CN213542663U

CN213542663U - Indoor unit of air conditioner

Info

Publication number: CN213542663U
Application number: CN202022042523.6U
Authority: CN
Inventors: 李宗强; 郭嘉兴
Original assignee: Qingdao Haier Air Conditioner Gen Corp Ltd; Qingdao Haier Air Conditioning Electric Co Ltd; Haier Smart Home Co Ltd
Current assignee: Qingdao Haier Air Conditioner Gen Corp Ltd; Qingdao Haier Air Conditioning Electric Co Ltd; Haier Smart Home Co Ltd
Priority date: 2020-09-17
Filing date: 2020-09-17
Publication date: 2021-06-25
Anticipated expiration: 2030-09-17

Abstract

The utility model relates to an indoor unit of air conditioner, it includes: the air conditioner comprises a shell, wherein an air inlet is formed in the shell; and a plurality of mutually independent purification modules, detachably sets up in air intake department, wherein every purification module all sets up to the part air intake region that covers the air intake controlledly, and every purification module all includes the anion generating device and the dust arrester that stack set up, and anion generating device is used for the ionization air that flows through it when letting in current so that the particulate matter that carries in the air is electrified, and the dust arrester is used for adsorbing the electrified particulate matter in the air that flows through it when letting in current. Therefore, the number of the purification modules covering the air inlet can be selected according to needs, so that the air inlet is not covered by all the purification modules all the time, the wind resistance at the air inlet is reduced, and the air inlet volume and the air outlet volume of the indoor unit of the air conditioner are increased. And, the purification module can be cleaned, can be reused after drying, need not to change the consumptive material, has reduced use cost.

Description

Indoor unit of air conditioner

Technical Field

The utility model relates to an air conditioning technology especially relates to an air conditioning indoor unit.

Background

With the continuous development of economy, the proportion of smiling particles in urban air is continuously increased due to the rapid increase of urban large-scale building construction and automobiles. Especially, particulate matters such as PM2.5 and the like are important factors causing air pollution, and the harm of indoor air pollution to human bodies exceeds outdoor air pollution, so that the control of indoor particulate matter pollution is very important.

At present, many air conditioners with a dust removal function are available in the market, and particulate matters polluted by PM2.5 and the like in indoor air can be removed. However, most dust removing devices in the existing air conditioners use HEPA filter screens with large wind resistance to completely cover the air inlets or nearly completely cover the air inlets, and in order to ensure that the refrigerating and heating functions cannot be influenced or are slightly influenced, a transmission mechanism is required to be added to control the movement of the filter screens. In the cooling and heating state, the purification function cannot be operated, and the purification function can only be operated in the air supply mode. And utilize HEPA filter screen windage great, the filter screen is easily stopped up by the dust, holds the dirt volume low, needs periodic replacement, and the replacement cost is expensive. In the other dust removing device, an anion generator is additionally arranged at the left side or the right side of the air outlet, however, the survival time of anions in the air is short, the anions cannot be distributed in the whole space, and the dust removing effect is not obvious.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an aim at overcoming at least one defect among the prior art, provide an air conditioning indoor unit that has purification dust removal function, and the air output is big.

The utility model discloses a another purpose is to improve the dust removal effect of machine in the air conditioning, reduce use cost.

It is another object of the present invention to improve the user experience.

In order to achieve the above object, the utility model provides an indoor unit of air conditioner, it includes:

the air conditioner comprises a shell, a fan and a fan, wherein an air inlet is formed in the shell; and

a plurality of mutually independent purification modules detachably arranged at the air inlet, wherein

Each purification module is set to cover in a controlled manner a part of the air inlet area of the air inlet, and each purification module comprises a negative ion generation device and a dust collection device which are arranged in a superposed manner, wherein the negative ion generation device is used for ionizing air flowing through the negative ion generation device when current is introduced so as to charge particles carried in the air, and the dust collection device is used for adsorbing charged particles in the air flowing through the dust collection device when current is introduced.

Optionally, a plurality of the purification modules are arranged side by side along the extending direction of the air inlet.

Optionally, the indoor unit of an air conditioner further includes:

and each driving device is connected with a corresponding one of the purification modules and is used for controllably enabling the purification module to be switched between a purification position covering a part of the air inlet area of the air inlet and a non-purification position opening the part of the air inlet area.

Optionally, one end of each of the purification modules is provided with a rotating shaft connected to the corresponding driving device, so as to rotate around the rotating shaft under the driving of the driving device.

Optionally, the rotating shafts of a plurality of the purification modules are in the same straight line.

Optionally, a frame for supporting the plurality of purification modules is covered at the air inlet, and a plurality of first electric connectors electrically connected with a circuit board of the indoor unit of the air conditioner are arranged on the frame;

and the edge part of each purification module is provided with a second electric connecting piece electrically connected with the anion plate and the dust collecting device thereof, so that the second electric connecting piece is electrically connected with a corresponding first electric connecting piece when the purification module covers part of the air inlet area of the air inlet.

Optionally, the indoor unit of an air conditioner further includes:

the air quality sensor is used for detecting the air quality of the indoor space where the indoor unit of the air conditioner is located; and is

The number of purification modules covering a part of the air intake area of the air intake is inversely proportional to the air quality.

Optionally, when each of the purification modules covers a part of the air inlet area of the air inlet, the negative ion generating device of the purification module is located upstream of the dust collecting device of the purification module in the airflow flowing direction at the air inlet.

Optionally, the negative ion generating device comprises an electrode plate and at least one discharge needle; and is

The electrode plate is provided with at least one through hole for air to flow through, and at least one discharge needle is arranged in each through hole so as to charge particles carried in the air flowing through the through holes through discharge of the discharge needles.

Optionally, the dust collecting device comprises at least one dust collecting unit, each dust collecting unit comprises a first polar plate and a second polar plate which are arranged oppositely and in parallel, so that the charged particles are adsorbed on two opposite surfaces of the first polar plate and the second polar plate.

The utility model discloses an indoor set of air conditioning includes a plurality of mutually independent purification module, and every purification module all covers the partial air inlet region of air intake controlledly, consequently, can select the quantity that covers the purification module in air intake department as required or according to user's own settlement for the air intake is not covered by purification module is whole constantly, has reduced the windage of air intake department, has improved the intake of indoor set of air conditioning, and then has improved its air output.

Simultaneously, the purification module of this application is in the same place anion generating device and dust collecting device are integrated, and anion generating device's ionization makes the particulate matter that carries in the air electrified, and dust collecting device can adsorb electrified particulate matter in time to particulate matters such as PM2.5 or dust in the filtering air in time, particulate matters such as PM2.5 or dust can not the large tracts of land diffusion, and dust removal effect is better. And, this purification module can dismantle it and get off through the mode sanitization of washing under dirty condition, can multiplex after drying, need not to change the consumptive material, has reduced user's use cost.

Further, the purification module that anion generating device and dust collecting device integration formed together of this application compares in traditional HEPA filter screen windage little much, has further reduced the windage of air intake department to no matter be in the air conditioning indoor set and refrigerate the mode, heat the mode or the air supply mode can all open purification performance, improved user's use and experienced.

The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.

Drawings

Some specific embodiments of the present invention will be described in detail hereinafter, by way of illustration and not by way of limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:

fig. 1 is a schematic side view of an air conditioning indoor unit according to an embodiment of the present invention;

fig. 2 is a schematic top perspective view of an air conditioning indoor unit according to an embodiment of the present invention;

fig. 3 is a schematic top view of a structure related to an air inlet of an indoor unit of an air conditioner according to an embodiment of the present invention;

FIG. 4 is a schematic block diagram of a purification module according to one embodiment of the present invention;

FIG. 5 is a schematic enlarged view of portion A of FIG. 3;

fig. 6 is a schematic structural view of a dust collecting device according to an embodiment of the present invention.

Detailed Description

The utility model provides an air-conditioning indoor unit. Fig. 1 is a schematic side view of an air conditioning indoor unit according to an embodiment of the present invention, and fig. 2 is a schematic top perspective view of the air conditioning indoor unit according to an embodiment of the present invention. Referring to fig. 1 and 2, an air conditioning indoor unit 1 of the present invention includes a casing 10 and a plurality of independent purification modules 20. An air inlet 11 (see fig. 3) is formed in the casing 10, and is used for introducing air in an environmental space where the indoor unit of the air conditioner is located into the casing 10. The casing 10 may further be provided with an air outlet for sending the air in the casing 10 to the environmental space. Further, the indoor unit 1 of the air conditioner may further include an evaporator and a fan disposed in the casing 10, the evaporator may have a plurality of heat exchange tubes and a plurality of heat exchange fins, and a heat exchange gap allowing air to directly pass therethrough and to exchange heat therewith is formed between the plurality of heat exchange fins, thereby changing a temperature of air flowing therethrough. The fan is used for promoting air to enter the shell 10 through the air inlet 11 and sending the air to the air outlet after heat exchange of the evaporator, and the fan can be a cross-flow fan, an axial flow fan or a centrifugal fan.

Fig. 3 is a schematic plan view of a structure related to an air inlet of an indoor unit of an air conditioner according to an embodiment of the present invention. In particular, a plurality of mutually independent purification modules 20 are detachably arranged at the air inlet 11, and each purification module 20 is arranged to controllably cover a part of the air inlet area of the air inlet 11. Therefore, the number of the purification modules 20 covering the air inlet 11 can be selected according to needs or according to the setting of the user, so that the air inlet 11 is not covered by all the purification modules 20 all the time, the wind resistance at the air inlet 11 is reduced, the air inlet volume of the indoor unit of the air conditioner is increased, and the air outlet volume of the indoor unit of the air conditioner is increased.

Fig. 4 is a schematic structural diagram of a purification module according to an embodiment of the present invention, referring to fig. 4, each purification module 20 includes a negative ion generating device 21 and a dust collecting device 22, which are stacked, the negative ion generating device 21 is used for ionizing air flowing through the negative ion generating device when current is applied to the purification module to charge particles carried in the air, and the dust collecting device 22 is used for adsorbing charged particles in the air flowing through the dust collecting device when current is applied to the purification module. That is to say, the purification module 20 of this application is in the same place anion generating device 21 and dust collector 22 are integrated, and the ionization of anion generating device 21 makes the particulate matter that carries in the air electrified, and dust collector 22 can adsorb electrified particulate matter in time to particulate matter such as PM2.5 or dust in the timely filtered air, particulate matter such as PM2.5 or dust can not the large tracts of land diffusion, and dust removal effect is better. And, this purification module 20 can be dismantled it and get off through the mode sanitization of washing under dirty condition, can multiplex after drying, need not to change the consumptive material, has reduced user's use cost.

Further, the purification module 20 that the anion generating device 21 and the dust collecting device 22 of this application are integrated to form compares in traditional HEPA filter screen windage resistance little much, has further reduced the windage of air intake 11 department to no matter be in the air conditioning indoor unit 1 and refrigerate the mode, heat the mode or the air supply mode can all open purification performance, improved user's use and experienced.

In some embodiments, a plurality of purification modules 20 are arranged side by side along the extension direction of the intake vent 11. Thereby, it is convenient to adjust the size of the purified intake area of the intake vent 11 by adjusting the number of the purification modules 20 covering the intake vent 11, and to facilitate the installation and support of the plurality of purification modules 20.

Specifically, when the air conditioning indoor unit 1 is on-hook, the air inlet 11 thereof may be formed at the top of the cabinet 10 thereof and extend in the lateral direction. A plurality of purification modules 20 are arranged laterally next to one another at the air inlet 11. The total length of the plurality of purification modules 20 extending in the transverse direction may be the same as the width of the intake vent 11 in the transverse direction, or may be smaller than the width of the intake vent 11 in the transverse direction. When the indoor unit 1 of the air conditioner is a cabinet, the air inlet 11 may be formed at the front side of the cabinet 10 and extend in a vertical direction. A plurality of purification modules 20 are arranged side by side in the vertical direction at the air intake 11. The total length of the plurality of purification modules 20 extending in the vertical direction may be equal to the height of the air inlet 11 in the vertical direction, or may be smaller than the height of the air inlet 11 in the vertical direction. When the indoor unit 1 of the air conditioner is a cabinet, the air inlet located at the front side of the casing 10 of the air conditioner may also extend in the transverse direction, and at this time, the plurality of purification modules 20 are arranged at the air inlet 11 side by side in the transverse direction.

In some embodiments, the air conditioning indoor unit 1 further includes a plurality of mutually independent driving devices 30, and each driving device 30 is connected to a corresponding one of the purification modules 20 for controllably causing the purification module 20 to switch between a purification position covering a part of the intake air area of the intake vent 11 and a non-purification position opening the part of the intake air area. That is, the driving device 30 may drive the corresponding purification module 20 to move between its own purification position and non-purification position. When the purification module 20 is in the purification position, it covers a part of the air intake area of the air inlet 11, so that the air entering the casing 10 through the part of the air intake area can be purified. When the purification module 20 is in the non-purification position, it does not cover any area of the intake vent 11 and thus does not perform a purification function. Further, the driving device 30 may be electrically connected to the circuit board 60 of the air conditioning indoor unit 1 to operate under the control of the circuit board 60.

Specifically, in one embodiment, the indoor unit 1 may be a wall-mounted indoor unit, and the air inlet 11 is formed at the top of the casing 10. The purification module 20 is in a horizontally disposed state in the purification position, and the purification module 20 is in a vertically disposed state in the non-purification position. Of course, in other embodiments, the purification module 20 may be in a horizontal position when in the non-purification position, but does not cover any area of the intake vent 11.

In some embodiments, each purification module 20 is provided with a rotating shaft 40 connected to the corresponding driving device 30 at one end thereof, so as to rotate around the rotating shaft 40 under the driving of the driving device 30. That is, the purification module 20 moves in a rotational manner, which rotates about its own rotational axis 40 between its own purification position and non-purification position under the driving action of the driving device 30.

Specifically, the driving device 30 may be a motor, and the rotating shaft 40 is fixedly connected to a rotation output shaft of the motor to rotate under the power of the motor.

Further, the rotating shafts 40 of the plurality of purification modules 20 may be in the same straight line, so as to facilitate the structural design and make the appearance of the indoor unit 1 of the air conditioner more neat and beautiful. Specifically, in one embodiment, the rotating shafts 40 of the plurality of purification modules 20 may be positioned at the rear side of the top of the cabinet 10 and extend in the lateral direction of the cabinet 10.

In some alternative embodiments, the purification module 20 may also be moved in a translational manner. That is, the drive device 30 drives the purge module 20 to translate between its own purge position and a non-purge position. At this time, the driving device 30 may include a motor, a gear or a rack engaged with the purification module 20, and the like.

Fig. 5 is a schematic enlarged view of a portion a in fig. 3. In some embodiments, the air inlet 11 may be covered with a frame 50 for supporting a plurality of purification modules 20, and the frame 50 is provided with a plurality of first electrical connectors 51 electrically connected to a circuit board 60 of the indoor unit 1 of the air conditioner. Specifically, the frame 50 may be formed with a plurality of mounting portions each for mounting one purification module 20. One of the inner side surfaces of each mounting portion is provided with a first electrical connector 51.

Further, the edge portion of each purification module 20 is provided with a second electrical connector 23 electrically connected with its negative ion generation device 21 and dust collection device 22, so that when the purification module 20 covers part of the air intake area of the air intake 11, its second electrical connector 23 is electrically connected with a corresponding one of the first electrical connectors 51, so that the negative ion generation device 21 and the dust collection device 22 of the purification module 20 are electrically connected with the circuit board 60, so that the negative ion generation device 21 and the dust collection device 22 can be supplied with power through the circuit board 60.

That is, when the purification module 20 is in its purification position, its second electrical connector 23 is in positional correspondence and in electrical connection with the first electrical connector 51 on the mounting portion on which the purification module 20 is located. Accordingly, when the purification module 20 is in its non-purification position, the electrical connection between its second electrical connector 23 and the corresponding one of the first electrical connectors 51 is broken. Therefore, automatic power supply and power off of the purification module 20 are realized, and energy consumption is saved.

Specifically, the first electric connector 51 and the second electric connector 23 may each include a positive electrode and a negative electrode, the positive electrodes of the first electric connector 51 and the second electric connector 23 are connected, and the negative electrodes of the first electric connector 51 and the second electric connector 23 are connected. The first electrical connector 51 and the second electrical connector 23 may each be an electrical contact strip, such as a metal strip, or one may be an electrical pin and the other may be an electrical contact strip. The electrical contact may be a resilient contact.

In some embodiments, the air conditioning indoor unit 1 further includes an air quality sensor 70, and the air quality sensor 70 is configured to detect the air quality of the indoor space where the air conditioning indoor unit 1 is located. The air quality sensor 70 may be electrically connected to the circuit board 60 so as to generate the detected air quality information to the circuit board 60, thereby facilitating the circuit board 60 to control the operation of each driving device 30 according to the air quality information, and thus to adjust the position of each purification module 20.

Further, the number of the purification modules 20 covering a portion of the intake area of the intake vent 11 is inversely proportional to the air quality to improve the purification effect. That is, the better the air quality, the fewer the number of purification modules 20 (i.e., purification modules 20 in the purification position) covering a portion of the intake air area of the intake vents 11; the worse the air quality, the greater the number of purification modules 20 (i.e., purification modules 20 in the purification position) covering a portion of the intake air area of the intake vents 11. In the embodiment shown in fig. 2, the indoor unit 1 of the air conditioner includes two purification modules 20, and both purification modules 20 are in the purification position. In the embodiment shown in fig. 3, the indoor unit 1 of the air conditioner includes three purification modules 20, wherein two purification modules 20 at two sides are in the purification position, and the purification module 20 at the middle is in the non-purification position.

In some embodiments, when each purification module 20 covers a portion of the intake air area of the intake vent 11, that is, when the purification module 20 is in its purification position, the negative ion generating device 21 of the purification module 20 is located upstream of the dust collecting device 22 of the purification module 20 in the airflow flow direction at the intake vent 11. That is, the air passing through the purification module 20 passes through the negative ion generating device 21 and then passes through the dust collecting device 22. The negative ion generator 21 ionizes air flowing through it to release a large amount of small-particle-size negative ions (also called light particles) which have the characteristics of long migration distance, high activity and the like, and the particle size of the negative ions is in a nanometer level, so that the negative ions can be better combined with ultra-small particles (such as PM2.5 particles) suspended in the air to sufficiently charge the particles. The charged particles then flow through the dust collector 22 and are adsorbed on the electrode surface by the dust collector 22, thereby achieving the purpose of removing dust from the air. The dust collecting device 22 is arranged at the downstream of the negative ion generating device 21, so that charged particles can be adsorbed more fully and more quickly, and the dust removing effect of the indoor unit 1 of the air conditioner is better.

In some embodiments, the negative ion generating device 21 may include an electrode plate 211 and at least one discharge needle 212. The electrode plate 211 has at least one through hole 213 through which air flows, and at least one discharge needle 212 is disposed in each through hole 213 to electrically charge particulate matter carried in the air flowing through the through hole 213 by discharge of the discharge needle 212. Specifically, the electrode plate 211 may be provided with a plurality of through holes 213 uniformly arranged, and each through hole 213 is provided with one discharge needle 212 therein. The electrode plate 211 and the discharge needle 212 are respectively connected with electrodes with different polarities so as to discharge the discharge needle 212 when voltage is applied to the electrodes, thereby forming a plurality of strong electric fields up to ten thousand volts in the range between the discharge needle 212 and the edge of the through hole 213, and the negative ion generating device 21 releases ions so as to fully charge particulate matters in the air.

Specifically, the discharge needle 212 may be a tungsten needle having a discharge tip, and since the radius of curvature of the discharge tip is extremely small, the electric field strength between the discharge needle 212 and the through hole 213 is strong, so that the air flowing through the through hole 213 can be more sufficiently ionized, and more ions are released. The cross section of the through hole 213 is substantially circular, and the inner wall surface thereof is smooth or has fine tooth-shaped protrusions, so that the electric field generated between the discharge needle 212 and the through hole 213 is more uniform and stronger. In other embodiments of the present invention, the discharge needles 212 may have other structures capable of generating a relatively strong electric field with the electrode plate 211.

Further, the discharge needle 212 is supported in the through hole 213 by an electrode needle 214 located below the electrode plate 211 and extending in a diameter direction of the through hole 213, and the electrode needle 214 and the electrode plate 211 are connected to electrodes of different polarities of the second electrical connector 23, respectively. That is, the discharge needles 212 are inserted into the electrodes through the electrode needles 214. The plurality of through holes 213 may be uniformly distributed in rows and columns on the electrode plate 211, so that one electrode needle 214 may extend in a diameter direction of the entire row of through holes 213, that is, the plurality of discharge needles 212 of each row are supported on the same electrode needle 214, thereby simplifying the structure of the negative ion generating device 21.

Further, the discharge needle 212 may be located at the center of the through hole 213, and the extending direction of the discharge needle 212 may be perpendicular to the plate surface of the electrode plate 211, so that the discharge effect of the discharge needle 212 is better, more ions are generated by the negative ion generating device 21, and the dust removing effect of the indoor air conditioner 1 on the air is better. The discharge tip of the discharge needle 212 may be located in a plane where the through hole 213 is located, i.e., the discharge tip of the discharge needle 212 is flush with the upper surface of the electrode plate 211, so as to facilitate generation of a strong electric field between the discharge needle 212 and the electrode plate 211.

It should be understood by those skilled in the art that in other embodiments of the present invention, a plurality of discharge needles 212 may be disposed in each through hole 213, and the number of discharge needles 212 in each through hole 213 may be the same or different.

Fig. 6 is a schematic structural view of a dust collecting device according to an embodiment of the present invention. In some embodiments, the dust collection device 22 comprises at least one dust collection unit, each dust collection unit comprising a first plate 221 and a second plate 222 arranged in an opposing and parallel arrangement to adsorb charged particulate matter on two opposing surfaces of the first plate 221 and the second plate 222.

The first electrode plate 221 and the second electrode plate 222 can be respectively connected to the electrodes with different polarities of the second electrical connector 23, for example, the first electrode plate 221 is connected to a positive electrode, and the second electrode plate 222 is connected to a negative electrode, so that the charged particles are adsorbed onto two opposite surfaces of the two electrode plates by an electrostatic field between the first electrode plate 221 and the second electrode plate 222, thereby realizing dust removal. Specifically, the dust collecting device 22 may include a plurality of dust collecting units, which are arranged opposite to and spaced apart from each other.

Further, at least two opposite surfaces of the first and

second electrode plates

221 and 222 are coated with nano semiconductor carbon films. The nano semiconductor carbon film can enable the two polar plates to be polarized more easily, and enables an electric field between the two polar plates to be more uniform and stronger, so that the capacity of the dust collecting device 22 for adsorbing charged particles is improved, and the purification effect of the indoor unit 1 of the air conditioner is improved.

It should be understood by those skilled in the art that, without specific description, terms used to indicate orientation or positional relationship such as "upper", "lower", "inner", "outer", "horizontal", "front", "rear", and the like in the embodiments of the present invention are based on the actual use state of the air conditioning indoor unit 1, and these terms are only used for convenience of description and understanding of the technical solution of the present invention, and do not indicate or imply that the device or component to be referred to must have a specific orientation, and therefore, should not be interpreted as limiting the present invention.

Thus, it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been shown and described in detail herein, many other variations and modifications can be made, consistent with the principles of the invention, which are directly determined or derived from the disclosure herein, without departing from the spirit and scope of the invention. Accordingly, the scope of the present invention should be understood and interpreted to cover all such other variations or modifications.

Claims

1. An indoor unit of an air conditioner, comprising:

2. An indoor unit of an air conditioner according to claim 1,

the purification modules are arranged side by side along the extending direction of the air inlet.

3. An indoor unit of an air conditioner according to claim 1, further comprising:

4. An indoor unit of an air conditioner according to claim 3,

one end of each purification module is provided with a rotating shaft connected with the corresponding driving device so as to rotate around the rotating shaft under the driving of the driving device.

5. An indoor unit of an air conditioner according to claim 4,

the rotating shafts of the plurality of purification modules are positioned on the same straight line.

6. An indoor unit of an air conditioner according to claim 1,

the air inlet is covered with a frame for supporting the plurality of purification modules, and the frame is provided with a plurality of first electric connectors electrically connected with a circuit board of the indoor unit of the air conditioner;

7. An indoor unit of an air conditioner according to claim 1, further comprising:

8. An indoor unit of an air conditioner according to claim 1,

when each purification module covers part of the air inlet area of the air inlet, the negative ion generating device of the purification module is positioned at the upstream of the dust collecting device of the purification module in the airflow flowing direction of the air inlet.

9. An indoor unit of an air conditioner according to claim 1,

the negative ion generating device comprises an electrode plate and at least one discharge needle; and is

10. An indoor unit of an air conditioner according to claim 1,

the dust collecting device comprises at least one dust collecting unit, each dust collecting unit comprises a first polar plate and a second polar plate which are arranged oppositely and in parallel, so that the charged particles are adsorbed on two opposite surfaces of the first polar plate and the second polar plate.