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DE2838397A1 - Heater system for bus - includes separate head and feet ventilators and with limit on head duct - Google Patents

Heater system for bus - includes separate head and feet ventilators and with limit on head duct

Info

Publication number
DE2838397A1
DE2838397A1 DE19782838397 DE2838397A DE2838397A1 DE 2838397 A1 DE2838397 A1 DE 2838397A1 DE 19782838397 DE19782838397 DE 19782838397 DE 2838397 A DE2838397 A DE 2838397A DE 2838397 A1 DE2838397 A1 DE 2838397A1
Authority
DE
Germany
Prior art keywords
head
bus
heating
ventilators
feet
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Withdrawn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
DE19782838397
Other languages
German (de)
Inventor
Hans-Martin Dipl Ing Haase
Willi Dipl Ing Kraemer
Hans-Peter Dipl Ing Schanzer
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.)
Daimler Benz AG
Original Assignee
Daimler Benz AG
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 Daimler Benz AG filed Critical Daimler Benz AG
Priority to DE19782838397 priority Critical patent/DE2838397A1/en
Publication of DE2838397A1 publication Critical patent/DE2838397A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60HARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00Heating, cooling or ventilating [HVAC] devices
    • B60H1/00357Air-conditioning arrangements specially adapted for particular vehicles
    • B60H1/00371Air-conditioning arrangements specially adapted for particular vehicles for vehicles carrying large numbers of passengers, e.g. buses
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60HARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00Heating, cooling or ventilating [HVAC] devices
    • B60H1/00642Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
    • B60H1/00814Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation
    • B60H1/00878Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation the components being temperature regulating devices
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60HARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00Heating, cooling or ventilating [HVAC] devices
    • B60H1/00007Combined heating, ventilating, or cooling devices
    • B60H1/00207Combined heating, ventilating, or cooling devices characterised by the position of the HVAC devices with respect to the passenger compartment
    • B60H2001/00221Devices in the floor or side wall area of the passenger compartment

Landscapes

  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Air-Conditioning For Vehicles (AREA)

Abstract

The fresh air heater and ventilation system for the bus has separate ducts for the overhead system and the foot warming section. The overall output from the two systems is such that the head level temp. does not exceed a set value for comfort purposes. The system brings the head level temp. rapidly to the set value and then stabilises it. Most of the heating is from the foot level ducts with fresh air directed at face level with a minimum of heating.

Description

"Vorrichtung zum Heizen des Fahrgastraumes "Device for heating the passenger compartment

eines Fahrzeuges" Vorrichtung zum Heizen des Fahrgastraumes eines Fahrzeuges. of a vehicle "device for heating the passenger compartment of a Vehicle.

Die Erfindung bezieht sich auf eine Vorrichtung nach dem Oberbegriff von Patentanspruch 1.The invention relates to a device according to the preamble of claim 1.

Bei einer derartigen Vorrichtung müssen die Heizgeräte beim Erwärmen des Fahrgastraumes bei tiefen Außentemperaturen auf volle teizleistung geschaltet sein, d.h., die Luftaustrittstemperatur am Heizgerät ist extrem hoch. Bei Omnibussen mit oberhalb der Sitzreihen angeordneten Luftaustrittsdiisen, die über einen Deckenluftkanal gespeist werden, hat sich jedoch gezeigt, daß solche hohen Lufttemperaturen für den Fahrgast unangenehm sind. Der Erfindung liegt daher die Aufgabe zugrunde, die Innentemperatur im Fahrgastraum so zu regeln, daß in der oberen Zone - kurzzeitig erhöhte Innentemperaturen in der unteren Zone haben sich als nicht so störend erwiesen - keine fiir den Fahrgast unangenehmen Temperaturwerte auftreten.In such a device, the heating devices must be heated when heating of the passenger compartment switched to full heating capacity at low outside temperatures i.e. the air outlet temperature on the heater is extremely high. With buses with air outlet nozzles arranged above the rows of seats, via a ceiling air duct are fed, however, it has been shown that such high air temperatures for are uncomfortable for the passenger. The invention is therefore based on the object that To regulate the interior temperature in the passenger compartment so that in the upper zone - briefly increased internal temperatures in the lower zone have not proven to be as troublesome - there are no unpleasant temperature values for the passenger.

Die erläuterte Aufgabe ist gemäß der Erfindung in vorteilhafter Weise durch die kennzeichnenden Merkmale von Patentanspruch 1 gelöst.The stated object is according to the invention in an advantageous manner by the characterizing features of claim 1 solved.

m bei der Vorrichtung nach der Erfindung den Regelaufwand für die Heizgeräte der unteren Zone nicht zur Beriicksichtigung der Störgröße die Innentemperatur der oberen Zone erweitern zu müssen, ist in vorteilhafter Weise die Anordnung nach Patentanspruch 2 getroffen.m in the device according to the invention the control effort for Heaters in the lower zone do not take the internal temperature into account to take account of the disturbance variable To have to expand the upper zone is the arrangement according to an advantageous manner Claim 2 taken.

Wie eine Vorrichtung nach der Erfindung beispielsweise im einzelnen ausgebildet sein kann, ist im folgenden anhand einer vorteilhaften Ausführungsform für einen Omnibus beschrieben, die in der Zeichnung schematisch dargestellt ist.How a device according to the invention, for example in detail can be formed is shown below on the basis of an advantageous embodiment for a bus described, which is shown schematically in the drawing.

In der Zeichnung bedeuten Fig. 1 einen vertikalen Längsschnitt durch den Omnibus, Fig. 2 ein Regelschema für die Heizgeräte der oberen Zone des Omnibusses, und Fig. 3 ein Regelschema fiir die Heizgeräte der unteren Zone des Omnibusses.In the drawing, Fig. 1 is a vertical longitudinal section through the bus, Fig. 2 is a control diagram for the heating devices in the upper zone of the bus, and FIG. 3 shows a control diagram for the heating devices in the lower zone of the bus.

Mit BeZug auf Fig. 1 ist der Fahrgastraum eines Omnibusses 8 in eine obere Zone 7, eine Frontzone 9 im Bereich des Fahrer-bzw. Beifahrerplatzes, eine vordere untere Zone 10 sowie in eine hintere untere Zone 11 unterteilt. Im Bereich der oberen Zone 7 sind an der Decke des Fahrgastraumes zwei seitliche Decken-Luftkanäle 12 vorgesehen, die zur Speisung von Luftaustrittsdüsen 13 dienen, die jeweils oberhalb einer Sitzreihe 14 angeordnet sind. Der Decken-Luftkanal 12 geht von einer Luftverteilkmmer 15 aus, die je nach Stellung einer mluft-Klappe 18 mehr oder weniger mit einem mit der Atmosphäre in Verbindung stehenden Frischluftkanal 16 bzw. über eine Öffnung 17 mit dem Fahrgastraum in Verbindung steht. Eine wirkungsmäßig zwischen der Luftverteilkammer 15 und der vordersten Luftaustrittsdüse 13 in Decken-Luftkanal 12 angeordnetes Heizgerät 4 besteht aus einem von Kühlwasser durchströmten Wärmetauscher 19 und zwei nachgeschalteten, über einen Elektromotor 20 angetriebenen Gebläsen 21 und 22. Der Steuerteil des mit drei Drehzahlen betreibbaren Antriebsmotores 20 ist mit einem Handschalter 31 verbunden. Ein die zeitliche Kühlwassermenge des Wärmetauschers 19 bestimmendes Stellglied 23 besteht im wesentlichen aus einer von einem Eletromotor 24 angetriebenen Pumpe 25. Die Pumpe 25 saugt Kühlwasser aus dem Kühlkreislauf einer Brennkraftmaschine an, fördert dieses durch den Wärmetauscher 19, von wo es dem Niihlkreislauf wieder zurückgeleitet wird.With reference to Fig. 1, the passenger compartment of a bus 8 is in one upper zone 7, a front zone 9 in the area of the driver's or Passenger seat, one the front lower zone 10 and a rear lower zone 11 are subdivided. In the area In the upper zone 7 there are two lateral ceiling air ducts on the ceiling of the passenger compartment 12 provided, which serve to feed air outlet nozzles 13, each above a row of seats 14 are arranged. The ceiling air duct 12 starts from an air distribution feature 15, which depending on the position one mluft flap 18 more or less with a fresh air duct 16 or via, which is in communication with the atmosphere an opening 17 communicates with the passenger compartment. An effective between the air distribution chamber 15 and the foremost air outlet nozzle 13 in the ceiling air duct 12 arranged heater 4 consists of a heat exchanger through which cooling water flows 19 and two downstream fans driven by an electric motor 20 21 and 22. The control part of the drive motor 20 which can be operated at three speeds is connected to a manual switch 31. On the temporal amount of cooling water of the heat exchanger 19 determining actuator 23 consists essentially of one of an electric motor 24 driven pump 25. The pump 25 sucks cooling water from the cooling circuit of a Internal combustion engine, this promotes through the heat exchanger 19, from where it is the Niihlkreislauf is returned again.

Der ELektromotor 24 wird von einem Regler 26 gesteuert, in dem ein Grenzwert 27 - z.B. 260C - der Innentemperatur der oberen Zone 7 gespeichert ist. Ein Istwert-Geber 28, der von einer in bezug auf die Fahrzeuglängsrichtung mittleren Luftaustrittsdüse 13 beeinflußt ist, liefert ein dem Istwert proportionales und in den Regler 26 eingegebenes Signal. Der Istwert-Geber 28 kann von einem weiteren Istwert-Geber 29 für die Außentemperatur so beeinflußt sein, daß bei tieferen Außentemperaturen eine höhere Innentemperatur in der oberen Zone 7 eingestellt wird.The electric motor 24 is controlled by a controller 26 in which a Limit value 27 - e.g. 260C - of the internal temperature of the upper zone 7 is saved. An actual value transmitter 28, which is from a middle with respect to the vehicle longitudinal direction Air outlet nozzle 13 is influenced, provides a proportional to the actual value and signal input to the controller 26. The actual value transmitter 28 can be from another Actual value transmitter 29 for the outside temperature can be influenced so that at lower outside temperatures a higher internal temperature is set in the upper zone 7.

Die Innentemperatur in der unteren Zone 10 bzw. 11 wird unabhängig von der Innentemperatur der oberen Zone 7 geregelt, wie dies aus Fig. 3 hervorgeht. Die Heizgeräte 5 und 6 sind in ihrem Aufbau beziiglich Wärmetauscher 19,Elektromotor 20 und Gebläse 21 und 22 sowie Stellglied 23 dem Heizgerät 4 identisch. In der unteren Zone 10 bzw. 11 sind jeweils zwei seitliche Boden-Luftkanäle 34 bzw. 35 vorgesehen, in die von jeweils einem Heizgerät 5 bzw. 6 Luft gefördert wird, die über Luftaustrittsdüsen 36 in die untere Zone 10 bzw. 11 austritt. Die Gebläse 21,22 der Heizgeräte 5,6 saugt dabei Umluft aus der unteren Zone 10 bzw. 11 über den jeweiligen Wärmetauscher 19 an. Sowohl das Stellglied 23 als auch der Steuerteil 32 ihres Elektromotores 20 der Heizgeräte 5 werden von einem Regler 33 gesteuert, der Signale eines Sollwertstellers 37 für die Innentemperatur und eines Istwert-Gebers 38 der Innentemperatur vergleicht. Der Istwert-Geber 38 ist dabei in oder in Nähe derjenigen Öffnung des Fahrgastraumes angeordnet, aus der die Gebläse 21,22 über den Wärmetauscher 19 Umluft aus dem Fahrgastraum ansaugen. Der Istwert-Geber 38 kann dabei wiederum von einem Istwert-Geber 29 fiir die Außenluft so beeinflußt sein, daß bei tieferen Außentemperaturen eine höhere Innentemperatur eingestellt wird. Die vorstehend beschriebene Arbeitsweise und Regelung der Heizgeräte 5 gilt in entsprechender Weise auch für die hinteren Heizgeräte 6, wie dies durch die Pfeile (6) sowie die Symbole 29,33 und 38 angedeutet ist.The internal temperature in the lower zone 10 or 11 becomes independent regulated by the internal temperature of the upper zone 7, as can be seen from FIG. The heaters 5 and 6 are, in terms of their structure, heat exchangers 19 and electric motors 20 and fans 21 and 22 and actuator 23 are identical to heater 4. In the lower zone 10 and 11 are two lateral floor air ducts 34 and 35 provided, in each of which a heater 5 or 6 air is conveyed, which exits via air outlet nozzles 36 into the lower zone 10 or 11. The blowers 21, 22 of the heaters 5, 6 sucks circulating air from the lower zone 10 and 11, respectively the respective heat exchanger 19. Both the actuator 23 and the control part 32 of their electric motor 20 of the heaters 5 are controlled by a controller 33, the signals of a setpoint adjuster 37 for the internal temperature and an actual value transmitter 38 compares the internal temperature. The actual value transmitter 38 is here in or near that opening of the passenger compartment is arranged from which the fan 21,22 over the heat exchanger 19 suck in recirculated air from the passenger compartment. The actual value encoder 38 can in turn be influenced in this way by an actual value transmitter 29 for the outside air be that at lower outside temperatures a higher inside temperature is set will. The above-described mode of operation and regulation of the heaters 5 applies in a corresponding manner for the rear heaters 6, as indicated by the arrows (6) and the symbols 29, 33 and 38 is indicated.

Claims (2)

Patentanspruche: 1Vorrichtung zum Heizen des Fahrgastraumes eines Fahrzeuges mit wenigstens einem Heizgerät zur Erwärmung der oberen Zone (Kopfbereich) und wenigstens einem Heizgerät zur Erwärmung der unteren Zone (Fußbereich: des Fahrgastraumes, dadurch gekennzeichnet, daß die Heizgeräte (4 bis 6) in ihrer Leistung derart regelbar sind, daß ein vorgebbarer Grenzwert (tIG) der Innentemperatur der oberen Zone (7) nicht überschritten wird. Claims: 1 device for heating the passenger compartment of a Vehicle with at least one heater for heating the upper zone (head area) and at least one heater for heating the lower zone (foot area: the passenger compartment, characterized in that the output of the heaters (4 to 6) can be regulated in this way are that a specifiable limit value (tIG) of the internal temperature of the upper zone (7) is not exceeded. 2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß lediglich das Heizgerät (4) der oberen Zone (7) mit der Grenzwert-Regelung arbeitet.2. Apparatus according to claim 1, characterized in that only the heater (4) of the upper zone (7) works with the limit value control.
DE19782838397 1978-09-02 1978-09-02 Heater system for bus - includes separate head and feet ventilators and with limit on head duct Withdrawn DE2838397A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19782838397 DE2838397A1 (en) 1978-09-02 1978-09-02 Heater system for bus - includes separate head and feet ventilators and with limit on head duct

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19782838397 DE2838397A1 (en) 1978-09-02 1978-09-02 Heater system for bus - includes separate head and feet ventilators and with limit on head duct

Publications (1)

Publication Number Publication Date
DE2838397A1 true DE2838397A1 (en) 1980-03-13

Family

ID=6048575

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19782838397 Withdrawn DE2838397A1 (en) 1978-09-02 1978-09-02 Heater system for bus - includes separate head and feet ventilators and with limit on head duct

Country Status (1)

Country Link
DE (1) DE2838397A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4340112A (en) * 1979-08-20 1982-07-20 Diesel Kiki Company, Ltd. Vehicle air temperature control apparatus
AT395395B (en) * 1985-10-24 1992-12-10 Uwe Verken Ab TEMPERATURE CONTROL AND VENTILATION DEVICE FOR PASSENGER VEHICLES WITH LIQUID-COOLED ENGINE

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4340112A (en) * 1979-08-20 1982-07-20 Diesel Kiki Company, Ltd. Vehicle air temperature control apparatus
AT395395B (en) * 1985-10-24 1992-12-10 Uwe Verken Ab TEMPERATURE CONTROL AND VENTILATION DEVICE FOR PASSENGER VEHICLES WITH LIQUID-COOLED ENGINE

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