EP4286762A4 - Muffling device - Google Patents

Muffling device Download PDF

Info

Publication number: EP4286762A4
Authority: EP; European Patent Office
Prior art keywords: muffling device; muffling
Prior art date: 2021-01-26
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.): Pending

Application number

EP21922755.0A

Other languages

German (de)

French (fr)

Other versions

EP4286762A1 (en

Inventor

Tatsushi Murakami

Kazuki Okamoto

Yuji Mizuno

Shinya Kato

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 Electric Corp

Original Assignee

Mitsubishi Electric Corp

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.)

2021-01-26

Filing date

2021-01-26

Publication date

2024-03-06

2021-01-26 Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp

2023-12-06 Publication of EP4286762A1 publication Critical patent/EP4286762A1/en

2024-03-06 Publication of EP4286762A4 publication Critical patent/EP4286762A4/en

Status Pending legal-status Critical Current

Links

Classifications

- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/24—Means for preventing or suppressing noise
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/02—Ducting arrangements
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/20—Casings or covers
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/24—Means for preventing or suppressing noise
- F24F2013/242—Sound-absorbing material
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/24—Means for preventing or suppressing noise
- F24F2013/245—Means for preventing or suppressing noise using resonance

Landscapes

Engineering & Computer Science (AREA)
Chemical & Material Sciences (AREA)
Combustion & Propulsion (AREA)
Mechanical Engineering (AREA)
General Engineering & Computer Science (AREA)
Duct Arrangements (AREA)

EP21922755.0A 2021-01-26 2021-01-26 Muffling device Pending EP4286762A4 (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
PCT/JP2021/002649 WO2022162731A1 (en)	2021-01-26	2021-01-26	Muffling device

Publications (2)

Publication Number	Publication Date
EP4286762A1 EP4286762A1 (en)	2023-12-06
EP4286762A4 true EP4286762A4 (en)	2024-03-06

Family

ID=82652746

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP21922755.0A Pending EP4286762A4 (en)	2021-01-26	2021-01-26	Muffling device

Country Status (3)

Country	Link
EP (1)	EP4286762A4 (en)
JP (1)	JPWO2022162731A1 (en)
WO (1)	WO2022162731A1 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP2642215A1 (en) *	2012-03-19	2013-09-25	NuAire Limited	Accoustic attenuator for a ventilating unit
EP3584511A1 (en) *	2018-05-16	2019-12-25	STIEBEL ELTRON GmbH & Co. KG	Ventilation device with noise absorber attachment
EP3042131B1 (en) *	2013-09-06	2020-06-03	Zehnder Group International AG	Silencer unit for heat recovery ventilation unit

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPS6416545U (en) *	1987-07-21	1989-01-27
JPH03263537A (en) *	1990-03-14	1991-11-25	Daikin Ind Ltd	Heat-exchanging ventilator
JPH0526492A (en) *	1991-07-19	1993-02-02	Mitsubishi Electric Corp	Air conditioner
JP2002089228A (en) *	2000-09-08	2002-03-27	Masakatsu Hayashizaki	Pleat-like noise separation-type silencer
EP2306108B1 (en) *	2009-09-25	2013-11-20	Hans Östberg	A ventilating arrangement
DK3249313T3 (en) *	2013-09-06	2021-02-01	Zehnder Group Int Ag	Muffler FOR HEAT RECOVERY VENTILATION UNIT
EP3543622B1 (en) *	2018-03-21	2021-01-20	Hoval Aktiengesellschaft	Acoustic dampening device and room ventilation system with such an acoustic dampening device

2021
- 2021-01-26 EP EP21922755.0A patent/EP4286762A4/en active Pending
- 2021-01-26 WO PCT/JP2021/002649 patent/WO2022162731A1/en active Application Filing
- 2021-01-26 JP JP2022577830A patent/JPWO2022162731A1/ja active Pending

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP2642215A1 (en) *	2012-03-19	2013-09-25	NuAire Limited	Accoustic attenuator for a ventilating unit
EP3042131B1 (en) *	2013-09-06	2020-06-03	Zehnder Group International AG	Silencer unit for heat recovery ventilation unit
EP3584511A1 (en) *	2018-05-16	2019-12-25	STIEBEL ELTRON GmbH & Co. KG	Ventilation device with noise absorber attachment

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2022162731A1 *

Also Published As

Publication number	Publication date
EP4286762A1 (en)	2023-12-06
JPWO2022162731A1 (en)	2022-08-04
WO2022162731A1 (en)	2022-08-04

Legal Events

Date	Code	Title	Description
2022-08-05	STAA	Information on the status of an ep patent application or granted ep patent	Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE
2023-11-03	PUAI	Public reference made under article 153(3) epc to a published international application that has entered the european phase	Free format text: ORIGINAL CODE: 0009012
2023-11-03	STAA	Information on the status of an ep patent application or granted ep patent	Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE
2023-12-06	17P	Request for examination filed	Effective date: 20230613
2023-12-06	AK	Designated contracting states	Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
2024-01-31	REG	Reference to a national code	Ref country code: DE Ref legal event code: R079 Free format text: PREVIOUS MAIN CLASS: F24F0013140000 Ipc: F24F0013240000
2024-03-06	A4	Supplementary search report drawn up and despatched	Effective date: 20240206
2024-03-06	RIC1	Information provided on ipc code assigned before grant	Ipc: F24F 13/02 20060101ALI20240131BHEP Ipc: F24F 13/20 20060101ALI20240131BHEP Ipc: F24F 13/24 20060101AFI20240131BHEP
2024-05-01	DAV	Request for validation of the european patent (deleted)
2024-05-01	DAX	Request for extension of the european patent (deleted)

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