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Method and apparatus for pneumatically forming mixture in premix burner and inlet forestage for burner

A technology of burners and mixtures, applied in the field of aerodynamically forming stable mixtures, devices, and situations, which can solve problems such as insufficient burners and system shutdown

Pending Publication Date: 2022-02-22
威能有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, the flow of combustion gas mixed into the air flow tends to be zero, and thus not enough combustion gas can be supplied to the burner for combustion, which can lead to undesired consequences and even system shutdown

Method used

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  • Method and apparatus for pneumatically forming mixture in premix burner and inlet forestage for burner
  • Method and apparatus for pneumatically forming mixture in premix burner and inlet forestage for burner

Examples

Experimental program
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Embodiment Construction

[0018] figure 1 The device according to the invention, namely the heating device 1 , is shown schematically with details which are crucial for understanding the invention. The blower 2 sucks in ambient air via an air suction duct 4 and delivers it to the burner 3 . Behind the blower 2 and in front of the burner 3 , the air flows through a throttle 6 , in particular in the form of a Venturi nozzle, in which the combustion gas is mixed with the air flow. The combustion gas passes from the supply line via the combustion gas shut-off valve 5 to the combustion gas regulating valve 9 at the supply pressure Pin and from there to the throttle point 6 at the outlet pressure Pout. The combustion gas regulating valve 9 is connected to a reference pressure measuring point 13 via a control line 14 . The reference pressure Pref obtained there determines whether and to what extent the combustion gas control valve 9 is opened in order to mix a quantity of combustion gas corresponding to the...

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Abstract

The invention relates to a method and a device for pneumatically forming a mixture for a burner (3) by means of a blower (2) for generating an air flow. The air flow is fed from a throttle point (6) to the burner (3), and the combustion gases can be mixed before or in the throttle point (6) via a combustion gas control valve (9); a reference pressure measuring point (13) is located between the blower (2) and the throttle point (6) in an air-flow-influencing inlet preceding stage (8) upstream of the throttle point (6) and is connected to the combustion gas control valve (9) via a control line (14). According to the invention, a reduced reference pressure (Pref) can be obtained in the heating device (1) for regulating the combustion gas supply, so that the pressure loss in the exhaust gas discharge device (10) of the heating device (1) does not negatively affect any more.

Description

Background technique [0001] The invention relates to a method and a device for aerodynamically forming a stable mixture in a premix burner for combusting combustion gases and ambient air. Known burners, in particular in so-called gas burner / gas condensing boilers, are supplied with ambient air by blowers / fans and mixed with a predeterminable amount of combustion gas via a combustion gas control valve. The invention relates to a device in which mixing of fuel on the pressure side of a blower takes place. This mixture is then ignited in a combustion chamber and subsequently used in a steady controlled combustion to generate heat, usually to provide hot water and / or heat to a heating system. The mixture of air and combustion gas burns safely and environmentally friendly only when the mixture ratio of air to combustion gas (air coefficient λ / Lambda) is in a flammable and environmentally friendly range. If this is not the case, then possibly (parts of) unburned combustion gases g...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23D14/62F23D14/46
CPCF23D14/62F23D14/46F23D2203/007F23D14/02F23K2400/201F23K2900/05001F23D14/60F23N2225/06F23N1/027F23N2233/08
Inventor 安德烈亚斯·赖纳特马蒂亚斯·霍夫克劳斯·里希特
Owner 威能有限公司
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