JP4271204B2 - Electric vacuum cleaner - Google Patents

Description

  The present invention relates to a vacuum cleaner including a dust collecting device that collects dust sucked by an electric blower.

Conventionally, this type of vacuum cleaner includes a vacuum cleaner body that houses an electric blower. The vacuum cleaner main body is provided with an air inlet that communicates with the suction side of the electric blower, and the air inlet is a cyclone dust collector that is a dust collector for dust collection that can be attached to and detached from the mounting portion of the vacuum cleaner main body. It is comprised so that it may communicate with the downstream of this. Here, the cyclone dust collector is provided with a centrifugal separator on the upper part of a cup-shaped main body that divides the dust collector inside. The centrifugal separation unit is provided at a suction port for sucking dust together with air, an air passage that is a substantially circular centrifugal separation unit continuous with the suction port, and a downstream end of the air passage. A dust collection opening through which the dust centrifuged from the air flows into the dust collection unit together with a part of the air is provided. Further, an exhaust port communicating with the suction side of the electric blower is provided at the rear portion of the main body, and a pleated filter is detachably provided at the exhaust port. Furthermore, a communication opening is formed in the upper part of the centrifugal separator, and a filter is provided in this communication opening. The communication opening communicates with a communication air passage provided in the lid body in a state in which the lid covering the mounting portion is closed, and the communication air passage is bent downward on the downstream side so that the intake port (For example, refer to Patent Document 1).
Japanese Patent Laying-Open No. 2004-267636 (page 4-5, FIG. 4)

  However, the above-described electric vacuum cleaner has a problem that the air path from the suction port to the intake port is bent up and down and becomes long, and the suction efficiency is not good.

  This invention is made | formed in view of such a point, and it aims at providing the vacuum cleaner which improved suction efficiency.

The present invention is provided on the upstream side of the electric blower and collects dust sucked in by the electric blower and between the dust collector and the electric blower on one side in the cleaner body. The vacuum cleaner main body has a hose connection port that opens to the front, and opens to the front, downstream of the hose connection port. A dust collector that opens toward the front, communicates with the downstream side of the connection opening, and sucks in dust through the drive of the electric blower. A centrifugal separation unit that centrifuges dust from the air, a dust collection unit that collects dust separated by the centrifugal separation unit, and an air that communicates with the dust collection unit and faces the intake port so that the dust is separated. It has an exhaust port that flows out to the intake port. A centrifugal separator is provided in the dust collection opening and a dust collection opening located at one side in the cleaner body at least partially facing the suction opening in the vicinity of the suction opening and communicating with the exhaust port. It has a filter and a communication opening that is located on the other side of the cleaner body and guides the centrifuged dust to the dust collecting part.

According to the present invention, the suction port communicating with the suction side of the electric blower and the dust collection opening of the centrifugal separator located near the suction port are provided on one side in the vacuum cleaner body, the hose connection port, the connection The opening, the intake port, and the suction port are opened forward, and at least a part of the dust collection opening is opposed to the suction port, so that the suction port continues to the intake port through the dust collection port and the exhaust port. The length of the air passage can be suppressed, the suction efficiency can be improved, and the communication opening of the centrifugal separator is located on the other side of the cleaner body, so that the influence of the suction air on the communication opening is suppressed and It is possible to easily guide the dust centrifuged at the separation unit from the communication opening to the dust collection unit.

  The configuration of an embodiment of the present invention will be described below with reference to FIGS.

  2 and 3, reference numeral 1 denotes a vacuum cleaner main body. The vacuum cleaner main body 1 includes a main body case 3 that houses an electric blower 2, and a vertical direction in which a rear portion is pivotally supported by the main body case 3. A lid 4 that can be opened and closed, and a dust collecting container 5 as a dust collecting device that is located on the upstream side of the electric blower 2 and can be attached to and detached from the main body case 3, and sucked together with the suction air generated by driving the electric blower 2 This is a so-called cyclonic vacuum cleaner that collects dust by centrifugal separation in a dust collecting container 5, and can travel on the floor as a surface to be cleaned.

  The main body case 3 accommodates a cord reel 7 around a power cord (not shown) that enables power supply from a commercial AC power source (not shown) to the electric blower 2 and the like below the electric blower 2. A dish-shaped placement portion 8 is provided at the front portion of the main body case 3. The mounting portion 8 is a portion on which the dust collecting container 5 is detachably mounted, and when the lid 4 is closed, the dust collecting container 5 can be sandwiched and fixed between the lid 4.

  The lid 4 is provided with a tube portion 11 at the front portion, the front portion which is the tip portion of the tube portion 11 becomes a hose connection port 12 for sucking air, and the rear portion which is the base end portion of the tube portion 11 is A connection opening 13 communicates with the suction side of the dust collecting container 5 fixed to the mounting portion 8.

  As shown in FIG. 6, the hose connection port 12 is connected to a base end portion of an elongated substantially cylindrical dust collection hose 15 that is flexible and can be bent. At the tip of the dust collecting hose 15, a hand operating unit 16 capable of selecting the operation mode of the electric blower 2 is provided. The hand operating section 16 is provided with a gripping section 17 that is gripped by an operator, and the gripping section 17 is provided with a plurality of operation switches 18 for setting the electric blower 2 and the like to a plurality of operation modes. .

  In addition, a telescopic elongated cylindrical extension tube 21 is detachably connected to the distal end of the hand operation unit 16. Further, the extension pipe 21 is detachably connected to a suction port body 22 that is placed on, for example, a carpet on the floor of the room and is a floor brush that sucks dust on the carpet. Yes.

  As shown in FIGS. 1 to 5, the dust collecting container 5 includes a dust collecting container main body 25 as an apparatus main body, and a substantially circular air passage in a plan view provided detachably on an upper portion of the dust collecting container main body 25. Forming body 26, bottom cover 27 as a dust collector lid supported pivotably at the lower part of dust collecting container main body 25, and fine dust separator detachably provided at the rear of dust collecting container main body 25 And a pleated filter unit 28.

  The dust collection container body 25 includes a wall 31 that forms an outer wall extending from the front part to both sides of the dust collection container 5, and an upper wall as an inclined wall part that blocks the upper part of the wall part 31 and continues in an inclined manner. A partition wall 33 as a partition wall portion extending continuously and rearwardly inside the wall portion 31 below the upper wall portion 32, and a continuous wall portion continuing downward from the rear portion of the partition wall 33 And a lower rear wall portion 35 as a supporting wall portion protruding from the inner side of the wall portion 31 at a lower rear portion of the lower wall 34. Then, a centrifuge separation unit 36, which is a cyclone separation unit that separates the sucked dust from the air, is formed between the upper part of the upper wall part 32 and the air passage forming body 26, and the wall part 31, the partition wall 33, and the lower wall are formed. 34 is formed with a dust collecting portion 37 which is a first dust collecting portion for storing relatively large dust separated by the centrifugal separator 36, and includes a wall portion 31, a lower portion of the upper wall portion 32, and a partition wall 33. A negative pressure chamber portion 38 to which the pleat filter portion 28 can be attached and detached is formed between the lower wall 34 and the rear portion of the lower wall 34, and a relatively small dust is accommodated between the lower wall 34 and the lower rear wall portion 35. A fine dust collecting portion 39 which is a two dust collecting portion is formed.

  A grip 41 for gripping the dust collecting container 5 is provided at the front of the wall 31. The lower end portion of the wall portion 31 is a waste opening 42 that communicates with the dust collecting portion 37 and can be opened and closed by the bottom lid 27. The disposal opening 42 allows the dust contained in the dust collecting portion 37 and the fine dust collecting portion 39 to be discarded outside the dust collecting container 5.

  The upper wall portion 32 forms the bottom surface of the centrifugal separation portion 36 and is formed to be inclined downward toward the front side. Accordingly, the centrifuge 36 is formed such that one side, that is, the left side shown in FIG. 1 is inclined upward from the upstream side to the downstream side, and the other side, ie, the right side shown in FIG. 1 is inclined downward from the upstream side to the downstream side. It is formed to become. The upper wall portion 32 is formed with a circular portion 43 having a circular shape in plan view formed along the outer shape of the air passage forming body 26, and along the circumference of the circular portion 43, the air passage forming body 26 is formed. A rib 44 that can be attached is projected upward. Further, the circular portion 43 has a circular ventilation opening 45 formed in the center thereof, and an opening 46 as a dust collection opening is formed on one side of the ventilation opening 45, and the ventilation portion 45 A rear end opening 47 as a communication opening is formed on the other side of the opening 45.

  The ventilation opening 45 is provided with a dust separator 51 as a first dust separator. The dust separator 51 includes a frame 52 formed in a truncated cylindrical shape, and a net filter 53 as a first dust separator provided in an opening 52a of the frame 52. The centrifugal separator 36 and the negative pressure chamber 38 are communicated with each other through the opening 52a and the vent opening 45.

  The opening 46 communicates the centrifuge 36 and the negative pressure chamber 38, and is positioned near the inclined lower end of the upper wall 32, that is, at the upstream end of the centrifuge 36. The opening 46 is formed in a fan shape from the front side of the ventilation opening 45 of the circular portion 43 to the rear side of the ventilation opening 45, and is one side in the cleaner body 1, for example, the front-rear direction of the cleaner body 1. Is shifted to the left side shown in FIG. 1, in other words, to one side in the direction intersecting the suction direction of the electric blower 2. Further, the opening 46 is provided with a grid rib 55 that divides the opening 46 in a lattice shape, and a net filter 56 that is a second dust separator as a filter.

  The rear end opening 47 communicates the downstream side of the centrifuge part 36 with the dust collecting part 37, is located at the side of the opening 46 at the lowermost inclined end of the upper wall part 32, and the downstream end part of the centrifuge part 36 is It constitutes. Further, the rear end opening 47 intersects the other side in the cleaner body 1, for example, the right side shown in FIG. 1 with respect to the center line in the left-right direction along the front-rear direction of the cleaner body 1, that is, the suction direction of the electric blower 2. It is displaced to the other side of the direction. In other words, the rear end opening 47 is located on the opposite side of the opening 46 with respect to the left-right direction of the cleaner body 1. Further, an introduction plate 58 that is inclined to the lower front side is extended to the rear end portion of the rear end opening 47 toward the dust collection portion 37 side.

  The partition wall 33 is continuous to a position between the front side of the opening 46 and the rear end opening 47, and is formed to be slightly inclined downward toward the rear.

  The lower wall 34 is formed so as to be inclined downward from the rear part of the partition wall 33 and the rear part of the rear end opening 47. The lower wall 34 is formed with a large number of openings 61 in the form of a lattice that communicate with the negative pressure chamber portion 38 on the downstream side of the dust collecting portion 37, and a third dust is formed in each of the openings 61. A net filter 62 as a separator is provided.

  The lower rear wall portion 35 is formed in a continuous longitudinal shape across the left and right sides of the interior of the wall portion 31, and a placement wall portion 63 for placing the pleat filter portion 28 is formed horizontally on the upper end portion. Yes. A horizontally long exhaust port 64 is defined by the mounting wall portion 63, both sides of the rear end portion of the wall portion 31, and the rear end portion of the upper wall portion 32. The exhaust port 64 communicates with the downstream side, which is the rear portion of the negative pressure chamber 38, and a circular intake port that communicates with the suction side of the electric blower 2 with the dust collecting container 5 attached to the main body case 3. Opposite to face 65.

  Here, the intake port 65 is formed in a partition wall (not shown) located in front of the electric blower 2 and is located between the main body case 3 of the cleaner body 1 and the dust collecting container 5. 1 on the left side shown in FIG. 1 with respect to the center line in the left-right direction along the front-rear direction of the vacuum cleaner body 1, in other words, on one side in the direction intersecting the suction direction of the electric blower 2 Yes. That is, the intake port 65 is located on the same side as the opening 46 with respect to the left-right direction of the cleaner body 1 and on the opposite side to the rear end opening 47, that is, on the diagonal side. For this reason, the opening 46, the exhaust port 64, and the intake port 65 are arranged so as to be aligned substantially in a straight line when viewed from the front.

  On the other hand, in the air passage forming body 26, a substantially circular protruding tube portion 67 that forms a substantially circular suction port 66 is located at the front end portion, and the rear end portion of the protruding tube portion 67 is clockwise in a plan view. A spiral portion 68 formed in a spiral shape in the direction is continuously formed, and a receiving projection 69 having a circular shape in plan view is formed at the center of the spiral portion 68.

  The protruding tube portion 67 is a portion that communicates with the hose connection port 12 through the connection opening 13 in a state where the dust collecting container 5 is attached to the main body case 3. For this reason, the suction port 66 is located substantially at the center in the left-right direction of the cleaner body 1, is an opening through which dust is sucked together with air by driving the electric blower 2, and in the vicinity of the downstream side of the suction port 66. The opening 46 is located.

  The spiral portion 68 has an arc shape with a cross-section projecting upward, and the downstream vertical dimension gradually decreases relative to the upstream projecting tube portion 67 side, and the downstream end projects. It is formed so as to enter the lower part of the pipe part 67. Accordingly, the circulating air passage W as an air passage defined between the spiral portion 68 and the dust collecting container body 25 is configured such that the upstream cross-sectional area is smaller than the downstream cross-sectional area. .

  The housing projecting portion 69 is formed so that the upper end portion of the frame body 52 of the dust separating portion 51 is fitted.

  The front end of the bottom lid 27 is pivotally supported on both side portions of the wall portion 31 of the dust container main body 25 so as to be rotatable. The bottom lid 27 can be opened by operating a button 71 provided on the handle 41 of the dust collecting container 5.

  Further, the pleated filter section 28 includes a pleated filter body 73 as a fourth dust separator and a frame body (not shown) that holds the pleated filter body 73, and is attached so as to close the exhaust port 64.

  The pleated filter body 73 is formed such that pleat crests and pleat troughs along the vertical direction are alternately continued in the left-right direction of the cleaner body 1. Means 74 are provided.

  The dust removing means 74 includes a reciprocating body (not shown) that can reciprocate in the left-right direction of the cleaner body 1, and a protrusion 75 that is provided integrally with the reciprocating body. By engaging the pleat peak shallowly and reciprocating the reciprocating body left and right, the protrusion 75 moves over the pleat peak, thereby giving vibration to the pleat filter body 73 and attaching to the pleat filter body 73. It is configured to drop the dust onto the fine dust collecting unit 39.

  The reciprocating body is controlled so as to reciprocate for a predetermined time when driving of the electric blower 2 is stopped, for example.

  Next, the operation of the above embodiment will be described.

  First, the lid body 4 is rotated upward to be opened, and the dust collecting container 5 having the air passage forming body 26 attached to the upper wall portion 32 and the pleat filter portion 28 attached to the exhaust port 64 is placed on the placement portion 8. In the placed state, the lid body 4 is rotated downward, and the dust collecting container 5 is sandwiched between the lid body 4 and the placing portion 8.

  At this time, the suction port 66 of the dust collecting container 5 is coaxially connected to the connection opening 13 of the tube portion 11 of the lid body 4 and is attached to the exhaust port 64 of the dust collecting container 5 and the exhaust port 64. The pleated filter unit 28 faces the intake port 65 of the electric blower 2.

  Next, the dust collecting hose 15, the extension pipe 21 and the suction port body 22 are sequentially connected to the hose connection port 12, and a power cord (not shown) is led out from the main body case 3 and connected to a commercial AC power source. Operate the desired operation switch 18 while holding the 17 to drive the electric blower 2 in the desired operation mode, ground the suction port body 22 on the floor surface and run forward and backward, and from the tip side to the floor Inhale dust on the surface with air.

  The sucked air becomes a suction air and passes from the suction port 66 of the dust collecting container 5 to the centrifugal separator 36 via the suction port body 22, the extension pipe 21, the dust collection hose 15, the hose connection port 12 and the connection opening 13. And sucked.

  Most of this suction air passes straight through the opening 46 to the negative pressure chamber portion 38, and during this passage, dust is collected by the net filter 56, and the remaining portion is the circulating air passage portion. The inside of W flows in a circular shape along the periphery of the dust separator 51.

  At this time, a part of this suction air passes through the opening 52a and flows into the negative pressure chamber 38, and dust is collected by the net filter 53 during this passage, and the remaining part is further As the flow goes downstream, the cross-sectional area of the circulating air passage portion W becomes narrower, so that a flow velocity is secured to the downstream end, and the air flows to the rear end opening 47 and flows into the dust collecting portion 37 from the rear end opening 47.

  Of the dust contained in the suction air flowing into the dust collection part 37, relatively large coarse dust falls into the dust collection part 37 and is collected as it is, and relatively small fine dust is opened by the suction air. When passing through 61 and flowing into the negative pressure chamber section 38, it is collected by the net filter 62.

  When the suction air merged in the negative pressure chamber portion 38 passes through the pleated filter body 73 of the pleated filter portion 28, fine air dust that has not been collected by the net filters 53, 56, 62 on the pleated filter body 73. Is collected.

  The suction air that has passed through the pleated filter body 73 is exhausted from the exhaust port 64 to the outside of the dust collecting container 5 and then sucked into the electric blower 2 from the intake port 65 and passes through the electric blower 2 to be exhausted. Thus, the air is exhausted to the outside of the cleaner body 1 through an exhaust hole (not shown) formed in the main body case 3.

  When the cleaning is finished and the operator operates the operation switch 18 to stop the driving of the electric blower 2, the reciprocating body attached to the pleat filter unit 28 reciprocates in the left-right direction, so that the protrusion 75 is pleated. Fine dust adhering to the filter body 73 is dropped from the pleated filter body 73 to the fine dust collecting portion 39.

  Thereafter, the operator opens the lid 4 by rotating the lid 4 upward, removes the dust collecting container 5 from the main body case 3, and then opens the bottom lid 27 by pressing the button 71 on a trash can, for example. From the disposal opening 42, the dust in the dust collecting portion 37 and the dust in the fine dust collecting portion 39 are discarded.

  Further, the air passage forming body 26 is removed from the dust collecting container body 25, and the net filters 53, 56 and the like are cleaned.

  And after returning the air path formation body 26 and the bottom cover 27, it attaches to the main body case 3 again and uses it.

  As described above, according to the above-described embodiment, by reducing the cross-sectional area of the circulating air passage portion W on the downstream side from the upstream side, the wind speed of the suction air passing through the circulating air passage portion W can be reduced. It is possible to secure the dust downstream and maintain the inertia of the dust, and reliably collect the dust sucked from the suction port 66 and centrifuged at the centrifugal separator 36 from the rear end opening 47 to the dust collector 37. it can.

  That is, most of the suction air sucked into the centrifugal separator 36 from the suction port 66 flows linearly into the negative pressure chamber 38 through the opening 46, and thus circulates in the circulation air passage W. Since the intake air is relatively small and the wind speed downstream is weakened, reducing the cross-sectional area on the downstream side ensures sufficient wind speed to guide the dust to the rear end opening 47 and collect the dust. It is possible to reliably lead to the dust part 37.

  Further, by reducing the height dimension of the air passage forming body 26 from the upstream side to the downstream side, the cross-sectional area of the circulating air passage portion W can be easily reduced from the upstream side to the downstream side.

  Further, by making it possible to remove the air passage forming body 26 from the dust collecting container main body 25, it is possible to improve the cleanability of the net filters 53, 56 and the like.

  Then, by providing a net filter 56 that allows air to pass to the electric blower 2 in the vicinity of the suction port 66, the net filter 56 can be positioned at a position where the wind speed of the suction air is high and dust is difficult to fall. The net filter 56 can be prevented from being immediately clogged, and the flow of the shortcut of the suction air passing from the net filter 53 of the dust separation unit 51 to the negative pressure chamber 38 is suppressed, and the circulation air passage W It is possible to secure the suction air that circulates around and to guide the dust to the dust collecting portion 37 more reliably.

  In addition, by providing an intake port 65 communicating with the suction side of the electric blower 2 and an opening 46 located in the vicinity of the suction port 66 on one side in the cleaner body 1, the opening 46 and the exhaust gas are provided from the suction port 66. The length of the air passage continuing to the intake port 65 through the port 64 can be suppressed, the suction efficiency can be improved, and the rear end opening 47 is positioned on the other side in the cleaner body 1 so that the rear end The influence of the suction air to the opening 47 can be suppressed, and the dust centrifuged by the centrifugal separator 36 can be easily guided from the rear end opening 47 to the dust collecting part 37.

  That is, by providing the intake port 65 on the same side as the opening 46, the intake air can flow from the intake port 66 through the opening 46 and the exhaust port 64 to the intake port 65 in a substantially straight line. The volume of the suction air that flows in a circumferential direction to 47 can be suppressed, and fine dust is preferentially collected by the net filters 53 and 56, so that only relatively large dust is collected in the dust collecting part 37. It becomes possible.

  As a result, the inflow of fine dust into the dust collection chamber 37 can be suppressed, and the net filter 62 located in the dust collection chamber 37 can be prevented from being clogged with fine dust.

  In addition, by arranging the suction port 66 and the rear end opening 47 diagonally with respect to the suction direction, the suction air flows into the dust collecting chamber 37 in the direction opposite to the direction toward the suction side of the electric blower 2. Therefore, it is possible to more reliably suppress the net filter 62 from being clogged with fine dust.

  Furthermore, by forming one side, which is the upstream side of the centrifugal separator 36, with an upward slope from the upstream side to the downstream side, the opening 46 faces the suction port 66 in an inclined manner. Compared with the case where it is disposed horizontally with respect to the mouth, the suction air sucked from the suction port 66 is likely to flow straight into the opening 46, and the other side, which is the downstream side of the centrifugal separator 36, is By forming the slope downward from the upstream side to the downstream side, dust can be reliably dropped to the rear end opening 47 by its own weight using this slope.

  In the above embodiment, the configuration of the downstream portion including the dust collecting portion 37 of the dust collecting container 5 is not limited to the above configuration.

  Further, the cross-sectional shape of the air passage forming body 26 can be arbitrarily set.

  Further, the vacuum cleaner is not limited to the canister type, but is an upright type in which the suction port body 22 is formed directly on the lower surface of the vacuum cleaner body 1, and the vacuum cleaner body 1 and the suction port body 22 are integrated. Even a self-propelled electric vacuum cleaner or handy type can be used in correspondence.

It is a perspective view which shows a part of dust collector of the vacuum cleaner of one embodiment of this invention from the front. It is a longitudinal cross-sectional view which shows the vacuum cleaner provided with the dust collector of the vacuum cleaner same as the above. It is a perspective view which shows the vacuum cleaner main body of a vacuum cleaner same as the above. It is a top view which shows a part of dust collector of a vacuum cleaner same as the above. It is a perspective view which shows a part of dust collector of a vacuum cleaner same as the above from back. It is a perspective view which shows a vacuum cleaner same as the above.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Vacuum cleaner main body 2 Electric blower 5 Dust collection container as a dust collector
12 Hose connection port
13 Connection opening
32 Upper wall as an inclined wall
36 Centrifuge section
37 Dust collector
46 Opening as dust collection opening
47 Rear end opening as communication opening
56 Net filter as filter
64 Exhaust vent
65 Air intake
66 Suction port W Circulation air passage as air passage

Claims (3)

A vacuum cleaner body containing an electric blower,
A dust collecting device that is provided on the upstream side of the electric blower of the vacuum cleaner body and collects dust sucked in by the electric blower;
Between the dust collector and the electric blower, it opens forward to one side in the cleaner body, and includes an intake port communicating with the suction side of the electric blower.
The vacuum cleaner body is
A hose connection opening that opens forward,
A connection opening that opens toward the front and communicates with the downstream side of the hose connection port.
The dust collector is
A suction opening that opens toward the front, communicates with the downstream side of the connection opening, and sucks dust by driving the electric blower.
A centrifuge for centrifuging the dust sucked from the suction port from the air;
A dust collecting part for storing dust separated by the centrifugal separator;
The exhaust port communicates with the dust collecting portion and faces the intake port, and the air from which dust is separated flows out to the intake port.
The centrifuge is
In the vicinity of the suction port, at least partly facing the suction port, located on one side in the cleaner body, and a dust collection opening communicating with the exhaust port;
A filter provided in the dust collection opening;
An electric vacuum cleaner characterized in that it has a communication opening located on the other side of the main body of the vacuum cleaner and guiding the centrifuged dust to the dust collecting part. The centrifugal separation section forms a loop-shaped air passage from one side where the upstream side communicates with the suction port to the other side where the downstream side communicates with the dust collecting portion, and one side of this air passage extends from the upstream side to the downstream side. The vacuum cleaner according to claim 1, wherein the vacuum cleaner is inclined upward and the other side of the air passage is inclined downward from the upstream side to the downstream side. The centrifuge part has a bottom surface formed by an inclined wall part inclined upward from the front side to the rear side,
The vacuum cleaner according to claim 2, wherein a part of one side of the inclined wall portion faces the suction port, and a dust collection opening is formed at a position facing the suction port.

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