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WO2009136698A2 - Système cvc de toit pour autobus - Google Patents

Système cvc de toit pour autobus Download PDF

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Publication number
WO2009136698A2
WO2009136698A2 PCT/KR2009/001979 KR2009001979W WO2009136698A2 WO 2009136698 A2 WO2009136698 A2 WO 2009136698A2 KR 2009001979 W KR2009001979 W KR 2009001979W WO 2009136698 A2 WO2009136698 A2 WO 2009136698A2
Authority
WO
WIPO (PCT)
Prior art keywords
heat exchanger
engine
refrigerant
bus
air conditioner
Prior art date
Application number
PCT/KR2009/001979
Other languages
English (en)
Korean (ko)
Other versions
WO2009136698A3 (fr
Inventor
조영두
문정훈
Original Assignee
모딘코리아 유한회사
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 모딘코리아 유한회사 filed Critical 모딘코리아 유한회사
Publication of WO2009136698A2 publication Critical patent/WO2009136698A2/fr
Publication of WO2009136698A3 publication Critical patent/WO2009136698A3/fr

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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
    • B60H1/00642—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
    • B60H1/00357—Air-conditioning arrangements specially adapted for particular vehicles
    • B60H1/00371—Air-conditioning arrangements specially adapted for particular vehicles for vehicles carrying large numbers of passengers, e.g. buses
    • 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
    • B60H1/04—Heating, cooling or ventilating [HVAC] devices the heat being derived from the propulsion plant from cooling liquid of the plant
    • B60H1/06—Heating, cooling or ventilating [HVAC] devices the heat being derived from the propulsion plant from cooling liquid of the plant directly from main radiator
    • 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
    • B60H1/00207—Combined heating, ventilating, or cooling devices characterised by the position of the HVAC devices with respect to the passenger compartment
    • B60H2001/00235—Devices in the roof area of the passenger compartment

Definitions

  • the present invention relates to a ceiling type air conditioner for a bus. More specifically, during heating, the refrigerant is heat-exchanged with the engine coolant, and an engine heat exchanger configured to evaporate is mounted in the engine room to operate as an evaporator and the vehicle interior is heated by a heat pump cycle to operate the indoor heat exchanger as a condenser. Heating is not required, and when cooling, the inside of the vehicle is cooled by the refrigeration cycle, and when heating, the same device is heated by heating the vehicle interior through the reverse circulation method of the heat pump cycle.
  • the present invention relates to a ceiling type air conditioner for a bus that is easy to install by constituting a heat pump cycle using the piping structure to the maximum.
  • an air conditioner for indoor cooling and heating of a bus vehicle is installed on the roof of the bus.
  • the heater and preheater are equipped to perform the auxiliary heating function of the passenger, thereby providing comfort to the passengers by keeping the cool temperature at an appropriate temperature when the cold outside air is introduced into the vehicle interior.
  • a separate heater using a heat source generated from the vehicle engine is configured in a manner that is mounted in the vehicle interior space.
  • the refrigeration cycle configured in the ceiling air conditioning unit of the ceiling type air conditioner for the bus is configured to cool the vehicle interior by heat exchange with the vehicle interior air as the refrigerant undergoes compression, condensation, expansion, and evaporation processes as in the general refrigeration cycle. .
  • FIG. 1 is a conceptual diagram showing the operation flow of a conventional ceiling-type air conditioner for a bus according to the prior art.
  • the air conditioning unit installed on the roof of the bus is equipped with a configuration forming a general refrigeration cycle, and a heater (not shown) and a preheater (not shown) for an auxiliary heating function of external air according to the type of bus. ) Is mounted.
  • each device is equipped with a compressor, which is equipped with a compressor 10, an outdoor heat exchanger 20, a main expansion valve 30 and an indoor heat exchanger 40, respectively, as shown in FIG.
  • the low temperature / low pressure refrigerant (gas state) supplied from the indoor heat exchanger 40 to the compressor 10 through a pipe is supplied to the outdoor heat exchanger 20 by becoming a high temperature / high pressure gas state through the compressor 10.
  • the refrigerant supplied to the outdoor heat exchanger 20 is exchanged with the outdoor air by the outdoor unit fan 23 to be converted into a high temperature / high pressure liquid state. That is, the outdoor heat exchanger 20 performs the function of a condenser.
  • the refrigerant which has become a liquid state through the outdoor heat exchanger 20, is temporarily stored in the reservoir tank 21, and after the moisture is removed through the dryer 22, the liquid having a low temperature / low pressure by the main expansion valve 30. Is converted to a state.
  • the low temperature / low pressure liquid state refrigerant thus converted is supplied to the indoor heat exchanger 40, and heat exchange is performed with the indoor air of the bus through a blower (not shown) of the indoor heat exchanger 40.
  • the made cold indoor air is supplied to the interior of the bus through a duct (not shown). That is, the indoor heat exchanger 40 performs the function of the evaporator.
  • the air conditioner configured as described above is configured such that the compressor 10 is driven by the engine of the vehicle, the compressor 10 is mounted in the engine room of the vehicle, and the outdoor heat exchanger 20 functioning as a condenser and the main expansion valve ( 30) and the indoor heat exchanger 40 functioning as an evaporator are both mounted on the ceiling air conditioning unit of the bus.
  • the indoor heat exchanger 40 is located on both sides of the ceiling air conditioning unit and heat exchanges with the indoor air of the vehicle through the duct as shown in FIG. 1, the indoor heat exchanger 40 and the main expansion valve 30 are each two. Is mounted.
  • the bus-type ceiling type air conditioner for the bus is independently cooled and heated in such a manner that the cooling function is performed through the refrigeration cycle and the heating function is performed through a separate heating device provided in the indoor or ceiling air conditioning unit of the vehicle. Independently performed by the device. Therefore, since separate devices for cooling and heating are mounted respectively, the configuration is complicated and is not easy to assemble, and there is an inconvenience to be managed separately for each configuration, and cooling and heating are performed separately by individual devices. In this respect, the efficiency is relatively low compared to the integrated method.
  • the present invention has been invented to solve such a problem, the heat pump cycle is mounted in the engine room to operate the heat exchanger and the indoor heat exchanger as a condenser when the engine heat exchanger configured to evaporate heat exchange with the engine coolant and evaporate during heating
  • the vehicle's interior no separate heating device is required, and during cooling, the vehicle interior is cooled by the refrigeration cycle and when heated, the same device is managed by heating the vehicle interior through the reverse circulation method of the heat pump cycle.
  • An object of the present invention is to provide a ceiling type air conditioner for a bus that is excellent in energy efficiency and easy to install by constituting a heat pump cycle using the piping structure of a conventional refrigeration cycle to the maximum.
  • the present invention is a bus for cooling a vehicle interior through a refrigeration cycle in which the refrigerant passes through the compressor 10, the outdoor heat exchanger 20, the main expansion valve 30 and the indoor heat exchanger 40 sequentially through a pipe.
  • a ceiling type air conditioner comprising: an engine heat exchanger (60) configured to evaporate heat exchange with an engine 80 cooling water of a vehicle; And a sub-expansion valve 50 connected to the engine heat exchanger 60 so that the refrigerant passes before the engine heat exchanger 60. When the vehicle is heated in the vehicle interior, the refrigerant passes through the pipe.
  • the refrigerant and the indoor air are heat-exchanged in the indoor heat exchanger 40 through a heat pump cycle sequentially passing through the indoor heat exchanger 40, the sub expansion valve 50, and the engine heat exchanger 60. It provides a ceiling air conditioner for a bus, characterized in that.
  • the refrigerant is heat-exchanged with the engine coolant and the engine heat exchanger configured to evaporate is mounted in the engine room to operate as an evaporator and the vehicle interior is heated by a heat pump cycle to operate the indoor heat exchanger as a condenser.
  • No heating device is required, and when cooling, the inside of the vehicle is cooled by the refrigeration cycle, and when heated, the same device is heated by heating the vehicle interior through the reverse circulation method of the heat pump cycle. It is easy to install by constituting the heat pump cycle using the piping structure of the maximum.
  • FIG. 1 is a conceptual diagram showing the operation flow of a conventional ceiling-type air conditioner for a bus according to the prior art
  • FIG. 2 is a conceptual diagram illustrating an operation flow for a cooling function of a ceiling type air conditioner for a bus according to an embodiment of the present invention
  • FIG. 3 is a conceptual diagram illustrating an operation flow for a heating function of a ceiling type air conditioner for a bus according to an embodiment of the present invention.
  • the present invention is a bus for cooling a vehicle interior through a refrigeration cycle in which the refrigerant passes through the compressor 10, the outdoor heat exchanger 20, the main expansion valve 30 and the indoor heat exchanger 40 sequentially through a pipe.
  • a ceiling type air conditioner comprising: an engine heat exchanger (60) configured to evaporate heat exchange with an engine 80 cooling water of a vehicle; And a sub-expansion valve 50 connected to the engine heat exchanger 60 so that the refrigerant passes before the engine heat exchanger 60. When the vehicle is heated in the vehicle interior, the refrigerant passes through the pipe.
  • the refrigerant and the indoor air are heat-exchanged in the indoor heat exchanger 40 through a heat pump cycle sequentially passing through the indoor heat exchanger 40, the sub expansion valve 50, and the engine heat exchanger 60. It provides a ceiling air conditioner for a bus, characterized in that.
  • FIG. 2 is a conceptual diagram illustrating an operation flow for a cooling function of a ceiling air conditioner for a bus according to an embodiment of the present invention
  • Figure 3 is a heating of the ceiling air conditioner for a bus according to an embodiment of the present invention
  • It is a conceptual diagram showing the operation flow for a function.
  • the ceiling type air conditioner for a bus is performed through a cooling pump and a heat pump cycle having a refrigeration cycle and a reverse circulation thereof, as shown in FIGS. 2 and 3.
  • the bus ceiling air conditioner is a compressor 10, an outdoor heat exchanger 20, the main expansion valve 30 and the indoor heat exchange to achieve a general refrigeration cycle as shown in FIG.
  • the unit 40 is mounted, the refrigerant is sequentially passed through these devices through the pipe and the heat exchange with the indoor air of the bus vehicle in the indoor heat exchanger 40 is performed a process of cooling the vehicle interior.
  • the ceiling type air conditioner for a bus includes an engine heat exchanger in which a function of an evaporator is performed so that the refrigerant inside the heat exchanger with the coolant of the engine 80 of the vehicle and evaporates as shown in FIG.
  • the refrigerant passes before the engine heat exchanger 60, and when the vehicle is heated in the vehicle, the refrigerant passes through the compressor ( 10) through the heat pump cycle passing through the indoor heat exchanger 40, the sub-expansion valve 50 and the engine heat exchanger 60 in sequence, the refrigerant and indoor air heat exchange in the indoor heat exchanger (40) Configured to be heated.
  • the bus ceiling air conditioner according to an embodiment of the present invention is equipped with a separate sub-expansion valve 50 and the engine heat exchanger 60 for the heat pump cycle circulation for the heating function, this
  • the pump is configured to reverse-circulate the existing refrigeration cycle through the refrigerant in the engine heat exchanger 60 has a structure in which the heat exchanges with the indoor air and the heating is performed. That is, according to the user's operation, the ceiling type air conditioner for the bus operates as a refrigeration cycle and a heat pump cycle.
  • the outdoor heat exchanger 20 acts as a condenser and the indoor heat exchanger 40 ) Acts as an evaporator and the refrigerant evaporates through the indoor heat exchanger 40 and takes the heat of the indoor air and operates as a process in which the room is cooled.
  • the refrigerant flows from the compressor 10 to the indoor heat exchanger 40 and the indoor heat exchanger 40 acts as a condenser so that the refrigerant condenses from the gas state into the liquid state.
  • the refrigerant passing through the indoor heat exchanger (40) passes through the sub-expansion valve (50), is evaporated by the engine heat exchanger (60), supplied to the compressor (10) again, and circulated in a heat pump cycle.
  • the bus ceiling air conditioner supplies the indoor air heat exchanged by the indoor heat exchanger 40 to the interior of the vehicle through a duct (not shown), thereby cooling or heating the vehicle interior.
  • the indoor heat exchanger 40 acts as an evaporator when cooling and acts as a condenser when heating and is configured to form a refrigeration cycle and a heat pump cycle.
  • the ceiling type air conditioner for a bus can perform a heating function by using the devices forming the existing refrigeration cycle as it is, without having to install a separate heating device. It is a very improved structure in terms of efficiency.
  • the outdoor heat exchanger 20, the main expansion valve 30, and the indoor heat exchanger 40 are mounted to the ceiling air conditioning unit R of the bus vehicle, and the compressor 10 is provided.
  • the engine heat exchanger 60 is preferably mounted in the engine room E of the bus vehicle so that the overall structure is simple and efficient.
  • the reservoir tank 21 and the dryer 22 are mounted in a section before the refrigerant passes through the outdoor heat exchanger 20 and passes through the main expansion valve 30 when cooling.
  • the reservoir tank 41 and the dryer 42 are also mounted in a section before the refrigerant passes through the indoor heat exchanger 40 and passes through the engine heat exchanger 60 during heating.
  • the refrigerant flow is supplied from the compressor (10) to the outdoor heat exchanger (20) when cooling, and from the compressor (10) when heating. Since the pipes connected to the outlet side of the compressor 10 are to be supplied to the heat exchanger 40, the outdoor heat exchanger 20 or the indoor heat exchanger ( A three-way valve 70 may be mounted to selectively open and close the refrigerant passage 40. 2 and 3, the indoor heat exchanger 40 is separately installed on the left and right sides of the outdoor heat exchanger 20, and the main expansion valve 30 is connected to each indoor heat exchanger 40, respectively.
  • the refrigerant passes through the outdoor heat exchanger 20, and then is supplied to the indoor heat exchanger 40 through each main expansion valve 30, and during heating, the refrigerant passes through the outdoor heat exchanger 20. It can be supplied to each indoor heat exchanger 40 through the three-way valve 70 without the.
  • the coolant flow is supplied to the compressor 10 from the indoor heat exchanger 40 when cooling, and to the engine heat exchanger 60 from the indoor heat exchanger 40 via the sub expansion valve 50 when heating. Therefore, as shown in FIGS. 2 and 3, the pipe connected to the outlet side of the indoor heat exchanger 40 has a refrigerant flow path from the outlet of the indoor heat exchanger 40 to the compressor 10 or the sub expansion valve 50.
  • the three-way valve 70 may be mounted to allow the selectively opened and closed.
  • the air conditioner according to the embodiment of the present invention is a structure in which the refrigerant flow path is changed through the three-way valve 70 to form a heat pump cycle by utilizing the pipe structure configured to make a conventional general refrigeration cycle as it is.
  • the structure of the conventional ceiling-type air conditioner for a bus can be easily changed and applied to the structure.
  • the installed ceiling type air conditioner for a bus has the same section as the pipe forming the refrigeration cycle and the pipe forming the heat pump cycle, and the piping structure constituting the heat pump cycle is a refrigeration cycle as shown in FIGS. 2 and 3.
  • the piping structure On the basis of the piping structure to form a three-way valve 70 and the like to form a bypass piping structure. Accordingly, in the pipe connected from the main expansion valve 30 to the indoor heat exchanger 40 side, the refrigerant flowing from the compressor 10 to the indoor heat exchanger 40 side at the time of heating as shown in FIGS. 2 and 3 is expanded in the main expansion.
  • the check valve 31 is preferably mounted so as not to flow back into the valve 30.
  • the piping connected to the compressor 10 side through the three-way valve 70 from the indoor heat exchanger 40 is connected to the compressor 10 side from the engine heat exchanger 60 at the time of heating as shown in FIGS. 2 and 3. It is preferable that the check valve 31 is mounted so that the refrigerant flowing to the side does not flow back to the three-way valve 70 side.
  • the refrigerant since the refrigerant exchanges heat with the high temperature cooling water of the vehicle engine 80 and evaporates, the refrigerant is mounted inside the engine room E of the vehicle to remove the heat source from the cooling water. It is desirable to be able to receive heat easily.
  • the engine room heat exchanger 60 is preferably miniaturized for convenience of assembly and space efficiency since various parts are mounted in the engine room, it is desirable to maintain good performance without failure even in vibration.
  • the two fluids are formed in the form of a plate heat exchanger in which heat is exchanged with each other.
  • a separate flow control valve 90 is mounted on the pipe through which the high temperature coolant supplied from the engine 80 of the vehicle to the engine heat exchanger 60 flows.
  • the flow rate of the coolant may be adjusted in real time so that the heat source of the coolant is not excessively supplied.

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

Abstract

La présente invention concerne un système CVC de toit pour autobus, et en particulier un système CVC de toit pour autobus éliminant le besoin d’un dispositif de chauffage séparé en réchauffant l’intérieur d’un véhicule par le biais d’un cycle de pompe à chaleur, où un échangeur de chaleur du moteur monté dans un compartiment moteur est configuré non seulement pour permettre à un agent frigorigène de subir un échange de chaleur avec de l’eau de refroidissement du moteur, mais également pour faire fonction d’évaporateur servant à évaporer l’agent frigorigène, et en faisant fonctionner un échangeur de chaleur d’intérieur comme condenseur. Le système présente les avantages d’être économique en termes d’entretien et de consommation d’énergie, en refroidissant l’intérieur d’un véhicule par le biais d’un cycle de refroidissement et en réchauffant l’intérieur d’un véhicule par le biais d’un cycle de pompe à chaleur inversé du même système. En outre, l’installation d’un système CVC selon la présente invention peut être facilitée par le fait de configurer le cycle de pompe à chaleur en utilisant dans toute la mesure du possible la structure de canalisations d’un cycle de refroidissement existant.
PCT/KR2009/001979 2008-05-08 2009-04-16 Système cvc de toit pour autobus WO2009136698A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020080042933A KR100954015B1 (ko) 2008-05-08 2008-05-08 버스용 천정형 공기조화장치
KR10-2008-0042933 2008-05-08

Publications (2)

Publication Number Publication Date
WO2009136698A2 true WO2009136698A2 (fr) 2009-11-12
WO2009136698A3 WO2009136698A3 (fr) 2010-01-07

Family

ID=41265129

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2009/001979 WO2009136698A2 (fr) 2008-05-08 2009-04-16 Système cvc de toit pour autobus

Country Status (2)

Country Link
KR (1) KR100954015B1 (fr)
WO (1) WO2009136698A2 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9550407B2 (en) 2015-10-20 2017-01-24 Caterpillar Inc. HVAC integrated roof for operator cabs
CN110539608A (zh) * 2018-05-29 2019-12-06 江苏秋实汽车空调有限公司 一种顶置式汽车空调系统
FR3081779A1 (fr) * 2018-05-31 2019-12-06 Valeo Systemes Thermiques Dispositif de ventilation a tubes pour systeme de ventilation, de chauffage et/ou de climatisation de vehicule de transport en commun

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016214119A1 (de) 2016-08-01 2018-02-01 Volkswagen Aktiengesellschaft Klimatisierungsvorrichtung für ein Kraftfahrzeug und Verfahren zu deren Betrieb

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2526995B2 (ja) * 1988-06-28 1996-08-21 日本電装株式会社 車両用空気調和装置
JPH0725257A (ja) * 1993-07-09 1995-01-27 Mazda Motor Corp 車両の制御装置
JP3331815B2 (ja) * 1995-05-23 2002-10-07 株式会社デンソー 車両用空調装置
DE19641642A1 (de) * 1995-10-20 1997-04-24 Carrier Corp Auf dem Dach montiertes Klimagerät
JPH1053022A (ja) * 1996-01-22 1998-02-24 Denso Corp 車両用空気調和装置
US6718784B1 (en) * 2003-05-05 2004-04-13 Carrier Corporation Evaporator air system for rooftop bus air conditioner
JP2008006894A (ja) * 2006-06-28 2008-01-17 Denso Corp 車両用空調装置

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9550407B2 (en) 2015-10-20 2017-01-24 Caterpillar Inc. HVAC integrated roof for operator cabs
CN110539608A (zh) * 2018-05-29 2019-12-06 江苏秋实汽车空调有限公司 一种顶置式汽车空调系统
FR3081779A1 (fr) * 2018-05-31 2019-12-06 Valeo Systemes Thermiques Dispositif de ventilation a tubes pour systeme de ventilation, de chauffage et/ou de climatisation de vehicule de transport en commun

Also Published As

Publication number Publication date
WO2009136698A3 (fr) 2010-01-07
KR20090117055A (ko) 2009-11-12
KR100954015B1 (ko) 2010-04-20

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