JP2024013907A - Temperature adjustment system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a temperature adjustment system which can be mounted on a vehicle and includes an absorbent, and enables the absorbent to effectively absorb a water content by wetting an outer air even when a relative humidity of the outer air is low.

SOLUTION: A temperature adjustment system B comprises: a water storage portion 54 that stores generated water generated by the power generation of a fuel battery 1, and generates a water-containing air by wetting an outer air introduced from outside; a blower 51 that introduces the outer air from the outside and feeds the outer air to the storage portion 54; and an adsorption portion 57 that generates heated dry air by absorbing water contained in the water-containing air by supplying the water-containing air exhausted from the water storage portion 54.

SELECTED DRAWING: Figure 1

COPYRIGHT: (C)2024,JPO&INPIT

Description

TECHNICAL FIELD The present invention relates to temperature regulation systems.

BACKGROUND ART Temperature control systems that efficiently perform indoor cooling/dehumidifying operation or heating/humidifying operation have been known (for example, Patent Document 1). Patent Document 1 describes a first passage for exhausting indoor air to the outside, a second passage for supplying outside air into the room, a condenser and a heating means arranged in the first passage, and an evaporator arranged in the second passage. a dehumidifying rotor disposed across the first passage and the second passage, a compressor disposed outside the first passage and the second passage, and an expansion valve disposed between the condenser and the evaporator. A temperature control system (desiccant air conditioning system in Patent Document 1) is disclosed. In this temperature control system, the moisture contained in the outside air flowing through the second passage is adsorbed by the dehumidifying rotor and removed, thereby turning the outside air into dry air, which is then cooled by the evaporator and supplied to the room. do. In addition, the air discharged from the room is heated by a condenser and a heating means in the first passage to become exhaust air, and the exhaust air removes moisture adsorbed by the dehumidifying rotor and regenerates the dehumidifying rotor (desorption, drying, etc.). ) A compression air conditioner is composed of a condenser, evaporator, compressor, and expansion valve. The heating means is waste heat from the cooling water of the polymer electrolyte fuel cell. The dehumidifying rotor is filled with an adsorbent such as silica gel or activated carbon, rotates at low speed, and alternately faces the first passage and the second passage.

Japanese Patent Application Publication No. 2003-279069

When the desiccant air conditioning system disclosed in Patent Document 1 is installed in a vehicle such as a fuel cell vehicle, the condenser needs to be placed at the front of the vehicle, which may increase the size and pressure loss. In addition, the desiccant air conditioning system disclosed in Patent Document 1 does not have a means for humidifying the outside air, so when the outside air has low relative humidity, the dry air that has been heated by adsorbing moisture on the dehumidifying rotor is used. There was a possibility that it could not be generated. Furthermore, waste heat from the cooling water of the polymer electrolyte fuel cell is used as a means to heat the indoor air to regenerate the adsorbent material in the dehumidifying rotor, and a condenser made of a metal wall or the like is used. Heat transfer performance was low, and there was a risk that the adsorbent could not be efficiently regenerated.

The present invention has been made in view of the above-mentioned problems, and its purpose is to be able to be mounted on a vehicle, and to humidify the outside air and efficiently apply it to an adsorbent even when the relative humidity of the outside air is low. The object of the present invention is to provide a temperature control system capable of adsorbing moisture.

One embodiment of the temperature control system according to the present invention is a water storage system that stores water generated by power generation by a fuel cell and moistens outside air introduced from the outside with the generated water to generate moisture-containing air. a blower that introduces the outside air from the outside and sends it into the water storage section; and a blower that adsorbs moisture contained in the moisture-containing air by supplying the moisture-containing air discharged from the water storage section. It is equipped with an adsorption section that generates heated dry air.

According to this embodiment, the outside air is moistened by effectively utilizing the water generated by the chemical reaction generated by the power generation of the fuel cell, so even when outside air with low relative humidity is introduced, a special device etc. is required. It is possible to generate highly humid water-containing air and supply it to the adsorption section without any problems. Thereby, by adsorbing the moisture contained in the moisture-containing air in the adsorption section, heat of adsorption can be generated and heated dry air can be generated. Moreover, compared to the conventional case of exchanging heat between cooling water waste heat (sensible heat of hot water) and air, the adsorption unit is able to exchange water with moisture-containing air moistened by water produced by fuel cell power generation. Heat transfer performance is good because heated dry air is generated by the adsorption heat of direct contact. Therefore, it was possible to provide a temperature control system that can be mounted on a vehicle and that can humidify the outside air and cause the adsorbent to efficiently adsorb moisture even when the relative humidity of the outside air is low.

Another embodiment of the temperature control system according to the present invention is a first dryer connected to the adsorption section and a downstream side of a compressor that compresses the outside air introduced from the outside for power generation of the fuel cell. The drying device further includes a flow path, and the high-temperature compressed air compressed by the compressor is passed through the first drying flow path and supplied to the adsorption section, thereby desorbing the moisture adsorbed on the adsorption section.

According to this embodiment, moisture in the adsorption section is desorbed (evaporated) by high-temperature compressed air downstream of a compressor that compresses outside air introduced from the outside for power generation by the fuel cell, so a special device or the like is used. It is possible to regenerate (dry) the adsorption part without any drying.

Another embodiment of the temperature control system according to the present invention is a second dryer connected to the adsorption section and an upstream side of a compressor that compresses the outside air introduced from the outside for power generation by the fuel cell. The drying method further includes a flow path, and by operating the compressor, air in the adsorption section is sucked and passed through the second drying flow path, thereby desorbing moisture adsorbed in the adsorption section.

According to this embodiment, the second drying flow path is arranged upstream of the compressor that compresses outside air introduced from the outside for power generation by the fuel cell, and the adsorption section is heated by the negative pressure of the outside air sucked into the compressor. Since moisture is desorbed (evaporated), the adsorption section can be regenerated (dryed) without using any special equipment.

Another embodiment of the temperature control system according to the present invention is that the adsorption unit is connected to the downstream side of an intercooler that cools outside air introduced from the outside and compressed by a compressor for power generation by the fuel cell. and a suction member disposed downstream of the intercooler and at a branch position of the third drying flow path, the compressor is operated to create a low pressure in the suction member. By sucking the air in the adsorption part by the pressure of outside air and letting it flow through the third drying channel, the moisture adsorbed in the adsorption part is desorbed.

According to this embodiment, the third drying flow path and the suction member are arranged downstream of the intercooler that cools the outside air introduced from the outside and compressed by the compressor for power generation by the fuel cell, Since the moisture in the adsorption section is evaporated using negative pressure, the adsorption section can be regenerated (dryed) without using any special equipment.

Another embodiment of the temperature control system according to the present invention is a first flow path connected to the blower and the water storage section, through which the outside air flows, and connected to the water storage section and the adsorption section; a second flow path through which moisture-containing air flows; a third flow path that branches from the first flow path and is connected to the second flow path without passing through the water storage section; and a third flow path in the first flow path. A fourth flow path is arranged at a branch position between the first flow path and the fourth flow path, and is connected to the water storage part by branching downstream from the branch position with the flow path, and is arranged at the branch position of the first flow path and the fourth flow path, and It further includes a first valve that switches between the first flow path and the fourth flow path, and a second valve that opens and closes the third flow path, and the first flow path is configured such that the generated water in the water storage section is The fourth flow path is connected to an upper position where the generated water is not stored, and the fourth flow path is connected to a lower position of the water storage section where the generated water is stored, and the outside air is controlled based on the moisture content of the outside air. The liquid flows through any one of the first flow path, the third flow path, and the fourth flow path.

According to the present embodiment, the flow path is selected based on the moisture content of the outside air, such as using the first flow path when the outside air has relatively high relative humidity and the fourth flow path when the outside air has relatively low humidity. Accordingly, the amount of moisture contained in the moisture-containing air supplied to the adsorption section can be controlled. Moreover, when moisture is adsorbed in the adsorption part, the moisture adsorbed in the adsorption part can be desorbed by introducing outside air with low relative humidity into the adsorption part through the third flow path.

Another embodiment of the temperature control system according to the present invention provides a humidification channel connected to the water storage section and the adsorption section, through which the moisture-containing air flows, and a humidification channel connected to the adsorption section, and connected to the heating section. The apparatus further includes a heating drying channel through which dry air flows, and a backflow prevention valve is provided in at least one of the humidifying channel or the heating drying channel.

According to this embodiment, it is possible to prevent the air in the adsorption section from flowing back into the wet channel and the air in the drying channel from flowing back into the adsorption section.

FIG. 1 is a circuit configuration diagram of a temperature adjustment system according to a first embodiment. FIG. 3 is a circuit configuration diagram of a temperature adjustment system according to a second embodiment. It is a circuit block diagram of the temperature adjustment system concerning a third embodiment.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of a temperature control system according to the present invention will be described in detail using the drawings. Note that the embodiments described below are illustrative for explaining the present invention, and the present invention is not limited only to these embodiments. Therefore, the present invention can be implemented in various forms without departing from the gist thereof.

[First embodiment: Configuration of fuel cell system]
As shown in FIG. 1, a temperature control system B according to the first embodiment is connected to a fuel cell system A. The fuel cell system A includes an FC stack 1 (an example of a fuel cell), a hydrogen circuit 10 that supplies anode gas (hydrogen gas) to the FC stack 1, a cooling circuit 20 that supplies cooling water to the FC stack 1, and an FC stack 1 (an example of a fuel cell). The stack 1 is configured to include an air circuit 30 that supplies air to the stack 1.

The hydrogen circuit 10 includes a hydrogen cylinder 11, an anode gas supply path 12, an anode valve 12a, an anode off-gas discharge path 13, a gas-liquid separator 14, a drainage valve 14a, an anode off-gas return path 15, a pump 16, and a drainage path 17. ing. The hydrogen cylinder 11 stores hydrogen gas (anode gas, fuel gas). The anode gas supply path 12 is connected to the hydrogen cylinder 11 and allows hydrogen gas to be supplied to the FC stack 1 to flow therethrough. The anode valve 12 a is disposed midway through the anode gas supply path 12 and adjusts the flow rate of hydrogen gas flowing through the anode gas supply path 12 . The anode off-gas discharge path 13 allows the anode off-gas discharged from the FC stack 1 after being generated by the FC stack 1 to flow therethrough. The gas-liquid separator 14 is connected to the anode off-gas discharge path 13 and separates water from the anode off-gas that is humidified and contains moisture due to water produced by a chemical reaction during power generation (an example of produced water). The drain valve 14a switches between storage and discharge of water separated from the anode off-gas. The anode off-gas return path 15 connects the gas-liquid separator 14 and the anode gas supply path 12 , and causes the anode gas from which water has been separated by the gas-liquid separator 14 to be returned to the anode gas supply path 12 . The pump 16 is disposed in the middle of the anode off-gas return path 15 and pumps the anode gas from which water has been separated. The drainage channel 17 is connected to the downstream side of the drainage valve 14a, and is connected to a cathode off-gas discharge channel 36, which will be described later. The drainage channel 17 allows water separated by the gas-liquid separator 14 to flow therethrough to humidify the cathode offgas flowing through the cathode offgas discharge channel 36 .

The cooling circuit 20 includes a cooling water supply path 21, a branch supply path 21a, a cooling water discharge path 22, a branch discharge path 22a, a radiator 23, a radiator fan 24, and a pump 25. The cooling water supply path 21, the cooling water discharge path 22, and the radiator 23 are connected, and the cooling water circulates. The radiator 23 and the radiator fan 24 cool the cooling water. The cooling water supply path 21 circulates cooling water cooled by the radiator 23 and supplies it to the FC stack 1 . The cooling water discharge path 22 allows the cooling water warmed by the FC stack 1 to flow to the radiator 23 . The pump 25 is arranged in the middle of the cooling water supply path 21 and pumps the cooling water. The branch supply path 21a and the branch discharge path 22a are branched from the cooling water supply path 21 and the cooling water discharge path 22, respectively, and cool an intercooler 34, which will be described later, with the cooling water. An on-off valve (not shown) is disposed in at least one of the branch supply path 21a and the cooling water discharge path 22 as necessary.

The air circuit 30 includes a cathode gas supply path 31, a cathode valve 31a, an air cleaner 32, an air compressor 33 (an example of a compressor), an intercooler 34, a humidifier 35, a cathode off-gas discharge path 36, a bypass path 37, and a bypass valve 37a. We are prepared. The cathode gas supply path 31 allows air taken in from the outside to flow to the FC stack 1 . The cathode valve 31a is arranged in the middle of the cathode gas supply path 31, and adjusts the flow rate of air flowing through the cathode gas supply path 31. The air cleaner 32 is disposed in the middle of the cathode gas supply path 31 and removes dust and the like contained in air taken in from the outside. The air compressor 33 is disposed in the middle of the cathode gas supply path 31 and downstream of the air cleaner 32, and compresses air to generate high-temperature compressed air. The intercooler 34 is disposed in the middle of the cathode gas supply path 31 and downstream of the air compressor 33, and lowers the temperature of the high-temperature compressed air. Although the air whose temperature has been lowered by the intercooler 34 is lower than the high temperature compressed air generated by the air compressor 33, it is still higher than room temperature. Hereinafter, the high-temperature compressed air generated by the air compressor 33 and the air whose temperature has been lowered than the high-temperature compressed air by the intercooler 34 but whose temperature is still higher than room temperature will be collectively referred to as high-temperature compressed air. When the temperature of the intercooler 34 becomes high, the cooling efficiency decreases, so the intercooler 34 is cooled by the cooling water supplied from the aforementioned branch supply path 21a. The cooling water warmed by the intercooler 34 is returned to the radiator 23 through the branch discharge path 22a. The humidifier 35 is disposed in the middle of the cathode gas supply path 31 and downstream of the intercooler 34, and humidifies the cathode gas with the humidified cathode off gas flowing through the cathode off gas discharge path 36. The cathode gas humidified by the humidifier 35 flows through the cathode gas supply path 31 and is supplied to the FC stack 1 . The cathode off-gas discharge path 36 allows cathode off-gas discharged from the FC stack 1 to flow after being generated by the FC stack 1 . The cathode off gas flowing through the cathode off gas discharge path 36 is moistened and humidified by water generated by a chemical reaction during power generation (an example of generated water), and is further humidified by the water supplied from the drain path 17 to be discharged into the humidifier. Enter 35. The cathode off gas humidifies the cathode gas within the humidifier 35. Although this reduces the amount of water contained in the cathode offgas, it still contains water. The cathode off gas discharged from the humidifier 35 passes through the cathode off gas discharge path 36 and is discharged to the outside.

The bypass path 37 connects the cathode gas supply path 31 and the cathode off-gas discharge path 36, and a bypass valve 37a is disposed in the middle. Normally, the bypass valve 37a is closed, but when it suddenly becomes necessary to reduce the output of the FC stack 1, the bypass valve 37a is opened and the air flowing through the cathode gas supply path 31 is circulated to the cathode off-gas discharge path 36. and discharge it to the outside.

A fuel cell system A shown in FIG. 1 is installed in an FCV (fuel cell vehicle). In this fuel cell system A, the FC stack 1 has a structure in which a plurality of cells are stacked. Hydrogen gas stored in a hydrogen cylinder 11 is supplied to the FC stack 1 through an anode gas supply path 12, and air (oxidizer) compressed by an air compressor 33 is supplied through a cathode gas supply path 31. By supplying the power, the FC stack 1 generates power. When power generation is performed, the amount of power generation is determined by controlling the amount of hydrogen gas supplied by the pump 16 and the anode valve 12a, and controlling the amount of air supplied by the air compressor 33 and the cathode valve 31a.

[Temperature control system configuration]
The temperature control system B according to the present embodiment includes a blower 51, a first flow path 52, a first valve 52a, a second flow path 53 (an example of a wet flow path), a third valve 53a (an example of a backflow prevention valve), a water storage section 54, third flow path 55, second valve 55a, fourth flow path 56, adsorption section 57, fifth flow path 58 (an example of a heating drying flow path), first drying flow path 61, and produced water supply 64. The blower 51 causes outside air introduced from the outside to flow through the first flow path 52 . The first flow path 52 is connected to the blower 51 and the water storage section 54, and supplies outside air to the water storage section 54 to moisten it.

The water storage section 54 is a place for storing water for humidification, and the water flowing through the drainage channel 17 and the cathode off gas discharge channel 36 of the fuel cell system A described above is supplied to the water storage section 54 . A part of the cathode off-gas flowing through the cathode off-gas exhaust path 36 flows through a generated water supply path 64 branched from the cathode off-gas exhaust path 36 connected to the downstream side of the humidifier 35 and is supplied to the water storage section 54 . That is, the produced water supply path 64 is connected to the cathode off-gas discharge path 36 and the water storage section 54. A produced water supply valve 64a is disposed in the middle of the produced water supply channel 64, and opens and closes the produced water supply channel 64. Thereby, supply and cutoff of cathode off gas and water to the water storage section 54 are switched. The water storage section 54 stores water flowing through the cathode off-gas discharge path 36 and moisture separated from the cathode off-gas.

A fourth flow path 56 branches off in the middle of the first flow path 52 , and the fourth flow path 56 is also connected to the water storage section 54 . The first flow path 52 is connected to a position higher than the water surface of the water storage section 54 where water is stored, and the fourth flow path 56 is connected to a position higher than the water surface of the water storage section 54 where water is stored. Also connected in a lower position. As a result, the outside air that flows through the fourth flow path 56 and is supplied to the water storage section 54 becomes more humid than the outside air that flows through the first flow path 52 and is supplied to the water storage section 54 because it flows through water. Therefore, the water content in the water storage section 54 increases. The first flow path 52 and the fourth flow path 56 are switched by a first valve 52a, which is a three-way valve arranged at a branch position.

The second flow path 53 is connected to the water storage section 54 and the adsorption section 57 at a position higher than the height of the water storage section 54 at which water is stored. Moisture-containing air, which is outside air moistened in the water storage section 54 , flows through the second flow path 53 and is supplied to the adsorption section 57 .

The temperature control system B has a third flow path 55 that directly connects a first flow path 52 and a second flow path 53 on the outside air side with respect to the water storage section 54 . That is, the third flow path 55 branches off upstream from the branch position of the fourth flow path 56 in the first flow path 52 and is connected to the second flow path 53 without passing through the water storage section 54 . A second valve 55a is arranged in the middle of the third flow path 55, and opens and closes the third flow path 55. By appropriately switching the first valve 52a and the second valve 55a, the outside air introduced from the outside flows through any one of the first flow path 52, the third flow path 55, and the fourth flow path 56. The flow path through which the air flows is determined based on the moisture content of the outside air introduced from the outside. The moisture content of the outside air is measured by a humidity sensor (not shown). The outside air with a high moisture content flows through the third flow path 55 and is supplied to the second flow path 53 without passing through the water storage section 54 . Furthermore, the outside air with a low moisture content is supplied to the water storage section 54 through the fourth flow path 56 that can moisten the outside air most, and then is supplied to the second flow path 53 . The outside air having a moisture content intermediate between the above two types of outside air flows through the first flow path 52 and is supplied to the water storage section 54, and then is supplied to the second flow path 53. In this way, by selecting the flow path based on the moisture content of the outside air, the amount of moisture contained in the moisture-containing air supplied to the adsorption section 57 can be controlled.

The adsorption section 57 includes an adsorbent such as zeolite or activated carbon. When moisture-containing air is supplied from the second channel 53 in a state where no moisture is adsorbed to the adsorption section 57, the adsorption section 57 adsorbs the moisture in the moisture-containing air and reduces the humidity of the moisture-containing air. The temperature of the moisture-containing air is raised by the heat of adsorption (corresponding to the heat of condensation) generated when moisture is adsorbed. As a result, the moisture-containing air supplied to the adsorption section 57 is heated and dehumidified in the adsorption section 57, and is then discharged as heated dry air. The heated dry air generated in the adsorption section 57 flows through the fifth channel 58 connected to the adsorption section 57 and is supplied to the temperature-controlled device 70 . An example of the temperature-controlled device 70 is an air conditioner, and the heated dry air is used to prevent fogging of windows and heat the interior of a car via the air conditioner. Moreover, when the outside temperature is low, it is also possible to utilize the warm air of the FC stack 1 and a secondary battery (not shown) (such as a lithium ion battery) used together. Thereby, the FC stack 1 and the secondary battery can be quickly warmed up to an appropriate temperature.

If the adsorption section 57 continues to generate heated dry air, the amount of moisture adsorbed by the adsorption section 57 will increase, and the adsorption efficiency will decrease. Therefore, it is necessary to periodically desorb (evaporate) the moisture adsorbed by the adsorption part 57 and regenerate (dry) the adsorption part 57.

In this embodiment, the adsorption unit 57 is regenerated by supplying air with a lower relative humidity than moisture-containing air to the adsorption unit 57. Specifically, in the cathode gas supply path 31 of the air circuit 30 of the fuel cell system A, the first drying flow path 61 is branched from between the intercooler 34 and the humidifier 35 downstream of the air compressor 33, and One drying channel 61 is connected to the adsorption section 57. Thereby, high-temperature compressed air that has been cooled by the intercooler 34 but is still at a high temperature can be made to flow through the first drying channel 61 and supplied to the adsorption section 57 . When high-temperature compressed air is supplied to the adsorption section 57 on which moisture has been adsorbed, the adsorption section 57 desorbs the adsorbed moisture and is regenerated. The desorbed moisture humidifies the high-temperature compressed air, and the temperature of the high-temperature compressed air is lowered by the heat of desorption (corresponding to the heat of evaporation) absorbed from the high-temperature compressed air when moisture is desorbed. As a result, the high-temperature compressed air supplied to the adsorption section 57 is cooled and humidified in the adsorption section 57, becomes low-temperature moist air, and is discharged to the outside from the sixth flow path 59. Thereby, the adsorption unit 57 can be regenerated and heated dry air can be efficiently generated from moisture-containing air again. Note that an on-off valve is provided in the sixth flow path 59 so that the moisture-containing air supplied into the adsorption section 57 and the heated dry air generated within the adsorption section 57 do not flow through the sixth flow path 59. A sixth valve 59a is arranged. In addition, if there is no problem with the heat resistance and pressure resistance of the suction part 57, the first drying channel 61, the first drying valve 61a, etc. to be described later, the first drying channel 61 is inserted between the air compressor 33 and the intercooler 34. It may be configured to branch.

A first drying valve 61a is disposed in the middle of the first drying channel 61, and is configured to be closed except when regenerating the adsorption section 57 so that high-temperature compressed air is not supplied to the adsorption section 57. Also, in order to prevent the high-temperature compressed air and low-temperature humid air in the adsorption section 57 from flowing through the second flow path 53 (reverse flow), the confluence point of the second flow path 53 and the third flow path 55 in the second flow path 53 is A third valve 53a, which is a check valve, is arranged closer to the suction portion 57 than the third valve 53a. Further, a fourth valve 58a, which is an on-off valve, is arranged in the fifth flow path 58 so that the high-temperature compressed air supplied into the adsorption section 57 does not flow through the fifth flow path 58.

As described above, in order to regenerate the adsorption section 57, air having a lower relative humidity than moisture-containing air may be supplied to the adsorption section 57. Therefore, instead of supplying high-temperature air from the first drying channel 61, for example, outside air is supplied to the adsorption unit via the third channel 55 and the second channel 53 during the daytime when the relative humidity is low. 57. As a result, outside air having a lower relative humidity than moisture-containing air can be supplied to the adsorption section 57, so that the moisture adsorbed by the adsorption section 57 can be desorbed and the adsorption section 57 can be regenerated. At this time, low-temperature humid air that is lower in temperature and humidified than the outside air is generated in the adsorption section 57, so by circulating this low-temperature humid air through the fifth flow path 58, the low-temperature humid air is supplied to the temperature-controlled equipment 70. can be supplied. Examples of the temperature-controlled device 70 include cooling a secondary battery (not shown) used together with the FC stack 1 to an appropriate temperature, indirectly cooling the passenger compartment via a heat exchanger, and cooling the radiator 23. It is conceivable that it could be used to improve cooling performance by spraying.

In the temperature control system B according to the present embodiment, the outside air is moistened using water generated by a chemical reaction caused by the power generation of the FC stack 1, so even when outside air with low relative humidity is introduced, for example, a special Highly humid water-containing air can be generated and supplied to the adsorption section 57 without using any equipment or the like. Thereby, the adsorption section 57 can adsorb moisture contained in the moisture-containing air to generate heated dry air.

In addition, since the moisture in the adsorption section 57 is desorbed by high-temperature compressed air downstream of the air compressor 33 that compresses the outside air introduced from the outside for power generation in the FC stack 1, no special equipment is required. The adsorption section 57 can be regenerated.

In the temperature control system B according to the present embodiment, latent heat is used to adsorb moisture to the adsorption section 57 or to desorb moisture from the adsorption section 57. Therefore, compared to the technology described in Patent Document 1, which uses waste heat of cooling water (sensible heat of hot water) to adsorb and desorb the dehumidifying rotor, the heat transfer performance is much better. Therefore, moisture can be efficiently desorbed in the adsorption section 57.

[Second embodiment: Configuration of temperature control system]
Next, the temperature control system B according to the second embodiment will be described in detail using the drawings. The configuration of the fuel cell system A to which the temperature control system B according to the present embodiment is connected is the same as that of the first embodiment, so detailed explanation will be omitted. Furthermore, the configuration of generating heated dry air and low-temperature humid air from outside air using the temperature control system B and supplying them to the temperature-controlled device 70 is also the same as that of the first embodiment, so a detailed explanation will be omitted. In the temperature control system B of this embodiment, the configuration for regenerating the adsorption section 57 is different from that of the first embodiment.

In this embodiment, as shown in FIG. 2, in the cathode gas supply path 31 of the air circuit 30 of the fuel cell system A, a second drying flow path 62 is branched from between the air cleaner 32 and the air compressor 33, The second drying channel 62 is connected to the adsorption section 57. When the air compressor 33 is operated in this state, the air in the suction section 57 is sucked into the air compressor 33 by negative pressure. At this time, the moisture adsorbed by the adsorption section 57 is desorbed and sucked together with the air. Thereby, the adsorption section 57 is regenerated, and heated dry air can be efficiently generated from moisture-containing air again.

A second drying valve 62a is disposed in the middle of the second drying channel 62, and is configured to be closed except when regenerating the adsorption section 57 so that the air inside the adsorption section 57 is not sucked. Furthermore, a filter 62b that prevents foreign matter from entering the air compressor 33 is arranged between the second drying valve 62a and the adsorption section 57. Furthermore, in order to prevent the moisture-containing air in the second flow path 53 from being sucked when sucking the air in the adsorption section 57, the second flow path 53 and the third flow path in the second flow path 53 are A third valve 53b, which is an on-off valve, is arranged closer to the adsorption section 57 than the junction with the third valve 55. In addition, in order to prevent the heated dry air in the fifth flow path 58 from being sucked toward the adsorption section 57 (flowing backward), a fifth valve 58b, which is a check valve, is installed in the fifth flow path 58. (an example of a check valve) is installed.

In this way, the second drying flow path 62 is arranged upstream of the air compressor 33 that compresses the outside air introduced from the outside for power generation of the FC stack 1, and the negative pressure of the outside air sucked into the air compressor 33 is reduced. Since the moisture in the adsorption section 57 is desorbed by this method, the adsorption section 57 can be regenerated without using any special equipment or the like.

[Third embodiment: Configuration of temperature control system]
Next, a temperature control system B according to a third embodiment will be described in detail using the drawings. The configuration of the fuel cell system A to which the temperature control system B according to the present embodiment is connected is the same as that of the first embodiment, so detailed explanation will be omitted. Furthermore, the configuration of generating heated dry air and low-temperature humid air from outside air using the temperature control system B and supplying them to the temperature-controlled device 70 is also the same as that of the first embodiment, so a detailed explanation will be omitted. In the temperature control system B of this embodiment, the configuration for regenerating the adsorption section 57 is different from the first embodiment and the second embodiment.

In this embodiment, as shown in FIG. 3, in the cathode gas supply path 31 of the air circuit 30 of the fuel cell system A, a third The drying channel 63 is branched, and the third drying channel 63 is connected to the adsorption section 57. Further, a suction member 38 such as a venturi or an ejector is arranged at a branch position of the third drying channel 63 in the cathode gas supply channel 31 . When the air circuit 30 is operated in this state, air taken in from the outside flows through the cathode gas supply path 31. This air becomes high speed within the suction member 38, and therefore has a low pressure on the upstream side thereof. The air in the suction section 57 is sucked by this low-pressure air, and the moisture adsorbed by the suction section 57 is desorbed and sucked together with the air. Thereby, the adsorption section 57 is regenerated, and heated dry air can be efficiently generated from moisture-containing air again.

A third drying valve 63a is disposed in the middle of the third drying channel 63, and is configured to be closed except when regenerating the adsorption section 57 so that the air inside the adsorption section 57 is not sucked. Further, a filter 63b is arranged between the third drying valve 63a and the suction section 57 to prevent foreign matter from entering the suction member 38. Similarly to the second embodiment, in order to prevent moisture-containing air in the second flow path 53 from being sucked when sucking the air in the adsorption section 57, the second flow path in the second flow path 53 is A third valve 53b, which is an on-off valve, is arranged closer to the adsorption section 57 than the confluence of the third flow path 53 and the third flow path 55. In addition, in order to prevent the heated dry air in the fifth flow path 58 from being sucked toward the adsorption section 57 (flowing backward), a fifth valve 58b, which is a check valve, is installed in the fifth flow path 58. is located.

[Other embodiments]
(1) In the above embodiment, the water flowing through the drainage channel 17 is configured to join the cathode off-gas discharge channel 36, but the drainage channel 17 may also be configured to be directly connected to the produced water supply channel 64. good.

(2) In the first embodiment, the first drying flow path 61 was configured to be connected between the intercooler 34 and the humidifier 35, but it was connected between the air compressor 33 and the intercooler 34. It may also be a configuration.

INDUSTRIAL APPLICATION This invention can be utilized for a temperature regulation system.

1: FC stack (fuel cell)
33: Air compressor (compressor)
34: Intercooler 38: Suction member 51: Blower 52: First flow path 52a: First valve 53: Second flow path (wet flow path)
53a: Third valve (backflow prevention valve)
54: Water storage section 55: Third channel 55a: Second valve 56: Fourth channel 57: Adsorption section 58: Fifth channel (heated drying channel)
58b: Fifth valve (backflow prevention valve)
61: First drying channel 62: Second drying channel 63: Third drying channel B: Temperature control system

Claims (6)

a water storage unit that stores generated water generated by power generation by the fuel cell, and moistens outside air introduced from the outside with the generated water to generate moisture-containing air;
a blower that introduces the outside air from the outside and sends it into the water storage section;
A temperature control system comprising: an adsorption section that adsorbs moisture contained in the moisture-containing air and generates heated dry air by being supplied with the moisture-containing air discharged from the water storage section. further comprising a first drying flow path connected to the adsorption section and a downstream side of a compressor that compresses the outside air introduced from the outside for power generation by the fuel cell,
The temperature control system according to claim 1, wherein the high temperature compressed air compressed by the compressor is passed through the first drying flow path and supplied to the adsorption section, thereby desorbing the moisture adsorbed in the adsorption section. further comprising a second drying flow path connected to the adsorption section and an upstream side of a compressor that compresses the outside air introduced from the outside for power generation by the fuel cell,
The temperature control system according to claim 1, wherein the moisture adsorbed in the adsorption section is desorbed by operating the compressor to suck air in the adsorption section and flow it through the second drying channel. a third drying flow path connected to the adsorption section and a downstream side of an intercooler that cools outside air introduced from the outside and compressed by a compressor for power generation by the fuel cell; further comprising a suction member disposed at a branch position of the third drying channel,
The moisture adsorbed in the adsorption part is desorbed by activating the compressor and sucking the air in the adsorption part by the pressure of the outside air that has become low pressure in the suction member and causing it to flow through the third drying channel. The temperature regulation system according to claim 1. a first flow path connected to the blower and the water storage section, through which the outside air flows;
a second flow path connected to the water storage section and the adsorption section, through which the moisture-containing air flows;
a third flow path that branches from the first flow path and is connected to the second flow path without passing through the water storage section;
a fourth flow path that branches downstream from a branch position with the third flow path in the first flow path and is connected to the water storage section;
a first valve disposed at a branching position between the first flow path and the fourth flow path, and switching the flow of the outside air between the first flow path and the fourth flow path;
further comprising a second valve that opens and closes the third flow path,
The first flow path is connected to an upper position of the water storage section where the generated water is not stored,
The fourth flow path is connected to a lower position of the water storage section where the generated water is stored,
The temperature adjustment according to any one of claims 1 to 4, wherein the outside air flows through any one of the first flow path, the third flow path, and the fourth flow path based on the moisture content of the outside air. system. a humid flow path connected to the water storage section and the adsorption section, through which the moisture-containing air flows;
further comprising a heated drying channel connected to the adsorption section and through which the heated drying air flows,
The temperature control system according to claim 1, further comprising a check valve in at least one of the wet channel and the heated dry channel.

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