Filter screen assembly, air outlet device, air conditioner indoor unit and air conditioner

Abstract

The utility model provides a filter screen assembly, air outlet device, air conditioner indoor unit and air conditioner, the filter screen assembly includes the cylindrical filter screen grid, the filter screen grid includes more than two grid bars arranged along the axial direction, the grid bars extend along the circumferential direction of the filter screen grid, the inner circumferential wall of the grid bar is inclined towards the first axial end of the filter screen grid, and the inner circumferential wall of the grid bar is inclined towards the second axial end of the filter screen grid. A ventilation opening is formed between every two adjacent grid bars in the axial direction, a filtering air channel is defined by the inner circumferential walls of the filtering net grids, and the filtering air channels communicate with the ventilation openings and penetrate through the filtering net assembly in the axial direction. The filter screen assembly can filter inlet air flow when air enters the upper air opening and avoid outlet air flow when air exits.

Description

Technical Field

[0001] The utility model relates to the technical field of air conditioners, and specifically, to a filter screen assembly, an air outlet device, an indoor unit of an air conditioner, and an air conditioner. Background Art

[0002] For a reversible air outlet air conditioner, each air outlet needs to take into account both the air volume of the air outlet and the air flow filtration of the air inlet. The current common air conditioner filter screen and its assembly structure cannot meet the requirements and can only meet the function of single air inlet filtration. When the air outlet is discharging air, the filter screen will block the air flow to a certain extent, thus affecting the air volume of the air outlet and the refrigeration efficiency. Summary of the Utility Model

[0003] The first object of the utility model is to provide a filter screen assembly that can filter the incoming air flow when the air inlet of the air outlet is in operation and avoid the outgoing air flow when the air outlet is in operation.

[0004] The second object of the utility model is to provide an air outlet device adopting the above filter screen assembly.

[0005] The third object of the utility model is to provide an indoor unit of an air conditioner that can filter the incoming air flow when the air inlet of the air outlet is in operation and avoid the outgoing air flow when the air outlet is in operation.

[0006] The fourth object of the utility model is to provide an air conditioner having the above indoor unit of an air conditioner.

[0007] To achieve the above first object, the utility model provides a filter screen assembly, including a cylindrical filter grid. The filter grid includes two or more grid bars arranged along the axial direction. The grid bars extend along the circumferential direction of the filter grid. The inner peripheral wall of the grid bar is inclined towards the first axial end of the filter grid. A ventilation opening is formed between two adjacent grid bars in the axial direction. The inner peripheral wall of the filter grid encloses a filter air duct. The filter air duct is communicated with the ventilation opening and axially penetrates through the filter screen assembly.

[0008] As can be seen from the above solution, when the air inlet is in operation, the air flow enters the air supply channel through the ventilation opening from the outside of the filter grid, and the filter screen assembly filters the air flow. When the air outlet is in operation, the air flow directly passes through the filter air duct along the axial direction of the filter screen assembly for air supply, so as to avoid the filter screen assembly from blocking the air flow and affecting the air volume of the air outlet and the refrigeration efficiency. The filter screen assembly can filter the incoming air flow when the air inlet of the air outlet is in operation and avoid the outgoing air flow when the air outlet is in operation. At the same time, the inclined grid bars can guide the air flow, thereby improving the air volume and the air outlet distance.

[0009] A preferred solution is that the grid bar is in the shape of a conical disk.

[0010] A further solution is that the axial direction is parallel to the vertical direction, and in two adjacent bars, the upper end of the lower bar is at the same height as the lower end of the upper bar, or the upper end of the lower bar is higher than the lower end of the upper bar.

[0011] It can be seen from this that when the airflow moves upward under the guidance of the bars, the upper end of the lower bar is at the same height as the lower end of the upper bar, or the upper end of the lower bar is higher than the lower end of the upper bar, which can prevent the airflow from flowing out between the two bars.

[0012] A preferred solution is that the filter screen assembly further includes a filter screen and a filter screen support, both of which are cylindrical; the filter screen grille, the filter screen and the filter screen support are arranged in sequence from the inside to the outside along the radial direction of the filter screen assembly.

[0013] A further solution is that a filter installation cavity is formed between the filter grille and the filter bracket, and an insertion port extending along the axial direction of the filter assembly is provided on the peripheral wall of the filter bracket, and the filter can be inserted into the filter installation cavity from the insertion port.

[0014] This shows that the filter can be easily installed and disassembled, thereby facilitating cleaning of the filter.

[0015] To achieve the second objective, the present invention provides an air outlet device comprising the filter assembly described above.

[0016] A preferred solution is that the air outlet device is provided with a first air outlet and a second air outlet, and an air supply channel is also provided in the air outlet device; a first transition air duct is provided between the first air outlet and the air supply channel, and a filter assembly is provided in the air supply channel; and / or a second transition air duct is provided between the second air outlet and the air supply channel, and a filter assembly is provided in the air supply channel.

[0017] It can be seen from this that the filter assembly can be arranged in the first transition air duct, can also be arranged in the second transition air duct, or can also be arranged in both the first transition air duct and the second transition air duct.

[0018] To achieve the above-mentioned third object, the present utility model provides an air conditioner indoor unit, which includes an air conditioner housing, a filter screen assembly and a fan assembly; a first air outlet and a second air outlet are provided on the air conditioner housing; a air supply channel is further provided inside the air conditioner housing, the fan assembly is located in the air supply channel, and both the first air outlet and the second air outlet can communicate with the air supply channel; a first transition air duct is further provided between the air supply channel and the first air outlet, and the filter screen assembly is located in the first transition air duct; the filter screen assembly is cylindrical, and the filter screen assembly divides the first transition air duct into a first filter air duct and a second filter air duct arranged along the radial direction of the filter screen assembly. The first filter air duct is located inside the filter screen assembly, and the second filter air duct is located outside the filter screen assembly; the first air outlet includes a first ventilation part and a second ventilation part, the first ventilation part communicates with the first filter air duct, the second filter air duct communicates with the second ventilation part, and the second filter air duct communicates with the air supply channel through the filter screen assembly; a first air door is provided at the first ventilation part, and the first air door opens when the first air outlet discharges air and closes when the first air outlet takes in air.

[0019] As can be seen from the above solution, by arranging the filter screen assembly in the first transition air duct, and the filter screen assembly divides the first transition air duct into a first filter air duct and a second filter air duct arranged along the radial direction. If the first air outlet is the upper air outlet and the second air outlet is the lower air outlet, when the air conditioner is in the cooling mode or the dehumidifying mode, that is, when the lower air outlet takes in air and the upper air outlet discharges air, the upper air door opens the first ventilation part, the air flow enters the air supply channel from the lower air outlet, and is sent out from the first ventilation part after passing through the first filter air duct; when the air conditioner is in the heating mode, that is, when the upper air outlet takes in air and the lower air outlet discharges air, the upper air door closes the first ventilation part, the air flow enters the second filter air duct from the second ventilation part, passes through the filter screen assembly and enters the first filter air duct. The filter screen assembly can filter the air flow, and then is sent out from the lower air outlet after passing through the air supply channel. If the first air outlet is the lower air outlet and the second air outlet is the upper air outlet, when the air conditioner is in the cooling mode or the dehumidifying mode, the lower air door closes the first ventilation part, the air flow enters the second filter air duct from the second ventilation part, passes through the filter screen assembly and enters the first filter air duct. The filter screen assembly can filter the air flow, and then is sent out from the upper air outlet after passing through the air supply channel; when the air conditioner is in the heating mode, the lower air door opens the first ventilation part, and the air flow coming from the air supply channel passes through the first filter air duct and is sent out from the first ventilation part.

[0020] Since when the upper air outlet discharges air, the air flow can flow along the first upper filter air duct of the upper filter screen assembly without passing through the filter screen of the upper filter screen assembly, and when the lower air outlet discharges air, the air flow can flow along the first lower filter air duct of the lower filter screen assembly without passing through the filter screen of the lower filter screen assembly, there is no blockage to the air flow, avoiding affecting the air discharge volume and the refrigeration efficiency. Therefore, this air conditioner indoor unit can filter the incoming air flow when the lower air outlet takes in air and avoid the outgoing air flow when discharging air.

[0021] A preferred solution is that the first ventilation part and the second ventilation part are both located on the top wall of the air conditioner housing, the second ventilation part surrounds the radial outside of the first ventilation part, and the first ventilation part is arranged opposite to the first filter duct.

[0022] It can be seen that the first ventilation part and the second ventilation part are arranged radially, and the first ventilation part is arranged opposite to the first filter duct. The air flow passes through the first filter duct of the filter assembly and is directly sent out from the first ventilation part, further increasing the air output.

[0023] A preferred solution is that the filter screen assembly includes a filter screen grille, a filter screen and a filter screen support which are sequentially arranged from the inside to the outside along the radial direction of the filter screen assembly.

[0024] It can be seen that by setting the filter grille and the filter bracket, the filter can be supported and fixed to ensure a good filtering effect.

[0025] A further solution is that the filter grille includes a connecting piece and two or more bars arranged in a vertical direction, the bars extend along the circumference of the filter grille, the inner circumferential wall of the bars is inclined toward the direction of the air supply channel, the bars are connected by a connecting piece, and a ventilation opening is formed between two adjacent bars in the axial direction, and the first filter air duct and the second filter air duct are connected through the ventilation opening.

[0026] It can be seen that the inclined bars can guide the airflow, better guide the airflow to the first ventilation part, and avoid the airflow from leaking out of the gaps between the bars to the outside of the grille filter component as much as possible. The airflow path does not pass through the filter, thereby achieving the effect of wind avoidance.

[0027] A further solution is that the bars are in the shape of conical disks.

[0028] A preferred solution is that an air guide portion is provided between the end wall of the air conditioner casing and the filter bracket, and the air guide portion is located between the filter bracket and the first ventilation portion. The inner diameter of the air guide portion gradually increases from one end close to the first ventilation portion to the end close to the filter bracket.

[0029] It can be seen that the air guide portion plays a guiding role, which is used to guide the air flow to the first ventilation portion. At the same time, the air guide portion gathers at the first ventilation portion, which can increase the air output and air supply distance.

[0030] A preferred solution is that the first air outlet further includes a third ventilation portion, which is located on the peripheral wall of the air conditioner casing and is connected to the second filter air duct.

[0031] It can be seen that by arranging the third ventilation portion on the peripheral wall of the air conditioner casing, the air intake volume of the first air outlet is increased.

[0032] Preferably, both the first ventilation part and the second ventilation part are located on the peripheral wall of the air conditioner housing.

[0033] Preferably, the indoor unit of the air conditioner further includes a heat exchanger. The fan assembly includes a first fan and a second fan. Both the first fan and the second fan are located in the air supply passage. In the air supply direction of the air supply passage, the first fan and the second fan are respectively located on both sides of the heat exchanger.

[0034] To achieve the above fourth object, the present utility model provides an air conditioner, including an air conditioner outdoor unit and the above-mentioned air conditioner indoor unit which are connected to each other. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 is a structural diagram of an embodiment of the air conditioner of the present utility model.

[0036] Figure 2 is a longitudinal sectional view of an embodiment of the air conditioner of the present utility model.

[0037] Figure 3 is an exploded structural view of the filter grid and the filter screen support in an embodiment of the air conditioner of the present utility model.

[0038] Figure 4 is a transverse sectional view of an embodiment of the air conditioner of the present utility model.

[0039] Figure 5 is a sectional view of the filter grid in an embodiment of the air conditioner of the present utility model.

[0040] Figure 6 is a schematic diagram of the air flow direction in the up-air supply state in an embodiment of the air conditioner of the present utility model.

[0041] Figure 7 is a cooperation state diagram of each component in the up-air supply state in an embodiment of the air conditioner of the present utility model.

[0042] Figure 8 is a schematic diagram of the air flow direction in the down-air supply state in an embodiment of the air conditioner of the present utility model.

[0043] Figure 9 is a cooperation state diagram of each component in the down-air supply state in an embodiment of the air conditioner of the present utility model.

[0044] The present utility model will be further described below in conjunction with the accompanying drawings and embodiments. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0045] Various exemplary embodiments of the present utility model will now be described in detail with reference to the accompanying drawings. The description of the exemplary embodiments is merely illustrative and in no way limits the present utility model and its application or use. The present utility model can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to make the present utility model thorough and complete and to fully convey the scope of the present utility model to those skilled in the art. It should be noted that: unless otherwise specifically stated, the relative arrangements of components and steps, the compositions of materials, numerical expressions, and numerical values set forth in these embodiments should be construed as merely exemplary and not as limitations.

[0046] The "first", "second", and similar terms used in the present utility model do not denote any order, quantity, or importance, but are merely used to distinguish different parts. Terms such as "comprising" or "including" mean that the elements before the term cover the elements listed after the term, and do not exclude the possibility of also covering other elements. Terms such as "upper", "lower", "left", "right", etc. are only used to represent relative positional relationships, and when the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0047] In the present utility model, when it is described that a specific device is located between a first device and a second device, there may or may not be an intermediate device between the specific device and the first device or the second device. When it is described that a specific device is connected to other devices, the specific device may be directly connected to the other devices without an intermediate device, or may not be directly connected to the other devices and have an intermediate device.

[0048] All terms used in the present utility model (including technical terms or scientific terms) have the same meaning as understood by those of ordinary skill in the relevant art, unless otherwise specifically defined. It should also be understood that terms defined in a general dictionary, such as those, should be interpreted as having a meaning consistent with their meaning in the context of the relevant art, and should not be interpreted in an idealized or overly formal sense, unless specifically defined as such here.

[0049] Techniques, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the techniques, methods, and devices should be regarded as part of the specification.

[0050] The air outlet device of this embodiment is an air conditioner, which includes an air conditioner outdoor unit and an air conditioner indoor unit connected to each other, and the air conditioner indoor unit is a floor-standing air conditioner.

[0051] See Figure 1 and Figure 2 The air conditioner indoor unit includes an air conditioner housing 1, an upper filter assembly 2, a lower filter assembly 3, a heat exchanger 4, and a fan assembly.

[0052] An upper air outlet 11 (i.e., the first air outlet) and a lower air outlet 12 (i.e., the second air outlet) are formed on the air conditioner housing 1. A air supply channel 13, a first transition air duct 14 and a second transition air duct 15 are also arranged inside the air conditioner housing 1. The fan assembly and the heat exchanger 4 are both located in the air supply channel 13. The fan assembly includes a first fan 61 and a second fan 62. In the air supply direction of the air supply channel 13, the first fan 61 and the second fan 62 are respectively located on both sides of the heat exchanger 4. The air supply direction in this embodiment is the vertical direction. Both the upper air outlet 11 and the lower air outlet 12 can communicate with the air supply channel 13.

[0053] The first transition air duct 14 is located between the air supply channel 13 and the upper air outlet 11, and the upper filter assembly 2 is located in the first transition air duct 14. The second transition air duct 15 is located between the air supply channel 13 and the lower air outlet 12, and the lower filter assembly 3 is located in the second transition air duct 15.

[0054] Both the upper filter assembly 2 and the lower filter assembly 3 are cylindrical, and the axes of the upper filter assembly 2 and the lower filter assembly 3 are both parallel to the vertical direction.

[0055] The upper filter assembly 2 divides the first transition air duct 14 into a first upper filter air duct 141 and a second upper filter air duct 142 arranged radially along the upper filter assembly 2. The first upper filter air duct 141 is located inside the upper filter assembly 2, and the second upper filter air duct 142 is located outside the upper filter assembly 2 and is formed by the circumferential wall of the upper filter assembly 2 and the circumferential wall of the air conditioner housing 1. The upper air outlet 11 includes a first upper ventilation part 111, a second upper ventilation part 112 and a third upper ventilation part 113. The first upper ventilation part 111 communicates with the first upper filter air duct 141, the second upper filter air duct 142 communicates with the second upper ventilation part 112, the second upper filter air duct 142 communicates with the air supply channel 13 through the upper filter assembly 2, and the third upper ventilation part 113 is located on the circumferential wall of the air conditioner housing 1 and communicates with the second upper filter air duct 142. An upper air door 7 (i.e., the first air door) is arranged at the first upper ventilation part 111. The upper air door 7 opens the first upper ventilation part 111 when the upper air outlet 11 discharges air, and closes the first upper ventilation part 111 when the upper air outlet 11 intakes air. The upper air door 7 includes a plurality of upper guide vanes 71, and the upper guide vanes 71 can swing around their own axes to adjust the air direction at the first upper ventilation part 111.

[0056] The first upper ventilation part 111 and the second upper ventilation part 112 are both located on the top wall of the air conditioner housing 1. The second upper ventilation part 112 surrounds the radial outside of the first upper ventilation part 111. The first upper ventilation part 111 and the first upper filter air duct 141 are arranged opposite to each other in the vertical direction. The first upper filter air duct 141 axially penetrates the upper filter screen assembly 2. By arranging the first upper ventilation part 111 and the second upper ventilation part 112 along the radial direction, and the first upper ventilation part 111 is arranged opposite to the first upper filter air duct 141, the air flow directly flows upward from the first upper ventilation part 111 after flowing upward through the first upper filter air duct 141 of the upper filter screen assembly 2, avoiding the blockage of the air flow by the upper filter screen assembly 2 and further improving the air output volume.

[0057] The lower filter screen assembly 3 divides the second transition air duct 15 into a first lower filter air duct 151 and a second lower filter air duct 152 which are arranged along the radial direction of the lower filter screen assembly 3. The first lower filter air duct 151 is located inside the lower filter screen assembly 3 and axially penetrates the lower filter screen assembly 3. The second lower filter air duct 152 is located outside the lower filter screen assembly 3. The lower air outlet 12 includes a first lower ventilation part 121 and a second lower ventilation part 122. The first lower ventilation part 121 and the second lower ventilation part 122 are both located on the peripheral wall of the air conditioner housing 1. The first lower ventilation part 121 is communicated with the first lower filter air duct 151. The second lower filter air duct 152 is communicated with the second lower ventilation part 122. The second lower filter air duct 152 is communicated with the air supply channel 13 through the upper filter screen assembly 2. A lower air door 8 (i.e., the second air door) is arranged at the first lower ventilation part 121. The lower air door 8 opens the first lower ventilation part 121 when the lower air outlet 12 discharges air, and closes the first lower ventilation part 121 when the lower air outlet 12 intakes air.

[0058] See Figures 2 to 6 , the upper filter screen assembly 2 and the lower filter screen assembly 3 have the same structure, and both include a filter grid 51, a filter screen (not shown), and a filter screen support 53. The filter grid 51, the filter screen, and the filter screen support 53 are all cylindrical and are arranged in sequence from the inside to the outside along the radial direction of the corresponding filter screen assembly. The first upper filter air duct 141 and the first lower filter air duct 151 are both located on the radial inside of the corresponding filter grid 51. The second upper filter air duct 142 and the second lower filter air duct 152 are both located on the radial outside of the corresponding filter screen support 53. By arranging the filter grid 51 and the filter screen support 53, the filter screen can be supported and fixed, ensuring a good filtering effect.

[0059] The filter grille 51 includes two or more axially arranged bars 511 and two or more connectors 512 spaced apart circumferentially of the filter grille 51. In this embodiment, the connectors 512 are ribs and are integrally formed with the bars 511. The bars 511 extend circumferentially of the filter grille 51. The inner circumferential walls of the bars 511 on the filter grille 51 of the upper filter assembly 2 are tilted toward the lower end of the filter grille 51, while the inner circumferential walls of the bars 511 on the filter grille 51 of the lower filter assembly 3 are tilted toward the upper end of the filter grille 51. Preferably, each bar 511 is conical and disc-shaped and each bar 511 is arranged in parallel. In two axially adjacent bars 511, the upper end of the lower bar 511 is arranged close to the lower end of the upper bar 511. A vent 513 is formed between the two axially adjacent bars 511. The filter screen covers the corresponding vent 513. The first upper filter duct 141 and the second upper filter duct 142 are connected through the vent 513 of the upper filter screen assembly 2, and the first lower filter duct 151 and the second lower filter duct 152 are connected through the vent 513 of the lower filter screen assembly 3. In two adjacent bars 511, the upper end of the lower bar 511 is at the same height as the lower end of the upper bar 511, which can prevent air from flowing out from between the two bars 511. The connecting member 512 extends along the axial direction of the filter grille 51 and connects each bar 511 together.

[0060] like Figure 6 As shown, when the air conditioner is in the upper air outlet mode, the inclined grid bars 511 can guide the airflow and better guide the airflow to the first upper ventilation part 111, and avoid the airflow from leaking out of the gaps between the grid bars 511 to the outside of the upper filter assembly 2 as much as possible. The airflow does not pass through the filter through the path, achieving the effect of air outlet avoidance. Figure 8 As shown, when the air conditioner is in the downwind mode, an air inlet channel is formed between the two bars 511 of the filter grille 51. The inclined bars 511 allow the gas to enter the inside of the filter grille 51 from the outside of the upper filter assembly 2, so that when the air is taken in, the gas can pass through the filter between the filter bracket 53 and the filter grille 51, thereby achieving the effect of air intake filtering.

[0061] A filter installation cavity 54 is formed between the filter grille 51 and the filter holder 53. An insertion port 541 extending axially along the upper filter assembly 2 is provided on the peripheral wall of the filter holder 53. The filter can be inserted into the filter installation cavity 54 through the insertion port 541. This facilitates installation and removal of the filter, thereby facilitating cleaning of the filter. The filter grille 51 is fixedly connected to the filter holder 53. A filter guide is also provided on the filter holder 53. After the filter is inserted through the insertion port 541, it moves along the filter guide and eventually circles the filter grille 51, forming a pattern in which the filter wraps around the filter grille 51.

[0062] A wind guiding part 16 is arranged between the top wall of the air conditioner housing 1 and the upper filter screen assembly 2. The wind guiding part 16 is located between the filter screen bracket 53 of the upper filter screen assembly 2 and the first upper ventilation part 111. From the end close to the first upper ventilation part 111 to the end close to the filter screen bracket 53, the inner diameter of the wind guiding part 16 gradually increases.

[0063] By arranging the lower filter screen assembly 3 in the second transition air duct 15, the lower filter screen assembly 3 divides the second transition air duct 15 into a first lower filter air duct 151 and a second lower filter air duct 152 which are arranged radially. As Figure 2 、 6 shown in FIGS. 6 and 7, when the air conditioner is in the cooling mode or the dehumidifying mode, that is, when the lower air outlet 12 intakes air and the upper air outlet 11 discharges air, the upper air damper 7 opens the first upper ventilation part 111, the lower air damper 8 closes the first lower ventilation part 121, the air flow enters the air supply channel 13 from the second lower ventilation part 122, is filtered by the lower filter screen assembly 3 and then enters the first lower filter air duct 151, and then enters the first upper filter air duct 141 after heat exchange in the air supply channel 13, and finally is sent out from the first upper ventilation part 111. As Figure 2 、 8 shown in FIGS. 8 and 9, when the air conditioner is in the heating mode, that is, when the upper air outlet 11 intakes air and the lower air outlet 12 discharges air, the upper air damper 7 closes the first upper ventilation part 111, the air flow enters the second upper filter air duct 142 from the second upper ventilation part 112, enters the first upper filter air duct 141 through the upper filter screen assembly 2. The upper filter screen assembly 2 can filter the air flow, then enters the first lower filter air duct 151 after passing through the air supply channel 13, and finally is sent out from the first lower ventilation part 121.

[0064] As can be seen from the above, when the upper air outlet discharges air, the air flow can flow along the first upper filter air duct of the upper filter screen assembly without passing through the filter screen of the upper filter screen assembly. When the lower air outlet discharges air, the air flow can flow along the first lower filter air duct of the lower filter screen assembly without passing through the filter screen of the lower filter screen assembly. Therefore, neither the upper nor the lower filter screen assembly will block the air flow and affect the air discharge volume and the refrigeration efficiency. Therefore, the indoor unit of the air conditioner can filter the incoming air flow when the upper air outlet intakes air, avoid the outgoing air flow when the upper air outlet discharges air, filter the incoming air flow when the lower air outlet intakes air, and avoid the outgoing air flow when the lower air outlet discharges air.

[0065] In addition, the grid bars can also be semi-circular, that is, they do not extend in a full circle in the circumferential direction. The number of grid bars can also be changed as needed. Among two adjacent grid bars, the upper end of the lower grid bar can also be higher than or slightly lower than the lower end of the upper grid bar. The number, shape of the connecting members, and the number of grid bars connected by each connecting member can all be changed as needed. The air outlet device can also be a dehumidifier or a fan, etc. The air outlet device can be provided with a filter screen assembly only near the upper air outlet, or only near the lower air outlet. The filter grid can also be not provided with connecting members, and a ring-shaped filter screen is provided between every two adjacent grid bars. The two adjacent grid bars are connected by the filter screen. At this time, the filter screen assembly can also be not provided with a filter screen support. The above changes can also achieve the purpose of the present utility model.

[0066] Finally, it should be emphasized that the above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. For those skilled in the art, the present utility model can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. Filter screen assembly, characterized in that, It includes a filter screen and a cylindrical filter grid. The filter grid includes more than two grid bars arranged axially. The grid bars extend circumferentially along the filter grid. The inner peripheral wall of the grid bar is inclined towards the first axial end of the filter grid. An air vent is formed between two adjacent grid bars axially. The filter screen covers the air vent. The inner peripheral wall of the filter grid encloses a filter air duct, and the filter air duct communicates with the air vent and axially penetrates the filter screen assembly.

2. The filter screen assembly according to claim 1, wherein: The grid bar is in the shape of a conical disc.

3. The filter screen assembly according to claim 2, wherein: The axis is parallel to the vertical direction. Among two adjacent grid bars, the upper end of the lower grid bar is at the same height as the lower end of the upper grid bar, or the upper end of the lower grid bar is higher than the lower end of the upper grid bar.

4. The filter screen assembly according to any one of claims 1 to 3, wherein: The filter screen assembly further includes a filter screen support, and both the filter screen and the filter screen support are cylindrical; The filter grid, the filter screen and the filter screen support are arranged in sequence from inside to outside along the radial direction of the filter screen assembly.

5. The filter screen assembly according to claim 4, wherein: A filter screen installation cavity is formed between the filter grid and the filter screen support. An insertion opening extending axially along the filter screen assembly is provided on the peripheral wall of the filter screen support, and the filter screen can be inserted into the filter screen installation cavity from the insertion opening.

6. The filter screen assembly according to any one of claims 1 to 3, wherein: The filter grid further includes a connecting piece, and the grid bars are connected by the connecting piece.

7. Air outlet device, characterized in that, It includes the filter screen assembly according to any one of claims 1 to 6.

8. The air outlet device according to claim 7, wherein: The air outlet device is provided with a first air outlet and a second air outlet, and a air supply channel is further provided in the air outlet device; A first transition air duct is provided between the first air outlet and the air supply channel, and the filter screen assembly is provided in the air supply channel; and / or A second transition air duct is provided between the second air outlet and the air supply channel, and the filter screen assembly is provided in the air supply channel.

9. An air conditioner indoor unit, including an air conditioner housing, a filter screen assembly and a fan assembly; The air conditioner housing is provided with a first air outlet and a second air outlet; An air supply channel is further provided in the air conditioner housing. The fan assembly is located in the air supply channel, and both the first air outlet and the second air outlet can communicate with the air supply channel; It is characterized in that: A first transition air duct is further provided between the air supply channel and the first air outlet, and the filter screen assembly is located in the first transition air duct; The filter screen assembly is cylindrical. The filter screen assembly divides the first transition air duct into a first filter air duct and a second filter air duct arranged radially along the filter screen assembly. The first filter air duct is located inside the filter screen assembly, and the second filter air duct is located outside the filter screen assembly; The first air outlet includes a first ventilation part and a second ventilation part. The first ventilation part is communicated with the first filter air duct, the second filter air duct is communicated with the second ventilation part, and the second filter air duct is communicated with the air supply channel through the filter screen assembly; A first air damper is arranged at the first ventilation part. The first air damper is opened when the first air outlet discharges air and is closed when the first air outlet intakes air.

10. The indoor air conditioner according to claim 9, wherein: Both the first ventilation part and the second ventilation part are located on the top wall of the air conditioner housing. The second ventilation part surrounds the radial outer side of the first ventilation part, and the first ventilation part is disposed opposite to the first filter air duct.

11. The indoor air conditioner according to claim 9, wherein: The filter screen assembly includes a filter grid, a filter screen, and a filter screen support arranged in sequence from the inside to the outside along the radial direction of the filter screen assembly.

12. The indoor air conditioner according to claim 11, wherein: The filter grid includes a connecting member and two or more grid bars arranged along the vertical direction. The grid bars extend along the circumferential direction of the filter grid. The inner peripheral wall of the grid bar is inclined towards the air supply channel. The grid bars are connected by the connecting member, and ventilation openings are formed between two adjacent grid bars in the axial direction. The filter screen covers the ventilation openings, and the first filter air duct and the second filter air duct are communicated through the ventilation openings.

13. The indoor air conditioner according to claim 12, wherein: The grid bar is in a conical disc shape.

14. The indoor air conditioner according to any one of claims 11 to 13, wherein: A wind guiding part is arranged between the end wall of the air conditioner housing and the filter screen support. The wind guiding part is located between the filter screen support and the first ventilation part. From the end close to the first ventilation part to the end close to the filter screen support, the inner diameter of the wind guiding part gradually increases.

15. The indoor air conditioner according to any one of claims 9 to 13, wherein: The first air outlet further includes a third ventilation part. The third ventilation part is located on the peripheral wall of the air conditioner housing and is communicated with the second filter air duct.

16. The indoor air conditioner according to any one of claims 9 to 13, wherein: Both the first ventilation part and the second ventilation part are located on the peripheral wall of the air conditioner housing.

17. The indoor air conditioner according to any one of claims 9 to 13, wherein: The indoor air conditioner further includes a heat exchanger. The fan assembly includes a first fan and a second fan. Both the first fan and the second fan are located in the air supply channel. In the air supply direction of the air supply channel, the first fan and the second fan are respectively located on both sides of the heat exchanger.

18. Air conditioner, characterized in that, An air conditioner outdoor unit and the indoor air conditioner according to any one of claims 9 to 17 that are connected to each other.

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