WO2013035907A1 - A vehicle having a temperature control system - Google Patents

A vehicle having a temperature control system Download PDF

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Publication number
WO2013035907A1
WO2013035907A1 PCT/KR2011/006736 KR2011006736W WO2013035907A1 WO 2013035907 A1 WO2013035907 A1 WO 2013035907A1 KR 2011006736 W KR2011006736 W KR 2011006736W WO 2013035907 A1 WO2013035907 A1 WO 2013035907A1
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WO
WIPO (PCT)
Prior art keywords
coolant
heater core
air
circulation line
temperature control
Prior art date
Application number
PCT/KR2011/006736
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English (en)
French (fr)
Inventor
Bo Janeling
Michael Willix
Pekka Ollila
Original Assignee
Volvo Construction Equipment Ab
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 Volvo Construction Equipment Ab filed Critical Volvo Construction Equipment Ab
Priority to DE112011105603.6T priority Critical patent/DE112011105603B4/de
Priority to PCT/KR2011/006736 priority patent/WO2013035907A1/en
Publication of WO2013035907A1 publication Critical patent/WO2013035907A1/en

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    • 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
    • B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
    • B60H1/00814—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation
    • B60H1/00878—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation the components being temperature regulating devices
    • B60H1/00885—Controlling the flow of heating or cooling liquid, e.g. valves or pumps
    • 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
    • B60H1/00492—Heating, cooling or ventilating [HVAC] devices comprising regenerative heating or cooling means, e.g. heat accumulators

Definitions

  • the present invention relates to a vehicle having a temperature control system. More particularly, the present invention relates to a vehicle having a temperature control system, which can be used to supplement energy for cooling and heating by allowing the cooled or heated air to be supplied for a while after the engine stops.
  • the temperature control system in the present invention is applicable not only to general vehicles, but also specifically to construction vehicles, such as an excavator, a loader, a dozer, etc.
  • the ratio of the warming of atmosphere caused by the use of a refrigerant is defined as Global Warming Potential (GWP).
  • GWP Global Warming Potential
  • R134a which is most commonly used as a refrigerant for air-conditioning (AC) systems, has a GWP higher than 1300.
  • An air-conditioning system normally comprises a compressor, a condenser, a receiver-dryer, a expansion device(see ISO13043), and an evaporator.
  • a compressor In order to modify the design of the air-conditioning system, various tests would be required in many different conditions. Thus, it would require lots of efforts to modify the design of the system.
  • a compressor is coated with oil for lubrication when a piston operates to compress a refrigerant.
  • the oil is discharged together with a refrigerant and circulates in the air-conditioning system. Since the oil has the viscosity and specific gravity greater than those of the refrigerant, it does not lead to a phase change when the heat-exchange in the condenser and the evaporator leads to a phase change of a refrigerant. Thus, the efficiency and capability of a heat-exchanger are lowered due to delayed heat absorption and release rates. Further, if the oil, which circulates in the air-conditioning system, is returned to the compressor in a too small amount, the compressor will likely be damaged due to the poor lubrication. If extra oil is added to the system it may lead to poor cooling performance of the system.
  • the hybrid vehicle or idle-stop vehicle is configured to allow the engine to automatically stop when the vehicle stops to wait for the traffic light. If a normal air-conditioning system is adopted in such a vehicle, the operation of the compressor of the air-conditioning system, which is connected to the engine, will also stop and the supply of a heat source for cooling will be suspended or shortened, thereby lowering amenity inside the vehicle.
  • Japanese Unexamined Patent Publication No. 2000-318431 relates to an air-conditioning system for vehicles, and discloses an air-conditioning system having a storage function therein.
  • Figure 1 shows an air-conditioning system for vehicles according to Japanese Unexamined Patent Publication No. 2000-318431.
  • Such an air-conditioning system for vehicles comprises an air-conditioning case (1), in which an inside-air to outside-air transfer door (7) for receiving inside-air and outside-air is disposed in the inlet and vents, the openings of which are controlled by doors (9, 10, 11), are disposed in the outlet; an air blower (5) disposed in the inlet of the air-conditioning case (1); an evaporator (3) and a heater core (6) disposed in the inner path of the air-conditioning case (1); a temperature control door (8) for controlling the opening of the cool aisle and the hot aisle of the air-conditioning case (1); and a cool air accumulator (2), which is disposed to be parallel to the evaporator (3) and accumulates the cool air passed through the evaporator (3).
  • a compressor (not shown in the drawings), which is linked to the engine, operates, and thus a refrigerant cycle comprising the evaporator (3) operates and the inside-air and the outside-air flowed by the inside-air to the outside-air transfer door (7) are heat-exchanged in the evaporator (3) to be discharged to each vent.
  • the cool air which is heat-exchanged with the evaporator (3), is accumulated in the cool air accumulator (2).
  • the engine stops during a certain period of time in case the vehicle stops due to the traffic light or traffic congestion. If a refrigerant cycle in such a hybrid vehicle cannot operate due to the engine stop, the cool air accumulated in the cool air accumulator (2) will be released to cool the inside of the vehicle.
  • the air-conditioning system for vehicles disclosed in Japanese Unexamined Patent Publication No. 2000-318431 should be equipped with a separate heat-exchanger, such as a cool air accumulator (2), which will bring about difficulties in securing a space for installation and increasing the cost for installation.
  • a separate heat-exchanger such as a cool air accumulator (2)
  • the cool air accumulator (2) must have a large capacity.
  • There is also a restriction for design because the cool air accumulator should be installed to be proximate to the evaporator.
  • the present invention was created to solve the aforesaid problems.
  • the example of the present invention relates to minimizing the amount of a refrigerant used and possible discharge of the refrigerant, being easily applicable to the conventional air-conditioning and heating system, and minimizing the space for installation by supplying the cooled or heated air during a certain period of time after the engine stops and not modifying the conventional air-conditioning system for vehicles.
  • the present invention relates to efficiently transmitting the cooled or heated energy to the inside of the cabin and preventing a waste of such energy during its transmission.
  • a vehicle having a temperature control system comprises: a cabin inside which an operator stays; an evaporator constituting the air-conditioning system for cooling the inside of the cabin; a heater core, in which a coolant flows and which heat-exchanges with the peripheral air; a first coolant circulation line, which is connected to the heater core and along which the coolant circulates between the heater core and the engine; a coolant storage, in which the coolant through the heater core is stored; and a second coolant circulation line, which is connected to the heater core and the coolant storage and along which the coolant circulates between the heater core and the coolant storage, wherein the coolant storage is installed inside the frame of the cabin, and the frame is insulated on the outside of the cabin, but not on the inside of the cabin; and wherein when the air-conditioning system operates, the coolant cooled in the heater core by the heat-exchange between the evaporator and the heater core circulates along the second coolant circulation line and stored in the coolant storage; and when the air-conditioning system operates, the
  • the first coolant circulation line and the second coolant circulation line are combined together at the position where the heat core is located.
  • a first valve for permitting or preventing the circulation of the coolant is installed on the line where the first coolant circulation line and the second coolant circulation line are combined.
  • the air-conditioning system operates in the order of the first mode and the second mode. In the first mode, the first valve is closed and is open in the second mode.
  • a circulation pump which allows the coolant to circulate along the second coolant circulation line
  • a second valve which permits or prevents the circulation of the coolant between the heater core and the coolant storage, are installed on the second coolant circulation line.
  • the circulation pump stops and the second valve is closed.
  • the circulation pump operates and the second valve is open.
  • a third valve which permits or prevents the flow of the coolant from the coolant storage to the engine, is installed.
  • the third valve is closed.
  • the temperature control system for vehicles further comprises a compressor operated by the engine and constituting the air-conditioning system, wherein the operation of the air-conditioning system is stopped when the operation of the compressor is stopped.
  • the system also comprises an air-conditioning case accommodating the evaporator and the heater core.
  • the vehicle having a temperature control system comprises: a cabin inside which an operator stays; a heater core, in which a coolant flows and which heat-exchanges with peripheral air; a first coolant circulation line, which is connected to the heater core and along which the coolant heated by the engine circulates between the heater core and the engine; a coolant storage, in which the coolant heated by the engine is stored; and a second coolant circulation line, which is connected to the heater core and the coolant storage and along which the coolant circulates between the heater core and the coolant storage, wherein the coolant storage is installed inside the frame of the cabin, and the frame is insulated on the outside of the cabin, but not on the inside of the cabin; some of the coolant heated by the engine are stored in the coolant storage during the operation of the engine; and the coolant stored in the coolant storage circulates along the second coolant circulation line and is supplied to the heater core during the stop of the engine.
  • the first coolant circulation line and the second coolant circulation line are combined together at the position where the heat core is located.
  • a circulation pump which allows the coolant to circulate along the second coolant circulation line and a second valve for permitting or preventing the circulation of the coolant between the heater core and the coolant storage are installed on the second coolant circulation line.
  • the engine operates in the order of the first mode and the second mode. In the first mode, the circulation pump stops and the second valve is closed. In the second mode, the circulation pump operates and the second valve is open.
  • the coolant storage is connected to the heater core through the second coolant circulation line, and the coolant cooled by the heat-exchange between the evaporator and the heater core is stored in the coolant storage. Since the heated air can be supplied during a certain period of time even after the engine stops, the cooling and heating effect can be improved. Additionally, the required amount of a refrigerant does not increase and the possible discharge of the refrigerant is minimized by applying no modification to the conventional air-conditioning system for vehicles, such as pipe connection.
  • the energy efficiency is improved as a route between the coolant storage and the heater core is shortened since the coolant storage constitutes a framework of the cabin and is installed inside the frame, the outer side of which is insulated, and if there is a leakage of the cooling or heating energy, the leaked energy can be used for cooling or heating.
  • an operator can use the interior space of the frame efficiently without having to arrange a separate space where the coolant storage is installed, and it is not required to change the design of the conventional air-conditioning and heating system.
  • the present invention can be configured by connecting a coolant storage, a circulation pump, and a second valve to the first coolant circulation line constituting the conventional heating system, which is used for cooling an engine, it can be easily applied to the conventional air-conditioning and heating system. Further, the present invention does not separately require a heat-exchanger, which results in minimizing the cost and space for installation.
  • all cold energy by the operation of the air-conditioning system in the first mode which is an initial process of operating the air-conditioning system
  • the cold energy by the operation of the air-conditioning system in the second mode which operates after the first mode, is used for cooling the coolant, thereby rapidly cooling the cabin and storing the cooled coolant in the coolant storage.
  • the temperature control system stores the coolant heated in the coolant storage when the engine operates and the cabin is heated by using the heated coolant stored in the coolant storage when the operation of the engine is stopped.
  • Fig. 1 roughly illustrates the example of the conventional air-conditioning system.
  • Fig. 2 illustrates a vehicle having a temperature control system according to the present invention.
  • Fig. 3 illustrates a coolant storage installed inside a cabin of the vehicle according to the present invention.
  • Fig. 4 illustrates some constitutions of the temperature control system for vehicles according to the present invention.
  • Fig. 5 is a concept drawing of the temperature control system for vehicles according to Example 1 of the present invention.
  • Fig. 6 is a concept drawing of some constitutions of the temperature control system for vehicles according to Example 2 of the present invention.
  • Fig. 7 is a flowchart showing the cooling operation of the temperature control system for vehicles according to the present invention.
  • Fig. 8 is a concept drawing of the temperature control system for vehicles according to Example 3 of the present invention.
  • first coolant circulation line 122 engine
  • heater core 124 first valve
  • Fig. 2 illustrates a vehicle having a temperature control system (20) according to the present invention
  • Fig. 3 illustrates a coolant storage (130) installed inside a cabin (150) of the vehicle according to the present invention.
  • the vehicle having a temperature control system (20) is vehicles operated by an internal combustion engine, namely, not only general cars, but also construction vehicles, such as a truck, a wheel loader, an excavator, etc.
  • the temperature control system is used basically to control the temperature of the inside of the vehicle, such as a cabin of construction vehicles. Also, the temperature control system is used for efficient supply and supplementation of the cooling or heating energy, and for this the coolant storage (130) constituting the temperature control system is installed inside the frame (151) of the cabin (150).
  • the inside of the frame (151) of the cabin (150) is usually empty.
  • the composition that the coolant storage (130) is installed inside the frame (151) of the cabin (150) allows the efficient use of the space, and it is easy to minimize the change of the design and structure and to produce the vehicles since the existing space, where other parts of the temperature control system are installed, does not need to be used for one for installation of the coolant storage (130).
  • the constitution of the present invention can be very suitably applied in the recently developed hybrid vehicles, which are restricted in the space for installation due to various additional parts.
  • the frame (151) is insulated on the outside of the cabin (150), but not on the inside of the cabin (150).
  • the coolant storage (130) is a means to store the cooling or heating energy and the leakage of the energy stored in the coolant storage (130) to the ambient air is prevented by the frame (151), the outer side of which is insulated. Also, in case of leakage of the energy from the coolant storage (130) due to heat conduction, the leaked energy is transmitted to the inside of the cabin (150) through the frame (151), the inner side of which is not insulated, and then can be used for cooling or heating the cabin(150).
  • Fig. 4 illustrates some constitutions of the temperature control system for vehicles according to the present invention.
  • Fig. 5 is a concept drawing of the temperature control system for vehicles according to an example of the present invention.
  • the temperature control system uses an air-conditioning system (110) and a heating system to supplement insufficient cooling or heat source after the engine (122) stops, and is configured to use a normal air-conditioning system (110) and heating system (120) used in the conventional vehicles.
  • the temperature control system according to the present invention does not form a new structure and type of air-conditioning system (110) or heating system (120), but it is configured to be applicable to the general type of air-conditioning system (110) and heating system (120) for vehicles.
  • an air-conditioning system (110) comprises a compressor (111), a condenser (112), a receiver-dryer (113), a thermostatic expansion valve (TXV, 114), and an evaporator (115), and a refrigerant circulates through a pipe (116) by which each component is connected.
  • a refrigerant gas which is compressed at high temperature and with high pressure in a compressor (111) that is linked to an engine (122) of the vehicle, circulates as follows: the refrigerant gas is forcibly cooled and condensed in the condenser (112); water and foreign substances contained in the refrigerant are removed through the receiver-dryer (113); then the purified liquid refrigerant is delivered to the thermostatic expansion valve (114) and enters the evaporator (115) in the state of low temperature and low pressure; the refrigerant in the evaporator (115) takes the heat from the peripheral air, i.e., cools down the peripheral air, and then One cycle is completed as the refrigerant returns to the compressor.
  • the cooled air around the evaporator (115) is supplied to the inside of the vehicle, and thus the vehicle is cooled.
  • a heating system (120) comprises a water jacket (not shown in the drawings), which allows the engine (122) to be normally operated by lowering the high temperature in combustion, which results from being in contact with a combustion chamber (not shown in the drawings) as a coolant path formed in a cylinder block (not shown in the drawings) of the engine (122) and a cylinder header (not shown in the drawings), to an appropriate temperature; a heater core (123) used for heating; and a water pump (not shown in the drawings), which delivers and circulates the coolant to the water jacket and the heater core (123) and is forcibly operated, wherein the coolant circulates through a pipe (a first coolant circulation line (121)), by which each component is connected.
  • a pipe a first coolant circulation line (121)
  • the heater core (123) can be heat-exchanged with peripheral air, and is installed in close proximity with the evaporator (115). It is desirable to install the heater core (123) and the evaporator (115) in the air-conditioning case in order to increase mutual heat-exchange efficiency and smoothly supply the cooled or heated outer air into the cabin.
  • the engine (122) is cooled by moving the high-temperature heat produced in the engine (122) to the outside of the engine (122) to be cooled, and on the other hand the high heat heated by the engine (122) is supplied to the inside of the vehicle to heat the vehicle.
  • the temperature control system according to Example 1 is a system to supplement insufficient heat source for cooling after the engine (122) stops, and uses an air-conditioning system (110) and a heating system.
  • the temperature control system (100) according to Example 1 of the present invention comprises a coolant storage (130) and a second coolant circulation line (131) in addition to the evaporator (115) constituting the aforesaid air-conditioning system (110), the heater core (123) constituting the aforesaid hating system (120), and the first coolant circulation line (121).
  • the coolant storage (130) is connected to the heater core (123) through the second coolant circulation line (131), and stores the coolant through the heater core (123). It is desirable to insulate the outer wall of the coolant storage (130) in order to maintain the temperature of the coolant stored therein.
  • a distance between the evaporator (115) and heater core (123) is shortened since the coolant storage (130) is installed inside the frame of the cabin, which results in improving the energy efficiency as the leakage of the energy during the movement of the coolant between the coolant storage (130) and the heater core (123) is reduced and any leaked energy can be used for cooling the inside of the cabin.
  • the coolant storage (130) is used for heating, which will be described in the following sections.
  • the second coolant circulation line (131) forms a route through which the coolant circulates, it is distinguishable from the first coolant circulation line (121) and is configured to let the coolant circulate between the heater core (123) and the coolant storage (130).
  • the second coolant circulation line (131) can be configured to be combined with the first coolant circulation line (121) at the position where the heater core (123) is formed, as shown in Fig. 3. That is, the second coolant circulation line (131) is partially integrated with the first coolant circulation line (121), which is distinguishable from Example 2.
  • the temperature control system for vehicles (100) comprises a first valve (124), a circulation pump (132), a second valve (133), and a third valve (125), in addition to the aforesaid components.
  • the first valve (124) is installed on the line where the first coolant circulation line (121) and the second coolant circulation line (131) are combined, and prevent the coolant from being discharged from the heater core (123) or from flowing into the heater core (123). That is, if the first valve (124) is closed, the flow of the coolant in the heater core (123) is stopped. In such a case, the entire flow of the coolant may be stopped on the first coolant circulation line (121), whereas the coolant flowed from the engine (122) to the first valve (12) is bypassed prior to the first valve (124), and thus can be configured to flow towards the engine (122).
  • the circulation pump (132) is installed on the second coolant circulation line (131), and forces the coolant to be circulated along the second coolant circulation line (131).
  • the second valve (133) is also installed on the second coolant circulation line (131), and controls flowing the coolant into the coolant storage (130) or discharging the coolant to the coolant storage (130).
  • the third valve (125) is formed on the first coolant circulation line (121) and controls the coolant to flow towards the engine (122).
  • the third valve (125) is a means for preventing the coolant from flowing from the coolant storage (130) towards the engine (122), rather than a means for preventing the coolant from flowing from the heater core (123) towards the engine (122).
  • the first valve (124), the second valve (133), and the third valve (125) are solenoid on-off valves controlled by electricity, and the circulation pump (132) is an electric pump.
  • Fig. 6 is a concept drawing illustrating some constitutions of the temperature control system for vehicles according to Example 2 of the present invention.
  • An air-conditioning system (110) is not merely omitted in Fig. 6.
  • the air-conditioning system (110) comprising the evaporator (115), which is heat-exchanged with the heater core (123), is naturally included in Example 2.
  • the temperature control system (200) according to Example 2 of the present invention is the same as the temperature control system (100) according to the aforesaid Example 1, except for the second coolant circulation line (131).
  • the second coolant circulation line (131) according to Example 1 (100) is formed to be combined with the first coolant circulation line (121) on the portion where the heater core (123) is formed, the first coolant circulation line (121) and the second coolant circulation lien (131) are not combined in the temperature control system (200) according to Example 2. Accordingly, the coolant individually moves along the first circulation line (121) and the second coolant circulation line (131), and can be intersected in the heater core (123).
  • the operator sets a first set temperature (Test1) (S101).
  • the compressor (111) operates by the engine (122) and the air-conditioning system (110) operates. Accordingly, the refrigerant passed through the compressor (111), the condenser (112), the Receiver-Dryer (113) and the thermostatic expansion valve (114) absorbs the peripheral heat to lower the temperature of the inside of the air-conditioning case (140) while passing through the evaporator (115). The air lowered in the air-conditioning case (140) is discharged to the vent and cools the inside of the cabin. In such a case, the first valve (124) and the second valve (133) are closed, and the operation of the circulation pump (132) is stopped (S102).
  • the coolant in the heater core (123) flows towards neither the engine (122) along the first coolant circulation line (121) nor the coolant storage (130) along the second coolant circulation line (131). This step corresponds to a first mode.
  • the cooling energy by the operation of the air-conditioning system (110) is not used for cooling the coolant that exists along the second coolant circulation line (131). Most of such cooling energy is used for lowering the temperature (Tcab) of the inside of the cabin to rapidly cool the inside of the cabin.
  • the first valve (124) and the second valve (133) are open and the circulation pump (132) operates.
  • the air-conditioning system operates after the temperature of the inside of the cabin reaches the first set temperature (Tset1), the coolant cooled in the inside of the heater core (123) by the heat-exchange with the evaporator (115) will flow towards the coolant storage (130) along the second coolant circulation line (131), not towards the engine (122) along the first coolant circulation line (121).
  • Tset1 the first set temperature
  • the coolant cooled in the inside of the heater core (123) by the heat-exchange with the evaporator (115) will flow towards the coolant storage (130) along the second coolant circulation line (131), not towards the engine (122) along the first coolant circulation line (121).
  • This step corresponds to a second mode.
  • the cooling energy by the operation of the air-conditioning system (110) is also used for cooling the coolant that exists along the second coolant circulation line (131), and can gradually cool the temperature of the coolant in the coolant storage (130).
  • the engine (122) may stop, such as the case the engine automatically stops when the hybrid vehicle or idle-stop vehicle stops to wait for the traffic light or other reasons causing short stops of the vehicle (S105).
  • the second set temperature (Tset2) sets the temperature (Tstorage) of the inside of the coolant storage (130), and depends on the first set temperature (Tset1). For example, if the first set temperature (Tset1) is set as 23°C, the second set temperature (Tset2) may be set as 10°C (S106).
  • the air-conditioning system (110) will re-operate for cooling (S108).
  • the inside of the cabin can be cooled by the cooled coolant that exists inside the coolant storage (130), although it is not cooled by the air-conditioning system (110) (S109). That is, the coolant in the coolant storage (130) passes through the heater core (123) along the second coolant circulation line (131) and cools the air around the heater core (123) by the heat-exchange through the heater core (123), and then the cooled air flows into the cabin for cooling (S111).
  • the cooling through the second coolant circulation line (131) is not always performed, but is determined by operator’s choice (S110).
  • Such operation can be performed by the input of information, which allows the first valve (124) or the second valve (133) to be closed and the input of information, which allows the vent of the air-conditioning case (140) to be closed (S112).
  • the temperature control system for vehicles (300) according to Example 3 is a system for supplementing an insufficient heat source for heating after the engine (122) stops, uses the heating system, and is configured as in Example 1, from which the air-conditioning system should be excluded.
  • the temperature control system for vehicles (300) comprises a heating system (120), which comprises the heater core (123) and the first coolant circulation line, the coolant storage (130), the second coolant circulation line, the first valve (124) (which is always open in order to supply a heat source for heating the inside of the cabin), the second valve (133), the third valve (125), and the circulation pump (132).
  • the temperature control system (300) according to Example 3 is characterized in that the coolant heated by the engine (122) is stored in the coolant storage (130).
  • the coolant heated by the engine (122) is stored in the coolant storage during the operation of the engine (122), and the inside of the cabin is heated by the heated coolant stored in the coolant storage (130) during the stop of the engine (122).
  • the temperature control system (300) according to Example 3 operates in two different modes, the first mode and the second mode, as explained below.
  • the coolant heated by the engine (122) will flow through the first coolant circulation line (121) and pass through the heater core (123) to supply heat to the peripheral air and increase the temperature of the inside of the air-conditioning case (140).
  • the air increased in the air-conditioning case (140) is discharged to the vent and heats the inside of the cabin.
  • the first valve (124) and the third valve (125) are open, the second valve (133) is closed, and the operation of the circulation pump (132) is stopped.
  • the coolant in the heater core (123) does not flow towards the coolant storage (130) along the second coolant circulation line (131). This step corresponds to a first mode.
  • the heating energy by the operation of the heating system (120) is not used to heat the coolant that exists along the second coolant circulation line (131). Most of such energy is used to increase the temperature of the inside of the cabin to rapidly heat the inside the cabin.
  • the second valve (133) is open and the circulation pump (132) operates. Accordingly, the coolant circulates through the second coolant circulation line (131).
  • the coolant flowing inside the second coolant circulation line (131) is gradually heated and the coolant in the coolant storage (130) is also gradually heated.
  • the coolant heated by the engine (122) will not be continuously supplied to the heater core (123), and thus the inside of the cabin will not be heated by the heating system (120).
  • the heated coolant that exists inside the coolant storage (130) moves along the second coolant circulation line (131) and passes through the heater core (123) to heat the inside of the cabin by the heat-exchange through the heater core (123).
  • the present invention is configured only by connecting the coolant storage, the circulation pump and the second valve to the conventional heating system, and thus can be easily applied to the conventional air-conditioning and heating system. Since a separate heat-exchanger is not additionally required, the cost and space for installation can be minimized.

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  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Air-Conditioning For Vehicles (AREA)
PCT/KR2011/006736 2011-09-09 2011-09-09 A vehicle having a temperature control system WO2013035907A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE112011105603.6T DE112011105603B4 (de) 2011-09-09 2011-09-09 Fahrzeug mit Temperatursteuerungssystem
PCT/KR2011/006736 WO2013035907A1 (en) 2011-09-09 2011-09-09 A vehicle having a temperature control system

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Application Number Priority Date Filing Date Title
PCT/KR2011/006736 WO2013035907A1 (en) 2011-09-09 2011-09-09 A vehicle having a temperature control system

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WO2013035907A1 true WO2013035907A1 (en) 2013-03-14

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PCT/KR2011/006736 WO2013035907A1 (en) 2011-09-09 2011-09-09 A vehicle having a temperature control system

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US10272744B2 (en) * 2015-09-03 2019-04-30 Ford Global Technologies, Llc Vehicle HVAC system with auxiliary coolant loop for heating and cooling vehicle interior

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