CN220506978U - Cross-flow fan for air conditioner and air conditioner - Google Patents

Abstract

The application relates to the technical field of cross-flow fans, and discloses a cross-flow fan for an air conditioner, wherein the cross-flow fan for the air conditioner comprises: an impeller defining a cavity; the negative ion generating device is arranged in the cavity along the axial direction of the impeller and is rotatably connected with the impeller; the negative ion generating device comprises a first negative ion generating plate and a second negative ion generating plate, wherein the first negative ion generating plate and the second negative ion generating plate are arranged on two sides of the rotation center of the negative ion generating device and are positioned on the same straight line passing through the rotation center of the negative ion generating device, and the windward area of the first negative ion generating plate is smaller than that of the second negative ion generating plate. The utility model discloses a can reduce the wind noise that anion generating device set up in the impeller effectively, reduce the wind noise that anion generating device produced when guaranteeing the bactericidal effect to the air in the impeller, promote user's use experience. The application also discloses an air conditioner.

Description

Cross-flow fan for air conditioner and air conditioner

Technical Field

The application relates to the technical field of cross-flow fans, and for example relates to a cross-flow fan for an air conditioner and the air conditioner.

Background

At present, an air conditioner indoor unit is generally provided with an air purifying filter screen, an air increasing ash layer is used for filtering air, but the air quality cannot be guaranteed, bacteria in the air cannot be killed, and because a room is airtight, air and outdoor air are poor in exchange, bacteria are easy to adhere to and propagate in the indoor air, particularly the indoor air conditioner indoor unit, and the air is diffused into the room through an air duct, so that the human health is influenced.

Aiming at the problems, a sterilizing and bacteriostasis device is designed for the indoor unit of the air conditioner so as to reduce bacteria in the air, which is a necessary requirement. The negative ion generator can continuously generate negative direct current high corona through the tip of the carbon fiber, a large amount of electrons are emitted at high speed, and the electric power can be immediately captured by oxygen molecules in the air, so that negative ions are formed, and the negative ions in the air have the effects of dedusting and purifying the air. Accordingly, in the related art, the problem of air sterilization is solved by installing a negative ion generator in an air conditioning indoor unit.

The related art discloses an air-conditioner air crossing barrier disinfection and purification device, which comprises a ventilation cavity surrounded by a front panel, a rear back panel and a bottom air guide plate, wherein a filter screen is respectively arranged at the upper port of the ventilation cavity and the outer side surface of the upper end, a heat exchanger is arranged below the filter screen, a cross-flow fan is rotatably arranged below the heat exchanger, and a disinfection and purification unit is arranged in the cross-flow fan; the sterilizing and purifying unit is made of nonmetallic conductive materials. The disinfection and purification unit is a carbon fiber bundle structure made of carbon fiber materials, the carbon fiber bundle comprises a fiber bundle I, a tension spring is installed at one end of the fiber bundle I, the tension spring is connected with an anti-leakage protection sleeve, the anti-leakage protection sleeve is sleeved on a mandrel at the inner side of an end cover of the cross-flow fan, and the other end of the fiber bundle I is connected to the conductive assembly.

In the process of implementing the embodiments of the present disclosure, it is found that at least the following problems exist in the related art:

the disinfection and purification unit in the related art is fixedly arranged in the cross-flow fan, and when the cross-flow fan rotates, the disinfection and purification unit can obstruct the air flow in the cross-flow fan, so that the wind noise generated by the disinfection and purification unit is larger.

It should be noted that the information disclosed in the foregoing background section is only for enhancing understanding of the background of the present application and thus may include information that does not form the prior art that is already known to those of ordinary skill in the art.

Disclosure of Invention

The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview, and is intended to neither identify key/critical elements nor delineate the scope of such embodiments, but is intended as a prelude to the more detailed description that follows.

The embodiment of the disclosure provides a cross-flow fan for an air conditioner and the air conditioner, so as to solve the problem of larger wind noise caused by arranging a negative ion generating device in the cross-flow fan.

Embodiments of a first aspect of the present application provide a cross-flow fan for an air conditioner, the cross-flow fan for an air conditioner including: an impeller defining a cavity; the negative ion generating device is arranged in the cavity along the axial direction of the impeller and is rotatably connected with the impeller; the negative ion generating device comprises a first negative ion generating plate and a second negative ion generating plate, wherein the first negative ion generating plate and the second negative ion generating plate are arranged on two sides of the rotation center of the negative ion generating device and are positioned on the same straight line passing through the rotation center of the negative ion generating device, and the windward area of the first negative ion generating plate is smaller than that of the second negative ion generating plate.

In some alternative embodiments, the center of rotation of the negative ion generating device is set away from the eccentric vortex of the impeller.

In some alternative embodiments, the anion generating means is located on the air outlet side of the impeller.

In some alternative embodiments, one end of the first negative ion generating plate is connected with one end of the second negative ion generating plate and is in an integral structure, and the sum of the lengths of the first negative ion generating plate and the second negative ion generating plate is less than or equal to half of the diameter of the impeller.

In some alternative embodiments, the end of the first negative ion generating plate facing away from the second negative ion generating plate is provided with an air guiding structure to reduce wind resistance of the first negative ion generating plate.

In some alternative embodiments, the end of the second negative ion generating plate facing away from the first negative ion generating plate is provided with an air guiding structure to reduce wind resistance of the second negative ion generating plate.

In some alternative embodiments, the impeller includes an impeller end cap; the negative ion generating device further includes: the first metal ring is arranged on one side of the impeller end cover; the second metal ring is arranged on the other side of the impeller end cover and is connected with the first metal ring; the carbon brush is arranged on one of the first metal ring and the second metal ring, which is positioned at the inner side of the impeller end cover, and is connected with the negative ion generating device.

In some alternative embodiments, the projected area of the negative ion generating device on the carbon brush is smaller than the area of the carbon brush, so that the negative ion generating device is always connected with the carbon brush.

In some alternative embodiments, the impeller end cap is provided with a through hole; the negative ion generating device further includes: and the metal rod is arranged in the through hole, one end of the metal rod is connected with the first metal ring, and the other end of the metal rod is connected with the second metal ring.

An embodiment of a second aspect of the present application provides an air conditioner comprising a cross-flow fan for an air conditioner as in any of the above alternative embodiments.

The through-flow fan for the air conditioner and the air conditioner provided by the embodiment of the disclosure can realize the following technical effects:

through setting up anion generating device in the inside of impeller for remain high concentration anion volume throughout in the impeller, when the cross flow fan rotated, can make the impeller drive flow into inside air all through anion generating device's purification, under high concentration anion's effect, bacterium, the virus that carry in the air are killed. Meanwhile, part of negative ions are blown to the outside of the impeller and combined with oxygen in the air to generate a large amount of negative oxygen ions, so that the surrounding air is more fresh. Through setting up first anion and generating board and second anion and generating the board, can increase the position that the anion produced in the impeller, promote the homogeneity of anion concentration in the impeller, and then guarantee the bactericidal effect. The first negative ion generating plate and the second negative ion generating plate are respectively arranged on two sides of the rotation center of the negative ion generating device, the first negative ion generating plate and the second negative ion generating plate are positioned on the same straight line passing through the rotation center of the negative ion generating device, and the windward area of the first negative ion generating plate is smaller than that of the second negative ion generating plate. Therefore, the negative ion generating device does not need to be provided with a driving device, can automatically rotate under the action of air, and can reduce the cost of the negative ion generating device. Because the windward area of the first negative ion generating plate is smaller than that of the second negative ion generating plate, when the impeller rotates, the air acting force received by the second negative ion generating plate is larger than that received by the first negative ion generating panel, the first negative ion generating plate rotates around the rotating center to the direction facing the air inlet side of the impeller, and the second negative ion generating plate rotates around the rotating center to the direction of the air outlet side of the impeller, that is, the direction of the first negative ion generating plate facing the second negative ion generating plate is the same as the air flowing direction of the position of the rotating center of the negative ion generating device, so that the wind noise of the negative ion generating device can be effectively reduced, the wind noise generated by the negative ion generating device is reduced while the sterilizing effect on the air in the impeller is guaranteed, and the use experience of a user is improved.

The foregoing general description and the following description are exemplary and explanatory only and are not restrictive of the application.

Drawings

One or more embodiments are illustrated by way of example and not limitation in the figures of the accompanying drawings, in which like references indicate similar elements, and in which like reference numerals refer to similar elements, and in which:

fig. 1 is a schematic view of a cross-flow fan for an air conditioner according to an embodiment of the present disclosure;

FIG. 2 is a schematic cross-sectional view of a cross-flow fan for an air conditioner according to an embodiment of the present disclosure;

FIG. 3 is a schematic cross-sectional view of another cross-flow fan for an air conditioner provided in an embodiment of the present disclosure;

fig. 4 is a schematic view showing a part of a structure of a cross flow fan for an air conditioner according to an embodiment of the present disclosure;

fig. 5 is an enlarged schematic view of portion a of fig. 4 provided by an embodiment of the present disclosure.

Reference numerals:

10: impeller, 11: impeller end cover,

20: negative ion generating device, 21: first negative ion generating plate, 22: second negative ion generating plate, 23: wind guiding structure, 24: first metal ring, 25: second metal ring, 26: carbon brush, 27: a metal rod.

Detailed Description

So that the manner in which the features and techniques of the disclosed embodiments can be understood in more detail, a more particular description of the embodiments of the disclosure, briefly summarized below, may be had by reference to the appended drawings, which are not intended to be limiting of the embodiments of the disclosure. In the following description of the technology, for purposes of explanation, numerous details are set forth in order to provide a thorough understanding of the disclosed embodiments. However, one or more embodiments may still be practiced without these details. In other instances, well-known structures and devices may be shown simplified in order to simplify the drawing.

The terms first, second and the like in the description and in the claims of the embodiments of the disclosure and in the above-described figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate in order to describe embodiments of the present disclosure. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion.

In the embodiments of the present disclosure, the terms "upper", "lower", "inner", "middle", "outer", "front", "rear", and the like indicate an azimuth or a positional relationship based on that shown in the drawings. These terms are used primarily to better describe embodiments of the present disclosure and embodiments thereof and are not intended to limit the indicated device, element, or component to a particular orientation or to be constructed and operated in a particular orientation. Also, some of the terms described above may be used to indicate other meanings in addition to orientation or positional relationships, for example, the term "upper" may also be used to indicate some sort of attachment or connection in some cases. The specific meaning of these terms in the embodiments of the present disclosure will be understood by those of ordinary skill in the art in view of the specific circumstances.

In addition, the terms "disposed," "connected," "secured" and "affixed" are to be construed broadly. For example, "connected" may be in a fixed connection, a removable connection, or a unitary construction; may be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements, or components. The specific meaning of the above terms in the embodiments of the present disclosure may be understood by those of ordinary skill in the art according to specific circumstances.

The term "plurality" means two or more, unless otherwise indicated.

In the embodiment of the present disclosure, the character "/" indicates that the front and rear objects are an or relationship. For example, A/B represents: a or B.

The term "and/or" is an associative relationship that describes an object, meaning that there may be three relationships. For example, a and/or B, represent: a or B, or, A and B.

It should be noted that, without conflict, the embodiments of the present disclosure and features of the embodiments may be combined with each other.

The cross flow fan mainly comprises an impeller, an air duct plate and a motor. The air duct plate defines a containing cavity and an air outlet air duct, the impeller is rotatably arranged in the containing cavity, and the motor is in driving connection with the impeller and is used for driving the impeller to rotate relative to the air duct plate, so that air flows out of the air outlet air duct under the driving of the impeller to form an air outlet air duct.

As shown in fig. 1 to 5, the disclosed embodiment provides a cross-flow fan for an air conditioner, which includes an impeller 10 and a negative ion generating device 20, the impeller 10 defining a cavity; the negative ion generating device 20 is arranged in the cavity along the axial direction of the impeller 10 and is rotatably connected with the impeller 10; the negative ion generating device 20 includes a first negative ion generating plate 21 and a second negative ion generating plate 22, where the first negative ion generating plate 21 and the second negative ion generating plate 22 are disposed on two sides of a rotation center of the negative ion generating device 20 and are located on a same straight line passing through the rotation center of the negative ion generating device 20, and a windward area of the first negative ion generating plate 21 is smaller than a windward area of the second negative ion generating plate 22.

By adopting the embodiment of the disclosure, the negative ion generating device 20 is arranged in the impeller 10, so that the high concentration negative ion amount is always kept in the impeller 10, when the cross-flow fan rotates, the impeller 10 can drive the air flowing into the interior to be purified by the negative ion generating device 20, and bacteria and viruses carried in the air are killed under the action of the high concentration negative ions. At the same time, part of negative ions are blown to the outside of the impeller 10 and combined with oxygen in the air to generate a large amount of negative oxygen ions, so that the surrounding air is more fresh. By arranging the first negative ion generating plate 21 and the second negative ion generating plate 22, the position of negative ion generation in the impeller 10 can be increased, the uniformity of the concentration of the negative ions in the impeller 10 is improved, and the sterilization effect is further ensured. By disposing the first negative ion generating plate 21 and the second negative ion generating plate 22 on both sides of the rotation center of the negative ion generating device 20, respectively, and the first negative ion generating plate 21 and the second negative ion generating plate 22 being located on the same straight line passing through the rotation center of the negative ion generating device 20, the windward area of the first negative ion generating plate 21 is smaller than the windward area of the second negative ion generating plate 22. Thus, the negative ion generating device 20 can automatically rotate under the action of air without arranging a driving device, and the cost of the negative ion generating device 20 can be reduced. Because the windward area of the first negative ion generating plate 21 is smaller than the windward area of the second negative ion generating plate 22, when the impeller 10 rotates, the air acting force received by the second negative ion generating plate 22 is larger than the air acting force received by the first negative ion generating plate 21, the first negative ion generating plate 21 rotates around the rotation center to the direction facing the air inlet side of the impeller 10, and the second negative ion generating plate 22 rotates around the rotation center to the direction of the air outlet side of the impeller 10, that is, the direction of the first negative ion generating plate 21 facing the second negative ion generating plate 22 is the same as the air flowing direction of the position of the rotation center of the negative ion generating device 20, so that the wind noise of the negative ion generating device 20 can be effectively reduced, the wind noise generated by the negative ion generating device 20 is reduced while the sterilizing effect on the air in the impeller 10 is ensured, and the use experience of a user is improved.

Illustratively, both end caps of the impeller 10 are provided with bearings, one end of which is connected to the end cap and the other end of which is connected to the negative ion generating device 20 such that the negative ion generating device 20 is rotatably connected to the impeller 10.

As illustrated in fig. 2 to 4, the first negative ion generating plate 21 and the second negative ion generating plate 22 are each of a flat plate structure. Thus, the area of the negative ion generating device 20 can be increased, so that the negative ion generating device 20 can generate more negative ions, and the concentration of the negative ions in the impeller 10 can be increased.

Alternatively, the center of gravity of the negative ion generating device 20 coincides with the center of rotation.

In this way, when the first negative ion generating plate 21 and the second negative ion generating plate 22 are not acted by air, that is, when the impeller 10 does not rotate, the first negative ion generating plate 21 and the second negative ion generating plate 22 can keep the current orientation position, the first negative ion generating plate 21 and the second negative ion generating plate 22 cannot rotate to the position along the up-down direction under the action of gravity, when the impeller 10 rotates next time, the first negative ion generating plate 21 and the second negative ion generating plate 22 do not need to rotate by a larger angle, and the occurrence of the condition that wind noise is larger due to the rotation of the negative ion generating device 20 when the impeller 10 rotates next time can be effectively avoided.

Alternatively, the rotation center of the negative ion generating device 20 is set to avoid the eccentric vortex of the impeller 10.

With the embodiment of the present disclosure, since the air flow at the eccentric vortex of the impeller 10 is a vortex, the air flow direction at the vortex is not stable, and when the rotation center of the negative ion generating device 20 is located at the eccentric vortex, the negative ion generating device 20 is caused to continuously reciprocate, and the influence on the stability of the eccentric vortex can cause turbulence in the impeller 10. By setting the rotation center of the negative ion generating device 20 to avoid the eccentric vortex of the impeller 10, the air outlet of the impeller 10 can be ensured and the negative ion generating device 20 is prevented from rotating back and forth.

Alternatively, the negative ion generating device 20 is located on the air outlet side of the impeller 10.

By adopting the embodiment of the disclosure, the negative ion generating device 20 is arranged on the air outlet side of the impeller 10, so that more negative ions flow out of the impeller 10, the concentration of external negative ions is rapidly improved, and the sterilization effect of the cross-flow fan for the air conditioner is improved.

The air outlet side of the impeller 10 herein means a side for air outlet located along a line passing through the center of rotation of the impeller and the eccentric vortex.

Alternatively, one end of the first negative ion generating plate 21 is connected to one end of the second negative ion generating plate 22 and is of an integral structure, and the sum of the lengths of the first negative ion generating plate 21 and the second negative ion generating plate 22 is less than or equal to half the diameter of the impeller 10.

With the embodiment of the present disclosure, as shown in fig. 2 to 4, one end of the first negative ion generating plate 21 is connected to one end of the second negative ion generating plate 22 and the first negative ion generating plate 21 and the second negative ion generating plate 22 are in an integral structure, that is, the first negative ion generating plate 21 and the second negative ion generating device 20 are integrally and directly connected. Thus, the installation and production of the negative ion generating device 20 are facilitated, and the first negative ion generating plate 21 and the second negative ion generating plate 22 are ensured to be firmly connected. When the air flow direction of the position of the first negative ion generating plate 21 is not identical to the air flow direction of the position of the second negative ion generating plate 22, since the windward area of the second negative ion generating plate 22 is larger than the windward area of the first negative ion generating plate 21, the orientation of the second negative ion generating plate 22 can be made substantially identical to the air flow direction of the position of the second negative ion generating plate 22. By setting the lengths of the first negative ion generating plate 21 and the second negative ion generating plate 22 and less than or equal to half of the diameter of the impeller 10, the occupied space of the negative ion generating device 20 in the impeller 10 can be reduced, and the situation that the wind noise of the first negative ion generating plate 21 is large due to the fact that the air flowing direction at the first negative ion generating plate 21 is inconsistent with the air flowing direction at the second negative ion generating plate 22 is avoided. In addition, the first and second negative ion generating plates 21 and 22 can be rotated to the stable positions rapidly, shortening the rotation time of the first and second negative ion generating plates 21 and 22, and further reducing the rotation noise of the negative ion generating device 20.

Optionally, an end of the first negative ion generating plate 21 facing away from the second negative ion generating plate 22 is provided with an air guiding structure 23 to reduce wind resistance of the first negative ion generating plate 21.

By adopting the embodiment of the disclosure, the windward resistance of the end of the first negative ion generating plate 21 can be effectively reduced by arranging the wind guiding structure 23 at the end of the first negative ion generating plate 21 facing away from the second negative ion generating plate 22. When the first negative ion generating plate 21 faces the air intake direction of the impeller 10, the air guide structure 23 can effectively reduce the wind noise of the first negative ion generating plate 21.

By way of example, with reference to fig. 3, the wind guiding structure 23 gradually increases in size from the end of the first negative ion generating plate 21 toward the rotation center of the negative ion generating device 20, the wind guiding structure 23 has a triangular cross section, and the wind guiding structure 23 may divide air.

Optionally, an end of the second negative ion generating plate 22 facing away from the first negative ion generating plate 21 is provided with an air guiding structure 23 to reduce wind resistance of the second negative ion generating plate 22.

By adopting the embodiment of the disclosure, the windward resistance of the end of the second negative ion generating plate 22 can be effectively reduced by arranging the wind guiding structure 23 at the end of the second negative ion generating plate 22 facing away from the first negative ion generating plate 21. When the second negative ion generating plate 22 and the air flow direction are the same, the air flowing to the end of the second negative ion generating plate 22 can make the air flow quickly merge under the guidance of the air guiding structure 23, so as to ensure the air outlet effect of the impeller 10.

Alternatively, the wind guiding structure 23 is arc-shaped, and the arc-shaped opening faces the rotation center of the negative ion generating device 20.

In this way, the wind guiding structure 23 is arranged in an arc shape, so that the impact force between the air and the wind guiding structure 23 can be reduced when the air flows to the wind guiding structure 23, and further wind noise and wind power loss are reduced.

Optionally, the impeller 10 comprises an impeller end cap 11; the negative ion generating device 20 further includes: the first metal ring 24, the second metal ring 25 and the carbon brush 26, wherein the first metal ring 24 is arranged on one side of the impeller end cover 11; the second metal ring 25 is arranged on the other side of the impeller end cover 11, and the second metal ring 25 is connected with the first metal ring 24; the carbon brush 26 is provided on one of the first metal ring 24 and the second metal ring 25 located inside the impeller end cover 11, and the carbon brush 26 is connected to the negative ion generating device 20.

With the embodiments of the present disclosure, as shown in fig. 2, 4 and 5, by providing the first metal ring 24 and the second metal ring 25, it is possible to connect the wires with the first metal ring 24, the first metal ring 24 conducts the current to the second metal ring 25, and the current on the second metal ring 25 is conducted to the negative ion generating device 20 through the carbon brush 26, so as to achieve the energization of the negative ion generating device 20.

Specifically, as shown in fig. 2 and 4, the end of the negative ion generating device 20 facing the impeller end cover 11 is abutted against the carbon brush 26 and rotatable relative to the carbon brush 26, so that the negative ion generating device 20 can be connected to the carbon brush 26 even after rotation.

Alternatively, the projection area of the negative ion generating device 20 on the carbon brush 26 is smaller than the area of the carbon brush 26, so that the negative ion generating device 20 is always connected with the carbon brush 26.

By adopting the embodiment of the disclosure, the projection area of the negative ion generating device 20 on the carbon brush 26 is smaller than the area of the carbon brush 26, the negative ion generating device 20 can be abutted with the carbon brush 26 no matter rotated to any angle, and the energizing effect of the negative ion generating device 20 is ensured.

Alternatively, the carbon brush 26 is integrally formed with the first negative ion generating plate 21 and the second negative ion generating plate 22, and the carbon brush 26 is rotatably connected with the first metal ring 24.

Thus, when the first negative ion generating plate 21 and the second negative ion generating plate 22 rotate, the carbon brush 26 rotates along with the first negative ion generating plate 21 and the second negative ion generating plate 22, so that the carbon brush 26 can be connected with the negative ion generating device 20 at any time, and the connection reliability of the carbon brush 26 and the negative ion generating device 20 can be improved. In addition, by rotationally connecting the carbon brush 26 with the first metal ring 24, the negative ion generating device 20 can be rotationally connected with the impeller 10 by using the carbon brush 26 and the first metal ring 24, and no connecting piece such as a bearing is required to be added, so that the structural complexity of the cross-flow fan is reduced.

Optionally, the impeller end cover 11 is provided with a through hole; the negative ion generating device 20 further includes: and a metal rod 27, wherein the metal rod 27 is arranged in the through hole, one end of the metal rod 27 is connected with the first metal ring 24, and the other end of the metal rod 27 is connected with the second metal ring 25.

With the presently disclosed embodiments, by providing the metal bar 27, the first metal ring 24 and the second metal ring 25 can be electrically connected with the metal bar 27. Therefore, no lead is needed to be arranged in the impeller 10, the occurrence of the situation that the lead collides with the impeller 10 or the negative ion generating device 20 under the action of air in the rotation process of the impeller 10 is avoided, and the reliability of the negative ion generating device 20 is improved.

Illustratively, as shown in fig. 4 and 5, the impeller end cover 11 is provided with two through holes, the number of the metal bars 27 is two, and the metal bars 27 are arranged in one-to-one correspondence with the through holes. Grooves are formed in the positions, corresponding to the through holes, of the first metal ring 24 and the second metal ring 25, so that the metal rods 27 are respectively clamped with the first metal ring 24 and the second metal ring 25. In this way, the metal rod 27 can be fixed to the position of the impeller end cover 11 with respect to the first metal ring 24 and the second metal ring 25 while electrically connecting the first metal ring 24 and the second metal ring 25, thereby improving the convenience of mounting the negative ion generating apparatus 20.

An embodiment of the present disclosure provides an air conditioner including a cross-flow fan for an air conditioner as set forth in any one of the above alternative embodiments.

The air conditioner adopting the embodiment of the present disclosure, because of including the cross flow fan for an air conditioner according to any one of the embodiments, has the beneficial effects of the cross flow fan for an air conditioner according to any one of the embodiments, and is not described herein again.

The above description and the drawings illustrate embodiments of the disclosure sufficiently to enable those skilled in the art to practice them. Other embodiments may include structural and other modifications. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in, or substituted for, those of others. The embodiments of the present disclosure are not limited to the structures that have been described above and shown in the drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims (10)

1. A cross-flow fan for an air conditioner, comprising:

an impeller defining a cavity;

the negative ion generating device is arranged in the cavity along the axial direction of the impeller and is rotatably connected with the impeller;

the negative ion generating device comprises a first negative ion generating plate and a second negative ion generating plate, wherein the first negative ion generating plate and the second negative ion generating plate are arranged on two sides of the rotating center and are positioned on the same straight line passing through the rotating center of the negative ion generating device, and the windward area of the first negative ion generating plate is smaller than that of the second negative ion generating plate.

2. The cross-flow fan for an air conditioner according to claim 1, wherein,

the rotation center of the negative ion generating device is set to avoid the eccentric vortex of the impeller.

3. A cross-flow fan for an air conditioner according to claim 2, wherein,

the negative ion generating device is positioned on the air outlet side of the impeller.

4. The cross-flow fan for an air conditioner according to claim 1, wherein,

one end of the first negative ion generating plate is connected with one end of the second negative ion generating plate and is of an integrated structure, and the sum of the lengths of the first negative ion generating plate and the second negative ion generating plate is smaller than or equal to half of the diameter of the impeller.

5. The cross-flow fan for an air conditioner according to claim 1, wherein,

the end part of the first negative ion generating plate, which is away from the second negative ion generating plate, is provided with an air guide structure so as to reduce the wind resistance of the first negative ion generating plate.

6. The cross-flow fan for an air conditioner according to claim 5, wherein,

the end part of the second negative ion generating plate, which is away from the first negative ion generating plate, is provided with an air guide structure so as to reduce the wind resistance of the second negative ion generating plate.

7. The cross-flow fan for an air conditioner as claimed in claim 1, wherein the impeller includes an impeller end cover;

the negative ion generating device further includes:

the first metal ring is arranged on one side of the impeller end cover;

the second metal ring is arranged on the other side of the impeller end cover and is connected with the first metal ring;

the carbon brush is arranged on one of the first metal ring and the second metal ring, which is positioned at the inner side of the impeller end cover, and is connected with the negative ion generating device.

8. The cross-flow fan for an air conditioner according to claim 7, wherein,

the projection area of the negative ion generating device on the carbon brush is smaller than the area of the carbon brush, so that the negative ion generating device is always connected with the carbon brush.

9. The cross-flow fan for an air conditioner according to claim 7, wherein,

the impeller end cover is provided with a through hole;

the negative ion generating device further includes:

and the metal rod is arranged in the through hole, one end of the metal rod is connected with the first metal ring, and the other end of the metal rod is connected with the second metal ring.

10. An air conditioner comprising the cross flow fan according to any one of claims 1 to 9.