초록 ▼

Valve arrangement, in particular as pulse width modulated expansion valve of a refrigeration system, comprising the following elements: a valve body (1) with a passage opening (5), an armature tube (2) which is inserted into one end of the passage opening (5), an armature (3) which can be moved back

Valve arrangement, in particular as pulse width modulated expansion valve of a refrigeration system, comprising the following elements: a valve body (1) with a passage opening (5), an armature tube (2) which is inserted into one end of the passage opening (5), an armature (3) which can be moved back and forth in the armature tube (2), a stationary armature core (4) which is inserted into the outwardly lying end of the armature tube (2), a restoring element (22) which is active between the movable armature (3) and the stationary armature core (4), a closure element (18) which is carried by the movable armature (3) and which cooperates with a passage opening (17) for opening and closing the valve arrangement as well as comprising a magnetic coil for actuating the valve arrangement, with a ring space (19) being formed between the armature tube (2) and the movable armature (3), the opening cross-section of which is dimensioned in such a manner that the space (20) which is formed between the movable armature (3) and the stationary armature core (4) acts as a damping chamber, through which the opening and closing movement of the movable armature (3) is damped. The forming of the pass-fit damping directly between the armature tube (2) and the movable armature (3) is advantageous in the technical manufacturing.

대표청구항 ▼

1. Valve arrangement, in particular a pulse width modulated expansion valve of a refrigeration system, comprising:a valve body with a flow passage extending between inlet and outlet openings; a valve seat which is arranged in the flow passage and has a first passage opening for a medium to be contro

1. Valve arrangement, in particular a pulse width modulated expansion valve of a refrigeration system, comprising:a valve body with a flow passage extending between inlet and outlet openings; a valve seat which is arranged in the flow passage and has a first passage opening for a medium to be controlled; a movable closing element which is arranged in the valve body and cooperates with the valve seat for opening and closing the valve arrangement; and a second additional, constantly completely open passage opening arranged in the flow passage which is provided as an insert and is formed as a replaceable exchange nozzle, the cross section of which determines the capacity of the valve arrangement.