JP2009121762A - Circulation type ventilation system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To effectively utilize a system resource of a circulation type ventilation system to regenerate an adsorption filter while maintaining its function. <P>SOLUTION: This circulation type ventilation system includes an air supply passage 2 entering the interior of a room from an air supply fan 1, an outside air intake passage 3 extending from the outdoors to the air supply fan, a circulation passage 4 extending from the interior of the room to the air supply fan, and an exhaust passage 6 extending from the interior of the room through an exhaust fan 5 to the outdoors, wherein the circulation passage includes an air cleaning part 8 on which the adsorption filter 7 is mounted, a regenerating exhaust passage 9 is constructed extending from the downstream side of the air cleaning part to the upstream side of the exhaust fan of the exhaust passage, passage opening and closing means 10a, 10b are provided in the regenerating exhaust passage and on the downstream side from the air cleaning part of the circulation passage, and a heating means 11 for the adsorption filter is provided in the air cleaning part. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a circulation type ventilation system in a house or the like.

  At present, ventilation facilities are obligatory for houses due to the revision of the Building Standards Law. As for the ventilation system of this ventilation equipment, the first type ventilation equipment that uses the ventilation equipment for both supply and exhaust, the second kind ventilation equipment that supplies the air through the ventilation equipment and the exhaust air through the natural exhaust port or the gap, and the exhaust equipment performs the exhaust through the ventilation equipment The air supply is classified into three types, that is, a third type ventilation facility that is operated from a natural air inlet or a gap. In addition, even in the case of the first type ventilation equipment that uses the ventilation equipment for both supply and exhaust, it may be classified as the third type ventilation equipment depending on the balance of the supply and exhaust amount.

  As one system of the above-described ventilation equipment, for example, as shown in Patent Document 1, an air supply path from an air supply fan to a room, an outside air intake path from the outside to an air supply fan, and an air supply fan from the room There is a circulation type ventilation system that constitutes a circulation route that leads to an exhaust route that leads from the room to the outdoors via an exhaust fan. In the ventilation system of Patent Document 1, an air purifier provided with a filter is provided in a confluence path that joins the air supply path and the circulation path to reach the air supply fan. In this configuration, dust, pollen, odor, VOC and the like in indoor air are removed.

In such a system, as a filter for removing harmful substances and purifying air, for example, as shown in Patent Document 2, activated carbon, zeolite, or a filter in which a metal honeycomb is coated on a ceramic honeycomb is used. An adsorption filter is used.
Japanese Patent Laid-Open No. 10-220838 JP 2002-276999 A

  When an adsorption filter such as activated carbon is used as a filter for purifying air, the removal rate of harmful substances such as volatile organic compounds is initially high, but the removal performance deteriorates over time and the removal rate Will fall.

  Conventionally, when an adsorption filter such as activated carbon has deteriorated, it has been dealt with by replacing it, so that the financial burden on the user is large and the effective use of resources is not achieved, maintaining a good global environment. It is also a problem in doing.

  The present invention was devised in view of the above-described problems. That is, it is an object of the present invention to enable regeneration of an adsorption filter by effectively using system resources of a circulation type ventilation system. .

  In order to solve the above-described problems, in the present invention, an air supply path from the air supply fan to the indoor air, an outside air intake path from the outdoor to the air supply fan, a circulation path from the indoor to the air supply fan, In the circulation type ventilation system that configures the exhaust path from the exhaust fan to the outside, an air purification unit with an adsorption filter is provided in the circulation path, from the downstream side of the air purification unit to the upstream side of the exhaust fan of the exhaust path A regenerative exhaust system comprising a regenerative exhaust system, and a circulation type ventilation system provided with a path opening / closing means downstream of the air purification section of the circulation path and a heating means for an adsorption filter in the air purification section. suggest.

  In the present invention, the air supply path from the air supply fan to the room, the outside air intake path from the outside to the air supply fan, the circulation path from the room to the air supply fan, and the room through the exhaust fan to the outdoors. In a circulation type ventilation system that constitutes an exhaust path, an air purifying unit with an adsorption filter is provided in the circulation path, and a regeneration unit that can be fitted with an adsorption filter is connected to the exhaust path upstream of the exhaust fan. A circulation type ventilation system is proposed in which an air intake path provided with a path opening / closing means is provided, and a heating means is provided in the regenerator.

  And in this invention, the circulation type ventilation system which comprised the water vapor | steam supply means which supplies water vapor | steam to an air purification part or a reproduction | regeneration part in the above structure is proposed.

  In the present invention, in the above configuration, the water vapor supply means includes a path opening / closing means provided in the exhaust path from the bathroom, and a bathroom water vapor supply path from the upstream side to the air purification unit, and the bathroom water vapor supply path We propose a circulation type ventilation system with a path opening and closing means.

  In the present invention, in the above configuration, the water vapor supply means includes a water vapor condensing unit provided in the exhaust path from the bathroom, a cleaning means for purifying the condensed water, and pressurizing the purified condensed water to purify the air. A circulation type ventilation system is proposed in which spraying is performed from a spray section provided in the section.

  According to the first aspect of the present invention, the normal operation of the circulation type ventilation system can be performed in a state where the path opening / closing means of the circulation path is opened and the path opening / closing means of the regeneration exhaust path is closed. Volatile organic compounds (VOC) such as formaldehyde (HCHO) contained in the air flowing in the air can be adsorbed and removed by the adsorption filter in the air purification unit.

  When the time has elapsed in the above operation, the path opening / closing means of the circulation path is closed, the path opening / closing means of the regeneration exhaust path is opened, and the heating means of the air purification unit is operated to regenerate the adsorption filter. Do the driving to do.

  In this operation, the first type ventilation facility or the third type is provided by an air supply path from the air supply fan to the room, an outside air intake path from the outside to the air supply fan, and an exhaust path from the room to the outside through the exhaust fan. The function as a seed ventilation facility can be maintained.

  On the other hand, by operating the heating means to heat the adsorption filter, the volatile organic compound adsorbed on the adsorption filter can be desorbed and regenerated. For example, when activated carbon is used as the adsorption filter, gaseous substances such as VOC and formaldehyde can be desorbed by heating the adsorption filter to, for example, 220 to 260 degrees.

  Volatile organic compounds desorbed from the adsorption filter in the air purification section are sucked into the exhaust fan of the exhaust path through the regeneration exhaust path, and pass through the exhaust path together with the indoor air from the circulation path upstream of the air purification section. It is discharged outdoors.

  In this way, the amount of volatile organic compounds discharged outdoors together with the ventilated room air is very small in the outdoor environment, so it is discharged in a state diluted with the ventilated room air. This has virtually no impact on the environment.

  Next, in the second aspect of the invention, the normal operation of the circulation type ventilation system is performed in a state in which the path opening / closing means of the air intake path of the regeneration unit is closed and no air is exhausted through the regeneration unit. Volatile organic compounds (VOC) such as formaldehyde (HCHO) contained in the air flowing through the circulation path can be adsorbed and removed by the adsorption filter in the air purification unit.

  In this operation, when the time has elapsed, the adsorption filter is taken out from the air purification unit and attached to the regeneration unit, the opening / closing unit of the air intake path is opened, and the heating unit of the regeneration unit is operated to operate the adsorption filter. Drive to regenerate.

  In this operation, the first type ventilation facility or the third type is provided by an air supply path from the air supply fan to the room, an outside air intake path from the outside to the air supply fan, and an exhaust path from the room to the outside through the exhaust fan. The function of the seed ventilation system can be maintained, and the indoor air circulation is performed with no adsorption filter installed in the air purification unit, and in some cases with other replacement adsorption filters installed. It can be performed.

  At the same time, in the regeneration unit, the heating means is operated to heat the adsorption filter, so that the volatile organic compound adsorbed on the adsorption filter can be desorbed and regenerated as described above.

  Volatile organic compounds desorbed from the adsorption filter in the regeneration unit are sucked into the exhaust fan of the exhaust path and discharged to the outdoors through the exhaust path together with the air from the air intake path. Note that the air taken into the regeneration unit from the air intake path may be outside air or indoor air.

  As described above, the volatile organic compound generated during the regeneration has substantially no influence on the environment by being discharged in a state diluted with the outside air or the room air to be ventilated.

  Here, at the time of regeneration, more effective desorption can be performed by supplying water vapor to the air purification unit or the regeneration unit in addition to heating by the heater. In addition to the above, when the steam is heated steam, the gaseous substance of the volatile organic compound can be efficiently and safely desorbed.

  The steam supply in the activation may be supplied from the bathroom after bathing to the air purification unit or the regeneration unit as the steam by the steam supply means, or the water is supplied to the air purification unit or the regeneration unit and sprayed there. Thus, water vapor may be supplied.

  In this way, in the present invention, the regeneration of the adsorption filter can be performed periodically and appropriately, and removal of harmful substances such as volatile organic compounds can be effectively performed by maintaining a high removal rate at all times. Can do.

Next, the best mode for carrying out the present invention will be described with reference to the accompanying drawings.
First, FIG. 1 shows a first embodiment of a circulation type ventilation system of the present invention.
Reference numeral 1 denotes an air supply fan. The air supply path 2 extends from the air supply fan 1 into the room, the outside air intake path 3 extends from the outside to the air supply fan 1, and the circulation path 4 extends from the room to the air supply fan 1. is doing. On the other hand, reference numeral 5 denotes an exhaust fan, which constitutes an exhaust path 6 from the room through the exhaust fan 5 to the outdoors. Reference numerals 6a, 6b, and 6c indicate exhaust paths from various places such as a bathroom, a washroom, and a toilet.

  In the present invention, an air purification unit 8 having an adsorption filter 7 attached to the circulation path 4 is provided, and a regenerative exhaust path 9 extending from the downstream side of the air purification unit 8 to the upstream side of the exhaust fan 5 of the exhaust path 6 is configured. The regenerative exhaust path 9 and path opening / closing means 10a and 10b are provided on the downstream side of the air purification section 8 of the circulation path 4, and a heating means 11 of the adsorption filter 7, such as a sheathed heater, is provided in the air purification section 8. Provided. A thermostat 12 for temperature control is provided in the air purification unit 8. Moreover, although the motor damper is used as the path opening / closing means 10a, 10b, it may be manually opened / closed.

  The adsorption filter 7 is typically one using activated carbon as an adsorbent, but as described above, it can be regenerated by heating, such as a filter in which a ceramic honeycomb is coated with zeolite, carbon ceramic, or metal oxide. Any suitable adsorbent can be used.

  In FIG. 1, symbol OA indicates outside air, SA indicates supply air, RA indicates circulating air, EA indicates exhaust air, and these symbols are The same applies to the other drawings. Further, in FIG. 1, the path opening / closing means 10a and 10b that perform the exclusive operation so that the other is closed when one is open are indicated by hatching one symbol for convenience. The notation is the same in other drawings.

  In the above configuration, when the path opening / closing means 10b of the circulation path 4 is opened and the path opening / closing means 10a of the regeneration exhaust path 9 is closed, the indoor air is sucked into the air supply fan 1 and the circulation path 4 At this time, volatile organic compounds (VOC) such as formaldehyde (HCHO) contained in the air are adsorbed and removed by the adsorption filter 7 in the air purification unit 8. On the other hand, indoor air is sucked into the exhaust fan 5 and exhausted to the outside through the exhaust path 6a, 6b, 6c from various places such as a bathroom, a washroom, and a toilet. In this way, normal operation of the circulation type ventilation system can be performed,

  When a predetermined time elapses in the above operation, the path opening / closing means 10b of the circulation path 4 is closed, the path opening / closing means 10a of the regenerative exhaust path 9 is opened, and the air purifying unit is reversed. The heating unit 11 is operated to regenerate the adsorption filter 7.

  By operating the heating means 11 to heat the adsorption filter 7, the volatile organic compound adsorbed on the adsorption filter 7 can be desorbed and regenerated. For example, when activated carbon is used as the adsorption filter 7, formaldehyde can be desorbed by heating the adsorption filter 7 to, for example, 220 degrees to 260 degrees. In this case, the temperature in the air purification unit 8 can be raised to a predetermined temperature by closing the path opening / closing means 10a and 10b and temporarily stopping the air flow.

  Volatile organic compounds desorbed from the adsorption filter 7 in the air purification unit 8 are sucked into the exhaust fan 5 of the exhaust path 6 via the regeneration exhaust path 9 and from the circulation path 4 on the upstream side of the air purification unit 8. It is discharged to the outdoors through the exhaust path 6 together with the room air.

  In this way, volatile organic compounds are discharged outdoors together with the ventilated room air. However, since the amount discharged is very small under the outdoor environment, the volatile organic compounds are exhausted by the ventilated room air. Discharging in a diluted state has virtually no impact on the environment.

  Next, FIG. 2 shows a second embodiment of the circulation type ventilation system of the present invention. In this embodiment, in addition to the components in the first embodiment, the path opening / closing means 13a is provided in the exhaust path 6a from the bathroom, and the bathroom water vapor supply path 14 from the upstream side to the air purification unit 8 is configured. The bathroom steam supply path 14 is additionally provided with a steam supply means having a path opening / closing means 13b. For this reason, the same code | symbol is attached | subjected to the component which is common in 1st Embodiment, and the overlapping description is abbreviate | omitted.

  In the above configuration, the path opening / closing means 10b of the circulation path 4 and the path opening / closing means 13a of the exhaust path 6a are opened, and the path opening / closing means 10a of the regeneration exhaust path 9 and the path opening / closing means 13b of the bathroom water vapor supply path 14 are closed. In the state, indoor air is sucked into the air supply fan 1 and flows through the circulation path 4. At this time, volatile organic compounds (VOC) such as formaldehyde (HCHO) contained in the air are adsorbed in the air purification unit 8. It is adsorbed by the filter 7 and removed. On the other hand, indoor air is sucked into the exhaust fan 5 and exhausted to the outside through the exhaust path 6a, 6b, 6c from various places such as a bathroom, a washroom, and a toilet. In this way, normal operation of the circulation type ventilation system can be performed,

  When a predetermined time elapses in the above operation, the path opening / closing means 10b of the circulation path 4 and the path opening / closing means 13a of the exhaust path 6a are closed and the path opening / closing means 10a of the regenerative exhaust path 9 is reverse to the above operation. Then, the path opening / closing means 13b of the bathroom water vapor supply path 14 is opened, and the heating means 11 of the air purification unit 8 is operated to regenerate the adsorption filter 7.

  In this regeneration operation, the volatile organic compound desorbed from the adsorption filter 7 in the air purification unit 8 is sucked into the exhaust fan 5 of the exhaust path 6 via the regeneration exhaust path 9 and upstream of the air purification unit 8. And the indoor air from the bathroom water vapor supply path 14 are discharged to the outside through the exhaust path 6.

  For example, if the above regeneration operation is performed after bathing, the indoor air supplied to the air purification unit 8 from the bathroom water vapor supply path 14 contains a large amount of water vapor. Activation can be performed.

  In the initial stage of the regeneration operation, if the path opening / closing means 13b of the bathroom water vapor supply path 14 is closed, only the room air through the circulation path 4 is supplied to the air purification unit 8, so that the regeneration operation is performed only by heating. Thereafter, the path opening / closing means 13b is opened, and the adsorption filter 7 can be activated using the water vapor in the bathroom as described above.

  In order to efficiently supply indoor air containing a large amount of water vapor in the bathroom to the air purification unit 8, a path opening / closing means can be provided in the circulation path 4 on the upstream side of the air purification unit 8.

Next, FIG. 3 shows a third embodiment of the circulation type ventilation system of the present invention. This third embodiment shows another embodiment of the water vapor supply means, and the same reference numerals are given to the same constituent elements as those in the first embodiment, and a duplicate description is omitted. .
That is, in this third embodiment, the water vapor supply means uses the water vapor condensing part 15 provided in the exhaust path 6a from the bathroom and the condensed water accumulated in the condensate water collecting part 16 below the water vapor condensing part 15 to the pump 17. The pressure is applied to the spraying section 19 provided in the air cleaning section 8 through the supply pipe 18 and sprayed. Further, on the upstream side of the pump 17, a condensate cleaning means 20 comprising a filter 20a and a deionizer 20b is provided. In the figure, reference numeral 21 is a makeup water supply unit having a ball tap function, and 22 is an overflow discharge pipe.

  In the third embodiment, a certain amount of water collected in the condensate pool 16 of the steam condensing unit 15 is cleaned by using condensed water of steam from the bathroom and makeup water from clean water and the like to clean the air. Since it sprays in the part 8, the water vapor | steam used for activation can be supplied stably.

Next, FIG. 4 shows a fourth embodiment of the circulation type ventilation system of the present invention.
As in the first embodiment, the circulation type ventilation system of this embodiment includes an air supply path 2 from the air supply fan 1 to the room, an outside air intake path 3 from the outside to the air supply fan 1, A circulation path 4 from the room to the air supply fan 1 and an exhaust path 6 from the room to the outside through the exhaust fan 5 are configured, and an air purification unit 8 equipped with an adsorption filter 7 is provided in the circulation path 4. The regenerator 23 to which the adsorption filter 7 can be attached is connected to the exhaust path 6 on the upstream side of the exhaust fan 5, and the air intake path 25 in which the path opening / closing means 24 is provided in the regenerator 23, and The heating means 11 is provided in 23. In addition, the thermostat 12 for temperature control is provided in the reproducing unit 23 as described above.

  In the above configuration, the path opening / closing means 24 of the air intake path 25 of the regeneration unit 23 is closed, and the indoor air is sucked into the air supply fan 1 in a state where the air is not exhausted through the regeneration unit 23. In this case, volatile organic compounds (VOC) such as formaldehyde (HCHO) contained in the air are adsorbed and removed by the adsorption filter 7 in the air purification unit 8. On the other hand, indoor air is sucked into the exhaust fan 5 and exhausted to the outside through the exhaust path 6a, 6b, 6c from various places such as a bathroom, a washroom, and a toilet. Thus, the normal operation of the circulation type ventilation system can be performed.

  In this operation, when time elapses, the adsorption filter 7 in the air purification unit 8 is taken out and attached to the regenerating unit 23, the path opening / closing means 24 of the air intake path 25 is opened, and the regenerating unit 23 is opened. The heating unit 11 is operated to regenerate the adsorption filter 7.

  In this operation, the first air supply path 2 extends from the air supply fan 1 to the indoor space, the outside air intake path 3 extends from the outdoor air to the air supply fan 1, and the exhaust air path 6 extends from the indoor space to the outdoor via the exhaust fan 5. The function as the seed ventilation equipment or the third kind ventilation equipment can be maintained. At this time, the indoor air can be circulated in a state in which the adsorption filter 7 is not attached to the air purification unit 8, or in a state in which another exchange adsorption filter is attached in some cases.

  At the same time, the regeneration unit 23 operates the heating means 11 to heat the adsorption filter 7 so that the volatile organic compound adsorbed on the adsorption filter 7 is desorbed and regenerated as described above. it can.

  Volatile organic compounds desorbed from the adsorption filter 7 in the regeneration unit 23 are sucked into the exhaust fan 5 of the exhaust path 5 and discharged to the outdoors through the exhaust path 6 together with the air from the air intake path 25. As described above, the air taken into the regeneration unit 23 from the air intake path 25 may be outside air or indoor air.

  As described above, the volatile organic compound generated during the regeneration has substantially no influence on the environment by being discharged in a state diluted with the outside air or the room air to be ventilated.

  Also in the fourth embodiment, it is possible to regenerate the adsorption filter 7 by activation by configuring the regenerator 23 with water vapor supply means as shown in the second or third embodiment. Become.

  The present invention is as described above, and it is possible to regenerate the adsorption filter while effectively utilizing the system resources of the circulation type ventilation system and maintaining the function as the circulation type ventilation system. Is highly available and has the following advantages.

  1. By periodically regenerating the adsorption filter, the adsorption rate of the adsorption filter can always be maintained at a high removal rate, and toxic substances such as volatile organic compounds can be effectively removed. it can.

  2. By reusing the adsorption filter using an adsorbent such as activated carbon, zeolite, or carbon-based ceramic, it is possible to realize a system that is friendly to the global environment without wasteful waste.

  3. By regenerating and using the adsorption filter, it is possible to greatly extend the period until replacement, and to reduce the user's economic burden. For example, as described above, in the fourth embodiment, even when another replacement adsorption filter is used, the period until the replacement of each adsorption filter can be greatly extended, so that the user's economy is also improved. Burden can be reduced.

It is system | strain explanatory drawing which shows the 1st Embodiment of this invention. It is system | strain explanatory drawing which shows the 2nd Embodiment of this invention. It is system | strain explanatory drawing of the principal part which shows the 3rd Embodiment of this invention. It is system | strain explanatory drawing which shows the 4th Embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Air supply fan 2 Air supply path 3 Outside air intake path 4 Circulation path 5 Exhaust fan 6 (6a, 6b, 6c) Exhaust path 7 Adsorption filter 8 Air purification part 9 Regenerative exhaust path 10a, 10b Path | route opening / closing means (motor damper etc. )
11 Heating means (seeds heater)
12 Thermostats 13a, 13b Path opening / closing means (motor damper, etc.)
14 Bathroom water vapor supply path 15 Water vapor condensing part 16 Condensed water pool part 17 Pump 18 Supply pipe 19 Spraying part 20 Cleaning means 20a Filter 20b Purifier 21 Supply water supply part 22 Overflow discharge pipe 23 Regenerating part 24 Path opening / closing means (motor damper) etc)
25 Air intake route

Claims (6)

An air supply path from the air supply fan to the room, an outside air intake path from the outside to the air supply fan, a circulation path from the room to the air supply fan, and an exhaust path from the room to the outside via the exhaust fan are configured. In the circulation type ventilation system, an air purification unit having an adsorption filter is provided in the circulation path, and a regeneration exhaust path from the downstream side of the air purification unit to the upstream side of the exhaust fan of the exhaust path is configured. A circulation type ventilation system, characterized in that a path opening / closing means is provided on the downstream side of the air purification section of the circulation path, and an adsorption filter heating means is provided in the air purification section. An air supply path from the air supply fan to the room, an outside air intake path from the outside to the air supply fan, a circulation path from the room to the air supply fan, and an exhaust path from the room to the outside via the exhaust fan are configured. In the circulation type ventilation system, an air purifying unit with an adsorption filter is provided in the circulation path, a regeneration unit to which the adsorption filter can be attached is connected to the exhaust path upstream of the exhaust fan, and a path opening / closing means is provided in the regeneration unit. A circulation type ventilation system which constitutes the provided air intake path and is provided with heating means in the regenerating part. The circulation type ventilation system according to claim 1, wherein a water vapor supply means for supplying water vapor to the air purification unit is configured. The circulation type ventilation system according to claim 2, wherein a water vapor supply means for supplying water vapor to the regeneration unit is configured. The steam supply means is composed of a path opening / closing means provided in the exhaust path from the bathroom and a bathroom steam supply path from the upstream side to the air purification unit, and the path opening / closing means is provided in the bathroom steam supply path. The circulatory ventilation system according to claim 3 or 4. The steam supply means is configured to spray from a steam condensing part provided in the exhaust path from the bathroom, a cleaning means for purifying the condensed water, and a spraying part provided in the air purification part by pressurizing the purified condensed water. The circulation type ventilation system according to claim 3 or 4, wherein

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