JP4557783B2 - Vacuum cleaner - Google Patents

Description

  The present invention relates to a vacuum cleaner.

    General vacuum cleaners guide dust-containing air sucked from the suction port to the main body of the vacuum cleaner, collect the dust through the dust collection section inside the main body of the vacuum cleaner, and collect the dust that has been collected and clean the outside of the vacuum cleaner body. It is the structure which exhausts to. The dust collecting unit is configured to collect dust by filtering with a paper filter and collect dust or collect dust by centrifugation in a cyclone separation chamber.

  An example of the dust collecting part of the cyclone separation type vacuum cleaner is disclosed in Patent Document 1. Here, the dust collecting part of the cyclone separation type vacuum cleaner guides an air flow including dust from the hose to the electric blower side, separates the dust by centrifugal separation in the cyclone separation chamber, and is below It is the structure which captures and collects dust in a dust accommodating part. Then, the dust storage part and the lid of the cyclone separation chamber are shared, and the dust is discarded by opening it. In addition, a filter made of non-woven fabric is built in the lid, and the filter communicates with the cyclone separation chamber and the dust container independently, and by switching this, when the air flows from the cyclone separation chamber, In some cases, dust is compressed in the dust container by flowing it from the dust collection case to the electric blower.

JP 2003-79546 A

  It is important for a vacuum cleaner to be used in a general household that it sucks dust well, is small and easy to handle, and it is necessary to reduce the size of the dust collecting part and simplify the operation of discarding the captured dust. The dust collecting part that captures dust by one cyclone separation chamber captures both coarse dust and fine dust together. Therefore, when discarding the captured dust, the fine dust is easily scattered and the dust disposal operation is troublesome. . Moreover, if it is going to improve dust capture (dust collection) performance, a cyclone separation chamber will become long and will enlarge.

  The cyclone separation type dust separation device (dust collecting part) with the cyclone separation chamber arranged horizontally requires a special flow path to give a swirl flow to the cyclone separation chamber inlet, and is configured in a compact and easy to handle form. Is difficult. In addition, because the filter on the cyclone separation chamber side and the dust container side are used separately, the suction work rate, which is one of the indicators of the dust suction capacity, such as fast clogging or the large filter area cannot be taken Is difficult to increase.

  One object of the present invention is to propose a vacuum cleaner having a cyclone-separated dust collecting portion that is small and easy to handle.

  Another object of the present invention is to propose a vacuum cleaner having a cyclone-separated type dust collecting portion that has a low resistance, that is, has a high suction work rate and a high dust capturing (dust collecting) performance. .

  Still another object of the present invention is to propose an electric vacuum cleaner equipped with a cyclone separation type dust collecting part that can reliably hold captured fine dust so as not to be scattered.

  Still another object of the present invention is to propose a vacuum cleaner that suppresses a reduction in suction force and air volume of the vacuum cleaner even when dust is collected.

  Still another object of the present invention is to propose an electric vacuum cleaner having a cyclone separation type dust collecting portion in which the number of places where the user cares is reduced and the place where care is performed is easy to understand.

According to the present invention, the dust collecting unit includes an inflow portion for introducing dust-containing air, a separation chamber for separating the dust from the dust-containing air flowing in from the inflow portion, and a first dust for storing the dust separated in the separation chamber. A housing portion, a first communication port communicating the first dust housing portion and the separation chamber, a first exhaust port for exhausting airflow from the separation chamber, and a first exhaust port provided in the first dust housing portion. 2 an exhaust port, and a pleated filter through which the air flow flowing out from the first exhaust port and the air flow flowing out from the second exhaust port pass, and the air flow passing through the pleated filter is the sucked into the electric blower separately above the separation chamber and the first communication port, a second communication port communicating with said pleated filter is provided, the second communication port, the first exhaust port the provided flow path through another flow path the pleated filter Communicating, in cross section seen from above the dust collecting part, more of the second communication port than the first communication port, characterized in that close to the pleated filter.

In addition, the dust collecting unit includes an inflow portion for flowing dust-containing air, a separation chamber for separating dust from the dust-containing air flowing in from the inflow portion, and a first dust storage portion for storing the dust separated in the separation chamber A first communication port that communicates the first dust container and the separation chamber, a first exhaust port that exhausts an air flow from the separation chamber, and an air flow provided in the first dust container. And a second dust container for storing dust separately from the first dust container, and the separation chamber is separated from the first communication port and the separation chamber and the first dust container. A second communication port that communicates with the second dust container is provided, and a third exhaust port that exhausts an air flow is provided in the second dust container, and the air flow that flows out of the first exhaust port and the second The air flow flowing out from the exhaust port and the air flow flowing out from the third exhaust port are sucked into the electric blower and collected. In a cross section viewed from above part, towards the said second communication port than the first communication port, characterized in that there was close to the third exhaust port.
Further, the second communication port is arranged to be shifted upward with respect to the inflow portion .

Further, the lower portion of the second communication port and the position facing the inflow portion is an arc-shaped wall.

In the present invention, most of the dust flowing into the separation chamber is separated in the separation chamber, transferred to the dust storage portion, and compressed and reduced in volume, so that the dust collection portion can be reduced in size.
Furthermore, since there is a second communication port that communicates with the separation chamber, the amount of air that automatically flows to the second communication port increases when a large amount of dust accumulates in the dust container, and the amount of air that flows from the inflow portion to the separation chamber Is hard to decline. For this reason, even when dust is collected, it is possible to realize a vacuum cleaner that suppresses a reduction in suction force and air volume of the vacuum cleaner.
Further, if the distance between the second communication port and the third exhaust port is shortened, the amount of dust accumulated between the second communication port and the third exhaust port can be reduced, so that the second communication port and the third exhaust port can be reduced. Even in a state where dust is accumulated between the exhaust ports, it is possible to reduce an increase in pressure loss of the air flow exhausted from the third exhaust port through the second communication port. For this reason, even when dust is collected, it is possible to realize a vacuum cleaner that suppresses a reduction in suction force and air volume of the vacuum cleaner.
In addition, the air volume flowing into the separation chamber from the inflow section is unlikely to decrease, so the dust capture (dust collection) performance in the separation chamber can be maintained, and the suction force and air volume of the vacuum cleaner are reduced even when dust is collected. It is possible to realize a vacuum cleaner that suppresses this.

  The air flow that has flowed into the separation chamber is divided into an exhaust port that exhausts the air flow from the separation chamber, an air flow that passes through the dust container through the first communication port, and an air flow that is exhausted through the second communication port. Therefore, the ventilation resistance can be lowered, and a vacuum cleaner having a high suction work rate can be obtained.

  Further, when the amount of dust accumulated in the dust container is small, the amount of air passing through the dust container is large, so that most of the dust is transferred to the dust container. Further, when a large amount of dust accumulates in the dust container, the pressure difference between the first communication port and the second exhaust port provided in the dust container increases, and the dust accumulated in the dust container is more strongly compressed.

  Further, since the lower part of the second communication port is an arc-shaped wall, the air flow in the separation chamber is a swirling flow, so that dust accumulated between the second communication port and the third exhaust port is swirled. Compressed by

  Moreover, since the captured dust is compressed, the captured fine dust can be reliably held so as not to be scattered.

  In addition, when disposing of dust, it can be disposed of in a single operation, reducing the number of locations where the user cleans, and realizing a vacuum cleaner with a dust collecting section that makes it easy to identify where to clean. it can.

Embodiments of the present invention will be described below with reference to the accompanying drawings.

  FIG. 1 is an external perspective view of a vacuum cleaner showing an embodiment of the present invention. FIG. 2 is a perspective view showing a state in which the upper cover of the cleaner body is opened. FIG. 3 is a perspective view showing a state in which the upper cover of the cleaner body is opened and the dust collecting unit 103 is removed. FIG. 4 is a schematic diagram showing the flow of air in the cleaner body. FIG. 5 is an external perspective view of the dust collection unit 103. FIG. 6 is an external perspective view of the dust collection unit 103 as viewed from the downstream side. FIG. 7 is an external perspective view in which both the filter frame 140 and the filter frame 163 are opened together from the dust collection case 105. FIG. 8 is a longitudinal sectional view of the dust collecting portion 103 including the central axis of the inner cylinder 131. 9 is a cross-sectional view taken along line AA in FIG. FIG. 10 is a perspective view of the inner cylinder 131.

  As shown in FIGS. 1 and 2, the electric vacuum cleaner in this embodiment includes a cleaner body 1, a hose 2, a hand operation tube 3, an expansion joint tube 4, and a suction port 5. The tube 3 is connected with the hose 2 and the suction port 5 is connected to the local operation tube 3 via the expansion joint tube 4 for use.

  In addition, the hose 2 has the connection part 2a attached to the hose connection port part 116 of the cleaner body 1. The vacuum cleaner main body 1 has an electric blower 107 built-in, and sucks dust in the intake flow by sucking in from the suction port 5 by the suction force of the electric blower 107, and the sucked dust-containing air is connected to the expansion joint pipe 4 and the hand. The vacuum cleaner body 1 is sucked through the operation tube 3 and the hose 2, and dust is collected (collected) by the dust collection unit 103, and then the air is exhausted outside the machine.

As shown in FIGS. 2 to 4, the vacuum cleaner main body 1 has a dust collection portion 103 mounted in a vertically detachable manner in a recess of an upper case 150 disposed between the lower case 101 and the upper lid 102. In addition, a filter case 113 is provided between the lower case 101 and the upper case 150, and an auxiliary filter 112 and a filter cover 113 a for suppressing the auxiliary filter 112 are arranged in the filter case 113. The cleaner body 1 includes an electric blower 107 and a cord reel (not shown).
The lower case 101 includes a traveling wheel 208 and a guide wheel (not shown) for causing the cleaner body 1 to travel on the floor surface. Furthermore, a handle 207 is attached to the upper part of the upper case 150 so as to be able to rotate, and the cleaner body 1 can be carried. Here, when the dust collecting part 103 is mounted on the cleaner body 1, an elastic seal part 172 integrated with the filter frame 163 is provided so that the dust collecting part 103 and the filter case 113 can be airtight.

  Further, a dust remover 164 is disposed above the filter case 113. The dust removing spring 170 provided in the dust removing device 164 rotates and flips the second filter 161 to remove dust accumulated on the second filter 161.

  The upper lid 102 is attached to the upper rear portion of the upper case 150 so as to be rotatable. In a state where the upper lid 102 is closed, the inflow portion 115 and the hose connection port portion 116 of the separation chamber 104 abut on the airtight state via the elastic member, and the dust collection case 105 and the filter frame 140 are in an airtight state. The filter frame 140 and the filter frame 163 are in contact with each other in an airtight state, and the filter case 163 and the filter case 113 in which the auxiliary filter 112 is accommodated are in contact with each other in an airtight state. Further, the filter case 113 and the electric blower 107 are in contact with each other through an elastic vibration-proof rubber in an airtight state.

  Next, the arrangement inside the cleaner body 1 will be described. The hose connection port 116 is located at the center in the width direction of the cleaner body 1 as viewed from above, and is disposed on the front surface of the cleaner body 1. The central axis of the separation chamber 104 is shifted from the center in the width direction, and the inflow portion 115 and the hose connection port portion 116 that allow air to flow in a substantially tangential direction of the separation chamber 104 are arranged in a straight line. The first dust container 105 a is installed on the opposite side in the width direction from the central axis of the separation chamber 104. Similarly, the electric blower 107 is installed on the side opposite to the center axis of the separation chamber 104, and an auxiliary filter 112 and a filter case 113 for housing the auxiliary filter 112 are provided on the front surface thereof. A cord reel (not shown) is installed beside the electric blower 107 and installed in the same direction as the central axis of the separation chamber 104 in the width direction of the cleaner body 1.

  By arrange | positioning in this way, the length of the vacuum cleaner main body 1 can be shortened, and small size and lightweight can be achieved. Further, since it is not necessary to provide a bend at the entrance of the separation chamber 104, an effect of reducing loss can be obtained. Further, if the upper lid 102 is made of a transparent plastic material, even when the upper lid 102 covers the dust collecting case 105 when the upper lid 102 is closed, the accumulation state of dust can be visually confirmed.

  In addition, the separation chamber 104 is provided with an inflow portion 115 which is an air intake port below the center of the length in the central axis direction of the separation chamber 104, so that the hose connection port portion 116 communicated with the inflow portion 115. Also, the separation chamber 104 can be disposed below the center of the length in the central axis direction. For this reason, since the said hose connection port part 116 can be arrange | positioned in the lower part of the cleaner main body 1, when a user pulls the said cleaner main body 1 through the hose 2 with the hand operation tube 3, The vacuum cleaner main body 1 is hard to fall and can be stably routed.

Furthermore, since the hose connection port 116 can be disposed on the lower side of the cleaner body 1, the hose connection port 116 may be provided at the lower part of the upper case 150 and the lower case 101, and these cases may be placed upward. There is no need to extend it. For this reason, the bending moment applied to the lower case 101 for receiving the force applied to the hose connection port portion 116 can be reduced, so that it is not necessary to provide a special reinforcing portion in the lower case 101, which is useful for reduction in size and weight.
Here, the embodiment of the present invention will be described using a cyclone utilizing centrifugal separation. Here, the dust collection case 105 includes a separation chamber 104, a first dust storage unit 105a, and a second dust storage unit 105b, and the dust collection unit 103 includes the dust collection case 105 and a filter.

As shown in FIG. 4, the vacuum cleaner main body 1 flows dust-containing air from the inflow portion 115 into the separation chamber 104 through the hose 2, and swirls from the lower side to the upper side to separate the dust by a centrifugal separation action. Thus, the dust is transferred to the first dust container 105a through the first communication port 117 disposed in the upper part of the separation chamber 104. Here, the airflow that has flowed into the first dust container 105a passes through the second exhaust port 146 and is exhausted by filtering the dust with the filter B106b.
Here, a part of the air that has flowed into the separation chamber 104 and a part of the dust that has not been transferred to the first dust storage part 105 a are stored in the second dust through the second communication port 118 provided in the upper part of the separation chamber 104. It is conveyed to the part 105b. The airflow that has flowed into the second dust container 105b passes through the third exhaust port 147, and is exhausted by filtering the dust with the filter C106c.
Further, the fine and light dust that has not been transferred to the first dust container 105a and the second dust container 105b in the separation chamber 104 and a part of the air that has flowed into the separation chamber 104 are reversed at the upper part of the separation chamber 104. Then, the gas passes through the exhaust hole 133 provided on the outer peripheral side of the inner cylinder 131, passes through the communication port 120, the communication passage 145, and the first exhaust port 144 in this order, and is further exhausted by filtering the dust with the filter A 106a.
The air flow exhausted from the filter A 106a, the air flow exhausted from the filter B 106b, and the air flow exhausted from the filter C 106c separate finer dust by the second filter 161, and the auxiliary filter 112 Through the electric blower 107. Exhaust air from the electric blower 107 is cooled through a filter 108, partly through an exhaust passage (not shown), and partly through a cord reel (not shown). To be released.

  That is, an air flow having an airflow diverted from the filter A 106 a through the first exhaust port 144, an air flow B having an air flow B flowing out from the filter B 106 b through the second exhaust port 146, The airflow having the air volume C flowing out from the filter C106c through the exhaust port 147 is collected by the second filter 161 and then sucked into the electric blower 107 through the auxiliary filter 112.

In the embodiment of the present invention, most of the dust flowing into the inflow portion 115 is separated in the separation chamber 104 and transferred to the first dust storage portion 105a. Here, since there is an air flow from the first communication port 117 toward the second exhaust port 146, the dust conveyed to the first dust container 105a is urged to the filter B 106b to be compressed and reduced in volume. For this reason, since much dust can be accommodated even if the 1st dust accommodating part 105a is reduced in size, the dust collecting part 103 can be reduced in size.
Furthermore, since dust that has not been transferred from the separation chamber 104 to the first dust container 105a is stored in the second dust container 105b, it is possible to improve dust capturing (dust collection) performance. Further, as shown in FIG. 9, if the volume of the second dust container 105b is made smaller than the volume of the first dust container 105a, the amount of dust collected in the second dust container 105b is small. The flow path through which air flows in the order from 104 to the second communication port 118, the second dust container 105b, and the third exhaust port 147 is less likely to increase the airflow resistance, so that even if dust accumulates in the first dust container 105a. A decrease in the amount of airflow flowing into the inflow portion 115 can be reduced. As a result, even when dust is collected, it is possible to realize a vacuum cleaner that suppresses a reduction in suction force and air volume of the vacuum cleaner.
Further, since there is a second communication port 118 that communicates with the separation chamber 104, if a large amount of dust accumulates in the first dust container 105 a, the amount of air that automatically flows to the second communication port 118 increases and the air is separated from the inflow unit 115. The air volume of the air flowing into the chamber 104 is difficult to decrease. For this reason, even when dust is collected, it is possible to realize a vacuum cleaner that suppresses a reduction in suction force and air volume of the vacuum cleaner.
Further, if the distance between the second communication port and the third exhaust port is shortened, the amount of dust accumulated between the second communication port and the third exhaust port can be reduced, so that the second communication port and the third exhaust port can be reduced. Even in a state where dust is accumulated between the exhaust ports, it is possible to reduce an increase in pressure loss of the air flow exhausted from the third exhaust port through the second communication port. For this reason, even when dust is collected, it is possible to realize a vacuum cleaner that suppresses a reduction in suction force and air volume of the vacuum cleaner.

  In addition, the air flow that flows into the separation chamber 104 passes through the exhaust hole 133 of the inner cylinder 131 and is exhausted through the communication passage 145, the flow path exhausted through the first dust container 105a, and the second Since the flow path exhausted through the dust container 105b is arranged in parallel to divide the air flow, the airflow resistance can be made lower than when each flow path exists alone, and the high suction work rate You can get a vacuum cleaner. That is, the air volume of the air flow passing through the first exhaust port 144 through the exhaust hole 133 of the inner cylinder 131 is smaller than when the air does not pass through the second exhaust port 146 and the third exhaust port 147. The ventilation resistance of one exhaust port 144 can be reduced. Therefore, it has the feature that the suction power of the vacuum cleaner can be further increased.

Further, when the amount of dust accumulated in the first dust container 105a is small, the air flow of the air volume B that passes through the first dust container 105a and flows out from the filter B 106b through the second exhaust port 146, and the second dust container The total airflow of the air volume C flowing through the portion 105b and flowing out from the filter B106b through the third exhaust port 147 is larger than the airflow A flowing out from the filter A106a through the first exhaust port 144 through the exhaust hole 133 of the inner cylinder 131. Therefore, most of the dust is transferred to the first dust container 105a and the second dust container 105b. Since the volume of the first dust container 105a is larger than the volume of the second dust container 105b, most of the dust accumulates in the first dust container 105a.
In the present embodiment, since the air flow in the cleaner body 1 is divided into three paths as shown in FIG. 4, the direction of the air flow is the dust accumulated in the first dust container 105a. A pressure difference is generated, and dust is constantly compressed by this pressure difference. Furthermore, if a large amount of dust accumulates in the first dust container 105a, the pressure difference between the first communication port 117 and the first exhaust port 144 increases, and the dust collected in the first dust container 105a is more strongly compressed. .
This pressure difference increases as the amount of dust accumulated in the first dust storage portion 105a increases. Therefore, the pressure difference increases as the amount of dust in the first dust storage portion 105a increases. Accordingly, the dust accumulated in the first dust container 105a accumulates in layers before the filter B 106b, and fine dust accumulates together. For this reason, since dust is interspersed between fiber dusts, it is also possible to obtain an effect that it is difficult for dust to rise when throwing away garbage.
Further, since the dust that has been centrifuged in the separation chamber 104 and transferred to the first dust container 105a is unlikely to flow back to the separation chamber 104, the dust transferred to the first dust container 105a does not re-scatter and is collected. Dust performance can be increased. Here, as shown in FIG. 8 and FIG. 9, ribs 156 and ribs 157 are arranged in the first dust container 105a, and the vortex generated in the first dust container 105a is reduced into a small vortex. Is suppressed from occurring. For this reason, it can suppress that the dust which flowed into the 1st dust accommodating part 105a flows into the separation chamber 104 again by this big vortex. Since dust can be prevented from re-scattering into the separation chamber 104, dust collection performance can be improved.
Further, when the amount of dust accumulated in the first dust container 105a increases, the airflow resistance when passing through the first dust container 105a increases, so that the amount of air passing through the first dust container 105a decreases. Therefore, when the amount of dust that easily generates odor is increased in the first dust container 105a, the amount of air that passes through the dust is reduced, and it is difficult to remove the odor from the vacuum cleaner.

Here, the magnitude of the air volume A of the air flow flowing out from the first exhaust port 144, the sum of the air volume B of the air flow flowing out of the second exhaust port 146 and the air volume C of the air flow flowing out of the third exhaust port 147 are large and small. The relationship can be understood by performing a test by the following method according to the method for measuring the suction work rate described in JIS C 9108 (electric vacuum cleaner). When only the first exhaust port 144 is blocked, the air flow that flows in from the inflow portion 115 passes from the separation chamber 104 through the first communication port 117 and through the first dust accommodating portion 105a to the second exhaust port 146. The sum of the air volume B flowing out from the filter B 106 b through the separation chamber 104 and the air flow volume C flowing out from the filter C 106 c through the second exhaust port 147 after passing through the second communication port 118 through the second communication port 118. The suction power when flowing into the blower 107 is WB. Further, when the second exhaust port 146 and the third exhaust port are closed, that is, the air flow flowing in from the inflow part 115 passes through the exhaust hole 133 of the inner cylinder 131 from the separation chamber 104 and passes through the communication passage 145. Let WA be the suction power when only the airflow A flowing out of the filter A 106 a through the first exhaust port 144 flows into the electric blower 107.
When the value of the suction work rate WA is smaller than the value of the suction work rate WB, it can be said that the sum of the air volume B and the air volume C is larger than the air volume A. This means that a high suction power, which is the output of the vacuum cleaner, means that the pressure loss curve has a small gradient and the ventilation resistance is small, so that more airflow is likely to flow.

  In order to perform more simply, in the above measurement state, when the air volume control valve of the measuring device is set to the fully open position, the air volume in the former state at this time is QB, and the air volume in the latter state is QA. Is larger than the value of QA, it can be said that the sum of the air volume B and the air volume C is larger than the air volume A. This means that a large air flow value when the air flow control valve is fully open means that the pressure loss curve has a small gradient and the air flow resistance is small, so that a larger air flow easily flows. .

Here, in the embodiment of the present invention, since the first dust container 105a, the second dust container 105b, and the communication passage 145 are arranged in parallel to divide the air flow, each flow path exists independently. Ventilation resistance can be made lower than this, and the air volume Q when the air volume control valve of the measuring device is in the fully open position can be larger than QA or QB. That is, the flow speed in the expansion joint pipe 4 can be improved, and the flow speed in the suction opening 5 when the suction opening 5 is connected to the tip of the expansion joint pipe 4 can also be improved.
Since these flow speeds can be improved, more dust on the surface to be cleaned can be sucked. In other words, the time required for the user to clean is shortened and the user's labor is reduced. Further, since the air volume is increased and the flow velocity of the inflow portion 115 can be improved, the ability to separate dust in the separation chamber 104 is improved, and the dust collection performance is improved.

  Next, details of the dust collection case 105 will be described. The direction in which the dust centrifuged in the separation chamber 104 flows out of the separation chamber 104 through the first communication port 117 is a swiveling direction in the separation chamber 104 and a tangential direction of the separation chamber 104. For this reason, in the present embodiment, the front side of the vacuum cleaner main body 1 that is the farthest from the filter B 106b in which the first communication port 117 of the separation chamber 104 is in contact with the dust collecting case 105 (the hose connection port portion 116 side). Can be arranged. Here, the dust centrifuged in the separation chamber 104 accumulates from the vicinity of the filter B 106b in the first dust container 105a, and sequentially accumulates toward the first communication port 117 side. Therefore, the first dust container It is difficult for the dust to block the first communication port 117 until 105a is filled with dust. That is, the volume of the first dust container 105a can be used effectively.

The second dust container 105b is disposed between the separation chamber 104 and the second filter 161, and the second communication port is the second dust container 105b and is disposed at the position farthest from the second filter 161. ing. For this reason, in the present embodiment, the front surface of the vacuum cleaner main body 1 farthest from the filter C106c in contact with the dust collection case 105 in the second dust container 105b is connected to the second communication port 118 of the separation chamber 104. It can arrange | position to the side (hose connection port part 116 side). Here, the dust centrifuged in the separation chamber 104 accumulates from the vicinity of the filter C106c in the second dust container 105b, and sequentially accumulates toward the second communication port 118 side, so that the second dust container It is difficult for the dust to block the second communication port 118 until the dust is filled in 105b.
Further, since the second communication port 118 is disposed above the inflow portion 115 and the arc-shaped wall 119 is disposed at a position facing the inflow portion 115, the air flow flowing from the inflow portion 115 is separated. A swirling flow is generated in the chamber 104. When dust accumulates in the second dust container 105b, it accumulates from the lower side of the second dust container 105b, and the second communication port 118 is located above the second dust container 105b, so that the second dust container 105b It is difficult for the dust to block the second communication port 118 until the dust is filled. Furthermore, the second dust container 105b has a feature that it is difficult to spill dust until it is filled with dust.
Further, since a swirling flow is generated in the separation chamber 104, the dust in the second dust container 105b is pressed against the filter C106c side by this swirling flow, and has a feature that it is difficult to flow back to the separation chamber 104 side.
Here, the filter A 106a, the filter B 106b, and the filter C 106c are configured by a mesh-like net filter, a metal net, a metal plate having a minute hole, a plastic flat plate having a minute hole, or the like. The air containing dust flows into the first dust container 105a from the first communication port 117 of the separation chamber 104, and relatively large dust in the air is dammed up by the filter B106b, and accumulates from before the filter B106b. The fine dust that has passed through the filter B 106b is captured by the second filter 161 and collected.
Also, the dust flowing into the second dust container 105b from the second communication port 118 of the separation chamber 104 is dammed up by relatively large dust in the air by the filter C106c, and accumulates from before the filter C106c. Fine dust that has passed through the filter C106c is captured and collected by the second filter 161. Further, the filter A 106 a functions to prevent fine fiber dust or the like on the air flow flowing out from the first exhaust port 144 through the exhaust hole 133 of the inner cylinder 131 from blowing through. Finer dust that has passed through the filter A 106a is captured and collected by the second filter 161.
Here, the auxiliary filter 112 acts so that dust is not inhaled into the electric blower 107 when the cleaner body 1 is operated without the dust collecting unit 103 being accidentally attached.
As shown in FIGS. 5 and 8 to 10, the outer cylinder 135 of the separation chamber 104 is provided with an inflow portion 115, which is an air intake port, below the center of the length of the separation chamber 104 in the central axis direction. The separation chamber 104 having a substantially cylindrical shape is installed so that air enters in a substantially tangential direction. A first communication port 117 and a second communication port 118 are provided above the center of the separation chamber 104. An inner cylinder 131 is provided in the lower part of the separation chamber 104 and is connected to the lower communication port 120. Here, if the connection port 120 and the communication passage 145 are attached via an elastic seal member 153, and the outer cylinder 135 and the inner cylinder 131 are attached via an elastic seal member 151, it is easy to achieve airtightness. When the elastic seal member 151 and the elastic seal member 153 are integrally formed, and the inner cylinder cap 152 is attached to the inner cylinder 131 with screws or the like so as to sandwich the elastic seal member, the inner cylinder 131 and the inner cylinder cap The airtightness of 152 can be secured. The inner cylinder 131 includes a cylinder part 134, a partition wall 132 spirally wound around the cylinder part 134, a guide wall 137 that connects the central end part 115 a of the separation chamber 104 of the inlet pipe 115 and the cylinder part 134, and the partition wall It is comprised by the outer wall 139 arrange | positioned at the outer peripheral side of 132. FIG. Here, a partition wall 132 that is spirally wound around the inner cylinder 131 is provided so that the dust-containing air flow that flows in from the inflow portion 115 is easily swirled and raised. The junction between the partition wall 132 and the cylindrical portion 134 is rounded and joined, and the height of the cylindrical portion 134 is approximately equal to the height of the highest portion of the partition wall 132 or is the highest of the partition wall 132. It is only about 5 mm higher than the height of the high part. Further, the height of the guide wall 137 is substantially equal to the height of the highest portion of the partition wall 132.
Here, the shape of the guide wall 137 has a convex shape that bulges toward the outer cylinder side or a bend portion 137a so that the flow flowing into the separation chamber 104 from the inlet pipe 115 is directed toward the outer cylinder 135 side. It has the shape of “ku”. Further, each side of the cross-sectional shape of the guide wall 137 may be a straight line or an arc. In addition, the inflection part 137a is preferably rounded so that the sides are smoothly connected. In addition, it is more preferable that the gap between the inflection portion 137a of the guide wall 137 and the outer cylinder 135 is set to 20 mm or more because even if a long and narrow object such as a toothpick is sucked, it is difficult to be caught.

Here, the partition wall 132 of the inner cylinder 131 is lifted upward spirally so as to lift the air flow in the separation chamber 104 upward. For this reason, the dust flowing into the separation chamber 104 from the inflow portion 115 rises along the spiral partition wall 132 and is rotated and centrifuged in the separation chamber 104, and is collected through the first communication port 117. It is conveyed to the case 105. As described above, since the partition wall 132 is spirally lifted upward, dust is given a strong ascending action in the separation chamber 104 and operates with a low air flow of 1 cubic meter or less per minute such as a DC cordless vacuum cleaner. Even with a vacuum cleaner, dust can be conveyed to the dust collection case 105. Here, since the axial direction of the separation chamber 104 is not a horizontal direction, dust having a large specific gravity that has flowed into the separation chamber 104 at the time of the low air volume described above falls without being able to swirl during the swirling, and falls into the separation chamber 104. The collision can be prevented again, and the separation chamber 104 can be prevented from being damaged or broken. If the height of the guide wall 137 is made higher than the height of the inflow portion 115, the air flow flowing in from the inflow portion 115 and the air flow swirling in the separation chamber 104 are less likely to interfere and mix, and the accompanying turbulence. In addition, the cylindrical portion 134 is provided with an exhaust hole 133 for exhausting a part of the air in the separation chamber 104. The exhaust hole may be formed by forming a large number of holes having a diameter of about 2 mm in the cylindrical part 134 of the inner cylinder 131 when the inner cylinder 131 is molded, and a resin fiber net filter having a wide opening is formed in the cylindrical part 134. And may be provided by insert molding. The mesh size is the size of the mesh filter or wire mesh (the size of the gap between the threads), the metal plate, the plastic plate, or the size of the minute holes provided in the inner cylinder 131. Say it.
Here, the dust-containing air that has flowed into the separation chamber 104 is less likely to flow directly into the exhaust hole 133 provided in the inner cylinder 131 by the guide wall 137, so that dust can be prevented from blocking the exhaust hole 133. Therefore, the suction area can be maintained and the suction force can be maintained.
Further, the dust-containing air that has flowed into the separation chamber 104 can be drifted to the outer cylinder 135 side, which is the outer diameter side of the separation chamber 104, by the guide wall 137, so that the dust is subjected to a stronger centrifugal separation action, It is conveyed to the 1st accommodating part 105a through the 1st communicating port 117, and dust collection performance can be improved. Further, since the exhaust hole 133 is not easily blocked by dust, the airflow resistance of the air flow A flowing out from the first exhaust port 144 through the exhaust hole 133 provided in the inner cylinder 131 from the separation chamber 104 is increased. Since it is difficult, it is possible to prevent the suction air volume of the vacuum cleaner from decreasing and to maintain the suction power.

Further, even if the guide wall 137 is provided, the flow passage cross-sectional area of the inlet pipe 115 of the separation chamber 104 does not decrease, so the inflow speed into the separation chamber 104 does not increase, so that an increase in loss due to inflow can be prevented. The dust collection performance can be improved without reducing the suction power.
When the exhaust hole 133 is provided in the cylindrical part 134 by molding, the mold moves radially to create the cylindrical part 134 and the exhaust hole 133. Therefore, the cylindrical part 134 is spirally wound around the inner cylindrical part 134. When the partition wall 132 is also provided at the same time, the exhaust hole 133 has an opening that faces the flow direction of the swirling flow in the separation chamber 104. For this reason, it is more effective to provide this guide wall 137. Here, if the exhaust hole 133 is an opening that faces the flow direction of the swirling flow in the separation chamber 104, the air flow of the air volume A that flows out from the first exhaust port 144 flows through the exhaust hole 133. Since the resistance can be reduced, the suction power of the vacuum cleaner can be improved.

  Here, since the cylindrical portion 134 of the inner cylinder 131 is configured to be substantially equal to the height of the highest portion of the partition wall 132, hair or hair is added to the cylindrical portion 134 of the inner cylinder 131 that discharges air from the separation chamber 104. It can prevent the hair of pets such as dogs and cats and lint from being wrapped around. Further, even if dust such as hair tries to wrap around the cylindrical portion 134 of the inner cylinder 131, it cannot wrap around the cylindrical portion 134, and these dust is caused by the swirling air flow rising in the separation chamber 104. Then, it moves upward and is conveyed to the first dust container 105a and the second dust container 105b. For this reason, since reduction of the effective area of the exhaust hole 133 of the inner cylinder 131 can be prevented, the suction force of the cleaner is unlikely to decrease. Furthermore, since long dust such as hair does not stay in the separation chamber 104 but is transported to the first dust storage portion 105a and the second dust storage portion 105b, turbulence of the air flow in the separation chamber 104 can be suppressed. The suction power of the vacuum cleaner can be made difficult to decrease.

  Further, by preventing hair, pet hair such as dogs and cats, lint, etc. from wrapping around the cylinder part 134 of the inner cylinder 131, the dust collecting part 103 with improved maintenance performance can be realized. If the configuration of the inner cylinder 131 is as described above, when dust-containing air is caused to flow from the top to the bottom of the separation chamber 104, or when the separation chamber 104 is placed horizontally, the central axis of the swirling flow is substantially horizontal. The same effect can be selected even when placed in.

Here, when the dust in the dust collection case 105 is discarded, or when the separation chamber 104 or the second separation chamber 114 becomes dirty, the upper lid 102 is opened upward, and in this state, the handle 123 at the upper part of the dust collection case 105. Take it out. The user removes the dust collecting case 105 from the cleaner body 1 and then presses the button 142 to open both the filter frame 140 and the filter frame 163 from the dust collecting case 105, and The dust accumulated in the first dust container 105a and the second dust container 105b and the dust in the pocket 162 are discarded. It is desirable to dispose of the trash before dust overflows from the dust collection case 105. Most of the dust that has entered the cleaner body 1 is stored in the first dust container 105 a in the dust collection case 105. For this reason, the dust collection case 105 is provided with a waste disposal line 155 at a position near the first communication port 117 so that the user can discard the waste with reference to this. The garbage disposal line 155 is not oriented horizontally or vertically, but when the dust accumulates in the first dust container 105a, the part close to the first communication port 117 is filled with garbage at the end, The curve and the shape of the “ku” character are tilted according to the degree of accumulation.
Here, the 2nd exhaust port 146 serves as the 1st dust disposal port which discards the dust of the 1st dust accommodating part 105a. Further, the third exhaust port 147 also serves as the second dust disposal port for discarding the dust in the second dust container 105b. Further, the dust accumulated in the communication passage 145 is exhausted from the first exhaust port 144. The first exhaust port 144, the second exhaust port 146, the third exhaust port, and the opening of the pocket 162 are all provided on the filter frame 140 side. That is, when the dust is discarded, the dust accumulated in the communication path 145, the first dust container 105a, the second dust container 105b, and the pocket 162 can be discarded in one operation. In addition to reducing the number, it is possible to realize an electric vacuum cleaner having a cyclone separation type dust collecting part that is easy to understand where to clean.
Here, the filter A 106a, the filter B 106b, and the filter C 106c are formed by being partitioned into a filter frame 140 that is a common lid. In addition, when a mesh filter is used for the filter A 106a, the filter B 106b, and the filter C 106c, if the mesh number per inch is about 100 to 400, the mesh opening may be set to about 30 μm to 200 μm. it can. When using a wire mesh or a flat plate having minute holes, the mesh opening may be set to about 30 μm to 200 μm. The exhaust hole 133 provided in the tube part 134 uses a hole having a diameter of about 1 mm to 2 mm or a mesh filter having an opening of 1 mm to 2 mm. This is because, for example, when the vacuum cleaner main body 1 is moved when the operation is stopped, dust is spilled from the first dust container 105a. For example, relatively large dust such as pebbles or solid fibers is secondly discharged through the exhaust hole 133. In order to prevent entry into the separation chamber 114, the opening is set to such a size.
The filter A 106a, the filter B 106b, and the filter C 106c can be easily manufactured by insert molding the filter frame 140 using a common material, and the cost can be reduced.
Further, if the aperture of the filter A 106a and the ratio of the opening are made larger than those of the filter B 106b and the filter C 106c, the separation chamber can be used even if dust accumulates in the first dust container 105a or the second dust container 105b. The air flow from 104 through the exhaust hole 133 of the inner cylinder 131, through the communication passage 145 and out of the filter A 106a through the first exhaust port 144 increases the airflow resistance because the filter A 106a is not easily clogged by dust. It is difficult to reduce the decrease in the amount of airflow flowing into the inflow portion 115.
At this time, an elastic seal A140a that ensures airtightness between the dust collection case 105 and the filter frame 140, and an elastic body that contacts the wall A109a that divides the dust collection case 105 into a first dust storage portion 105a and a second dust storage portion 105b. The seal B140b, the elastic seal C140c contacting the wall B109b dividing the dust collection case 105 into the second dust storage part 105b and the communication path 145, and the first dust storage part 105a, the second dust storage part 105b, and the communication path 145 The filter A106a, the filter B106b, and the filter C106c are partitioned by the elastic seal D140d that abuts against the wall C109c that partitions the pocket provided at the lower portion, and the first dust container 105a, the second dust container 105b, and the communication passage 145 are separated. The garbage is not spilled from. Further, by dividing the flow path in this way, dust is prevented from flowing out from the first dust container 105a, the second dust container 105b and the communication passage 145 to other places and into the pocket 162. .

In addition, the area of the filter B106b through which the air from the first dust container 105a where dust is accumulated most is larger than the area of the filter A106a through which the air from the communication passage 145 passes. For this reason, the flow velocity of the air passing through the filter B106b communicating with the first dust container 105a that accumulates a large amount of dust can be reduced. For this reason, the blow-through of dust from the filter B 106b can be reduced. Furthermore, since the pressure loss at the time of air passing through filter B106b can be reduced, it has the characteristic that the suction work rate of a cleaner can be enlarged more.
Even if fine fiber dust flows into the exhaust hole 133 without being centrifuged in the separation chamber 104, the exhaust hole 133 is a hole having a diameter of about 1 mm to 2 mm. Since the exhaust hole 133 is not easily blocked by the dust passing through the separation chamber, it is difficult to increase the airflow resistance of the airflow flowing from the separation chamber 104 to the communication passage 145. Can last.
Further, the dust that has blown through the exhaust hole 133 can be captured by the filter A 106 a or the second filter 161. When the dust in the dust collecting case 105 is discarded, the user opens the filter frame 140 and discards the dust. Therefore, the dust adhered to the filter A 106a, the filter B 106b, the filter C 106c, and the dirt on the filter. Since it can be visually confirmed at the time of throwing away the waste, cleaning can be performed at an early stage when the dirt is severe.
Here, when fine fiber dust that could not be separated in the separation chamber 104 flows out from the communication port 120 to the communication passage 145, a swirl due to sudden expansion occurs, and this fine fiber dust is far from the communication port 120 of the filter A 106a. Since dust accumulates from above the filter A 106a which is the other side, it is difficult for dust to adhere to the portion close to the communication port 120 of the filter A 106a which is the main flow area. For this reason, since it is difficult to increase the ventilation resistance of the airflow flowing out from the communication port 120 through the separation chamber 104, the suction air volume of the vacuum cleaner can be prevented from decreasing and the suction force can be maintained.
In addition, when the fiber dust etc. which passed through the connection port 120 accumulate on the filter A 106a, these fiber dusts are pushed by the flow and are compressed and accumulated on the filter A 106a. At this time, when the fiber dust becomes a mass more than a certain mass, when the filter frame 140 is opened to discard the dust, an impact force acts on the fiber dust, and the fiber dust peels off from the filter A 106a. Can be discarded. As a result, the ventilation resistance of the filter A 106a is reduced, the suction air volume of the cleaner is recovered, and the suction force is recovered.
In addition, the cylindrical portion 134 integrated with the inner cylindrical cap 152 can be removed from the separation chamber 104 and cleaned using the cleaning brush 168. However, since the exhaust hole 133 of the cylindrical portion 134 is difficult to adhere dust, When the user discards dust, the user only has to clean the filter A 106a, the filter B 106b, and the filter C 106c that are usually integrated with the filter frame 140, thereby saving labor.

Further, the filter A 106a, the filter B 106b, and the filter C 106c are colored with a color different from the color of dust, for example, yellow, so that the user can remove dust on the filter A 106a, the filter B 106b, and the filter C 106c. Since it can be visually confirmed that the filter A106a, the filter B106b, and the filter C106c are clogged with fiber dust or dust, the filter A106a can be quickly found to be clogged, and cleaning can be performed at an early stage. it can.
Here, when the antistatic treatment is applied to the filter A 106a, the filter B 106b, and the filter C 106c, dust adhering to these filters can be easily separated and cleaning can be easily performed. Further, if the filter A 106a, the filter B 106b, and the filter C 106c are subjected to water repellent treatment, the cleaning property when these filters are washed with water is improved. Further, when an ITO film (Indium Tin Oxide, indium tin oxide thin film), which is a conductive film, is coated on the upstream side of the filter A 106a, the filter B 106b, and the filter C 106c by vapor deposition, welding, sputtering, etc. Dust adhering to the filters can be easily separated from these filters when dust is discarded.

  As shown in FIGS. 6 and 7, the filter frame 140 is provided so as to rotate about an opening / closing shaft 143 provided in the lower portion. When the filter frame 140 is closed, the dust collecting case 105 and the filter frame 140 are airtight. It keeps in contact with the state. A filter frame 163 is provided on the downstream side of the filter A 106a, the filter B 106b, and the filter C 106c. When the filter frame 140 and the filter frame 163 are closed, the two are in contact with each other while maintaining an airtight state. The filter frame 163 is provided so as to rotate about a concentric shaft with the filter frame 140 about the opening / closing shaft 143 provided at the lower part of the filter frame 140. Here, since the locking part 142a is biased by the spring so that the locking part 142a and the engaging part 163a are locked, the filter frame 140 and the filter frame 163 are airtight on the dust collecting case 105 side. It is locked to keep. Note that the shapes of the locking portion 142a and the engaging portion 163a are preferably a hook shape.

  Above the filter frame 163, a button 142 is provided in the vicinity of the handle 123. When the button 142 is pressed, the locking portion 142a is pushed, and the locking portion 142a and the engaging portion 163a provided on the filter frame 163 are provided. Are opened, and the filter frame 140 and the filter frame 163 are opened, so that waste can be discarded. Here, when the dust collecting case 105 is mounted on the cleaner body 1, the upper case 150 and the upper lid 102 are obstructed so that the button 142 cannot be pressed, so that the button 142 moves in the horizontal direction. Provided.

  A second filter 161 is formed integrally with the filter frame 163. In the second filter 161, the filter material is formed in a pleat shape, and the fold line direction of the mountain fold is substantially perpendicular to the floor surface. When the second filter 161 is made of a washable nonwoven fabric, a washable filter paper material, and a combination of these with a melt blow material or a PTFE (polytetrafluoroethylene) film, fine dust can be captured. When a PTFE (polytetrafluoroethylene) film is used, it is preferable to dispose a mesh filter on the upstream side of the PTFE film by heat welding or adhesion because the PTFE film is protected and dust separation is good. Furthermore, it is better to perform water-repellent treatment because the drying time at the time of washing with water can be shortened. Further, the second filter 161 is integrally formed with the second filter 161 at the top of the mountain on the downstream side. In addition, the reinforcement part 166 is not provided over all mountain parts, but is provided only in the vicinity of the part which the dust removal spring 170 of the dust removal apparatus 164 contacts. Thereby, since the vibration to the second filter 161 given by the dust removal spring 170 is easily transmitted to the entire second filter 161, the ability to remove dust from the second filter 161 can be increased. Moreover, since the plastic reinforcement part 166 is provided in the peak part of the 2nd downstream of the filter 161, the fall of the effective area of a filter can be suppressed and increase of ventilation resistance can be prevented. Here, since the reinforcing portion 166 receives impact force and frictional force by the dust removal spring 170, when POM (polyoxymethylene) is used, it has excellent frictional wear characteristics, so long-term sliding characteristics and fatigue resistance. Can be improved, and a reduction in dust removal performance can be prevented.

  The second filter 161 passes through the air that flows out of the first exhaust port 144, the air that flows out of the second exhaust port 146, and the air that flows out of the third exhaust port 147. It is not necessary to divide 161 into each flow path. If it does in this way, this 2nd filter 161 can perform dust removal in one dust removal part. Further, since the air that flows out of the first exhaust port 144, the air that flows out of the second exhaust port 146, and the air that flows out of the third exhaust port pass through the second filter 161, Rather than providing a filter divided for each flow path, the use of one second filter 161 can increase the flow path area and delay clogging of the filter. Further, depending on the amount of dust sucked into the dust collecting case 105, the air volume flowing out of the first exhaust port 144, the air volume flowing out of the second exhaust port 146, and the air volume flowing out of the third exhaust port 146 The ratio of changes. In the second filter 161, the filter material is formed in a pleat shape, and the fold line direction of the mountain fold is substantially perpendicular to the floor surface. Therefore, the first exhaust port 144, the second exhaust port 146, and the third exhaust The air that has flowed out through the mouth 147 can pass through the second filter 161 while passing between the peaks of the second filter 161. Furthermore, since these airflows merge and mix and pass through one second filter 161, the flow rate of air passing through the filter does not become excessive, increasing the airflow resistance and increasing the dust collection rate of the filter. Can be prevented.

A dust removing spring 170 is attached to the dust removing device 164, and the dust removing device 164 is rotated by pulling a power cord wound around a cord reel (not shown). Accordingly, the dust removing spring 170 is moved to the second filter. It sequentially collides with the reinforcing portion 166 of 161. Here, while the dust removal spring 170 is deformed in the rotational direction around the axis of the dust removal spring 170, it collides with the reinforcement portion 166 of the second filter 161, rides on this reinforcement portion 166, and this reinforcement portion 166 is Go over and repeat the collision with the reinforcing part 166 provided in the adjacent mountain. As a result, the dust removal spring 170 applies vibration to the second filter 161 and peels off dust attached to the second filter 161 by this vibration. Here, the shape of the filter frame 163 at the portion joined to the lower surface portion of the second filter 161 is a sawtooth shape that roughly matches the folds and valleys of the second filter 161. Further, at the lower part, the downstream side and the lower side of the filter frame 163 are closed and the upstream side is opened. In addition, the dust collection case 105 has a pocket 162 provided below the communication passage 145, the first dust container 105a, and the second dust container 105b by a wall 109c.
Here, the lower end portion of the second filter 161 is installed to be above the lower end portion of the filter frame 140. Accordingly, the dust that has peeled off from the filter surface of the second filter 161 passes between the peaks of the second filter 161 and is easily transferred to the pocket 162 side below the dust collection case 105. As a result, dust accumulates in the pocket 162.

  The dust removal operation may be performed after throwing away the dust. In this case, dust that has fallen on the inlet side of the pocket 162 is formed at the inlet portion of the pocket 162 by the airflow flowing through the second exhaust port 146 during the next cleaner operation. The secondary flow vortex is conveyed to the back of the pocket 162 and can prevent dust from rising. Since the density of the dust is larger than the air density, due to inertia, the dust cannot follow the sudden turning of the vortex due to the secondary flow of the air flow, and is blown to the back of the pocket 162. Accumulate.

Also, during actual cleaning, when the cleaner body 1 is moved before and after cleaning, an impact is applied to the cleaner body 1 and dust is peeled off from the second filter 161. Even when it falls, as explained above, it is conveyed to the pocket 162 at the time of the next cleaner operation. Accordingly, by providing the pocket 162 even when the dust removing device 164 is not attached, dust peeled off from the filter surface accumulates in the pocket 162, so that it is possible to suppress the dust from scattering again. The pocket 162 is below the communication passage 145, the first dust container 105a, and the second dust container 105b, but has a depth in a direction away from the second filter 161 side. The amount of dust can be increased without increasing the height dimension.
The cleaning of the second filter 161 can be performed by rubbing the surface of the second filter 161 using the cleaning brush 168 including the dust collecting case 105 with the filter frame 140 and the filter frame 163 opened. What is necessary is just to wash by water. If the height of the brush portion of the cleaning brush 168 is set higher than the height of the fold folds of the second filter 161, the brush portion reaches the fold fold valley portion of the second filter 161. So it is easy to scrape out the dust in the back.

  Here, when it is desired to further remove dust from the second filter 161, the handle 168 a of the cleaning brush 168 is applied to the reinforcing portion 166, and the cleaning brush 168 is moved in the left-right direction according to the guide 169, so that the second filter 161 should be repelled. Note that it is preferable that the cleaning brush 168 is provided with a hook 168b and attached to the dust collecting case 105 as shown in FIG. 5 because the user can easily take out the cleaning brush 168 during cleaning and is not easily lost.

  On the outer peripheral side of the filter frame 163, there is an elastic seal portion 172 that is integrated with the filter frame 163, and is in contact with the filter case 113 that houses the auxiliary filter 112 provided in front of the electric blower 107 while maintaining airtightness. Yes. When the dust collection case 105 is stored in the cleaner body 1, the elastic seal portion 172 is provided not on the vertical direction but on the upper side inclined to the electric blower 107 side. For this reason, pushing the dust collection case 105 into the cleaner body 1 makes it easy to remove the airtightness and facilitates the attachment / detachment of the dust collection case 105 from the cleaner body 1. Further, since the elastic seal portion 172 of the filter frame 163 is airtight with the filter frame 140, there is an effect that the number of seal members can be reduced.

  Here, since the inflow portion 115 of the separation chamber 104 is provided below, the first communication port 117 and the second communication port 118 can be provided in the upper part, and the first dust storage unit 105a and the second dust storage unit 105b. Since the dust that has entered inside falls down due to gravity, spillage into the separation chamber 104 can be prevented.

  Moreover, since the 1st communicating port 117 is arrange | positioned ahead of the dust collection case 105, and the 2nd communicating port 118 is also arrange | positioned ahead in the 2nd dust accommodating part 105b, the cleaner body 1 is stood and accommodated. Sometimes, the first communication port 117 is disposed above the first dust container 105a, and the second communication port 118 is disposed above the second dust container 105b. As a result, dust accumulated in the first dust container 105a can be prevented from spilling into the separation chamber 104, and dust collected in the second dust container 105b can be prevented from spilling into the separation chamber 104.

Further, since the first dust container 105a and the second dust container 105b are arranged on the side surface of the separation chamber 104, the length direction of the separation chamber 104 is increased without increasing the height of the cleaner body 1. Because it can, it has the feature that the separation ability of the waste by swirl flow can be increased.

It is an external appearance perspective view of the vacuum cleaner which shows one embodiment of this invention. It is a perspective view which shows the state which opened the upper cover of the vacuum cleaner main body in the electric vacuum cleaner shown in FIG. It is a perspective view which shows the state which opened the upper cover in the vacuum cleaner main body in the vacuum cleaner shown in FIG. 1, and removed the dust collection part 103. FIG. It is a schematic diagram which shows the flow of the air in a cleaner body. 3 is an external perspective view of a dust collection unit 103. FIG. It is the external appearance perspective view which looked at the dust collection part 103 from the downstream. It is the external appearance perspective view which opened both the filter frame 140 and the filter frame 163 from the dust collection case 105 together. 3 is a longitudinal sectional view of a dust collection unit 103 including a central axis of an inner cylinder 131. FIG. It is AA sectional drawing of FIG. 3 is a perspective view of an inner cylinder 131. FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Vacuum cleaner main body, 2 ... Hose, 2a ... Connection part, 3 ... Hand operation pipe, 4 ... Expansion joint pipe, 5 ... Suction port, 101 ... Lower case, 102 ... Upper lid, 103 ... Dust collection part, 104 ... Separation chamber DESCRIPTION OF SYMBOLS 105 ... Dust collection case, 105a ... 1st dust accommodating part, 105b ... 2nd dust accommodating part, 106a ... Filter A, 106b ... Filter B, 106c ... Filter C, 107 ... Electric blower, 108 ... Filter, 109a ... Wall A, 109b ... Wall B, 109c ... Wall C, 112 ... Auxiliary filter, 113 ... Filter case, 113a ... Filter cover, 115 ... Inflow portion, 115a ... End of separation portion side of inflow portion 115, 116 ... Hose connection port DESCRIPTION OF SYMBOLS 117 ... 1st communication port, 118 ... 2nd communication port, 119 ... Arc-shaped wall, 120 ... Communication port, 123 ... Handle, 131 ... Inner cylinder, 132 ... Bulkhead, 133 ... Exhaust , 134 ... cylinder part, 135 ... outer cylinder, 137 ... guide wall, 137a ... inflection part, 138 ... winding start position, 139 ... outer wall, 140 ... filter frame, 140a ... elastic body seal A, 140b ... elastic body seal B , 140c ... elastic body seal C, 140d ... elastic body seal D, 142 ... button, 142a ... locking portion, 143 ... opening / closing shaft, 144 ... first exhaust port, 145 ... communication passage, 146 ... second exhaust port, 147 3rd exhaust port, 150 ... Upper case, 151 ... Elastic seal member, 152 ... Inner cylinder cap, 152a ... Button, 153 ... Elastic seal member, 155 ... Waste disposal line, 156 ... Rib, 157 ... Rib, 161 ... Second Filter, 162 ... pocket, 163 ... second filter frame, 163a ... engaging part, 164 ... dust removing device, 166 ... reinforcing part, 168 ... cleaning brush, 168 ... brush handle, 168b ... hook, 169 ... guide, 170 ... dust spring, 172 ... elastic sealing unit, 207 ... handle, 208 ... traveling wheels,

Claims (10)

In a vacuum cleaner having a dust collector and an electric blower,
The dust collection part includes an inflow part for introducing dust-containing air, a separation chamber for separating dust from the dust-containing air flowing in from the inflow part, and a first dust storage part for storing the dust separated in the separation chamber; A first communication port for communicating the first dust container and the separation chamber, a first exhaust port for exhausting an air flow from the separation chamber, and a second exhaust port provided in the first dust container. And a pleated filter through which the air flow flowing out from the first exhaust port and the air flow flowing out from the second exhaust port pass,
The air flow that has passed through the pleated filter is sucked into the electric blower,
In addition to the first communication port, the separation chamber is provided with a second communication port that communicates with the pleated filter,
The second communication port communicates with the pleated filter via a flow channel different from the flow channel provided with the first exhaust port,
The vacuum cleaner characterized in that the second communication port is closer to the pleated filter than the first communication port in a cross section when the dust collecting part is viewed from above. In a vacuum cleaner having a dust collector and an electric blower,
The dust collection part includes an inflow part for introducing dust-containing air, a separation chamber for separating dust from the dust-containing air flowing in from the inflow part, and a first dust storage part for storing the dust separated in the separation chamber; A first communication port that communicates the first dust container and the separation chamber, a first exhaust port that exhausts an air flow from the separation chamber, and an air flow that is provided in the first dust container and exhausts the air flow. A second exhaust port,
In addition to the first dust container, a second dust container that houses dust is provided.
In addition to the first communication port, the separation chamber is provided with a second communication port that communicates the separation chamber and the second dust container.
The second dust container is provided with a third exhaust port for exhausting airflow,
The air flow flowing out from the first exhaust port, the air flow flowing out from the second exhaust port, and the air flow flowing out from the third exhaust port are sucked into the electric blower,
The vacuum cleaner characterized in that the second communication port is closer to the third exhaust port than the first communication port in a cross section of the dust collecting part as viewed from above. In claim 1 or claim 2,
The vacuum cleaner, wherein the second communication port is arranged to be shifted upward with respect to the inflow portion. In claim 3,
The vacuum cleaner, wherein a position below the second communication port and facing the inflow portion is an arc-shaped wall. In claim 3 or claim 4,
The vacuum cleaner, wherein the dust-containing air that has flowed into the separation chamber from the inflow portion swirls in the separation chamber from the lower side toward the upper side. In any one of Claims 3 thru | or 5,
The vacuum cleaner, wherein the first communication port is also arranged to be shifted upward with respect to the inflow portion. In any one of Claims 2 thru | or 6,
In the cross section which looked at the dust collection part from the top, the 1st communicating port is closer to the inflow part than the 2nd communicating port, The vacuum cleaner characterized by things. In claim 2 ,
The dust collecting section has a filter A provided at the first exhaust port, a filter B provided at the second exhaust port, and a filter C provided at the third exhaust port,
The vacuum cleaner, wherein the filter A, the filter B, and the filter C are partitioned. In claim 2 ,
The inflow portion is arranged so as to be linear with respect to the hose connection opening provided in the center of the width direction of the main body of the vacuum cleaner,
The first dust container, the second dust container, and the communication path from the separation chamber to the first exhaust port are arranged in parallel, and the second dust container is formed of the first dust container. And a connecting passage extending from the separation chamber to the first exhaust port. In claim 2 ,
The vacuum cleaner, wherein the volume of the second dust container is smaller than the volume of the first dust container.

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