Patent ID: 6178766
Filing Date: 2001-01-30
Classification: F24F,F28D,F28F,Y02B

Abstract:
A kind of air conditioner with high-efficiency differential cold-valley pipes comprises differential cold-valley pipes J1 and J2 and a low pressure pump M, characterized in that:A. In the heat exchanger J1 pipe: Multiple-layer J1 strips and multiple-layer corrugated fin step corrugations (31) are stacked alternately and tightly clamped up into frames composed of rib-shaped clamping plates (3) and tie rods (4), at the contact places of said clamping plates (3) and step corrugations (31) there are buffer cushions (18), the step ducts F' in vertical parallel arrangement to approximate a rectangle formed by step corrugations (31) and said J1 strips (30) are in a flow direction of S shape, on each vertical wall surface of said step corrugations are cut out several long and strip-shaped heat insulating ports (17), at both ends of each step corrugation (31) is a rectangled pad (7), the step corrugations (31) are made of thin aluminum sheet or hydrophilic aluminum sheet, each J1 strip (30) has a t1 working substance evaporating temperature.about.tn working substance return vapor temperature continuously temperature changing working substance flow passage formed by inserting inner corrugated plates (15) made of thin aluminum sheet into 2-5 metallic copper or aluminum flat tubes (14) arranged in parallel spacing and connected in series, at each turn of flow of said working substance flow passage there is a curved conduit (6), the flat tube (14) end at the inlet and outlet of working substance flow passages are respectively connected with incoming liquid branch tube (23) and suction vapor branch tube (27), the Suction vapor branch tube (27) after being connected in parallel with parallel connecting tube or distributor (28) is connected again with suction vapor tube (29), the incoming liquid branch tube (23) after being connected in parallel with distributor (24) is again connected with the capillary tube (25), the capillary tube (25) is connected with the liquid supply tube (13);B. In the heat exchanger J2 pipe: The Multiple-layer J2 strips (1) and multiple-layer corrugated fin step membrane corrugations (2) are stacked alternately and tightly clamped up into frames composed of rib-shaped claming plates (3) and tie rods (4), at the contact places of said clamping plates (3) and membrane corrugations (2) there are buffer cushions (18), the step ducts F in vertical and parallels arrangement to approximate a rectangle formed by membrane corrugations (2) and said J2 strips (1) are in a flow direction of S shape, on each vertical wall surface of membrane corrugations (2) are cut out several long and strip-shaped heat insulating ports (17), at both ends of each membrane corrugation (2) there is a rectangled pad (7), each J2 strip has a t'n working substance vapor discharging temperature of the low pressure pump.about.t'1 liquid state working substance temperature after condensation continuously temperature changing working substance flow passage formed by inserting inner corrugated plates (15) made of thin aluminum sheet into 2-5 metallic copper or aluminum flat tubes (14) arranged in parallel spacing and connected in series, at each turn of flow of said working substance flow passage there is a curved conduit (6), the flat tube (4) ends at the inlet and outlet of working substance flow passages are connected respectively with an incoming vapor branch tube (8) and outgoing liquid branch tube (11), the incoming vapor branch tube (8) after being connected in parallel with parallels connecting tube or distributor (9) is connected again with incoming vapor tube (10), the outgoing branch tube after being connected in parallel with the distributor or parallel connecting tube (12) is again connected with a liquid supplying tube (13), outside the flat tubes (14) arranged in parallel spacing are wrapped membrane type evaporating surfaces (16), between membrane evaporating surfaces (16) and flat tubes (14) are inserted water-carrying yarns (20), the membrane corrugations (2) are corrugated fins made of thin aluminum sheet or metallic wire mesh adhered with non-woven fabric on both surfaces, and with thin aluminum sheet or metallic wire mesh inside to form supporting frame step corrugations (21) and with its surfaces to form step membranes (22), the water-carrying yarns (20), step membranes (22), membrane type evaporating surfaces (16) are made of corrosion resistant non-woven fabric adhesive-bonded fabric with extra high water-carrying and water absorbing capacity;C. The low pressure pump M is connected between the vapor suction tube (29) leading to J1 pipe and the incoming vapor tube (10) leading to J2-pipe, the heat pump type is connected with a four-way conversion valve in between, the low pressure pump M will work between a rather low condensing pressure P2 and a rather high evaporating pressure P1 and can jointly convey liquid and vapor; the maximum refrigerating/heat generating capacity can be obtained when the circulating working substance is a single or mixed azeotropy working substance, the {character pullout}-form circulation and all fresh air 8-form circulation can be run at the highest circulation efficiency when the circulating working substance is a working substance pair composed of refrigerant and absorbent.