EP1506102A1 - Heating and/or air-conditioning installation comprising an auxiliary heating system - Google Patents

Heating and/or air-conditioning installation comprising an auxiliary heating system

Info

Publication number
EP1506102A1
EP1506102A1 EP03752659A EP03752659A EP1506102A1 EP 1506102 A1 EP1506102 A1 EP 1506102A1 EP 03752659 A EP03752659 A EP 03752659A EP 03752659 A EP03752659 A EP 03752659A EP 1506102 A1 EP1506102 A1 EP 1506102A1
Authority
EP
European Patent Office
Prior art keywords
air
heating
air conditioning
passenger compartment
conditioning system
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Withdrawn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
EP03752659A
Other languages
German (de)
French (fr)
Inventor
Bernd Kohlbecker
Hubert Krug
Werner Vogt
Andreas Zygan
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.)
Mercedes Benz Group AG
Original Assignee
DaimlerChrysler 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 DaimlerChrysler AG filed Critical DaimlerChrysler AG
Publication of EP1506102A1 publication Critical patent/EP1506102A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • B60H1/22—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant
    • B60H1/2203—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant the heat being derived from burners
    • B60H1/2212—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant the heat being derived from burners arrangements of burners for heating air
    • 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
    • B60H1/02—Heating, cooling or ventilating [HVAC] devices the heat being derived from the propulsion plant
    • B60H1/03—Heating, cooling or ventilating [HVAC] devices the heat being derived from the propulsion plant and from a source other than the propulsion plant
    • B60H1/032—Heating, cooling or ventilating [HVAC] devices the heat being derived from the propulsion plant and from a source other than the propulsion plant from the cooling liquid of the propulsion plant and from a burner
    • 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
    • B60H1/22—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant
    • B60H2001/2268—Constructional features
    • B60H2001/2293—Integration into other parts of a vehicle

Definitions

  • the invention relates to a heating and / or air conditioning system according to the preamble of claim 1.
  • auxiliary heaters are used in commercial vehicles, which heat the passenger compartment regardless of the engine waste heat at low temperatures and longer idle times.
  • DE 195 15 353 C2 shows an additional heater for a passenger compartment. This is arranged in the area of the cabin floor and connected to the passenger compartment via an air intake and an air outflow opening. If necessary, the additional heating for heating the passenger compartment is switched on.
  • a disadvantage here is in particular the insufficient distribution of the warm air in the passenger compartment, so that the passenger compartment is heated very unevenly.
  • the object of the invention is to provide a heating and / or air conditioning system for a passenger compartment, which is structurally simple and compact and has a uniform temperature control the passenger compartment.
  • the heating and / or air conditioning system should preferably be easy to regulate and have a quick response behavior.
  • the heating and / or air conditioning system should have low energy consumption and enable efficient heating.
  • the separate additional heater is designed separately from the climate box. You can e.g. B. may be arranged in the area of the cabin floor of the passenger compartment, the air conditioning box may preferably be arranged in the cockpit area apart from the additional heating.
  • the additional heater is connected to the climate box via a warm air duct, so that the air heated by the additional heater can flow into an air mixing space arranged in the climate box.
  • the auxiliary heater Due to the separate design and arrangement of the auxiliary heater, it can be arranged at a suitable location in the vehicle without occupying space in the cockpit area or in the passenger compartment. In addition, the climate box can be made quite compact.
  • the additional heater preferably has a fuel-fed burner that heats air drawn in from the passenger compartment and / or air conveyed from the outside by means of a fan.
  • the burner thus acts directly on the air to be heated and thereby enables a quickly responsive regulation and / or control of the desired temperature profile in the passenger compartment.
  • the heating energy used is also well utilized by the direct heating of the air conveyed into the passenger compartment.
  • Air from the additional heating and / or air from one of the coolant of the drive unit, in particular the internal combustion engine, can be introduced into the air mixing chamber of the climate box.
  • the air mixing space can mix and / or divide the inflowing air and guide it downstream to a plurality of outflow openings.
  • the air conditioning box and / or the additional heater can also have one or more fans for air delivery.
  • the additional heater can be designed, in particular, for heating the passenger compartment alone and / or for auxiliary heating when the drive unit is still cold during the warm-up phase.
  • air outlets lead from the outflow openings to air outlets which are distributed in the passenger compartment.
  • air outlets can be arranged in the footwell in order to heat it and / or air outlets in the area of the panes in order to defrost and / or keep them free of fogging and / or air outlets in the cockpit area for direct ventilation of the passengers.
  • the air mixing space can have manually or automatically controllable adjusting means, in particular air flaps or sliders, in order to be able to direct the air specifically to individual outflow openings and into the ventilation channels connected to them.
  • manually or automatically controllable adjusting means in particular air flaps or sliders, in order to be able to direct the air specifically to individual outflow openings and into the ventilation channels connected to them.
  • the ventilation channels have adjustable outflow nozzles at their mouth in the passenger compartment. By adjusting the outflow nozzles, the direction and / or strength and / or distribution of the air flow can be set as desired.
  • a use of the heating and / or air conditioning system according to the invention is provided in particular in the driver's cab of commercial vehicles. However, it is also possible to use the heating and / or air conditioning in other vehicle types such as. B. use motorhomes, cars or vans.
  • Figure 1 The heating and / or air conditioning in a cab of a commercial vehicle
  • Figure 2 A schematic representation of the climate box of the heating and / or air conditioning
  • FIG. 1 shows a heating and / or air conditioning system 1, which is arranged in a driver's cab 11 of a commercial vehicle for heating a passenger compartment 12.
  • the passenger compartment 12 has a cockpit with controls such as. B. steering wheel or gear lever.
  • an air conditioning box 2 is concealed, which is connected to the drive motor of the commercial vehicle and is designed for heating and / or cooling the passenger compartment 12. Since the air-conditioning box 2 can only heat or cool the passenger compartment 12 when the drive motor is in operation, the heating and / or air-conditioning system 1 also has an additional heater 4, which is used for longer breaks the heating of the passenger compartment 12 takes over.
  • the additional heater 4 is arranged in the area of the cabin floor 14 and has a burner 45 for heating air and a blower 46 for conveying air.
  • the burner is operated with fuel and is connected to the fuel tank of the commercial vehicle via a supply line.
  • the burner's exhaust gases are discharged to the outside via an exhaust pipe.
  • the fan 46 conveys air through the additional heater 4, where it is heated by the burner 45.
  • the air is sucked in via a suction opening 41 arranged in the passenger compartment 12 and an air duct 42a and then heated by the burner 45.
  • the warm air is then forwarded via a warm air line 42b to the climate box 2 arranged in the area of the cockpit.
  • the air conditioning box 2 the structure of which is shown in FIG. 2, comprises an air filter 21 for sucked-in outside air, a blower 23 for conveying air, and an evaporator 22 and a heat exchanger 26 for conditioning air.
  • the evaporator 22 draws its energy from the drive motor and is designed to cool the air.
  • the heat exchanger 26 is connected to the cooling system of the drive motor and uses its waste heat to heat the air.
  • the air conveyed by the blower 23 of the air conditioning box 2 flows through the evaporator 22 into a first air mixing space 24 and further through the heat exchanger 26 into a second air mixing space 25.
  • the second air mixing chamber 25 has a plurality of outflow openings 29, 30, 31, each of which is separately connected to air channels 33 leading into the passenger compartment 12.
  • An outflow opening 29 is designed as a defrost opening and is connected to one or more air channels 33, which lead to one or more panes of the passenger compartment. In the area of these disks, the air channels open into outflow nozzles 34, which are adjustable for targeted ventilation of the disks.
  • Another outflow opening of the air mixing chamber 25 is designed as a footwell opening 30.
  • This outflow opening 30 is connected to one or more air channels 33 which open into one or more outflow nozzles 34 arranged in the footwell of the passenger compartment 12.
  • a third outflow opening of the air mixing space 25 is designed as a direct ventilation opening 31.
  • This outflow opening 31 is connected to one or more air channels 33 which open into one or more outflow nozzles 34 arranged in the cockpit area of the passenger compartment 12.
  • These outflow nozzles 34 are designed to be adjustable, so that the direction and strength of the emerging air jet can be set.
  • actuating means are also arranged which enable effective temperature control and / or air mixing.
  • a bypass flap 27 is thus provided which, bypassing the heat exchanger 26, connects the air mixing spaces 24 and 25 directly and thus enables the passenger compartment 12 to be cooled effectively.
  • the hot air duct 42b coming from the auxiliary heater 4 opens into the air conditioning box 2 and into the air mixing spaces 24 and 25.
  • the first air mixing space 24 has an inflow opening 32 which can be closed by an air flap 28 and is connected to the warm air duct 42b.
  • the second air mixing space 25 has an inflow opening 32 which can be closed with an air flap 28 and with the warm air duct 42b connected is.
  • the air heated by the additional heater 4 can be directed via the warm air duct 42b into the first air mixing space 24 and / or optionally into the second air mixing space in order to enable the passenger compartment 12 to be heated as effectively as possible.
  • the air mixing chamber 25 mixes the inflowing air of the additional heater 4 with the air conveyed by the blower 23 of the climate box and distributes it to the outflow openings 29, 30, 31.
  • the warm air of the additional heater 4 is thus via the existing outflow openings 29, 30, 31 and air channels 33 and the outflow nozzles 34 are directed into the passenger compartment 12.
  • the distribution of the warm air of the additional heater 4 can thus be set via those outflow nozzles and air flaps 27, 28 which already set the warm air heated by the heat exchanger 26. This means that there is no difference for a user in the setting and / or heating behavior of the auxiliary heater 4 and the heater when driving.
  • the operation of the heating and / or air conditioning system 1 is simplified for the user and the ease of use increases.
  • a common control device 5 which controls and / or regulates components of the air conditioning box 2 and components of the additional heating 4.
  • a pure auxiliary heating mode in which only the auxiliary heater 4 supplies heating energy
  • a pure driving mode in which only the climate box 2 supplies conditioned air
  • mixed operation is also possible.
  • the auxiliary heater 4 can support the heat exchanger 26 to supply heating energy.
  • a variable portion of fresh air can also be added to the circulating air conveyed by the auxiliary heater 4 via a control of the fan 23 arranged in the air conditioning box 2.

Landscapes

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

Abstract

The invention relates to a heating and/or air-conditioning installation (1) for the passenger cell (12) of a vehicle. Said heating and/or air-conditioning installation (1) comprises a humidor (2) which is connected to the passenger cell (12) by means of ventilation channels (33), and a separate auxiliary heating system (4). The aim of the invention is to ensure that the heated air supplied by the auxiliary heating system (4) is efficiently regulated and/or distributed. To this end, said heated air is introduced into the passenger cell (12) via the humidor (2) and the ventilation channels (33) associated therewith.

Description

Heiz- und/oder Klimaanlage mit Zusatzheizung Heating and / or air conditioning with additional heating
Die Erfindung betrifft eine Heiz- und/oder Klimaanlage nach dem Oberbegriff des Anspruchs 1.The invention relates to a heating and / or air conditioning system according to the preamble of claim 1.
Bei Nutzfahrzeugen werden in der Praxis separate Zusatzheizungen eingesetzt, die bei tiefen Temperaturen und längeren Standzeiten die Fahrgastzelle unabhängig von der Motorabwärme beheizen.In practice, separate auxiliary heaters are used in commercial vehicles, which heat the passenger compartment regardless of the engine waste heat at low temperatures and longer idle times.
Die DE 195 15 353 C2 zeigt ein Zusatzheizgerät für eine Fahrgastzelle. Dieses ist im Bereich des Kabinenbodens angeordnet und über eine Luftansaug- und eine Luftausströmöffnung mit der Fahrgastzelle verbunden. Bei Bedarf wird die Zusatzheizung zum Beheizen der Fahrgastzelle eingeschaltet . Von Nachteil ist hier insbesondere die nur ungenügende Verteilung der Warmluft in der Fahrgastzelle, so dass die Fahrgastzelle sehr ungleichmäßig beheizt wird.DE 195 15 353 C2 shows an additional heater for a passenger compartment. This is arranged in the area of the cabin floor and connected to the passenger compartment via an air intake and an air outflow opening. If necessary, the additional heating for heating the passenger compartment is switched on. A disadvantage here is in particular the insufficient distribution of the warm air in the passenger compartment, so that the passenger compartment is heated very unevenly.
Aus der DE 195 20 122 AI ist eine Zusatzheizeinrichtung bekannt, die an den Kühlkreislauf des Antriebsmotors angeschlossen ist und über einen Brenner das Kühlwasser erhitzt. Nachteilig ist hier zum einen der konstruktiv aufwendige Eingriff in das Kühlsystem. Zum anderen ist der Wirkungsgrad relativ gering und die Heizwirkung setzt erst relativ spät ein, weil das Kühlwassersystem und Teile des Motorblocks zusätzlich mit erwärmt werden müssen.From DE 195 20 122 AI an additional heating device is known, which is connected to the cooling circuit of the drive motor and heats the cooling water via a burner. The disadvantage here is the structurally complex intervention in the cooling system. On the other hand, the efficiency is relatively low and the heating effect begins relatively late because the cooling water system and parts of the engine block must also be heated.
Aufgabe der Erfindung ist es, eine Heiz- und/oder Klimaanlage für eine Fahrgastzelle zu schaffen, die konstruktiv einfach und kompakt aufgebaut ist und eine gleichmäßige Temperierung der Fahrgastzelle gestattet. Vorzugsweise soll die Heiz- und/oder Klimaanlage gut regelbar sein und ein rasches Ansprechverhalten aufweisen. Insbesondere soll die Heiz- und/oder Klimaanlage einen geringen Energieverbrauch aufweisen und eine effiziente Beheizung ermöglichen.The object of the invention is to provide a heating and / or air conditioning system for a passenger compartment, which is structurally simple and compact and has a uniform temperature control the passenger compartment. The heating and / or air conditioning system should preferably be easy to regulate and have a quick response behavior. In particular, the heating and / or air conditioning system should have low energy consumption and enable efficient heating.
Diese Aufgabe wird erfindungsgemäß durch eine Heiz- und/oder Klimaanlage nach den Merkmalen des Anspruchs 1 gelöst.This object is achieved by a heating and / or air conditioning system according to the features of claim 1.
Die separate Zusatzheizung ist getrennt von dem Klimakasten ausgebildet. Sie kann z. B. im Bereich des Kabinenbodens der Fahrgastzelle angeordnet sein, wobei der Klimakasten abseits der Zusatzheizung vorzugsweise im Cockpitbereich angeordnet sein kann. Über einen Warmluftkanal ist die Zusatzheizung mit dem Klimakasten verbunden, so dass die durch die Zusatzheizung erwärmte Luft in einen in dem Klimakasten angeordneten Luftmischraum strömen kann.The separate additional heater is designed separately from the climate box. You can e.g. B. may be arranged in the area of the cabin floor of the passenger compartment, the air conditioning box may preferably be arranged in the cockpit area apart from the additional heating. The additional heater is connected to the climate box via a warm air duct, so that the air heated by the additional heater can flow into an air mixing space arranged in the climate box.
Durch die separate Ausbildung und Anordnung der Zusatzheizung kann diese an einem geeigneten Ort im Fahrzeug angeordnet werden, ohne dass im Cockpitbereich oder in der Fahrgastzelle Bauraum belegt wird. Zudem kann der Klimakasten recht kompakt ausgebildet werden.Due to the separate design and arrangement of the auxiliary heater, it can be arranged at a suitable location in the vehicle without occupying space in the cockpit area or in the passenger compartment. In addition, the climate box can be made quite compact.
Die Zusatzheizung weist vorzugsweise einen kraftstoffgespeisten Brenner auf, der aus der Fahrgastzelle angesaugte und/oder von außen mittels eines Lüfters geförderte Luft erwärmt . Somit wirkt der Brenner direkt auf die zu erwärmende Luft ein und ermöglicht dadurch eine schnell ansprechende Regelung und/oder Steuerung des gewünschten Temperaturverlaufs in der Fahrgastzelle . Durch die direkte Erwärmung der in die Fahrgastzelle geförderten Luft wird zudem die eingesetzte Heizenergie gut ausgenützt.The additional heater preferably has a fuel-fed burner that heats air drawn in from the passenger compartment and / or air conveyed from the outside by means of a fan. The burner thus acts directly on the air to be heated and thereby enables a quickly responsive regulation and / or control of the desired temperature profile in the passenger compartment. The heating energy used is also well utilized by the direct heating of the air conveyed into the passenger compartment.
In den Luftmischraum des Klimakastens kann Luft von der Zusatzheizung und/oder Luft von einem von dem Kühlmittel des Antriebsaggregates, insbesondere Verbrennungsmotors, gespeisten Wärmetauscher und/oder Luft von einem Verdampfer über Einströmöffnungen einströmen. Der Luftmischraum kann die einströmende Luft vermischen und/oder aufteilen und diese stromabwärts zu mehreren Ausströmöffnungen hinleiten. Der Klimakasten und/oder die Zusatzheizung kann zudem einen oder mehrere Lüfter zur Luftförderung aufweisen.Air from the additional heating and / or air from one of the coolant of the drive unit, in particular the internal combustion engine, can be introduced into the air mixing chamber of the climate box. inflow fed heat exchanger and / or air from an evaporator through inflow openings. The air mixing space can mix and / or divide the inflowing air and guide it downstream to a plurality of outflow openings. The air conditioning box and / or the additional heater can also have one or more fans for air delivery.
Die Zusatzheizung kann insbesondere zum alleinigen Beheizen der Fahrgastzelle und/oder zum unterstützenden Beheizen bei noch kaltem Antriebsaggregat während der Warmlaufphase ausgebildet sein.The additional heater can be designed, in particular, for heating the passenger compartment alone and / or for auxiliary heating when the drive unit is still cold during the warm-up phase.
Es ist vorgesehen, dass von den Ausströmöffnungen mehrere Luftkanäle zu in der Fahrgastzelle verteilt angeordneten Luftauslässen führen. So können Luftauslässe im Fußraum angeordnet sein, um diesen zu Beheizen und/oder Luftauslässe im Bereich der Scheiben angeordnet sein, um diese zu Entfrosten und/oder Beschlagsfrei zu halten und/oder Luftauslässe im Cockpitbereich zur direkten Belüftung der Fahrgäste vorgesehen sein.It is provided that a plurality of air ducts lead from the outflow openings to air outlets which are distributed in the passenger compartment. For example, air outlets can be arranged in the footwell in order to heat it and / or air outlets in the area of the panes in order to defrost and / or keep them free of fogging and / or air outlets in the cockpit area for direct ventilation of the passengers.
In einer Ausführung kann der Luftmischraum manuell oder automatisch steuerbare Stellmittel, insbesondere Luftklappen oder Schieber aufweisen, um die Luft gezielt zu einzelnen Ausströmöffnungen und in die daran angeschlossenen Belüftungskanäle leiten zu können. So ist z. B. eine gezielte Beheizung des Fußraumes oder eine schnelle Entfrostung der Scheiben möglich.In one embodiment, the air mixing space can have manually or automatically controllable adjusting means, in particular air flaps or sliders, in order to be able to direct the air specifically to individual outflow openings and into the ventilation channels connected to them. So z. B. a targeted heating of the footwell or a quick defrosting of the windows possible.
In einer vorteilhaften Ausführung ist vorgesehen, dass die Belüftungskanäle an ihrer Mündung in die Fahrgastzelle einstellbare Ausströmdüsen aufweisen. Durch das Verstellen der Ausströmdüsen kann die Richtung und/oder Stärke und/oder Verteilung des Luftstromes nach Wunsch frei eingestellt werden. Eine Verwendung der erfindungsgemäßen Heiz- und oder Klimaanlage ist insbesondere bei Fahrerkabinen von Nutzfahrzeugen vorgesehen. Jedoch ist es auch möglich, die Heiz- und oder Klimaanlage bei weiteren Fahrzeugtypen wie z. B. Reisemobilen, Personenkraftwagen oder Transportern einzusetzen.In an advantageous embodiment it is provided that the ventilation channels have adjustable outflow nozzles at their mouth in the passenger compartment. By adjusting the outflow nozzles, the direction and / or strength and / or distribution of the air flow can be set as desired. A use of the heating and / or air conditioning system according to the invention is provided in particular in the driver's cab of commercial vehicles. However, it is also possible to use the heating and / or air conditioning in other vehicle types such as. B. use motorhomes, cars or vans.
Weitere Merkmale und Ausführungsformen der Erfindung ergeben sich aus den Ansprüchen, den Figuren und derFurther features and embodiments of the invention result from the claims, the figures and the
Figurenbeschreibung. Die vorstehend genannten und nachfolgend aufgeführten Merkmale und Merkmalskombinationen sind nicht nur in der jeweils angegebenen Kombination, sondern auch in anderen Kombinationen oder in Alleinstellung verwendbar, ohne den Rahmen der Erfindung zu verlassen.Figures. The features and combinations of features mentioned above and listed below can be used not only in the combination specified in each case, but also in other combinations or on their own without departing from the scope of the invention.
In den Figuren sind weitere Ausführungen der Erfindung dargestellt und erläutert, dabei zeigen:Further embodiments of the invention are shown and explained in the figures, showing:
Figur 1: Die Heiz- und/oder Klimaanlage in einem Führerhaus eines Nutzfahrzeugs;Figure 1: The heating and / or air conditioning in a cab of a commercial vehicle;
Figur 2: Eine schematische Darstellung des Klimakastens der Heiz- und/oder Klimaanlage;Figure 2: A schematic representation of the climate box of the heating and / or air conditioning;
Die Figur 1 zeigt eine Heiz- und/oder Klimaanlage 1, die in einem Führerhaus 11 eines Nutzfahrzeugs zur Beheizung einer Fahrgastzelle 12 angeordnet ist. Die Fahrgastzelle 12 weist ein Cockpit mit daran angeordenten Bedienelementen wie z. B. Lenkrad oder Ganghebel auf. In dem Bereich des Cockpits ist ein Klimakasten 2 verdeckt eingebaut angeordnet, der mit dem Antriebsmotor des Nutzfahrzeugs verbunden ist und zum Heizen und/oder Kühlen der Fahrgastzelle 12 ausgebildet ist. Da der Klimakasten 2 die Fahrgastzelle 12 nur Heizen oder Kühlen kann, wenn der Antriebsmotor in Betrieb ist, weist die Heiz- und/oder Klimaanlage 1 noch eine Zusatzheizung 4 auf, die bei längeren Fahrpausen die Beheizung der Fahrgastzelle 12 übernimmt .FIG. 1 shows a heating and / or air conditioning system 1, which is arranged in a driver's cab 11 of a commercial vehicle for heating a passenger compartment 12. The passenger compartment 12 has a cockpit with controls such as. B. steering wheel or gear lever. In the area of the cockpit, an air conditioning box 2 is concealed, which is connected to the drive motor of the commercial vehicle and is designed for heating and / or cooling the passenger compartment 12. Since the air-conditioning box 2 can only heat or cool the passenger compartment 12 when the drive motor is in operation, the heating and / or air-conditioning system 1 also has an additional heater 4, which is used for longer breaks the heating of the passenger compartment 12 takes over.
Die Zusatzheizung 4 ist im Bereich des Kabinenbodens 14 angeordnet und weist einen Brenner 45 zum Erwärmen von Luft, sowie ein Gebläse 46 zum Fördern von Luft auf. Der Brenner wird mit Kraftstoff betrieben uns ist über eine Versorgungsleitung mit dem Kraftstofftank des Nutzfahrzeugs verbunden. Die Abgase des Brenners werden über ein Abgasrohr ins Freie abgeführt.The additional heater 4 is arranged in the area of the cabin floor 14 and has a burner 45 for heating air and a blower 46 for conveying air. The burner is operated with fuel and is connected to the fuel tank of the commercial vehicle via a supply line. The burner's exhaust gases are discharged to the outside via an exhaust pipe.
Der Lüfter 46 fördert Luft durch die Zusatzheizung 4 hindurch, wobei sie von dem Brenner 45 erhitzt wird. Die Luft wird über eine in der Fahrgastzelle 12 angeordnete Ansaugöffnung 41 und einen Luftkanal 42a angesaugt und anschließend von dem Brenner 45 erwärmt. Die Warmluft wird dann über eine Warmluftleitung 42b zu dem im Bereich des Cockpits angeordneten Klimakasten 2 weitergeleitet .The fan 46 conveys air through the additional heater 4, where it is heated by the burner 45. The air is sucked in via a suction opening 41 arranged in the passenger compartment 12 and an air duct 42a and then heated by the burner 45. The warm air is then forwarded via a warm air line 42b to the climate box 2 arranged in the area of the cockpit.
Der Klimakasten 2, dessen Aufbau in Figur 2 dargestellt ist, umfasst einen Luftfilter 21 für angesaugte Außenluft, ein Gebläse 23 zum Fördern von Luft sowie einen Verdampfer 22 und einen Wärmetauscher 26 zum Konditionieren von Luft. Der Verdampfer 22 bezieht seine Energie von dem Antriebsmotor und ist zum Kühlen der Luft ausgebildet. Der Wärmetauscher 26 ist mit dem KühlSystem des Antriebsmotors verbunden und nutzt dessen Abwärme zum Erhitzen der Luft. Die von dem Gebläse 23 des Klimakastens 2 geförderte Luft strömt durch den Verdampfer 22 in einen ersten Luftmischraum 24 und weiter durch den Wärmetauscher 26 in einen zweiten Luftmischraum 25.The air conditioning box 2, the structure of which is shown in FIG. 2, comprises an air filter 21 for sucked-in outside air, a blower 23 for conveying air, and an evaporator 22 and a heat exchanger 26 for conditioning air. The evaporator 22 draws its energy from the drive motor and is designed to cool the air. The heat exchanger 26 is connected to the cooling system of the drive motor and uses its waste heat to heat the air. The air conveyed by the blower 23 of the air conditioning box 2 flows through the evaporator 22 into a first air mixing space 24 and further through the heat exchanger 26 into a second air mixing space 25.
Der zweite Luftmischraum 25 weist mehrere Ausströmöffnungen 29, 30, 31 auf, die jeweils separat mit in die Fahrgastzelle 12 führenden Luftkanälen 33 verbunden sind. Eine Ausströmöffnung 29 ist als Defrostöffnung ausgebildet und mit einem oder mehreren Luftkanälen 33 verbunden, die zu einer oder mehreren Scheiben der Fahrgastzelle führen. Im Bereich dieser Scheiben münden die Luftkanäle in Ausströmdüsen 34, die zum gezielten Belüften der Scheiben einstellbar sind.The second air mixing chamber 25 has a plurality of outflow openings 29, 30, 31, each of which is separately connected to air channels 33 leading into the passenger compartment 12. An outflow opening 29 is designed as a defrost opening and is connected to one or more air channels 33, which lead to one or more panes of the passenger compartment. In the area of these disks, the air channels open into outflow nozzles 34, which are adjustable for targeted ventilation of the disks.
Eine weitere Ausströmöffnung des Luftmischraumes 25 ist als Fußraumöffnung 30 ausgebildet. Diese Ausströmöffnung 30 ist mit einem oder mehreren Luftkanälen 33 verbunden, die in eine oder mehrere im Fußraum der Fahrgastzelle 12 angeordnete Ausströmdüsen 34 münden.Another outflow opening of the air mixing chamber 25 is designed as a footwell opening 30. This outflow opening 30 is connected to one or more air channels 33 which open into one or more outflow nozzles 34 arranged in the footwell of the passenger compartment 12.
Eine dritte Ausströmöffnung des Luftmischraumes 25 ist als Direktbelüftungsöffnung 31 ausgebildet. Diese Ausströmöffnung 31 ist mit einem oder mehreren Luftkanälen 33 verbunden, die in eine oder mehrere im Cockpitbereich der Fahrgastzelle 12 angeordnete Ausströmdüsen 34 münden. Diese Ausströmdüsen 34 sind einstellbar ausgebildet, so dass Richtung und Stärke des austretenden Luftstrahles einstellbar sind.A third outflow opening of the air mixing space 25 is designed as a direct ventilation opening 31. This outflow opening 31 is connected to one or more air channels 33 which open into one or more outflow nozzles 34 arranged in the cockpit area of the passenger compartment 12. These outflow nozzles 34 are designed to be adjustable, so that the direction and strength of the emerging air jet can be set.
Diese Anordnung von Luftkanälen 33 und Ausströmö fnungen 29, 30, 31 bzw. Ausströmdüsen 34 ermöglicht eine möglichst effektive und gezielte Verteilung der Warm- oder Kaltluft in der Fahrgastzelle 12 und somit ein gezieltes und rasches Erreichen der gewünschten Temperatur .This arrangement of air channels 33 and Ausströmö openings 29, 30, 31 and Ausströmdüsen 34 enables the most effective and targeted distribution of hot or cold air in the passenger compartment 12 and thus a targeted and rapid reaching of the desired temperature.
In dem Luftmischraum 24, 25 sind weiterhin Stellmittel angeordnet, die eine effektive Temperierung und/oder Luftmischung ermöglichen. So ist eine Bypassklappe 27 vorgesehen, die unter Umgehung des Wärmetauschers 26 die Luftmischräume 24 und 25 direkt verbindet und so eine effektive Kühlung der Fahrgastzelle 12 ermöglicht.In the air mixing chamber 24, 25, actuating means are also arranged which enable effective temperature control and / or air mixing. A bypass flap 27 is thus provided which, bypassing the heat exchanger 26, connects the air mixing spaces 24 and 25 directly and thus enables the passenger compartment 12 to be cooled effectively.
Der von der Zusatzheizung 4 kommende Warmluftkanal 42b mündet in den Klimakasten 2 und in die Luftmischräume 24 und 25. Der erste Luf mischraum 24 weist eine Einströmöffnung 32 auf, die mit einer Luftklappe 28 verschließbar und mit dem Warmluftkanal 42b verbunden ist. Ebenso weist der zweite Luftmischraum 25 eine Einströmöffnung 32 auf, die mit einer Luftklappe 28 verschließbar und mit dem Warmluftkanal 42b verbunden ist. So kann die von der Zusatzheizung 4 erwärmte Luft über den Warmluftkanal 42b in den ersten Luftmischraum 24 und/oder wahlweise in den zweiten Luftmischraum geleitet werden, um eine möglichst effektive Beheizung der Fahrgastzelle 12 zu ermöglichen.The hot air duct 42b coming from the auxiliary heater 4 opens into the air conditioning box 2 and into the air mixing spaces 24 and 25. The first air mixing space 24 has an inflow opening 32 which can be closed by an air flap 28 and is connected to the warm air duct 42b. Likewise, the second air mixing space 25 has an inflow opening 32 which can be closed with an air flap 28 and with the warm air duct 42b connected is. The air heated by the additional heater 4 can be directed via the warm air duct 42b into the first air mixing space 24 and / or optionally into the second air mixing space in order to enable the passenger compartment 12 to be heated as effectively as possible.
Der Luftmischraum 25 mischt die einströmende Luft der Zusatzheizung 4 mit der von dem Gebläse 23 des Klimakastens geförderten Luft und verteilt diese auf die Ausströmöffnungen 29, 30, 31. Die Warmluft der Zusatzheizung 4 wird somit über die vorhandenen Ausströmöffnungen 29, 30, 31 und Luftkanäle 33 sowie die Ausströmdüsen 34 in die Fahrgastzelle 12 geleitet. Die Verteilung der Warmluft der Zusatzheizung 4 ist somit über diejenigen Ausströmdüsen und Luftklappen 27, 28 einstellbar, die bereits die von dem Wärmetauscher 26 erwärmte Warmluft einstellen. Damit ist für einen Benutzer kein Unterschied im Einstell- und/oder Heizverhalten der Zusatzheizung 4 und der Heizung im Fahrbetrieb gegeben. Die Bedienung der Heiz- und/oder Klimaanlage 1 vereinfacht sich für den Benutzer und es erhöht sich der Bedienungskomfort.The air mixing chamber 25 mixes the inflowing air of the additional heater 4 with the air conveyed by the blower 23 of the climate box and distributes it to the outflow openings 29, 30, 31. The warm air of the additional heater 4 is thus via the existing outflow openings 29, 30, 31 and air channels 33 and the outflow nozzles 34 are directed into the passenger compartment 12. The distribution of the warm air of the additional heater 4 can thus be set via those outflow nozzles and air flaps 27, 28 which already set the warm air heated by the heat exchanger 26. This means that there is no difference for a user in the setting and / or heating behavior of the auxiliary heater 4 and the heater when driving. The operation of the heating and / or air conditioning system 1 is simplified for the user and the ease of use increases.
Über ein gemeinsames Steuergerät 5, das Komponenten des Klimakastens 2 und Komponenten der Zusatzheizung 4 steuert und/oder regelt, wird der Bedienungskomfort und die Funktionalität noch weiter erhöht. So ist neben einem reinen Standheizungsbetrieb, bei dem nur die Zusatzheizung 4 Heizenergie liefert, und einem reinen Fahrbetrieb, bei dem nur der Klimakasten 2 konditionierte Luft liefert, auch ein Mischbetrieb möglich. Insbesondere kann bei kaltem Antriebsmotor zu Fahrtbeginn die Zusatzheizung 4 unterstützend zu dem Wärmetauscher 26 Heizenergie liefern. Auch kann im Standbetrieb der von der Zusatzheizung 4 geförderten Umluft über eine Ansteuerung des im Klimakasten 2 angeordneten Gebläses 23 ein variabler Anteil Frischluft beigemischt werden. The ease of use and the functionality are further increased by means of a common control device 5, which controls and / or regulates components of the air conditioning box 2 and components of the additional heating 4. Thus, in addition to a pure auxiliary heating mode, in which only the auxiliary heater 4 supplies heating energy, and a pure driving mode, in which only the climate box 2 supplies conditioned air, mixed operation is also possible. In particular, when the drive motor is cold, the auxiliary heater 4 can support the heat exchanger 26 to supply heating energy. A variable portion of fresh air can also be added to the circulating air conveyed by the auxiliary heater 4 via a control of the fan 23 arranged in the air conditioning box 2.

Claims

Patentansprüche claims
1. Heiz- und/oder Klimaanlage zur Belüftung einer Fahrgastzelle eines Fahrzeugs, insbesondere Nutzfahrzeugs, mit einem Klimakasten, der ein Gebläse und einen an einen von dem Kühlmittel eines Antriebsaggregates gespeisten, luftdurchstrδ ten Wärmetauscher und einen Luftmischraum umfasst, der Ausströmöffnungen zum Anschließen von in die Fahrgastzelle führenden Belüftungskanälen aufweist, sowie mit einer separaten Zusatzheizung, die einen kraftstoffbetriebenen Brenner zum Erwärmen von Luft aufweist, dadurch gekennzeichnet, dass der Klimakasten (2) eine Einströmöffnung (32) aufweist und die separate Zusatzheizung (4) über einen Warmluftkanal (42b) mit der Einströmöffnung (32) verbunden ist.1.Heating and / or air conditioning system for ventilation of a passenger compartment of a vehicle, in particular a commercial vehicle, with an air conditioning box, which comprises a blower and an air-permeable heat exchanger fed to the coolant of a drive unit and an air mixing space, the outflow openings for connecting in has the ventilation ducts leading the passenger compartment, and with a separate additional heater, which has a fuel-operated burner for heating air, characterized in that the air conditioning box (2) has an inflow opening (32) and the separate additional heater (4) via a warm air duct (42b) is connected to the inflow opening (32).
2. Heiz- und/oder Klimaanlage nach Anspruch 1,2. heating and / or air conditioning system according to claim 1,
dadurch gekennzeichnet, dass der Klimakasten (2) einen Luftmischraum (24, 25) und eine einstellbare Luftmischklappe (28) zum Verschließen und/oder Freigeben der Einströmöffnung (32) aufweist. characterized in that the air conditioning box (2) has an air mixing space (24, 25) and an adjustable air mixing flap (28) for closing and / or releasing the inflow opening (32).
3. Heiz- und/oder Klimaanlage nach Anspruch 1 oder 2,3. heating and / or air conditioning system according to claim 1 or 2,
dadurch gekennzeichnet, dass der Luftmischraum (24, 25) die Warmluft der separaten Zusatzheizung (4) und die von einem Gebläse (23) des Klimakastens (2) geförderte Luft vermischt.characterized in that the air mixing space (24, 25) mixes the warm air of the separate additional heater (4) and the air conveyed by a blower (23) of the climate box (2).
4. Heiz- und/oder Klimaanlage nach einem der Ansprüche 1 bis 3,4. heating and / or air conditioning system according to one of claims 1 to 3,
dadurch gekennzeichnet, dass der Luftmischraum (24, 25) die Warmluft der separaten Zusatzheizung (4) und/oder von einem Gebläse (23) des Klimakastens (2) geförderte Luft auf die Ausströmöffnungen (29, 30, 31) verteilt.characterized in that the air mixing space (24, 25) distributes the warm air of the separate additional heater (4) and / or air conveyed by a blower (23) of the climate box (2) to the outflow openings (29, 30, 31).
5. Heiz- und/oder Klimaanlage nach einem der Ansprüche 1 bis 4,5. heating and / or air conditioning system according to one of claims 1 to 4,
dadurch gekennzeichnet, dass die Belüftungskanäle (33) so angeordnet sind, dass die Warmluft der separaten Zusatzheizung (4) über die Ausstrδmungsöffnungen (29, 30, 31) des Luftmischraumes (24, 25) in die Fahrgastzelle (12) strömt.characterized in that the ventilation channels (33) are arranged such that the warm air of the separate additional heater (4) flows into the passenger compartment (12) via the outflow openings (29, 30, 31) of the air mixing space (24, 25).
6. Heiz- und/oder Klimaanlage nach Anspruch 5,6. heating and / or air conditioning system according to claim 5,
dadurch gekennzeichnet, dass die Belüftungskanäle (33) einstellbare Ausströmdüsen (34) aufweisen und dass die Verteilung der Warmluft der separaten Zusatzheizung (4) , vorzugsweise deren Austrittsrichtung und/oder Intensität, in der Fahrgastzelle (12) über diese Ausströmdüsen (34) frei einstellbar ist. Heiz- und/oder Klimaanlage nach einem der Ansprüche 1 bis 6,characterized in that the ventilation channels (33) have adjustable outflow nozzles (34) and in that the distribution of the warm air of the separate additional heater (4), preferably its outlet direction and / or intensity, can be freely adjusted in the passenger compartment (12) via these outflow nozzles (34) is. Heating and / or air conditioning system according to one of claims 1 to 6,
dadurch gekennzeichnet, dass der Klimakasten (2) und die separate Zusatzheizung (4) ein gemeinsames Steuergerät (5) aufweisen, wobei das Steuergerät (5) die Leistung, vorzugsweise Temperatur und/oder Luftmenge des Klimakastens (2) und/oder der separaten Zusatzheizung (4) zum Erreichen einer Solltemperatur in der Fahrgastzelle (12) steuert und/oder regelt . characterized in that the air conditioning box (2) and the separate auxiliary heater (4) have a common control unit (5), the control unit (5) the power, preferably temperature and / or air volume of the air conditioning unit (2) and / or the separate auxiliary heater (4) controls and / or regulates to reach a target temperature in the passenger compartment (12).
EP03752659A 2002-05-17 2003-03-26 Heating and/or air-conditioning installation comprising an auxiliary heating system Withdrawn EP1506102A1 (en)

Applications Claiming Priority (3)

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DE2002122073 DE10222073A1 (en) 2002-05-17 2002-05-17 Heating and / or air conditioning with additional heating
DE10222073 2002-05-17
PCT/EP2003/003115 WO2003097390A1 (en) 2002-05-17 2003-03-26 Heating and/or air-conditioning installation comprising an auxiliary heating system

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DE10222073A1 (en) 2003-12-04
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