Patent Description:
A cleaning appliance is an appliance for cleaning the indoor by sucking particles such as dust. It is general that a conventional cleaning appliance comprises a housing provided with an intake unit and an exhaust unit, a fan for moving the air entering the intake unit to the exhaust unit, a separator for separating particles from the air moving by the fan, a battery for supplying a power to the fan, and a handle provided in the housing.

Meanwhile, the conventional cleaning apparatus has a problem in that the center of gravity of the appliance is formed at a position far away from the handle because the intake unit is provided on a front surface of the housing, the handle is provided on a rear surface of the housing and the separator and the fan, which are heavy parts, are provided inside the housing.

The case that the center of gravity of the cleaning appliance is far away from the handle means that the center of gravity of the cleaning appliance is far away from a user's wrist, and if the center of gravity of the cleaning appliance is far away from a user's wrist, a problem occurs in that a big force is required for direction switching or position change of the cleaning appliance.

Also, the fan provided in the conventional cleaning appliance is generally provided to discharge the air toward the handle. However, in this case, since the air is discharged to the user's hands which are gripping the handle, a problem occurs in that displeasure is caused to the user.

<CIT> relates to a hand-held vacuum cleaner mainly comprises a main body and a vacuuming accessory connected thereto, the main body comprising a fuselage, a dust bucket connected to the fuselage, and a main suction pipe connected to the front side of the dust bucket and a handle connected to the rear side of the fuselage, the fuselage is connected with a cyclone cone assembly, and an air inlet filter assembly is arranged above the cyclone cone assembly. The rear side of the air filter assembly is provided with an air outlet filter assembly, a battery pack is accommodated in the fuselage, and a motor is arranged between the air inlet filter assembly and the air outlet filter assembly, so that it is located on the upper rear side of the main body. The cyclone cone assembly is detachably connected to the fuselage and includes a cyclone cone and a mesh filter wherein the mesh filter is located on the periphery of the cyclone cone.

An object of the present invention is to provide a cleaning appliance of which handling is easy.

Another object of the present invention is to provide a cleaning appliance which is capable of preventing the air from being discharged toward a user's hands.

The invention is specified by the independent claim.

The present invention provides a cleaning appliance comprising a first housing provided in a hollow cylinder shape: a second housing fixed to a circumferential surface of the first housing along a longitudinal direction of the first housing and provided with an intake unit through which the air enters; a third housing provided on a circumferential surface of the first housing along the longitudinal direction of the first housing and provided with an exhaust hole; a first communication hole for communicating the first housing with the second housing; a second communication hole for communicating the first housing with the third housing; a fan provided to include an impeller located in the third housing, a rotary shaft to which the impeller is fixed, and a motor rotating the rotary shaft, moving the air supplied from the second communication hole to the exhaust hole; a particle separator provided inside the first housing to provide a path for guiding the air entering the first communication hole to the second communication hole, separating particles from the air by using a centrifugal force; a battery housing protruded from a rear surface of the first housing located in a direction opposite to a position of the intake unit toward a direction far away from the first housing; a battery provided in the battery housing, supplying a power to the motor; and a handle having one end fixed to a rear surface of the third housing located in a direction opposite to the position of the intake unit and the other end fixed to the battery housing, wherein the center of gravity of the fan is located between the center of gravity of the particle separator and the center of gravity of the battery, and rotary shaft is parallel with a first reference line passing through the center of gravity of the particle separator along the longitudinal direction of the first housing.

The center of gravity of the fan may be located above the first reference line, and the center of gravity of the battery may be located below the first reference line.

The center of gravity of the handle may be located between the first reference line and a second reference line passing through the center of gravity of the fan along the longitudinal direction of the first housing.

The center of gravity of the fan, the center of gravity of the particle separator, the center of gravity of the battery, and the center of gravity of the handle may all be located on a single plane that includes the first reference line and the second reference line.

The handle may include a first handle body extended from the rear surface of the third housing along a longitudinal direction of the rotary shaft, providing a space for grip of a user, and a second handle body provided to connect a free end of the first handle body with an upper surface of the battery housing, providing a space for grip of a user.

A connection point of the first handle body and the second handle body may be located between the first reference line and the second reference line.

The first handle body may be inclined from the rear surface of the third housing toward the battery housing, and the second handle body may be inclined toward the rear surface of the third housing.

The particle separator may include a partition for partitioning an inner space of the first housing into a front space communicated with the first communication hole and a rear space communicated with the second communication hole, a partition through hole provided to pass through the partition, chamber bodies provided in a hollow cylinder shape, having one end fixed to the partition and the other end which is in contact with the front surface of the first housing, and partitioning the front space into a first chamber communicated with the first communication hole and a second chamber communicated with the partition through hole, a body partition partitioning an inner space of the second chamber into a first space communicated with the partition through hole and a second space which is not communicated with the partition through hole, a through hole provided to pass through the chamber bodies to communicate the first space with the first chamber, a path body provided in a pipe surrounding the partition through hole, having one end fixed to the partition and the other end communicated with the second space by passing through the body partition, a discharge pipe provided as a pipe extended from the partition through hole toward the body partition and provided inside the path body, an inlet provided to pass through the path body, guiding the air supplied to the through hole to the inside the path body, and an air flow forming portion provided in a screw shape between the discharge pipe and the path body, rotating the air entering the inlet inside the path body.

The fan may include a case provided in the third housing, storing the impeller therein, a case intake unit provided on one surface of the case headed for a rear surface of the third housing to allow the air to enter the inside of the case, and a case exhaust hole provided on one surface of the case headed for a front surface of the third housing to discharge the air inside the case to the outside, and the rotary shaft may be located on a straight line passing through the center of the case intake unit and the center of the case exhaust hole.

The cleaning appliance of the present invention may further comprise a first filter located between the second communication hole and the case intake unit, filtering the air, and a second filter located between the case exhaust hole and the exhaust hole to filter the air, wherein the second filter is provided to filter particles smaller than those filtered by the first filter.

The cleaning appliance of the present invention may further comprise a first filter located between the partition through hole and the second communication hole, filtering particles, and a second filter located between the case exhaust hole and the exhaust hole to filter particles, wherein the second filter is provided to filter particles smaller than those filtered by the first filter.

The present invention may provide a cleaning appliance that improves a user's convenience (handling) by decentering the center of gravity of components constituting the cleaning appliance based on a user's wrist.

Also, the present invention may provide a cleaning appliance which is capable of preventing the air from being discharged toward a user's hands.

Hereinafter, the present invention will be described with reference to drawings and embodiments, which specifically specify components of the present invention but are used to assist understanding of the present invention.

Also, specific components in the following embodiment may be exaggerated or downsized for convenience of description and understanding. Therefore, the present invention is not limited to the embodiment described below, and various corrections and modifications may be made from the embodiment by the person with ordinary skill in the art to which the present invention pertains.

<FIG> illustrates an example of a cleaning appliance <NUM> of the present invention. The cleaning appliance of the present invention comprises a housing <NUM> provided with a plurality of spaces <NUM>, <NUM> and <NUM> partitioned from one another, an intake hole <NUM> for allowing the air to enter the housing <NUM>, an exhaust hole <NUM> for allowing the air inside the housing <NUM> toward the outside of the housing <NUM>, a fan <NUM> provided inside the housing <NUM>, discharging the air inside the housing <NUM> toward the exhaust hole <NUM>, a particle separator <NUM> for guiding the air entering the intake hole <NUM> to the fan <NUM> and separating particles from the air by using a centrifugal force, and a handle <NUM> provided in the housing <NUM> to allow a user to grip it.

The handle <NUM> may be provided to be located at a point (spaced point of <NUM>°) symmetrical to a point, in which the intake unit <NUM> is located, in a space provided by a circumferential surface of the housing <NUM>.

The housing <NUM> may be provided in a hollow cylinder shape. The housing <NUM> includes a first housing <NUM> providing a space in which the particle separator <NUM> is stored, a second housing <NUM> fixed to a circumferential surface of the first housing <NUM> and provided with the intake hole <NUM>, and a third housing <NUM> fixed to a circumferential surface of the first housing <NUM> and provided with the fan and the exhaust hole <NUM>.

The second housing <NUM> and the third housing <NUM> may be provided along a longitudinal direction of the first housing <NUM>. That is, a horizontal line passing through the center of the second housing <NUM> may be fixed to the circumferential surface of the first housing <NUM> to be parallel with a horizontal line passing through the center of the first housing <NUM>, and a horizontal line passing through the center of the third housing <NUM> may also be fixed to the circumferential surface of the first housing <NUM> to be parallel with the horizontal line passing through the center of the first housing <NUM>.

The case that the horizontal line passing through the center of the first housing is parallel with the horizontal line passing through the center of the second housing <NUM> or the third housing means that a straight line passing through the center of the first housing is provided so as not to meet a straight line passing through the center of the second housing or the third housing. However, the second housing <NUM> and the third housing <NUM> may be fixed to the first housing <NUM> such that the horizontal line passing through the center of the second housing <NUM> is matched with the horizontal line passing through the center of the third housing <NUM>.

As shown in <FIG>, the first housing <NUM> is communicated with the second housing <NUM> through a first communication hole <NUM>, and is communicated with the third housing <NUM> through a second communication hole <NUM>. The air entering the intake hole <NUM> moves to the first housing <NUM> through the first communication hole <NUM>, and the air inside the first housing <NUM> moves to the third housing <NUM> through the second communication hole <NUM>.

A first housing discharge hole <NUM> opened or closed by a first cover <NUM> is provided on a front surface (point spaced apart from the point, in which the handle is located, as much as <NUM>°, one surface of the first housing toward a direction where the intake hole is located) of the first housing <NUM>.

The first cover <NUM> may rotatably be provided in the first housing <NUM>. In this case, a shaft <NUM> forming a rotation center of the first cover and a fastening unit <NUM> provided to face the shaft <NUM> may be provided on the circumferential surface of the first housing <NUM>, and a first cover body <NUM> coupled to the shaft <NUM> and a cover fastening unit <NUM> provided on a free end of the first cover body <NUM> and detachably coupled to the fastening unit <NUM> may be provided in the first cover <NUM>.

Moreover, a sealing portion <NUM> compressed between the first housing <NUM> and the first cover body <NUM> when the first housing discharge hole <NUM> is closed may further be provided in the first cover <NUM>. Preferably, the sealing portion <NUM> is made of an elastic body such as rubber.

As shown in <FIG>, a third housing discharge hole <NUM> opened or closed by a second cover <NUM> may be provided on a circumferential surface of the third housing <NUM>. The third housing discharge hole <NUM> may be provided to pass through a surface, which is parallel with the circumferential surface of the first housing <NUM>, in a space provided by the third housing <NUM>. In this case, the third housing discharge hole <NUM> may be provided in a space, which is located in a direction (Z-axis direction) orthogonal to a longitudinal direction (Y-axis direction) of the handle <NUM>, in the space provided by the third housing <NUM>.

The second cover <NUM> is provided with a second cover body <NUM> for opening or closing the third housing discharge hole <NUM>, wherein the second cover body <NUM> may be provided to form the circumferential surface of the third housing <NUM> when the third housing discharge hole <NUM> is closed. In this case, the exhaust hole <NUM> may be provided with a plurality of holes passing through the second cover body <NUM>.

The fan <NUM> is a means provided in the third housing <NUM>, moving the air inside the housing <NUM> to the exhaust hole <NUM>, and the particle separator <NUM> is a means provided in the first housing <NUM>, providing a path for guiding the air entering the first housing <NUM> through the first communication hole <NUM> to the second communication hole <NUM>. Particles such as dust contained in the air are separated from the air by a centrifugal force while the particle separator <NUM> is moving to the fan <NUM> along the path. A detailed structure of the particle separator is as follows.

As shown in <FIG>, the particle separator <NUM> includes a chamber forming portion <NUM> for forming a first chamber 41a and a second chamber 41b inside the first housing <NUM>, and a cyclone forming portion <NUM> for forming an air current arousing a centrifugal force while supplying the air inside the second chamber 41b to the fan <NUM>.

The chamber forming portion <NUM> may include a partition <NUM> for partitioning an inner space of the first housing <NUM> into a front space F communicated with the first communication hole <NUM> and a rear space R communicated with the second communication hole <NUM>, a partition through hole <NUM> provided to pass through the partition <NUM>, chamber bodies <NUM> and <NUM> provided as a cylinder having one end fixed to the partition <NUM> and the other end which is in contact with the first cover <NUM>, partitioning the front space R into two chambers 41a and 41b, and a body partition <NUM> for partitioning the second chamber 41b formed inside the chamber body <NUM> into a first space <NUM> and a second space <NUM>.

The chamber bodies may be provided as a first body <NUM> fixed to the partition <NUM> and a second body <NUM> fixed to the first body. In this case, the partition through hole <NUM> communicates the second chamber 41b with the rear space R of the first housing. That is, the first body <NUM> should be provided in a shape surrounding the partition through hole <NUM>.

The first body <NUM> and the second body <NUM> may be provided in a hollow cylinder shape, and the second body <NUM> may be provided such that its one end is fixed to a free end of the first body <NUM> and its other end is in contact with the sealing portion <NUM> of the first cover.

A plurality of body through holes <NUM> for communicating the first chamber 41a with the first space <NUM> are provided on a circumferential surface of the first body <NUM>. Therefore, the air entering the first chamber 41a through the intake hole <NUM> and the first communication hole <NUM> may be supplied to the first space <NUM> of the second chamber 41b through the body through holes <NUM>.

The body partition <NUM> is fixed to any one of the first body <NUM> and the second body <NUM> to partition the inside of the second chamber 41b into two spaces <NUM> and <NUM>. The first space <NUM> is a space communicated with the partition through hole <NUM>, and the second space <NUM> is a space which is not communicated with the partition through hole <NUM>.

A body discharge hole <NUM> (see <FIG>) opened or closed by the first cover body <NUM> is provided on the bottom of the second body <NUM>. Therefore, if the first cover body <NUM> opens the first housing discharge hole <NUM>, the body discharge hole <NUM> will be opened.

As shown in <FIG>, the cyclone forming portion <NUM> may include a path body <NUM> of which one end is fixed to the partition <NUM> and the other end is communicated with the second space <NUM> by passing through the body partition <NUM>, a discharge pipe <NUM> located inside the path body <NUM> and communicated with the partition through hole <NUM>, an inlet <NUM> provided to pass through a circumferential surface of the path body <NUM>, and an air flow forming portion <NUM> provided between an outer circumferential surface of the discharge pipe <NUM> and an inner circumferential surface of the path body.

The path body <NUM> is provided as a pipe surrounding the partition through hole <NUM>, and the discharge pipe <NUM> is located inside the path body <NUM>. The path body <NUM> is communicated with the second space <NUM> through a particle discharge hole <NUM> provided at one end (one end of the path body which is not fixed to the partition). The path body <NUM> may be provided to have a diameter which becomes smaller toward a free end. This is to strongly maintain intensity of the air flow.

The air flow forming portion <NUM> is provided in a screw shape, and the inlet <NUM> is located to be higher than the air flow forming portion <NUM>. Therefore, the air entering the path body <NUM> through the inlet <NUM> when the fan <NUM> is operated will move (cyclone movement) to be rotated inside the path body <NUM> in the middle of moving to the discharge pipe <NUM> through the air flow forming portion <NUM>.

If cyclone movement occurs inside the path body <NUM>, the particles contained in the air move to a rim (the circumferential surface of the path body) of the path by means of a centrifugal force and then remain in the path body <NUM> by means of gravity, and the air will be discharged to the rear space R through the discharge pipe <NUM>.

Unlike the shown drawing, the inlet <NUM> may be provided as a hole provided to pass through an upper surface of the path body <NUM>. In this case, an upper end of the path body <NUM> should be provided to be spaced apart from the partition <NUM> without being fixed to the partition <NUM>. Since the path body <NUM> is fixed to the partition <NUM> through the air flow forming portion <NUM> and the discharge pipe <NUM>, the path body <NUM> may maintain a state fixed to the partition <NUM> even though the upper end of the path body <NUM> is spaced apart from the partition <NUM>.

The cyclone forming portion <NUM> having the aforementioned structure may be provided with a plurality of cyclone forming portions. <FIG> illustrates an example of a particle separator <NUM> provided with nine cyclone forming portions <NUM>.

As shown in <FIG>, the fan <NUM> may include a case <NUM> provided in the third housing <NUM>, an impeller <NUM> rotatably provided inside the case, and a motor <NUM> fixed to the case, rotating the impeller <NUM>.

The case <NUM> is provided with a case intake hole <NUM> and a case exhaust hole <NUM>, wherein the case intake hole <NUM> is a means for allowing the air discharged from the second communication hole <NUM> to enter the case <NUM>, and the case exhaust hole <NUM> is a means for allowing the air inside the case <NUM> to be discharged to the discharge hole <NUM>.

The case intake hole <NUM> and the case exhaust hole <NUM>, which are capable of performing the aforementioned function, may be located anywhere in a space provided by the case <NUM>. <FIG> illustrates an example of a case that the case intake hole <NUM> is provided to pass through one surface of the case <NUM> headed for a rear surface (surface to which a handle is fixed) of the third housing <NUM> and the case exhaust hole <NUM> is provided to pass through one surface of the case <NUM> headed for a front surface of the third housing <NUM>.

The motor <NUM> is fixed to a support <NUM> provided in the case <NUM>. <FIG> illustrates an example of a case that the support <NUM> is located between the case intake hole <NUM> and the case exhaust hole <NUM> and a rotary shaft <NUM> is connected to the impeller <NUM> by passing through the support <NUM>. That is, the motor <NUM> may include a fixed unit <NUM> fixed to the support <NUM>, a stator <NUM> provided inside the fixed unit, and a permanent magnet <NUM> fixed to a free end (one of a rotary shaft located inside the fixed unit) of the rotary shaft <NUM>. The rotary shaft <NUM> may be located on a straight line passing through the center of the case intake hole <NUM> and the center of the case exhaust hole <NUM>.

Meanwhile, for filtering particles which are not removed through the particle separator <NUM>, the present invention may further include at least one of a first filter <NUM> and a second filter <NUM>. <FIG> illustrates an example of a case that the first filter <NUM> and the second filter <NUM> are provided in the cleaning appliance <NUM> of the present invention.

The first filter <NUM> may be located between the second communication hole <NUM> and the case intake hole <NUM> and provided to filter the air, and the second filter <NUM> may be located between the case exhaust hole <NUM> and the exhaust hole <NUM> and provided to filter the air.

The first filter <NUM> and the second filter <NUM> may be provided to filter particles having the same size, or may be provided to filter particles having different sizes. In the latter case, it is preferable that the second filter <NUM> filters particles smaller than those filtered by the first filter <NUM>. This is to minimize the amount of fine dust discharged to an indoor space.

In this case, a user may clean the first filter <NUM> and the second <NUM> by detaching them from the third housing <NUM> when detaching the second cover <NUM> from the third housing <NUM>.

Unlike the aforementioned description, the first filter <NUM> may be located between the partition through hole <NUM> and the second communication hole <NUM> to filter the air. In this case, it is preferable that the first filter <NUM> is provided to be drawn out of the first housing <NUM> through the circumferential surface of the first housing <NUM> and the second filter <NUM> is provided to detached from the third housing through the third housing discharge hole <NUM>.

The motor <NUM> provided in the fan <NUM> may be provided to be supplied with a power through a power source provided indoor, or may be provided to be supplied with a power through a battery <NUM> detachably provided in the housing <NUM>. In the latter case, the first housing <NUM> should be provided with a battery housing <NUM> for storing the battery <NUM>.

The battery housing <NUM> may be provided to be protruded from a rear surface (surface opposite to a position of the intake hole) of the first housing <NUM> toward a direction far away from the intake hole. In this case, one end of the handle <NUM> may be fixed to a rear surface (surface opposite to a position of the intake hole) of the third housing <NUM> and the other end of the handle <NUM> may be fixed to the battery housing <NUM>.

That is, the handle <NUM> may be provided with a first handle body <NUM> fixed to the rear surface of the third housing <NUM>, and a second handle body <NUM> connecting a free end of the first handle body <NUM> with an upper surface of the battery housing <NUM>.

The first handle body <NUM> is provided in a bar shape extended to a direction far away from the rear surface of the third housing <NUM>. One end of the second handle body <NUM> may be connected to a free end of the first handle body <NUM>, and the other end of the second handle body <NUM> may be fixed to an upper surface of the battery housing <NUM>. This is to allow a user to handle the cleaning appliance <NUM> even by using the first handle body <NUM> or to handle the cleaning appliance <NUM> even by using the second handle body <NUM>.

Preferably, the first handle body <NUM> is provided to be inclined from the rear surface of the third housing <NUM> toward the battery housing <NUM>, and the second handle body <NUM> is provided to be inclined toward the rear surface of the third housing <NUM>.

The battery <NUM> may detachably be coupled to the battery housing <NUM> through an insertion hole provided to pass through the bottom of the battery housing <NUM> or a side of the battery housing <NUM>.

If a height of the battery housing <NUM> is increased, since a length of the handle <NUM> may be reduced to cause inconvenience of a user, it is preferable that a length (length of Y-axis directional battery) of the battery <NUM> from the rear surface of the first housing <NUM> to a direction where the first handle body <NUM> is located is set to be longer than a length (length of Z-axis directional battery) of the battery <NUM> with respect to a height direction of the housing <NUM> and a length (length of X-axis directional battery) of the battery with respect to a diameter direction of the first housing <NUM>.

Hereinafter, an operation process of the cleaning appliance having the aforementioned structure will be described with reference to <FIG>.

If a power is supplied to the motor <NUM> to rotate the impeller <NUM>, the air enters the first chamber 41a through the intake hole <NUM> and the first communication hole <NUM>. Since the first communication hole <NUM> allows the air to enter the first chamber 41a along a tangent direction of a circumferential surface of the first chamber 41a, the air entering the first chamber 41a will cyclone move along the circumferential surface of the first chamber 41a.

If the air cyclone moves inside the first chamber 41a, particles will move to the circumferential surface of the first chamber 41a by a centrifugal force and then remain in the first housing by gravity, and the air will enter the second chamber 41b through the body through holes <NUM>.

The air entering the second chamber 41b moves to the path body <NUM> through the inlet <NUM>, and the air entering the path body <NUM> will cyclone move during the process of passing through the air flow forming portion <NUM>.

If cyclone movement occurs in the path body <NUM>, the particles contained in the air move to the circumferential surface of the path body <NUM> by a centrifugal force and then remain in the path body by gravity, and the air will be discharged to the outside of the housing <NUM> through the discharge pipe <NUM>, the partition through hole <NUM>, the second communication hole <NUM>, the case intake hole <NUM>, the case exhaust hole <NUM>, and the exhaust hole <NUM>.

Since the air discharged from the cleaning appliance through the exhaust hole <NUM> is discharged in a direction orthogonal to the position of the handle <NUM>, in the present invention, it is possible to prevent the air discharged from the cleaning appliance from being headed for a user's hands.

Meanwhile, the user may remove the particles collected in the second space <NUM> and the first chamber 41a by opening the first housing discharge hole <NUM> through the first cover <NUM>.

As shown in <FIG>, the center of gravity G2 of the fan is provided between the center of gravity G1 of the particle separator and the center of gravity G3 of the battery, and the rotary shaft <NUM> of the fan is provided in parallel with a straight line L1 (first reference line) passing through the center of gravity G1 of the particle separator along a longitudinal direction (Y-axis direction) of the first housing <NUM>.

The case that the rotary shaft <NUM> of the fan is provided in parallel with a straight line L1 passing through the center of gravity of the particle separator means that a straight line L2 (second reference line, horizontal line passing through the center of gravity of the fan) passing through the center of the rotary shaft along a longitudinal direction of the rotary shaft <NUM> does not meet the straight line L1 passing through the center of gravity of the particle separator by being spaced apart from the straight line L1 along a height direction (Z-axis direction) of the housing <NUM>.

If the particle separator <NUM> and the fan <NUM> are located up and down and thus two centers of gravities G1 and G2 are located on a vertical line, a problem occurs in that the center of gravity of the cleaning apparatus is far away from the handle <NUM>. The case that the center of gravity of the cleaning apparatus is far away from the handle <NUM> means that the center of gravity of the cleaning apparatus is located to be far away from the user's wrist, and if the center of gravity of the cleaning appliance is far away from the user's wrist, a problem occurs in that a big force is required for direction switching or position change of the cleaning appliance.

The case that the center of gravity G2 of the fan is located between the center of gravity G1 of the particle separator and the center of gravity G3 of the battery becomes a means for solving the problem that a big force is required for manipulation of the cleaning appliance by moving the center of gravity of the cleaning apparatus to a direction close to the handle <NUM>.

Meanwhile, if the rotary shaft is located in the straight line L1 passing through the center of gravity of the particle separator even though the center of gravity G2 of the fan is located between the center of gravity G1 of the particle separator and the center of gravity G3 of the battery, the center of gravity of the cleaning apparatus will be far away from the handle <NUM>. Therefore, the case that the rotary shaft <NUM> is not located on the straight line L1 passing through the center of gravity of the particle separator becomes a means for solving the problem that a big force is required for manipulation of the cleaning appliance.

Moreover, it is preferable that the center of gravity G2 of the fan is located to be higher than the center of gravity G1 of the particle separator, and the center of gravity G1 of the particle separator is located to be higher than the center of gravity G3 of the battery. That is, the center of gravity G2 of the fan may be provided to be located above the straight line L1 passing through the center of gravity of the particle separator and the center of gravity G3 of the battery may be provided to be located below the straight line L1 passing through the center of gravity of the particle separator.

Meanwhile, the center of gravity G4 of the handle may be provided to be located between the straight line L2 passing through the center of gravity G2 of the fan and the straight line passing through the center of gravity G1 of the particle separator. In this case, it is preferable that a connection point <NUM> between the first handle body <NUM> and the second handle body <NUM> is located between the straight line L2 passing through the rotary shaft <NUM> and the straight line L1 passing through the center of gravity of the particle separator. This is to allow a user to handle the cleaning apparatus <NUM> by using a small force through any one of the handle bodies <NUM> and <NUM>.

Claim 1:
A cleaning appliance comprising:
a first housing (<NUM>) provided in a hollow cylinder shape;
a second housing (<NUM>) fixed to a circumferential surface of the first housing (<NUM>) along a longitudinal direction of the first housing (<NUM>) and provided with an intake unit (<NUM>) through which the air enters;
a third housing (<NUM>) provided on a circumferential surface of the first housing (<NUM>) along the longitudinal direction of the first housing (<NUM>) and provided with an exhaust hole (<NUM>);
a first communication hole (<NUM>) for communicating the first housing (<NUM>) with the second housing (<NUM>);
a second communication hole (<NUM>) for communicating the first housing (<NUM>) with the third housing (<NUM>);
a fan (<NUM>) provided to include an impeller (<NUM>) located in the third housing (<NUM>), a rotary shaft (<NUM>) to which the impeller (<NUM>) is fixed, and a motor (<NUM>) rotating the rotary shaft (<NUM>), moving the air supplied from the second communication hole (<NUM>) to the exhaust hole (<NUM>);
a particle separator (<NUM>) provided inside the first housing (<NUM>) to provide a path for guiding the air entering the first communication hole (<NUM>) to the second communication hole (<NUM>), separating particles from the air by using a centrifugal force;
a battery housing (<NUM>) protruded from a rear surface of the first housing (<NUM>) located in a direction opposite to a position of the intake unit (<NUM>) toward a direction far away from the first housing (<NUM>);
a battery (<NUM>) provided in the battery housing (<NUM>), supplying a power to the motor (<NUM>); and
a handle (<NUM>) having one end fixed to a rear surface of the third housing (<NUM>) located in a direction opposite to the position of the intake unit (<NUM>) and the other end fixed to the battery housing (<NUM>),
characterized in that:
the center of gravity (G2) of the fan (<NUM>) is located between the center of gravity (G1) of the particle separator (<NUM>) and the center of gravity (G3) of the battery (<NUM>), and the rotary shaft (<NUM>) is parallel with a first reference line (L1) passing through the center of gravity (G1) of the particle separator (<NUM>) along the longitudinal direction of the first housing (<NUM>).