Seven-way fluid valve

Abstract

The invention relates to a seven-way fluid valve (100), comprising: a valve housing (10) defining a cylindrical valve chamber (11) having a bottom wall (12) and a cylindrical side wall (13) in which seven ports are opened; and a cylindrical valve core (20), wherein the valve core defines eight fluid channels and is rotatably arranged in the valve chamber; wherein the eight fluid channels and the seven ports are arranged such that by rotating the spool (20), the seven-way fluid valve can be switched between a plurality of different operating modes, in each operating mode, each pair of ports of at least three pairs of ports of the seven ports is in fluid communication through a corresponding fluid channel, and in each operating mode, each pair of ports of at least three pairs of ports of the seven ports is in fluid communication through a corresponding fluid channel. Other ports are cut off; and the plurality of working modes comprise a proportional adjustment mode.

Description

Technical Field

[0001] The present invention relates to the field of multi-way fluid valves, and in particular to a seven-way fluid valve having multiple working modes, in particular a proportional regulation mode. Background Art

[0002] With the development of new energy vehicle technology, coolant control fluid valves, especially multi-way coolant flow control water valves, used in thermal management integrated modules of new energy vehicles have become key components of new energy vehicles.

[0003] At present, although the intelligent multi-way coolant flow control water valve is mainly based on a columnar valve core, the functions that can be realized are relatively simple and there is no proportional adjustment mode. In addition, the valve core diameter is large and the driving torque is relatively large. Summary of the invention

[0004] In order to overcome the above problems, it is necessary to provide a new type of seven-way fluid valve, such as a coolant flow control water valve, which not only has a relatively small valve core size, but also can realize multiple different working modes including a proportional adjustment mode by rotating the valve core.

[0005] To this end, the present invention provides a seven-way fluid valve, comprising: a valve housing, which defines a cylindrical valve chamber, the valve chamber having a bottom wall and a cylindrical side wall, wherein seven ports are opened in the side wall; a cylindrical valve core, wherein the valve core defines eight fluid channels and is rotatably arranged in the valve chamber; wherein the eight fluid channels and the seven ports are arranged so that by rotating the valve core, the seven-way fluid valve can be switched between multiple different working modes, wherein in each of the working modes, each pair of ports of at least three pairs of ports among the seven ports are fluidly connected through corresponding fluid channels, while the remaining ports are cut off; and the multiple working modes include a proportional regulation mode.

[0006] According to one embodiment of the present invention, the seven ports include a first group of ports, a second group of ports and a third group of ports that are sequentially spaced apart from the top end toward the bottom end of the valve housing; wherein the first group of ports includes a first port, a second port and a third port that are spaced apart along the circumference of the side wall; the second group of ports includes a fourth port, a fifth port and a sixth port that are spaced apart along the circumference of the side wall; the third group of ports includes a seventh port that is arranged close to the bottom wall; wherein the first port and the fourth port are aligned along the axial direction of the valve chamber, and the

[0007] The second port, the fifth port, and the seventh port are aligned in the axial direction of the valve chamber, and the third port and the sixth port are aligned in the axial direction of the valve chamber.

[0008] In one embodiment of the present invention, the valve core includes a first end and an opposite second end, wherein the second end of the valve core is close to the bottom end of the valve housing, and the eight fluid channels include a first group of fluid channels close to the first end, a second group of fluid channels close to the second end, and a third group of fluid channels extending between the first end and the second end; the first group of fluid channels includes a first fluid channel, a second fluid channel and a third fluid channel extending circumferentially along the outer peripheral wall of the valve core and spaced apart from each other and opening at the outer peripheral wall of the valve core; the second group of fluid channels includes a fourth fluid channel, a fifth fluid channel and a sixth fluid channel extending circumferentially along the outer peripheral wall of the valve core and spaced apart from each other and opening at the outer peripheral wall of the valve core; and the third group of fluid channels includes a seventh fluid channel opening at the outer peripheral wall of the valve core and a central fluid channel extending along the central axis of the valve core and opening at the end face of the second end; wherein the central fluid channel is fluidly connected to the second fluid channel, the fourth fluid channel and the seventh port, and the first fluid channel to the seventh fluid channel are all located radially outside the central fluid channel.

[0009] According to a preferred solution of the present invention, the second fluid channel is located between the first fluid channel and the third fluid channel; the seventh fluid channel is located between the fourth fluid channel and the sixth fluid channel; and the fifth fluid channel is adjacent to the fourth fluid channel.

[0010] According to one embodiment of the present invention, the plurality of different working modes include a first working mode, wherein the first working mode is a full-pass filling mode, wherein in the first working mode: the second port is in fluid communication with the first port and the third port through the third fluid channel; the sixth port is in fluid communication with the third port through the seventh fluid channel; the seventh port is in fluid communication with the fifth port and the sixth port through the fourth fluid channel and the central fluid channel; and the fourth port is in fluid communication with the fifth port through the fifth fluid channel. In the first working mode, the angle of the valve core relative to the valve housing is defined as 0°.

[0011] According to one embodiment of the present invention, the multiple different working modes also include a second working mode, and the seven-way fluid valve can be switched to the second working mode by rotating the valve core in the first working mode by 13° in a clockwise direction. In the second working mode: the first port is fluidly connected to the second port through the third fluid channel; the sixth port is fluidly connected to the third port through the seventh fluid channel; the seventh port is fluidly connected to the fifth port through the fourth fluid channel and the central fluid channel; and the fourth port is cut off.

[0012] According to one embodiment of the present invention, the multiple different working modes also include a third working mode, and the seven-way fluid valve can be converted to the third working mode by rotating the valve core in the first working mode by 163° in a clockwise direction. In the third working mode: the second port is fluidically connected to the third port through the first fluid channel; the seventh port is fluidically connected to the third port through the second fluid channel and the center fluid channel; the fourth port is fluidically connected to the fifth port through the sixth fluid channel; and the first port is cut off.

[0013] According to one embodiment of the present invention, the multiple different working modes also include a fourth working mode, and the seven-way fluid valve can be converted to the fourth working mode by rotating the valve core in the first working mode by 228° in a clockwise direction. In the fourth working mode, the first port is fluidically connected to the second port through the first fluid channel; the seventh port is fluidically connected to the third port through the second fluid channel and the central fluid channel; the fourth port is fluidically connected to the fifth port through the sixth fluid channel; and the sixth port is cut off.

[0014] According to a preferred solution of the present invention, the plurality of different working modes also include a fifth working mode, and the seven-way fluid valve can be switched to the fifth working mode by rotating the valve core in the first working mode in a clockwise direction by an angle α, wherein 228°>α>163°, and the fifth working mode is a proportional adjustment mode, and in the proportional adjustment mode: the second port is fluidly connected to the first port and the third port through the first fluid channel at the same time; the seventh port is fluidly connected to the third port through the second fluid channel and the central fluid channel; the fourth port is fluidly connected to the fifth port through the sixth fluid channel; and the sixth port is cut off. As the rotation degree of the valve core increases, the opening between the second port and the third port becomes smaller and smaller, while the opening between the second port and the first port becomes larger and larger.

[0015] According to one embodiment of the present invention, the seven-way fluid valve also includes a seal arranged between the valve core and the valve housing, wherein the cross-section of the seal is an arc-shaped, and the seal has six openings corresponding to the first group of ports and the second group of ports and is fixed to one side of the side wall where the first group of ports and the second group of ports are provided.

[0016] Due to the adoption of the above technical solution, the present invention can produce at least one of the following beneficial technical effects: in the seven-way fluid valve, through reasonable flow channel design and angle distribution, the diameter of the valve core is small, and a proportional adjustment mode within a range of 65° can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Further features and advantages of the present invention will become more apparent from the following detailed description with reference to the accompanying drawings:

[0018] Figure 1 A perspective view of an embodiment of a seven-way fluid valve according to the present invention;

[0019] Figure 2 for Figure 1 A front view of the port side of the seven-way fluid valve shown;

[0020] Figure 3 for Figure 1 An exploded view of a seven-way fluid valve is shown;

[0021] Figure 4 A three-dimensional diagram of an embodiment of a valve core according to the present invention;

[0022] Figure 5 for Figure 4 Another perspective view of the valve core shown;

[0023] Figure 6a and Figure 6b It is a schematic diagram of the on-off state of each port when the seven-way fluid valve according to the present invention is in the first working mode;

[0024] Figure 7a and Figure 7b It is a schematic diagram of the on-off state of each port when the seven-way fluid valve according to the present invention is in the second working mode;

[0025] Figure 8a and Figure 8b It is a schematic diagram of the on-off state of each port when the seven-way fluid valve according to the present invention is in the third working mode;

[0026] Figure 9a and Figure 9b is a schematic diagram of the on-off state of each port when the seven-way fluid valve according to the present invention is in the fourth working mode; and

[0027] Fig.10a and Fig.10b Schematic diagram of the on-off state of each port when the seven-way fluid valve according to the present invention is in the fifth working mode. DETAILED DESCRIPTION

[0028] The following will describe a multi-way fluid valve implemented according to the present invention, specifically a seven-way fluid valve, such as a seven-way proportional control valve, with reference to the accompanying drawings and by way of example. In the following description, many specific details are set forth so that those skilled in the art can more fully understand the present invention. However, it is obvious to those skilled in the art that the implementation of the present invention may not have some of these specific details. In addition, it should be understood that the present invention is not limited to the specific embodiments described. On the contrary, it is contemplated that the present invention may be implemented with any combination of the following features and elements, regardless of whether they relate to different embodiments.

[0029] Figure 1 A perspective view of an embodiment of a seven-way fluid valve 100 according to the present invention, specifically a seven-way proportional regulating valve, such as a coolant flow control water valve, is shown. Figure 2 for Figure 1 1 is an exploded view of a seven-way fluid valve 100. As can be seen from the figure, the seven-way fluid valve 100 includes a valve housing 10, a valve core 20 and a sealing member 30. The valve housing 10 has a first housing end 101 (referred to as the bottom end) and an opposite second housing end (referred to as the top end), and defines a cylindrical valve chamber 11, the valve chamber having a bottom wall and a cylindrical side wall 12 extending from the bottom wall, wherein seven ports are opened in the side wall; and the first housing end is a closed end, defining the bottom wall of the valve chamber 11, and the second housing end is completely open to rotatably receive the valve core 20 in the valve chamber 11. Preferably, the valve housing 10 has a mounting portion 40 extending from the side wall of the valve housing and tangent thereto, and the seven ports extend to the mounting end surface of the mounting portion 40.

[0030] Figure 3 The layout of seven ports in the side wall 12 is schematically shown, and the seven ports basically correspond to the layout of the openings in the mounting end surface of the mounting portion, and are shown here with the same reference numerals. In the embodiment shown in the figure, the seven ports include a first group of ports a, a second group of ports b, and a third group of ports c, which are arranged in sequence from the bottom end to the top end of the valve housing. The first group of ports a includes a first port 1, a second port 2, and a third port 3 arranged in a circumferential direction of the side wall, that is, the first group of ports are located in the same plane (or at the same height); the second group of ports b includes a fourth port 4, a fifth port 5, and a sixth port 6 arranged in a circumferential direction of the side wall 12, and the second group of ports are also located in the same plane (or at the same height); the third group of ports c includes a seventh port 7 arranged near the bottom wall (not shown); the first port 1 and the fourth port 4 are aligned along the axial direction of the valve chamber, the second port 2, the fifth port 5, and the seventh port 7 are aligned along the axial direction of the valve chamber, and the third port 3 and the sixth port 6 are aligned along the axial direction of the valve chamber.

[0031] In a preferred embodiment, the seal 30 is constructed as an arched sheet structure with a circular arc cross section, and the seal is provided with six openings corresponding to the first group of ports and the second group of ports in the valve housing 10. Here, "corresponding" means that the layout and shape of the six openings in the seal are exactly the same as the layout and shape of the first group of ports and the second group of ports in the valve housing. The seal 30 is fixedly mounted to the side of the valve housing provided with the first group of ports and the second group of ports and facing the valve core 20, that is, the seal 30 is arranged between the valve core 20 and the valve housing 10. For example, the seal 30 can be in the form of a PTFE / EPDM composite gasket, using a high-grade EPDM ethylene propylene diene monomer rubber body, which not only maintains good elastic properties at high and low temperatures, but also has very good chemical resistance and corrosion resistance.

[0032] Figure 4 and Figure 5 A preferred embodiment of the valve core 20 according to the present invention is shown. As can be seen from the figure, the valve core 20 is cylindrical, and the valve core 20 has a first end 21 and an opposite second end 22, and a central rotation axis 23 extending beyond the first end 21. In the assembled state, the second end 22 of the valve core 20 is close to the bottom end 101 of the valve housing, and there is a certain gap between the second end 22 of the valve core 20 and the bottom wall of the valve housing 20. Advantageously, the valve core 20 is formed with eight fluid channels, and the eight fluid channels include a first group of fluid channels close to the first end 21, a second group of fluid channels close to the second end 22, and a third group of fluid channels extending between the first end 21 and the second end 22. These fluid channels are defined by a plurality of axial partitions extending axially and a plurality of radial partitions extending radially formed in the valve core, wherein the plurality of axial partitions are parallel to the central rotation axis 23, and the plurality of radial partitions are perpendicular to the central rotation axis 23.

[0033] See also Figure 4 and Figure 5 Combined with Figure 6a and Figure 6b, the first group of fluid channels includes a first fluid channel 1', a second fluid channel 2' and a third fluid channel 3' extending circumferentially along the outer peripheral wall of the valve core 20, and the three fluid channels are spaced apart from each other and open at the outer peripheral wall of the valve core 20. As can be seen from the figure, the shapes and sizes of the first fluid channel and the third fluid channel are basically the same and are located on both sides of the second fluid channel 2' and are basically symmetrical about the second fluid channel. Here, each fluid channel in the first group of fluid channels can also be considered to be located at the same level (height). The second group of fluid channels includes a fourth fluid channel 4', a fifth fluid channel 5' and a sixth fluid channel 6' extending circumferentially along the outer peripheral wall of the valve core 20, and the three fluid channels are spaced apart from each other and open at the outer peripheral wall of the valve core 20. As can be seen from the figure, the shape and size of the sixth fluid channel are basically the same as those of the first fluid channel and the third fluid channel. Correspondingly, each fluid channel in the second group of fluid channels can also be considered to be located at the same level (height).

[0034] In this embodiment, the third group of fluid channels includes a seventh fluid channel 7' opened at the outer peripheral wall of the valve core and a central fluid channel 8' extending along the central axis of the valve core and opened at the end surface of the second end. As can be seen from the figure, the seventh fluid channel 7' extends from the level where the first group of fluid channels is located to the level where the second group of fluid channels is located (see in particular Figure 4 ); the central fluid channel 8' is in fluid communication with the second fluid channel 2', the fourth fluid channel 4' and the seventh port 7, and the first fluid channel to the seventh fluid channel are all located radially outside the central fluid channel 8'. The fourth fluid channel 4' is located between the fifth fluid channel 5' and the seventh fluid channel 7', and the seventh fluid channel 7' is located between the fourth fluid channel 4' and the sixth fluid channel 6'. For example, the cross-section of the fourth fluid channel can be roughly fan-shaped. It should be understood that the extension size of the first group of fluid channels is associated with the size of the corresponding first group of ports, while the extension size of the second group of fluid channels is associated with the size of the corresponding second group of ports. The size of each port depends on the specific flow requirements.

[0035] In the present invention, through the coordination of the layout of eight fluid channels in the valve core 20 and the layout of seven ports in the valve housing 10, when the valve core 20 is rotated in the valve chamber, the seven-way fluid valve 100 can be regularly switched between multiple different working modes (positions).

[0036] Figure 6a and Figure 6b The first working mode of the seven-way fluid valve 100 is shown. The first working mode is a full-pass filling mode. The full-pass filling mode can be used to add coolant to the whole vehicle before the vehicle is off the production line, so that the entire thermal management system is fully filled with coolant. Figure 6aFIG. 1 is a cross-sectional view of the seven-way fluid valve 100 along the plane where the first group of ports a are located. It can be seen from the figure that the first group of fluid channels is aligned with the first group of ports a; Figure 6b 2 is a view of the seven-way fluid valve 100 cut along the plane where the second group of ports b is located. It can be seen from the figure that the second group of fluid channels is aligned with the second group of ports b. In the first working mode, the rotation angle of the valve core 20 is set to 0°, the second port 2 is in fluid communication with the first port 1 and the third port 3 through the third fluid channel 3', the sixth port 6 is in fluid communication with the third port 3 through the seventh fluid channel 7'; the seventh port 7 is in fluid communication with the fifth port 5 and the sixth port 6 through the central fluid channel 8' and the fourth fluid channel 4'; and the fourth port 4 is in fluid communication with the fifth port 5 through the fifth fluid channel 5'.

[0037] Figure 7a and Figure 7b The second working mode of the seven-way fluid valve 100 is shown, wherein the rotation angle of the valve core 20 is 13°, that is, the valve core 20 in the first working mode is rotated 13° in the clockwise direction to switch the seven-way fluid valve to the second working mode. In the second working mode, the first port 1 is in fluid communication with the second port 2 through the third fluid channel 3'; the sixth port 6 is in fluid communication with the third port 3 through the seventh fluid channel 7'; the seventh port 7 is in fluid communication with the fifth port 5 through the central fluid channel 8' and the fourth fluid channel 4'; and the fourth port 4 is blocked.

[0038] Figure 8a and Figure 8b The third working mode of the seven-way fluid valve 100 is shown, that is, the valve core 20 in the first working mode is rotated 163° clockwise to switch the seven-way fluid valve to the third working mode. In the third working mode, the second port 2 is in fluid communication with the third port 3 through the first fluid channel 1'; the seventh port 7 is in fluid communication with the third port 3 through the central fluid channel 8' and the second fluid channel 2'; the fourth port 4 is in fluid communication with the fifth port 5 through the sixth fluid channel 6'; and the first port 1 is cut off.

[0039] Figure 9a and Figure 9b The fourth working mode of the seven-way fluid valve 100 is shown, that is, the valve core 20 in the first working mode is rotated 228° clockwise to switch the seven-way fluid valve to the fourth working mode. In the fourth working mode, the first port 1 is in fluid communication with the second port 2 through the first fluid channel 1'; the seventh port 7 is in fluid communication with the third port 3 through the central fluid channel 8' and the second fluid channel 2'; the fourth port 4 is in fluid communication with the fifth port 5 through the sixth fluid channel 6'; and the sixth port 6 is blocked.

[0040] Fig.10a and Fig.10b The fifth working mode of the seven-way fluid valve 100 is shown, that is, the valve core 20 in the first working mode is rotated clockwise by an angle α to convert the seven-way fluid valve to the fifth working mode, wherein 228°>α>163°, and the fifth working mode is a proportional adjustment mode. In the fifth working mode, the second port 2 is in fluid communication with the first port 1 and the third port 3 through the first fluid channel 1'; the seventh port 7 is in fluid communication with the third port 3 through the central fluid channel 8' and the second fluid channel 2'; the fourth port 4 is in fluid communication with the fifth port 5 through the sixth fluid channel 6'; and the sixth port 6 is cut off. In the proportional adjustment mode, as the rotation degree of the valve core increases, the water inlet opening area of ​​the second port 2 remains unchanged, while the opening of the third port 3 becomes smaller and smaller, and the opening of the first port 1 becomes larger and larger. Specifically, when the valve core 20 rotates 163° in the clockwise direction, the second port 2 is only in fluid communication with the third port 3, but not in fluid communication with the first port 1. As the valve core rotates more, the coolant flow from the second port 2 to the third port 3 decreases, while the coolant flow from the second port 2 to the first port 1 increases, until the valve core rotates 228°, the second port 2 is only in fluid communication with the first port 1, but no longer in fluid communication with the third port 3. In the case of 228°>α>163°, as the valve core rotates the angle α more, the seventh port 7 is always in communication with the third port 3, and the fourth port 4 is always in communication with the fifth port 5.

[0041] It should be understood that the various working modes of the seven-way fluid valve 100 may also include other working modes in which the valve core is rotated to other suitable angles different from the above rotation angles, and is not limited to the five working modes given above.

[0042] Although the present invention has been disclosed as above with preferred embodiments, the present invention is not limited thereto. Any combination, change and modification made by any person skilled in the art without departing from the spirit and scope of the present invention shall be included in the protection scope of the present invention, and therefore the protection scope of the present invention shall be subject to the scope defined by the claims.

Claims

1. A seven-way fluid valve (100), include: A valve housing (10) defining a cylindrical valve chamber (11) having a bottom wall and a cylindrical side wall (13) with seven ports formed therein; a cylindrical valve core (20), wherein the valve core defines eight fluid passages and is rotatably disposed within the valve chamber; Wherein, the eight fluid channels and the seven ports are arranged so that by rotating the valve core (20), the seven-way fluid valve can be switched between a plurality of different working modes, wherein in each of the working modes, each pair of ports in at least three pairs of ports among the seven ports are fluidly connected via corresponding fluid channels, while the remaining ports are cut off; and the plurality of working modes include a proportional regulation mode.

2. The seven-way fluid valve (100) according to claim 1, in, The seven ports include a first group of ports (a), a second group of ports (b) and a third group of ports (c) which are sequentially spaced apart from the bottom end toward the top end of the valve housing; wherein the first group of ports (a) comprises a first port (1), a second port (2) and a third port (3) arranged at intervals along the circumference of the side wall; the second group of ports (b) comprises a fourth port (4), a fifth port (5) and a sixth port (6) arranged at intervals along the circumference of the side wall; and the third group of ports (c) comprises a seventh port (7) arranged close to the bottom wall (12); The first port and the fourth port are aligned along the axial direction of the valve chamber, the second port, the fifth port and the seventh port are aligned along the axial direction of the valve chamber, and the third port and the sixth port are aligned along the axial direction of the valve chamber.

3. The seven-way fluid valve (100) according to claim 2, in, The valve core (20) comprises a first end (21) and an opposite second end (22), wherein the second end (22) of the valve core is close to the bottom end of the valve housing, and the eight fluid channels comprise a first group of fluid channels close to the first end (21), a second group of fluid channels close to the second end (22), and a third group of fluid channels extending between the first end and the second end; The first group of fluid channels comprises a first fluid channel (1'), a second fluid channel (2') and a third fluid channel (3') extending circumferentially along the outer peripheral wall of the valve core (20) and spaced apart from each other and opening at the outer peripheral wall of the valve core; The second group of fluid channels comprises a fourth fluid channel (4'), a fifth fluid channel (5') and a sixth fluid channel (6') extending circumferentially along the outer peripheral wall of the valve core and spaced apart from each other and opening at the outer peripheral wall of the valve core; and The third group of fluid channels includes a seventh fluid channel (7') opened at the outer peripheral wall of the valve core and a central fluid channel (8') extending along the central axis of the valve core and opened at the end surface of the second end; The central fluid channel (8') is fluidically connected to the second fluid channel (2'), the fourth fluid channel (4') and the seventh port (7), and the first to seventh fluid channels are all located radially outside the central fluid channel (8').

4. The seven-way fluid valve (100) according to claim 3, in, The second fluid channel (2') is located between the first fluid channel (1') and the third fluid channel (3'); the seventh fluid channel (7') is located between the fourth fluid channel (4') and the sixth fluid channel (6'); and the fifth fluid channel (5') is adjacent to the fourth fluid channel (4').

5. The seven-way fluid valve (100) according to claim 3 or 4, in, The plurality of different working modes include a first working mode, wherein the first working mode is a full-flow filling mode, wherein in the first working mode: The second port (2) is in fluid communication with the first port (1) and the third port (3) through the third fluid channel (3'); The sixth port (6) is in fluid communication with the third port (3) through the seventh fluid channel (7'); The seventh port (7) is in fluid communication with the fifth port (5) and the sixth port (6) through the fourth fluid channel (4') and the central fluid channel (8'); and The fourth port (4) is in fluid communication with the fifth port (5) through the fifth fluid channel (5').

6. The seven-way fluid valve (100) according to claim 5, in, The plurality of different working modes also include a second working mode, and the seven-way fluid valve can be switched to the second working mode by rotating the valve core (20) in the first working mode by 13 degrees in a clockwise direction. In the second working mode: The first port (1) is in fluid communication with the second port (2) through the third fluid channel (3'); The sixth port (6) is in fluid communication with the third port (3) through the seventh fluid channel (7'); The seventh port (7) is in fluid communication with the fifth port (5) through the fourth fluid channel (4') and the central fluid channel (8'); and The fourth port (4) is closed.

7. The seven-way fluid valve (100) according to claim 6, in, The plurality of different working modes also include a third working mode, and the seven-way fluid valve can be switched to the third working mode by rotating the valve core (20) in the first working mode by 163 degrees in a clockwise direction. In the third working mode: The second port (2) is in fluid communication with the third port (3) through the first fluid channel (1'); The seventh port (7) is in fluid communication with the third port (3) through the second fluid channel (2') and the central fluid channel (8'); The fourth port (4) is in fluid communication with the fifth port (5) through the sixth fluid channel (6'); and The first port (1) is closed.

8. The seven-way fluid valve (100) according to claim 7, in, The plurality of different working modes also include a fourth working mode, wherein the seven-way fluid valve can be switched to the fourth working mode by rotating the valve core (20) in the first working mode by 228 degrees in a clockwise direction. In the fourth working mode, The first port (1) is in fluid communication with the second port (2) via the first fluid channel (1'); The seventh port (7) is in fluid communication with the third port (3) through the second fluid channel (2') and the central fluid channel (8'); The fourth port (4) is in fluid communication with the fifth port (5) through the sixth fluid channel (6'); and The sixth port (6) is closed.

9. The seven-way fluid valve (100) according to claim 8, in, The plurality of different working modes also include a fifth working mode, wherein the seven-way fluid valve can be switched to the fifth working mode by rotating the valve core (20) in the first working mode in a clockwise direction by an angle α, wherein 228°>α>163°, the fifth working mode is a proportional regulation mode, and in the fifth working mode: the second port being in fluid communication with the first port and the second port through the first fluid passage; The seventh port (7) is in fluid communication with the third port (3) through the second fluid channel (2') and the central fluid channel (8'); The fourth port (4) is in fluid communication with the fifth port (5) through the sixth fluid channel (6'); and The sixth port (6) is closed.

10. The seven-way fluid valve (100) according to any one of claims 2 to 4, in, The seven-way fluid valve also includes a seal (30) arranged between the valve core (20) and the valve housing (10), wherein the cross-section of the seal is an arc shape, and the seal has six openings corresponding to the first group of ports (a) and the second group of ports (b) and is fixed to a side of the side wall of the valve housing where the first group of ports and the second group of ports are provided.

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