JP2010273871A - Dust collecting air-conditioning system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a dust collecting air-conditioning system capable of treating contaminated air, discharged from a kitchen or the like, at a high efficiency in dust collection and by high bactericidal and deodorizing effects, and capable of utilizing the removed air with high-calorie for air conditioning. <P>SOLUTION: The air-conditioning system 1 mainly includes: a purification device 2 which takes in the contaminated air 4, removes fine particles 5, bacteria components 6, and odor components 7 from the contaminated air 4 by executing an electric dust collecting process, sterilizing process, and deodorizing process, and discharges the removed air 8 in the cleaned and dried state; and air-conditioning equipment 11 having a whole heat exchanger 10 for heat-exchanging between the removed air 8 and outside air 9. The purification device 2 includes a housing 15, a dust collecting sterilization part 16, a deodorizing part 17, and an air-current generating part 18. A plasma environment is created by corona discharge generated by a discharge part 31 of the dust collecting sterilization part 16, and charge of the fine particles 5 included in the contaminated air 4 and sterilization of the bacteria components 6 can be executed at the same time. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  TECHNICAL FIELD The present invention relates to a dust collection air conditioning system, and in particular, it has a composite function of four functions of dust collection, sterilization, deodorization, and energy saving, purifies high-heated polluted air, and then performs heat exchange processing. The present invention relates to a dust collection air conditioning system capable of performing

  Conventionally, polluted air containing suspended particulate matter (fine particles) such as oil mist, dust, oil smoke, and soot may be scattered in the atmosphere or in a factory room when manufacturing various products in a factory or the like. Among these suspended particulate matter, there are those that deteriorate the factory environment and directly affect the quality of the product, and those that have a risk of affecting the health of workers in the factory. In addition, when released into the atmosphere, there is a possibility that it will have a profound effect on the natural environment (global environment), such as the increase in acid rain due to the release of acidic substances and the effect of global warming due to the increase in carbon dioxide emissions It is included. Therefore, these polluted air is subjected to purification treatment (dust collection treatment) before releasing solid particulate or liquid suspended particulate matter to the atmosphere, etc. After being adjusted to a standard value or less, it is released into the atmosphere or the like. Further, in order to maintain a good factory environment, the factory air is forcibly ventilated and fresh outside air is always introduced indoors.

  On the other hand, in addition to discharging a large amount of suspended particulate matter as described above from one place, suspended particulate matter may be discharged in daily life. For example, exhaust gas discharged from automobiles contains gas components that affect the natural environment such as nitrogen oxides and carbon dioxide. In addition, oily smoke and kitchen odor generated during cooking are always discharged from commercial facilities such as restaurants. In particular, due to changes in dietary habits in recent years, there has been an increase in the number of fast food chains that are open late night or 24 hours a day, and there are cases where such smoke and soot spills all day long. The amount of air is enormous. However, the regulations on this are relatively relaxed compared to the above factories and the like, and strict emission standards were hardly stipulated. Here, polluted air such as oily smoke generated during cooking is generated when fried foods are fried, or customers roast food ingredients (meat, vegetables, etc.) with roasters installed in the audience seats at grilled meat shops etc. It contains smoke that is generated when That is, the temperature is relatively high (in other words, the amount of heat is high) and is in a high energy state as compared to contaminated air generated in a factory or the like. However, these high-calorie polluted air has been conventionally released to the atmosphere after simple dust collection processing such as filters, and high-caloric energy is wasted in the atmosphere. I was supposed to.

  In recent years, complaints from neighboring residents of the restaurant are increasing due to odor components contained in the contaminated air generated from these kitchens. For example, it is reported that about 70% or more of the odor components from these restaurants are caused by complaints about 20,000 bad odor pollution per year. Therefore, for restaurants, in order to prevent troubles between these neighboring residents, etc., after performing dust collection processing to remove oily smoke and deodorization processing to remove odor components from the polluted air to be discharged In many cases, measures to be released into the atmosphere were considered. Furthermore, in a large complex commercial facility that has been increasing in recent years, a large number of restaurants and the like are accumulated, and these exhausts cannot be discharged into the facility. For this reason, a large duct is installed in each restaurant, the contaminated air is sucked through the duct, deodorized, etc., and then discharged out of the facility from the rooftop. Therefore, the energy required for these emissions may be large.

  On the other hand, in commercial facilities such as restaurants and various manufacturing facilities such as factories, in addition to exhaust equipment that discharges polluted air, in order to improve the environment in the facility, the environment in the facility such as temperature and humidity Each has air conditioning equipment (air conditioners) to maintain. And exhaust equipment and air conditioning equipment are operated independently, respectively. In this case, in a store where a large amount of oily smoke is generated, such as a yakiniku restaurant, 30 to 60 million cubic meters of air is introduced from the outside air per year even in a relatively small store, and is released to the outside after heat exchange processing. Is going. As a result, ventilation processing is actually performed at a rate of about 15 times per hour, and these emissions tend to increase year by year.

  However, as described above, the devices (dust collectors, purification devices, etc.) related to the treatment for cleaning contaminated air containing suspended particulate matter and the air conditioning equipment for maintaining the environment in the facility are respectively There are few systems that are individually installed, and that integrates purification and air conditioning by linking both devices together. Here, even when oil mist or the like contained in the contaminated air is processed using a conventional filter type (filtration type) dust collector, the dust collection efficiency may not be so high. These dust collection efficiencies may gradually decrease depending on the dust collection time (the operation time of the dust collector). Therefore, there is a possibility that fine particles such as suspended particulate matter remain in the air discharged from the dust collector after long-time operation. Air conditioning equipment, on the other hand, is intended to capture relatively clean air in offices and the like, and most have only a simple filtration function such as an air permeable filter attached to the air inlet. there were. For this reason, processing the removed air with reduced dust collection efficiency directly connected to the air conditioning equipment may cause clogging of the filter, etc., or may cause failure or failure of the air conditioning equipment itself. In the past, such a system has never been performed.

  On the other hand, the polluted air discharged from the kitchen or the like often has a relatively high amount of heat due to heat during cooking as described above, and releasing it into the atmosphere as it is after the purification process wastes energy. Became. Furthermore, it has become one of the factors of the so-called “heat island phenomenon” which has become a problem in urban areas in recent years. For this reason, there are many voices expecting effective utilization of the heat quantity during air conditioning.

  Furthermore, in the contaminated air, various germs may be contained, and there is a possibility that a bad odor is generated by breeding these. For this reason, a system that can perform a sterilization treatment for killing such germs (bacterial components) and a deodorization treatment for removing odor components that cause bad odor has been expected.

  Therefore, in view of the above circumstances, the present invention collects, sterilizes, and deodorizes and removes high-calorie contaminated air containing suspended particulate matter generated from production facilities such as factories and commercial facilities such as restaurants. An object of the present invention is to provide a dust-collecting air conditioning system that can be used for air conditioning of facility air by effectively using the amount of heat of finished air.

  In order to solve the above-described problems, the dust collection air conditioning system of the present invention includes a housing having an air passage formed therein, an airflow generating means for generating an airflow in the air passage of the housing, and the airflow generated by the airflow generating means. A discharge means for charging fine particles contained in the contaminated air sucked into the housing using corona discharge, and an electric dust collecting means provided with a collecting means for collecting the charged fine particles using Coulomb force; , The polluted air or the particulate-removed air from which the particulates have been removed by the electrostatic dust collecting means is circulated in a plasma environment, and is provided on the downstream side of the plasma sterilizing means, and plasma sterilizing means for removing bacterial components, Deodorizing means for deodorizing odorous components contained in the sterilized air from which the bacterial components have been removed, provided on the downstream side of the deodorizing means, The odor has been removed already air is heat exchanged through the total heat exchanger, comprises a "air-conditioning unit for use in an air conditioner is mainly composed.

  Here, the electrostatic dust collecting means generates corona discharge by the discharging means and passes the contaminated air to be treated under corona discharge, thereby electrically charging the fine particles contained in the contaminated air, and further It is collected by a collecting means such as a plate which is electrically insulated and set to be a counter electrode. Here, the applicant of the present application has already filed a number of patent applications regarding the configuration of the electrostatic precipitator having these new structures (for example, see Patent Documents 1 to 3). As a result, the charged fine particles can be adsorbed by the action of the Coulomb force and collected electrically by the plate surface of the adsorption plate rotating about the rotation axis. The rotating adsorption plate causes the fine particles to uniformly adhere to the plate surface, and the action of Coulomb force can be prevented from being lowered due to local adhesion at one place. This makes it possible to maintain high dust collection efficiency over a long period of time, and clean air (removed air) that is free from the occurrence of defects with respect to the air conditioning means installed downstream of the electrostatic dust collection means. ) Can be sent. As a result, the electric dust collecting means and the air conditioning means can be directly connected.

  On the other hand, the plasma sterilization means is a stable plasma state in which substances are highly ionized, positively charged particles and negatively charged electrons are distributed in an ionized state, and the region as a whole is kept electrically neutral. By creating and passing contaminated air or the like through a plasma state region (in a plasma environment), bacterial components can be instantly killed by the plasma action. The plasma sterilizing means may be installed either upstream or downstream of the electrostatic dust collecting means, or integrally with the electrostatic dust collecting means (details will be described later). Here, for the generation of plasma, a well-known technique and configuration can be employed, and detailed description thereof is omitted here. For example, a high voltage is applied between the electrically opposed electrodes to create a glow discharge state. When the bacterial component passes through the highly ionized state of the substance, the bacterial component (microorganism) exposed to the high energy state is killed by an electrical action.

  In addition, the deodorizing means can employ a known method such as a combustion method, an adsorption method, a water scrubber method, a spray method, an ozone deodorization method, and the like to remove odor components. Here, when the adsorption method in which the odor component is adsorbed in the fine pores of the activated carbon is employed, the fine pores may be clogged with the odor component by continuing the deodorization treatment for a long period of time. As a result, the deodorizing performance decreases. For this reason, even if high dust collection efficiency and high sterilization performance can be obtained by the above electric dust collection means and plasma sterilization means, when the deodorization performance in the deodorization means provided on the downstream side is low, Further, it becomes difficult to supply clean air to the air conditioning means connected to the downstream side, which causes a failure. Therefore, it is necessary to use what has the performance which can maintain a deodorizing performance stably over a long period also about the said deodorizing means.

  Furthermore, the air conditioning means can use existing air conditioning equipment (air conditioners) that are generally used in each facility, and have been removed from the deodorizing means by the total heat exchanger. It can be used for air conditioning by exchanging heat between air and the air taken from outside. Since the process of the air conditioning means can use a well-known technique, a detailed description is omitted here. Here, most of the removed air is released into the atmosphere after the heat exchange process, but a part of it is rejoined with the outside air (supply air) after the heat exchange process and introduced into the air conditioning equipment body. The temperature is controlled in the facility. That is, it is possible to clean contaminated air such as oil smoke and circulate it again as room air.

  Therefore, according to the dust collection air conditioning system of the present invention, polluted air containing a large amount of solid or liquid suspended particulate matter (fine particles), such as oil mist, is removed by using the Coulomb force in the electric dust collection means. In the plasma environment, the bacterial components are killed, the odor components are removed by the deodorizing means, and the removed air having a high calorific value is heat-exchanged by the total heat exchanger so that it is circulated for use in air conditioning. Is possible. Thereby, it becomes possible to use the calorie | heat amount of the contaminated air which generate | occur | produced in the kitchen etc. for air conditioning, and can reduce the burden of an air conditioning means (equipment). Therefore, a complex dust collection air conditioning system having four functions of dust collection, sterilization, deodorization, and energy saving is constructed. In particular, by using electric dust collection means, high dust collection efficiency can be stably maintained over a long period of time. Therefore, purification devices (dust collection, sterilization and deodorizing functions) that have been difficult in the past and all A heat exchanger (heat exchange function) can be directly connected.

  Further, the dust collection air conditioning system according to the present invention has the above-described configuration. “The electric dust collection means and the plasma sterilization means are integrally formed, and the plasma environment is generated by the corona discharge that charges the fine particles. "It may be".

  Therefore, according to the dust collection air conditioning system of the present invention, the plasma environment is generated from the corona discharge generated by the discharge means of the electric dust collection means formed integrally with the plasma sterilization means. Therefore, it is possible to charge the microparticles in the polluted air and to sterilize the bacterial components contained in the polluted air (containing the microparticle-removed air) at almost the same timing as the charging using the action of plasma. . This makes it possible to compactly form a device that performs processing by charging and sterilization, and even if it is a restaurant or the like that enters a complex large commercial facility as a tenant, the dust collection air conditioning system of the present invention can be adopted. It becomes possible.

  Furthermore, the dust collection air conditioning system of the present invention has the above-mentioned configuration, “The plasma sterilization unit generates ozone gas having oxidative decomposability in the plasma environment, and the deodorization unit is located upstream of the air passage. It may be provided with a means for extending the life of the adsorption performance by using the ozone gas generated in step 1).

  Therefore, according to the dust-collecting air conditioning system of the present invention, the ozone gas generated in the plasma environment by the plasma sterilizing means is used, and the life of the deodorizing means (particularly, the deodorizing material) is extended by the oxidative decomposition performance of the ozone gas. be able to. That is, in a plasma environment, ozone gas is usually generated in a state where the substance is highly ionized. Such ozone gas reaches the deodorizing means on the downstream side together with the sterilized air in which the bacterial component has been killed. At this time, in the case where activated carbon is used as the deodorizing material and the odorous component is adsorbed in the fine pores to deodorize, the odorous component is oxidized and decomposed by the ozone gas that has reached the fine pores of the deodorizing material. Therefore, the deodorization performance by adsorption of activated carbon or the like and the oxidative decomposition performance of ozone gas produce a synergistic effect (synergy effect), and the possibility that an odor component is adsorbed in the micropores of the deodorization material is reduced. As a result, the life of the deodorizing means can be extended.

  Furthermore, in addition to the above configuration, the dust collection air conditioning system of the present invention may include “the electric dust collection means includes a cleaning means for cleaning the fine particles attached to the suction plate”.

  Therefore, according to the dust collection air conditioning system of the present invention, the cleaning means for washing the adsorption plate on which the particulates are collected reduces the operation stop time of the electric dust collection means as much as possible, and stable contaminated air A purification process can be performed.

  Furthermore, in addition to the above configuration, the dust collection air conditioning system of the present invention may be “treating the contaminated air having a high calorific value including oil smoke and cooking odor generated from a kitchen facility or a passenger seat of a restaurant” as a target. I do not care.

  Therefore, according to the purification environment system of the present invention, it is possible to target polluted air discharged from a kitchen facility of a restaurant. As a result, the contaminated air containing oil smoke and kitchen odor can be processed and discharged into the atmosphere, and the amount of heat of the contaminated air can be circulated and used for air conditioning in the restaurant facility. This makes it possible to remove contaminated air and exhaust air from one restaurant, and use it in an air conditioning facility.

  As an effect of the present invention, by carrying out each function of dust collection, sterilization, deodorization, and energy saving step by step, particularly, contaminated air having a high calorific value is effectively treated, and air conditioning is performed in a high calorific state. It becomes possible to perform the process concerning. As a result, it is possible to circulate in an air-conditioning manner using contaminated air even in a restaurant or the like that has conventionally only been discharged, thereby saving energy. In particular, the present invention relates to an electric dust collecting means capable of maintaining high dust collection performance for a long time, and a deodorizing means capable of maintaining adsorption performance of a deodorizing material for a long time using ozone gas generated by plasma sterilization means. By configuring in order, it is possible to efficiently remove fine particles, bacterial components, and odor components of contaminated air. As a result, there is no possibility that the total heat exchanger of the downstream heat exchanging means will break down, and stable processing becomes possible.

It is explanatory drawing which shows schematic structure of the dust collection air conditioning system of this embodiment. It is expansion explanatory drawing which shows the structure of the purification apparatus dust collection sterilization part. It is a graph which shows each data of (a) the dust collection efficiency of a soot particle, (b) soot particle number, and (c) odor density | concentration by a purification apparatus.

  Hereinafter, a dust-collecting air conditioning system 1 (hereinafter simply referred to as “conditioning system 1”) according to an embodiment of the present invention will be described with reference to FIGS. 1 to 3. Here, FIG. 1 is explanatory drawing which shows schematic structure of the harmony system 1 of this embodiment, FIG. 2 is expanded explanatory drawing which shows the structure of the dust collection sterilization part 16 of a purification apparatus, FIG. It is a chart which shows each data of (a) dust collection efficiency of smoke particles by (b) number of smoke particles, and (c) odor concentration. Here, the harmony system 1 of this embodiment is mainly installed in restaurants and the like, processes the contaminated air 4 including oil smoke and kitchen odor generated from the kitchen during cooking, and is used for air conditioning in the restaurant Let us exemplify what to do.

  As shown mainly in FIGS. 1 and 2, the harmony system 1 of the present embodiment draws in contaminated air 4 containing oily smoke and odor components generated in a restaurant kitchen, and uses corona discharge. Electric dust collection treatment, sterilization treatment using plasma sterilization, and deodorization treatment using a deodorizing material having an adsorptive property and a long life are sequentially performed, and from the contaminated air 4, solid or liquid fine particles 5, bacteria The purifying device 2 capable of removing the component 6 and the odorous component 7 respectively, purifying the exhausted air 8 in a dry state, and discharging the removed air 8 downstream of the purifying device 2. And a total heat exchanger 10 that performs a heat exchange process between the amount of heat of the removed removed air 8 discharged and the outside air 9 taken from the outside, and the outside air 9 and the removed air after the heat exchange process. 8 part of the air (circulation sky 8a) utilizing, it is mainly configured by including an air-conditioning plant 11 for carrying out the air conditioning of the adjustment of the room temperature of the restaurants and the like. Here, the purifying device 2 corresponds to a configuration in which the functions of the electric dust collecting means, the plasma sterilizing means, and the deodorizing means in the present invention are achieved, while the air conditioning equipment 11 including the total heat exchanger 10 is the air in the present invention. It corresponds to a harmony means.

  More specifically, as shown in FIGS. 1 and 2, the purification device 2 has been subjected to purification treatment with an intake port 12 for intake of contaminated air 4 containing a large amount of particulates 5 etc. discharged from a kitchen or the like. A substantially rectangular parallelepiped stainless steel housing 15 having an exhaust port 13 for discharging the removed air 8 and having an air passage 14 communicating with the intake port 12 and the exhaust port 13, and upstream of the housing 15 The dust collection sterilization unit 16 provided so as to substantially close the air passage 14 on the side (the intake port 12 side) and the downstream side of the housing 15 (downstream of the dust collection sterilization unit 16 and in the vicinity of the exhaust port 13) ) And a deodorizing portion 17 provided with a deodorizing material so as to substantially block the air passage 14.

  Further, the air flow generation unit 18 for generating an air flow (air flow) in the air passage 14 so that the contaminated air 4 sucked from the air inlet 12 flows through the air passage 14 in the housing 15. It has a configuration. Here, the airflow generation unit 18 is provided in parallel with the exhaust port 13 on the downstream side of the deodorization unit 17, and uses a rotary fan 19 protruding into the air passage 14, and a part of the airflow generation unit 18 protrudes to the side of the housing 15. By using the rotational driving force of the motor 20 and rotating the rotary fan 19 at a high speed, an air flow can be generated in the air passage 14. Here, the housing 15 and the airflow generation unit 18 (airflow generation means) are formed as one component of the electric dust collection means of the purification device 2, and include the plasma sterilization means and the deodorization means therein, and are integrally formed. ing. The functions of the electrostatic dust collecting means, the plasma sterilizing means, and the deodorizing means may be formed as individual devices, and these may be sequentially connected. It must be done after processing.

  The dust collection and sterilization unit 16 lies horizontally across the width direction of the air passage 14 (corresponding to the front and rear direction in FIG. 1 and FIG. 2), and is supported by a substantially rod-shaped suction shaft 21 that is rotatably supported. And a plurality of disk-shaped suction plates 23 installed so that the center of the suction shaft 21 penetrates in a state where they are opposed to each other at a predetermined interval, and a suction shaft pivotally supported by the housing 15 Rotating motor (not shown) is connected to one shaft end of 21 via a drive transmission mechanism (not shown) such as a gear, and generates a rotational force capable of rotating all the suction plates 23 in cooperation with the suction shaft 21. A pair of collecting portions 24 (corresponding to the collecting means) and a pair that are horizontally insulated across the width direction of the air passage 14 while being electrically insulated from the collecting portions 24 and supply a discharge voltage. Discharge shaft 25a and charged plate A plurality of charged plates having a substantially rectangular shape instructed by the holding shaft 25b inserted between the suction plates 23 in a state where the discharge surface 26 is close to the suction surface 22 of the suction plate 23. 27, and a discharge part 31 (corresponding to a discharge means) having a plurality of discharge electrode parts 30 in which sharp end parts 29 at the front end part project radially from the inlet-facing edge 28 of the charge plate 27 toward the inlet 12 A discharge voltage supply unit (not shown) that is electrically connected to the discharge shaft 25a of the discharge unit 31 and can generate a corona discharge due to a high voltage from the sharp end portion 29; Connected to the injection nozzle 34 and the injection nozzle 34 which are provided and are arranged with the cleaning liquid 32 sprayed on the suction surface 22 of the suction plate 23 so that the spray port 33 can be sprayed. The supply hose 35 for supplying the cleaning liquid 32, the cleaning liquid tank 36 for temporarily storing the cleaning liquid 32 to be sprayed, and the stored cleaning liquid 32 are supplied to the injection nozzle 34, and the air pressure is supplied. An adsorption surface cleaning unit 38 (corresponding to a cleaning means) having an air pump 37 for spraying using, an air flow generation unit 18, a collection unit 31, a discharge unit 31, an adsorption surface cleaning unit 38, etc. And a control unit (not shown) for controlling each component.

  In addition, the discharge part 31 in the dust collection sterilization part 16 can generate a corona discharge, and a plasma environment is created in the air passage 14 by the high voltage corona discharge. Therefore, the contaminated air 4 passing through the air passage 14 can be sterilized with the bacterial component 6 by plasma simultaneously with the charging of the fine particles 5. That is, the dust collection sterilization part 16 (especially the discharge part 31) has a function as a plasma sterilization means in this invention, and can exhibit the sterilization effect with respect to the contaminated air 4. FIG.

  Further, a deodorizing unit 17 is installed on the downstream side of the dust collecting and sterilizing unit 16 in a state where the air passage 14 is substantially closed. Specifically, in order to remove the odor component 7 contained in the sterilized air 39 that has passed through the dust collection sterilization unit 16 and has been subjected to the electric dust collection process and the sterilization process, the deodorization unit 17 has a honeycomb structure. It is mainly constituted by a deodorizing material mainly composed of activated carbon having fine pores. Here, the deodorizing unit 17 can be used as a catalyst filter having a honeycomb structure of, for example, 100 mm × 100 mm × 200 mm, and the odorous component 7 is almost filled with a 200 mm thick filter in the fine pores of the activated carbon. Can be adsorbed. The plasma environment is generated by the corona discharge generated by the discharge unit 31 of the upstream dust collection sterilization unit 16, so that ozone gas 40 is generated at the same time, and the ozone gas 40 is guided to the deodorization unit 17 along the air flow. It will be. And this ozone gas 40 adsorb | sucks to the micropore of activated carbon. Here, when the ozone gas 40 having oxidative decomposability reaches the fine pores, the adsorbed odor component 7 can be decomposed by a chemical action. As a result, the deodorizing unit 17 is less likely to be clogged due to the adsorption of the odorous component 7 in the micropores, and can maintain good deodorizing performance over a long period of time. Can do.

  Further, as shown in FIG. 1 and the like, the air conditioning equipment 11 is connected to the total heat exchanger 10 via the exhaust port 13 and the outlet pipe 3 of the purification device 2 and introduced from the outside by the total heat exchanger 10. A heat exchange process is performed between the outside air 9 and the removed air 8 sent out from the exhaust port 13, and then the removed air 8 is mainly discharged to the outside (atmosphere) as exhaust gas. On the other hand, the outside air 9 after heat exchange processing introduced from the outside is introduced into the air conditioning main body 41 and used for air conditioning in a restaurant room. A part of the removed air 8 after the heat exchange process that is released to the atmosphere merges with the processed air 9 and is introduced into the air conditioning body 41.

  Next, an example of the purification process of the contaminated air 4 and the air conditioning process using the conditioning system 1 of the present embodiment will be specifically described. First, the purification device 2 and the air conditioning equipment 11 are operated, and the driving motor 20 of the airflow generation unit 18 is driven by the control unit. Thereby, the rotary fan 19 in the air passage 14 connected to the drive motor 20 rotates at high speed. As a result, an air flow (airflow) is generated in the air passage 14. Due to the generation of the air flow, a force for sucking the surrounding contaminated air 4 from the air inlet 12 of the purification device 2 acts. As a result, the contaminated air 4 is taken into the air passage 14 of the housing 15.

  At this time, in the vicinity of the air inlet 12, discharge electrode portions 30 having a plurality of sharp end portions 29 are provided radially on the air inlet facing edge 28 of the charging plate 27. A corona discharge is generated by supplying a high voltage from a discharge voltage supply unit connected to the discharge electrode unit 30. That is, the contaminated air 4 sucked from the intake port 12 is irradiated with the corona discharge. The fine particles 5 made of solid or liquid suspended particulate matter such as oily smoke or dust contained in the contaminated air 4 that has been irradiated with corona discharge are charged. And it will adsorb | suck by the Coulomb force to the adsorption | suction surface 22 of the adsorption | suction plate 23 which becomes an electrically counter electrode. At this time, between each adsorption plate 23, a charged plate 27 that is set to be electrically isotope with the charged fine particles 5 is inserted. Therefore, the fine particles 5 that are close to the charged plate 27 are repelled by the Coulomb force and are forcibly sent to the suction plate 23 side. For this reason, it is surely collected by the suction plate 23.

  Here, the corona discharge generated by the discharge unit 31 is a discharge phenomenon due to a high voltage. Therefore, in the region of corona discharge, the substance is highly ionized, and an electrically neutral plasma state (plasma environment) due to positive charges and negative charges is created. Thereby, it acts as plasma sterilization which kills the bacterial component 6 contained in the contaminated air 4 together with the charge of the fine particles 5 described above. As a result, the contaminated air 4 is sterilized. That is, the sterilized air 39 from which the fine particles 5 and the bacterial component 6 have been removed is generated by the dust collection and sterilization unit 16. In the case of the present embodiment, the sterilization process is performed at the moment of receiving the corona discharge, and then collected on the rotating suction plate 23. Therefore, the electric dust collection process is performed after the sterilization process, but the order may be any.

  The dust collection sterilization unit 16 in the purification device 2 of the present embodiment is provided with a suction surface cleaning unit 38 that cleans the suction surface 22 of the suction plate 23 on which the fine particles 5 have been absorbed. Here, since the charged microparticles 5 are collected by using Coulomb force, the higher the potential difference between the charged microparticles 5 and the suction plate 23 (suction surface 22), the higher the adsorption performance. Is natural. However, by collecting over a long period of time, the fine particles 5 collected on the adsorption surface 22 may stick, and this may deteriorate the collection performance on the adsorption surface 22 as an insulating substance.

  Therefore, a cleaning process is performed using the suction surface cleaning unit 38. An example of the cleaning method will be described. Hot water of about 40 ° C. is charged into the cleaning liquid tank 36, and an appropriate amount of cleaning agent is charged so that the cleaning liquid 32 has a concentration of 1%. Then, by switching on the supply pump 37 via the control unit, the predetermined liquid is supplied from the injection nozzle 34 which is installed in the upper part of the air passage 14 and the injection port 33 is directed to each adsorption plate 23. An amount (for example, about 24 liters / minute) of the cleaning liquid 32 is sprayed for a predetermined time (for example, 30 minutes). At this time, the suction plate 23 rotates the shaft according to the suction shaft 21 by a rotation motor. As a result, the cleaning liquid 32 is evenly sprayed onto the suction surface 22. Thereafter, after the spraying of the cleaning liquid 32 is stopped, the shaft rotation of the suction plate 23 is continued for 5 minutes. Accordingly, the cleaning liquid 32 and the fine particles 5 on the adsorption surface 22 are scattered from the plate end of the adsorption plate 23 to the air passage 14 by centrifugal force. As a result, the suction surface 22 is cleaned. The cleaning liquid 32 scattered in the air passage 14 and the fine particles 5 containing a large amount of liquid components fall to the passage bottom (not shown) of the air passage 14 due to their own weight, and then the outside of the housing 15 through the drain (not shown). To be released. Therefore, the cleaning liquid 32 and the like related to the deodorizing unit 17 does not reach.

  Then, the air passage 14 and the dust collection sterilization unit 16 in the housing 15 are dried. Further, a warm-up operation is performed to apply a high voltage to the discharge electrode portion 30 of the discharge portion 31. Thereby, the cleaning liquid 32 remaining in the collection unit 24 and the discharge unit 31 can be dried by the corona discharge by temporarily generating a high pressure state by the corona discharge. This completes the cleaning. In this case, the process from spraying the cleaning liquid 32 to completion of the warm-up operation is completed in about 44 minutes. Therefore, for example, after 24 hours of operation, by performing the above-described cleaning operation, it is possible to always maintain a high dust collection efficiency over a long period of time.

  Thereafter, the sterilized air 39 reaches the deodorizing unit 17 together with a part of the ozone gas 40 generated when the plasma environment is created. Thereby, the odor component 7 in the sterilized air 39 is adsorbed by the deodorization part 17 and deodorized. In addition, since the effect | action using the oxidative decomposition property by the ozone gas 40 was already demonstrated, description is abbreviate | omitted here. Thereby, a deodorizing process can be performed for a long time, without the adsorption | suction performance of the deodorizing part 17 falling. As a result, the particulates 5 and the bacterial component 6 in the contaminated air 4 can be almost completely removed on the upstream side of the purification device 2, and the odor component 7 can be removed by the deodorizing unit 17. Therefore, the removed air 8 discharged from the exhaust port 2 of the purification device 2 has a sufficiently high cleanliness that can be introduced into the total heat exchanger 10 further downstream.

  About the dust collection efficiency and deodorizing performance of the purification apparatus 2 in the harmony system 1 of this embodiment, the specific example at the time of processing soot of a cherry chip is demonstrated. According to this, the smoke concentration (inlet concentration) near the intake port 12 and the smoke concentration (outlet concentration) near the exhaust port 13 were measured using a piezo balance dust meter (manufactured by KANOMAX). Shown in (a). According to this, as a result of six measurements, the dust collection efficiency was 99.84% on average, which was very high. Furthermore, as a result of measuring the number of soot particles using a particle counter (MODEL 3886: manufactured by KANOMAX), a soot particle size of 0.3 μm was found to exist at 35.15,000 / cubic meter at the inlet load. After dust collection processing, 56183 particles / cubic meter and 0.5 μm smoke particle size were present at 18,307,000 particles / cubic meter at the inlet load, but after dust collection processing played 29290 particles / cubic meter It was confirmed that it decreased (refer FIG.3 (b)). Furthermore, as a result of measuring the odor concentration using an odor sensor (manufactured by New Cosmos Electric Co., Ltd.), the odor concentration after deodorization showed “188”, which greatly cleared the target value of 300 or less (see FIG. 3C). ). Thereby, it was shown that the purification apparatus 2 in this embodiment has the outstanding dust collection efficiency and deodorizing performance. In particular, the adsorption surface cleaning unit 38 can be cleaned and restarted in a short time, the operation stop time of the purification device 2 can be shortened, and by using the ozone gas 40 generated in the plasma environment, the deodorizing unit The adsorption performance of 17 deodorizing materials can be extended. Therefore, it is understood that it is particularly preferable to employ the purification device 2 in the present embodiment in a place where it is necessary to operate the purification device 2 for a long period of time such as a 24-hour restaurant.

  Here, the contaminated air 4 containing the oily smoke generated from the kitchen or the like is in a relatively high temperature state and still has a high amount of heat even after the above treatments. Therefore, in order to effectively use the amount of heat, the system 2 of the present embodiment introduces the removed air 8 into the total heat exchanger 10 of the air conditioning equipment 11. The total heat exchanger 10 is used in existing air conditioning equipment and the like.

  As a result, the removed air 8 purified by the purification device 2 is subjected to heat exchange processing through the total heat exchanger 10, so that indoor air conditioning is performed via the air conditioning body 41. As a result, energy that has conventionally been released (the amount of heat of the contaminated air 4) is not wasted and can be used to improve the indoor environment. As shown in FIG. 1, the removed air 8 processed by the total heat exchanger 10 joins the heat-exchanged air and is introduced into the air-conditioning body 41 even if it is discharged as it is outside the room. Alternatively, it may be discharged into the room as it is (see broken line arrow in FIG. 1).

  As described above, according to the harmony system 1 of the present embodiment, the purification device 2 maintains high dust collection efficiency over a long period of time, performs plasma sterilization treatment, and utilizes the ozone gas 40 generated in the plasma environment. By extending the adsorption performance of the deodorizing material, it is possible to stably generate the removed air 8 having a high degree of cleanliness and to perform heat exchange using the removed air 8 having a higher amount of heat. As a result, the indoor environment in restaurants and the like can be improved satisfactorily.

  That is, in recent kitchens of restaurants, etc., the purifier 2 and the indoor air-conditioning equipment are installed separately, and there has been no connection between the two, and there has been no improvement. It is possible to reduce carbon emissions. Furthermore, in the case of a yakiniku restaurant or the like, a smokeless roaster or the like is installed for each seat, and each has a heat source that can be maintained at several hundred degrees Celsius for cooking meat and the like. In order to prevent the diffusion of oily smoke and odors from the source, contaminated air 4 such as high-temperature oily smoke is forcibly sucked by the suction fan together with the air around the roaster. That is, hot air (hot air) that is much hotter than the hot air temperature (in the case of heating) supplied by the air conditioning equipment that is discharged to maintain the indoor environment is sucked and exhausted to the outside air after a predetermined treatment. Is going to do. In particular, during the winter season, air that is warmer than the set temperature in the store is constantly exhausted. Therefore, it is possible to effectively supply such heat quantity by the harmony system 1 of the present embodiment, and it is possible to reduce power consumption and contribute to environmental measures.

  On the other hand, even if the target is a large factory space such as a machining factory for manufacturing products, the above-described effects can be enjoyed. That is, during machining, various additives such as mineral oil cutting oil and water-soluble lubricant additives, rust preventives, preservatives, etc. may be used. May be floating. For this reason, although measures such as locally suppressing the occurrence of such measures have been taken, there have been cases where the effect on the cost of the measures has not increased much. Furthermore, the factory air was sometimes ventilated, and it could be said that a large amount of carbon dioxide was flowing down. Therefore, by adopting the harmony system 1 of the present invention, it is possible to make a great contribution to environmental measures.

  The present invention has been described with reference to preferred embodiments. However, the present invention is not limited to these embodiments, and various modifications can be made without departing from the spirit of the present invention as described below. And design changes are possible.

  That is, in the harmony system 1 of the present embodiment, the one that uses the purification device 2 that is integrally formed to perform each process of electrostatic dust collection, sterilization, and deodorization is shown, but the present invention is not limited to this. Alternatively, the configuration for performing each process may be constructed separately. However, when installing in a small-scale space such as a restaurant, it is preferable to make the occupied space of the space as small as possible. Therefore, as shown in the embodiment, the compact purifier 2 is integrally constructed. Is preferred.

  Furthermore, although the plasma sterilization means using the corona discharge of the electric dust collection means has been shown, the present invention is not limited to this, and other techniques capable of generating a plasma environment can also be used. At this time, either the plasma sterilization means or the electrostatic dust collection means may be first. However, in order to reduce the contamination in the air passage 14 as much as possible, it may be preferable to perform the charging first or to perform the charging and sterilization at the same time.

  In addition, in the purification apparatus 2, the use of the deodorizing unit 17 having a honeycomb structure having a catalytic action using activated carbon as a deodorizing material has been described. However, the present invention is not limited to this, and other known deodorizing means is employed. You can also

1 Harmonization system (dust collection air conditioning system)
2 Purification device 4 Contaminated air 5 Fine particles 6 Bacterial component 7 Odor component 8 Removed air 8a Circulating air 9 Outside air 10 Total heat exchanger 11 Air conditioning equipment (air conditioning means)
16 Dust collection sterilization unit (electric dust collection means, plasma sterilization means)
17 Deodorization part (deodorization means)
18 Airflow generator (Airflow generator)
20 Drive motor (airflow generating means)
23 Adsorption plate 24 Collection part (collection means)
27 Charge plate 31 Discharge part (discharge means)
38 Suction surface cleaning section (cleaning means)
39 Sterilized air 40 Ozone gas

International Publication No. 2005/084813 International Publication No. 2006/134627 JP 2008-142670 A

Claims (5)

A housing in which an air passage is formed, an airflow generating means for generating an airflow in the air passage of the housing, and particulates contained in contaminated air sucked into the housing by the generated airflow using corona discharge An electric dust collecting means comprising a discharging means for charging, and a collecting means for collecting the charged fine particles using Coulomb force;
Plasma sterilization means for circulating the particulate-removed air from which the particulates have been removed by the contaminated air or the electric dust collection means in a plasma environment to remove bacterial components;
A deodorizing means provided on the downstream side of the plasma sterilizing means, for deodorizing odor components contained in the sterilized air from which the bacterial components have been removed;
Dust-collecting air provided on the downstream side of the deodorizing means, and having air-conditioning means for exchanging heat through the total heat exchanger and removing air from which the odor components have been deodorized. Harmony system. The electric dust collection means and the plasma sterilization means are:
Integrally formed,
The dust collection air conditioning system according to claim 1, wherein the plasma environment is generated by the corona discharge that charges the fine particles. The plasma sterilization means includes
Generating ozone gas having oxidative decomposability in the plasma environment,
The deodorizing means is
The dust-collecting air conditioning system according to claim 1 or 2, further comprising means for extending the life of the adsorption performance by using the ozone gas generated on the upstream side of the air passage. . The electric dust collecting means is
The dust collection air conditioning system according to any one of claims 1 to 3, further comprising a cleaning unit that cleans the fine particles adhering to the adsorption plate. The dust-collecting air according to any one of claims 1 to 4, wherein the polluted air having high heat quantity including oil smoke and cooking odor generated from a kitchen facility or a passenger seat of a restaurant is treated as a target. Harmony system.

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