US 9,810,458 B2
Falling film evaporator
Keita Hattori, Sakai (JP); and Shun Yoshioka, Sakai (JP)
Assigned to Daikin Industries, Ltd., Osaka (JP)
Appl. No. 15/320,739
Filed by DAIKIN INDUSTRIES, LTD., Osaka-shi, Osaka (JP)
PCT Filed Jun. 30, 2015, PCT No. PCT/JP2015/068839
§ 371(c)(1), (2) Date Dec. 20, 2016,
PCT Pub. No. WO2016/002784, PCT Pub. Date Jan. 7, 2016.
Claims priority of application No. 2014-136331 (JP), filed on Jul. 1, 2014.
Prior Publication US 2017/0138652 A1, May 18, 2017
Int. Cl. F25B 39/02 (2006.01); F25B 39/00 (2006.01)
CPC F25B 39/00 (2013.01) [F25B 39/028 (2013.01); F25B 2339/021 (2013.01); F25B 2500/28 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A falling film evaporator used in a refrigeration apparatus, the falling film evaporator comprising:
a heat transfer tube bundle with a heat medium channeled to an interior thereof, the heat transfer tube bundle having a plurality of longitudinally extending heat transfer tubes;
a tank with the heat transfer tube bundle disposed therein, the tank being provided with a refrigerant inflow port;
a liquid refrigerant sprinkling part arranged to drop liquid refrigerant, which is contained in gas/liquid two-phase refrigerant supplied into the refrigerant inflow port, onto the heat transfer tube bundle;
a vapor outlet tube extending from an upper part of the tank;
a cover having a portion positioned in a location inside the tank and higher than the liquid refrigerant sprinkling part; and
an impeding member provided between the liquid refrigerant sprinkling part and the cover at a different position than the vapor outlet tube along the longitudinal direction of the heat transfer tubes, and the impeding member impeding the flow of refrigerant that flows between the liquid refrigerant sprinkling part and the cover and flows in the longitudinal direction of the heat transfer tubes,
the impeding member extending downward from a lower surface of the cover.