JPS5791316A - Device for attenuating noise - Google Patents

Device for attenuating noise

Info

Publication number
JPS5791316A
JPS5791316A JP1521181A JP1521181A JPS5791316A JP S5791316 A JPS5791316 A JP S5791316A JP 1521181 A JP1521181 A JP 1521181A JP 1521181 A JP1521181 A JP 1521181A JP S5791316 A JPS5791316 A JP S5791316A
Authority
JP
Japan
Prior art keywords
louvers
noise
louver
making
making air
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.)
Granted
Application number
JP1521181A
Other languages
Japanese (ja)
Other versions
JPS6225852B2 (en
Inventor
Toru Tezuka
Kisaburo Kotabe
Satoshi Wada
Kanji Uchiyama
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.)
Caterpillar Mitsubishi Ltd
Original Assignee
Caterpillar Mitsubishi 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 Caterpillar Mitsubishi Ltd filed Critical Caterpillar Mitsubishi Ltd
Priority to JP1521181A priority Critical patent/JPS5791316A/en
Publication of JPS5791316A publication Critical patent/JPS5791316A/en
Publication of JPS6225852B2 publication Critical patent/JPS6225852B2/ja
Granted legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
    • F01P11/12—Filtering, cooling, or silencing cooling-air

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)

Abstract

PURPOSE:To avoid the increase in the volume of noise only in a particular direction, by making a noise attenuation device of plural horizontal louvers of such cross-sectional shape as to diffuse noise-making air upward and downward through the device and by attaching the device to the engine enclosure of a construction machine or the like. CONSTITUTION:A silencing louver unit 14, which is provided at the open part 9 of the radiator guard 8 of the engine enclosure of an earth-moving vehicle, is made of a plurality of horizontal louvers 36 extending at intervals in parallel with each other. The louvers 36 are mounted on a fixed frame not shown in the drawing. The silencing louver unit 14 is removable installed at the open part 9. Each louver 36 is made of a sound absorber coated with punched metal of enough punched percentage and is positioned at a prescribed angle to the flow of noise-making air discharged by a cooling fan 3. The upper louvers 36a are shaped to conduct the noise-making air upward. The lower louvers 36b are shaped to conduct the air downward. A wedgeshaped louver 36c is provided beteen the upper and the lower louvers 36a, 36b.
JP1521181A 1981-02-04 1981-02-04 Device for attenuating noise Granted JPS5791316A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1521181A JPS5791316A (en) 1981-02-04 1981-02-04 Device for attenuating noise

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1521181A JPS5791316A (en) 1981-02-04 1981-02-04 Device for attenuating noise

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP16567680A Division JPS6035543B2 (en) 1980-11-25 1980-11-25 engine enclosure device

Publications (2)

Publication Number Publication Date
JPS5791316A true JPS5791316A (en) 1982-06-07
JPS6225852B2 JPS6225852B2 (en) 1987-06-05

Family

ID=11882534

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1521181A Granted JPS5791316A (en) 1981-02-04 1981-02-04 Device for attenuating noise

Country Status (1)

Country Link
JP (1) JPS5791316A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7707986B1 (en) 2008-10-15 2010-05-04 Gm Global Technology Operations, Inc. Noise attenuation for internal combustion engine
JP2015224624A (en) * 2014-05-30 2015-12-14 デンヨー株式会社 Engine driving work machine

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5042137U (en) * 1973-08-20 1975-04-28
JPS5463839U (en) * 1977-10-13 1979-05-07

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5042137U (en) * 1973-08-20 1975-04-28
JPS5463839U (en) * 1977-10-13 1979-05-07

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7707986B1 (en) 2008-10-15 2010-05-04 Gm Global Technology Operations, Inc. Noise attenuation for internal combustion engine
JP2015224624A (en) * 2014-05-30 2015-12-14 デンヨー株式会社 Engine driving work machine

Also Published As

Publication number Publication date
JPS6225852B2 (en) 1987-06-05

Similar Documents

Publication Publication Date Title
US5297517A (en) Noise suppression enclosure for an engine
JP2831114B2 (en) High-speed elevator car ventilation system
US3413905A (en) Air intake
US2803185A (en) Ventilating louver assembly
US4483412A (en) Noise absorption apparatus
US4503931A (en) Noise suppressing, air cooled enclosure for an engine
JPS55145023A (en) Vehicle for civil engineering work
CN108954759B (en) Air port device and air conditioning unit
US4129121A (en) Exhaust hood canopy having a multi slot venturi outlet
CN107940716A (en) A kind of wind-guiding grate and air-conditioning
JPS5791316A (en) Device for attenuating noise
US4289096A (en) Accoustic noise suppression apparatus noise suppression means
WO1993004272A1 (en) Noise suppression enclosure for an engine
SE7511891L (en) FRESH AIR LOCK FOR ROOM VENTILATION
CN111189128A (en) Installation process of noise elimination and sound insulation equipment for air conditioner outdoor unit
CN205533452U (en) Blowing device
KR100238514B1 (en) Air conditioner
CN212430980U (en) Fume exhaust fan
JPS5791314A (en) Device for reducing engine noise
EP3561380B1 (en) Air exhausting mechanism for mobile illuminating lighthouse
CN111928469A (en) Five-petal matrix silencer
US2923228A (en) Ventilator construction
CN217763575U (en) Smoke exhaust ventilator
SU699158A1 (en) Silencing arrangement
JPS5791315A (en) Device for reducing engine noise