled with each other. The separation cylinder is an assembly body in which a first cylinder division body and a second cylinder division body that are divided in the axial direction are assembled with each other, and the first cylinder division body is configured as an integral molding with the first suction division body. The second cylinder divided body is configured as an integrally molded product with the second suction divided body.
　第２の観点によれば、遠心送風機の吸込ケーシングおよび分離筒は、第１筒分割体および第１吸込分割体の一体成形物と第２筒分割体および第２吸込分割体の一体成形物とが軸方向に交差する一方向に組み付けられている。これによれば、同じ方向で吸込ケーシングの分割体と分離筒の分割体とを組み付けることができるので、組付作業の簡易化を図ることができる。 According to the second aspect, the suction casing and the separation cylinder of the centrifugal blower are the integrally formed product of the first cylinder divided body and the first suction divided body, and the integrally formed product of the second cylinder divided body and the second suction divided body. Are assembled in one direction intersecting the axial direction. According to this, the divided body of the suction casing and the divided body of the separation cylinder can be assembled in the same direction, so that the assembling work can be simplified.
　第３の観点によれば、遠心送風機の吸込ケーシングは、車室外空気を吸い込むための少なくとも１つの外気導入口と車室内空気を吸い込むための少なくとも１つの内気導入口とが形成された内外気ケーシングである。この内外気ケーシングは、外気導入口および内気導入口の一方の導入口から吸い込まれた空気を分離筒の内側に流すとともに外気導入口および内気導入口の他方の導入口から吸い込まれた空気を分離筒の外側に流すことが可能に構成されている。 According to a third aspect, the suction casing of the centrifugal blower is an inside / outside air casing in which at least one outside air inlet for sucking in the outside air of the vehicle compartment and at least one inside air inlet for sucking in the air in the vehicle interior are formed. Is. This inside / outside air casing allows the air sucked from one of the outside air introduction port and the inside air introduction port to flow inside the separation cylinder and separates the air sucked from the other introduction port of the outside air introduction port and the inside air introduction port. It is configured to be able to flow to the outside of the cylinder.
　これによると、内外気ケーシングと分離筒とが別体で構成されるとともにそれぞれが複数の分割体で構成される場合に比べて、分割体同士の継ぎ目となる部位が少なくなる。このことは、内外気ケーシングおよび分離筒での外気と内気との混合を抑制する上で有効である。 According to this, compared to the case where the inside / outside air casing and the separation cylinder are configured as separate bodies and each is configured as a plurality of split bodies, the number of joints between the split bodies is reduced. This is effective in suppressing the mixing of the outside air with the inside air in the inside / outside air casing and the separation cylinder.
　第４の観点によれば、遠心送風機は、内外気ケーシングに、外気導入口および内気導入口を開閉する開閉部材が配置されている。開閉部材は、内外気ケーシングに対して回動自在に支持される開閉ドアを含んでいる。内外気ケーシングは、開閉ドアのドア軸と交差する面を分割面として、第１吸込分割体と第２吸込分割体とに分割されている。 According to a fourth aspect, in the centrifugal blower, an opening / closing member for opening / closing the outside air inlet and the inside air inlet is arranged in the inside / outside air casing. The opening / closing member includes an opening / closing door rotatably supported with respect to the inside / outside air casing. The inside / outside air casing is divided into a first suction division body and a second suction division body with a plane intersecting the door axis of the opening / closing door as a division plane.
　これによると、第１吸込分割体と第２吸込分割体との間に開閉ドアを介在させた状態で、第１吸込分割体と第２吸込分割体とをドア軸を交差する方向に組み付けることで、内外気ケーシングに対して開閉ドアを組み付けることが可能となる。すなわち、第１吸込分割体と第２吸込分割体とを組み付ける際に開閉ドアの組み付けも同時に行うことが可能になる。このことは、組付作業の簡易化に大きく寄与する。 According to this, with the opening / closing door interposed between the first suction divided body and the second suction divided body, the first suction divided body and the second suction divided body are assembled in the direction intersecting the door axis. Thus, the opening / closing door can be attached to the inside / outside air casing. That is, when the first suction division body and the second suction division body are assembled, the opening / closing door can be assembled at the same time. This greatly contributes to simplification of the assembly work.
　第５の観点によれば、遠心送風機の遠心ファンは、ファン軸心の周りに配置された複数のブレードと複数のブレードの相互間に形成される翼間空気通路を第１翼通路と第１翼通路に対し軸方向の他方側に配置された第２翼通路に分ける分離板とを有する。分離筒は、外側空気を第１翼通路に導きつつ内側空気を第２翼通路に導くことが可能に配置されている。ファンケーシングには、遠心ファンに対する径方向の外側に遠心ファンから吹き出された空気が流れる吹出空気通路が形成されている。そして、ファンケーシングには、吹出空気通路を第１翼通路からの空気が流入する第１吹出通路と第１吹出通路に対し軸方向の他方側に配置され第２翼通路からの空気が流入する第２吹出通路とに仕切る仕切板が設けられている。これによると、例えば、吸込ケーシングから温度や湿度が異なる異種の空気を吸い込んだ場合、当該異種の空気を区分した状態で吹き出すことができる。 According to a fifth aspect, a centrifugal fan of a centrifugal blower has a plurality of blades arranged around a fan axis and an inter-blade air passage formed between the plurality of blades and a first blade passage. And a separation plate for dividing the blade passage into the second blade passage arranged on the other side in the axial direction. The separation cylinder is arranged so as to guide the outer air to the first blade passage and the inner air to the second blade passage. In the fan casing, a blowout air passage through which air blown from the centrifugal fan flows is formed on the outer side in the radial direction with respect to the centrifugal fan. Then, in the fan casing, the first air outlet passage into which the air from the first air passage passes through the air outlet passage, and the air from the second air passage disposed on the other side in the axial direction with respect to the first air outlet passage. A partition plate for partitioning the second outlet passage is provided. According to this, for example, when different kinds of air having different temperatures and humidities are sucked in from the suction casing, the different kinds of air can be blown out in a divided state.

Claims (5)

  1. 　遠心送風機であって、
    　ファン軸心（ＣＬ）の軸方向（ＤＲａ）の一方側から吸入した空気を径方向（ＤＲｒ）の外側に向けて吹き出す遠心ファン（１０）と、
    　前記遠心ファンを収容し、前記遠心ファンに対し前記軸方向の一方側に前記遠心ファンへ吸い込まれる空気が通過する吸入口（３１）が形成されたファンケーシング（３０）と、
    　前記遠心ファンの前記径方向の内側に配置される筒状の部位を含み、前記吸入口を通過する空気を前記筒状の部位の内側を流れる内側空気と前記筒状の部位の外側を流れる外側空気とに分離する分離筒（５０）と、
    　前記ファンケーシングに対し前記軸方向の一方側に配置されて前記吸入口に導入する空気が通過する空気通路を形成する吸込ケーシング（４１）と、を備え、
    　前記吸込ケーシングは、前記軸方向に沿って分割された第１吸込分割体（４１Ａ）と第２吸込分割体（４１Ｂ）とを相互に組み付けた組付体であり、
    　前記分離筒は、前記軸方向に分割された第１筒分割体（５０Ａ）と第２筒分割体（５０Ｂ）とを相互に組み付けた組付体であり、前記第１筒分割体が前記第１吸込分割体と一体成形物として構成され、前記第２筒分割体が前記第２吸込分割体と一体成形物として構成されている遠心送風機。     A centrifugal blower,
    A centrifugal fan (10) that blows out air taken in from one side of the axial direction (DRa) of the fan axis (CL) toward the outside in the radial direction (DRr);
    A fan casing (30) for accommodating the centrifugal fan and having an inlet (31) formed on one side in the axial direction with respect to the centrifugal fan through which air sucked into the centrifugal fan passes;
    Inner air that includes a tubular portion that is disposed inside the radial direction of the centrifugal fan, flows air that passes through the suction port inside the tubular portion, and outside that flows outside the tubular portion. A separation tube (50) for separating into air,
    A suction casing (41) arranged on one side in the axial direction with respect to the fan casing and forming an air passage through which air introduced into the suction port passes,
    The suction casing is an assembly body in which a first suction division body (41A) and a second suction division body (41B) divided along the axial direction are assembled with each other,
    The separation cylinder is an assembly body in which a first cylinder division body (50A) and a second cylinder division body (50B) divided in the axial direction are assembled with each other, and the first cylinder division body is the first cylinder division body. 1. A centrifugal blower configured as an integrally molded product with one suction divided body, and the second tubular divided body configured as an integrally molded product with the second suction divided body.
  2. 　前記吸込ケーシングおよび前記分離筒は、前記第１筒分割体および前記第１吸込分割体の一体成形物と前記第２筒分割体および前記第２吸込分割体の一体成形物とが前記軸方向に交差する一方向に組み付けられている請求項１に記載の遠心送風機。 In the suction casing and the separation cylinder, the first cylinder divided body and the first suction divided body are integrally formed, and the second cylinder divided body and the second suction divided body are integrally formed in the axial direction. The centrifugal blower according to claim 1, wherein the centrifugal blower is assembled in one direction intersecting with each other.
  3. 　前記吸込ケーシングは、車室外空気を吸い込むための少なくとも１つの外気導入口（４１１）と車室内空気を吸い込むための少なくとも１つの内気導入口（４１２、４１３）とが形成され、前記外気導入口および前記内気導入口の一方の導入口から吸い込まれた空気を前記分離筒の内側に流すとともに前記外気導入口および前記内気導入口の他方の導入口から吸い込まれた空気を前記分離筒の外側に流すことが可能に構成された内外気ケーシング（４１）である請求項１または２に記載の遠心送風機。 The suction casing is formed with at least one outside air inlet (411) for sucking air outside the vehicle compartment and at least one inside air inlet (412, 413) for sucking air inside the vehicle compartment. The air sucked from one of the inside air inlets is flown to the inside of the separation cylinder, and the air sucked from the other of the outside air introduction port and the inside air introduction port is flowed to the outside of the separation cylinder. The centrifugal blower according to claim 1 or 2, wherein the centrifugal blower is an inside / outside air casing (41) configured to be capable.
  4. 　前記内外気ケーシングには、前記外気導入口および前記内気導入口を開閉する開閉部材（４３）が配置されており、
    　前記開閉部材は、前記内外気ケーシングに対して回動自在に支持される開閉ドア（４３１、４３２）を含み、
    　前記内外気ケーシングは、前記開閉ドアのドア軸と交差する面を分割面として、前記第１吸込分割体と前記第２吸込分割体とに分割されている請求項３に記載の遠心送風機。     An opening / closing member (43) for opening and closing the outside air introduction port and the inside air introduction port is arranged in the inside and outside air casing,
    The opening / closing member includes opening / closing doors (431, 432) rotatably supported with respect to the inside / outside air casing,
    The centrifugal blower according to claim 3, wherein the inside / outside air casing is divided into the first suction divided body and the second suction divided body with a surface intersecting the door axis of the opening / closing door as a division surface.
  5. 　前記遠心ファンは、前記ファン軸心の周りに配置された複数のブレード（１１）と前記複数のブレードの相互間に形成される翼間空気通路（１１０）を第１翼通路（１１０Ａ）と前記第１翼通路に対し前記軸方向の他方側に配置された第２翼通路（１１０Ｂ）に分ける分離板（１２）とを有し、
    　前記分離筒は、前記外側空気を前記第１翼通路に導きつつ前記内側空気を前記第２翼通路に導くことが可能に配置され、
    　前記ファンケーシングには、前記遠心ファンに対する前記径方向の外側に前記遠心ファンから吹き出された空気が流れる吹出空気通路（３５０）が形成され、前記吹出空気通路を前記第１翼通路からの空気が流入する第１吹出通路（３５０Ａ）と前記第１吹出通路に対し前記軸方向の他方側に配置され前記第２翼通路からの空気が流入する第２吹出通路（３５０Ｂ）とに仕切る仕切板（３６）が設けられている請求項１ないし４のいずれか１つに記載の遠心送風機。     The centrifugal fan includes a plurality of blades (11) arranged around the fan axis and an inter-blade air passage (110) formed between the plurality of blades and a first blade passage (110A). A separation plate (12) for dividing into a second blade passage (110B) arranged on the other side in the axial direction with respect to the first blade passage,
    The separation cylinder is disposed so as to guide the inner air to the second blade passage while guiding the outer air to the first blade passage,
    A blowout air passage (350) through which air blown out from the centrifugal fan flows is formed in the fan casing radially outside of the centrifugal fan, and air from the first blade passage is formed in the blowout air passage. A partition plate (which divides into a first inflow passage (350A) that flows in and a second outflow passage (350B) that is arranged on the other side in the axial direction with respect to the first air passage and into which air from the second blade passage flows (350B). 36) The centrifugal blower according to any one of claims 1 to 4, further comprising:
PCT/JP2019/037980 2018-11-08 2019-09-26 Centrifugal blower WO2020095563A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2018-210815 2018-11-08
JP2018210815A JP2020076382A (en) 2018-11-08 2018-11-08 Centrifugal blower

Publications (1)

Publication Number Publication Date
WO2020095563A1 true WO2020095563A1 (en) 2020-05-14

Family

ID=70610955

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2019/037980 WO2020095563A1 (en) 2018-11-08 2019-09-26 Centrifugal blower

Country Status (2)

Country Link
JP (1) JP2020076382A (en)
WO (1) WO2020095563A1 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS3210155Y1 (en) * 1956-02-10 1957-09-02
JPS5620098U (en) * 1979-07-21 1981-02-21
JP2004132342A (en) * 2002-10-15 2004-04-30 Denso Corp Centrifugal blower
WO2018074339A1 (en) * 2016-10-18 2018-04-26 株式会社ヴァレオジャパン Centrifugal blower

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS3210155Y1 (en) * 1956-02-10 1957-09-02
JPS5620098U (en) * 1979-07-21 1981-02-21
JP2004132342A (en) * 2002-10-15 2004-04-30 Denso Corp Centrifugal blower
WO2018074339A1 (en) * 2016-10-18 2018-04-26 株式会社ヴァレオジャパン Centrifugal blower

Also Published As

Publication number Publication date
JP2020076382A (en) 2020-05-21

Similar Documents

Publication Publication Date Title
JP3843928B2 (en) Centrifugal blower
WO2020230563A1 (en) Centrifugal blower
JP2019044739A (en) Centrifugal blower for air conditioner for vehicle
JP7003902B2 (en) Centrifugal fan, centrifugal fan
WO2020095563A1 (en) Centrifugal blower
US20220282735A1 (en) Blower
WO2021111878A1 (en) Centrifugal blower
US11852362B2 (en) Blower
US11852163B2 (en) Single suction centrifugal blower
CN113286715B (en) Centrifugal blower
JP2006177289A (en) Blower unit
JP7052691B2 (en) Centrifugal blower, manufacturing method of centrifugal blower
CN113056613B (en) Centrifugal blower
JP7358946B2 (en) Blower and filter equipment
WO2021079646A1 (en) Blower
WO2021187175A1 (en) Centrifugal blower
WO2021085086A1 (en) Blower
WO2021090648A1 (en) Blower
JP7024743B2 (en) Centrifugal blower

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 19881126

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 19881126

Country of ref document: EP

Kind code of ref document: A1