JP2018034146A - Cyclone separator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hood located at a ventilation hole for air-supply, which has a function for separating a foreign matter, and further, has a small size and an improved design property.SOLUTION: A cyclone separator comprises a first air supply port 4 comprising plural stationery vanes on one end side of a cylindrical case 1, and an outlet port 6 on one end face of the case 1 on a side same as the stationery vane 3. The other end side in the case 1 comprises a second air supply port 5, which is positioned at a lowermost part in the state that a central axis of the cylindrical case 1 is horizontally located, on a side face of the case 1. A space division plate 7 comprises an open hole which communicates a first revolution chamber 8 and a second revolution chamber 9 with each other. The first air supply port 4 is communicated the outlet port 6 via the first revolution chamber 8, and the second air supply port 5 is communicated with the outlet port 6 via the second revolution chamber 9 and the open hole. By such a configuration, the cyclone separator can be so configured as to be compact and has a small size, and has an improved sense of unity with a building since an external appearance thereof is so configured as to be cylindrical.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a cyclone separator that is attached to an air intake port portion of an outdoor outer wall of a building when outdoor air is taken indoors in the building, and separates foreign matters contained in the outdoor air and returns them to the outside.

  Conventionally, this kind of cyclone separation apparatus is known, for example, from Patent Document 1.

  Hereinafter, the cyclone separator will be described with reference to FIG.

  As shown in FIG. 6, a circular inflow port 102 in which a plurality of blades 101 are radially arranged on one end surface in the axial direction with gaps spaced at equal intervals, and a circular outflow port (inlet 102 and The space between the inflow port 102 and the outflow port is a cylindrical swirl chamber 103, and the air that has entered from the inflow port 102 is swirled by the blades 101, and then the airflow. Flows out of the outlet. Below the swirl chamber 103 is provided a separation chamber 104 that accommodates a foreign air separated by a swirling airflow.

JP 2008-36579 A

  In such a conventional cyclone separation device, since the swirl chamber and the separation chamber are arranged vertically, there is a problem that the device becomes large in the vertical direction and a problem that the sense of unity with the building is low. It was.

  In addition, since the plurality of blade members are arranged with gaps at the inlet, the inflow of rainwater cannot be prevented and water can easily enter indoors. For this reason, it is necessary to provide a cover for preventing the entry of wind and rain on the outdoor side of the blade member, but in this case as well, there is a problem that the device becomes large, other issues that the cost of the device rises, and a sense of unity with the building There was a problem that it was low.

  SUMMARY OF THE INVENTION The present invention solves the above-described conventional problems, and an object of the present invention is to provide a cyclone separation device that is not large in size and has high design properties.

  In order to achieve this object, a cyclone separation device according to the present invention includes a cylindrical case into which airflow flows, an opening having at least a part of a side surface at one end of the case, and the opening. A first air inlet formed with a plurality of fixed vanes arranged along the same, and an outlet in the one end surface of the case on the same side as the fixed vanes, and the airflow passing through the first air inlet is swirled by the fixed vanes In the cyclone separating apparatus, the airflow having a component flows into the case, and the airflow flows out of the case from the outlet, and the other end side of the case is on the side surface of the case. The second intake port that can be positioned at the lowermost position in a state where the central axis is horizontally disposed, and the case is divided into a first swirl chamber on the inner peripheral side and a second swirl chamber on the outer peripheral side inside the case. Sky A partition plate, and the space partition plate includes a through hole that communicates the first swirl chamber and the second swirl chamber, and the first intake port is connected to the outlet through the first swirl chamber. The second intake port communicates with the outlet through the second swirl chamber and the through hole, thereby achieving the intended purpose.

  According to the present invention, there is provided a cylindrical case into which airflow flows, an opening having at least a part of a side surface opened at one end side of the case, and a plurality of fixed blades arranged along the opening. One air inlet and one end surface of the case on the same side as the fixed blade are provided with an outlet, and the airflow passing through the first air inlet flows into the case as an airflow having a swirling component by the fixed blade. In the cyclone separation device in which airflow flows out of the case from the outlet, the other end side of the case is at the bottom of the side surface of the case with the central axis of the cylindrical case disposed horizontally. A second air inlet that can be positioned, and a space dividing plate that is divided into an inner circumferential first swirl chamber and an outer circumferential second swirl chamber inside the case, the space dividing plate The first swirl chamber A through hole communicating with the second swirl chamber, the first intake port communicating with the outlet through the first swirl chamber, and the second intake port penetrating with the second swirl chamber By being configured to communicate with the outlet through the hole, the first swirl chamber and the second swirl chamber are divided by the space dividing plate into one cylindrical case, and the first swirling chamber and the second swirl chamber are divided into the space dividing plate. By providing a through-hole that communicates with the two swirl chambers, outdoor air that has entered from the first air inlet flows into the first swirl chamber as a swirl airflow, where foreign matter contained in the swirl airflow is centrifugal force And moves around the space dividing plate and moves from the through hole to the second swirl chamber. That is, the second swirl chamber is a separation chamber for receiving the separated foreign matter, and includes a first swirl chamber and a second swirl chamber serving as a separation chamber with a space dividing plate sandwiched in one cylindrical case. Therefore, since the size of the apparatus is suppressed and the apparatus is accommodated in a cylindrical shape, it is possible to obtain an effect that the sense of unity with the building is enhanced.

External perspective view of Embodiment 1 of the present invention Sectional view along the same central axis AA sectional view Sectional drawing along the central axis of Embodiment 2 of this invention BB sectional view External perspective view of Embodiment 3 of the present invention Sectional view along the same central axis External perspective view showing a conventional cyclone separator

  The cyclone separator according to claim 1 of the present invention is a cylindrical case into which an airflow flows, an opening having at least a part of a side surface opened at one end of the case, and a plurality of fixings arranged along the opening. A first air inlet formed with blades, and an outlet on one end surface of the case on the same side as the fixed blade, and an airflow passing through the first air inlet is an airflow having a swirling component by the fixed blade. In the cyclone separation device that flows into the case and flows out of the case from the outlet, the other end of the case is horizontally placed on the central axis of the cylindrical case on the side of the case A second air inlet that can be positioned at the lowest position in the disposed state, and a space dividing plate that divides the case into an inner circumferential first swirl chamber and an outer circumferential second swirl chamber inside the case. The sky The dividing plate is provided with a through hole that communicates the first swirl chamber and the second swirl chamber, and the first intake port communicates with the outlet through the first swirl chamber, The mouth has a configuration in which it communicates with the outlet through the second swirl chamber and the through hole.

  Thereby, the inside of the cylindrical case is divided into the first swirl chamber and the second swirl chamber by the space dividing plate, and the space dividing plate is provided with a through hole that communicates the first swirl chamber and the second swirl chamber. The outdoor air that has entered through the air intake port flows into the first swirl chamber as a swirling airflow, where the foreign matter contained in the swirling airflow receives centrifugal force, circulates in the vicinity of the space dividing plate, and passes through the through hole. Move to the second swirl chamber. That is, the second swirl chamber is a separation chamber that receives the separated foreign matter, and the foreign matter separated in the second swirl chamber is deposited near the lower portion, that is, near the second intake port, due to gravity. Furthermore, if natural wind blows outside the device and crosswinds also in the vicinity of the second swirl chamber, the static pressure decreases from Bernoulli's theorem, and if the static pressure outside the device is lower than the second swirl chamber side, It is discharged outside. By this action, the foreign matter separated into the second swirl chamber can be returned to the outdoors.

  Moreover, the inside of this apparatus is made into a negative pressure by the air blower arrange | positioned downstream of this apparatus, and air flows in toward a 2nd turning chamber also from this apparatus also in a 2nd inlet port. Since a part of the swirling airflow in the first swirl chamber flows into the second swirl chamber through the through hole with directivity, the airflow in the second swirl chamber has the same swirling direction as the airflow in the first swirl chamber, and the second intake air The airflow flowing in from the mouth turns on the swirling airflow. As a result, foreign matter that has moved from the first swirl chamber to the second swirl chamber and foreign matter that has flowed in from the second swirl chamber can be moved to the outer peripheral side, and the foreign matter can move from the through hole to the first swirl chamber. Therefore, a decrease in separation performance can be suppressed.

  In other words, since the first swirl chamber and the second swirl chamber serving as the separation chamber are provided with the space dividing plate sandwiched in one cylindrical case, the separation performance is suppressed while suppressing the increase in the size of the apparatus. Is secured. And since a cyclone separator is settled in cylindrical shape, the effect that a sense of unity with a building also becomes high can be acquired.

  Further, in the cyclone separation device according to claim 2 of the present invention, the space dividing plate has a cylindrical wall, and an end of the cylindrical wall on the other end side of the case is in contact with an inner surface of the case, The first swirl chamber and the second swirl chamber were divided.

  Thereby, the second swirl chamber surrounds the first swirl chamber in an annular shape, and the airflow in the second swirl chamber can be swirled reliably. Therefore, since the foreign material in the second swirl chamber swirls and receives centrifugal force and moves to the outer peripheral side of the second swirl chamber, it is possible to suppress the inflow from the through hole to the first swirl chamber. In addition, the second swirl chamber is not arranged in the center axis direction, but the second swirl chamber is configured so as to surround the first swirl chamber, so that the height in the central axis direction is also suppressed. This leads to downsizing of the device.

  The cyclone separator according to claim 3 of the present invention is configured to circulate around the space dividing plate so that a cross-sectional area of the first swirl chamber gradually decreases from one end side to the other end side of the case. And the second air inlet has an upstream end located on the upstream side with respect to the rotation direction of the swirling airflow generated at the first air inlet on the side surface of the case, and the central axis of the case The through-hole is arranged on one side divided into two on the plane including the lowermost part, upstream of the upstream end with respect to the rotational direction of the swirling airflow generated at the first intake port. A plate-shaped guide member is provided in the second swirl chamber in the vicinity of the second air intake port rather than the through-hole, and the guide member is located on the outer peripheral side of the case and is on one end side from the other end of the case Toward the axial direction of the case over the upstream end The outer peripheral side provided, and the inner peripheral side located on the inner peripheral side of the case and extending from the other end of the case toward the space dividing plate, at the other end of the case, The outer peripheral side is disposed between the through-hole and the upstream end, and the inner peripheral side is the second side with respect to the rotational direction of the swirling airflow generated at the first intake port. Arranged on the downstream side of the center position of the air inlet, in the flow path in the second swirl chamber, the side on the inner peripheral side is in a direction away from the through hole compared to the side on the outer peripheral side. Arranged.

  As a result, as the cross-sectional area in the first swirl chamber decreases, the centrifugal force acting on the foreign matter contained in the swirling airflow increases, so that the foreign matter passes through the through hole from the first swirl chamber more reliably. Can be moved to. That is, the foreign substance separation performance is improved.

  Further, a part of the swirling airflow in the first swirling chamber blows out from the through hole to the second swirling chamber, so that a swirling airflow in the same direction in the first swirling chamber is generated in the second swirling chamber, but in the vicinity of the second intake port By providing the guide member in the first swirl chamber, the airflow flowing in from the second intake port can be reliably directed in the same direction as the swirl airflow in the first swirl chamber, and the effect of strengthening the swirl airflow in the second swirl chamber is obtained. I can do things. As a result, the foreign matter flowing in from the second intake port in the second swirl chamber can be moved away from the through hole, and the effect of preventing the foreign matter from flowing into the first swirl chamber through the through hole and flowing out to the outlet port can be enhanced. it can.

  Moreover, the cyclone separator according to claim 4 of the present invention is configured to circulate the space dividing plate so that the cross-sectional area of the first swirl chamber does not change from one end side to the other end side of the case. And the second air inlet has an upstream end located on the upstream side with respect to the rotational direction of the swirling airflow generated at the first air inlet on the side surface of the case, and the central axis of the case and the The one side divided into two on the surface including the lowermost part, the through hole is disposed upstream of the upstream end with respect to the rotational direction of the swirling airflow generated at the first air inlet, A plate-shaped guide member is provided in the second swirl chamber in the vicinity of the second intake port rather than the through hole, and the guide member is located on the outer peripheral side of the case and is directed from the other end of the case to one end side. Extending in the axial direction of the case beyond the second air inlet An outer peripheral side and an inner peripheral side, and at the other end of the case, the outer peripheral side is disposed between the through hole and the upstream end, and the inner peripheral side A side edge is disposed downstream of the center position of the second air intake port with respect to the rotational direction of the swirling airflow generated at the first air intake port. The side on the circumferential side is arranged in a direction in which the distance from the through hole is longer than the side on the outer circumferential side.

  As a result, the first swirl chamber and the second swirl chamber have a structure in which the cross-sectional area does not change from one end side to the other end side of the case. Therefore, the distance between the space dividing plate and the outlet can be secured. Can be prevented from flowing into the outlet, so that the separation performance is improved. Further, when a member including the first swirl chamber and the second swirl chamber is manufactured by resin molding, the manufacture becomes easy as an integral structure.

  Further, a part of the swirling airflow in the first swirling chamber blows out from the through hole to the second swirling chamber, so that a swirling airflow in the same direction in the first swirling chamber is generated in the second swirling chamber, but in the vicinity of the second intake port By providing the guide member in the first swirl chamber, the airflow flowing in from the second intake port can be reliably directed in the same direction as the swirl airflow in the first swirl chamber, and the effect of strengthening the swirl airflow in the second swirl chamber is obtained. I can do things. As a result, the foreign matter flowing in from the second intake port in the second swirl chamber can be moved away from the through hole, and the effect of preventing the foreign matter from flowing into the first swirl chamber through the through hole and flowing out to the outlet port can be enhanced. I can do it.

  The cyclone separator according to claim 5 of the present invention is such that the outlet is cylindrical and has a case side end protruding into the case, and the position of the case side end is the space in a side view. Ribs were provided in a direction that overlapped with the dividing plate and spread over the entire circumference of the case side end.

  Thereby, even when this apparatus is rained, rainwater can be prevented from going out of the outlet. The inside of the case side end of the inflow port and the outflow port cannot be connected with a straight line, and rainwater does not enter directly. Moreover, it is possible to prevent the water traveling on the cylindrical outer surface side of the outlet from being transferred to the inside of the outlet by the rib provided on the case side end, and the water separation performance is improved.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(Embodiment 1)
FIG. 1 is an external view of a cyclone separation device according to the present embodiment, and a first intake port 4 in which a plurality of fixed blades 3 are arranged in an opening 2 opened around a side surface on one end side of a cylindrical case 1. And on the other side of the case 1 on the side opposite to the first air inlet 4, the central axis 20 of the cylindrical case 1 can be positioned at the lowest position in the gravitational direction in a state of being horizontally disposed. A second air inlet 5 is provided.

  The fixed blades 3 are arranged in the opening 2 with a certain gap over 360 degrees. In the present embodiment, 18 fixed blades 3 are provided and all face the central axis 20 at the same angle. As a result, the airflow that has passed through the fixed blade 3 becomes a swirling airflow. In addition, in this Embodiment, although the opening part 2 is opened over 360 degree | times, a part may be blocked.

  FIG. 2 is a cross-sectional view cut along the central axis 20 of the cylindrical case 1 (shifted slightly forward from the central axis for easy viewing). The case 1 has a first inlet 4 side that is closed to form an end face 1A, and a cylindrical outlet 6 that communicates between the outside of the apparatus and the inside of the apparatus. Note that the end surface 1B opposite to the end surface 1A is closed without opening.

  A space dividing plate 7 is provided on the end surface 1B side in the case 1, and the space dividing plate 7 has an inner peripheral side space as a first swirl chamber 8 and an outer peripheral side space as a second swirl chamber 9. Is inclined so as to gradually decrease as the cross-sectional area of the first swirl chamber 8 crossing the cylindrical central axis 20 of the case 1 moves away from the outlet 6. That is, the space dividing plate 7 has a cylindrical wall 25 having a truncated cone shape.

  One end of the space dividing plate 7 is in contact with the side surface of the case 1, the end of the space dividing plate 7 is an end portion 7A, and the other end is in contact with the end surface 1B of the case 1. The end of 7 is referred to as end 7B.

  That is, the first swirl chamber 8 and the second swirl chamber 9 are configured in the cylindrical case 1 via the space dividing plate 7, and the end surface 1B of the case 1 is swirled at the center and the outer periphery, respectively. It is in contact with the space of the chamber 8 and the second swirl chamber 9. In addition, it is good also as a closed surface which closed the edge part 7B. In this case, the closed surface comes into contact with the end surface 1B.

  The first swirl chamber 8 and the second swirl chamber 9 communicate with each other through a through hole 10 provided in the space dividing plate 7. The through hole 10 is provided in a part of the cylindrical wall of the space dividing plate 7. Thus, the first intake port 4 communicates with the outlet 6 through the first swirl chamber 8, and the second intake port 5 communicates with the first swirl chamber 8 through the second swirl chamber 9 and the through hole 10. The structure which connects to the outflow port 6 is formed.

  Further, the maximum diameter of the first swirl chamber 8 and the maximum diameter of the second swirl chamber 9 are the same.

  In this embodiment, since the inner peripheral side end of the fixed blade 3 is in contact with the opening 2 of the case 1 of the main body, the fixed blade 3 portion protrudes from the case 1 of the main body. Yes. If the outer peripheral side end of the fixed blade 3 is in contact with the opening 2, the fixed blade 3 is stored in the case 1 of the main body.

  The outlet 6 is cylindrical and is disposed on the same central axis 20 as the case 1 so as to penetrate the end face 1A, and one end of the outlet 6 extends beyond the end 7A of the space dividing plate 7 in the first swirl chamber 8. Protruding to Note that one end of the outlet 6 may not exceed the end 7A. And the opposite side protrudes out of the apparatus so that the duct can be connected.

  3 is a cross-sectional view taken along the line AA in FIG. 2, and includes a guide member 11 above the second intake port 5 at a position closer to the second intake port 5 than the through hole 10 in the second swirl chamber 9. The outer peripheral side is the lower end 11A, the inner peripheral side is the upper end 11B, the lower end 11A is disposed between the through hole 10 and the upstream end 5A, and the upper end 11B is the second intake port 5 shown in FIG. It is arranged beyond the center line 21 indicating the center position, and inclines toward the direction away from the through hole 10 in the flow path in the second swirl chamber 9 as it goes from the lower end 11A to the upper end 11B of the guide member 11.

  The guide member 11 determines the flow direction of the air flowing in from the second air inlet 5, and is the same direction as the swirling direction of the air current flowing in from the first air inlet 4, that is, the direction of the swirling air current in the first swirl chamber 8. The guide member 11 is arranged so as to be. In order to reliably turn the airflow from the second air inlet 5, the lower end 11A of the guide member 11 is arranged to be located upstream of the upstream end 5A in the turning direction (white arrow in FIG. 3). 11B is arranged so as to be located downstream of the lowermost portion of the curved surface of the space dividing plate 7 in the turning direction, and the distance from the central axis 20 is the farthest from the second intake port 5, and then the lower end 11A and the upper end 11B. Is arranged to be the smallest.

  The position of the upper end 11B is at the bottom of the curved surface of the space dividing plate 7 so that the airflow that has passed through the guide member 11 flows in the same direction as the direction of the swirling airflow in the first swirl chamber 8 along the curved surface of the space dividing plate 7. The position (center line 21 in FIG. 3), that is, the downstream side of the center position of the second intake port 5 is arranged.

  Further, the guide member 11 prevents the airflow flowing in from the second air inlet 5 from going directly to the through hole 10. Therefore, the tangent to the lower end 11A side of the guide member 11 and the tangent to the upper end 11B side are not parallel but have an angle. In the present embodiment, the lower end 11A side is rounded, but may be linear.

  The guide member 11 is in contact with the end face 1B of the case 1 and the space dividing plate 7, and in the present embodiment, the upper and lower sides of the guide member 11 are communicated spaces, but the inclination angle of the space dividing plate 7, that is, the first Depending on the degree of reduction in the cross-sectional area of the swirl chamber 8 toward the end surface 1B, the upper side of the guide member 11 may not be communicated as a flow path, and only the lower side may be a communicated space.

  The space dividing plate 7 is provided with a through-hole 10 which is an opening communicating the first swirl chamber 8 and the second swirl chamber 9 on the side surface. The through-hole 10 has a rotational direction of the swirling airflow generated in the first air inlet 4 at the portion where the swirling airflow (in the direction of the white arrow in FIG. 3) flows from top to bottom, that is, on the left side of the center line 21 in FIG. 3 on the upstream side of the upstream end 5A. This is because the foreign matter contained in the swirling airflow in the first swirling chamber 8 has a swirling component and flows into the second swirling chamber 9 from the through hole 10. This is to move quickly.

  Further, in the present embodiment, the through-hole 10 is opened to the end 7B of the space dividing plate 7. However, the through-hole 10 may not be opened to the end 7B, and both the end 7A and the end 7B are not opened. It may be opened (in this case, the space dividing plate 7 is in a state of being divided on the way).

  The opening area of the second intake port 5 is desirably about 0.5 to 3% with respect to the opening area of the opening 2 serving as the first intake port 4, and in this embodiment, the second intake port The opening area of the mouth 5 is about 1.2% with respect to the area of the opening 2. As described above, the second air inlet 5 is very small with respect to the opening area of the opening 2 serving as the first air inlet 4. This is because the airflow flowing in from the first air inlet 4 is the main air that is processed by this apparatus. When it becomes larger than 3%, the inflow from the second intake port 5 increases, and the air flow from the second swirl chamber 9 to the first swirl chamber 8 increases in the through hole 10 shown in FIG. It becomes difficult to move the separated foreign matter to the second swirl chamber 9 (detailed air flow and foreign matter movement will be described later). Further, the opening area of the second air inlet 5 may not be too small, and the separated foreign matter accumulates in the vicinity of the second air inlet 5, and the second air inlet 5 is an opening for discharging foreign matter. This is because it needs to be large enough to prevent clogging.

  The flow of the airflow in the cyclone separation device having the above configuration will be described.

  When the outlet 6 and the blower (not shown) are connected by a duct and the blower is operated, the inside of the case 1 becomes negative pressure, so that air flows from the first intake port 4 and the second intake port 5 communicating with the outside air. Flows in. However, as described above, the opening area of the second intake port 5 is 0.5 to 3% with respect to the opening area of the opening portion 2 where the first intake port 4 is located, so that most of the first intake port 4. Inflow from.

  As shown in FIG. 2, the air flowing in from the first air inlet 4 becomes a swirling airflow by the fixed blade 3, and proceeds in the direction of the end surface 1 </ b> B of the case 1 while swirling in the first swirling chamber 8. At this time, since the cross-sectional area of the first swirl chamber 8 is gradually reduced, the centrifugal force acting on the foreign matter contained in the swirl airflow becomes stronger. The traveling direction of the swirling airflow with respect to the central axis 20 is reversed in the vicinity of the end face 1B, passes through the vicinity of the center in the first swirling chamber 8 toward the outlet 6, and flows out of the apparatus.

  Further, since a part of the swirling airflow in the first swirling chamber 8 flows into the second swirling chamber 9 from the through hole 10, the swirling airflow in the same direction as the swirling airflow in the first swirling chamber 8 also in the second swirling chamber 9. Slightly occurs.

  The air flowing from the second intake port 5 is bent by the guide member 11 in the direction away from the through hole 10. That is, the swirl airflow is surely generated in the second swirl chamber 9 because it is bent in the same direction as the swirl airflow in the first swirl chamber 8 described above. The air flowing in from the second intake port 5 circulates in the second swirl chamber 9, enters the first swirl chamber 8 through the through hole 10, merges with the airflow in the first swirl chamber 8, and is out of the apparatus from the outlet 6. Spill to

  Next, the operation of separating foreign matter that has flowed into the apparatus will be described.

  Foreign matter (for example, small insects such as mosquitoes, fruit flies, mushroom flies, moths, etc.) that flow in with the air from the first air inlet 4 receives centrifugal force due to the swirling airflow in the first swirl chamber 8, and the space dividing plate 7 on the outer peripheral side. Go around the area. Since the foreign substance tries to move further outward while passing around the through hole 10, it moves from the first swirl chamber 8 to the second swirl chamber 9 through the through hole 10, that is, is separated. The second swirl chamber 9 is a space for receiving the separated foreign matter, that is, a separation chamber.

  Since the foreign matter has a larger mass than air, it is deposited near the second air inlet 5 which is the lower part in the second swirl chamber 9 due to the action of gravity. When the foreign matter is a small insect or the like, it is still alive immediately after being separated into the second swirl chamber 9, and therefore can float inside the second swirl chamber 9. However, since the swirl airflow is also generated in the second swirl chamber 9, the swirl force moves to the outer peripheral side of the second swirl chamber 9, and the return from the through hole 10 to the first swirl chamber 8 is not possible. It is suppressed.

  That is, since the swirling airflow is also generated in the second swirl chamber 9 that receives the foreign matter separated in the first swirl chamber 8, the separated foreign matter is prevented from returning to the first swirl chamber 8 again. Similarly, it is possible to prevent foreign matter flowing in from the second air inlet 5 from flowing into the first swirl chamber 8.

  Further, the second intake port 5 is also an opening for discharging foreign matter once stored in the second swirl chamber 9 to the outside of the apparatus. When the natural wind outside the apparatus is windless, as described above, air flows in from the second air inlet 5, so that no foreign matter comes out. However, as shown in FIG. 3, when natural wind blows outside the apparatus and the flow of natural wind near the second intake port 5 becomes a black arrow, the static pressure is reduced by Bernoulli's theorem. When the static pressure outside the apparatus is lower than that inside the apparatus at the second intake port 5 due to natural wind, the foreign matter is drawn out of the apparatus and discharged. In this apparatus, the foreign matter once stored in the second swirl chamber 9 is discharged to the outside by using natural wind in this way. Thereby, the maintenance of a cyclone separator becomes unnecessary.

  As described above, the first intake port 4 provided with the plurality of fixed blades 3 in the circular opening 2 on one end side of the case 1, and the lowermost portion in the gravity direction on the side of the case 1 opposite to the first intake port 4 The case 1 is divided into a first swirl chamber 8 and a second swirl chamber 9 by a space dividing plate 7, and the first swirl chamber 8 and the second swirl chamber 9 are divided into the space dividing plate 7. A communicating through hole 10 is provided, the main flow flows in from the first intake port 4, flows through the first swirl chamber 8 to the outflow port 6, and a part of the air flows in from the second intake port 5 to enter the second swirl chamber 9. By passing through the through hole 10 to the first swirl chamber 8 and flowing into the outlet 6, the foreign matter that flows in with the air from the first intake port 4 is separated by the first swirl chamber 8 and second through the through hole 10. Move to swirl chamber 9. The second swirl chamber 9 has a role of a separation chamber for receiving the foreign matter separated in the first swirl chamber 8. That is, the cyclone separation device of the present embodiment has a configuration in which a separation chamber is provided around the first swirl chamber 8, and the air in the second swirl chamber 9, which is a separation chamber, is a swirling airflow. Thereby, it can suppress that the separated foreign material and the foreign material which flowed in from the 2nd inlet port 5 flow into the 1st turning chamber 8 from the through-hole 10, and the isolation | separation performance is improving.

  As described above, since the swivel / separation space is provided in the cylindrical case 1, the cyclone separation device can be configured in a compact manner and the size is reduced. In addition, since it is cylindrical in appearance, it can also enhance the sense of unity with the building.

  In addition, this device is assumed to be used as a hood for preventing wind and rain at the air inlet portion of the outer wall of the building. In other words, it is a hood with a function to separate foreign substances.

  If it rains when installed on the outdoor wall, rainwater flows in from the first air inlet 4, but since the first air inlet 4 is open 360 degrees, it falls down as it is. Since the end of the outlet 6 protrudes from the first air inlet 4 toward the first swirl chamber 8, rainwater does not enter the outlet 6 directly. Even if it flows into the apparatus, the outflow port 6 exists at the center of the end surface of the case 1, so that there is no possibility that rainwater will enter the downstream side of the outflow port 6. Even if water splashes into the case 1, it can be attached to the space dividing plate 7 by the swirling airflow. In the present embodiment, since the space dividing plate 7 is inclined toward the first air inlet 4, rainwater adhering to the space dividing plate 7 flows out to the first air inlet 4.

  Even when strong winds blow, the first intake port 4 is open 360 degrees, so that the wind can escape. Further, the wind does not directly flow into the outlet 6 due to the structure described above.

  In other words, this device has a function of separating foreign matters in a compact manner, and reliably suppresses the original function as a hood that prevents wind and rain.

(Embodiment 2)
A description of portions having the same configuration and operation as those of the first embodiment will be omitted.

  FIG. 4 is a cross-sectional view showing the present embodiment. The space dividing plate 7 is arranged so that the cross-sectional area crossing the cylindrical central axis 20 of the case 1 of the first swirl chamber 8 and the second swirl chamber 9 does not change from the end surface 1A to the end surface 1B of the case 1 of the main body. Uniformly circulates and prepares.

  Thereby, the distance of the space division board 7 and the outflow port 6 can be ensured, and it can suppress that the foreign material contained in the airflow which swirls the 1st whirling chamber 8 flows out from the outflow port 6. FIG.

  5 is a cross-sectional view taken along the line BB in FIG.

  The guide member 11 is disposed in the vicinity of the second intake port 5 in the second swirl chamber 9 from the end surface 1B over the second intake port 5 to the fixed blade 3 portion. The lower end 11A of the guide member 11 is disposed so as to be located downstream of the upstream end 5A in the turning direction, and the upper end 11B is located upstream of the lowermost portion of the curved surface of the space dividing plate 7 in the turning direction. The second intake port 5 is the farthest from the center axis 20, and the lower end 11A and the upper end 11B are then the smallest.

  As a result, even when the space dividing plate 7 is cylindrical, the airflow flowing from the second intake port 5 can be swirled in the same direction as the direction of the swirling airflow in the first swirl chamber 8. The movement of the foreign matter in the intake port 5 from the through hole 10 into the first swirl chamber 8 is suppressed.

  Also in the present embodiment, the main flow flows from the first intake port 4 and flows through the first swirl chamber 8 to the outflow port 6, and part of the air flows from the second intake port 5 and passes through the second swirl chamber 9. In this configuration, the foreign matter that flows in along with the air from the first air inlet 4 is separated in the first swirl chamber 8 and is second swirled from the through hole 10 by making the flow into the first swirl chamber 8 through the through hole 10 and the outlet 6. Move to chamber 9. The second swirl chamber 9 has a role of a separation chamber for receiving the foreign matter separated in the first swirl chamber 8. That is, this apparatus has a configuration in which a separation chamber is provided around the first swirl chamber 8, and the air in the second swirl chamber 9, which is a separation chamber, is a swirling airflow, so that the separated foreign matter In addition, it is possible to suppress the foreign matter flowing in from the second air inlet 5 from flowing into the first swirl chamber 8 from the through hole 10, and the separation performance is improved.

  As described above, since the swivel / separation space is provided in the cylindrical case 1, the apparatus can be configured in a compact size and can be made compact. In addition, since it is cylindrical in appearance, it can also enhance the sense of unity with the building.

  In addition, this device is assumed to be used as a hood for preventing wind and rain at the air inlet portion of the outer wall of the building. In other words, it is a hood with a function to separate foreign substances.

(Embodiment 3)
A description of portions having the same configuration and operation as those of the first embodiment will be omitted.

  FIG. 6 is an external perspective view showing the present embodiment, and the upper portion of the opening 2 is partially closed to provide a closed portion 22.

  FIG. 7 is a sectional view cut along the central axis 20. As shown in FIG. 7, in the case 1, the case side end portion 23 of the outflow port 6 protrudes to a position overlapping the space dividing plate 7, and the case side end portion 23 has a rib 24 that goes around the outside. It has. That is, the case side end 23 is provided with a flange. In the present embodiment, the rib 24 is a bowl-shaped flat plate. However, the rib 24 may have a thickness in the axial direction of the central axis 20, and the case side end portion 23 may be formed in an arc shape, that is, a trumpet shape. Good.

  The blocking portion 22 is located on the upper side of the side surface of the case 1 on the opposite side of the second intake port 5 by 180 degrees. Thereby, even if it rains on this apparatus, the quantity of the rainwater which flows in into this apparatus by the obstruction | occlusion part 22 can be reduced.

  The rib 24 can prevent the rainwater flowing in from the opening 2 from flowing into the outlet 6 from the case side end 23 along the surface when the rainwater adheres to the cylindrical outer surface of the outlet 6. The rib 24 may have another shape as described above as long as the traveling direction of water droplets traveling on the outer cylindrical surface of the outlet 6 changes in a direction away from the central axis 20 on the outer cylindrical surface.

  In the present embodiment, the closed portion 22 and the rib 24 can suppress rainwater flowing in from the opening 2 from exiting from the outlet 6.

  In addition, the rib 24 suppresses the occurrence of turbulent flow at the case side end 23 when the airflow flows from the first swirl chamber 8 to the outlet 6, thereby reducing the pressure loss of the apparatus. .

  The cyclone separation device according to the present invention is configured to reduce the size of the device and reduce the size and to improve the design, while separating the foreign matter and returning it to the outdoors, and also preventing the entry of wind and rain. Therefore, it is useful as an outdoor hood or the like attached to the ventilation opening (supply side) of the building.

DESCRIPTION OF SYMBOLS 1 Case 1A End surface 1B End surface 2 Opening part 3 Fixed blade 4 1st inlet port 5 2nd inlet port 5A Upstream side end part 6 Outflow port 7 Space dividing plate 7A End part 7B End part 8 1st turning chamber 9 2nd turning chamber DESCRIPTION OF SYMBOLS 10 Through-hole 11 Guide member 11A Lower end 11B Upper end 20 Center axis 21 Center line 22 Closure part 23 Case side edge part 24 Rib 25 Cylindrical wall

Claims (5)

A cylindrical case into which an airflow flows, a first intake port formed with an opening having at least a part of a side surface opened at one end side of the case, and a plurality of fixed vanes arranged along the opening; An outlet is provided on one end side of the case on the same side as the fixed blade, and the airflow passing through the first air inlet flows into the case as an airflow having a swirling component by the fixed blade, and from the outlet In the cyclone separating apparatus in which the airflow flows out of the case, the other end side of the case can be positioned at the lowermost side with the central axis of the cylindrical case disposed horizontally on the side surface of the case. Two air inlets and a space dividing plate that is divided into an inner circumferential first swirl chamber and an outer circumferential second swirl chamber inside the case, and the space dividing plate includes the first swirl chamber And the second swirl chamber The first intake port communicates with the outlet through the first swirl chamber, and the second intake port communicates with the second swirl chamber and the through hole. A cyclone separator that communicates with the outlet. The space dividing plate has a cylindrical wall, and an end portion of the cylindrical wall on the other end side of the case is in contact with an inner surface of the case, and is divided into the first swirl chamber and the second swirl chamber. The cyclone separator according to claim 1. The first swirl chamber is provided around the space dividing plate so that a cross-sectional area of the case gradually decreases from one end side to the other end side of the case, and the second intake port is provided on a side surface of the case. And having an upstream end positioned upstream with respect to the direction of rotation of the swirling airflow generated at the first air inlet, and the through hole is divided into two parts by a plane including the central axis of the case and the lowermost part The second swirl is disposed on the one side, upstream of the upstream end with respect to the rotational direction of the swirling airflow generated at the first intake port, in the vicinity of the second intake port. A plate-like guide member is provided in the room, and the guide member is located on the outer peripheral side of the case and extends in the axial direction of the case from the other end of the case toward the one end side, beyond the upstream end. The outer peripheral side and the other end of the case located on the inner peripheral side of the case An inner peripheral side extending toward the space dividing plate, and at the other end of the case, the outer peripheral side is disposed between the through hole and the upstream end. And the inner peripheral side is disposed downstream of the center position of the second intake port with respect to the rotational direction of the swirling air flow generated at the first intake port, and the flow in the second swirl chamber is The cyclone separator according to claim 1, wherein the side on the inner peripheral side is arranged in a direction in which the distance from the through hole is longer than the side on the outer peripheral side. The cross-sectional area of the first swirl chamber is provided around the space dividing plate so as not to change from one end side to the other end side of the case, and the second intake port is provided on the side surface of the case. An upstream end located upstream with respect to the direction of rotation of the swirling airflow generated at the first air inlet, and the through hole is divided into two by a plane including the central axis of the case and the lowermost portion On the upstream side of the upstream end with respect to the rotational direction of the swirling airflow generated at the first intake port, and in the second swirl chamber in the vicinity of the second intake port. A plate-shaped guide member is provided, and the guide member is located on the outer peripheral side of the case and extends in the axial direction of the case over the second intake port from the other end of the case toward the one end side. The other end of the case, the front side The outer peripheral side is disposed between the through hole and the upstream end, and the inner peripheral side is the second intake air with respect to the rotational direction of the swirling airflow generated at the first intake port. It is arranged downstream from the center position of the mouth, and in the flow path in the second swirl chamber, the inner peripheral side is arranged in a direction in which the distance from the through hole is farther than the outer peripheral side. The cyclone separator according to claim 1. The outlet has a cylindrical shape and has a case side end protruding into the case. The position of the case side end is a position that overlaps the space dividing plate in a side view. The cyclone separator according to claim 1, wherein a rib is provided in a direction extending over the circumference.

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