An air conditioning system and a vehicle having the same

Abstract

The application provides an air conditioning system and a vehicle with the air conditioning system, the air conditioning system comprising a refrigerant circulation system and a water circulation system; the refrigerant circulation system comprising a first refrigerant heat exchanger and a refrigerant circuit, the first refrigerant heat exchanger being arranged on the refrigerant circuit; the first water heat exchanger being arranged on the first branch circuit, and the second water heat exchanger being arranged on the second branch circuit; the first valve having at least a first state and a second state, and the first valve being switchably arranged between the first state and the second state, when the first valve is in the first state, the first water heat exchanger and the second water heat exchanger are arranged in parallel; when the first valve is in the second state, the first water heat exchanger and the second water heat exchanger are arranged in series. The first valve of the application controls the water flow path by switching different states, realizes the water flow configuration of the parallel or series connection of the two water heat exchangers, and integrates the driving air conditioner and the parking air conditioner into a set of high-safety driving and parking integrated air conditioner.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of vehicles, and particularly relates to an air conditioning system and a vehicle with the same. BACKGROUND

[0002] Currently, a truck is equipped with a set of running air conditioner, which is used by the driver when driving. When refrigerating, the compressor is driven by a belt pulley, and when heating, the engine waste heat is used for heating, that is, the engine needs to provide power when refrigerating and heating. Since the truck usually transports long distances, the truck not only has a long driving time, but also needs to be parked when the truck driver needs to rest. The driver needs to refrigerate or heat in the vehicle, and when the truck is parked and needs to refrigerate, the running air conditioner still needs to be run, that is, the engine needs to be kept on, which causes high fuel consumption, high noise, poor comfort, and carbon monoxide poisoning caused by incomplete combustion of fuel. The conventional way is that the truck driver will additionally install a set of parking air conditioner for refrigeration when parking, and a diesel heater for heating when parking. In this way, to realize running and parking, the original truck air conditioner is used for refrigeration and heating when running, and the parking air conditioner and the diesel heater are used for heating when parking. The above two air conditioning systems are used to realize running and parking, which causes a series of problems such as cost, space, and weight of the overall air conditioning design. SUMMARY

[0003] The present application provides an air conditioning system and a vehicle with the same, which can solve the technical problem that the original truck air conditioner is used for refrigeration and heating when running, and the parking air conditioner and the diesel heater are used for heating when parking. The above two air conditioning systems are used to realize running and parking, which causes a series of problems such as cost, space, and weight of the overall air conditioning design.

[0004] The present application provides an air conditioning system, which comprises a refrigerant circulation system and a water circulation system.

[0005] The refrigerant circulation system comprises a first refrigerant heat exchanger and a refrigerant circuit, and the first refrigerant heat exchanger is arranged on the refrigerant circuit.

[0006] The water circulation system comprises a first water heat exchanger, a second water heat exchanger, a first valve, and a water circuit. The medium in the water circuit flows through the first refrigerant heat exchanger. The water circuit is provided with a first branch and a second branch. The first water heat exchanger is arranged on the first branch, and the second water heat exchanger is arranged on the second branch.

[0007] The outlet pipe and the return pipe of the water circuit are selectively connected with the valve ports of the first valve, the inlet and outlet of the first branch and the second branch are selectively connected with the valve ports of the first valve, the first valve has at least a first state and a second state, and the first valve is switchable between the first state and the second state, when the first valve is in the first state, the inlet of the first branch and the inlet of the second branch are respectively communicated with the outlet pipe of the water circuit, and the first water heat exchanger and the second water heat exchanger are arranged in parallel; when the first valve is in the second state, the inlet of the first branch is communicated with the outlet pipe of the water circuit, and the first water heat exchanger and the second water heat exchanger are arranged in series.

[0008] In some embodiments, when the first valve is in the first state, the first valve port of the first valve and the second valve port of the first valve are in communication, the third valve port of the first valve and the fourth valve port of the first valve are in communication, the inlet of the first branch is connected with the outlet pipe of the water circuit, the outlet of the first branch is connected with the third valve port of the first valve, and the return pipe of the water circuit is connected with the fourth valve port of the first valve; the outlet pipe of the water circuit is connected with the first valve port of the first valve, the inlet of the second branch is connected with the second valve port of the first valve, the outlet of the second branch is connected with the return pipe of the water circuit, and the first water heat exchanger and the second water heat exchanger are arranged in parallel;

[0009] When the first valve is in the second state, the third valve port of the first valve and the second valve port of the first valve are in communication, the outlet pipe of the water circuit is connected with the inlet of the first branch, the outlet of the first branch is connected with the third valve port of the first valve, the inlet of the second branch is connected with the second valve port of the first valve, and the outlet of the first branch is connected with the return pipe of the water circuit, and the first water heat exchanger and the second water heat exchanger are arranged in parallel.

[0010] In some embodiments, the first valve further comprises a third state and a fourth state, and the first valve is switchable between the first state, the second state, the third state and the fourth state, when the first valve is in the third state, the inlet and the outlet of the first branch are respectively connected with the outlet pipe and the return pipe of the water circuit, and the inlet and the outlet of the second branch are respectively disconnected from the outlet pipe and the return pipe of the water circuit;

[0011] When the first valve is in the fourth state, the inlet and the outlet of the second branch are respectively connected with the outlet pipe and the return pipe of the water circuit, and the inlet and the outlet of the first branch are respectively disconnected from the outlet pipe and the return pipe of the water circuit.

[0012] In some embodiments, when the first valve is in the third state, the third valve port of the first valve is in communication with the fourth valve port of the first valve, the water inlet of the first branch is connected to the water outlet pipe of the water circuit, the water outlet of the first branch is connected to the third valve port of the first valve, and the water return pipe of the water circuit is connected to the fourth valve port of the first valve.

[0013] When the first valve is in the fourth state, the first valve port of the first valve is in communication with the second valve port of the first valve, the water outlet pipe of the water circuit is connected to the first valve port of the first valve, the water inlet of the second branch is connected to the second valve port of the first valve, and the water outlet of the second branch is connected to the water return pipe of the water circuit.

[0014] In some embodiments, the water circulation system further comprises an engine heat exchanger, the water circuit is provided with a first heat exchange pipe section and a second heat exchange pipe section, the water inlets of the first heat exchange pipe section and the second heat exchange pipe section are respectively connected to the water return pipe of the water circuit, the water outlets of the first heat exchange pipe section and the second heat exchange pipe section are respectively selectively connected to the water outlet pipe of the water circuit, the medium in the first heat exchange pipe section flows through the first coolant heat exchanger, the engine heat exchanger is arranged on the second heat exchange pipe section, and the first coolant heat exchanger and the engine heat exchanger are arranged in parallel.

[0015] In some embodiments, the water circulation system further comprises a second valve, the second valve has at least a fifth state and a sixth state, and the second valve is arranged to be switchable between the fifth state and the sixth state, the water outlets of the first heat exchange pipe section and the second heat exchange pipe section are respectively selectively connected to the second valve, so that the water outlets of the first heat exchange pipe section and the second heat exchange pipe section are selectively connected to the water outlet pipe of the water circuit.

[0016] When the first valve is in the second state and the second valve is in the fifth state, the first coolant heat exchanger, the first water heat exchanger, and the second water heat exchanger are arranged in series; when the first valve is in the second state and the second valve is in the sixth state, the engine heat exchanger, the first water heat exchanger, and the second water heat exchanger are arranged in series.

[0017] In some embodiments, when the two-valve piece is in the fifth state, the second valve port and the first valve port of the second valve piece are in communication, and the water outlet of the first heat exchange pipe section and the water outlet pipe of the water circuit are connected to the second valve port and the first valve port of the second valve piece respectively; when the two-valve piece is in the sixth state, the third valve port and the fourth valve port of the second valve piece are in communication, and the water outlet of the second heat exchange pipe section and the water outlet pipe of the water circuit are connected to the third valve port and the fourth valve port of the second valve piece respectively.

[0018] In some embodiments, the first valve piece and the second valve piece each comprise a housing, a valve core and a motor, the output shaft of the motor is connected to the valve core, and the valve core is rotatably arranged in the housing; a plurality of valve ports are arranged on the housing, a plurality of communication structures are arranged on the valve core, the communication structures are used to communicate two valve ports, and the valve core has a plurality of rotation positions to make a plurality of valve ports respectively communicate with different communication structures.

[0019] In some embodiments, the valve core has at least four rotation positions, when the valve core is in the first rotation position, the first valve piece is in the first state; when the valve core is in the second rotation position, the first valve piece is in the second state; when the valve core is in the third rotation position, the first valve piece is in the third state, or the second valve piece is in the sixth state; when the valve core is in the fourth rotation position, the first valve piece is in the fourth state, or the second valve piece is in the fifth state.

[0020] In some embodiments, the communication structure is a groove structure, a first communication structure, a second communication structure and a third communication structure are sequentially arranged on the outer peripheral wall of the valve core, the first communication structure and the second communication structure are arranged vertically, and the third communication structure is arranged horizontally; a first interface, a second interface, a third interface and a fourth interface are arranged on the housing;

[0021] When the valve core is in the first rotation position, the two ends of the first communication structure are arranged corresponding to the first interface and the second interface respectively, and the two ends of the second communication structure are arranged corresponding to the third interface and the fourth interface respectively; when the valve core is in the second rotation position, the two ends of the third communication structure are arranged corresponding to the second interface and the third interface respectively; when the valve core is in the third rotation position, the two ends of the first communication structure are arranged corresponding to the third interface and the fourth interface respectively; when the valve core is in the fourth rotation position, the two ends of the second communication structure are arranged corresponding to the first interface and the second interface respectively.

[0022] In some embodiments, the refrigerant circulation system is arranged outside the heat exchange environment, and further comprises a compressor, a throttle valve, a second refrigerant heat exchanger, and a four-way valve, the first refrigerant heat exchanger, the throttle valve, and the second refrigerant heat exchanger are arranged in series, a suction pipe of the compressor is connected to a first interface of the four-way valve, an outlet pipe of the compressor is connected to a second interface of the four-way valve, an inlet pipe of the first refrigerant heat exchanger is connected to a third interface of the four-way valve, and an outlet pipe of the second refrigerant heat exchanger is connected to a fourth interface of the four-way valve.

[0023] In some embodiments, the water circulation system further comprises an air outlet assembly, the air outlet assembly comprises an air conditioner box and a fan blade, the fan blade, the first water heat exchanger, and the second water heat exchanger are arranged in the air conditioner box, and the second water heat exchanger is close to an air outlet of the air conditioner box.

[0024] A vehicle comprising a parking-integrated air conditioning system, the air conditioning system being the air conditioning system described above.

[0025] The air conditioning system and the vehicle with the air conditioning system have the following advantages:

[0026] According to the driving state of the truck, the first valve piece controls the water flow path by switching different states, realizing parallel or series water flow configuration, and using a complete set of air conditioning system regardless of the refrigeration mode or the heating mode of the water circulation system, and the refrigerant circulation system provides cold source and heat source, so as to integrate the driving air conditioner and the parking air conditioner into a high-safety parking-integrated air conditioner. The air conditioning system in the application can significantly reduce energy consumption and improve energy efficiency ratio while ensuring comfort, has good energy-saving effect and environmental adaptability, reduces energy loss and improves energy utilization efficiency through more efficient heat exchange and circulation design, and the integrated design avoids the cost and weight of additional installation of parking air conditioner and diesel heater, so that the truck is more economical and light. In addition, by switching the state of the first valve piece, the medium flow direction in the water circulation system can be adjusted according to the operation mode (driving or parking) of the truck and the working mode (refrigeration or heating) of the air conditioner to adapt to different heat exchange requirements, allowing the air conditioning system to be flexibly adjusted under different working conditions to achieve the best heat exchange efficiency and energy consumption ratio, thereby improving the efficiency and adaptability of the entire air conditioning system. Through effective heat exchange and water flow control, the system can quickly respond to the driver's demand for the temperature in the vehicle, provide a comfortable driving environment, and avoid problems such as high fuel consumption, high noise, and carbon monoxide poisoning caused by long-time operation of the engine. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to make the technical solutions in the prior art or the embodiments of the present application clearer, the accompanying drawings needed in the description of the embodiments or the prior art will be briefly described below. Obviously, the accompanying drawings in the following description are only exemplary and, for those skilled in the art, other drawings can be derived from the provided drawings without any creative effort.

[0028] Figure 1 A schematic diagram of an air conditioning system according to an embodiment of the present application;

[0029] Figure 2 A schematic diagram of a first valve according to an embodiment of the present application in a first state;

[0030] Figure 3 A schematic diagram of a first valve according to an embodiment of the present application in a second state;

[0031] Figure 4 A schematic diagram of a first valve according to an embodiment of the present application in a third state;

[0032] Figure 5 A schematic diagram of a first valve according to an embodiment of the present application in a fourth state;

[0033] Figure 6 A schematic diagram of a water circuit according to an embodiment of the present application when the first valve is in a first state;

[0034] Figure 7 A schematic diagram of a water circuit according to an embodiment of the present application when the first valve is in a second state;

[0035] Figure 8 A schematic diagram of a water circuit according to an embodiment of the present application when the first valve is in a third state;

[0036] Figure 9 A schematic diagram of a water circuit according to an embodiment of the present application when the first valve is in a fourth state;

[0037] Figure 10 A schematic diagram of a second valve according to an embodiment of the present application in a fifth state;

[0038] Figure 11 A schematic diagram of a second valve according to an embodiment of the present application in a sixth state;

[0039] Figure 12 A schematic diagram of a valve body according to an embodiment of the present application;

[0040] Figure 13 A schematic diagram of an exploded view of a valve body according to an embodiment of the present application;

[0041] Figure 14 A schematic diagram of a housing and a base according to an embodiment of the present application;

[0042] Figure 15 A schematic view of a housing and a valve core of an embodiment of the present application;

[0043] Figure 16 A schematic view of a valve core of an embodiment of the present application in a first position;

[0044] Figure 17 A schematic view of a valve core of an embodiment of the present application in a second position;

[0045] Figure 18 A schematic view of a valve core of an embodiment of the present application in a third position;

[0046] Figure 19 A schematic view of a valve core of an embodiment of the present application in a fourth position;

[0047] Figure 20 A schematic view of an air outlet assembly of an embodiment of the present application;

[0048] FIG. 1 is a refrigerant circulation system; 101 is a first refrigerant heat exchanger; 102 is a refrigerant loop; 103 is a compressor; 104 is a throttle valve; 105 is a second refrigerant heat exchanger; 106 is a four-way valve; FIG. 2 is a water circulation system; FIG. 3 is a first water heat exchanger; FIG. 4 is a second water heat exchanger; FIG. 5 is a first valve; 51 is a first valve port of the first valve; 52 is a third valve port of the first valve; 53 is a third valve port of the first valve; 54 is a fourth valve port of the first valve; FIG. 6 is a water loop; 601 is a water outlet pipe; 602 is a water return pipe; 61 is a first branch; 62 is a second branch; 63 is a first heat exchange pipe section; 64 is a second heat exchange pipe section; FIG. 7 is an engine heat exchanger; FIG. 8 is a second valve; 81 is a first valve port of the second valve; 82 is a second valve port of the second valve; 83 is a third valve port of the second valve; 84 is a fourth valve port of the second valve; 901 is a housing; 902 is a valve core; 903 is a motor; 904 is a base; 905 is a first sealing member; 906 is a second sealing member; 907 is a fixing plate; 941 is a first conduction structure; 942 is a second conduction structure; 943 is a third conduction structure; 951 is a first interface; 952 is a second interface; 953 is a third interface; 954 is a fourth interface; FIG. 10 is an air outlet assembly; 111 is an air conditioner box; 112 is a fan blade. DETAILED DESCRIPTION

[0049] Clearly, the embodiments described are only a part of all the embodiments of the present application, rather than all the embodiments. The following description of at least one example embodiment is merely illustrative in nature and does not limit the present application or its applications or uses in any way. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts fall within the scope of the present application.

[0050] In the description of the present application, it should be understood that the orientation words such as "front, back, up, down, left, right", "transverse, vertical, perpendicular, horizontal" and "top, bottom" and the like indicated orientation or position relationship are generally based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, without the opposite description, these orientation words do not indicate and imply that the indicated device or element must have a specific orientation or be constructed and operated in a specific orientation, therefore it cannot be understood as a limitation on the scope of protection of the present application; the orientation words "inner, outer" refer to the inner and outer of the contour of each component itself.

[0051] For the convenience of description, spatial relative terms such as "over", "above", "upper surface", "upper" and the like can be used herein to describe the spatial positional relationship of one device or feature with other devices or features as shown in the drawings. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation of the device described in the drawings. For example, if the device in the drawings is inverted, the device described as "above" or "over" other devices or structures will be positioned "below" or "under" other devices or structures. Thus, the example term "above" can include both "above" and "below" orientations. The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein are interpreted accordingly.

[0052] In addition, it should be noted that the use of "first", "second" and the like words to define parts only facilitates the differentiation of corresponding parts, and the above words have no special meaning unless otherwise stated, therefore it cannot be understood as a limitation on the scope of protection of the present application.

[0053] For reference Figures 1 to 3As shown, according to the embodiment of the present application, an air conditioning system is provided, which comprises a refrigerant circulation system 1 and a water circulation system 2; the refrigerant circulation system 1 comprises a first refrigerant heat exchanger 101 and a refrigerant circuit 102, the first refrigerant heat exchanger 101 is arranged on the refrigerant circuit 102; the water circulation system 2 comprises a first water heat exchanger 3, a second water heat exchanger 4, a first valve 5 and a water circuit 6, the medium in the water circuit 6 flows through the first refrigerant heat exchanger 101, the outlet pipe 601 and the return pipe 602 of the water circuit 6 are selectively connected with the valve port of the first valve 5, the water inlet and the water outlet of the first branch 61 and the second branch 62 are selectively connected with the valve port of the first valve 5, the first valve 5 has at least a first state and a second state, and the first valve 5 is switchably arranged between the first state and the second state, when the first valve 5 is in the first state, the water inlets of the first branch 61 and the second branch 62 are respectively communicated with the outlet pipe 601 of the water circuit 6, and the first water heat exchanger 3 and the second water heat exchanger 4 are arranged in parallel; when the first valve 5 is in the second state, the water inlet of the first branch 61 is communicated with the outlet pipe 601 of the water circuit 6, and the first water heat exchanger 3 and the second water heat exchanger 4 are arranged in series.

[0054] Specifically, the refrigerant circulates in the refrigerant circulation system 1, by switching the flow direction of the refrigerant, the first refrigerant heat exchanger 101 can provide cold source and heat source, and because the medium in the water circuit 6 can flow through the first refrigerant heat exchanger 101, the medium in the water circuit 6 exchanges heat with the first refrigerant heat exchanger 101 during the flow process, so that the temperature of the medium in the water circuit 6 is reduced or increased. After the medium in the water circuit 6 exchanges heat with the first refrigerant heat exchanger 101, it flows into the first branch 61 and the second branch 62 respectively, or it first flows into the first branch 61 and then flows into the second branch 62, in this embodiment, the flow direction of the medium in the first branch 61 and the second branch 62 is realized by switching the first valve 5, and the switching is specifically according to the running mode of the truck.

[0055] Specifically, when the truck is in the parking state and needs to use the air conditioning system, the first valve 5 is switched to the first state, at this time, the medium in the water circuit 6 flows into the first branch 61 and the second branch 62, when the water circulation system 2 needs to run in the cooling mode, the low-temperature refrigerant flows in the first refrigerant heat exchanger 101, after the medium in the water circuit 6 flows through the first refrigerant heat exchanger 101, the temperature of the medium is lowered and flows out from the water outlet pipe 601 of the water circuit 6, and flows into the first branch 61 and the second branch 62 respectively; when the water circulation system 2 needs to run in the heating mode, the high-temperature refrigerant flows in the first refrigerant heat exchanger 101, after the medium in the water circuit 6 flows through the first refrigerant heat exchanger 101, the temperature of the medium is raised and flows out from the water outlet pipe 601 of the water circuit 6, and flows into the first branch 61 and the second branch 62 respectively, whether in the cooling mode or in the heating mode, the first valve 5 is in the first state, and the first water heat exchanger 3 and the second water heat exchanger 4 are arranged in parallel, that is, two heat exchangers are used to heat water at the same time, so as to enhance the heat exchange effect, the water in the system flows through the water heat exchanger due to the narrowing of the pipeline, so the pressure is increased, if the two heat exchangers are arranged in parallel, the system pressure is relatively small, the power of the water pump is reduced, thereby saving the power, reducing the power consumption, saving the battery power, increasing the cruising time of the air conditioner in the parking state, and making the water circulation system 2 more energy-saving.

[0056] Specifically, when the truck is in the driving state and needs to use the air conditioning system, the first valve 5 is switched to the second state, at this time, the medium in the water circuit 6 first flows into the first branch 61 and then flows into the second branch 62, when the water circulation system 2 needs to run in the cooling mode, the low-temperature refrigerant flows in the first refrigerant heat exchanger 101, after the medium in the water circuit 6 flows through the first refrigerant heat exchanger 101, the temperature of the medium is lowered and flows out from the water outlet pipe 601 of the water circuit 6, first flows into the first branch 61, flows through the first water heat exchanger 3, then flows into the second branch 62, flows through the second water heat exchanger 4, and then flows into the water return pipe 602 of the water circuit 6 to continue circulation; similarly, when the water circulation system 2 needs to run in the heating mode, the high-temperature refrigerant flows in the first refrigerant heat exchanger 101, after the medium in the water circuit 6 flows through the first refrigerant heat exchanger 101, the temperature of the medium is raised and flows out from the water outlet pipe 601 of the water circuit 6, first flows into the first branch 61, flows through the first water heat exchanger 3, then flows into the second branch 62, flows through the second water heat exchanger 4, and then flows into the water return pipe 602 of the water circuit 6 to continue circulation, whether in the cooling mode or in the heating mode, the first valve 5 is in the second state, and the first water heat exchanger 3 and the second water heat exchanger 4 are arranged in series, so that the flow distance of the water in the heat exchanger is lengthened, thereby increasing the heat exchange area to improve the heat exchange capacity, and the heat exchange effect is better than that of the parallel arrangement of the two heat exchangers, and the heat exchange mode is the super mode.

[0057] In this embodiment, according to the driving state of the truck, the first valve 5 controls the water flow path by switching different states, realizing parallel or series water flow configuration, whether the water circulation system 2 is in cooling mode or heating mode, the parking and driving use a complete set of air conditioning system, the refrigerant circulation system 1 plays the role of providing cold source and heat source, so as to be able to integrate the driving air conditioner and the parking air conditioner into a set of high safety of the parking and driving integrated air conditioner. The air conditioning system in this embodiment can significantly reduce energy consumption and improve energy efficiency ratio while ensuring comfort, has good energy saving effect and environmental adaptability, this system reduces energy loss and improves energy utilization efficiency through more efficient heat exchange and circulation design, and the integrated design avoids the cost and weight of additional installation of parking air conditioner and diesel heater, so that the truck is more economical and light. In addition, this embodiment can adjust the medium flow direction in the water circulation system 2 according to the running mode (driving or parking) of the truck and the working mode (cooling or heating) of the air conditioner by switching the state of the first valve 5, to adapt to different heat exchange requirements, allowing the air conditioning system to flexibly adjust under different working conditions to realize the best heat exchange efficiency and energy consumption ratio, thereby improving the efficiency and adaptability of the whole air conditioning system, through effective heat exchange and water flow control, the system can quickly respond to the driver's demand for indoor temperature, provide a comfortable driving environment, and avoid the problems of high fuel consumption, high noise and carbon monoxide poisoning caused by long time running of the engine.

[0058] It is worth noting that the medium in this embodiment is water, and in other embodiments, the medium can also be other flowable liquids. The refrigerant circulation system 1 in this embodiment is a conventional air conditioning system, that is, the refrigerant circulation system 1 can at least realize two modes of refrigeration and heating, and the refrigerant circulation system 1 in this embodiment can not only provide a cold source when driving, but also provide a heat source when the water circulation system 2 needs to heat. In other embodiments, since the engine needs to work when the truck is driving, the engine heat can also be used to provide heat, so that the refrigerant circulation system 1 does not need to run when driving. In this embodiment, the engine heat is preferred when driving.

[0059] For reference Figures 1 to 3As shown, when the first valve piece 5 is in the first state, the first valve port 51 of the first valve piece 5 and the second valve port 52 of the first valve piece 5 are communicated, the third valve port 53 of the first valve piece 5 and the fourth valve port 54 of the first valve piece 5 are communicated, the water inlet of the first branch 61 is connected with the water outlet pipe 601 of the water circuit 6, the water outlet of the first branch 61 is connected with the third valve port 53 of the first valve piece 5, the water return pipe 602 of the water circuit 6 is connected with the fourth valve port 54 of the first valve piece 5; the water outlet pipe 601 of the water circuit 6 is connected with the first valve port 51 of the first valve piece 5, the water inlet of the second branch 62 is connected with the second valve port 52 of the first valve piece 5, the water outlet of the second branch 62 is connected with the water return pipe 602 of the water circuit 6, and the first water heat exchanger 3 and the second water heat exchanger 4 are arranged in parallel; when the first valve piece 5 is in the second state, the third valve port 53 of the first valve piece 5 and the second valve port 52 of the first valve piece 5 are communicated, the water outlet pipe 601 of the water circuit 6 is connected with the water inlet of the first branch 61, the water outlet of the first branch 61 is connected with the third valve port 53 of the first valve piece 5, the water inlet of the second branch 62 is connected with the second valve port 52 of the first valve piece 5, the water outlet of the first branch 61 is connected with the water return pipe 602 of the water circuit 6, and the first water heat exchanger 3 and the second water heat exchanger 4 are arranged in parallel.

[0060] Specifically, when the truck is in the parking state and needs to use the air conditioning system, the first valve piece 5 is switched to the first state, the first valve port 51 of the first valve piece 5 and the second valve port 52 of the first valve piece 5 are communicated, the third valve port 53 of the first valve piece 5 and the fourth valve port 54 of the first valve piece 5 are communicated, the water inlet of the first branch 61 is connected with the water outlet pipe 601 of the water circuit 6, the water outlet of the first branch 61 is connected with the third valve port 53 of the first valve piece 5, the water return pipe 602 of the water circuit 6 is connected with the fourth valve port 54 of the first valve piece 5; the water outlet pipe 601 of the water circuit 6 is connected with the first valve port 51 of the first valve piece 5, the water inlet of the second branch 62 is connected with the second valve port 52 of the first valve piece 5, the water outlet of the second branch 62 is connected with the water return pipe 602 of the water circuit 6, and the first water heat exchanger 3 and the second water heat exchanger 4 are arranged in parallel.

[0061] Specifically, when the truck is in driving state and needs to use the air conditioning system, the first valve 5 is switched to the second state, the third valve port 53 of the first valve 5 and the second valve port 52 of the first valve 5 are connected, the outlet pipe 601 of the water circuit 6 is connected with the water inlet of the first branch 61, the water outlet of the first branch 61 is connected with the third valve port 53 of the first valve 5, the water inlet of the second branch 62 is connected with the second valve port 52 of the first valve 5, and the water outlet of the first branch 61 is connected with the return pipe 602 of the water circuit 6. At this time, the medium in the water circuit 6 first flows into the first branch 61 and then flows into the second branch 62. Similarly, whether it is a refrigeration mode or a heating mode, the first valve 5 is in the second state, and the first water heat exchanger 3 and the second water heat exchanger 4 are both in series.

[0062] In the present embodiment, since the outlet pipe 601 and the return pipe 602 of the water circuit 6 are selectively connected with the valve ports of the first valve 5, and the water inlets and water outlets of the first branch 61 and the second branch 62 are selectively connected with the valve ports of the first valve 5, no matter the water circuit 6 or the first branch 61 and the second branch 62, the connection relationship between the pipelines can be realized by setting a first valve 5. Different pipeline connections are controlled by a single first valve 5. Single valve control can reduce the variables in the system, making the system more stable and reliable, simplifying the design of the system, reducing the number of valves required in the system, thereby reducing the complexity and potential failure points of the system. Moreover, the simplified pipeline and valve design can reduce energy loss in the system and improve heat exchange efficiency. Moreover, single valve control can speed up the response speed of the system, because the flow path in the system changes more directly and quickly, which helps to quickly adapt to different working conditions.

[0063] It is worth noting that since the present embodiment is based on the setting of two water heat exchangers, considering whether to adopt parallel connection or series connection between the two, if the conventional way is used to realize parallel connection or series connection, many valves need to be set on each pipeline to realize it. The present embodiment can realize it by setting a first valve 5, which is fully considered in the light of heat exchange demand and medium flow direction.

[0064] For reference Figures 1 to 5As shown, the first valve 5 further comprises a third state and a fourth state, and the first valve 5 is switchably arranged between the first state, the second state, the third state and the fourth state, when the first valve 5 is in the third state, the water inlet and the water outlet of the first branch 61 are connected with the water outlet pipe 601 and the return pipe 602 of the water circuit 6 respectively, and the water inlet and the water outlet of the second branch 62 are disconnected with the water outlet pipe 601 and the return pipe 602 of the water circuit 6 respectively; when the first valve 5 is in the fourth state, the water inlet and the water outlet of the second branch 62 are connected with the water outlet pipe 601 and the return pipe 602 of the water circuit 6 respectively, and the water inlet and the water outlet of the first branch 61 are disconnected with the water outlet pipe 601 and the return pipe 602 of the water circuit 6 respectively.

[0065] Specifically, the first valve 5 of the embodiment not only has the first state and the second state, when in the seasonal change, the temperature changes repeatedly, and the air conditioner needs to be switched between cooling and heating, if the same heat exchanger is used for cooling and heating switching, the condensed water generated on the surface of the heat exchanger during cooling will be heated and evaporated to blow into the driver cabin after switching to heating, which will cause the windshield to fog, and further affect the driver's vision and cause traffic accidents, the first valve 5 in the embodiment further comprises a third state and a fourth state, when the truck is in driving state and needs to use the air conditioning system for cooling, the first valve 5 is switched to the third state, at this time only the first branch 61 flows into the medium, and the first water heat exchanger 3 is used for cooling alone; when the truck is in driving state and needs to use the air conditioning system for heating, the first valve 5 is switched to the fourth state, at this time only the second branch 62 flows into the medium, and the second water heat exchanger 4 is used for heating alone; similarly, when parking, if the cooling and heating switching is realized, it can also be realized.

[0066] In the embodiment, the first valve 5 is switched to the third state, and only the medium flows in the first branch 61, and the first water heat exchanger 3 is used alone to perform refrigeration; when heating is required, the first valve 5 is switched to the fourth state, and only the medium flows in the second branch 62, and the second water heat exchanger 4 is used alone to perform heating, so that the system can quickly respond to different temperature requirements, and the efficiency of the air conditioning system is improved. The two water heat exchangers in the embodiment can realize series connection, parallel connection, separate refrigeration, and separate heating functions through the first valve 5, the refrigeration and heating powers are reasonably distributed according to the use working condition scene, the whole system is more reasonable, efficient, and energy-saving, and the several modes can also effectively solve the safety problem of the cockpit fogging caused by the refrigeration switching to heating in the season change season, the system can adapt to different climate conditions and driving environments through the switching of different states of the first valve 5, whether refrigeration or heating, the suitable temperature can be provided, the adaptability and comfort of the system are enhanced, the windshield fogging problem caused by the condensate water evaporation on the surface of the heat exchanger is avoided, and the driving safety is improved. Moreover, through the increase of the state of the first valve 5, more complex fluid control can be realized without increasing additional hardware, the system design is simplified, and since the first valve 5 can realize multiple state switching, the number of other valves required in the system is reduced, thereby reducing the maintenance cost and complexity of the system.

[0067] For reference Figures 6 to 7 As shown in the figure, when the first valve 5 is in the third state, the third valve port 53 of the first valve 5 is in communication with the fourth valve port 54 of the first valve 5, the water inlet of the first branch 61 is connected with the water outlet pipe 601 of the water circuit 6, the water outlet of the first branch 61 is connected with the third valve port 53 of the first valve 5, and the water return pipe 602 of the water circuit 6 is connected with the fourth valve port 54 of the first valve 5; when the first valve 5 is in the fourth state, the first valve port 51 of the first valve 5 is in communication with the second valve port 52 of the first valve 5, the water outlet pipe 601 of the water circuit 6 is connected with the first valve port 51 of the first valve 5, the water inlet of the second branch 62 is connected with the second valve port 52 of the first valve 5, and the water outlet of the second branch 62 is connected with the water return pipe 602 of the water circuit 6.

[0068] Specifically, when the truck is in driving state and needs to use the air conditioning system to cool, the first valve piece 5 is switched to the third state, the third valve port 53 of the first valve piece 5 is communicated with the fourth valve port 54 of the first valve piece 5, the water inlet of the first branch 61 is connected with the water outlet pipe 601 of the water circuit 6, the water outlet of the first branch 61 is connected with the third valve port 53 of the first valve piece 5, and the water return pipe 602 of the water circuit 6 is connected with the fourth valve port 54 of the first valve piece 5, at this time, only the first branch 61 flows into the medium, and the first water heat exchanger 3 is used alone to cool; when the truck is in driving state and needs to use the air conditioning system to heat, the first valve piece 5 is switched to the fourth state, the first valve port 51 of the first valve piece 5 is communicated with the second valve port 52 of the first valve piece 5, the water outlet pipe 601 of the water circuit 6 is connected with the first valve port 51 of the first valve piece 5, the water inlet of the second branch 62 is connected with the second valve port 52 of the first valve piece 5, and the water outlet of the second branch 62 is connected with the water return pipe 602 of the water circuit 6, at this time, only the second branch 62 flows into the medium, and the second water heat exchanger 4 is used alone to heat.

[0069] In this embodiment, the temperature requirements are also different when the seasons change, through this connection mode, the cooling and heating modes can be quickly switched according to the outside temperature and the temperature demand in the cockpit, the adaptability of the system is enhanced, and in the case of not needing to use two heat exchangers at the same time, unnecessary energy consumption is reduced by closing one branch, thereby reducing energy consumption. The control mechanism in the first valve piece 5 of the embodiment can accurately open or close a specific valve port, thereby controlling the communication relationship between the water outlet pipe 601 and the water return pipe 602 of the water circuit 6 and the first branch 61 and the second branch 62, through different states of the first valve piece 5, the pipeline can be configured to realize parallel connection, series connection or separate use of a branch working mode, and the intelligent control logic is integrated, which can automatically or manually switch the state of the first valve piece 5 according to the running state of the truck and the environmental temperature, to adapt to different cooling and heating requirements.

[0070] Referring to Figure 10 and Figure 11 , the water circulation system 2 further comprises an engine heat exchanger 7, the water circuit 6 is provided with a first heat exchange pipe section 63 and a second heat exchange pipe section 64, the water inlets of the first heat exchange pipe section 63 and the second heat exchange pipe section 64 are respectively connected with the water return pipe 602 of the water circuit 6, the water outlets of the first heat exchange pipe section 63 and the second heat exchange pipe section 64 are respectively selectively connected with the water outlet pipe 601 of the water circuit 6, the medium in the first heat exchange pipe section 63 flows through the first refrigerant heat exchanger 101, the engine heat exchanger 7 is arranged on the second heat exchange pipe section 64, and the first refrigerant heat exchanger 101 is arranged in parallel with the engine heat exchanger 7.

[0071] Specifically, when the truck is in the parking state and needs to use the air conditioning system, the medium in the circulating water circuit 6 is used to realize refrigeration and heating, at this time the water inlet of the first heat exchange pipe section 63 is connected with the return water pipe 602 of the water circuit 6, the medium in the water circuit 6 exchanges heat with the first refrigerant heat exchanger 101, and since the water outlet of the first heat exchange pipe section 63 is connected with the water outlet pipe 601 of the water circuit 6, the medium circulates in the water circuit 6 and then flows into the return water pipe 602 of the water circuit 6; when the truck is in the driving state, the engine runs and generates a large amount of heat energy, if the heat energy is not dissipated in time, the engine parts will overheat and even be damaged, when the air conditioning system needs to be heated, the heat emitted by the engine can be fully utilized, and the temperature of the medium is lower than that of the engine, so the medium can dissipate heat for the engine, at this time the water inlet of the second heat exchange pipe section 64 is connected with the return water pipe 602 of the water circuit 6, the medium in the water circuit 6 exchanges heat with the first refrigerant heat exchanger 101, the water outlet of the second heat exchange pipe section 64 is connected with the water outlet pipe 601 of the water circuit 6, and the medium circulates in the water circuit 6 and then flows into the return water pipe 602 of the water circuit 6.

[0072] In the embodiment, the engine heat exchanger 7 can improve the energy utilization efficiency of the whole system by utilizing the heat generated by the engine during operation, and reduce energy waste, in the driving state, the engine heat exchanger 7 can be used as a heat source to enhance the heating capacity of the air conditioning system, especially when the external temperature is low, through effective heating, the engine heat exchanger 7 can provide a more comfortable driving environment, this additional heat source is crucial for maintaining the temperature in the cab, and using the waste heat of the engine for heating reduces the demand for additional energy, thereby reducing fuel consumption and exhaust emission, and being more friendly to the environment. The engine heat exchanger 7 helps to dissipate the heat generated by the engine, prevents the engine from overheating, thereby protecting the engine and prolonging its service life.

[0073] In addition, the engine heat exchanger 7 is arranged in parallel with the first refrigerant heat exchanger 101, which can quickly respond to heating demand, improve the response speed of the system, and through effective heat management, the engine heat exchanger 7 helps to reduce system failures caused by extreme temperature changes, and improves the reliability and durability of the system. The design of the first heat exchange pipe section 63 and the second heat exchange pipe section 64 allows the medium in the water circulation system 2 to flow through different heat exchangers in different sections, which can more effectively utilize heat energy and improve heat exchange efficiency. Through reasonable design of the pipe section, more heat exchange can be achieved in a limited space, making the entire heat exchanger structure more compact. Moreover, the first heat exchange pipe section 63 and the second heat exchange pipe section 64 can be connected with the water outlet pipe 601 and the return water pipe 602 of the water circuit 6 as needed, providing flexible heat exchange paths to adapt to different working conditions and environmental changes. Due to the compact structure, this design can reduce the floor area of the equipment, which is particularly important for applications with limited space.

[0074] It is worth noting that the main working principle of the engine heat exchanger 7 is heat exchange. When the engine is running, the intake of external air will be transported to the oil circuit of the engine, which is responsible for lubrication and heat dissipation of engine components, ensuring that the engine always maintains a safe temperature. In this process, the engine oil flowing through the heat exchanger exchanges heat with the medium inside the heat exchanger. Compared with using the refrigerant circulation system 1 for heating, setting the engine heat exchanger 7 can save energy.

[0075] For reference Figures 1 to 11 As shown in FIG. 1, the water circulation system 2 further comprises a second valve 8, which has at least a fifth state and a sixth state, and the second valve 8 is switchably arranged between the fifth state and the sixth state. The water inlet and the water outlet of the first heat exchange pipe section 63 and the second heat exchange pipe section 64 are selectively connected with the second valve 8, so that the water outlet of the first heat exchange pipe section 63 and the second heat exchange pipe section 64 is selectively connected with the water outlet pipe 601 of the water circuit 6.

[0076] When the first valve 5 is in the second state and the second valve is in the fifth state, the first refrigerant heat exchanger 101, the first water heat exchanger 3 and the second water heat exchanger 4 are arranged in series. When the first valve 5 is in the second state and the second valve is in the sixth state, the engine heat exchanger 7, the first water heat exchanger 3 and the second water heat exchanger 4 are arranged in series.

[0077] Specifically, when the truck is in the parking state and needs to use the air conditioning system, the first valve piece 5 is in the second state, and the second valve piece is in the fifth state, the first refrigerant heat exchanger 101, the first water heat exchanger 3 and the second water heat exchanger 4 are arranged in series, at this time the water inlet of the first heat exchange pipe section 63 is connected with the return water pipe 602 of the water circuit 6, the medium in the water circuit 6 exchanges heat with the first refrigerant heat exchanger 101, and the water outlet of the first heat exchange pipe section 63 is connected with the water outlet pipe 601 of the water circuit 6, the medium circulates in the water circuit 6 and then flows into the return water pipe 602 of the water circuit 6; when the truck is in the driving state and the air conditioning system needs heating, the first valve piece 5 is in the second state, and the second valve piece is in the sixth state, the engine heat exchanger 7, the first water heat exchanger 3 and the second water heat exchanger 4 are arranged in series, at this time the water inlet of the second heat exchange pipe section 64 is connected with the return water pipe 602 of the water circuit 6, the medium in the water circuit 6 exchanges heat with the first refrigerant heat exchanger 101, the water outlet of the second heat exchange pipe section 64 is connected with the water outlet pipe 601 of the water circuit 6, and the medium circulates in the water circuit 6 and then flows into the return water pipe 602 of the water circuit 6.

[0078] In the embodiment, the second valve piece 8 has the fifth state and the sixth state, and can be switched between the two states, so as to control the connection relationship between the water outlets of the first heat exchange pipe section 63 and the second heat exchange pipe section 64, the return water pipe 602 and the water outlet pipe 601 of the water circuit 6, which makes the system be able to adjust the water flow path according to different working conditions, and realize more efficient heat exchange. In the parking state and the driving state of the truck, the demand of the air conditioning system is different, and the state switching of the second valve piece 8 can adapt to these changes, for example, in the parking state, by switching the second valve piece 8 to the fifth state, the first refrigerant heat exchanger 101, the first water heat exchanger 3 and the second water heat exchanger 4 are arranged in series to meet the cooling and heating requirements; and in the driving state, by switching to the sixth state, the heat emitted by the engine is used for heating, and the engine heat exchanger 7, the first water heat exchanger 3 and the second water heat exchanger 4 are arranged in series. In the embodiment, by accurately controlling the water flow through different heat exchangers, the second valve piece 8 helps to improve the heat exchange efficiency, can adjust the water flow path, so that the medium flows through the best heat exchanger combination to achieve the expected temperature control effect, and the setting of the second valve piece 8 helps to more effectively utilize energy, such as using the engine waste heat for heating, reducing the consumption of additional energy, meeting the requirements of energy saving and environmental protection.

[0079] In addition, the first valve 5 and the second valve 8 are arranged at the same time, the combination of different states can realize more abundant heat management mode switching, increase the number of components of the cooling liquid flow path, thereby enriching the control strategy of heat management, and the cooperative work of the first valve 5 and the second valve 8 can accurately control the water flow through different heat exchangers, improve the heat exchange efficiency, and thereby improve the working efficiency of the whole system, according to different working condition requirements, by adjusting the state of the first valve 5 and the second valve 8, the water flow path can be flexibly adjusted, and the adaptability of the system is enhanced.

[0080] For reference Figures 1 to 11 As shown in FIG. 6, when the second valve 8 is in the fifth state, the second valve port 82 and the first valve port 81 of the second valve 8 are communicated, and the water outlet of the first heat exchange pipe segment 63 and the water outlet pipe 601 of the water circuit 6 are connected with the second valve port 82 and the first valve port 81 of the second valve 8 respectively; when the second valve 8 is in the sixth state, the third valve port 83 and the fourth valve port 84 of the second valve 8 are communicated, and the water outlet of the second heat exchange pipe segment 64 and the water outlet pipe 601 of the water circuit 6 are connected with the third valve port 83 and the fourth valve port 84 of the second valve 8 respectively.

[0081] In the embodiment, when the truck is in the parking state and needs to use the air conditioning system, the medium in the circulating water circuit 6 is used to realize refrigeration and heating, when the first valve 5 is in the second state and the second valve 8 is in the fifth state, the second valve port 82 and the first valve port 81 of the second valve 8 are communicated, the water outlet of the first heat exchange pipe segment 63 and the water outlet pipe 601 of the water circuit 6 are connected with the second valve port 82 and the first valve port 81 of the second valve 8 respectively, the first refrigerant heat exchanger 101, the first water heat exchanger 3 and the second water heat exchanger 4 are arranged in series, at this time, the water inlet of the first heat exchange pipe segment 63 is connected with the water return pipe 602 of the water circuit 6, the medium in the water circuit 6 exchanges heat with the first refrigerant heat exchanger 101, since the water outlet of the first heat exchange pipe segment 63 is connected with the water outlet pipe 601 of the water circuit 6, the medium circulates in the water circuit 6 and then flows into the water return pipe 602 of the water circuit 6; when the truck is in the driving state and needs the air conditioning system to heat, the first valve 5 is in the second state and the second valve 8 is in the sixth state, the third valve port 83 and the fourth valve port 84 of the second valve 8 are communicated, the water outlet of the second heat exchange pipe segment 64 and the water outlet pipe 601 of the water circuit 6 are connected with the third valve port 83 and the fourth valve port 84 of the second valve 8 respectively, the engine heat exchanger 7, the first water heat exchanger 3 and the second water heat exchanger 4 are arranged in series, at this time, the water inlet of the second heat exchange pipe segment 64 is connected with the water return pipe 602 of the water circuit 6, the medium in the water circuit 6 exchanges heat with the first refrigerant heat exchanger 101, the water outlet of the second heat exchange pipe segment 64 is connected with the water outlet pipe 601 of the water circuit 6, the medium circulates in the water circuit 6 and then flows into the water return pipe 602 of the water circuit 6.

[0082] In the embodiment, the second valve 8 can be used to reduce the number of pipelines and connectors required, simplify the system design, reduce the manufacturing and maintenance costs, reduce the risk of leakage by reducing the pipeline connection points in the system, and enhance the reliability of the system.

[0083] As a specific implementation, the water circulation system 2 further comprises a water pump, which is arranged on the water outlet pipe 601 of the water circuit 6 and is used to pump the medium into the first branch 61 and the second branch 62, respectively.

[0084] It should be noted that, in the embodiment, the water circuit 6 comprises the water outlet pipe 601 and the water return pipe 602, one end of the water return pipe 602 is connected with the first branch 61 and / or the second branch 62, and the other end of the water return pipe 602 is connected with the water inlet of the first heat exchange pipe section 63 and the second heat exchange pipe section 64, respectively; one end of the water outlet pipe 601 is connected with the water outlet of the first heat exchange pipe section 63 and / or the second heat exchange pipe section 64, and the other end of the water outlet pipe 601 is connected with the first branch 61 and / or the second branch 62, so that the first water heat exchanger 3 and the second water heat exchanger 4 can be connected in parallel or in series, the first heat exchange pipe section 63 and the second heat exchange pipe section 64 are arranged in parallel, and the first refrigerant heat exchanger 101 and the engine heat exchanger 7 are connected in parallel.

[0085] For reference Figures 12 to 19 As shown in the figure, the first valve 5 and the second valve 8 each comprise a housing 901, a valve core 902, and a motor 903, the output shaft of the motor 903 is connected with the valve core 902, and the valve core 902 is rotatably arranged in the housing 901; the housing 901 is provided with a plurality of valve ports, the valve core 902 is provided with a plurality of through structures, the through structures are used to connect two valve ports, and the valve core 902 has a plurality of rotation positions to make the plurality of valve ports respectively connected with different through structures.

[0086] Specifically, when the first valve 5 and the second valve 8 need to switch states, the motor 903 drives the valve core 902 to rotate to the corresponding position, the through structure can connect two valve ports with each other, and after the pipeline is connected with the valve port, the connection between two pipelines can be realized, when the valve body needs to switch states, the motor 903 drives the valve core 902 to rotate again, so that another through structure is connected with the valve port, thereby realizing the switching between different states of the valve body.

[0087] In this embodiment, the valve core 902 is driven to rotate by the motor 903, which can realize precise control of the water flow path, ensure that the medium flows through a specific heat exchanger, improve the heat exchange efficiency and the accuracy of system response, and the valve core 902 can be rotatably arranged in the housing 901, so that the valve body can quickly respond to the control instruction and realize rapid switching between states. The direct connection of the motor 903 and the valve core 902 simplifies the structure of the valve body, making the overall design more compact and saving space. Moreover, by providing multiple conduction structures, the valve core 902 has multiple rotation positions, allowing the valve body to have a high adjustable ratio, meaning that a single valve can replace multiple valves to meet a wide range of flow requirements, reducing material and infrastructure costs. The valve core 902 can be connected to different conduction structures as needed, increasing the flexibility of operation. In addition, multiple conduction structures allow the valve core 902 to connect different valve ports at different rotation positions, thereby realizing multiple fluid flow combinations to meet complex fluid control requirements. Multiple conduction structures allow the air conditioning system to adjust the fluid flow direction according to the different heat exchange requirements of the water circulation system 2, enhancing the adaptability and flexibility of the system. A valve core 902 with multiple conduction structures can replace multiple simple valves, thereby simplifying system design, reducing the number of valves required, and reducing manufacturing and maintenance costs.

[0088] For reference Figures 12 to 19 As shown in FIG. 6, the valve core 902 has at least four rotation positions. When the valve core 902 is in the first rotation position, the first valve 5 is in the first state; when the valve core 902 is in the second rotation position, the first valve 5 is in the second state; when the valve core 902 is in the third rotation position, the first valve 5 is in the third state, or the second valve 8 is in the sixth state; when the valve core 902 is in the fourth rotation position, the first valve 5 is in the fourth state, or the second valve 8 is in the fifth state.

[0089] Specifically, when the valve core 902 is in the first rotation position, the first valve 5 is in the first state, the first valve port 51 of the first valve 5 and the second valve port 52 of the first valve 5 are in conduction, the third valve port 53 of the first valve 5 and the fourth valve port 54 of the first valve 5 are in conduction, the water inlet of the first branch 61 is connected to the water outlet pipe 601 of the water circuit 6, the water outlet of the first branch 61 is connected to the third valve port 53 of the first valve 5, and the water return pipe 602 of the water circuit 6 is connected to the fourth valve port 54 of the first valve 5; the water outlet pipe 601 of the water circuit 6 is connected to the first valve port 51 of the first valve 5, the water inlet of the second branch 62 is connected to the second valve port 52 of the first valve 5, the water outlet of the second branch 62 is connected to the water return pipe 602 of the water circuit 6, and the first water heat exchanger 3 and the second water heat exchanger 4 are arranged in parallel.

[0090] Specifically, when the valve core 902 is in the second rotational position, the first valve 5 is in the second state, the third valve port 53 of the first valve 5 and the second valve port 52 of the first valve 5 are communicated, the water outlet pipe 601 of the water circuit 6 is connected with the water inlet of the first branch 61, the water outlet of the first branch 61 is connected with the third valve port 53 of the first valve 5, the water inlet of the second branch 62 is connected with the second valve port 52 of the first valve 5, the water outlet of the first branch 61 is connected with the water return pipe 602 of the water circuit 6, and the first water heat exchanger 3 and the second water heat exchanger 4 are connected in parallel.

[0091] Specifically, when the valve core 902 is in the third rotational position, the first valve 5 is in the third state, the third valve port 53 of the first valve 5 and the fourth valve port 54 of the first valve 5 are communicated, the water inlet of the first branch 61 is connected with the water outlet pipe 601 of the water circuit 6, the water outlet of the first branch 61 is connected with the third valve port 53 of the first valve 5, and the water return pipe 602 of the water circuit 6 is connected with the fourth valve port 54 of the first valve 5; or the second valve 8 is in the sixth state, the third valve port and the fourth valve port of the second valve 8 are communicated, and the water outlet of the second heat exchange pipe section 64 and the water outlet pipe 601 of the water circuit 6 are respectively connected with the third valve port and the fourth valve port of the second valve 8.

[0092] Specifically, when the valve core 902 is in the fourth rotational position, the first valve 5 is in the fourth state, the water inlets and outlets of the second branch 62 are respectively connected with the water outlet pipe 601 and the water return pipe 602 of the water circuit 6, and the water inlets and outlets of the first branch 61 are respectively disconnected with the water outlet pipe 601 and the water return pipe 602 of the water circuit 6; or the second valve 8 is in the fifth state, the second valve port and the first valve port of the second valve 8 are communicated, and the water outlet of the first heat exchange pipe section 63 and the water outlet pipe 601 of the water circuit 6 are respectively connected with the second valve port and the first valve port of the second valve 8.

[0093] In this embodiment, through the multiple rotational positions of the valve core 902, multiple different fluid flow combinations can be realized, thereby providing a more flexible control strategy to adapt to different working conditions and requirements.

[0094] For reference Figures 12 to 19As shown, the through-structure is a slot structure, the outer peripheral wall of the valve core 902 is sequentially provided with a first through-structure 941, a second through-structure 942 and a third through-structure 943, the first through-structure 941 and the second through-structure 942 are vertically arranged, and the third through-structure 943 is horizontally arranged; the housing 901 is provided with a first interface 951, a second interface 952, a third interface 953 and a fourth interface 954; when the valve core 902 is located at the first rotation position, the two ends of the first through-structure 941 are respectively arranged corresponding to the first interface 951 and the second interface 952, and the two ends of the second through-structure 942 are respectively arranged corresponding to the third interface 953 and the fourth interface 954; when the valve core 902 is located at the second rotation position, the two ends of the third through-structure 943 are respectively arranged corresponding to the second interface 952 and the third interface 953; when the valve core 902 is located at the third rotation position, the two ends of the first through-structure 941 are respectively arranged corresponding to the third interface 953 and the fourth interface 954; when the valve core 902 is located at the fourth rotation position, the two ends of the second through-structure 942 are respectively arranged corresponding to the first interface 951 and the second interface 952.

[0095] In this embodiment, the vertical and horizontal through-structure design can optimize the space layout, allowing more fluid connection paths in limited space, improving the compactness and space utilization of the system. Through different direction through-structures (vertical and horizontal), fluid flow can be more flexibly controlled, complex fluid control logic can be realized to adapt to different working modes and needs, and through reasonable through-structure arrangement, fluid flow resistance in the system can be reduced, fluid flow efficiency can be improved, and system energy consumption can be reduced. The precise correspondence between the through-structure and the interface can reduce the risk of fluid leakage, enhance the sealing and reliability of the system, and different through-structure arrangements can help more effectively manage fluid heat exchange, especially in systems that require precise temperature control. Moreover, the arrangement of the three through-structures in this embodiment can simplify the manufacturing process, reduce complexity in production, and improve production efficiency.

[0096] As a specific embodiment, the valve core 902 and the interface on the shell 901 are in a face-to-face manner, the lead-through structure of the valve core 902 is correspondingly arranged on the interface, the shell 901 is mounted on the base 904, the base 904 is also provided with four interfaces, the first sealing member 905 is arranged on the four interfaces and correspondingly arranged on the interface of the shell 901, the base 904 is provided with four water pipe joints to be connected with the air conditioning system, in order to further improve the sealing performance of the valve body, the outer peripheral edge of the lead-through structure is provided with the second sealing member 906, the second sealing member 906 is tightly attached to the inner wall of the shell 901 to prevent water leakage, and the first sealing member 905 and the second sealing member 906 are both relatively sealing rings. In order to facilitate the installation of the motor 903, the fixed plate 907 is arranged on the shell 901, the motor 903 is installed on the fixed plate 907, and the output shaft of the motor 903 extends out of the fixed plate 907 and is connected with the valve core 902.

[0097] With reference to Figures 1 to 11 As shown in the figure, the refrigerant circulation system 1 is arranged outside the heat exchange environment, and further comprises a compressor 103, a throttling valve 104, a second refrigerant heat exchanger 105 and a four-way valve 106. The first refrigerant heat exchanger 101, the throttling valve 104 and the second refrigerant heat exchanger 105 are sequentially connected in series. The suction pipe of the compressor 103 is connected with the first interface of the four-way valve 106, the outlet pipe of the compressor 103 is connected with the second interface of the four-way valve 106, the inlet pipe of the first refrigerant heat exchanger 101 is connected with the third interface of the four-way valve 106, and the outlet pipe of the second refrigerant heat exchanger 105 is connected with the fourth interface of the four-way valve 106.

[0098] Specifically, taking the refrigeration of the refrigerant circulation system 1 as an example, the suction pipe of the compressor 103 is connected with the first interface of the four-way valve 106, and the outlet pipe of the compressor 103 is connected with the second interface of the four-way valve 106. The compressor 103 sucks low-pressure and low-temperature refrigerant vapor from the evaporator (first refrigerant heat exchanger 101), and then compresses it into high-pressure and high-temperature vapor. The compressed high-pressure and high-temperature vapor enters the second refrigerant heat exchanger 105 (condenser) through the second interface of the four-way valve 106, releases heat to the surrounding environment, and changes from gas to high-pressure liquid. The condensed high-pressure liquid refrigerant passes through the throttling valve 104 again, and is further reduced in pressure and temperature. The low-pressure and low-temperature liquid refrigerant enters the first refrigerant heat exchanger 101 (evaporator), absorbs heat and evaporates, thereby cooling the water or other medium flowing through the evaporator, achieving the effect of refrigeration. When heating, the flow direction of the refrigerant is switched, and the four-way valve 106 is used to control the flow direction of the refrigerant to realize the switching between the refrigeration and heating modes. In the refrigeration mode, the four-way valve 106 makes the high-pressure outlet gas of the compressor 103 enter the condenser, and the low-pressure suction gas enters the evaporator. In the heating mode, the four-way valve 106 switches the flow direction, so that the roles of the evaporator and the condenser are interchanged.

[0099] In this embodiment, the refrigerant system is integrated into a module placed outside the passenger compartment to prevent leaks from causing safety accidents. The OEM only needs to install this module independently, with a pre-reserved water pipe interface connecting it to the passenger compartment heat exchanger for air conditioning via water. This system has a high degree of integration and offers advantages over traditional distributed component installation methods for vehicle air conditioning, such as convenient installation, no need for the OEM to fill refrigerant, and a lower risk of refrigerant leaks. Moreover, setting up the refrigerant circulation system 1 outside the passenger compartment allows for better management of the vehicle's thermal environment. This makes the flow and heat transfer processes of various subsystems within the vehicle's thermal environment more complex, but it also allows for more precise temperature control.

[0100] It is worth noting that the first refrigerant heat exchanger 101 is a plate heat exchanger with two flow paths. One path is for the flow of refrigerant, and the other path is for the flow of the medium. The two paths flow in opposite directions to achieve heat exchange. In this embodiment, the heat exchange environment can be the passenger compartment. When the air conditioning system is installed in other spaces, the heat exchange environment can also refer to the indoor space. In this embodiment, the compressor 103 is driven by power supply. The power source can be a storage battery. During driving, the storage battery is charged for backup when parked. In addition to the compressor 103, the first valve 5, the second valve 8, and the four-way valve 106 also require power. It is precisely because the compressor 103 is electrically driven that the cooling and heating needs can still be met even when the truck is parked and the engine is not running.

[0101] See also Figure 1 and Figure 20 As shown, the water circulation system 2 also includes an air outlet assembly 10, which includes an air conditioning unit 111 and a fan blade 112. The fan blade 112, the first water heat exchanger 3, and the second water heat exchanger 4 are disposed in the air conditioning unit 111, and the second water heat exchanger 4 is close to the air outlet of the air conditioning unit 111.

[0102] In this embodiment, during seasonal transitions when temperatures fluctuate, switching between cooling and heating is necessary. If the same heat exchanger is used for both, the condensation generated on the heat exchanger surface during cooling will evaporate upon switching to heating and blow into the cabin, causing fogging of the windshield. This can impair the driver's visibility and potentially lead to traffic accidents. Therefore, this air conditioning system is designed with two water heat exchangers that can be used independently for cooling and heating. The first water heat exchanger 3 can be used for cooling, and the second water heat exchanger 4 can be used independently for heating. The second water heat exchanger 4 is placed near the air outlet (closer to the cabin air outlet) to prevent the condensation from the first water heat exchanger 3 caused by cooling from evaporating and causing fogging of the windshield. In this situation, during cooling, the first valve 5 is adjusted to the third state, with only the first water heat exchanger 3 operating independently; when switching to heating, the first valve 5 is adjusted to the fourth state, with only the second water heat exchanger 4 operating independently.

[0103] In the present embodiment, the separate heat exchangers can perform heat exchange more efficiently, which can be optimized specifically for refrigeration or heating, instead of switching modes in the same heat exchanger, which can improve the overall efficiency of the air conditioning system, by precisely controlling which heat exchanger is in working condition, unnecessary energy consumption can be reduced, for example, in heating mode, the heat exchanger that does not need refrigeration can be closed, thereby reducing energy waste. And by precisely controlling which heat exchanger is in working condition, unnecessary energy consumption can be reduced, for example, in heating mode, the heat exchanger that does not need refrigeration can be closed, thereby reducing energy waste, in addition, the independent heat exchanger reduces the risk of the entire system failing due to the failure of one heat exchanger, improves the reliability and stability of the system.

[0104] A vehicle comprising an integrated air conditioning system, the air conditioning system being the air conditioning system described above.

[0105] It is easily understood by those skilled in the art that the above-mentioned advantageous modes can be freely combined and superimposed without conflict.

[0106] The above is only the preferred embodiment of the present application, and does not limit the present application, any modification, equivalent replacement and improvement within the spirit and principle of the present application shall be included in the protection scope of the present application. The above is only the preferred embodiment of the present application, it should be pointed out that for ordinary skilled in the art, without departing from the technical principles of the present application, a number of improvements and modifications can be made, these improvements and modifications should be considered as the protection scope of the present application.

Claims

1. An air conditioning system, characterized by, The application relates to a refrigerant circulation system (1) and a water circulation system (2). The refrigerant circulation system (1) comprises a first refrigerant heat exchanger (101) and a refrigerant loop (102), and the first refrigerant heat exchanger (101) is arranged on the refrigerant loop (102). The water circulation system (2) comprises a first water heat exchanger (3), a second water heat exchanger (4), a first valve (5) and a water loop (6), medium in the water loop (6) flows through the first refrigerant heat exchanger (101), the water loop (6) is provided with a first branch (61) and a second branch (62), the first water heat exchanger (3) is arranged on the first branch (61), and the second water heat exchanger (4) is arranged on the second branch (62). An outlet water pipe (601) and a return water pipe (602) of the water loop (6) are selectively connected with valve ports of the first valve (5), water inlets and outlets of the first branch (61) and the second branch (62) are selectively connected with valve ports of the first valve (5), the first valve (5) has at least a first state and a second state, and the first valve (5) is arranged in a switchable mode between the first state and the second state, when the first valve (5) is in the first state, the water inlets of the first branch (61) and the second branch (62) are respectively communicated with the outlet water pipe (601) of the water loop (6), and the first water heat exchanger (3) and the second water heat exchanger (4) are arranged in parallel, when the first valve (5) is in the second state, the water inlet of the first branch (61) is communicated with the outlet water pipe (601) of the water loop (6), and the first water heat exchanger (3) and the second water heat exchanger (4) are arranged in series. When the first valve (5) is in the first state, a first valve port (51) of the first valve (5) and a second valve port (52) of the first valve (5) are conducted, a third valve port (53) of the first valve (5) and a fourth valve port (54) of the first valve (5) are conducted, the water inlet of the first branch (61) is connected with the outlet water pipe (601) of the water loop (6), the water outlet of the first branch (61) is connected with the third valve port (53) of the first valve (5), the return water pipe (602) of the water loop (6) is connected with the fourth valve port (54) of the first valve (5), the outlet water pipe (601) of the water loop (6) is connected with the first valve port (51) of the first valve (5), the water inlet of the second branch (62) is connected with the second valve port (52) of the first valve (5), the water outlet of the second branch (62) is connected with the return water pipe (602) of the water loop (6), and the first water heat exchanger (3) and the second water heat exchanger (4) are arranged in parallel.

2. The air conditioning system of claim 1, wherein, ​ When the first valve (5) is in the second state, the third valve port (53) of the first valve (5) and the second valve port (52) of the first valve (5) are communicated, the water outlet pipe (601) of the water circuit (6) is connected with the water inlet of the first branch (61), the water outlet of the first branch (61) is connected with the third valve port (53) of the first valve (5), the water inlet of the second branch (62) is connected with the second valve port (52) of the first valve (5), the water outlet of the first branch (61) is connected with the water return pipe (602) of the water circuit (6), and the first water heat exchanger (3) and the second water heat exchanger (4) are arranged in parallel.

3. The air conditioning system of claim 1, wherein, The first valve (5) further comprises a third state and a fourth state, and the first valve (5) is switchably arranged between the first state, the second state, the third state and the fourth state, when the first valve (5) is in the third state, the water inlet and the water outlet of the first branch (61) are respectively connected with the water outlet pipe (601) and the water return pipe (602) of the water circuit (6), and the water inlet and the water outlet of the second branch (62) are respectively disconnected from the water outlet pipe (601) and the water return pipe (602) of the water circuit (6); When the first valve (5) is in the fourth state, the water inlet and the water outlet of the second branch (62) are respectively connected with the water outlet pipe (601) and the water return pipe (602) of the water circuit (6), and the water inlet and the water outlet of the first branch (61) are respectively disconnected from the water outlet pipe (601) and the water return pipe (602) of the water circuit (6).

4. The air conditioning system of claim 3, wherein, When the first valve (5) is in the third state, the third valve port (53) of the first valve (5) and the fourth valve port (54) of the first valve (5) are communicated, the water inlet of the first branch (61) is connected with the water outlet pipe (601) of the water circuit (6), the water outlet of the first branch (61) is connected with the third valve port (53) of the first valve (5), and the water return pipe (602) of the water circuit (6) is connected with the fourth valve port (54) of the first valve (5); When the first valve (5) is in the fourth state, the first valve port (51) of the first valve (5) and the second valve port (52) of the first valve (5) are communicated, the water outlet pipe (601) of the water circuit (6) is connected with the first valve port (51) of the first valve (5), the water inlet of the second branch (62) is connected with the second valve port (52) of the first valve (5), and the water outlet of the second branch (62) is connected with the water return pipe (602) of the water circuit (6).

5. The air conditioning system of claim 1, wherein, The water circulation system (2) further comprises an engine heat exchanger (7), the water loop (6) is provided with a first heat exchange pipe section (63) and a second heat exchange pipe section (64), water inlets of the first heat exchange pipe section (63) and the second heat exchange pipe section (64) are connected with a water return pipe (602) of the water loop (6) respectively, water outlets of the first heat exchange pipe section (63) and the second heat exchange pipe section (64) are selectively connected with a water outlet pipe (601) of the water loop (6) respectively, medium in the first heat exchange pipe section (63) flows through the first refrigerant heat exchanger (101), the engine heat exchanger (7) is arranged on the second heat exchange pipe section (64), and the first refrigerant heat exchanger (101) and the engine heat exchanger (7) are arranged in parallel.

6. The air conditioning system of claim 5, wherein, The water circulation system (2) further comprises a second valve (8), the second valve (8) has at least a fifth state and a sixth state, and the second valve (8) is arranged switchably between the fifth state and the sixth state, water inlets and water outlets of the first heat exchange pipe section (63) and the second heat exchange pipe section (64) are selectively connected with the second valve (8) respectively, so that the water outlets of the first heat exchange pipe section (63) and the second heat exchange pipe section (64) are selectively connected with the water outlet pipe (601) of the water loop (6); When the first valve (5) is in the second state and the second valve (8) is in the fifth state, the first refrigerant heat exchanger (101), the first water heat exchanger (3) and the second water heat exchanger (4) are arranged in series in sequence; when the first valve (5) is in the second state and the second valve (8) is in the sixth state, the engine heat exchanger (7), the first water heat exchanger (3) and the second water heat exchanger (4) are arranged in series in sequence.

7. The air conditioning system of claim 6, wherein, When the second valve (8) is in the fifth state, a second valve port (82) and a first valve port (81) of the second valve (8) are in conduction, the water outlet of the first heat exchange pipe section (63) and the water outlet pipe (601) of the water loop (6) are connected with the second valve port (82) and the first valve port (81) of the second valve (8) respectively; when the second valve (8) is in the sixth state, a third valve port (83) and a fourth valve port (84) of the second valve (8) are in conduction, the water outlet of the second heat exchange pipe section (64) and the water outlet pipe (601) of the water loop (6) are connected with the third valve port (83) and the fourth valve port (84) of the second valve (8) respectively.

8. The air conditioning system of claim 6, wherein, The first valve (5) and the second valve (8) each comprise a housing (901), a valve core (902) and a motor (903), the output shaft of the motor (903) is connected with the valve core (902), the valve core (902) is rotatably arranged in the housing (901); a plurality of interfaces are arranged on the housing (901), a plurality of through structures are arranged on the valve core (902), the through structures are used for connecting two interfaces, and the valve core (902) has a plurality of rotation positions, so that a plurality of interfaces are respectively connected with different through structures.

9. The air conditioning system of claim 8, wherein, The valve core (902) has at least four rotation positions, when the valve core (902) is located at a first rotation position, the first valve (5) is in the first state; when the valve core (902) is located at a second rotation position, the first valve (5) is in the second state; when the valve core (902) is located at a third rotation position, the first valve (5) is in a third state, or the second valve (8) is in the sixth state; when the valve core (902) is located at a fourth rotation position, the first valve (5) is in a fourth state, or the second valve (8) is in the fifth state.

10. The air conditioning system of claim 9, wherein, The through structure is a groove structure, a first through structure (941), a second through structure (942) and a third through structure (943) are sequentially arranged on the outer peripheral wall of the valve core (902), the first through structure (941) and the second through structure (942) are vertically arranged, and the third through structure (943) is horizontally arranged; a first interface (951), a second interface (952), a third interface (953) and a fourth interface (954) are arranged on the housing (901); When the valve core (902) is located at the first rotation position, the two ends of the first through structure (941) are respectively arranged corresponding to the first interface (951) and the second interface (952), and the two ends of the second through structure (942) are respectively arranged corresponding to the third interface (953) and the fourth interface (954); when the valve core (902) is located at the second rotation position, the two ends of the third through structure (943) are respectively arranged corresponding to the second interface (952) and the third interface (953); when the valve core (902) is located at the third rotation position, the two ends of the first through structure (941) are respectively arranged corresponding to the third interface (953) and the fourth interface (954); when the valve core (902) is located at the fourth rotation position, the two ends of the second through structure (942) are respectively arranged corresponding to the first interface (951) and the second interface (952).

11. The air conditioning system of claim 1, wherein, The refrigerant circulation system (1) is arranged outside the heat exchange environment, and further comprises a compressor (103), a throttling valve (104), a second refrigerant heat exchanger (105) and a four-way valve (106), the first refrigerant heat exchanger (101), the throttling valve (104) and the second refrigerant heat exchanger (105) are arranged in series, a suction pipe of the compressor (103) is connected with a first interface of the four-way valve (106), an outlet pipe of the compressor (103) is connected with a second interface of the four-way valve (106), an inlet pipe of the first refrigerant heat exchanger (101) is connected with a third interface of the four-way valve (106), and an outlet pipe of the second refrigerant heat exchanger (105) is connected with a fourth interface of the four-way valve (106).

12. The air conditioning system of claim 1, wherein, The water circulation system (2) further comprises an air outlet assembly (10), the air outlet assembly (10) comprises an air conditioner box (111) and a fan blade (112), the fan blade (112), the first water heat exchanger (3) and the second water heat exchanger (4) are arranged in the air conditioner box (111), and the second water heat exchanger (4) is close to an air outlet of the air conditioner box (111).

13. A vehicle comprising a self-contained air conditioning system, characterized in that The air conditioner system is the air conditioner system according to any one of claims 1 to 12.

Images