Liquid heaters and vaporizers – Stand boiler – Heated by liquid or steam
Reexamination Certificate
2008-01-08
2008-01-08
Lu, Jiping (Department: 3749)
Liquid heaters and vaporizers
Stand boiler
Heated by liquid or steam
C122S459000, C237S067000
Reexamination Certificate
active
11257908
ABSTRACT:
In a steam-heating apparatus in which a heating section formed in a heat exchanger is connected to a steam supply pipe for receiving a supply of heating steam and connected also to a condensate recovering unit for discharging condensate produced as a result of heating, the apparatus includes a steam ejector including a suction chamber connected to the heating section and an inlet for receiving supply of steam. When the temperature of the heating section or between the heating section and the condensate recovering unit is dropped by a predetermined value, steam is supplied from the steam supply pipe to the inlet of the steam ejector, and gas in the heating section is sucked into the suction chamber of the steam ejector.
REFERENCES:
patent: 2954840 (1960-10-01), Freneau
patent: 5209284 (1993-05-01), Okamoto et al.
patent: 6420167 (2002-07-01), Okamoto et al.
patent: 6739288 (2004-05-01), Kumamoto
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patent: 09-250887 (1997-09-01), None
patent: 11-318543 (1999-11-01), None
Lu Jiping
The Webb Law Firm
TLV Co. Ltd.
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