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.

公开(公告)号：JPH04227408A

公开(公告)日：1992-08-17

申请号：JP10101791

申请日：1991-05-02

Applicant: WEBASTO AG FAHRZEUGTECHNIK

Inventor： KAARU GUREEBE ,  KAARU PANITSUKU

IPC: F23N1/00

Abstract: PURPOSE: To provide a process for operating a burner fed with liquid fuel in which operating time of the burner can be prolonged without causing any failure. CONSTITUTION: A process for operating a burner 2 fed with liquid fuel, in particular a vaporization burner of a heater in which preferably, a motor add-on heater is involved. In the operating method, after the burner has been in steady state operation for a predetermined time period, the fuel feed is briefly interrupted. The predetermined time period of steady state operation of the burner is preferably about 5 to 20 minutes, while the fuel feed is interrupted for about 5 to 25 seconds. With this operating process, deposits on the burner can be reduced so that the service life of the burner can be considerably increased.