Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
  • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
  • F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
  • F25B43/003—Filters
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
  • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
  • F25B39/00—Evaporators; Condensers
  • F25B39/04—Condensers
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
  • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
  • F25B2339/00—Details of evaporators; Details of condensers
  • F25B2339/04—Details of condensers
  • F25B2339/044—Condensers with an integrated receiver
  • F25B2339/0441—Condensers with an integrated receiver containing a drier or a filter

Definitions

• the invention relates to a soldered refrigerant condenser, which consist of a heat exchanger network with flat tubes and corrugated fins, from collecting tubes which are in fluid communication with the flat tubes, and from a collector arranged parallel to a collecting tube and comprising a dryer and / or a filter takes up and is in fluid communication with the collector via two overflow openings - such a condenser is known from EP 0 669 506 A1 by the applicant.
• This known condenser is a so-called condenser module, in which a collector is arranged in parallel to one of the header pipes, said collector having two overflow openings . is connected to the manifold.
• the refrigerant passes from the collector pipe into the collector, where there is a dryer, ie a container, usually made of plastic, which is filled with a dryer granulate for dehydrating the refrigerant.
• a dryer ie a container, usually made of plastic, which is filled with a dryer granulate for dehydrating the refrigerant.
• the strainer has the task of cleaning the refrigerant from impurities in the form of the finest particles.
• the refrigerant then re-enters the condenser header via the lower overflow opening.
• the condenser can be completely assembled before the soldering process, ie including dryer with dryer material and filter. Subsequent insertion of the dryer / filter insert after soldering is therefore not necessary. Dryer and / or filter can also be glued to the collector during the soldering process, e.g. B. by means of a temperature-resistant adhesive. Likewise, a positive or frictional connection between the dryer / filter unit and the collector can be made before the soldering process, so that the Unit is firmly positioned in the collector and can then be subjected to the soldering process without impairment. A prerequisite for all solutions is that the dryer material is temperature-resistant, ie its function is not impaired by the temperatures of approx. 620 ° C. that occur during the soldering process.
• a positive connection can be made, for example, by the arrangement of annular beads above and below the dryer / filter unit, and a positive connection can be achieved by pressing the housing of the dryer / filter unit into the collector, i. H. is held there by means of a press fit.
• the drying material can either be in the form of granules enclosed in a perforated metal container, or it can be used as a solid mass, e.g. B. as a cylindrical rod, which is connected to the filter insert and thus fixed in the collector by soldering.
• the dryer / filter insert therefore consists of a metallic material, preferably an aluminum alloy, which can be soldered to the collector, which also consists of an aluminum alloy.
• FIG. 1 shows a section of a condenser module with a dryer / filter insert with granular dryer material
• Fig. 2 shows a section of a capacitor module with a dryer / filter insert with a rod-shaped dryer from solid
• Fig. 3 shows a section of a capacitor module with a soldered dryer sleeve and filter screen.
• 1 shows a section of a refrigerant condenser 1 as used in the refrigerant circuit of a motor vehicle for the air conditioning of the passenger compartment.
• This condenser has a manifold 2 (the other is not shown), into which flat tubes 3 open, between which there are corrugated fins 4 which are acted upon by ambient air for heat dissipation.
• a collector 5 is provided parallel to the collector pipe 2 and is in fluid communication with the collector pipe via two overflow openings 8 and 9, between which there is a partition 10 in the collector pipe 2.
• all parts 2, 3, 4, 5 consist of an aluminum alloy and are soldered together in one operation in the soldering furnace.
• a dryer / filter insert 11 is built into the interior 6 of the collector 5: it consists of an upper part, a perforated metallic cage 12, in which the dryer material is enclosed in the form of granules 13.
• the lower part of the insert 11 consists of a filter screen 14, the outer frame 15 of which is adapted to the inner cross section of the collector space 6 and is soldered to it or only mechanically connected.
• the relatively narrow-mesh filter screen 14 forms an approximately coaxial to the collector 5 arranged cylindrical surface, which however leaves a gap 16 to the partition 7.
• the dryer / filter insert 11, consisting of the upper dryer part 12 and the lower filter part 14, is thus introduced and positioned in the interior 6 before the soldering process in such a way that during the subsequent soldering process it is soldered to the inner wall 17 of the collector 5 or only mechanically connected is.
• This insert is then firmly arranged in the collector after the soldering process and can therefore fulfill its function, which is described as follows:
• the refrigerant which has previously flowed through the condenser in a known manner, flows, as indicated by the arrows a and b, through the overflow opening 8 in the wall 7 from the collecting pipe 2 into the interior 6 of the collector 5. There it comes into contact with the metal sleeve 12, flows through the perforation openings 12 'and thus reaches the interior of the sleeve 12, where the granulate 13 is located - this removes the water contained in the refrigerant.
• the granulate 13 is commercially available and resistant to the soldering temperatures that occur when brazing aluminum.
• the refrigerant then flows into the interior of the approximately cylindrical filter screen 14 and passes through the filter screen 14 from the inside to the outside, that is to say approximately in the radial direction and then, as shown by the arrow c, re-enters via the overflow opening 9 in the wall 7 the manifold 2, ie into the chamber 18 below the partition 10. From there it flows through the lowest tubes of the condenser to the outlet of the condenser.
• FIG. 2 Another embodiment of the dryer / filter insert is shown in FIG. 2. It corresponds in all essential parts of the embodiment according to FIG. 1 with the only difference that the dryer is designed as a dryer rod 20 made of a solid dryer mass. This mass contains the well-known dryer material and is also temperature-resistant to the soldering process. This dryer rod 20 therefore has no cage, it is fastened in a manner not shown in the lower filter frame 15.
• a condenser 30 consists of a heat exchanger network 31, which is formed by flat tubes 32 and corrugated fins 33 arranged between them. The ends of the flat tubes 32 open into a header tube 34 and are soldered to it.
• the manifold 34 has a simplified representation of an upper chamber 35 (a further division into several chambers can also be provided) and a lower chamber 36, which is divided by a partition 37.
• a tubular collector 38 is arranged parallel to the collecting pipe 34 and is closed at the end by pressure-resistant and fluid-tight covers 39 and 40, respectively.
• the chamber 35 of the collecting pipe 34 communicates with the interior of the collector 38 via an opening 41, and the lower chamber 36 is in fluid communication with the lower part 43 of the collector 38 via an overflow opening 42.
• a dryer - / Filter insert 45 is arranged, which essentially consists of a perforated, metallic tubular sleeve 46 which is fastened coaxially in the collector 38 while leaving an annular gap 47 by means of two annular flanges 48 and 49 arranged on the end face. Is located within the perforated sleeve 46 Dryer granules 50.
• the tubular sleeve 46 is closed at the end by perforated end plates (not shown). At the lower end of the sleeve 46 there is an additional filter screen 51 on the end face.
• the entire dryer / filter unit 45 including the ring flanges 48, 49, is introduced into the interior of the collecting tube 44 and positioned there before the soldering process of the condenser.
• the collector 38 is then closed by the two lids 39, 40.
• the entire capacitor prepared for the soldering process is then placed in the soldering oven and soldered there.
• the dryer Z filter unit 45 is fully functional, which is done in the following way:

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Thermal Sciences (AREA)
• Physics & Mathematics (AREA)
• Power Engineering (AREA)
• Chemical & Material Sciences (AREA)
• Analytical Chemistry (AREA)
• Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
• Air-Conditioning For Vehicles (AREA)
• Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
• Devices That Are Associated With Refrigeration Equipment (AREA)
• Drying Of Solid Materials (AREA)

Applications Claiming Priority (3)

Publications (2)

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ID=7701928

Family Applications (1)

Country Status (5)

Families Citing this family (11)

Family Cites Families (18)

• 2001
  • 2001-10-09 DE DE10149798A patent/DE10149798A1/de not_active Withdrawn
• 2002
  • 2002-08-23 EP EP02800552A patent/EP1436556B1/fr not_active Expired - Lifetime
  • 2002-08-23 AT AT02800552T patent/ATE360178T1/de not_active IP Right Cessation
  • 2002-08-23 WO PCT/EP2002/009422 patent/WO2003031885A1/fr active IP Right Grant
  • 2002-08-23 DE DE50209991T patent/DE50209991D1/de not_active Expired - Lifetime
  • 2002-08-23 US US10/492,190 patent/US7043936B2/en not_active Expired - Lifetime

Non-Patent Citations (1)

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