JP2014008498A - Air-conditioning filter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To add an antivirus function without increasing the number of layers of an air-conditioning filter.SOLUTION: Coarse dust included in air which flows into a first layer 10a of an air-conditioning filter 10 is collected in the first layer 10a, and multiplication of germs is suppressed by an antibacterial agent 14 loaded in the first layer 10a. Further, the air which flows out from the first layer 10a and flows into a second layer 10b is deodorized by an adsorption function of active carbon 16 included in the second layer 10b, viruses included in the air which flows out from the second layer 10b and flows into a third layer 10c are detoxicated by an antivirus function of an antibody 17 loaded in the third layer 10c, and further, fine dust is collected in a fourth layer 10d.

Description

  The present invention relates to a multifunction air conditioning filter.

  Conventionally, a multifunction filter for an air purifier (hereinafter referred to as an air conditioning filter) in which a plurality of layers such as a layer having a deodorizing function, a layer having a dust collecting function, and a layer having an antibacterial function are laminated has been disclosed. ing.

Japanese Patent Laid-Open No. 10-85558

  However, considering that the air-conditioning filter described in Patent Document 1 is further attached with an antibody having an antiviral function to further enhance the function, the layer to which the antibody is attached has a decreased activity of the antibody. It is necessary not to be adjacent to the layer containing the functional material. This is because when the antibody is attached to the same layer as the functional material that reduces the activity of the antibody, such as an antibacterial layer, or an adjacent layer, the antibody is inactivated (poisoned), so that the antiviral function is reduced. Because it is lost.

  In addition, since the fine dust collection layer (dust collection filter) is generally a charging filter charged with a non-woven fabric, the charge is released when the dust collection filter is impregnated with antibodies (dipping). As a result, the fine dust collecting function is lost.

  Therefore, there is a problem that the antibody cannot be attached without increasing the number of filter layers.

  The invention disclosed in Patent Document 1 is an invention applied to a domestic air cleaner, and when applied to a vehicle air conditioner, a flame-retardant material is used according to safety standards. There is a need.

  Therefore, in general, a flame retardant is added to the filter material, but if the flame retardant is added to the same layer as the antibody, the antibody will be covered with the flame retardant and will not function. Must be added to another layer. That is, it has been difficult to realize an air conditioning filter having an antiviral function that can be applied to a vehicle without increasing the number of filter layers.

  On the other hand, when the number of filter layers increases, the airflow resistance increases, and the airflow rate of the air conditioning filter decreases, thereby reducing the performance of the air conditioner. Therefore, the increase in the number of filter layers must be suppressed.

  The present invention has been made in view of the above circumstances, can add an antiviral function without increasing the number of layers of the air conditioning filter, and can be applied to a vehicle air conditioner. The purpose is to provide.

  The air conditioning filter according to the present invention is obtained by adding an antiviral function by attaching an antibody having an antiviral function to a conventional air conditioning filter.

  That is, the air-conditioning filter according to claim 1 of the present invention has a coarse dust collecting function that has air permeability in order from the upstream side along the air flow path, and further includes an antibacterial agent. A first layer to which a flame retardant is attached; a second layer that includes activated carbon and has a deodorizing effect; a third layer that holds the second layer; a fourth layer that is charged to collect fine dust; In the air-conditioning filter composed of multiple layers, an antibody having an antiviral function is attached to the third layer.

  According to the air conditioning filter configured as described above, coarse dust contained in the air flowing into the first layer of the air conditioning filter is collected in the first layer, and bacteria are added by the antibacterial agent attached to the first layer. In addition, the air flowing out from the first layer and flowing into the second layer is deodorized by the adsorption action of the activated carbon contained in the second layer, and flows out from the second layer to the third layer. The virus contained in the air flowing into the air is detoxified by the antiviral function of the antibody attached to the third layer, and fine dust is collected in the fourth layer. Since it is released into the passenger compartment by the air conditioner, it is possible to attach an antibody having an antiviral function to the conventional air conditioning filter without increasing the number of filter layers, thereby increasing the ventilation resistance of the filter. Not It can be added to an antiviral function tone filter.

  Further, according to the air-conditioning filter configured as described above, since the antibody is attached to the third activated carbon holding layer, the activity of the antibody such as an antibacterial agent attached to the first layer is increased. It is not poisoned by coming into contact with a functional material containing a component that deteriorates.

  Further, according to the air-conditioning filter configured as described above, the flame retardant is attached to the first layer, and the antibody is attached to the third activated carbon holding layer different from the first layer. Both can exhibit their original functions.

  Therefore, an antiviral function can be added without impairing the function of the conventional air conditioning filter, and it can be used as an air conditioning filter for a vehicle air conditioner.

  The air conditioning filter according to claim 2 of the present invention is characterized in that the first layer contains an anti-allergen agent, and the air conditioning filter according to claim 3 of the present invention is the first layer. And an antifungal agent.

  According to the air-conditioning filter configured as described above, in the first layer, the allergen is inactivated by the anti-allergen agent, and in the first layer, the growth of the fungus is suppressed by the fungicide.

  Furthermore, the air-conditioning filter according to claim 4 of the present invention is characterized in that silver ions are further attached to the first layer.

  According to the air-conditioning filter configured in this way, even if the activity of the antibody attached to the third layer is lowered due to the influence of heat such as an increase in temperature, the silver attached to the first layer The antiviral effect can be maintained by the action of ions.

  The air-conditioning filter according to claim 5 of the present invention is characterized in that the antibody is an ostrich antibody.

  According to the air-conditioning filter configured as described above, since the ostrich antibody is used as the antibody, it is possible to mass-produce the antibody, and since a large amount of antibody can be collected from one living body, there is little variation in the quality of the antibody. High reliability can be obtained.

  According to the air-conditioning filter of the present invention, an effect that an antiviral function can be added without increasing the number of filter layers is obtained.

It is a figure explaining schematic structure of an air-conditioner for vehicles. It is a figure explaining the cross-sectional structure of 1st Example of the air-conditioning filter of this invention. It is a figure explaining the cross-sectional structure of 2nd Example of the air-conditioning filter of this invention.

  Hereinafter, an example in which the air conditioning filter according to the present invention is applied to a vehicle air conditioner will be described with reference to FIGS. 1 to 3.

  FIG. 1 is a configuration diagram showing a schematic configuration of a vehicle air conditioner.

  The vehicle air conditioner 1 is installed in a vehicle (not shown) and is driven by an engine 100 to pressurize a refrigerant. The vehicle air conditioner 1 is installed in a vehicle interior to control the blowing temperature, the blowing amount, and the blowing place. Thus, the air-conditioning unit 5 that controls the air-conditioning state in the passenger compartment, the air-conditioning control unit 105 that gives a control instruction to the air-conditioning unit 5, and the content of the control instruction that the air-conditioning control unit 105 gives to the air-conditioning unit 5 are determined. Therefore, the outside temperature sensor 130, the passenger compartment temperature sensor 131, the blowout temperature sensor 132, the solar radiation amount sensor 133, the water temperature sensor 134, the evaporator temperature sensor 135, which are sensors for measuring necessary information, and the vehicle occupant set temperature. For example, and an air conditioning display unit 120 for visually displaying the operating state of the air conditioning unit 5.

  The air conditioning unit 5 includes an outside air introduction port 24 that introduces outside air that is air outside the vehicle, an inside air introduction port 26 that introduces inside air that is air inside the vehicle interior, switching between inside air introduction and outside air introduction, and inside air. A rotatable intake door 20 that determines the mixing ratio of outside air, an intake door drive unit 22 that rotates the intake door 20, and the outside air, inside air, or a mixture thereof introduced from the intake door 20 is converted into the air conditioning unit 5. The blower fan 30 that blows air to the air passage 35 provided inside the air, the blower motor 32 that controls the rotational speed (fan speed) of the blower fan 30 to control the amount of air blown to the air passage 35, and the air blown from the blower fan 30 An air-conditioning filter 10 installed in a direction substantially orthogonal to the direction of the air flow, an evaporator (heat exchanger for air cooling) 40 in which the refrigerant circulates, A heater core (heat exchanger for air heating) 50 in which the cooling water discharged from the engine 100 circulates through a cooling water channel (not shown), and a rotatable air mix door installed between the evaporator 40 and the heater core 50. 60 and an air mix door driving unit 62 that rotates the air mix door 60.

  The air-conditioning filter 10 collects dust contained in the air that has passed through by passing the air, deodorizes the air, further suppresses the action of the allergen by an anti-allergen function, Suppresses the growth and suppresses the growth of mold by the fungicidal function. Detailed operation will be described later.

  The evaporator 40 circulates a refrigerant inside, performs heat exchange between the air that has passed through the evaporator 40 and the refrigerant, cools the air, and sends out cold air.

  The heater core 50 is heated by circulating the cooling water (hot water) of the engine 100 therein, and exchanging heat between the air passing through the heater core 50 and the hot water flowing through the heater core 50. Send air as warm air.

  The air mix door 60 controls the mixing ratio of the cool air that has passed through the evaporator 40 and the warm air that has passed through the heater core 50 after passing through the evaporator 40 by changing the opening.

  Downstream of the heater core 50, a mixing chamber 70 is formed in which the cold air that has passed through the evaporator 40 and the hot air that has passed through the heater core 50 are mixed. The mixing chamber 70 includes a defrost grill in the vehicle interior, A plurality of air outlets 80 respectively communicating with the vent grill and the foot grill (both not shown) are provided, and each air outlet 80 is rotatable in the vicinity of each air outlet 80 and has an air volume delivered from each air outlet 80. A door 90 for controlling the above is disposed.

  The sensors measure the following physical quantities. That is, the outside temperature sensor 130 measures the outside air temperature, the passenger compartment temperature sensor 131 measures the temperature inside the passenger compartment, the outlet temperature sensor 132 measures the temperature of the outlet 80, and the solar radiation amount sensor. 133 measures the amount of solar radiation hitting the vehicle, the water temperature sensor 134 measures the temperature of the cooling water of the engine 100, and the evaporator temperature sensor 135 measures the temperature of the air after passing through the evaporator 40.

  Next, based on each physical quantity measured by the sensors, the air conditioning control unit 105 determines the control content of the air conditioning unit 5, and controls the vehicle air conditioner 1 along the control content thus determined. Do.

[Description of air conditioning filter structure]
Next, the structure of the air conditioning filter 10 of the present invention will be described with reference to FIG. FIG. 2 is a diagram illustrating a cross-sectional structure of the air conditioning filter of the present invention.

  The air conditioning filter 10 of the present invention has a four-layer structure including a first layer 10a, a second layer 10b, a third layer 10c, and a fourth layer 10d in order from the upstream side of the air flow path.

  The first layer 10a includes an antiallergen containing, for example, a polyphenol compound in a filter medium 12a formed of a filter cloth made of a synthetic resin nonwoven fabric such as polypropylene (PP), polyethylene (PE), polyethylene terephthalate (PET), or the like. Agent 13, antibacterial agent 14 containing inorganic components such as copper and zinc, or organic components contained in wasabi, organic silicon quaternary ammonium salts, organic quaternary ammonium salts, biguanides, polyphenols, chitosan , An inorganic flame retardant comprising an organic flame retardant comprising a bromine compound, a phosphorus compound, a chlorine compound, an antimony compound, a metal hydroxide, and the like. A flame retardant 18 such as a flame retardant is attached.

  The second layer 10 b is a layer containing activated carbon 16 particles. The upper surface (upstream side) of the second layer 10b is bonded to the filter medium 12a constituting the first layer 10a with an adhesive, and the lower surface (downstream side) of the second layer 10b is bonded to the filter medium constituting the third layer 10c. It is bonded to 12c with an adhesive. In this way, the active carbon 16 can be prevented from being dispersed or dropped off by sandwiching and fixing the layer containing the activated carbon 16 particles between the filter medium 12a and the filter medium 12c.

  The third layer 10c is composed of a filter medium 12c formed of a filter cloth made of a synthetic resin nonwoven fabric such as polypropylene (PP), polyethylene (PE), polyethylene terephthalate (PET), etc., and the activated carbon 16 in the second layer 10b. It is a layer that plays the role of holding the second layer 10b so that it does not collapse and become discrete. And the antibody 17 which has an antiviral function is attached in the filter medium 12c which comprises this 3rd layer 10c.

  As the antibody 17, for example, an ostrich antibody produced from an ostrich egg is used. Ostriches are suitable for mass production of antibodies because they have a larger amount of antibodies that can be collected from one chicken than chickens. Since a large amount of antibody can be collected from one living body, there is little variation in antibody quality and the reliability is high.

  The fourth layer 10d is made of a filter medium 12d made of a non-woven fabric made of synthetic resin such as polypropylene (PP), polyethylene (PE), polyethylene terephthalate (PET), and the like. The filter medium 12d is charged. Fine dust such as pollen and tobacco particles contained in the air flowing into the fourth layer 10d is collected.

  In addition, an outer frame 19 formed of, for example, a synthetic resin is provided at the peripheral portions of the first layer 10a, the second layer 10b, the third layer 10c, and the fourth layer 10d. And the peripheral part of each layer of the air-conditioning filter 10 and the outer frame 19 are being fixed by adhesion | attachment, for example.

  When this air conditioning filter 10 is used for a long period of time, dirt adheres to the surface of the air conditioning filter 10 and the ventilation resistance increases.

  Therefore, it is desirable to replace the air conditioning filter 10 with a new one periodically.

  When the air conditioning filter 10 is replaced, the air conditioning filter 10 can be easily detached from the air conditioning unit 5 and replaced by holding the outer frame 19.

[Description of air conditioning filter manufacturing method]
Next, the manufacturing method of the air-conditioning filter 10 of this invention is demonstrated.

  The first layer 10a is manufactured by attaching the anti-allergen agent 13, the antibacterial agent 14, the antifungal agent 15 and the flame retardant 18 to the filter medium 12a, respectively. In addition, there are various means such as spraying and impregnation (dipping) in the method of attaching the drug, and any of them may be used.

  The second layer 10b is formed by spreading the particles of the activated carbon 16 on the downstream surface of the filter medium 12a coated with an adhesive or the upstream surface of the filter medium 12c coated with an adhesive, and the downstream surface of the filter medium 12a. It is manufactured by being sandwiched between the upstream surface of the filter medium 12c.

  The third layer 10c is manufactured by attaching the antibody 17 to the filter medium 12c. There are various methods such as spraying and impregnation (dipping) in the attaching method, and any of them may be used.

  The fourth layer 10d is manufactured by charging the filter medium 12d.

[Explanation of air filter function]
Next, the operation of the air conditioning filter 10 will be described.

The airflow flowing along the air flow path of the vehicle air conditioner 1 flows in the direction of the arrow D ₁ in FIG.

  At this time, the action of the anti-allergen agent 13 such as a polyphenol compound attached to the filter medium 12a of the first layer 10a exerts the anti-allergen action and suppresses (inactivates) the action of the allergen. In addition, the antibacterial effect is exerted by the action of the antibacterial agent 14 containing inorganic components such as copper and zinc attached to the filter medium 12a of the first layer 10a or containing the organic component contained in wasabi, thereby suppressing the growth of bacteria. Is done. In addition, an organic silicon quaternary ammonium salt-based, organic quaternary ammonium salt-based, biguanide-based, polyphenol-based, chitosan, silver-supported colloidal silica, silver-supported silver zeolite, and the like, which are attached to the filter medium 12a of the first layer 10a. The action of the agent 15 exerts an antifungal action and suppresses the growth of fungi.

  Furthermore, the first layer 10 a has a function of collecting coarse dust such as mites contained in the air that has flowed in, and has flame retardancy due to the action of the flame retardant 18. Even if a fire or the like occurs on the upstream side, the fire spread can be prevented by the action of the flame retardant 18.

  The air flowing out from the first layer 10 a of the air conditioning filter 10 then flows into the second layer 10 b of the air conditioning filter 10.

  Since the activated carbon 16 is contained in the second layer 10b of the air conditioning filter 10, the odor of the air (exhaust gas odor and ammonia odor) flowing into the second layer 10b is adsorbed by the deodorizing action of the activated carbon 16. .

  The air that has passed through the second layer 10 b of the air conditioning filter 10 then flows into the third layer 10 c of the air conditioning filter 10.

  The third layer 10c of the air conditioning filter 10 is a layer for holding the granular activated carbon 16 included in the second layer 10b so as not to be dispersed.

  The filter medium 12c of the third layer 10c is further attached with an antibody 17 having an antiviral function. A virus such as influenza virus contained in the air flowing into the third layer 10c is detoxified by the action of the antibody 17 attached to the third layer 10c.

  The air flowing out from the third layer 10c of the air conditioning filter 10 then flows into the fourth layer 10d of the air conditioning filter 10.

  The fourth layer 10d of the air conditioning filter 10 is charged, and fine dust such as pollen contained in the air flowing into the fourth layer 10d is collected.

The air flowing out from the fourth layer 10d is flowing in the direction of arrow D ₂ in FIG. 2, then flows into the evaporator 40 shown in FIG. 1, hereinafter, along the order described above, the air conditioning for vehicles Device 1 operates. Then, the air purified by the air conditioning filter 10 is discharged into the passenger compartment through the air outlet 80.

  As described above, according to the air-conditioning filter 10 according to the first embodiment, coarse dust contained in the air flowing into the first layer 10a is collected in the first layer 10a and is collected in the first layer 10a. The allergen is inactivated by the attached anti-allergen agent 13, and the growth of bacteria is suppressed by the antibacterial agent 14 and the antifungal agent 15, and further flows out from the first layer 10a to the second layer 10b. The inflowed air is deodorized by the adsorption function of the activated carbon 16 contained in the second layer 10b, and the virus contained in the air that has flowed out of the second layer 10b and entered the third layer 10c is attached to the third layer 10c. Since the anti-viral function of the antibody 17 is detoxified, fine dust is collected in the fourth layer 10d, and the air that has passed through the fourth layer 10d is released into the vehicle interior by the air conditioner. The antibody 17 having the antiviral function can be attached to the existing air conditioning filter without increasing the number of layers of the filter, thereby adding the antiviral function to the air conditioning filter without increasing the ventilation resistance. Can do.

  And according to the air-conditioning filter comprised in this way, since the antibody 17 was attached to the activated carbon holding layer of the 3rd layer 10c, the antibody 17 is the antibody 17 like the antibacterial agent 14 attached to the 1st layer 10a. It will not be poisoned by contact with a functional material containing a component whose activity decreases.

  Moreover, according to the air-conditioning filter configured as described above, the flame retardant 18 is attached to the first layer 10a, and the antibody 17 is attached to the activated carbon holding layer of the third layer 10c. Both can demonstrate their original functions.

  Furthermore, according to the air-conditioning filter configured as described above, since the ostrich antibody is used as the antibody 17, the antibody can be mass-produced, and a large amount of antibody can be collected from one living body. There is little variation and high reliability is obtained.

  Next, another embodiment in which the air conditioning filter according to the present invention is applied to a vehicle air conditioner will be described with reference to FIG. FIG. 3 is a diagram illustrating a cross-sectional structure of another embodiment of the air conditioning filter of the present invention.

  In FIG. 3, the air conditioning filter 11 has a four-layer structure including a first layer 11a, a second layer 10b, a third layer 10c, and a fourth layer 10d in order from the upstream side of the air flow path.

  The first layer 11a has the antibacterial described in Example 1 inside a filter medium 12a formed of a nonwoven fabric made of synthetic resin such as polypropylene (PP), polyethylene (PE), or polyethylene terephthalate (PET). In addition to the agent 14, the antifungal agent 15 and the flame retardant 18, silver ions 28 having an antiviral function are further attached.

  The configurations of the second layer 10b, the third layer 10c, and the fourth layer 10d in FIG. 3 are the same as the configurations of the second layer 10b, the third layer 10c, and the fourth layer 10d of the air conditioning filter 10 described in the first embodiment. Are the same.

  An outer frame 19 formed of, for example, a synthetic resin is provided at the periphery of the first layer 11a, the second layer 10b, the third layer 10c, and the fourth layer 10d.

[Explanation of air filter function]
Next, the operation of the air conditioning filter 11 will be described.

The airflow flowing along the air flow path of the vehicle air conditioner 1 flows in the direction of the arrow D ₁ in FIG.

  At this time, by the action of the anti-allergen agent 13 attached to the filter medium 12a of the first layer 11a, the anti-allergen action is exhibited and the action of the allergen is suppressed (inactivated). In addition, the antibacterial effect is exerted by the action of the antibacterial agent 14 attached to the filter medium 12a of the first layer 11a, thereby suppressing the growth of bacteria. Furthermore, the fungicidal action is exerted by the action of the fungicide 15 attached to the filter medium 12a of the first layer 11a, and the growth of fungi is suppressed. The operation of this part is the same as in the first embodiment.

  Further, the virus contained in the air flowing into the first layer 11a is inactivated by the antiviral action of the silver ions 28 attached to the filter medium 12a of the first layer 11a.

  Thereafter, in the second layer 10b, the third layer 10c, and the fourth layer 10d, the same operation as in the first embodiment is performed, and deodorization, anti-virus, and fine dust collection are performed.

The air flowing out from the fourth layer 10d is flowing in the direction of arrow D ₂ in FIG. 3, then flows into the evaporator 40 shown in FIG. 1, hereinafter, along the order described above, the air conditioning for vehicles Device 1 operates. Then, the air purified by the air conditioning filter 11 is discharged into the passenger compartment through the air outlet 80.

  Here, the silver ions 28 attached to the first layer 11a and the antibody 17 attached to the third layer 10c have the same antiviral function, and both inactivate viruses such as influenza virus. However, the antibody 17 has a higher immediate effect. In addition, silver ion 28 is more resistant to heat (antibody 17 may impair the antiviral function due to heat). Therefore, by using the antibody 17 and the silver ion 28 in combination, a higher antiviral function can be realized.

  As described above, according to the air-conditioning filter 11 according to the second embodiment, even when the activity of the antibody 17 attached to the third layer 10c is reduced, the silver attached to the first layer 11a. The antiviral effect can be maintained by the action of the ions 28.

  Although the embodiments of the present invention have been described in detail with reference to the drawings, the embodiments are only examples of the present invention, and therefore the present invention is not limited to the configurations of the embodiments. It goes without saying that design changes and the like within a range not departing from the gist are included in the present invention. For example, when each embodiment includes a plurality of configurations, it is a matter of course that possible combinations of these configurations are included even if not specifically described. Further, in the case where a plurality of embodiments and modifications are shown, it is a matter of course that possible combinations of configurations extending over these are included even if not specifically described. Further, the configuration depicted in the drawings is of course included even if not particularly described. Further, when there is a term of “etc.”, it is used in the sense that the equivalent is included. In addition, when there are terms such as “almost”, “about”, “degree”, etc., they are used in the sense that they include those in the range and accuracy recognized by common sense.

DESCRIPTION OF SYMBOLS 10 Air-conditioning filter 10a 1st layer 10b 2nd layer 10c 3rd layer 10d 4th layer 12a, 12c, 12d Filter medium 13 Antiallergen agent 14 Antibacterial agent 15 Antifungal agent 16 Activated carbon 17 Antibody 18 Flame retardant 19 Outer frame

Claims (5)

In order from the upstream side along the air flow path, all have air permeability,
A first layer having a coarse dust collecting function, including an antibacterial agent, and further attached with a flame retardant;
A second layer containing activated carbon and having a deodorizing effect;
A third layer holding the second layer;
An air-conditioning filter comprising a fourth layer that is charged and collects fine dust, wherein an antibody having an antiviral function is attached to the third layer.   The air-conditioning filter according to claim 1, wherein the first layer contains an anti-allergen agent.   The air-conditioning filter according to claim 1 or 2, wherein the first layer contains a fungicide.   The air conditioning filter according to any one of claims 1 to 3, wherein silver ions are further attached to the first layer.   The air-conditioning filter according to any one of claims 1 to 4, wherein the antibody is an ostrich antibody.