Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F28—HEAT EXCHANGE IN GENERAL
  • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
  • F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
  • F28F3/02—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
  • F28F3/04—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element
  • F28F3/042—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element in the form of local deformations of the element
• • 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
  • F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
  • F28D9/0012—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the apparatus having an annular form
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10S165/00—Heat exchange
  • Y10S165/916—Oil cooler

Definitions

• the invention relates to a plate heat exchanger which consists of a stack of plates of the same size and with a uniform profile, in which neighboring plates alternately turn their front sides or rear sides, and in which the plates are welded or welded at the points where they touch and support one another are soldered. Areas of application of this heat exchanger are above all the cooling and freezing technology with evaporating and condensing media, machine cooling and heat transfer processes in which a medium freely enters the heat exchanger from a container.
• heat-emitting and heat-absorbing media flow through channels with an approximately constant cross section. This cross section can fluctuate around an average, e.g. due to the installation of obstacles which increase the turbulence of the flow and thus improve the heat transfer, it neither increases nor decreases continuously during the heat exchange. This applies to the known tubular heat exchangers as well as to known spiral and plate heat exchangers.
• the principle applies to accommodate the largest possible heat exchanger areas in the smallest possible construction volume and to achieve high heat transfer rates with the lowest possible pressure losses.
• the profiling usually consists of a wave-shaped embossing with wave crests and wave troughs of equal cross-section transverse to the direction of propagation of the waves.
• the straight wave-shaped profiles form an acute angle with the longitudinal axes of the plates, so that in the case of plates which are rotated by 180 ° with respect to one another, the waves intersect and keep the plates at a distance.
• the medium flowing in it is subject to a constant change of direction with a periodically changing flow cross-section. This results in larger heat exchanger surfaces and turbulence, which de improve the heat transfer.
• the oil filter is connected axially by a screw connection to the heat exchanger and the same to the engine, as in DE-OS 3440064, the
• the object of the invention is to create a compact plate heater with a low power-to-weight ratio, which offers a growing flow cross-section to a medium that expands under the influence of heat and a cooling medium with a decreasing volume a decreasing flow cross-section, and thereby the flow stabilizes and promotes heat transfer.
• this plate heat exchanger is intended to improve the conditions for connecting a filter.
• a heat exchanger which consists of a stack of equally large and uniformly profiled annular plates which are turned 180 ° against one another and therefore alternately face their front sides and their rear sides, has a circumference heat-emitting medium is supplied, which radially flows through every second gap between the plates until it flows out through the channel enclosed by annular plates, while a heat-absorbing medium which is supplied and discharged via flanged ring lines radially on the other side of each plate Flows around countercurrent.
• the plates are profiled in such a way that adjacent plates either touch and support themselves with their inner and outer flat edges or with their profiles and enclose a gap between them.
• Wavy profiles are preferably embossed which run in a spiral, in particular in the form of an Archimedean spiral.
• the cross section of the waves is arbitrary. It can be sinusoidal or trapezoidal. Each spiral begins and ends in a plateau stamped up to the height of the wave crests, in the middle of which a breakthrough is formed through the plate.
• the plateaus and the openings formed in them preferably have an oval cross section on the inner edge, the longitudinal axis of which extends radially, and on hen and soldered in the stack with heat.
• the plate heat exchanger is enclosed by a housing in which a filter, for example an oil filter, can advantageously be arranged, which encloses the entire circumference of the heat exchanger and therefore has a filter surface that is many times larger than known axially connected filters.
• This filter is characterized by lower pressure losses and a longer service life. With this arrangement of the filter, the vibrations transmitted by the engine are dampened and hardly affect the stability of the heat exchanger.
• FIG. 1 shows the view of a plate and FIG. 2 shows the radial section through a plate heat exchanger without a housing,
• the plate heat exchanger consists of a stack of equally sized and similarly profiled annular plates 1, in the adjacent plates 1 are turned against each other by 180 ° and either their front sides 2 or their back sides 3 face.
• each plate 1 enclose the heat exchanger surface 6, which in the form of a
• Shaft 7 is profiled, the wave crests of which run like an Archimedean spiral and each begin and end in a plateau 8 which is stamped up to the height of the wave crest, in the middle of which a breakthrough 9 is formed through the plate 1.
• the outer diameter of the plate 1 is many times larger than its inner diameter in order to obtain a large heat exchanger surface 6.
• adjacent plates 1 either the contacting flat edges 4 and 5 or the contacting plateaus 8 and the intersecting shafts 7 are welded at their points of contact by means of a laser.
• the axial channels 10 and 11 formed by the openings 9 are connected to the ring lines 12 and 13 on the end faces of the plate heat exchanger.
• the plate heat exchanger is enclosed by a housing 14, in the circumference of which a filter 15 is arranged.
• the filter 15 is supplied with hot oil from the engine via line 16, which flows through the filter 15 into the plate heat exchanger and is returned to the engine via line 17 after cooling.
• the oil is cooled by water, which is supplied and discharged via the ring lines 12 and 13.

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)
• Lubrication Of Internal Combustion Engines (AREA)

Applications Claiming Priority (3)

Publications (2)

Family

ID=7757657

Family Applications (1)

Country Status (7)

Cited By (1)

Families Citing this family (26)

Family Cites Families (25)

• 1995
  • 1995-03-17 DE DE19510847A patent/DE19510847C2/de not_active Expired - Lifetime
• 1996
  • 1996-03-15 WO PCT/DE1996/000487 patent/WO1996029558A1/fr not_active Ceased
  • 1996-03-15 AT AT96907253T patent/ATE187244T1/de not_active IP Right Cessation
  • 1996-03-15 CA CA002215192A patent/CA2215192C/fr not_active Expired - Fee Related
  • 1996-03-15 US US08/930,388 patent/US6085832A/en not_active Expired - Fee Related
  • 1996-03-15 EP EP96907253A patent/EP0839308B1/fr not_active Expired - Lifetime
  • 1996-03-15 JP JP52798196A patent/JP3836879B2/ja not_active Expired - Fee Related

Non-Patent Citations (1)

Also Published As

Similar Documents

Legal Events