CH394553A - Heat exchangers for heating air, in particular for the passenger compartment of motor vehicles - Google Patents
Heat exchangers for heating air, in particular for the passenger compartment of motor vehiclesInfo
- Publication number
- CH394553A CH394553A CH895460A CH895460A CH394553A CH 394553 A CH394553 A CH 394553A CH 895460 A CH895460 A CH 895460A CH 895460 A CH895460 A CH 895460A CH 394553 A CH394553 A CH 394553A
- Authority
- CH
- Switzerland
- Prior art keywords
- water
- heat
- flow
- heat exchanger
- bulkhead
- Prior art date
Links
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
- F28D7/16—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 in parallel spaced relation
- F28D7/163—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 in parallel spaced relation with conduit assemblies having a particular shape, e.g. square or annular; with assemblies of conduits having different geometrical features; with multiple groups of conduits connected in series or parallel and arranged inside common casing
- F28D7/1638—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 in parallel spaced relation with conduit assemblies having a particular shape, e.g. square or annular; with assemblies of conduits having different geometrical features; with multiple groups of conduits connected in series or parallel and arranged inside common casing with particular pattern of flow or the heat exchange medium flowing inside the conduits assemblies, e.g. change of flow direction from one conduit assembly to another one
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00321—Heat exchangers for air-conditioning devices
- B60H1/00328—Heat exchangers for air-conditioning devices of the liquid-air type
-
- 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
- F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
- F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
- F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
- F28D1/053—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight
- F28D1/05316—Assemblies of conduits connected to common headers, e.g. core type radiators
- F28D1/05325—Assemblies of conduits connected to common headers, e.g. core type radiators with particular pattern of flow, e.g. change of flow direction
-
- 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
- F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
- F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
- F28D2021/008—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for vehicles
- F28D2021/0091—Radiators
- F28D2021/0096—Radiators for space heating
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Geometry (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Description
Wärmeaustauscher zur Luftaufheizung, insbesondere für den Fahrgastraum von Kraftfahrzeugen Die Erfindung betrifft einen Wärmeaustauscher zur Luftaufheizung, insbesondere für den Fahrgast raum von Kraftfahrzeugen, mit von der Luft beauf- schlagten, wasserdurchströmten Rohr- oder Spalt bündeln, die an ihren beiden Kopfenden in je einen Wasserkasten münden.
Wärmeaustauscher, die vom wärmeabgebenden Medium, beispielsweise Wasser, von der einen zur anderen Seite durchströmt werden, haben eine vom Zulauf nach dem Ablauf fallende Oberflächentem peratur. Dementsprechend ist auch die Lufterwär mung an der Oberfläche des Wärmeaustauschers ungleichmässig.
Zur Vergleichmässigung der Lufter wärmung wird erfindungsgemäss vorgeschlagen, dass ein Wasserkasten mindestens mit einem Zufluss- stutzen und einem Abflussstutzen für das wärme abgebende Wasser und mit mindestens einer das zuströmende und abströmende Wasser trennenden Schottwand versehen ist, die so im Wasserkasten angeordnet ist, dass ein in Strömungsrichtung des Wassers grösser werdender Strömungsquerschnitt er reicht wird, wodurch das wärmeabgebende Wasser im Zustand höherer Temperatur gezwungen wird, schneller zu fliessen als im Zustand tieferer Tempe ratur,
so dass in jedem Rohr- oder Spaltbündel des Wärmetauschers eine ungefähr gleiche nach aussen abgegebene Wärmemenge erzielt wird.
Durch die erfindungsgemässe Ausgestaltung des Wasserkastens des Wärmeaustauschers ist eine weit gehend gleichmässige Luftaufheizung über den gesam ten Wärmeaustauscher erreicht. Dadurch, dass das wärmeabgebende Mittel gezwungen wird, im Zustand höherer Temperatur schneller zu fliessen als im Zu- stand tieferer Temperatur, ist in jedem Bereich des Wärmeaustauschers eine ungefähr gleiche, nach aus sen abgegebene Wärmemenge garantiert.
In der Zeichnung ist ein Ausführungsbeispiel des Erfindungsgegenstandes schematisch dargestellt. Die Abbildung zeigt einen Rohrbündelwärmeaus- tauscher mit zwei Rohrbündeln 1 und 2, die von der aufzuheizenden Luft beaufschlagt werden. Die beiden Rohrbündel 1, 2 münden an ihren Kopfenden in je einen Wasserkasten 3, 4. Anstelle der Rohrbündel können auch Lamellenpakete eingebaut werden, die ebenfalls zwischen den beiden Wasserkästen 3 und 4 Durchflusskanäle für das Wasser bilden. Der Wasser kasten 3 ist durch die Schottwand 5 in zwei Teil räume 6, 7 unterteilt.
Am Teilraum 6 sind der Ein trittsstutzen 8 und am Teilraum 7 der Austrittsstutzen 9 angeschlossen.
Das z. B. vom Fahrzeugmotor aufgeheizte Wasser tritt gemäss Pfeil 10 über den Eintrittsstutzen 8 in den Teilraum 6 des Wasserkastens 3 ein und fliesst dann durch das untere Rohrbündel 1 gemäss den Pfeilen 11 in den gegenüberliegenden Wasserkasten 4, in dem es nach Pfeil 12 in seiner Strömungsrichtung um 180 Grad umgelenkt wird. Es durchströmt dann das Rohrbündel 2 entsprechend den Pfeilen 13, um anschliessend in den zweiten Teilraum 7 des Wasser kastens 3 zu gelangen, den es über den Austrittsstutzen 9 gemäss Pfeil 14 verlässt.
Da der Teilraum 6 der Wasserkastens 3 senkrecht zur Längsrichtung der Rohrbündel eine geringere Länge als der Teilraum 7 aufweist, muss das Rohr bündel 1 entsprechend kleiner sein, d. h. der Strö mungsquerschnitt des Rohrbündels 1 ist geringer als der des Rohrbündels 2. Die Durchströmgeschwindig- keit des Wassers durch die Rohre des Rohrbündels 1 ist demnach aufgrund der Tatsache, dass durch alle Strömungsquerschnitte die gleiche Wassermenge flies- sen muss, grösser als die Durchströmgeschwindigkeit des Wassers im Rohrbündel 2.
Die an sich höhere Wärmeabgabe im Bereich des Rohrbündels 1 auf grund der höheren Temperatur des Wärmeübertra- gungsmittels im Rohrbündel 1 wird durch die höhere Geschwindigkeit, d. h. durch die kürzere Verweilungs- zeit des Mediums im Rohrbündel 1 herabgesetzt, gleichzeitig wird die an sich geringere Wärmeabgabe im Rohrbündel 2 aufgrund der relativ tieferen Tem peratur durch die grössere Verweilungszeit des Me diums im Rohrbündel 2 erhöht, so dass insgesamt eine nahezu gleiche Wärmeabgabe in den Bereichen der Rohrbündel 1 und 2 erzielt wird.
Es wäre natürlich auch möglich, anstelle von nur zwei Rohrbündeln mehrere Rohrbündel vorzusehen, wobei dann entsprechend mehrere Schottwände und mehrere Zu- bzw. Abflussstutzen vorgesehen sein könnten. So könnte z. B. das in der Abbildung mit 1 bezeichnete Rohrbündel in zwei Teile aufgeteilt werden, die beidseits des Rohrbündels 2 angeordnet sind. In diesem Fall wären dann zwei Schottwände 5 und zwei Zuflussstutzen 8 aber nur ein Abflussstutzen 9 notwendig.
Heat exchanger for air heating, in particular for the passenger compartment of motor vehicles The invention relates to a heat exchanger for air heating, in particular for the passenger compartment of motor vehicles, with a pipe or gap through which the air flows and through which water flows, each of which is placed in a water tank at both ends flow out.
Heat exchangers through which the heat-emitting medium, for example water, flows from one side to the other, have a surface temperature that falls from the inlet to the outlet. Accordingly, the air heating on the surface of the heat exchanger is also uneven.
To even out the air warming, it is proposed according to the invention that a water tank is provided with at least one inlet connection and one outlet connection for the heat-emitting water and with at least one bulkhead separating the inflowing and outflowing water, which is arranged in the water tank so that an in Direction of flow of the water, the flow cross-section becomes larger, whereby the heat-emitting water is forced to flow faster in a state of higher temperature than in a state of lower temperature,
so that an approximately equal amount of heat released to the outside is achieved in each tube or gap bundle of the heat exchanger.
The inventive design of the water tank of the heat exchanger a largely uniform air heating over the total th heat exchanger is achieved. Because the heat-emitting agent is forced to flow faster in the state of higher temperature than in the state of lower temperature, approximately the same amount of heat emitted to the outside is guaranteed in every area of the heat exchanger.
An exemplary embodiment of the subject matter of the invention is shown schematically in the drawing. The figure shows a tube bundle heat exchanger with two tube bundles 1 and 2 to which the air to be heated is applied. The two tube bundles 1, 2 open at their head ends into a water tank 3, 4. Instead of the tube bundles, lamella packs can also be installed, which also form flow channels for the water between the two water tanks 3 and 4. The water tank 3 is divided by the bulkhead 5 into two sub-spaces 6, 7.
At the subspace 6, the inlet port 8 and the subspace 7 of the outlet port 9 are connected.
The Z. B. from the vehicle engine heated water enters according to arrow 10 via the inlet port 8 in the subspace 6 of the water tank 3 and then flows through the lower tube bundle 1 according to the arrows 11 in the opposite water tank 4, in which it is according to arrow 12 in its flow direction Is deflected 180 degrees. It then flows through the tube bundle 2 according to the arrows 13 in order to then get into the second compartment 7 of the water box 3, which it leaves via the outlet connection 9 according to the arrow 14.
Since the subspace 6 of the water tank 3 perpendicular to the longitudinal direction of the tube bundle has a shorter length than the subspace 7, the tube bundle 1 must be correspondingly smaller, ie. H. The flow cross-section of tube bundle 1 is smaller than that of tube bundle 2. The flow speed of the water through the tubes of tube bundle 1 is therefore greater than the flow speed of the water due to the fact that the same amount of water must flow through all flow cross-sections in the tube bundle 2.
The actually higher heat dissipation in the region of the tube bundle 1 due to the higher temperature of the heat transfer medium in the tube bundle 1 is caused by the higher speed, i.e. H. reduced by the shorter dwell time of the medium in the tube bundle 1, at the same time the lower heat output in the tube bundle 2 due to the relatively lower temperature is increased by the longer dwell time of the medium in the tube bundle 2, so that overall almost the same heat output in the Areas of the tube bundle 1 and 2 is achieved.
It would of course also be possible to provide several tube bundles instead of only two tube bundles, in which case several bulkheads and several inflow and outflow nozzles could be provided accordingly. So could z. B. in the figure with 1 designated tube bundle can be divided into two parts, which are arranged on both sides of the tube bundle 2. In this case, two bulkheads 5 and two inflow nozzles 8, but only one outflow nozzle 9, would then be necessary.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH895460A CH394553A (en) | 1960-08-08 | 1960-08-08 | Heat exchangers for heating air, in particular for the passenger compartment of motor vehicles |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH895460A CH394553A (en) | 1960-08-08 | 1960-08-08 | Heat exchangers for heating air, in particular for the passenger compartment of motor vehicles |
Publications (1)
Publication Number | Publication Date |
---|---|
CH394553A true CH394553A (en) | 1965-06-30 |
Family
ID=4346689
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH895460A CH394553A (en) | 1960-08-08 | 1960-08-08 | Heat exchangers for heating air, in particular for the passenger compartment of motor vehicles |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH394553A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2155982A1 (en) * | 1971-10-04 | 1973-05-25 | Marston Radiators Ltd | |
FR2605727A1 (en) * | 1986-10-23 | 1988-04-29 | Chausson Usines Sa | TYPE HEAT EXCHANGER IN WHICH THE SUPPLY AND OUTLET TUBES ARE PROVIDED IN THE SAME WATER BOX |
CN109582102A (en) * | 2017-09-29 | 2019-04-05 | 双鸿科技股份有限公司 | The electronic device and its water-cooling mould group for having water-cooling function are arranged with water cooling |
CN111121516A (en) * | 2018-10-31 | 2020-05-08 | 马勒国际有限公司 | Heat exchanger for air conditioning system |
-
1960
- 1960-08-08 CH CH895460A patent/CH394553A/en unknown
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2155982A1 (en) * | 1971-10-04 | 1973-05-25 | Marston Radiators Ltd | |
FR2605727A1 (en) * | 1986-10-23 | 1988-04-29 | Chausson Usines Sa | TYPE HEAT EXCHANGER IN WHICH THE SUPPLY AND OUTLET TUBES ARE PROVIDED IN THE SAME WATER BOX |
EP0267084A1 (en) * | 1986-10-23 | 1988-05-11 | Valeo Chausson Thermique | Heat exchanger of the type in which inlet and outlet pipe are provided on the same header box |
CN109582102A (en) * | 2017-09-29 | 2019-04-05 | 双鸿科技股份有限公司 | The electronic device and its water-cooling mould group for having water-cooling function are arranged with water cooling |
CN111121516A (en) * | 2018-10-31 | 2020-05-08 | 马勒国际有限公司 | Heat exchanger for air conditioning system |
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