A fluid control device and a vehicle thermal management system having the same

Abstract

The application discloses at least one fluid control device, a valve unit comprising a first valve mechanism, a second valve mechanism, a third valve mechanism, a fourth valve mechanism, a first throttling mechanism, a second throttling mechanism, a block unit comprising a mounting hole part, the mounting hole part comprising a first mounting hole, a second mounting hole, a third mounting hole, a fourth mounting hole, a fifth mounting hole, a sixth mounting hole, the block unit comprising a first interface, a second interface, a third interface, a fourth interface, a fifth interface, a sixth interface, a seventh interface, an eighth interface, by adjusting the first throttling mechanism, the fluid flow between the fifth interface and the sixth interface can be adjusted, by adjusting the second throttling mechanism, the fluid flow between the eighth interface and the fourth interface can be adjusted, the pipeline connection can be reduced, and the application also discloses a vehicle thermal management system using the above fluid control device.

Description

Technical Field

[0001] This invention relates to the field of fluid control technology, and more specifically to a fluid control device and a vehicle thermal management system having the device. Background Technology

[0002] In a thermal management system, multiple valves are required to achieve different operating modes of the system. Taking a vehicle thermal management system as an example, the thermal management system includes multiple valves and throttling mechanisms. The connection between these valves and throttling mechanisms requires multiple pipelines, and the pipeline connection of the system is relatively complex and inconvenient to assemble. Summary of the Invention

[0003] The purpose of this application is to provide a fluid control device that can reduce pipeline connections.

[0004] This application provides a fluid control device, including a valve unit and a block unit. The valve unit includes a first valve mechanism, a second valve mechanism, a third valve mechanism, a fourth valve mechanism, a first throttling mechanism, and a second throttling mechanism. The block unit includes a mounting hole portion, which includes a first mounting hole, a second mounting hole, a third mounting hole, a fourth mounting hole, a fifth mounting hole, and a sixth mounting hole. At least a portion of the first valve mechanism is located in the first mounting hole, at least a portion of the second valve mechanism is located in the second mounting hole, at least a portion of the third valve mechanism is located in the third mounting hole, at least a portion of the fourth valve mechanism is located in the fourth mounting hole, at least a portion of the first throttling mechanism is located in the fifth mounting hole, and at least a portion of the second throttling mechanism is located in the sixth mounting hole. The block unit includes a first interface, a second interface, a third interface, a fourth interface, a fifth interface, a sixth interface, a seventh interface, and an eighth interface. The fluid control device includes a first operating mode and a second operating mode. In the first operating mode, the first valve mechanism, the second valve mechanism, the third valve mechanism, the fourth valve mechanism, the fifth valve mechanism, the sixth valve mechanism, the fifth valve mechanism, the sixth valve mechanism, the seventh ... In the second operating mode, the third valve mechanism and the first throttling mechanism are open, the first interface, the first valve mechanism, and the second interface are connected, the fifth interface, the first throttling mechanism, and the sixth interface are connected, and the fourth interface, the third valve mechanism, and the third interface are connected. The fluid flow rate between the fifth interface and the sixth interface can be adjusted by adjusting the first throttling mechanism. In the second operating mode, the second valve mechanism, the fourth valve mechanism, the first throttling mechanism, and the second throttling mechanism are open, the first interface, the second valve mechanism, and the seventh interface are connected, the eighth interface, the second throttling mechanism, and the fourth interface are connected, the sixth interface, the first throttling mechanism, and the fifth interface are connected, and the second interface, the fourth valve mechanism, and the third interface are connected. The fluid flow rate between the fifth interface and the sixth interface can be adjusted by adjusting the first throttling mechanism, and the fluid flow rate between the eighth interface and the fourth interface can be adjusted by adjusting the second throttling mechanism.

[0005] This application also provides a vehicle thermal management system that can reduce the number of pipe connections in the system, comprising a compressor, a first heat exchanger, an intermediate heat exchanger, a second heat exchanger, a battery cooler, a gas cooler, and the aforementioned fluid control device. The first interface is connected to the outlet of the compressor, the second interface is connected to the inlet of the first heat exchanger, the third interface is connected to the inlet of the intermediate heat exchanger, the fourth interface is connected to the outlet of the second heat exchanger, the fifth interface is connected to the outlet of the intermediate heat exchanger, the sixth interface is connected to the inlet of the second heat exchanger, the seventh interface is connected to the inlet of the gas cooler, the eighth interface is connected to the outlet of the gas cooler, and the ninth interface is connected to the inlet of the battery cooler. Attached Figure Description

[0006] Figure 1 This is a perspective view of a first embodiment of the fluid control device of this application;

[0007] Figure 1A As shown Figure 1 A cross-sectional schematic diagram of a fluid control device;

[0008] Figure 1B As shown Figure 1 BB cross-sectional schematic diagram of the fluid control device;

[0009] Figure 2 An exploded view of one embodiment of the fluid control device of this application;

[0010] Figure 3 for Figure 1 A three-dimensional schematic diagram of a block unit in the fluid control device shown from one perspective;

[0011] Figure 4 for Figure 3 A front view diagram of a medium-sized block unit;

[0012] Figure 4A for Figure 4 A schematic cross-sectional view along the AA direction;

[0013] Figure 4B for Figure 4 A schematic cross-sectional view along the BB direction;

[0014] Figure 4C for Figure 4 A schematic cross-sectional view along the CC direction;

[0015] Figure 4D for Figure 4 A schematic cross-sectional view along the DD direction;

[0016] Figure 4E for Figure 4 A schematic cross-sectional view along the EE direction;

[0017] Figure 4F for Figure 4 A schematic cross-sectional view along the FF direction;

[0018] Figure 5 As shown Figure 3 A three-dimensional schematic diagram of each mounting hole and flow channel within the middle block unit from one perspective;

[0019] Figure 6 As shown Figure 3 A three-dimensional schematic diagram of each mounting hole and flow channel within the middle block unit in the first working mode;

[0020] Figure 7 As shown Figure 3 A three-dimensional schematic diagram of each mounting hole and flow channel within the middle block unit in the second working mode;

[0021] Figure 8 This is a perspective view of Embodiment 2 of the fluid control device of this application;

[0022] Figure 9 for Figure 8 A three-dimensional schematic diagram of a block unit in the fluid control device shown from one perspective;

[0023] Figure 10 for Figure 8 A three-dimensional schematic diagram of the block unit in the fluid control device shown from another perspective;

[0024] Figure 11 for Figure 9 A front view diagram of a medium-sized block unit;

[0025] Figure 11A for Figure 11 A schematic cross-sectional view along the AA direction;

[0026] Figure 11B for Figure 11 A schematic cross-sectional view along the BB direction;

[0027] Figure 11C for Figure 11 A schematic cross-sectional view along the CC direction;

[0028] Figure 11D for Figure 11 A schematic cross-sectional view along the DD direction;

[0029] Figure 11E for Figure 11 A schematic cross-sectional view along the EE direction;

[0030] Figure 11F for Figure 11 A schematic cross-sectional view along the FF direction;

[0031] Figure 12 As shown Figure 8 A three-dimensional schematic diagram of each mounting hole and flow channel within the middle block unit from one perspective;

[0032] Figure 13 As shown Figure 8 A three-dimensional schematic diagram of each mounting hole and flow channel within the middle block unit from a second perspective;

[0033] Figure 14 As shown Figure 8 A three-dimensional schematic diagram of each mounting hole and flow channel within the middle block unit in the first working mode;

[0034] Figure 15 This is a perspective view of Embodiment 3 of the fluid control device of this application;

[0035] Figure 16 for Figure 15 A three-dimensional schematic diagram of a block unit in the fluid control device shown from one perspective;

[0036] Figure 17 for Figure 15 A front view diagram of the medium block from one perspective;

[0037] Figure 17A for Figure 17 A schematic cross-sectional view along the AA direction;

[0038] Figure 18 for Figure 15 Another perspective view of the central block unit;

[0039] Figure 18A for Figure 18 A schematic cross-sectional view along the AA direction;

[0040] Figure 18B for Figure 18 A schematic cross-sectional view along the BB direction;

[0041] Figure 18C for Figure 18 A schematic cross-sectional view along the CC direction;

[0042] Figure 19 The diagram shown is a schematic of the vehicle thermal management system of this application. Detailed Implementation

[0043] The following description, in conjunction with the accompanying drawings, illustrates a specific embodiment of this application. In this context, "opening the valve" refers to the movement of the valve core relative to the valve port, allowing fluid to pass through. Figures 1-3 The fluid control device includes a block unit, a valve unit, and a drive unit. The block unit includes mounting holes corresponding to the valve units. The valve units are fixedly connected to or have a limiting connection with the block unit, and the drive unit is also fixedly connected to or has a limiting connection with the block unit. Fixed connections may include welding, adhesive bonding, threaded connections, etc., while limiting connections include snap-fit ​​and insert fittings. Each valve mechanism and each throttling mechanism is inserted into the block 100 and then welded to the block 100 for further reduction of internal leakage in the fluid control device. The drive unit includes a circuit board and multiple drive components, with the circuit board electrically connected to each drive component.

[0044] Specifically, such as Figures 1-3 As shown, the block unit includes a block 100, which can be a casting or forging. The block 100 includes mounting holes for mounting the valve unit, including a first mounting hole 110, a second mounting hole 120, a third mounting hole 130, a fourth mounting hole 140, a fifth mounting hole 150, and a sixth mounting hole 160. The valve unit includes a first valve mechanism 21, a second valve mechanism 22, a third valve mechanism 23, a fourth valve mechanism 24, a first throttling mechanism 25, and a second throttling mechanism 26. The first mounting hole 110, the second mounting hole 120, the third mounting hole 130, the fourth mounting hole 140, the fifth mounting hole 150, and the sixth mounting hole 160 all have openings for insertion of the corresponding valve mechanism or throttling mechanism. At least a portion of the first valve mechanism 21 is located in the first mounting hole 110, at least a portion of the second valve mechanism 22 is located in the first mounting hole 120, at least a portion of the third valve mechanism 23 is located in the third mounting hole 230, at least a portion of the fourth valve mechanism 24 is located in the fourth mounting hole 240, at least a portion of the first throttling mechanism 25 is located in the fifth mounting hole 250, and at least a portion of the second throttling mechanism 26 is located in the sixth mounting hole 260. The openings of the first mounting hole 110, second mounting hole 120, third mounting hole 130, fourth mounting hole 140, fifth mounting hole 150, and sixth mounting hole 160 all face the drive unit, meaning the openings face the same direction. This improves the space utilization of the block 100, makes the valve mechanisms and throttling mechanisms within the valve unit more compact, reduces the space occupied by the fluid control device, and also helps reduce the overall weight of the fluid control device.

[0045] In this embodiment, the block 100 has a cuboid structure, but this is not a limitation on the structure of the block 100. The block 100 includes a first interface 01, a second interface 02, a third interface 03, a fourth interface 04, a fifth interface 05, a sixth interface 06, a seventh interface 07, and an eighth interface 08. The third interface 03, the sixth interface 06, the eighth interface 08, and the ninth interface 09 are located on the same side of the block 100, defined as the first wall of the block 100; that is, the third interface 03, the sixth interface 06, the eighth interface 08, and the ninth interface 09 are located on the same side wall of the block 100 and their openings face the same direction. The second interface 02 and the fourth interface 04 are located on the same side of the block 100, defined as the third wall of the block 100; that is, the openings of the second interface 02 and the fourth interface 04 are both located on one side wall of the block 100 and face the same direction. Some of the above interfaces always function as inlets, some always as outlets, and some interfaces sometimes function as inlets and sometimes as outlets depending on the different operating modes of the fluid control device.

[0046] The fluid control device includes a first operating mode and a second operating mode. In the first operating mode, the first valve mechanism 21, the third valve mechanism 23, and the first throttling mechanism 25 are open, the first interface 01, the first valve mechanism 21, and the second interface 02 are connected, the fifth interface 05, the first throttling mechanism 25, and the sixth interface 06 are connected, and the fourth interface 04, the third valve mechanism 23, and the third interface 03 are connected. By adjusting the first throttling mechanism 25, the fluid flow rate between the fifth interface 05 and the sixth interface 06 can be adjusted. In the second working mode, the second valve mechanism 22, the fourth valve mechanism 24, the first throttling mechanism 25, and the second throttling mechanism 26 are opened, the first port 01, the second valve mechanism 22, and the seventh port 07 are connected, the eighth port 08, the second throttling mechanism 26, and the fourth port 04 are connected, the sixth port 06, the first throttling mechanism 25, and the fifth port 05 are connected, and the second port 02, the fourth valve mechanism 24, and the third port 03 are connected. By adjusting the first throttling mechanism 25, the fluid flow rate between the fifth port 05 and the sixth port 06 can be adjusted, and by adjusting the second throttling mechanism 26, the fluid flow rate between the eighth port 08 and the fourth port 04 can be adjusted.

[0047] In this embodiment, four valve mechanisms and two throttling mechanisms are installed on the block unit. The valves are not connected by pipelines, which can reduce the leakage points caused by pipeline connections. The integration is high and the assembly is convenient.

[0048] The structure of the block unit is described in further detail below, such as Figures 4-6As shown, the block 100 includes a first flow channel 1, a second flow channel 2, a third flow channel 3, a fourth flow channel 4, a fifth flow channel 5, a sixth flow channel 6, a seventh flow channel 7, an eighth flow channel 8, a ninth flow channel 9, a tenth flow channel 10, an eleventh flow channel 111, and a twelfth flow channel 12. The first flow channel 1 connects the first interface 01 and the second mounting hole 120. The second flow channel 2 connects the first mounting hole 110 and the second mounting hole 120. The third flow channel 3 connects the first mounting hole 110 and the fourth mounting hole 140. The fourth flow channel 4 connects the fourth mounting hole 140 and the second interface 02. The fifth flow channel 5 connects the fifth interface 05 and the fifth mounting hole 150. The sixth flow channel 06 connects the sixth interface 6 and the fifth mounting hole 150. The seventh flow channel 7 connects the third mounting hole 130 and the sixth mounting hole 160. The eighth flow channel 8... The third interface 03 is connected to the third mounting hole 130. The ninth flow channel 9 is connected to the seventh interface 7 and the second mounting hole 120. The tenth flow channel 10 is connected to the fourth interface 04 and the sixth mounting hole 160. The eleventh flow channel 11 is connected to the eighth interface 08 and the sixth mounting hole 160. The twelfth flow channel 12 is connected to the third mounting hole 130 and the fourth mounting hole 140.

[0049] The aforementioned block has a simple flow channel arrangement, as shown in the attached figure, and can be used to manufacture a fluid control device that meets the flow channel requirements without the need for extra process holes.

[0050] Furthermore, the fluid control device in this embodiment also includes a third throttling mechanism 27, and the mounting hole includes a seventh mounting hole 170. At least a portion of the third throttling mechanism 27 is located in the seventh mounting hole 170. The block 100 also includes a ninth interface 09. The fluid control device includes a third operating mode. In the third operating mode, the first valve mechanism 21 and the third throttling mechanism 27 are open, and the first interface 01, the first valve mechanism 21, and the second interface 02 are connected. By adjusting the third throttling mechanism 27, the fluid flow rate between the fifth interface 05 and the ninth interface 09 can be adjusted. This configuration increases the number of operating modes of the fluid control device without increasing the number of connecting pipelines.

[0051] In the specific flow channel design, the block includes a thirteenth flow channel 13 and a fourteenth flow channel 14. The thirteenth flow channel 13 connects the fifth mounting hole 150 and the seventh mounting hole 170, and the fourteenth flow channel 14 connects the ninth interface 09 and the seventh mounting hole 170.

[0052] In a further embodiment, the fluid control device also includes a fifth valve mechanism 28, and the mounting hole includes an eighth mounting hole 180. At least a portion of the fifth valve mechanism 28 is located in the eighth mounting hole 180. The fluid control device includes a fourth operating mode. In the fourth operating mode, the second valve mechanism 22, the fifth valve mechanism 28, and the third throttling mechanism 27 are open. The first interface 01 and the second valve mechanism 22 are connected to the seventh interface 07, and the eighth interface 08, the fifth valve mechanism 28, and the second interface 02 are connected. The fluid flow rate between the fifth interface 05 and the ninth interface 09 can be adjusted by regulating the third throttling mechanism 27. This configuration increases the number of operating modes of the fluid control device without increasing the number of connecting pipelines.

[0053] In the specific flow channel design, the block 100 includes a fifteenth flow channel 15 and a sixteenth flow channel 16. The fifteenth flow channel 15 connects the sixth mounting hole 160 and the eighth mounting hole 180, and the sixteenth flow channel 16 connects the second interface 02 and the eighth mounting hole 180.

[0054] Furthermore, in the embodiments given in this document, the block 21 is a single-piece structure (in this context, "single-piece" means not assembled by welding, bonding, or other splicing methods), which can minimize leakage points in the fluid control device. However, this does not preclude the block 21 from being composed of two or more parts joined together by welding or other methods, such as two cubes, two cuboids, or a cube and a cuboid combined, or composed of two or more regular or irregular parts. All of these should fall within the scope of the block in this application, because compared to a design with multiple pipeline connections, this can still reduce leakage in the entire fluid control device.

[0055] like Figure 1 and Figure 2As shown, in order to make the overall structure of the fluid control device as compact as possible and reduce the space occupied, in this embodiment, the valve mechanisms and throttling mechanisms in the valve unit are arranged in two rows on the block 100. The first valve mechanism 21, the second valve mechanism 22, the fourth valve mechanism 24, and the fifth valve mechanism 28 are located in one column. The first valve mechanism 21 and the fourth valve mechanism 24 are located between the second valve mechanism 22 and the fifth valve mechanism 28. The first valve mechanism 21 is closer to the second valve mechanism 22 than the fourth valve mechanism 24. The third throttling mechanism 27 and the third valve mechanism 23 are located between the first throttling mechanism 25 and the second throttling mechanism 26. The third throttling mechanism 27 is closer to the first throttling mechanism 25 than the third valve mechanism 23. The first flow channel 11 and the second flow channel 12 are coaxially arranged. The third flow channel 13, the fourth flow channel 14, and the sixteenth flow channel 16 are coaxially arranged. The fifth flow channel 15 and the thirteenth flow channel 13 are coaxially arranged. The seventh flow channel 17 and the tenth flow channel 10 are coaxially arranged. The eighth flow channel 8 and the twelfth flow channel 12 are coaxially arranged. The twelfth flow channel 12 is located between the third mounting hole 130 and the fourth mounting hole 140. The eleventh flow channel 11 and the fifteenth flow channel 15 are coaxially arranged. The fifteenth flow channel 15 is located between the sixth mounting hole 160 and the eighth mounting hole 180. The first interface 01, the first flow channel 11, the first mounting hole 110, and the second flow channel 12 are always connected. The third flow channel 13, the fourth mounting hole 140, the fourth flow channel 14, the eighth mounting hole 180, the sixth flow channel 16, and the second interface 02 are always connected. The third mounting hole 130, the seventh flow channel 17, the sixth mounting hole 160, and the fourth interface 04 are always connected. Each flow channel is a circular channel, which is convenient for processing.

[0056] In this embodiment of the fluid control device, the surface where the opening of each of the mounting holes is located is defined as the first surface. The ninth flow channel 9, the third flow channel 3, the fourth flow channel 4, and the sixteenth flow channel 16 are arranged parallel to the first flow channel 1 and the second flow channel 2. The first flow channel 1 is closer to the first surface than the ninth flow channel 9. The fifth flow channel 5, the eighth flow channel 8, the eleventh flow channel 11, the twelfth flow channel 12, the thirteenth flow channel 13, and the fifteenth flow channel 15 are closer to the first surface than the sixth flow channel 6, the seventh flow channel 7, the tenth flow channel 10, and the fourteenth flow channel 14.

[0057] The above-mentioned flow channels, Figure 2 In the vertical direction of the block shown, the flow channels within the block are arranged in two layers. The first flow channel 1, the second flow channel 2, the fifth flow channel 5, the eighth flow channel 8, the eleventh flow channel 11, the twelfth flow channel 12, the thirteenth flow channel 13, and the fifteenth flow channel 15 are located in the first layer, that is, the layer closest to the openings of each mounting hole. The third flow channel 3, the fourth flow channel 4, the sixth flow channel 6, the seventh flow channel 7, the ninth flow channel 9, the tenth flow channel 10, the fourteenth flow channel 14, and the sixteenth flow channel 16 are located in the second layer, that is, the layer below the first layer.

[0058] The drive unit includes a housing 31, a drive section that cooperates with each valve mechanism and each throttling mechanism in the valve unit, a circuit board 33, and a cover 34. The housing 31 is welded and fixed to the block 100. The drive section is located inside the housing 31. The circuit board 33 is electrically connected and / or signal connected to the wiring terminals. The wiring terminals are used to input electrical signals supplied to the fluid control device and / or control signals from the host computer and / or control signals fed back to the host computer. The circuit board 33 can be a rigid circuit board, such as a paper-based copper-clad laminate or a metal-based copper-clad laminate. The circuit board 33 can also be a flexible circuit board, such as a highly reliable and flexible printed circuit board made of polyimide or polyester film as the substrate. The drive section includes a first drive section 321, a second drive section 322, a third drive section 323, a fourth drive section 324, a fifth drive section 325, a sixth drive section 326, a seventh drive section 327, and an eighth drive section 328. The first drive unit 321 drives the first valve mechanism 21, the second drive unit 322 drives the second valve mechanism 22, the third drive unit 323 drives the third valve mechanism 23, the fourth drive unit 24 drives the fourth valve mechanism 24, the fifth drive unit 325 drives the first throttling mechanism 25, the sixth drive unit 326 drives the second throttling mechanism 26, the sixth drive unit 327 drives the third throttling mechanism 27, and the eighth drive unit 328 drives the fourth valve mechanism 28. Each drive unit is at least partially located within the housing 31, and each drive unit is injection molded to the housing 31; that is, the housing 31 is injection molded out during the injection molding connection process of each drive unit. Furthermore, the wiring terminals are also injection molded and fixed together with each wiring unit, simplifying the assembly process, ensuring reliable connection, and providing relatively good sealing. Of course, the housing 31 may not be injection molded with each drive unit. In this case, the housing 31 is an independent entity not fixed to each drive unit. The drive units can be fixed by injection molding or not. The advantage of fixing the drive units by injection molding is that it connects the drive units into a whole. When connecting with the valve unit, the assembly of the drive unit and the valve unit does not need to be done multiple times, resulting in high assembly efficiency. After each drive unit is electrically connected to the circuit board 31, the drive unit is confined within the housing 31 by the cooperation of the cover 34, the housing 31, and the block 100. The housing 31 and the block 100 can be fixed by welding or bonding, and the housing 31 and the cover 34 can be fixed by welding or bonding. When the host computer sends a control signal, the circuit board 33 can convert the control signal into a drive signal to drive the aforementioned drive units or parts of the drive units to operate. When the host computer sends a system signal, the circuit board 33 sends a control signal according to the system signal and converts it into a drive signal to drive the aforementioned drive units or parts of the drive units to operate. In the above structure, each drive unit is electrically connected to a terminal block via a circuit board 33. The system only needs to be connected to a set of wiring harnesses, which reduces the number of wiring harnesses and makes the structure of the fluid control device more compact, while also saving material costs.

[0059] During assembly, each drive unit can be simultaneously assembled with the corresponding valve mechanism or throttling mechanism, such that the first drive unit 321 is fitted onto the outer periphery of the first valve mechanism 21 to drive the first valve mechanism 21 to operate, the second drive unit 322 is fitted onto the outer periphery of the second valve mechanism 22 to drive the second valve mechanism 22 to operate, and the third drive unit 323... The third valve mechanism 26 is driven to operate by a drive unit 324 fitted onto the outer periphery of the third valve mechanism 23. The fourth drive unit 324 is driven to operate by a drive unit 325 fitted onto the outer periphery of the first throttling mechanism 25. The sixth drive unit 326 is driven to operate by a drive unit 326 fitted onto the outer periphery of the second throttling mechanism 26. The seventh drive unit 327 is driven to operate by a drive unit 327 fitted onto the outer periphery of the third throttling mechanism 27. The eighth drive unit 328 is driven to operate by a drive unit 328 fitted onto the outer periphery of the fifth valve mechanism 28. The circuit board 33 is located on the upper side of each drive unit. The circuit board 33 is provided with through holes 331 corresponding to the total number of valve mechanisms and throttling mechanisms in the valve unit. Each through hole 331 is fitted onto the outer periphery of each valve mechanism and each throttling mechanism, that is, each valve mechanism and each throttling mechanism passes through the corresponding through hole. Each drive unit is electrically connected to the circuit board 33 through a pin on it. Figure 2 only shows the outline of circuit board 33, and the circuit layout on it can have various designs. Of course, circuit board 33 may not have the aforementioned through hole 331, which is also possible. However, when it has through hole 331, the fluid control device can be positioned longitudinally (i.e., Figure 1 At the position shown, the dimensions of the fluid control device (vertical direction) are reduced, making the structure of the fluid control device more compact.

[0060] The circuit board 33 may include a first control unit, a second control unit, a third control unit, a fourth control unit, a fifth control unit, a sixth control unit, a seventh control unit, an eighth control unit, a first drive unit, a second drive unit, a third drive unit, a fourth drive unit, a fifth drive unit, a sixth drive unit, a seventh drive unit, and an eighth drive unit. The first control unit sends a first control signal to the first drive unit, and the first drive unit controls the current through the first drive section 321 to change according to a set rule. The second control unit sends a second control signal to the second drive unit, and the second drive unit controls the current through the second drive section 322 to change according to a set rule. The third control unit sends a third control signal to the third drive unit, and the third drive unit controls the current through the third drive section 323 to change according to a set rule. The fourth control unit sends a first control signal to the fourth drive unit, and the fourth drive unit controls the current through the fourth drive section 324 to change according to a set rule. The fifth control unit sends a fifth control signal to the fifth drive unit, and the fifth drive unit controls the current through the fifth drive section 325 to change according to a set rule. The sixth control unit sends a sixth control signal to the sixth drive unit, and the sixth drive unit controls the current through the sixth drive section 326 to change according to a set rule. The seventh control unit sends a seventh control signal to the seventh drive unit, and the seventh drive unit controls the current through the seventh drive section 327 to change according to a set rule. The eighth control unit sends an eighth control signal to the eighth drive unit, and the sixth drive unit controls the current through the sixth drive section 328 to change according to a set rule.

[0061] In the above embodiments, each valve mechanism can be a switching valve, such as an electrically operated ball valve, which does not control flow regulation; each throttling mechanism can be an electronic expansion valve, which regulates the flow rate of the fluid. For better understanding, the following diagram illustrates the cooperation between the valve mechanisms and throttling mechanisms and the flow channels.

[0062] The first valve mechanism 21, the second valve mechanism 22, the third valve mechanism 23, the fourth valve mechanism 24, and the fifth valve mechanism 28 are electric ball valves that function as shut-off valves to control the connection or disconnection of relevant flow channels. The first throttling mechanism 25, the second throttling mechanism 26, and the third throttling mechanism 27 are electronic expansion valves that control the flow rate of fluid passing through the corresponding valve ports.

[0063] The first valve mechanism 21 includes a first valve seat 210 having a first valve port 2110; the second valve mechanism 22 includes a second valve seat 220 having a second valve port 2220; the third valve mechanism 23 includes a third valve seat 230 having a third valve port 2330; the fourth valve mechanism 24 includes a fourth valve seat 240 having a fourth valve port 2440; the fifth valve mechanism 28 includes a fifth valve seat 280 having a fifth valve port 2880; the first throttling mechanism 25 includes a fifth valve seat 250 having a fifth valve port 2550; the second throttling mechanism 26 includes a sixth valve seat 260 having a sixth valve port 2660; the third throttling mechanism 27 includes a seventh valve seat 270 having a seventh valve port 2770; and the eighth valve mechanism 28 includes an eighth valve seat 280 having an eighth valve port 2880. The first valve seat 210 is at least partially located in the first mounting hole 110, the second valve seat 220 is at least partially located in the second mounting hole 120, the third valve seat 230 is at least partially located in the third mounting hole 130, the fourth valve seat 240 is at least partially located in the fourth mounting hole 140, the fifth valve seat 250 is at least partially located in the fifth mounting hole 150, the sixth valve seat 260 is at least partially located in the sixth mounting hole 160, the seventh valve seat 270 is at least partially located in the seventh mounting hole 170, the eighth valve seat 280 is at least partially located in the eighth mounting hole 180, and the first valve core 2101 is partially located in the first mounting hole 110 of the first valve seat 210. The valve seat cavity is at least partially located in the second valve seat cavity of the second valve seat 220; the third valve core 2301 is partially located in the third valve seat cavity of the third valve seat 230; the fourth valve core 2401 is at least partially located in the fourth valve seat cavity of the fourth valve seat 240; the fifth valve core 2501 is at least partially located in the fifth valve seat cavity of the fifth valve seat 250; the sixth valve core 2601 is at least partially located in the sixth valve seat cavity of the sixth valve seat 260; the seventh valve core 2701 is at least partially located in the seventh valve seat cavity of the seventh valve seat 270; and the eighth valve core 2801 is at least partially located in the eighth valve seat cavity of the eighth valve seat 280.

[0064] The wall of the first valve seat 210 includes a first connecting hole 2102. The second flow channel 2, the first connecting hole 2102, and the first valve seat cavity are always connected. The first valve core 2101 is away from the first valve port 2110. The first valve seat cavity is connected to the third flow channel 3. The wall of the second valve seat 220 includes a second connecting hole 2202. The first flow channel 1, the second connecting hole 2202, the second valve seat cavity, and the second flow channel 2 are always connected. The second valve core 2201 is away from the second valve port 2220. The first flow channel 1 is connected to the ninth flow channel 9. The third valve seat 230 is connected to the wall of the third valve seat 230, which includes a third connecting hole 2302. The eighth flow channel 8, the third connecting hole 2302, the third valve seat cavity, and the twelfth flow channel 12 are always connected. The third valve core 2301 is away from the third valve port. The seventh flow channel 7 is connected to the eighth flow channel 8. The fourth valve seat 240 is connected to the wall of the fourth valve seat 240, which includes a fourth connecting hole 2401. The twelfth flow channel 12, the fourth connecting hole 2401, and the fourth valve seat cavity are always connected. The fourth valve core 2401 is away from the fourth valve port 2440. The fourth flow channel 7 is connected to the tenth flow channel 8. The second flow channel 12 is connected. The wall of the fifth valve seat 250 includes a fifth connecting hole 2501. The fifteenth flow channel 15, the fifth connecting hole 2501, and the fifth valve seat cavity are always connected. The fifth valve core 2501 is away from the fifth valve port. The sixteenth flow channel 16 is connected to the fifteenth flow channel 15. The wall of the sixth valve seat 260 includes a sixth connecting hole 2601. The fifth flow channel 5, the sixth connecting hole 2601, the sixth valve seat cavity, and the thirteenth flow channel 13 are always connected. The sixth valve core 2601 is away from the sixth valve port 2660. The fifth flow channel 5 is connected to the sixth flow channel 6. The wall of the seventh valve seat 271 includes the seventh connecting hole 2701. The eleventh flow channel 11, the seventh connecting hole 2701, the seventh valve seat cavity, and the fifteenth flow channel 15 are always connected. The seventh valve core 2701 is away from the seventh valve port 2770. The eleventh flow channel 11 is connected to the tenth flow channel 10. The wall of the eighth valve seat 280 includes the eighth connecting hole 2801. The thirteenth flow channel 13, the eighth connecting hole 2801, and the eighth valve seat cavity are always connected. The eighth valve core 2880 is away from the eighth valve port. The fifteenth flow channel 15 is connected to the sixteenth flow channel 16.

[0065] In this embodiment of the fluid control device, each valve is integrated and installed in the block 100, which has a high degree of integration. The flow channel design within the block 100 means that the block does not have additional process holes, making it easy to process and eliminating leakage problems caused by process holes or pipe connections. In addition, each drive unit is injection molded and connected, resulting in high connection reliability. Furthermore, the housing is integrally injection molded during the injection molding process, so that no other parts are added to the housing. Moreover, no additional assembly process is required between each drive unit and the housing, making the assembly of the entire control device convenient.

[0066] In the first operating mode of the fluid control device of this embodiment, the first interface 01, the first flow channel 1, the second flow channel 2, the third flow channel 3, the fourth flow channel 4, the fifth flow channel 5, the sixteenth flow channel 16, and the second interface 02 are connected; the fifth interface 05, the fifth flow channel 5, the sixth flow channel 6, and the sixth interface 06 are connected; and the fourth interface 04, the tenth flow channel 10, the seventh flow channel 7, the eighth flow channel 8, and the third interface 03 are connected. In the second operating mode, the first interface 01, the first flow channel 1, the ninth flow channel 9, and the seventh interface 07 are connected; the fifth interface 05, the fifth flow channel 5, the sixth flow channel 6, and the sixth interface 06 are connected; the second interface 02, the sixteenth flow channel 16, the fourth flow channel 4, the twelfth flow channel 12, the eighth flow channel 8, and the third interface 03 are connected; and the eighth interface 08, the eleventh flow channel 11, the tenth flow channel 10, and the fourth interface 04 are connected. In the third operating mode, the first interface 01, the first flow channel 1, the second flow channel 2, the third flow channel 3, the fourth flow channel 4, the sixteenth flow channel 16, and the second interface 02 are connected; the fifth interface 05, the fifth flow channel 5, the thirteenth flow channel 13, the fourteenth flow channel 14, and the ninth interface 09 are connected. In the fourth operating mode, the first interface 01, the first flow channel 1, the ninth flow channel 9, and the seventh interface 07 are connected; the eighth interface 08, the eleventh flow channel 11, the fifteenth flow channel 15, the sixteenth flow channel 16, and the second interface 02 are connected; the fifth interface 05, the fifth flow channel 5, the thirteenth flow channel 13, the fourteenth flow channel 14, and the ninth interface 09 are connected.

[0067] The following is combined with Figure 8 and Figure 14 A second embodiment of the fluid control device of this application will be described.

[0068] like Figure 8 As shown, compared to Embodiment 1, the structure of the drive unit remains unchanged, as do the structures of the valve mechanisms and throttling mechanisms. The difference lies in the changes to the interfaces and flow channels of the block unit 100A, and the corresponding arrangement of the valve mechanisms and throttling mechanisms. In this embodiment, the cooperation between the mounting holes and the valve mechanisms and throttling mechanisms is the same as in Embodiment 1, and will not be repeated here. The following focuses on the differences between this embodiment and Embodiment 1, namely the positions of the interfaces of the block unit and the arrangement of the internal flow channels. The structures of the drive unit and valve units in Embodiment 1 are referenced in this embodiment.

[0069] like Figures 8-10 As shown, the fifth valve mechanism 28 and the third throttling mechanism 27 are located between the first throttling mechanism 25 and the second throttling mechanism 26. The third throttling mechanism 27 is closer to the first throttling mechanism 25 than the fifth valve mechanism 28. The first valve mechanism 21 and the fourth valve mechanism 24 are located between the second valve mechanism 22 and the third valve mechanism 23. The first valve mechanism 21 is closer to the second valve mechanism 22 than the fourth valve mechanism 24.

[0070] The block unit includes block 100A, which includes a first interface 01, a second interface 02, a third interface 03, a fourth interface 04, a fifth interface 05, a sixth interface 06, a seventh interface 07, an eighth interface 08, and a ninth interface 09. Specifically, the second interface 02 and the seventh interface 07 are located on the same side of block 100A and are defined as the first wall of block 100A; that is, the second interface 02 and the seventh interface 07 are located on the same side wall of block 100A and their openings face the same direction. The first interface 01 and the fifth interface 05 are located on the same side of block 100A and are defined as the second wall of block 100A; that is, the openings of the first interface 01 and the fifth interface 05 are both located on the same side wall of block 100A and their openings face the same direction. The third interface 03 and the eighth interface 08 are located on the same side of block 100A and are defined as the third wall of block 100A; that is, the openings of the third interface 03 and the eighth interface 08 are both located on one side wall of block 100A and their openings face the same direction. The fourth interface 04, the sixth interface 06, and the ninth interface 09 are located on the same side wall of block 100A, defined as the fourth wall of block 100A. That is, the openings of the fourth interface 04, the sixth interface 06, and the ninth interface 09 are all located on one side wall of block 100A and face the same direction. Of these interfaces, some always function as inlets, some always as outlets, and some sometimes function as inlets and sometimes as outlets depending on the different operating modes of the fluid control device.

[0071] Block 100A includes a first flow channel 1A, a second flow channel 2A, a third flow channel, a fourth flow channel 4A, a fifth flow channel 5A, a sixth flow channel, a seventh flow channel 7A, an eighth flow channel 8A, a ninth flow channel 9A, a tenth flow channel 10A, an eleventh flow channel 11A, a twelfth flow channel 12A, a thirteenth flow channel 13A, a fourteenth flow channel 14A, and a fifteenth flow channel 15A. The first flow channel 1A connects the first interface 01 and the second mounting hole 120. The second flow channel 2A connects the first mounting hole 110 and the second mounting hole 120. The third flow channel 3A connects the first mounting hole 110 and the fourth mounting hole 140, and also connects the first mounting hole 110 and the eighth mounting hole 180. The fourth flow channel 4A connects the fifth mounting hole 150 and the fifth interface 05. The fifth flow channel 5A... The sixth interface 06 connects to the fifth mounting hole 150; the sixth flow channel 6A connects to the sixth mounting hole 160 and the third mounting hole 130; the seventh flow channel 7A connects to the third mounting hole 130 and the third interface 03; the eighth flow channel 8A connects to the seventh interface 07 and the second mounting hole 120; the ninth flow channel 9A connects to the fourth interface 04 and the sixth mounting hole 160; the tenth flow channel 10A connects to the eighth interface 05 and the sixth mounting hole 160; the eleventh flow channel 11A connects to the third mounting hole 130 and the sixth mounting hole 160; the twelfth flow channel 12A connects to the fifth mounting hole 120 and the seventh mounting hole 170; the thirteenth flow channel 13A connects to the ninth interface 09 and the seventh mounting hole 170; the fourteenth flow channel 14A connects to the sixth mounting hole 160 and the eighth mounting hole 180; and the fifteenth flow channel 15A connects to the second interface 02 and the first mounting hole 110.

[0072] The fluid control device in this embodiment has the same function as the fluid control device in Embodiment 1, and can also realize the first and second working modes, and further realize the third and fourth working modes. The flow channel arrangement of its block 100A meets the flow channel requirements. Compared with the block unit in Embodiment 1, the block 100A in this embodiment has increased the following... Figure 11-11F The six process holes shown (a, b, c, d, e, and f) need to be sealed to prevent leakage.

[0073] like Figures 11-11F and Figures 12-14As shown, in this embodiment, the first flow channel 1A is located between the first interface 01 and the second mounting hole 120, the second flow channel 2A is located between the first mounting hole 110 and the second mounting hole 120, the first flow channel 1A and the second flow channel 2A are coaxially arranged, the seventh flow channel 7A is located between the third interface 03 and the third mounting hole 130, the seventh flow channel 7A and the eleventh flow channel 11A are coaxially arranged, the fourth flow channel 4A is located between the fifth interface 05 and the fifth mounting hole 150, the twelfth flow channel 12A is located between the fifth mounting hole 150 and the seventh mounting hole 170, the fourth flow channel 4A and the twelfth flow channel 12A are coaxially arranged and parallel to the first flow channel 1A. The tenth flow channel 10A is located between the eighth interface 08 and the sixth mounting hole 160, and the fourteenth flow channel 14A is located between the sixth mounting hole 160 and the eighth mounting hole 180. The tenth flow channel 10A and the fourteenth flow channel 14A are coaxially arranged. Within the block 100A, the fifth mounting hole 150, the seventh mounting hole 170, the eighth mounting hole 180, and the sixth mounting hole 160 are defined as arranged in the first column, and the second mounting hole 120, the first mounting hole 110, the fourth mounting hole 140, and the third mounting hole 130 are defined as arranged in the second column. The third flow channel and the sixth flow channel are located in the space between the first column of mounting holes and the second column of mounting holes.

[0074] like Figures 12-14 and Figure 16 As shown, the third flow channel includes a first branch 311, a second branch 312, a third branch 313, a fourth branch 314, and a fifth branch 315. The first branch 311 is perpendicular to the first flow channel 1A and extends from the first mounting hole 110 toward the seventh mounting hole 170. The second branch 312 extends from the end of the first branch 311 away from the first mounting hole 170 toward the second wall of the block 100A to a position between the fourth mounting hole 140 and the eighth mounting hole 180. The third branch 313 is parallel to the first flow channel 1A and extends from the eighth mounting hole 180 toward the fourth mounting hole 140 to communicate with the second branch 312. The fifth branch 315 is perpendicular to the second branch 312 and the third branch 313, and the fourth branch 314 is parallel to the first flow channel 1A. The fourth branch 314 extends from the fourth mounting hole 140 towards the eighth mounting hole 180 to connect with the fifth branch 315. Figure 14 As shown, the central axes of the first branch 311, the second branch 312 and the third branch 313 are located in the same plane. The central axis of the fourth branch 314 is closer to the upper surface of the block 100A than the central axes of the first branch 311, the second branch 312 and the third branch 313, that is, closer to the surface where the openings of each mounting hole are located.

[0075] The sixth flow channel includes a first branch channel 611, a second branch channel 612, and a third branch channel 613. The first branch channel 611 extends from the third mounting hole 130 toward the sixth mounting hole 160, and the third branch channel 613 extends from the sixth mounting hole 160 toward the third mounting hole 130. The third branch channel 130 is parallel to the fifth branch 315 and perpendicular to the first branch channel 611 and the second branch channel 612.

[0076] The flow channel layout of block 100A makes full use of the internal space of block 100A, making the flow channel arrangement within block 100A compact and saving the space occupied by block 100A.

[0077] In the first operating mode of the fluid control device of this embodiment, the first interface 01, the first flow channel 1A, the second flow channel 2A, the fifteenth flow channel 15A, and the second interface 02 are connected; the fifth interface 05, the fifth flow channel 5A, the sixth flow channel 6A, and the sixth interface 06 are connected; and the fourth interface 04, the ninth flow channel A, the sixth flow channel 6A, the seventh flow channel 7A, and the third interface 03 are connected. In the second operating mode, the first interface 01, the first flow channel 1A, the eighth flow channel 8A, and the seventh interface 07 are connected; the eighth interface 08, the tenth flow channel 10A, the ninth flow channel 9A, and the fourth interface 04 are connected; and the sixth interface 06, the third flow channel, the eleventh flow channel 11A, the seventh flow channel 7A, and the third interface 03 are connected. In the third operating mode, the first interface 01, the first flow channel 1A, the second flow channel 2A, the fifteenth flow channel 15A, and the second interface 02 are connected; and the fifth interface 05, the fifth flow channel 5A, the twelfth flow channel 12A, the thirteenth flow channel 13A, and the ninth interface 09 are connected. In the fourth operating mode, the first interface 01, the first flow channel 1A, the eighth flow channel 8A, and the seventh interface 07 are connected; the second interface 02, the fifteenth flow channel 15A, the third flow channel, the fourteenth flow channel 14A, the tenth flow channel 10A, and the eighth interface 08 are connected; and the fifth interface 05, the fifth flow channel 5A, the twelfth flow channel 12A, the thirteenth flow channel 13A, and the ninth interface 09 are connected.

[0078] The following is combined with Figure 15 and Figure 18 c. A second embodiment of the fluid control device of this application will be described.

[0079] As shown in the figure, compared with Embodiment 2, the structure of the drive unit in Embodiment 3 remains unchanged, as do the structures of each valve mechanism and each throttling mechanism. The difference lies in the changes to the interfaces and flow channels of the block unit 100A. In this embodiment, the cooperation between each mounting hole and each valve mechanism and each throttling mechanism is the same as in Embodiment 1, and will not be repeated here. The following focuses on the differences between this embodiment and Embodiment 2, namely the positions of each interface of the block unit and the arrangement of each flow channel inside. The structures of the drive unit and valve unit in Embodiment 1 are referenced in this embodiment.

[0080] As shown in the figure, the block unit includes block 100B, which includes a first interface 01, a second interface 02, a third interface 03, a fourth interface 04, a fifth interface 05, a sixth interface 06, a seventh interface 07, an eighth interface 08, and a ninth interface 09. The fourth interface 04 and the seventh interface 07 are located on the same side of block 100B and are defined as the first wall of block 100B; that is, the fourth interface 04 and the seventh interface 07 are located on the same side wall of block 100B and their openings face the same direction. The first interface 01 and the fifth interface 05 are located on the same side of block 100B and are defined as the second wall of block 100B; that is, the first interface 01, the fifth interface 05, and their openings are all located on the same side wall of block 100B and their openings face the same direction. The second interface 02, the third interface 03, and the eighth interface 08 are located on the same side of block 100B, defined as the third wall of block 100B. That is, the openings of the second interface 02, the third interface 03, and the eighth interface 08 are all located on one side wall of block 100B and face the same direction. The sixth interface 06 and the ninth interface 09 are located on the same side wall of block 100B, defined as the fourth wall of block 100B. That is, the openings of the sixth interface 06 and the ninth interface 09 are both located on one side wall of block 100B and face the same direction. Of the above interfaces, some always function as inlets, some always as outlets, and some sometimes function as inlets and sometimes as outlets depending on the different operating modes of the fluid control device.

[0081] Block 100B includes a first flow channel 1B, a second flow channel 2B, a third flow channel, a fourth flow channel 4B, a fifth flow channel 5B, a sixth flow channel, a seventh flow channel 7, an eighth flow channel 8B, a ninth flow channel 9B, a tenth flow channel 10B, an eleventh flow channel 11B, a twelfth flow channel 12B, a thirteenth flow channel 13B, a fourteenth flow channel 14B, a fifteenth flow channel 15B, a sixteenth flow channel 16B, and a seventeenth flow channel 17B. The first flow channel 1B... The first interface 01 is connected to the second mounting hole 120; the second flow channel 2B is connected to the first mounting hole 110 and the second mounting hole 120; the third flow channel 3B is connected to the first mounting hole 110 and the fourth mounting hole 140; the fourth flow channel 4B is connected to the third mounting hole 130 and the fourth mounting hole 140; the fifth flow channel 5B is connected to the second interface 02 and the third mounting hole 130; the sixth flow channel 6B is connected to the fifth mounting hole 150 and the sixth interface 06; the seventh flow channel 7B is connected to the fifth mounting hole 150 and the fifth interface 05; the eighth flow channel 8B is connected to the fourth interface 04 and the third mounting hole 130; the ninth flow channel 9B is connected to the third interface 03 and the third mounting hole 130. The tenth flow channel 10B connects the seventh interface 07 and the second mounting hole 120; the eleventh flow channel 11B connects the third mounting hole 130 and the fourth mounting hole 140; the twelfth flow channel 12B connects the eighth interface 08 and the sixth mounting hole 160; the thirteenth flow channel 13B connects the third mounting hole 130 and the sixth mounting hole 160; the fourteenth flow channel 14B connects the fifth mounting hole 150 and the seventh mounting hole 170; the fifteenth flow channel 15B connects the ninth interface 09 and the seventh mounting hole 170; the sixteenth flow channel 16B connects the sixth mounting hole 160 and the eighth mounting hole 180; and the seventeenth flow channel 17B connects the fourth mounting hole 140 and the eighth mounting hole 180.

[0082] The fluid control device in this embodiment has the same function as the fluid control device in embodiment two. It can also realize the first working mode and the second working mode, and further realize the third working mode and the fourth working mode. The flow channel arrangement of its block 100B meets the flow channel requirements. Compared with the block unit in embodiment two, the block 100B in this embodiment has a process hole k, which is sealed to prevent leakage.

[0083] As shown in the figure, in this embodiment, the first flow channel 1B is located between the first interface 01 and the second mounting hole 120, the second flow channel 2B is located between the first mounting hole 110 and the second mounting hole 120, and the first flow channel 1B and the second flow channel 2B are coaxially arranged. The third flow channel 3B is located between the first mounting hole 110 and the fourth mounting hole 140, the fourth flow channel 4B is located between the third mounting hole 130 and the fourth mounting hole 140, and the third flow channel 3B is coaxially arranged with the fourth flow channel 4B and the fifth flow channel 5B. The eleventh flow channel 11 is located between the third mounting hole 130 and the fourth mounting hole 140, and is located above the fourth flow channel 4B, that is, the fourth flow channel 4B and the eleventh flow channel 11B are parallel. The seventh flow channel 7B, the fourteenth flow channel 14B, the sixteenth flow channel 16B, and the twelfth flow channel 12B are coaxially arranged. The sixth flow channel 6B and the tenth flow channel 10B are arranged coaxially, while the ninth flow channel 9B, the seventeenth flow channel 17B, and the thirteenth flow channel 13B are arranged in parallel.

[0084] Within the entire block unit, the flow channels are generally distributed in two layers within block 100B. The first flow channel 1B, the second flow channel 2B, the seventh flow channel 7B, the ninth flow channel 9B, the eleventh flow channel 11B, the twelfth flow channel 12B, the fourteenth flow channel 14B, and the sixteenth flow channel 16B are located in the first layer, while the third flow channel 3B, the fourth flow channel 4B, the fifth flow channel 5B, the sixth flow channel 6B, the eighth flow channel 8B, the tenth flow channel 10B, the thirteenth flow channel 13B, the fifteenth flow channel 15B, and the seventeenth flow channel 17B are located in the second layer.

[0085] The flow channel layout of block 100B makes full use of the internal space of block 100B, making the flow channel arrangement within block 100B compact and saving the space occupied by block 100B.

[0086] In the first operating mode of the fluid control device of this embodiment, the first interface 01, the first flow channel 1B, the second flow channel 2B, the third flow channel 3B, the fourth flow channel 4B, the fifth flow channel 5B, and the second interface 02 are connected; the fifth interface 05, the seventh flow channel 7B, the sixth flow channel 6B, and the sixth interface 06 are connected; and the fourth interface 04, the eighth flow channel 8B, the fifth flow channel 5B, and the third interface 03 are connected. In the second operating mode, the first interface 01, the first flow channel 1B, the tenth flow channel 10B, and the seventh interface 07 are connected; the eighth interface 08, the twelfth flow channel 12B, the thirteenth flow channel 13B, the eighth flow channel 8B, and the fourth interface 04 are connected; the fifth interface 05, the seventh flow channel 7B, the sixth flow channel 6B, and the sixth interface 06 are connected; and the second interface 02, the fifth flow channel 5B, the fourth flow channel 4B, the eleventh flow channel 11B, the ninth flow channel 9B, and the third interface 03 are connected. In the third operating mode, the first interface 01, the first flow channel 1B, the second flow channel 2B, the third flow channel 3B, the fourth flow channel 4B, the fifth flow channel 5B, and the second interface 02 are connected; the fifth interface 05, the seventh flow channel 7B, the fourteenth flow channel 14B, and the fifteenth flow channel 15B are connected. In the fourth operating mode, the first interface 01, the first flow channel 1B, the tenth flow channel 10B, and the seventh interface 07 are connected; the eighth interface 08, the twelfth flow channel 12B, the sixteenth flow channel 16B, the seventeenth flow channel 17B, the fourth flow channel 4B, the fifth flow channel 5B, and the second interface 02 are connected. Among these, the fourth flow channel 4B, the third mounting hole 130, the fourth mounting hole 140, and the seventeenth flow channel 17B are always connected; the fourth flow channel 4B and the thirteenth flow channel 13B are always connected; and the fourth flow channel 4B and the eleventh flow channel 11B are connected or disconnected through the fourth valve mechanism 24.

[0087] The vehicle thermal management system includes a compressor 30, a first heat exchanger 20, an intermediate heat exchanger 10, a second heat exchanger 50, a battery cooler 60, a gas cooler 40, and the fluid control device of this application.

[0088] The first interface of the fluid control device is connected to the outlet of the compressor 30, the second interface is connected to the inlet of the first heat exchanger 20, the third interface is connected to the inlet of the intermediate heat exchanger 10, the fourth interface is connected to the outlet of the second heat exchanger 50, the fifth interface is connected to the outlet of the intermediate heat exchanger 10, the sixth interface is connected to the inlet of the second heat exchanger 50, the seventh interface is connected to the inlet of the gas cooler 40, the eighth interface is connected to the outlet of the gas cooler 40, and the ninth interface is connected to the inlet of the battery cooler 60.

[0089] The vehicle thermal management system can achieve four cooling modes. The following description uses the fluid control device shown in Embodiment 1 as an example to illustrate the operating modes of the vehicle thermal management system. In cooling mode 1, the fluid control device can operate in the first mode, and the fluid flow direction of the vehicle thermal management system is as follows: Figure 19As shown, the flow path of at least part of the refrigerant flowing into the block from the first interface is as follows: first interface 01, first heat exchanger 20, intermediate heat exchanger 10, fifth interface 05, sixth interface 06, second heat exchanger 50, fourth interface 04, third interface 03, intermediate heat exchanger 10, and then back to the compressor 30 to complete a refrigeration cycle.

[0090] In cooling mode 2, the fluid control device can operate in a third mode, and the fluid flow direction of the vehicle thermal management system is as follows: Figure 19 As shown, the flow path of at least a portion of the refrigerant flowing into the block from the first interface is as follows: first interface 01, second interface 02, first heat exchanger 20, intermediate heat exchanger 10, battery cooler 60, and then the intermediate heat exchanger 10 returns to the compressor 30 to complete a refrigeration cycle.

[0091] The cooling cycle in Cooling Mode 1 is used to cool the air inside the vehicle, while the cooling cycle in Cooling Mode 2 is used to cool the battery in the vehicle's thermal management system.

[0092] The aforementioned fluid control device and vehicle thermal management system effectively reduce the number of pipe connections in the system, minimize leakage points, and have a high degree of integration.

[0093] When the system requires heating, the fluid control device can operate in a second mode, and the fluid flow direction of the vehicle thermal management system is as follows: Figure 19 As shown, the flow path of at least a portion of the refrigerant flowing into the block 100 from the first interface 01 is as follows: first interface 01, seventh interface 07, gas cooler 40, eighth interface 08, fourth interface 04, sixth interface 06, fifth interface 05, intermediate heat exchanger 10, first heat exchanger 20, second interface 02, third interface 03, intermediate heat exchanger 10, first heat exchanger 20, and then back to the compressor 30 to complete one refrigeration cycle.

[0094] The fifth valve mechanism 25 is an on / off valve. It is closed in cooling and heating modes. When the system needs to defrost, the fluid control device activates the fourth operating mode, and the fifth valve mechanism 28 opens. In defrost mode, at least part of the refrigerant flow path within the vehicle's thermal management system is: first interface 01, seventh interface 07, gas cooler 40, eighth interface 08, second interface 02, first heat exchanger 20, intermediate heat exchanger 10, ninth interface 09, fifth interface 05, battery cooler 60, intermediate heat exchanger 10, and then back to the compressor 30 to complete one refrigeration cycle.

[0095] It should be noted that the description of the refrigerant flow path under the various operating modes described above does not mean that the vehicle thermal management system only includes the above components.

[0096] The aforementioned vehicle thermal management system can achieve four different operating modes to meet the system's multi-functional requirements. Furthermore, the application of the fluid control device of this application reduces the overall piping connections, simplifies assembly, and minimizes leakage points.

[0097] The fluid control device and vehicle thermal management system of this application can adjust the on / off state or flow rate of the working medium (such as refrigerant) in different operating modes of the system. The fluid control device of this application has a high degree of integration and a compact structure. The valve unit is fixed to the block unit, and the valve mechanism or throttling mechanism is not connected by pipelines. This not only facilitates installation, but also reduces leakage of the fluid control device compared to pipeline connections, as the flow channel is located inside the block unit.

[0098] It should be noted that the above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described in the present invention. Those skilled in the art should understand that they can still modify, combine or make equivalent substitutions to the present invention, and all technical solutions and improvements that do not depart from the spirit and scope of the present invention should be covered within the scope of the claims of this invention.

Claims

1. A fluid control device, comprising a valve unit and a block unit, wherein the valve unit includes a first valve mechanism, a second valve mechanism, a third valve mechanism, a fourth valve mechanism, a first throttling mechanism, and a second throttling mechanism; the block unit includes a mounting hole portion, the mounting hole portion including a first mounting hole, a second mounting hole, a third mounting hole, a fourth mounting hole, a fifth mounting hole, and a sixth mounting hole; at least a portion of the first valve mechanism is located in the first mounting hole; at least a portion of the second valve mechanism is located in the second mounting hole; at least a portion of the third valve mechanism is located in the third mounting hole; at least a portion of the fourth valve mechanism is located in the fourth mounting hole; at least a portion of the first throttling mechanism is located in the fifth mounting hole; at least a portion of the second throttling mechanism is located in the sixth mounting hole; the block unit includes a first interface, a second interface, a third interface, a fourth interface, a fifth interface, a sixth interface, a seventh interface, and an eighth interface; The fluid control device includes a first operating mode and a second operating mode. In the first operating mode, the first valve mechanism, the third valve mechanism, and the first throttling mechanism are open, and the first interface, the first valve mechanism, and the second interface are connected; the fifth interface, the first throttling mechanism, and the sixth interface are connected; and the fourth interface, the third valve mechanism, and the third interface are connected. The fluid flow rate between the fifth interface and the sixth interface can be adjusted by adjusting the first throttling mechanism. In the second operating mode, the second valve mechanism, the fourth valve mechanism, the first throttling mechanism, and the second throttling mechanism are open, and the first interface, the second valve mechanism, and the seventh interface are connected; the eighth interface, the second throttling mechanism, and the fourth interface are connected; the sixth interface, the first throttling mechanism, and the fifth interface are connected; and the second interface, the fourth valve mechanism, and the third interface are connected. The fluid flow rate between the fifth interface and the sixth interface can be adjusted by adjusting the first throttling mechanism, and the fluid flow rate between the eighth interface and the fourth interface can be adjusted by adjusting the second throttling mechanism.

2. The fluid control device according to claim 1, characterized in that, The fluid control device includes a third throttling mechanism, the mounting hole includes a seventh mounting hole, at least a portion of the third throttling mechanism is located in the seventh mounting hole, the block unit includes a ninth interface, and the fluid control device includes a third operating mode. In the third operating mode, the first valve mechanism and the third throttling mechanism are open, and the first interface, the first valve mechanism, and the second interface are connected. The fluid flow rate between the fifth interface and the ninth interface can be adjusted by adjusting the third throttling mechanism.

3. The fluid control device according to claim 2, characterized in that, The fluid control device includes a fifth valve mechanism, and the mounting hole includes an eighth mounting hole. At least a portion of the fifth valve mechanism is located in the eighth mounting hole. The fluid control device includes a fourth operating mode. In the fourth operating mode, the second valve mechanism, the fifth valve mechanism, and the third throttling mechanism are open. The first interface, the second valve mechanism, and the seventh interface are connected. The eighth interface, the fifth valve mechanism, and the second interface are connected. The fluid flow rate between the fifth interface and the ninth interface can be adjusted by adjusting the third throttling mechanism.

4. The fluid control device according to claim 3, characterized in that the block unit includes a first flow channel, a second flow channel, a third flow channel, a fourth flow channel, a fifth flow channel, a sixth flow channel, a seventh flow channel, an eighth flow channel, a ninth flow channel, a tenth flow channel, an eleventh flow channel, and a twelfth flow channel; the first flow channel connects the first interface and the second mounting hole; the second flow channel connects the first mounting hole and the second mounting hole; the third flow channel connects the first mounting hole and the fourth mounting hole; the fourth flow channel connects the fourth mounting hole and the second interface; the fifth flow channel connects the fifth interface and the fifth mounting hole; the sixth flow channel connects the sixth interface and the fifth mounting hole; the seventh flow channel connects the third mounting hole and the sixth mounting hole; the eighth flow channel connects the third interface and the third mounting hole; the ninth flow channel connects the seventh interface and the second mounting hole; the tenth flow channel connects the fourth interface and the sixth mounting hole; the eleventh flow channel connects the eighth interface and the sixth mounting hole; and the twelfth flow channel connects the third mounting hole and the fourth mounting hole.

5. The fluid control device according to claim 4, characterized in that, The mounting hole portion includes a seventh mounting hole and an eighth mounting hole. The block includes a thirteenth flow channel, a fourteenth flow channel, a fifteenth flow channel, and a sixteenth flow channel. The thirteenth flow channel connects the fifth mounting hole and the seventh mounting hole. At least a portion of the third throttling mechanism is located in the seventh mounting hole. The thirteenth flow channel can connect to the fourteenth flow channel through the third throttling mechanism. The ninth interface connects to the fourteenth flow channel. The fifteenth flow channel connects the sixth mounting hole and the eighth mounting hole. The sixteenth flow channel connects the second interface and the eighth mounting hole.

6. The fluid control device according to claim 5, characterized in that, The first interface, the first flow channel, the first mounting hole, and the second flow channel are always connected; the third flow channel, the fourth mounting hole, the fourth flow channel, the eighth mounting hole, the sixth flow channel, and the second interface are always connected; and the third mounting hole, the seventh flow channel, the sixth mounting hole, and the fourth interface are always connected.

7. The fluid control device according to claim 6, characterized in that... The openings of the third, sixth, eighth, and seventh interfaces face the same direction and are located on the first wall of the block. The openings of the first and seventh interfaces face the same direction and are located on the second wall of the block. The openings of the second and fourth interfaces face the same direction and are located on the third wall of the block. The first and fourth valve mechanisms are located between the second and fifth valve mechanisms. Along the XX direction, the first valve mechanism is closer to the second valve mechanism than the fourth valve mechanism. Along the XX direction, the third throttling mechanism and the third valve mechanism are located between the first throttling mechanism and the... Between the second throttling mechanism and the third throttling mechanism, the third throttling mechanism is closer to the first throttling mechanism than the third valve mechanism. The first flow channel and the second flow channel are coaxially arranged. The third flow channel, the fourth flow channel, and the sixteenth flow channel are coaxially arranged. The fifth flow channel and the thirteenth flow channel are coaxially arranged. The seventh flow channel and the tenth flow channel are coaxially arranged. The eighth flow channel and the twelfth flow channel are coaxially arranged. The twelfth flow channel is located between the third mounting hole and the fourth mounting hole. The eleventh flow channel and the fifteenth flow channel are coaxially arranged. The fifteenth flow channel is located between the sixth mounting hole and the eighth mounting hole.

8. The fluid control device according to claim 7, characterized in that, The surface where the opening of each of the mounting holes is located is defined as the first surface. The ninth flow channel, the third flow channel, the fourth flow channel, and the sixteenth flow channel are arranged parallel to the first flow channel and the second flow channel. The first flow channel is closer to the first surface than the ninth flow channel. The fifth flow channel, the eighth flow channel, the eleventh flow channel, the twelfth flow channel, the thirteenth flow channel, and the fifteenth flow channel are closer to the first surface than the sixth flow channel, the seventh flow channel, the tenth flow channel, and the fourteenth flow channel.

9. The fluid control device according to claim 3, characterized in that, The block unit includes a first flow channel, a second flow channel, a third flow channel, a fourth flow channel, a fifth flow channel, a sixth flow channel, a seventh flow channel, an eighth flow channel, a ninth flow channel, a tenth flow channel, and an eleventh flow channel. The first flow channel connects the first interface and the second mounting hole; the second flow channel connects the first mounting hole and the second mounting hole; the third flow channel connects the first mounting hole and the fourth mounting hole; the third flow channel connects the first flow channel and the eighth mounting hole; the fourth flow channel connects the fifth interface and the fifth mounting hole; the fifth flow channel connects the sixth interface and the fifth mounting hole; the sixth flow channel connects the third mounting hole and the sixth mounting hole; the seventh flow channel connects the third interface and the third mounting hole; the eighth flow channel connects the seventh interface and the second mounting hole; the ninth flow channel connects the fourth interface and the sixth mounting hole; the tenth flow channel connects the eighth interface and the sixth mounting hole; and the eleventh flow channel connects the third mounting hole and the fourth mounting hole.

10. The fluid control device according to claim 9, characterized in that, The block includes a twelfth flow channel and a thirteenth flow channel. The twelfth flow channel connects the fifth mounting hole and the seventh mounting hole, and the thirteenth flow channel connects the ninth interface and the seventh mounting hole.

11. The fluid control device according to claim 10, characterized in that, The block includes a fourteenth flow channel and a fifteenth flow channel. The fourteenth flow channel connects the sixth mounting hole and the eighth mounting hole, and the fifteenth flow channel connects the second interface and the first mounting hole.

12. The fluid control device according to claim 11, characterized in that... The second and seventh interfaces face the same direction and are located on the first wall of the block. The openings of the first and fifth interfaces face the same direction and are located on the second wall of the block. The openings of the third and eighth interfaces face the same direction and are located on the third wall of the block. The openings of the fourth, sixth, and ninth interfaces face the same direction and are located on the fourth wall of the block. The fifth valve mechanism and the third throttling mechanism are located between the first throttling mechanism and the second throttling mechanism. The third throttling mechanism is closer to the first throttling mechanism than the fifth valve mechanism. The first valve mechanism and the fourth valve mechanism are located between the second valve mechanism and the third valve mechanism. The first valve mechanism is closer to the second valve mechanism than the fourth valve mechanism.

13. The fluid control device according to claim 12, characterized in that, The third flow channel includes a first branch, a second branch, a third branch, a fourth branch, and a fifth branch. The first branch is perpendicular to the first flow channel and extends from the first mounting hole toward the seventh mounting hole. The second branch extends from the end of the first branch away from the first mounting hole toward the second wall of the block. The third branch is parallel to the first flow channel and extends from the eighth mounting hole toward the fourth mounting hole to communicate with the second branch. The fifth branch is perpendicular to the second and third branches. The fourth branch is parallel to the first flow channel and extends from the fourth mounting hole toward the eighth mounting hole to communicate with the fifth branch. The sixth flow channel includes a first branch channel, a second branch channel, and a third branch channel. The first branch channel extends from the third mounting hole toward the sixth mounting hole. The third branch channel extends from the sixth mounting hole toward the third mounting hole. The third branch channel is parallel to the fifth branch channel and perpendicular to the first and second branch channels.

14. The fluid control device according to claim 3, characterized in that the block unit includes a first flow channel, a second flow channel, a third flow channel, a fourth flow channel, a fifth flow channel, a sixth flow channel, a seventh flow channel, an eighth flow channel, a ninth flow channel, a tenth flow channel, an eleventh flow channel, a twelfth flow channel, and a thirteenth flow channel; the first flow channel connects the first interface and the second mounting hole; the second flow channel connects the first mounting hole and the second mounting hole; the third flow channel connects the first mounting hole and the fourth mounting hole; the fourth flow channel connects the third mounting hole and the fourth mounting hole; and the fifth flow channel connects... The second interface is connected to the third mounting hole; the sixth flow channel is connected to the sixth interface and the fifth mounting hole; the seventh flow channel is connected to the fifth interface and the fifth mounting hole; the eighth flow channel is connected to the fourth interface and the third mounting hole; the ninth flow channel is connected to the third interface and the third mounting hole; the tenth flow channel is connected to the seventh interface and the second mounting hole; the eleventh flow channel is connected to the third mounting hole and the fourth mounting hole; the twelfth flow channel is connected to the eighth interface and the sixth mounting hole; and the thirteenth flow channel is connected to the third mounting hole and the sixth mounting hole.

15. The fluid control device according to claim 14, characterized in that, The block includes a fourteenth flow channel, a fifteenth flow channel, a sixteenth flow channel, and a seventeenth flow channel. The fourteenth flow channel connects the fifth mounting hole and the seventh mounting hole. The fifteenth flow channel connects the ninth interface and the seventh mounting hole. The sixteenth flow channel connects the sixth mounting hole and the eighth mounting hole. The seventeenth flow channel connects the fourth mounting hole and the eighth mounting hole.

16. The fluid control device according to claim 15, characterized in that, The fourth flow channel and the eleventh flow channel are located between the third mounting hole and the third mounting hole. The eleventh flow channel and the fourth flow channel are arranged in parallel. The fourth flow channel, the third mounting hole, the fourth mounting hole, and the seventeenth flow channel are always connected. The fourth flow channel and the thirteenth flow channel are always connected. The fourth flow channel and the eleventh flow channel are connected or disconnected through the fourth valve mechanism.

17. The fluid control device according to any one of claims 1-16, further comprising a drive unit, wherein the valve unit is fixedly connected or limitedly connected to the block unit, the drive unit drives the valve unit to operate, the drive unit comprising a housing, a first drive part, a second drive part, a third drive part, a fourth drive part, a fifth drive part, a sixth drive part, a seventh drive part, an eighth drive part, and a circuit board, the circuit board being electrically connected to each of the drive parts, the housing being fixedly connected or limitedly connected to the block unit, each of the drive parts being at least partially located within the housing, each of the drive parts being injection molded, and the housing being injection molded during the injection molding process of each of the drive parts.

18. The fluid control device according to claim 17, characterized in that, The circuit board is a flexible circuit board or a rigid circuit board. The circuit board includes through holes corresponding to the total number of valve mechanisms and throttling mechanisms of the valve unit, and each valve mechanism and each throttling mechanism passes through the through holes.

19. The fluid control device according to any one of claims 1-16, characterized in that, The first valve mechanism includes a first valve seat having a first valve port; the second valve mechanism includes a second valve seat having a second valve port; the third valve mechanism includes a third valve seat having a third valve port; the fourth valve mechanism includes a fourth valve seat having a fourth valve port; the fifth valve mechanism includes a fifth valve seat having a fifth valve port; the first throttling mechanism includes a sixth valve seat having a sixth valve port; the second throttling mechanism includes a seventh valve seat having a seventh valve port; the third throttling mechanism includes an eighth valve seat having an eighth valve port; the first valve seat is at least partially located in the first mounting hole; the second valve seat is at least partially located in the second mounting hole; the third valve seat is at least partially located in the third mounting hole; the fourth valve seat is at least partially located in the fourth mounting hole; and the fifth valve seat... The first valve core is at least partially located in the first valve seat cavity of the first valve seat, the second valve core is at least partially located in the second valve seat cavity of the second valve seat, the third valve core is at least partially located in the third valve seat cavity of the third valve seat, the fourth valve core is at least partially located in the fourth valve seat cavity of the fourth valve seat, the fifth valve core is at least partially located in the fifth valve seat cavity of the fifth valve seat, the sixth valve core is at least partially located in the sixth valve seat cavity of the sixth valve seat, the seventh valve core is at least partially located in the seventh valve seat cavity of the seventh valve seat, and the eighth valve core is at least partially located in the eighth valve seat cavity of the eighth valve seat. The wall of the first valve seat includes a first communicating hole, and the second flow channel, the first communicating hole, and the first valve seat cavity are always in communication. The first valve core is separated from the first valve port, and the first valve seat cavity is in communication with the third flow channel. The wall of the second valve seat includes a second connecting hole. The first flow channel, the second connecting hole, the second valve seat cavity, and the second flow channel are always connected. The second valve core is away from the second valve port. The first flow channel is connected to the ninth flow channel. The wall of the third valve seat includes a third connecting hole. The eighth flow channel, the third connecting hole, the third valve seat cavity, and the twelfth flow channel are always connected. The third valve core is separated from the third valve port. The seventh flow channel is connected to the eighth flow channel. The wall of the fourth valve seat includes a fourth connecting hole. The twelfth flow channel, the fourth connecting hole, and the fourth valve seat cavity are always in communication. The fourth valve core is separated from the fourth valve port, and the fourth flow channel is in communication with the twelfth flow channel. The wall of the fifth valve seat includes a fifth connecting hole, and the fifteenth flow channel, the fifth connecting hole, and the fifth valve seat cavity are always in communication. The fifth valve core is separated from the fifth valve port, and the sixteenth flow channel is in communication with the fifteenth flow channel. The wall of the sixth valve seat includes a sixth connecting hole. The fifth flow channel, the sixth connecting hole, the sixth valve seat cavity, and the thirteenth flow channel are always connected. The sixth valve core is separated from the sixth valve port. The fifth flow channel is connected to the sixth flow channel. The wall of the seventh valve seat includes a seventh connecting hole, and the eleventh flow channel, the seventh connecting hole, the seventh valve seat cavity, and the fifteenth flow channel are always connected. The seventh valve core is separated from the seventh valve port, and the eleventh flow channel is connected to the tenth flow channel. The wall of the eighth valve seat includes an eighth connecting hole. The thirteenth flow channel, the eighth connecting hole, and the eighth valve seat cavity are always connected. The eighth valve core is away from the eighth valve port. The fifteenth flow channel is connected to the sixteenth flow channel.

20. A vehicle thermal management system, characterized in that, The device includes a compressor, a first heat exchanger, an intermediate heat exchanger, a second heat exchanger, a battery cooler, a gas cooler, and a fluid control device as described in any one of claims 1-19. The first interface is connected to the outlet of the compressor, the second interface is connected to the inlet of the first heat exchanger, the third interface is connected to the inlet of the intermediate heat exchanger, the fourth interface is connected to the outlet of the second heat exchanger, the fifth interface is connected to the outlet of the intermediate heat exchanger, the sixth interface is connected to the inlet of the second heat exchanger, the seventh interface is connected to the inlet of the gas cooler, the eighth interface is connected to the outlet of the gas cooler, and the ninth interface is connected to the inlet of the battery cooler.

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