Gas-water separation and sound elimination integrated device and fuel cell heat dissipation system

Abstract

The present application relates to the field of fuel cell, disclose a kind of gas-water separation and sound attenuation integrated device and fuel cell heat dissipation system, gas flow enters the first resonance cavity and expansion cavity of sharply increasing cross-sectional area by inlet pipe, part of gas-water mixture in expansion cavity enters the second resonance cavity of sharply expanding cross-sectional area by second muffling pipe, another part of gas-water mixture in expansion cavity enters into cyclone gas-water separation component to carry out gas-water separation, separated water falls into the second resonance cavity, part of separated gas enters the second resonance cavity of sharply increasing cross-sectional area, another part of separated gas is directly discharged into inlet pipe, sound wave is reflected multiple times by multiple mutations, and can play a good sound attenuation effect. Gas-water separation and noise blocking are carried out by using cyclone gas-water separation component, which improves the sound attenuation and gas-water separation effect, and the integration of sound attenuation and gas-water separation, with high integration degree and small space occupation.

Description

Technical Field

[0001] This invention relates to the field of fuel cell technology, and in particular to an integrated gas-water separation and noise reduction device and a fuel cell heat dissipation system. Background Technology

[0002] The water produced by the hydrogen fuel cell stack reaction has a maximum temperature of only about 90°C, and the heat carried by the stack exhaust and the radiant heat are also very small. Therefore, the heat generated during the operation of the hydrogen fuel cell is mainly carried away by the radiator, but this will undoubtedly increase the heat dissipation load of the vehicle's cooling system significantly.

[0003] Typically, compared to a fuel cell engine of the same power output, a fuel cell engine requires twice as much heat to be carried away by the coolant. This necessitates a corresponding increase in the heat dissipation area of ​​the radiator, the airflow of the cooling fan, and the effective ventilation area of ​​the entire vehicle. The heat dissipation area may even need to increase by more than 1.8 times, resulting in a larger radiator footprint. Furthermore, while increasing the number of radiators can meet the cooling requirements of the fuel cell engine, it increases the complexity of piping layout, which also increases the radiator's footprint.

[0004] Therefore, existing technologies typically employ a combination of water cooling and air cooling to cool the radiator. While using air cooling to cool the radiator, water mist is sprayed onto the heat exchanger to carry away the heat from the radiator surface. The water forming the spray is the gas-water mixture discharged from the air outlet of the fuel cell, which is then separated into water by a gas-water separator.

[0005] However, using a gas-water separator for gas-water separation has the problem of high noise. Although the noise can be reduced by setting up a silencer, it will increase the space occupied by the entire fuel cell heat dissipation system. Summary of the Invention

[0006] The purpose of this invention is to provide an integrated gas-water separation and noise reduction device and a fuel cell heat dissipation system, which can improve the gas-water separation effect and noise reduction effect, increase the integration of the fuel cell heat dissipation system, and reduce the space occupied by the fuel cell heat dissipation system.

[0007] To achieve this objective, the present invention employs the following technical solution: The integrated gas-liquid separation and noise reduction device includes: A detachable muffler housing is provided, wherein an air inlet pipe and an air outlet pipe are respectively connected to the opposite side walls of the detachable muffler housing; A first partition is disposed inside the separation silencing shell and divides the inner cavity of the separation silencing shell into a first resonant cavity and a silencing cavity. The partition is provided with a plurality of first silencing holes. The first resonant cavity is connected to the silencing cavity through the first silencing holes. The first resonant cavity is connected to the air intake pipe. The second partition divides the silencing cavity into an expansion cavity and a resonant cavity. The second partition is provided with a plurality of second silencing holes. The expansion cavity is connected to the second resonant cavity through the second silencing holes. The second resonant cavity is connected to the air outlet pipe. A swirling gas-liquid separation component is installed inside the second partition. The gas in the expansion cavity enters the second resonant cavity after being separated into gas and water by the swirling gas-liquid separation component.

[0008] As a preferred technical solution of the above-mentioned gas-water separation and noise reduction integrated device, a drain outlet is provided at the bottom of the second resonant cavity.

[0009] As a preferred technical solution of the above-mentioned integrated gas-liquid separation and noise reduction device, the cyclone gas-liquid separation component includes: A silencer tube, which penetrates and is fixed to the second partition, with one end of the silencer tube communicating with the expansion cavity and the other end communicating with the second resonant cavity; The cyclone gas-water separation unit is installed inside the silencer.

[0010] As a preferred technical solution of the above-mentioned integrated gas-water separation and noise reduction device, one end of the gas outlet pipe has an insertion end that is horizontally inserted into the outlet end of the gas-water separation component; The overflow channel is formed between the lower outer peripheral wall of the insertion end and the lower inner peripheral wall of the outlet end. The overflow channel is higher than the drain outlet and communicates with the drain outlet.

[0011] As a preferred technical solution of the above-mentioned gas-water separation and noise reduction integrated device, the insertion end is formed with an insertion conical ring that is gradually expanded and contracted along the airflow direction.

[0012] As a preferred technical solution of the above-mentioned gas-water separation and noise reduction integrated device, one end of the air inlet pipe is inserted into the first resonant cavity and connected to the first partition plate; The first resonant cavity is provided with a first silencer tube, one end of which is connected to the air intake tube, and the other end extends to the side opposite to the first partition plate. And / or, a second silencing tube is fixed on the second partition, with one end of the second silencing tube placed in the expansion cavity and the other end placed in the second resonance cavity.

[0013] On the other hand, the present invention also provides a fuel cell heat dissipation system, including the gas-water separation and noise reduction integrated device described in any of the above embodiments, wherein the air inlet pipe is used to connect to the exhaust port of the fuel cell stack. The fuel cell cooling system also includes: A radiator, wherein the medium inlet of the radiator is used to connect to the coolant outlet of the fuel cell stack, and the medium outlet of the radiator is used to connect to the coolant inlet of the fuel cell stack; the radiator has an upstream side and a downstream side arranged opposite to each other along the airflow direction; A water storage tank is used to hold the liquid water separated by the cyclone gas-liquid separation component; A cooling fan that enables airflow from the upstream side to the downstream side; A heat dissipation atomization unit is used to atomize water into water mist and spray the water mist towards the upstream side of the radiator; A spray water pump is used to deliver water from the water storage tank to the heat dissipation atomization unit; A heating element is used to heat the water in the water storage tank.

[0014] As a preferred technical solution for the above-mentioned fuel cell heat dissipation system, the bottom of the second resonant cavity is provided with a drain outlet, and the water storage tank is located directly below the separated silencing shell and is directly connected to the second resonant cavity through the drain outlet.

[0015] As a preferred technical solution of the above-mentioned fuel cell heat dissipation system, it also includes a spray housing, and the spray water pump is disposed inside the spray housing; The spray housing is located directly below the separation silencer housing and at the same end as the air inlet pipe on the separation silencer housing. The spray housing is connected to the separation silencer housing and the water storage tank.

[0016] As a preferred technical solution for the aforementioned fuel cell heat dissipation system, the heating component includes: A heat exchanger, one end of which is connected to the coolant outlet of the fuel cell stack, and the other end of which is connected to the medium inlet of the radiator or is used to connect to the coolant inlet of the fuel cell stack; and / or, An electric heating unit is used to heat the water in the water storage tank.

[0017] The beneficial effects of this invention are as follows: The gas-water separation and silencing integrated device and fuel cell heat dissipation system provided by this invention allow airflow to enter the first resonant cavity and expansion cavity with a rapidly increasing cross-sectional area through the inlet pipe. A portion of the gas-water mixture in the expansion cavity then enters the second resonant cavity with a rapidly increasing cross-sectional area through the second silencing pipe. The remaining portion of the gas-water mixture in the expansion cavity enters the swirling gas-water separation component for gas-water separation. The separated water falls into the second resonant cavity, while a portion of the separated gas enters the second resonant cavity with a rapidly increasing cross-sectional area. The remaining gas is directly discharged through the air pipe. Multiple abrupt changes cause multiple reflections of the sound waves, resulting in destructive interference, which effectively reduces noise. The swirling gas-water separation component can also be used to block noise, improving the silencing effect of the gas-water separation and silencing integrated device. Furthermore, placing the swirling gas-water separation component on the second partition plate enables gas-water separation, achieving integration of silencing and gas-water separation. The integrated gas-water separation and silencing device has a high degree of integration, reduces the number of pipes, occupies less space, reduces weight, and lowers costs. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of the present invention and these drawings without creative effort.

[0019] Figure 1 This is a cross-sectional view of the gas-water separation and noise reduction integrated device provided in the embodiments of the present invention; Figure 2 This is a schematic diagram of the first fuel cell heat dissipation system provided in the embodiments of the present invention; Figure 3 This is a schematic diagram of the second fuel cell heat dissipation system provided in the embodiments of the present invention; Figure 4 This is a schematic diagram of the third fuel cell heat dissipation system provided in the embodiments of the present invention; Figure 5 This is a schematic diagram of the fourth fuel cell heat dissipation system provided in the embodiments of the present invention; Figure 6 This is a cross-sectional view of a fuel cell heat dissipation system with an integrated gas-water separation and noise reduction device and a water tank, as provided in an embodiment of the present invention. Figure 7 This is a cross-sectional view of a fuel cell heat dissipation system with an integrated gas-water separation and noise reduction device, a water tank, and a spray shell, as provided in an embodiment of the present invention.

[0020] In the picture: 1. Separating silencer shell; 2. First partition; 3. Second partition; 4. Cyclone air-water separation assembly; 41. Silencer cylinder; 411. Outlet conical ring; 42. Cyclone air-water separation unit; 5. Inlet pipe; 6. Outlet pipe; 71. Inlet conical ring; 8. First silencer pipe; 9. Second silencer pipe; 10. Drain outlet; 11. First resonant cavity; 12. Expansion cavity; 13. Second resonant cavity; 100. Gas-water separation and noise reduction integrated device; 200. Radiator; 300. Water storage tank; 400. Cooling fan; 500. Heat dissipation atomization unit; 600. Spray water pump; 700. Heat exchanger; 800. Spray shell; 900. Coolant control valve; 1000. Air storage tank; 1001. Heat dissipation atomization jet valve; 1002. Filter unit; 1003. Drainage atomization unit; 1004. Low temperature drainage atomization valve; 1005. Low temperature drainage jet valve; 1006. Drain valve; 1007. Heat dissipation atomization control valve; 1008. Electric heating unit; 1009. Fuel cell stack; 1010. Pressure reducing valve. Detailed Implementation

[0021] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0022] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0023] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0024] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0025] like Figure 1 As shown, this embodiment of the invention also provides an integrated gas-water separation and silencing device, including a separation and silencing shell 1, a first partition 2, a second partition 3, and a swirling gas-water separation component 4. The separation and silencing shell 1 has an inlet pipe 5 and an outlet pipe 6 connected to opposite side walls, respectively. The first partition 2 is disposed within the separation and silencing shell 1 and divides the inner cavity of the shell 1 into a first resonant cavity 11 and a silencing cavity. The inlet pipe 5 communicates with the silencing cavity, and the first resonant cavity 11 is connected to the inlet pipe 5 via a first silencing pipe 8. The second partition 3 divides the silencing cavity into an expansion cavity 12 and a second resonant cavity 13. The expansion cavity 12 is connected to the second resonant cavity 13 via a second silencing pipe 9, and is also connected to the inlet pipe 5. The second resonant cavity 13 is connected to the outlet pipe 6. The swirling gas-water separation component 4 is installed on the second partition 3. Gas in the expansion cavity 12 undergoes gas-water separation via the swirling gas-water separation component 4 before entering the second resonant cavity 13.

[0026] Airflow enters the first resonant cavity 11 and the expansion cavity 12, whose cross-sectional area increases dramatically, through the intake pipe 5. A portion of the gas-water mixture in the expansion cavity 12 then passes through the second silencer pipe 9 into the second resonant cavity 13, whose cross-sectional area also increases dramatically. The remaining gas-water mixture in the expansion cavity 12 enters the swirling gas-water separator 4 for gas-water separation. The separated water falls into the second resonant cavity 13, while a portion of the separated gas enters the second resonant cavity 13, whose cross-sectional area increases dramatically. The remaining gas is directly discharged through the air pipe 6. Multiple abrupt changes cause multiple reflections of the sound waves, resulting in destructive interference and effectively reducing noise. The swirling gas-water separator 4 can also be used to block noise, improving the noise reduction effect of the integrated gas-water separation and silencer device 100. Furthermore, by placing the swirling gas-water separator 4 on the second partition 3, it can achieve gas-water separation, integrating noise reduction and gas-water separation. The integrated gas-water separation and silencer device 100 has a high degree of integration, reducing the number of pipes, occupying less space, reducing weight, and lowering costs.

[0027] In some embodiments, such as Figure 1As shown, the swirling air-water separation assembly 4 includes a silencer 41 and a swirling air-water separation unit 42. The silencer 41 penetrates and is fixed to the second partition 3, with one end connected to the expansion cavity 12 and the other end connected to the second resonant cavity 13. The swirling air-water separation unit 42 is installed inside the silencer 41. The airflow entering the silencer 41 achieves water-air separation using the swirling air-water separation unit 42.

[0028] In some embodiments, such as Figure 1 As shown, one end of the vent pipe 6 has an insertion end that is horizontally inserted into the outlet end of the cyclone gas-water separator 4; an overflow channel is formed between the lower outer peripheral wall of the insertion end and the lower inner peripheral wall of the outlet end, and the overflow channel is higher than and connected to the drain outlet 10. This design allows the water separated by the cyclone gas-water separator 4 to flow out of the outlet end through the overflow channel and fall to the bottom of the second resonant cavity 13; while the gas separated by the cyclone gas-water separator 4 can directly enter the vent pipe 6 through the insertion end and be discharged through the vent pipe 6.

[0029] Optionally, a drain outlet 10 is provided at the bottom of the second resonant cavity 13, through which water deposited at the bottom of the second resonant cavity 13 can be discharged, so as to avoid excessive water accumulation in the second resonant cavity 13 and thus affect the gas-water separation effect of the cyclone gas-water separation component 4.

[0030] In some embodiments, such as Figure 1 As shown, the insertion end is an insertion conical ring that tapers in the direction of airflow. This design allows the insertion conical ring to form a water-blocking ring, preventing water separated by the swirling air-water separator 4 from entering the outlet pipe 6 with the airflow. Specifically, the outlet end is an outlet conical ring 411 that expands in the direction of airflow, facilitating the insertion of the insertion conical ring into the outlet conical ring 411.

[0031] In some embodiments, such as Figure 1 As shown, the intake pipe 5 passes through the first resonant cavity 11, and one end of the intake pipe 5 passes through and is connected to the first partition 2. The first partition 2 is used to support the intake pipe 5.

[0032] In some embodiments, the first silencer 8 is disposed in the first resonant cavity 11, one end of the first silencer 8 is connected to the air intake pipe 5, and the other end extends to the side opposite to the first partition 2.

[0033] For example, the first muffler 8 and the air intake 5 are integrally formed. In other embodiments, the first muffler 8 and the air intake 5 may also be welded together.

[0034] In some embodiments, such as Figure 1As shown, one end of the second silencer tube 9 is placed inside the expansion cavity 12, and the other end passes through the second partition plate 3 and is placed inside the second resonant cavity 13. Exemplarily, the second partition plate 3 has a through hole, through which the second silencer tube 9 passes. The second silencer tube 9 and the through hole are interference-fitted, resulting in a simple installation method and low cost. In other embodiments, the second silencer tube 9 and the second partition plate 3 can also be welded together, or the second silencer tube 9 and the second partition plate 3 can be integrally formed.

[0035] This invention also provides a fuel cell heat dissipation system, which is used to dissipate heat from the fuel cell stack 1009 to ensure the normal operation of the fuel cell stack 1009.

[0036] like Figure 2 As shown, the fuel cell cooling system includes a radiator 200, a cooling fan 400, a water tank 300, a cooling atomizing unit 500, a spray water pump 600, and the aforementioned gas-water separation and silencing integrated device 100. The medium inlet of the radiator 200 is connected to the coolant outlet of the fuel cell stack 1009, and the medium outlet of the radiator 200 is connected to the coolant inlet of the fuel cell stack 1009. The radiator 200 has an upstream side and a downstream side arranged opposite to each other along the airflow direction. The cooling fan 400 enables airflow from the upstream side to the downstream side; the air inlet pipe 5 of the gas-water separation and silencing integrated device 100 is used to connect to the exhaust port of the fuel cell stack 1009; the water tank 300 is used to hold the liquid water separated by the swirling gas-water separation component 4; the cooling atomizing unit 500 is used to atomize the water into a mist and spray the mist towards the upstream side of the radiator 200; and the spray water pump 600 is used to deliver water from the water tank 300 to the cooling atomizing unit 500. For example, the heat dissipation atomizing unit 500 is an atomizing nozzle.

[0037] The high-temperature coolant discharged from the fuel cell stack 1009 enters the radiator 200 and is cooled by the cooling fan 400. After the coolant in the radiator 200 is cooled down, it flows back into the fuel cell stack 1009 to dissipate heat. The water separated by the air-water separation and noise reduction integrated device 100 is stored in the water storage tank 300. When the temperature of the coolant in the radiator 200 is high, if the cooling fan 400 cannot meet the heat dissipation requirements of the radiator 200, the water in the water storage tank 300 can be sent to the heat dissipation atomizing unit 500 while the cooling fan 400 is cooling the radiator 200. The heat dissipation atomizing unit 500 will form water mist and spray it onto the surface of the radiator 200, so that the water mist absorbs the heat emitted by the radiator 200. In addition, the cooling fan 400 enhances the air circulation around the radiator 200, which not only cools the radiator 200, but also helps the water mist absorb the heat on the surface of the radiator 200 and evaporate.

[0038] However, in practical applications, it has been found that the water mist sprayed onto the surface of the radiator 200 may accumulate on the outer surface of the radiator 200, affecting the heat dissipation from the surface of the radiator 200 and thus preventing the cooling effect of the radiator 200 from reaching the desired level. Therefore, this embodiment incorporates a heating component to heat the water in the water tank 300, thereby causing the heat dissipation atomizing unit 500 to spray out a higher-temperature water mist. This facilitates the evaporation of the water mist after absorbing heat from the surface of the radiator 200, preventing the accumulation of liquid water mist on the surface of the radiator 200 and thus improving the cooling effect of the radiator 200; it also helps to cool the coolant.

[0039] In some embodiments, the heating component includes a heat exchanger 700, one end of which is connected to the coolant outlet of the fuel cell stack 1009, and the other end is connected to the coolant inlet of the fuel cell stack 1009. This configuration allows the high-temperature coolant discharged from the fuel cell stack 1009 to heat the water in the water storage tank 300, while simultaneously allowing the low-temperature water in the water storage tank 300 to cool the coolant discharged from the fuel cell stack 1009. It should be noted that the other end of the heat exchanger 700 can also be connected to the medium inlet of the radiator 200, that is, the coolant after heat exchange with the water in the water storage tank 300 can be sent to the radiator 200.

[0040] In some embodiments, the heating assembly further includes an electric heating unit 1008 for heating the water in the water storage tank 300. Exemplarily, the electric heating unit 1008 is disposed on the inner bottom wall of the water storage tank 300. The structure of the electric heating unit 1008 can employ existing coil heating structures, etc., and is not specifically limited here. Furthermore, in low-temperature environments, the water in the water storage tank 300 may freeze. During fuel cell startup, the electric heating unit 1008 can be used to heat the water storage tank 300 to melt the ice.

[0041] like Figure 6 and Figure 7 As shown, the bottom of the second resonant cavity 13 is provided with a drain outlet 10, and the water storage tank 300 is located directly below the separation silencing shell 1 and is directly connected to the second resonant cavity 13 through the drain outlet 10. Since the water storage tank 300 is located below the separation silencing shell 1, the water at the bottom of the second resonant cavity 13 will fall into the second resonant cavity 13 through the drain outlet 10 under the action of gravity. This eliminates the need for the water pump and valve between the water storage tank and the gas-water separator in the prior art, reduces the number of parts, improves the integration of the fuel cell heat dissipation system, and reduces the space occupied, weight and cost of the entire fuel cell heat dissipation system.

[0042] In some other embodiments, a drain pipe can be installed at the drain outlet 10 to drain water from the second resonant cavity 13. When used in a fuel cell cooling system, the drain pipe can be connected to the water storage tank 300 via a suction valve and a self-priming pump. A liquid level detection unit, such as a liquid level sensor, is installed in the second resonant cavity 13. When the water stored in the second resonant cavity 13 reaches a certain level, the self-priming pump pumps the water from the second resonant cavity 13 to the water storage tank 300.

[0043] In some embodiments, such as Figure 2 As shown, a heat dissipation atomization control valve 1007 is connected between the spray water pump 600 and the heat dissipation atomization unit 500. When it is necessary to spray the radiator 200 for heat dissipation, the heat dissipation atomization control valve 1007 is opened; when it is not necessary to spray the radiator 200 for heat dissipation, the heat dissipation atomization control valve 1007 is closed. For example, the heat dissipation atomization control valve 1007 is a solenoid valve.

[0044] In some embodiments, the fuel cell cooling system further includes a water temperature detection unit for detecting the inlet water temperature of the cooling atomization unit 500, so as to detect in real time whether the water temperature delivered to the cooling atomization unit 500 is appropriate. Exemplarily, the water temperature detection unit is located between the outlet of the spray water pump 600 and the inlet of the cooling atomization control valve 1007. The water temperature detection unit uses a temperature and pressure sensor, and the rotation speed of the spray water pump 600 is adjustable. The rotation speed of the spray water pump 600 can be adjusted according to the water pressure detected by the water temperature detection unit to ensure that the pressure of the water delivered to the cooling atomization unit 500 meets the requirements, thereby ensuring that the travel distance of the water mist sprayed by the cooling atomization unit 500 meets the requirements, which is beneficial to improving the heat exchange effect between the water mist and the radiator 200.

[0045] In some embodiments, such as Figure 2As shown, the fuel cell cooling system also includes a coolant control valve 900 and a coolant temperature detection unit. The inlet of the coolant control valve 900 is connected to the coolant outlet of the fuel cell stack 1009, and the outlet of the coolant control valve 900 can selectively connect to at least one of the medium inlets of the heat exchanger 700 and the radiator 200. The coolant temperature detection unit is used to detect the coolant temperature at the coolant outlet of the fuel cell stack 1009. Given a fixed maximum power of the cooling fan 400, a higher coolant temperature at the coolant outlet of the fuel cell stack 1009 places higher demands on the cooling capacity of the cooling fan 400. The activation of the heat dissipation atomization unit 500 is determined based on the coolant temperature at the coolant outlet of the fuel cell stack 1009. When the coolant temperature at the coolant outlet of the fuel cell stack 1009 is too high, exceeding the maximum heat dissipation capacity of the cooling fan 400, the heat dissipation atomization unit 500 can be activated. Through the coolant control valve 900, a portion of the coolant discharged from the coolant outlet of the fuel cell stack 1009 is sent into the heat exchanger 700. This not only raises the temperature of the water in the water tank 300 to improve the atomization effect of the heat dissipation atomization unit 500, but also lowers the temperature of the coolant.

[0046] When the heat dissipation atomization unit 500 is not required to work, a portion of the coolant discharged from the coolant outlet of the fuel cell stack 1009 can be sent into the heat exchanger 700 through the coolant control valve 900, so as to use the water in the water tank 300 to cool the coolant.

[0047] In some other embodiments, since the temperature of the water tank 300 is greatly reduced after the coolant in the heat exchanger 700 heats up the water tank 300, the heat exchanger 700 can also be connected to the medium inlet of the radiator 200. The cooled coolant in the heat exchanger 700 and the uncooled coolant are sent into the radiator 200 together, which can cool the coolant entering the radiator 200.

[0048] In some embodiments, such as Figure 2 As shown, the fuel cell cooling system also includes a gas storage tank 1000 and a heat dissipation atomizing jet valve 1001. The gas storage tank 1000 stores high-pressure gas, and is connected to the heat dissipation atomizing unit 500 via the heat dissipation atomizing jet valve 1001. Specifically, the inlet of the heat dissipation atomizing jet valve 1001 is connected to the gas storage tank 1000, and the outlet of the heat dissipation atomizing jet valve 1001 is connected to the inlet of the heat dissipation atomizing unit 500. For example, the high-pressure gas stored in the gas storage tank 1000 is compressed air.

[0049] When this fuel cell cooling system is used in a vehicle, an air compression unit, such as an air pump or air compressor, can be configured to compress air and store it in the air tank 1000. Specifically, the cooling atomizing unit 500 can be constructed by adding an air inlet for introducing high-pressure air to the structure of a conventional atomizing nozzle. The air inlet is connected to the atomizing channel of the atomizing nozzle. By introducing high-pressure gas into the atomizing channel through the air inlet, the atomization effect of the cooling atomizing unit 500 can be enhanced. This not only improves air circulation but also facilitates the evaporation of water mist, thereby preventing the formation of water droplets on the surface of the radiator 200. In other embodiments, the cooling atomizing jet valve 1001 can be connected to the jet head. The jet head is used to spray high-pressure gas around the nozzle of the atomizing nozzle, using the high-pressure gas to perform secondary atomization on the water mist that has just been sprayed, which facilitates the evaporation of the water mist.

[0050] It should be noted that the heat dissipation atomizing unit 500 can also adopt a mesh spray structure, a pipeline dot matrix spray structure, etc., which will not be described in detail here.

[0051] Optionally, the fuel cell cooling system further includes a pressure reducing valve 1010 to reduce the pressure of the high-pressure gas supplied from the gas storage tank 1000 to the cooling atomizing unit 500. Exemplarily, the pressure reducing valve 1010 is a solenoid valve.

[0052] Because the water storage tank has a limited storage capacity of 300 cubic meters, excess water needs to be drained during low winter temperatures. To prevent water from being directly discharged onto the road surface and causing it to freeze, in some embodiments, such as... Figure 4 As shown, the fuel cell cooling system also includes a liquid level detection unit and a drainage atomization unit 1003. The liquid level detection unit is used to detect the liquid level in the water tank 300. The inlet of the drainage atomization unit 1003 is connected between the outlet of the spray water pump 600 and the inlet of the cooling atomization unit 500 through a low-temperature drainage atomization valve 1004. For example, the liquid level detection unit is a liquid level sensor, and the drainage atomization unit 1003 is an atomizing nozzle. In low-temperature winter environments, if the liquid level detection unit detects that the water level in the water tank 300 is higher than the set maximum water level, and it is necessary to drain the excess water from the water tank 300, the low-temperature drainage atomization valve 1004 can be opened. The spray water pump 600 can then send the excess water from the water tank 300 to the drainage atomization unit 1003. The excess water in the water tank 300 is atomized by the drainage atomization unit 1003 and discharged in the form of water mist. Even if the water mist cools down and condenses into water droplets and then freezes, only small ice particles are formed, which will not affect vehicle operation.

[0053] It should be noted that when the above-mentioned fuel cell cooling system is used in a vehicle, the drainage atomizing unit 1003 can be installed at the upper part of the rear of the vehicle to preferentially discharge the spray to a higher position, which is conducive to the formation of small ice particles.

[0054] In some embodiments, such as Figure 5 As shown, the fuel cell cooling system also includes a cryogenic drainage jet valve 1005, the inlet of which is connected between the outlet of the pressure reducing valve 1010 and the inlet of the cooling atomizing jet valve 1001; the inlet of the drainage atomizing unit 1003 is connected to the outlet of the cryogenic drainage jet valve 1005. High-pressure gas is fed into the drainage atomizing unit 1003 through the cryogenic drainage jet valve 1005 to improve the atomization effect of the drainage atomizing unit 1003. Specifically, the drainage atomizing unit 1003 is provided with a high-pressure gas port for connecting to the outlet of the cryogenic drainage jet valve 1005. In other embodiments, the outlet of the cryogenic drainage jet valve 1005 can also be connected to a jet unit, which sprays high-pressure gas around the nozzle of the drainage atomizing unit 1003 to enhance airflow and prevent the water mist sprayed from the drainage atomizing unit 1003 from agglomerating into large water droplets, thus promoting the formation of small ice particles.

[0055] Since the water storage tank 300 has a limited water storage capacity, excess water needs to be drained during high summer temperatures. Therefore, in some embodiments, a drain valve 1006 can be installed at the bottom of the water storage tank 300. When the liquid level detection unit detects that the liquid level in the water storage tank 300 is too high, the excess water in the water storage tank 300 can be drained in a timely manner. Furthermore, the drain valve 1006 can also be opened to drain water from the water storage tank 300 when cleaning the water storage tank 300 is required or after the fuel cell is shut down in low-temperature environments. Exemplarily, the drain valve 1006 is a solenoid valve.

[0056] In some embodiments, such as Figures 2 to 5 As shown, the fuel cell cooling system also includes a filter unit 1002, which is connected between the water storage tank 300 and the spray water pump 600. The filter unit 1002 filters the water sent to the spray water pump 600 to prevent the spray water pump 600, the heat dissipation atomizing unit 500, the drainage atomizing unit 1003, etc. from becoming clogged.

[0057] In some embodiments, such as Figure 7 As shown, the fuel cell cooling system also includes a spray housing 800, a spray water pump 600, and a filter unit 1002, all housed within the spray housing 800. The spray housing 800 is located directly below the separation silencing housing 1 and shares the same end as the air inlet pipe 5 within the separation silencing housing 1. The spray housing 800, the separation silencing housing 1, and the water storage tank 300 are connected together. This design fully utilizes the space beneath the separation silencing housing 1, improving the integration of the fuel cell cooling system and reducing its footprint.

[0058] Furthermore, the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention, the scope of which is determined by the scope of the appended claims.

Claims

1. An integrated device for gas-water separation and noise reduction, characterized in that, include: Separate silencer housing (1), with an air inlet pipe (5) and an air outlet pipe (6) respectively connected to the opposite side walls of the separate silencer housing (1); The first partition (2) is disposed inside the separation silencing shell (1) and divides the inner cavity of the separation silencing shell (1) into a first resonance cavity (11) and a silencing cavity. The first resonance cavity (11) is connected to the air intake pipe (5) through the first silencing pipe (8). The second partition (3) divides the silencing cavity into an expansion cavity (12) and a second resonant cavity (13). The second partition (3) is provided with a plurality of second silencing holes. The expansion cavity (12) is connected to the second resonant cavity (13) through the second silencing pipe (9). The expansion cavity (12) is connected to the air inlet pipe (5). The second resonant cavity (13) is connected to the air outlet pipe (6). The swirling gas-water separation component (4) is installed on the second partition (3). The gas in the expansion cavity (12) is separated into gas and water by the swirling gas-water separation component (4) and then enters the second resonant cavity (13).

2. The integrated gas-water separation and noise reduction device according to claim 1, characterized in that, The bottom of the second resonant cavity (13) is provided with a drain outlet (10).

3. The integrated gas-water separation and noise reduction device according to claim 2, characterized in that, The cyclone gas-water separation component (4) includes: A silencer (41) is inserted through and fixed to the second partition (3), and one end of the silencer (41) is connected to the expansion cavity (12), and the other end is connected to the second resonant cavity (13); The cyclone gas-water separation unit (42) is installed inside the silencer (41).

4. The integrated gas-water separation and noise reduction device according to claim 3, characterized in that, One end of the air outlet pipe (6) has an insertion end that is horizontally inserted into the outlet end of the swirling air-water separation component (4); An overflow channel is formed between the lower outer peripheral wall of the insertion end and the lower inner peripheral wall of the outlet end, and the overflow channel is higher than the drain outlet (10).

5. The integrated gas-water separation and noise reduction device according to claim 4, characterized in that, The insertion end is formed with an insertion cone-shaped ring that gradually expands and contracts along the airflow direction.

6. The integrated gas-water separation and noise reduction device according to claim 1, characterized in that, The air intake pipe (5) passes through the first resonant cavity (11), and one end of the air intake pipe (5) passes through the first partition (2) and is connected to the first partition (2).

7. A fuel cell cooling system, characterized in that, Includes the gas-water separation and silencing integrated device (100) according to any one of claims 1 to 6, wherein the air inlet pipe (5) is used to connect to the exhaust port of the fuel cell stack (1009); The fuel cell cooling system also includes: A radiator (200) has a medium inlet for connecting to the coolant outlet of a fuel cell stack (1009) and a medium outlet for connecting to the coolant inlet of the fuel cell stack (1009); the radiator (200) has an upstream side and a downstream side arranged opposite to each other along the airflow direction. A water storage tank (300) is used to hold the liquid water separated by the cyclone gas-water separation component (4); A cooling fan (400) is provided that enables airflow from the upstream side to the downstream side; A heat dissipation atomizing unit (500) is used to atomize water into water mist and spray the water mist towards the upstream side of the radiator (200); A spray water pump (600) is used to deliver water in the water storage tank (300) to the heat dissipation atomizing unit (500). A heating component is used to heat the water in the water storage tank (300).

8. The fuel cell heat dissipation system according to claim 7, characterized in that, The bottom of the second resonant cavity (13) is provided with a drain outlet (10), and the water storage tank (300) is located directly below the separate silencing shell (1) and is directly connected to the second resonant cavity (13) through the drain outlet (10).

9. The fuel cell heat dissipation system according to claim 8, characterized in that, It also includes a spray housing (800), and the spray water pump (600) is disposed inside the spray housing (800); The spray housing (800) is located directly below the separation silencing housing (1) and at the same end as the air inlet pipe (5) on the separation silencing housing (1). The spray housing (800), the separation silencing housing (1), and the water storage tank (300) are connected together.

10. The fuel cell heat dissipation system according to claim 7, characterized in that, The heating component includes: A heat exchanger (700), one end of which is connected to the coolant outlet of the fuel cell stack (1009), and the other end of which is connected to the coolant inlet of the fuel cell stack (1009); and / or, An electric heating unit (1008) is used to heat the water in the water storage tank (300).

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