JP2009072627A - Vacuum cleaner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an vacuum cleaner equipped with a small-sized and easy-to-handle cyclone separation type dust collection part. <P>SOLUTION: The vacuum cleaner is equipped, in a cleaner body 1, with a cyclone separation cylinder 104 and a dust collection case 105. The cyclone separation cylinder is composed of an inlet pipe 115 placed at the center part in the width direction of the cleaner body and made to communicate with a hose connecting port, an exhaust port installed in an inner cylinder 131, and a communication passage 120 for introducing the exhaust from the exhaust port. The dust collection case is provided with a filter 106 for separating dust from air containing the dust flowing in the dust collection case, wherein the air passing through the communication passage joins together with air passing through the filter and is sucked by an electric blower. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a vacuum cleaner.

  General vacuum cleaners guide the dust-containing air sucked from the suction port to the main body of the vacuum cleaner, remove the dust through the dust collecting part in the main body of the vacuum cleaner, and exhaust the air purified by the dust removal outside the main body of the vacuum cleaner. It is a configuration. The dust collecting unit is configured to capture and remove dust by filtration using a paper filter, or to capture and remove dust by centrifugal separation using a cyclone separation cylinder.

  A vacuum cleaner provided with a cyclone separation type dust collecting part is described in JP-A-2001-29288. The dust collecting part in this vacuum cleaner is configured to capture and remove dust by centrifugation using a single cyclone separating cylinder.

  In addition, as a cyclone separation type dust collecting unit in a vacuum cleaner, a dust separation device described in JP-T-10-511880 has a double structure of an outer separation tube and an inner separation tube. It is proposed that coarse dust is centrifuged to remove dust in the outer separation cylinder, and fine dust is centrifuged to remove dust in the inner separation cylinder.

JP 2001-29288 A JP-T-10-511880 JP 2002-209815 A Japanese Patent Application No. 55-73267 (Japanese Utility Model Application No. 56-176663)

  It is important that the vacuum cleaner used in a general household is small and easy to handle, and it is necessary to reduce the size of the dust collecting unit and simplify the operation of discarding the captured dust.

  The dust collection part that captures dust with one cyclone separation cylinder 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 the dust capture | acquisition (dust collection = dust removal) performance, a cyclone separation cylinder will become long and will enlarge.

  The cyclone separation type dust separation device (dust collecting part) having an inner / outer double separation cylinder structure is a configuration in which the outer separation cylinder and the inner separation cylinder are integrally combined. Have difficulty. In general household use, a large amount of coarse dust is trapped and the frequency of operation for discarding the coarse dust increases, but the dust collecting part of the inner and outer double separation cylinder structure captures the coarse dust. Only the outer separation cylinder cannot be taken out and only the coarse dust cannot be discarded.

  When dust flows into the cyclone separation cylinder, and the dust is centrifuged and flows into the dust collection case, the dust collides with and rubs against the surface inside the cyclone separation cylinder and the inner surface of the dust collection case. The surface inside the cylinder and the inner surface of the dust collection case are damaged.

  The objective of this invention is providing the vacuum cleaner provided with the dust collecting part of a cyclone separation type small and easy to handle.

The present invention includes a vacuum cleaner body having a lower case and an upper case, and an electric blower incorporated therein, a hose connection port provided in the vacuum cleaner body to which a hose is connected, and a detachable attachment to the vacuum cleaner body. In a vacuum cleaner provided with a cyclone separator provided with an inner cylinder, and a dust collecting case that is detachably provided in the vacuum cleaner body and accommodates dust separated by the cyclone separator,
The cyclone separator is located in a central portion in the width direction of the cleaner body in a state where the cyclone separator and the dust collecting case are attached to the cleaner body, and an inlet pipe communicating with the hose connection port part, An exhaust port provided in the inner cylinder, and a communication passage through which exhaust from the exhaust port flows,
The dust collection case includes a filter that separates dust from the dust-containing air that has flowed into the dust collection case, and the air that has passed through the communication passage merges with the air that has passed through the filter and is sucked into the electric blower And
The inner cylinder is formed with an opening communicating with the exhaust port except for a part near the inlet pipe.

  ADVANTAGE OF THE INVENTION According to this invention, the vacuum cleaner provided with the cyclone separation-type dust collection part which is small and easy to handle can be provided.

It is an external appearance perspective view of the vacuum cleaner which shows one embodiment of this invention. It is a perspective view 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 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 vacuum cleaner main body cover in the vacuum cleaner shown in FIG. 1, and removed the dust collection case. 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 case and the cyclone separation cylinder. It is a top view which shows the state which removed the upper case and upper cover in the cleaner body. It is a schematic diagram which shows the flow of air. 2 is an external perspective view of a cyclone separation cylinder 104. FIG. 2 is an external perspective view of a dust collection case 105. FIG. It is sectional drawing which shows the AA cross section of FIG. It is sectional drawing containing the part of the inlet pipe 115 of the cyclone separation cylinder 104. FIG. It is sectional drawing containing the communication port 117 of the cyclone separation cylinder 104 and the dust collection case 105. FIG. It is a side view when the dust collection case 105 is seen from the exhaust side. It is an external appearance perspective view when the cyclone separation cylinder 104 and the dust collection case 105 are united. It is sectional drawing containing the inlet pipe 115 part and the valve 137 of the cyclone separation cylinder 104. FIG. It is sectional drawing containing the part of the inlet pipe 115 of the cyclone separation cylinder 104, and the hose coupling 200. FIG.

The best mode for carrying out the present invention is a vacuum cleaner body having a lower case and an upper case, and an electric blower built therein, a hose connection port portion provided in the vacuum cleaner body and connected to a hose, Electricity provided with a cyclone separator that is detachably provided on the vacuum cleaner body and has an inner cylinder, and a dust collecting case that is detachably provided on the vacuum cleaner body and accommodates the dust separated by the cyclone separator. In the vacuum cleaner,
The cyclone separator is
An outer cylinder having a substantially cylindrical shape, the cyclone separator and the dust collecting case mounted in the vacuum cleaner main body are positioned at the center in the width direction of the vacuum cleaner main body and communicated with the hose connection opening. An inlet pipe provided in the outer cylinder so that air flows in a substantially tangential direction of the separator, an exhaust port provided in the inner cylinder, and a communication passage through which exhaust from the exhaust port flows,
The dust collection case includes a filter that separates dust from air containing dust flowing into the dust collection case,
The air that has passed through the communication passage merges with the air that has passed through the filter and is sucked into the electric blower,
The inner cylinder is formed with an opening communicating with the exhaust port except for a part near the inlet pipe,
An upper lid that can be opened and closed is provided on the vacuum cleaner body, and the dust collection case and the cyclone separator are lifted from the vacuum cleaner body and removed by opening the upper lid.

  Embodiments of the present invention will be described with reference to the 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 of the cleaner body. FIG. 3 is a perspective view showing a state in which the upper cover of the cleaner body is opened. FIG. 4 is a perspective view showing a state where the dust collecting case of the cleaner body is removed. FIG. 5 is a perspective view showing a state where the dust collecting case and the cyclone separator of the cleaner body are removed. FIG. 6 is a horizontal plan view with the upper lid and the upper case removed. FIG. 7 is a schematic diagram showing the flow of air in the cleaner body.

  As shown in FIG. 1, the electric vacuum cleaner in this embodiment includes a vacuum cleaner body 1, a hose 2, a hand operation tube 3, an expansion joint tube 4, and a suction port 5, and the vacuum cleaner body 1 and the hand operation tube 3 are connected to each other. A hose 2 is used for connection, and a suction port 5 is connected to the local operation pipe 3 via an expansion joint pipe 4 for use.

  The vacuum cleaner body 1 incorporates an electric blower (described later), and sucks in dust from the intake flow by suctioning from the suction port 5 by the suction force of the electric blower. Then, the vacuum cleaner main body 1 is sucked through the hand control tube 3 and the hose 2, and dust is collected (collected) by a cyclone separation type dust collection unit (described later), and then exhausted outside the machine.

  As shown in FIGS. 2 to 6, the vacuum cleaner main body 1 has a cyclone separating cylinder 104 and a dust collecting case 105 detachably mounted between the lower case 101 and the upper lid 102, and between the lower case 101 and the upper case 150. The second auxiliary filter 112, the electric blower 107, and the cord reel 110 are incorporated.

  As shown in FIG. 7, the vacuum cleaner main body 1 separates dust by centrifugal action by flowing dust-containing air from the inlet pipe 115 through the hose 2 into the cyclone separating cylinder 104 and turning it. The dust is conveyed to the dust collecting case 105 through the communication port 117, and the exhaust from the cyclone separation cylinder 104 passes through the inner cylinder 131 and is exhausted to the communication passage 120 provided at the lower part of the cyclone separation cylinder 104. Part of the air flows into the dust collection case 105 and is captured by the first auxiliary filter 106. The exhaust from the dust collection case 105 is sucked into the electric blower 107 through the second auxiliary filter 112 from the communication port 146 behind the first auxiliary filter 106. At this time, the exhaust from the cyclone separating cylinder 104 is also sucked into the electric blower 107. Exhaust air from the electric blower 107 passes through the filter 108, partly through an exhaust passage (not shown), partly flows through the cord reel 110, cools them, and then releases them outside the apparatus.

  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, and the cyclone separating cylinder 104 and the dust collecting case 105 are detachably arranged side by side. In addition, the second auxiliary filter 108 is installed side by side.

  The upper lid 102 is attached to the upper rear portion of the upper case 150 so as to be able to rotate. When the upper lid 102 is closed, the inlet pipe 115 of the cyclone separation cylinder 104 and the hose connection port 116 abut against each other in an airtight state. And the upper opening 118 of the dust collecting case 105 are in contact with each other in an airtight state, and the communication passage 120 at the bottom of the cyclone separation cylinder 104 and the communication passage 145 provided at the lower portion of the dust collection case 105 are airtight. Abutting on the state, the communication port 146 and the filter case 113 in which the second auxiliary filter is accommodated are urged so as to abut on the airtight state. The axial direction of the cyclone separating cylinder 104 is oriented in the vertical direction in the floor moving cleaning state, but may be inclined in an oblique direction instead of the vertical direction.

  When the upper lid 102 is opened upward, the cyclone separating cylinder 104 and the dust collecting case 105 are slightly lifted from the lower case 101. In this state, the dust collecting case 105 can be separated and taken out by holding the handle 123 at the top of the dust collecting case 105, and the dust collecting case 105 is opened by opening the first auxiliary filter 106 in the dust collecting case 105. Discard the dust inside.

  Furthermore, when the inside of the cyclone separation cylinder 104 is dirty, the upper handle 125 can be held and lifted from the lower case 101, and the cyclone separation cylinder 104 can be disassembled and cleaned.

  Here, the inner surface of the cyclone separating cylinder 104 or the inner surface of the dust collecting case 105 is subjected to a clear UV curable coating treatment. For this reason, when dust flows into the cyclone separation cylinder 104, the dust is centrifuged and flows into the dust collection case 105, the dust collides with the surface inside the cyclone separation cylinder 104 or the inner surface of the dust collection case. Even when it is rubbed, it is difficult for scratches to be made on the surface, making it difficult for dirt to adhere, and improving abrasion resistance and contamination resistance. For this reason, even when the outer cylinder 135 and the dust collection case 105 of the cyclone separation cylinder 104 are made of a transparent plastic material, it is possible to visually confirm the accumulation of dust.

  Further, the cyclone separating cylinder 104 and the dust collecting case 105 are molded using an antistatic resin agent, or dust is attached to the cyclone separating cylinder 104 and the dust collecting case 105 by applying an antistatic agent to the surface. The number of cleanings can be reduced.

  Next, with reference to FIG. 6, arrangement | positioning inside the vacuum cleaner main body 1 is demonstrated. FIG. 6 is a plan view of the state where the upper case 150 and the upper lid 102 are removed. The hose connection port 116 is located at the center in the width direction of the main body 1 when viewed from above, the center axis of the cyclone separation cylinder 104 is shifted from the center in the width direction, and air flows in the substantially tangential direction of the cyclone separation cylinder 104. The inlet pipe 115 and the hose connection port 116 are arranged in a straight line. The dust collection case 105 is installed on the opposite side of the width direction from the center axis of the cyclone separation cylinder 104. Similarly, the electric blower 107 is installed on the opposite side of the center axis of the cyclone separating cylinder 104 in the width direction, and a second auxiliary filter 112 is provided on the front surface thereof. The cord reel 110 is installed beside the electric blower 107, and the central axis of the cyclone separating cylinder 104 is installed in the same direction in the width direction.

  By arranging in this way, the length of the main body can be shortened, and a small size and light weight can be achieved. Further, since there is no need to provide a bend at the inlet portion of the cyclone separation cylinder 104, an effect of reducing loss can be obtained.

  Here, details of the cyclone separating cylinder 104 and the dust collecting case 105 will be described with reference to FIGS. 8 to 13 and FIGS. 15 and 16. 8 is an external perspective view of the cyclone separating cylinder 104, FIG. 9 is an external perspective view of the dust collecting case 105, FIG. 10 is a cross-sectional view taken along the line AA of FIG. FIG. 12 is a sectional view including the cyclone separating cylinder 104 and the communication port 117 of the dust collecting case 105, and FIG. 13 is a side view of the dust collecting case 105 viewed from the exhaust side. FIG. 15 is a sectional view including the inlet pipe 115 portion of the cyclone separating cylinder 104 and the valve 137. FIG. 16 is a cross-sectional view including the inlet pipe 115 portion of the cyclone separating cylinder 104 and the hose joint 200.

  The outer cylinder 135 of the cyclone separation cylinder 104 is provided with an inlet pipe 115 as an air intake port below the center of the cyclone separation cylinder 104 in the central axial direction, and the cyclone separation cylinder 104 having a substantially cylindrical shape. It is installed so that air can enter in the direction of tangential line. A communication port 117 is provided above the center of the cyclone separation cylinder 104 to allow air to flow into the dust collecting case 105 together with dust. An inner cylinder 131 is provided at the lower part of the cyclone separation cylinder 104 and is connected to the lower communication passage 120. The inner cylinder 131 is constituted by a partition wall 132 and a cylinder part 134, and a resin fiber net is formed in the cylinder part 134 as a net filter 133 by insert molding integrally with the cylinder part 134. As shown in FIG. 10, the mesh filter 133 may be configured as a cylindrical portion on the side surface, or may be configured by combining the upper flat surface of the cylindrical portion and the cylindrical portion on the side surface. Here, the mesh filter 133 is not provided on the entire circumference of the cylindrical portion on the side surface of the inner cylinder 131, and the mesh filter 113 and the opening are not provided at about 90 degrees near the inlet pipe 115. For this reason, even if fine dust such as hair flows from the inlet pipe 115, it can be prevented from directly hitting the net filter 133, and can be prevented from getting stuck and entangled. Further, even when sharp dust such as a needle flows from the inlet pipe 115, it does not directly hit the mesh filter 133, so that the mesh filter 133 is broken and dust can be prevented from flowing out.

  Further, since the mesh filter 133 receives a force inward of the inner cylinder 131, an inner cylinder rib 136 may be provided on the inner diameter side of the mesh filter.

  Here, when the antistatic treatment is applied to the mesh filter 133, dust adhering to the mesh filter 133 is easily separated and cleaning is easy.

  Here, as shown in FIG. 16, a flow path in the hose joint 200 that communicates with the inlet pipe 115 that flows dust-containing air into the cyclone separation cylinder 104 is separated from the central axis 202 of the hose 2 that communicates with the hose joint 200. The hose joint rib 201 moves toward one side, and the flow passage area is reduced to communicate with the inlet pipe 115.

  In addition, since the hose joint rib 201 narrows the flow path through the taper portion on the upstream side thereof, it is not affected by the separation of the flow, so that an increase in loss can be suppressed and the flow is less turbulent. Enters the cyclone separation cylinder 104, and thus the centrifugal action of the cyclone separation cylinder 104 can be more effectively promoted.

  For this reason, since the flow velocity of air from the hose 2 can be increased without increasing the loss due to sudden reduction at the inlet pipe 115, the flow velocity in the cyclone separation cylinder 104 can be improved, and the cyclone separation cylinder 104 can be improved. The action of centrifuging the dust becomes stronger by turning at, and the dust collection efficiency can be improved.

  Moreover, since the flow velocity of the inlet pipe 115 can be improved without lengthening the inlet pipe 115, the vacuum cleaner body 1 can be reduced in size.

  In addition, the flow path in the hose joint 200 that communicates with the inlet pipe 115 that flows dust-containing air into the cyclone separation cylinder 104 is brought to one side by the hose joint rib 201 from the central axis 202 of the hose 2 that communicates with the hose joint 200. Regarding the direction, it is desirable to arrange the hose joint rib 201 so that the inlet pipe 115 can be arranged on the outer diameter side of the outer cylinder 135 because the flow velocity in the cyclone separation cylinder 104 can be further improved. Here, the hose joint rib 201 is provided in a substantially vertical direction.

  In addition, if the space part 203 is provided in the said hose coupling 200 and the inlet pipe 115 side edge part of the cyclone separation cylinder 104 is made into an opening, shaping | molding can also be performed easily. Furthermore, if the space 203 of the hose joint 200 and the joint on the inlet pipe 115 side are communicated so as to be airtight, the intrusion of dust into the space 203 can be prevented.

  Further, an inlet pipe 115 as an air intake port is provided in the outer cylinder 135 of the cyclone separation cylinder 104 below the center of the cyclone separation cylinder 104 in the central axial direction. The hose connection port 116 that communicates with the cyclone separating cylinder 104 can also 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 body 1, when the said cleaner body 1 is drawn around by the hand operation tube 3 via the said hose 2, the said cleaner The main body 1 is not easily toppled and can be stably routed.

  Furthermore, since the hose connection port 116 can be disposed on the lower side of the cleaner body 1, it is not necessary to dispose the hose connection port 116 on the upper lid 102, and the dust collecting case 105 and the cyclone separating cylinder 104 are disposed on the upper cover 102. When taking out from the cleaner body 1, the upper lid 102 can be easily opened and closed even with the hose 2 attached.

  The cyclone separating cylinder 104 is separated into an outer cylinder 135, an inner cylinder 131, and members forming the communication passage 120, and each is detachably fitted, and the respective members are in contact with each other while keeping airtightness. It should be noted that an elastic seal member may be interposed between the contact portions in order to realize an airtight contact. The cyclone separation cylinder 104 can be cleaned by separately separating the members that form the outer cylinder 135, the inner cylinder 131, and the communication passage 120, respectively.

  The dust collection case 105 is provided with an upper opening 118 at a position facing the communication port 117 of the cyclone separation cylinder 104, and both are in contact with each other while maintaining an airtight state. On the exhaust side of the dust collection case 105, a first auxiliary filter 106 attached to the filter frame 140 is provided. Both sides of the filter frame 140 are open, and are provided so as to rotate about a shaft portion provided at the bottom. When the filter frame 140 is closed, the main case 141 of the dust collecting case 105 and the filter frame 140 are provided. Are in contact with each other while maintaining an airtight state.

  When throwing away the trash, hold the handle 123 above the dust collection case 105, lift the dust collection case 105, pull the lever 142 that is integrated with the clamp part holding the filter frame 140 forward, and remove the filter frame 140. Open and do. The cleaning of the first auxiliary filter 106 can be performed by removing the first auxiliary filter 106 from the filter frame 140 and washing it.

  As the auxiliary filter 106, it is desirable to use a sponge made of foamable and washable plastic, a washable non-woven fabric, or a washable filter paper material.

  When antistatic treatment is applied to the first auxiliary filter 106 and the second auxiliary filter 112, the dust adhering to the first auxiliary filter 106 and the second auxiliary filter 112 is easily separated and can be easily cleaned. Become.

  A communication passage 145 and a communication port 146 are integrally provided at the lower part of the dust collection case 105. Accordingly, the dust collecting case 105 is divided into the main case 141, the communication passage 145, and the communication port 146 in the lower part of the filter frame 140, but the part where both are joined comes into contact with each other while maintaining airtightness. Yes. Further, the communication path 120 of the cyclone separating cylinder 104 is also in contact with the airtight state.

  The filter frame 140 is also in contact with a filter case 113 that houses the second auxiliary filter 112 provided in front of the electric blower 107 while maintaining airtightness.

  In order to realize the airtight contact described above, an elastic seal member may be interposed between the contact portions.

  When the electric blower 107 is operated, the cleaner main body 1 configured as described above causes dust-containing air to flow into the cyclone separation cylinder 104 from the inlet pipe 115 of the cyclone separation cylinder 104 by the suction force of the electric blower 107. By rotating in 104, the dust is centrifuged and lifted upward in the cyclone separating cylinder 104 and conveyed to the dust collecting case 105 side. The dust-removed air flows out from the inner cylinder 131 of the cyclone separation cylinder 104 to the communication passage 120 through the net filter 133. The mesh filter 133 functions to prevent blowout of fiber dust or paper dust.

  Air from the communication passage 120 flows to the second auxiliary filter 112 via the communication passage 145 and the communication port 146.

  Air containing dust from the communication port 117 of the cyclone separation cylinder 104 flows into the dust collecting case 105 through an upper opening 118 provided at the upper part of the dust collecting case 105, and dust in the air is collected by the first auxiliary filter 106. It is stopped and deposited before the first auxiliary filter 106. The air that has passed through the auxiliary filter flows toward the second auxiliary filter.

  The dust removal performance of the first auxiliary filter 106 is determined by the ability of the filter material, but it is preferable to have the ability to separate up to μm order dust. However, if the dust removal capability is too high, clogging is likely to be accelerated, so it is desirable to determine the balance with the overall dust removal capability.

  Most of the dust that has entered the vacuum cleaner body 1 is stored in the dust collection case 105. Therefore, the dust collection case 105 may be taken out of the vacuum cleaner body 1 and removed. It is desirable to dispose of the trash before dust overflows from the dust collection case 105. For this reason, as shown in FIG. 9, the dust collection case 105 is provided with a waste disposal line 155 at a position facing the upper opening 118 so that the user can discard the waste with reference to this. The garbage disposal line does not face horizontally or vertically, but when the dust accumulates in the dust collection case 105, the part close to the upper opening 118 is filled with the garbage at the end. It is set.

  In this embodiment, since the air flow in the cleaner body 1 is divided into two paths as shown in FIG. 7, a pressure difference is applied to the dust in the dust collecting case 105 in the air flow direction. This pressure difference causes the dust to be constantly compressed. Since this pressure difference increases as the amount of accumulated dust increases, it also has a feature that the amount of compression increases as the amount of dust increases. Therefore, more dust can be stored in the dust collection case 105, and therefore the cycle of waste disposal can be lengthened.

  The dust in the dust collection case 105 accumulates in layers before the first auxiliary filter 106, and fine dust also 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.

  Furthermore, since the flow rate on the exhaust side of the cyclone separator 104 is smaller than when the air does not pass through the dust collecting case 105, the resistance of the cyclone separator 104 can be reduced. Therefore, it has the feature that the suction power of the vacuum cleaner can be further increased.

  Further, in the cyclone separation cylinder 104, dust-containing air flows into the cyclone separation cylinder 104 from the inlet pipe 115 of the cyclone separation cylinder 104 and swirls in the cyclone separation cylinder 104, whereby the dust is centrifuged and the dust is separated. It is lifted upward in the cyclone separating cylinder 104 and conveyed to the dust collecting case 105 side. At this time, since there is a flow of air exhausted from the first auxiliary filter 106 from the cyclone separation cylinder 104 through the dust collection case 105, the dust centrifuged in the cyclone separation cylinder 104 is collected in the dust collection case. It becomes easy to flow in to the 105 side, and dust is instantly separated to the dust collecting case 105 side, so that the dust collection efficiency can be increased.

  Further, since the dust that has been centrifuged in the cyclone separation cylinder 104 and conveyed to the dust collection case 105 side is unlikely to flow back to the cyclone separation cylinder 104, the dust conveyed to the dust collection case 105 side is scattered again. The dust collection efficiency can be increased without doing so.

  Furthermore, when dust adheres to the net filter 133 of the inner cylinder 131, the amount of air flow exhausted from the communication port 146, which is the second exhaust port for exhausting the air removed from the cyclone separation cylinder 104, is reduced. The air volume of the first exhaust port 144 that is the exhaust port from the dust collecting case 105 that has passed through the first auxiliary filter 106 increases. For this reason, the dust adhering to the mesh filter 133 of the inner cylinder 131 is transported to the dust collecting case 105.

  Further, the air collected from the cyclone separation cylinder 104 is exhausted from the cross-sectional area of the first exhaust port 144 that is an exhaust port from the dust collection case 105 that has passed through the first auxiliary filter 106 from the dust collection case 105. It is larger than the cross-sectional area of the communication port 146 that is the second exhaust port. For this reason, the cross-sectional area of the first auxiliary filter 106 can be increased, and the flow velocity of the air passing through the first auxiliary filter 106 can be reduced. For this reason, the blow-through of dust from the first auxiliary filter 106 can be reduced. Further, since the pressure loss when air passes through the first auxiliary filter 106 can be reduced, the suction power of the vacuum cleaner can be further increased.

  Here, the downstream end 119 of the communication port 117 of the cyclone separation cylinder 104 is formed into an R shape, or a member having a good sliding property (low friction coefficient) is attached, so that the dust at the downstream end 119 is removed. A catch can be prevented. In addition, when the upper side of the downstream end 119 is tilted toward the first exhaust port 144, which is an exhaust port from the dust collecting case 105 (when the opening of the communication port 117 is wider on the upper side), Even if dust catches on the downstream end 119 of the communication port 117, the dust moves upward above the downstream end 119, and air flows from the cyclone separation cylinder 104 to the dust collecting case 105 during this movement. Thus, it can be easily peeled off from the downstream end 119 of the communication port 117.

  Further, when the amount of dust accumulated in the dust collection case 105 increases, the resistance when passing through the dust collection case 105 increases, so the flow rate flowing in the dust collection case decreases. Therefore, when there is a large amount of dust that is likely to generate odor, the amount of air passing through that portion is reduced, and there is also an effect that it is difficult to remove the odor outside the vacuum cleaner.

  Further, when the inside of the communication passage 145 and the communication port 146 becomes dirty, it can be easily cleaned with the dust collecting case 105 taken out.

  In addition, since the inlet pipe 115 and the inner cylinder 131 of the cyclone separator 104 are provided below, the communication port 117 of the cyclone separator cylinder 104 and the upper opening 118 of the dust collecting case 105 can be provided in the upper part, and the dust collecting case 105 Since the dust that has entered falls down due to gravity, spillage into the cyclone separation cylinder 104 can be prevented.

  Further, since the upper opening 118 of the dust collection case 105 is disposed in front of the dust collection case 105, the upper opening 118 of the dust collection case 105 is disposed when the vacuum cleaner body 1 is stood up and stored. Since it is disposed above the dust case 105, it is possible to prevent dust that has entered the dust collection case 105 from spilling into the cyclone separation cylinder 104.

  Further, since the dust collecting case 105 is arranged on the side surface of the cyclone separating cylinder 104, the length direction of the cyclone separating cylinder 104 can be increased without increasing the height of the vacuum cleaner main body 1. It has the feature that the separation ability of can be increased.

  As shown in FIG. 15, when the electric blower 107 stops near the inlet pipe 115 and the electric blower 107 is operated, the outer pipe 135 of the cyclone separation cylinder 104 is closed. A valve 137 is provided so as to block between a part of the inner surface and the inner cylinder.

  For this reason, it is hard to receive fluid force, such as a ring, and heavy dust collides with the valve 137 and stops turning. For this reason, damage and breakage of the inner wall surface of the outer cylinder 135 can be prevented.

  Furthermore, it is possible to prevent dust from spilling when the operation of the electric blower 107 is stopped and the cyclone separating cylinder 104 is taken out.

  In addition, since heavy dust that is hard to receive fluid force does not enter the dust collection case 105 from the cyclone separation cylinder 104, the first auxiliary filter 106 of the dust collection case 105 is not broken, and dust is collected from the dust collection case 105. Can be prevented from coming off.

  As shown in FIG. 14, the cyclone separating cylinder 104 and the dust collecting case 105 may be provided integrally. In this case, the mass held by hand when the trash is thrown away becomes large, and the handling property is lowered. Since the communication passage 120 and the communication passage 145 are integrally configured between the dust collection case 105 and the dust collection case 105, perfect airtightness is maintained, so that an increase in loss due to leakage or the like can be suppressed, and suction work can be suppressed. The rate can be made higher.

  In addition, the communication passage 120, the communication passage 145, and the communication port 146 may be formed of separate members that come into contact with the lower case 101. However, when the inside of the communication passage is dirty, there is an aspect that it cannot be easily cleaned. However, it is possible to reduce the number of places that keep the whole airtight. Moreover, since the direction which maintains airtightness can be made into an up-down direction, the characteristic which is easy to maintain airtightness can be given.

  DESCRIPTION OF SYMBOLS 1 ... Vacuum cleaner main body, 101 ... Lower case, 102 ... Upper lid, 103 ... Dust collection part, 104 ... Cyclone separation cylinder, 105 ... Dust collection case, 106 ... First auxiliary filter, 107 ... Electric blower, 112 ... Second Auxiliary filter, 115 ... inlet pipe, 117 ... communication port, 120 ... communication passage, 131 ... inner cylinder, 145 ... communication passage, 146 ... communication port, 150 ... upper case.

Claims (5)

A vacuum cleaner body having a lower case and an upper case and having an electric blower built therein, a hose connection opening provided in the vacuum cleaner body to which a hose is connected, and an inner cylinder detachably provided in the vacuum cleaner body A vacuum cleaner comprising: a cyclone separator comprising: a dust collecting case that is detachably provided in the vacuum cleaner main body and contains dust separated by the cyclone separator;
The cyclone separator is
An inlet pipe communicating with the hose connection port located at the center in the width direction of the cleaner body with the cyclone separator and the dust collecting case mounted on the cleaner body;
An exhaust port provided in the inner cylinder;
A communication passage for flowing exhaust from the exhaust port,
The dust collection case is
A filter for separating dust from the dust-containing air flowing into the dust collection case;
The air that has passed through the communication passage merges with the air that has passed through the filter and is sucked into the electric blower,
The inner cylinder is
An electric vacuum cleaner, wherein an opening communicating with the exhaust port is formed except for a part near the inlet pipe. In claim 1,
The vacuum cleaner characterized in that the cyclone separator and the dust collecting case are integrally formed. In claim 1 or 2,
The cyclone separator has an outer cylinder having a substantially cylindrical shape,
The vacuum cleaner according to claim 1, wherein the inlet pipe is provided in the outer cylinder so that air flows in a direction substantially tangential to the cyclone separator. In any one of Claims 1 thru | or 3,
An electric vacuum cleaner comprising an upper lid that can be opened and closed on the main body of the vacuum cleaner, and the dust collecting case and the cyclone separator are removed from the main body of the vacuum cleaner by opening the upper lid. In claim 4,
A vacuum cleaner characterized in that the dust collecting case and the cyclone separator are lifted from the vacuum cleaner body when the upper lid is opened.

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