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    • 3. 发明公开
    • Valve
    • EP1508758A1
    • 2005-02-23
    • EP04019558.8
    • 2004-08-18
    • A/S Dybvad Stalindustri
    • Tanderup, Svend
    • F25B41/06F16K47/10
    • F16K47/10F16K17/196F25B41/06F25B2341/061
    • For controlling the coolant flow in cooling units in a plate freezer, a valve (6) is inserted that allow normal flow-through in one direction, but only limited flow-through in the opposite direction. The valve is designed with a valve chamber (12) in which is provided a movable valve body (20). In a first position of the valve body (20) (Fig. 2b), the valve body (20) only allows limited flow-through of coolant through a central hole (22). In a second position (Fig. 2a), where the fluid flow has changed to the opposite direction, the valve body (20) is pressed away from its valve seat (23). Due to the size of the valve chamber (12) and the use of legs (21) on the valve body (20), a substantially larger flow-through of coolant is allowed.
      Applied to cooling units of a plate freezer, in the first position the valve acts as a flow resistance, meaning even distribution of coolant in a freezing stage for the cooling unit when coolant is to flow from a distribution chamber to the cooling unit. When the cooling unit (1) is to be defrosted, the coolant is sent the opposite way through the cooling unit (1) through the valve chamber (12) of the valve (6), whereby the valve opens up and allows a rapid flow-through of coolant and thereby a rapid and uniform defrosting of the cooling unit (1).
    • 为了控制板式冷冻机中的冷却单元中的冷却剂流动,插入阀门(6)以允许沿一个方向的正常流通,但是仅在相反方向上有限的流动通过。 该阀设计有一个阀室(12),在该阀室内设有一个可移动的阀体(20)。 在阀体(20)的第一位置(图2b)中,阀体(20)仅允许冷却剂通过中心孔(22)的有限流通。 在流体流动已经改变到相反方向的第二位置(图2a)中,阀体(20)被压离其阀座(23)。 由于阀室(12)的尺寸和阀体(20)上的腿(21)的使用,允许冷却剂的明显更大的流通量。 应用于平板冷冻机的冷却单元时,在第一个位置,阀作为流动阻力,意味着当冷却剂从分配室流向冷却单元时,冷却单元在冷冻阶段的冷却剂均匀分布。 当冷却单元(1)要被除霜,冷却剂通过所述阀(6),由此所述阀打开的所述阀室(12)发送的所述相反的方式通过冷却单元(1),并允许一个快速流 - 通过冷却剂并由此实现冷却单元(1)的快速且均匀的除霜。