DE2400351A1 - Protective device for hot gas filter - being thermostatically controlled auxiliary fan giving bleed of clean cold air - Google Patents

Protective device for hot gas filter - being thermostatically controlled auxiliary fan giving bleed of clean cold air

Info

Publication number
DE2400351A1
DE2400351A1 DE2400351A DE2400351A DE2400351A1 DE 2400351 A1 DE2400351 A1 DE 2400351A1 DE 2400351 A DE2400351 A DE 2400351A DE 2400351 A DE2400351 A DE 2400351A DE 2400351 A1 DE2400351 A1 DE 2400351A1
Authority
DE
Germany
Prior art keywords
filter
hot gas
fan
gas
auxiliary fan
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.)
Pending
Application number
DE2400351A
Other languages
German (de)
Inventor
Heinz Hoelter
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DE2400351A priority Critical patent/DE2400351A1/en
Publication of DE2400351A1 publication Critical patent/DE2400351A1/en
Pending legal-status Critical Current

Links

Classifications

    • 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
    • B01D46/0084—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours provided with safety means
    • B01D46/0087—Bypass or safety valves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2273/00—Operation of filters specially adapted for separating dispersed particles from gases or vapours
    • B01D2273/20—High temperature filtration

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)

Abstract

A hot gas filter has an auxiliary fan and a damper controlled by a thermostat in a dirty gas stream. If the temp. exceeds a certain value, a fan and a damper are used to draw some additional cold air through the system to prevent overheating and consequent damage to the filter bags. Only a negligible amt. of excess load is placed on the filter, the extra air is clean and so no extra dust load is involved, and no reduction in the flow of dirty gas involved, since the hot gas fans can take a periodic increase in load to compensate for the reduced suction pressure reqd. Used for systems where hot dirty gases need to be filtered. Where cold gas bleeds are used to protect the filter cloth, this often results in depressed throughput from the equipment being exhausted. The use of an auxiliary fan avoids this, and although there is a slight reduction in filtration efficiency, the destruction of the filter cloth is avoided. The auxiliary fan has about 10% of the capacity of the main gas fan.

Description

@eschreibung und Erläuterung zur Patchtanmeldung "Schutzvorrichtung für Hoißgasfilter" @@@ @eißgasfiltern wird vielfach vor Ausschaltung von @@@rtamperaturen in Filtern ein Bypass geöffnet, um @altluft anzusangen und somit den Filter vor überterperatur zu schützen. Description and explanation of the patch registration "Protective device for Hoißgasfilter "@@@ @ eißgasfiltern is often before switching off @@@ rtamperaturen A bypass is opened in filters in order to draw in old air and thus the filter in front to protect excess temperature.

Der große Machteil dieser technischen Anordnung liegt naturgemäß darin, daß die ahzusaugenden Rohgasmengen verringert werden und somit Pelastungen im Arheitsbereich der Absaughauben entstehen.The main disadvantage of this technical arrangement is naturally that the ahzusaugenden raw gas quantities are reduced and thus loadings in the poor area the extraction hoods arise.

Um den Machteil der Vorringerung der Absaugmenge auszu-Schließen und trotzdem den Filter vor übertemperatur zu schützen, wird erfindungsgemäß folgansende Vorrichtung vorgeschlagen: Der Heißgasfilter wird zusätzlich mit einem Ventilator versehen, der bekannte und gewünschte Kühlluftmengen zusätzlich in den Filter ansaugt, über einen ganz kurzen Bypass, der unmittelbar auf der Saugseite des Filters angesetzt wird.In order to exclude the disadvantage of reducing the suction volume and In spite of this, to protect the filter from excess temperature is the following according to the invention Device proposed: The hot gas filter is additionally equipped with a fan provided, which additionally sucks in known and desired quantities of cooling air into the filter, Via a very short bypass that is placed directly on the suction side of the filter will.

Dieser Ventilator hat die Aufgabe, z.B. 10 % Kühlluft zusätzlich zum Heißgas durch den Filter zu saugen, um dadurch eine übertemperatur, die zue Zcrstörung der Filtergewebe führen könnte, zu vermeiden.This fan has the task of e.g. 10% cooling air in addition to the Suck hot gas through the filter, thereby creating an excess temperature, which leads to destruction the filter fabric could lead to avoid.

Dieses wird erfindungsgeräß dadurch @rreicht, daß die @ypassklappe in @@@amnter Weise über einen @berrostaten gesteuert wird, und @@hr schnell wird Haltluft anstelle ven beißom Schmutzgas in den @ilter @esaust, wobei gleichzeitig der Busatzventilater mitanläuft, so daß mur @@@g kurze Phase der zusätzlichen Schmutzhelastung am Absungsystem entsteht.This is achieved according to the invention in that the @ypass flap is controlled in a @@@ amnter manner via a @berrostaten, and @@ hr becomes fast Holding air instead of biting dirty gas into the filter, and at the same time the Busatzventilater starts up too, so that mur @@@ g short phase of the additional dirt load at the descent system.

Der Filter wird zwar zwaugsläufig mit mchr Luft beaufschlagt, und die Entstaubungslaistung, bezogen auf den Durchlaßgrad, wird etwas schlechter, jedoch kann diese geringfügige, kurzzeitige Verschlechterung große G@fabr@@ einer Filtergewebevennichtung, die ja bei Großanlagen bis zu 100.000 @@ kosten kann, ausschalten.The filter is inevitably pressurized with mchr air, and the dedusting performance, based on the degree of penetration, is somewhat worse, however This slight, short-term deterioration can be a major factor in the destruction of the filter fabric, which can cost up to 100,000 @@ in large systems.

Selbstverständlich ist die Erfindung nicht auf die vorstchend im einzelnen dargestellten und beschrichenen Ausbildungsformen heschrärkt, sondern es sind zahlreiche Abänderungen möglich, obne jedoch von dem Grundgedanken abzuweichen, sinen Filter 1, wie in der Beichnung dargestellt, zusätzlich mit einer Ventilator 2 zu verscher, der über einen Bypass 3, der mit einer Begulierklappe 4 versehen ist, und einen Thermostaten 5 die erforderlichen a) öffnungsvorgänge der Sekundärluftklappe und b) Einschalten des Ventilators bewirkt, so daß eine Vernichtung des Filtermaterials ausgeschlossen ist.Of course, the invention is not limited to the above in detail The forms of training shown and described are rather numerous Modifications are possible, although deviating from the basic idea, sinen filter 1, as shown in the name, also to be sheared with a fan 2, the bypass 3, which is provided with a flap 4, and a Thermostats 5 the necessary a) opening processes of the secondary air flap and b) Switching on the fan causes, so that a destruction of the filter material is excluded.

P a t e n t a n s p r ü c h e :P a t e n t a n s p r ü c h e:

Claims (1)

Anspruch 1: Verfahren zum Schutze von Heißgasfiltern dadurch gekennzeichnet, daß ein Thermostat in Verbindung mit einem Bypass und einer am Bypass angebrachten Drosselklappe gemeinsam Ventilator und Drosselklappe steuert und Kaltluft bei übertemperatur in das System angesaugt wird, wobei nur eine geringfügige Filtergewebeerweiterung durch höhere Beaufschlagung von Luft Stattfindet, jedoch die angesaugte Sauberluft wohl eine Kühlung, jedoch keine spezifische Schmutzbelastung bringt und die Absaugmenge am Heißgassauganschluß voll erhalten bleibt, da die Heißgasventilatoren eine geringfügige zeitliche überbelastung, bezogen auf den erforderlichen Unterdruck, für die größeren durch den Filter zu saugenden Gasmengen aufnshren können.Claim 1: A method for protecting hot gas filters, characterized in that that a thermostat in conjunction with a bypass and one attached to the bypass Throttle valve jointly controls fan and throttle valve and cold air in the event of excess temperature is sucked into the system, with only a slight widening of the filter fabric Takes place through higher exposure to air, but the sucked in clean air probably a cooling, but does not bring any specific pollution and the suction volume is fully retained at the hot gas suction connection, since the hot gas fans have a slight temporal overload, based on the required negative pressure, for the larger ones can absorb gas quantities to be sucked in through the filter. Anspruch 2: Vorrichtung zur Durchführung des Verfahrens gekennzeichent durch einen Bypass mit thermischer Klappensteuerung und einem Zusatzventilator, der ebenfalls über die thermische Klappensteuerung an- oder abgeschaltet wird, das gleichbedeutend mit Zu- oder Aufmachen der Klappe das Bypasses ist. Claim 2: marked device for performing the method through a bypass with thermal flap control and an additional fan, which is also switched on or off via the thermal flap control, the The bypass is equivalent to closing or opening the flap. Patentansprüche: L e e r s e i t ePatent claims: L e r s e i t e
DE2400351A 1974-01-04 1974-01-04 Protective device for hot gas filter - being thermostatically controlled auxiliary fan giving bleed of clean cold air Pending DE2400351A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE2400351A DE2400351A1 (en) 1974-01-04 1974-01-04 Protective device for hot gas filter - being thermostatically controlled auxiliary fan giving bleed of clean cold air

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2400351A DE2400351A1 (en) 1974-01-04 1974-01-04 Protective device for hot gas filter - being thermostatically controlled auxiliary fan giving bleed of clean cold air

Publications (1)

Publication Number Publication Date
DE2400351A1 true DE2400351A1 (en) 1975-07-10

Family

ID=5904164

Family Applications (1)

Application Number Title Priority Date Filing Date
DE2400351A Pending DE2400351A1 (en) 1974-01-04 1974-01-04 Protective device for hot gas filter - being thermostatically controlled auxiliary fan giving bleed of clean cold air

Country Status (1)

Country Link
DE (1) DE2400351A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2515527A1 (en) * 1981-10-30 1983-05-06 Stavby Silnic Zeleznic Np

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2515527A1 (en) * 1981-10-30 1983-05-06 Stavby Silnic Zeleznic Np

Similar Documents

Publication Publication Date Title
DE2400351A1 (en) Protective device for hot gas filter - being thermostatically controlled auxiliary fan giving bleed of clean cold air
DE602004005472T2 (en) METHOD FOR DISCONNECTING GASES FROM A GAS MIXTURE AND DEVICE FOR APPLYING SUCH A METHOD
DE2412446A1 (en) Conveyor drier for goods from an offset printing press - where a heat exchanger can receive part of the flue gas containing air for reheating
DE3209541A1 (en) Baking oven
EP0603537A1 (en) Smoke extracting hood
DE2347335A1 (en) VENTILATION DEVICE FOR PASSENGER VEHICLES, IN PARTICULAR COMBAT CARS, SANITARY CARS, COMMAND CARS OR DGL.
DE102015107845A1 (en) Systems and methods for using ventilation exhaust air from a gas turbine room
EP0886112A3 (en) Combined fume extracting and air-conditioning hood
DE202017004982U1 (en) Particulate matter and air pollutants Filter system with CO2-guided fresh air supply and pressure-regulated indoor air
DE102017112329A1 (en) Hood
DE888219C (en) Ventilation of closed common areas of vehicles
EP0151436B1 (en) Air-conditioning device for spaces
DE1165434B (en) Ventilation device for passenger vehicles, especially combat vehicles, ambulance vehicles, command vehicles or the like.
DE2719499C3 (en) Induction device for a high pressure air conditioning system
DE2166287B2 (en) Air intake duct and exhaust duct unit for a gas burner system with external draft
DE3127680A1 (en) Self-aerated extractor
EP3333491A2 (en) Extractor hood
DE19543902C1 (en) Cooling air system
AT393092B (en) DEVICE FOR CLEANING THE AIR OF INDIVIDUAL ROOMS
DE377613C (en) Switching device from underwind to chimney draft in boiler firing by means of a closing element leading the underwind for the air inlet opening
DE202021001109U1 (en) Ventilation device for air exchange between a room and the surroundings of this room
DE396138C (en) Fire protection device for cinematographs
DE344343C (en)
DE2027365A1 (en) System for cleaning off hot smoke gases by means of a pocket filter
DE1742050U (en) DEVICE ON WETTED AIR OR GAS FILTERS TO PREVENT THE FREEZING OF THE MAINS FLUID.