NL2028582B1 - Vehicle cabin climate control system - Google Patents

Vehicle cabin climate control system Download PDF

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Publication number
NL2028582B1
NL2028582B1 NL2028582A NL2028582A NL2028582B1 NL 2028582 B1 NL2028582 B1 NL 2028582B1 NL 2028582 A NL2028582 A NL 2028582A NL 2028582 A NL2028582 A NL 2028582A NL 2028582 B1 NL2028582 B1 NL 2028582B1
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NL
Netherlands
Prior art keywords
air
vehicle cabin
cooled
climate control
vehicle
Prior art date
Application number
NL2028582A
Other languages
Dutch (nl)
Inventor
Huijben Cornelis
Kornelius Dijken Durandus
Johannes Magdalena Graaf Marc
Original Assignee
Atlas Technologies Holding Bv
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 Atlas Technologies Holding Bv filed Critical Atlas Technologies Holding Bv
Priority to NL2028582A priority Critical patent/NL2028582B1/en
Priority to PCT/EP2022/067760 priority patent/WO2023275067A1/en
Application granted granted Critical
Publication of NL2028582B1 publication Critical patent/NL2028582B1/en

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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
    • B60H1/00007—Combined heating, ventilating, or cooling devices
    • B60H1/00021—Air flow details of HVAC devices
    • 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
    • B60H1/039—Heating, cooling or ventilating [HVAC] devices the heat being derived from the propulsion plant and from a source other than the propulsion plant from air leaving the interior of the vehicle, i.e. heat recovery
    • 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
    • B60H1/00007—Combined heating, ventilating, or cooling devices
    • B60H1/00021—Air flow details of HVAC devices
    • B60H2001/0015—Temperature regulation
    • B60H2001/00178—Temperature regulation comprising an air passage from the HVAC box to the exterior of the cabin

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  • 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 pertains to a vehicle cabin climate control system, comprising: - an airtreatment device, comprising: - an air cooler comprising an air cooler inlet, adapted to generate a cooled air flow, - an air heater comprising an air heater inlet which is arranged to receive a first portion of the cooled air flow, and adapted to heat the first portion of the cooled air flow to generate a heated air flow, - a cold air discharge, to receive a second portion of the cooled air flow and to discharge the second portion of the cooled air flow to a location outside a vehicle cabin, the cold air discharge being arranged to keep the second portion of the cooled air flow outside the air heater, - a primary cabin air inlet, to introduce at least a part of the heated airflow into the vehicle cabin.

Description

P34957NLOO/NBL Vehicle cabin climate control system The invention pertains to a vehicle cabin climate control system. In particular in electric vehicles, the vehicle cabin climate control system consumes a considerable amount of energy. Several solutions have been proposed to reduce the amount of energy needed for vehicle cabin climate control. For example, DE102015115196 discloses a system which comprises a peripheral heat exchanger. In this peripheral heat exchanger, air that is introduced into the vehicle cabin climate control system from outside the vehicle flows through one side of the peripheral heat exchanger and air that is expelled from the vehicle cabin flows through the other side of the peripheral heat exchanger. This way, heat exchange takes place between the incoming air and the outgoing air, therewith pre-heating or pre- cooling the incoming air is obtained, depending on whether the temperature in the vehicle cabin is above or below the temperature of the outside air. This way, the heating or cooling that has to be done by the vehicle cabin climate control system is reduced, and therewith, the energy consumption is reduced.
However, the effect of this system on the total energy consumption of the vehicle cabin climate control system is limited. The invention aims to provide an energy efficient vehicle cabin climate control system.
This object is obtained by a vehicle cabin climate control system which comprises: - an air treatment device, which comprises: - an air cooler comprising an air cooler inlet for receiving an air flow, which air cooler is adapted to generate a cooled air flow from the air flow that is received through the air cooler inlet, - an air heater which is arranged downstream of the air cooler, which air heater comprises an air heater inlet which is arranged to receive a first portion of the cooled air flow, and which air heater is adapted to heat the first portion of the cooled air flow to generate a heated air flow, - a cold air discharge, which is arranged to receive a second portion of the cooled air flow that is generated by the air cooler and to discharge the second portion of the cooled air flow to a location outside a vehicle cabin, wherein the cold air discharge is arranged to keep the second portion of the cooled air flow outside the air heater,
2.
- a primary cabin air inlet, which is arranged to receive the heated air flow from the air heater and introduce at least a part of the heated airflow into the vehicle cabin.
The vehicle cabin climate control system according to the invention comprises an air treatment device which comprises an air cooler and an air heater. The air heater is arranged downstream of the air cooler, downstream being related to the direction of the air flow through the air treatment device. So, the air flows through the air cooler before at least a part of the air flows through the air heater.
The air cooler of the air treatment device comprises an air cooler inlet for receiving an air flow.
The air flow for example is obtained from outside air that is introduced into the vehicle cabin climate control system from outside of the vehicle. Optionally, the vehicle cabin climate control system comprises an air inlet system having an air inlet. The air inlet system is adapted to allow outside air to enter the vehicle climate cabin control system and to generate an inlet air flow into the vehicle cabin climate control system, which inlet air flow is generated from outside air entering the vehicle cabin climate control system via the air inlet. The air inlet is arranged upstream of the air cooler inlet, upstream being related to the direction of the air flow through the vehicle cabin climate control system. So, the air flows through the air inlet before it flows through the air cooler inlet. Optionally, the air inlet system further comprises a flow device to actively generate the air flow and/or to provide a required flow rate for the inlet air flow. The flow device is or comprises for example a fan.
Alternatively or in addition, the air flow may comprise air that is recirculated from the vehicle cabin of the vehicle in which the vehicle cabin climate control system is arranged.
The air cooler is adapted to generate a cooled air flow from the air flow that is received through the air cooler inlet. The air cooler for example is or comprises an evaporator.
The air treatment device of the vehicle cabin climate control system according to the invention further comprises an air heater which is arranged downstream of the air cooler, downstream being related to the direction of the air flow through the air treatment device. So, the air flows through the air cooler before at least a part of the air flows through the air heater.
The air heater of the air treatment device comprises an air heater inlet which is arranged to receive a first portion of the cooled air flow.
The air heater of the air treatment device is adapted to heat the first portion of the cooled air flow to generate a heated air flow. For example, the air heater of the air treatment device is or comprises a condenser.
-3- The vehicle cabin climate control system according to the invention further comprises a cold air discharge. The cold air discharge is arranged to receive a second portion of the cooled air flow that is generated by the air cooler and to discharge the second portion of the cooled air flow to a location outside a vehicle cabin. The cold air discharge is arranged to keep the second portion of the cooled air flow outside the air heater.
So, in accordance with the invention, the vehicle cabin climate control system is adapted to allow the cooled air flow that is generated by the air cooler of the air treatment device to be split in a first portion that is to be directed to the air heater and a second portion that is not directed to the air heater of the air treatment device but instead is directed to outside the vehicle cabin (of the vehicle in which the vehicle cabin climate control system is arranged), optionally to outside the vehicle in which the vehicle cabin climate control system is arranged. Optionally, a valve is present which in addition to splitting the cooled air flow into a first portion and a second portion, also allows to block the cold air discharge so the entire cooled air flow is directed to the air heater and/or to block the flow path from the air cooler to the air heater so the entire cooled air flow is directed to the cold air discharge.
The vehicle cabin climate control system according to the invention further comprises a primary cabin air inlet, which is arranged to receive the heated air flow from the air heater and introduce at least a part of the heated airflow into the vehicle cabin.
In vehicle cabin climate control systems, an air cooler is often used for dehumidifying air, for example air that is withdrawn from the outside environment of the vehicle and/or air that is recirculated from the vehicle cabin. By cooling this air, the air gets drier. In general, the colder the air gets, the less moisture it is able to contain. If the air is cooled to a temperature at or below the dew point, water vapour condensates from the air.
However, this dehumidified air often has a temperature which is below the temperature at which the air should be introduced into the vehicle cabin of the vehicle in which the vehicle cabin climate control system is arranged for obtaining the desired temperature in the vehicle cabin, for example the desired cabin temperature as set by an occupant of the vehicle.
On the other hand, it is often not necessary to heat the entire cooled air flow as generated by the air cooler of the air treatment device in order to obtain the desired vehicle cabin temperature. The desired vehicle cabin temperature can in those cases also be obtained by heating just a portion of the cooled air flow. The portion of the cooled air flow that does not have to be heated, does not pass through the air heater of the air treatment device and remains outside this air heater, so no energy is wasted on heating this part of the cooled air flow.
-4- So, in the vehicle cabin climate control system according to the invention, cold air that is not needed for heating the vehicle cabin, is not heated by the air heater of the air treatment device. Therewith, energy consumption of the vehicle cabin climate control system is reduced.
In an embodiment of the vehicle cabin climate control system according to the invention, the air cooler further comprises a first air cooler outlet which is adapted to discharge the cooled air flow from the air cooler. In addition, the vehicle cabin climate control system further comprises a first duct which extends between the first air cooler outlet and the air heater inlet. Furthermore, the cold air discharge comprises a second duct which is connected to the first duct.
So, in this embodiment the cooled airflow is split into a first portion and a second portion at a location between air cooler and the air heater, downstream of the air cooler and upstream of the air heater.
This is a practical embodiment which can be used in many different vehicle lay-outs.
In an embodiment of the vehicle cabin climate control system according to the invention, the air cooler further comprises a first air cooler outlet which is adapted to discharge the first portion the cooled air flow from the air cooler and a second air cooler outlet which is adapted to discharge the second portion of the cooled air flow from the air cooler. Furthermore, the vehicle cabin climate control system further comprises a first duct which extends between the first air cooler outlet and the air heater inlet. The cold air discharge is connected to or formed by the second air cooler outlet.
So, in this embodiment the cooled airflow is split into a first portion an a second portion at a location within the air cooler.
This is a practical embodiment which is particularly suitable for compact vehicle lay-outs or lay-outs in which there is not much room for components close to the air treatment device.
In an embodiment of the vehicle cabin climate control system according to the invention, the vehicle cabin climate control system further comprises an air exhaust line which is arranged to receive an air flow from the vehicle cabin and discharge at least a portion of this air flow outside the vehicle. Furthermore, the cold air discharge is arranged to discharge the second portion of the cooled air flow into the air exhaust line at a cooled air injection point.
Humidity and carbon dioxide build up in the air of a closed vehicle cabin. As in particular an increased concentration of carbon dioxide is dangerous — it can for example make a driver sleepy — some of the air in the vehicle cabin has to be removed from the vehicle cabin and be replaced with fresh air from outside the vehicle cabin. An air exhaust line is provided to allow
-5- air to be removed from the vehicle cabin. The second portion of cooled air, which does not pass through the air heater of the air treatment system, is in this embodiment discharged into the air exhaust line.
Optionally, the cold air discharge comprises a cold air discharge duct which is connected to the air exhaust line. In an embodiment in which the vehicle cabin climate control system comprises a first duct which extends between a first air cooler outlet and the air heater inlet and the cold air discharge comprises a second duct which is connected to the first duct, the cold air discharge duct for example is, comprises or is connected to the second duct. In an embodiment in which the air cooler further comprises a first air cooler outlet which is adapted to discharge the first portion the cooled air flow from the air cooler and a second air cooler outlet which is adapted to discharge the second portion of the cooled air flow from the air cooler and the cold air discharge is connected to or formed by the second air cooler outlet, the cold air discharge duct for example is arranged and/or extends between the second air cooler outlet and the air exhaust line.
Optionally, in this embodiment a peripheral heat exchanger is provided in or forms part of the air exhaust line, with the air flow from the exhaust line passing through for example a side passage of the peripheral heat exchanger. Optionally, an inlet air flow passes through the other side passage, for example a first side passage, of the peripheral heat exchanger. Optionally, the side passage of the peripheral heat exchanger through which the air flow from the air exhaust line passes is arranged downstream of the cooled air injection point. Optionally, the peripheral heat exchanger is or comprises an enthalpy exchanger.
This embodiment allows to reduce the number of openings in the vehicle body, which is for example advantageous for aerodynamic reasons. In case a peripheral heat exchanger is present, this allows to pre-warm of pre-cool the inlet air flow before it reaches the air cooler inlet.
In an embodiment of the vehicle cabin climate control system according to the invention, the vehicle cabin climate control system further comprises a condensate collector which is arranged to receive condensate that is generated in the air cooler.
Optionally, the condensate collector is connected to a further vehicle temperature control system and/or further vehicle humidity control system. For example, the condensate collector is connected to a radiator system of the vehicle in which the vehicle cabin climate control system is arranged.
In this embodiment, the generated condensate (which in general will be water) is used within the vehicle instead of e.g. being dumped on a street or parking lot.
-6- In an embodiment of the vehicle cabin climate control system according to the invention, the vehicle cabin climate control system further comprises a valve system to control the flow rate of the first portion of the cooled air flow and/or the flow rate of the second portion of the cooled air flow, which valve system comprises a valve controller to control a setting of the valve system.
This allows to tune the ratio between a flow rate of the first portion of the cooled and a flow rate of the second portion of the cooled air, e.g. between a mass flow rate of the first portion of the cooled and a mass flow rate of the second portion of the cooled air and/or between a volumetric flow rate of the first portion of the cooled and a volumetric flow rate of the second portion of the cooled air.
Optionally, the vehicle cabin climate control system further comprises a cabin sensor system for measuring a value of a cabin climate parameter in the vehicle cabin. The valve controller is adapted to set the valve system at an operating point corresponding to a desired flow rate of the first portion of the cooled air flow and/or the second portion of the cooled air flow based on the measured value of the cabin climate parameter. Optionally, one or more other parameters, e.g. outside climate parameters and/or settings provided by a vehicle occupant, may be taken into account as well by the valve controller. The cabin climate parameter is for example temperature, humidity, relative humidity and/or carbon dioxide level. Optionally, the cabin sensor system comprises a plurality of sensors, e.g. climate parameter sensors and/or other sensors, wherein different sensors of the plurality of sensors measure different parameters and/or wherein different sensors of the plurality of sensors measure parameters at different locations.
Optionally, alternatively or in addition, the vehicle cabin climate control system further comprises an outside sensor system for measuring a value of an outside climate parameter outside of the vehicle cabin. The valve controller is adapted to set the valve system at an operating point corresponding to a desired flow rate of the first portion of the cooled air flow and/or the second portion of the cooled air flow based on the measured value of the outside climate parameter. Optionally, one or more other parameters, e.g. cabin climate parameters and/or settings provided by a vehicle occupant, may be taken into account as well by the valve controller. The outside climate parameter is for example temperature, humidity, and/or relative humidity. Optionally, the outside sensor system comprises a plurality of sensors, e.g. climate parameter sensors and/or other sensors, wherein different sensors of the plurality of sensors measure different parameters and/or wherein different sensors of the plurality of sensors measure parameters at different locations.
In an embodiment, the vehicle cabin climate control system according to the invention further comprises:
-7- - a first air treatment entry point, which is arranged upstream of the air cooler, - a second air treatment entry point, which is arranged between the air cooler and the air heater, - an entry point valve system which is arranged downstream of the air inlet and upstream of the first air treatment entry point and upstream of the second air treatment entry point, which entry point valve system has a first operational mode and a second operational mode which is different from the first operational mode, wherein in the first operational mode the entry point valve system is set to direct at least a part of the inlet air flow to the first air treatment entry point, and wherein in the second operational mode the entry point valve system is set to direct at least a part of the inlet air flow to the second air treatment entry point.
The invention further pertains to a method for climate control in a vehicle cabin, which method comprises the following steps: - by an air cooler of a vehicle cabin climate control system, cooling an air flow and therewith generate a cooled air flow, - by an air heater of the vehicle cabin climate control system, heating a first portion of the cooled air flow to a desired temperature and therewith generate a heated air flow, - introducing at least a portion of the heated air flow into a vehicle cabin, - keeping a second portion of the cooled air flow outside the air heat of the vehicle cabin climate control system and discharging the second portion of the cooled air flow to outside the vehicle cabin climate control system.
In accordance with the method of the invention, an air flow is cooled by an air cooler of a vehicle cabin climate control system, e.g.by an air cooler of an air treatment device of a vehicle cabin climate control system, e.g. of an air treatment device of a vehicle cabin climate control system according to the invention. By this cooling, a cooled air flow is generated.
Then, a first portion of the cooled air flow is heated to a desired temperature, by an air heater of the vehicle cabin climate control system e.g.by an air heater of an air treatment device of a vehicle cabin climate control system, e.g. of an air treatment device of a vehicle cabin climate control system according to the invention. By this heating, a heated air flow is generated.
Then, at least a portion of the heated air flow is introduced into a vehicle cabin, i.e. in the vehicle cabin of the same vehicle in which the vehicle cabin climate control system is arranged.
Meanwhile, a second portion of the cooled air flow is kept outside the air heater of the vehicle cabin climate control system. So, the second portion of the cooled air flow does not
-8- pass through the air heater. The second portion of the cooled air flow is discharged to outside the vehicle cabin climate control system, e.g. to outside the vehicle in which the vehicle cabin climate control system is arranged.
So, in accordance with the invention, the cooled air flow is split into at least a first portion and a second portion.
The method according to the invention is for example carried out using a vehicle cabin climate control system according to the invention.
In an embodiment of the method according to the invention, the air flow is cooled by the air cooler to the dew point or to below the dew point of the air in the air flow.
In an embodiment of the method according to the invention, the method further comprises the steps of: - passing at least a part of the second portion of the cooled air flow through a heat exchanger, e.g. a peripheral heat exchanger, - then, discharging this at least part of the second portion of the cooled air flow to outside a vehicle in which the vehicle cabin climate control system is arranged.
In this embodiment, the cooled air is used to cool another air flow and/or a liquid and/or a vehicle part. This may for example be used to further increase the energy efficiency of the vehicle.
In an embodiment of the method according to the invention, the method further comprises the steps of: - measuring a cabin climate parameter, - adjusting the flow rate of the first portion of the cooled air flow and/or the flow rate of the second portion of the cooled air flow on the basis of the measured cabin climate parameter.
Optionally, one or more other parameters, e.g. outside climate parameters and/or settings provided by a vehicle occupant, may be taken into account as well when adjusting the flow rate of the first portion of the cooled air flow and/or the flow rate of the second portion of the cooled air. The cabin climate parameter is for example temperature, humidity, relative humidity and/or carbon dioxide level.
In an embodiment of the method according to the invention, the method further comprises the steps of: - measuring an outside climate parameter,
-9.- - adjusting the flow rate of the first portion of the cooled air flow and/or the flow rate of the second portion of the cooled air flow on the basis of the measured outside climate parameter.
Optionally, one or more other parameters, e.g. cabin climate parameters and/or settings provided by a vehicle occupant, may be taken into account as well when adjusting the flow rate of the first portion of the cooled air flow and/or the flow rate of the second portion of the cooled air. The outside climate parameter is for example temperature, humidity, relative and/or humidity.
The invention further pertains to a computer program, which when executed on a computer, e.g. a computer of a vehicle and/or a computer of a vehicle cabin climate control system, causes a vehicle climate control system according to the invention to perform the steps of: - obtaining measurement data from a climate parameter sensor, - obtaining information about a vehicle cabin temperature set point, - based on the obtained measurement data and vehicle cabin temperature set point, determining the desired flow rate of the first portion of the cooled air flow of a vehicle cabin climate control system according to the invention.
Optionally, the computer program, when executed on the computer further causes a vehicle climate control system according to the invention which further comprises a valve system to control the flow rate of the first portion of the cooled air flow and/or the flow rate of the second portion of the cooled air flow, which valve system comprises a valve controller to control a setting of the valve system | to perform the step of instructing the valve controller to set the valve system such that the desired flow rate of the first portion of the cooled air flow is obtained.
The obtained measurement data for example relates to vehicle cabin temperature, vehicle cabin humidity, vehicle cabin carbon dioxide level, outside air temperature and/or outside air humidity.
The invention further pertains to a vehicle comprising a vehicle cabin climate control system according to the invention.
The invention will be described in more detail below under reference to the drawing, in which in a non-limiting manner exemplary embodiments of the invention will be shown. The drawing shows in: Fig. 1: schematically, an embodiment of a vehicle cabin climate control system according to the invention,
-10- Fig. 2: schematically, a first variant of the embodiment according to fig. 1, Fig. 3 shows, schematically, a second variant of the embodiment of fig. 1.
Fig. 1 shows, schematically, an embodiment of a vehicle cabin climate control system according to the invention.
In the embodiment of fig.1, the vehicle cabin climate control system is arranged into vehicle 1, for example a passenger car, a truck, a van, a plane, a bus, a tram, a train or any other means of public transport, or the like. The vehicle 1 comprises a vehicle cabin 2, in which a driver and optionally one or more passengers can be present. The dashed lines in fig.
1 schematically indicate the boundaries of the vehicle 1 and the vehicle cabin 2.
The vehicle cabin climate control system according to fig. 1 comprises an air treatment device 10. The air treatment device 10 comprises an air cooler 11 and an air heater 12. The air heater 12 is arranged downstream of the air cooler 11, downstream being related to the direction of the air flow through the air treatment device 10. So, the air flows through the air cooler 11 before at least a part of the air flows through the air heater 12.
The air cooler 11 of the air treatment device comprises an air cooler inlet 14 for receiving an air flow. The direction of the air flow through the vehicle cabin climate control system is indicated in fig. 1 by the arrows.
The air flow for example is obtained from outside air that is introduced into the vehicle cabin climate control system from outside of the vehicle. Optionally, the vehicle cabin climate control system comprises an air inlet 50 which is adapted to allow outside air to enter the vehicle climate cabin control system and a flow device 52 to generate an inlet air flow into the vehicle cabin climate control system. The inlet air flow is generated from outside air entering the vehicle cabin climate control system via the air inlet 50. The air inlet 50 is arranged upstream of the air cooler inlet 14, upstream being related to the direction of the air flow through the vehicle cabin climate control system. So, the air flows through the air inlet 50 before it flows through the air cooler inlet 4. The flow device 52 is or comprises for example a fan. In the embodiment of fig. 1, inlet line 51 takes the incoming air for the air inlet 50, via the flow device 52 towards the air cooler inlet 14. In the example of fig. 1, the inlet line 51 ends just upstream of the air cooler inlet 14, where it delivers to inlet air flow to be mixed with a recirculated air flow, but alternatively the inlet line could be directly connected to the air cooler inlet 14. The inlet line 51 is for example made of plastic or metal tubes.
In the embodiment of fig. 1, the air flow that is supplied to the air cooler 11 additionally comprises air that is recirculated from the vehicle cabin 2 of the vehicle 1 in which the vehicle cabin climate control system is arranged. In the embodiment of fig. 1, a recirculation line 40 is provided, which extends between a primary cabin air outlet 43 and the air cooler inlet 14. Air
-11 - is extracted from the vehicle cabin 2 via the primary cabin air outlet 43 e.g. in order to make sure the carbon dioxide level in the vehicle cabin 2 remains within acceptable limits. Flow device 41 is present to ensure the required level of air flow through the recirculation line.
The air cooler 11 is adapted to generate a cooled air flow from the air flow that is received through the air cooler inlet 14. The air cooler 11 for example is or comprises an evaporator.
The air treatment device 10 of the vehicle cabin climate control system according fig. 1 further comprises an air heater 12 which is arranged downstream of the air cooler 11, downstream being related to the direction of the air flow through the air treatment device 10. So, the air flows through the air cooler 11 before at least a part of the air flows through the air heater 12.
The air heater 12 of the air treatment device 10 comprises an air heater inlet 15 which is arranged to receive a first portion of the cooled air flow from the air cooler 11.
The air heater 12 of the air treatment device 10 is adapted to heat this received first portion of the cooled air flow to generate a heated air flow. For example, the air heater 12 of the air treatment device 10 is or comprises a condenser.
The vehicle cabin climate control system according to the embodiment of fig. 1 further comprises a cold air discharge 20. The cold air discharge 20 is arranged to receive a second portion of the cooled air flow that is generated by the air cooler 11 and to discharge this second portion of the cooled air flow to a location outside a vehicle cabin 2, for example outside the vehicle 1. The cold air discharge 20 is arranged to keep the second portion of the cooled air flow outside the air heater 12.
So, the vehicle cabin climate control system is adapted to allow the cooled air flow that is generated by the air cooler 11 of the air treatment device 10 to be split in a first portion that is to be directed to the air heater 12 and a second portion that is not directed to the air heater 12 of the air treatment device 10 but instead is directed to outside the vehicle cabin 2 (of the vehicle 1 in which the vehicle cabin climate control system is arranged), optionally to outside the vehicle 1 in which the vehicle cabin climate control system is arranged. Optionally, a valve is present which in addition to splitting the cooled air flow into a first portion and a second portion, also allows to block the cold air discharge so the entire cooled air flow is directed to the air heater 12 and/or to block the flow path from the air cooler 11 to the air heater 12 so the entire cooled air flow is directed to the cold air discharge 20.
-12- The vehicle cabin climate control system according to the embodiment of fig. 1 further comprises a primary cabin air inlet 30, which is arranged to receive the heated air flow from the air heater 12 and introduce at least a part of the heated airflow into the vehicle cabin 2.
In the embodiment of fig. 1, the air cooler 11 further comprises a first air cooler outlet 16 which is adapted to discharge the cooled air flow from the air cooler 11. In addition, the vehicle cabin climate control system further comprises a first duct 13 which extends between the first air cooler outlet 16 and the air heater inlet 15. Furthermore, the cold air discharge 20 comprises a second duct 21 which is connected to the first duct 13.
So, in this embodiment the cooled airflow is split into a first portion and a second portion at a location between air cooler 11 and the air heater 12, downstream of the air cooler 11 and upstream of the air heater 12.
In the embodiment of fig. 1, the vehicle cabin climate control system further comprises an air exhaust line 42 which is arranged to receive an air flow from the vehicle cabin 2 and discharge at least a portion of this air flow outside the vehicle 1. In the embodiment of fig. 1, the air exhaust line 42 is fed by the recirculation line 40, but alternatively or in addition the exhaust line 42 may be connected to the vehicle cabin 2 directly.
The cold air discharge 20 is arranged to discharge the second portion of the cooled air flow into the air exhaust line 42 at a cooled air injection point 22.
Humidity and carbon dioxide build up in the air of a closed vehicle cabin. As in particular an increased concentration of carbon dioxide is dangerous — it can for example make a driver sleepy — some of the air in the vehicle cabin 2 has to be removed from the vehicle cabin 2 and be replaced with fresh air from outside the vehicle cabin 2. The air exhaust line 42 is provided to allow air to be removed from the vehicle cabin 2. The second portion of cooled air, which does not pass through the air heater 12 of the air treatment system 10, is in this embodiment discharged into the air exhaust line 42.
In the embodiment of fig.1, the cold air discharge 20 comprises a cold air discharge duct 23 which is connected to the air exhaust line 42. In this embodiment, the cold air discharge duct 23 is formed by the second duct 21.
In the embodiment of fig. 1, a peripheral heat exchanger 60 is provided, which has a second side passage 64 which is or forms part of the air exhaust line 42. The second side passage 64 of the peripheral heat exchanger 60 is arranged downstream of the cooled air injection point 22. In this embodiment, the air flow of the air exhaust line 42 passes through the second side passage 64 of the peripheral heat exchanger 60 and the inlet air flow (or inlet line 51) passes through s first side passage 63 of the peripheral heat exchanger 60, such that
-13- heat is exchanged between the inlet air flow in the first side passed 63 and the air flow in the second side passage 64. In an embodiment of fig. 1, the vehicle cabin climate control system further comprises a condensate collector 61 which is arranged to receive condensate that is generated in the air cooler 11. Optionally, the condensate collector is arranged to, alternatively or in addition, receive condensate that is generated in the peripheral heat exchanger 60.
Optionally, the condensate collector 61 is connected to a further vehicle temperature control system and/or further vehicle humidity control system (not shown in fig. 1). For example, the condensate collector is connected to a radiator system of the vehicle in which the vehicle cabin climate control system is arranged.
Fig. 2 shows, schematically, a first variant of the embodiment of fig. 1.
In the variant of fig. 2, the cold air discharge is not branched to the first duct 13 which extends between the air cooler 11 and the air heater 12, but instead the second portion of the cooled air flow is expelled directly from the air cooler 11 via a second air cooler outlet 17.
So, in the variant of fig. 2, the air cooler comprises a first air cooler outlet 16 and a second air cooler outlet 17. The first air cooler outlet 16 is adapted to discharge the first portion of the cooled air flow from the air cooler 11 to the air heater 12. The second air cooler outlet 17 is adapted to discharge the second portion of the cooled air flow from the air cooler
11. The cold air discharge 20 in the variant of fig. 2 is connected to the second air cooler outlet 17. In the variant of fig. 2, a cold air discharge duct 23 is arranged and/or extends between the second air cooler outlet 17 and the air exhaust line 42.
The variant of fig. 2 functions in the same way as the embodiment of fig. 1, with reference numerals in fig. 2 corresponding to the same respective features having the same respective reference numerals as in fig. 1.
Fig. 3 shows, schematically, a second variant of the embodiment of fig. 1.
In the variant of fig. 3, the vehicle cabin climate control system further comprises a valve system 70 to control the flow rate of the first portion of the cooled air flow and/or the flow rate of the second portion of the cooled air flow. The valve system 70 comprises a valve controller 71 to control a setting of the valve system 70.
-14 - In the variant of fig. 3, the vehicle cabin climate control system further comprises a cabin sensor system 73 for measuring a value of a cabin climate parameter in the vehicle cabin 2. The valve controller 71 is adapted to set the valve system 70 at an operating point corresponding to a desired flow rate of the first portion of the cooled air flow and/or the second portion of the cooled air flow based on the measured value of the cabin climate parameter.
In the variant of fig. 3, in addition the vehicle cabin climate control system comprises an outside sensor system 72 for measuring a value of an outside climate parameter outside of the vehicle cabin 2. The valve controller 71 is adapted to set the valve system 70 at an operating point corresponding to a desired flow rate of the first portion of the cooled air flow and/or the second portion of the cooled air flow based on the measured value of the outside climate parameter. The cabin climate parameter is for example temperature, humidity, relative humidity and/or carbon dioxide level.
In the variant of fig. 3, the setting of the valve system is at least based on the measured value of at least one cabin climate parameter and at least one outside climate parameter. The outside climate parameter is for example temperature, humidity, and/or relative humidity.
Optionally, one or more other parameters, e.g. multiple cabin climate parameters and/or multiple outside climate parameters and/or settings provided by a vehicle occupant, may be taken into account as well by the valve controller 71.

Claims (19)

-15- CONCLUSIES-15- CONCLUSIONS 1. Voertuigcabineklimaatcontrolesamenstel, omvattende: - een luchtbehandelingsinrichting, omvattende: - een luchtkoeler omvattende een luchtkoelerinlaat voor het ontvangen van een luchtstroom, waarbij de luchtkoeler is geconfigureerd om een gekoelde luchtstroom te genereren vanuit de luchtstroom ontvangen door de luchtkoelerinlaat, - een luchtverwarmer die stroomafwaarts van de luchtkoeler is opgesteld, waarbij de luchtverwarmer een luchtverwarmerinlaat omvat die is opgesteld om een eerste deel van de gekoelde luchtstroom te ontvangen, en waarbij de luchtverwarmer is geconfigureerd om het eerste deel van de gekoelde luchtstroom te verwarmen om een verwarmde luchtstroom te genereren, - een koudeluchtuitlaat, die is opgesteld om een tweede deel van de gekoelde luchtstroom te ontvangen die is gegenereerd door de luchtkoeler en om het tweede deel van de gekoelde luchtstroom af te voeren naar een locatie buiten een voertuigcabine, waarbij de koudeluchtuitlaat is opgesteld om het tweede deel van de gekoelde luchtstroom buiten de luchtverwarmer te houden, - een primaire cabineluchtinlaat, die is opgesteld om de verwarmde luchtstroom te ontvangen van de luchtverwarmer en om ten minste een deel van de verwarmde luchtstroom te introduceren in de voertuigcabine.A vehicle cabin climate control assembly, comprising: - an air conditioner, comprising: - an air cooler comprising an air cooler inlet for receiving an air stream, the air cooler being configured to generate a cooled air stream from the air stream received by the air cooler inlet, - an air heater installed downstream of the air cooler is arranged, the air heater comprising an air heater inlet arranged to receive a first portion of the cooled air stream, and the air heater being configured to heat the first portion of the cooled air stream to generate a heated air stream, - a cold air outlet, arranged to receive a second portion of the cooled air stream generated by the air cooler and to exhaust the second portion of the cooled air stream to a location outside a vehicle cabin, the cold air outlet being arranged around the second portion of the cooled air stream outside the air heater, a primary cabin air inlet arranged to receive the heated air stream from the air heater and to introduce at least a portion of the heated air stream into the vehicle cabin. 2. Voertuigcabineklimaatcontrolesamenstel volgens conclusie 1, waarbij de luchtkoeler verder een eerste luchtkoeleruitlaat omvat die is geconfigureerd om de gekoelde luchtstroom uit de luchtkoeler af te voeren, en waarbij het systeem verder een eerste leiding omvat die zicht uitstrekt tussen de eerste luchtkoeleruitlaat en de luchtverwarmerinlaat, waarbij de koudeluchtuitlaat een tweede leiding omvat die is verbonden met de eerste leiding.The vehicle cabin climate control system of claim 1, wherein the air cooler further includes a first air cooler outlet configured to exhaust the cooled air stream from the air cooler, and wherein the system further includes a first conduit extending between the first air cooler outlet and the air heater inlet, wherein the cold air outlet comprises a second conduit connected to the first conduit. 3. Voertuigcabineklimaatcontrolesamenstel volgens conclusie 1, waarbij de luchtkoeler verder een eerste luchtkoeleruitlaat omvat die is geconfigureerd om het eerste deel van de gekoelde luchtstroom uit de luchtkoeler af te voeren, en een tweede luchtkoeleruitlaat die is geconfigureerd om het tweede deel van de gekoelde luchtstroom uit de luchtkoeler af te voeren, en waarbij de koudeluchtuitlaat is verbonden met of gevormd is door de tweede luchtkoeleruitlaat.The vehicle cabin climate control system of claim 1, wherein the air cooler further comprises a first air cooler outlet configured to exhaust the first portion of the cooled air stream from the air cooler and a second air cooler outlet configured to exhaust the second portion of the cooled air stream from the air cooler, and wherein the cold air outlet is connected to or formed by the second air cooler outlet. 4. Voertuigcabineklimaatcontrolesamenstel volgens een van de voorgaande conclusies,A vehicle cabin climate control assembly according to any one of the preceding claims, -16 - waarbij het samenstel verder een luchtafvoerleiding omvat die is opgesteld om een luchtstroom te ontvangen van de voertuigcabine en ten minste een deel van de luchtstroom buiten het voertuig af te voeren, en waarbij de koudeluchtuitlaat is opgesteld om het tweede deel van de gekoelde luchtstroom inde luchtafvoerleiding af te voeren op een injectiepunt voor gekoelde lucht.-16 - wherein the assembly further comprises an exhaust air duct arranged to receive an air stream from the vehicle cabin and exhaust at least a portion of the air stream outside the vehicle, and wherein the cold air outlet is arranged to receive the second portion of the cooled air stream in the exhaust air duct to a cooled air injection point. 5. Voertuigcabineklimaatcontrolesamenstel volgens conclusie 4, waarbij een perifere warmtewisselaar is voorzien in of een deel uitmaakt van de luchtafvoerleiding.A vehicle cabin climate control assembly according to claim 4, wherein a peripheral heat exchanger is provided in or forms part of the air exhaust duct. 6. Voertuigcabineklimaatcontrolesamenstel volgens conclusie 5, waarbij de perifere warmtewisselaar stroomafwaarts van het injectiepunt voor gekoelde lucht is opgesteld.A vehicle cabin climate control system according to claim 5, wherein the peripheral heat exchanger is located downstream of the cooled air injection point. 7. Voertuigcabineklimaatcontrolesamenstel volgens een van de voorgaande conclusies, waarbij het samenstel verder een condensaatverzamelaar omvat die is opgesteld om condensaat dat is gegenereerd in de luchtkoeler te ontvangen.A vehicle cabin climate control assembly according to any preceding claim, wherein the assembly further comprises a condensate collector arranged to receive condensate generated in the air cooler. 8. Voertuigcabineklimaatcontrolesamenstel volgens conclusie 8, waarbij de condensaatverzamelaar is verbonden met een verder voertuigtemperatuurcontrolesamenstel en/of verder voertuigvochtigheidscontrolesamenstel.A vehicle cabin climate control assembly according to claim 8, wherein the condensate collector is connected to a further vehicle temperature control assembly and/or further vehicle humidity control assembly. 9. Voertuigcabineklimaatcontrolesamenstel volgens een van de voorgaande conclusies, waarbij het samenstel verder een kleppensamenstel omvat om de stroomsnelheid van het eerste deel van de gekoelde luchtstroom en/of de stroomsnelheid van het tweede deel van de gekoelde luchtstroom te regelen, waarbij het kleppensamenstel een kleppenregelaar omvat om een instelling van het kleppensysteem te regelen.A vehicle cabin climate control assembly according to any one of the preceding claims, wherein the assembly further comprises a valve assembly for controlling the flow rate of the first portion of the cooled air stream and/or the flow rate of the second portion of the cooled air stream, the valve assembly comprising a flap controller to control a valve system setting. 10. Voertuigcabineklimaatcontrolesamenstel volgens conclusie 9, waarbij het samenstel verder een cabinesensorsamenstel omvat voor het meten van een waarde van een cabineklimaatparameter in de voertuigcabine en waarbij de kleppenregelaar is geconfigureerd om het kleppensamenstel op een werkpunt in te stellen dat overeenkomt met een gewenste stroomsnelheid van het eerste deel van de gekoelde luchtstroom en/of het tweede deel van de gekoelde luchtstroom gebaseerd op de gemeten waarde van de cabineklimaatparameter.A vehicle cabin climate control assembly according to claim 9, wherein the assembly further comprises a cabin sensor assembly for measuring a value of a cabin climate parameter in the vehicle cabin and wherein the valve controller is configured to set the valve assembly at an operating point corresponding to a desired flow rate of the first part of the cooled airflow and/or the second part of the cooled airflow based on the measured value of the cabin climate parameter. 11. Voertuigcabineklimaatcontrolesamenstel volgens een van de conclusies 9-10,A vehicle cabin climate control assembly according to any one of claims 9-10, -17 - waarbij het samenstel verder een buitensensorsamenstel omvat voor het meten van een waarde van een buitenklimaatparameter buiten de voertuigcabine en waarbij de kleppenregelaar is geconfigureerd om het kleppensamenstel op een werkpunt in te stellen dat overeenkomt met een gewenste stroomsnelheid van het eerste deel van de gekoelde luchtstroom e/of het tweede deel van de gekoelde luchtstroom gebaseerd op de gemeten waarde van de buitenklimaatparameter.-17 - wherein the assembly further comprises an outside sensor assembly for measuring a value of an outside climate parameter outside the vehicle cabin and wherein the valve controller is configured to set the valve assembly at an operating point corresponding to a desired flow rate of the first portion of the refrigerated air flow and/or the second part of the cooled air flow based on the measured value of the outdoor climate parameter. 12. Werkwijze voor klimaatregeling in een voertuigcabine, waarbij de werkwijze de volgende stappen omvat: -het koelen van een luchtstroom en daardoor het genereren van een gekoelde luchtstroom door een luchtkoeler van een voertuigcabineklimaatcontrolesamenstel, - het verwarmen van een eerste deel van de gekoelde luchtstroom tot een gewenste temperatuur en daardoor het genereren van een verwarmde luchtstroom door een luchtverwarmer van het voertuigcabineklimaatcontrolesamenstel, - het introduceren van ten minste een deel van de verwarmde luchtstroom in een voertuigcabine, - het buiten de luchtverwarmer van het voertuigcabineklimaatcontrolesamenstel houden van een tweede deel van de gekoelde luchtstroom en het afvoeren van het tweede deel van de gekoelde luchtstroom naar buiten het voertuigcabineklimaatcontrolesamenstel.A method of vehicle cabin air conditioning, the method comprising the steps of: cooling an air stream and thereby generating a cooled air stream through an air cooler of a vehicle cabin climate control assembly, heating a first portion of the cooled air stream to a desired temperature and thereby generating a heated airflow through an air heater of the vehicle cabin climate control assembly, - introducing at least part of the heated airflow into a vehicle cabin, - keeping a second part of the cooled airflow outside the air heater of the vehicle cabin climate control assembly airflow and discharging the second portion of the cooled airflow to outside the vehicle cabin climate control assembly. 13. Werkwijze volgens conclusie 12, waarbij de luchtstroom gekoeld is door de luchtkoeler tot het dauwpunt of tot onder het dauwpunt van de lucht in de luchtstroom.The method of claim 12, wherein the air stream is cooled by the air cooler to the dew point or below the dew point of the air in the air stream. 14. Werkwijze volgens een van de conclusies 12-13, waarbij de werkwijze verder de volgende stappen omvat: - het leiden van ten minste een deel van het tweede deel van de gekoelde luchtstroom door een warmtewisselaar, bv. een perifere warmtewisselaar, - dan, het afvoeren van het ten minste een deel van het tweede deel van de gekoelde luchtstroom naar buiten een voertuig waarin het voertuigcabineklimaatcontrolesamenstel is opgesteld.A method according to any one of claims 12-13, wherein the method further comprises the following steps: - passing at least part of the second part of the cooled air stream through a heat exchanger, e.g. a peripheral heat exchanger, - then, discharging at least a portion of the second portion of the cooled air stream to outside a vehicle in which the vehicle cabin climate control assembly is located. 15. Werkwijze volgens een van de conclusies 12-14, waarbij de werkwijze verder de volgende stappen omvat: - het meten van een cabineklimaatparameter, - het aanpassen van de stroomsnelheid van het eerste deel van de gekoelde luchtstroom en/of de stroomsnelheid van het tweede deel van de gekoelde luchtstroom op basis van de gemeten cabineklimaatparameter.15. Method according to one of claims 12-14, wherein the method further comprises the following steps: - measuring a cabin climate parameter, - adjusting the flow rate of the first part of the cooled air stream and/or the flow rate of the second part of the cooled airflow based on the measured cabin climate parameter. -18--18- 16. Werkwijze volgens een van de conclusies 12-15, waarbij de werkwijze verder de volgende stappen omvat: - het meten van een buitenklimaatparameter, - het aanpassen van de stroomsnelheid van het eerste deel van de gekoelde luchtstroom en/of de stroomsnelheid van het tweede deel van de gekoelde luchtstroom op basis van de gemeten buitenklimaatparameter.16. Method as claimed in any of the claims 12-15, wherein the method further comprises the following steps: - measuring an outside climate parameter, - adjusting the flow rate of the first part of the cooled air flow and/or the flow rate of the second part of the cooled airflow based on the measured outdoor climate parameter. 17. Computerprogramma dat, wanneer het uitgevoerd wordt op een computer, ervoor zorgt dat een voertuigcabineklimaatcontrolesamenstel volgens conclusie 1 de volgende stappen uitvoert: - het verkrijgen van meetgegevens van een klimaatparametersensor, - het verkrijgen van informatie over een voertuigcabinetemperatuurinstelpunt, - op basis van de verkregen meetgegevens en het voertuigcabinetemperatuurinstelpunt, het bepalen van de gewenste stroomsnelheid van het eerste deel van de gekoelde luchtstroom van het voertuigcabineklimaatcontrolesamenstel volgens conclusie 1.A computer program which, when executed on a computer, causes a vehicle cabin climate control assembly according to claim 1 to perform the following steps: - obtaining measurement data from a climate parameter sensor, - obtaining information about a vehicle cabin temperature set point, - based on the obtained measurement data and the vehicle cabin temperature set point, determining the desired flow rate of the first portion of the cooled airflow of the vehicle cabin climate control assembly according to claim 1. 18. Computerprogramma volgens conclusie 17 dat, wanneer het uitgevoerd wordt op een computer, er verder voor zorgt dat een voertuigcabineklimaatcontrolesamenstel volgens conclusie 9 de stap uitvoert van het instrueren van de kleppenregelaar om het kleppensysteem in te stellen zodat de gewenste stroomsnelheid van het eerste deel van de gekoelde luchtstroom is verkregen.A computer program according to claim 17 which, when executed on a computer, further causes a vehicle cabin climate control assembly according to claim 9 to perform the step of instructing the valve controller to adjust the valve system so that the desired flow rate of the first part of the cooled airflow is obtained. 19. Voertuig omvattende een voertuigcabineklimaatcontrolesamenstel volgens een van de conclusies 1-11.A vehicle comprising a vehicle cabin climate control assembly according to any one of claims 1-11.
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JPS5799411A (en) * 1980-12-09 1982-06-21 Nippon Soken Inc Air conditioner and ventilator for car
JPS62152918A (en) * 1985-12-26 1987-07-07 Nissan Motor Co Ltd Air conditioning device
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JP2018520939A (en) * 2015-07-24 2018-08-02 ヴァレオ クリマジステーメ ゲーエムベーハー VEHICLE AIR CONDITIONER AND METHOD FOR HEATING INTERNAL SPACE USING THE VEHICLE AIR CONDITIONER
DE202018105060U1 (en) * 2018-09-05 2018-09-17 Mahle International Gmbh air supply

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5799411A (en) * 1980-12-09 1982-06-21 Nippon Soken Inc Air conditioner and ventilator for car
JPS62152918A (en) * 1985-12-26 1987-07-07 Nissan Motor Co Ltd Air conditioning device
EP0913283A1 (en) * 1996-09-25 1999-05-06 Calsonic Corporation Vehicle air conditioner
EP3000636A1 (en) * 2014-09-23 2016-03-30 Delphi Technologies, Inc. Vehicle hvac system with cabin ventilation while parked
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