公开(公告)号：JPH02230052A

公开(公告)日：1990-09-12

申请号：JP144290

申请日：1990-01-08

Applicant: WEBASTO AG FAHRZEUGTECHNIK

Inventor： PEETAA KOTSUKU ,  GIYUNTAA KAANAU ,  PEETAA GURASERU ,  GEORUGU HAPERU ,  SUTEFUAN KUNTSU ,  BERUNHARUTO ZOMATERUKA

IPC: F24H9/18 ,  F23C7/00 ,  F23D3/40

Abstract: PURPOSE: To supply a more preferable combustion air flow to a burner, so that, particularly, the capacity of the burner may be optimized and the environmental pollution may be reduced, by making the combustion air flow in the space section formed of sleeve members surrounding a burner member on the way to a combustion chamber. CONSTITUTION: In a heating device, sleeve members 14 form an annular space section which works as a combustion air chamber 15 around a burner member 10, so that the volume of the space section may become adaptive to a desired heating device shape to optimize the combustion characteristic of the burner. In addition, since the prescribed air quantity of the chamber 15 is fundamentally independent from the size and design of a burner head housing section 2a, the heating device can be operated quietly by avoiding such an air quantity having a tendency to generate vibrations. Moreover, since a housing member 2 and the burner head housing section 2a can be separated thermally from the burner member 10 by means of the sleeve members 14, the burner member 10 is hardly affected by the temperature of the housing member 2.

公开(公告)号：JPH01269856A

公开(公告)日：1989-10-27

申请号：JP5184589

申请日：1989-03-03

Applicant: WEBASTO AG FAHRZEUGTECHNIK

Inventor： KAARU GUREEBE ,  PEETAA GURASERU ,  GEORUGU BATSUHARU

IPC: F24H1/12 ,  F24H1/26 ,  F24H9/00

Abstract: PURPOSE: To enhance heat exchanging efficiency while making compact a heat exchanger by providing a combustion chamber surrounded by a heat exchanger having inner fins wherein the heat exchanger of a heating device surrounded by heat transfer liquid flow has a quadrangular design and a flat bottom. CONSTITUTION: Inner fins 9 extend radially inward and each fin has a free end 11 located on a circle having center representative of the central axis 12 of a heat exchanger 3 and the combustion chamber 2 of a heater 1. Consequently, the free ends 11 of the inner fins 9 define an inner space 13 of substantially circular cross-section in the heat exchanger 3. The inner space 13 contains the combustion chamber 2 defined by combustion tubes 14. Various types of baffle 21 exist on the outer wall surface of a heat exchanger defining a flow passage 22 for liquid heat exchanging medium 5 formed between adjacent pairs of battle 21 for guiding the flow of the medium 5. Major part (about 80%) of the flow of the medium 5 entering through an inlet area 19 passes directly to the closed end 8 of the heat exchanger 3 and the remaining 20% passes to the outer wall surface thereof.