公开(公告)号：EP0715553B1

公开(公告)日：1997-05-07

申请号：EP94925359.5

申请日：1994-08-22

Applicant: Danfoss A/S

Inventor： VESTERGAARD, Anders ,  HANSEN, Jens, Jorn ,  DENNING, Henrik, Thomas

IPC: B21K1/20

CPC classification number: F25B41/062

Abstract: In a valve, in particular an expansion valve for refrigerating systems, at least the housing (2) and all connecting pieces (3, 4, 5) are deep-drawn parts made of stainless steel with less than 0.006 % C, preferably less than 0.05 % C. These pieces are joined by welding. The steel is so low in carbon that despite the heat treatment in welding it is practically insensitive to intercrystalline corrosion. This yields a valve that is environmentally acceptable and visually attractive.

公开(公告)号：EP2225502B1

公开(公告)日：2011-05-25

申请号：EP08850589.6

申请日：2008-11-12

Applicant: Danfoss A/S

Inventor： VESTERGAARD, Anders ,  SPANGBERG, Jakob ,  THOMSEN, Benjamin ,  NIELSEN, Kirsten, Bladt

IPC: F25B41/06

CPC classification number: F25B41/062 ,  F25B2341/0681

Abstract: A thermal expansion valve (1) for a refrigeration system comprises a working element (9) with a diaphragm (15) clamped between a cover plate (12) and a cover ring (10). The diaphragm is a multiple-diaphragm comprising two or more individual diaphragms (16, 17). This makes the multiple-diaphragm more flexible than a single diaphragms and increases the lifetime of the diaphragm. The individual diaphragms are separated by an anti-friction layer to protect against tear, the anti-friction layer can be grease or oil placed between the individual diaphragms or it can be a layer of coating on the diaphragms.

公开(公告)号：EP0715553A1

公开(公告)日：1996-06-12

申请号：EP94925359.0

申请日：1994-08-22

Applicant: Danfoss A/S

Inventor： VESTERGAARD, Anders ,  HANSEN, Jens, Jorn ,  DENNING, Henrik, Thomas

IPC: F16L55 ,  B23K1 ,  C22C38 ,  F16K11 ,  F16K27 ,  F25B41

CPC classification number: F25B41/062

Abstract: In a valve, in particular an expansion valve for refrigerating systems, at least the housing (2) and all connecting pieces (3, 4, 5) are deep-drawn parts made of stainless steel with less than 0.006 % C, preferably less than 0.05 % C. These pieces are joined by welding. The steel is so low in carbon that despite the heat treatment in welding it is practically insensitive to intercrystalline corrosion. This yields a valve that is environmentally acceptable and visually attractive.

公开(公告)号：EP0714488A1

公开(公告)日：1996-06-05

申请号：EP94925358.0

申请日：1994-08-22

Applicant: Danfoss A/S

Inventor： VESTERGAARD, Anders ,  HANSEN, Jens Jörn ,  DENNING, Henrik Thomas

IPC: B23K1 ,  C23C30 ,  F16L13

CPC classification number: F16L13/08 ,  Y10T29/49425 ,  Y10T137/0447 ,  Y10T137/0486 ,  Y10T137/598

Abstract: A valve (1), which has heat-sensitive parts, has at least one connecting tube (3, 4, 5) to which a pipe is arranged to be soldered using local heating. The connecting tube (3, 4, 5) consists of a material of such low thermal conductivity that the heat-sensitive parts remain below the limit temperature as the heat required for soldering is applied. No cooling measures are therefore needed while the pipe is being joined by soldering.