JP4336890B2 - Air purification device - Google Patents

Description

  The present invention relates to an air purification device that can also clean contaminated air containing impurities such as oil, and more specifically, an air purification device that removes impurities by forcibly introducing contaminated air and allowing it to pass underwater. About.

  In the air purifying apparatus, one that purifies by using a filtering material such as paper or a wet cloth filter is generally used. However, if the polluted air is a large amount of flue gas containing a large amount of impurities such as oil, for example, a large amount of flue gas generated from a frying food cooker, a large amount of oil or the like adheres to the filter material at an early stage. Had to be replaced frequently and was difficult to use. Therefore, a flue gas treatment device that collects the polluted air and exhausts it outdoors is generally used for the polluted air such as the flue gas. However, a large amount of impurities such as vaporized oil, evaporated water, and dust contained in the flue gas, which is contaminated air, adhere to each part, especially in the exhaust duct, causing unsanitary fires and spreading fire. There are problems such as spreading odors outdoors and polluting the surrounding environment.

  Therefore, various types of flue gas treatment devices have been proposed as air purifiers that remove oil by forcibly introducing and passing it into water and bringing it into contact with water in order to remove oil from the flue gas. Has been. For example, a water hood provided in a range hood (see Patent Document 1), an intake chamber and a flue gas treatment chamber communicated, and water is stored in the bottom (see Patent Document 2), and the bottom is formed of a perforated plate There is a liquid tank provided below the cylindrical frame (see Patent Document 3).

  A smoke evacuation treatment device with a water storage tank in the range hood is generated in the kitchen by providing an introduction passage for introducing the smoke into the water storage tank and making the upper space of the water storage tank negative with a ventilation fan installed in the exhaust duct. The exhausted smoke is sucked into the water storage tank and allowed to pass through the water.

  The exhaust gas processing apparatus that communicates with the intake chamber and the exhaust gas processing chamber and stores water at the bottom is provided with the intake chamber in communication with the exhaust gas introduction cylinder, and the exhaust gas processing chamber communicates with the intake chamber and the air exhaust port. A gate plate having a plurality of communication ports formed at a position lower than the water level of the stored water is provided so that each bottom side communicates between the intake chamber and the exhaust gas treatment chamber, and the exhaust chamber side is provided in the exhaust gas treatment chamber. A demister, a shielding plate, and two grease filters are provided in order from the air outlet to the air outlet, and a partition plate is provided at a lower portion of the demister and a lower portion of the grease filter with a gap from the bottom plate of the smoke treatment chamber. A swing plate is provided in the lower part, and a cooling water injection nozzle for injecting cooling water to the demister is provided. In this smoke exhausting treatment device, the smoke exhausting treatment chamber and the intake chamber become negative pressure due to the operation of the blower provided at the air exhaust port, so that the exhaust gas is sucked into the intake chamber from the smoke introduction pipe, It passes through the processing chamber and is exhausted from the air exhaust port. That is, the flue gas introduced into the intake chamber passes through the communication port of the gate plate and is sucked into the flue gas treatment chamber. The flue gas introduced into the flue gas treatment chamber is cooled by sprayed cooling water from the cooling water jet nozzle, and partly passes through the gap between the swing plate and the bottom plate below the shielding plate after passing through the demister, and the rest Is introduced through the water and through the gap between the partition plate and the bottom plate to the grease filter side. A part passes through the grease filter, and the remaining part passes through the gap between the partition plate and the bottom plate below the grease filter and is exhausted to the outside through the air discharge port.

  In addition, the smoke treatment apparatus provided with a liquid tank below the cylindrical frame formed with a perforated plate at the bottom part is connected to the exhaust duct provided with an exhaust fan with the cylindrical frame formed at the bottom part with a perforated plate. Provided in communication, a liquid tank is provided below the cylindrical frame, and a baffle plate is provided on the outside of the cylindrical frame so that the lower end is at least in contact with the liquid in the liquid tank. When the inside becomes negative pressure, smoke is sucked in and passed under the baffle plate to bubble the liquid in the liquid tank, and the scattered droplets pass through the perforated plate to form a liquid film The liquid film thus formed is bubbled.

    JP-A-9-178237 (second page, FIG. 1)     JP-A-11-235512 (pages 3 to 5, FIG. 1)     Japanese Patent Laid-Open No. 2002-126433 (pages 3, 4 and FIG. 1)

Problems to be solved by the invention

  However, each of the conventional techniques has the following problems, and it is difficult to say that it is necessarily sufficient for practical use. That is, for the flue gas treatment device provided with a water storage tank in the range hood, the water storage tank in a state where the introduced flue gas rises along the outer wall of the introduction passage immediately after exiting the introduction passage, and the water is blown up into a water column shape. Erupts into the upper space. Therefore, even if the flue gas passes through the stored water, there is little contact with the stored water, and it is difficult to sufficiently remove oil and other odors in the flue gas. In addition, since the stored water is blown up, water droplets are discharged from the exhaust duct, which may contaminate the external environment.

  For the exhaust gas processing device that communicates the intake chamber and the exhaust gas processing chamber and stores water at the bottom, it contacts the stored water when introduced into the exhaust gas processing chamber from the intake chamber, and the cooling water injection nozzle in the exhaust gas processing chamber Contact with the sprayed cooling water by a part, partly passes through the gap between the swing plate and the bottom plate below the shielding plate after passing through the demister, and the rest passes through the water and passes through the gap between the partition plate and the bottom plate. It is introduced to the side. A part passes through the grease filter, and the remaining part passes through the gap between the partition plate and the bottom plate below the grease filter and is exhausted to the outside through the air discharge port. The exhaust is in a state free from impurities such as oil and odor. However, the removed oil and other impurities become agglomerates, settle in water and adhere to the bottom plate of the flue gas treatment chamber, and the demister and grease filter are locally contaminated by impurities, which are periodically cleaned or replaced. As well as frequent cleaning of the flue gas treatment chamber. In addition, when smoke is introduced from the intake chamber into the smoke treatment chamber, it passes through the stored water. However, the contact area with the stored water is small and the removal of impurities is sufficient as in the case where the water storage tank is provided. is not. The same applies to other parts such as a swing plate.

  With regard to the flue gas treatment device that has a liquid tank below the cylindrical frame that is formed with a perforated plate at the bottom, when the flue gas passes below the baffle plate, it pushes water away and blows up into a water column shape. The contact area with water is small. In addition, water blown up in the form of a water column is scattered on the perforated plate, and smoke is passed through the perforated plate, generating bubbles, but the distribution of water film adhering to the perforated plate and the path of flue gas Are easily biased, and the occurrence of bubbles is not always sufficient. Therefore, the contact area between the flue gas and water is not always sufficient, and oil and fat adhere to the louver and the inner surface of the cylindrical frame, and it is necessary to provide a cleaning nozzle to clean them.

  The problem of the present invention has been made in view of the above-described conventional situation, and the problem is that the contaminated air is sucked into water to generate a large number of fine bubbles when passing underwater, and the water is refined. An object of the present invention is to provide an air purifying device that can remove impurities such as oil by increasing the contact area with water, and can suppress contamination of the device due to separated impurities.

Means for solving the problem

  In order to solve the above problems, in the present invention, an air intake chamber into which contaminated air is introduced and a bubble chamber having a lower end communicated with a communication port are provided, and an air guide plate is provided so as to protrude toward the bubble chamber along the communication port. By providing a bubbling plate member having a large number of small holes above the air guide plate, when the contaminated air passes through the water, there is no need to blow up the water column in the bubble chamber, and a large number of small diameter bubbles from the entire surface of the bubbling plate member. The water is refined to increase the contact area with contaminated air.

  The air purifying device of the present invention comprises an airtight box-like body that stores water at the bottom, and is partitioned into an intake chamber and a bubble chamber by a vertical wall, and a communication port that communicates the intake chamber and the bubble chamber over the entire width is provided at the lower end of the vertical wall. And a septic tank provided with an air inlet for introducing air on the side of the air intake chamber and an exhaust port for discharging air to the bubble chamber, and connected to the exhaust port to discharge air from the septic tank and generate negative pressure. An exhaust member, an air guide plate that protrudes toward the bubble chamber along the communication port and is provided on the vertical wall, and is provided above the air guide plate and has many small holes with the same dimensions as the planar shape of the bubble chamber. A bubbling plate member having an upper portion of the bubble chamber below the exhaust port, and a water droplet scattering prevention plate that bypasses the exhaust and guides it to the exhaust port, and operates the exhaust member at a higher water level than the communication port. The water level of the bubble chamber at the time is bubbled The water is stored in the septic tank up to the initial water level set so as to be above the plate member, and air is sequentially sucked into the intake chamber and the bubble chamber by the operation of the exhaust member, and passes through the bubbling plate member. The water is blown up into fine bubbles and then discharged from the exhaust port.

  The air purifying apparatus of the present invention comprises an airtight box-like body that stores water at the bottom, and is partitioned into an intake chamber and a bubble chamber by a first vertical wall, and is partitioned into a bubble chamber and a sewage storage chamber by a second vertical wall. A first communication port is provided at the lower end of the first vertical wall to communicate the intake chamber and the bubble chamber over the entire width, and the bubble chamber and the sewage storage chamber are communicated over the entire width to the lower end of the second vertical wall from the first communication day. A second communication port having a lower opening area is provided, and a third communication port that connects the bubble chamber and the sewage storage chamber over the entire width is provided at the upper end of the second vertical wall. And a septic tank provided with an exhaust port for exhausting air on the sewage storage chamber side, an exhaust member connected to the exhaust port for exhausting air from the septic tank and generating negative pressure, and an upper part of the first communication port Along the bubble chamber, the air inlet is provided on the first vertical wall. A plate, a bubbling plate member having a large number of small holes with the same dimensions as the planar shape of the bubble chamber, and a lower portion of the bubble chamber below the third communication port to bypass the exhaust. The water droplet scattering prevention plate is guided to the third communication port, and is set so that the water level of the bubble chamber is higher than the bubbling plate member during the operation of the exhaust member at a higher water level than the first communication port. The water is stored in the septic tank up to the initial water level which is the water level, and after the air is sucked into the intake chamber and the bubble chamber sequentially by the operation of the exhaust member, the water is blown up into fine bubbles through the bubbling plate member It is characterized in that it passes through the sewage storage chamber and is discharged from the exhaust port.

  The bubbling plate member is a bubbling plate made of a plate-like body having a large number of small holes, but preferably has a plurality of bubbling plates arranged at intervals in the vertical direction. In that case, it is preferable that a plurality of small holes of the second and higher layers of bubbling plates are provided with a smaller diameter than the lowest layer bubbling plate, and the small holes of the adjacent bubbling plates are arranged so as not to overlap each other.

  In the case of a two-tank structure in which the septic tank is partitioned into an intake chamber and a bubble chamber, a water supply member for supplying water during operation of the exhaust member may be provided in the intake chamber, and an overflow pipe for discharging sewage may be provided in the bubble chamber. .

  A three-tank structure with a septic tank divided into an intake chamber, bubble chamber and sewage storage chamber is provided with a water supply member for supplying water during operation of the exhaust member in the intake chamber, and an overflow pipe for discharging sewage is provided in the sewage storage chamber It may be done. In the sewage storage chamber, it is preferable that a weir member higher than the water level of the sewage storage chamber during operation of the exhaust member faces the second vertical wall and is provided with a slight gap from the bottom. The weir member may be made of a plate-like body or the planar shape may be a U-shape. In order to attach and collect the separated impurities to the weir member, it is preferable that cloth, nonwoven fabric, paper, or the like is detachably attached in the vicinity of the water level during operation of the exhaust member.

  The three tank structure in which the septic tank is divided into an intake chamber, a bubble chamber, and a sewage storage chamber is provided with a water supply member provided to supply water to the intake chamber during operation of the exhaust member, and sewage from the bottom of the sewage storage chamber. A drainage member having a drainage amount adjusting valve and a drainage electromagnetic on-off valve during operation disposed downstream thereof, and an exhaust member provided to detect the water level of the sewage storage chamber during operation of the exhaust member. A water level detection member that has a lower limit water level sensor that detects the lower limit water level during operation and an upper limit water level sensor that detects the upper limit water level during operation of the exhaust member, and opens the drainage electromagnetic on-off valve during operation when the upper limit water level sensor is on. In addition, when the lower limit water level sensor is turned off, it has a control unit that closes the drainage electromagnetic on-off valve during operation, and when operating the exhaust member while supplying water, the water level in the sewage storage chamber is automatically adjusted to the range between the lower limit water level and the upper limit water level It is preferable adapted to integer. In addition, the lower limit water level and the upper limit water level of the sewage storage chamber are set corresponding to the water level of the bubble chamber that can appropriately maintain the generation state of bubbles in the bubble chamber during operation of the exhaust member.

The invention's effect

  According to the present invention, polluted air is sucked into the bubble chamber by the operation of the exhaust member, but the polluted air is introduced while submerging deeply into the bubble chamber by the air guide plate, as if the bubble chamber It rises in the form of bubbles so as to spring up from the entire bottom. Then, by passing through the bubbling plate member, a large number of small-diameter bubbles are vigorously generated from the entire surface of the bubbling plate member, and water is refined to generate mist. As a result, the contaminated air comes into contact with fine water droplets. In other words, the contact area with water increases, and impurities in the contaminated air adhere to the water and are removed. Therefore, the contaminated air is cleaned much better than before, and can be discharged as clean and odorless air. In addition, by providing a water droplet scattering prevention plate in the bubble chamber, fine water droplets due to the generation and disappearance of bubbles are confined in the bubble chamber, suppressing discharge from the exhaust port, and preventing contamination of the exhaust port with water. obtain. The water stored in the septic tank is mixed with the removed impurities in the form of fine particles and becomes an emulsion. When the exhaust member is stopped, the lighter ones float and the heavier ones sink, but they rarely float or settle as a lump. . Therefore, there is no member that has to be replaced due to fouling as in the prior art, the apparatus does not need to be cleaned frequently, and management is easy. In addition, since water bubbles and air temperatures are lowered by the intense generation and disappearance of water bubbles in the bubble chamber, hot polluted air, such as fumes generated from a frying cooker, is also exhausted from the septic tank. When the temperature is low, the influence on the outside air can be suppressed.

  A bubbling plate member in which a plurality of bubbling plates made of a plate-like body having a large number of small holes are arranged at intervals in the vertical direction is a bubble in a state where it further rises from the entire surface of the uppermost bubbling plate. However, since the bubbles are further refined with a smaller diameter than in the case of a single bubbling plate, the contact area of contaminated air and water increases, and impurities can be more reliably removed.

    A water supply member and an overflow pipe are provided to discharge emulsion-like sewage mixed with the removed impurities, and floating impurities are discharged, so that impurities adhere to the wall surface of the valve chamber or sewage storage chamber. Can be suppressed. For example, if the polluted air is flue gas containing oil, etc., impurities such as removed oil will float to form a thin oil film and adhere to the wall surface of the bubble chamber or sewage storage chamber in a paste form However, this adhesion can be suppressed as much as possible by discharging the sewage through the overflow pipe. Therefore, there is no member that has to be replaced due to fouling as in the prior art, the apparatus does not need to be cleaned frequently, and management is easy. Moreover, when the temperature of the water in the septic tank is suppressed by water supply / drainage, and the contaminated air contains oil or the like, the oil or the like is stably removed and discharged as cold air, so that the influence on the outside air can be suppressed.

  In the case where the sewage storage chamber is provided with the dam member, the floating impurities adhere to the upper part of the dam member and are collected and the amount of impurities contained in the sewage is reduced, so that the sewage can be purified. When cloth, non-woven fabric, paper, or the like is attached to the weir member, floating impurities adhere to them, so that the floating impurities can be easily recovered by exchanging them.

  In the three tank structure where the septic tank is partitioned into an intake chamber, bubble chamber and sewage storage chamber, the water level of the sewage storage chamber is automatically adjusted to the range between the lower limit water level and the upper limit water level when operating the exhaust member while supplying water In this case, the contamination state of the water in the septic tank can be appropriately managed while appropriately maintaining the generation state of bubbles in the bubble chamber. Thereby, purification of contaminated air can be continued stably for a long time. In addition, even when water supply is intermittent or continuous, sewage from the upper limit water level to the lower limit water level is periodically discharged, and not only impurities floating on the water surface but also those floating in water periodically Since it is discharged, the contamination state of the water in the septic tank can be managed more appropriately than that discharged from the overflow pipe.

  Embodiments of the present invention will be described below with reference to the drawings. 1 to 6 are conceptual explanatory diagrams of the first embodiment. Reference numeral 1 denotes an air purification device which is placed on a fryer (not shown) and purifies exhaust gas generated from the fryer, that is, contaminated air. A stainless steel base 2 is equipped with a purification tank 3 and an exhaust member 4. Has been.

  The septic tank 3 consists of an airtight box-like body made of a transparent acrylic plate, and is stored in the bottom. The septic tank 3 has a three-tank structure of an intake chamber 5, a bubble chamber 6, and a sewage storage chamber 7. The intake chamber 5 and the bubble chamber 6 are communicated and partitioned at the lower end by a first vertical wall 8. Thus, the bubble chamber 6 and the sewage storage chamber 7 are separated from each other at the lower end and the upper end. The volumes of the respective chambers 5, 6, and 7 are different as shown in FIGS. 1 and 2, and are set in the order of the intake chamber 5, the bubble chamber 6, and the sewage storage chamber 7, but are not limited thereto. For example, the chambers 5, 6, and 7 may have the same volume.

  An intake port 10 is provided at the bottom of the intake chamber 5, and an inner and outer double intake cylinder 11 is attached to the intake port 10. The inside of the intake cylinder 11 is made of a heat-resistant material such as stainless steel, and the outside is made of a transparent acrylic plate. A cover 12 having a fire damper (not shown) is provided at the top of the intake cylinder 11 so that the contaminated air introduced and sucked does not hit the ceiling plate of the intake chamber 5 and is blown in the direction toward the bottom. It is like that. A water supply pipe 13, which is a water supply member, is disposed along the upper side wall of the intake chamber 5, and water is supplied from a hole formed in the water supply pipe 13. Further, the intake chamber 5 is provided with a water level detection member (not shown) such as a float switch for detecting the water level, as shown in FIGS. 3 and 4, than the first communication port 14 described later. Water supply is stopped when an initial water level H0, which is a water level set so that the water level H2 of the bubble chamber during operation of the exhaust member 4 is above a third bubbling plate 18 described later, is detected at a high water level. ing. That is, water is stored in the septic tank 3 in advance before the operation of the exhaust member 4 is started, but when the water level in the intake chamber 5 reaches the initial water level H0, a water level detection member (not shown) is activated to stop water supply. By starting the operation of the exhaust member 4, the water level in the sewage storage chamber 7 rises to H3, the water level in the bubble chamber 6 rises to H2, and the water level in the intake chamber 5 falls to H1. Therefore, when the exhaust member 4 is in operation, a water level detection member (not shown) is deactivated and water supply is continuously performed. Of course, when the water level in the intake chamber 5 rises to the initial water level H0 due to an abnormality such as not being smoothly drained from an overflow pipe 23, which will be described later, a water level detection member (not shown) operates to stop water supply. The form of the water supply, the amount of water supply, etc. may be any of dripping, spraying, water flow, etc., because the temperature rise of the stored water, the progress of contamination of the stored water, etc. differ depending on the type and amount of contaminated air to be treated. It is set according to the usage conditions. Note that when water is supplied in the form of spray, an increase in the temperature of the intake chamber 5 due to the radiant heat of high-temperature contaminated air sucked and introduced from the intake cylinder 11 is suppressed.

  A first communication port 14 for communicating the intake chamber 5 and the bubble chamber 6 is formed at the lower end of the first vertical wall 8. As shown in FIG. 3, the first communication port 14 is formed in an opening shape substantially over the entire width direction of the first vertical wall 8, but may be a plurality of individual holes formed over the entire width direction. The bubble chamber 6 is provided with an air guide plate 15 that protrudes horizontally toward the bubble chamber 6 side of the first vertical wall 8 over the entire width of the bubble chamber 6 along the upper edge of the first communication port 14. The air guide plate 15 guides the contaminated air sucked and introduced from the intake chamber 5 to submerge underwater over the entire length of the bubble chamber 6 (distance between the first vertical wall 8 and the second vertical wall 9). It is set to about one fifth of the total length of the bubble chamber 6. Above the air guide plate 15, a bubbling plate member comprising a first bubbling plate 16, a second bubbling plate 17 and a third bubbling plate 18 having the same dimensions as the planar shape of the bubble chamber 6 is provided horizontally. The first bubbling plate 16 is made of a perforated plate having a large number of small holes, and is provided below the initial water level H0 with a space above the air guide plate 15 as shown in FIG. . The second bubbling plate 17 is a perforated plate having a smaller diameter than the first bubbling plate 16 and having a large number of small holes. The second bubbling plate 17 is provided below the initial water level H0 with a space above the first bubbling plate 16. The third bubbling plate 18 is a perforated plate having the same diameter and the same number of small holes as the second bubbling plate 17, and the exhaust member is operated above the initial water level H 0 with a space above the second bubbling plate 17. It is provided below the water level H2 at the time. The small holes of the third bubbling plate 18 are arranged so that the holes do not overlap with each other as shown in FIGS. 2 and 4 with respect to the second bubbling plate 17, so that small diameter bubbles are easily generated. It has become. The air guide plate 15 is provided along the upper edge of the first communication port 14, but may be provided immediately above the first communication port 14. The first bubbling plate 16 is provided above the air guide plate 15 with a space therebetween, but may be provided in close contact. The air guide plate 15 may also be used by not providing a small hole in about one fifth of the first bubbling plate 16 on the first vertical wall 8 side. The relationship between each bubbling plate 16, 17, 18 and the initial water level H0 and the water level H2 during operation of the exhaust member 4 is preferably such that the first bubbling plate 16 is below the initial water level. , 18 may be provided below the water level H2 when the exhaust member 4 is operated. The inner surface of the small hole of each bubbling plate 16, 17, 18 is preferably a rough surface, and it is easy to generate fine bubbles.

  A second communication port 19 and a third communication port 20 for communicating the bubble chamber 6 and the sewage storage chamber 7 are provided at the lower end and the upper end of the second vertical wall 9, respectively, as shown in FIGS. 9 is formed in an opening shape substantially in the entire width direction. The second communication port 19 is an opening that moves the stored water between the bubble chamber 6 and the sewage storage chamber 7, so that the contaminated air is less likely to flow into the sewage storage chamber 7 after submerging in the water of the bubble chamber 6. The opening area is set smaller than the first communication port 19. The third communication port 20 is an opening for submerging the water in the bubble chamber 6 and introducing the air that has passed through the bubbling plates 16, 17, 18 into the sewage storage chamber 7, and an air rectifying plate 21 is provided on the bubble chamber 6 side. ing. A water droplet scattering prevention plate 22 is provided immediately below the air rectifying plate 21. The water droplet scattering prevention plate 22 is inclined upward toward the first vertical wall 8, and a gap is provided between the first vertical wall 8 and bypasses the air that has passed through the bubbling plates 16, 17, 18. By doing so, fine water droplets scattered by the generation and disappearance of bubbles are prevented from reaching the air rectifying plate 21. The second and third communication ports 19 and 20 may be composed of a plurality of individual holes formed over the entire width direction of the second vertical wall 9.

  The sewage storage chamber 7 is a space for storing sewage containing impurities such as oil separated in the bubble chamber 6, and is provided with an overflow pipe 23, a drainage pipe 24 that is a drainage member, a weir plate 25, and an exhaust port 26. . The overflow pipe 23 is provided with a trap, prevents reverse flow of air, and drains when the water level of the sewage storage chamber 7 exceeds the water level H3 when the exhaust member 4 is operated. The opening of the overflow pipe 23 is provided above the initial water level H0 and below the water level H3, and drains when it reaches a water level somewhat above the water level H3. The water distribution pipe 24 discharges sewage in the septic tank 3 when the operation of the exhaust member 4 is stopped, and is provided with a drainage switching valve (not shown). As shown in FIGS. 1, 2, and 6, the dam plate 25 is provided so as to partition the overflow pipe 23 and the second communication port 19, and is set higher than the water level H <b> 3 during operation of the exhaust member 4. A small gap CL is provided at the lower end of the portion facing the two communication ports 19. The dam plate 25 temporarily stores the inflow of water from the bubble chamber 6 at the start of operation of the exhaust member 4, prevents wasteful drainage from the overflow pipe 23, and is separated by the bubble chamber 6 during operation of the exhaust member 4. Impurities such as oil are collected. An exhaust port 26 is provided in the upper portion of the side wall of the sewage storage chamber 7, and the exhaust member 4 is connected thereto.

  The exhaust member 4 includes a blower 27 such as a sirocco fan, and a suction port 28 is connected to the exhaust port 26. The capacity of the blower 27 is set such that the water level in the bubble chamber 6 rises to H2, the water level in the sewage storage chamber 7 rises to H3, and the water level in the intake chamber 5 falls to H1 during operation. )) Can be sufficiently introduced. Reference numeral 29 denotes a blower outlet.

  The air purification apparatus 1 of 1st Embodiment is comprised as mentioned above, The effect | action is demonstrated below with a use condition. First, a predetermined amount of water is stored in the septic tank 3 before starting operation of the exhaust member 4. The water level in the septic tank 3 rises by the start of water supply by the water supply pipe 13, and when the initial water level H0 is reached, a water level detection member (not shown) provided in the intake chamber 5 operates to stop water supply. In this state, the exhaust member 4 is operated when starting to use a flyer (not shown). By starting the operation of the exhaust member 4, the air in the septic tank 3 is discharged, and smoke from a fryer (not shown) that is contaminated air is sucked and introduced from the intake port 10. As a result, the sewage storage chamber 7 and the bubble chamber 6 become negative pressure, and the exhaust gas is sucked into the intake chamber 5 so that the water in the intake chamber 5 flows into the bubble chamber 6 from the first communication port 14. The water level in the bubble chamber 6 rises to H2 above the third bubbling plate 18, flows into the sewage storage chamber 7 from the second communication port 19, and the water level in the sewage storage chamber 7 rises to H3. Falls to H1 lower than the first communication port 14. On the other hand, the smoke exhausted and introduced into the intake chamber 5 from the intake cylinder 11 is forcibly introduced into the water from the first communication port 14 and is submerged in the water to the vicinity of the second vertical wall 9 by the air guide plate 15. It rises in the form of bubbles so as to spring up from the entire bottom of the bubble chamber 6. Then, a large number of small-sized bubbles are violently generated while sequentially passing through the first bubbling plate 16, the second bubbling plate 17, and the third bubbling plate 18 and rising from the entire surface of the third bubbling plate 18. To make the water fine and mist. Thereby, the flue gas comes into close contact with water, and impurities such as oil adhere to the water and are separated. The air that has passed through the third bubbling plate 18 bypasses the water droplet scattering prevention plate 22 and changes its direction, so that the water droplets are separated, passes through the air rectifying plate 21 and the third communication port 20 in a state that does not include water droplets, It flows into the sewage storage chamber 7, is sucked into the blower 27 from the suction port 28 connected to the exhaust port 26, and is exhausted from the discharge port 29. By the way, the flue gas generated from the fryer (not shown) contains a large amount of impurities such as oil, but by generating intense bubbles in the bubble chamber 6, impurities such as oil are separated and fine particles. Mixed in water. The water in the bubble chamber becomes emulsion-like sewage in which the separated impurities are mixed in the form of fine particles, and since water is continuously supplied to the intake chamber 5, it flows into the sewage storage chamber 7 from the second communication port 19. When the water level in the sewage storage chamber 7 slightly exceeds H3, the water is discharged from the overflow pipe 23. At that time, the sewage discharged from the overflow pipe 23 is temporarily blocked by the dam plate 25 from the water flowing in from the valve chamber 6, and the floating oil or the like adheres to the upper part of the dam plate 25 as a thin paste. Because it is removed, it has less oil. On the other hand, the exhaust does not contain impurities such as oil and water and is sufficiently cleaned, and there is no possibility of polluting the external environment. In addition, since there is little dirt as the whole septic tank 3, and it forms with the transparent acrylic board, since the internal dirt condition can be visually observed, management of an apparatus is easy. Further, since the water supply is always performed during the operation of the exhaust member 4, the temperature rise of the stored water due to the passage of the flue gas can be suppressed, and the oil component and the like can be stably separated and emulsified. In addition, the exhaust is cooled and discharged so as not to affect the outside air temperature due to a synergistic effect with the temperature lowering effect due to the generation and disappearance of bubbles. When the operation of the exhaust member 4 is stopped, a drainage switching valve (not shown) is manually operated and opened, and the sewage in the septic tank 3 is discharged from the water distribution pipe 24. Then, if necessary, the ceiling plates of the intake chamber 5, the bubble chamber 6, and the sewage storage chamber 7 may be removed and the chambers 5, 6, and 7 may be washed.

  FIG. 7 is a conceptual explanatory diagram of the second embodiment. In the air purification apparatus 1 shown in FIG. 7, the purification tank 3 has a two-tank structure of an intake chamber 5 and a bubble chamber 6, and the exhaust member 4 is connected in a sealed manner to an exhaust port 36 provided in the upper part of the bubble chamber 6. Has been. The intake chamber 5 is provided with a water level detection member (not shown) such as a float switch for detecting the water level, and an overflow pipe (not shown) that is provided with a trap in the bubble chamber 6 and can prevent backflow of air. ) And a drain pipe (not shown) are provided, and water is constantly supplied during operation of the exhaust member 4 as in the first embodiment. The position of the opening of the overflow pipe (not shown) is provided at a position lower than the water level H2 when the exhaust member 4 is operated because the bubble chamber 6 has a negative pressure above the initial water level H0. As in the first embodiment, the contaminated air is purified by submerging under the air guide plate 15 in the bubble chamber 6 and generating bubbles by passing through the first to third bubbling plates 16, 17 and 18. The In addition, the code | symbol same as FIGS. 1-6 means the same function member. In the second embodiment, an electromagnetic open / close valve may be provided in a drain pipe (not shown) provided at the bottom of the bubble chamber 6 and the electromagnetic open / close valve may be controlled to open and close by a timer. For example, the timer operates the exhaust member corresponding to the initial water level H0 from the water supply time until the water level of the bubble chamber 6 reaches the upper water level at which the generation of bubbles can be appropriately maintained during the operation of the exhaust member. The drainage time until the water level H2 of the bubble chamber 6 descends to the water level H2 in advance is set in advance, the electromagnetic on-off valve is opened and drained after the water supply time has elapsed, and the drainage is stopped by closing the electromagnetic on-off valve after the drainage time has elapsed. Also good.

  8 to 10 are conceptual explanatory diagrams of the third embodiment. The air purification device 1 shown in FIG. 8 continuously supplies water during the operation of the exhaust member 4, detects the water level of the sewage storage chamber 7, intermittently discharges sewage, and sets the water level of the sewage storage chamber 7 to the lower limit water level. It adjusts automatically to the range of H31 and the upper limit water level H32, and is equipped with the same structure as 1st Embodiment shown in FIGS. 1-6 except these matters. Note that the same reference numerals as in FIGS. 1 to 6 denote the same functional members. The following description focuses on matters that are different from the first embodiment. In FIG. 8, 50 is a water supply member for supplying water to the intake chamber 5. An operation water supply amount adjustment valve 53 and an operation water supply electromagnetic opening / closing valve 52 are sequentially provided from the upstream side of the water supply pipe 13. A valve 51 is provided. 57 is a drainage member that discharges sewage from the bottom of the sewage storage chamber 7. An operation drainage adjustment valve 56 and an operation drainage electromagnetic on-off valve 55 are sequentially provided downstream of the water distribution pipe 24, and a drainage valve 54 is provided in parallel with these. Is provided. Reference numeral 60 denotes a water level detection member composed of an electrode type sensor, an earth electrode 61 of the electrode type sensor, an initial water level sensor 62 composed of an initial water level electrode, a lower limit water level sensor 63 composed of a lower limit water level electrode, and an upper limit composed of an upper limit water level electrode. A warning water level sensor 65 including a water level sensor 64 and a warning water level electrode is provided. Each water level sensor 62, 63, 64, 65 detects each water level by energizing between the ground electrode and each water level electrode through water. Each sensor is shown. By the way, the initial water level H0 is a water level stored in the septic tank 3 before the operation of the exhaust member 4, and the water level H2 of the bubble chamber 6 immediately after the start of the operation of the exhaust member 4 is set above the third bubbling plate 18. Has been. The lower limit water level H31 and the upper limit water level H32 of the sewage storage chamber 7 are set as the water level of the sewage storage chamber 7 corresponding to the water level of the bubble chamber 6 that can appropriately maintain the bubble generation state in the bubble chamber 6 when the exhaust member 4 is operated. Has been. For example, the lower limit water level H31 is the water level of the sewage storage chamber 7 immediately after the start of the operation of the exhaust member 4, and substantially corresponds to the water level H3 of the sewage storage chamber in the first embodiment. The upper limit water level H32 is set as the water level of the sewage storage chamber 7 corresponding to the water level of the bubble chamber 6 at which the mixing of water droplets due to the generation and disappearance of bubbles in the exhaust gas that has passed through the bubble chamber 6 is negligible. That is, since water is supplied to the intake chamber 5 during the operation of the exhaust member 4, the amount of stored water increases, and the water levels of the bubble chamber 6 and the sewage storage chamber 7 rise. As the water level in the bubble chamber 6 rises, the generation position of bubbles generated in a heap is increased, and water droplets due to the generation and disappearance of bubbles start to be mixed into the exhaust gas passing through the bubble chamber 6. The state where the mixing of water droplets can be ignored is defined as a state where bubbles are appropriately generated, and an appropriate water level at which this state is maintained is defined as the upper limit water level of the bubble chamber 6. It is set as the water level of the sewage storage chamber 7 corresponding to the water level. Further, the warning water level H33 is a water level of the sewage storage chamber 7 corresponding to the water level of the bubble chamber 6 which starts to increase to the extent that the occurrence of water droplets due to the generation / disappearance of bubbles in the exhaust gas passing through the bubble chamber 6 cannot be ignored. Is set. As shown in FIG. 9, the control unit 66 is an initial water supply electromagnetic switch according to signals from the initial water supply switch 70, the operation switch 71, the initial water level sensor 62, the lower limit water level sensor 63, the upper limit water level sensor 64 and the warning water level sensor 65. The operation of the valve 51, the operating water supply electromagnetic switching valve 52, the operating drainage electromagnetic switching valve 55, and the operation power circuit breaker 72 is controlled. The specific configuration of the control unit 66 and the like will be described in the operation and use state of the air purification device 1 below.

  The third embodiment is configured as described above, and the operation thereof will be described below together with the use state with reference to FIG. Prior to the operation of the air purifier 1, the operating water supply amount adjustment valve 53 is manually operated to preliminarily adjust the water supply amount during operation of the exhaust member 4, and the operating water discharge amount adjustment valve 56 is manually operated to operate the exhaust member 4. Pre-adjust the amount of drainage during operation. After confirming that the drain valve 54 is closed, the initial water supply switch 70 is manually turned on to open the initial water supply electromagnetic opening / closing valve 51 and start water supply. Water is sprayed from the water supply pipe 13 to the intake chamber 5 and stored in the septic tank 3 including the intake chamber 5, bubble chamber 6, and sewage storage chamber 7. The water level of the septic tank 3 rises as time passes, and when the initial water level H0 is reached, the initial water level sensor 62 is turned on, the initial water supply electromagnetic on-off valve 51 is closed, and the initial water supply is stopped. In this state, the operation switch 71 is manually turned on when a flyer (not shown) is used, the exhaust member 4 is started, and the operation water supply electromagnetic on-off valve 52 is opened. By starting the operation of the exhaust member 4, smoke emitted from a fryer (not shown) is sucked and introduced from the intake port 10, passes through the intake chamber 5, the bubble chamber 6 and the sewage storage chamber 7, and passes through the exhaust port 26 to the outside. Exhausted. At that time, immediately after the operation of the exhaust member 4 is started, the water level in the sewage storage chamber 7 and the bubble chamber 6 rises, the water level in the intake chamber 5 falls, and the smoke is discharged from the first communication port 14 as in the first embodiment. From the bubble chamber 6, submerged in the water to the vicinity of the second vertical wall 9 by the air guide plate 15, and rises in the form of bubbles so as to rise from the entire bottom of the bubble chamber 6, and the first bubbling plate 16 and the second bubbling plate 16 After passing through the bubbling plate 17, fine bubbles are generated and disappeared in a pile shape from the entire surface of the third bubbling plate 18, guided to the water droplet scattering prevention plate 22, and flowed into the sewage storage chamber 7 from the third communication port 20. The air is exhausted from the exhaust port 26 to the outside. Simultaneously with the start of the operation of the exhaust member 4, the initial water supply electromagnetic opening / closing valve 51 is opened, and water supply from the water supply pipe 13 to the intake chamber 5 is started in a spray form. Since the drain valve 54 and the operation drain electromagnetic open / close valve 55 are closed, the amount of water stored in the septic tank 3 is increased and the water level in the intake chamber 5 is maintained at almost H1, but the bubble chamber 6 and the sewage storage chamber 7 are maintained. The water level gradually rises. When the water level in the sewage storage chamber 7 reaches the upper limit water level H 32, the upper limit water level sensor 64 is turned on, the operation drain electromagnetic open / close valve 55 is opened, and drainage starts from the drain pipe 24. Since the amount of drainage is set to be equal to or greater than the amount of water supply, the water level in the sewage storage chamber 7 gradually falls. When the pressure falls to the lower limit water level H32, the lower limit water level sensor 63 is turned off, the drainage electromagnetic on-off valve 55 is closed during operation, and the drainage is stopped. Thereafter, drainage is controlled in the same manner. On the other hand, in the bubble chamber 6, after the water level rises to a predetermined height, it gradually falls to the H2 water level as the water level in the sewage storage chamber 7 drops due to the opening of the operation drain electromagnetic open / close valve 55. That is, the water level is maintained above the third bubbling plate 18 so as to maintain a bubble generation state where water droplets contained in the exhaust gas can be ignored. When the water level in the sewage storage chamber 7 exceeds the upper limit water level H32 and reaches the warning water level H33, the warning water level sensor 65 is turned on, the operation power circuit breaker 72 is operated, the exhaust member 4 is stopped, and the operating time supply is supplied. The water electromagnetic on-off valve 52 is closed.

  In the third embodiment, the opening / closing control of the drainage electromagnetic on-off valve 55 during operation may be performed by a timer instead of the water level detection member 60, and is affected by oil content in sewage as in the case of using the water level detection member 60. Stable opening / closing control can be achieved without any problems. For example, regardless of whether it is continuous water supply or intermittent water supply, the opening time of the operation drain electromagnetic open / close valve 55 is set based on the water level rising speed of the sewage storage chamber 7 according to the water supply amount, and the water discharge amount and the water supply amount The closing timing of the drainage electromagnetic on-off valve 55 during operation is set based on the water level lowering speed of the sewage storage chamber 7 according to the difference between the two.

It is a notional explanatory drawing of a 1st embodiment of the present invention, and is a longitudinal section at the time of operation. It is sectional drawing which follows the AA line of FIG. It is an expanded sectional view which follows the BB line of FIG. It is an expanded sectional view which follows the CC line of FIG. It is an expanded sectional view which follows the DD line of FIG. It is an expanded sectional view which follows the EE line of FIG. It is a conceptual explanatory drawing of 2nd Embodiment of this invention, and is a longitudinal cross-section of the septic tank which is the principal part at the time of a driving | operation. It is a conceptual explanatory drawing of 3rd Embodiment of this invention, and is a longitudinal cross-section at the time of driving | operation standby. It is explanatory drawing of the principal part of 3rd Embodiment of this invention, and is a block diagram of driving | operation operation and water supply / drainage control. It is explanatory drawing of the principal part of 3rd Embodiment of this invention, and is a flowchart of driving operation and water supply / drainage control.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Air purification apparatus 3 Septic tank 4 Exhaust member 5 Intake chamber 6 Bubble chamber 7 Sewage storage chamber 8 1st vertical wall 9 2nd vertical wall 10 Intake port 13 Water supply pipe 14 1st communicating port 15 Air guide plate 16 1st bubbling plate 17 Second bubbling plate 18 Third bubbling plate 19 Second communication port 20 Third communication port 22 Water droplet scattering prevention plate 23 Overflow pipe 24 Drain pipe 25 Weir member (dam plate)
26 Exhaust port 50 Water supply member 51 Initial water supply electromagnetic on-off valve 52 Operation water supply electromagnetic on-off valve 53 Operation water supply adjustment valve 54 Drain valve 55 Operation water discharge electromagnetic on-off valve 56 Operation water discharge adjustment valve 57 Drainage member 60 Electrode type sensor Water level detection member 61 Ground electrode 62 of electrode-type sensor Initial water level sensor 63 comprising an initial water level electrode 63 Lower limit water level sensor comprising a lower limit water level electrode 64 Upper limit water level sensor comprising an upper limit water level electrode 65 Warning water level sensor comprising an alarm water level electrode CL Clearance H0 between weir member and bottom of septic tank Initial water level H1 which is water level of all chambers when exhaust member is stopped Water level H2 of intake chamber during operation of exhaust member H3 level of bubble chamber during operation of exhaust member Water level H31 of the sewage storage chamber during operation of the lower limit water level H32 of the sewage storage chamber during operation of the exhaust member Upper limit water level of sewage storage chamber during operation of member H33 Warning water level of sewage storage chamber during operation of exhaust member

Claims (7)

  It consists of an airtight box that stores water at the bottom, and is divided into an intake chamber (5) and a bubble chamber (6) by a vertical wall (8), and an intake chamber (5) and a bubble chamber over the entire width at the lower end of the vertical wall (8). A communication port (14) communicating with (6) is provided, an intake port (10) for introducing air is provided on the intake chamber (5) side, and an exhaust port (36) for discharging air to the bubble chamber (6) A septic tank (3) provided with an exhaust member (4) connected to the exhaust port (36) and exhausting air from the septic tank (3) to generate a negative pressure, and above the communication port (14) The air guide plate (15) provided on the vertical wall (8) protruding to the bubble chamber (6) side and provided above the air guide plate (15) and having the same dimensions as the planar shape of the bubble chamber (6) A bubbling plate member (16, 17, 18) having a large number of small holes, and an exhaust port (36) above the bubble chamber (6) When the exhaust member (4) is in operation at a higher water level than the communication port (14), it is provided with a water droplet scattering prevention plate (22) that is provided below and bypasses the exhaust gas and leads to the exhaust port (36). In the septic tank (3), the water level (H2) of the bubble chamber is stored in the septic tank (3) up to the initial water level (H0) which is set to be above the bubbling plate member (16, 17, 18), and the exhaust member (4) As a result of the operation, air is sucked and introduced sequentially from the air inlet (10) to the air intake chamber (5) and the bubble chamber (6), passing through the bubbling plate members (16, 17, 18) and blowing up water into fine bubbles. An air purifying device characterized in that the air purifier is discharged from an exhaust port (36).   It consists of an airtight box-like body that stores water at the bottom, and is divided into an intake chamber (5) and a bubble chamber (6) by a first vertical wall (8), and a bubble chamber (6) and dirty water by a second vertical wall (9). A first communication port (14) that is partitioned by the storage chamber (7) and communicates the intake chamber (5) and the bubble chamber (6) over the entire width is provided at the lower end of the first vertical wall (8), and the second vertical wall The lower end of (9) communicates the bubble chamber (6) and the sewage storage chamber (7) over the entire width, and is provided with a second communication port (19) that is lower than the first communication port (14) and has a small opening area. 2 A third communication port (20) for communicating the bubble chamber (6) and the sewage storage chamber (7) over the entire width is provided at the upper end of the vertical wall (9), and an air intake port for introducing air to the intake chamber (5) side A septic tank (3) provided with (10) and provided with an exhaust port (26) for discharging air to the sewage storage chamber (7) side, and an exhaust port (26) An exhaust member (4) that is connected and discharges air from the septic tank (3) to generate a negative pressure, and protrudes toward the bubble chamber (6) side above the first communication port (14) to the first vertical wall ( 8) and a bubbling plate member (16, 16) provided above the air guide plate (15) and having a large number of small holes with the same dimensions as the planar shape of the bubble chamber (6). 17, 18) and a water droplet scattering prevention plate (22) provided below the third communication port (20) in the upper part of the bubble chamber (6) and bypassing the exhaust to guide the third communication port (20). So that the water level (H2) of the bubble chamber when the exhaust member (4) is operated is above the bubbling plate member (16, 17, 18) at a higher water level than the first communication port (14). Water is stored in the septic tank (3) up to the initial water level (H0) which is the set water level, and the exhaust member By the operation of 4), air is sucked and introduced sequentially from the intake port (10) into the intake chamber (5) and the bubble chamber (6), and passes through the bubbling plate members (16, 17, 18) to form water in the form of fine bubbles. The air purification apparatus is characterized in that after being blown up, it passes through the sewage storage chamber (7) and is discharged from the exhaust port (26).   The bubbling plate member (16, 17, 18) comprises a plurality of bubbling plates (16, 17, 18) made of a plate-like body having a large number of small holes arranged at intervals in the vertical direction. 2. The air purification apparatus according to 2.   The intake chamber (5) is provided with a water supply member (13) for supplying water during operation of the exhaust member (4), and the bubble chamber (6) is provided with an overflow pipe for discharging dirty water. Air purification equipment.   The intake chamber (5) is provided with a water supply member (13) for supplying water when the exhaust member (4) is operated, and the sewage storage chamber (7) is provided with an overflow pipe (23) for discharging sewage. The air purification apparatus according to claim 2.   In the sewage storage chamber (7), a dam member (25) higher than the water level (H3) of the sewage storage chamber during operation of the exhaust member (4) faces the second vertical wall (9) and has a slight gap from the bottom. The air purifier according to claim 2, wherein the air purifier is provided with a gap (CL).   A water supply member (50) provided to supply water to the intake chamber (5) during operation of the exhaust member (4) and a drainage amount adjusting valve (50) provided to discharge sewage from the bottom of the sewage storage chamber (7) 56) and a drainage member (57) having an operation drain electromagnetic open / close valve (55) disposed downstream thereof, and a water level in the sewage storage chamber (7) when the exhaust member (4) is operated. The lower limit water level sensor (63) for detecting the lower limit water level (H31) during operation of the exhaust member (4) and the upper limit water level sensor (64) for detecting the upper limit water level (H32) during operation of the exhaust member (4). When the water level detection member (60) and the upper limit water level sensor (64) are turned on, the drainage electromagnetic on-off valve (55) is opened, and when the lower limit water level sensor (63) is turned off, the drainage electromagnetic on-off valve ( 55) equipped with a control part (66) for closing The water level of the sewage storage chamber (7) is automatically adjusted to the range between the lower limit water level (H31) and the upper limit water level (H32) when operating the exhaust member (4) while supplying water. Air purification device.

Images