Filter system

Abstract

The present invention aims to provide a filter system that can continuously prevent an increase in the amount of gas present in the air inside a cabin. [Solution] The filter system according to the present invention can supply heated cabin air to a heat-generating part of the vehicle, pass it through the thickness direction of a filter having gas adsorption properties, and then discharge it outside the vehicle. By using heated air to desorb gases adsorbed on the filter and discharging the desorbed gases outside the vehicle along with the heated air, the gas adsorption performance of the filter can be restored with low energy cost without using a dedicated heater to heat the cabin air.

Description

Technical Field

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[0001] The present invention relates to a filter system that can continuously prevent an increase in the abundance of unnecessary gases contained in the air inside a cabin.

Background Art

[0002] Conventionally, as a filter medium constituting a filter, for example, as disclosed in Japanese Patent Application Laid-Open No. 2019-13888 (Patent Document 1), a filter medium having an adsorption layer containing an ion exchange resin and activated carbon between breathable base material layers is known. A filter provided with such a filter medium is excellent in the adsorption performance of unnecessary gases (hereinafter referred to as gases), such as carbon dioxide, which are desired to be removed from the air.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, when a filter having gas adsorption performance according to the prior art as disclosed in Patent Document 1 (particularly, a filter having gas adsorption performance such as carbon dioxide) is continuously used to prevent an increase in the abundance of gases contained in the air inside a cabin of a vehicle such as an automobile or an airplane, there is a problem that after the gas is adsorbed to the upper limit that the filter can adsorb, the gas adsorption by the filter stops.

[0005] Therefore, it was necessary to find a new technology that can continuously prevent an increase in the abundance of gases contained in the air inside the cabin.

Means for Solving the Problems

[0006] The present invention A mechanism that can heat the supplied air by supplying the air inside the cabin of a vehicle to a heat-generating part provided in the vehicle. A mechanism that allows the heated air to pass through the thickness direction of a filter having gas adsorption properties. A mechanism that can discharge the heated air after it has passed through the filter to the outside of the vehicle. A filter system equipped with [this feature]. That is the case. [Effects of the Invention]

[0007] The filter system according to the present invention can pass cabin air, which has been heated by supplying it to heat-generating parts of a vehicle such as an automobile or airplane (for example, a power source such as a battery, a power unit such as an engine or motor, an air conditioning system, electronic components or circuit boards, etc.), through the thickness direction of a filter having gas adsorption performance before being discharged outside the vehicle.

[0008] A filter system equipped with a filter that has gas adsorption capabilities incorporates this mechanism, allowing the gas adsorbed on the filter to be desorbed by heated air, and the desorbed gas to be discharged outside the vehicle along with the heated air. As a result, the gas adsorption performance of the filter can be restored efficiently and energy-efficiently without the need for a dedicated heater to heat the air inside the cabin.

[0009] Subsequently, by circulating the air inside the cabin within the vehicle and passing it through the filter in the thickness direction, the filter can once again adsorb gases contained in the air inside the cabin.

[0010] Therefore, the filter system according to the present invention can continuously prevent an increase in the amount of gas present in the air inside the cabin. [Brief explanation of the drawing]

[0011] [Figure 1]This is a schematic diagram illustrating the filter system according to the present invention. Figure 1(a) illustrates the circulation of air inside the cabin within the vehicle, while Figure 1(b) illustrates the discharge of heated air introduced into the vehicle to the outside of the vehicle. [Modes for carrying out the invention]

[0012] An example of the application of the filter according to the present invention will be explained using Figure 1, a schematic diagram representing the filter system according to the present invention. Figure 1(a) illustrates the circulation of air inside the cabin within the vehicle, and Figure 1(b) illustrates the discharge of heated air introduced into the vehicle to the outside of the vehicle. The arrows represent the main airflow. In Figure 1(a), the air present inside the cabin is intended to be illustrated in a manner that does not supply heat-generating parts of the vehicle (e.g., power sources such as batteries, power units such as engines and motors, air conditioning systems, electronic components and circuit boards, etc.).

[0013] When a person or animal is present in the cabin (20a) of a vehicle (20), such as a car or aircraft, where internal air circulation is being performed, gases such as carbon dioxide contained in the breath exhaled by the person or animal fill the cabin (20a) over time, and their presence increases. However, in the filter system (100) according to the present invention, which is equipped with a filter (21, hereafter sometimes abbreviated as filter) having gas adsorption performance, internal air circulation can adsorb the gases contained in the air present in the cabin (20a) onto the filter (21), thereby preventing an increase in the amount of gas contained in the air inside the cabin.

[0014] Specifically, as shown in Figure 1(a), air present in the cabin (20a) is drawn in through the air intake of an air conditioner (air conditioner and its air intake not shown) equipped with a fan in the vehicle (20), guided to the filter (21) according to the present invention, and passed through its thickness. This allows the filter (21) to adsorb the gas contained in the air before it passes through it. Then, the air with a reduced amount of the gas after passing through the filter (21) is supplied to the cabin (20a) from the air outlet of the air conditioner (air conditioner and its air outlet not shown). In this way, it is possible to prevent the amount of gas present in the air inside the cabin (20a) from increasing.

[0015] Furthermore, in the filter system (100) according to the present invention, the air present in the cabin (20a) is heated and guided to the filter (21), and by passing it through the thickness direction, gases such as carbon dioxide adsorbed on the filter (21) are desorbed, and the desorbed gases are discharged outside the vehicle (20) along with the heated air. In this way, the gas adsorption performance of the filter (21) can be restored.

[0016] Specifically, as shown in Figure 1(b), air present in the atmosphere is taken in through the outside air intake of the vehicle (20) and introduced into the cabin (20a). Then, the air present in the cabin (20a) is drawn in through the intake of the air conditioner (the air conditioner and its intake are not shown) and supplied to the heat-generating parts (22, for example, power sources such as batteries, power units such as engines and motors, air conditioning systems, electronic components and circuit boards, etc.) of the vehicle (20). In Figure 1(b), the dashed lines illustrate the manner in which air is supplied to the heat-generating parts (22).

[0017] This allows the heat generated by the heat-generating part (22) to be transferred to the air, thereby heating the air. Next, the heated air is guided to the filter (21) according to the present invention and passed through it in the thickness direction, thereby desorbing the gas adsorbed on the filter (21) into the heated air. After that, the gas released along with the heated air is discharged outside the vehicle (20).

[0018] In this way, the filter system (100) according to the present invention can recover the gas adsorption performance of the filter (21) with good energy cost without using a dedicated heater for heating the air in the cabin (20a).

[0019] Thereafter, by circulating the air in the cabin (20a) in the vehicle (20) and passing it through the filter (21) in the thickness direction after the gas adsorption performance has been recovered, the filter (21) can adsorb the gas contained in the air in the cabin again.

[0020] From the above, the filter system according to the present invention can continuously prevent the abundance of the gas contained in the air in the cabin from increasing.

[0021] In the above description, the filter and the filter system according to the present invention are applied to a vehicle, but they are also applicable to a building. That is, by replacing "vehicle" with "building" and "cabin" with "space where people live", it is possible to realize a building that can prevent the abundance of gases such as carbon dioxide contained in the air existing in the space where people and animals live from increasing by the filter according to the present invention. The heat generating parts in a building can be, for example, power sources such as air conditioning equipment and elevator motors, transformer devices, power generation devices, boiler devices, rechargeable batteries, and emergency power supply devices. And in the filter system according to the present invention, since the gas adsorption performance of the filter can be recovered, the function of preventing the abundance of gases such as carbon dioxide from increasing in the building can be maintained.

[0022] As the filter having gas adsorption performance that can be used in the present invention, a known one can be adopted. As the filter, it is preferable to adopt a filter provided with an ion exchange resin capable of adsorbing the gas contained in the gas. The type of the ion exchange resin can be appropriately selected according to the type of the gas to be adsorbed, and an ion exchange resin such as an anion type ion exchange resin or a cation type ion exchange resin can be adopted. As a specific example, when attempting to adsorb carbon dioxide, it is preferable to adopt an anion type ion exchange resin. In particular, since it has excellent carbon dioxide adsorption ability, it is preferable to adopt an anion type ion exchange resin having a primary amine functional group and / or a composite amine functional group.

[0023] The shape of the ion exchange resin can be appropriately selected. For example, it may be spherical (substantially spherical or true spherical), fibrous, needle-shaped, flat plate-shaped, amorphous shape, polyhedral shape, or feather-shaped or tetrapod-shaped particles. However, since it is easy to realize a filter having excellent air permeability, it is preferable to adopt an ion exchange resin having a spherical particle shape. The average particle diameter of the ion exchange resin can be appropriately adjusted.

[0024] Furthermore, it is preferable to adopt a filter provided with activated carbon in addition to the ion exchange resin. The average particle diameter of the activated carbon can be appropriately adjusted. In addition to the ion exchange resin or the ion exchange resin and activated carbon, the filter may contain additives such as a binder, a flame retardant (halogen-based flame retardant, metal hydroxide-based flame retardant, phosphorus-based flame retardant), a fragrance, a pigment, an antiviral agent, an antibacterial agent, an antifungal agent, photocatalyst particles, a surfactant, other carbon particles such as graphite, and inorganic particles. The content and content ratio of the ion exchange resin, activated carbon or additive included in the filter can be appropriately adjusted.

[0025] As a specific example of the filter, a filter in which the above-described ion exchange resin, activated carbon and additive are supported on a breathable substrate can be adopted. The type of the breathable substrate can be appropriately selected, but it is preferable to adopt a cloth (non-woven fabric, woven fabric or knitted fabric) or a breathable film or foam so that the filter is rich in dust collection performance.

[0026] The manner in which the ion exchange resin, activated carbon, and additives are supported on the breathable substrate can be adjusted as appropriate. If the breathable substrate contains an organic resin, the ion exchange resin, activated carbon, and additives can be supported on the breathable substrate by dissolving or melting the organic resin. Alternatively, the ion exchange resin, activated carbon, and additives can be supported on the breathable substrate using an adhesive. [Industrial applicability]

[0027] The filter system of the present invention can continuously prevent an increase in the amount of gas present in the air inside the cabin of a vehicle, such as a car or an aircraft. [Explanation of symbols]

[0028] 100: Filter System 20: Vehicles 20a: Inside the cabin 21: Filters with gas adsorption capabilities 22: Area of ​​fever

Claims

[Claim 1] A mechanism that can heat the supplied air by supplying the air inside the cabin of a vehicle to a heat-generating part of the vehicle. A mechanism that allows the heated air to pass through the thickness direction of a filter having gas adsorption properties. A mechanism that can discharge the heated air after it has passed through the filter to the outside of the vehicle. A filter system equipped with this feature.

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