AT408028B - Heating device - Google Patents

Heating device Download PDF

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Publication number
AT408028B
AT408028B AT131298A AT131298A AT408028B AT 408028 B AT408028 B AT 408028B AT 131298 A AT131298 A AT 131298A AT 131298 A AT131298 A AT 131298A AT 408028 B AT408028 B AT 408028B
Authority
AT
Austria
Prior art keywords
heating
cylinder
sound
diameter
intake line
Prior art date
Application number
AT131298A
Other languages
German (de)
Other versions
ATA131298A (en
Original Assignee
Vaillant Gmbh
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 Vaillant Gmbh filed Critical Vaillant Gmbh
Priority to AT131298A priority Critical patent/AT408028B/en
Priority claimed from DE19927226A external-priority patent/DE19927226A1/en
Priority claimed from DE29924686U external-priority patent/DE29924686U1/en
Publication of ATA131298A publication Critical patent/ATA131298A/en
Application granted granted Critical
Publication of AT408028B publication Critical patent/AT408028B/en

Links

Abstract

Heating device with a burner fed by a blower 3, the said heating device being provided with an air-intake line 5, in which is provided a silencer 6 formed essentially by a cylinder 8 which is produced from a perforated plate and to which a sound-absorbing material 12 is applied, there being provided as mechanical protection a tube 13 which surrounds the sound-absorbing material 12, a cylinder 8 produced from a perforated plate being surrounded by a leak-tight plastic film 9. <IMAGE>

Description


   <Desc / Clms Page number 1>
 



   The invention relates to a heating device according to the preamble of claim 1
Vibrations of individual, discrete frequencies occur again and again in such heating devices, which lead to a very considerable noise development. Since now heaters with premixing burners often not only in remote rooms, such as. Basements or attics, but also installed in apartments, this type of noise represents a considerable burden.



   From GB 2 241 052 A and JP 08 260 039 A, it is known to use an air intake line
Water heater to install a silencer in the fuel and air supply yard to the burner. It is also known that such a silencer consists of a perforated tube which is surrounded by a hollow body which has a sound-absorbing material which surrounds the openings of the inner tube and is in turn held by a larger tube jacket.



   The aim of the invention is to propose a heating device of the type mentioned in the introduction, the noise development of which is further minimized.



   According to the invention this is achieved in a heating device of the type mentioned at the outset by the characterizing features of claim 1. The proposed measures ensure that conspicuously occurring discrete vibrations, which can be found both in strong clay
Making noise as well as noticeable through individual tones, are largely dampened, whereby the sound-absorbing material, for example mineral wool or foam, also achieves general sound insulation.



   Furthermore, there is the advantage that by an applied to the cylinder from perforated sheet z. B. shrunk film, the z. B. can be made of plastic, the sound absorbing
Material is protected from possible impurities in the intake air and, if discrete vibrations occur, energies can be consumed by stretching and contracting the film. The features of the first dependent claim result in the advantage that the cross section of the air intake line remains unchanged
Due to the features of the dependent claims 2 and 3. there is scope for design regarding the pressure conditions in the further course of the air intake line.



   The characteristics of the last dependent patent claim make it possible to optimize the noise reduction behavior.



   Two exemplary embodiments of the invention will now be explained in more detail with reference to FIGS. 1-4 of the drawing. Show:
1 schematically shows a heating device according to the invention,
2 shows a longitudinal section through the muffler,
Fig. 3 shows a cross section through a variant of the silencer and
Fig. 4 shows an example of the damping of a discrete vibration.



   The heating device according to the invention has a combustion chamber 1, in which a burner (not shown) and a heat exchanger are arranged. The combustion chamber 1 and thus the burner are connected via a pressure line 2 to a blower 3, which in turn is connected to a gas line 4. Furthermore, the blower 3 is connected to the environment via an air intake line 5, in which a muffler 6 is integrated. A line 7 is used for exhaust gas discharge.



   As can be seen from FIG. 3, the muffler 6 has a cylinder 8 made of a perforated plate, which is surrounded by a plastic roller 9.



   The film 9 can loosely enclose the cylinder 8, but can also be shrunk onto it.



   According to FIG. 2, the cylinder 8, on which the film 9 is missing, is provided at its two ends with inlet connector 10 and outlet connector 11, the outlet connector 11 in turn being connected to the line 5.



   About the cylinder 8 is a layer of sound-absorbing material 12, for. B. mineral wool, which in turn is surrounded by a tube 13 for protection against mechanical influences.



   The position of the damper 6 along the air intake line 6 can be determined as desired, without the operation of the damper 6, as shown in FIG. 4, being significantly impaired
The inside diameter of the cylinder 8 is expediently chosen to be the same as that of the tube 5, but it can also be larger for reasons that are not the subject of the patent description

 <Desc / Clms Page number 2>

 or selected smaller, without this action also significantly impairing the operation of the steamer 6.



   The effect of the muffler 6 begins as soon as its overall length is at least equal to the inside diameter of the suction line 5.



   In Flg. 4 shows, by way of example, the sound level reduction when a heating device is in operation, curve 14 showing the sound pressure level without a damper and curve 15 those with a damper. The level reduction in the range from 448 to 452 Hz is more than 50 dB.



   Such a damper makes it possible to largely avoid noise pollution from discrete frequencies when the heating device is in operation.



   PATENT CLAIMS:
1. Heating device, with a burner fed by a blower (3), which with an air
Suction line (5) is provided, in which a silencer (6) is provided, which is essentially formed by a cylinder (8) made of a perforated plate, on which a sound-absorbing substance (12) is applied, with mechanical protection a pipe (13) enclosing the sound-absorbing substance (12) is provided, characterized in that the cylinder (8) made of perforated sheet metal is surrounded by a dense plastic film (9).

Claims (1)

  1.  2. Heating device according to claim 1, characterized in that the inner diameter of the cylinder (8) made of perforated sheet metal is equal to the inner diameter of the air intake line (5).
     3. Heating device according to claim 2, characterized in that the inner diameter of the cylinder (8) is smaller than the inner diameter of the air intake line (5).
     4. Heating device according to claim 3, characterized in that the inner diameter of the cylinder (8) is larger than the inner diameter of the air intake line (5).
     5. Heating device according to claim 1 or 4, characterized in that the overall length of the muffler (6) is at least equal to the inner diameter of the air intake line (5).
AT131298A 1998-07-30 1998-07-30 Heating device AT408028B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT131298A AT408028B (en) 1998-07-30 1998-07-30 Heating device

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AT131298A AT408028B (en) 1998-07-30 1998-07-30 Heating device
DE19927226A DE19927226A1 (en) 1998-06-12 1999-06-10 Sound damping for fuel fired heater
DE29924686U DE29924686U1 (en) 1998-06-12 1999-06-10 Sound damping for fuel fired heater

Publications (2)

Publication Number Publication Date
ATA131298A ATA131298A (en) 2000-12-15
AT408028B true AT408028B (en) 2001-08-27

Family

ID=3511174

Family Applications (1)

Application Number Title Priority Date Filing Date
AT131298A AT408028B (en) 1998-07-30 1998-07-30 Heating device

Country Status (1)

Country Link
AT (1) AT408028B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1635116A3 (en) * 2004-09-09 2006-04-05 Robert Bosch Gmbh Heating appliance with a sound insulated intake system
EP1912021A1 (en) * 2006-10-06 2008-04-16 Jakob Hermann Combustion chamber equipped with a burner

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2241052A (en) * 1990-02-01 1991-08-21 Imi Range Ltd Water heating apparatus including a silencer

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2241052A (en) * 1990-02-01 1991-08-21 Imi Range Ltd Water heating apparatus including a silencer

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1635116A3 (en) * 2004-09-09 2006-04-05 Robert Bosch Gmbh Heating appliance with a sound insulated intake system
EP1912021A1 (en) * 2006-10-06 2008-04-16 Jakob Hermann Combustion chamber equipped with a burner

Also Published As

Publication number Publication date
ATA131298A (en) 2000-12-15

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Legal Events

Date Code Title Description
REN Ceased due to non-payment of the annual fee
MM01 Lapse because of not paying annual fees

Effective date: 20121215