JP4873950B2 - Automotive air purification system - Google Patents

Description

  The present invention relates to an automobile air cleaning system that enables ventilation and dehumidification of in-vehicle air with high efficiency while maintaining a comfortable and clean air condition in an automobile interior.

  In recent years, the trend of global warming has become prominent, and high-efficiency use (energy conservation activities) of fossil fuels has been promoted as a countermeasure against the emission of carbon dioxide, the main greenhouse gas. In particular, since fossil fuels are often used as automobile fuels, improvement of automobile fuel consumption for reducing the amount of use is an urgent issue.

  It has been pointed out that as a cause of a reduction in fuel consumption of automobiles, the fuel consumption of automobiles is deteriorated by about 20% due to the operation of an in-vehicle air conditioner (hereinafter referred to as a car air conditioner) as compared with the case of not operating. In particular, car air conditioners are not only used for cooling and dehumidifying during the summer and rainy season, but also in winter to prevent fogging of the window glass. Invites global warming problems.

  Furthermore, in recent years, there are concerns about adverse effects on human bodies caused by volatile organic compounds (VOC) mainly caused by resins and adhesives frequently used in automobile interiors, and ventilation in the vehicle is also an important issue. On the other hand, along with ventilation in the vehicle, there are concerns about health damage caused by supplying full exhaust gas into the vehicle in tunnels and the like.

  On the other hand, recently, desiccant air conditioners as described in Patent Documents 1 and 2 have been proposed for the purpose of reducing the indoor air conditioning load. In the following Patent Document 1, an exhaust passage and an air supply passage that are opposite to each other are adjacent to each other through a partition wall, and moisture is moved from the high humidity side to the low humidity side by alternately exposing a hygroscopic agent to both passages. In addition to providing moisture absorbing / releasing means, heat exchange means for moving heat from the high temperature side to the low temperature side by moving the heat medium or the heat storage body between the two paths on both sides of the moisture absorbing / releasing means are further provided. In the desiccant type air conditioner in which a heater is provided between the heat exchange means on the upstream side and the moisture absorption / desorption drum, the heater is formed by a coil to which hot water is supplied from a gas water heater, or directly connected to a gas burner. It is described that it is formed by using a fire or an electric heater, and both the moisture absorption means and the heat exchange means are configured as a rotating drum provided with a honeycomb structure porous body.

Moreover, in the following Patent Document 2, the rotary adsorbent and the rotary sensible heat exchanger are provided so that the first air flow path and the second air flow path are adjacent to each other and the flow paths are blocked. In an air conditioner comprising heating means provided between the rotary adsorbent in the second air flow path and the rotary sensible heat exchanger, the rotary adsorbent includes silica gel on the surface of a honeycomb body. Further, there is described an air conditioner in which a desiccant rotor to which an adsorbent such as zeolite or activated carbon is applied or adhered by surface treatment is used, and a heater is used as the heating means.
JP-A-8-14600 JP 2002-235933 A

  However, in the case of the air conditioners described in Patent Documents 1 and 2 above, it is an apparatus that absorbs moisture in the air and mainly uses a substance (dehumidifying material) that adsorbs moisture to dry air. Since energy such as electric heating and gas heating is used to regenerate the dehumidifying material, the energy efficiency is very poor, and the apparatus tends to be large, and it is for special applications such as liquid crystal manufacturing factories and skating rinks.

  Furthermore, in the case of the air conditioners described in Patent Documents 1 and 2 above, a honeycomb-shaped wall body is often used as a wall body that accommodates the dehumidifying material, and adsorbs and filters the supplied external air dust and harmful chemical substances. There was a problem that filtering (removal processing) could not be performed.

  By the way, dehumidification in car air conditioners is configured to cool the air to a temperature below the dew point, separate condensed water by condensation, and then heat the cooled air to supply it as dry air into the vehicle For this purpose, a large amount of energy was consumed. Therefore, if the dehumidifying load of the car air conditioner can be reduced, it can be said that it is very effective for improving the fuel efficiency of the automobile.

  However, the desiccant dehumidifiers as described in Patent Documents 1 and 2 that have been spreading in recent years tend to be large in size, and are not suitable for mounting in automobiles. Moreover, the dehumidifying material used has been mainly used for those having a regeneration temperature of 100 ° C. or higher, so that it has not been put to practical use for automobiles. Furthermore, since the temperature of the dehumidifying material rises during moisture absorption by the dehumidifying material, there has been a problem that the moisture absorption capacity of the dehumidifying material is reduced.

  Thus, the main problem of the present invention is to realize a miniaturized automobile air purification system for reducing the dehumidifying load of a car air conditioner, which is one of the causes of deterioration of automobile fuel efficiency, and performing highly efficient interior ventilation. Another object is to provide an automobile air cleaning system that enables dust removal and removal of harmful chemical substances by efficient filtering of outside air supplied into the vehicle.

In order to solve the above-mentioned problems, the present invention according to claim 1 includes a filter device unit that incorporates a dehumidifying material and an adsorbing material and dehumidifies or humidifies circulating air and adsorbs or desorbs chemical substances and dust, and a heat storage body. A built-in heat storage device that cools or heats the circulating air, and supplies the outside air that has passed through the filter device through the heat storage device and then into the vehicle, and passes through the heat storage device. In addition to exhausting the in-vehicle air directly to the outside of the vehicle, the exhaust mode operation in which the high-temperature exhaust exhausted from the operation unit of the automobile is exhausted to the outside of the vehicle via the filter unit is alternately repeated. An automotive air cleaning system is provided.

  In the first aspect of the present invention, the air that has been dehumidified and removed of chemical substances in the filter device section is supplied to the vehicle during the air supply mode operation, and the moisture, chemicals adsorbed in the air supply mode operation are supplied during the regeneration mode operation. By desorbing substances and discharging them to the outside of the vehicle and repeating this air supply mode operation and regeneration mode operation alternately, it becomes possible to supply comfortable and clean air into the vehicle, reducing the dehumidification load of the car air conditioner As a result, deterioration of automobile fuel consumption can be prevented.

Further, by providing the heat storage device section, it is possible to adjust the temperature of the air that has been dehumidified by the filter device section and changed in temperature during the air supply mode operation, and the load of the car air conditioner can be reduced.

As an aspect of the present invention according to claim 2 , an air flow path formed so as to be capable of exchanging heat is disposed through a flow path and a partition wall of the filter device section, and the outside air flow is always supplied to the air flow path during the air supply mode operation. automotive air cleaning system of claim 1 Symbol mounting characterized by being configured to circulate is provided.

The present invention according to claim 2 circulates the flow path of the filter device section by configuring an air flow path that allows heat exchange between the air that has been dehumidified by the filter device section and raised in temperature during the air supply mode operation and the outside air. Therefore, it is possible to suppress the temperature rise of the air to be performed, and to maintain the dehumidifying performance of the dehumidifying material incorporated in the filter device section.

As the present invention according to claim 3, wherein the air supply mode operation, the motor vehicle air cleaning according to any one of claims 1-2, characterized in that using the in-vehicle air instead of outside air supplied to the filter device unit A system is provided.

Since the present invention according to claim 3 can supply the air in the vehicle as the air supplied to the filter device during the air supply mode operation, it can cope with the winter when the air is dry, heavy rain, etc. Since the in-vehicle air can be circulated even during bad weather conditions or outside air conditions that contain a large amount of dust, operation corresponding to various weather conditions is possible throughout the year.

According to a fourth aspect of the present invention, as the air to be supplied to the filter device during the air supply mode operation, the outside air or the air inside the vehicle is selected as an outside air introduction / inside air circulation switching switch of an air conditioner provided in an automobile. An automobile air cleaning system according to claim 3 is provided.

The present invention according to claim 4 is for facilitating the handling of the automobile air cleaning system.

According to a fifth aspect of the present invention, in the air supply mode operation, the air that has passed through the filter device section is guided upstream of an evaporator of an air conditioner provided in an automobile, cooled by heat exchange, and then supplied into the vehicle. An automobile air cleaning system according to any one of claims 1 to 4 is provided.

According to the fifth aspect of the present invention, it is possible to suppress the temperature rise of the air dehumidified by the dehumidifying material.

As the present invention according to claim 6 , in the filter in the filter device section, a particulate dehumidifying material having a moisture absorption effect and a particulate adsorption material having a chemical substance adsorption effect are dispersed and fixed to the breathable sheet. Or by adsorbing the liquid in which the dehumidifying material and the adsorbent are dissolved to the air-permeable sheet, followed by drying and crystallization, or containing the dehumidifying material and the adsorbing material The vehicle air cleaning system according to any one of claims 1 to 5, wherein the air filter system is a sheet-like filter configured by weaving fibers.

The present invention according to claim 6 can increase the contact area with the flowing air, and can efficiently absorb and desorb moisture, dust, chemical substances, etc. to the filter, Comfortable and clean air can be supplied to the interior of the vehicle, and the air conditioning load of the car air conditioner can be reduced. In addition, with this configuration, the filter and the filter device section can be easily manufactured to have a lightweight and compact structure, and maintenance can be facilitated by a filter cassette replacement system or the like.

As a seventh aspect of the present invention, the dehumidifying material used in the filter device section has a maximum moisture absorption amount in a humidity region having a relative humidity of about 35% or less. The vehicle air cleaning system according to any one of claims 1 to 6 , wherein the vehicle air cleaning system according to any one of claims 1 to 6 is used.

According to the seventh aspect of the present invention, it is possible to sufficiently dehumidify the air flowing through the filter device part during the air supply mode operation, and the dehumidifying material by the warm air from the operating device part during the regeneration mode operation. Can be sufficiently dried (regenerated), and the filter unit can be downsized.

The present invention according to claim 8 is characterized in that the filter of the filter device unit is provided with a photocatalytic substance and an ultraviolet irradiation device, and the filter device unit can be irradiated with ultraviolet rays during an air supply mode operation. An automobile air cleaning system according to any one of claims 1 to 7 is provided.

In the present invention described in claim 8, the air supplied into the vehicle can be cleaned by decomposing and detoxifying the harmful chemical substances of the photocatalyst.

As the present invention according to claim 9, at the start of the automobile air freshening system is always automobile air freshening system according to any one of claims 1-8, characterized in that so as to start from the playback mode operation Is provided.

In the present invention described in claim 9 , when the automobile air cleaning system is started, if the filter of the filter device portion contains a large amount of moisture or chemical substance, these moisture or chemical substance flows into the vehicle. Can be prevented, and efficient ventilation in the vehicle becomes possible.

  As described above, according to the present invention, a miniaturized automobile air purification system for reducing the dehumidification load of a car air conditioner, which is one of the causes of deterioration of automobile fuel efficiency, and performing highly efficient interior ventilation is realized. In addition, it is possible to remove dust and remove harmful chemical substances by efficiently filtering the outside air supplied into the vehicle.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a diagram showing a configuration example of an automobile air cleaning system CS according to the present invention.

  The automobile air cleaning system CS according to the present invention includes a filter 1 including a dehumidifying material 1A, an adsorbing material 1B, and a photocatalyst 1C, and a filter 1 that performs dehumidification or humidification of circulating air and adsorption or desorption of dust and chemical substances. It is mainly comprised from the part 4, the heat storage apparatus part 7 which incorporates the heat storage body 8, and cools circulation air or heats circulation air, and the ultraviolet irradiation device 6 which activates the chemical substance decomposition | disassembly effect | action of the said photocatalyst 1C .

  Air supply mode operation in which the outside air 2 or the vehicle interior air 3 that has passed through the filter device section 4 is supplied to the interior of the vehicle after passing through the heat storage device section 7 and the vehicle interior air 3 that has passed through the heat storage device section 7 are directly Exhaust mode operation in which high-temperature exhaust discharged from the vehicle operating unit 9 such as an engine cooling device or a turbocharger intercooler is discharged outside the vehicle via the filter unit 4 is alternately repeated. Is to be done.

  The flow path configuration of the automobile air cleaning system CS differs depending on the season of operation. That is, when the outside air 2 is in a high temperature and high humidity condition in which the outside air 2 contains a relatively large amount of moisture as compared with the indoor air 3 during the summer season or the rainy season, the outside air 2 passes through the filter unit 4 during the air supply mode operation. The dehumidification, removal of chemical substances, and the like are configured to be supplied into the vehicle, and a regeneration operation for regenerating the dehumidifying material 1A, the adsorbent 1B, and the photocatalyst 1C is performed during the regeneration mode operation. Further, in the low temperature and low humidity conditions in which the vehicle interior air 3 contains a relatively large amount of water compared to the outside air 2 as in the winter season or the dry season, the vehicle interior air 3 passes through the filter device section 4 during the air supply mode operation. The dehumidification, the removal of chemical substances, and the like are configured so as to be supplied into the vehicle, and the regeneration operation for regenerating the dehumidifying material 1A, the adsorbent 1B, and the photocatalyst 1C is performed during the regeneration mode operation. As a result, the outside air 2 or the vehicle interior air 3 is supplied to the vehicle after temperature / humidity adjustment, chemical substance removal, etc., respectively, and the effect of reducing the air-conditioning load accompanying ventilation is exhibited.

  Note that, even in the summer season or in the rainy season, the in-vehicle air 3 can be circulated in bad weather such as heavy rain or in an outside air condition that contains a large amount of dust. This enables operation corresponding to various weather conditions throughout the year.

[Configuration of automobile air purification system CS]
First, the configuration of the automobile air cleaning system CS will be described in detail. As shown in FIGS. 1 to 3, the automobile air cleaning system CS includes a dehumidifying material 1 </ b> A, an adsorbing material 1 </ b> B, and a photocatalyst 1 </ b> C, and performs dehumidification or humidification of circulating air and adsorption or desorption of dust and chemical substances. A filter device section 4 provided with a filter 1, a heat storage device section 7 that contains a heat storage body 8 and cools the circulating air or heats the circulating air, and an ultraviolet irradiation device 6 that activates the chemical substance decomposition action of the photocatalyst 1C. And mainly consists of

  The filter unit 4 includes a dehumidifying material 1A such as silica gel, and serves to absorb and desorb moisture (humidity) of the outside air 2 or the vehicle interior air 3 and also includes an adsorbing material 1B such as activated carbon. Or one or a plurality of filter channels 5A, 5A,... Having a filter 1 that acts to absorb and desorb harmful chemical substances such as dust, exhaust gas, and volatile organic compounds (VOC) in the interior air 3 and the filter flow. .. And air passages 5B, 5B,... That alternately intersect with each other via partition walls and have heat exchangeable action so as to cool the temperature that rises due to the moisture absorption of the dehumidifying material 1A. .

  The heat storage device section 7 includes a heat storage body 8 and is connected to the filter flow path 5A. When the outside air 2 or the vehicle interior air 3 passes, the heat storage device section 7 adjusts the temperature of the gas by the action of heat dissipation or heat storage of the heat storage body 8. Do.

  The ultraviolet irradiating device 6 includes a photocatalytic substance 1C in the filter 1 of the filter device unit 4, and has an action of decomposing a chemical substance by irradiating the filter 1 with ultraviolet rays during an air supply mode operation.

  In addition, high-temperature exhaust discharged from the operation unit 9 of the automobile such as an engine cooling device or a turbocharger intercooler is directly connected to the connection portion between the filter flow path 5A and the heat storage unit 7 of the automobile air cleaning system CS. An exhaust duct 10 for leading to the filter 1 is connected, and high-temperature air is supplied at the time of moisture desorption (regeneration) of the dehumidifying material 1A in the filter 1 and at the time of dust and chemical substance desorption (regeneration) of the adsorbent 1B. It is like that. Note that a fan (not shown) for supplying and exhausting air is appropriately disposed in each flow path.

  The filter 1 disposed in the filter flow path 5A of the filter device section 4 has substantially the same size as the inner space of the filter flow path 5A, and has a particulate dehumidifying material 1A having a moisture absorption effect, dust, and a chemical substance. Paper adsorbent 1B having an adsorbing effect and the like and powder photocatalyst 1C effective in decomposing and detoxifying harmful chemical substances by irradiation with ultraviolet light (especially highly air-permeable paper such as Japanese paper) In addition, the sheet can be dispersed and fixed using a means for weaving or weaving into a breathable sheet such as a nonwoven fabric, cloth or gauze.

  The filter 1 may have one stage with respect to the filter flow path 5A, or may have multiple stages as shown in FIG.

  As the filter 1, the dehumidifying agent 1A, the adsorbent 1B, and the photocatalyst 1C are powdered and dispersed and fixed on a breathable sheet such as paper, nonwoven fabric, cloth, gauze, etc., so that the contact area with the circulating air is increased. It is possible to increase the amount of moisture, dust, chemical substances, etc. on the filter 1 efficiently. With these functions, it is possible to have dust removal performance equivalent to or better than that of air filters used in conventional automobiles, and further, moisture contained in circulating air can be removed by the dehumidifying material 1A, and diesel engine contained in the outside air 2 or the like It becomes possible to adsorb chemical substances such as exhaust gas particulates, VOC and tobacco smoke on the adsorbent 1B, and in addition, the photocatalyst 1C can decompose and remove the chemical substances, etc. Therefore, the air conditioning load of the car air conditioner can be reduced, and the fuel efficiency of the car can be improved.

  In addition, with this configuration, the filter 1 and the filter device unit 4 can be easily manufactured in a lightweight and compact structure, and maintenance can be facilitated by a cassette replacement method of the filter 1 or the like.

  As the dehumidifying material 1A, conventionally known silica gel, zeolite, polymer dehumidifying material and the like can be used. In particular, among these various dehumidifying materials, in the present invention, the maximum moisture absorption amount in a humidity region having a relative humidity of about 65% or more is more than twice the maximum moisture absorption amount in a humidity region having a relative humidity of about 35% or less. It is desirable. As the dehumidifying material having such physical property values, a polymer dehumidifying material containing a specific amount of a potassium salt-type carboxyl group and composed of an organic polymer hygroscopic polymer having a crosslinked structure, for example, What is indicated by 2005-21840 gazette can be used. This enables sufficient dehumidification of the air flowing through the filter device unit 4 during the air supply mode operation, and sufficient drying of the dehumidifying material 1A by the warm air from the operating device unit during the regeneration mode operation ( Reproduction) and the filter device unit 4 can be downsized.

At the time of the air supply mode operation, the air dehumidified by the filter device unit 4 is guided upstream of the evaporator (refrigerant evaporator) of the car air conditioner and cooled by heat exchange, and then supplied into the vehicle. The temperature of the air in which moisture is adsorbed by the dehumidifying material 1A rises. Therefore, the temperature-increased air is led upstream of an evaporator (refrigerant evaporator) that is a cooling device for a car air conditioner, the temperature of the air is reduced, and then the temperature-adjusted air is supplied into the vehicle. At this time, since the air that has passed through the filter device section 4 is dried and purified, condensation in the evaporator does not occur, and it acts only to lower the temperature.
This automobile air cleaning system CS is used to prevent the moisture and chemical substances from flowing into the vehicle when the filter 1 of the filter unit 4 contains a large amount of moisture and chemical substances. When the cleaning system CS is started, the system control is performed so as to always start from the regeneration mode operation.

[Operation status of automobile air purification system CS]
Next, the operation state of the automobile air purification system CS will be described in detail by dividing it into climatic conditions in summer (high temperature and high humidity), winter (low temperature and low humidity), and in the rainy season (intermediate temperature but high humidity).

(Summer season)
FIG. 4 is a diagram showing a flow path configuration and a temperature / humidity state of air in each part in a summer air supply mode operation, and FIG. 5 is a summer regeneration mode operation.
In the summer, the outside air 2 is assumed to be hot and humid with a temperature of 33 ° C and a relative humidity of 60% RH (hereinafter referred to as each unit only). The automobile air cleaning system CS is operated so that the air supplied to the room after passing through the CS becomes 26 ° C. and 40% RH.

  In the summer air supply mode operation, as shown in FIG. 4, first, the outside air 2 is guided to the filter channels 5A, 5A,... Of the filter device section 4, and the filters 1, 1,. Flows through. At this time, moisture contained in the outside air 2 is adsorbed on the dehumidifying material 1A contained in the filter 1, and dust, chemical substances, etc. contained in the outside air 2 are adsorbed on the activated carbon 1B. Furthermore, by irradiating the inside of the filter channel 5A with ultraviolet rays by the ultraviolet irradiation device 6, it is possible to activate the photocatalyst 1C contained in the filter 1 and to decompose and detoxify harmful chemical substances passing through the filter 1. It becomes. Accordingly, it is possible to supply clean outside air in which humidity is adjusted and dust and chemical substances are decomposed and removed.

  Here, with the moisture adsorption of the dehumidifying material 1A, the temperature of the air passing through the filter flow path 5A rises, the temperature of the filter 1 also rises, and the dehumidifying ability of the dehumidifying material 1A decreases due to the temperature rise of the filter 1 There is a problem to do. As a countermeasure, the air passing through the filter channels 5A, 5A,... Is cooled by alternately passing the filter channels 5A, 5A,. At the same time, the filter 1 and the dehumidifying material 1A are cooled. The air after passing through the filter channels 5A, 5A,... Of the filter unit 4 has a temperature of about 37 ° C. and a relative humidity of about 20% RH, and is then sent to the heat storage unit 7. On the other hand, the outside air 2 that has passed through the air flow paths 5B, 5B... And exchanged heat with the air flowing through the filter flow paths 5A, 5A.

  Further, the air flowing from the filter device unit 4 into the heat storage device unit 7 comes into contact with the pebble heat storage body 8 in the heat storage device section 7 and is lowered in temperature as it flows down (gives retained sensible heat to the heat storage body 8). After being finally cooled down to the target temperature of about 26 ° C., it is supplied into the vehicle.

  By operating in this air supply mode, the outside air that is hot and humid and contains harmful chemical substances such as exhaust gas is reduced in temperature and humidity, dust removal, removal of harmful chemical substances, and detoxification. Since air can be supplied into the vehicle, the cooling / dehumidifying load of the car air conditioner is greatly reduced, and the fuel efficiency of the vehicle can be improved without impairing comfort.

  Next, the driving state during driving in the summer regeneration mode will be described. In the regeneration mode operation, regeneration is performed by drying the dehumidifying material 1A that has adsorbed a large amount of moisture and desorption of the adsorbent 1B that has adsorbed dust and chemical substances, and cooling the regenerator 8 that has accumulated heat. Objective.

  In the regeneration mode operation, as shown in FIG. 5, first, the in-vehicle air 3 (26 ° C., 40% RH) is guided to the heat storage device 7 and flows down while coming into contact with the pebble heat storage body 8. The sensible heat is taken from the body 8 to cool the heat storage body 8, and at the same time, the temperature of the air is raised and then exhausted outside the vehicle.

  On the other hand, for regeneration of the dehumidifying material 1A and the adsorbing material 1B, a high-temperature exhaust (about 75 ° C, 6% RH or less) used in the engine operating unit 9 such as an engine cooling device or a turbocharger intercooler is filtered. .. Are supplied to the filter channels 5A, 5A,... Of the device unit 4 to desorb a large amount of moisture adsorbed on the dehumidifying material 1A to dry (regenerate) the dehumidifying material 1A, and dust adsorbed on the adsorbing material 1B. Desorbs chemical substances by backwashing effect. As described above, since the exhaust gas at a high temperature of the operating unit 9 is used for the regeneration of the dehumidifying material 1A and the adsorbing material 1B, the time required for the regeneration of the dehumidifying material 1A and the adsorbing material 1B can be significantly reduced. An efficient ventilation system became possible.

  The automobile air purification system CS is operated by repeatedly operating the air supply mode and the exhaust mode, thereby drying the dehumidifying material 1A, removing the dust from the adsorbent 1B, and cooling (regenerating) the heat accumulator 8. Dehumidification, adsorption and cooling in the air supply mode operation are possible.

(In case of rainy season)
FIG. 6 is a diagram showing the air flow mode operation during the rainy season, and FIG. 7 is a diagram showing the flow path configuration and the temperature and humidity state of the air in each part during the regeneration mode operation during the rainy season.
In the rainy season, the outside air 2 is an intermediate temperature of 26 ° C and relative humidity 70% RH, but it is assumed that the outside air 2 is humid. The outside air 2 is supplied to the room after passing through the automobile air purification system CS. The automobile air cleaning system CS is operated so that the air to be generated is 26 ° C. and 50% RH.

  The air supply mode operation and the regeneration mode operation during the rainy season are almost the same as the summer air supply mode operation and the regeneration mode operation, and as shown in FIG. 6, the outside air 2 (26 ° C., 70% RH) is filtered. After dehumidification, dust removal, chemical substance removal / decomposition by the filter 1 built in the filter flow path 5A of the device unit 4, the air supply mode operation is performed in which the temperature is adjusted by the heat storage device unit 7 and supplied into the vehicle. As shown in FIG. 7, the vehicle interior air 3 (26 ° C., 50% RH) cools the heat storage body 8 of the heat storage device section 7, and at the same time, the high temperature exhaust (about 75 ° C., 5% RH or less) of the operation device section 9. ) Is supplied to the filter 1 of the filter unit 4 and the water, dust, etc. adsorbed on the filter 1 are desorbed by the reverse cleaning effect and discharged to the outside of the vehicle.

(In winter)
FIG. 8 is a diagram showing a flow path configuration and a temperature / humidity state of air in each part in a winter air supply mode operation, and FIG. 9 is a winter regeneration mode operation.
In the winter season, the outside air 2 is assumed to be at a low temperature and low humidity of 0 ° C. and 40% RH, and the air supplied to the room after passing through the vehicle air purification system CS is 22 ° C. Operate a car air purification system CS that will be 40% RH.

  When operating in the air supply mode in winter, as shown in FIG. 8, first, the switch for switching between outside air introduction / inside air circulation of the car air conditioner is set to inside air circulation, and the inside air 3 (22 ° C., 60% RH) is filtered by the filter device 4. Are guided to the filter flow paths 5A, 5A. In this way, outside air is rarely supplied in the winter, but there are cases where it is operated for the purpose of dehumidification in order to prevent the fogging of the window glass from rising due to a large number of passengers in the automobile and the like.

  As described above, it is preferable to link the switching of the outside air introduction / inside air circulation switch with the selection of the outside air 2 or the inside air 3 as the air supplied to the filter device section 4.

  The in-vehicle air 3 introduced into the filter flow paths 5A, 5A,... Is dehumidified by the dehumidifying material 1A of the filter 1, and chemical substances such as dust, VOC and cigarette smoke are adsorbed by the adsorbing material 1B. . Furthermore, by irradiating the inside of the filter channel 5A with ultraviolet rays by the ultraviolet irradiation device 6, it is possible to activate the photocatalyst 1C contained in the filter 1 and to decompose and detoxify harmful chemical substances passing through the filter 1. It becomes. Accordingly, it is possible to supply clean air in which humidity is adjusted and dust and chemical substances are decomposed and removed.

Then, after being sent to the heat storage device section 7, it is returned to the vehicle interior (22 ° C., 40% RH).
On the other hand, during the regeneration mode operation in winter, as shown in FIG. 9, the air (22 ° C., 40% RH) in the vehicle causes the heat storage device section 7 to move in the same manner as during the regeneration mode operation in the summer and the rainy season. The exhaust (50 ° C or higher, 2% RH) used in the operating unit 9 is back-flushed to the outside of the vehicle, and the humidity, dust, etc. adsorbed on the filter 1 of the filter unit 4 are backwashed. As a result, it is released into the atmosphere.

1 is a schematic configuration diagram of an automobile air cleaning system CS according to the present invention. FIG. 4 is a schematic diagram showing a flow path configuration of the filter device section 4. 4 is a schematic view of a filter channel 5A of the filter device section 4. FIG. It is the figure which showed the flow path structure at the time of the air supply mode driving | operation of a summer, and the state of the temperature and humidity of each part. It is the figure which showed the flow path structure at the time of the reproduction | regeneration mode driving | operation of a summer, and the state of the temperature and humidity of each part. It is the figure which showed the flow path structure at the time of the air supply mode driving | operation at the time of a rainy season, and the state of the temperature and humidity of each part. It is the figure which showed the flow path structure at the time of the exhaust mode operation at the time of the rainy season, and the state of the temperature and humidity of each part. It is the figure which showed the flow path structure at the time of the air supply mode driving | operation of winter, and the state of the temperature and humidity of each part. It is the figure which showed the flow path structure at the time of the exhaust mode operation of winter, and the state of the temperature and humidity of each part.

DESCRIPTION OF SYMBOLS 1 ... Filter, 1A ... Dehumidifier, 1B ... Adsorbent, 1C ... Photocatalyst, 2 ... Outside air, 3 ... Car interior air, 4 ... Filter apparatus part, 5A ... Filter flow path, 5B ... -Air flow path, 6 ... Ultraviolet irradiation device, 7 ... Heat storage device section, 8 ... Heat storage body, 9 ... Operating device section, CS ... Automotive air cleaning system

Claims (9)

  A dehumidifying material and an adsorbing material are incorporated, and a filter device unit that dehumidifies or humidifies circulating air and adsorbs or desorbs chemical substances and dust, and a heat storage device unit that incorporates a heat storage body and cools or heats the circulating air. The air supply mode operation for supplying the outside air that has passed through the filter device section to the inside of the vehicle after passing through the heat storage device portion, and the vehicle interior air that has passed through the heat storage device portion are directly discharged to the outside of the vehicle and the operation of the automobile An automobile air cleaning system characterized in that exhaust mode operation in which high-temperature exhaust exhausted from the apparatus section is exhausted outside the vehicle via the filter apparatus section is alternately repeated. An air flow path formed so as to be able to exchange heat via a flow path and a partition wall of the filter device portion is disposed, and the outside air is always circulated through the air flow path during the air supply mode operation. claim 1 Symbol placement automobile air freshening system is. The air supply mode operation, the motor vehicle air-cleaning system according to any one of claims 1-2, characterized in that using the in-vehicle air instead of outside air supplied to the filter device unit. As the air to be supplied to the filter device during the air supply mode operation, the selection of the outside air or the inside air is linked with an outside air introduction / inside air circulation switching switch of an air conditioner provided in an automobile. The automobile air cleaning system according to claim 3 . The air that has passed through the filter device section during the air supply mode operation is led to an upstream side of an evaporator of an air conditioner provided in an automobile, cooled by heat exchange, and then supplied into the vehicle. The automobile air cleaning system according to any one of 4 to 4 . The filter in the filter device section is configured by dispersing and fixing a powdery dehumidifying material having a hygroscopic effect and a powdery adsorbing material having a chemical substance adsorbing effect on the breathable sheet, or It is configured by adsorbing a liquid in which a dehumidifying material and an adsorbing material are dissolved on a breathable sheet, and then drying and crystallizing, or by incorporating fibers containing the dehumidifying material and the adsorbing material. It is set as a sheet-like filter, The automobile air purification system in any one of Claims 1-5 characterized by the above-mentioned. As the dehumidifying material used in the filter device section, a material having a maximum moisture absorption in a humidity region having a relative humidity of about 65% or more and a maximum moisture absorption in a humidity region having a relative humidity of about 35% or less should be used. The automobile air cleaning system according to any one of claims 1 to 6 . Provided with a photocatalytic material in the filter of the filter device unit, comprising an ultraviolet irradiation device, to any one of claims 1-7, characterized in that a possible irradiation constituting ultraviolet to the filter device portion during supply mode operation The automotive air purification system described. The automobile air purification system according to any one of claims 1 to 8 , wherein the automobile air purification system is always started from a regeneration mode operation when the automobile air purification system is started.

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