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 comprises a filter screen grid, the filter screen grid is cylindrical, the filter screen grid comprises more than two grid bars arranged along the axial direction, the grid bars extend along the circumferential direction of the filter screen grid, the filter screen grid is provided with a ventilation opening and a filter air duct which are communicated with each other, and the ventilation opening and the filter air duct are communicated with each other. The filter air duct is defined by the inner circumferential wall of the filter screen grid, and a fixed support and a movable support are arranged at the two ends of the filter screen grid respectively; the filter screen covers the ventilation opening of the filter screen grid; the driving assembly is fixed relative to the fixed support and drives the movable support to move, and the movable support drives the filter screen grid to be unfolded or compressed in the axial direction of the filter screen grid. The filter screen assembly can increase the air inlet area, reduce air resistance and improve the air volume of an air conditioner, and is diversified in function.

Description

Technical Field

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

[0002] The filter assembly of existing vertical cabinet air conditioners is generally located on the air inlet side. Since the filter assembly is generally fixed, the grid grille on the filter will hinder the air intake, reducing the air volume of the air conditioner. In addition, the current filter assembly generally only plays a filtering role, filtering air debris from entering the interior of the air conditioner, and has a single function. Utility Model Content

[0003] The first object of the utility model is to provide a filter assembly which can increase the air inlet area, reduce wind resistance, increase the air volume of air conditioning, and has diversified functions.

[0004] The second object of the present utility model is to provide an air outlet device using the above-mentioned filter assembly.

[0005] The third object of the present utility model is to provide an air-conditioning indoor unit which can increase the air inlet area, reduce wind resistance, increase the air-conditioning air volume, and has diversified functions.

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

[0007] To achieve the above-mentioned first purpose, the utility model provides a filter screen assembly, including a filter screen grille, the filter screen grille is cylindrical, the filter screen grille includes two or more bars arranged along the axial direction, the bars extend along the circumference of the filter screen grille, the filter screen grille is provided with mutually connected ventilation openings and filter air ducts, the filter air ducts are surrounded by the inner circumferential wall of the filter screen grille, and a fixed bracket and a movable bracket are respectively provided at both ends of the filter screen grille; a filter screen, the filter screen covers the ventilation opening of the filter screen grille; a driving assembly, the driving assembly is fixed relative to the fixed bracket, the driving assembly drives the movable bracket to move, and the movable bracket drives the filter screen grille to expand or compress along the axial direction of the filter screen grille.

[0008] As can be seen from the above scheme, when the filter grille is expanded, its bars spread out, the height of the filter grille increases, and the airflow is optimized, serving as an outlet channel and guiding the air. When the filter grille is compressed, the bars are tightly packed together, the height of the filter grille becomes lower, and the air inlet resistance is reduced, thereby increasing the airflow of the air conditioner. At the same time, when the bars are compressed together, the gaps between adjacent bars and the ventilation openings such as the movable end of the filter grille are covered with filter mesh, thus achieving a filtering effect on the airflow.

[0009] A preferred solution is that the inner peripheral wall of the grid bar is arranged to be inclined toward the fixed end of the filter grille, and the fixed end is an end of the filter grille provided with a fixed bracket.

[0010] It can be seen that the inclined grid bars can guide the air flow, thereby increasing the air output and the air outlet distance.

[0011] A further solution is that when the filter grid is in the unfolded state, it is in a trumpet shape.

[0012] It can be seen that the trumpet-shaped filter grid is convenient for compressing the filter grid, and at the same time, the trumpet shape is more conducive to guiding the air.

[0013] A further solution is that the grid bars near the large-diameter end of the filter grid are in the shape of discs with a circular cross-section, and the grid bars near the small-diameter end of the filter grid are in the shape of discs with a rectangular cross-section.

[0014] It can be seen that the circular disc-shaped grid bars can form a good connection with the outlet end of the air outlet channel, while the rectangular disc-shaped grid bars can form a good connection with the rectangular air outlet at the top of the air conditioner housing.

[0015] A preferred solution is that the filter net assembly further includes a connecting member made of a flexible material, and two adjacent grid bars are connected by the connecting member.

[0016] It can be seen that by providing the flexible connecting member, on the one hand, the connection between the grid bars can be realized, and on the other hand, when the filter grid is compressed, the connecting member will not interfere with the movement of the grid bars.

[0017] A further solution is that the number of the connecting members is more than two, and the plurality of connecting members are arranged at intervals along the circumference of the filter grid. And / or the connecting member is made of a flexible material, or the connecting member is a chain and includes a plurality of rotatably connected links, and the links are made of a rigid material.

[0018] It can be seen that the arrangement of the plurality of connecting members ensures the stability of the connection between the grid bars and ensures that the filter grid can move smoothly between the compressed and unfolded positions.

[0019] A preferred solution is that the filter net includes a filter net sheet and filter net strips; the ventilation opening includes an air duct opening provided at one end of the filter air duct close to the movable bracket and a ventilation gap provided between two adjacent grid bars; the filter net sheet is provided on the movable bracket and covers the air duct opening, and the filter net strips are connected between two adjacent grid bars and cover the ventilation gap.

[0020] It can be seen that when the air enters, the filter grid will be compressed, and the grid bars will overlap each other. The filter net strips are relatively soft and will also be folded. The air flow enters the air conditioner interior from the top of the filter grid. There is a filter net sheet at the top, which can ensure that the air is filtered before entering the air duct.

[0021] In a further solution, 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.

[0022] It can be seen that when the air flow moves upward under the guidance of the 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, which can prevent the air flow from flowing out between the two grid bars.

[0023] In a preferred solution, the number of driving components is more than two, and each driving component is arranged at intervals along the circumferential direction of the filter grid.

[0024] In a preferred solution, the driving component includes a driving member and a driving rod. The driving rod extends along the axis of the filter grid. The driving rod is threadedly connected to the movable bracket. The driving member drives the driving rod to rotate, and the driving rod drives the movable bracket to move along the axis of the filter grid.

[0025] It can be seen that multiple driving components arranged in the circumferential direction of the filter grid act together to ensure that the filter net assembly can be smoothly deployed or compressed.

[0026] To achieve the above second object, the present invention provides an air outlet device, including the above-mentioned filter net assembly.

[0027] In a preferred solution, the air outlet device is provided with a first air outlet and a second air outlet, and a air supply channel is further arranged in the air outlet device; a first transition air duct is arranged between the first air outlet and the air supply channel, and a filter net assembly is arranged in the air supply channel; and / or a second transition air duct is arranged between the second air outlet and the air supply channel, and a filter net assembly is arranged in the air supply channel.

[0028] It can be seen that the filter net assembly can be arranged in the first transition air duct, or can be arranged in the second transition air duct, or can be arranged in both the first transition air duct and the second transition air duct.

[0029] 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 formed on the air conditioner housing; a air supply channel is further arranged 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 arranged 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 includes: a filter grid, the filter grid is in a cylindrical shape, the filter grid includes more than two grid bars arranged along the axial direction, the grid bars extend along the circumferential direction of the filter grid, the filter grid is provided with a vent and a filter air duct that communicate with each other, the filter air duct is surrounded by the inner peripheral wall of the filter grid, fixed brackets and movable brackets are respectively arranged at both ends of the filter grid, and the fixed brackets are fixed relative to the air conditioner housing; a filter screen, the filter screen covers the vent of the filter grid; a driving assembly, the driving assembly is fixed relative to the fixed bracket, the driving assembly drives the movable bracket to move, and the movable bracket drives the filter grid to expand or compress along the axial direction of the filter grid; when the first air outlet intakes air, the filter grid is in a compressed state; when the first air outlet discharges air, the filter grid is in an expanded state, and the air outlet end of the filter air duct is butted against the first air outlet.

[0030] As can be seen from the above solution, when 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 intakes air and the upper air outlet discharges air, the driving member drives the filter grid to expand, the upper end of the filter grid is butted against the first air outlet, the air flow enters the air supply channel from the lower air outlet, and after being guided by the filter air duct, it is sent out from the first air outlet; when the air conditioner is in the heating mode, that is, when the upper air outlet intakes air and the lower air outlet discharges air, the driving member drives the filter grid to compress, the upper end of the filter grid is separated from the first air outlet and moves toward the air supply channel side, the air flow enters the first transition air duct from the upper air outlet, because there is no filter screen blocking at the upper air outlet, so the air intake volume increases, the air flow entering the first transition air duct is filtered by the vent on the filter grid and the filter screen, then enters the air supply channel through the filter air duct, and finally is sent out from the lower air outlet. When 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 driving member drives the filter grid to compress, the air flow enters and is filtered by the vent on the filter grid and the filter screen, then enters the air supply channel through the filter air duct, and finally is sent out from the upper air outlet; when the air conditioner is in the heating mode, the driving member drives the filter grid to expand, the upper end of the filter grid is butted against the first air outlet, and the air flow coming from the air supply channel is sent out from the first air outlet after being guided by the filter air duct.

[0031] Therefore, when the filter grille is unfolded, its bars spread out, the height of the filter grille increases, and the air guiding effect is the best. As the air outlet channel, it plays the role of guiding air. When the filter grille is compressed, the bars are closely contracted layer by layer, the height of the filter grille becomes lower, the air inlet resistance is small, and the air volume of the air conditioner is increased. At the same time, when the bars are compressed together, the gaps between adjacent two bars and the ventilation openings such as the movable end of the filter grille are all covered with filter screens, so the filtering effect on the air flow can be achieved.

[0032] A preferred solution is that the bars are sheet-shaped, and the included angle between the bars and the axial direction of the filter grille is an acute angle; the inner peripheral wall of the bars is inclined towards the fixed end of the filter grille, and the fixed end is the end of the filter grille where a fixed bracket is provided.

[0033] A preferred solution is that one of the first air outlet and the second air outlet is arranged at the top of the air conditioner housing, and the other of the first air outlet and the second air outlet is arranged at the bottom of the air conditioner housing.

[0034] Thus, it can be seen that the air inlet and outlet are designed at the top and bottom of the air conditioner, with hidden air inlet and outlet, and the appearance of the air conditioner is beautiful.

[0035] A further solution is that the indoor unit of the air conditioner further includes a heat exchanger. The fan assembly includes an upper fan and a lower fan. The heat exchanger, the upper fan and the lower fan are all located in the air supply channel. In the vertical direction, the upper fan and the lower fan are respectively arranged on both sides of the heat exchanger.

[0036] A further solution is that both the upper fan and the lower fan include a fan bracket, a fan blade and a fan blade driving member; the fan bracket is installed in the air conditioner housing, and both the fan blade and the fan blade driving member are installed on the fan bracket, and the fan blade driving member can drive the fan blade to rotate forward or backward.

[0037] Thus, it can be seen that when the air conditioner blows air upward, both the upper and lower fans blow air upward. When the air conditioner switches to blow air downward, the fan blade driving members of the upper and lower fans drive the corresponding fan blades to rotate reversely, and both the upper and lower fans blow air downward. In this way, the fan blades adopt one-way air outlet fan blades, the one-way air outlet effect is good, and the air outlet direction is controlled by the forward and reverse rotation of the motor, and the conversion is rapid.

[0038] To achieve the above fourth object, the present invention provides an air conditioner, including an air conditioner outdoor unit and the above-mentioned air conditioner indoor unit which are connected to each other. Description of the Drawings

[0039] Figure 1 is an exploded view of the structure of an embodiment of the air conditioner of the present invention.

[0040] Figure 2 is a structural diagram of the filter screen assembly in the unfolded state in an embodiment of the air conditioner of the present invention.

[0041] Figure 3This is a structural diagram of the filter assembly in a compressed state in an embodiment of the air conditioner of the present utility model.

[0042] Figure 4 This is a structural exploded view of the filter grille and filter screen in an embodiment of the air conditioner of the present utility model.

[0043] Figure 5 It is a schematic diagram of the direction of airflow in the upper air outlet state in an embodiment of the air conditioner of the present utility model.

[0044] Figure 6 It is a cross-sectional view of the upper air outlet state of the embodiment of the air conditioner of the present utility model.

[0045] Figure 7 yes Figure 6 A partial enlarged view of point A in the middle.

[0046] Figure 8 yes Figure 6 A partial enlarged view of point B in the middle.

[0047] Figure 9 It is a schematic diagram of the direction of air flow in the downward air outlet state in an embodiment of the air conditioner of the present utility model.

[0048] Figure 10 It is a cross-sectional view of the air conditioner embodiment of the present invention in the downward air outlet state.

[0049] Figure 11 yes Figure 10 A partial enlarged view of point C in the middle.

[0050] Figure 12 yes Figure 10 A partial enlarged view of point D in the middle.

[0051] The present invention will be further described below with reference to the accompanying drawings and embodiments. DETAILED DESCRIPTION

[0052] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. The description of the exemplary embodiments is merely illustrative and is in no way intended to limit the present invention and its application or use. The present invention can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to make the present invention thorough and complete and to fully convey the scope of the present invention to those skilled in the art. It should be noted that unless otherwise specifically stated, the relative arrangement of components and steps, the composition of materials, numerical expressions, and numerical values set forth in these embodiments should be interpreted as merely exemplary and not as limiting.

[0053] The "first", "second" and similar terms used in the present utility model do not denote any order, quantity or importance, but are only 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" and "right" are only used to represent relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0054] 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.

[0055] 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, for example, 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.

[0056] 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.

[0057] The air outlet device of this embodiment is an air conditioner, which includes an outdoor air conditioner and an indoor air conditioner connected to each other, and the indoor air conditioner is a floor-standing air conditioner.

[0058] See Figures 1 to 6 , the indoor air conditioner includes an air conditioner housing 1, an upper filter assembly 2, a lower filter assembly 3, a heat exchanger 4 and a fan assembly.

[0059] A first air outlet and a second air outlet are formed in the air conditioner housing 1. The first air outlet is located at the top of the air conditioner housing and is also called the upper air outlet 11, and the second air outlet is located at the bottom of the air conditioner housing 1 and is also called the lower air outlet 12. A air supply channel 13, a first transition air duct 14 and a second transition air duct 15 are further arranged in 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 an upper fan 61 and a lower fan 62. In the vertical direction, the upper fan 61 and the lower fan 62 are respectively located at the upper and lower ends of the heat exchanger 4. Both the upper air outlet 11 and the lower air outlet 12 can communicate with the air supply channel 13.

[0060] The upper blower 61 and the lower blower 62 both include a blower bracket 63, a blower blade 64, and a blower blade driving member 66. The blower bracket 63 is installed inside the air conditioner housing 1, the blower blade 61 and the blower blade driving member 66 are both installed on the blower bracket 63, and the blower blade driving member 66 can drive the blower blade 64 to rotate forward and backward. Preferably, both the bracket driving member and the blower blade driving member are motors.

[0061] The first transition air duct 14 is located between the air supply duct 13 and the upper air outlet 11, and the upper filter assembly 2 is located inside the first transition air duct 14. The second transition air duct 15 is located between the air supply duct 13 and the lower air outlet 12, and the lower filter assembly 3 is located inside the second transition air duct 15. 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.

[0062] The upper air outlet 11 includes a first upper ventilation portion 111, a second upper ventilation portion 112, and a third upper ventilation portion 113. Both the first upper ventilation portion 111 and the second upper ventilation portion 112 are located on the top wall of the air conditioner housing 1. The second upper ventilation portion 112 surrounds the radial outside of the first upper ventilation portion 111. The third upper ventilation portion 113 is located on the peripheral wall of the air conditioner housing 1. An upper air door 7 is provided at the first upper ventilation portion 111, and the upper air door 7 opens the first upper ventilation portion 111 when the upper air outlet 11 intakes and exhausts 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 portion 111.

[0063] The lower air outlet 12 includes a first lower ventilation portion 121 and a second lower ventilation portion 122. Both the first lower ventilation portion 121 and the second lower ventilation portion 122 are located on the peripheral wall of the air conditioner housing 1.

[0064] The upper filter assembly 2 and the lower filter assembly 3 have the same structure and both include a filter grid 51, a filter screen 52, and a driving assembly 53. The filter grid 51 is cylindrical.

[0065] The filter grid 51 includes a fixed bracket 512, a movable bracket 513, and two or more grid bars 511 arranged along the axis. The fixed bracket 512 and the movable bracket 513 are respectively provided at both ends of the filter grid 51. The filter grid 51 is provided with a vent 514 and a filter air duct 515 that communicate with each other. The filter air duct 515 is surrounded by the inner peripheral wall of the filter grid 51. The filter screen 52 covers the vent 514 of the filter grid 51. The driving assembly 53 is fixed to the fixed bracket 512, and the driving assembly 53 drives the movable bracket 513 to move. The movable bracket 513 drives the filter grid 51 to expand or contract along the axis of the filter grid 51.

[0066] The fixed bracket 512 of the upper filter screen assembly 2 is located at the lower end of the filter grid 51 and is fixedly connected to the air conditioner housing 1. The movable bracket 513 is located at the upper end of the filter grid 51. The driving assembly 53 drives the filter grid 51 to be compressed downward or expanded upward. The fixed bracket 512 of the lower filter screen assembly 3 is located at the upper end of the filter grid 51 and is fixedly connected to the air conditioner housing 1. The movable bracket 513 is located at the lower end of the filter grid 51. The driving assembly 53 drives the filter grid 51 to be compressed upward or expanded downward.

[0067] When the filter grid 51 is in the expanded state, it is in a trumpet shape. In the filter grid 51, each grid bar 511 extends along the circumferential direction of the filter grid 51. Each grid bar 511 is in a sheet shape. The angle between the grid bar 511 and the axial direction of the filter grid 51 is an acute angle. The inner peripheral wall of the grid bar 511 on the filter grid 51 of the upper filter screen assembly 2 is inclined downward towards the lower end of the filter grid 51. The inner peripheral wall of the grid bar 511 on the filter grid 51 of the lower filter screen assembly 3 is inclined upward towards the upper end of the filter grid 51.

[0068] The grid bar 511 near the large-diameter end of the filter grid 51 is in a disk shape with a circular cross-section. The grid bar 511 near the small-diameter end of the filter grid 51 is in a disk shape with a rectangular cross-section.

[0069] Among two adjacent grid bars 511 in the axial direction, the upper end of the lower grid bar 511 is arranged close to the lower end of the upper grid bar 511. Among two adjacent grid bars 511, the upper end of the lower grid bar 511 is at the same height as the lower end of the upper grid bar 511, which can prevent air flow from flowing out between the two grid bars 511.

[0070] The upper filter screen assembly 2 and the lower filter screen assembly 3 also each include a connecting member (not shown). The connecting member is made of a flexible material. Each grid bar 511 is provided with a connecting hole 510 for the connecting member to pass through. Two adjacent grid bars 511 are connected by the connecting member. The number of connecting members is more than two, and multiple connecting members are arranged at intervals along the circumferential direction of the filter grid 51. Optionally, the connecting member is a nylon rope or an elastic rope, etc.

[0071] As Figure 4 shown, the filter screen 52 includes a filter screen sheet 521 and a filter screen strip 522. The ventilation opening 514 includes an air duct opening 5141 provided at one end of the filter air duct 515 close to the movable bracket 513 and a ventilation gap 5142 provided between two adjacent grid bars 511 in the axial direction. The filter screen sheet 521 is arranged on the movable bracket 513 and covers the air duct opening 5141. The filter screen strip 522 is connected between two adjacent grid bars 511 and covers the ventilation gap 5142.

[0072] The number of the driving components 53 is more than two, and the driving components 53 are arranged at intervals along the circumferential direction of the filter grid 51. Preferably, in this embodiment, the number of the driving components 53 is four, and the four driving components 53 are evenly arranged along the circumferential direction of the filter grid 51.

[0073] Each driving component 53 includes a driving member 531 and a driving rod 532. Preferably, the driving member 531 is a motor, and the driving rod 532 is a screw rod. The motor can drive the screw rod to rotate forward and backward. The driving rod 532 extends along the axial direction of the filter grid 51, and the driving rod 532 is threadedly connected to the movable bracket 513. The driving member 531 drives the corresponding driving rod 532 to rotate, and the driving rod 532 drives the movable bracket 513 and drives each grid bar 511 to move along the axial direction of the filter grid 51.

[0074] See Figures 5 to 8 , 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, and the lower air damper (not shown) opens the first lower ventilation part 121. The driving member 531 of the upper filter assembly 2 drives the corresponding filter grid 51 to move upward for unfolding. The upper end of the filter grid 51 is docked with the upper air outlet 11 to guide the air flow. At the same time, the driving member 531 of the lower filter assembly 3 drives the lower end of the corresponding filter grid 51 to move upward for compression, and the upper blower 61 and the lower blower 62 both rotate forward. The air flow enters the second transition air duct 15 from the first lower ventilation part 121 and the second lower ventilation part 122. The air intake area is large and the air intake efficiency is high. After being filtered by the lower filter assembly 3, it enters the filter air duct 515 of the lower filter assembly 3, then exchanges heat with the heat exchanger 4 through the air supply channel 13 and enters the filter air duct 515 of the upper filter assembly 2, and is sent out from the first upper ventilation part 111 through the diversion of the filter grid 51 of the upper filter assembly 2. The air discharge volume is large, the cold air does not blow on people, and the cooling effect is good.

[0075] See Figures 9 to 12, when the air conditioner is in the heating mode, i.e., the upper air outlet 11 intakes air and the lower air outlet 12 discharges air, the upper air damper 7 opens the first upper ventilation part 111, the lower air damper opens the first lower ventilation part 121, and the driving member 531 of the upper filter grid assembly 2 drives the corresponding filter grid 51 to move downward for compression. The upper end of the filter grid 51 is separated from the upper air outlet 11. At the same time, the driving member 531 of the lower filter grid assembly 3 drives the lower end of the corresponding filter grid 51 to move downward for expansion to guide the air flow. At this time, both the upper fan 61 and the lower fan 62 rotate in reverse. The air flow enters the first transition air duct 14 from the first upper ventilation part 111, the second upper ventilation part 112, and the third upper ventilation part 113, enters the filter air duct 515 of the upper filter grid assembly 2 after being filtered by the upper filter grid assembly 2, then exchanges heat with the heat exchanger 4 through the air supply passage 13 and enters the filter air duct 515 of the lower filter grid assembly 3, and finally is sent out from the first lower ventilation part 121 through the drainage of the filter grid 51 of the lower filter grid assembly. The air volume of the air outlet is large, the indoor temperature rises quickly, the warm air starts from the feet, and the comfort is high.

[0076] As can be seen from the above, when the filter grid expands, its grid bars spread out, the height of the filter grid increases, and the air guiding effect is the best. As the air outlet passage, it plays an air guiding role; when the filter grid is compressed, the grid bars are closely attached and contracted layer by layer, the height of the filter grid becomes lower, and the air inlet resistance is small, improving the air volume of the air conditioner. At the same time, when the grid bars are compressed together, the gaps between adjacent two grid bars and the ventilation openings such as the movable ends of the filter grids are covered with filter nets, so the filtering effect on the air flow can be achieved.

[0077] In addition, the grid bars can also be semi-circular, that is, they do not extend in a circle in the circumferential direction. The number of grid bars can also be changed according to needs. Among adjacent two grid bars, the upper end of the grid bar located below can also be higher than or slightly lower than the lower end of the grid bar located above. The air outlet device can also be a dehumidifier or a fan, etc. The air outlet device can be provided with a filter grid assembly only near the upper air outlet, or only near the lower air outlet. The filter grid assembly can also not be provided with a connecting member, and adjacent two grid bars are only connected by filter net strips. The filter net can also be in the shape of a frustum-shaped cylinder and sleeved outside the filter grid, and the filter net is in an open-ended shape at one end. The open end of the filter net is located at the fixed end of the filter grid, and the closed end of the filter net is located at the movable end of the filter grid. The fixed end is the end of the filter grid provided with a fixed bracket, and the movable end is the end of the filter grid provided with a movable bracket. The number, length, and material of the connecting members can all be changed according to needs. The number of the driving components can also be one. At this time, a vertically extending guide rod is provided on the fixed bracket, and a guiding hole is correspondingly provided on the movable bracket. The guide rod is inserted and matched with the guiding hole, and the movable bracket can move along the extending direction of the guide rod. The connecting member can also be a chain and includes a plurality of relatively rotatably connected chain links, and the chain links are made of rigid materials. The above changes can also achieve the purpose of the present utility model.

[0078] 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, Comprising: A filter grid, the filter grid being cylindrical, the filter grid including two or more grid bars arranged axially, the grid bars extending circumferentially along the filter grid, the filter grid being provided with a vent and a filter air duct that communicate with each other, the filter air duct being formed by the inner peripheral wall of the filter grid, and fixed brackets and movable brackets being respectively provided at both ends of the filter grid; A filter screen, the filter screen covering the vent of the filter grid; A driving assembly, the driving assembly being fixed relative to the fixed bracket, the driving assembly driving the movable bracket to move, and the movable bracket driving the filter grid to expand or contract along the axis of the filter grid. [[ID=*4]]2. The filter screen assembly according to claim 1, wherein: The grid bar is sheet-shaped, and the angle between the grid bar and the axis of the filter grid is an acute angle; The inner peripheral wall of the grid bar is inclined towards the fixed end of the filter grid, and the fixed end is the end of the filter grid where the fixed bracket is provided.

3. The filter screen assembly according to claim 2, wherein: When the filter grid is in the expanded state, it is in a trumpet shape.

4. The filter screen assembly according to claim 2, wherein: The grid bars near the large-diameter end of the filter grid are in the shape of discs with a circular cross-section, and the grid bars near the small-diameter end of the filter grid are in the shape of discs with a rectangular cross-section.

5. The filter screen assembly according to any one of claims 1 to 4, wherein: The filter screen assembly further includes a connecting member, and adjacent two grid bars are connected by the connecting member.

6. The filter screen assembly according to claim 5, wherein: The number of the connecting members is two or more, and the plurality of connecting members are arranged at intervals along the circumferential direction of the filter grid; and / or The connecting member is made of a flexible material, or the connecting member is a chain and includes a plurality of rotatably connected chain links, and the chain links are made of a rigid material.

7. The filter screen assembly according to any one of claims 1 to 4, wherein: The filter screen includes a filter screen sheet and a filter screen strip; The vent includes an air duct opening provided at one end of the filter air duct close to the movable bracket and a ventilation gap provided between two adjacent grid bars; The filter screen sheet is arranged on the movable bracket and covers the air duct opening, and the filter screen strip is connected between two adjacent grid bars and covers the ventilation gap.

8. The filter screen assembly according to any one of claims 1 to 4, wherein: The axis is parallel to the vertical direction. Among two adjacent grid bars, the upper end of the grid bar located below is at the same height as the lower end of the grid bar located above, or the upper end of the grid bar located below is higher than the lower end of the grid bar located above.

9. The filter screen assembly according to any one of claims 1 to 4, wherein: The number of the driving assemblies is two or more, and each driving assembly is arranged at intervals along the circumferential direction of the filter grid.

10. The filter screen assembly according to any one of claims 1 to 4, wherein: The driving assembly includes a driving member and a driving rod. The driving rod extends along the axial direction of the filter grille. The driving rod is threadedly connected to the movable bracket. The driving member drives the driving rod to rotate, and the driving rod drives the movable bracket to move along the axial direction of the filter grille.

11. Air outlet device, characterized in that, It includes the filter screen assembly according to any one of claims 1 to 10.

12. The air outlet device according to claim 11, characterized in that: 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.

13. An indoor air conditioner, comprising 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; 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 includes: A filter grille, the filter grille is cylindrical, the filter grille includes two or more grid bars arranged along the axial direction, the grid bars extend along the circumferential direction of the filter grille, the filter grille is provided with a ventilation opening and a filter air duct that communicate with each other, the filter air duct is surrounded by the inner peripheral wall of the filter grille, and fixed brackets and movable brackets are respectively provided at both ends of the filter grille, and the fixed bracket is fixed relative to the air conditioner housing; A filter screen, the filter screen covers the ventilation opening of the filter grille; A driving assembly, the driving assembly is fixed relative to the fixed bracket, the driving assembly drives the movable bracket to move, and the movable bracket drives the filter grille to expand or contract along the axial direction of the filter grille; When the first air outlet intakes air, the filter grille is in a compressed state; When the first air outlet discharges air, the filter grille is in an expanded state, and the air outlet end of the filter air duct is butted against the first air outlet.

14. The indoor air conditioner according to claim 13, characterized in that: The inner peripheral wall of the grid bar is inclined towards the fixed end of the filter grille, and the fixed end is the end of the filter grille provided with the fixed bracket.

15. The indoor air conditioner according to claim 13, characterized in that: One of the first air outlet and the second air outlet is arranged at the top of the air conditioner housing, and the other of the first air outlet and the second air outlet is arranged at the bottom of the air conditioner housing.

16. The indoor air conditioner according to claim 15, characterized in that: The indoor air conditioner further includes a heat exchanger. The blower assembly includes an upper blower and a lower blower. The heat exchanger, the upper blower, and the lower blower are all located in the air supply passage. In the vertical direction, the upper blower and the lower blower are respectively arranged on both sides of the heat exchanger.

17. The indoor air conditioner according to claim 16, wherein: Both the upper blower and the lower blower include a blower bracket, a blower blade, and a blower blade driving member; The blower bracket is installed in the air conditioner housing. Both the blower blade and the blower blade driving member are installed on the blower bracket. The blower blade driving member can drive the blower blade to rotate forward or backward.

18. Air conditioner, characterized in that, It includes an air conditioner outdoor unit and the indoor air conditioner according to any one of claims 13 to 17, which are connected to each other.

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