A regulating valve, a humidifier and a fuel cell system

Abstract

The present application discloses a regulating valve, a humidifier and a fuel cell system, wherein the regulating valve comprises: a core cavity and a first flow channel, a second flow channel and a third flow channel respectively connected to the core cavity are provided in the valve seat, a first valve seat opening connected to the first flow channel, a second valve seat opening connected to the second flow channel and a third valve seat opening connected to the third flow channel are provided in the valve seat, and the first valve seat opening and the second valve seat opening are located on the same side of the valve seat; a valve core is rotatably arranged in the core cavity, and a first valve opening and a second valve opening are provided in the valve core that are connected to each other, and the valve core rotates relative to the valve seat so that the first valve opening is connected to the first flow channel or the second flow channel correspondingly, and the second valve opening is used to connect to the third flow channel. Two flow channels that can be adjusted to be on and off are formed in the valve seat, and the first valve seat opening and the second valve seat opening are connected to the humidifier at different positions, and the cathode reaction gas flows through different lengths of the path, so that the cathode reaction gas has different transmission efficiencies with the humid and hot tail gas, thereby achieving the adjustment of the humidity of the cathode reaction gas.

Description

Technical Field

[0001] The present application belongs to the field of fuel cell technology, and in particular relates to a regulating valve, a humidifier and a fuel cell system. Background Art

[0002] In a fuel cell, a humidifier is used to increase the humidity of the cathode reaction gas, so that the humidity of the cathode reaction gas is maintained within a suitable range to ensure the smooth progress of the electrochemical reaction. In the related art, the humidifier adopts a membrane humidification method, using humid hot exhaust gas to humidify the cathode reaction gas, and performs heat and mass transfer in the humidifier to increase the temperature and humidity of the cathode reaction gas. However, this type of humidifier cannot adjust the humidity by itself, and it is necessary to add pipelines and valves to adjust the humidity of the cathode reaction gas after humidification by adjusting the amount of humid hot exhaust gas and / or cathode reaction gas, resulting in the humidification equipment having the defects of complex pipelines, many leakage points, large size, and high cost.

[0003] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present disclosure, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Summary of the invention

[0004] The present application aims to at least to some extent solve the technical problems of humidification equipment with complex pipelines, multiple leaks, large volume and high cost. To this end, the present application provides a regulating valve, a humidifier and a fuel cell system.

[0005] An embodiment of the present application provides a regulating valve, which comprises: a valve seat, a core cavity and a first flow channel, a second flow channel and a third flow channel respectively connected to the core cavity, and the valve seat is provided with a first valve seat opening connected to the first flow channel, a second valve seat opening connected to the second flow channel and a third valve seat opening connected to the third flow channel, the first valve seat opening and the second valve seat opening are located on the same side of the valve seat; and a valve core, the valve core is rotatably arranged in the core cavity, the valve core is provided with a first valve opening and a second valve opening connected to each other, and the rotation of the valve core relative to the valve seat can make the first valve opening connected to the first flow channel or the second flow channel correspondingly, and the second valve opening is used to connect to the third flow channel.

[0006] In some embodiments, the valve seat is provided with a fourth valve seat port connected to the core cavity, and the fourth valve seat port, the first valve seat port, and the second valve seat port are located on the same side of the valve seat; the valve core is provided with a fourth valve port connected to the second valve port, and the valve core can rotate relative to the valve seat so that the fourth valve port is connected to the fourth valve seat port accordingly.

[0007] In some embodiments, the valve core includes a bottom core body having a hollow cylindrical structure and a top core body having a hollow cylindrical structure; wherein the first valve port is opened on the side wall of the bottom core body, the fourth valve port is opened on the bottom surface of the bottom core body, and the second valve port is opened on the side wall of the top core body.

[0008] In some embodiments, the first valve ports are distributed over a range of less than or equal to 90° on the side wall of the bottom core.

[0009] In some embodiments, the fourth valve seat opening is an arc-shaped opening or a fan-shaped opening with an angle of less than or equal to 90°, and the fourth valve port is an arc-shaped opening or a fan-shaped opening with an angle of less than or equal to 90°; or, the fourth valve seat opening is two arc-shaped openings or fan-shaped openings that are oppositely arranged and are less than or equal to 90°, and the fourth valve port is two arc-shaped openings or fan-shaped openings that are oppositely arranged and are less than or equal to 90°; and when the first valve port is not connected to the first flow channel or the second flow channel, the fourth valve port is connected to the fourth valve seat port.

[0010] In some embodiments, the valve core further includes a transmission shaft disposed on the top core body, and the transmission shaft passes through the core cavity and is located outside the valve seat.

[0011] An embodiment of the present application also provides a humidifier, which includes: a shell, a humidification chamber is provided in the shell, a cathode reaction gas inlet and a cathode reaction gas outlet connected to the humidification chamber are provided on the shell, a membrane tube is arranged in the humidification chamber, and a humid hot exhaust gas inlet and a humid hot exhaust gas outlet are provided on the shell; and the above-mentioned regulating valve, the regulating valve is arranged on the shell, and the first valve seat port and the second valve seat port of the regulating valve are connected to the humidification chamber through the cathode reaction gas inlet, or the first valve seat port and the second valve seat port of the regulating valve are connected to the humidification chamber through the cathode reaction gas outlet.

[0012] In some embodiments, the valve seat is provided with a fourth valve seat opening connected to the valve core cavity, and the fourth valve seat opening, the first valve seat opening, and the second valve seat opening are located on the same side of the valve seat; the valve core is provided with a fourth valve opening connected to the second valve opening, and the valve core rotates relative to the valve seat to make the first valve opening connected to the first flow channel or the second flow channel correspondingly, or to make the fourth valve port connected to the fourth valve seat opening; the fourth valve seat opening is connected to the humidification chamber.

[0013] In some embodiments, the regulating valve is disposed on a side of the housing opposite to the cathode reactant gas inlet.

[0014] In some embodiments, any one of the first valve seat opening, the second valve seat opening, and the fourth valve seat opening is disposed opposite to the cathode reactant gas inlet.

[0015] An embodiment of the present application also provides a fuel cell system, which includes the above-mentioned humidifier.

[0016] The embodiments of the present application have at least the following beneficial effects:

[0017] The regulating valve is provided with a first valve seat opening and a second valve seat opening at the same time. By rotating the valve core relative to the valve seat, the first valve seat opening is connected to the first flow channel or the second valve seat opening is connected to the second flow channel, thereby forming two adjustable flow channels in the valve seat. After the regulating valve is set in the humidifier, the first valve seat opening and the second valve seat opening are connected to the humidifier at different positions, so the length of the flow path of the cathode reaction gas passing through the humidifier and entering the regulating valve is different. The transmission efficiency of the cathode reaction gas and the humid and hot exhaust gas is adjusted by adjusting the flow path length of the cathode reaction gas, thereby achieving the adjustment of the humidity of the cathode reaction gas. In other words, by setting a regulating valve in the humidifier, the humidity of the cathode reaction gas can be self-regulated, which can reduce the control difficulty and pressure fluctuation of the humidifier, and can also avoid setting a relatively large bypass pipeline and valve to reduce the leakage point and cost of the humidifier. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following is a brief introduction to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 A bottom view of a valve seat in a regulating valve in an embodiment of the present application is shown;

[0020] Figure 2 Shows Figure 1 A top view of the valve seat in the middle regulating valve;

[0021] Figure 3 Shows Figure 1 Schematic diagram of the cross-sectional structure of the valve seat in the middle regulating valve;

[0022] Figure 4 A schematic diagram of the three-dimensional structure of a valve core in a regulating valve in an embodiment of the present application is shown;

[0023] Figure 5 Shows Figure 4 A schematic diagram of the cross-sectional structure of the valve core;

[0024] Figure 6 Shows Figure 4 A bottom view of the valve core in FIG.

[0025] Figure 7 A schematic diagram showing a regulating state of a regulating valve in an embodiment of the present application is shown;

[0026] Figure 8 Shows Figure 7 Bottom view of the middle regulating valve;

[0027] Fig. 9 Another schematic diagram of regulating state of the regulating valve in the embodiment of the present application is shown;

[0028] Fig.10 Shows Fig. 9 Bottom view of the middle regulating valve;

[0029] Fig.11 A schematic diagram showing another regulating state of the regulating valve in the embodiment of the present application is shown;

[0030] Fig.12 Shows Fig.11 Bottom view of the middle regulating valve;

[0031] Fig.13 Shows Fig.12 Schematic diagram of the cross section of the working principle of the membrane tube of the medium humidifier;

[0032] Fig.14 Shows Fig.12 A schematic diagram of the first humidity adjustment path of the humidifier;

[0033] Fig.15 Shows Fig.12 Schematic diagram of the second humidity control path of the medium humidifier;

[0034] Fig.16 Shows Fig.12 Schematic diagram of the third humidity control path of the medium humidifier;

[0035] Fig.17 A schematic diagram of the path architecture of the cathode reaction gas in the fuel cell system in an embodiment of the present application is shown.

[0036] Reference numerals:

[0037] 1000, regulating valve; 100, valve seat; 110, core cavity; 111, fourth valve seat opening; 120, first flow channel; 121, first valve seat opening; 130, second flow channel; 131, second valve seat opening; 140, third flow channel; 141, third valve seat opening; 151, valve seat bottom wall; 152, valve seat side wall; 153, valve seat top wall; 154, valve seat partition; 200, valve core; 210, bottom core body; 21 1. First valve port; 212. Fourth valve port; 213. Bottom surface of bottom core; 214. Side wall of bottom core; 215. Bottom flow channel; 220. Top core; 221. Top surface of top core; 222. Side wall of top core; 223. Second valve port; 230. Drive shaft; 300. Motor; 2000. Humidifier; 2100. Shell; 2110. Humidifier chamber; 2120. Cathode reaction gas inlet 2130, potting baffle; 2140, wet and hot exhaust gas inlet flow channel; 2150, wet and hot exhaust gas outlet flow channel; 2160, cathode reaction gas outlet; 2161, first cathode reaction gas outlet; 2162, second cathode reaction gas outlet; 2163, fourth cathode reaction gas outlet; 2200, membrane tube; 2210, wet and hot exhaust gas inlet; 2220, wet and hot exhaust gas outlet; 3100, air filter; 32 00, air flow meter; 3300, air compressor; 3400, intercooler; 3510, stack inlet humidity sensor; 3520, stack outlet humidity sensor; 3600, fuel cell; 3610, cathode; 3611, cathode reaction gas stack inlet; 3612, hot and humid exhaust gas stack outlet; 3620, anode; 3710, pressure relief valve; 3720, back pressure valve; 3800, mixing device; 3900, controller. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0039] In addition, the present application may repeat reference numbers and / or reference letters in different examples, and such repetition is for the purpose of simplicity and clarity, and does not in itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present application provides various specific examples of processes and materials, but those of ordinary skill in the art may recognize the application of other processes and / or the use of other materials.

[0040] The present application is described below with reference to the accompanying drawings and specific embodiments:

[0041] As global environmental and energy issues become increasingly severe, the fuel cell 3600 vehicle is considered to be the most promising energy power device in the future due to its advantages such as being pollution-free, high energy conversion efficiency, and a wide range of raw material sources.

[0042] In the fuel cell 3600, the humidifier 2000 is used to increase the humidity of the cathode reaction gas, so that the humidity of the cathode reaction gas is maintained within a suitable range to ensure the smooth progress of the electrochemical reaction. In the related art, the humidifier 2000 adopts a membrane humidification method, uses humid hot exhaust gas to humidify the cathode reaction gas, and performs heat and mass transfer in the humidifier 2000 to increase the temperature and humidity of the cathode reaction gas. However, this type of humidifier 2000 itself cannot adjust the humidity, and it is necessary to add pipelines and valves to adjust the humidity of the cathode reaction gas after humidification by adjusting the amount of humid hot exhaust gas and / or cathode reaction gas, resulting in the humidification equipment having the defects of complex pipelines, many leakage points, large volume, and high cost.

[0043] In the case where the humidity of the hot and humid exhaust gas is too high, one solution is to add a bypass pipe and a valve so that part of the hot and humid exhaust gas bypasses the humidifier 2000 through the bypass pipe to be discharged directly, and the humidity of the cathode reaction gas after humidification is adjusted by controlling the amount of the hot and humid exhaust gas passing through. This method of adjusting the humidity of the cathode reaction gas not only increases the cost of the pipe and valve, increases the risk of leakage, but also leads to the waste of heat of the hot and humid exhaust gas; another solution is to add a bypass pipe and a valve to introduce fresh cathode reaction gas into the hot cathode reaction gas that is too humid after humidification, so that the humidity of the cathode reaction gas entering the stack after mixing is reduced to an appropriate range, that is, by increasing the amount of cathode reaction gas passing through to adjust the humidity of the cathode reaction gas entering the stack. This method of adjusting the cathode reaction gas not only increases the cost of the pipe and valve, but also increases the risk of leakage. The above solutions all achieve the purpose of adjusting the humidity of the cathode reaction gas by adjusting the amount, and there are disadvantages such as a large structure of the amount adjustment device, complex pipelines, high control difficulty, and large pressure fluctuations.

[0044] For example, in a fuel cell humidity control system, an air supply device, a membrane humidifier 2000, a humidity sensor, a fuel cell 3600, a first exhaust manifold, a first regulating valve 1000 and a second regulating valve 1000 are included. The air outlet of the air supply device is connected to the air inlet of the fuel cell 3600 through the dry area of ​​the membrane humidifier 2000 and the humidity sensor; the air outlet of the fuel cell 3600 is connected to the first regulating valve 1000 through the first exhaust manifold and the wet area of ​​the membrane humidifier 2000, and is connected to the second regulating valve 1000 through the first exhaust manifold; the humidity control system of the fuel cell 3600 is used to adjust the opening of the first regulating valve 1000 and the second regulating valve 1000 according to the monitoring result of the humidity sensor, so as to control the humidity of the air sent to the fuel cell 3600 to be maintained within a limited range. This solution has the disadvantages of complex piping. A three-way joint needs to be added to the exhaust port of the fuel cell stack, which increases the number of corresponding pipelines, increases the number of air leakage points, and is bulky. Simultaneous control of two regulating valves 1000 increases the complexity of FCU (Fuel-cell Control Unit, fuel cell system controller 3900) control, and the opening or closing of the second regulating valve 1000 will cause pressure fluctuations at the cathode outlet, which is not conducive to the life of the fuel cell stack.

[0045] In view of the above problems existing in the humidifier 2000, the embodiment of the present application provides a regulating valve 1000, such as Figures 1 to 12 As shown, the regulating valve 1000 includes a valve seat 100 and a valve core 200. The valve seat 100 is provided with a core cavity 110 and a first flow channel 120, a second flow channel 130 and a third flow channel 140 respectively connected to the core cavity 110, and the valve seat 100 is provided with a first valve seat port 121 connected to the first flow channel 120, a second valve seat port 131 connected to the second flow channel 130 and a third valve seat port 141 connected to the third flow channel 140, and the first valve seat port 121 and the second valve seat port 131 are located on the same side of the valve seat 100; the valve core 200 is rotatably arranged in the core cavity 110, and the valve core 200 is provided with a first valve port 211 and a second valve port 223 connected to each other, and the valve core 200 rotates relative to the valve seat 100 so that the first valve port 211 is connected to the first flow channel 120 or the second flow channel 130, and the second valve port 223 is used to connect to the third flow channel 140.

[0046] In the regulating valve 1000 of the present application, at least a first valve seat opening 121 and a second valve seat opening 131 are provided at the same time. By rotating the valve core 200 relative to the valve seat 100, the first valve seat opening 121 is connected to the first flow channel 120 or the second valve seat opening 131 is connected to the second flow channel 130, thereby forming two adjustable flow channels in the valve seat 100. Figures 14 to 16As shown, after the regulating valve 1000 is set in the humidifier 2000, the first valve seat port 121 and the second valve seat port 131 are connected to the humidifier 2000 at different positions, so the cathode reaction gas passes through the humidifier 2000 and enters the regulating valve 1000. The length of the flow path of the cathode reaction gas is different, and the transmission efficiency of the cathode reaction gas and the wet and hot tail gas is adjusted by adjusting the flow path length of the cathode reaction gas, thereby achieving the adjustment of the humidity of the cathode reaction gas. In other words, by setting the regulating valve 1000 in the humidifier 2000, the humidity of the cathode reaction gas can be self-regulated, which can reduce the control difficulty and pressure fluctuation of the humidifier 2000, and can also avoid setting a relatively large bypass pipeline and valve to reduce the leakage point and cost of the humidifier 2000.

[0047] In the regulating valve 1000 of the embodiment of the present application, the valve core 200 is sealed with the valve seat 100 through the structural design of the valve seat 100 and the valve core 200. By controlling the rotation angle of the valve core 200 relative to the valve seat 100, the on-off of different flow channels of the regulating valve 1000 can be controlled to adjust the position of the cathode reaction gas inlet 2120 and / or the position of the cathode reaction gas outlet 2160 in the humidifier 2000, so that the distance between the cathode reaction gas inlet 2120 and the cathode reaction gas outlet 2160 in the debugger is different, so that the effective exchange length of the cathode reaction gas in the humidifier 2000 is different, so as to achieve the purpose of adjusting the water exchange efficiency on both sides of the membrane tube 2200, and finally realize the self-regulating function of the cathode reaction gas humidity of the humidifier 2000.

[0048] In some embodiments, the valve core 200 is rotatably disposed in the core cavity 110. By rotating the valve core 200 relative to the valve seat 100, the first valve port 211 of the valve core 200 can be connected to the first flow channel 120, and the second valve port 223 of the valve core 200 can be connected to the third flow channel 140. At this time, the flow path of the cathode reaction gas in the regulating valve 1000 is as follows: Figure 7 As shown, the cathode reaction gas flows through the first flow channel 120, the valve core 200 and the third flow channel 140 in sequence.

[0049] In some embodiments, the valve core 200 is rotatably disposed in the core cavity 110. By rotating the valve core 200 relative to the valve seat 100, the first valve port 211 of the valve core 200 can be connected to the second flow channel 130, and the second valve port 223 of the valve core 200 can be connected to the third flow channel 140. At this time, the flow path of the cathode reaction gas in the regulating valve 1000 is as follows: Fig.11 As shown, the cathode reaction gas flows through the second flow channel 130 , the valve core 200 and the third flow channel 140 in sequence.

[0050] In some embodiments, the regulating valve 1000 can be connected to the cathode reaction gas inlet 2120 of the humidifier 2000, so that the humidifier 2000 has at least two cathode reaction gas inlets 2120 at different positions, so that the distances between the cathode reaction gas inlets 2120 at different positions in the humidifier 2000 and the cathode reaction gas outlet 2160 are different, and the cathode reaction gas enters the humidifier 2000 through the cathode reaction gas inlets 2120 at different positions. The effective exchange length of the cathode reaction gas in the length direction of the membrane tube 2200 in the humidifier 2000 is different, so the water exchange efficiency with the two sides of the membrane tube 2200 is different, and the final humidity of the cathode reaction gas is different. That is, the purpose of adjusting the humidity of the cathode reaction gas can be achieved by controlling the position of the cathode reaction gas inlet 2120 where the cathode reaction gas enters the humidifier 2000, that is, by controlling the position of the valve core 200 in the regulating valve 1000.

[0051] In some embodiments, Figures 14 to 16 As shown, the regulating valve 1000 can be connected to the cathode reaction gas outlet 2160 of the humidifier 2000, so that the humidifier 2000 has at least two cathode reaction gas outlets 2160 at different positions, so that the distances between the cathode reaction gas outlets 2160 at different positions in the humidifier 2000 and the cathode reaction gas inlet 2120 are different, and the cathode reaction gas flows out of the humidifier 2000 through the cathode reaction gas outlets 2160 at different positions. The effective exchange length of the cathode reaction gas in the length direction of the membrane tube 2200 in the humidifier 2000 is different, so the water exchange efficiency with the two sides of the membrane tube 2200 is different, and the final humidity of the cathode reaction gas is different. That is, the purpose of adjusting the humidity of the cathode reaction gas can be achieved by controlling the position of the cathode reaction gas outlet 2160 where the cathode reaction gas flows out of the humidifier 2000, that is, by controlling the position of the valve core 200 in the regulating valve 1000.

[0052] In some embodiments, humidifier 2000 may be provided with two regulating valves 1000, wherein one regulating valve 1000 is in communication with cathode reaction gas inlet 2120 of humidifier 2000, and the other regulating valve 1000 is in communication with cathode reaction gas outlet 2160 of humidifier 2000, so that humidifier 2000 has at least two cathode reaction gas inlets 2120 at different positions and at least two cathode reaction gas outlets 2160 at different positions, thereby making the distances between cathode reaction gas inlets 2120 at different positions in humidifier 2000 and cathode reaction gas inlets 2120 at different positions different, cathode reaction gas enters humidifier 2000 through cathode reaction gas inlets 2120 at different positions and flows out of humidifier 2000 from cathode reaction gas outlets 2160 at different positions, and the effective exchange length of cathode reaction gas in the length direction of membrane tube 2200 in humidifier 2000 is different, thereby making the water exchange efficiency with both sides of membrane tube 2200 different, and the final humidity of cathode reaction gas is different. That is, the purpose of adjusting the humidity of the cathode reaction gas can be achieved by controlling the position of the cathode reaction gas inlet 2120 where the cathode reaction gas enters the humidifier 2000 and the position of the cathode reaction gas outlet 2160 where the cathode reaction gas flows out of the humidifier 2000, that is, by controlling the position of the valve core 200 in the two regulating valves 1000.

[0053] In the above embodiment, the rotation angle of the valve core 200 in the regulating valve 1000 can be controlled according to the humidity of the cathode reaction gas detected by the humidity sensor in the fuel cell system, so as to change the position of the cathode reaction gas inlet 2120 and / or the cathode reaction gas outlet 2160, so as to change the effective exchange length of the cathode reaction gas in the length direction of the membrane tube 2200 in the humidifier 2000, thereby increasing or decreasing the humidity of the cathode reaction gas entering the fuel cell 3600.

[0054] In the above embodiment, the humidifier 2000 has a humidity self-regulating function by controlling the regulating valve 1000, the humidity regulation control is simple, and no pressure fluctuation is generated in the cathode reaction gas path, which is beneficial to improving the life and voltage stability of the fuel cell 3600; at the same time, the humidifier 2000 is compact in size, without redundant pipes and joints, and will not increase the leakage points in the cathode reaction gas path in the fuel cell system, thereby improving the operating stability of the fuel cell system.

[0055] As an optional implementation, Figures 1 to 12As shown, the valve seat 100 is provided with a fourth valve seat port 111 connected to the core cavity 110, and the fourth valve seat port 111, the first valve seat port 121 and the second valve seat port 131 are located on the same side of the valve seat 100; the valve core 200 is provided with a fourth valve port 212 connected to the second valve port 223, and the valve core 200 can rotate relative to the valve seat 100 so that the fourth valve port 212 can be connected to the fourth valve seat port 111 accordingly.

[0056] In some embodiments, Figure 1 and Figure 4 As shown, a fourth valve seat port 111 connected to the core cavity 110 is opened on the valve seat 100, and the fourth valve seat port 111, the first valve seat port 121 and the second valve seat port 131 are located on the same side of the valve seat 100. When the regulating valve 1000 is set in the humidifier 2000, the fourth valve seat port 111, the first valve seat port 121 and the second valve seat port 131 can be respectively connected to the humidification cavity 2110 of the humidifier 2000. At the same time, the valve core 200 is provided with a fourth valve port 212 connected to the second valve port 223. By rotating the valve core 200 relative to the valve seat 100, the fourth valve port 212 can be connected to the fourth valve seat port 111 accordingly. At this time, the cathode reaction gas can enter the interior of the valve core 200 through the fourth valve seat port 111 and the third valve seat port 141, and can enter the third flow channel 140 through the second valve port 223, and finally be discharged through the third valve seat port 141 connected to the third flow channel 140. In these embodiments, by opening a fourth valve seat opening 111 in the valve seat 100 and a fourth valve opening 212 in the valve core 200, the regulating valve 1000 can add a position for cathode reaction gas to enter the regulating valve 1000. Accordingly, when the regulating valve 1000 is set in the humidifier 2000, the humidifier 2000 can add a cathode reaction gas inlet 2120 position and / or a cathode reaction gas outlet 2160 position, so that the humidifier 2000 has more cathode reaction gas flow paths with different effective exchange lengths, thereby making the humidifier 2000 have a humidity regulation function with more types, more flexible and more precise regulation.

[0057] In some embodiments, Figures 1 to 3 As shown, the valve seat 100 includes a valve seat bottom wall 151, a valve seat side wall 152, a valve seat top wall 153 and a valve seat partition 154. The valve seat 100 forms an internal cavity through the valve seat bottom wall 151, the valve seat side wall 152 and the valve seat top wall 153. The partition is arranged in the internal cavity to separate the internal cavity into a core cavity 110, a first flow channel 120, a second flow channel 130 and a third flow channel 140. Figure 3As shown, the valve seat 100 can be divided into two parts, the upper and lower parts, by the partition. The first flow channel 120 and the second flow channel 130 are located at the lower part of the valve seat 100, and the third flow channel 140 is located at the upper part of the valve seat 100. The third flow channel 140 is separated from the first flow channel 120 and the second flow channel 130 by the partition. The lower part of the core cavity 110 is located between the first flow channel 120 and the second flow channel 130, and is connected to the first flow channel 120 and the second flow channel 130; the upper part of the core cavity 110 is located at the end of the first flow channel 120, and is connected to the third flow channel 140. In other words, as Figure 3 As shown, in the horizontal direction, the first flow channel 120, the lower part of the core cavity 110 and the second flow channel 130 are connected in sequence, and the upper part of the core cavity 110 is connected to the third flow channel 140; in the vertical direction, the lower part of the core cavity 110 is connected to the upper part of the core cavity 110, so that the valve core 200 can be set in the core cavity 110.

[0058] In some embodiments, Figures 1 to 3 As shown, a fourth valve seat opening 111 can be opened at a position corresponding to the bottom wall of the valve seat 100 and the core cavity 110, and correspondingly, a fourth valve opening 212 is opened on the valve core 200, and the fourth valve opening 212 can be made to correspond to the fourth valve seat opening 111 by rotating the valve core 200 relative to the valve seat 100, so that the fourth valve seat opening 111 and the fourth valve opening 212 can be connected, and since the fourth valve opening 212 is connected to the second valve opening 223, the cathode reaction gas can enter the fourth valve opening 212 of the valve core 200 through the fourth valve seat opening 111 of the valve seat 100, and then enter the third flow channel 140 of the valve seat 100 through the second valve opening 223 of the valve core 200, and then can flow out from the third flow channel 140 through the third valve seat opening 141.

[0059] In some embodiments, Figure 3 As shown, the first flow channel 120, the second flow channel 130 and the third flow channel 140 may be cylindrical flow channels. Figure 1 and Figure 2 As shown, the first valve seat opening 121 , the second valve seat opening 131 and the third valve seat opening 141 may be circular openings, and the fourth valve seat opening 111 may be a symmetrically arranged fan-shaped opening.

[0060] In other embodiments, the first flow channel 120, the second flow channel 130 and the third flow channel 140 are rectangular flow channels or flow channel structures of other shapes. The first valve seat opening 121, the second valve seat opening 131, the third valve seat opening 141 and the fourth valve seat opening 111 can be openings of various shapes such as rectangular openings, fan-shaped openings, trapezoidal openings, triangular openings, etc., which can achieve the first flow channel 120, the second flow channel 130, the third flow channel 140 and the core cavity 110 to be connected to the outside of the valve seat 100, and will not be repeated here.

[0061] As an optional implementation, Figures 4 to 6 As shown, the valve core 200 includes a bottom core 210 in a hollow cylindrical structure and a top core 220 in a hollow cylindrical structure; wherein the side wall 214 of the bottom core is provided with a first valve port 211, the bottom surface 213 of the bottom core is provided with a fourth valve port 212, and the side wall 222 of the top core is provided with a second valve port 223.

[0062] In some embodiments, Figures 4 to 6 As shown, the valve core 200 may be a cylindrical structure as a whole, and its interior is a hollow structure. Figure 5 As shown, the valve core 200 can be divided into two parts, that is, the valve core 200 is divided into a bottom core body 210 and a top core body 220. The hollow structure in the bottom core body 210 forms a bottom flow channel 215, and the hollow structure in the top core body 220 forms a top flow channel. The bottom flow channel 215 in the bottom core body 210 and the top flow channel of the top core body 220 can be directly connected or connected through a filter or other structure. When the valve core 200 is set in the core cavity 110 of the valve seat 100, the bottom core body 210 is located at the lower part of the core cavity 110, and the top core body 220 is located at the upper part of the core cavity 110.

[0063] like Figure 4 and Figure 5 As shown, the side wall 214 of the bottom core body is provided with a first valve port 211. By rotating the valve core 200 relative to the valve seat 100, the first valve port 211 can be directed toward the first flow channel 120, so that the first valve port 211 is connected to the first flow channel 120. At the same time, the side wall 214 of the bottom core body blocks the second flow channel 130, so that the valve core 200 is disconnected from the second flow channel 130. The flow path of the cathode reaction gas in the regulating valve 1000 is the first flow channel 120, the valve core 200, and the second flow channel 130. and the third flow channel 140; by rotating the valve core 200 180° relative to the valve seat 100, the first valve port 211 can be directed toward the second flow channel 130, so that the first valve port 211 is connected to the second flow channel 130, and at the same time, the side wall 214 of the bottom core blocks the first flow channel 120, so that the valve core 200 is disconnected from the first flow channel 120, and the flow path of the cathode reaction gas in the regulating valve 1000 is the second flow channel 130, the valve core 200 and the third flow channel 140.

[0064] like Figure 4 and Figure 6As shown, a fourth valve port 212 is provided on the bottom surface 213 of the bottom core body, and by rotating the valve core 200 relative to the valve seat 100, the first valve port 211 avoids the direction of the first flow channel 120 and the wind direction of the second flow channel 130, and at the same time, the fourth valve port 212 corresponds to the fourth valve seat port 111, even if the side wall 214 of the bottom core body blocks the first flow channel 120 and the second flow channel 130, the valve core 200 is disconnected from the first flow channel 120 and the second flow channel 130, the valve core 200 is connected to the outside of the valve seat 100 through the fourth valve port 212 and the fourth valve seat port 111, and the flow path of the cathode reaction gas in the regulating valve 1000 is the valve core 200 and the third flow channel 140.

[0065] like Figure 4 and Figure 5 As shown, a second valve port 223 is provided on the side wall 222 of the top core body. In order to ensure that the second valve port 223 of the valve core 200 and the third flow channel 140 of the valve seat 100 are always connected regardless of the position to which the valve core 200 is rotated, a plurality of second valve ports 223 are provided on the side wall 222 of the top core body. The plurality of second valve ports 223 are evenly distributed on the side wall 222 of the top core body, so that the remaining portion of the side wall 222 of the top core body forms a grid structure, so that the side wall 222 of the top core body has the second valve port 223 connected to the third flow channel 140 regardless of the state to which the valve core 200 is rotated.

[0066] In some embodiments, Figure 3 and Figure 4 As shown, the core cavity 110 is a cylindrical structure, and the diameter of the upper part of the core cavity 110 is the same as that of the lower part of the core cavity 110. Correspondingly, the valve core 200 is a cylindrical structure. When the valve core 200 is set in the core cavity 110, the valve core 200 can match the structure of the valve core 200, so that the valve core 200 and the core cavity 110 form a clearance-fit connection, so that the valve core 200 can rotate in the core cavity 110 and avoid leakage of the cathode reaction gas through the gap between the valve core 200 and the core cavity 110.

[0067] In some other embodiments, the upper part of the core cavity 110 and the lower part of the core cavity 110 can be cylindrical structures with different diameters respectively. Correspondingly, the top core body 220 and the bottom core body 210 in the valve core 200 are also cylindrical structures with different diameters. When the valve core 200 is set in the core cavity 110, the top core body 220 matches the upper structure of the core cavity 110, and the bottom core body 210 matches the lower structure of the core cavity 110.

[0068] In the regulating valve 1000 of the present application, the structures of the core cavity 110 and the valve core 200 can be adaptively adjusted according to design requirements, which will not be elaborated here.

[0069] As an optional implementation, Figure 4 and Figure 5 As shown, the distribution range of the first valve openings 211 on the side wall 214 of the bottom core is less than or equal to 90°.

[0070] In some embodiments, Figure 4 and Figure 5 As shown, the distribution range of the first valve port 211 on the side wall 214 of the bottom core body is less than or equal to 90°, which can ensure that when the valve core 200 rotates to the state where the first valve port 211 is connected to the fourth valve seat port 111, the first valve port 211 corresponds to the valve seat side wall 152, and the first valve port 211 can be blocked by the valve seat side wall 152 to prevent the first valve port 211 from being connected to the first flow channel 120 or the second flow channel 130.

[0071] In some embodiments, Figure 4 As shown, the first valve port 211 opened on the side wall 214 of the bottom core is circular. Optionally, the first valve port 211 is circular, the first flow channel 120 and the second flow channel 130 are circular flow channels, and the diameter of the first valve port 211 is the same as the diameter of the first flow channel 120 and the diameter of the second flow channel 130.

[0072] In some other embodiments, the first valve opening 211 opened on the side wall 214 of the bottom core may be rectangular. In addition, the first valve opening 211 may also be other shapes, such as a triangle.

[0073] As an optional implementation, Figure 1 as well as Figures 4 to 6 As shown, the fourth valve seat port 111 is an arcuate opening or a fan-shaped opening of less than or equal to 90°, and the fourth valve port 212 is an arcuate opening or a fan-shaped opening of less than or equal to 90°; or, the fourth valve seat port 111 is two arcuate openings or fan-shaped openings that are oppositely arranged and less than or equal to 90°, and the fourth valve port 212 is two arcuate openings or fan-shaped openings that are oppositely arranged and less than or equal to 90°; and when the first valve port 211 is not connected with the first flow channel 120 or the second flow channel 130, the fourth valve port 212 is connected with the fourth valve seat port 111.

[0074] In some embodiments, the fourth valve seat port 111 and the fourth valve port 212 are both arc-shaped openings or fan-shaped openings with an angle of less than or equal to 90°, or the fourth valve seat port 111 and the fourth valve port 212 are both two arc-shaped openings or fan-shaped openings that are relatively arranged and less than or equal to 90°, so that the structures of the fourth valve seat port 111 and the fourth valve port 212 can be matched, and during the rotation of the valve core 200 relative to the valve seat 100, the fourth valve port 212 can be rotated to a position corresponding to the fourth valve seat port 111, so that the fourth valve port 212 can overlap with the fourth valve seat port 111, so that the bottom flow channel 215 of the valve core 200 is connected to the outside of the regulating valve 1000.

[0075] In some embodiments, a first valve port 211 is formed on the side wall 214 of the bottom core body, and a fan-shaped opening is formed on the bottom surface 213 of the bottom core body at a position corresponding to the first valve port 211 as a fourth valve port 212. Accordingly, a fan-shaped opening is formed on the valve seat bottom wall 151 at a position corresponding to the core cavity 110 and in a direction perpendicular to the first flow channel 120 / the second flow channel 130 as a fourth valve seat port 111. When the valve core 200 is rotated to connect the first valve port 211 with the first flow channel 120, the fourth valve port 212 is staggered with the fourth valve seat port 111, the fourth valve port 212 is blocked by the valve seat bottom wall 151, and the second flow channel 130 is blocked by the side wall 214 of the bottom core body; the valve core 200 is rotated 90°, so that the fourth valve port 212 is connected with the fourth valve seat port 111 correspondingly. At this time, the first valve port 211 is staggered with the first flow channel 120, the first flow channel 120 is blocked by the side wall 214 of the bottom core body, the first valve port 211 is staggered with the second flow channel 130, and the second flow channel 130 is blocked by the side wall 214 of the bottom core body; the valve core 200 is further rotated 90° in the original rotation direction, so that the first valve port 2 11 is connected to the second flow channel 130. At this time, the fourth valve port 212 is staggered with the fourth valve seat port 111, the fourth valve port 212 is blocked by the valve seat bottom wall 151, and the first flow channel 120 is blocked by the side wall 214 of the bottom core body; the valve core 200 is further rotated 90° in the original rotation direction, so that the first valve port 211 is staggered with the first flow channel 120, the first flow channel 120 is blocked by the side wall 214 of the bottom core body, the first valve port 211 is staggered with the second flow channel 130, the second flow channel 130 is blocked by the side wall 214 of the bottom core body, the fourth valve port 212 is staggered with the fourth valve seat port 111, and the fourth valve port 212 is blocked by the valve seat bottom wall 151. In other words, the regulating valve 1000 is in a closed state.

[0076] In some other embodiments, a first valve port 211 is formed on the side wall 214 of the bottom core body, and a fan-shaped opening is formed on the bottom surface 213 of the bottom core body at a position staggered from the first valve port 211 as a fourth valve port 212. Accordingly, a fan-shaped opening is formed on the valve seat bottom wall 151 at a position corresponding to the core cavity 110 and in a direction corresponding to the first flow channel 120 / the second flow channel 130 as a fourth valve seat port 111. When the valve core 200 is rotated to connect the first valve port 211 with the first flow channel 120, the fourth valve port 212 is staggered with the fourth valve seat port 111, the fourth valve port 212 is blocked by the valve seat bottom wall 151, and the second flow channel 130 is blocked by the side wall 214 of the bottom core body; the valve core 200 is rotated 90°, so that the fourth valve port 212 is connected with the fourth valve seat port 111 correspondingly. At this time, the first valve port 211 is staggered with the first flow channel 120, the first flow channel 120 is blocked by the side wall 214 of the bottom core body, the first valve port 211 is staggered with the second flow channel 130, and the second flow channel 130 is blocked by the side wall 214 of the bottom core body; the valve core 200 is further rotated 90° in the original rotation direction, so that the first valve port 2 11 is connected to the second flow channel 130. At this time, the fourth valve port 212 is staggered with the fourth valve seat port 111, the fourth valve port 212 is blocked by the valve seat bottom wall 151, and the first flow channel 120 is blocked by the side wall 214 of the bottom core body; the valve core 200 is further rotated 90° in the original rotation direction, so that the first valve port 211 is staggered with the first flow channel 120, the first flow channel 120 is blocked by the side wall 214 of the bottom core body, the first valve port 211 is staggered with the second flow channel 130, the second flow channel 130 is blocked by the side wall 214 of the bottom core body, the fourth valve port 212 is staggered with the fourth valve seat port 111, and the fourth valve port 212 is blocked by the valve seat bottom wall 151. In other words, the regulating valve 1000 is in a closed state.

[0077] In some embodiments, Figure 1 as well as Figures 4 to 6 As shown, the side wall 214 of the bottom core body is provided with a first valve port 211, and the bottom surface 213 of the bottom core body is provided with two oppositely arranged fan-shaped openings at a position corresponding to the first valve port 211 as a fourth valve port 212. Accordingly, two oppositely arranged fan-shaped openings are provided at a position corresponding to the core cavity 110 of the valve seat bottom wall 151 and in a direction perpendicular to the first flow channel 120 / the second flow channel 130 as a fourth valve seat port 111. Figure 7 and Figure 8As shown, when the valve core 200 is rotated to connect the first valve port 211 with the first flow channel 120, the fourth valve port 212 is staggered with the fourth valve seat port 111, the fourth valve port 212 is blocked by the valve seat bottom wall 151, and the second flow channel 130 is blocked by the side wall 214 of the bottom core body. The cathode reaction gas enters the first flow channel 120 from the first valve seat port 121, then enters the valve core 200 and the third flow channel 140, and finally exits the regulating valve 1000 through the third valve seat port 141; the valve core 200 is rotated 90°, as shown in FIG. Fig. 9 and Fig.10 As shown, the two fan-shaped openings as the fourth valve port 212 can be connected to the two fan-shaped openings as the fourth valve seat port 111. At this time, the first valve port 211 is staggered with the first flow channel 120, and the first flow channel 120 is blocked by the side wall 214 of the bottom core body. The first valve port 211 is staggered with the second flow channel 130, and the second flow channel 130 is blocked by the side wall 214 of the bottom core body. The cathode reaction gas enters the valve core 200 and the third flow channel 140 from the fourth valve seat port 111, and finally exits the regulating valve 1000 through the third valve seat port 141; the valve core 200 is rotated 90° in the original rotation direction, as shown in FIG. Fig.11 and Fig.12 As shown, the first valve port 211 can be connected to the second flow channel 130. At this time, the fourth valve port 212 is staggered with the fourth valve seat port 111, the fourth valve port 212 is blocked by the valve seat bottom wall 151, and the first flow channel 120 is blocked by the side wall 214 of the bottom core body. The cathode reaction gas enters the second flow channel 130 from the second valve seat port 131, then enters the valve core 200 and the third flow channel 140, and finally exits the regulating valve 1000 through the third valve seat port 141.

[0078] In some embodiments, a first valve port 211 is formed on the side wall 214 of the bottom core body, and two relatively fan-shaped openings are formed on the bottom surface 213 of the bottom core body at a position staggered from the first valve port 211 as a fourth valve port 212. Accordingly, two relatively fan-shaped openings are formed on the bottom wall 151 of the valve seat at a position corresponding to the core cavity 110 and in a direction corresponding to the first flow channel 120 / the second flow channel 130 as a fourth valve seat port 111. When the valve core 200 is rotated to connect the first valve port 211 with the first flow channel 120, the fourth valve port 212 is staggered with the fourth valve seat port 111, the fourth valve port 212 is blocked by the valve seat bottom wall 151, and the second flow channel 130 is blocked by the side wall 214 of the bottom core body; the valve core 200 is rotated 90°, so that the two fan-shaped openings serving as the fourth valve port 212 can be connected with the two fan-shaped openings serving as the fourth valve seat port 111 correspondingly. At this time, the first valve port 211 is staggered with the first flow channel 120, and the fourth valve port 212 is blocked by the valve seat bottom wall 151, and the second flow channel 130 is blocked by the side wall 214 of the bottom core body. The first flow channel 120 is blocked by the side wall 214 of the bottom core body, the first valve port 211 is staggered with the second flow channel 130, and the second flow channel 130 is blocked by the side wall 214 of the bottom core body; the valve core 200 is further rotated 90° in the original rotation direction to connect the first valve port 211 with the second flow channel 130. At this time, the fourth valve port 212 is staggered with the fourth valve seat port 111, the fourth valve port 212 is blocked by the valve seat bottom wall 151, and the first flow channel 120 is blocked by the side wall 214 of the bottom core body.

[0079] In the above-mentioned embodiment of the present application, every time the valve core 200 rotates 90°, the three communication states in which the valve core 200 is directly connected with the first flow channel 120, the second flow channel 130 and the outside of the regulating valve 1000 can be completely switched.

[0080] In the present application, the valve core 200 can also rotate relative to the valve seat 100 at a smaller rotation angle, so that the humidity adjustment accuracy of the regulating valve 1000 is higher. For example, in the initial state where the first valve port 211 of the valve core 200 is connected with the first flow channel 120, the fourth valve port 212 is staggered with the fourth valve seat port 111, the fourth valve port 212 is blocked by the valve seat bottom wall 151, and the second flow channel 130 is blocked by the side wall 214 of the bottom core body, the valve core 200 is rotated 45° relative to the valve seat 100. At this time, the first valve port 211 is in a semi-connected state with the first flow channel 120, the fourth valve port 212 is in a semi-connected state with the fourth valve seat port 111, and the second flow channel 130 is in a blocked state. The cathode reaction gas can partially enter the regulating valve 1000 through the first valve seat port 121 and partially enter the regulating valve 1000 through the fourth valve seat port 111.

[0081] In some embodiments, the fourth valve seat opening 111 is an arcuate opening or a fan-shaped opening with an angle less than or equal to 90°, and the fourth valve opening 212 is an arcuate opening or a fan-shaped opening with an angle less than or equal to 90°; or, the fourth valve seat opening 111 is two arcuate openings or fan-shaped openings that are oppositely arranged and are less than or equal to 90°, and the fourth valve opening 212 is two arcuate openings or fan-shaped openings that are oppositely arranged and are less than or equal to 90°; when the valve core 200 is rotated until the first valve opening 211 is completely correspondingly connected with the first flow channel 120 or the second flow channel 130, the fourth valve port 212 and the fourth valve seat port 111 are staggered with each other, that is, the cathode reaction gas cannot enter the valve core 200 through the fourth valve seat port 111 and the fourth valve port 212.

[0082] Optionally, the fourth valve seat opening 111 is an arcuate opening or a fan-shaped opening of less than 90°, and the fourth valve opening 212 is an arcuate opening or a fan-shaped opening of less than 90°; or, the fourth valve seat opening 111 is two arcuate openings or fan-shaped openings that are oppositely arranged and less than 90°, and the fourth valve opening 212 is two arcuate openings or fan-shaped openings that are oppositely arranged and less than 90°; when the valve core 200 rotates to the point where the first valve port 211 is completely correspondingly connected with the first flow channel 120 or the second flow channel 130, the fourth valve port 212 and the fourth valve seat port 111 are completely staggered and not connected with each other.

[0083] Optionally, the curvature of the arc-shaped opening or fan-shaped opening serving as the fourth valve port 212 can be made smaller than or equal to the curvature of the arc-shaped opening or fan-shaped opening serving as the fourth valve seat port 111, so as to further ensure that when the valve core 200 rotates to the point where the first valve port 211 is completely connected to the first flow channel 120 or the second flow channel 130, the fourth valve port 212 and the fourth valve seat port 111 are completely offset from each other and are not connected.

[0084] In some embodiments, Fig.10 As shown, the diameter of the arc-shaped opening or the fan-shaped opening serving as the fourth valve port 212 may be made smaller than or equal to the diameter of the arc-shaped opening or the fan-shaped opening serving as the fourth valve seat port 111 .

[0085] It should be noted that the center of the arc-shaped opening or fan-shaped opening serving as the fourth valve port 212 coincides with the center of the arc-shaped opening or fan-shaped opening serving as the fourth valve seat port 111, to ensure that during the rotation of the valve core 200 relative to the valve seat 100, the fourth valve port 212 can completely coincide with the fourth valve seat port 111, thereby achieving the maximum opening state of the fourth valve port 212; the fourth valve port 212 can also be completely offset from the fourth valve seat port 111, thereby achieving the closed state of the fourth valve port 212.

[0086] As an optional implementation, the valve core 200 further includes a transmission shaft 230 disposed on the top core body 220 , and the transmission shaft 230 passes through the core cavity 110 and is located outside the valve seat 100 .

[0087] In some embodiments, Figure 7 As shown, a transmission shaft 230 can be arranged on the top surface 221 of the top core body, and accordingly, a through hole can be opened on the valve seat top wall 153, so that the through hole passes through the core cavity 110 and the outside of the valve seat 100, so that the transmission shaft 230 can pass through the through hole and be located outside the valve seat 100. A driving device can be provided on the valve seat top wall 153, and the transmission shaft 230 is driven to rotate by the driving device, thereby achieving the purpose of driving the valve core 200 to rotate, so that the regulating valve 1000 can be automatically controlled.

[0088] In some embodiments, the driving device may be a motor 300, which drives the valve core 200 to rotate relative to the valve seat 100, so that the rotation range of the valve core 200 is at least 0° to 180°. Optionally, the rotation range of the valve core 200 may also be 0° to 270° or 0° to 360°.

[0089] Optionally, within the above rotation range, the valve core 200 can stop at any rotation position in the core cavity 110 according to the humidity adjustment target of the cathode reaction gas.

[0090] It should be noted that in order to enable the valve core 200 to rotate stably, the rotation axis of the transmission shaft 230 needs to coincide with the rotation axis of the valve core 200 , that is, the transmission shaft 230 needs to be arranged at the center of the top surface 221 of the top core body.

[0091] In the above embodiment, optionally, Figure 7 , Fig. 9 as well as Fig.11 As shown, the vertical length of the third flow channel 140 can be made equal to the vertical length of the top core 220, that is, the vertical length of the third flow channel 140 is equal to the sum of the top thickness of the top core 220 and the length of the grille.

[0092] In the above embodiment, optionally, Figure 3 As shown, the diameter of the through-opening between the core cavity 110 and the third flow channel 140 is not less than the length of the grid, so as to ensure that the cathode reaction gas passing through the grid on the top core body 220 is not blocked.

[0093] In the above embodiment, optionally, Figure 7 , Fig. 9 as well as Fig.11 As shown, the sum of the height of the valve core 200 in the vertical direction and the thickness of the bottom wall of the valve core 200 is the same as the overall height of the valve seat 100 in the vertical direction, so that after the valve core 200 is set in the core cavity 110, the upper and lower ends of the valve core 200 are flush with the outside of the valve seat 100.

[0094] In the above embodiments of the present application, in order to enable each valve seat 100 port on the valve seat 100 to be connected to the humidifier 2000, the valve seat 100 port may be protruded relative to the outer surface of the valve housing to form an interface portion, or an interface portion for connection may be provided inside each valve seat 100 port. In addition, a sealing structure such as a sealing ring may be provided at a corresponding position to ensure sealing performance after connection.

[0095] Based on the same inventive concept, the present application embodiment also provides a humidifier 2000, such as Figures 1 to 16 As shown, the humidifier 2000 includes:

[0096] A housing 2100, wherein a humidification chamber 2110 is provided in the housing 2100, and a cathode reaction gas inlet 2120 and a cathode reaction gas outlet 2160 are provided on the housing 2100 and communicated with the humidification chamber 2110,

[0097] A membrane tube 2200, wherein the membrane tube 2200 is disposed in the humidification chamber 2110, and the housing 2100 is provided with a humid hot exhaust gas inlet 2210 and a humid hot exhaust gas outlet 2220 communicated with the membrane tube 2200; and,

[0098] The above-mentioned regulating valve 1000 is arranged on the shell 2100, and the first valve seat port 121 and the second valve seat port 131 of the regulating valve 1000 are connected with the humidification chamber 2110 through the cathode reaction gas inlet 2120, or, the first valve seat port 121 and the second valve seat port 131 of the regulating valve 1000 are connected with the humidification chamber 2110 through the cathode reaction gas outlet 2160.

[0099] Since the humidifier 2000 provided by the present invention includes the regulating valve 1000 of the above technical solution, the humidifier 2000 provided by the present invention has all the beneficial effects of the above regulating valve 1000, which will not be elaborated here.

[0100] As an optional embodiment, the valve seat 100 is provided with a fourth valve seat port 111 connected to the core cavity 110 of the valve core 200, and the fourth valve seat port 111, the first valve seat port 121 and the second valve seat port 131 are located on the same side of the valve seat 100; the valve core 200 is provided with a fourth valve port 212 connected to the second valve port 223, and the valve core 200 rotates relative to the valve seat 100 to make the first valve port 211 connected to the first flow channel 120 or the second flow channel 130 correspondingly connected, or to make the fourth valve port 212 connected to the fourth valve seat port 111; the fourth valve seat port 111 is connected to the humidification chamber 2110.

[0101] In some embodiments, Figures 13 to 16As shown, the humidifier 2000 includes a housing 2100, and the space in the housing 2100 is divided into a wet and hot exhaust gas inlet flow channel 2140, a humidification chamber 2110, and a wet and hot exhaust gas outlet flow channel 2150 by a potting partition 2130 in the housing 2100. A plurality of relatively parallel membrane tubes 2200 are arranged in the humidification chamber 2110, so that the two ends of the membrane tubes 2200 pass through the potting partition 2130 and are respectively located in the wet and hot exhaust gas inlet flow channel 2140, the humidification chamber 2110, and the wet and hot exhaust gas outlet flow channel 2150. A wet hot exhaust gas inlet 2210 is opened in the portion of the shell 2100 corresponding to the wet hot exhaust gas inlet flow channel 2140, and a wet hot exhaust gas outlet 2220 is opened in the portion of the shell 2100 corresponding to the wet hot exhaust gas outlet flow channel 2150, so that the wet hot exhaust gas can flow through the humidifier 2000 along the path of the wet hot exhaust gas inlet 2210, the wet hot exhaust gas inlet flow channel 2140, the membrane tube 2200, the wet hot exhaust gas outlet flow channel 2150 and the wet hot exhaust gas outlet 2220. A cathode reaction gas inlet 2120 and a cathode reaction gas outlet 2160 are provided in the shell 2100 corresponding to the humidification chamber 2110. The cathode reaction gas can enter the humidification chamber 2110 through the cathode reaction gas inlet 2120, exchange heat with the hot and humid exhaust gas in the membrane tube 2200 in the humidification chamber 2110, and mix with the water released from the membrane tube 2200 to increase the humidity of the cathode reaction gas, and then be discharged from the humidification chamber 2110 through the cathode reaction gas outlet 2160.

[0102] In some embodiments, Figures 14 to 16 As shown, the cathode reaction gas inlet 2120 and the cathode reaction gas outlet 2160 may be provided with pipe joints protruding from the housing 2100, so as to be connected to the cathode reaction gas pipeline or to the respective valve seats 100 of the regulating valve 1000. The wet and hot exhaust gas inlet 2210 and the wet and hot exhaust gas outlet 2220 may be provided with pipe joints protruding from the housing 2100, so as to be connected to the wet and hot exhaust gas pipeline.

[0103] In some embodiments, Figures 14 to 16 As shown, the regulating valve 1000 can be connected to the cathode reaction gas outlet 2160 of the humidifier 2000. Accordingly, three cathode reaction gas outlets 2160 are provided on the housing 2100, so that the positions of the three cathode reaction gas outlets 2160 correspond to the positions of the first valve seat opening 121, the second valve seat opening 131 and the fourth valve seat opening 111 of the regulating valve 1000. Figures 14 to 16 As shown, the first cathode reaction gas outlet 2161 corresponds to the first valve seat port 121 and is interconnected, the second cathode reaction gas outlet 2162 corresponds to the second valve seat port 131 and is interconnected, and the fourth cathode reaction gas outlet 2163 corresponds to the fourth valve seat port 111 and is interconnected.

[0104] like Fig.14 As shown, when the regulating valve 1000 is in the state where the first valve port 211 is connected to the first flow channel 120, the humid hot exhaust gas enters the humid hot exhaust gas inlet flow channel 2140 through the humid hot exhaust gas inlet 2210, enters the interior of a series of membrane tubes 2200 to enter the humidification chamber 2110, exchanges heat and humidity with the cathode reaction gas, and water migrates to the outside of the membrane tube 2200 to mix with the cathode reaction gas; the cathode reaction gas enters the humidification chamber 2110 through the cathode reaction gas inlet 2120 and is located in the humidification chamber 2110. Outside the membrane tube 2200, heat and humidity are exchanged with the hot and humid exhaust gas in the humidification chamber 2110 to be heated and humidified, and then the cathode reaction gas can flow through the first cathode reaction gas outlet 2161, the first valve seat port 121, the first flow channel 120, the first valve port 211, the valve core 200, the second valve port 223, the third flow channel 140 and the third valve seat port 141 in sequence, and the cathode reaction gas discharged from the humidifier 2000 can be connected to the cathode of the fuel cell 3600. At this time, the effective exchange length inside and outside the membrane tube 2200 (left and right direction in the figure) is relatively small, and the exchange efficiency is relatively low.

[0105] like Fig.15 As shown, when the regulating valve 1000 is in the state where the fourth valve port 212 is correspondingly connected to the fourth valve seat port 111, the humid hot exhaust gas enters the humid hot exhaust gas inlet flow channel 2140 through the humid hot exhaust gas inlet 2210, enters a series of membrane tubes 2200 to enter the humidification chamber 2110, exchanges heat and humidity with the cathode reaction gas, and water migrates to the outside of the membrane tube 2200 to mix with the cathode reaction gas; the cathode reaction gas enters the humidification chamber 2110 through the cathode reaction gas inlet 2120 and is located outside the membrane tube 2200, exchanges heat and humidity with the humid hot exhaust gas in the humidification chamber 2110 to be heated and humidified, and then can flow through the fourth cathode reaction gas outlet 2163, the fourth valve seat port 111, the fourth valve port 212, the valve core 200, the second valve port 223, the third flow channel 140 and the third valve seat port 141 in sequence, and the cathode reaction gas discharged from the humidifier 2000 can be connected to the cathode of the fuel cell 3600. At this time, the effective exchange lengths inside and outside the membrane tube 2200 (left and right directions in the figure) are relatively centered, and the exchange efficiency is relatively centered.

[0106] like Fig.16As shown, when the regulating valve 1000 is in the state where the first valve port 211 is connected to the second flow channel 130, the humid hot exhaust gas enters the humid hot exhaust gas inlet flow channel 2140 through the humid hot exhaust gas inlet 2210, enters the interior of a series of membrane tubes 2200 to enter the humidification chamber 2110, exchanges heat and humidity with the cathode reaction gas, and water migrates to the outside of the membrane tube 2200 to mix with the cathode reaction gas; the cathode reaction gas enters the humidification chamber 2110 through the cathode reaction gas inlet 2120 and is located in the humidification chamber 2110. Outside the membrane tube 2200, heat and humidity are exchanged with the hot and humid exhaust gas in the humidification chamber 2110 to be heated and humidified, and then the cathode reaction gas can flow through the second cathode reaction gas outlet 2162, the second valve seat port 131, the second flow channel 130, the first valve port 211, the valve core 200, the second valve port 223, the third flow channel 140 and the third valve seat port 141 in sequence, and the cathode reaction gas discharged from the humidifier 2000 can be connected to the cathode of the fuel cell 3600. At this time, the effective exchange length inside and outside the membrane tube 2200 (left and right direction in the figure) is relatively large, and the exchange efficiency is relatively high.

[0107] In the embodiment of the present application, the position of the cathode reaction gas outlet 2160 can be controlled by the regulating valve 1000 to adjust the humidity of the cathode reaction gas.

[0108] As an optional implementation, the regulating valve 1000 is disposed on a side of the housing 2100 opposite to the cathode reaction gas inlet 2120 .

[0109] In some embodiments, Figures 14 to 16 As shown, the regulating valve 1000 is disposed on the side of the housing 2100 opposite to the cathode reaction gas inlet 2120, and a cathode reaction gas outlet 2160 is disposed on the side of the housing 2100 opposite to the cathode reaction gas inlet 2120, so that the cathode reaction gas outlet 2160 is connected to the regulating valve 1000 accordingly. Figures 14 to 16 As shown, in the vertical direction of the figure, the path through which the cathode reaction gas flows is relatively long, which can improve the overall humidification efficiency of the humidifier 2000.

[0110] As an optional implementation, any one of the first valve seat opening 121 , the second valve seat opening 131 and the fourth valve seat opening 111 is disposed opposite to the cathode reaction gas inlet 2120 .

[0111] In some embodiments, any one of the first valve seat opening 121, the second valve seat opening 131 and the fourth valve seat opening 111 can be arranged opposite to the cathode reaction gas inlet 2120, so that the distance between the valve seat 100 opening arranged opposite to the cathode reaction gas inlet 2120 and the cathode reaction gas inlet 2120 can be the shortest, and its humidification efficiency can be relatively low. At the same time, the distances between the remaining valve seat 100 openings and the cathode reaction gas inlet 2120 can be made different, so that the humidifier 2000 can have different humidification efficiencies.

[0112] In other embodiments, the cathode reaction gas inlet 2120 of the humidifier 2000 may be connected to a regulating valve 1000, or the cathode reaction gas inlet 2120 and the cathode reaction gas outlet 2160 of the humidifier 2000 may be connected to the regulating valve 1000 at the same time. The manner in which the regulating valve 1000 regulates the humidification efficiency of the humidifier 2000 is the same as in the aforementioned embodiment and will not be repeated here.

[0113] Based on the same inventive concept, the present application also provides a fuel cell system, such as Fig.17 As shown, the fuel cell system includes the humidifier 2000 mentioned above.

[0114] Since the fuel cell system provided by the present invention includes the humidifier 2000 of the above technical solution, the fuel cell system provided by the present invention has all the beneficial effects of the above humidifier 2000, which will not be elaborated here.

[0115] In the following embodiments of the present application, the fuel cell system is exemplified by taking the cathode reaction gas as air, but the cathode reaction gas is not limited to air.

[0116] In some embodiments, optionally, Fig.17 As shown, the controller 3900 is signal-connected to each component in the fuel cell system for information exchange and control of each component.

[0117] Before entering the cathode 3610 of the fuel cell 3600, the cathode reaction gas flows through the air filter 3100, the air flow meter 3200, the air compressor 3300, the intercooler 3400, and the humidifier 2000 in sequence, that is, the air filter 3100, the air flow meter 3200, the air compressor 3300, the intercooler 3400, the humidifier 2000, and the cathode reaction gas inlet 3611 are connected in sequence through pipelines. Fresh dry air is filtered through the air filter 3100 as the cathode reaction gas and then enters the air flow meter 3200 to measure the flow rate. After that, it is pressurized and heated by the air compressor 3300, cooled by the intercooler 3400, and enters the humidifier 2000 for heat and moisture exchange. After being humidified by the hot and humid exhaust gas, the fresh air with a certain humidity enters the fuel cell stack as the cathode reaction gas for electrochemical reaction.

[0118] After being discharged from the fuel cell 3600, the hot and humid exhaust gas generated by the reaction of the fuel cell 3600 flows through the humidifier 2000 and the mixing device 3800 in sequence, that is, the hot and humid exhaust gas outlet 3612, the humidifier 2000 and the mixing device 3800 are connected in sequence through pipelines.

[0119] The pipeline between the intercooler 3400 and the humidifier 2000 may also be connected to the mixing device 3800 through a branch pipe, and a pressure relief valve 3710 may be provided on the branch pipe to prevent the pressure of the cathode reaction gas entering the humidifier 2000 from being too high.

[0120] A back pressure valve 3720 may be provided on the pipeline between the humidifier 2000 and the mixing device 3800. The back pressure valve 3720 may prevent the humid hot exhaust gas from flowing back, thereby maintaining a constant pressure of the humid hot exhaust gas in the pipeline between the humidifier 2000 and the mixing device 3800, even if the flow rate of the humid hot exhaust gas flowing through the humidifier 2000 is relatively stable.

[0121] The air compressor 3300 and the mixing device 3800 may be connected via a pipeline, so that excess cathode reaction gas generated by the air compressor 3300 may be discharged to the mixing device 3800.

[0122] A stack humidity sensor 3510 is provided on the pipeline between the humidifier 2000 and the cathode reaction gas inlet 3611 for detecting the humidity of the cathode reaction gas before it enters the cathode, so that the humidifier 2000 can be adjusted in real time according to the detected humidity value of the cathode reaction gas. The regulating valve 1000 is regulated by the controller 3900 to adjust the stack humidity of the cathode reaction gas so that the stack humidity of the cathode reaction gas meets the design requirements.

[0123] A stack outlet humidity sensor 3520 is provided on the pipe between the humidifier 2000 and the hot and humid exhaust gas outlet 3612, which is used to detect the humidity of the hot and humid exhaust gas before it enters the humidifier 2000, so that the humidifier 2000 can be adjusted in real time according to the detected humidity value of the hot and humid exhaust gas. The regulating valve 1000 is regulated by the controller 3900 to adjust the inlet humidity of the cathode reaction gas so that the inlet humidity of the cathode reaction gas meets the design requirements.

[0124] In the above-mentioned fuel cell system, the operation scheme of the humidifier 2000 with the highest humidity exchange efficiency can be preferentially adopted to make full use of the humidifier 2000. When the inlet humidity sensor 3510 detects that the inlet humidity of the cathode reaction gas exceeds the humidity requirement of the fuel cell stack, the controller 3900 can adjust the state of the valve core 200 of the regulating valve 1000 to gradually reduce the humidity exchange efficiency of the humidifier 2000 until the inlet humidity of the cathode reaction gas matches the humidity requirement of the fuel cell stack.

[0125] In the fuel cell system of the embodiment of the present application, the controller 3900 only needs to adjust the rotation angle of the valve core 200 in the regulating valve 1000 according to the inlet humidity of the cathode reaction gas detected by the inlet humidity sensor 3510, so as to achieve the purpose of adjusting the inlet humidity of the cathode reaction gas. In the fuel cell system, the volume is compact, there are no redundant pipes and joints, and no leakage points are added. And the control process is simple, only the inlet humidity of the cathode reaction gas detected by the inlet humidity sensor is collected, and then the rotation angle of the valve core 200 of the regulating valve 1000 is adjusted.

[0126] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0127] It should be noted that all directional indications in the embodiments of the present application are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0128] In this application, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0129] In addition, the descriptions of "first", "second", etc. in this application are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0130] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A regulating valve, characterized in that: The regulating valve is used for a humidifier, the humidifier comprises a shell and a membrane tube, the shell has a humidification chamber, the shell is provided with a cathode reaction gas inlet and a cathode reaction gas outlet connected to the humidification chamber, the membrane tube is arranged in the humidification chamber, the shell is provided with a humid hot exhaust gas inlet and a humid hot exhaust gas outlet connected to the membrane tube; the regulating valve comprises: A valve seat, wherein a core cavity and a first flow channel, a second flow channel and a third flow channel are respectively connected to the core cavity, and the valve seat is provided with a first valve seat opening connected to the first flow channel, a second valve seat opening connected to the second flow channel and a third valve seat opening connected to the third flow channel, the first valve seat opening and the second valve seat opening are located on the same side of the valve seat; and, a valve core, the valve core being rotatably disposed in the core cavity, the valve core being provided with a first valve port and a second valve port which are connected to each other, the valve core being rotated relative to the valve seat so that the first valve port is connected to the first flow channel or the second flow channel correspondingly, and the second valve port is used to be connected to the third flow channel; The regulating valve is arranged on the shell, and the first valve seat port and the second valve seat port of the regulating valve are connected to the humidification chamber through the cathode reaction gas inlet, or the first valve seat port and the second valve seat port of the regulating valve are connected to the humidification chamber through the cathode reaction gas outlet.

2. The regulating valve according to claim 1, characterized in that: The valve seat is provided with a fourth valve seat opening communicating with the core cavity, and the fourth valve seat opening, the first valve seat opening and the second valve seat opening are located on the same side of the valve seat; The valve core is provided with a fourth valve port communicating with the second valve port, and the valve core can rotate relative to the valve seat so that the fourth valve port is communicated with the fourth valve seat port correspondingly.

3. The regulating valve according to claim 2, characterized in that: The valve core includes a bottom core body in a hollow cylindrical structure and a top core body in a hollow cylindrical structure; wherein the first valve port is opened on the side wall of the bottom core body, the fourth valve port is opened on the bottom surface of the bottom core body, and the second valve port is opened on the side wall of the top core body.

4. The regulating valve according to claim 3, characterized in that: The distribution range of the first valve openings on the side wall of the bottom core is less than or equal to 90°.

5. The regulating valve according to claim 3 or 4, characterized in that: The fourth valve seat opening is an arc-shaped opening or a fan-shaped opening with an angle less than or equal to 90°, and the fourth valve port is an arc-shaped opening or a fan-shaped opening with an angle less than or equal to 90°; or, the fourth valve seat opening is two arc-shaped openings or fan-shaped openings that are oppositely arranged and are less than or equal to 90°, and the fourth valve port is two arc-shaped openings or fan-shaped openings that are oppositely arranged and are less than or equal to 90°; and when the first valve port is not connected with the first flow channel or the second flow channel, the fourth valve port is connected with the fourth valve seat port.

6. The regulating valve according to claim 3, characterized in that: The valve core further comprises a transmission shaft arranged on the top core body, and the transmission shaft passes through the core cavity and is located outside the valve seat.

7. A humidifier, characterized in that: The humidifier comprises: A shell having a humidification chamber therein, and a cathode reaction gas inlet and a cathode reaction gas outlet connected to the humidification chamber are provided on the shell. A membrane tube, wherein the membrane tube is arranged in the humidification chamber, and the shell is provided with a humid hot exhaust gas inlet and a humid hot exhaust gas outlet communicated with the membrane tube; and The regulating valve according to any one of claims 1 to 6, wherein the regulating valve is arranged on the shell, and the first valve seat port and the second valve seat port of the regulating valve are connected to the humidification chamber through the cathode reaction gas inlet, or the first valve seat port and the second valve seat port of the regulating valve are connected to the humidification chamber through the cathode reaction gas outlet.

8. The humidifier according to claim 7, characterized in that The valve seat is provided with a fourth valve seat opening connected to the core cavity, and the fourth valve seat opening, the first valve seat opening and the second valve seat opening are located on the same side of the valve seat; the valve core is provided with a fourth valve opening connected to the second valve opening, and the valve core rotates relative to the valve seat to make the first valve opening connected to the first flow channel or the second flow channel correspondingly, or to make the fourth valve opening connected to the fourth valve seat opening; the fourth valve seat opening is connected to the humidification chamber.

9. The humidifier according to claim 8, characterized in that The regulating valve is disposed on a side of the housing opposite to the cathode reaction gas inlet.

10. The humidifier according to claim 9, characterized in that Any one of the first valve seat opening, the second valve seat opening, and the fourth valve seat opening is arranged opposite to the cathode reaction gas inlet.

11. A fuel cell system, characterized in that: The fuel cell system comprises the humidifier according to any one of claims 7 to 10.

Images