Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F28—HEAT EXCHANGE IN GENERAL
  • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
  • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
  • F28D7/10—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged one within the other, e.g. concentrically
  • F28D7/106—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged one within the other, e.g. concentrically consisting of two coaxial conduits or modules of two coaxial conduits
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F28—HEAT EXCHANGE IN GENERAL
  • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
  • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
  • F28D7/06—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits having a single U-bend

Definitions

• the present invention concerns a means for transmitting heat from a first medium to a second medium, such as from one liquid to another, or from gas to liquid, or vice versa, said means comprising a jacket frame and a collar part.
• the object of the invention is to produce a heat exchanger with which greater thermal power rating and heat transmissionr is obtained in comparison with designs known in the art.
• the heat exchanger of the invention is mainly characterized in that *
• the heat surface area of the means becomes doubled owing to the double tube system, and in the same proportion the thermal power rating increases.
• the tube exchanger approaches the properties of a plate
• Figure 1 presents schematically the heat exchanger of the invention fitted with double tubes
• Figure 2 presents a second embodiment of the heat exchanger of the invention fitted with double tubes
• FIG 3 presents a third embodiment of the heat exchanger of the invention fitted with double tubes.
• the heat exchanger fitted with double tubes comprises a jacket frame 4 closed with tube carrier plates 10 and 11 at the ends.
• the frame 4 has been fitted with straight heat surface tubes A mounted on tube carrier plates 10,11, advantageously by rolling or welding.
• An extension to the frame is a collar part 5 which is attached to the frame 4 e.g. by welding and which has been divided into two sections by a partition 6.
• the heat exchanger of the invention is further provided with a second set of tubes B which can be either straight or e.g. U-shaped, and which tube set B has been fitted through the straight heat surface tubes A of the finished frame 4 and mounted on tube carrier plate/plates 9 at the ends e.g. by rolling.
• the tube carrier plate 9 is either welded fixedly to the collar part 5 or mounted e.g. by bolts, depending on the structural design.
• the means is closed at the lower end by an end cover 7 and mounted by bolts on the frame 4.
• the upper end is closed by a cover 8, which has been been divided by a partition and affixed e.g. by bolts. It goes without saying that the means operates, in addition to vertical position, also in horizontal position.
• the jacket and straight tube heat exchanger of the invention is thus provided with two nested tube sets A and B.
• a heat releasing or receiving liquid circulation 3 or alternatively, a steam-gas circulation is supplied.
• the medium circulations 1 and 2 may, if desired, be connected in series outside or inside the exchanger, whereby said means operates with two circu ⁇ lations.
• the heat surface area of the heat exchanger of the invention becomes doubled and, in the same proportion, the heat transmission when the medium to be heated or cooled is supplied into the circulation between the tubes A and B.
• Figure 2 shows that in the second embodiment of the invention the means comprises two nested straight tube sets A and B, and four tube carrier plates 9,9B,10 and 11.
• the tube carrier plate 9 is loose, that is, not fixed with bolts.
• the means of the invention may also be so implemented that the circu- lation 3 is accomplished in straight form, one of the connectors being fitted on the end cover 7 and being without a partition 6.
• the circulation 2 may also be implemented in straight form, one of the connectors being fitted on the end cover 7 and the cover 8 being without a partition.
• the means of the invention may also be so implemented that the frame 4 does not include guide plates 17.

Landscapes

• Engineering & Computer Science (AREA)
• Physics & Mathematics (AREA)
• Thermal Sciences (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=8528304

Family Applications (1)

Country Status (2)

Cited By (4)

Citations (7)

• 1989
  • 1989-04-26 FI FI891969A patent/FI88203C/fi not_active IP Right Cessation
• 1990
  • 1990-04-26 WO PCT/FI1990/000119 patent/WO1990012992A1/en unknown

Patent Citations (7)

Non-Patent Citations (2)

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