US20190170159A1 - Blower device and vehicular air-conditioning device - Google Patents

Blower device and vehicular air-conditioning device Download PDF

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Publication number
US20190170159A1
US20190170159A1 US16/092,641 US201716092641A US2019170159A1 US 20190170159 A1 US20190170159 A1 US 20190170159A1 US 201716092641 A US201716092641 A US 201716092641A US 2019170159 A1 US2019170159 A1 US 2019170159A1
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US
United States
Prior art keywords
air
motor
chamber
flow path
blower device
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US16/092,641
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English (en)
Inventor
Satoshi Kominami
Tomoki Nakamura
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Heavy Industries Thermal Systems Ltd
Original Assignee
Mitsubishi Heavy Industries Thermal Systems Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsubishi Heavy Industries Thermal Systems Ltd filed Critical Mitsubishi Heavy Industries Thermal Systems Ltd
Assigned to MITSUBISHI HEAVY INDUSTRIES THERMAL SYSTEMS, LTD. reassignment MITSUBISHI HEAVY INDUSTRIES THERMAL SYSTEMS, LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: KOMINAMI, SATOSHI, NAKAMURA, TOMOKI
Publication of US20190170159A1 publication Critical patent/US20190170159A1/en
Abandoned legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/58—Cooling; Heating; Diminishing heat transfer
    • F04D29/5806—Cooling the drive system
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00457—Ventilation unit, e.g. combined with a radiator
    • B60H1/00471—The ventilator being of the radial type, i.e. with radial expulsion of the air
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/32—Cooling 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
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
    • F04D25/082—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation the unit having provision for cooling the motor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
    • F04D29/4226—Fan casings
    • 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
    • F04D29/58—Cooling; Heating; Diminishing heat transfer
    • 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
    • F04D29/58—Cooling; Heating; Diminishing heat transfer
    • F04D29/582—Cooling; Heating; Diminishing heat transfer specially adapted for elastic fluid pumps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00007—Combined heating, ventilating, or cooling devices
    • B60H1/00021—Air flow details of HVAC devices
    • B60H1/00035—Air flow details of HVAC devices for sending an air stream of uniform temperature into the passenger compartment
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/58—Cooling; Heating; Diminishing heat transfer
    • F04D29/582—Cooling; Heating; Diminishing heat transfer specially adapted for elastic fluid pumps
    • F04D29/5826—Cooling at least part of the working fluid in a heat exchanger

Definitions

  • the present invention relates to a blower device and a vehicular air-conditioning device.
  • blower device of a vehicular air-conditioning device or the like which is configured by a casing, a scroll fan, and a motor for rotationally driving the scroll fan.
  • a blower device takes the air into a center portion of the scroll fan from an air intake port formed in the casing by means of the scroll fan rotationally driven by the motor.
  • the intake air is blown by the rotating scroll fan toward a radially outer portion thereof, passes through a scroll flow path formed in the radially outer portion of the scroll fan, and then is discharged through a downstream side discharge nozzle.
  • blower device What is carried out in such a blower device is to take a part of the air discharged from the scroll fan into a chamber and supply the air to a motor through a duct that opens into the chamber at one end so as to cool the motor for rotationally driving the scroll fan.
  • the air taken into the casing through the air intake port may contain water in some cases.
  • the water may possibly adversely affect an operation of the motor.
  • Patent Document 1 describes a configuration that a step portion is formed at an air intake port for taking the air into a chamber from a discharge nozzle so as to prevent intrusion of water drop into the chamber.
  • an object of the invention is to provide a blower device and a vehicular air-conditioning device which can more reliably prevent water drop from reaching a motor.
  • a blower device and a vehicular air-conditioning device according to the present invention adopt the following means.
  • a blower device includes: a casing including an air intake port, an air discharge port, and a flow path portion communicating between the air intake port and the air discharge port; a fan provided in the casing to take in air from the air intake port and generate an air flow to the air discharge port through the flow path portion; a motor rotationally driving the fan; and a motor cooling unit cooling the motor, the motor cooling unit including a chamber taking therein a part of the air through the flow path portion, and a duct having an opening portion that opens into the chamber and supplying, to the motor, the air in the chamber taken in through the opening portion, a ceiling portion of the chamber having an inclined surface that is inclined downward from above.
  • the air taken into the casing through the air intake port by the fan rotationally driven by the motor is sent out to a flow path portion by the fan rotationally driven by the motor.
  • a part of the air flowing in the flow path portion is taken into the chamber and supplied to the motor through a duct from an opening portion so as to cool the motor.
  • the inclined surface be formed at least vertically above the opening portion.
  • the inclined surface formed vertically above at least the opening portion can prevent water drop from falling to the opening portion with higher reliability.
  • the inclined surface be formed into an umbrella shape that is gradually inclined downward to a radially outer portion from a central portion of the ceiling portion.
  • a vehicular air-conditioning device includes the above-described blower device.
  • the blower device has the inclined surface at the ceiling portion, it is possible to suppress intrusion of water drop into the motor cooling unit and prevent it from reaching the motor.
  • blower device and the vehicular air-conditioning device of the present invention it is possible to more reliably prevent water drop from reaching the motor.
  • FIG. 1 is a plan view illustrating an internal configuration of a blower device according to the present embodiment.
  • FIG. 2 is a bottom view illustrating the blower device.
  • FIG. 3 is a cross-sectional view taken along A-A line of FIG. 2 , illustrating a configuration of a fan unit of the blower device.
  • FIG. 4 is a vertical cross-sectional view illustrating a chamber of the blower device.
  • FIG. 5 is a vertical cross-sectional view illustrating a chamber of a blower device according to a modification of the present embodiment.
  • FIG. 1 is a plan view illustrating an internal configuration of a blower device according to the present embodiment.
  • FIG. 2 is a bottom view illustrating the blower device.
  • FIG. 3 is a cross-sectional view taken along A-A line of FIG. 2 , illustrating a configuration of a fan unit of the blower device.
  • FIG. 4 is a cross-sectional plan view illustrating a chamber of the blower device.
  • FIG. 5 is a vertical cross-sectional view illustrating the chamber.
  • a blower device 10 constituting the vehicular air-conditioning device includes a hollow casing 11 , a fan unit 20 provided on a first end 11 a side of the casing 11 so as to generate wind, a discharge nozzle unit 30 discharging the wind generated by the fan unit 20 , a heat exchanger housing unit 40 provided on a second end lib side of the casing 11 so as to house an evaporator 41 , and a motor cooling unit 50 .
  • the casing 11 has a two-part configuration with upper and lower portions, in which a bottomed, upper casing 11 A that opens upward and a bottomed, lower casing 11 b that opens downward are combined and connected together in the vertical direction.
  • the fan unit 20 includes a motor 21 (see FIG. 3 ), a scroll fan 22 provided in the casing 11 and rotationally driven by the motor 21 , an air intake port 23 (see FIG. 3 ) formed in the upper casing 11 A, and a scroll flow path portion 24 formed in a radially outer portion of the scroll fan 22 in the casing 11 .
  • the motor 21 includes a motor main body 21 a that is held in a manner of being fit into a motor holding opening 13 formed at a bottom plate portion 11 c of the lower casing 11 B, and a motor shaft 21 b that is axially, rotationally driven by the motor main body 21 a .
  • the motor 21 is provided such that the motor shaft 21 b protrudes upward from the bottom plate portion 11 c of the lower casing 11 B.
  • the scroll fan 22 is provided above the bottom plate portion 11 c of the lower casing 11 B while being integrally connected to the motor shaft 21 b .
  • the scroll fan 22 has a cylindrical shape with the motor shaft 21 b as its center, and includes a plurality of blades 22 a provided in an outer circumferential portion thereof at intervals in the circumferential direction.
  • This scroll fan 22 is rotationally driven together with the motor shaft 21 b by the motor 21 , to take the outside air from an air intake port 23 formed in the upper casing 11 A into a radially inner portion of the scroll fan 22 and also, send the intake air to a radially outer portion of the scroll fan 22 .
  • the scroll flow path portion 24 is formed continuously in the circumferential direction at the radially outer portion of the scroll fan 22 .
  • the scroll flow path portion 24 gradually increases a cross-sectional area of its flow path toward a downstream side in the air flow direction along the circumferential direction.
  • the discharge nozzle unit 30 includes a discharge flow path portion 31 formed in the casing 11 , extending straight in the tangential direction from a downstream end of the scroll flow path portion 24 of the fan unit 20 and guides the air sent from the scroll flow path portion 24 to the downstream side through this discharge flow path portion 31 .
  • the heat exchanger housing unit 40 includes an evaporator 41 housed in the casing 11 .
  • the evaporator 41 is provided with its first surface side 41 a facing a downstream end 31 b side of the discharge flow path portion 31 of the discharge nozzle unit 30 .
  • the casing 11 has an air discharge port 14 communicating with the outside and inside of the casing 11 , at a position opposing a second surface side 41 b of the evaporator 41 .
  • the air sent from the scroll flow path portion 24 and taken in through the discharge flow path portion 31 passes from the first surface side 41 a to the second surface side 41 b , of the evaporator 41 and exchanges heat with a refrigerant flowing in the evaporator 41 .
  • the air, after being subjected to heat exchange in the evaporator 41 is discharged to the outside of the casing 11 from the air discharge port 14 of the casing 11 .
  • the motor cooling unit 50 cools the motor main body 21 a of the motor 21 for rotationally driving the scroll fan 22 of the fan unit 20 .
  • This motor cooling unit 50 includes a chamber 51 taking therein the air from the discharge flow path portion 31 of the discharge nozzle unit 30 , and a cooling duct 52 sending the air in the chamber 51 toward the motor main body 21 a.
  • the chamber 51 is formed in a region between the discharge flow path portion 31 and the scroll flow path portion 24 , at an upstream portion 31 a of the discharge flow path portion 31 of the discharge nozzle unit 30 .
  • the chamber 51 is surrounded by an outer peripheral wall 11 s provided at a radially outer portion of the scroll flow path portion 24 , a side wall 11 t provided on one side in the width direction, of the discharge flow path portion 31 , an L-shaped wall 53 of an L shape in plan view extending outward from an outer surface of the outer peripheral wall 11 s and connecting to an outer surface of the side wall 11 t , a bottom plate portion 54 formed in the lower casing 11 B, and a ceiling portion 55 A formed in the upper casing 11 A.
  • the chamber 51 communicates with the discharge flow path portion 31 through a communication opening 56 formed in the side wall 11 t , and a part of the air flowing through the discharge flow path portion 31 flows into the chamber 51 from this communication opening 56 .
  • the cooling duct 52 includes a cylindrical suction nozzle 57 having an opening portion 57 a that opens vertically upward inside the chamber 51 and protruding upward from the bottom plate portion 54 of the chamber 51 , and a cylindrical guide flow path portion 58 continuous to the suction nozzle 57 , provided along a lower portion of the bottom plate portion 11 c of the lower casing 11 B.
  • the guide flow path portion 58 includes a spray nozzle 58 a spraying the air to the motor main body 21 a that protrudes downward from the bottom plate portion 11 c of the lower casing 11 B.
  • the air flowing into the chamber 51 from the discharge flow path portion 31 through the communication opening 56 is sent from the opening portion 57 a that opens into the chamber 51 , to the suction nozzle 57 .
  • the air sent to the suction nozzle 57 passes the guide flow path portion 58 and then is sprayed to the motor main body 21 a by the spray nozzle 58 a to cool the motor main body 21 a.
  • the ceiling portion 55 A of the chamber 51 has an inclined surface 59 that is inclined obliquely downward from one end portion 55 a to the other end portion 55 b .
  • the inclined surface 59 is formed at least in a region of the ceiling portion 55 A including a portion vertically above the opening portion 57 a of the suction nozzle 57 .
  • the end portions 55 a and 55 b may be on the communication opening 56 side and the end portion 55 a may be on the side far from the communication opening 56 .
  • this inclined surface 59 allows the water drop to flow downward from above in the inclination direction along the inclined surface 59 .
  • the water drop made to flow downward along the inclined surface 59 is discharged from the communication opening 56 to the discharge flow path portion 31 .
  • the blower device 10 includes the motor cooling unit 50 equipped with the chamber 51 taking in a part of the air from the discharge flow path portion 31 and the cooling duct 52 having the opening portion 57 a that opens into the chamber 51 and supplying, to the motor 21 , the air in the chamber 51 taken in through the opening portion 57 a and the ceiling portion 55 A of the chamber 51 has the inclined surface 59 that is inclined downward from above.
  • the inclined surface 59 of the ceiling portion 55 A allows the water drop to flow downward from above along the inclination direction of the inclined surface 59 . This makes it possible to suppress the intrusion of water drop from the opening portion 57 a of the motor cooling unit 50 into the cooling duct 52 and prevent it from reaching the motor 21 .
  • the inclined surface 59 formed at least vertically above the opening portion 57 a can prevent water drop from falling on the opening portion 57 a with higher reliability.
  • the inclined surface 59 formed at the ceiling portion 55 A of the blower device 10 can suppress the intrusion of water drop into the cooling duct 52 from the opening portion 57 a of the motor cooling unit 50 and prevent it from reaching the motor 21 .
  • the ceiling portion 55 A of the chamber 51 is inclined obliquely downward from the one end portion 55 a to the other end portion 55 b ; however, the present invention is not limited thereto.
  • FIG. 5 is a vertical cross-sectional view illustrating a chamber of a blower device according to a modification of the present embodiment.
  • the ceiling portion 55 B of the chamber 51 may be formed by an inclined surface 60 of an umbrella shape extending obliquely downward to an outer circumferential end portion 55 d at a radially outer portion from a central portion 55 c of the ceiling portion 55 B in plan view.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Air-Conditioning For Vehicles (AREA)
US16/092,641 2016-07-15 2017-07-06 Blower device and vehicular air-conditioning device Abandoned US20190170159A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2016140550A JP6873622B2 (ja) 2016-07-15 2016-07-15 送風装置、車両用空気調和装置
JP2016-140550 2016-07-15
PCT/JP2017/024877 WO2018012410A1 (ja) 2016-07-15 2017-07-06 送風装置、車両用空気調和装置

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2017/024877 A-371-Of-International WO2018012410A1 (ja) 2016-07-15 2017-07-06 送風装置、車両用空気調和装置

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US17/176,458 Division US11629724B2 (en) 2016-07-15 2021-02-16 Blower device and vehicular air-conditioning device

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US20190170159A1 true US20190170159A1 (en) 2019-06-06

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US16/092,641 Abandoned US20190170159A1 (en) 2016-07-15 2017-07-06 Blower device and vehicular air-conditioning device
US17/176,458 Active US11629724B2 (en) 2016-07-15 2021-02-16 Blower device and vehicular air-conditioning device

Family Applications After (1)

Application Number Title Priority Date Filing Date
US17/176,458 Active US11629724B2 (en) 2016-07-15 2021-02-16 Blower device and vehicular air-conditioning device

Country Status (5)

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US (2) US20190170159A1 (enExample)
JP (1) JP6873622B2 (enExample)
CN (1) CN109562670B (enExample)
DE (1) DE112017003590T5 (enExample)
WO (1) WO2018012410A1 (enExample)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021070356A1 (ja) * 2019-10-11 2021-04-15 三菱重工サーマルシステムズ株式会社 車両用空調装置
KR102292952B1 (ko) * 2019-11-21 2021-08-23 덴소코리아 주식회사 차량의 이층류 공조기용 송풍장치

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Publication number Priority date Publication date Assignee Title
US6107708A (en) * 1998-03-16 2000-08-22 Asmo, Co., Ltd. Brushless motor
US6604906B2 (en) * 2000-08-04 2003-08-12 Calsonic Kansei Corporation Centrifugal multiblade blower
US20030008610A1 (en) * 2001-07-04 2003-01-09 Tatsuo Tsunooka Air conditioning unit for vehicle
US7011506B2 (en) * 2002-05-10 2006-03-14 Halla Climate Control Corporation Blower unit for air conditioner
US20040263009A1 (en) * 2003-06-27 2004-12-30 Takeo Noda Motor assembly for vehicle air conditioner
US6998740B2 (en) * 2003-12-05 2006-02-14 Asmo Co., Ltd. Drive circuit device and motor having the same
US7118355B2 (en) * 2005-02-04 2006-10-10 Delphi Technologies, Inc. Electric motor driven blower assembly with integral motor cooling duct
US7780405B2 (en) * 2005-12-28 2010-08-24 Denso Corporation Blower system having a cooling passage
US20070177996A1 (en) * 2006-02-01 2007-08-02 Robert Bosch Gmbh Cooling channel for automotive HVAC blower assembly
US20070237626A1 (en) * 2006-04-10 2007-10-11 Valeo Systemes Thermiques S.A.S. Cooling channel for a fan motor for a ventilation, heating, and/or air conditioning system
US10288077B2 (en) * 2014-05-12 2019-05-14 Denso Corporation Blower device
US20170051750A1 (en) * 2015-08-20 2017-02-23 Hanon Systems Edge-free blower cooling interface

Also Published As

Publication number Publication date
JP2018008659A (ja) 2018-01-18
US20210164480A1 (en) 2021-06-03
DE112017003590T5 (de) 2019-05-23
CN109562670A (zh) 2019-04-02
JP6873622B2 (ja) 2021-05-19
CN109562670B (zh) 2022-05-03
US11629724B2 (en) 2023-04-18
WO2018012410A1 (ja) 2018-01-18

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