Fluid distribution assembly

Abstract

Provided in the present disclosure is a fluid distribution assembly. The fluid distribution assembly comprises: a valve block having a first port, a first cavity and a second cavity, wherein the first cavity is in fluid communication with the second cavity; a first valve mounted in the first cavity; a second valve mounted in the second cavity; and a valve seat mounted in the valve block and abutting against the second valve, wherein the second valve is in fluid communication with the first port by means of the valve seat.

Description

Fluid distribution components Technical Field

[0001] This disclosure relates to a fluid distribution assembly. Background Technology

[0002] Vehicle thermal management systems typically include refrigerant and coolant circuits. The refrigerant circuit mainly consists of components such as a compressor, heat exchanger, and throttling device connected by piping. To switch between vehicle thermal management modes (e.g., cooling mode, heat pump mode), multiple valves are usually required in the refrigerant circuit, such as multiple shut-off valves and / or multi-way valves (e.g., three-way valves). This system configuration not only results in higher costs for the vehicle thermal management system but also more complex control strategies.

[0003] Therefore, there is a need in the art for a fluid distribution component that can solve the above problems.

[0004] Utility Model Content

[0005] Therefore, the purpose of this disclosure is to provide a fluid distribution assembly that can integrate multiple valves together, particularly multi-way valves and throttle ball valves, thereby reducing the cost of the vehicle thermal management system and simplifying the control strategy of the vehicle thermal management system.

[0006] The above objective is achieved through the fluid distribution assembly described below.

[0007] This disclosure provides a fluid distribution assembly, comprising: a valve block having a first interface, a first chamber, and a second chamber, the first chamber and the second chamber being in fluid communication; a first valve installed in the first chamber; a second valve installed in the second chamber; and a valve seat installed within the valve block and abutting against the second valve; wherein the second valve is in fluid communication with the first interface through the valve seat.

[0008] The fluid distribution component according to this disclosure may also have one or more of the following features, individually or in combination.

[0009] In one embodiment, the valve block has a first interface surface, a first mounting surface, and a second mounting surface, wherein the first interface is disposed on the first interface surface, the first valve is mounted on the first mounting surface, and the second valve is mounted on the second mounting surface.

[0010] In one embodiment, the valve seat has an internal passage; the second valve communicates with the first interface through the internal passage; the internal passage is configured to deflect fluid.

[0011] In one embodiment, the valve seat has a first opening in the axial direction and a second opening in the radial direction; the first opening and the second opening define the internal passage.

[0012] In one embodiment, the second valve is in fluid communication with the first interface in a throttling manner.

[0013] In one embodiment, the valve block further has a second interface surface, on which a second interface is provided, and the second valve is in fluid communication with the second interface.

[0014] In one embodiment, the first mounting surface and the second mounting surface are located at both ends of the valve block, and / or the first interface surface and the second interface surface are adjacent to each other.

[0015] In one embodiment, the valve block has an extending axis and a plurality of first channels extending along the extending axis, and the second valve is in fluid communication with the first valve through a corresponding first channel.

[0016] In one embodiment, the valve block has a second channel extending in a first direction transverse to the extension axis, and the second valve is in fluid communication with the first interface through a corresponding second channel.

[0017] In one embodiment, the valve block has a third channel extending in a second direction transverse to the extension axis and the first direction, through which the second valve is in fluid communication with the second interface.

[0018] In one embodiment, the valve block further has a third interface surface opposite to the first interface surface, the third interface surface is provided with a third interface, the valve block has a fourth channel extending in a third direction transverse to the extension axis and opposite to the first direction, the valve port of the first valve is in fluid communication with the corresponding third interface through the corresponding first channel and the corresponding fourth channel, and the second valve is also mounted on the third interface surface.

[0019] In one embodiment, a fourth interface is further provided on the first interface surface, and the valve port of the first valve is in fluid communication with the corresponding fourth interface through a corresponding first channel and a corresponding second channel.

[0020] In one embodiment, the valve seat has a cylindrical shape extending along the extended axis, and the circumferential sidewall of the valve seat has a plurality of through holes.

[0021] In one embodiment, the valve seat is housed in the second chamber, and the inner wall of the second chamber and the valve seat form an annular channel of the internal passage.

[0022] In one embodiment, the plurality of through holes are evenly distributed on the circumferential sidewall.

[0023] In one embodiment, the second valve includes a valve ball, a valve ball seat, a valve cover, and an actuator. The valve ball and the valve seat respectively abut against the two ends of the valve ball seat. The valve ball has an expansion groove on its ball wall. The actuator drives the valve ball to rotate about a rotation axis transverse to the extension axis, so that the expansion groove and the valve ball seat form different fluid flow sections.

[0024] In one embodiment, the depth of the expansion groove is gradually varied along the rotation direction of the valve ball.

[0025] In one embodiment, the valve ball has a communication channel, and the third channel is in fluid communication with the valve seat through the communication channel.

[0026] In one embodiment, the first valve is a multi-port valve having at least five ports.

[0027] The fluid distribution assembly disclosed herein can integrate the first valve and the second valve together, and achieve installation and connection through a single valve block; the fluid distribution assembly disclosed herein can reduce the use of pipelines, avoid the installation difficulties and control complexity caused by pipeline connections, thereby reducing the cost of the vehicle thermal management system, simplifying the control strategy of the vehicle thermal management system, and has a simple structure and is easy to install; the fluid distribution assembly disclosed herein is easier to install on the flow channel plate, thus further improving the integration of the vehicle thermal management system. Attached Figure Description

[0028] The advantages and objectives of this disclosure will be better understood from the preferred embodiments described below in conjunction with the accompanying drawings. The drawings are not to scale in order to better illustrate the relationships between the components. In the drawings:

[0029] Figure 1 shows a schematic diagram of a fluid distribution assembly according to an embodiment of the present disclosure in one direction;

[0030] Figure 2 shows a schematic diagram of a fluid distribution assembly according to an embodiment of the present disclosure from another direction;

[0031] Figure 3 shows a partial cross-sectional view of a fluid distribution assembly according to an embodiment of the present disclosure, in which a second valve is shown;

[0032] Figure 4 shows a partial cross-sectional view of a fluid distribution assembly according to an embodiment of the present disclosure, in which a second chamber is shown;

[0033] Figure 5 shows a partial cross-sectional view of a fluid distribution assembly according to an embodiment of the present disclosure, showing the communication between the second chamber and the first interface;

[0034] Figure 6 shows a partial cross-sectional view of a fluid distribution assembly according to an embodiment of the present disclosure, illustrating the communication between different channels within the valve block and their respective interfaces;

[0035] Figure 7 shows a partial cross-sectional view of a fluid distribution assembly according to an embodiment of the present disclosure, illustrating the communication between different channels within the valve block and their respective interfaces;

[0036] Figure 8 shows a partial cross-sectional view of a fluid distribution assembly according to an embodiment of the present disclosure, showing the communication between a third channel within the valve block and a second interface;

[0037] Figure 9 shows a partial cross-sectional view of a fluid distribution assembly according to an embodiment of the present disclosure, illustrating the communication between different channels within the valve block and their respective interfaces;

[0038] Figure 10 shows a schematic diagram of a second valve and valve seat of a fluid distribution assembly according to an embodiment of the present disclosure;

[0039] Figure 11 shows a schematic diagram of a portion of the second valve and the valve seat of a fluid distribution assembly according to an embodiment of the present disclosure in one direction;

[0040] Figure 12 shows a schematic diagram of a portion of the second valve and the valve seat of a fluid distribution assembly according to an embodiment of the present disclosure, wherein an expansion groove is shown; and

[0041] Figure 13 shows a schematic diagram of a portion of the second valve of a fluid distribution assembly according to an embodiment of the present disclosure. Detailed Implementation

[0042] To make the objectives, technical solutions, and advantages of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. The same reference numerals in the drawings represent the same components. It should be noted that the described embodiments are only some, not all, of the embodiments of this disclosure. All other embodiments obtained by those skilled in the art based on the described embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0043] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure pertains. The terms “first,” “second,” and similar terms used in this patent application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms “an” or “a” and similar terms do not necessarily indicate a quantity limitation. The terms “comprising,” “including,” or “having,” and similar terms mean that the element or object preceding the word encompasses the element or object listed following the word and its equivalents, without excluding other elements or objects. The terms “connected” or “connected,” and similar terms are not limited to the physical or mechanical connection or connection shown in the drawings, but may include equivalent connections or connections, whether direct or indirect. The terms “upper,” “lower,” “left,” and “right,” etc., are used only to indicate relative positional relationships, which may change accordingly when the absolute position of the described object changes.

[0044] The embodiments of this disclosure will now be described in detail with reference to Figures 1 to 13.

[0045] Figures 1 and 2 show external schematic diagrams of the fluid distribution assembly according to the present disclosure in different orientations, and Figures 3 to 9 show different cross-sectional views of the fluid distribution assembly, illustrating cross-sections of different portions of the fluid distribution assembly to show various flow channels or passages. The fluid distribution assembly can be used in a vehicle thermal management system, for example, mounted on a flow channel plate of the vehicle thermal management system, such as a refrigerant flow channel plate, and communicate with components in the vehicle thermal management system, such as water condensers, evaporator condensers, internal heat exchangers, etc. Fluids such as refrigerants can be distributed to components in the vehicle thermal management system via the fluid distribution assembly. Of course, the fluid distribution assembly of the present disclosure can also be applied to a coolant flow channel plate for distributing fluids such as coolant.

[0046] As shown in Figure 1, the fluid distribution assembly includes a valve block 1, a first valve 7, and a second valve 8. As shown in Figure 5, the valve block 1 has a first interface 10, a first chamber 101, and a second chamber 102. The first chamber 101 and the second chamber 102 are in fluid communication, for example, through a vertical channel within the valve block 1 shown in Figure 5. The first valve 7 is installed in the first chamber 101, and the second valve 8 is installed in the second chamber 102. As shown in Figure 5, the fluid distribution assembly also includes a valve seat 9, which is installed within the valve block 1 and abuts against the second valve 8. The second valve 8 is in fluid communication with the first interface 10 through the valve seat 9.

[0047] For example, the first chamber 101 may form part of the valve chamber of the first valve 7, and the valve port of the first valve 7 may be formed at the bottom of the first chamber 101, for example, on the bottom wall of the recess formed at the end of the valve block 1. For example, the second chamber 102 may form part of the valve chamber of the second valve 8. Alternatively, at least a portion of the first valve 7 may be disposed in the first chamber 101, and at least a portion of the second valve 8 may be disposed in the second chamber 102.

[0048] For example, the first valve 7 can be a multi-port valve, such as a multi-port valve having at least five ports. Specifically, the first valve 7 can be a five-port valve having a first port V1 to a fifth port V5, as shown in FIG5. This disclosure does not limit the number of ports of the multi-port valve.

[0049] For example, the second valve 8 is in fluid communication with the first port 10 in a throttling manner; that is, the second valve 8 can have a throttling mode in which fluid flows through the second valve 8 in a throttling manner. For example, the second valve 8 can be a three-way throttling ball valve or a three-way expansion ball valve. This disclosure does not limit the number of valve ports of the second valve 8.

[0050] In addition to the aforementioned throttling mode, the second valve 8 can also have a fully open mode and a fully closed mode. In the fully open mode, fluid can flow through the second valve 8 with virtually no pressure loss. In the fully closed mode, fluid cannot flow through the second valve 8. The switching between these three modes is achieved by rotating the valve ball of the second valve 8 as described below.

[0051] The fluid distribution assembly integrates the first and second valves, and in particular, integrates the five-way valve and the throttle ball valve. The assembly has a high degree of integration, flexible design, and simple structure, thereby reducing the cost of the vehicle thermal management system and simplifying the control strategy of the vehicle thermal management system.

[0052] Referring again to Figures 1 and 5, the valve block 1 has a first interface surface 4, a first mounting surface 2, and a second mounting surface 3. The first interface 10 is disposed on the first interface surface 4, the first valve 7 is mounted on the first mounting surface 2, and the second valve 8 is mounted on the second mounting surface 3. For example, the first mounting surface 2 and the second mounting surface 3 can be located at both ends of the valve block 1, as shown at the upper and lower ends in Figure 5. For example, the valve block 1 has a recess (e.g., recessed towards the center of the valve block or vertically downward recessed) at the first mounting surface 2 to form a first chamber 101. For example, the valve block 1 has a recess (e.g., recessed towards the center of the valve block or vertically upward recessed) at the second mounting surface 3 to form a second chamber 102. This configuration not only makes the structure of the fluid distribution assembly compact but also does not hinder the engagement with the flow channel plate, for example, by leaving a side surface for engagement with the flow channel plate, i.e., the first interface surface 4 mentioned above. Furthermore, this configuration makes the installation, disassembly, and maintenance of the valve simpler and more convenient.

[0053] Referring to Figure 5, the valve seat 9 has an internal channel 90, through which the second valve 8 communicates with the first interface 10. The internal channel 90 is configured to bend the fluid. "Bending the fluid" means that the flow direction of the fluid changes by a non-zero angle, such as 90 degrees as shown in Figures 3 and 5, that is, from the vertical downward direction to the horizontal leftward direction.

[0054] As shown in Figures 3 and 5, the valve seat 9 has a first opening 91 opening along the axial direction and a second opening 92 opening along the radial direction, the first opening 91 and the second opening 92 defining the internal passage 90 described above. The valve seat 9 may have a generally cylindrical body shape, for example, having a cylindrical upper end and a cylindrical lower end, and a relatively small middle portion located between them. For example, in the axial direction (i.e., the vertical direction) of the valve seat 9, the valve seat 9 has a first opening 91, for example, at its upper end near the second valve 8, and in the radial direction of the valve seat 9, the valve seat 9 has a second opening 92, for example, at its middle portion. This arrangement of openings with different orientations allows for fluid deflection, resulting in a simple and compact structure.

[0055] As shown in Figure 1, the valve block 1 also has a second interface surface 5, on which a second interface 12 is provided, and the second valve 8 is in fluid communication with the second interface 12. Thus, the three ports of the second valve 8, for example, a three-way throttling ball valve, can be in fluid communication with the first valve 7, the first interface 10, and the second interface 12, respectively. For example, the second interface 12 can be in fluid communication with components of the vehicle's thermal management system, for example, through a pipeline.

[0056] Considering that the first mounting surface 2 and the second mounting surface 3 are located at both ends of the valve block 1, the first interface surface 4 and the second interface surface 5 can be adjacent to each other. This allows for a compact structure and does not affect the installation of the fluid distribution assembly and the flow channel plate. Of course, the first interface surface 4 and the second interface surface 5 do not have to be adjacent; for example, they can be opposite each other.

[0057] As shown in Figure 1, the valve block 1 has an extending axis A1 and can be a block structure extending along the extending axis A1. As shown in Figures 4 to 9, the valve block 1 has a plurality of first channels 13, 14, 15, 41, and 42 extending along the extending axis A1, which are formed at different positions on the valve block 1 and communicate with different valve ports of the first valve 7, as can be seen from the figures. For example, the first valve 7, such as a five-way valve, can have multiple operating modes. In different operating modes, the first valve 7 selectively communicates with at least two of the aforementioned first channels 13, 14, 15, 41, and 42, in other words, communicates with at least two valve ports. The second valve 8 is in fluid communication with the first valve 7 through a corresponding first channel. Specifically, as shown in Figure 5, the second valve 8 is in fluid communication with the first valve 7 through the first channel 13. One end of the first channel 13 (the upper end in Figure 5) is connected to the first chamber 101, or in other words, to the first valve port V1 of the first valve 7, and the other end (the lower end in Figure 5) is connected to the second chamber 102. For example, these first channels 13, 14, 15, 41, and 42 are integrally formed with the valve block 1.

[0058] As shown in Figures 4 to 9, the valve block 1 has second channels 16, 17, 18, and 43 extending transversely to a first direction S1 extending along the extension axis A1, which are formed at different locations on the valve block 1, as can be seen in Figures 5, 6, 7, and 9. The second valve 8 is in fluid communication with the first interface 10 through the corresponding second channel. Specifically, as shown in Figure 5, the second valve 8 is in fluid communication with the first interface 10 through the second channel 16. One end of the second channel 16 (the right end in Figure 5) communicates with the second chamber 102, and the other end (the left end in Figure 5) communicates with the first interface 10. For example, these second channels 16, 17, 18, and 43 are integrally formed with the valve block 1.

[0059] As shown in Figures 7 and 8, the valve block 1 has a third channel 19 extending transversely to a second direction S2, which is transverse to the extension axis A1 and the first direction S1. The second valve 8 is in fluid communication with the second interface 12 through the third channel 19. The second direction S2 is perpendicular to the plane formed by the extension axis A1 and the first direction S1. As shown in Figure 8, one end of the third channel 19 is connected to the second chamber 102, and the other end (the left end in Figure 8) is connected to the second interface 12.

[0060] As shown in Figure 2, the valve block 1 also has a third interface surface 6 opposite to the first interface surface 4, and the third interface surface 6 is provided with third interfaces 23 and 24. For example, the valve block 1 can be roughly a cuboid with four sides, the third interface surface 6 is adjacent to the second interface surface 5, and the second interface surface 5 is adjacent to the first interface surface 4.

[0061] As shown in Figures 5 and 9, the valve block 1 has fourth channels 25 and 26 extending transversely to the extending axis A1 and opposite to the first direction S1 in a third direction S3. The valve port of the first valve 7 is in fluid communication with the corresponding third interface through the corresponding first channel and the corresponding fourth channel. For example, the first valve port V1 of the first valve 7 is in fluid communication with the third interface 24 through the interconnected first channel 13 and fourth channel 25, as shown in Figure 5. For example, the fourth valve port V4 of the first valve 7 is in fluid communication with the third interface 23 through the interconnected first channel 42 and fourth channel 26, as shown in Figure 9. The second valve 8 is also mounted on the third interface surface 6.

[0062] As shown in Figure 1, the first interface surface 4 is also provided with fourth interfaces 20, 21, and 22. The valve ports of the first valve 7 are fluidly connected to the corresponding fourth interfaces through the corresponding first channels and corresponding second channels. For example, the second valve port V2 of the first valve 7 is fluidly connected to the fourth interface 20 through the interconnected first channel 14 and second channel 17, as shown in Figure 6. For example, the fifth valve port V5 of the first valve 7 is fluidly connected to the fourth interface 21 through the interconnected first channel 41 and second channel 18, as shown in Figure 7. For example, the third valve port V3 of the first valve 7 is fluidly connected to the fourth interface 22 through the interconnected first channel 15 and second channel 43.

[0063] By setting channels extending in different directions within the valve block, the first valve and the second valve can be connected, or the first valve and / or the second valve can be connected to components of the vehicle thermal management system or to the flow channel plate. Therefore, it can help realize different vehicle thermal management modes, and the overall structure is simple and compact.

[0064] As shown in Figures 3, 5, and 10, the valve seat 9 has a cylindrical shape extending along the extending axis A1, and the circumferential sidewall 27 of the valve seat 9 has a plurality of through holes 28. For example, the circumferential sidewall 27 has three through holes 28. The through holes 28 form the second opening 92 described above. For example, a plurality of through holes 28 are formed on the circumferential sidewall in the middle portion between the upper end and the lower end of the cylinder. For example, the plurality of through holes 28 are evenly distributed on the circumferential sidewall 27 of the valve seat 9. The through holes 28 form the second opening 92 of the valve seat 9 described above, which is opened radially.

[0065] By providing multiple through holes, a more flexible installation method can be provided, as it is not necessary to strictly align the through holes with the second channel 16. Regardless of the installation position, the valve seat of this disclosure allows unobstructed flow of fluid to the second channel 16.

[0066] As shown in Figures 3 and 5, the valve seat 9 is housed in the second chamber 102 of the valve block 1, and the inner wall of the second chamber 102 forms an annular channel 36 of the internal passage 90 with the valve seat 9. For example, the second chamber 102 may have a cylindrical shape, so that its inner wall can form an annular channel 36 with the valve seat 9. For example, a seal such as an O-ring is provided between the valve seat 9 and the inner wall of the second chamber 102, for example, a seal is provided at both the upper and lower ends of the cylinder. This allows the fluid to flow more smoothly into the second passage 16 and then out through the first port 10.

[0067] As shown in Figures 10 to 13, the second valve 8 includes a valve ball 29, a valve ball seat 30, a valve cover 31, and an actuator 32. The valve ball 29 and the valve seat 9 respectively abut against the two ends of the valve ball seat 30. For example, the upper end of the valve seat 9 is provided with a groove for accommodating the valve ball seat 30. For example, a seal such as an O-ring is provided between the valve ball seat 30 and the valve seat 9. The ball wall of the valve ball 29 has an expansion groove 33, as shown in Figure 12. The actuator 32 drives the valve ball 29 to rotate about a rotation axis A2 transverse to the extension axis A1, the direction of rotation being shown by the arrow in Figure 10, so that the expansion groove 33 and the valve ball seat 30 form different fluid flow cross sections. The extension axis A1 is, for example, along the vertical direction in Figure 1, while the rotation axis A2 is, for example, along the horizontal direction in Figure 1, that is, the extension axis A1 is perpendicular to the rotation axis A2. As described above, the actuator 32 is mounted on the third interface surface 6. The throttling function is achieved by changing the fluid flow cross-section through the rotation of the valve ball 29 around the rotation axis A2. The rotation of the valve ball 29 can also achieve a fully open or fully closed mode. The fluid flow cross-section is formed at the contact point between the expansion groove 33 and the valve ball seat 30, and is specifically determined by the cross-sectional area of ​​the expansion groove 33 at the contact point with the valve ball seat 30, which is perpendicular to the extending axis A1.

[0068] As shown in Figure 12, the depth of the expansion groove 33 gradually changes along the rotation direction of the valve ball 29. For example, the groove depth can gradually decrease in the rotation direction of the valve ball 29 as shown in Figure 10, so that the fluid flow cross-section can gradually increase, while the groove depth gradually increases in the opposite direction of rotation, so that the fluid flow cross-section can gradually decrease. This achieves the regulation of the fluid flow rate through the second valve.

[0069] As shown in Figure 10, the valve ball 29 has a connecting channel 35, and the third channel 19 shown in Figure 7 is in fluid communication with the valve seat 9 through the connecting channel 35. Therefore, the second valve 8 is a three-way expansion ball valve.

[0070] As described above, the fluid distribution assembly of this disclosure can integrate at least the first and second valves together, for example, through a single valve block for installation and connection, and in particular, can integrate multi-way valves and throttle ball valves. Therefore, the fluid distribution assembly of this disclosure can reduce the use of piping, avoiding installation difficulties and control complexities caused by piping connections, thus reducing the cost of the vehicle thermal management system, simplifying the control strategy of the vehicle thermal management system, and offering a simple structure and convenient installation. Furthermore, the fluid distribution assembly of this disclosure is easier to install on a flow channel plate, thereby further improving the integration of the vehicle thermal management system.

[0071] Furthermore, the technical features disclosed above are not limited to the combinations of the disclosed features with other features. Those skilled in the art can also make other combinations of the technical features according to the purpose of the disclosure in order to achieve the purpose of this disclosure.

Claims

1. A fluid distribution assembly, characterized in that, The fluid distribution component includes: The valve block (1) has a first interface (10), a first chamber (101), and a second chamber (102); the first chamber (101) and the second chamber (102) are in fluid communication. The first valve (7) is installed in the first chamber (101); A second valve (8) is installed in the second chamber (102); and A valve seat (9) is installed inside the valve block (1) and abuts against the second valve (8); The second valve (8) is in fluid communication with the first interface (10) through the valve seat (9).

2. The fluid distribution assembly according to claim 1, characterized in that, The valve block (1) has a first interface surface (4), a first mounting surface (2), and a second mounting surface (3). The first interface (10) is disposed on the first interface surface (4), the first valve (7) is installed on the first mounting surface (2), and the second valve (8) is installed on the second mounting surface (3).

3. The fluid distribution assembly according to claim 2, characterized in that, The valve seat (9) has an internal channel (90); the second valve (8) is connected to the first interface (10) through the internal channel (90); the internal channel (90) is configured to bend the fluid.

4. The fluid distribution assembly according to claim 3, characterized in that, The valve seat (9) has a first opening (91) in the axial direction and a second opening (92) in the radial direction; the first opening (91) and the second opening (92) define the internal passage (90).

5. The fluid distribution assembly according to any one of claims 1 to 4, characterized in that, The second valve (8) is in fluid communication with the first interface (10) in a throttling manner.

6. The fluid distribution assembly according to claim 3, characterized in that, The valve block (1) also has a second interface surface (5), on which a second interface (12) is provided, and the second valve (8) is in fluid communication with the second interface (12).

7. The fluid distribution assembly according to claim 6, characterized in that, The first mounting surface (2) and the second mounting surface (3) are located at both ends of the valve block (1), and / or the first interface surface (4) and the second interface surface (5) are adjacent to each other.

8. The fluid distribution assembly according to claim 7, characterized in that, The valve block (1) has an extension axis (A1) and a plurality of first channels (13, 14, 15) extending along the extension axis, and the second valve (8) is in fluid communication with the first valve (7) through the corresponding first channel.

9. The fluid distribution assembly according to claim 8, characterized in that, The valve block (1) has a second channel (16, 17, 18) extending in a first direction (S1) transverse to the extension axis (A1), and the second valve (8) is in fluid communication with the first interface (10) through the corresponding second channel.

10. The fluid distribution assembly according to claim 9, characterized in that, The valve block (1) has a third channel (19) extending transversely to the extension axis (A1) and the first direction (S1) in a second direction (S2), and the second valve (8) is in fluid communication with the second interface (12) through the third channel (19).

11. The fluid distribution assembly according to claim 9, characterized in that, The valve block (1) also has a third interface surface (6) opposite to the first interface surface (4), and a third interface (23, 24) is provided on the third interface surface. The valve block (1) has a fourth channel (25, 26) extending transversely to the extension axis (A1) and opposite to the first direction (S1). The valve port of the first valve (7) is in fluid communication with the corresponding third interface through the corresponding first channel and the corresponding fourth channel, and the second valve (8) is also installed on the third interface surface (6).

12. The fluid distribution assembly according to claim 8, characterized in that, The first interface surface (4) is also provided with a fourth interface (20, 21, 22), and the valve port of the first valve (7) is in fluid communication with the corresponding fourth interface through the corresponding first channel and the corresponding second channel.

13. The fluid dispensing assembly according to claim 10, characterized in that, The valve seat (9) has a cylindrical shape extending along the extension axis (A1), and the circumferential sidewall (27) of the valve seat (9) has a plurality of through holes (28).

14. The fluid distribution assembly according to claim 13, characterized in that, The valve seat (9) is housed in the second chamber (102), and the inner wall of the second chamber (102) and the valve seat (9) form an annular channel (36) of the internal channel (90).

15. The fluid distribution assembly according to claim 13, characterized in that, The plurality of through holes (28) are evenly distributed on the circumferential sidewall (27).

16. The fluid distribution assembly according to claim 13, characterized in that, The second valve (8) includes a valve ball (29), a valve ball seat (30), a valve cover (31), and an actuator (32). The valve ball (29) and the valve seat (9) respectively abut against the two ends of the valve ball seat (30). The valve ball (29) has an expansion groove (33) on its ball wall. The actuator (32) drives the valve ball (29) to rotate about a rotation axis (A2) transverse to the extension axis (A1), so that the expansion groove (33) and the valve ball seat (30) form different fluid flow sections.

17. The fluid distribution assembly according to claim 16, characterized in that, The depth of the expansion groove (33) is gradually changing along the rotation direction of the valve ball (29).

18. The fluid distribution assembly according to claim 16, characterized in that, The valve ball (29) has a communication channel (35), and the third channel (19) is in fluid communication with the valve seat (9) through the communication channel (35).

19. The fluid distribution assembly according to claim 16, characterized in that, The first valve (7) is a multi-port valve with at least five ports.

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