Heating, ventilation and air conditioning (HVAC) system for a vehicle, vehicle comprising an HVAC system, and use of an HVAC system

Abstract

The present disclosure relates to a heating, ventilation and air conditioning (HVAC) system for a vehicle, wherein the system is operable in at least two modes of operation, and the system comprises: a first heat exchanger; a second heat exchanger; and an air discharge port arranged between the first heat exchanger and the second heat exchanger; wherein: in a first mode of operation of the system, the first heat exchanger is used for cooling in the system, the second heat exchanger is used for heating in the system; in a second mode of operation of the system, the first heat exchanger is used for heating in the system, and the second heat exchanger is used for cooling in the system; and the air discharge port is arranged for discharging at least a portion of air conveyed in the system to an outside environment of the vehicle in any one of the at least two modes of operation of the system. The present disclosure also relates to a vehicle comprising the HVAC system and to a use of the HVAC system.

Description

Technical Field

[0001] This disclosure relates to heating, ventilation and air conditioning (HVAC) systems for vehicles, vehicles including HVAC systems, and uses of HVAC systems. Background Technology

[0002] Conventional HVAC systems draw outside air from outside the vehicle or cabin air from inside the vehicle through a heat exchanger and / or a bypass. The conditioned air is then supplied to the cabin. However, in conventional systems, the use of energy contained in the air circulating through the HVAC system is limited, resulting in low thermal efficiency. Therefore, there is room for improvement in HVAC systems used in vehicles. Summary of the Invention

[0003] According to a first aspect, a heating, ventilation, and air conditioning (HVAC) system for a vehicle is provided, wherein the system is operable in at least two operating modes, and the system includes: a first heat exchanger; a second heat exchanger; and an air exhaust port disposed between the first heat exchanger and the second heat exchanger; wherein: in a first operating mode of the system, the first heat exchanger is used for cooling in the system, and the second heat exchanger is used for heating in the system; in a second operating mode of the system, the first heat exchanger is used for heating in the system, and the second heat exchanger is used for cooling in the system; and the air exhaust port is arranged to exhaust at least a portion of the air supplied in the system to the external environment of the vehicle in either of the at least two operating modes of the system.

[0004] An HVAC system may be specifically arranged or configured to deliver or direct air through a first heat exchanger and / or a second heat exchanger. An HVAC system may include at least one damper that can be arranged or controlled to a specific location to restrict and / or allow airflow to facilitate the delivery or direction of air within a desired path within the system.

[0005] The transported air can thermally interact with the first heat exchanger and / or the second heat exchanger. Through this thermal interaction, the first heat exchanger and / or the second heat exchanger can heat or cool the air passing through them and / or can be heated or cooled by the air passing through them, for example, depending on the relative temperature difference between the air passing through them and the temperature of the heat exchanger. That is, the heat exchanger can transfer thermal energy to the system and / or obtain thermal energy from the system.

[0006] Different sections of the first and / or second heat exchangers can be exposed to corresponding supply air at different temperatures. Therefore, different sections of the first and / or second heat exchangers can be used for different purposes. For example, when the first heat exchanger is used for cooling, a first section of the first heat exchanger can be used to dry the air flowing through it, while a second section of the first heat exchanger can be used to extract heat from the air flowing through it (cold or hot). The air supplied through the first heat exchanger can then be selectively discharged to the outside of the system via an air exhaust port. This separation of the heat exchangers and the supply of corresponding air through them improves the thermal efficiency of the system.

[0007] A first heat exchanger and a second heat exchanger can be thermally coupled (i.e., heat energy is transferred therebetween) to corresponding first and second heat sources. The first heat source may be the same as or different from the second heat source. The heat source may be a storage device, such as a coolant storage device and / or a refrigerant storage device. The heat source and the corresponding thermally coupled heat exchanger can form a thermal loop, such as a closed loop. The heat source may be able to supply thermal energy to the corresponding heat exchanger for heating and cooling both, for example, by means of a switchable valve connected between the corresponding heat exchanger and the heat source.

[0008] When a heat exchanger is capable of both heating and cooling, it is sufficient to arrange only one air exhaust port between the first and second heat exchangers to exhaust air to the outside of the system, that is, to transport air through the heat exchangers and thermally interact with them, without altering the airflow sequence in the system.

[0009] In this document, unless otherwise stated, the term “arrangement” may refer to mechanical positioning and / or construction.

[0010] When it is desired to regulate air (i.e., cool or heat), a single heat exchanger can be arranged or used to transfer heat energy to the air being transported. Arranging another heat exchanger, or at least a portion thereof, for other purposes (i.e., heating or cooling separately) allows heat energy to be extracted from the transported air. Once the heat energy has been transferred, the transported air that carried the heat energy to the system can be exhausted to the outside of the system. Therefore, the net heat energy in the system can be reduced, which means that the thermal efficiency of the system is improved, particularly compared to systems with a single heat exchanger used only for regulating air.

[0011] According to one example, the system is arranged to recirculate the cabin air obtained from the passenger compartment side of the vehicle.

[0012] In this document, unless otherwise stated, the term "gain" may refer to "receive," "transmit," etc. Furthermore, the space inside the vehicle may be referred to as the "compartment side," to which conditioned air is supplied. By recirculating the compartment air, the system can regain or recover heat energy from the compartment air, thereby reducing net heat energy. In other words, the system's thermal efficiency is improved.

[0013] According to one example, the air delivered in this system is recirculated cabin air and / or outside air obtained from outside the vehicle.

[0014] As an example, the exhaust port is the system's only exhaust port.

[0015] According to one example, the system includes a first air channel and a second air channel for conveying air in the system.

[0016] According to one example, the system includes a first wall for arranging a first air passage and a second air passage in the system.

[0017] The first wall can be shared by the first air passage and the second air passage. The first wall can also separate the first air passage and the second air passage.

[0018] According to one example, the first air channel includes a first sub-channel and a second sub-channel.

[0019] According to one example, the system includes a second wall for arranging a first sub-channel and a second sub-channel in a first air channel.

[0020] The second wall can be shared by the first sub-channel and the second sub-channel in the first air channel. The second wall can also separate the first sub-channel and the second sub-channel in the first air channel.

[0021] According to one example, depending on the system's operating mode, a first air passage is arranged to deliver recirculated cabin air or outside air into the system, and a second air passage is arranged to deliver recirculated cabin air or outside air into the system.

[0022] In this paper, when a channel is arranged to transport air, the air path can be defined, for example, by positioning at least one damper in a specific position, so that the air is guided and flows through the channel.

[0023] Two air passages allow the same or different air (i.e., recirculated cabin air and / or outside air) to be transported through them, and the respective paths for such transported air enable the transported air to be used differently. For example, air transported via the first air passage can be conditioned and then transported to the cabin side, while air transported via the second air passage can be used to extract heat from the transported air. This can improve the thermal efficiency of the system.

[0024] According to one example, the system includes a first blower and a second blower, a first air passage connected to the first blower and supplying air in the first air passage by means of the first blower, and a second air passage connected to the second blower and supplying air in the second air passage by means of the second blower.

[0025] According to one example, the first blower and the second blower are arranged before the first heat exchanger.

[0026] According to one example, air delivered via a first air passage bypasses a first heat exchanger and / or is delivered via the upper part of the first heat exchanger.

[0027] In this document, the term "upper" may not indicate any orientation, but rather refers to one of the two sections of the first heat exchanger. Furthermore, the term "portion" may refer to a portion of the entire first heat exchanger.

[0028] According to one example, a first sub-channel of the first air passage is arranged to deliver air by bypassing the first heat exchanger, and a second sub-channel of the first air passage is arranged to deliver air via the upper part of the first heat exchanger.

[0029] According to one example, the first air passage is arranged after the first heat exchanger to separate the air delivered via the first air passage according to the system's operating mode.

[0030] In this document, the term "separation" can refer, for example, to directing air into different paths by positioning at least one damper in a specific location. For instance, a portion of the air is directed into a first path, and the remainder of the air is directed into a second path.

[0031] At least one damper may be part of the first air passage.

[0032] At least one damper may be arranged after the first heat exchanger and may be arranged to separate the air delivered via the first air passage according to the operating mode of the system after the first heat exchanger.

[0033] According to one example, after the first heat exchanger, a first air passage is arranged to pass at least a portion of the air delivered via the first air passage to a second heat exchanger and / or to provide at least a portion of the air delivered via the first air passage to a core bypass passage of the system, wherein the core bypass passage is arranged to deliver air to the car side by bypassing the second heat exchanger.

[0034] By supplying air through a core bypass channel, bypassing the second heat exchanger, it is possible to supply air at a first temperature, different from the air at a second temperature obtained by passing through the second heat exchanger. Air at different temperatures can be mixed to achieve the desired temperature. This can be particularly advantageous when different climate zones within the vehicle require different temperatures.

[0035] According to one example, a second air passage is arranged to deliver air toward the air exhaust port.

[0036] According to one example, a second air passage is arranged to deliver air supplied via the second air passage to a first heat exchanger, wherein after passing through the first heat exchanger, the air is discharged to the external environment of the vehicle via an air exhaust port.

[0037] According to one example, the system's core bypass channel is used to adjust the temperature inside the vehicle's compartment based on the temperature requested by the vehicle's compartment side.

[0038] According to one example, the system has at least two operating modes including at least one of the following: a car compartment heating mode; a car compartment reheating mode; a car compartment reheating and heat recovery mode; and / or a car compartment cooling mode.

[0039] According to one example, in the carriage heating mode, the first heat exchanger is used for cooling in the system, and the second heat exchanger is used for heating in the system.

[0040] According to one example, in the car cabin heating mode, the first air passage is selectively arranged to deliver outside air or recirculated car cabin air into the system.

[0041] In this document, unless otherwise stated, when aisles are selectively arranged, they may allow the flow of outside air or recirculated cabin air through them, while simultaneously restricting the flow of other air.

[0042] According to one example, in the carriage heating mode, a first sub-channel of the first air passage is arranged to deliver air by bypassing the first heat exchanger, and a second sub-channel of the first air passage is arranged to deliver air via the upper part of the first heat exchanger.

[0043] According to one example, in the compartment heating mode, the first sub-channel of the first air passage is arranged to deliver air to the second heat exchanger for heating and distribution on the compartment side of the vehicle when air is delivered by bypassing the first heat exchanger.

[0044] According to one example, in the cabin heating mode, the second sub-channel of the first air passage is arranged to: deliver air toward the exhaust port via the upper portion of the first heat exchanger; or deliver air to the second heat exchanger via the upper portion of the first heat exchanger for distribution at the cabin side of the vehicle, wherein air delivery toward the exhaust port is prevented; or deliver air via the upper portion of the first heat exchanger, wherein when air is delivered via the upper portion of the first heat exchanger, the second sub-channel of the first air passage is selectively arranged to: deliver air toward the exhaust port; or deliver air to the second heat exchanger for distribution at the cabin side of the vehicle, wherein air delivery toward the exhaust port is prevented.

[0045] According to one example, in the heated compartment mode, a second air duct is arranged to deliver outside air into the system.

[0046] According to one example, in the cabin heating mode, the second air passage is arranged to deliver air supplied via the second air passage to the first heat exchanger, wherein after passing through the first heat exchanger, the air is discharged to the external environment of the vehicle via an air exhaust port.

[0047] According to one example, in cabin heating mode, the core bypass channel is selectively closed or at least partially opened depending on the temperature requested by the cabin side of the vehicle.

[0048] In this paper, when the channel is selectively closed, air may not be supplied through the channel. When the channel is at least partially open, a portion of the air is supplied through the core bypass channel.

[0049] In the carriage heating mode, the system obtains heat energy from air supplied through the lower part of the first heat exchanger and optionally through the upper part of the first heat exchanger. This improves the system's thermal efficiency.

[0050] According to one example, in the carriage reheating mode, the first heat exchanger is used for cooling in the system, and the second heat exchanger is used for heating in the system.

[0051] According to one example, in the carriage reheating mode, the first air passage is selectively arranged to deliver outside air or recirculated carriage air into the system.

[0052] According to one example, in the carriage reheating mode, the first sub-channel of the first air passage is closed.

[0053] In this document, unless otherwise stated, air may not be supplied through the channel when it is closed.

[0054] According to one example, in the compartment reheating mode, the second sub-channel of the first air passage is arranged to deliver air to the second heat exchanger via the upper part of the first heat exchanger for distribution on the compartment side of the vehicle, wherein air is prevented from being delivered toward the exhaust port.

[0055] According to one example, in the carriage reheating mode, a second air passage is arranged to deliver outside air into the system.

[0056] According to one example, in the cabin reheating mode, the second air passage is arranged to deliver air supplied via the second air passage to the first heat exchanger, wherein after passing through the first heat exchanger, the air is discharged to the external environment of the vehicle via an air exhaust port.

[0057] According to one example, in the compartment reheating mode, the bypass passage is selectively closed or at least partially opened depending on the temperature requested by the compartment side of the vehicle.

[0058] The system in carriage reheating mode first cools the air by passing it through a first heat exchanger that dehumidifies the air, and then heats the cooled air (or "reheats" the cooled air). Therefore, the air delivered to the carriage is dehumidified. Furthermore, the system in carriage reheating mode gains heat energy from the air being transported through the lower part of the first heat exchanger. This improves the system's thermal efficiency.

[0059] According to one example, in the carriage reheating and heat recovery mode, the first heat exchanger is used for cooling in the system, and the second heat exchanger is used for heating in the system.

[0060] According to one example, in the carriage reheating and heat recovery mode, a first air passage is arranged to deliver outside air into the system.

[0061] According to one example, in the carriage reheating and heat recovery mode, the first sub-channel of the first air passage is closed.

[0062] According to one example, in the compartment reheating and heat recovery mode, the second sub-channel of the first air passage is arranged to deliver air to the second heat exchanger via the upper part of the first heat exchanger for distribution on the compartment side of the vehicle, wherein air is prevented from being delivered toward the exhaust port.

[0063] According to one example, in the carriage reheating and heat recovery mode, the second air passage is selectively arranged to deliver recirculated carriage air or outside air into the system.

[0064] According to one example, in the compartment reheating and heat recovery mode, the second air passage is arranged to deliver air transported via the second air passage to the first heat exchanger, wherein after passing through the first heat exchanger, the air is discharged to the external environment of the vehicle via an air exhaust port.

[0065] According to one example, in the compartment reheating and heat recovery mode, the bypass passage is selectively closed or at least partially opened depending on the temperature requested by the compartment side of the vehicle.

[0066] The system in carriage reheating and heat recovery mode dehumidifies the air as previously disclosed in carriage reheating. Furthermore, the system in this mode obtains heat energy from the air conveyed through the lower part of the first heat exchanger. This improves the system's thermal efficiency.

[0067] According to one example, in the compartment cooling mode, the first heat exchanger is used for heating in the system, and the second heat exchanger is used for cooling in the system.

[0068] According to one example, in the compartment cooling mode, the first air passage is selectively arranged to deliver outside air or recirculated compartment air into the system.

[0069] According to one example, in the compartment cooling mode, a first sub-channel of the first air passage is arranged to deliver air by bypassing the first heat exchanger, and a second sub-channel of the first air passage is arranged to deliver air via the upper part of the first heat exchanger.

[0070] According to one example, in the compartment cooling mode, the first sub-channel of the first air passage is arranged to deliver air to the second heat exchanger for cooling and distribution on the compartment side of the vehicle when air is delivered by bypassing the first heat exchanger.

[0071] According to one example, in the compartment cooling mode, a second sub-channel of the first air passage is arranged to deliver air toward the exhaust port via the upper part of the first heat exchanger.

[0072] According to one example, in the compartment cooling mode, a second air duct is arranged to deliver outside air into the system.

[0073] According to one example, in the cabin cooling mode, a second air passage is arranged to transfer air delivered via the second air passage to a first heat exchanger, wherein after passing through the first heat exchanger, the air is discharged to the external environment of the vehicle via an air exhaust port.

[0074] According to one example, in the compartment cooling mode, the bypass passage is selectively closed or at least partially opened depending on the temperature requested by the compartment side of the vehicle.

[0075] In the compartment cooling mode, the system discharges heat from the first heat exchanger into the air that passes through the lower part of the first heat exchanger and optionally through the upper part. The air that has passed through the first heat exchanger is then discharged through the exhaust port. This improves the system's thermal efficiency.

[0076] According to a second aspect, a vehicle is provided that includes a heating, ventilation, and air conditioning (HVAC) system according to any of the examples of the first aspect disclosed herein.

[0077] According to the third aspect, the use of a heating, ventilation, and air conditioning (HVAC) system according to any of the examples of the first aspect disclosed herein for regulating the climate and / or temperature in the passenger compartment of a vehicle is provided.

[0078] The third aspect can be implemented at least partially by a computer, and can be implemented in software or hardware, or both. Furthermore, its use or any method can be performed by computer program instructions running on a device providing data processing capabilities. The data processing device can be a suitable computing device, such as an electronic control module, or it can be a distributed computer system. The data processing device or computer can each include one or more of a processor, memory, data interface, etc. Attached Figure Description

[0079] Examples of this disclosure will now be described with reference to the following figures.

[0080] Figure 1 A typical HVAC system is shown.

[0081] Figure 2 An HVAC system according to an embodiment of the present disclosure is shown.

[0082] Figure 3 An HVAC system for delivering air through a core bypass, according to one embodiment of the present disclosure, is shown.

[0083] Figure 4 An HVAC system in cabin heating mode according to one embodiment of the present disclosure is shown.

[0084] Figure 5 An HVAC system in cabin reheating mode according to one embodiment of the present disclosure is shown.

[0085] Figure 6 An HVAC system in carriage reheating and heat recovery mode according to one embodiment of the present disclosure is shown.

[0086] Figure 7 An HVAC system in a cabin cooling mode according to one embodiment of the present disclosure is shown. Detailed Implementation

[0087] The accompanying drawings are merely schematic representations and are intended to illustrate this disclosure only. In principle, identical or equivalent elements have the same reference numerals.

[0088] Figure 1 The image shows a conventional heating, ventilation, and air conditioning (HVAC) system 100 for a vehicle. System 100 includes a heating section 110 and a distribution section 120, and typically consists of a blower 112 that delivers air from outside the vehicle to the interior of the passenger compartment. Air is delivered using an air inlet flap 111. The air travels through an air passage 113, then through a passenger compartment air filter 114, and then through heat exchangers 115 and 116 that heat or cool the air. The heat exchangers are connected to the AC system or a heating system. Air is then supplied through various air passages that distribute conditioned air into the passenger compartment. Flaps 111 and 121, operated by electric actuators, manipulate the air by mixing hot and cold air streams to provide the correct air volume and desired temperature. Air to the blower can be drawn from recirculated air from the passenger compartment (REC) or from the external environment (OSA).

[0089] The arrows in the accompanying drawings described herein indicate the airflow within the system.

[0090] Figure 2 An HVAC system 200 according to one embodiment of the present disclosure is shown. Figure 2The illustrated system 200 is for a vehicle and can operate in at least two operating modes. The HVAC system 200 includes a first heat exchanger 241, a second heat exchanger 242, and an air exhaust port 271 disposed between the first and second heat exchangers 241 and 242. In a first operating mode of the system 200, the first heat exchanger 241 is used for cooling within the system 200, and the second heat exchanger 242 is used for heating within the system 200. In a second operating mode of the system 200, the first heat exchanger 241 is used for heating within the system 200, and the second heat exchanger 242 is used for cooling within the system 200. The air exhaust port 271 is arranged to exhaust at least a portion of the air supplied in the system 200 to the external environment of the vehicle in either of the at least two operating modes of the system 200.

[0091] For the purpose of explanation, Figure 2 The illustrated HVAC system 200 also includes a first valve 261 disposed between a first heat exchanger 241 and a first reservoir (e.g., a coolant reservoir or a refrigerant reservoir), and a second valve 262 disposed between a second heat exchanger 242 and a second reservoir (e.g., a coolant reservoir or a refrigerant reservoir). The first heat exchanger 241 and the second heat exchanger 242 are respectively connected to the first reservoir and the second reservoir via passages such as pipes for conveying coolant or gas. The first valve 261 and the second valve 262 control the flow of coolant or gas through the passages. The first valve 261 and the second valve 262 are independently controllable. When the first valve 261 and / or the second valve 262 are set to the heating side or the cooling side, coolant or gas for heating or cooling is supplied to the respective first heat exchanger 241 and second heat exchanger 242.

[0092] System 200 also includes a first air passage and a second air passage 251 for conveying air in system 200, and a first wall 223 for arranging (e.g., separating) the first air passage and the second air passage 251 in system 200. The first air passage includes a first sub-passage 231 and a second sub-passage 232, and a second wall 233 for arranging (i.e., separating) the first sub-passage 231 and the second sub-passage 232 in the first air passage. The first sub-passage 231 is arranged such that air conveyed therethrough bypasses a first heat exchanger 241. The first heat exchanger 241 includes an upper portion arranged after the second sub-passage 232, such that air conveyed via the second sub-passage 232 thermally interacts with the upper portion of the first heat exchanger 241. The first heat exchanger 241 includes a lower portion arranged after the second air passage 251, such that air conveyed via the second air passage 251 thermally interacts with the lower portion of the first heat exchanger 241. It should be understood that the terms “upper” and “lower” may not indicate any orientation, but rather refer to two sections or segments of the first heat exchanger 241. It should also be understood that the phrase “A arranged after B” may not indicate any orientation of A and / or B, but rather indicate the order in which the delivered air passes, for example, the delivered air first passes through A and then through B.

[0093] System 200 also includes a core bypass passage 252, which is arranged to deliver air to the car side by bypassing the second heat exchanger 242. Air delivered via the first air passage passes through the core bypass passage or the second heat exchanger 242.

[0094] System 200 also includes a first blower 221 and a second blower 222. A first air passage is connected to the first blower 221 and supplies air to the first air passage using the first blower 221. A second air passage 251 is connected to the second blower 222 and supplies air to the second air passage 251 using the second blower 222. The first blower 221 and the second blower 222 are arranged before the first heat exchanger 241.

[0095] System 200 also includes a first damper 211, a second damper 212, a third damper 281, a fourth damper 282, and a fifth damper 283. The first damper 211 and the second damper 212 are independently controllable and can be selectively arranged to deliver outside air from outside the vehicle or recirculated cabin air from the cabin through corresponding first and second air passages 251. This can simultaneously restrict or block another air path in system 200 that is different from the desired air delivery. For example, when the first damper 211 is arranged to deliver outside air through the first air passage, the arranged first damper 211 can restrict recirculated cabin air from entering the first air passage. The third damper 281, the fourth damper 282, and the fifth damper 283 are controllable and can be arranged in specific locations. Any combination of dampers herein can be physically connected to each other and / or jointly controllable. Additionally or alternatively, any one of the dampers herein can be individually controllable.

[0096] System 200 can be divided into a heating section 210 and a distribution section 290.

[0097] It should be understood that any of the first to fifth air dampers 211, 212, 281, 282 and 283 can be implemented in different forms to achieve this guidance and / or restriction of the air passage.

[0098] According to the operating mode of system 200, the first to fifth air doors 283 are arranged in specific positions such that the first air passage is arranged to deliver recirculated car air or outside air in system 200, and the second air passage 251 is arranged to deliver recirculated car air or outside air in system 200.

[0099] System 200 also includes a compartment module 292, which is arranged to deliver conditioned air (i.e., air exchanged with the second heat exchanger 242 or supply air bypassing the second heat exchanger 242) to the compartment side of the vehicle. System 200 also includes a plurality of distribution dampers 291, which are arranged to selectively guide air into the compartment via the compartment module 292.

[0100] As will become apparent from the following disclosure, an HVAC system according to any embodiment described herein can utilize the thermal energy in supplied outside air and / or recirculated cabin air in the heat and / or refrigerant circuit by passing air through a first heat exchanger 241 in the HVAC system. The air supplied through the first heat exchanger 241 is then supplied to the cabin or discharged to the outside of the vehicle via an exhaust port 271. The exhaust port 271 may be the only exhaust port 271 of the system, as a single exhaust port 271 may be sufficient or necessary, since the first heat exchanger 241 and the second heat exchanger 242 can be switched by corresponding first valve 261 and second valve 262 on the coolant / refrigerant circuit. The HVAC system particularly achieves an increase in thermal efficiency throughout the entire thermal system circuit (i.e., the circuit including the HVAC system), because the already heated air in the cabin can be reused on the thermal heat pump side, or thermal energy in the ambient air can also be transferred to the thermal circuit.

[0101] The following describes an HVAC system according to any embodiment disclosed herein for supporting different temperature zones (e.g., driver's side, passenger side, second row, and / or third row) in a vehicle. To support this, the HVAC system may require providing separate cool and warm air to the cabin module 292, wherein the two airflows are mixed according to the requested temperature in the different zones. This can be achieved by bypassing the second heat exchanger 242.

[0102] Notice, Figures 3 to 7 The HVAC system shown includes... Figure 2 The same components as those in the HVAC system. Therefore, for simplicity, Figure 2 The reference numerals in the figures are appended, and Figures 3 to 7 Reference numerals are omitted in the accompanying drawings. Any different or additional parts are provided with their own reference numerals.

[0103] exist Figure 3 In the illustrated embodiment, a first damper 211 is arranged to deliver outside air supplied through a first air passage, and third dampers 281, fourth dampers 282, and fifth dampers 283 are arranged to deliver air supplied via a first blower 221 through a second sub-passage 232 and through a first heat exchanger 241, and through a core bypass passage 252. As a result, outside air is supplied through the first blower 221, then through the second sub-passage 232 in the first air passage, then through the upper part of the heat exchanger, and then through the core bypass passage 252 of the system 200. The illustrated system 200 also includes an optional damper 310 for controlling the airflow rate through the core bypass passage 252. This allows for further separation based on the number of temperature zones in the compartment.

[0104] This temperature control of different areas in a vehicle can be achieved by combining any operating mode of the HVAC according to any embodiment disclosed herein.

[0105] It should be understood that the above combination Figure 3 The embodiments shown are specific embodiments, and any combination of the following embodiments can be implemented to achieve the above-described technical effects.

[0106] In one embodiment, the system is configured to recirculate cabin air obtained from the passenger compartment side of the vehicle.

[0107] In one embodiment, the air delivered in the system is recirculated cabin air and / or outside air obtained from outside the vehicle.

[0108] In one embodiment, the exhaust port is the system's only exhaust port.

[0109] In one embodiment, the system includes a first air passage and a second air passage for conveying air into the system.

[0110] In one embodiment, the system includes a first wall for arranging a first air passage and a second air passage in the system; and / or In one embodiment, the first air passage includes a first sub-passage and a second sub-passage.

[0111] In one embodiment, the system includes a second wall for arranging the first sub-channel and the second sub-channel in the first air passage.

[0112] In one embodiment, depending on the system's operating mode, a first air passage is arranged to deliver recirculated cabin air or outside air into the system, and a second air passage is arranged to deliver recirculated cabin air or outside air into the system.

[0113] In one embodiment, the system includes a first blower and a second blower, a first air passage connected to the first blower and supplying air in the first air passage by means of the first blower, and a second air passage connected to the second blower and supplying air in the second air passage by means of the second blower.

[0114] In one embodiment, the first blower and the second blower are arranged before the first heat exchanger.

[0115] In one embodiment, air delivered via a first air passage bypasses a first heat exchanger and / or is delivered via the upper part of the first heat exchanger.

[0116] In one embodiment, a first sub-channel of the first air passage is arranged to deliver air by bypassing the first heat exchanger, and a second sub-channel of the first air passage is arranged to deliver air via the upper part of the first heat exchanger.

[0117] In one embodiment, a first air passage is arranged after a first heat exchanger to separate air delivered via the first air passage according to the system's operating mode, wherein, after the first heat exchanger, the first air passage is arranged to transfer at least a portion of the air delivered via the first air passage to a second heat exchanger and / or to provide at least a portion of the air delivered via the first air passage to a core bypass passage of the system, wherein the core bypass passage is arranged to deliver air to the car body side by bypassing the second heat exchanger.

[0118] In one embodiment, a second air passage is arranged to deliver air toward an air exhaust port.

[0119] In one embodiment, a second air passage is arranged to deliver air supplied via the second air passage to a first heat exchanger, wherein after passing through the first heat exchanger, the air is discharged to the external environment of the vehicle via an air exhaust port.

[0120] In one embodiment, the system’s core bypass channel is used to adjust the temperature inside the vehicle’s compartment based on a temperature requested by the vehicle’s compartment side.

[0121] The following describes an HVAC system in an operating mode according to any one of the embodiments.

[0122] The HVAC system 200 may be considered in certain modes, depending on whether it is used in hot, cold, or humid environmental conditions. Operating modes may include at least one of the following: a compartment heating mode (e.g., when at a cold ambient temperature); a compartment reheating mode (e.g., when dehumidifying ambient air at a moderate temperature and / or recirculating compartment air); a compartment heat recovery mode (e.g., when reusing energy from the compartment); and a compartment cooling mode (e.g., when at a warm ambient temperature). These operating modes may be further modified based on external and / or vehicle compartment conditions.

[0123] Depending on the mode, the first to fifth dampers 283 in the HVAC system 200 are arranged or moved to a position to guide air in a desired path within the HVAC system 200. The first and second blowers 221 and 222 are capable of altering the airflow rate of the delivered air in the HVAC system 200, and the first and second heat exchangers 241 and 242 are controlled by a connected heating or cooling system 200. The arranged first to fifth dampers 283 can simultaneously completely or partially block or restrict the airflow path.

[0124] Operating Mode 1: Carriage Heating Mode In cabin heating mode, the HVAC system 200 can... Figure 4 The arrangement is shown. First damper 211 and second damper 212 are arranged to deliver outside air through first air passage and second air passage 251, respectively. First blower 221 and second blower 222 operate and guide air through the corresponding first air passage 251 and second air passage 251. Third and fifth dampers 281, 282, and 283 are arranged to guide air delivered through first sub-passage 231 to second heat exchanger 242. The guided air is heated by second heat exchanger 242 and distributed into the compartment via compartment module 292. Third damper 281 and fourth damper 282 are arranged to guide air delivered through second sub-passage 232 and through the upper part of first heat exchanger 241 to exhaust port 271. This arrangement of dampers maximizes the effective surface area of ​​first heat exchanger 241. Air delivered through second air passage 251 via second blower 222 is guided through the lower part of first heat exchanger 241, through which heat energy is transferred from the air to the thermal system. The air that has passed through the first heat exchanger 241 is then discharged, i.e., thrown out, via the exhaust port 271. The first valve 261 and the second valve 262 are respectively located on the cooling side and the heating side. When, for example, different temperatures are required for different temperature zones within the carriage, the core bypass passage 252 can be closed, i.e., air is not guided through it, or at least partially opened, i.e., at least some air is guided through it.

[0125] It should be understood that the above combination Figure 4 The embodiments shown are specific embodiments, and any combination of the following embodiments can be implemented to achieve the above-described technical effects.

[0126] In one embodiment, in the carriage heating mode, a first heat exchanger is used for cooling in the system, and a second heat exchanger is used for heating in the system.

[0127] In one embodiment, in the carriage heating mode, a first air passage is selectively arranged to deliver outside air or recirculated carriage air into the system.

[0128] In one embodiment, in a heated carriage mode, a first sub-channel of the first air passage is arranged to deliver air by bypassing the first heat exchanger, and a second sub-channel of the first air passage is arranged to deliver air via the upper part of the first heat exchanger.

[0129] In one embodiment, in the cabin heating mode, a first sub-channel of the first air passage is arranged to deliver air to a second heat exchanger for heating and distribution on the cabin side of the vehicle when air is delivered by bypassing the first heat exchanger.

[0130] In one embodiment, in the cabin heating mode, a second sub-channel of the first air passage is arranged to: deliver air toward the exhaust port via the upper portion of the first heat exchanger; or deliver air to the second heat exchanger via the upper portion of the first heat exchanger for distribution at the cabin side of the vehicle, wherein air is prevented from being delivered toward the exhaust port; or deliver air via the upper portion of the first heat exchanger, wherein when air is delivered via the upper portion of the first heat exchanger, the second sub-channel of the first air passage is selectively arranged to: deliver air toward the exhaust port; or deliver air to the second heat exchanger for distribution at the cabin side of the vehicle, wherein air is prevented from being delivered toward the exhaust port.

[0131] In one embodiment, in the heated compartment mode, a second air duct is arranged to deliver outside air into the system.

[0132] In one embodiment, in a cabin heating mode, a second air passage is arranged to deliver air supplied via the second air passage to a first heat exchanger, wherein after passing through the first heat exchanger, the air is discharged to the external environment of the vehicle via an air exhaust port.

[0133] In one embodiment, in cabin heating mode, the core bypass passage is selectively closed or at least partially opened depending on the temperature requested by the cabin side of the vehicle.

[0134] Operating Mode 2: Carriage Reheating Mode In the carriage reheating mode, a system 200 according to an embodiment of this disclosure is as follows: Figure 5The arrangement is shown. First and second dampers 211 and 212 are arranged to deliver outside air through corresponding first and second air passages 251. A third damper 281 is arranged to restrict the further flow of air delivered through the first sub-passage 231 of the first air passage into the carriage. Third, fourth, and fifth dampers 281, 282, and 283 are arranged to guide air delivered through the second sub-passage 232 of the first air passage and through the upper part of the first heat exchanger 241 to the second heat exchanger 242. Through this path, the air is dried by condensation on the surface of the first heat exchanger 241, and the conditioned air through the first heat exchanger 241 is then heated via the second heat exchanger 242. The heated air is distributed into the carriage via carriage module 292. Air delivered through the second air passage 251 via the second blower 222 is guided through the lower part of the first heat exchanger 241, through which heat energy is transferred from the air to the thermal system. The air that has passed through the first heat exchanger 241 is then discharged via the exhaust port 271, i.e., thrown out. It should be noted that the fifth damper 283 is closed toward the exhaust port 271, i.e., restricting airflow into the exhaust port 271 to prevent any air from bypassing the second sub-channel 232. The first valve 261 and the second valve 262 are respectively located on the cooling side and the heating side. When, for example, different temperatures are required for different temperature zones within the carriage, the core bypass channel 252 can be closed, i.e., air is not guided through it, or at least partially opened, i.e., at least some air is guided through it.

[0135] It should be understood that the above combination Figure 5 The embodiments shown are specific embodiments, and any combination of the following embodiments can be implemented to achieve the above-described technical effects.

[0136] In one embodiment, in the carriage reheating mode, a first heat exchanger is used for cooling in the system, and a second heat exchanger is used for heating in the system.

[0137] In one embodiment, in the carriage reheating mode, a first air passage is selectively arranged to deliver outside air or recirculated carriage air into the system.

[0138] In one embodiment, in the carriage reheating mode, the first sub-channel of the first air passage is closed.

[0139] In one embodiment, in a cabin reheating mode, the second sub-channel of the first air passage is arranged to deliver air to the second heat exchanger via the upper part of the first heat exchanger for distribution on the cabin side of the vehicle, wherein air is prevented from being delivered toward the exhaust port.

[0140] In one embodiment, in the carriage reheating mode, a second air passage is arranged to deliver outside air into the system.

[0141] In one embodiment, in the cabin reheating mode, a second air passage is arranged to deliver air supplied via the second air passage to a first heat exchanger, wherein after passing through the first heat exchanger, the air is discharged to the external environment of the vehicle via an air exhaust port.

[0142] In one embodiment, in the compartment reheating mode, the bypass passage is selectively closed or at least partially opened depending on the temperature requested by the compartment side of the vehicle.

[0143] Operating Mode 3: Carriage Reheating and Heat Recovery Mode In the carriage reheating and heat recovery mode, a system 200 according to an embodiment of the present disclosure is as follows: Figure 6 The arrangement is shown. A first damper 211 is arranged to deliver outside air through a first air passage. A third damper 281 and a fourth damper 282 are arranged to guide air, guided by a first blower 221 through a second sub-passage 232 and through a first heat exchanger 241, to a second heat exchanger 242. The third damper 281 is arranged to restrict further flow of air delivered through the first sub-passage 231 into the carriage. Third, fourth, and fifth dampers 281, 282, and 283 are arranged to guide air delivered through the second sub-passage 232 of the first air passage and through the upper part of the first heat exchanger 241 to the second heat exchanger 242. Along this path, the air is dried by condensation on the surface of the first heat exchanger 241, and the conditioned air from the first heat exchanger 241 is then heated via the second heat exchanger 242. The heated air is distributed into the carriage via carriage module 292. The second damper 212 is arranged to deliver recirculated car body air through the second air passage 251 via the second blower 222. The air delivered through the second air passage 251 via the second blower 222 is guided through the first heat exchanger 241, where heat is transferred from the air to the heating system. The air delivered through the first heat exchanger 241 is then discharged via the exhaust port 271, i.e., thrown out. It should be noted that the fifth damper 283 is closed toward the exhaust port 271, i.e., restricting airflow into the exhaust port 271 to prevent any air from bypassing the second sub-passage 232. The first valve 261 and the second valve 262 are respectively located on the cooling side and the heating side. When, for example, different temperatures are required in different temperature zones within the car body, the core bypass passage 252 can be closed, i.e., air is not guided through it, or at least partially opened, i.e., at least some air is guided through it.

[0144] It should be understood that the above combination Figure 6The embodiments shown are specific embodiments, and any combination of the following embodiments can be implemented to achieve the above-described technical effects.

[0145] In one embodiment, in the carriage reheating and heat recovery mode, a first heat exchanger is used for cooling in the system, and a second heat exchanger is used for heating in the system.

[0146] In one embodiment, in the carriage reheating and heat recovery mode, a first air passage is arranged to deliver outside air into the system.

[0147] In one embodiment, during the carriage reheating and heat recovery mode, the first sub-channel of the first air passage is closed.

[0148] In one embodiment, in the compartment reheating and heat recovery mode, a second sub-channel of the first air passage is arranged to deliver air via the upper part of the first heat exchanger to the second heat exchanger for distribution on the compartment side of the vehicle, wherein air is prevented from being delivered toward the exhaust port.

[0149] In one embodiment, in the carriage reheating and heat recovery mode, a second air passage is selectively arranged to deliver recirculated carriage air or outside air into the system.

[0150] In one embodiment, in the compartment reheating and heat recovery mode, a second air passage is arranged to deliver air supplied via the second air passage to a first heat exchanger, wherein after passing through the first heat exchanger, the air is discharged to the external environment of the vehicle via an air exhaust port.

[0151] In one embodiment, in the compartment reheating and heat recovery mode, the bypass passage is selectively closed or at least partially opened depending on the temperature requested by the compartment side of the vehicle.

[0152] Operating Mode 4: Carriage Cooling Mode In the compartment cooling mode, the system 200 according to an embodiment of the present disclosure is as follows: Figure 7The arrangement is shown. First damper 211 and second damper 212 are arranged to deliver outside air through first air passage and second air passage 251, respectively. Third damper 281 and fifth damper 283 are arranged to guide air delivered via first blower 221 through first sub-passage 231 of the first air passage to second heat exchanger 242. The air passing through second heat exchanger 242 is cooled, and the cooled air is distributed into the carriage via carriage module 292. Third damper 281 and fourth damper 282 are arranged to guide air delivered via first blower 221 through second sub-passage 232 of the first air passage and through the upper part of first heat exchanger 241 to exhaust port 271. This arrangement of the dampers maximizes the effective surface area of ​​first heat exchanger 241. Air delivered via second blower 222 through second air passage 251 is guided through the lower part of first heat exchanger 241, through which heat energy is transferred from the thermal system to the air. The air that has passed through the first heat exchanger 241 is then discharged, i.e., thrown out, via the exhaust port 271. The first valve 261 and the second valve 262 are respectively provided to the heating side and the cooling side. When, for example, different temperatures are required in different temperature zones within the carriage, the core bypass passage 252 can be closed, i.e., air is not guided through it, or at least partially opened, i.e., at least some air is guided through it.

[0153] It should be understood that the above combination Figure 7 The embodiments shown are specific embodiments, and any combination of the following embodiments can be implemented to achieve the above-described technical effects.

[0154] In one embodiment, in the compartment cooling mode, a first heat exchanger is used for heating in the system, and a second heat exchanger is used for cooling in the system.

[0155] In one embodiment, in the compartment cooling mode, a first air passage is selectively arranged to deliver outside air or recirculated compartment air into the system.

[0156] In one embodiment, in a compartment cooling mode, a first sub-channel of the first air passage is arranged to deliver air by bypassing the first heat exchanger, and a second sub-channel of the first air passage is arranged to deliver air via the upper part of the first heat exchanger.

[0157] In one embodiment, in a compartment cooling mode, a first sub-channel of the first air passage is arranged to deliver air to a second heat exchanger for cooling and distribution on the compartment side of the vehicle when air is delivered by bypassing the first heat exchanger.

[0158] In one embodiment, in the compartment cooling mode, a second sub-channel of the first air passage is arranged to deliver air toward the exhaust port via the upper part of the first heat exchanger.

[0159] In one embodiment, in the compartment cooling mode, a second air duct is arranged to deliver outside air into the system.

[0160] In one embodiment, in a cabin cooling mode, a second air passage is arranged to deliver air supplied via the second air passage to a first heat exchanger, wherein after passing through the first heat exchanger, the air is discharged to the external environment of the vehicle via an air exhaust port.

[0161] In one embodiment, in cabin cooling mode, the bypass passage is selectively closed or at least partially opened depending on the temperature requested by the cabin side of the vehicle.

[0162] This disclosure also relates to a vehicle that includes a heating, ventilation, and air conditioning (HVAC) system according to any embodiment disclosed herein.

[0163] This disclosure further relates to the use of a heating, ventilation, and air conditioning (HVAC) system according to any embodiment disclosed herein for regulating the climate and / or temperature in the passenger compartment of a vehicle.

[0164] The use of an HVAC system can be at least partially implemented by a computer, and can be implemented in software or hardware, or both. Furthermore, its use or any method can be performed by computer program instructions running on a device providing data processing capabilities. The data processing device can be a suitable computing device, such as an electronic control module, or it can be a distributed computer system. The data processing device or computer can each include one or more of a processor, memory, data interface, etc.

[0165] As used herein, the phrase “at least one” in relation to a list of one or more entities should be understood to mean at least one entity selected from any one or more entities in the entity list, but not necessarily at least one of each entity specifically listed in the entity list, and does not exclude any combination of entities in the entity list. This definition also allows for the optional presence of entities other than those specifically identified in the entity list referred to by the phrase “at least one,” whether related to or unrelated to those specifically identified entities. Thus, as a non-limiting example, “at least one of A and B” (or equivalently, “at least one of A or B”, or equivalently, “at least one of A and / or B”) could in one example mean at least one (optionally including more than one) A, without B (and optionally including entities other than B); in another example, at least one (optionally including more than one) B, without A (and optionally including entities other than A); and in yet another example, at least one (optionally including more than one) A and at least one (optionally including more than one) B (and optionally including other entities). In other words, the phrases “at least one,” “one or more,” and “and / or” are open-ended expressions that are both connected and separate in operation. For example, each of the expressions “at least one of A, B, and C,” “at least one of A, B, or C,” “one or more of A, B, and C,” “one or more of A, B, or C,” and “A, B, and / or C” can mean a single A, a single B, a single C, A and B together, A and C together, B and C together, A, B, and C together, and optionally, any of the above combined with at least one other entity.

[0166] By studying the accompanying drawings, the disclosure, and the appended claims, those skilled in the art can understand and implement other variations of the disclosed examples in practice with respect to the claimed disclosure. In the claims, the word "comprising" does not exclude other elements or steps, and the indefinite articles "a" or "an" do not exclude multiple. A single processor or other unit can perform the function of several items or steps recited in the claims. The fact that certain measures are recited in mutually different dependent claims does not mean that a combination of these measures cannot be used advantageously. Computer programs can be stored / distributed on suitable media, such as optical storage media or solid-state media provided with or as part of other hardware, but can also be distributed in other forms, such as via the Internet or other wired or wireless telecommunications systems. Any reference numerals in the claims should not be construed as limiting the scope of the claims.

[0167] List of reference numerals 100 Conventional HVAC Systems 110 Hot Part 111 Air Inlet Damper 112 Blower 113 Air passage 114 Carriage Air Filter 115 Evaporator 116 Heat Exchanger 120 Distribution Department 121 Air distribution damper 200 HVAC system 210 Hot Part 211 First Air Door 212 Second air door 221 First Blower 222 Second Blower 223 First Wall 231 First Sub-channel 232 Second Sub-channel 233 Second Wall 241 First heat exchanger 242 Second heat exchanger 251 Second Air Channel 252 Core Bypass Channel 261 First Valve 262 Second Valve 271 Emission Port 281 Third air door 282 Fourth air door 283 Fifth Wind Gate 220 Distribution Department More than 291 distribution dampers 292 Carriage Module

Claims

1. A heating, ventilation, and air conditioning (HVAC) system for a vehicle, wherein the system is capable of operating in at least two operating modes, and the system comprises: - First heat exchanger; - Second heat exchanger; as well as - An air exhaust port is arranged between the first heat exchanger and the second heat exchanger; in: - In the first operating mode of the system, the first heat exchanger is used for cooling the system, and the second heat exchanger is used for heating the system; - In the second operating mode of the system, the first heat exchanger is used for heating the system, and the second heat exchanger is used for cooling the system; and - The air exhaust port is arranged to exhaust at least a portion of the air supplied in the system to the external environment of the vehicle in any of the at least two operating modes of the system.

2. The system according to claim 1, wherein: - The system is configured to recirculate the passenger compartment air obtained from the passenger compartment side of the vehicle; and / or - The air supplied in the system is recirculated cabin air and / or outside air obtained from outside the vehicle; and / or - The emission port is the only emission port of the system; and / or - The system includes a first air passage and a second air passage for supplying air in the system; and / or - The system includes a first wall for arranging the first air passage and the second air passage in the system; and / or - The first air passage includes a first sub-passage and a second sub-passage; and / or - The system includes a second wall for arranging the first sub-channel and the second sub-channel in the first air channel; and / or - Depending on the operating mode of the system, the first air passage is arranged to deliver the recirculated cabin air or outside air into the system, and the second air passage is arranged to deliver the recirculated cabin air or outside air into the system; and / or - The system includes a first blower and a second blower, the first air passage is connected to the first blower and air in the first air passage is delivered by using the first blower, and the second air passage is connected to the second blower and air in the second air passage is delivered by using the second blower; and / or - The first blower and the second blower are arranged before the first heat exchanger.

3. The system according to claim 2, wherein: - Air delivered via the first air passage bypasses the first heat exchanger and / or is delivered via the upper part of the first heat exchanger; and / or - The first sub-channel of the first air passage is arranged to deliver air by bypassing the first heat exchanger, and the second sub-channel of the first air passage is arranged to deliver air via the upper part of the first heat exchanger; and / or - The first air passage is arranged after the first heat exchanger to separate the air delivered via the first air passage according to the operating mode of the system, wherein, after the first heat exchanger, the first air passage is arranged to pass at least a portion of the air delivered via the first air passage to the second heat exchanger and / or to provide at least a portion of the air delivered via the first air passage to the core bypass passage of the system, wherein the core bypass passage is arranged to deliver air to the car body side by bypassing the second heat exchanger; and / or - The second air passage is arranged to deliver air toward the air exhaust port; - The second air passage is arranged to deliver air supplied via the second air passage to the first heat exchanger, wherein after passing through the first heat exchanger, the air is discharged to the external environment of the vehicle via the air exhaust port.

4. The system of claim 3, wherein the core bypass channel of the system is used to adjust the temperature in the vehicle compartment according to a temperature requested by the vehicle compartment side.

5. The system according to any one of the preceding claims, wherein the at least two operating modes of the system include at least one of the following: - Car compartment heating mode; - Carriage reheating mode; - Carriage reheating and heat recovery modes; and / or - Cabin cooling mode.

6. The system of claim 5, wherein at least one of the following is implemented in the carriage heating mode: - The first heat exchanger is used for cooling in the system, and the second heat exchanger is used for heating in the system; and / or - The first air passage is selectively arranged to deliver outside air or recirculated cabin air into the system; and / or - The first sub-channel of the first air passage is arranged to deliver air by bypassing the first heat exchanger, and the second sub-channel of the first air passage is arranged to deliver air via the upper portion of the first heat exchanger; and / or - The first sub-channel of the first air passage is arranged to deliver air to the second heat exchanger for heating and distribution on the passenger compartment side of the vehicle, when air is delivered by bypassing the first heat exchanger; and / or - The second sub-channel of the first air passage is arranged for: - Air is directed toward the exhaust port via the upper portion of the first heat exchanger; or - Air is delivered to the second heat exchanger via the upper portion of the first heat exchanger for distribution on the passenger compartment side of the vehicle, wherein air is prevented from being directed toward the exhaust port; or - Air is delivered via the upper portion of the first heat exchanger, wherein, when air is delivered via the upper portion of the first heat exchanger, the second sub-channel of the first air passage is selectively arranged for: delivering air toward the exhaust port; or delivering air to the second heat exchanger for distribution at the passenger compartment side of the vehicle, wherein delivering air toward the exhaust port is prevented; and / or - The second air passage is arranged for supplying outside air into the system; and / or - The second air passage is arranged to deliver air supplied via the second air passage to the first heat exchanger, wherein after passing through the first heat exchanger, the air is discharged to the external environment of the vehicle via the air exhaust port; and / or - The core bypass channel is selectively closed or at least partially opened depending on the temperature requested by the vehicle's passenger compartment side.

7. The system of claim 5, wherein at least one of the following is implemented in the carriage reheating mode: - The first heat exchanger is used for cooling in the system, and the second heat exchanger is used for heating in the system; and / or - The first air passage is selectively arranged to deliver outside air or recirculated cabin air into the system; and / or - The first sub-channel of the first air passage is closed; and / or - The second sub-channel of the first air passage is arranged to deliver air to the second heat exchanger via the upper part of the first heat exchanger for distribution at the vehicle compartment side, wherein air is prevented from being delivered toward the exhaust port; and / or - The second air passage is arranged for supplying outside air into the system; and / or - The second air passage is arranged to deliver air supplied via the second air passage to the first heat exchanger, wherein after passing through the first heat exchanger, the air is discharged to the external environment of the vehicle via the air exhaust port; and / or - The bypass passage is selectively closed or at least partially opened depending on the temperature requested by the vehicle's passenger compartment side.

8. The system of claim 5, wherein at least one of the following is implemented in the carriage reheating and heat recovery mode: - The first heat exchanger is used for cooling in the system, and the second heat exchanger is used for heating in the system; and / or - The first air passage is arranged to deliver outside air into the system; and / or - The first sub-channel of the first air passage is closed; and / or - The second sub-channel of the first air passage is arranged to deliver air to the second heat exchanger via the upper portion of the first heat exchanger for distribution at the vehicle compartment side, wherein air is prevented from being directed toward the exhaust port; and / or - The second air passage is selectively arranged to deliver recirculated cabin air or outside air into the system; and / or - The second air passage is arranged to deliver air supplied via the second air passage to the first heat exchanger, wherein after passing through the first heat exchanger, the air is discharged to the external environment of the vehicle via the air exhaust port; and / or - The bypass passage is selectively closed or at least partially opened depending on the temperature requested by the vehicle's passenger compartment side.

9. The system of claim 5, wherein at least one of the following is implemented in the compartment cooling mode: - The first heat exchanger is used for heating in the system, and the second heat exchanger is used for cooling in the system; - The first air passage is selectively arranged to deliver external air or recirculated cabin air into the system; and / or - The first sub-channel of the first air passage is arranged to deliver air by bypassing the first heat exchanger, and the second sub-channel of the first air passage is arranged to deliver air via the upper portion of the first heat exchanger; and / or - The first sub-channel of the first air passage is arranged to deliver air to the second heat exchanger for cooling and distribution on the passenger compartment side of the vehicle when air is delivered by bypassing the first heat exchanger; and / or - The second sub-channel of the first air passage is arranged to deliver air toward the exhaust port via the upper portion of the first heat exchanger; and / or - The second air passage is arranged for supplying outside air into the system; and / or - The second air passage is arranged to deliver air supplied via the second air passage to the first heat exchanger, wherein after passing through the first heat exchanger, the air is discharged to the external environment of the vehicle via the air exhaust port; and / or - The bypass passage is selectively closed or at least partially opened depending on the temperature requested by the vehicle's passenger compartment side.

10. A vehicle comprising a heating, ventilation, and air conditioning (HVAC) system according to any one of the preceding claims.

11. The use of the heating, ventilation and air conditioning (HVAC) system according to any one of claims 1 to 9 for regulating the climate and / or temperature in the passenger compartment of a vehicle.

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