Vehicle-mounted air conditioning system and motor home

Abstract

The utility model firstly provides a vehicle-mounted air conditioning system which comprises an indoor module and an outdoor module which are connected through a first conduction reversing module, and the indoor module comprises an indoor heat exchanger and a domestic hot water module which are arranged in parallel; the outdoor module comprises a compressor, an outdoor heat exchanger and a liquid cooling heat exchanger which are connected through pipelines; the liquid cooling heat exchanger is connected with the first conduction reversing module; the liquid cooling heat exchanger is at least provided with two assembly connecting pipes in different directions, and the liquid inlet end of the indoor module is selected to be connected with the assembly connecting pipe in the corresponding direction according to the relative position relation of the liquid cooling heat exchanger and the liquid inlet end of the indoor module. The utility model further provides a motor home provided with the air conditioning system. According to the vehicle-mounted air-conditioning system and the motor home provided by the utility model, domestic heat such as warm air and the like in the motor home is integrated with the air-conditioning system, and a plurality of connecting pipes in different directions are arranged, so that the relative positions of the indoor side and the outdoor side are adjustable, and the universality is improved.

Description

Technical Field

[0001] This utility model relates to the field of air conditioning technology, and in particular to vehicle air conditioning systems and RVs equipped with the aforementioned air conditioning systems. Background Technology

[0002] To improve the environmental adaptability of RVs, it is usually necessary to install two independent systems on the air conditioning unit: an air conditioning system and a heating system. The air conditioning system cools the driver's cab and / or the interior of the vehicle, while the heating system is used in low-temperature environments and works in conjunction with the heating mode of the air conditioning system to raise the interior temperature.

[0003] The vehicle is equipped with two systems, requiring two corresponding piping and ventilation systems, which takes up a lot of space. Moreover, during installation, the relative positions of the indoor and outdoor sides are fixed and cannot be adjusted according to the structure of the RV itself, making it impossible to achieve complete compatibility. Utility Model Content

[0004] The main purpose of this utility model is to solve the above-mentioned problems and shortcomings, and to provide a vehicle air conditioning system and RV that integrates the heating system with the air conditioning system, and sets up multiple connecting pipes with different orientations so that the relative positions of the indoor and outdoor sides are adjustable, thereby improving versatility.

[0005] To achieve the purpose of this utility model, this utility model first provides a vehicle air conditioning system, which adopts the following technical solution:

[0006] An in-vehicle air conditioning system includes an indoor module and an outdoor module connected via a first conduction reversing module, wherein:

[0007] Indoor modules include indoor heat exchangers and domestic hot water modules connected in parallel;

[0008] The outdoor module includes a compressor, an outdoor heat exchanger, and a liquid-cooled heat exchanger connected by piping.

[0009] The liquid-cooled heat exchanger is connected to the first conduction switching module;

[0010] The liquid-cooled heat exchanger is provided with at least two sets of assembly connection pipes with different orientations. The liquid inlet end of the indoor module is selected to be connected to the assembly connection pipe with the corresponding orientation according to its relative position to the liquid-cooled heat exchanger.

[0011] Furthermore, the indoor side includes an air duct, and multiple air outlets are provided at different positions at the air outlet end of the air duct.

[0012] Furthermore, the indoor module also includes a fuel-fired heater for auxiliary heating.

[0013] Furthermore, a water pump is installed on the connecting pipe between the indoor module and the outdoor module.

[0014] Furthermore, the domestic hot water module includes a floor heating module and / or a hot water module connected in parallel, and the floor heating module and the hot water module are connected through a second conduction switching module.

[0015] Furthermore, the first conduction reversing module is installed at the main pipe of the inlet end of the indoor heat exchanger, the floor heating and hot water module, and the second conduction reversing module is installed at the confluence of the outlet end of the floor heating and hot water module. The outlet end of the second conduction reversing module is connected to the outlet end of the indoor heat exchanger and then connected to any of the inlet assembly connection pipes of the liquid-cooled heat exchanger.

[0016] Furthermore, the hot water module includes a hot water tank, the liquid-cooled heat exchanger is connected to the hot water tank for heat exchange, and the hot water tank is connected to the domestic water outlet.

[0017] Furthermore, the controller adjusts the flow rate of the liquid coolant delivered by the liquid-cooled heat exchanger to the indoor module and / or the operating status of the fuel oil heater based on the temperature fluctuations in the hot water tank.

[0018] Furthermore, when the hot water module is working, the controller controls the first conduction switching module and the second conduction switching module, and the floor heating and / or indoor heat exchanger does not work.

[0019] Another objective of this invention is to provide a motorhome, which adopts the following technical solution:

[0020] A motorhome is equipped with an on-board air conditioning system as described above, wherein the outdoor module of the on-board air conditioning system has an adjustable mounting position on the vehicle body.

[0021] In summary, the vehicle air conditioning system and RV provided by this utility model have the following technical advantages compared with the prior art:

[0022] The compressor is located on the outdoor side to reduce noise inside the vehicle;

[0023] The outdoor module is equipped with assembly connection pipes facing different directions. The corresponding assembly connection pipe can be selected according to the relative position of the indoor module and the outdoor module to improve the applicability of the air conditioning system to different RVs.

[0024] The outdoor module provides heat to the underfloor heating, indoor heat exchanger (warm air), and water heater, respectively, combining air conditioning and heating, reducing the space occupied by the air conditioning system and improving the space utilization of the RV.

[0025] It is equipped with a fuel oil heater to provide auxiliary heating for domestic hot water, ensuring the heat of domestic hot water and improving user satisfaction;

[0026] The air outlet of the indoor heat exchanger is connected to the air duct and has multiple air outlets at different locations, which can output air from different locations inside the vehicle to improve the temperature uniformity of different locations inside the vehicle. Attached image description:

[0027] Figure 1 This utility model provides a schematic diagram of the connection of components in a vehicle air conditioning system;

[0028] Figure 2 This utility model provides a schematic diagram of the cooling mode of a vehicle air conditioning system;

[0029] Figure 3 This utility model provides a schematic diagram of the heating mode of a vehicle air conditioning system;

[0030] Figure 4 This utility model provides a schematic diagram of a hot water mode for a vehicle air conditioning system.

[0031] Figure 5-a This utility model provides a schematic diagram of the back-mounted installation of an air conditioning system for a motorhome.

[0032] Figure 5-b This utility model provides a side-mounted installation diagram of an air conditioning system for a motorhome;

[0033] Figure 5-c This utility model provides a schematic diagram of the undermount installation of an air conditioning system for a motorhome;

[0034] Figure 5-d This utility model provides a schematic diagram of a top-mounted installation of an air conditioning system for a motorhome;

[0035] The indoor module 1 includes a first conduction reversing module 11, an indoor heat exchanger 12, a floor heating system 13, a hot water tank 14, and a second conduction reversing module 15; the outdoor module 2 includes a compressor 21, a four-way valve 22, an outdoor heat exchanger 23, a fan 24, an electronic expansion valve 25, a liquid-cooled heat exchanger 26, and a water pump 27.

[0036] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the present invention in any way, but rather to illustrate the concept of the present invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0038] In the description of this utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0039] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0040] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0041] This utility model first provides a vehicle air conditioning system, including an indoor module and an outdoor module connected by a first conduction reversing module, wherein:

[0042] Indoor modules include indoor heat exchangers and domestic hot water modules connected in parallel;

[0043] The outdoor module includes a compressor, an outdoor heat exchanger, and a liquid-cooled heat exchanger connected by piping.

[0044] The liquid-cooled heat exchanger is connected to the first conduction switching module;

[0045] The liquid-cooled heat exchanger is provided with at least two assembly connection pipes with different orientations. The liquid inlet end of the indoor module is selected to be connected to the assembly connection pipe with the corresponding orientation according to its relative position to the liquid-cooled heat exchanger.

[0046] In this embodiment, taking the air conditioning system installed on a motorhome as an example, the specific structure of the vehicle-mounted air conditioning system provided by this utility model is introduced.

[0047] like Figures 1 to 4 As shown, the air conditioning system can meet cooling and heating needs, including an outdoor module. The outdoor module includes a compressor, a four-way valve, an outdoor heat exchanger, an electronic expansion valve, and a liquid-cooled heat exchanger connected by refrigeration pipes. All components are connected to form a circulation loop through refrigeration pipes, and the refrigerant flows in reverse direction through the four-way valve. Figures 1 to 4 In the middle, orange and blue are used to distinguish the refrigerant flow reversing within the four-way valve, such as... Figure 1As shown, orange represents the piping / refrigerant entering and leaving the four-way valve after exiting the compressor, and blue represents the piping / refrigerant entering and leaving the four-way valve after exiting the liquid-cooled heat exchanger.

[0048] A fan is installed at the outdoor heat exchanger to improve its heat exchange efficiency. In this embodiment, the liquid-cooled heat exchanger is a water-fluorine heat exchanger, with fluorinated refrigerant flowing inside the tubes and water and antifreeze flowing in the shell side. In this embodiment, the refrigerant flowing in the shell side is antifreeze. By switching the four-way valve, the liquid-cooled heat exchanger can achieve cooling or heating, and the antifreeze achieves heat exchange within the liquid-cooled heat exchanger.

[0049] In this embodiment, the compressor is placed on the outdoor side to isolate the noise generated during the operation of the compressor outside the vehicle and reduce the noise inside the vehicle.

[0050] The indoor module is connected to the liquid-cooled heat exchanger via antifreeze pipes, allowing the antifreeze from the shell side to enter the indoor module. During circulation, the antifreeze exchanges heat with the RV's cabin and / or driver's cab to achieve cooling or heating. The liquid-cooled heat exchanger is equipped with assembly connection pipes, through which the antifreeze pipes are connected to the outdoor module / liquid-cooled heat exchanger assembly.

[0051] Each assembly of connecting pipes includes an inlet pipe and an outlet pipe, allowing the antifreeze to circulate between the indoor module and the liquid-cooled heat exchanger.

[0052] The liquid-cooled heat exchanger is equipped with multiple sets of assembly connection pipes facing different directions. Considering the common structure of RVs, the liquid-cooled heat exchanger typically has at least two sets of assembly connection pipes facing different directions. This allows the air conditioning system to select appropriate assembly connection pipes based on the specific structure of the RV, the installation location of the outdoor module, and the relative positions of the indoor and outdoor modules. In this embodiment, the liquid-cooled heat exchanger has two sets of opposing assembly connection pipes, allowing the outdoor module to be installed in reverse when the indoor module's position is fixed.

[0053] The indoor module includes an indoor heat exchanger and a domestic hot water module connected in parallel. A fan is installed at the indoor heat exchanger, and the fan is connected to the air ducts installed inside the vehicle. The air in the air ducts exchanges heat at the indoor heat exchanger and then flows in the air ducts under the action of the fan.

[0054] The air ducts are installed inside the vehicle, preferably along the ceiling wall of the passenger compartment. Each duct has multiple air outlets in different locations within the passenger compartment, ensuring airflow throughout and maintaining a uniform temperature. Each outlet is equipped with an adjustable damper to adjust the airflow direction and volume, with control options for automatic or manual operation. Furthermore, air ducts and outlets are also installed on the ceiling of the driver's cab.

[0055] The domestic hot water module includes both underfloor heating and hot water modules. The underfloor heating system is laid under the floor of the vehicle. After the antifreeze exchanges heat at the liquid-cooled heat exchanger, it enters the underfloor heating pipes to provide heat to the vehicle interior.

[0056] The hot water module includes, but is not limited to, a water heater, and can also provide hot water at a certain temperature for sinks, kitchens, etc. The hot water module also includes an expansion tank, which is connected to a liquid-cooled heat exchanger through antifreeze piping. The antifreeze and the expansion tank exchange heat indirectly, raising the temperature of the water in the expansion tank. The outlet is connected to the domestic water outlet to supply water to the water heater, sink, and kitchen.

[0057] Furthermore, the indoor module, especially the hot water module, also includes a fuel heater for auxiliary heating during heating. The fuel heater is connected to the underfloor heating, indoor heat exchanger, and hot water module (water heater, etc.) via antifreeze pipes, heating the antifreeze to increase the interior temperature and hot water temperature. Even further, the fuel heater can be connected only to the expansion tank. When the water temperature in the expansion tank is insufficient for showering, it heats the water in the expansion tank to provide sufficient hot water for the water heater. The expansion tank includes a hot water tank and a cold water tank, providing both hot and cold water. A mixer is installed inside the expansion tank to mix the high-temperature water and cold water before outputting hot water at a predetermined temperature.

[0058] like Figures 1 to 4 As shown, in this embodiment, a water pump is connected to the antifreeze pipe at the outlet of the liquid-cooled heat exchanger to drive the antifreeze in the liquid-cooled heat exchanger to flow between the various components of the indoor module and finally return to the liquid-cooled heat exchanger to complete the heat exchange cycle of the antifreeze.

[0059] In this embodiment, the indoor module and the outdoor module are connected through a first conduction reversing module. Specifically, the first conduction reversing module is located between the water pump and the indoor module. As mentioned above, the indoor module includes underfloor heating, an indoor heat exchanger, and a hot water module connected in parallel via antifreeze piping. A first conduction reversing module is installed on the main antifreeze inlet pipe connecting the water pump to the parallel indoor heat exchanger, underfloor heating, and domestic hot water. The first conduction reversing module can be a three-way valve or at least two one-way solenoid valves to control the flow direction of the antifreeze, thereby achieving separate control of hot air, underfloor heating, and domestic hot water.

[0060] In this embodiment, the first conduction reversing module is a three-way valve, which is installed at the branch points of the indoor heat exchanger, underfloor heating, and expansion tank. The inlet is connected to the water pump, the first outlet is connected to the indoor heat exchanger, and the second outlet is connected to the parallel inlet pipes of the underfloor heating and domestic hot water, especially the expansion tank. When the first conduction reversing module is a solenoid valve, it is installed at the inlet ends of the indoor heat exchanger, underfloor heating, and expansion tank, respectively. By controlling the conduction state, the flow state in each parallel antifreeze pipeline is controlled.

[0061] Furthermore, a second switching module is installed at the junction of the outlet pipe of the underfloor heating system and the outlet pipe of the expansion tank to control the conduction status of the underfloor heating system and the expansion tank. Similarly, the second switching module can be a three-way valve or two solenoid valves.

[0062] In this embodiment, the second conduction reversing module is a three-way valve. The first inlet end is connected to the outlet pipe of the underfloor heating system, the second inlet end is connected to the outlet pipe of the expansion tank, and the outlet end merges with the outlet end of the indoor heat exchanger. When the second conduction reversing module is a solenoid valve, it can be installed at the inlet end or outlet end of the underfloor heating system and the expansion tank, respectively.

[0063] The vehicle air conditioning system provided by this utility model includes the following operating modes:

[0064] Cooling mode

[0065] When the ambient temperature is greater than or equal to the first preset temperature, the air conditioning system enters cooling mode, such as... Figure 2 As shown, the refrigerant passes through the compressor, four-way valve, outdoor heat exchanger, and liquid cooling heat exchanger. In the liquid cooling heat exchanger, the refrigerant absorbs heat, causing the antifreeze to cool down. Figure 2 In the middle, the orange lines and buttons represent the flow path and direction of the refrigerant from the compressed refrigerant into and out of the four-way valve. The blue lines and buttons in outdoor module 2 represent the flow direction of the refrigerant after it comes out of the electronic expansion valve and enters the liquid-cooled heat exchanger, and the blue buttons on the indoor module side represent the flow path and direction of the antifreeze.

[0066] After being cooled by heat exchange at the liquid-cooled heat exchanger, the antifreeze flows to the indoor module under the drive of the water pump. At this time, the inlet and outlet of the first conducting reversing module (three-way valve) are connected, and the second outlet is closed. The antifreeze flows through the indoor heat exchanger, and the fan at the indoor heat exchanger blows the cooling energy of the antifreeze into the driver's cab or the passenger compartment through the air duct to cool the interior of the vehicle.

[0067] It should be noted that in cooling mode, the underfloor heating and hot water tanks do not operate. When hot water is needed, the water in the expansion tank is heated by a fuel-fired heater.

[0068] Heating mode

[0069] When the ambient temperature is less than or equal to the second preset temperature, the air conditioning system enters heating mode, such as... Figure 3 As shown, the refrigerant passes through the compressor, four-way valve, liquid-cooled heat exchanger, and outdoor heat exchanger. In the liquid-cooled heat exchanger, the refrigerant releases heat, causing the antifreeze in the liquid-cooled heat exchanger to heat up.

[0070] After the antifreeze is heated by heat exchange at the liquid-cooled heat exchanger, it flows to the indoor module under the drive of the water pump. At this time, the inlet, first outlet, and second outlet of the first switching module are all open, the first liquid inlet of the second switching module is open, the second liquid inlet is closed, and the liquid outlet is open, so that the underfloor heating is on, but the expansion tank is closed.

[0071] The antifreeze is split at the first switching module, flowing into the interior heat exchanger and the underfloor heating system. The interior heat exchanger heats the air flowing through it, creating hot air, which is then blown out from the vents by a fan, raising the interior temperature. The high-temperature antifreeze enters the underfloor heating system, where it assists in heat exchange, raising the floor temperature and further increasing the interior temperature. The combined effect of the warm air and underfloor heating rapidly warms the vehicle interior, ensuring even temperature distribution throughout.

[0072] In cooling mode, both the indoor heat exchanger and the underfloor heating system are in operation. In practical applications, the operating status of the first and second reversing valves can be controlled according to the ambient temperature and temperature preferences to determine whether to use warm air and / or underfloor heating for heating.

[0073] Furthermore, when the indoor heat exchanger is working, the opening status and opening size of each air outlet can be controlled as needed to control the different temperature requirements of each space location.

[0074] Figure 3 Similarly, in the outdoor module, the orange lines and buttons represent the flow direction of the refrigerant from the compressor into and out of the four-way valve, and the flow path and direction of the antifreeze flow in the indoor module; the blue lines and buttons in the outdoor module represent the flow direction of the refrigerant returning to the compressor.

[0075] Hot water mode

[0076] When there is a demand for water at the domestic water outlet, especially when the water heater needs water, and / or when the hot water temperature in the expansion tank is lower than the preset value, the hot water mode is activated.

[0077] In this mode, the outdoor module operates in heating mode, the refrigerant in the liquid-cooled heat exchanger releases heat, the antifreeze takes heat at the liquid-cooled heat exchanger, and the water pump is activated to drive the high-temperature antifreeze into the indoor module.

[0078] At this time, the inlet of the first directional valve is open, the second outlet is open, and the first outlet is closed. The first liquid inlet of the second directional valve is closed, the second liquid inlet is open, and the liquid outlet is open. After the antifreeze enters the indoor module from the water pump, it all enters the expansion tank directly to heat the expansion tank separately and quickly increase the temperature of the expansion tank.

[0079] It should be noted that in hot water mode, especially when the water heater is on, and further, after the water heater has been running for 3 minutes after the water heater has been on for a predetermined time, the above hot water mode is executed, that is, all the antifreeze enters the expansion tank to heat the expansion tank.

[0080] Furthermore, the air conditioning system also includes a controller that controls the conduction mode of the first and second conduction reversing valves when the hot water mode is entered, ensuring that the underfloor heating and indoor heat exchanger stop operating in hot water mode.

[0081] Furthermore, this application also includes another hot water mode not shown in the figure, in which the underfloor heating, indoor heat exchanger and expansion tank operate simultaneously. In this mode, the expansion tank only fluctuates slightly within a preset range, and a small amount of high-temperature antifreeze can replenish the lost heat. Moreover, the separated high-temperature antifreeze will not affect the warm air or underfloor heating, thus avoiding large fluctuations in indoor temperature.

[0082] Furthermore, in winter, to avoid indoor temperature fluctuations caused by the floor heating and indoor heat exchanger not operating during prolonged hot water mode when using the water heater, a fuel heater can be used simultaneously to heat the water in the expansion tank. When the water level in the expansion tank is greater than or equal to a preset value and / or the indoor temperature is lower than a preset value, the heating of the expansion tank by antifreeze can be stopped. The controller controls the first and second directional valves to quickly switch their operating modes, allowing the indoor module to enter heating mode to maintain the indoor temperature.

[0083] This application further provides a motorhome equipped with the aforementioned vehicle-mounted air conditioning system. As mentioned earlier, in this application, because the liquid-cooled heat exchanger has assembly and installation pipes with different orientations, the outdoor module can be installed in different positions on the motorhome according to the motorhome structure, as shown in Figure 5. That is, the position of the outdoor module on the motorhome is adjustable, and the corresponding assembly and installation pipes and the air intake and exhaust modes of the outdoor module can be selected according to the already determined positions of the indoor heat exchanger and air duct on the vehicle.

[0084] like Figure 5-a As shown, the outdoor module of the air conditioning system is placed at the rear of the vehicle body, forming a humpback-style installation. In this mode, the housing of the outdoor module is equipped with air inlet and outlet grilles, and the position of the outdoor heat exchanger and fan is adjusted to form a mode of air intake on both sides and air outlet on the rear side (the side away from the rear wall of the vehicle body) or air outlet on both sides and air intake on the rear side.

[0085] like Figure 5-bAs shown, the outdoor module is installed on the side of the vehicle body. The installation position of the outdoor module is determined according to the opening position of the vehicle door, so as not to interfere with the opening and closing of the door. In this mode, the shell of the outdoor module can be configured to have side (the side not facing the door) air intake and bottom air exhaust or side air exhaust and bottom air intake, so that the air exhaust is not directed towards the door and will not injure passengers passing by the RV.

[0086] like Figure 5-c As shown, the outdoor module is installed at the bottom of the vehicle body, and the housing forms a bottom air outlet and side air intake pattern.

[0087] like Figure 5-d As shown, the outdoor module is installed on the top of the vehicle body, and the housing forms a top air outlet and side air intake pattern.

[0088] In Figure 5, blue represents the RV, and orange represents the outdoor module of the air conditioning system.

[0089] In summary, the vehicle air conditioning system and RV provided by this utility model have the following technical advantages compared with the prior art:

[0090] The compressor is located on the outdoor side to reduce noise inside the vehicle;

[0091] The outdoor module is equipped with assembly connection pipes facing different directions. The corresponding assembly connection pipe can be selected according to the relative position of the indoor module and the outdoor module to improve the applicability of the air conditioning system to different RVs.

[0092] The outdoor module provides heat to the underfloor heating, indoor heat exchanger (warm air), and water heater, respectively, combining air conditioning and heating, reducing the space occupied by the air conditioning system and improving the space utilization of the RV.

[0093] It is equipped with a fuel oil heater to provide auxiliary heating for domestic hot water, ensuring the heat of domestic hot water and improving user satisfaction;

[0094] The air outlet of the indoor heat exchanger is connected to the air duct and has multiple air outlets at different locations, which can output air from different locations inside the vehicle to improve the temperature uniformity of different locations inside the vehicle.

[0095] As described above, similar technical solutions can be derived from the given solutions. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this utility model, without departing from the scope of this utility model's technical solution, shall still fall within the scope of this utility model's technical solution.

Claims

1. A vehicle air conditioning system, characterized in that: This includes an indoor module and an outdoor module connected via a first conduction switching module, wherein, Indoor modules include indoor heat exchangers and domestic hot water modules connected in parallel; The outdoor module includes a compressor, an outdoor heat exchanger, and a liquid-cooled heat exchanger connected by piping. The liquid-cooled heat exchanger is connected to the first conduction switching module; The liquid-cooled heat exchanger is provided with at least two sets of assembly connection pipes with different orientations. The liquid inlet end of the indoor module is selected to be connected to the assembly connection pipe with the corresponding orientation according to its relative position to the liquid-cooled heat exchanger.

2. The vehicle air conditioning system as described in claim 1, characterized in that: The indoor side includes an air duct, and multiple air outlets are provided at different positions at the air outlet end of the air duct.

3. The vehicle air conditioning system as described in claim 1, characterized in that: The indoor module also includes a fuel-fired heater for auxiliary heating.

4. The vehicle air conditioning system as described in claim 1, characterized in that: A water pump is installed on the connecting pipe between the indoor module and the outdoor module.

5. A vehicle air conditioning system as described in any one of claims 1 to 4, characterized in that: The domestic hot water module includes a floor heating module and / or a hot water module connected in parallel, and the floor heating module and the hot water module are connected through a second conduction switching module.

6. The vehicle air conditioning system as described in claim 5, characterized in that: The first conduction reversing module is installed at the main pipe of the inlet end of the indoor heat exchanger, the floor heating and hot water module, and the second conduction reversing module is installed at the junction of the outlet end of the floor heating and hot water module. The outlet end of the second conduction reversing module merges with the outlet end of the indoor heat exchanger and is then connected to any of the inlet assembly connection pipes of the liquid-cooled heat exchanger.

7. A vehicle air conditioning system as described in claim 5, characterized in that: The hot water module includes a hot water tank, and the liquid-cooled heat exchanger is connected to the hot water tank for heat exchange. The hot water tank is connected to the domestic water outlet.

8. A vehicle air conditioning system as described in claim 7, characterized in that: The controller adjusts the flow rate of the liquid coolant delivered from the liquid-cooled heat exchanger to the indoor module and / or the operating status of the fuel oil heater based on the temperature fluctuations in the hot water tank.

9. A vehicle air conditioning system as described in claim 8, characterized in that: When the hot water module is working, the controller controls the first conduction switching module and the second conduction switching module, and the floor heating module and / or indoor heat exchanger are not working.

10. A motorhome, characterized in that: The vehicle is equipped with a vehicle air conditioning system as described in any one of claims 1 to 8, wherein the outdoor module of the vehicle air conditioning system is installed in an adjustable position on the vehicle body.

Images