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
  • F25B39/00—Evaporators; Condensers
  • F25B39/02—Evaporators
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
  • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
  • B21D53/00—Making other particular articles
  • B21D53/02—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers
  • B21D53/08—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers of both metal tubes and sheet metal
  • B21D53/085—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers of both metal tubes and sheet metal with fins places on zig-zag tubes or parallel tubes
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
  • B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
  • B23P15/26—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass heat exchangers or the like
• • 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
  • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
  • F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
  • F25D21/06—Removing frost
  • F25D21/08—Removing frost by electric heating
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F28—HEAT EXCHANGE IN GENERAL
  • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
  • F28F1/00—Tubular elements; Assemblies of tubular elements
  • F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
  • F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
  • F28F1/24—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely
  • F28F1/32—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely the means having portions engaging further tubular elements
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F28—HEAT EXCHANGE IN GENERAL
  • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
  • F28F2215/00—Fins
  • F28F2215/12—Fins with U-shaped slots for laterally inserting conduits

Definitions

• This invention is related to an evaporator, which provides the heat transfer in the refrigeration systems and which includes a heater for the frost accumulation on it and production method thereof.
• Heaters in the form of tubes, inside which resistance wires are placed into the grooves, which are opened on the fins, for preventing the frost that will be accumulate during the operation of the evaporators with finned tubes that are used preferably in the refrigerators. These heaters cannot be effective in the melting of all of the frost accumulated on the evaporator.
• the tube is formed in the form of a coil after making bends in the tube one after another.
• consecutive straight tubes and tube bends are formed, which comprises number of passes and rows, in the form of an array.
• the evaporator is formed by inserting one or more tube fins onto the tubes from the tube bends preferably with equal spacing and in parallel line up to each other.
• Frost accumulations are formed in between the tubes and the tube fins, during the operation. Use of heaters are needed for the efficient functioning of the evaporator and for the melting of the frost accumulation..
• An evaporator which includes very thin fins and which includes heaters in the form of "U” in the lower parts of the fins, in the United States of America Patent No. 4580623 is defined.
• the heaters that are inserted into the recesses on the fins for defrosting are defined in the French Patent No. 1422987.
• the purpose of this invention is to develop an evaporator, which can melt the frost accumulated on the evaporator and to develop an economical and practical production method for this evaporator in a short period and by using small amount of energy.
• Figure lb - The perspective view of an evaporator with finned tubes, which includes more than one heater fins,
• Figure 2 The schematic view of a tube a tube fin, a heater and a heater fin
• FIG. 3a The front view of a heater fin
• Figure 4a The side view of a heater fin, which has a circular in form and does not have an extension
• Figure 4b The side view of a heater fin, in a triangular form
• Figure 4h The three dimensional view of a curved heater fin, with the form of a blade of a propeller
• Figure 4k The side view of a curved heater fin, which has the same number of extensions as the heater recesses,
• Figure 4n The front view of a heater fin, with a triangular form, which has more number of extensions than the heater recesses,
• FIG. 5a The upper schematic view of a fixture, which has more than one heater fin recesses, onto which heater fins are not placed,
• Figure 5b The side perspective view of a fixture, which has more than one heater fin recesses, onto which heater fins are not placed,
• Figure 5c The upper schematic view of a fixture onto which heater fins and heaters are placed
• One or more evaporators (1) are used in the domestic appliances, preferably in the refrigerators, to cool the medium that it is in contact with.
• the evaporators (1) that are made with tubes with fins, which are preferably made of aluminum material, comprises one or more tubes (2), through which the cooling fluid passes and one or more tube fins (3) that makes the transfer of heat from the tube (2) in the medium to the cooling fluid.
• the melting of the frost accumulated on the tubes (2) and the tube fins (3), while the refrigerator is in operation, and which prevent the flow of air on the evaporator (1) and the transfer of heat of the tubes (2) and the tube fins (3) is provided by one or more heaters (4) that operate as much as required.
• the tube fin (3) includes one or more tube recesses (10) into which the tube (2) is fitted and one or more heater installation recesses (9) to attach the heater.
• the heater (4) includes one or more heater fins (5), attached onto the heater (4) and which provide the heat to be propagated into a wider area.
• the heater fin (5) comprises one or more extensions (6) to enter among the tube fins (3) and at least one heater recess (7), to attach it onto the heater (4).
• the heater recess (7) includes one or more catches of the heater recess (8) at its tip parts, which provide the fixation of the heater fins (5) by installing it onto the heater (4).
• the heater fin (5) has different forms and shapes, compared to the tube fin (3).
• curved form, circular form, triangular form, rectangular form Figures 4a, 4b, 4c, 4d, and 4 e.
• the heater fin (2) has extensions and surfaces in more than one planes.
• these may be of the double extension form, twisted form, curved form and blade form of a propeller ( Figures 4f, 4g, 4h and 4i).
• the number of the extensions (6) is different than the number of the heater recesses (7).
• the number of the extensions (6) may the same with the heater recesses (7) ( Figure 4k) or the number of the extensions (6) may be less than heater recesses (7) ( Figure 4m) or the number of the extensions (6) may be more than the heater recesses (7) ( Figure 4n).
• the heater fins (5) that have the same form are being used on the evaporator (1).
• heater fins (5) that have different forms are being used, due to the reasons like the tube fin (3) form, the place that it will be attached on the heater (4), the flow of air that will be formed or the flow of air that it will be placed inside of, etc.
• the extension (6) and/or the heater recess (7) may be of the same or different form ( Figure 4m).
• the fitting of the heater fin (5), which is the subject of the invention, onto the heater (4), is being accomplished by the evaporator production method.
• the heater fins (5) are fitted onto the heater (4), preferably by the help of a fixture (11).
• the fixture (11) includes one or more heater fin recesses (12), into which the heater fins (5) are placed.
• the heater fins (5) may be located with equal spacing in a symmetrical manner to each other, as well as they may be located according to the place where the heates is used.
• the heater (4) of which its bending have been made is inserted into the heater recesses (7), after the heater fins (5) are placed in a row, as desired, onto the fixture (11).
• the catches of the heater recesses (8) that have bendings preferably in different directions provide the heater (4) not to come off loose from the heater recesses (7).
• the heater (4) which is pressed onto the catches of the heater recesses (8) and the heater fin (5), may easily enter the heater recesses (7). But, when the heater (4) is to be pulled out, the catches of the heater recesses (8) prevent the heater fins (5) to leave the heater (4) by acting as a lock.
• a tube (2) coil is formed, which comprises of consecutive straight tubes and tube bends, formed by a number of passes and rows, after the consecutive bends of the tube (2), apart from the heater (4) coil pile.
• the tube (2) is placed in the recesses, on tube fins (3), which are parallel to each other and preferably with equal spacing, by the help of the coil tube bends.
• the heater fin (5) is located between the tube fins (3) and inside the airflow, which is formed between the tube fins (3), a turbulent flow is formed, especially when the heater (4) is in operation the thermal performance of the evaporator (1) is thus improved.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Physics & Mathematics (AREA)
• Thermal Sciences (AREA)
• General Engineering & Computer Science (AREA)
• Geometry (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• Defrosting Systems (AREA)

Applications Claiming Priority (3)

Publications (1)

Family

ID=28450353

Family Applications (1)

Country Status (4)

Families Citing this family (2)

Family Cites Families (4)

• 2003
  • 2003-03-21 TR TR2004/02418T patent/TR200402418T1/xx unknown
  • 2003-03-21 AU AU2003223156A patent/AU2003223156A1/en not_active Abandoned
  • 2003-03-21 EP EP03719283A patent/EP1490638A1/de not_active Withdrawn
  • 2003-03-21 WO PCT/TR2003/000021 patent/WO2003081151A1/en not_active Application Discontinuation

Non-Patent Citations (2)

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