CN108870532B

CN108870532B - Ion wind generating device and air conditioner indoor unit

Info

Publication number: CN108870532B
Application number: CN201710344756.1A
Authority: CN
Inventors: 闫宝升; 李英舒; 关婷婷; 尹晓英
Original assignee: Qingdao Haier Air Conditioner Gen Corp Ltd
Current assignee: Qingdao Haier Air Conditioner Gen Corp Ltd; Haier Smart Home Co Ltd
Priority date: 2017-05-16
Filing date: 2017-05-16
Publication date: 2020-05-29
Anticipated expiration: 2037-05-16
Also published as: CN108870532A

Abstract

The invention relates to an ion wind generating device and an air conditioner indoor unit. The ion wind generating device comprises at least one discharge module used for generating ion wind, and each discharge module comprises a mesh electrode extending perpendicular to the air supply direction of the ion wind generating device, a plurality of needle electrodes distributed on one side of the mesh electrode and a needle frame used for fixing the needle electrodes. The needle frame is provided with a plurality of conducting rods which are parallel to each other and a plurality of reinforcing ribs which are parallel to each other, the conducting rods and the reinforcing ribs are arranged in a staggered mode, and a needle electrode is arranged at the intersection of each conducting rod and each reinforcing rib, so that the relative position of the needle electrodes is constant. The air-conditioning indoor unit comprises: the air conditioner comprises a shell, a fan and a fan, wherein the shell is provided with at least one air supply outlet for flowing out of air supply flow, and one or more air supply outlets are provided with an opening and closing mechanism for rectifying air supply; and at least one ion wind generating device arranged in the shell and used for providing ion wind to one or more air supply outlets.

Description

Ion wind generating device and air conditioner indoor unit

Technical Field

The present invention relates to air conditioning technology, and more particularly, to an ion wind generating device and an air conditioner indoor unit having the same.

Background

At present, the corona discharge ion air supply technology is taken as a unique air supply system, has the advantages of simple structure, no noise, air purification effect and the like, becomes a technology with great market potential and good application prospect, and becomes a hot research direction of researchers at home and abroad. The generation of ionic wind is derived from the corona discharge principle: due to the action of high voltage, the electric field intensity near the needle electrode is extremely high, so that a large number of air molecules in the area are ionized, and the electric field outside the area is weak, so that the ionization process is not generated. Under the action of an electric field, charged particles move directionally and collide with neutral particles without electricity in the movement process, and partial kinetic energy is transferred to the neutral particles, so that the neutral particles move directionally together, namely, ion wind is generated.

In order to reduce noise, some existing air conditioning indoor units usually adopt an ion wind module to replace an air supply fan to realize air supply, or adopt the ion wind module and the air supply fan to drive air supply simultaneously. In any event, the performance and air delivery effectiveness of the ion wind module is critical.

Disclosure of Invention

The designer of the invention realizes that in the ion wind module, the relative position relationship between the needle electrode and the relative position relationship between the needle electrode and the mesh electrode play a crucial role in the performance of the whole ion wind module. If the relative position of the needle electrodes changes due to structural design strength, long-term use, or other external forces, the performance of the entire ion wind module is compromised.

To this end, an object of the first aspect of the present invention is to overcome at least one of the drawbacks of the prior art, and to provide an ion wind generating apparatus capable of ensuring a constant relative position of a needle electrode.

It is another object of the first aspect of the present invention to improve the uniformity of the air supply of the ion wind generating device.

It is a further object of the first aspect of the invention to avoid frictional sparking during discharge to eliminate safety hazards.

A second object of the present invention is to provide an air conditioning indoor unit having good performance and low noise.

According to a first aspect of the present invention, there is provided an ion wind generating apparatus comprising at least one discharge module for generating ion wind, each of the discharge modules comprising a mesh electrode extending perpendicularly to a wind blowing direction of the ion wind generating apparatus, a plurality of needle electrodes distributed on one side of the mesh electrode, and a needle holder for holding the plurality of needle electrodes, wherein

The needle frame is provided with a plurality of parallel conducting rods and a plurality of parallel reinforcing ribs, the conducting rods and the reinforcing ribs are arranged in a staggered mode, and one needle electrode is arranged at the intersection of each conducting rod and each reinforcing rib.

Optionally, the conductive rod and the reinforcing rib are perpendicular to each other.

Optionally, the air supply direction of the ion wind generating device is the depth direction thereof; and is

The pin frame further comprises conducting strips extending along the transverse direction, each conducting rod is electrically connected with the conducting strip and vertically extends upwards from the conducting strip, and each reinforcing rib extends along the transverse direction.

Optionally, the distance between every two adjacent conductive rods is the same, and the distance between every two adjacent reinforcing ribs is the same.

Optionally, each of the discharge modules further comprises a housing; and is

One side of mesh electrode is equipped with the design frame, the design frame is fixed on the casing, so that mesh electrode remains the perpendicular to throughout the plane state of ion wind generating device's air supply direction.

According to a second aspect of the present invention, there is provided an air conditioning indoor unit comprising:

the air conditioner comprises a shell, a fan and a fan, wherein the shell is provided with at least one air supply outlet for flowing out of air supply flow, and one or more air supply outlets in the at least one air supply outlet are provided with an opening and closing mechanism for rectifying air supply; and

at least one ion wind generating device is arranged in the shell and used for providing ion wind to one or more air supply outlets in the at least one air supply outlet.

Alternatively, the air supply outlet having the opening and closing mechanism is circular, and each of the opening and closing mechanisms includes:

a central baffle fixedly arranged at the center of the corresponding air supply outlet, and an air outlet area is formed between the outer periphery of the central baffle and the inner periphery of the corresponding air supply outlet; and

the plurality of curved blades are sequentially arranged along the circumferential direction of the central baffle, are configured to be gathered towards the center of the central baffle so as to at least partially open the air outlet area, and are configured to be unfolded towards the direction away from the center of the central baffle so as to at least partially close the air outlet area.

Optionally, each of the curved blades comprises:

an outer contour edge portion including a first circular arc-shaped section and a second circular arc-shaped section; and

an inner contour edge portion comprising a third arc-shaped segment and a fourth arc-shaped segment, the inner contour edge portion facing toward a center of the central baffle when the plurality of curved blades are gathered; wherein

The first circular arc-shaped section and the fourth circular arc-shaped section are gradually close to each other along the direction pointing to the root end of the curved blade, so that the root end of the curved blade forms a tapered curved area; the second and third circular arc-shaped sections are gradually closer together in a direction pointing towards the tip of the curved blade so that the tip of the curved blade forms a tapered curved region.

Optionally, the number of the air supply outlets provided with the opening and closing mechanism is multiple, and the indoor unit of the air conditioner further comprises a plurality of axial flow fans arranged in one-to-one correspondence with the air supply outlets provided with the opening and closing mechanism.

Optionally, in a depth direction of the indoor unit of the air conditioner, the air supply opening is located on a front side of the casing, and at least a part of a rear side of the air supply opening is provided with an air guide structure, where each air guide structure includes:

the rotating ring is arranged in the shell and is arranged opposite to the corresponding air supply outlet, and the rotating ring is configured to controllably rotate around the central axis of the rotating ring; and

the two swing blade assemblies are arranged on the rotating ring at intervals; each swing blade component comprises a swing blade driving mechanism and a plurality of swing blades, the swing blades are arranged on the inner side of the rotating ring, each swing blade is provided with a rotating shaft, and the swing blade driving mechanism is configured to drive each swing blade to self-transmit and enable the swing blades to synchronously move.

The ion wind generating device is provided with at least one discharge module, each discharge module is provided with a needle frame, the needle frame is provided with a plurality of conducting rods and a plurality of reinforcing ribs which are arranged in a staggered mode, and needle electrodes of the discharge modules are arranged at the intersection points of the conducting rods and the reinforcing ribs. That is, the quantity of conducting rod and strengthening rib can be different and produce the change according to the quantity demand of needle electrode to guarantee that every needle electrode all can be fixed through the dual function of conducting rod and strengthening rib. After the quantity of the needle electrodes is determined, the distance and the relative position between the conducting rod and the reinforcing ribs are constant, the structural strength of the conducting rod and the reinforcing ribs is relatively high, and displacement or deformation hardly occurs due to the action of external force, so that the relative position of each needle electrode can be reliably ensured to be constant, and the ion wind generating device is ensured to have better performance all the time.

Further, because the distance between every two adjacent conducting rods is the same, and the distance between every two adjacent reinforcing ribs is the same, the distribution of the needle electrodes can be more uniform, the air supply uniformity of the ion wind generating device is improved, and the comfort level experience of a user is improved.

Furthermore, the mesh electrode is fixed in position and shape through the shaping frame, so that the mesh electrode can be prevented from being bent or deformed, a plane structure can be always kept, and a plane electrode mesh is formed. The shaping frame has much higher structural strength than the mesh-shaped electrode, and can not displace or deform under the action of external force, so that the distances between each needle-shaped electrode and the mesh-shaped electrode are the same, namely, the constant spacing of the needle meshes is ensured, the phenomenon of uneven discharge caused by unequal discharge distances is effectively avoided, the phenomena of friction ignition and peculiar smell are generated, and the potential safety hazard is eliminated.

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 invention will be described in detail hereinafter, by way of illustration and not 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 block diagram of an ionic wind generating apparatus according to one embodiment of the present invention;

FIG. 2 is a schematic exploded view of a discharge module of the ion wind generating device according to an embodiment of the present invention;

fig. 3 is a schematic structural view of a connection relationship between a plurality of discharge modules of the ion wind generating apparatus according to an embodiment of the present invention;

fig. 4 is a schematic structural view of a connection relationship between a plurality of discharge modules of an ion wind generating apparatus according to another embodiment of the present invention;

fig. 5 and 6 are schematic structural views of an indoor unit of an air conditioner according to an embodiment of the present invention;

fig. 7 is a schematic structural exploded view of an air conditioning indoor unit according to an embodiment of the present invention;

FIGS. 8 and 9 are schematic block diagrams of different orientations of the curved blades of the opening and closing structure, respectively, according to one embodiment of the present invention;

fig. 10 is a front view schematically illustrating an air guide structure of an air conditioning indoor unit according to an embodiment of the present invention.

Detailed Description

First, an ion wind generating device according to an embodiment of the present invention is provided, fig. 1 is a schematic structural diagram of an ion wind generating device according to an embodiment of the present invention, and fig. 2 is a schematic structural exploded view of a discharge module of an ion wind generating device according to an embodiment of the present invention. Referring to fig. 1 to 2, the ion wind generating device 10 of the present invention includes at least one discharge module 100 for generating ion wind, each discharge module 100 including a mesh electrode 110 extending perpendicular to a wind blowing direction of the ion wind generating device, a plurality of needle electrodes 120 distributed at one side of the mesh electrode 110, and a needle holder 130 for fixing the plurality of needle electrodes 120. It is emphasized that references to a plurality in embodiments of the present invention mean two, three or more than three. Specifically, the mesh electrode 110 may be a metal mesh having square holes, diamond holes, circular holes, or other shaped through holes. The needle electrode 120 may be a discharge needle made of a metal material, and has a discharge tip directed toward the center of one of the through holes of the mesh electrode 110.

Further, the needle holder 130 has a plurality of parallel conductive rods 131 and a plurality of parallel reinforcing ribs 132, the conductive rods 131 and the reinforcing ribs 132 are arranged in a staggered manner, and a needle electrode 120 is disposed at the intersection of each conductive rod 131 and each reinforcing rib 132. That is, the number of the conductive rods 131 and the reinforcing ribs 132 may be changed according to the number of the needle electrodes 120, so as to ensure that each needle electrode 120 can be fixed by the dual function of the conductive rods 131 and the reinforcing ribs 132. After the number of the needle electrodes 120 is determined, the distance and the relative position between the conductive rod 131 and the reinforcing rib 132 are constant, and the structural strength of the conductive rod 131 and the reinforcing rib 132 is relatively high, and almost no displacement or deformation occurs due to the action of external force, so that the relative position of each needle electrode 120 can be reliably ensured to be constant, and the ion wind generating device is ensured to have good performance all the time.

Specifically, the reinforcing rib 132 and the conductive rod 131 may be integrally formed, or may be fixed together by gluing, screws, or other suitable means. When the reinforcing rib 132 and the conductive rod 131 are integrally formed, the materials of the two are the same; when the reinforcing rib 132 and the conductive rod 131 are fixed together by gluing, screws or other suitable means, the materials of the two may be the same or different. The reinforcing ribs 132 may be made of an insulating material such as plastic or rubber having high hardness.

The conductive rod 131 is preferably a rod-shaped or strip-shaped PCB board. Each of the conductive rods 131 has an insulating protective layer formed on the outside thereof and a conductive layer formed on the inside thereof, which is electrically connected to the needle electrodes 120 distributed on the conductive rod. Therefore, the conducting layer can be prevented from being exposed to the outside, and the phenomenon of random discharge or ignition can be avoided. Further, a plurality of pinholes for installing the needle electrode 120 are opened on the side surface of each conductive rod 131 facing the mesh electrode 110, and a filling layer filled by a welding process is arranged around the needle electrode 120. Therefore, the needle electrode 120 can be ensured to be well electrically connected with the conductive layer in the conductive rod 131, and the conductive layer can be strictly prevented from being exposed to the outside, so that the phenomena of random discharge or ignition can be avoided. In particular, the size of the needle may be slightly smaller than the size of the needle electrode so that the two are secured together by way of an interference fit.

In some embodiments of the present invention, the conductive rod 131 and the reinforcing rib 132 are perpendicular to each other, so that the needle holder 130 is not easily deformed, has strong structural stability and high structural strength, and further reliably ensures that the relative position of each needle electrode 120 is constant. In some alternative embodiments, the included angle between the conductive rods 131 and the reinforcing ribs 132 may also be an obtuse angle or an acute angle, i.e., the conductive rods 131 and the reinforcing ribs 132 may enclose a plurality of diamond-shaped lattices.

Further, the air blowing direction of the ion wind generating device 10 is the depth direction thereof. The pin frame 130 further includes conductive bars 133 extending in a transverse direction, each conductive bar 131 is electrically connected to the conductive bar 133 and extends vertically upward from the conductive bar 133, and each reinforcing rib 132 extends in the transverse direction. Specifically, the ion wind generating device 10 can supply air from the rear to the front, that is, the flow direction of the generated ion wind is from the rear to the front. Each discharge module 100 further includes a housing 140 penetrating front and rear, and the conductive strip 132 is engaged with the housing 140, so that the conductive strip 132 and the conductive rod 131 fixed with the plurality of needle electrodes 120 are fixed on the housing 140.

In some embodiments of the present invention, the distance between each two adjacent conductive bars 131 is the same, and the distance between each two adjacent reinforcing ribs 132 is the same. Therefore, the distribution of the needle electrodes 120 can be more uniform, and the uniformity of the air supply of the ion wind generating device 10 is improved, so that the comfort level experience of the user is improved. Specifically, the distance between two adjacent conductive bars 131 and the distance between two adjacent reinforcing ribs 132 may be the same or different. That is, a plurality of rectangular or square lattices may be defined between the plurality of conductive rods 131 and the plurality of ribs 132. The number and spacing of the conductive rods 131 and the ribs 132 can be varied according to the number of the needle electrodes 120.

In some embodiments of the present invention, a shaping frame 150 is disposed on one side of the mesh electrode 110, and the shaping frame 150 is fixed on the housing 140 of the discharge module 100, so that the mesh electrode 110 is always kept in a planar state perpendicular to the air blowing direction of the ion wind generating device 10. That is, in the present invention, the mesh electrode 110 is fixed in position and shape by the shaping frame 150, so that the mesh electrode 110 can be prevented from bending or deforming, and can always maintain a planar structure to form a planar electrode mesh. Compared with the mesh-shaped electrode 110 with thin wires, the shaping frame 150 has much stronger structural strength and does not displace or deform under the action of external force, so that the distances between each needle-shaped electrode 120 and the mesh-shaped electrode 110 are the same, namely, the distance between the needle meshes is constant, the phenomena of uneven discharge caused by unequal discharge distances are effectively avoided, the phenomena of friction ignition and peculiar smell are caused, and the potential safety hazard is eliminated.

Specifically, the sizing frame 150 may be made of plastic, rubber or other insulating material with high hardness.

Further, the housing 140 has only four sidewalls of upper, lower, left, and right, which are open at the front and rear sides thereof. The mesh electrode 110 is located at the front side of the needle electrode 120 in the depth direction to ensure that the air outlet direction of the ion wind generating device 10 is from the back to the front. The shaping frame 150 is located at the front side of the mesh electrode 110 in the depth direction, so that the mesh electrode 110 can be fixed on the housing 140 through the shaping frame 150, and the appearance of the whole discharge module 100 can be ensured to be beautiful.

In some embodiments of the present invention, the mesh electrode 110 is fixed to the sizing frame 150 by adhesive. In alternative embodiments, the mesh electrode 110 may also be secured to the sizing frame 150 by other suitable means.

In some embodiments of the present invention, the number of the discharge modules 100 is multiple, the discharge modules 100 are sequentially arranged along the air blowing direction of the ion wind generating device 10, and the discharge modules 100 are connected in parallel or in series. Specifically, in the embodiment shown in fig. 1, the number of the discharge modules 100 may be two, and the two discharge modules 100 are sequentially arranged along the air blowing direction of the ion wind generating device 10. In other embodiments, the number of the discharge modules 100 may also be three or more than three.

Fig. 3 is a schematic structural view of a connection relationship between a plurality of discharge modules of the ion wind generating apparatus according to an embodiment of the present invention. Referring to fig. 3, the needle electrode 120 of each discharge module 100 is electrically connected to a positive or negative polarity high voltage terminal, and the mesh electrode 110 of each discharge module 100 is electrically connected to a ground terminal, so that a plurality of discharge modules 100 are connected in parallel. That is, the ion wind generating device 10 of the embodiment shown in fig. 3 is a parallel type multi-stage ion wind blowing device.

Fig. 4 is a schematic structural view of a connection relationship between a plurality of discharge modules of an ion wind generating apparatus according to another embodiment of the present invention. Referring to fig. 4, the needle electrode 120 of the discharge module 100 located at one end of the ion wind generating device 10 is electrically connected to a positive or negative polarity high voltage terminal, the mesh electrode 110 of the discharge module 100 located at the other end is electrically connected to a ground terminal, and the mesh electrode 110 of each of the discharge modules 100 except the discharge module 100 located at the other end, which are arranged from one end of the ion wind generating device 10 to the other end thereof, is electrically connected to the needle electrode 120 of the discharge module 100 located adjacent thereto downstream, so that the plurality of discharge modules 100 are connected in series. That is, the ion wind generating device 10 of the embodiment shown in fig. 4 is a serial multi-stage ion wind blowing device.

In the embodiment shown in fig. 3 and 4, a corona discharge phenomenon is generated between the needle electrode 120 and the corresponding mesh electrode 110 in each discharge module 100, so that the air can be accelerated multiple times through the plurality of discharge modules 100, the wind speeds are overlapped, a negative pressure can be formed under the condition of obtaining a higher wind outlet speed, the air intake is further increased, and the air supply speed, the air supply amount and the air supply efficiency of the ion wind generating device 10 are further improved.

The embodiment of the invention also provides an air conditioner indoor unit. Fig. 5 and 6 are schematic structural views of an air conditioning indoor unit according to an embodiment of the present invention, and fig. 7 is a schematic structural exploded view of the air conditioning indoor unit according to an embodiment of the present invention. The air conditioning indoor unit 1 of the present invention includes a casing 30 and at least one ion wind generating device 10 described in any one of the above embodiments. The casing 30 has at least one air blowing port 31 through which an air flow flows out, and the opening/closing mechanism 20 for rectifying the air blowing is provided to one or more air blowing ports 31 of the at least one air blowing port 31. That is, the number of the air blowing ports 31 may be one, and the opening and closing mechanism 20 is provided in the air blowing ports 31. Alternatively, the number of the air blowing ports 31 is plural, and the opening/closing mechanism 20 is provided only in a part of the air blowing ports 31 or the opening/closing mechanism 20 is provided in all the air blowing ports 31.

The at least one ion wind generating device 10 is disposed in the housing 30 to provide ion wind to one or more of the at least one wind blowing opening 31. The ion wind generating device 10 makes particles in the air obtain kinetic energy by means of electric field force, thereby forming ion wind. Compared with a rotary air supply assembly (such as a fan), the ion wind generating device 10 has the advantages of small pressure loss, low energy consumption, low noise and the like, so that the noise generated when the air conditioner indoor unit operates is reduced to a great extent.

Specifically, the indoor unit 1 of the air conditioner further includes a heat exchanging device disposed in the cabinet 30, and configured to exchange heat with air flowing therethrough to change the temperature of the air. The heat exchange device can be a flat plate evaporator, a multifold evaporator, a multi-section evaporator or other types of evaporators. The indoor unit 1 of the air conditioner can independently drive air supply through the ion wind generating device 10, and can also drive air supply together with the matching of fan components. The ion wind generated by the ion wind generating device 10 can be sent out after heat exchange by the heat exchange device, or can be directly sent out without heat exchange by the heat exchange device, and can be sent out after independently supplying air or mixing with air flow driven by a fan assembly.

In some embodiments of the present invention, the air blowing port 31 having the opening and closing mechanism 20 is circular. The air blowing port 1 without the opening and closing mechanism 20 may have a circular shape, a square shape, or other suitable shapes. Each shutter structure 30 comprises a central shutter 21 and a plurality of curved blades 22.

The central baffle 21 is fixedly provided at the center of the corresponding one of the air blowing ports 31, and an air outlet region is formed between the outer peripheral edge thereof and the inner peripheral edge of the corresponding one of the air blowing ports 31. For example, the central baffle 21 may be circular, and the corresponding outlet area is annular. In alternative embodiments of the present invention, the central baffle 21 may have other shapes such as a square shape, an oval shape, and the like.

The plurality of curved blades 22 are sequentially arranged along the circumferential direction of the central baffle 21, and the plurality of curved blades 22 are configured to be gathered toward the center of the central baffle 21 to at least partially open the wind outlet region, and to be fully gathered and contracted to the front side or the rear side of the central baffle 21. Therefore, when the air-conditioning indoor unit 1 is shut down, the plurality of curved blades 22 are unfolded towards the edge of the air supply opening 31, the air outlet area can be completely sealed, external dust and impurities can be effectively prevented from entering the air duct, and the working effect of the air-conditioning indoor unit 1 is ensured. When the indoor unit 1 of the air conditioner is in operation, the plurality of curved blades 22 gather and contract towards the center of the central baffle 21 to fully open the air outlet area, so that air can be supplied by the indoor unit 1 of the air conditioner.

Specifically, in some embodiments, the number of curved blades 22 may be 6 and are evenly disposed along the circumference of the central baffle 21. In other embodiments, the number of the blades may be 6 or less or 6 or more, and may be specifically set according to the size of the blades, the size of the central baffle 21, and the size of the air blowing port 31. Preferably, referring to fig. 6, the plurality of curved blades 22 can be completely gathered and retracted to the rear side of the central baffle 21, that is, when the plurality of curved blades 22 are in a completely gathered state, the central baffle 21 can shield the plurality of curved blades 22, and a user cannot observe the curved blades 22 from the outside of the air outlet, so that the appearance of the air outlet is more beautiful. More importantly, the plurality of curved blades 22 can be completely folded to the rear side of the central baffle 21, so that additional air duct space is not occupied, and the space utilization rate inside the indoor unit 1 of the air conditioner is improved. Referring to fig. 5, the plurality of curved blades 22 may also be flared away from the center of the central baffle 21 to at least partially enclose the wind exit region. In the embodiment shown in fig. 5, the plurality of curved blades 22 can be unfolded to completely cover the annular air outlet region, so as to achieve the overall closing of the air outlet.

Figures 8 and 9 are schematic block diagrams of different orientations of the curved blades of the opening and closing structure, respectively, according to one embodiment of the present invention. In the present embodiment, the curved blade 22 is approximately crescent shaped, having an outer contoured edge portion that is convex and an inner contoured edge portion that is concave. The inner peripheral edge portion is disposed toward the center of the central baffle 21 when the plurality of curved blades 22 are gathered, and accordingly, the outer peripheral edge portion may be directed toward the inner peripheral edge of the air blowing port 31 when the plurality of curved blades 22 are gathered. The outer and inner contoured edge portions together define the root and tip ends of the curved blade 22.

As shown in fig. 8-9, in some embodiments of the invention, the outer contoured edge portion of each curved blade 22 comprises: a first circular arc shaped section 221 and a second circular arc shaped section 222. The inner contour edge portion includes: a third circular arc shaped section 223 and a fourth circular arc shaped section 224. The first and fourth circular arc-shaped

sections

221, 224 are progressively closer towards the root end of the curved blade 22, such that the root end of the curved blade 22 forms a tapered curved region. The second and third circular arc-shaped

sections

222, 223 are progressively closer towards the tip of the curved blade 22 so that the tip of the curved blade 22 also forms a tapered curved region. That is, the first circular arc-shaped section 221 and the fourth circular arc-shaped section 224 gradually approach in a direction toward the root end of the curved blade 22, so that the root end of the curved blade 22 forms a tapered curved region; the second arc-shaped section 222 and the third arc-shaped section 223 gradually approach in a direction directed toward the tip of the curved blade 22 so that the tip of the curved blade 22 forms a tapered curved region.

In some preferred embodiments of the present invention, the curvature of the first circular arc-shaped section 221 is equal to the curvature of the outer periphery of the central barrier 21. That is, when the plurality of curved blades 22 are completely gathered to the rear side of the central barrier 21, the first circular arc-shaped sections 221 of the plurality of curved blades 22 coincide with the outer peripheral edge of the central barrier 21. After the plurality of curved blades 22 are gathered, a partial region of each curved blade 22 is located between two adjacent curved blades 22 of the curved blade 22. The curvature of the second circular arc-shaped section 222 is equal to the curvature of the inner periphery of the air blowing port 31. That is, when the plurality of curved blades 22 are fully unfolded to cover the wind outlet region, the second arc-shaped sections 222 of the plurality of curved blades 22 overlap the inner periphery of the air blowing opening 31. By such design, the plurality of curved blades 22 can be completely folded to the rear side of the central baffle 21 or completely unfolded to shield the air outlet area, so that the appearance of the air supply opening 31 is more complete and beautiful.

In addition, the curvature and length of the third circular arc shaped section 223 are both equal to the curvature and length of the first circular arc shaped section 221. In this embodiment, when the plurality of curved blades 22 are completely unfolded to cover the air outlet region, the first arc-shaped section 221 and the third arc-shaped section of each of the two adjacent curved blades 22 are just spliced together, so that the plurality of curved blades 22 can completely cover the air outlet region, and meanwhile, the adjacent curved blades 22 are not overlapped as much as possible, so that the size of the curved blades is fully utilized, and the appearance of the air outlet is more complete and attractive.

In some embodiments of the invention, to facilitate the gathering and unfolding of the plurality of curved blades 22, each curved blade 22 is preferably rotatably disposed about its root end to either the front or rear side of the central bezel 21. Moreover, after the plurality of curved blades 22 are gathered, a partial region of each curved blade 22 is located between two adjacent curved blades 22 of the curved blade.

Further, the first arc-shaped section 221 further has a guiding flange 225 that is gradually higher from the root end adjacent to the curved blade 22 to the direction away from the root end, so as to guide the curved blades 22 in the front-rear direction of the indoor unit when the curved blades 22 are contracted or expanded, so that the curved blades 22 can be at least partially overlapped. This is so because during the collapsing of the plurality of curved blades 22, there may be mechanical interference between adjacent curved blades 22. The guide flange 225 is located at a lower position near the root end and a higher position away from the root end, and when the adjacent curved blades 22 are folded to overlap each other, the guide flange 225 can guide the adjacent blades to slightly move toward the rear side so that the adjacent curved blades 22 are staggered in the front-rear direction of the opening and closing structure 20 to prevent mechanical interference.

In fig. 7, the positive direction of the X axis is directed to the front side of the indoor unit of the air conditioner, the positive direction of the Y axis is directed to the right side of the indoor unit, and the positive direction of the Z axis is directed to the upper side of the indoor unit. In the depth direction of the indoor unit 1, the air supply opening 31 is located at the front side of the casing 30, and an air guide structure 50 is provided at the rear side of at least part of the air supply opening 31. Preferably, an air guide mechanism 50 is provided at the circular air blowing port 31 having the opening and closing mechanism 20.

Fig. 10 is a front view schematically illustrating an air guide structure of an air conditioning indoor unit according to an embodiment of the present invention. Referring to fig. 10, each wind guide structure 50 includes: a rotating ring 53 and two swing blade assemblies.

The rotary ring 53 is provided inside the casing 30 and is disposed opposite to a corresponding one of the supply ports 31, and the rotary ring 53 is configured to be controllably rotated about a central axis thereof. The inner peripheral edge of the rotating ring 53 may overlap with the inner peripheral edge of the air outlet 31 in the vertical and horizontal directions of the air conditioning indoor unit 1, that is, the inner peripheral edge of the rotating ring 53 is provided on the rear side of the inner peripheral edge of the air outlet 31.

The two swing blade assemblies can be arranged on the rotating ring 53 at intervals, each swing blade assembly comprises a swing blade driving mechanism and a plurality of swing blades 54, the plurality of swing blades 54 are positioned on the inner side of the rotating ring, the root part of each swing blade 54 is provided with a rotating shaft 541, and the tail end of the rotating shaft 541 can penetrate through a round hole. The swing blade driving mechanism is configured to drive the plurality of swing blades 54 to synchronously rotate around the respective rotation shafts 541. And the swing vanes 54 of the two swing vane assemblies are also symmetrically arranged about the above-mentioned one diameter of the rotating ring 53, and the rotation shafts 541 of the two swing vanes 54 that are symmetrical to each other are on the same straight line. The size of the swing blade 54 can be set according to the size of the air outlet area.

In some embodiments of the present invention, each of the swing blade driving mechanisms is rotatable following the rotating ring 53, and includes: curved connecting rod, a plurality of rocker, crank and connecting rod motor.

In the present embodiment, the rotation range of the rotating ring 53 is preferably 0 to 90 °. The working principle of the air guiding structure 50 is as follows: the rotating ring 53 rotates to a predetermined position to drive the rotating shafts 541 of the swing blades 54 to move to a position at a specific angle relative to the horizontal plane, and then adjusts the rotating angle of the swing blades 54 according to the user's requirement. Specifically, when the user needs to wind the air conditioning indoor unit 1 up and down, the rotary ring 53 is rotated to 0 ° first. At this time, the rotation shaft 541 is in the horizontal position, as shown in fig. 6 for the right air supply outlet 31 of the air conditioning indoor unit 1, and at this time, the two curved links are driven to move up and down, so as to drive the plurality of swing blades 54 to turn up and down. When the plurality of swing blades 54 are turned upwards, the air supply outlet 31 supplies air upwards; when the swing blades 54 are turned down, the air outlet 31 blows air downwards. When the user needs the indoor unit to wind in the left-right direction, the rotating ring 53 rotates to 90 degrees first. At this time, the rotation shaft 541 is in the vertical direction, as shown in fig. 6, and the left air outlet of the indoor unit 1 of the air conditioner drives the two curved connecting rods to move, so as to drive the plurality of swing blades 54 to turn left and right. When the swing blades 54 are turned left, the air outlet 31 is opened left; when the swing blades 54 are turned right, the air outlet 31 blows air to the right.

Therefore, the swinging blade 54 of the air guiding structure 50 of the present invention can rotate around the rotation axis 541, and can also revolve around the center of the rotation ring 53 following the rotation ring. During the use of the air conditioning indoor unit 1, a user can adjust the rotation of the rotary ring 53 to determine the air blowing direction of the air blowing port 31, for example, up-down air blowing, left-right air blowing, 45-degree inclined air blowing, and then adjust the rotation of the swing vane 54 to perform air blowing. Alternatively, while the rotating ring 53 is rotating, the wind sweeping is performed simultaneously to blow out the natural wind as much as possible. The swing blade 54 of the present invention has more various swing angles, and the user can more freely adjust the air supply angle of the air supply outlet.

In some embodiments of the present invention, referring to fig. 10, the number of the air blowing openings 31 provided with the opening and closing mechanism 50 is plural, and the air conditioning indoor unit 1 further includes a plurality of axial fans 60 provided in one-to-one correspondence with the air blowing openings 31 provided with the opening and closing mechanism 50. Specifically, the ion wind generating device 10 has one number, the axial flow fans 60 have two numbers, and the two axial flow fans 60 are respectively disposed on both lateral sides of the ion wind generating device 10.

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

Claims

1. An ion wind generating device comprises at least one discharge module for generating ion wind, wherein each discharge module comprises a mesh electrode extending perpendicular to the air supply direction of the ion wind generating device, a plurality of needle electrodes distributed on one side of the mesh electrode and a needle frame for fixing the needle electrodes

The needle frame is provided with a plurality of parallel conducting rods and a plurality of parallel reinforcing ribs, the conducting rods and the reinforcing ribs are arranged in a staggered mode, and the intersection of each conducting rod and each reinforcing rib is provided with one needle-shaped electrode;

the conducting rods are PCB boards, a plurality of pinholes used for installing the needle-shaped electrodes are formed in the side face, facing the mesh-shaped electrodes, of each conducting rod, filling layers filled through a welding process are arranged around the needle-shaped electrodes, and the size of each pinhole is smaller than that of each needle-shaped electrode;

the pin frame further comprises conducting strips extending along the transverse direction, each conducting rod is electrically connected with the conducting strip and vertically extends upwards from the conducting strip, and each reinforcing rib extends along the transverse direction;

each discharge module further comprises a shell; the conducting bar is clamped with the shell, so that the conducting rod and the conducting bar which are fixed with the plurality of needle-shaped electrodes are fixed on the shell.

2. The ionic wind generating device according to claim 1, wherein

The conductive rod is perpendicular to the reinforcing rib.

3. The ionic wind generating device according to claim 2, wherein

The air supply direction of the ion wind generating device is the depth direction of the ion wind generating device.

4. The ionic wind generating device according to claim 1, wherein

Every two adjacent conducting rods are the same in distance, and every two adjacent reinforcing ribs are the same in distance.

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

at least one ionic wind generating device according to any one of claims 1 to 4 disposed within said housing for providing ionic wind to one or more of said at least one supply air opening.

6. The indoor unit of air conditioner according to claim 5, wherein

The air supply outlet with the opening and closing mechanism is circular, and each opening and closing mechanism comprises:

7. The indoor unit of claim 6, wherein each of the curved blades comprises:

8. The indoor unit of air conditioner according to claim 5, wherein

The indoor unit of the air conditioner further comprises a plurality of axial flow fans which are arranged in one-to-one correspondence with the air outlets provided with the opening and closing mechanisms.

9. The indoor unit of air conditioner according to claim 5, wherein

In the direction of depth of machine in the air conditioning, the supply-air outlet is located the front side of casing, at least part the rear side of supply-air outlet all is equipped with a wind-guiding structure, every wind-guiding structure all includes: