Water removing device in refrigerating system
AssigneeNippondenso Co., Ltd.
InventorsKeiichi Kitamura, Shin Honda, Hisayoshi Sakakibara
Life of this patent
Estimating the term…
Abstract
There is used a refrigerant which is lower in a saturated water concentration in gas phase than in liquid phase, such as, for example, Freon-134a or Freon-22. In a body block 46 of a box-shaped expansion valve there are formed by-passes 77, 81 and 86 for by-passing a portion of the refrigerant evaporated in an evaporator 41. Halfway in the by-passes 77, 81 and 86 a cooling cylinder 73 is disposed for cooling the refrigerant present in those by-passes, and further a filter 83 is disposed for collecting the water contained in the refrigerant. In addition, a water permeating membrane 88 is disposed in a water discharge passage 79 formed in the body block 46.
Claims8
A water removing device for a refrigerating system including a compressor, a condenser, a receiver, an expansion valve and an evaporator, said device comprising:
- a body block integrally forming said expansion valve therein and formed with a pair of refrigerant passages, one passage connecting said receiver to said evaporator and the other passage connecting said evaporator to said compressor;
- first bypass passage means provided in said body-block for leading a portion of a refrigerant entering into said other passage toward said one passage;
- a cooling cylinder fitted in said one passage and having an inner passage for a refrigerant flow from said receiver to said evaporator and an outer passage connected to said first bypass passage means for allowing said portion of said refrigerant from said other passage to flow therethrough so that said portion of refrigerant is cooled and water is separated therefrom;
- second bypass passage means provided in said body block and connected at an outlet side to said outer passage of said cooling cylinder;
- and
- filter means provided in said body block at an outlet side of said second bypass passage means for collecting therein said water separated by said cooling cylinder so that said portion of refrigerant is passed therethrough and further including returning means for returning said portion of said refrigerant to said other passage.
A water removing device for a refrigerating system using a refrigerant of which saturated water concentration in gas phase is lower than in liquid phase, said device comprising:
- an evaporator for evaporation of said refrigerant;
- bypass passage means for bypassing a portion of said refrigerant evaporated by said evaporator;
- cooler means provided in said bypass passage means for cooling said bypassed refrigerant by said refrigerant flowing into said evaporator and separating water from said bypassed refrigerant;
- water collector means provided downstream of said bypass passage for collecting said separated water and passing only said bypassed refrigerant;
- and
- water permeable membrane means provided to separate said bypass passage from an atmosphere for purging only said collected water into said atmosphere when said refrigerant system is turned off to an inoperative condition,
- said bypass passage means, said cooler means, said water collector means and said water permeable membrane means being integrated in a single unit.
Dependencies are inferred from the claim text.