Air cleaner and carbon dioxide absorption unit

Abstract

To provide an air cleaner capable of improving an air cleaning function while improving carbon dioxide adsorption efficiency, and a carbon dioxide absorption unit.SOLUTION: An air cleaner 100 includes: an absorption unit 20 that absorbs carbon dioxide, the absorption unit 20 disposed on an air current upstream side relative to an air cleaning filter 30; and a casing 10. The casing 10 includes: a ventilation passage 61 for causing air to pass through the absorption unit 20 and the air cleaning filter 30; and a bypass ventilation passage 62 for causing air to pass through the air cleaning filter 30 without causing the air to pass through the absorption unit 20.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to an air purifier and a carbon dioxide absorption unit. [Background technology]

[0002] In recent years, environmental protection activities have been taking place in society. In particular, Efforts to capture carbon dioxide, which is considered to be a renewable energy source, are being carried out by companies and public institutions. do.

[0003] For example, Patent Document 1 discloses a system that includes a carbon dioxide fixing filter, a main filter, and a fan. The air purifier disclosed in the publication is configured as follows: The air purifier purifies the air entering through the air intake by driving the fan. It passes through the carbon dioxide fixation filter, the main filter, and is discharged from the exhaust port. The carbon dioxide fixation filter adsorbs and fixes carbon dioxide from the air passing through it. The filter adsorbs suspended dust particles from the air passing through it. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 7-68164 Summary of the Invention [Problem to be solved by the invention]

[0005] In an air purifier capable of adsorbing carbon dioxide as described in Patent Document 1, It is desired to improve the air purification function while improving the adsorption efficiency of fluorinated carbon.

[0006] This disclosure has been made to solve the above problems, and is directed to the absorption of carbon dioxide. An air purifier capable of improving air purification function while improving absorption efficiency, and a diacid The present invention aims to provide a carbon dioxide absorption unit. [Means for solving the problem]

[0007] In order to achieve the above object, an air purifier according to a first aspect of the present disclosure is disclosed below. The absorbent unit includes a fan, an air purifying filter, and an absorbing material that absorbs carbon dioxide. The air purifying filter is provided with a unit, and the air purifying filter is provided with a unit, and the unit is provided with a unit, an absorption unit disposed upstream of the airflow, the fan, the air cleaning filter, and the and an absorption unit and a housing in which the absorption unit and the air are disposed. A carbon dioxide absorption path for passing air through a cleaning filter and a carbon dioxide absorption path for passing air through the absorption unit. and a bypass air passage that allows air to pass through the air cleaning filter without passing through the air purification filter.

[0008] In addition, the carbon dioxide absorption unit according to the second embodiment of the present disclosure includes a fan and an air purification filter. and a housing in which the air cleaning filter is disposed. The carbon dioxide absorption unit is configured to absorb carbon dioxide. An absorption filter that contains an absorbing member that contains the absorption filter, and a unit case that contains the absorption filter. and a unit case configured to be fixed to the housing, The unit case is fixed to the housing, and the air cleaning filter is attached to the unit case. The absorbing member is disposed upstream of the airflow generated by the driving of the fan. The unit case is configured to include the absorption filter and the air cleaning filter. A carbon dioxide absorption path for passing air through the absorption filter. and a bypass air passage for passing air through the air cleaning filter. Effect of the Invention

[0009] The lower the wind speed passing through the absorbent, the more efficient the absorption of carbon dioxide by the absorbent. On the other hand, the greater the volume of air passing through the air purifying filter, the more purified the air becomes. According to the above configuration, the amount of air passing through the bypass ventilation path is increased, and the air purification function is improved. As a result, the amount of air supplied to the air cleaning filter can be increased. By passing the air through both the air filter and the carbon dioxide absorption process, which has a large pressure loss, The duct supplies air to the absorbing member, reducing the wind speed passing through the absorbing member. As a result, the carbon dioxide adsorption efficiency is improved while the air purification function is improved. It is possible. [Brief description of the drawings]

[0010] [Figure 1] FIG. 1 is a front view showing the configuration of an air purifier 100 in the first embodiment. [Diagram 2] FIG. 2 is a cross-sectional view showing the configuration of the air purifier 100 in the first embodiment. [Diagram 3] FIG. 3 is a cross-sectional view that illustrates a schematic configuration of the absorption unit 20. As shown in FIG. [Figure 4] FIG. 4 is a diagram for explaining the ventilation path 61 and the bypass ventilation path 62. As shown in FIG. [Diagram 5] FIG. 5 is a diagram showing an example of airflows A1 and A2 as viewed from the front of the air purifier 100 according to the first embodiment. [Figure 6] FIG. 6 is a diagram showing an example of airflows A1 and A2 seen from the side of the air purifier 100 according to the first embodiment. [Figure 7] FIG. 7 is a diagram for explaining the configuration of first opening 13a and second opening 13b. [Figure 8] FIG. 8 is a top view of the air purifier 100 according to the first embodiment. [Figure 9] FIG. 9 is a block diagram of an air purifier 100 according to the first embodiment. [Figure 10] FIG. 10 is a front view showing the configuration of an air purifier 200 according to the second embodiment. [Figure 11] FIG. 11 is a side view showing the configuration of an air purifier 200 according to the second embodiment. [Figure 12] FIG. 12 is an exploded view showing the configuration of an air purifier 200 according to the second embodiment. [Figure 13] FIG. 13 is a block diagram of an air purifier 300 according to the third embodiment. [Figure 14] FIG. 14 is a diagram showing a state in which an opening / closing member 381 of the third embodiment is closed. [Figure 15] FIG. 15 is a diagram showing a state in which an opening / closing member 381 of the third embodiment is open. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] Hereinafter, embodiments of the present disclosure will be described with reference to the drawings. However, the present invention is not limited to the above, and design changes may be made as appropriate within the scope of the present disclosure. In the following description, the same parts or parts having similar functions are referred to as The same reference numerals are used in common between different drawings, and the repeated explanations are omitted. The configurations described in the embodiments and modifications may be combined or modified as appropriate. In order to facilitate understanding of the description, the configurations of the following drawings are simplified. In some cases, the components are illustrated in a simplified or schematic manner, and some of the components are omitted.

[0012] [First embodiment] (Overall configuration of air purifier 100) FIG. 1 is a front view showing the configuration of an air purifier 100 according to a first embodiment. FIG. 1 is a cross-sectional view showing a configuration of an air purifier 100 in a first embodiment.

[0013] The air purifier 100 according to the first embodiment removes dust particles from the air (purifies the air). ) and removes (absorbs and captures) carbon dioxide from the air. The sensor may be installed indoors or outdoors as a standalone device, or may be integrated with other devices (vehicles, aircraft, ships, etc.) The air purifier 100 may be installed in a vehicle (such as a car, an air conditioner, or a vending machine). When the air purifier 100 is placed in a place where it is not wet, it is preferable that the housing 10 of the air purifier 100 is waterproof. If the housing 10 is not located in a place where it is subject to rain, the housing 10 does not need to be waterproof.

[0014] (Configuration of each part of the air purifier 100) As shown in FIG. 1, the air purifier 100 includes a housing 10. A front surface 11 of the housing 10 is provided with a The maintenance door 12 and the air intake 13 are provided. The maintenance door 12 is hinged 1 It is configured to be opened and closed by rotating by 2a. The front direction of the housing 10 is the Y1 direction, the rear direction is the Y2 direction, and the right direction as seen from the front is the X1 direction. The left direction is the X2 direction, the up direction is the Z1 direction, and the down direction is the Z2 direction. As shown, the housing 10 is formed with a ventilation path 61 and a bypass ventilation path 62 .

[0015] As shown in FIG. 2, the air purifier 100 includes an absorption unit 20 and an air purification filter 30. , a nonwoven fabric filter 40 , and a fan 50 .

[0016] The absorption unit 20 is disposed in the ventilation path 61. The absorption unit 20 is disposed on the rear side of the air purifying filter 30. 3 and is disposed upstream of the airflow generated by the fan 50 .

[0017] FIG. 3 is a cross-sectional view showing a schematic configuration of the absorption unit 20. As shown in FIG. The absorption unit 20 is a filter that absorbs carbon dioxide. The device includes an absorption member 21 that absorbs carbon dioxide, and a case portion 22 that accommodates the absorption member 21. The member 21 is, for example, a hydroxide-based carbon dioxide absorbent. In other words, the absorbing member 21 contains hydroxide that absorbs carbon dioxide by contacting with air. This component removes carbon dioxide from the air by chemically reacting with it. The member that absorbs carbon dioxide through a chemical reaction includes a calcium-based material. The calcium-based material is, for example, calcium hydroxide. In addition to the method using chemical reactions, there is also a method that physically absorbs carbon dioxide molecules without causing a chemical reaction. For example, carbon dioxide molecules are adsorbed into porous materials such as zeolite. In this method, carbon dioxide molecules are physically absorbed into the absorbent material. A process is required to desorb carbon dioxide from the absorbing material and convert the desorbed carbon dioxide into a solid. This increases the number of steps required to convert carbon dioxide into a solid. According to the configuration of this embodiment, a material that absorbs carbon dioxide through a chemical reaction is used, and carbon dioxide is Carbon dioxide can be captured from the solid (powder) state that has been chemically transformed from oxidized carbon. This allows for a larger volume of carbon dioxide to be absorbed compared to the method of physically adsorbing carbon dioxide molecules onto an absorbent material. It is possible to easily reuse the absorbent member 21. For example, sodium hydroxide, magnesium hydroxide, ammonium hydroxide, etc. Alternatively, the absorbing member 21 may contain ammonium nitrate or potassium hydroxide.

[0018] In addition, when calcium hydroxide is used for the absorbing member 21, carbon dioxide is absorbed in the calcium hydroxide. By absorbing calcium carbonate, calcium carbonate can be produced. Sium can be used to generate raw materials for various recycled products. Calcium chloride can absorb carbon dioxide from the air simply by placing it in the air. Therefore, even when the air purifier 100 is not in operation, the carbon dioxide in the air is absorbed by the absorbing portion. The material 21 can absorb the ions.

[0019] The absorbing member 21 contains a dye such as methyl violet, and absorbs the carbon dioxide. The color changes due to the change in pH caused by carbon. For example, the absorbent material 2 1 changes from "white" to "red, purple, or pink" when it absorbs carbon dioxide. In addition, when the absorbing member 21 absorbs carbon dioxide, the color changes from "red or purple" to "white or pink." Colors that change to "colors" may be used, or colors that change to colors other than those listed above may be used. The absorbing member 21 does not necessarily need to contain a dye.

[0020] The absorbing member 21 is formed in a granular shape. As shown in FIG. A plurality of absorbing members 21 are arranged in the case portion 22. Therefore, it is easier to handle than liquid, and when a user replaces the absorption unit 20, The absorbing member 21 is unlikely to adhere to the person who collects it. The case portion 22 has a ventilation hole (not shown) or Alternatively, the case portion 22 is formed in a breathable mesh shape. The absorbing member 21 in the casing 22 is exposed to outside air.

[0021] As shown in FIG. 3, a two-dimensional code 22a is attached to the absorption unit 20. The two-dimensional code 22a is, for example, a QR code (registered trademark). The card 20 may be provided with a one-dimensional code (barcode) instead of the two-dimensional code 22a. Alternatively, an electric circuit capable of storing information, such as an IC chip, may be provided. a can be used as the "two-dimensional code" described in Patent Publication No. 7189644, for example. can be done.

[0022] The air purifying filter 30 is, for example, a filter that captures dust. A HEPA filter can be used as 30. Also, as shown in FIG. The air filter 30 is disposed between the absorption unit 20 and the fan 50. The cleaning filter 30 is disposed downstream of the airflow generated by the fan 50 relative to the absorption unit 20. As a result, a part of the absorbing member 21 is temporarily released from the absorbing unit 20. Even if the air purifier 100 is turned off, the absorbing member 21 is captured by the air purifier filter 30 and is not absorbed by the air purifier 100. In addition, the air cleaning filter 30 can prevent the absorbing member 21 from being discharged into the air. The panel constituting the front surface 11 of the housing 10 is removed, so that the device can be replaced from the front side. It is.

[0023] The nonwoven fabric filter 40 is a bypass filter disposed in the bypass air passage 62. The nonwoven fabric filter 40 is disposed on the rear side of the maintenance door 12 of the housing 10, and serves as an absorbent. The nonwoven fabric filter 40 is disposed adjacent to the unit 20. The nonwoven fabric filter 40 is disposed upstream of the airflow generated by the fan 50. The air filter 14 has higher breathability than the air cleaning filter 30 and prevents foreign matter and dust from entering the housing 10. In addition, the nonwoven fabric filter 40 prevents the air passing through the absorption unit 20 from A filter having an optimum pressure loss is used. 0 is also a filter for adjusting pressure loss (for adjusting air volume and speed).

[0024] FIG. 4 is a diagram for explaining the ventilation path 61 and the bypass ventilation path 62. FIG. 2 is a diagram showing examples of airflows A1 and A2 as viewed from the front of the air purifier 100 according to the first embodiment. FIG. 6 is an example of airflows A1 and A2 seen from the side of the air purifier 100 according to the first embodiment. The fan 50 is driven by the supply of power, as shown in FIG. Air is drawn into the housing 10 through the first opening 13a and the second opening 13b, and exhausted through the exhaust port 14. The air is then exhausted from the fan 5a to the outside of the housing 10, as shown in FIGS. 0 indicates an airflow A1 passing through the ventilation path 61 and an airflow A2 passing through the bypass ventilation path 62. The fan 50 may be, for example, a sirocco fan, or a propeller fan. In the first embodiment, the power consumption of the fan 50 is When the force is converted into carbon dioxide, the converted amount of carbon dioxide is absorbed by the absorption unit 20. A fan 50 is employed that produces less than the amount of carbon dioxide possible.

[0025] As shown in FIG. 4, the ventilation path 61 is formed between the absorption unit 20 and the air cleaning filter 30. This is a ventilation path that absorbs carbon dioxide passing through the air and purifies the air. 61 is connected to the first opening 13a, and is connected to the air cleaning filter 3 in the absorption unit 20. 0 and the fan 50, and is connected to the exhaust port 14a. The ventilation path 62 does not allow air to pass through the absorption unit 20 (bypasses the absorption unit 20), In order to perform only air purification by passing air through the nonwoven fabric filter 40 and the air purification filter 30, The bypass ventilation path 62 is connected to the second opening 13b. The air passes through the woven fabric filter 40, the air cleaning filter 30, and the fan 50, and is discharged to the exhaust port 14a. is a route connected to

[0026] As shown in FIG. 5, when the fan 50 is driven, air is drawn from the outside of the housing 10 through the intake port 13. Air flows into the rear side of the maintenance door 12. As a result, airflow A1 enters the ventilation path 61. And an air flow A2 entering the bypass ventilation path 62 is generated.

[0027] FIG. 7 is a diagram for explaining the configuration of the first opening 13a and the second opening 13b. The air that flows into the rear side of the maintenance door 12 passes through the first opening 13a and the second opening 13b. Here, as shown in FIG. 7, the width W1 of the first opening 13a is The length L1 of the first opening 13a is greater than the width W2 of the second opening 13b. As a result, the opening area S1 of the first opening 13a is equal to the opening area L1 of the second opening 13 The opening area S2 of the second opening 13b is larger than that of the first opening 13a. The first opening 13a and the second opening 13b are arranged adjacent to each other in the right direction when viewed from the front. Therefore, the first airflow amount is adjusted to match the airflow amount of the ventilation path 61 and the bypass ventilation path 62. The opening 13a and the second opening 13b can be designed separately.

[0028] As shown in FIG. 7, when the maintenance door 12 is open, a first opening is provided on the front side. The first opening 13a and the second opening 13b are exposed. The absorption unit 20 can be taken out to the outside (front side) of the housing 10 through the The user can replace the nonwoven fabric 20 through the second opening 13b. The filter 40 can be removed from the housing 10, and the nonwoven fabric filter 40 can be replaced. As shown in FIG. 7, the casing 10 includes an absorption unit 20 at the first opening 1. A stopper 12b may be provided to prevent the sensor 3 from falling off the sensor 3a. is configured to be movable between a position where it holds down the absorption unit 20 and a position where it does not hold down the absorption unit 20.

[0029] As shown in FIG. 4, the air flowing in from the first opening 13a passes through the absorption unit 20. Then, the air flows through the air cleaning filter 30 and the fan 50 in that order. The air passes through the nonwoven fabric filter 40, and is then blown through the air purifying filter 30 and the fan 50. Here, as shown in FIG. 2, at least a part of the ventilation path 61 and the bypass At least a part of the air passage 62 refers to, as viewed in the normal direction of the air cleaning filter 30, It is arranged so as to overlap the air cleaning filter 30. This provides an air passage and a bypass. Compared to when the ventilation path is positioned so that it does not overlap with the air purifying filter (shifted position), In total, the ventilation path 61 and the bypass ventilation path 62 can be shortened. 10 can be made smaller.

[0030] Fig. 8 is a top view of the air purifier 100 according to the first embodiment. The exhaust port 14a is provided on the top surface 14 of the housing 10. As shown in FIG. The exhaust fan 52 exhausts the air blown from the fan 50 to the outside (upward) of the housing 10.

[0031] As shown in FIG. 8, an operation panel 16 is provided on the top surface 14. The fan 50 (the operation of the air purifier 100) is switched from on to off or from off to It includes a button 16a for switching on and a button 16b for changing the set airflow of the fan 50. FIG. 9 is a block diagram of the air purifier 100 according to the first embodiment. The control circuit 70 controls the operation of the operation panel 16 when the button 16a of the operation panel 16 is operated. When the power supply is turned on, the fan 50 is switched from being supplied with power to being not supplied with power, or from being not supplied with power to being supplied with power. In addition, the control circuit 70 switches the state to the state in which the button 16b of the operation panel 16 is operated. When this occurs, the amount of power supplied to the fan 50 is changed.

[0032] Here, the absorption of carbon dioxide by the absorption unit 20 is performed when the wind speed passing through the absorption member 21 is The smaller the value, the higher the efficiency. The larger the value, the greater the amount of purified air, and the better the air purification function. In this case, the amount of air supplied to the air cleaning filter 30 through the bypass ventilation path 62 can be increased. Then, the air passes through both the absorption unit 20 and the air cleaning filter 30. By this, air is supplied to the absorption unit 20 through the ventilation path 61, which has a large pressure loss. Therefore, the wind speed passing through the absorption unit 20 can be reduced. To improve the air purification function while improving the carbon dioxide adsorption efficiency of the purifier 100 In the air purifier 100 of the first embodiment, the air purifying filter 30 is ventilated. The fan 50 for ventilating the absorption unit 20 is shared by the fan 50 for ventilating the absorption unit 20. It is possible.

[0033] [Second embodiment] Next, the configuration of an air purifier 200 according to a second embodiment will be described with reference to Figs. 10 to 12. In the second embodiment, the air purifier 200 includes a detachable absorption unit 220. The same components as those in the first embodiment are designated by the same reference numerals as those in the first embodiment. Detailed explanation will be omitted.

[0034] FIG. 10 is a front view showing the configuration of an air purifier 200 according to the second embodiment. FIG. 12 is a side view showing the configuration of an air purifier 200 according to a second embodiment. 10 is an exploded view showing the configuration of an air purifier 200 according to the embodiment. The machine 200 includes a housing 210 and a number of wheels 290 that movably support the housing 210. As shown in FIG. 12, the air purifier 200 includes an air purifying filter 210 in the housing 210. The air cleaning filter 230 and the fan 250 are provided. It is located downstream of the airflow generated by the

[0035] As shown in FIG. 12, the air purifier 200 does not have an absorption unit 220 attached thereto. In a normal state, the air purifier has only an air purifying function without a function of absorbing carbon dioxide. The air purifier 200 has holes 21 for fixing screws 223 of the absorption unit 20. 2 is formed.

[0036] As shown in FIG. 12, the absorption unit 220 is detachably attached to the housing 210 of the air purifier 200. The absorption unit 220 is attached to the air purifier 200. The air purifier 200 has a function of absorbing carbon dioxide and a function of purifying air. It becomes a purifier.

[0037] As shown in FIG. 10, the absorption unit 220 is an absorbent including an absorption member that absorbs carbon dioxide. A collection filter 221, a case 222, a plurality of screws 223, and a plurality of nonwoven fabric filters 24 The absorption unit 220 is disposed in the front surface 211 of the housing 210 of the air purifier 200. is fixed to the lower part of the

[0038] As shown in FIG. 11, the absorption unit 220 is disposed in front of (upstream of) the fan 250. The case 222 of the absorption unit 220 is provided with an intake port 251 of the air purifier 200. In addition, the air intake 251 of the case 222 shown in FIG. The rear surface 226 of the absorption unit 220 is open. 21 and the nonwoven fabric filter 240 are disposed upstream of the air flow with respect to the air cleaning filter 230. The state will be as follows.

[0039] As shown in FIG. 12, a plurality of screws 223 are arranged in the holes 212, so that the case The protrusion 227 of the base 222 is fixed to the housing 210, and the absorption unit 220 is attached to the air purifier. Fixed at 200.

[0040] As shown in FIG. 12, the absorption filter 221 is disposed on the inside of the front surface 224 of the case 222. The carbon dioxide is sucked from the air flowing in through the intake port 213a (see FIG. 11). The air with the carbon dioxide absorbed is then passed through the fan 250 and the air cleaning filter 230. Then, the air is exhausted from an exhaust port 214a disposed in the upper part of the front surface 211 of the housing 210 ( Air flow A11 in Figure 11) This creates a flow for absorbing carbon dioxide and purifying the air. The air path 261 extends from the air intake 213a through the absorption filter 221, the fan 250, and the air cleaner 214. The route passes through the purification filter 30 and reaches the exhaust port 214a.

[0041] As shown in FIG. 12, the nonwoven fabric filter 240 is perpendicular to the front surface 224 of the case 222. The air intake 213b (see FIG. 11) is disposed on the inside of the four side surfaces 225 (see FIG. 10). ) into the case 222. As a result, the air that has flowed into the case 222 The air does not pass through the absorption filter 221, but passes through the fan 250 and the air cleaning filter 230. The air is exhausted from an exhaust port 214a disposed in the upper part of the front surface 211 of the housing 210 through the exhaust port 214a. (Air flow A12 in FIG. 11). The bypass air passage 262 according to the second embodiment is b, passes through the nonwoven fabric filter 240, the fan 250, and the air cleaning filter 30, and is exhausted. The air inlet 213b is provided on the side surface 225. This makes it possible to prevent the size from increasing in the direction along the front surface 211. Therefore, the absorption unit 220 can be attached even to air purifiers 200 that are smaller than a large size.

[0042] According to the second embodiment, the air is supplied to the air cleaning filter 230 via the bypass air passage 262. The amount of air supplied can be increased. By passing both the air and the filter 230 through the ventilation path 261, the pressure loss is large, Since air is supplied to the absorption filter 221, the wind speed passing through the absorption filter 221 is reduced. As a result, the carbon dioxide adsorption efficiency of the air purifier 200 can be improved. This can improve the air purification function.

[0043] According to the second embodiment, the absorption unit 220 is attached to the air purifier 200. , existing air purifiers that do not have the function of absorbing carbon dioxide, The other configurations and effects of the first embodiment can be changed to the air purifier 200 having the same structure as the first embodiment. The configuration and effect of the form are the same.

[0044] [Third embodiment] Next, the configuration of an air purifier 300 according to a third embodiment will be described with reference to Figs. 13 to 15. In the third embodiment, the opening 313b connected to the bypass air passage 62 is The mouth area is changeable. The same configuration as the first embodiment is also applicable to the first embodiment. The same reference numerals are used and the explanation is omitted.

[0045] FIG. 13 is a block diagram of an air purifier 300 according to the third embodiment. FIG 15 is a diagram showing a state in which the opening and closing member 381 of the embodiment is closed. 13 is a diagram showing a state in which the member 381 is open. As shown in FIG. The air purifier 3 includes a control circuit 370 and an opening / closing drive unit 380. As shown in FIG. 00 includes an opening / closing member 381 for opening / closing an opening 313b connected to a bypass ventilation path 62. include.

[0046] The opening / closing drive unit 380 is, for example, a motor, and the opening / closing member 381 is driven by the motor. The position where the opening area of ​​the opening 313b is small (see FIG. 14) and the position where the opening area of ​​the opening 313b is small (see FIG. 14) The opening area is moved to a position where the opening area is large (see FIG. 15). The opening / closing member 381 slides to close a part of the opening 313b, and the opening 31 However, the opening and closing member 381 is rotated. 313b may be moved (configured as a flap) to open and close the opening 313b.

[0047] The control circuit 370 controls the set airflow of the fan 50 according to the operation input to the operation panel 16. When the first airflow setting is changed to a second airflow setting that is greater than the first airflow setting, The opening / closing drive unit 380 is operated to increase the opening area of ​​the opening 313b. In addition, the control circuit 370 controls the movement of the control panel 16. When the set airflow rate of the fan 50 is changed from the second set airflow rate to the first set airflow rate, The closing drive unit 380 is operated to close the opening 313b so that the opening area of ​​the opening 313b is reduced. Move 81.

[0048] According to the configuration of the third embodiment, even if the air volume of the fan 50 is increased, the bypass ventilation is possible. Since the amount of air flowing through the path 62 can be increased, the amount of air flowing through the absorption unit 20 can be reduced. This can prevent the wind speed from increasing and the efficiency of carbon dioxide absorption from decreasing. The configuration and effects of this embodiment are similar to those of the first embodiment.

[0049] [Variations] The above-described embodiments are merely examples for carrying out the present disclosure. The present invention is not limited to the above-described embodiment, and may be modified without departing from the spirit and scope of the present invention. The embodiment can be modified as appropriate.

[0050] (1) In the above first to third embodiments, different openings are provided for the ventilation path and the bypass ventilation path. However, the present disclosure is not limited to this. A common opening may be provided for the above-mentioned.

[0051] (2) In the first embodiment, the opening area of ​​the second opening is set to be smaller than the opening area of ​​the first opening. However, the present disclosure is not limited to this. It may be set to be equal to or larger than the opening area of ​​the opening.

[0052] (3) In the above first to third embodiments, an example in which a nonwoven fabric filter is provided is shown. However, the present invention is not limited to this. A filter may not be disposed in the bypass ventilation path, and a nonwoven fabric filter may be disposed in the bypass ventilation path. A type of filter other than a filter (eg, a mesh filter) may be arranged.

[0053] (4) In the above second embodiment, the absorption unit and the air purifier are fixed to each other by screws. However, the present disclosure is not limited thereto. For example, the case of the absorption unit may be the case of an air purifier. It may be configured to fit the body, or the case of the absorption unit may be attached to the housing of the air purifier. The molecule may be immobilized by an agent.

[0054] The above-mentioned air purifier and carbon dioxide absorption unit can be explained as follows: can be done.

[0055] The air purifier according to the first configuration includes a fan, an air purifying filter, and a device for absorbing carbon dioxide. an absorption unit in which an absorbing member having an air purifying filter is housed, An absorption unit is disposed upstream of an air flow generated by driving the fan; and a housing in which the air cleaning filter and the absorption unit are disposed, a carbon dioxide absorption path for passing air through the absorption unit and the air cleaning filter; A bypass that does not allow air to pass through the absorption unit and allows air to pass through the air cleaning filter. and a path ventilation path (first configuration).

[0056] The lower the wind speed passing through the absorbent, the more efficient the absorption of carbon dioxide by the absorbent. On the other hand, the greater the volume of air passing through the air purifying filter, the more purified the air becomes. According to the first configuration, the amount of the air passing through the bypass passage is increased, and the air purification function is improved. The amount of air supplied to the air purifying filter can be increased through the absorption. The carbon dioxide absorption, which has a large pressure loss, is passed through both the component and the air purifying filter. The collection path supplies air to the absorbing member, reducing the wind speed passing through the absorbing member. As a result, the carbon dioxide adsorption efficiency is improved while the air purification function is also improved. In addition, a fan for ventilating the air purifying filter and an absorption unit are installed. The fan for ventilating the room can be used in the same way as the fan for ventilating the room.

[0057] In the first configuration, the housing has a first intake opening connected to the carbon dioxide absorption path. and a second intake opening connected to the bypass ventilation path (second configuration). ).

[0058] According to the second configuration, the carbon dioxide absorption path and the bypass ventilation path each have an intake port. Since the bypass ventilation path is provided with a third airflow control circuit, the third airflow control circuit is provided according to the airflow rate of the carbon dioxide absorption path and the bypass ventilation path. One intake opening and a second intake opening can be designed.

[0059] In the second configuration, the opening area of ​​the second intake opening is equal to or larger than the opening area of ​​the first intake opening. It may be configured to be smaller than the product (third configuration).

[0060] According to the third configuration, it is possible to prevent the housing from becoming large in size.

[0061] In the second or third configuration, the air purifier includes a control unit that controls the air volume of the fan; The control device may further include an opening / closing member that changes an opening area of ​​the second air intake opening. The unit changes the air volume of the fan from a first set air volume to a second set air volume that is greater than the first set air volume. When changing to a constant air volume, the opening / closing unit is configured to increase the opening area of ​​the second intake opening. It may be configured to release the material (fourth configuration).

[0062] According to the fourth configuration, even when the air volume of the fan is increased, the air does not flow into the bypass air passage. This increases the airflow rate through the absorption unit, which increases the speed of the air flowing through the absorption unit. It is possible to prevent a decrease in the efficiency of carbon dioxide absorption.

[0063] In any one of the first to fourth configurations, the air purifier has a bypass air passage in the bypass air passage. The device may further include an in-bypass filter disposed therein (fifth configuration).

[0064] According to the fifth configuration, the in-bypass filter is provided in the bypass ventilation path. This allows the pressure loss in the bypass ventilation path to be changed, It is possible to adjust the balance between the air volume in the exhaust passage and the air volume in the carbon dioxide absorption passage.

[0065] In any one of the first to fifth configurations, at least a part of the carbon dioxide absorption path and at least a part of the bypass air passage are each perpendicular to a normal line of the air cleaning filter. The air cleaning filter may be disposed so as to overlap the air cleaning filter when viewed in the same direction (sixth configuration).

[0066] According to the sixth configuration, the carbon dioxide absorption path and the bypass ventilation path are provided with an air purification filter. Compared to when the filter is placed in a position that does not overlap with the filter (shifted position), the carbon dioxide absorption pathway and As a result, the size of the housing can be reduced. .

[0067] In any one of the first to sixth configurations, the housing is in front of the absorption unit. The absorption unit is provided upstream of the airflow and includes a maintenance door for replacing the absorption unit. 7th Configuration).

[0068] According to the seventh configuration, the absorption unit, which needs to be replaced more frequently than the air cleaning filter, can be easily replaced. It can be easily replaced.

[0069] The carbon dioxide absorption unit according to the eighth aspect of the present invention comprises a fan, an air cleaning filter, and A carbon dioxide gas purifier attached to an air purifier, the carbon dioxide gas purifier comprising: a housing in which an air purifying filter is arranged; An absorption unit, the carbon dioxide absorption unit comprising an absorption member for absorbing carbon dioxide and a unit case in which the absorption filter is housed, and a unit case configured to be fixed to the housing, the unit case having a front With the unit case fixed to the housing, the air cleaning filter is The absorbing member is arranged upstream of the airflow generated by the driving of the fan. The unit case is provided with an air passage for passing air through the absorption filter and the air cleaning filter. and a carbon dioxide absorption path that does not allow air to pass through the absorption filter and and a bypass air passage that allows air to pass through the purification filter (eighth configuration).

[0070] If the carbon dioxide absorption unit according to the eighth configuration is attached to an air purifier, The existing air purifier that does not have the function of absorbing oxygen is replaced with an air purifier that has the function of absorbing carbon dioxide. The carbon dioxide absorption unit can be modified to have a bypass vent. The air purifying function is improved while improving the carbon dioxide adsorption efficiency by providing a pathway. It can be raised.

[0071] In an eighth configuration, the unit case has a first surface formed thereon. An intake port connected to the carbon dioxide absorption path and a second surface intersecting the first surface. and an intake port formed in the bypass ventilation path and connected to the bypass ventilation path (ninth configuration).

[0072] According to the ninth configuration, the unit case is prevented from becoming large in size in the direction along the first surface. This allows air purifiers smaller than large to be equipped with a carbon dioxide absorption unit. can be attached. [Explanation of symbols]

[0073] 10: housing, 11: front, 12: maintenance door, 12a: hinge, 12b: stopper, 13: intake port, 13a: first opening, 13b: second opening, 14: top surface, 14a: exhaust port , 16: operation panel, 16a, 16b: buttons, 20: absorption unit, 21: absorption member, 22: Case portion, 22a: Two-dimensional code, 30: Air purifying filter, 40: Nonwoven fabric filter 50: fan; 61: ventilation path; 62: bypass ventilation path; 70: control circuit; 100 : air purifier, 200: air purifier, 210: housing, 211: front, 212: hole, 213 a, 213b: intake port, 214a: exhaust port, 220: absorption unit, 221: absorption filter 222: case, 223: screws, 224: front, 225: side, 226: rear, 22 7: protrusion, 230: air purifying filter, 240: non-woven fabric filter, 250: fan, 2 51: air intake, 261: air passage, 262: bypass air passage, 290: wheels, 300: Air cleaner, 313b: opening, 370: control circuit, 380: opening / closing drive unit, 381: opening / closing Materials

Claims

1. With fans, An air cleaning filter, An absorption unit containing an absorption member for absorbing carbon dioxide, The absorbing unit is arranged upstream of the airflow generated by the driving of the fan with respect to the filter. Knit and a housing in which the fan, the air cleaning filter, and the absorption unit are disposed, 、 The housing includes: A carbon dioxide absorption path for passing air through the absorption unit and the air cleaning filter. and, A ballast that does not pass air through the absorption unit but passes air through the air cleaning filter. and an air purifier.

2. The housing includes a first intake opening connected to the carbon dioxide absorption path and a bypass passage. and a second air intake opening connected to the air path.

3. an opening area of ​​the second intake opening is smaller than an opening area of ​​the first intake opening, Item 3. The air purifier according to item 2.

4. A control unit for controlling an air volume of the fan; An opening / closing member that changes the opening area of ​​the second intake opening, The control unit changes the air volume of the fan from a first set air volume to a volume larger than the first set air volume. When changing to the second set airflow rate, the opening area of ​​the second intake opening is increased. The air purifier according to claim 2 , wherein the opening and closing member is opened.

5. 13. The method of claim 1, further comprising:

5. An air purifier according to any one of claims 1 to 4.

6. At least a portion of the carbon dioxide absorption path and at least a portion of the bypass ventilation path. are overlapped with the air purifying filter when viewed in the normal direction of the air purifying filter. The air purifier according to any one of claims 1 to 4.

7. The housing is disposed upstream of the airflow with respect to the absorption unit, The air cleaner according to any one of claims 1 to 4, further comprising a maintenance door for replacing the air cleaner. Purifier.

8. With fans, An air cleaning filter, A housing in which the air cleaning filter is arranged, and a second filter attached to the air purifier. A carbon dioxide absorption unit comprising: The carbon dioxide absorption unit comprises: an absorption filter containing an absorption member that absorbs carbon dioxide; A unit case in which the absorption filter is housed, the unit case being configured to be fixed to the housing. and a unit case having a housing, The unit case is fixed to the housing, and the air The absorption filter is disposed upstream of the airflow generated by the driving of the fan with respect to the cleaning filter. The member is configured to be disposed thereon, The unit case passes air through the absorption filter and the air cleaning filter. and a carbon dioxide absorption path through which air does not pass through the absorption filter and through the air purification filter. and a bypass ventilation path for passing air through the carbon dioxide absorption unit.

9. The unit case has the carbon dioxide absorber formed on a first surface of the unit case. An intake port connected to the intake path and a bypass port formed on a second surface intersecting the first surface. and an air intake connected to a gas ventilation path.

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