EP0271680A1 - Echangeur de chaleur - Google Patents

Echangeur de chaleur Download PDF

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Publication number
EP0271680A1
EP0271680A1 EP87115752A EP87115752A EP0271680A1 EP 0271680 A1 EP0271680 A1 EP 0271680A1 EP 87115752 A EP87115752 A EP 87115752A EP 87115752 A EP87115752 A EP 87115752A EP 0271680 A1 EP0271680 A1 EP 0271680A1
Authority
EP
European Patent Office
Prior art keywords
hollow body
heat exchanger
exchanger according
hollow
flow
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP87115752A
Other languages
German (de)
English (en)
Inventor
Bernhard Kessel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP0271680A1 publication Critical patent/EP0271680A1/fr
Withdrawn legal-status Critical Current

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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
    • 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

Definitions

  • the invention relates to a heat exchanger specified in the preamble of claim 1.
  • the second hollow body is firmly attached to the first hollow body by means of elaborate sliding and pivoting hinge elements in such a way that it first pulls a short distance out of the second hollow body to clean the primary circular duct and then swinging to the side like a door. Since the hinges have to take up the entire load of the first hollow body and have to transfer it to the second hollow body, they require a stable design, as does the boundary wall of the second hollow body, on which the hinges are attached. The weight of the first hollow body folded out for cleaning purposes will be considerable if it is heavily soiled and has not yet been emptied on the secondary side.
  • Such heat exchangers which are predestined for the wastewater from industrial kitchens, cleaning companies, laundries, dyeing plants, meat processing industrial companies, beverage industrial companies and the like, in order to remove the heat from the warm wastewater before they reach the further sewer system and the recovered heat for further consumption supply, must be cleaned frequently because of the most diverse admixtures of substances such as fat, fluff, meat residues, food residues.
  • the invention has for its object to provide a heat exchanger of the type mentioned, which is characterized by a simple and robust and designed with a view to easy cleaning.
  • first hollow body Since a complete separation of the two hollow bodies without mutual stress is associated with this design, are eliminated elaborate structural measures to have to take up the load on the first hollow body on the second hollow body when cleaning and separating the two hollow bodies. Since the first hollow body is designed to be mobile on the floor, it can be quickly pulled out of the second hollow body in a completely straight line and moved away. The soiled areas of both hollow bodies are immediately accessible and can easily be sprayed clean with the steam jet. Neither when opening nor when the heat exchanger is closed do any loads have to be transferred from one hollow body to the other. This means that there are no canting or cross-sectional changes in the primary circuit. Both hollow bodies can be formed accordingly gracefully. It is also advantageous that a damaged hollow body can be exchanged without any modification work and combined with an intact other hollow body.
  • the bottom wheels of the first hollow body take over its entire load, so that the opening and closing process of the heat exchanger can be carried out quickly and with little effort.
  • the guides on the second hollow body ensure that both hollow bodies can be quickly and easily detached from one another and can also be plugged together in a straight line again without jamming occurring or damage being caused by unintentional oblique insertion. Even on an uneven floor, the guides ensure that the first hollow body assumes its predetermined position in the second hollow body and that it can finally be moved easily.
  • a structurally simple embodiment is further evident from claim 3.
  • the heat exchanger When connected, the heat exchanger is closed on all sides. Nevertheless, every hollow body requires minimal construction.
  • the substructure extends freely from the front boundary wall under the hollow body. Thereby the entire hollow body can be pushed into the second hollow body and the front boundary wall closes the unit as a front cover. So that the outlet from the second hollow body can freely emerge on the floor, the substructure, which can be a cantilevered plate with wheels articulated underneath, is left out in the middle.
  • the front boundary wall serves practically as a support for the zigzag-shaped front side and represents with its edge a sealing edge which can be placed against a corresponding counter sealing edge of the second hollow body.
  • the feature of claim 4 is also advantageous because the flexible lines allow the hollow bodies to be completely removed from one another for unobstructed cleaning. If quick-release fasteners are provided for the lines, they can be operated quickly before a cleaning process, which can be useful for effective flushing through both the primary and the secondary circuit.
  • the embodiment of claim 5 is also advantageous because such a seal, especially if it consists of foam rubber, provides a perfect seal even after a long service life. Due to its elasticity and thickness, a foam rubber seal is also able to compensate for warping or unevenness in the area of the sealing edges due to construction or thermal factors.
  • a further, particularly advantageous embodiment with independent inventive significance in which the front sides of the containers consist of zigzag bent or welded sheet metal and in cross-section define wedge-shaped and coherent flow chambers, which are closed at the side and rear, and in which each flow chamber is divided by a horizontal partition into an upper and a lower part, between which there is a flow connection around the set-back front edge of the partition forth.
  • the known heat exchangers mentioned at the outset have the disadvantage that the oblique boundary walls of the flow chambers warp, bulge or dent due to the temperature differences and also because of the different pressures between the two circles. This creates irregularities, especially in the primary circuit channel, which can impair the efficiency of the heat exchanger and lead to increased deposition of dirt.
  • the spacer elements ensure that the boundary walls of the flow chambers maintain their predetermined flatness and are not subject to any deformations even under the influence of temperature and pressure differences.
  • the feature of claim 8 is also very advantageous because flow paths for the heat transfer medium remain free in front of and behind the spacer elements, while at the same time the spacer elements take over the function of flow guide elements over their length, which force a directed flow that promotes heat transfer. Particularly stable flow chambers with defined flow paths are achieved if several spacer elements are used next to each other at intervals. The heat exchange effect is favored by this forced flow.
  • the spacer elements also serve as supports for the partitions, which are supported very stably in this way.
  • the feature of claim 11 is also important, since plastic molded parts can be produced inexpensively and with dimensional accuracy, remain temperature-resistant and are characterized by a low weight. The material is also resistant to wastewater contaminated in this way.
  • a heat exchanger 1 as can be used for heat recovery from waste water, consists of a first hollow body 3 and a second hollow body 2, which can be completely separated from one another form re and linearly slidable units.
  • the second hollow body 2 is box-shaped with lateral boundary walls 4, a ceiling and a floor boundary wall 5, 6 and with a rear wall, not shown.
  • 2 feet 7 are attached to the second hollow body and carry height-adjustable floor supports 8.
  • a truss bracing 9 stiffens the feet 7.
  • guides 35 are provided, which are designed as longitudinal floor rails with a U-shaped cross section and are held in their position by spacer elements 34.
  • Each bottom rail 35 has a horn-like insertion funnel 36 and a lower guideway 37. The bottom rails 35 can be adjusted slightly rising from the insertion funnel 36 to the rear.
  • the second hollow body 2 has in its interior 11 zigzag-shaped bent or welded sheets, which form wedge-shaped heat exchange flow chambers 12. These flow chambers 12 are closed laterally and rearwards by the lateral boundary walls 4 and the rear wall, not designated, so that there is a flow path running from bottom to top between them.
  • FIG. 2 which is a section through the first hollow body 1.
  • the boundary walls 4, 5 and 6 of the second hollow body 2 define a peripheral edge 15 to which a sealing frame 16, preferably covered with foam rubber, is fastened.
  • an inlet 17 is provided for the primary circuit.
  • the associated outlet 24 is located in the bottom wall 6 of the second hollow body 2.
  • the primary circular channel is further delimited in the second hollow body 2 by inner walls 18.
  • the flow chambers 12 of the second hollow body 2 are from below with inlets 19, which can also be provided on the rear side wall, with a heat transfer medium charged, which can flow out again via outlets 20 above.
  • the first hollow body 3 consists essentially of an upright, door-like front boundary wall 21 and a substructure or base plate 22, which stretches away from the lower edge thereof and carries wheels 23 on the bottom.
  • the bottom plate 22 is recessed like a fork because the bottom boundary wall 6 of the second hollow body 2 has the outlet for the waste water.
  • zigzag-shaped or welded sheets 25 with outer sides 26 are attached in such a way that they form wedge-shaped flow chambers 28 with front, transverse edges 27, which are vertical to the flow chambers 12 of the second hollow body 2 Direction are offset such that the flow chambers 28 can be inserted between the flow chambers 12 and thereby leave a zigzag-shaped primary circuit channel of the same distance from the inlet 17 to the outlet 24.
  • the sheets 25 are held in a stabilizing manner via webs 49 on the front boundary wall 21.
  • the track width of the wheels 23 is matched to the distance between the floor rails 35 in such a way that the first hollow body 3 can be inserted in a straight line into the second hollow body 2 until the edge of the front boundary wall 21, designated 32, rests on the sealing frame 16 and the interior 13 of the heat exchanger 1 is sealed from the outside.
  • handles 29 are attached to the front boundary wall. Furthermore, inlets 30 and outlets 31 for the secondary circuit, which are located below, are attached to the front boundary wall 21 via the flow chambers 28.
  • the inlets 19 and 30 and the outlets 20 and 31 are connected to a circulation pump and a heat exchange coil, which are not shown in FIG ten buffer storage and is used to transfer the heat taken from the wastewater to another medium.
  • the flexible lines, not shown, can be connected to the inlets 19, 30 and outlets 20, 31 by means of quick-release fasteners.
  • quick-release fasteners 33 are attached, which can be brought into engagement in receptacles 38 of the front boundary wall 21 of the first hollow body 3 in order to apply the contact pressure necessary for sealing onto the sealing frame 16.
  • FIG. 2 shows in detail how the flow chambers 28 of the first hollow body 3 are connected to one another.
  • Each flow chamber 28, which is wedge-shaped in cross section and which is delimited by the bent or welded metal sheets 25, is expediently provided with a plurality of spacing elements 50 arranged at equal intervals, which according to FIG. 3 as Z-shaped profiles with upper and lower legs 40 and 52 and a middle high web 51 are formed.
  • Each upper crosspiece 40 is attached to the upper inner wall of the flow chamber 28, while the lower leg 52 is attached to the lower inner wall of the flow chamber 28.
  • the spacer elements 50 are expediently sheet metal edge profiles which are welded or glued and in this way increase the resistance to buckling or buckling of the outer sides 26 of the flow chambers 28.
  • the spacers 50 are inserted so that their rear ends are spaced from the front boundary wall 21, while their front ends are spaced from the front edge 27 of each flow chamber 28.
  • the spacer elements 50 thus form longitudinal flow channels in each flow chamber 28.
  • the partition consists of several partition sections 53 in each flow chamber 28.
  • Each partition section 53 is part of an egg nes one-piece, in cross-section H-shaped insert 39, preferably a plastic molded part that is only inserted.
  • Each insert part 39 has high ridges with parts 54 lying above the partition section 53 and parts 55 lying below. The insert parts 39 are pushed in so far that the front ends 42 of the insert parts 39 maintain a distance from the front edge 27 of the flow chamber 28, while the one designated 44 rear edge of the partition wall portion 53 is present on the front boundary wall 21.
  • the outside of the two hollow bodies 2 and 3 can be provided in the usual way with thermal insulation, for example thermal insulation 58 on the front boundary wall 21 of the first hollow body 3, in order to be able to avoid undesired heat losses.
  • venting and pressure relief valves are arranged either on one or on both hollow bodies 2, 3, the venting valves serving to vent the primary and also the secondary circuit when filling for the first time, while the pressure relief valves damage due to excessive pressure inside the hollow body or should prevent in the two circles.
  • the upper pressure limit in the secondary circuit is set to 0.6 bar.
  • angles 56 are provided on the inner boundary wall 21, on which the partition wall sections 53 rest.
  • a connecting part 48 leads from the uppermost flow chamber 28 to the front boundary wall 21.
  • FIG. 2 shows how the primary circuit runs along the free outer sides of the sheets 25 (arrows 47).
  • the secondary circuit within the flow chambers 28 is indicated by arrows 45 and 46.
  • the insert parts 39 can be equipped with flow guiding elements 57 which control the flow in the secondary circuit.
  • the waste water runs from the inlet 17 into the primary circuit channel and along this in a zigzag shape to the outlet 24 all free surfaces of the flow chambers 28 and 12 of both hollow bodies 2 and 3.
  • a heat transfer medium is pumped in countercurrent, which extracts the heat from the waste water and flows out via the outlets 31 and 20.
  • the supply of waste water is interrupted as a function of the pollution of the cooled down waste water, for example ascertained by a weakening effect of the heat exchanger 1.
  • the tension locks 33 are opened and the first hollow body 3 is pulled out of the second hollow body 2 by means of the handles 29 and completely separated therefrom.
  • the dirt can then be removed.
  • the inlets 30 and 19 and the outlets 31 and 20 are optionally connected to the secondary circuit via flexible lines, ie the flow chambers 28, 41 and 12 are filled.
  • the present high weight is absorbed by the feet 7 and the wheels 23.
  • the first hollow body 3 is moved back into the second hollow body 2 until the edge 32 abuts the sealing tape 16 and the tension locks 33 can be closed.
  • the heat exchanger is then ready for operation again.
  • the bottom rails 35 guide the wheels 23 exactly so that the first hollow body 3 can be inserted effortlessly.

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)
EP87115752A 1986-11-18 1987-10-27 Echangeur de chaleur Withdrawn EP0271680A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19863639328 DE3639328A1 (de) 1986-11-18 1986-11-18 Waermetauscher
DE3639328 1986-11-18

Publications (1)

Publication Number Publication Date
EP0271680A1 true EP0271680A1 (fr) 1988-06-22

Family

ID=6314179

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87115752A Withdrawn EP0271680A1 (fr) 1986-11-18 1987-10-27 Echangeur de chaleur

Country Status (2)

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EP (1) EP0271680A1 (fr)
DE (1) DE3639328A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1697959B (zh) * 2003-03-04 2010-05-26 郑良全 带有清洗设备的废热换热器

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3912628A1 (de) * 1989-04-18 1990-10-25 Helmut Zink Waermetauscher
DE102012222638A1 (de) * 2012-12-10 2014-06-12 Behr Gmbh & Co. Kg Wärmeübertrager
CN105509370B (zh) * 2016-01-14 2017-11-03 北京瑞宝利热能科技有限公司 一种组合式铝合金换热器及其系统

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE348289C (de) * 1920-01-20 1922-02-04 Heinrich Wienges Dipl Ing Gegenstromkuehler
DE681276C (de) * 1936-10-25 1939-09-20 Hermann Schimmelpfeng Waermeaustauscher
DE803540C (de) * 1949-01-15 1951-04-05 Koelsch Foelzer Werke Akt Ges Kaeltemaschine
DE933632C (de) * 1952-05-16 1955-09-29 Kesselschmiede Amort G M B H Waermeaustauscher
US3230733A (en) * 1962-04-10 1966-01-25 Emhart Corp Refrigeration system and elements thereof
FR86518E (fr) * 1964-01-17 1966-02-25 échangeurs de chaleur à chicanes emboîtables et démontables
DE3226984A1 (de) * 1981-12-28 1983-07-07 Arno-Wolfgang Ing.(grad.) 7300 Esslingen Weigelt Waermetauscher

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE348289C (de) * 1920-01-20 1922-02-04 Heinrich Wienges Dipl Ing Gegenstromkuehler
DE681276C (de) * 1936-10-25 1939-09-20 Hermann Schimmelpfeng Waermeaustauscher
DE803540C (de) * 1949-01-15 1951-04-05 Koelsch Foelzer Werke Akt Ges Kaeltemaschine
DE933632C (de) * 1952-05-16 1955-09-29 Kesselschmiede Amort G M B H Waermeaustauscher
US3230733A (en) * 1962-04-10 1966-01-25 Emhart Corp Refrigeration system and elements thereof
FR86518E (fr) * 1964-01-17 1966-02-25 échangeurs de chaleur à chicanes emboîtables et démontables
DE3226984A1 (de) * 1981-12-28 1983-07-07 Arno-Wolfgang Ing.(grad.) 7300 Esslingen Weigelt Waermetauscher

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1697959B (zh) * 2003-03-04 2010-05-26 郑良全 带有清洗设备的废热换热器

Also Published As

Publication number Publication date
DE3639328A1 (de) 1988-05-26
DE3639328C2 (fr) 1991-02-28

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