JP2008104559A - Dust collecting apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a dust collecting apparatus which is reduced in size and at the same time, has an improved suction performance by preventing the deterioration resulting from the clogging of a dust and dirt separating means by fine refuse of a fine dust chamber from occurring. <P>SOLUTION: This dust collecting apparatus has a first dust and dirt separating means 33 which separates comparatively large refuse from air, a second dust and dirt separating means 34 which separates fine refuse from air on the downstream side of the first dust and dirt separating means, and the fine dust chamber 36 for accumulating the fine refuse which has been separated by the second dust and dirt separating means. In a vicinity of the fine dust chamber 36, a flying-up air stream preventing means 40 which closes a part of a flow passage between the first and second dust and dirt separating means 33 and 34 is installed. Thus, the flying-up air stream preventing means 40 pushes up the stream of air in the opposite direction from the fine dust chamber 36, and therefore, a constitution that a distance to the fine dust chamber 36 is made larger is not required, and the apparatus can be reduced in size. The direction of the air flow is changed upward, and the air becomes hard to flow into the fine dust chamber 36. Thus, a pressure loss can be reduced, and the suction performance can be improved. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a dust collecting device such as an electric vacuum cleaner having dust separating means for separating dust and air.

  Conventionally, a vacuum cleaner as shown in FIG. 8 is known as this kind of dust collector (for example, refer patent document 1).

  This is because a suction port 2 through which air containing dust flows into the device main body 1, a net-like filter 3 that separates relatively large dust and air, and finer dust and air are separated downstream of the filter 3. Compared with the flow path between the filter 3 and the filter 4 below the filter 3, the fine pleated filter 4, the fine dust chamber 5 in which fine dust separated by the filter 4 is stored, and the filter 3. Thus, the airflow prevention wall 6 rises to a position where a relatively narrow gap a is provided between the filter 4 and the filter 4 so that the opening cross-sectional area becomes narrow.

  In the above configuration, the air containing the dust sucked from the suction port 2 first passes through the filter 3 with relatively large dust removed, and the finer dust is removed by the filter 4 so that only the air passes. At this time, fine dust adhering to and accumulating on the filter 4 falls into the fine dust chamber 5 by operating a dust removing mechanism (not shown). Here, the air flow prevention wall 6 is arranged with a relatively narrow gap a between the filter 4 and the air passing through the filter 3 is less likely to go in the direction of the fine dust chamber 5. It is configured to prevent fine dust accumulated in the dust chamber 5 from being swung up by the flow of the wind and adhering to the filter 4 again.

  Moreover, the vacuum cleaner as shown in FIG. 9 is also known (for example, refer patent document 2).

  This is because the first dust separation means 12 having a conical shape for separating relatively large dust and air using a difference in inertia force between dust and air in the dust box 11 detachable from the device main body, and the first A dust collection chamber 13 for storing relatively large dust separated by the dust separation means 12 and a pleat filter for separating fine dust and air downstream of the first dust separation means 12 and the dust collection chamber 13. And the like, and a fine dust chamber 15 for storing fine dust separated by the second dust separation means 14 below the second dust separation means 14. . A relatively narrow gap b is provided between the wall surface 16 of the dust collecting chamber 13 and the second dust separating means 14 to communicate with the fine dust chamber 15.

  In the above configuration, air containing dust is separated into air containing a relatively large dust (arrow C) and air containing a finer dust (arrow D) by the first dust separating means 12 having a conical shape. This is because relatively large dust advances straight due to its own inertial force, and finer dust is discharged outside the first dust separating means 12 while rotating in the circumferential direction of the cone. The air C containing relatively large dust is guided to the dust collection chamber 13, and the dust exits directly into the dust collection chamber 13, and the air exits from the opening 17 provided in the upper portion of the dust collection chamber 13 to remove fine dust. Together with the air D contained, it is guided to the second dust separation means 14.

Fine dust is removed by the second dust separating means 14 and only air is allowed to pass downstream. At this time, the fine dust adhering to and accumulating on the second dust separation means 14 falls into the fine dust chamber 15 by operating a dust removal mechanism (not shown). Here, the wall 16 of the dust collection chamber 13 is disposed with a relatively narrow gap b from the second dust separation means 14, so that the air that has passed through the first dust separation means 12 and the dust collection chamber 13 are arranged. Since the air coming out of the opening 17 provided in the upper part of the air does not easily travel in the direction of the fine dust chamber 15, the fine dust accumulated in the fine dust chamber 15 is raised by the flow of the wind, and the second dust It is configured to prevent the separation means 14 from adhering again.
Japanese Utility Model Publication No. 55-25022 Japanese Patent No. 3488877

  However, in the conventional configuration, the air flow spreads as shown by the arrow E in FIG. 8 and the arrow F in FIG. 9, so that the fine dust accumulated in the fine dust chambers 5 and 15 does not rise. Has a problem that the size of the equipment is increased because it is necessary to keep the fine dust chambers 5 and 15 away from the air flows E and F.

  Moreover, in the thing of patent document 2, when the opening part 17 is further provided in addition to the upper part of the dust collection chamber 13, the flow which does not pass over the wall surface 16 will arise, and air will flow into the fine dust chamber 15 and a fine dust chamber Since the fine dust collected in 15 rises, the opening 17 can be provided only in the upper part of the dust collection chamber 13, and the pressure loss becomes high and the suction performance as a device is lowered. Was.

  The present invention solves the above-mentioned conventional problems, and provides a dust collecting device that improves the suction performance by reducing the size of the device and preventing the dust separating means from being clogged by fine dust in the fine dust chamber. For the purpose.

  In order to solve the above-described conventional problems, a dust collecting device according to the present invention is a first device that separates a relatively large dust and air disposed in a suction path to the blower and a device main body that contains a blower for suction. , A second dust separation means for separating fine dust and air downstream from the first dust separation means, and the second dust separation means provided below the second dust separation means. A fine dust chamber for storing finer dust separated by the means, and a part of a flow path between the first dust separation means and the second dust separation means in the vicinity of the fine dust chamber. Is provided with a means to prevent air flow up.

  As a result, the air flow prevention means pushes up the air flow once upward, that is, in the direction opposite to the fine dust chamber, and the air flow moves away from the fine dust chamber, so that the distance between the fine dust chamber and the air flow is greatly separated. Therefore, the device can be downsized. Even if an opening is provided in addition to the upper part of the dust collection chamber, the airflow is diverted upward by the airflow prevention means, so that it is difficult for air to flow into the fine dust chamber. And the suction performance of the device body can be improved.

  The dust collecting device of the present invention can reduce the size of the device and prevent the dust separating means from being clogged by fine dust in the fine dust chamber, thereby improving the suction performance.

  According to a first aspect of the present invention, there is provided a device main body including a suction fan, a first dust separation means disposed in a suction path to the blower to separate relatively large dust and air, and the first dust. A second dust separating means for separating fine dust and air downstream of the separating means; and a fine dust provided below the second dust separating means for storing fine dust separated by the second dust separating means. And a soaring airflow preventing means for closing a part of the flow path between the first dust separating means and the second dust separating means is provided in the vicinity of the fine dust chamber. This is a dust collector. As a result, the air flow prevention means pushes up the air flow once upward, that is, in the direction opposite to the fine dust chamber, and the air flow moves away from the fine dust chamber, so that the distance between the fine dust chamber and the air flow is greatly separated. Therefore, the device can be downsized. Even if an opening is provided in addition to the upper part of the dust collection chamber, the airflow is diverted upward by the airflow prevention means, so that it is difficult for air to flow into the fine dust chamber. And the suction performance of the device body can be improved.

  The second invention has, in particular, a dust collection chamber for collecting relatively large garbage separated by the first dust separating means in the device main body in the first invention, wherein the first dust separating means comprises: By using the filter disposed in the dust collecting chamber, the first dust separating means also serves as the dust collecting chamber, and the apparatus can be downsized.

  According to a third aspect of the present invention, in particular, in the first or second aspect of the invention, the soaring air flow preventing means is provided to a position higher than the lower end of the second dust separating means, so that Since the air flow spread in step 2 can also pass through the second dust separating means, by preventing the air flow from flowing into the fine dust chamber, the fine dust accumulated in the fine dust chamber rises, It is possible to reduce the adhesion of fine dust to the second dust separation means.

  According to a fourth aspect of the invention, in particular, in the first or second aspect of the invention, the soaring airflow prevention means is at the same height as the lower end of the second dust separation means or a position lower than the lower end of the second dust separation means. By being provided, it is possible to reduce the pressure loss and improve the suction performance of the device main body by reducing the air flow that is hindered by the airflow prevention means.

  According to a fifth aspect of the invention, in particular, in any one of the first to fourth aspects of the invention, the soaring airflow prevention means is in the direction of the flow path between the first dust separation means and the second dust separation means. On the other hand, by providing the position where there is no gap between the second dust separating means, even if the rising airflow preventing means is lowered, the air that has spread downstream of the rising airflow preventing means is not removed. Since the dust separating means can be passed, it is possible to prevent soaring and reduce pressure loss.

  According to a sixth aspect of the present invention, in particular, in any one of the first to fifth aspects of the present invention, the soaring airflow prevention means is at the same height as the upper end of the first dust separation means or from the upper end of the first dust separation means. Since the air that has passed through the first dust separating means can be effectively pushed upward, that is, in the direction opposite to the fine dust chamber, the air flows into the fine dust chamber even if the device is downsized. Can be prevented from flowing in.

  According to a seventh aspect of the invention, in particular, in any one of the first to fifth aspects of the invention, the rising airflow prevention means is provided up to a position lower than the upper end of the first dust separation means. It is possible to reduce the air flow between the dust separating means and the second dust separating means from being hindered by the airflow preventing means and to reduce the pressure loss.

  In an eighth aspect of the present invention, in particular, in any one of the first to seventh aspects, the soaring airflow preventing means has a notch portion, thereby reducing pressure loss and preventing fine dust from rising. it can. That is, the fine dust adhering to the second dust separating means is not completely uniformly distributed, and there is a bias depending on the flow path configuration in the device main body. By providing a notch in the soaring air flow preventing means in the vicinity of a small part, pressure loss can be reduced and fine dust can be prevented from rising.

  According to a ninth aspect of the invention, in particular, in the eighth aspect of the invention, the notch portion is provided in a portion where the air pressure in the vicinity of the soaring airflow prevention means is lowered, so that the air flow to the second dust separation means By uniforming, it is possible to reduce pressure loss and to reduce the bias of fine dust adhesion.

  According to a tenth aspect of the invention, in particular, in the eighth aspect of the invention, the notch portion is provided in a portion where the air pressure in the vicinity of the soaring air flow preventing means is increased, whereby pressure loss can be reduced.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the present embodiment.

(Embodiment 1)
1 to 5 illustrate a vacuum cleaner as a dust collecting device in Embodiment 1 of the present invention.

  In FIG. 1, a nozzle 22 that sucks dust together with air and a hose 23 that connects the instrument body 21 and the nozzle 22 are connected to the device body 21, and the dust is collected in the device body 21 by separating air and dust. A dust box 24 is provided so as to be separable from the device main body 21. A blower (fan motor) 25 is provided downstream of the dust box 24 in the device main body 21.

  Next, the configuration in the dust box 24 will be described with reference to FIG.

  The dust box 24 is provided with an inlet 31 for introducing dust and air sucked by the nozzle 22 into the dust box 24 and a mesh-like filter 32. By the filtering action of the filter 32, relatively large dust and air The first dust separating means 33 for separating the first dust separating means 33 and the second dust separating means 34 constituted by a pleated filter or the like for separating fine dust and air that have passed through the first dust separating means 33 by the filtering action. have. The first dust separation means 33 also functions as a dust collection chamber for storing relatively large dust. In the present embodiment, the first dust separation means 33 and the second dust separation means 34 are configured to separate dust and air by a filtering action, but for example, a cyclone system that separates by a centrifugal force action, Other separation means such as an inertia separation method using a difference in inertia force between dust and air may be used.

  Moreover, as shown in FIG. 3, the dust box main body 35 and the second dust separation means 34 can be separated. By separating the second dust separating means 34 from the dust box main body 35, the inside of the dust box main body 35 and the second dust separating means 34 can be maintained.

  As shown in FIGS. 2 and 3, the dust box main body 35 has a fine dust so that the second dust separation means 34 is positioned below the second dust separation means 34 when the second dust separation means 34 is attached to the dust box main body 35. The chamber 36 is provided, and the fine dust adhered to the second dust separating means 34 while using the dust collecting device is adhered to the fine dust by hitting the gravity or the second dust separating means 34 after using the dust collecting device. It is the structure which collects what was dropped by the dust removal mechanism (not shown) which drops.

  Further, above the fine dust chamber 36, a throttle portion 37 that obstructs the flow of air to the fine dust chamber 36 is inclined so that dust on the throttle portion 37 slides down into the fine dust chamber 36. Is provided. Here, by providing the throttle portion 37 not on the second dust separation means 34 but on the dust box main body 35 side, the length of the throttle portion 37 can be shortened, and the second dust separation means 34 is changed to the dust box main body portion. When removed from 35, the risk of breaking due to a drop impact or the like can be reduced. Moreover, when providing in the dust box main-body part 35, it is not restricted to the structure which inclines downward toward back from the back like this Embodiment, As shown in FIG. Various forms are selected, such as tilting downward, providing an inclined part from the front and rear as shown in FIG. 4B, and nesting the inclined part from the front and rear as shown in FIG. 4C. be able to. Even in these cases, the same effect can be obtained by satisfying the condition that the dust placed on the throttle portion 37 is inclined so as to slide down into the fine dust chamber 36 and that the clearance for the dust to enter the fine dust chamber 36 is satisfied. be able to.

  The fine dust chamber 36 is divided into a plurality of rooms by a partition plate 38 as shown in FIG. Similarly, as shown in FIG. 3, partition ribs 39 are also provided below the second dust separation means 34, and when the second dust separation means 34 is attached to the dust box main body 35, the partition plate 38 and the partition plate 38 are separated. The ribs 39 are aligned at the same position, so that a wind flow (arrow G1) across each room is unlikely to occur.

  The soaring airflow preventing means 40 is located at a position that blocks a part of the flow path between the first dust separating means 33 and the second dust separating means 34 and upstream of the fine dust chamber 36. It is provided in a form that extends the wall surface. The airflow prevention means 40 is a plate-like one, but the shape and member configuration are not limited to those shown in the figure.

  About the dust collector comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  When the user turns on a switch (not shown), the blower 25 starts operating, and the inside of the device main body 21 is set to a negative pressure, thereby starting to suck dust and air from the nozzle 22. The dust and air sucked from the nozzle 22 pass through the hose 23 and enter the dust box 24 through the inlet 31.

  The dust and air that have entered the dust box 24 are first separated into relatively large dust and air by the first dust separation means 33. This is due to the filtering action that relatively large dust cannot pass through the mesh filter 32 provided in the first dust separation means 33.

  The relatively large dust separated by the first dust separation means 33 is configured to be stored in the first dust separation means 33 as it is. Thus, the first dust separation means 33 also functions as a dust collection chamber for storing relatively large dust, so that the size of the apparatus can be reduced, and the first dust separation means 33 collects the dust. Since no means for transferring dust to the dust chamber is required, the configuration can be simplified.

  Here, when the wall surface on the downstream side of the first dust separating means 33, that is, the second dust separating means 34 side is used as the airflow preventing means 40, the side surface of the dust collecting chamber of the first dust separating means 33 or If the filter 32 is provided on the upstream surface, the wind flows into the fine dust chamber 36 through the side of the dust collecting chamber of the first dust separating means 33, so that fine dust rises and enters the second dust separating means 34. Therefore, the filter 32 can be provided only on the upper surface of the dust collecting chamber of the first dust separating means 33, the pressure loss becomes high, and the suction force of the dust collecting device becomes weak. In addition, since dust in the dust collection chamber 33 rises up and adheres to the filter 32 during use, if the filter 32 is provided only on the upper surface, the filter 32 is immediately closed, requiring frequent care. .

  However, when it is configured to prevent fine dust accumulated in the fine dust chamber 36 from adhering to the second dust separation means 34 by the soaring airflow prevention means 40 as in the present embodiment, the filter 32 is It is not necessary to have a configuration provided only above the first dust separation means 33, and the soaring airflow prevention means 40 may be configured such that the filter 32 is provided also on the upstream side surface, the downstream side surface, and the side surface of the first dust separation means 33. As a result, the airflow is redirected upward, so that it is difficult for the wind to flow into the fine dust chamber 36, so that it is possible to obtain the effect of preventing the fine dust from rising. Therefore, since the total area of the filter 32 can be increased, the pressure loss can be reduced. Furthermore, even if the first dust separation means 33 also serves as a dust collection chamber, the total area of the filter 32 is large, so even if dust accumulated in the dust collection chamber rises and blocks a part of the filter 32, Since the wind can flow through the unblocked portion, it is possible to avoid the pressure loss from greatly increasing and the suction force of the dust collecting device from rapidly decreasing.

  Fine dust and air that have passed through the first dust separation means 33 are swung up as shown by an arrow H in FIG. 2 and are turned upward, that is, in a direction opposite to the fine dust chamber 36. . Further, fine dust and air that have passed through the filter 32 provided on the upper part of the first dust separation means 33 are pushed upward by the flow of the arrow H as shown by the arrow I in FIG. In this way, by effectively moving the air flow away from the fine dust chamber 36, it is not necessary to provide the fine dust chamber 36 at a large distance downward in order to keep the fine dust chamber 36 away from the air flow. Miniaturization can be realized.

  The soaring airflow preventing means 40 is provided up to a position higher than the upper end of the filter 32 provided on the other side than the upper surface of the first dust separating means 33 by a distance j. As a result, it is possible to prevent the wind passing through the filter 32 on the downstream side of the first dust separation means 33 from flowing up and flowing down into the fine dust chamber 36 without hitting the airflow prevention means 40. When the fine dust chamber 36 is provided at a position sufficiently away from the air flow, the soaring air flow preventing means 40 may be provided at the same height as the upper end of the filter 32.

  On the contrary, as shown in FIG. 5, the soaring airflow preventing means 40 may be provided up to a position lower than the upper end of the filter 32 provided on the area other than the upper surface of the first dust separating means 33 by a distance k. good. Even in this case, the wind passing above the filter 32 as shown by the arrow L is pushed up by the wind turned upward by the soaring airflow preventing means 40 shown by the arrow M, so that the case of FIG. However, if the fine dust chamber 36 is sufficiently away from the air flow, it is possible to prevent the fine dust that has accumulated in the fine dust chamber 36 from rising. Further, when the soaring air flow preventing means 40 is provided at a height lower than the upper end of the filter 32 as shown in FIG. 5, the pressure loss due to the wind hitting the soaring air current preventing means 40 can be reduced. It is possible to obtain an effect such as reducing pressure loss by securing a space above the airflow prevention means 40.

  The air containing fine dust that could not be completely separated by the first dust separation means 33 is separated into fine dust and air by the second dust separation means 34 constituted by a pleated filter. Similar to the first dust separation means 33, this is due to a filtering action in which fine dust is caught on the pleated filter and only air passes therethrough. And it has the structure that only air is sucked into the blower 25.

  Here, as shown in FIG. 2, by providing the soaring airflow prevention means 40 to a position higher than the lower end of the second dust separation means 34 by a distance n, the flow of the wind soars as indicated by an arrow O. Even if it spreads downward beyond the airflow prevention means 40, the wind passes through the pleated filter 34 that is the second dust separation means 34 without hitting the lower space of the second dust separation means 34. Wind can be prevented from flowing into the chamber 36.

  Also, as shown in FIG. 2, by providing the airflow prevention means 40 at a position where there is almost no gap between the second dust separation means 34, the movement distance in the downward direction of the wind flow indicated by the arrow O is increased. It can be shortened compared with the case where the gap is open. Therefore, while preventing the fine dust from adhering to the second dust separation means 34 due to the soaring of the fine dust accumulated in the fine dust chamber 36, the pressure loss caused by the wind hitting the soaring air flow preventing means 40 can be reduced. It is possible to obtain an effect such as reducing pressure loss by securing a space above the airflow prevention means 40.

  When the purpose is to reduce the pressure loss as much as possible, as shown in FIG. 5, the airflow prevention means 40 has a height lower than the second dust separation means 34 by a distance p, or the second dust separation. It is good also as a structure provided to the same height as the means 34. FIG. Even in this case, since the air flow is pushed upward by the soaring airflow prevention means 40, as shown by the arrow L in FIG. 5, the airflow hitting the lower wall surface of the second dust separation means 34 is small. In addition, since most of the airflow that has been struck is sucked into the second dust separation means 34 as indicated by the arrow Q, the airflow prevention means 40 is lifted up by the second dust separation means 34 as shown in FIG. Although not as high as the case where the position is higher than the lower end, the pressure loss can be reduced while obtaining the effect of reducing the rise. In the case where the throttle portion 37 is provided at the upper portion of the fine dust chamber 36 as in the present embodiment, the airflow prevention means 40 is raised more than the lower end of the second dust separation means 34 as shown in FIG. Even when it is provided only at a low position, it is difficult for the air flow to flow into the fine dust chamber 36, so that it is possible to prevent fine dust from adhering to the second dust separating means 34 due to the rise of fine dust accumulated in the fine dust chamber 36. Becomes easier.

  When the user turns off a switch (not shown), the blower 25 stops its operation and stops sucking dust. Fine dust adhering to the second dust separation means 34 falls into a fine dust chamber 36 provided below the second dust separation means 34 by gravity or a dust removal mechanism (not shown), It is stored in the chamber 36. A throttle part 37 is provided in the upper part of the fine dust chamber 36. However, since the throttle part 37 is inclined, dust falling on the throttle part 37 slides down the slope of the throttle part 37, It is configured to enter the fine dust chamber 36.

  When the user turns on a switch (not shown) again, the air blower 25 operates to generate airflow in the dust box 24 again. When this airflow flows into the fine dust chamber 36, the fine dust accumulated in the fine dust chamber 36 rises and adheres to the second dust separation means 34. Therefore, the second dust separation means 34 is clogged. As a result, the suction force of the dust collector decreases. However, in the present embodiment, since the airflow prevention means 40 prevents the airflow from flowing into the fine dust chamber 36, the dust collecting device is configured to prevent the dust accumulated in the fine dust chamber 36 from rising. It is difficult for the suction force to decrease.

  Further, in the present embodiment, in addition to the soaring air flow preventing means 40, a fine dust soaking prevention measure for preventing fine dust in the fine dust chamber 36 from flying up and adhering to the second dust separating means 34 is provided. ing.

  One is the throttle portion 37 described above, which narrows the gap to the fine dust chamber 36 to the extent that dust enters, thereby making it difficult for the airflow to flow into the fine dust chamber 36, and for the fine dust in the fine dust chamber 36. This is to prevent soaring.

  Further, since the atmospheric pressure in the dust box 24 varies depending on the location, a flow of a lateral airflow as viewed from the device main body 21 is also generated due to the atmospheric pressure difference as indicated by arrows G1 and G2 in FIG. Since the flow of the airflow in the lateral direction also causes fine dust in the fine dust chamber 36 to rise, it is necessary to take measures to prevent them.

  First, the air flow G1 flowing in the lateral direction over the fine dust chamber 36 is provided in the fine dust chamber 36 when the second dust separating means 34 is attached to the dust box main body 35 as described above. By adopting a configuration in which the partition plate 38 and the partition rib 39 provided in the lower part of the second dust separation means 34 are aligned at the same position, the wind G1 across the respective rooms is prevented from being generated.

  Next, for the airflow G2 flowing under the fine dust chamber 36, that is, in the gap below the partition plate 38, as shown in FIG. 2, the waste lid 41 constituting the bottom of the fine dust chamber 36 is made of rubber. The sheet 42 is provided and sealed so that there is no gap in the lower part of the partition plate 38, so that the wind G2 across each room does not occur.

  In addition, if the width of each of the fine dust chambers 36 divided by the partition plate 38 is too wide, a difference in atmospheric pressure is generated in each of the divided rooms, and so-called fine dust rises due to the lateral wind. Since a problem arises, the room width of each of the fine dust chambers 36 divided by the partition plate 38 is 40 mm or less, more preferably 20 mm or less.

  If dust accumulates in the dust collection chamber 33 or the fine dust chamber 36, the user takes out the dust box 24 from the device main body 21 and opens the disposal door 41 that forms the bottom of the dust box 24, whereby the first dust separation is performed. The dust collection chamber of the means 33 and the bottom of the fine dust chamber 36 are opened, and the waste accumulated in the respective chambers is discarded.

  Here, the space surrounded by the first dust separation means 33, the airflow prevention means 40 and the disposal door 41 is used as the second fine dust chamber 43, and the second dust separation means 34 is used. When the adhering fine dust is dropped by the dust removing means vigorously, the dust falls into the second fine dust chamber 43. By opening the disposal door 41, the dust is collected in the dust collecting chamber 33 and the fine dust chamber 36. It is good also as a structure discarded with garbage. Such a configuration is particularly effective for reducing the pressure loss when the soaring air flow preventing means 40 is lower than the first dust separating means 33 or the second dust separating means 34 or when the soaring air current preventing means 40 is used. In a position where the distance from the second dust separating means 34 is not far away, or when the soaring air flow preventing means 40 is inclined toward the second dust separating means 34. This is effective because fine dust that jumps over the airflow prevention means 40 and easily enters between the first dust separation means 33 and the airflow prevention means 40 can be disposed of with a simple configuration. is there.

  As described above, in the present embodiment, the rising airflow preventing means 40 is provided at a position where a part of the flow path between the first dust separating means 33 and the second dust separating means 34 is blocked. Thus, by preventing the flow of airflow into the fine dust chamber 36, the fine dust accumulated in the fine dust chamber 36 is swung up by the airflow flowing in the dust box 24 and adheres to the second dust separation means 34, The second dust separation means 34 is clogged and the pressure loss increases, thereby preventing the problem that the suction force of the dust collecting device is reduced.

(Embodiment 2)
6 and 7 show a dust collector in Embodiment 2 of the present invention.

  The present embodiment is different from the first embodiment in that the soaring airflow preventing means 52 has a notch 53 and the soaring airflow preventing means 52 is configured to be removable from the dust box 51. It is a point. The others are the same as those of the first embodiment shown in FIGS.

  As shown in FIG. 6, in order to improve the storage property in the device main body 50, the air pressure (negative pressure) in the dust box 51 when the blower 25 is configured to be shifted to one side without being placed at the center of the device main body 50. ) Is higher on the side closer to the blower 25 (upper right side in FIG. 6 of the present embodiment). Therefore, the flow of wind through the second dust separation means 34 is not uniform and not only pressure loss occurs, but also the amount of fine dust adhering to the second dust separation means 34 is not uniform and the amount of adhesion The place where there are many will cause clogging early.

  Therefore, in the present embodiment, by providing a cutout portion 53 on the left side (opposite the blower 25) where air pressure is low, air can easily flow into a position where the air pressure is low, that is, a position where the flow rate of flowing air is small, The flow of wind passing through the second dust separation means 34 is made substantially uniform. As a result, the pressure loss is reduced, and the amount of fine dust adhering to the second dust separating means 34 is made substantially uniform, so that the second dust separating means 34 is not easily clogged.

  If the pressure loss due to the soaring air flow preventing means 52 becomes a problem, conversely, the notch 53 is provided at a position where the air pressure is high, that is, the flow rate of flowing air is large, and the pressure loss due to the soaring air current preventing means 52 is provided. It is good also as a structure which reduces. In this case, clogging of the second dust separation means 34 occurs at an early stage, and the suction force of the dust collecting device starts to decrease. However, the amount of fine dust adhering to the second dust separation means 34 is uneven. Since it becomes large and a portion that is not clogged remains for a long time, it is possible to make it difficult to cause a significant reduction in suction force. In addition, a configuration in which dust removing means (not shown) for removing fine dust adhering to the second dust separating means 34 mainly drops the portion where the amount of fine dust attached is large, or this fine dust It is possible to increase the interval between the pleated filters in the portion where the amount of adhering is large so that the pleat filter is easily dropped by gravity, thereby preventing clogging.

  In the present embodiment, a part of the airflow prevention means 52 is notched against the non-uniformity of the air pressure due to the deviation of the position of the blower 25. However, the first dust separation means 33, etc. A plurality of cutouts may be provided corresponding to the non-uniformity of the air pressure due to the shape, or the height of the cutouts may be made nonuniform. In the present embodiment, the notch 53 is rectangular, but the shape of the notch is not limited to a rectangle.

  Further, as shown in FIG. 7, by providing the slide groove 54, the soaring air flow preventing means 52 is configured to be slidable and removable. This facilitates the care of the first dust separation means 33 and the like after removing the soaring airflow prevention means 52, and also prevents fine dust from adhering to the second dust separation means 34. The airflow prevention means 52 provided with a notch 53 at a position where the air pressure is low, and when the pressure loss due to the airflow prevention means 52 is a concern, the airflow prevention means 52 is notched at a position where the air pressure is high. It is possible to make a selection according to the user's preference, such as by providing a portion 53 and attaching the airflow prevention means 52.

  As described above, the dust collecting device according to the present invention can reduce the size of the device and prevent the dust separating means from being clogged by fine dust in the fine dust chamber and improve the suction performance. It can be applied to applications such as air cleaners and air conditioners as well as air conditioners.

Sectional drawing which shows the structure of the dust collector in Embodiment 1 of this invention. Cross section of the dust box in the dust collector The exploded perspective view of the dust box in the dust collector Sectional drawing which shows the structural example of the aperture | diaphragm | squeeze part in the dust collector Sectional drawing which shows the other example of the dust box in the dust collector Plan sectional drawing of the dust collector in Embodiment 2 of this invention Perspective view of the dust box body in the dust collector Cross section of dust box in conventional dust collector Sectional view of the dust box of another conventional dust collector

Explanation of symbols

DESCRIPTION OF SYMBOLS 21 Apparatus main body 25 Blower 33 1st dust separation means 34 2nd dust separation means 36 Fine dust chamber 40, 52 Soaring airflow prevention means 53 Notch

Claims (10)

A device main body containing a suction blower, a first dust separation means arranged in a suction path to the blower to separate relatively large dust and air, and further downstream of the first dust separation means A second dust separation means for separating dust and air; and a fine dust chamber provided below the second dust separation means for storing finer dust separated by the second dust separation means, In the vicinity of the fine dust chamber, a dust collecting device provided with a soaring airflow preventing means that closes a part of a flow path between the first dust separating means and the second dust separating means. The apparatus main body has a dust collection chamber for collecting relatively large dust separated by the first dust separation means, and the first dust separation means is a filter disposed in the dust collection chamber. The dust collecting apparatus according to 1. The dust collecting device according to claim 1 or 2, wherein the airflow prevention means is provided up to a position higher than a lower end of the second dust separation means. The dust collecting device according to claim 1 or 2, wherein the flying airflow preventing means is provided up to a height equal to a lower end of the second dust separating means or a position lower than a lower end of the second dust separating means. The soaring air flow preventing means is provided at a position where there is no gap between the second dust separating means and the direction of the flow path between the first dust separating means and the second dust separating means. The dust collecting apparatus of any one of Claims 1-4. The dust collector according to any one of claims 1 to 5, wherein the airflow prevention means is provided up to the same height as the upper end of the first dust separation means or a position higher than the upper end of the first dust separation means. vessel. The dust collecting device according to any one of claims 1 to 5, wherein the airflow prevention means is provided up to a position lower than an upper end of the first dust separation means. The dust collecting device according to any one of claims 1 to 7, wherein the airflow prevention means has a notch. The dust collector according to claim 8, wherein the notch portion is provided in a portion where the air pressure in the vicinity of the airflow prevention means is lowered. The dust collector according to claim 8, wherein the notch is provided in a portion where the air pressure in the vicinity of the airflow prevention means is increased.

Images