US3775949A - Safety air supply device - Google Patents
Safety air supply device Download PDFInfo
- Publication number
- US3775949A US3775949A US00098389A US3775949DA US3775949A US 3775949 A US3775949 A US 3775949A US 00098389 A US00098389 A US 00098389A US 3775949D A US3775949D A US 3775949DA US 3775949 A US3775949 A US 3775949A
- Authority
- US
- United States
- Prior art keywords
- air
- filter
- coarse dust
- dust filter
- inlet
- 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.)
- Expired - Lifetime
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F41—WEAPONS
- F41H—ARMOUR; ARMOURED TURRETS; ARMOURED OR ARMED VEHICLES; MEANS OF ATTACK OR DEFENCE, e.g. CAMOUFLAGE, IN GENERAL
- F41H7/00—Armoured or armed vehicles
- F41H7/02—Land vehicles with enclosing armour, e.g. tanks
- F41H7/03—Air-pressurised compartments for crew; Means for preventing admission of noxious substances, e.g. combustion gas from gun barrels, in crew compartments; Sealing arrangements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
-
- 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
- B60H3/00—Other air-treating devices
- B60H3/06—Filtering
- B60H3/0608—Filter arrangements in the air stream
- B60H3/0625—Filter arrangements in the air stream with provisions for by-passing the filter element
Abstract
A safety air supplying device by means of which a room is supplied with air which is purified from poisonous substances includes an inlet connected to a coarse dust filter which, in turn, is connected to a suspended-matter filter, or gas filter and to an intake fan which discharges into the room. A by-pass line extends from the inlet to the coarse dust filter and to a line which connects into the outlet of the coarse dust filter at the location where it connects into the gas filter. This line is provided with a rapid closure valve. In those cases, in which the quantity of air which must be delivered must be considerably increased rapidly, this quick closure valve is opened, and, at the same time, the speed of the delivery of the fan can be increased.
Description
United States Patent [1 1 Wiichter Dec. 4, 1973 1 1 SAFETY AIR SUPPLY DEVICE [75] Inventor: Karl-August Wiichter, Lubeck,
Germany [73] Assignee: Dragerwerk AG, Lubeck, Germany [22] Filed: Dec. 15, 1970 [21] Appl. No.: 98,389
[30] Foreign Application Priority Data Dec. 23, 1969 Germany P 19 64 898.7
[52] US. Cl. 55/312, 55/316, 55/467,
, 55/482 [51] Int. Cl. B0111 50/00 [58] Field of Search 55/30 9-314, 316, 323,
[56] References Cited v UNITED STATES PATENTS 1,840,253 1/1932 Richardson 55/467 2,503,568 4/1950 Timin 55/472 2,610,565 9/1952 Stuart 98/1.5 3,239,305 3/1966 Potapenko 21/74 R Bovio 55/312 3,149,940 9/1964 Wachter 55/316 3,304,783 2/1967 Quigley 55/309 3,668,825 6/1972 Mcllvaine 55/316 Primary Examiner-Bernard Nozick Attorney-John J. McGlew and Alfred E. Page [5 7 ABSTRACT A safety air supplying device by means of which a room is supplied with air which is purified from poisonous substances includes an inlet connected to a coarse dust filter which, in tum, is connected to a suspended-matter filter, or gas filter and to an intake fan which discharges into the room. A by-pass line extends from the inlet to the coarse drust filter and to a line which connects into the outlet of the coarse dust filter at the location where it connects into the gas filter. This line is provided with a rapid closure valve. In those cases, in which the quantity of air which must be delivered must be considerably increased rapidly,'this quick closure valve is opened, and, at the same time, the speed of the delivery of the fan can be increased.
2 Claims, 1 Drawing Figure 1 SAFETY AIR SUPPLY DEVICE SUMMARY OF THE INVENTION This invention relates, in general, to the construction of safet air supplying devices and, in particular, to a new anduseful device particularly for supplying air which is purified from poisonous substances to a compartment space of a vehicle.
Safety air devices are known by means of which a room is supplied with air purified from poisonous substances. Such safety air devices are used in particular for vehicles which have a crew room which is to be supplied with clean air. In the order of the passage of the air through the device, the safety air device consists of acoarsedust filter which retains the coarse particles entrained in the air, a suspendedmatter filter, which serves to retain the fine suspended particles, :1 gas filter in which gaseous components are absorbed from the air and a'fan which draws the air through the installation and forces it into the room to be ventilated. These safety devices are generally lodged inside the rooms to be ventilated. Any occurring leaks in the ventilation system do not disturb thesafety device since the air already filtered is drawn back into the installation.
In accordance with the present invention, there is provided a safety-device for supplying emergency air in which the quantity of air which is delivered may 'be considerably increased for a short period of time. An increase of the quantity of intake air by adjustment of the fan to a higher delivery is generally not sufficient since, with the higher delivery of the fan, there is an increased fiow resistance through the entire system.
In accordance with the invention, the gas entrance side and the gas exit side of the course dust filter are connected by an air line having a rapid closure valve.
This closure valve may be opened to by-pass the coarse filter and provide a rapid air flow thorugh the system.
With the invention, the quantity of air delivered by the the device. This temporary by-passing of the coarse dust filter is permissible for the brief operating period of the device as the air is purified in the following filter parts.
The rapid closure valve advantageously comprises a pivotal damper or an elastic shutter member which can be actuated, for example, electrically. The insertion of a rapid closure valve of this type does not present any disadvantage to the ventilation system since the air bypassing the coarse dust filter is purified by subsequently acting filter elements.
Accordingly, it is an object of the invention to provide an emergency air supply device which includes an inlet connected to a coarse filter which, in turn, connects through one or more other filters and is discharged by an inlet fan into the space of use and wherein means are provided for rapidly increasing the flow through the system by by-passing a quantity of the air around the coarse filter and feeding it through the remaining filter elements.
A further object of the invention is to provide a safety air supply device which is simple in design, rugged in consturction, and economical to manufacture.
For an understanding of the principles of the invention, reference is made to the following descripiton of a typical embodiment thereof as illustrated in the accompanying drawing.
BRIEF DESCRIPITON OF THE DRAWINGS The only FIGURE of the drawing is a diagrammatic illustration of thesafety air supply device constructed in accordance with the inention.
GENERAL DESCRIPTION OF THE PREFERRED EMBOIDMENT The safety air supplying device is used in connection with a vehicle having a wall 2 with an inlet 1 which is covered by a protective flap 3. The inlet 1 is defined at the end of an inlet flow pipe 4 which leads to a course dust filter 5 and then to a suspended matter filter and gas filter 6. The flow is then from the suspended matter filter and gas filter 6 through a conduit 15 of a fan 7 which discharges through an outlet 9 into the interior of the vehicle. Flow of the air'is as indicated by the arrows 8 to the inlet side 10 of the coarse dust filter 5 and out through the outlet'side 12 to the suspended matter filter and gas filter 6. In accordance with the invention, a by-pass line 11 permits a flow as indicated by the arrows 16 through a by-pass line 11 and through a rapid closure valve 13 and into a passage 19 which joins the flow from the outlet 12 of the coarse dust filter 5. The coarse dust filter 5 is advantageously a cyclone separator. A closure valve 13 comprises in the embodiment illustrated a damper valve which includes a member pivotal about a center shaft. In another form, the vaLve 13 comprises a rapid closure valve having an elastic shutter.
At normal air ratio, the rapid closure valve 13 is closed so that the air is drawn through the coarse dust filter 5 and then through the other filter elements 6 and forced into the room through the discharge 9. Air pass ing through due to leakage of the valve 13 is purified in the suspended-matter-and-gas filters generally desigpoisonous substances to a space, for example to the in-.
terior of a vehicle, comprising an inlet conduit, a coarse dust filter disposed in said inlet conduit for flow of air through said coarse dust filter, a suspended matter and gas filter connected in said inlet conduit downstream of said coarse dust filter for the flow of air from said coarse dust filter to and through said suspended matter and gas filter, an inlet fan connected to said suspended matter and gas filter and adapted to discharge into the space for the supply of filtered air thereto, a by-pass line connected from said inlet conduit upstream of and around said coarse dust filter to said suspended matter and gas filter, and a rapid closure valve in said by-pass line which is opena'ble to permit the flow of air around said coarse dust filter.
2. A safety air device, according to claim 1, wherein said rapid closure valve comprises a damper valve.
Claims (2)
1. A device for supplying air which is purified from poisonous substances to a space, for example to the interior of a vehicle, comprising an inlet conduit, a coarse dust filter disposed in said inlet conduit for flow of air through said coarse dust filter, a suspended matter and gas filter connected in said inlet conduit downstream of said coarse dust filter for the flow of air from said coarse dust filter to and through said suspended matter and gas filter, an inlet fan connected to said suspended matter and gas filter and adapted to discharge into the space for the supply of filtered air thereto, a by-pass line connected from said inlet conduit upstream of and around said coarse dust filter to said suspended matter and gas filter, and a rapid closure valvE in said by-pass line which is openable to permit the flow of air around said coarse dust filter.
2. A safety air device, according to claim 1, wherein said rapid closure valve comprises a damper valve.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19691964898 DE1964898C3 (en) | 1969-12-24 | Protective air device for vehicles |
Publications (1)
Publication Number | Publication Date |
---|---|
US3775949A true US3775949A (en) | 1973-12-04 |
Family
ID=5754977
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US00098389A Expired - Lifetime US3775949A (en) | 1969-12-24 | 1970-12-15 | Safety air supply device |
Country Status (5)
Country | Link |
---|---|
US (1) | US3775949A (en) |
BE (1) | BE760612A (en) |
CH (1) | CH518816A (en) |
FR (1) | FR2069486A5 (en) |
GB (1) | GB1331998A (en) |
Cited By (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3898065A (en) * | 1973-10-09 | 1975-08-05 | Norman Dryer Co Inc | Lint collector |
US4140502A (en) * | 1971-08-24 | 1979-02-20 | Adolf Margraf | Filtering separators with dust feedback |
US4156599A (en) * | 1977-08-24 | 1979-05-29 | Adolf Margraf | Filtering separators for cleaning gases |
US4198213A (en) * | 1978-01-26 | 1980-04-15 | The Garrett Corporation | Self adjusting oxygen enrichment system |
US4717402A (en) * | 1984-10-01 | 1988-01-05 | Control Resource Systems, Inc. | Air purification system |
US4906257A (en) * | 1987-09-25 | 1990-03-06 | Takeda Chemical Industries, Ltd. | Method of and apparatus for treating waste gas from semiconductor manufacturing process |
US4961763A (en) * | 1989-04-19 | 1990-10-09 | Space Biospheres Venture | Indoor air purifier |
US4985057A (en) * | 1989-08-09 | 1991-01-15 | Griffis Steven C | Supplied air respirator system |
US5564626A (en) * | 1995-01-27 | 1996-10-15 | York International Corporation | Control system for air quality and temperature conditioning unit with high capacity filter bypass |
US20070101688A1 (en) * | 2003-01-31 | 2007-05-10 | John Wootton | Nbc filtration unit providing unfiltered and filtered air paths |
US20090193821A1 (en) * | 2005-10-20 | 2009-08-06 | Calsonic Kansei Corporation | Pre-riding air conditioning method and air conditioner |
RU2518887C1 (en) * | 2013-04-23 | 2014-06-10 | Данил Андреевич Кара | Method of removing combustion gases from fighting cab of tank |
RU2521852C1 (en) * | 2013-04-23 | 2014-07-10 | Данил Андреевич Кара | Reduction of gas content in tank combat compartment |
RU2542678C1 (en) * | 2013-10-15 | 2015-02-20 | Открытое акционерное общество "Конструкторское бюро приборостроения им. академика А.Г. Шипунова" | Combat vehicle |
RU2560229C1 (en) * | 2014-10-01 | 2015-08-20 | Александр Александрович Котровский | Method of removal of powder gases from tank armament gun |
RU2570468C1 (en) * | 2014-11-17 | 2015-12-10 | Александр Александрович Котровский | Method of ventilation of manned compartment of combat vehicle |
RU2581967C1 (en) * | 2015-06-15 | 2016-04-20 | Александр Александрович Котровский | Method of increasing intensity of air exchange in inhabited compartments of combat vehicle |
RU2665979C1 (en) * | 2017-10-16 | 2018-09-05 | Евгений Дмитриевич Золотых | Method for removing powder gases from breech of combat vehicle armament |
RU2680297C1 (en) * | 2017-10-16 | 2019-02-19 | Евгений Дмитриевич Золотых | Device for quality increase of the potential of the habitable departments of fighting machine using armament |
WO2020011672A1 (en) * | 2018-07-13 | 2020-01-16 | Sally R Ab | Module for treating air, method for treating air, and related systems |
RU217117U1 (en) * | 2022-06-23 | 2023-03-17 | Федеральное Государственное Казенное Военное Образовательное Учреждение Высшего Образования "Военный Университет Имени Князя Александра Невского" Министерства Обороны Российской Федерации | DEVICE FOR REMOVING POWDER GASES FROM TANK COMBAT COMPARTMENT |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2551086A1 (en) * | 1975-11-14 | 1977-05-18 | Wegmann & Co | DEVICE FOR TEMPORARILY SEALING OF THE INTERIORS OF ARMORED VEHICLES, IN PARTICULAR COMBAT TANKS, AGAINST THE INGRESS OF LIQUID OR GAS MATERIALS |
US4264344A (en) * | 1980-02-06 | 1981-04-28 | General Motors Corporation | Diesel engine exhaust particulate trap |
FR2508853A1 (en) * | 1981-07-01 | 1983-01-07 | Borg Antoine | Air filter for building ventilator - has porous air filter with indirect passage to secondary filter |
DE3532463A1 (en) * | 1985-09-11 | 1987-03-19 | Sueddeutsche Kuehler Behr | HEATING AND / OR AIR CONDITIONING FOR MOTOR VEHICLES |
DE3545664A1 (en) * | 1985-12-21 | 1987-07-02 | Knecht Filterwerke Gmbh | Ventilation device for closed rooms |
DE3737010A1 (en) * | 1987-10-31 | 1989-05-11 | Hoelter Heinz | Air filter for motor vehicles with automatically opening pressure flap |
US5004487A (en) * | 1989-04-13 | 1991-04-02 | Thaddeus Kowalczyk | Filter assembly for protecting motor vehicle occupants from pollution |
DE4015506A1 (en) * | 1990-05-15 | 1991-11-21 | Hanns Rump | High quality air prodn. using multiple filter - having mechanical, noble metal coated and varying pH filter elements, pref. with monitor and warning system |
RU2159706C1 (en) | 2000-05-04 | 2000-11-27 | Кутьев Анатолий Анатольевич | Method of and device for charcoal regeneration |
RU2521064C1 (en) * | 2013-04-15 | 2014-06-27 | Данил Андреевич Кара | Tank headroom venting at gunnery |
CN107975842B (en) * | 2017-05-27 | 2023-08-18 | 宁波方太厨具有限公司 | Public flue smoke discharging system and control method |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1840253A (en) * | 1929-10-18 | 1932-01-05 | Edwin P Richardson | Supercharger for internal combustion engines |
US2503568A (en) * | 1944-09-25 | 1950-04-11 | Timm Aircraft Corp | Vacuum cleaner |
US2610565A (en) * | 1946-12-14 | 1952-09-16 | William W Stuart | Means for controlling air pressure in buildings |
US3149940A (en) * | 1960-07-25 | 1964-09-22 | Drager Otto H | Dust filter in series with parallel rows of gas filters |
US3239305A (en) * | 1962-06-07 | 1966-03-08 | Potapenko Gennady | Aseptic air system |
US3304783A (en) * | 1964-06-10 | 1967-02-21 | Inland Steel Co | Apparatus and method for continuously sampling gas |
US3545500A (en) * | 1967-12-21 | 1970-12-08 | Sylvania Electric Prod | Vacuum system |
US3668825A (en) * | 1969-08-28 | 1972-06-13 | Nat Dust Collector Corp | Method and apparatus for determining the difficulty of removing pollutants by wet scrubbing action |
-
1970
- 1970-11-16 FR FR7040975A patent/FR2069486A5/fr not_active Expired
- 1970-11-17 CH CH1697270A patent/CH518816A/en not_active IP Right Cessation
- 1970-12-15 US US00098389A patent/US3775949A/en not_active Expired - Lifetime
- 1970-12-21 BE BE760612A patent/BE760612A/en unknown
- 1970-12-22 GB GB6095270A patent/GB1331998A/en not_active Expired
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1840253A (en) * | 1929-10-18 | 1932-01-05 | Edwin P Richardson | Supercharger for internal combustion engines |
US2503568A (en) * | 1944-09-25 | 1950-04-11 | Timm Aircraft Corp | Vacuum cleaner |
US2610565A (en) * | 1946-12-14 | 1952-09-16 | William W Stuart | Means for controlling air pressure in buildings |
US3149940A (en) * | 1960-07-25 | 1964-09-22 | Drager Otto H | Dust filter in series with parallel rows of gas filters |
US3239305A (en) * | 1962-06-07 | 1966-03-08 | Potapenko Gennady | Aseptic air system |
US3304783A (en) * | 1964-06-10 | 1967-02-21 | Inland Steel Co | Apparatus and method for continuously sampling gas |
US3545500A (en) * | 1967-12-21 | 1970-12-08 | Sylvania Electric Prod | Vacuum system |
US3668825A (en) * | 1969-08-28 | 1972-06-13 | Nat Dust Collector Corp | Method and apparatus for determining the difficulty of removing pollutants by wet scrubbing action |
Cited By (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4140502A (en) * | 1971-08-24 | 1979-02-20 | Adolf Margraf | Filtering separators with dust feedback |
US3898065A (en) * | 1973-10-09 | 1975-08-05 | Norman Dryer Co Inc | Lint collector |
US4156599A (en) * | 1977-08-24 | 1979-05-29 | Adolf Margraf | Filtering separators for cleaning gases |
US4198213A (en) * | 1978-01-26 | 1980-04-15 | The Garrett Corporation | Self adjusting oxygen enrichment system |
US4717402A (en) * | 1984-10-01 | 1988-01-05 | Control Resource Systems, Inc. | Air purification system |
US4906257A (en) * | 1987-09-25 | 1990-03-06 | Takeda Chemical Industries, Ltd. | Method of and apparatus for treating waste gas from semiconductor manufacturing process |
US4961763A (en) * | 1989-04-19 | 1990-10-09 | Space Biospheres Venture | Indoor air purifier |
US4985057A (en) * | 1989-08-09 | 1991-01-15 | Griffis Steven C | Supplied air respirator system |
US5564626A (en) * | 1995-01-27 | 1996-10-15 | York International Corporation | Control system for air quality and temperature conditioning unit with high capacity filter bypass |
US5590830A (en) * | 1995-01-27 | 1997-01-07 | York International Corporation | Control system for air quality and temperature conditioning unit with high capacity filter bypass |
US5707005A (en) * | 1995-01-27 | 1998-01-13 | York International Corporation | Control system for air quality and temperature conditioning unit with high capacity filter bypass |
US7326269B2 (en) * | 2003-01-31 | 2008-02-05 | Engineered Support Systems, Inc. | NBC filtration unit providing unfiltered and filtered air paths |
US20070101688A1 (en) * | 2003-01-31 | 2007-05-10 | John Wootton | Nbc filtration unit providing unfiltered and filtered air paths |
US20090193821A1 (en) * | 2005-10-20 | 2009-08-06 | Calsonic Kansei Corporation | Pre-riding air conditioning method and air conditioner |
RU2518887C1 (en) * | 2013-04-23 | 2014-06-10 | Данил Андреевич Кара | Method of removing combustion gases from fighting cab of tank |
RU2521852C1 (en) * | 2013-04-23 | 2014-07-10 | Данил Андреевич Кара | Reduction of gas content in tank combat compartment |
RU2542678C1 (en) * | 2013-10-15 | 2015-02-20 | Открытое акционерное общество "Конструкторское бюро приборостроения им. академика А.Г. Шипунова" | Combat vehicle |
RU2560229C1 (en) * | 2014-10-01 | 2015-08-20 | Александр Александрович Котровский | Method of removal of powder gases from tank armament gun |
RU2570468C1 (en) * | 2014-11-17 | 2015-12-10 | Александр Александрович Котровский | Method of ventilation of manned compartment of combat vehicle |
RU2581967C1 (en) * | 2015-06-15 | 2016-04-20 | Александр Александрович Котровский | Method of increasing intensity of air exchange in inhabited compartments of combat vehicle |
RU2665979C1 (en) * | 2017-10-16 | 2018-09-05 | Евгений Дмитриевич Золотых | Method for removing powder gases from breech of combat vehicle armament |
RU2680297C1 (en) * | 2017-10-16 | 2019-02-19 | Евгений Дмитриевич Золотых | Device for quality increase of the potential of the habitable departments of fighting machine using armament |
WO2020011672A1 (en) * | 2018-07-13 | 2020-01-16 | Sally R Ab | Module for treating air, method for treating air, and related systems |
RU217117U1 (en) * | 2022-06-23 | 2023-03-17 | Федеральное Государственное Казенное Военное Образовательное Учреждение Высшего Образования "Военный Университет Имени Князя Александра Невского" Министерства Обороны Российской Федерации | DEVICE FOR REMOVING POWDER GASES FROM TANK COMBAT COMPARTMENT |
Also Published As
Publication number | Publication date |
---|---|
GB1331998A (en) | 1973-09-26 |
DE1964898A1 (en) | 1971-07-01 |
DE1964898B2 (en) | 1975-01-23 |
BE760612A (en) | 1971-05-27 |
FR2069486A5 (en) | 1971-09-03 |
CH518816A (en) | 1972-02-15 |
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